Abstract

A heating, ventilation, and air conditioning (HVAC) system includes a variable refrigerant flow (VRF) unit including a variable speed compressor, a VRF heat exchanger, and a reversing valve of a vapor compression circuit. In addition, the HVAC system includes an air handling unit (AHU) including an AHU heat exchanger of the vapor compression circuit. Furthermore, the HVAC system includes a housing, wherein the VRF unit and the AHU are disposed within the housing, and wherein the variable speed compressor is configured to circulate a refrigerant through the VRF heat exchanger and the AHU heat exchanger, and the reversing valve is configured to adjust a flow direction of the refrigerant through the vapor compression circuit to adjust operation of the HVAC system between a cooling operation mode and a heating operation mode.

IPC Classes  ?

• F24F 1/022 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
• F24F 1/029 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by the layout or mutual arrangement of components, e.g. of compressors or fans
• F24F 1/0326 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
• F24F 11/88 - Electrical aspects, e.g. circuits
• F24F 13/20 - Casings or covers

Abstract

Aspects of the present disclosure include methods, apparatus, and systems for disabling a plurality of isolators, iteratively activating subsets of a plurality of isolators, transmitting, for each activated subset of the plurality of isolators, an interrogating signal toward, the plurality of isolators and a plurality of peripheral devices, receiving, for each activated subset of the plurality of isolators, corresponding response signals from one or more of the plurality of peripheral devices, and generating a network topography of one or more of the plurality of peripheral de vices or the plurality of isolators based on the response signals.

IPC Classes  ?

• H04L 12/40 - Bus networks
• H04L 12/403 - Bus networks with centralised control, e.g. polling
• H04L 41/12 - Discovery or management of network topologies
• G08B 17/00 - Fire alarmsAlarms responsive to explosion
• G08B 25/00 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
• G08B 29/00 - Checking or monitoring of signalling or alarm systemsPrevention or correction of operating errors, e.g. preventing unauthorised operation

Abstract

A support assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a bracket comprising a base and an arm extending from the base. The arm includes a flange having a plurality of connectors configured to facilitate coupling to a clamp at each of a plurality of positions along the arm. The arm is configured to engage with and support a conduit of the HVAC system via the clamp.

IPC Classes  ?

• F24F 13/02 - Ducting arrangements
• F16L 3/12 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
• F16L 3/123 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface
• F16L 3/22 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals

Abstract

Example implementations include a method, system, and computer-readable medium, comprising collecting environment information by a first reader device configured to control access to a first secure area via ultrasound communications. The implementations further include determining first input information based on the environment information, the first input information. Additionally, the implementations further include determining, via a machine learning model, access intention information identifying the first secure area or a second secure area as an object of interest based on the first input information and second input information, wherein the second input information is associated with a second reader device that controls access to the second secure area and is co-located with the first reader device. Additionally, the implementations further include providing, based on the access intention information, access to one of the first secure area or the second secure area.

IPC Classes  ?

• G07C 9/28 - Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
• G08C 23/00 - Non-electric signal transmission systems, e.g. optical systems

Abstract

Example implementations include a method, apparatus, and computer-readable medium for object detection, comprising detecting a first object in a first image frame and a second image frame, wherein the first object is bounded by region-of-interest (ROI) boundaries generated by an ROI detection model. The implementations further include calculating a speed of the first object using positions of the first object in the first and second image frame, identifying at least one image frame that should include the first object based on a calculated speed of the first object. The implementations further include determining that the at least one image frame should be added to a training dataset for the ROI detection model in response to detecting that the ROI detection model did not generate a ROI boundary in the at least one image frame, and subsequently re-training the ROI detection model using said training dataset.

IPC Classes  ?

• G06F 18/214 - Generating training patternsBootstrap methods, e.g. bagging or boosting
• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G06V 10/62 - Extraction of image or video features relating to a temporal dimension, e.g. time-based feature extractionPattern tracking
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 20/40 - ScenesScene-specific elements in video content

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system (10) includes a distillation system (102) configured to distill a mixture, a heat pump system (100) fluidly coupled to the distillation system (102), wherein the heat pump system (100) is configured to transfer heat between a working fluid circulated through the heat pump system (100) and a flow of fluid received from the distillation system (102), and a heat storage system (150) comprising a heat storage vessel (174), wherein the heat storage system (150) is configured to capture heat from the working fluid and to store the heat in the heat storage vessel (174) as a heated fluid.

IPC Classes  ?

• F25B 30/06 - Heat pumps characterised by the source of low potential heat
• F25B 25/00 - Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a compressor (32), a motor (50) configured to drive a rotor of the compressor, and bearings configured to support a rotor load of the rotor. The HVAC&R system also includes a normal operation tank configured to supply a fluid in a liquid or diphasic form to lubricate the bearings or a portion thereof in normal operating conditions, and a buffer trip tank configured to supply the fluid in a vapor form to lubricate the plurality of bearings or a portion thereof in abnormal operating conditions.

IPC Classes  ?

• F16C 17/24 - Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired conditions, e.g. for preventing overheating, for safety
• F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
• F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
• F16C 41/00 - Other accessories for bearings
• F25B 31/00 - Compressor arrangements
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F16C 17/20 - Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with emergency supports or bearings

Abstract

An energy efficient heat pump includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive a call for heating, determine an upper discharge pressure limit of the energy efficient heat pump, determine a lower discharge pressure limit of the energy efficient heat pump, determine a target discharge pressure value, where the target discharge pressure value is less than or equal to the upper discharge pressure limit and is greater than or equal to the lower discharge pressure limit, and modulate operation of the variable capacity compressor such that a detected discharge pressure of the heat pump approaches the target discharge pressure value.

IPC Classes  ?

• F25B 30/02 - Heat pumps of the compression type
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

An assembly includes a frame configured to couple to a valve, an actuating arm movably coupled to the frame and configured to move a movable component of the valve to adjust a position of the movable component, and a biasing member coupled to the actuating arm and the frame. The biasing member is configured to bias the actuating arm in a first direction relative to the frame. The assembly further includes one or more shape memory alloy (SMA) elements coupled to the actuating arm and the frame. Responsive to an activation that causes the one or more SMA elements undergo a dimensional transformation, the one or more SMA elements are configured to operate against the biasing member to bias the actuating arm in a second direction opposite the first direction relative to the frame.

IPC Classes  ?

• F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic

Abstract

The present disclosure includes a heating, ventilation, and/or air-conditioning (HVAC) control system with a controller and a device communicatively coupled to the controller. The device is configured to implement an engagement protocol, wherein to grant the controller write access to protected registers of the device the engagement protocol functions to require: receiving a reset command at a reset register of the device; receiving a passcode at a passcode register of the device; matching the passcode received at the passcode register to an authentication passcode; and receiving or matching the passcode within a timeframe defined by a timer.

IPC Classes  ?

• F24F 11/63 - Electronic processing
• G06F 21/31 - User authentication

Abstract

A security camera system includes a base unit and sensor modules for generating image data. The base unit includes several mounting sockets arranged at different elevational and azimuthal directions around the base unit, and the sensor modules attach, for example, magnetically, to the mounting sockets. Each mounting socket includes a socket ID, which is read by a reader module of the sensor modules and used to stitch together the image data from different sensor modules. The sensor modules are powered wirelessly via induction and communicate wirelessly with the base unit via wireless transceivers and antennas.

IPC Classes  ?

• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
• H04B 5/72 - Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
• H04B 5/77 - Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
• H04B 5/79 - Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
• H04N 23/45 - Cameras or camera modules comprising electronic image sensorsControl thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
• H04N 23/58 - Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
• H04N 23/60 - Control of cameras or camera modules
• H04N 23/65 - Control of camera operation in relation to power supply

Abstract

Example aspects include methods, apparatuses, and computer-readable medium for receiving, by a computing device, data from one or more occupancy detection sensors that are mounted on or integrated within a sensor base, wherein the sensor base is mounted to a ceiling in an area of a building, wherein a primary sensor is mounted on or integrated within the sensor base; determining, by the computing device, whether the data is indicative of a change in an occupancy status of the area of the building; and adjusting, by the computing device, a sensitivity of the primary sensor responsive to the data being indicative of the change in the occupancy status of the area of the building.

IPC Classes  ?

• G08B 29/04 - Monitoring of the detection circuits
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry

Abstract

A damper for a heating, ventilation, and air conditioning (HVAC) system includes a damper frame defining an air flow path and configured to receive an air flow. The damper also includes a plurality of damper blades extending within the air flow path and across a width of the damper frame. Additionally, the damper includes a plurality of actuators. Each actuator of the plurality of actuators is configured to drive rotation of a respective damper blade of the plurality of damper blades.

IPC Classes  ?

• F24F 13/14 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built-up of tilting members, e.g. louvre
• F24F 11/72 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure
• F24F 140/40 - Damper positions, e.g. open or closed

Abstract

Example implementations include a method, apparatus, and computer-readable medium comprising receiving, by a short range communication radio in a control panel, a short range communication signal transmitted by a device; determining, by the control panel, whether the device is a known device; and automatically disarming the control panel responsive to recognizing the device as the known device.

IPC Classes  ?

• G08B 25/00 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
• G07C 9/00 - Individual registration on entry or exit
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04W 76/14 - Direct-mode setup

Abstract

The present application provides a heat pump system, comprising a first one-way closed pipe assembly and a first discharge pipe assembly; the first discharge pipe assembly comprises a first discharge pipe; the first discharge pipe has a first discharge pipe outlet and a first discharge pipe inlet, the first discharge pipe inlet being connected to a first pipe, and the first discharge pipe outlet being connected to pipes and/or parts in the heat pump system except the first one-way closed pipe assembly. In the heat pump system, the first discharge pipe assembly allows a refrigerant in the first one-way closed pipe assembly to flow out of the first one-way closed pipe assembly, avoiding damage to the first one-way closed pipe assembly.

IPC Classes  ?

• F25B 30/02 - Heat pumps of the compression type

Abstract

A screw compressor, comprising: a housing (101), a pair of rotors (221), an exhaust channel (218) and a silencing device (220). The silencing device (220) is arranged in the exhaust channel (218), and the silencing device (220) comprises at least one mounting sheet (219) and a plurality of silencing units (210). The silencing device (220) is configured such that compressed gas entering the exhaust channel (218) from a rotor accommodating cavity (213) flows through a side wall (234) of the mounting sheet (219) and the silencing units (210) and then is discharged from an exhaust port (106). In addition, the silencing device (220) can balance gas pressure loss caused by the silencing device by increasing the flow area of a silencing channel, without affecting the exhaust pressure of the screw compressor.

IPC Classes  ?

• F04C 29/06 - Silencing

Abstract

Example aspects include a method, apparatus, and computer-readable medium for surveillance data processing for sanitation verification, comprising determining, by a processor based on area identification information received by a surveillance system of a premises, that an area of the premises requires periodic sanitation. The aspects further include determining, by the processor based on data captured by one or more sensors of the surveillance system, whether one or more persons associated with the cleaning staff profile have visited the area within a threshold period of time. Additionally, the aspects further include sending, by the processor, a first notification to a facilities management device in response to the one or more persons associated with the cleaning staff profile not having visited the area within the threshold period of time.

IPC Classes  ?

• G08B 21/24 - Reminder alarms, e.g. anti-loss alarms
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects
• G07C 1/10 - Registering, indicating, or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
• G07C 9/32 - Individual registration on entry or exit not involving the use of a pass in combination with an identity check
• G07C 9/38 - Individual registration on entry or exit not involving the use of a pass with central registration
• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A heat exchanger for a heating, ventilation, and/or air conditioning (HVAC) system includes a header having a longitudinal axis, a first plurality of microchannel tubes coupled to the header, where each microchannel tube of the first plurality of microchannel tubes has a first width, and a second plurality of microchannel tubes coupled to the header, where each microchannel tube of the second plurality of microchannel tubes has a second width greater than the first width.

IPC Classes  ?

• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation

Abstract

A pathogen detection system for a building includes multiple pathogen detectors positioned in the building at different locations. The pathogen detectors are configured to output detection data including a detected presence of a pathogen. The pathogen detection system includes processing circuitry configured to obtain the detection data from the pathogen detectors. The processing circuitry is also configured to determine a responsive action based on the detected presence of the pathogen, and the locations. The responsive action includes a magnitude of effect and a magnitude of locality. The processing circuitry is configured to perform the responsive action or initiate the responsive action.

IPC Classes  ?

• G08B 21/12 - Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
• G08B 25/14 - Central alarm receiver or annunciator arrangements

Abstract

Example implementations include a method, apparatus, and computer-readable medium comprising determining, by a processor of a control panel, that a security event has happened, wherein the security event is associated with a user identification or authentication; capturing one or more still images or videos by at least one camera in the control panel subsequent and in response to determining that the security event has happened; and using the one or more still images or videos to perform facial recognition.

IPC Classes  ?

• G06F 21/40 - User authentication by quorum, i.e. whereby two or more security principals are required
• G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
• G06V 20/40 - ScenesScene-specific elements in video content
• G07C 9/00 - Individual registration on entry or exit
• G07C 9/25 - Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
• H04N 23/61 - Control of cameras or camera modules based on recognised objects
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

Systems and methods for training and executing machine-learning models for building data conversion are disclosed. A system can identify a plurality of unstructured object names each associated with a respective object tag. The plurality of unstructured object names can correspond to a plurality of building devices of a building. The system can determine a plurality of embeddings based on the plurality of unstructured object names. The plurality of embeddings can include a position embedding. The system can train a machine-learning model based on (i) the plurality of embeddings including the position embedding, and (ii) the respective object tag of the plurality of unstructured object names. The machine-learning model can be trained to generate corrected object tags for the plurality of building devices.

IPC Classes  ?

• G06N 20/00 - Machine learning
• G05B 15/02 - Systems controlled by a computer electric

Abstract

Systems and methods described herein are directed to the integration and containerization of gateway components on edge devices, which may include building device gateways. A gateway executes a building device interface container that communicates, via an interface implemented by the building device interface container, with one or more building devices of the building to control or collect data from the one or more building devices. The gateway executes a processing container that processes the data from the one or more building devices. The gateway implements a virtual communication bus that facilitates communication between the building device interface container and the processing container.

IPC Classes  ?

• G06F 9/455 - EmulationInterpretationSoftware simulation, e.g. virtualisation or emulation of application or operating system execution engines
• G05B 15/02 - Systems controlled by a computer electric

Abstract

Provided in the present application are a method and system for controlling a compressor in an air conditioning system. The method comprises controlling N compressors of an air conditioning system to operate within a plurality of operation periods. The method for controlling the N compressors to operate in one of the plurality of operation periods comprises: setting an operation period for the N compressors; setting a threshold value X for an operation time of the N compressors; during the operation period, loading all N compressors and operating same once; and if the N compressors are all loaded and accumulatively operate for an amount of time reaching the threshold value X, ending the operation period, and entering the next operation period. The present application allows a plurality of compressors to all be loaded and to operate for the same amount of time during each operation period, such that the plurality of compressors all operate in a balanced manner during each operation period, and all the compressors thus operate in a balanced manner during a plurality of operation periods. Therefore, the present application can realize even wear of compressors, thereby prolonging the service life of an air conditioning system.

IPC Classes  ?

• F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
• F24F 11/61 - Control or safety arrangements characterised by user interfaces or communication using timers
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

A method, apparatus, and computer-readable medium for counting objects in an image, including receiving a first image having a first size greater than a size threshold; formatting the first image into a second image having a second size less than the first size; estimating, using a first object counting model, an initial object count in the second image; generating a third image using a first region of the first image in response to the initial object count being greater than an object count threshold, the first region corresponding to a first portion of the initial object count greater than a second portion of the initial object count corresponding to a second region of the first image; compiling an updated object count for the first image based on the updated first portion of the initial object count in the third image; and transmitting a notification based on the updated object count.

IPC Classes  ?

• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects

Abstract

A building management system including one or more storage devices storing instructions thereon that, when executed by one or more processors, cause the one or more processors to ingest asset information; cause a graphical model of the building to include a fault indicator based on the asset information, the fault indicator corresponding to a fault occurring on a first physical asset corresponding to a first virtual asset; cause a display device of a user device to display the graphical model within a user interface; receive a selection of the fault indicator from a user via the user interface; and in response to receiving the selection, cause the user interface to navigate to a fault-driven view of the graphical model depicting the first virtual asset and one or more second virtual assets corresponding to one or more second physical assets affected by the fault occurring on the first physical asset.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• G05B 15/02 - Systems controlled by a computer electric

Abstract

Embodiments of the present disclosure relate to an air handling unit having a housing that defines an air flow path therethrough, a heat exchanger disposed within the air flow path and configured to flow a working fluid therethrough, and a nozzle configured to deliver a fire suppression agent into the air flow path.

IPC Classes  ?

• A62C 2/06 - Physical fire-barriers
• A62C 35/00 - Permanently-installed equipment
• A62C 35/02 - Permanently-installed equipment with containers for delivering the extinguishing substance
• F24F 11/33 - Responding to malfunctions or emergencies to fire, excessive heat or smoke

Abstract

A building system of a building including one or more memory devices having instructions thereon, that, when executed by one or more processors, cause the one or more processors to manage a plurality of entitlements for a plurality of subscriptions of one or more buildings with a building entitlement model, receive a first request to perform a first operation for a first subscription and a second request to perform a second operation for a second subscription, and implement the first operation on first computing resources of a first zone based on the building entitlement model in response to a first determination that the first subscription has the first entitlement and implement the second operation on second computing resources of the second zone based on the building entitlement model in response to a second determination that the second subscription has the second entitlement.

IPC Classes  ?

• H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
• G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
• G05B 15/02 - Systems controlled by a computer electric
• G05B 17/02 - Systems involving the use of models or simulators of said systems electric
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
• G06F 9/54 - Interprogram communication
• G06F 16/21 - Design, administration or maintenance of databases
• G06F 16/23 - Updating
• G06F 16/2452 - Query translation
• G06F 16/2457 - Query processing with adaptation to user needs
• G06F 16/25 - Integrating or interfacing systems involving database management systems
• G06F 16/27 - Replication, distribution or synchronisation of data between databases or within a distributed database systemDistributed database system architectures therefor
• G06F 16/28 - Databases characterised by their database models, e.g. relational or object models
• G06F 16/901 - IndexingData structures thereforStorage structures
• G06F 21/60 - Protecting data
• G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• G06Q 30/04 - Billing or invoicing
• G06Q 50/00 - Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
• G06Q 50/06 - Energy or water supply
• H04L 43/062 - Generation of reports related to network traffic
• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• H04L 67/561 - Adding application-functional data or data for application control, e.g. adding metadata

Abstract

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes a compressor having an impeller configured to rotate to pressurize a working fluid and direct pressurized working fluid through a diffuser passage of the compressor and an adjustable vane assembly. The adjustable vane assembly includes a vane configured to extend into the diffuser passage and to guide flow of the pressurized working fluid through the diffuser passage, and the adjustable vane assembly is actuatable to adjust a position of the vane within the diffuser passage.

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 31/02 - Compressor arrangements of motor-compressor units
• F25B 1/053 - Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
• F25B 25/00 - Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups
• F04D 27/02 - Surge control
• F04D 29/46 - Fluid-guiding means, e.g. diffusers adjustable
• F04D 17/10 - Centrifugal pumps for compressing or evacuating

Abstract

A compressor for a heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes an impeller having a hub, a shroud, a first blade portion extending between the hub and the shroud, and a second blade portion extending external to the shroud along a direction of extension of the first blade portion from the hub to the shroud.

IPC Classes  ?

• F04D 17/10 - Centrifugal pumps for compressing or evacuating
• F04D 29/22 - Rotors specially for centrifugal pumps
• F04D 29/24 - Vanes
• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
• F25B 41/40 - Fluid line arrangements
• F25B 1/053 - Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type

Abstract

A volute assembly includes a volute (112), where the volute (112) includes a volute body (122) and a discharge tube (124), the volute body (122) defines an inner chamber (132), the discharge tube (124) defines a discharge flow channel (134), the volute body (122) and the discharge tube (124) are connected with each other, and the discharge flow channel (134) is in communication with the inner chamber (132). The volute assembly also includes a volute tongue (114), where the volute tongue (114) is detachably mounted to the volute (112), and is configured in such a manner that the inner chamber (132) and the discharge flow channel (134) are located on opposite sides of the volute tongue (114) when the volute tongue (114) is mounted to the volute (112).

IPC Classes  ?

• F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps

Abstract

An energy efficient heat pump (102) includes a working fluid circuit (108) configured to circulate a working fluid, where the working fluid circuit (108) includes a compressor (130), a first heat exchanger (104), a second heat exchanger (106), a first expansion device (122), an economizer (180), and a reversing valve (150), where the reversing valve (150) is configured to adjust a flow direction of the working fluid through the working fluid circuit (108). The energy efficient heat pump (102) also includes a first conduit (182) of the working fluid circuit (108), where the first conduit (182) extends between the first heat exchanger (104) and the second heat exchanger (106), the economizer (180) is disposed along the first conduit (182), and the first conduit (182) is configured to direct the working fluid between the first heat exchanger (104) and the second heat exchanger (108) and through the economizer (180). The energy efficient heat pump (102) further includes an injection conduit (200) extending from the first conduit (182) to an injection port (140) of the compressor (130), where the injection conduit (200) includes a second expansion device (202), and the injection conduit (200) is configured to direct a portion of the working fluid from the working fluid circuit (108), through the second expansion device (202), through the economizer (180), and to the injection port (140) of the compressor (130) to inject of the portion of the working fluid into the compressor (130).

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 30/02 - Heat pumps of the compression type
• F25B 41/40 - Fluid line arrangements
• F25B 41/31 - Expansion valves

Abstract

An energy efficient heating, ventilation, and air conditioning (HVAC) system includes a variable capacity compressor configured to operate at a plurality to operating capacities and a control system communicatively coupled to the variable capacity compressor. The control system is configured to receive data indicative of a temperature within a conditioned space, receive data indicative of a set point temperature of the conditioned space, initialize operation of the variable capacity compressor, and ramp up operation of the variable capacity compressor to an intermediate operating capacity of the plurality of operating capacities during initial operation of the variable capacity compressor, where the intermediate operating capacity is less than a full operating capacity of the plurality of operating capacities.

IPC Classes  ?

• F24F 11/62 - Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• F25B 30/02 - Heat pumps of the compression type
• G05B 19/42 - Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine

Abstract

A heating, ventilation, and air conditioning (HVAC) system. The HVAC system includes a sensor that detects a temperature of a heater of a heating component and emits a signal indicative of the temperature. A flow management device controls a flow of electricity or fuel from a power source to the heating component. A controller receives the signal from the sensor and operates the flow management device to block the flow of electricity or fuel to the heating component when the signal is indicative of the temperature being above a set point.

IPC Classes  ?

• F24F 11/873 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
• F24F 11/32 - Responding to malfunctions or emergencies
• F24F 110/30 - Velocity
• F24F 110/40 - Pressure, e.g. wind pressure
• F24F 140/20 - Heat-exchange fluid temperature
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
• G08B 21/18 - Status alarms

Abstract

A method for detecting an event in or around a building. The method includes recording a baseline signal characteristic that characterizes a wireless signal transmitted between devices in or around the building during a baseline time period and recording a second signal characteristic that characterizes the wireless signal during a second time period after the baseline time period. An event in or around the building is detected in response to a determination that the second signal characteristic is abnormal relative to the baseline signal characteristic, the event degrading the wireless signal during the second time period. An alarm is triggered in response to detecting the event.

IPC Classes  ?

• A62C 37/40 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
• A62C 3/02 - Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
• A62C 99/00 - Subject matter not provided for in other groups of this subclass
• G08B 17/06 - Electric actuation of the alarm, e.g. using a thermally-operated switch
• G08B 17/10 - Actuation by presence of smoke or gases
• G08B 25/00 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
• G08B 25/10 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Abstract

The present disclosure relates to a heating, ventilation, and/or air conditioning (HVAC) system that includes a condensate collection assembly. The condensate collection assembly includes a drain pan configured to collect condensate generated by a heat exchanger of an HVAC system. The condensate collection assembly also includes a condensate capture receptacle configured to couple to the heat exchanger and overlap with the heat exchanger relative to a direction of air flow across the heat exchanger. The condensate capture receptacle is further configured to discharge condensate to the drain pan, and to be suspended above the drain pan relative to a direction of gravity.

IPC Classes  ?

• F24D 19/08 - Arrangements for drainage, venting or aerating
• F24F 1/36 - Drip trays for outdoor units
• F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
• F24F 13/22 - Means for preventing condensation or evacuating condensate
• F25B 39/00 - EvaporatorsCondensers
• F25D 21/14 - Collecting or removing condensed and defrost waterDrip trays

Abstract

A method of access control includes receiving an access request transaction from one of a first identity sensor. Current confidence information is determined for the access request transaction. Prior confidence information is determined for at least one prior access request transaction associated with the user from at least one second identity sensor. A total confidence score value is generated based on a confidence function applied to the current confidence information and the prior confidence information. The total confidence score value is compared with a confidence threshold value for the secure resource associated with the access request transaction. Access to the secure resource is granted, in response to determining that the total confidence score value meets the confidence threshold value. The access to the secure resource is denied, in response to determining that the total confidence score value does not meet the confidence threshold value.

IPC Classes  ?

• G07C 9/25 - Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
• G07C 9/27 - Individual registration on entry or exit involving the use of a pass with central registration
• G07C 9/28 - Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
• G07C 9/37 - Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition
• G07C 9/38 - Individual registration on entry or exit not involving the use of a pass with central registration

Abstract

Example implementations include a method, apparatus and computer-readable medium for estimating a real world distance in an image, comprising obtaining an image from a camera installed in an environment and identifying, in the image, a first set of parallel lines on a real world ground plane and a second set of parallel lines on the real world ground plane. The implementations include determining a first intersection point of the first set of parallel lines and a second intersection point of the second set of parallel lines, identifying a ground line connecting the first intersection point and the second intersection point, and estimating an internal camera matrix based on a focal length and an image size associated with the camera. The implementations include calibrating the camera for real world distance measurement by determining a perpendicular vector to the ground line based on the internal camera matrix.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods

Abstract

Example implementations include a method, apparatus and computer-readable medium for estimating a real world height in an image, comprising obtaining two images of an object, with known height, wherein each image depicts the object at a different position that is estimated using a homography matrix. The homography matrix transforms an image plane associated with the image to a real world plane. The implementations include generating a first vector that intersects with the object and points to a real world ground plane using the first image and a second vector that intersects with the same point on the object and points to the real world ground plane using the second image. Additionally, the implementations further include calibrating the camera by determining a height of the center of a camera lens of the camera using an intersection of the first vector and the second vector.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods

Abstract

A system including a processing circuit configured to receive tags describing points of a piece of equipment, the piece of equipment connected to the system. The processing circuit configured to map the tags to classes of a schema of a graph data structure. The processing circuit configured to perform clustering to generate clusters of the points. The processing circuit configured to identify, based on the clusters, relationships in the schema of the graph data structure between the tags mapped to the classes of the schema of the graph data structure. The processing circuit configured to communicate data to a second system based at least in part on the tags mapped to the classes and the relationships.

IPC Classes  ?

• G06F 16/21 - Design, administration or maintenance of databases
• G06F 16/901 - IndexingData structures thereforStorage structures
• G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads

Abstract

A compressor includes a rotatable impeller configured to increase a pressure of one or more fluids from a compressor inlet to a compressor outlet. The compressor includes a primary and a secondary impeller section respectively having a first and a second set of impeller blades and respectively configured to pressurize a first and a second fluid source. In another aspect, a refrigeration system includes a condenser, an evaporator, an expansion apparatus, an economizer or intercooler, and a compressor. The compressor includes a rotatable impeller with a primary impeller section having a first set of impeller blades and configured to pressurize a refrigerant received from the evaporator, and a secondary impeller section with a second set of impeller blades configured to pressurize refrigerant received from the economizer or intercooler.

IPC Classes  ?

• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 29/30 - Vanes
• F25B 5/00 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity

Abstract

An energy efficient heat pump (102) for a heating, ventilation, and air conditioning (HVAC) system (100) includes a working fluid circuit (108) and a first conduit (202) of the working fluid circuit (108), where the first conduit (202) extends between a first heat exchanger (104) and a second heat exchanger (106) of the working fluid circuit (108). The energy efficient heat pump (102) also includes a compressor (130) disposed along the working fluid circuit (108), where the compressor (130) is configured to direct a working fluid along the working fluid circuit (108), and the compressor (130) includes a suction port (134) and an injection port (140). The energy efficient heat pump (102) further includes an injection conduit (200) extending from the first conduit (202) to the injection port (140) of the compressor (130), where the injection conduit (200) includes an expansion device (206), and the injection conduit (200) is configured to direct a portion of the working fluid from the working fluid circuit (108), through the expansion device (206), and to the injection port (140).

IPC Classes  ?

• F25B 13/00 - Compression machines, plants or systems, with reversible cycle
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 31/02 - Compressor arrangements of motor-compressor units
• F25B 41/34 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators

Abstract

A building management system includes a communications bus, and devices coupled to the communications bus. The devices are coupled to the communications bus and configured to communicate on the communications bus using a master-slave token passing protocol. A first one of the devices has an active node table stored therein. The active node table includes multiple nodes. Each node represents one of the devices participating in a token passing ring used to exchange information among the devices via the communications bus using the master-slave token passing protocol. The first device is configured to monitor the active node table for new nodes and to identify a new device communicating on the communications bus in response to a determination that the active node table includes a new node.

IPC Classes  ?

• G06F 13/42 - Bus transfer protocol, e.g. handshakeSynchronisation
• G05B 15/02 - Systems controlled by a computer electric
• G06F 13/362 - Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
• H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
• H04L 41/0806 - Configuration setting for initial configuration or provisioning, e.g. plug-and-play

Abstract

A hydrogen gas filling system includes a chiller configured to cool a first fluid, a condensing unit configured to place the first fluid and a second fluid in a first heat exchange relationship, and a flooded evaporator having a housing shell, a gas suction pipe disposed in the housing shell, and a tube bundle disposed in the housing shell. The flooded evaporator is configured to receive a liquid of the second fluid in the housing shell such that the tube bundle is submerged in the liquid, receive a compressed hydrogen gas in the tube bundle such that a second heat exchange relationship between the compressed hydrogen gas and the liquid of the second fluid cools the compressed hydrogen gas and evaporates the liquid into a gas of the second fluid, and remove the gas from the housing shell via the gas suction pipe.

IPC Classes  ?

• F17C 5/06 - Methods or apparatus for filling pressure vessels with liquefied, solidified, or compressed gases for filling with compressed gases
• F17C 13/02 - Special adaptations of indicating, measuring, or monitoring equipment

Abstract

The present application provides a condenser, comprising: a housing, a first heat exchange tube set, a second heat exchange tube set, and a third heat exchange tube set, a pair of first baffles, a second baffle, and a third baffle, the second heat exchange tube set and the third heat exchange tube set being arranged at two sides of the first heat exchange tube set, each of the pair of first baffles being respectively adjacent to the two sides of the first heat exchange tube set, the second baffle being adjacent to one side of the second heat exchange tube set that is close to the first heat exchange tube set, and the third baffle being adjacent to one side of the third heat exchange tube set that is close to the first heat exchange tube set, wherein the pair of first baffles, the second baffle, and the third baffle are configured to cause the first heat exchange tube set to receive a refrigerant from a refrigerant inlet, and cause the second heat exchange tube set and the third heat exchange tube set to receive the refrigerant from the first heat exchange tube set via a horizontal fluid channel, and a first vertical fluid channel and a second vertical fluid channel. The condenser in the present application has high heat exchange efficiency.

IPC Classes  ?

• F25B 39/04 - Condensers

Abstract

A measurement apparatus (100), which is arranged on a pipe (101), and is configured to measure the liquid content of a medium within the pipe (101); said apparatus comprises: a light transmission member (210), a light generation device (203), and a light reception device (204); the light generation device (203) is configured to emit emission light toward the light transmission member (210) that passes through an outer boundary wall (214) of the light transmission member (210) and has a preset emission angle, and the light reception device (204) is configured to receive reflection light after the emission light is reflected by an inner boundary wall (215) of the light transmission member (210). The measurement apparatus (100) can directly detect whether liquid is carried in a gaseous refrigerant exiting from an evaporator, as well as measure the amount of carried liquid. The refrigeration system can adjust a throttling apparatus in a timely manner according to a measured result, and prevents the performance of the refrigeration system and a compressor from being affected.

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• G01N 21/59 - Transmissivity

Abstract

The present disclosure relates to a building management system (BMS) comprising one or more field equipment controllers, and at least one containerized engine configured within a server to control the one or more field equipment controllers.

IPC Classes  ?

• G05B 15/02 - Systems controlled by a computer electric

Abstract

A monitoring system is configured to monitor an environment within an enclosure of a heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system. The monitoring system includes a sensor configured to acquire data indicative of an environmental parameter value within the enclosure. The monitoring system also includes a controller configured to receive the data from the sensor, to determine occurrence of a thermal event within the enclosure based on the data, and to instruct a circuit breaker of the HVAC&R system to transition to a fault configuration in response to determining the occurrence of the thermal event.

IPC Classes  ?

• F24F 11/38 - Failure diagnosis
• F24F 11/52 - Indication arrangements, e.g. displays
• F24F 11/88 - Electrical aspects, e.g. circuits
• F24F 11/89 - Arrangement or mounting of control or safety devices
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

A process liquid filter system for a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a plurality of process liquid filters arranged in parallel with one another relative to flow of process liquid through the process liquid filter system, where each process liquid filter of the plurality of process liquid filters includes an inlet valve configured to receive unfiltered process liquid and an outlet valve configured to discharge filtered process liquid. The process liquid filter system also includes a purge system having a respective purge inlet valve coupled to each process liquid filter of the plurality of process liquid filters, where each respective purge inlet valve is configured to control flow of a purge gas into the process liquid filter corresponding to the respective purge inlet valve, and a respective purge discharge valve coupled to each process liquid filter of the plurality of process liquid filters, where each respective purge discharge valve is configured to discharge the filtered process liquid from the process liquid filter corresponding to the respective purge discharge valve.

IPC Classes  ?

• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
• F25B 43/04 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
• F25B 31/00 - Compressor arrangements
• F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves

Abstract

A method for communication between a plurality of security sensors includes identifying and tracking a potential security threat by a first security sensor. One or more security sensors located within a predefined proximity of the first security sensor are identified by the first security sensor. Status information and location information of each of the one or more security sensors are received by the first security sensor. A second security sensor is selected from the one or more security sensors based on the status information and the location information. The second security sensor is configured to track the potential security threat. Information related to the potential security threat is transmitted by the first security sensor to the second security sensor.

IPC Classes  ?

• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras

Abstract

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system (100) includes an evaporator (112) configured to place a working fluid in a heat exchange relationship with a cooling load (106) to cool the cooling load (106) and heat the working fluid, a first compressor (108) configured to receive the working fluid heated via the evaporator (112) and configured to pressurize the working fluid, a second compressor (114) configured to receive the working fluid pressurized by the first compressor (112), a condenser (118) configured to receive the working fluid from the second compressor (114) and place the working fluid in a heat exchange relationship with a heating load (107) to heat the heating load (107) and cool the working fluid; and an economizer (120) configured to receive the working fluid cooled by the condenser (118), place the working fluid in a heat exchange relationship with an external fluid to condition the working fluid in the economizer (120), separate the working fluid into vapor working fluid and liquid working fluid, and direct the liquid working fluid toward the evaporator (112).

IPC Classes  ?

• F25B 1/10 - Compression machines, plants or systems with non-reversible cycle with multi-stage compression
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 41/40 - Fluid line arrangements
• F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves

Abstract

A heating, ventilation, air conditioning, and refrigeration system includes: two or more cooling coils configured to receive a flow of a refrigerant; a mechanical cooling loop in fluid communication with the two or more cooling coils; a free-cooling loop in fluid communication with the cooling coils; a pump in fluid communication with the cooling coils; and a controller. The controller is configured to operate a speed of the pump to apportion the flow of the refrigerant between the two or more cooling coils such that a first portion of the refrigerant flowing through at least one of the two or more cooling coils is flowing along the mechanical cooling loop and a second portion of the refrigerant flowing through at least one of the two or more cooling coils is flowing along the free-cooling loop. The mechanical cooling loop and the free-cooling loop are configured to operate simultaneously.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F25B 25/00 - Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

Example implementations include a refrigeration system including a compressor having a rotor separating a low pressure side from a high pressure side, a sump having a first fluid connection to the low pressure side of the compressor and a second fluid connection to the high pressure side of the compressor, a vent pipe fluidly connecting the first fluid connection and the second fluid connection, an intermediate reservoir located within the second fluid connection between the high pressure side of the compressor and the sump, wherein the intermediate reservoir is configured to collect oil from the compressor, and a valve located within the second fluid connection between the intermediate reservoir and the sump, wherein the valve is configured to release at least a portion of the oil from the intermediate reservoir in response to a level of the oil in the intermediate reservoir exceeding a liquid level set point.

IPC Classes  ?

• F25B 31/00 - Compressor arrangements
• F25B 43/02 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant

Abstract

Systems, methods, and non-transitory computer-readable media for optimization and autoconfiguration of edge processing devices are disclosed. A cloud computing system can receive a request to configure a target building device. The cloud computing system can identify, based on the target building device, a connector template for the target building device. The connector template can include one or more parameters for a connector component configured to cause the target building device to communicate with the cloud computing system, cloud computing system can generate the connector component for the target building device based on the one or more parameters, cloud computing system can deploy the connector component to the target building device.

IPC Classes  ?

• H04L 41/0806 - Configuration setting for initial configuration or provisioning, e.g. plug-and-play
• H04L 67/10 - Protocols in which an application is distributed across nodes in the network
• H04L 67/00 - Network arrangements or protocols for supporting network services or applications

Abstract

Example implementations include a method, apparatus, and computer-readable medium for a wireless router. The router includes a first radio frequency (RE) modem and a hardware card slot configured to receive an RE modem card configured to communicate according to a second RE protocol with one or more electronic devices. The router is configured to identify first events based on the traffic on a first WLAN protocol; translate the input received from the one or more electronic devices to a feature of a device profile; identify second events based on input received from the one or more electronic devices via the second RE protocol; generate a command to control a first device of the wireless devices or the electronic devices based on the device; and translate the command from the device profile of the first device to the first WLAN protocol or the second RF protocol.

IPC Classes  ?

• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• H04L 67/1396 - Protocols specially adapted for monitoring users’ activity
• H04L 67/303 - Terminal profiles
• H04L 67/565 - Conversion or adaptation of application format or content
• H04L 69/08 - Protocols for interworkingProtocol conversion
• H04L 69/18 - Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• H04W 4/33 - Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings

Abstract

An acoustically absorptive system for a heating, ventilation, and/or air conditioning (HVAC) system includes a panel assembly. The panel assembly includes at least one acoustic absorptive member and a porous housing disposed about the at least one acoustic absorptive member such that a porous layer of the housing covers the at least one acoustic absorptive member at opposing faces of the panel assembly. A mounting assembly positions the panel assembly in a chamber of the HVAC system such that a gap is defined between a rear surface of the panel assembly and a wall of the chamber, the mounting assembly including one or more channels attached to the chamber.

IPC Classes  ?

• F24F 13/02 - Ducting arrangements
• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Abstract

The present disclosure discloses a flash tank (200) for an HVAC system (100) that minimizes liquid carryover and make its size be smaller. The flash tank (200) includes a housing (210) that houses one or more flashing units (250). The flashing unit (250) comprises an inner shell (270), an outer shell (280) maintaining a gap (290) with the inner shell (270), and one or more inlets (310) to direct flow of refrigerant through the gap (290) to aid partial evaporation of the refrigerant.

IPC Classes  ?

• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat

Abstract

A HVAC&R system (10) may include a compressor (32) to motivate a working fluid through a vapor compression circuit and a condenser (34) disposed along the vapor compression circuit to transfer heat from the working fluid to one or more condenser conditioning fluids (82). The HVAC&R system (10) may also include a double bundle evaporator (92) disposed along the vapor compression circuit having a first evaporator tube bundle (58) and a second evaporator tube bundle (58). Additionally, the double bundle evaporator (92) may selectively transfer heat to the working fluid from a first evaporator conditioning fluid (84) operatively within the first evaporator tube bundle (58), a second evaporator conditioning fluid (84) operatively within the second evaporator tube bundle (58), or both. Moreover, the first evaporator tube bundle (58) may be fluidly coupled to an air distribution system via a first fluid circuit, and the second evaporator tube bundle may be fluidly coupled to a heat source (62) independent of the air distribution system.

IPC Classes  ?

• F25B 25/00 - Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups
• F25B 39/02 - Evaporators
• F25B 39/04 - Condensers
• F24F 5/00 - Air-conditioning systems or apparatus not covered by group or

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system (10) may include a compressor (32) to motivate a working fluid through a vapor compression circuit and an evaporator (38) disposed along the vapor compression circuit to transfer heat to the working fluid from one or more evaporator conditioning fluids (84). The HVAC&R system (10) may also include a multi-bundle condenser (94), disposed along the vapor compression circuit, having at least two condenser tube bundles (54). Additionally, the multi-bundle condenser (94) may selectively transfer heat from the working fluid to a first condenser conditioning fluid (82) operatively within a first condenser tube bundle (54) fluidly coupled to a cooling tower (56) via a first fluid circuit, a second condenser conditioning fluid (82) operatively within a second condenser tube bundle (54), or both.

IPC Classes  ?

• F25B 39/04 - Condensers
• F25B 30/06 - Heat pumps characterised by the source of low potential heat
• F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
• F28D 21/00 - Heat-exchange apparatus not covered by any of the groups

Abstract

A generator (120), comprising: a housing (200), and a housing accommodating cavity (303) defined by the housing (200). The housing accommodating cavity (303) comprises an upper accommodating cavity portion (304), a middle accommodating cavity portion (306) and a lower accommodating cavity portion (308), wherein a first heat-exchange tube group (382) is arranged in the upper accommodating cavity portion (304), and is immersed in an upper solution; a second heat-exchange tube group (384) is arranged in the lower accommodating cavity portion (308); and a distributor (307) is arranged in the middle accommodating cavity portion (306), and the distributor (307) receives the upper solution from the upper accommodating cavity portion (304) and distributes the upper solution discharged from the upper accommodating cavity portion (304) onto the second heat-exchange tube group (384). By means of dividing a heat-exchange tube group into two heat-exchange tube groups, the height of the upper flooded heat-exchange tube group (382) is decreased, thereby reducing the influence of hydrostatic pressure on a bottom pipeline; and the lower falling-film heat-exchange tube group (384) is far away from a high-temperature heat source inlet, which effectively prevents the solution from crystallizing at the falling-film heat-exchange tube group due to an excessive temperature difference.

IPC Classes  ?

• F25B 33/00 - BoilersAnalysersRectifiers
• F25B 37/00 - AbsorbersAdsorbers
• F25B 41/40 - Fluid line arrangements
• F25B 39/02 - Evaporators
• F25B 39/04 - Condensers

Abstract

12122.

IPC Classes  ?

• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing

Abstract

Provided in the present application are a heat pump system and a four-way valve. The heat pump system comprises a compressor, a first circulation path, a second circulation path, a third circulation path and a four-way valve. The heat pump system has a complete refrigeration and partial heating mode or a complete heating and partial refrigeration mode. When the heat pump system is in the complete refrigeration and partial heating mode, the four-way valve can be adjusted so as to adjust the flow rate of a fluid flowing through the first circulation path and the third circulation path. When the heat pump system is in the complete heating and partial refrigeration mode, the four-way valve can be adjusted so as to adjust the flow rate of the fluid flowing through the second circulation path and the third circulation path. According to the present application, when the heat pump system is in the complete refrigeration and partial heating mode, the heating capacity can be adjusted; and when the heat pump system is in the complete heating and partial refrigeration mode, the refrigerating capacity can be adjusted.

IPC Classes  ?

• F25B 13/00 - Compression machines, plants or systems, with reversible cycle
• F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves
• F25B 41/40 - Fluid line arrangements
• F25B 39/00 - EvaporatorsCondensers
• F25B 47/02 - Defrosting cycles
• F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug

Abstract

The present application provides an evaporator, comprising: a housing, a first heat exchange tube set, a second heat exchange tube set, a first side heat exchange tube baffle device, a second side heat exchange tube baffle device, and a redistribution device. The first heat exchange tube set is located above the second heat exchange tube set, and the number of columns of the first heat exchange tube set is greater than that of the second heat exchange tube set. The first side heat exchange tube baffle device and the second side heat exchange tube baffle device are respectively disposed on two opposite sides of the first heat exchange tube set and the second heat exchange tube set, and are arranged along the outer contours of the first heat exchange tube set and the second heat exchange tube set, so as to guide a refrigerant to flow from the first heat exchange tube set to the second heat exchange tube set. The redistribution device is disposed between the first heat exchange tube set and the second heat exchange tube set to evenly distribute the refrigerant to the second heat exchange tube set. The evaporator in the present application has higher heat exchange efficiency.

IPC Classes  ?

• F25B 39/02 - Evaporators
• F28D 3/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes an evaporator disposed along a working fluid circuit, where the evaporator is configured to transfer heat between a working fluid and a conditioning fluid, and a lubricant separation system. The lubricant separation system includes a lubricant separation heat exchanger configured to receive a mixture of the working fluid and a lubricant from the evaporator and to transfer heat from a flow of heated fluid to the mixture to separate the working fluid from the lubricant. The lubricant separation system is also configured to direct the working fluid separated from the lubricant to the evaporator.

IPC Classes  ?

• F25B 43/02 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
• F25B 31/00 - Compressor arrangements
• F25B 39/02 - Evaporators

Abstract

Provided in the present application is a heat pump system, comprising a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger and a valve device. The valve device comprises a first port, a second port, a third port, a fourth port, a fifth port and a sixth port, wherein the first port and the third port are connected to a suction port of the compressor; and the sixth port, the second port and the fourth port are respectively connected to a first port of the first heat exchanger, a first port of the second heat exchanger and a first port of the third heat exchanger. When the heat pump system is operated in a refrigeration mode, the first port of the first heat exchanger is in unidirectional communication with the suction port; and when the heat pump system is operated in a heating mode or a defrosting mode, the first port of the second heat exchanger is in unidirectional communication with the suction port. When the heat pump system is operated in a simultaneous refrigeration and heating mode, the first port of the third heat exchanger is in unidirectional communication with the suction port. The heat pump system of the present application can limit the unidirectional flow of a refrigerant in the heat exchanger, which is not in a refrigerant circulation loop, to the compressor without affecting the pressure drop in the refrigerant circulation loop.

IPC Classes  ?

• F25B 13/00 - Compression machines, plants or systems, with reversible cycle
• F25B 41/40 - Fluid line arrangements
• F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves
• F25B 39/00 - EvaporatorsCondensers
• F25B 47/02 - Defrosting cycles
• F25B 29/00 - Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
• F25B 41/30 - Expansion meansDispositions thereof
• F25B 30/02 - Heat pumps of the compression type
• F25B 41/00 - Fluid-circulation arrangements
• F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• F25B 41/26 - Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves

Abstract

An energy efficient heat pump includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive a call for heating, determine an upper discharge pressure limit of the energy efficient heat pump, determine a lower discharge pressure limit of the energy efficient heat pump, determine a target discharge pressure value, where the target discharge pressure value is less than or equal to the upper discharge pressure limit and is greater than or equal to the lower discharge pressure limit, and modulate operation of the variable capacity compressor such that a detected discharge pressure of the heat pump approaches the target discharge pressure value.

IPC Classes  ?

• F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
• F25B 30/02 - Heat pumps of the compression type

Abstract

A pipeline (180) provided with a silencing structure, the pipeline comprising a pipe (150) and a silencing structure (100). The pipe (150) has a uniform diameter. The silencing structure (100) comprises a main silencing pipe (210) and a baffle (220). The baffle (220) is disposed around the main silencing pipe (210) and is connected on the main silencing pipe (210), and the baffle (220) comprises an opposite first side and second side; the main silencing pipe (210) extends on the first side and/or the second side of the baffle (220); the main silencing pipe (210) of the silencing structure (100) is disposed in the pipe (150) and is connected to the pipe (150) by means of the baffle (220); and the baffle (220) is configured to be capable of stopping a fluid from flowing through the baffle (220) from the space between the pipe (150) and the main silencing pipe (210).

IPC Classes  ?

• F16L 9/21 - Rigid pipes made of sound-absorbing materials or with sound-absorbing structure

Abstract

The present application discloses a compressor control system in a refrigeration system and a control method. The refrigeration system comprises a compressor and an economizer, wherein the compressor comprises a sliding valve, and the economizer is provided with an inlet pipeline, a gas outlet pipeline and a liquid outlet pipeline. The compressor control system comprises: inlet pipeline sensors; gas outlet pipeline sensors; liquid outlet pipeline sensors; and a control device configured to: receive pressure parameters and temperature parameters of the inlet pipeline, the gas outlet pipeline and the liquid outlet pipeline; and control movement of the sliding valve on the basis of the pressure parameters and the temperature parameters, so as to adjust the position of the sliding valve. In the present application, the change in the actual internal volume ratio of the compressor is reflected by means of the change in the mass and density of a refrigerant discharged from an exhaust port of the compressor. The influence of economizer pipeline design and pressure drop is avoided, so that the calibration result of the internal volume ratio of the compressor is more accurate and reliable.

IPC Classes  ?

• F04C 28/12 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves

Abstract

The present application provides a muffler, comprising a cylindrical housing defining an anechoic chamber, an anechoic chamber inlet and an anechoic chamber outlet that are located at two opposite axial ends of the housing, and at least one partition plate, at least one muffling pipe, and at least one liquid discharging pipe that are located in the anechoic chamber. The at least one liquid discharging pipe is provided on the at least one partition plate and extends a certain distance along the axis of the housing on at least one side of the corresponding partition plate. Each liquid discharging pipe defines a liquid discharging channel penetrating through the corresponding partition plate. Each liquid discharging pipe is arranged in close contact with the housing or is partially formed by the housing. The position of the anechoic chamber outlet relative to the at least one liquid discharging pipe is configured so that a liquid flowing out from the at least one liquid discharging pipe can be discharged through the anechoic chamber outlet. The muffler of the present application is part of an exhaust channel of a compressor, and the liquid discharging channel provided in the anechoic chamber can meet the requirement of timely discharging a lubricating liquid from the muffler, and likewise cannot reduce the muffling effect of the anechoic chamber.

IPC Classes  ?

• F04C 29/06 - Silencing
• F04C 29/02 - LubricationLubricant separation
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups

Abstract

A heating, ventilation, and air conditioning (HVAC) system includes a primary heat transfer circuit having a first heat exchanger fluidly coupled to an ambient environment and a compressor fluidly coupled to the first heat exchanger and configured to circulate a refrigerant through the primary heat transfer circuit. The HVAC system also includes a secondary heat transfer circuit having a second heat exchanger fluidly coupled to a thermal load and a pump fluidly coupled to the second heat exchanger and configured to circulate a heat transfer fluid through the secondary heat transfer circuit, where the heat transfer fluid is a non-volatile or inert fluid. The HVAC system further includes an intennediate heat exchanger disposed along the primary heat transfer circuit and the secondary heat transfer circuit, where the intermediate heat exchanger is configured to transfer heat between the refrigerant and the heat transfer fluid, and the primary heat transfer circuit is entirely external to a perimeter of the thermal load.

IPC Classes  ?

• F24F 11/32 - Responding to malfunctions or emergencies
• F24F 11/36 - Responding to malfunctions or emergencies to leakage of heat-exchange fluid
• F24F 11/70 - Control systems characterised by their outputsConstructional details thereof
• F25B 49/00 - Arrangement or mounting of control or safety devices

Abstract

A condenser includes a shell defining an inner volume configured to receive and discharge a refrigerant, a condensing section disposed within the shell, where the condensing section includes a plurality of tubes configured to circulate cooling fluid therethrough, and a subcooler disposed within the shell and configured to receive the refrigerant from the condensing section. The subcooler includes a first pass having a first set of tubes configured to circulate cooling fluid therethrough, a second pass having a second set of tubes configured to circulate cooling fluid therethrough, where the second pass is disposed downstream of the first pass relative to a flow of refrigerant through the subcooler, and a separation plate disposed between the first set of tubes and the second set of tubes.

IPC Classes  ?

• F25B 39/04 - Condensers
• F25B 40/02 - Subcoolers
• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation

Abstract

Provided is a screw compressor (100), comprising: a housing (101), a fluid channel (140), and a silencing structure (320, 520, 620). The housing (101) is provided with a compression cavity (105); the fluid channel (140) is located in the housing (101), a first end (311) of the fluid channel (140) is communicated with the outside of the compressor (100), and a second end (312) of the fluid channel (140) is communicated with the compression cavity (105); the silencing structure (320, 520, 620) is arranged on the outer side of the fluid channel (140), the silencing structure (320, 520, 620) comprises at least one cavity (308, 408, 508, 608, 708, 808, 908, 1008, 1108, 1208), and the at least one cavity (308, 408, 508, 608, 708, 808, 908, 1008, 1108, 1208) is communicated with the fluid channel (140). The silencing structure (320, 520, 620) is arranged at the fluid channel (140) of the screw compressor (100), so that the effect of pressure changes on external pipelines connected to the fluid channel (140) can be reduced.

IPC Classes  ?

• F04C 29/06 - Silencing
• F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Abstract

Provided in the present application is an evaporator assembly, comprising an evaporator and at least one oil cooler. The evaporator comprises an evaporator housing for accommodating a refrigerant. The oil cooler comprises an oil cooler housing and at least one oil cooler heat exchange pipe which is arranged in the oil cooler housing and used for receiving a fluid to be cooled. The evaporator housing comprises at least one evaporator housing opening. The oil cooler housing comprises at least one oil cooler housing opening which is in fluid communication with the at least one corresponding evaporator housing opening. The positions of the evaporator and the oil cooler are configured such that at least a portion of the liquid refrigerant in the evaporator housing can flow into the oil cooler housing via the evaporator housing opening and the corresponding oil cooler housing opening by gravity so as to be used for cooling the fluid to be cooled in the oil cooler heat exchange pipe. In addition, a gaseous refrigerant in the oil cooler housing can also flow back into the evaporator housing via the oil cooler housing opening and the corresponding evaporator housing opening.

IPC Classes  ?

• F25B 39/02 - Evaporators
• F25B 31/00 - Compressor arrangements
• F25B 41/40 - Fluid line arrangements

Abstract

A heat exchanger includes a first section of an interior volume of the heat exchanger. The first section includes a plurality of heat exchanger tubes and is configured to direct a working fluid flow across the plurality of heat exchanger tubes from an inlet of the heat exchanger. The heat exchanger includes a second section of the interior volume, where the second section is configured to direct the working fluid to an outlet of the heat exchanger. The outlet includes a center axis extending therethrough. The second section overlaps with the center axis and the first section is offset from the center axis.

IPC Classes  ?

• F25B 39/02 - Evaporators
• F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
• F28F 9/02 - Header boxesEnd plates

Abstract

Example implementations include a method, apparatus, and computer-readable medium comprising determining, by a computing device, whether a current time of day is outside a pre-determined time period and/or whether a quantity of people in an area is less than a count threshold and/or whether a security event is detected in image-surveilled data associated with a destination; and sending, by the computing device and responsive to the current time of day being outside the pre-determined time period and/or the quantity of people in the area being less than the count threshold and/or the security event being detected in the image-surveilled data associated with the destination, a notification to a user, wherein the notification is configured to provide one or more options for a security escort for the user to reach the destination.

IPC Classes  ?

• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras

Abstract

A heating, ventilation, and air conditioning (HVAC) system may include a heat exchanger to condition an air flow, and conditioning the air flow may generate condensate. The HVAC system may also include a drain pan that collects the condensate and a drain pan adapter coupled between the drain pan and the heat exchanger. The drain pan adapter may include a coil receiver for engaging a portion of the heat exchanger and a retaining arm that reduces an amount of the air flow over the portion of the heat exchanger.

IPC Classes  ?

• F24F 1/36 - Drip trays for outdoor units
• F24F 13/22 - Means for preventing condensation or evacuating condensate
• F25B 39/00 - EvaporatorsCondensers
• F25D 21/14 - Collecting or removing condensed and defrost waterDrip trays

Abstract

A heat exchanger for a heating, ventilation, and/or air conditioning system includes a manifold having an opening. The heat exchanger also includes a plurality of heat exchanger tubes, each heat exchanger tube of the plurality of heat exchanger tubes includes a body portion and an end, and the ends of the plurality of heat exchanger tubes are bundled together and extend into the manifold via the opening.

IPC Classes  ?

• F24F 13/30 - Arrangement or mounting of heat-exchangers
• F25B 39/00 - EvaporatorsCondensers
• F28F 1/00 - Tubular elementsAssemblies of tubular elements
• F28F 9/02 - Header boxesEnd plates

Abstract

A method for automatically programming a security system including a plurality of access control readers and a plurality of image sensors includes receiving user credential information from a first access control reader. A first door associated with the first access control reader is further associated with a first image sensor. A user is identified based on the user credential information and based on visual content provided by the first image sensor. Upon receiving the user credential information from one or more access control readers of the plurality of access control readers different from the first access control reader, the user is reidentified based on visual content provided by the plurality of the image sensors. The image sensor that provided the visual content used for reidentification of the user is associated with a door associated with the access control reader that provided the user credential information.

IPC Classes  ?

• G07C 9/00 - Individual registration on entry or exit

Abstract

Example aspects include methods, apparatuses, and computer-readable medium for battery testing, including selecting, by a control unit of a system, an existing load configured in the system, wherein the existing load is connected to the control unit; and testing, by the control unit, a battery of the control unit by using the existing load to discharge the battery.

IPC Classes  ?

• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• G01R 31/385 - Arrangements for measuring battery or accumulator variables
• G08B 17/00 - Fire alarmsAlarms responsive to explosion

Abstract

A heating, ventilation, and air conditioning (HVAC) system includes a fan filter assembly to filter an air flow directed through the fan filter assembly and to a conditioned space. The fan filter assembly includes a fan to circulate the air flow through fan filter assembly and a filter to filter the air flow. The fan and the filter may be coupled to the fan filter assembly such that the fan and/or the filter may be easily accessed for maintenance activity, such as removal, inspection, replacement, and/or cleaning of the fan. The fan filter assembly may increase efficiency of the HVAC system by decreasing downtime of the fan filter assembly and decreasing cost associated with installation and/or maintenance activity. Therefore, the fan filter assembly may enable the HVAC system to improve air quality of the air flow provided to the conditioned space while also improving serviceability of the fan filter assembly.

IPC Classes  ?

• F24F 13/28 - Arrangement or mounting of filters
• F24F 8/108 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
• F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/62 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
• B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Abstract

Example implementations include a method, apparatus and computer-readable medium for adjusting bandwidth in video networks, comprising monitoring a video network comprising a plurality of cameras and a network video recorder (NVR). The implementations include receiving, at a first time, a first plurality of network parameters associated with data transmitted from each of the plurality of cameras and a second plurality of network parameters associated with data received by the NVR. The implementations include identifying, using a plurality of rules, a discrepancy between the first plurality of network parameters and the second plurality of network parameters. The implementations further include transmitting, to the at least one camera, an instruction to adjust a peak bandwidth limit of the at least one camera to a new value, in response to identifying the discrepancy.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

Example implementations include a method, apparatus, and computer-readable medium for controlling access to a location, comprising receiving an access identifier and a biometric information sample from a user attempting to enter an access point. The implementations further include matching the access identifier to an authenticated cluster identifier corresponding to a biometric information cluster within a plurality of different biometric information clusters, wherein the biometric information cluster is associated with an authenticated user. Additionally, the implementations further include identifying, based on a machine learning model processing, a cluster identifier from the biometric information sample. Additionally, the implementations further include transmitting a first signal to allow access to the location in response to the inferred biometric information cluster identifier matching an authenticated cluster identifier, or a second signal to deny access to the location in response to the inferred biometric information cluster identifier not matching an authenticated cluster identifier.

IPC Classes  ?

• G07C 9/00 - Individual registration on entry or exit
• G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
• H04L 9/40 - Network security protocols
• G06N 20/00 - Machine learning
• G07C 9/37 - Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition
• G07C 9/25 - Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules

Abstract

A building management system (BMS) includes building equipment operable to affect a physical state or condition of a building and a gateway device configured to couple to the building equipment via a wireless master slave/token passing (MS/TP) bus or a wired MS/TP bus. The gateway device is configured to communicate building data to a cloud-based platform including a hub configured to receive the building data, a plurality of cloud applications, wherein the plurality of cloud applications are configured to receive the building data from the hub and process the building data to provide a building data output. The cloud-based platform is configured to communicate the building data output to and receive a command based on the building data output from at least one of a control application, an analytic application, or a monitoring application. The gateway device is further configured to operate according to the command.

IPC Classes  ?

• G05B 15/02 - Systems controlled by a computer electric
• F24F 11/58 - Remote control using Internet communication
• H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Abstract

Disclosed in the present application is a valve, comprising a housing, a first valve body, a second valve body and a control assembly. The housing defines a housing channel. The first valve body is arranged in the housing channel in a rotatable manner, defines a valve body channel, and can connect to or disconnect from the housing channel. The second valve body is arranged in the valve body channel in a rotatable manner, so as to connect to or disconnect from the valve body channel. The control assembly is configured to control the rotation of the first valve body and the second valve body. The valve of the present application is controlled to rotate by means of the control assembly. More specifically, an external control device (for example, an electric motor) controls the opening and closing of the valve simply by means of controlling a shaft rod, thereby simplifying the control logic of the valve.

IPC Classes  ?

• F16K 5/10 - Means for additional adjustment of the rate of flow
• F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
• F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves

Abstract

A heating, ventilation, air conditioning, and/or refrigeration system (10) configured to circulate a working fluid therethrough includes an economizer system (116) and a compressor system (106). A first economizer (118) of the economizer system (116) is configured to reduce a first pressure of the working fluid to provide a first vapor working fluid flow (124), and a second economizer (122) of the economizer system (116) is configured to reduce a second pressure of the working fluid in the second economizer (122) to provide a second vapor working fluid flow (128). A first compressor stage (110) of the compressor system (100) is configured to receive the second vapor working fluid flow (128) from the second economizer (122) via a second inlet (132) and an additional working fluid flow (113), separate from the second vapor working fluid flow (128), via a first inlet (130). A second compressor stage (112) of the compressor system (106) is configured to receive the first vapor working fluid flow (124) from the first economizer (118) via a third inlet (136).

IPC Classes  ?

• F25B 1/10 - Compression machines, plants or systems with non-reversible cycle with multi-stage compression
• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
• F04D 17/12 - Multi-stage pumps

Abstract

Example implementations include a method, apparatus and computer-readable medium for providing security system information using an augmented reality (AR) effect, comprising receiving security system information from at least one security device in an environment, wherein the security system information is of a first type of security event. The implementations further include selecting, from a plurality of AR effects, a first AR effect that is configured to output information of the first type. Additionally, the implementations further include determining a three-dimensional location in the environment that is associated with the security system information. Additionally, the implementations further include generating, for display on a user interface, an AR object of the first AR effect at the three-dimensional location.

IPC Classes  ?

• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
• G08B 25/14 - Central alarm receiver or annunciator arrangements

Abstract

The present application discloses a silencing unit (100) and a silencing structure. The silencing unit (100) includes a main body (102) and a neck (112). The main body (102) is provided with a cavity (104) and a liquid drain outlet (106), and the drain outlet (106) is arranged on a side wall of the main body (102) and communicates with the cavity (104). The neck (112) is arranged on a side portion of the main body (102) and connected to the main body (102), and the neck (112) is provided with a drain channel (114). Wherein the drain channel (114) communicates with the cavity (104) through the drain outlet (106), and the bottom of the cavity (104) is not lower than the bottom of the drain channel (114). The silencing unit (110) of the present application can drain a liquid entering the cavity (104) out of the cavity (104) while silencing.

IPC Classes  ?

• F04C 29/06 - Silencing

Abstract

Fault protection for security system controllers is disclosed. An apparatus in accordance with aspects of the present disclosure includes for a reverse-polarity protection circuit, an overcurrent protection circuit, or the combination of a reverse polarity circuit and an overcurrent protection circuit.

IPC Classes  ?

• H02H 11/00 - Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result

Abstract

A system may be configured to provide alarm risk score intelligence and analysis. In some aspects, the system may receive sensor information captured by one or more sensors, the sensor information indicating activity within a controlled environment, and determine an event based on the sensor information. Further, the system may receive one or more video frames from one or more video capture devices and determine context information based on the one or more video frames. Additionally, the system may modify the event based on the context information to generate an alarm and transmit a notification identifying the alarm to a monitoring device.

IPC Classes  ?

• G08B 29/18 - Prevention or correction of operating errors
• G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelengthActuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras

Abstract

A blade and an axial impeller using same. A blade (112) comprises a blade tip (216), a blade root (218), a leading edge (222) and a trailing edge (220), wherein the leading edge (222) and the trailing edge (220) respectively extend from the blade tip (216) to the blade root (218), and the blade (112) can rotate about an axis of rotation X perpendicular to a normal plane. In the projection of the normal plane of the blade (112), a circumferential included angle between the leading edge (222) and the trailing edge (220) forms a wrap angle that gradually reduces from the blade root (218) to the middle blade height of the blade (112) and gradually increases from the middle blade height to the blade tip (216). The middle blade height is an arc line formed by the center point of the blade tip (216) and the blade root (218) in a radial direction. By means of the blade, during operation of the axial impeller (100), turbulence vortices near an intersection of the leading edge (222) and the blade tip (216) of the blade (112) and near an intersection of the trailing edge (220) and the blade tip (216) of the blade (112) are significantly reduced, the intensity of the turbulence vortices is lowered, the load of an airflow on the blade (112) is uniformly reduced, the velocity and pressure distributions are more uniform, velocity and pressure pulsations are weakened, and noise is reduced.

IPC Classes  ?

• F04D 29/38 - Blades
• F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing

Abstract

The present disclosure discloses an aircraft surveillance system. The system includes one or more radar sensors, one or more cameras, and one or more controllers. The radar sensors scan an area proximal to an aircraft and provide first data corresponding to scanning of the area. The cameras capture visuals of the area and provide second data corresponding to captured visuals. The controllers communicate with the radar sensors and cameras to receive the first data from one or more radar sensors and the second data from one or more cameras. The controllers further analyze the first data and the second data to identify presence of one or more undesirable objects proximal to the aircraft and provide a notification upon detection of the undesirable objects.

IPC Classes  ?

• G08B 13/00 - Burglar, theft or intruder alarms
• G08G 5/00 - Traffic control systems for aircraft
• G08G 5/04 - Anti-collision systems

Abstract

Disclosed herein are an air guide ring (110) and an axial flow fan (100) comprising the same. The air guide ring (110) comprises: an annular air guide portion (101) comprising an air duct (105) for accommodating an impeller (104) of the axial flow fan (100) to rotate therein, wherein the annular air guide portion (101) has an inner side wall (115) and an outer side wall (116), and the air duct (105) is enclosed by the inner side wall (115); and a plurality of noise reduction devices (120) arranged on the inner side wall (115) of the annular air guide portion (101) in a circumferential direction of the air guide ring (110), and each of the noise reduction devices (120) is configured to reduce noise in the air duct (105). According to the air guide ring (110) in the present application, the noise reduction devices (120) are arranged on the inner side wall (115) of the annular air guide portion (101) such that noise reduction can be directly performed at the portion where the noise is generated, thereby reducing the noise more quickly and efficiently. In addition, by means of the principle of noise reduction through resonances, the noise reduction devices (120) in the present application achieve the noise reduction effect by resonating with sound waves having certain frequencies in the noise, which can reduce the intensity of the sound waves to a large extent, and thus make the noise reduction effect good.

IPC Classes  ?

• F04D 29/54 - Fluid-guiding means, e.g. diffusers
• F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing

Abstract

A heating, ventilation, and/or air conditioning (HVAC) system includes a variable-speed fan comprising a first fan blade, a variable frequency drive (VFD) configured to drive the variable-speed fan to rotate the first fan blade at various speeds to deliver a first airflow at variable airflow rates, and a constant-speed fan having a second fan blade. The HVAC system also includes a fan motor of the constant-speed fan configured to rotate the second fan blade at a fixed speed to deliver a second airflow, and a controller configured to determine an operational combination of the variable-speed fan and the constant-speed fan that achieves a target flow rate with a combination of the first airflow and the second airflow without operating the variable-speed fan in a stall region based on stall region data for the variable-speed fan.

IPC Classes  ?

• F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
• F24F 7/007 - Ventilation with forced flow
• F24F 11/00 - Control or safety arrangements
• F24H 15/35 - Control of the speed of fans

Abstract

A method and system may be configured to perform bullying detection using a three dimensional enhanced convolution neural network (3D enhanced CNN). In some aspects, method includes acquiring, from a video camera by a processor, a live video stream of a monitored area; preprocessing, by the processor, the video stream into a normalized low resolution video stream; applying, by the processor, 3D enhanced CNN to the normalized low resolution video stream to detect bullying in the normalized low resolution video stream; transmitting, by a transceiver communicatively coupled with the processor, a notification in response to detecting bullying. The 3D enhanced CNN includes 2 dimensional video and a third dimension in time.

IPC Classes  ?

• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
• G06V 20/40 - ScenesScene-specific elements in video content
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects

Abstract

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system (100) includes an economizer (103) configured to receive a heat transfer fluid (105) from a condenser (34). The economizer (103) is configured to separate the heat transfer fluid (105) into liquid heat transfer fluid (107) and vapor heat transfer fluid (109). The HVAC&R system (100) includes a low flow compressor (102) configured to receive the vapor heat transfer (109) fluid from the economizer (103), pressurize the vapor heat transfer fluid (109), and direct the vapor heat transfer fluid (109) to the condenser (34).

IPC Classes  ?

• F25B 1/04 - Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
• F25B 31/02 - Compressor arrangements of motor-compressor units
• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
• F04D 29/22 - Rotors specially for centrifugal pumps

Abstract

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system (100), comprising an economizer system (104) configured to reduce a pressure of a refrigerant to provide a first vapor refrigerant flow and a second vapor refrigerant flow. The HVAC&R system (100) also includes an auxiliary compressor system (106) that has a first auxiliary compressor (160) configured to receive the first vapor refrigerant flow from the economizer system (104) and pressurize the first vapor refrigerant flow to provide a first pressurized vapor refrigerant flow and a second auxiliary compressor (162) configured to receive the second vapor refrigerant flow from the economizer system (104) and pressurize the second vapor refrigerant flow to provide a second pressurized vapor refrigerant flow. The auxiliary compressor system (106) is configured to discharge a combined vapor refrigerant flow comprising the first pressurized vapor refrigerant flow and the second pressurized vapor refrigerant flow toward a condenser (34) of the HVAC&R system (100).

IPC Classes  ?

• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
• F25B 41/39 - Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator

Abstract

A condenser (100) of a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system (10) includes a shell (102) configured to receive vapor heat transfer fluid (108) and a condensing section (176). A first plurality of heat exchange tubes (170, 172) is configured to place the vapor heat transfer fluid (108) in a heat exchange relationship with cooling fluid (118) to produce liquid heat transfer fluid (116). The condenser (100) includes a subcooling section (180) having a second plurality of heat exchange tubes (174) extending within the shell (102), where the second plurality of heat exchange tubes (174) is configured to place the liquid heat transfer fluid (116) in a heat exchange relationship with cooling fluid (118) to subcool the liquid heat transfer fluid (116). The condenser (100) includes a pre-subcooler (140) disposed in the condensing section (180), where the pre-subcooler (140) includes a trough (144) configured to collect a portion of the liquid heat transfer fluid (116) and direct the portion of the liquid heat transfer fluid (116) to the subcooling section (180).

IPC Classes  ?

• F25B 39/04 - Condensers
• F25B 40/02 - Subcoolers
• F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
• F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
• F28F 9/22 - Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system (10) includes a vapor compression system (100) having a vapor compression circuit (102, 104, 106) including a compressor system (108, 126, 144) configured to direct a working fluid through the vapor compression circuit (102, 104, 106) to provide a heat exchange relationship between the working fluid and a cooling fluid, a conditioning fluid, or both. The HVAC system (10) includes a controller (200) having a memory (206) and processing circuitry (204), where the memory (206) includes instructions that, when executed, cause the processing circuitry (204) to receive a signal to initiate operation of the vapor compression system (100), receive sensor data indicative of operating conditions of the vapor compression system (100), determine an expected lift of the compressor system (108, 126, 144) based on the operating conditions of the vapor compression system (100), compare the expected lift of the compressor system (108) to a threshold value, and control operation of the vapor compression system (100) based on the comparison of the expected lift with the threshold value.

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 25/00 - Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups

Abstract

Disclosed in the present application are a condensing device and a heat pump system comprising the condensing device. The condensing device comprises: a housing; and at least two sets of heat exchange pipe bundles, wherein each set of heat exchange pipe bundles comprises a condensing pipe bundle and a supercooling pipe bundle, the supercooling pipe bundles being arranged below corresponding condensing pipe bundles; wherein the at least two sets of heat exchange pipe bundles are configured to circulate cooling media independently of each other, such that the cooling medium in each set of heat exchange pipe bundles can exchange heat with a refrigerant in a heat exchange chamber independently of each other. The condensing device of the present application is provided with two supercoolers in the same housing, wherein one supercooler can be used in a separate refrigeration mode and the other supercooler can be used in a water heating mode. In the separate refrigeration mode, the supercooler can improve the refrigeration performance of the heat pump system. In the water heating mode, the supercooler can not only improve the performance of the heat pump system, but can also reduce the size of an economizer in the heat pump system, and finally reduce the floor space of a unit.

IPC Classes  ?

• F25B 39/04 - Condensers
• F25B 30/02 - Heat pumps of the compression type
• F25B 40/02 - Subcoolers

Abstract

A heating, ventilation, and air conditioning (HVAC) system includes a heat exchanger configured to receive a working fluid and place the working fluid in a heat exchange relationship with an air flow directed across the heat exchanger, a switch configured to detect an operating parameter of the HVAC system, where the switch is configured to interrupt operation of the HVAC system in response to detection of a first value of the operating parameter greater than an operating parameter limit value, and a sensor configured to detect the operating parameter of the HVAC system. The HVAC system also includes a controller communicatively coupled to the sensor, where the controller is configured to receive data indicative of a second value of the operating parameter, compare the second value of the operating parameter to a threshold value of the operating parameter, wherein the threshold value is less than the operating parameter limit value, and adjust operation of the HVAC system in response to a determination that the second value of the operating parameter is greater than the threshold value.

IPC Classes  ?

• F24D 19/10 - Arrangement or mounting of control or safety devices
• F24F 11/00 - Control or safety arrangements
• F24F 11/70 - Control systems characterised by their outputsConstructional details thereof
• F24H 15/227 - Temperature of the refrigerant in heat pump cycles
• F24H 15/35 - Control of the speed of fans
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems