An evaporator includes a heat exchanger configured to subcool received working fluid and a distribution device configured to provide the working fluid to one or more expanders provided within the shell of the evaporator, with the expanders configured to expand the working fluid and provide said working fluid into bundles of heat exchange tubes provided within the shell of the expander.
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
F28D 21/00 - Appareils échangeurs de chaleur non couverts par l'un des groupes
3.
INTEGRATED HEATING SYSTEM USING A STIRLING HEAT PUMP
Examples of the present disclosure relate to systems and methods for providing hot water for a hot water heater and heating capacity for a climate control system by utilizing a Stirling heat pump system. The Stirling heat pump may be partially integrated into an indoor unit of the climate control system and a hot water heater. An additional indoor heat exchanger may receive heating fluid from the Stirling heat pump system to provide heating capacity in addition to another indoor heat exchanger of the climate control system. Further, the heating fluid circuit of the Stirling heat pump system may be partially integrated into a hot water tank for heating water. A controller may direct the flow of heating fluid from the Stirling heat pump to the hot water tank and/or the climate control system based on a request for heating.
F25B 9/14 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé caractérisés par le cycle utilisé, p. ex. cycle de Stirling
A compressor includes a driveshaft, a bearingless motor, one or more magnetic bearings, and a controller for the bearingless motor. The bearingless motor configured to rotate the driveshaft to compress a working fluid. The one or more magnetic bearings magnetically support the driveshaft when rotating. The controller is configured to adjust magnetic support provided by the bearingless motor to the driveshaft based on operation of the compressor. A method of operating a compressor includes rotating, with a bearingless motor, a driveshaft to compress a working fluid and magnetically supporting, with one or more magnetic bearings, the driveshaft. The method also includes magnetically supporting, with the bearingless motor, the driveshaft in which the magnetic support provided by the bearingless motor is adjusted based on operation of the compressor.
A refrigerant composition includes R1132(E) refrigerant, a second refrigerant, and a third refrigerant. The second refrigerant is one of R1234ze(E) refrigerant, R134a refrigerant, or R1234yf refrigerant. The third refrigerant is one of R32 refrigerant, R1132a refrigerant, R1123 refrigerant, and CO2. The refrigerant composition has a GWP of at or about or less than 750. A method of making a refrigerant composition for an HVACR system includes mixing an amount of R1132(E) refrigerant, an amount of a second refrigerant, and an amount of a third refrigerant. A method of retrofitting an HVACR system having an existing refrigerant composition includes adding at least one of R1132(E) refrigerant, a second refrigerant, and a third refrigerant to the existing refrigerant composition to obtain a retrofit refrigerant composition.
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a liquid refrigerant control valve fluidly connecting a liquid refrigerant line to a connection point downstream of an expansion device. A controller monitors a pressure or a mode change in the system, and activates the liquid refrigerant control valve to temporarily inject liquid refrigerant into the connection point downstream of the expansion device for refrigerant compensation.
F24F 11/84 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de valves
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
Method and systems for controlling electrical loads of a power source from a load facility are provided. The method includes determining a set of electrical loads, determining a set of conditions, predicting energy consumption using a machine learning model based on the set of electrical loads and the set of conditions, visualizing the energy consumption on a display device, and controlling the set of electrical loads under the set of conditions.
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
Process fluid from a hydronic system can be directed to an air-to-fluid heat exchanger in a heat exchange relationship with an outdoor heat exchanger of a thermal system connected to the hydronic system. The flow from the hydronic system to the air-to-fluid heat exchanger can be controlled using one or more valves. The process fluid at the air-to-fluid heat exchanger can defrost the outdoor heat exchanger, be used for free heating or cooling by being directed to a secondary load, or be used for balancing of cascade systems. A reversible fan can be provided at the outdoor heat exchanger and the air-to-fluid heat exchanger to facilitate these operations.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
10.
REFRIGERANT RECOVERY SYSTEM AND RECOVERY CART THEREOF
A refrigerant recovery system includes a refrigerant circuit with a vacuum pump, a first connection port, a second connection port, an exhaust port, and multiple-way valves that selectively fluidly connect said ports to the vacuum pump. The multiple-way valves have a first configuration, a second configuration, and a third configuration for fluidly connecting the ports to a suction inlet and a discharge outlet of the vacuum pump. A method is for recovering refrigerant from a refrigerant circuit using a refrigerant recovery system. The method includes operating the refrigerant recovery system in a liquid recovery configuration to transfer liquid refrigerant in a refrigerant circuit into one or more recovery cylinders and operating the refrigerant recovery system in a gas recovery configuration to transfer gaseous refrigerant in the refrigerant circuit into the one or more recovery cylinders. A recovery cart includes a transfer circuit of a refrigerant recovery system.
An embodiment of a crimped joint for tubing of a climate control system includes a central axis and a first tube including a throughbore, an outer end, and an annular projection. The projection forms an annular chamber within the throughbore extending radially outward from the central axis. In addition, the joint includes an annular seal member positioned within the annular chamber, and a second tube including an end and a radially outer surface. The end of the second tube is inserted into the throughbore of the first tube such that the annular seal member is engaged with the radially outer surface of the second tube and the second tube axially overlaps with the first tube in a region between the end of the second tube and the annular projection of the first tube along the central axis. Still further, the joint includes one or more crimps positioned within the region.
F16L 13/14 - Raccords de tuyaux non démontables, p. ex. raccords soudés, collés ou matés réalisés par déformation plastique du matériau du tuyau, p. ex. par déformation des brides, par laminage
F16L 13/16 - Raccords de tuyaux non démontables, p. ex. raccords soudés, collés ou matés réalisés par déformation plastique du matériau du tuyau, p. ex. par déformation des brides, par laminage le raccord consistant en des extrémités se superposant et munies de collets en prise les uns avec les autres
12.
REFRIGERANT RECOVERY SYSTEM AND RECOVERY CART THEREOF
A refrigerant recovery system includes a refrigerant circuit with a vacuum pump, a first connection port, a second connection port, an exhaust port, and multiple-way valves that selectively fluidly connect said ports to the vacuum pump. The multiple-way valves have a first configuration, a second configuration, and a third configuration for fluidly connecting the ports to a suction inlet and a discharge outlet of the vacuum pump. A method is for recovering refrigerant from a refrigerant circuit using a refrigerant recovery system. The method includes operating the refrigerant recovery system in a liquid recovery configuration to transfer liquid refrigerant in an refrigerant circuit into one or more recovery cylinders and operating the refrigerant recovery system in a gas recovery configuration to transfer gaseous refrigerant in the refrigerant circuit into the one or more recovery cylinders. A recovery cart includes a transfer circuit of a refrigerant recovery system.
A method is for operating an expansion valve in a refrigerant circuit that includes a compressor, a condenser, the expansion valve, an evaporator, and a working fluid. The method includes determining a modified subcooling value based on a condenser working fluid discharge temperature, a condenser discharge subcooling setpoint, and one or more of a compressor discharge temperature and an evaporator approach temperature. The method also includes adjusting the expansion valve according to the modified subcooling value. A refrigerant circuit for a heating, ventilation, air conditioning, and refrigeration system includes a controller configured to operate the expansion valve according to a modified subcooling value.
A method is directed to controlling superheat in a refrigerant circuit containing working fluid. The method includes directing a suction stream of the working fluid from the evaporator through the suction heat exchanger and directing the working fluid compressed by the compressor to the suction heat exchanger. The method also includes controlling a flowrate of the compressed working fluid through the suction heat exchanger. The controlling includes modulating a working fluid control valve based on a determined target saturation temperature for the compressed working fluid. A refrigerant circuit includes a main flow path, a bypass flow path, a working fluid control valve, and a controller for the refrigerant circuit. The controller configured to determine a target saturation temperature for the working fluid flowing through the suction heat exchanger in the bypass flow path, and modulate the working fluid control valve based on the target saturation temperature.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Wang, Wuchao
Yu, Xiaorui
Zhao, Qingxuan
Abrégé
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a suction adjust valve fluidly connecting an outlet of the evaporator to a suction port of the compressor. The suction adjust valve is to control a refrigerant flow from the outlet of the evaporator to the suction port of the compressor, and control a refrigerant pressure drop based on a result of monitoring at least one of (i) a refrigerant pressure difference at the expansion device and (ii) a refrigerant superheat downstream of the suction adjust valve.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Wan, Wang Shu
Sun, Ning
Wang, Min
Abrégé
An HVACR unit is disclosed. The HVACR unit includes a circuit having a compressor, a first heat exchanger, a second heat exchanger, and an expander. A heat exchanger assembly includes a fan and one of the first heat exchanger and the second heat exchanger, the fan being configured to draw air through the heat exchanger assembly for exchanging thermal energy with a working fluid in the circuit. The frame includes a unit support disposed on a base, the unit support being configured to laterally support the heat exchanger assembly, and the base being configured to vertically support the heat exchanger assembly. A forklift receptacle disposed in the HVACR unit, including one or more channels configured to respectively receive one or more tines of a forklift. The forklift receptacle is overlapped, in a longitudinal direction of the HVACR unit, with a center of mass of the HVACR unit.
A piping package is provided for connecting a heating, ventilation, air conditioning, and refrigeration (HVACR) system to a building variable air volume (VAV) system. The piping package includes an enclosure containing a supply pipe and a return pipe. Each of the supply pipe and the return pipe include an air vent and a blow-down valve. The piping package can be configured such that it is flip-able and can be positioned on either side of a main unit of the HVACR system. The piping package can further include a heat exchanger configured to exchange heat between the HVACR system and the process fluid distributed to the building VAV system.
A receiver assembly for a heat pump system is provided including a first receiver volume and a second receiver volume. The first receiver volume is configured to accommodate an amount of refrigerant based on a difference between a refrigerant charge for cooling operations of the heat pump system and a refrigerant charge for heating operations of the heat pump system. The second receiver volume has a first fluid connection configured to receive a hot gas injection and a second fluid connection. An expander is disposed along the second fluid connection. The receiver assembly further includes a fluid line configured to connect the first receiver volume and the second receiver volume and a controllable valve configured to regulate flow between the first receiver volume and the second receiver volume disposed along the fluid line.
Trane Air Conditioning Systems (China) Co. Ltd. (Chine)
Inventeur(s)
Shi, Ying
Stewart, Jeffrey L.
Abrégé
Examples of the present disclosure relate to systems and methods for incorporating an auxiliary heat exchanger into a refrigerant fluid circuit of a side-discharge outdoor unit of a climate control system, and operating the climate control system in combination with the auxiliary heat exchanger. The auxiliary heat exchanger may be configured to reduce refrigerant fluid temperatures at points in the refrigerant fluid circuit before reaching a primary outdoor heat exchanger of the outdoor unit. In general, available space along the top portion of an outdoor side-discharge unit may be utilized to house the auxiliary heat exchanger. In some examples, a bypass valve may be provided to include or exclude the auxiliary heat exchanger from the refrigerant fluid circuit during operation of the climate control system in various modes.
Examples of the present disclosure relate to systems and methods for monitoring the conditions that contribute to condensate formation along exterior surfaces of climate control systems and components thereof located in humid unconditioned spaces. Examples also relate to determining a likelihood of condensate formation and then providing measures to reduce or prevent condensate formation in the humid unconditioned space. Some examples for determining the conditions include utilizing temperature and humidity sensors with the climate control system and components thereof located in the humid unconditioned space. Some examples include monitoring conditions of the humid unconditioned space with sensors and then estimating conditions along the exterior component surfaces using calculations. Based on the conditions of the climate control system and of the unconditioned space the climate control system may operate with adjusted minimum settings to reduce the likelihood of condensate formation.
F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
F24F 11/65 - Traitement électronique pour la sélection d'un mode de fonctionnement
F24F 11/86 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
21.
Systems and methods for detecting air filter fouling in a climate control system
Methods and related systems for operating a climate control system for an indoor space are disclosed. In an embodiment, the method includes increasing a speed of a fan of the climate control system, and determining a first fitted external static pressure (ESP) function from a first plurality of airflow values and a first plurality of ESP values. Additionally, the method includes obtaining a baseline ESP from the first fitted ESP function, and determining a second fitted ESP function from a second plurality of airflow values and a second plurality of ESP values collected at least one week after the first plurality of airflow values and the first plurality of ESP values are collected. Further, the method includes comparing the first calculated ESP obtained from the second fitted ESP function to the baseline ESP to determine a condition of an air filter of the climate control system.
F24F 11/39 - Surveillance de la performance des filtres
F24F 11/74 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air
A scroll compressor includes a compressor housing containing an orbiting scroll member, a non-orbiting scroll member, a pair of bands disposed between the non-orbiting scroll member and the compressor housing, a suction chamber, a discharge chamber, and an intermediate injection chamber defined by the pair of bands. The non-orbiting scroll member includes an intermediate injection port fluidly connecting the intermediate injection chamber to at least one compression pocket formed by the intermeshed scroll members. A heating, ventilation, air conditioning, and refrigeration system including a refrigerant circuit with a condenser, at least one expander, an evaporator, and the scroll compressor fluidly connected. A method of making a scroll compressor includes placing an upper portion of a compressor housing over a non-orbiting scroll member with bands disposed therebetween, and interference fitting the upper portion onto the non-orbiting scroll member via the bands.
F04C 2/02 - Machines ou pompes à piston rotatif du type à engrènement, c.-à-d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
A scroll compressor includes a compressor housing containing an orbiting scroll member, a non-orbiting scroll member, bands disposed between the non-orbiting scroll member and the compressor housing, a suction chamber, a discharge chamber, and one or more intermediate injection chamber defined by the bands. The non-orbiting scroll member includes one or more intermediate injection ports fluidly connecting the one or more intermediate injection chambers to at least one compression pocket formed by the intermeshed scroll members. A heating, ventilation, air conditioning, and refrigeration system includes a refrigerant circuit with a condenser, an expander, an evaporator, and the scroll compressor fluidly connected. A method of making a scroll compressor includes placing an upper portion of a compressor housing over a non-orbiting scroll member with bands disposed therebetween, and interference fitting the upper portion onto the non-orbiting scroll member via the bands.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c.-à-d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/00 - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
Methods, systems and apparatuses are described that are directed to on-site recovery and/or repurposing of refrigerant, where an original refrigerant is converted into a refrigerant different from the original refrigerant. The refrigerant different from the original refrigerant can have relatively lower global warming potential (GWP) than the original refrigerant. The recovery and/or repurposing can be implemented for example in a refrigeration circuit, such as for example in general cooling and/or heating applications, which may be embodied in a heating, venting, and air conditioning (HVAC) system and/or unit, in a transport refrigeration system and/or unit, as well as in commercial, residential and/or industrial cooling and/or heating applications.
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur
F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène
25.
Systems and methods for diagnosing a loss of capacity of a climate control system
Methods and related systems for diagnosing a loss of capacity of a heating, ventilation, and air conditioning (HVAC) system are disclosed. In an embodiment, the method includes summing a runtime of an auxiliary heat source of the HVAC system over a plurality of time blocks. Additionally, the method includes summing an expected runtime of the auxiliary heat source over the plurality of time blocks. Further, the method includes comparing the runtime sum with the expected runtime sum, wherein the expected runtime for each of the plurality of time blocks is a function of an outdoor ambient temperature over a time-delay block beginning before the corresponding time block.
Methods and related systems for operating a climate control system for an indoor space are disclosed. In an embodiment, the method includes operating an indoor fan of the climate control system to rotate an impeller of the indoor fan in a reverse rotational direction opposite a nominal rotational direction of the impeller. Additionally, the method includes determining an airflow of the indoor fan when the impeller of the indoor fan is rotated in the reverse rotational direction. Further, the method includes determining a duct leakage rate associated with at least one duct of the climate control system based on the determined airflow, wherein the at least one duct is sealed-off at an end thereof.
G01M 3/28 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p. ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour tuyaux, câbles ou tubesExamen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p. ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour raccords ou joints d'étanchéité de tuyauxExamen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p. ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour soupapes
F24F 11/32 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques
27.
LAYERED CONTROL PANEL DESIGN TO PROVIDE SEPARATION OF HIGH/LOW VOLTAGE
A layered control panel for a heating, ventilation, air conditioning, and refrigeration (HVACR) unit includes an outer layer on which low-voltage components are placed, and an inner layer on which high-voltage components are placed. The outer layer is capable of taking a closed position where it blocks access to the inner layer, and an open position where the outer layer does not block access to the inner layer. The outer layer can include a lock to keep the outer layer in the closed position. The outer layer can be one or two or more panels mounted on hinges that allow the outer layer to swing between closed and open positions.
An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.
A compressor for a heat transfer circuit includes a variable frequency drive (VFD), an electric motor that rotates a driveshaft, bearing(s) for supporting the driveshaft, a backup gas supply, and a power supply. During a utility power interruption, the backup gas supply operates utilizing DC electrical power generated by a back electromotive force of the electric motor. A method of operating an electric power supply system for a compressor includes operating in a utility power mode and operating in a backup power mode during a utility power interruption. In the utility power mode, AC electrical power is supplied from the VFD to the motor. In the backup power mode, DC electrical power generated in the VFD by a back electromotive force of the motor it used to operate a backup gas supply to supply compressed working fluid to gas bearing(s) of the compressor.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
04 - Huiles et graisses industrielles; lubrifiants; combustibles
07 - Machines et machines-outils
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
36 - Services financiers, assurances et affaires immobilières
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
41 - Éducation, divertissements, activités sportives et culturelles
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Refrigerant; cleaning chemicals. Oils and lubricants. Compressors, electric motors for machines, and engines; generators, standby generators; and parts of the foregoing. Thermostats and controls; moitors; sensors; smart thermostats; building automation systems; software; software for managing HVAC and building automation systems; climate control systems; batteries; and parts of the foregoing; Photovoltaic solar panels for the production of electricity. Heating and cooling apparatus; air conditioners; heat pumps; heat exchangers; furnaces; air handlers; climate control systems; packaged heating and cooling systems; Chillers; rooftop units; variable refrigerant flow systems; Air purifiers; ventilators; humidifiers; dehumidifiers; water heaters; refrigeration units; lighting equipment; and parts of the foregoing. Financing services for heating, ventilating, and air conditioning systems; arranging of rebates and incentives for energy-efficient HVAC systems. Installation, maintenance, and repair of heating, ventilating, air conditioning, lighting, and building automation systems; HVAC system inspections; HVAC system cleaning; HVAC system tune-ups. Rental of heating, ventilating, and air conditioning apparatus; rental of chillers; rental of air handlers; provision of temporary HVAC equipment for events. Training services for technicians in the field of HVAC systems; providing online information and resources for the maintenance and repair of HVAC systems. Design and development of HVAC systems; energy efficiency consulting services; integration of building automation systems; online non-downloadable software for managing HVAC and building automation systems; Design of solar photovoltaic systems; and Technical planning of photovoltaic/solar thermal hybrid installations.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
04 - Huiles et graisses industrielles; lubrifiants; combustibles
07 - Machines et machines-outils
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
36 - Services financiers, assurances et affaires immobilières
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
41 - Éducation, divertissements, activités sportives et culturelles
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Refrigerant; cleaning chemicals. Oils and lubricants. Compressors, electric motors for machines, and engines; generators, standby generators; and parts of the foregoing. Thermostats and controls; monitors; sensors; smart thermostats; building automation systems; software; software for managing HVAC and building automation systems; climate control systems; batteries; and parts of the foregoing; Photovoltaic solar panels for the production of electricity. Heating and cooling apparatus; air conditioners; heat pumps; heat exchangers; furnaces; air handlers; climate control systems; packaged heating and cooling systems; Chillers; rooftop units; variable refrigerant flow systems; Air purifiers; ventilators; humidifiers; dehumidifiers; water heaters; refrigeration units; lighting equipment; and parts of the foregoing. Financing services for heating, ventilating, and air conditioning systems; arranging of rebates and incentives for energy-efficient HVAC systems. Installation, maintenance, and repair of heating, ventilating, air conditioning, lighting, and building automation systems; HVAC system inspections; HVAC system cleaning; HVAC system tune-ups. Rental of heating, ventilating, and air conditioning apparatus; rental of chillers; rental of air handlers; provision of temporary HVAC equipment for events. Training services for technicians in the field of HVAC systems; providing online information and resources for the maintenance and repair of HVAC systems. Design and development of HVAC systems; energy efficiency consulting services; integration of building automation systems; online non-downloadable software for managing HVAC and building automation systems; Design of solar photovoltaic systems; and Technical planning of photovoltaic/solar thermal hybrid installations.
An air handling unit (AHU) for a heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a housing and a combustion heater disposed within the housing. The housing includes a combustion section with a first channel and a second channel. The combustion heater includes heat exchanger tubes and a tube support that supports heat exchanger tubes within the combustion section. The tube support slidably disposed in the first channel and the second channel. The combustion heater configured to be slidably removable from the AHU. An AHU for an HVACR system includes a housing with a fan section and a fan assembly disposed within the housing. The fan assembly including a pair of grooves slidably disposed on a pair of rails of the housing. The fan assembly configured to be both slidably removable from the AHU and liftably removable from the AHU.
F24H 3/08 - Appareils de chauffage d'air à circulation forcée l'air étant maintenu séparé de l'agent chauffant, p. ex. par circulation forcée de l'air sur des radiateurs par tubes
F23D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
F24H 9/06 - Disposition des fixations ou des supports
F24H 9/1854 - Disposition ou montage des grilles ou des éléments chauffants pour appareils de chauffage d’air
33.
PRIORITIZNG EFFICIENT OPERATION OVER SATISFYING AN OPERATIONAL DEMAND
Architectures or techniques are presented that can prioritize operating a consumption device in a manner that is efficient in terms of consumption of a resource over satisfying a specified demand assigned to the consumption device. This re-prioritizing can be performed in response to a price of the resource exceeding a threshold.
Methods and related systems of detecting a temperature deviation in a heat exchanger coil of a climate control system are disclosed. In an embodiment, the method includes determining an enthalpy of the indoor space. In addition, the method includes detecting a coil temperature of the heat exchanger. Further, the method includes detecting a coil temperature deviation based on the enthalpy and the detected coil temperature.
F24F 11/83 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur
A method provides reactive network security of a building automation system that includes a controller and a network of electronic devices connected in electronic communication. The method includes monitoring, by the controller, external electronic communications received by the network. The monitoring includes comparing, by the controller, a traffic property of the external electronic communications to a corresponding baseline traffic property. The method also includes instituting a traffic communication protocol based on said comparison. Said instituting of the traffic communication protocol causes one or more of restricting of type of incoming external electronic communication to the network, using a virtual private network to communicate within the network, and encrypting of the electronic communication within the network. A building automation system includes a controller, a plurality of electronic devices, and a network. The plurality of electronic devices and the controller are in electronic communication via the network.
An apparatus and method for controlling the conditioning mode of a climate control device, such as a rooftop unit, that is servicing multiple connected terminal unit. The improved process may include determining a conditioning mode error for the connected terminal units. The conditioning mode error may be an integrated error value that is based on a temperature deviation integrated over the duration of the temperature deviation. The process may also determine a cooling mode error and a heating mode error. The cooling mode error and the heating mode error may be based on the conditioning mode error for the terminal units associated with cooling conditions and heating conditions, respectively. The process may further compare the cooling mode error and the heating mode error, and it may also adjust the conditioning mode of the climate control device based on the comparison.
F24F 11/67 - Basculement entre les modes de chauffage et de refroidissement
F24F 11/32 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques
F24F 11/523 - Aménagements pour l’indication, p. ex. écrans pour l’affichage de la température
F24F 11/64 - Traitement électronique utilisant des données mémorisées au préalable
F24F 11/83 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur
37.
Compressor lubrication supply system and compressor thereof
A lubricant supply system is for a compressor that compresses a first working fluid in a heat transfer circuit. The lubricant supply system includes a lubricant tank, a lubricant pathway for supplying lubricant from the lubricant tank to one or more bearings of the compressor, and a lubricant refrigeration system with a lubricant heater and a lubricant cooler. The lubricant heater configured to heat the lubricant discharged from the one or more bearings and the lubricant cooler configured to cool the lubricant flowing through the lubricant pathway. A method of lubricating a compressor includes heating the lubricant, directing the lubricant from a lubricant tank through a lubricant pathway to one or more bearings of the compressor, and cooling the lubricant passing through the lubricant pathway.
There is disclosed a reversible heat pump system 100 and a method of operating a reversible heat pump system to control the temperature of a process fluid of a chiller system 500. In a cooling mode, a working fluid is circulated for co-current flow with a process fluid at a heat exchanger 104 functioning as an evaporator heat exchanger, whereas in a heating mode, the working fluid is circulated for counter-current flow with the process fluid at the same heat exchanger 104 functioning as a condenser heat exchanger.
According to an embodiment of the present disclosure, an apparatus includes a transformer having a set of input terminals, a first set of output terminals, and a second set of output terminals. First and second rectifiers are coupled to the first and second sets of output terminals, respectively. The transformer is configured to transform three phase alternating current (AC) provided to the set of input terminals into first and second three phase AC outputs at the first and second sets of output terminals, respectively. The first three phase AC output is phase shifted from the second three phase AC output.
H02P 23/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur spécialement adaptés pour amortir les oscillations des moteurs, p. ex. pour la réduction du pompage
H02P 25/18 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de moteur ou par des détails de structure caractérisés par des dispositions de circuit ou par le type de câblage avec des dispositions pour la commutation des enroulements, p. ex. par des interrupteurs mécaniques ou des relais
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
An oil-free compressor includes a compressor housing with a suction inlet and a discharge outlet, a compression mechanism and a liquid-vapor separation volume disposed within the compressor housing, a crankshaft. The compression mechanism has an inlet fluidly connected to the suction inlet and a discharge volume fluidly connected to the discharge outlet. The crankshaft is engaged with the compression mechanism. The liquid-vapor separation volume is configured to separate a mixed phase of working fluid into liquid working fluid and gaseous working fluid. The liquid working fluid is supplied to the bearing. A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a refrigerant circuit with an oil-free compressor, a condenser, one or more expanders, and an evaporator.
F04C 29/00 - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c.-à-d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/02 - LubrificationSéparation du lubrifiant
F25B 1/04 - Machines, installations ou systèmes à compression à cycle irréversible à compresseur rotatif
41.
Devices, systems, and methods for reducing leakage current in power converters
Devices, systems, and methods are disclosed for reducing leakage current in power converters, such as for HVAC systems, to facilitate compatibility with GFCI devices. In various embodiments, the power converter may include components to filter and/or reduce common mode noise, such as by removing high frequency components of the common mode noise, while maintaining leakage current below a trip threshold of a GFCI device.
H02M 7/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p. ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
42.
TUNABLE ACOUSTIC METAMATERIALS FOR SOUND DAMPENING OF HVAC EQUIPMENT
Example embodiments of the present disclosure relate to improved sound attenuation configurations and methods of manufacturing the same. An example embodiment includes a low noise climate control device. This device may include a housing and a noise producing component within the housing. Further, the device may include an acoustic metamaterial stack arranged in the housing. The acoustic metamaterial stack may include a perforated layer arranged over a spacer layer, and the spacer layer arranged over another perforated layer. Each of the perforated layers may include a plurality of perforations creating a percentage of open area (POA). The perforated layers may further include set(s) of sheets that each including a plurality of openings. These set(s) of sheets may be arranged such that the plurality of openings in the sheets for each perforated layer are coordinate to create the plurality of perforations in each of the perforated layers.
F24F 13/24 - Moyens pour éviter ou supprimer le bruit
B32B 3/26 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes
B32B 3/30 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes caractérisés par une couche comportant des retraits ou des saillies, p. ex. des gorges, des nervures
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
Water-source heat pump systems include a solar heater to supplement heating operations and a radiative cooler such as one or more radiative cooling panels to allow the system to reject heat. The system can be controlled based on a target temperature, a current temperature, and temperatures at one or both of the solar heater and/or the radiative cooler, selecting a mechanical cooling mode, a hybrid cooling mode, a free cooling mode, a hybrid heating mode, or a free heating mode based on the temperatures.
Methods and systems for cooling conditioned spaces (e.g., data centers) are provided. The cooling system includes a radiative cooling component disposed outside of the housing and including a radiative cooling surface configured to provide radiative cooling directly or indirectly to the working fluid of the internal cooling component, and a thermally coupling component thermally connecting the internal cooling component to the radiative cooling component to transfer heat from the working fluid of the internal cooling component.
A method is provided for controlling an HVAC system. The method includes receiving zone priority levels and zone temperature setpoints, where at least one of the zones haves a higher priority level than others of the zones, receiving an indication of zone ambient temperature values, determining requested zone capacity values to maintain the zone ambient temperature values within a threshold deviation of respective ones of the zone temperature setpoints, determining target zone capacity values from the requested zone capacity values and zone size values, and from the zone priority levels where the target zone capacity values may be responsive to a total of the requested zone capacity values that is less than a minimum capacity or greater than a maximum capacity of the HVAC system, and causing the HVAC system to provide the conditioned air to the zones according to respective ones of the target zone capacity values.
F24F 11/74 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a compressor with a gas bearing supplied with compressed gas and a controller. The controller is configured to determine an inlet pressure and outlet pressure of the gas bearing, determine a maximum speed limit based on the inlet pressure and the outlet pressure, and prevent the compressor from operating at a speed that is greater than the maximum speed limit A method of controlling a compressor includes calculating a maximum speed limit based on an inlet pressure and an outlet pressure of the gas bearing. The method also includes in response to determining that a speed setting is greater than the maximum speed limit, adjusting operation of the compressor such that a speed of the compressor is at or below the maximum speed limit.
F04D 29/063 - Lubrification spécialement adaptée aux pompes pour fluides compressibles
F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges
F04D 29/42 - Carters d'enveloppeTubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
F04D 29/58 - RefroidissementChauffageRéduction du transfert de chaleur
F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
A method is provided for the controlled routing of hydronic flow within a climate control system. The method includes determining a condition type request for a plurality of area zones corresponding to a particular thermal zone. The method further includes determining a supply temperature type associated with at least a supply line of a primary supply loop and a supply line of a secondary supply loop. The supply temperature type is indicative of a thermal transport fluid temperature within the respective supply line. The method further includes providing an actuation signal set to a valve assembly. The actuation signal set is configured to describe a position for each value of the valve assembly and the position for each valve is based on the conditioning type request and the determined supply temperature types.
F24F 11/84 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de valves
A packaged heating and/or cooling unit for a production module for a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The packaged unit includes a heat pump configured to provide heating and/or cooling; a connection to a piping distribution system to selectively connect to a hot fluid circuit and/or a cold fluid circuit; and a controller. The controller is configured to connect to and receive a signal from a building automation system for a heating requirement or a cooling requirement, and further configured to selectively control connection to either the hot fluid circuit or the cold fluid circuit and independently control the packaged heating and/or cooling unit based on the signal from the building automation system for either the heating requirement or the cooling requirement.
Multiple air handling units feeding into a common air distribution system are used to provide both latent and sensible temperature control. When dehumidification without sensible cooling is required, different air handling units feeding into a common distribution system may be operated in different modes so that both cooling and reheating are occurring simultaneously. The result is an energy efficient means of controlling both ambient air temperature and relative humidity. Air handling units such as water source heat pumps and variable refrigerant flow (VRF) units may be employed.
A01G 9/24 - Dispositifs de chauffage, d'aération, de régulation de la température ou d'irrigation dans les serres, les châssis ou les installations similaires
52.
Scroll compressor with engineered shared communication port
An asymmetric scroll compressor includes a compressor housing. An orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member each includes a baseplate and a wrap extending from the baseplate. The orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets. A driveshaft affixed to the orbiting scroll member and configured to orbit the orbiting scroll member from a first orbital position to a second orbital position. A communication port disposed on the baseplate of one of the orbiting scroll member and the non-orbiting scroll such that: in the first orbital position, the communication port communicates with a first enclosed pocket of the plurality of compression pockets, and in the second orbital position, the communication port communicates with a second enclosed pocket of the plurality of compression pockets.
F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p. ex. caractéristiques de structure de l'admission ou de l'échappement
F01C 1/02 - "Machines" ou machines motrices à piston rotatif du type à engrènement, c.-à-d. avec mouvement de translation circulaire des organes coopérants, tous les organes ayant le même nombre de dents ou de parties équivalentes de prise
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c.-à-d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 23/00 - Combinaisons de plusieurs pompes, chacune étant du type à piston rotatif ou oscillant spécialement adaptées pour les fluides compressiblesInstallations de pompage spécialement adaptées pour les fluides compressiblesPompes multiétagées spécialement adaptées pour les fluides compressibles
HVAC components having improved efficiency are described. In one embodiment, excessive sleep current draw in a battery-powered device having a microcontroller is detected by measuring a voltage drop across a MOSFET device coupled in a forward-conducting orientation in series between the battery and the microcontroller, causing a transistor to conduct when the voltage drop exceeds a predetermined threshold to generate a first trigger signal, integrating the first trigger signal to generate a second trigger signal, and generating an interrupt to the microcontroller. In another embodiment, a battery-saving method of operating an HVAC component includes maintaining the HVAC device in the sleep mode, receiving a user input to wake the device, transmitting a data request and returning the HVAC component to the sleep mode, waking up the HVAC device to poll an adjacent network node storing a cached response, displaying the response, and returning the HVAC device to sleep.
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
G05B 15/02 - Systèmes commandés par un calculateur électriques
G06F 1/3206 - Surveillance d’événements, de dispositifs ou de paramètres initiant un changement de mode d’alimentation
G06F 1/3209 - Surveillance d’une activité à distance, p. ex. au travers de lignes téléphoniques ou de connexions réseau
H02H 1/00 - Détails de circuits de protection de sécurité
H02H 3/20 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un excès de tension
H02H 3/38 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à la fois à la tension et au courantCircuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à l'angle de déphasage entre tension et courant
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
H04W 84/18 - Réseaux auto-organisés, p. ex. réseaux ad hoc ou réseaux de détection
54.
Failure detection and compensation in heating, ventilation and air conditioning (HVAC) equipment
An apparatus for controlling heating, ventilation and air conditioning (HVAC) equipment includes: a memory configured to store computer-readable program code; and processing circuitry configured to access the memory to execute the computer-readable program code, where executing the computer-readable code causes the processing circuitry to detect that a first HVAC unit has failed to control a first environmental condition of a first confined area serviced by the first HVAC unit to meet a first predetermined setpoint for the first confined area and to draw second conditioned air from a second confined area into the first confined area until the first environmental condition meets the first predetermined setpoint by controlling the first HVAC unit to cause the first HVAC unit to reduce air pressure in the first confined area.
F24F 11/74 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air
F24F 11/32 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques
The technologies described and recited herein pertain to a permanent magnet motor having multiple voltage taps so that the motor may run in multiple configurations, e.g., a low-range and a high-range, and have multiple optimal operating points.
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
F24F 11/86 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
H02P 13/06 - Dispositions de commande de transformateurs, réactances ou bobines d'arrêt de façon à obtenir les caractéristiques désirées à la sortie par changement de prisesDispositions de commande de transformateurs, réactances ou bobines d'arrêt de façon à obtenir les caractéristiques désirées à la sortie par modification des connexions des enroulements
H02P 25/18 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de moteur ou par des détails de structure caractérisés par des dispositions de circuit ou par le type de câblage avec des dispositions pour la commutation des enroulements, p. ex. par des interrupteurs mécaniques ou des relais
A refrigerant composition includes R1225ye(E) refrigerant, a second refrigerant that is one of R1234ze(E) refrigerant and R32 refrigerant, and a third refrigerant that is one of R227ea refrigerant, R125 refrigerant, and R1234yf refrigerant. The refrigerant composition has a GWP of at or less than about 2000. A method of making a refrigerant composition includes mixing at least an amount of R1225ye(E) refrigerant, an amount of a second refrigerant, and an amount of a third refrigerant to obtain a refrigerant composition that has a GWP of at or about or less than 2000. A method of retrofitting a refrigerant composition in an HVACR system includes adding an amount of at least one refrigerant to a refrigerant composition to produce a retrofit refrigerant composition that includes R1225ye(E) refrigerant, a second refrigerant, and a third refrigerant.
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
A dehumidifying air handling unit for a heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a housing, a hollow desiccant drum configured to rotate within the housing, and a heat exchanger disposed within the hollow desiccant drum. The hollow desiccant drum includes channels that extend through a sidewall that surrounds an interior space. A desiccant is provided in the channels. The heat exchanger is configured to cool air flowing through the interior space of the hollow desiccant drum. A method of conditioning air includes rotating a hollow desiccant drum within a housing and directing the air to pass through the hollow desiccant drum. The air passing through the hollow desiccant drum includes cooling, with the heat exchanger, the air in an interior space of the hollow desiccant drum, and adsorbing, with a desiccant, moisture from the air cooled by the heat exchanger
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
A method is described for operating a refrigerant circuit that includes a compressor with a driveshaft and one or more gas bearings for supporting the driveshaft. The method includes operating the refrigerant circuit in a first mode which includes supplying gaseous working fluid compressed by the compressor to the one or more gas bearings of the compressor, and the one or more gas bearings using the compressed gaseous working fluid to support the driveshaft. The method includes operating the refrigerant circuit in a second mode which includes supplying liquid working fluid to the one or more gas bearings of the compressor, and the one or more gas bearings using the liquid working fluid to support the driveshaft. A refrigerant circuit includes a compressor, a condenser, an expander, an evaporator, and a controller configured to selectively operate the refrigerant circuit in a least a first mode and a second mode.
Devices, systems, and methods are disclosed for reducing leakage current in compressors, such as for HVAC systems. Several embodiments include a leakage current suppressor configured to reduce passage of electrical current into the housing of a compressor via a conductive pathway between an electrical conductor and the housing. For instance, the leakage current suppressor may sufficiently reduce the passage of electrical current into the housing of a compressor to prevent tripping a GFCI. In many embodiments, the conductive pathway may be formed, at least in part, by a liquid refrigerant in the compressor housing.
H02H 3/16 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un courant de défaut à la terre ou à la masse
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Chen, Xuefeng
Wang, Bang Yu
Wang, Qing Hao
Cao, De Bin
Abrégé
A centrifugal fan for a heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The centrifugal fan includes a volute housing having an inner surface and a curved inlet shroud. The volute housing defines an air outlet. The curved inlet shroud defines an air inlet. The air inlet has an inlet airflow cross-sectional area that lies substantially perpendicular to an outlet airflow cross-sectional area of the air outlet. The centrifugal fan also includes an impeller mounted for rotation about a rotational axis within the volute housing. The impeller has a plurality of fan blades. The plurality of fan blades has an outer surface. The centrifugal fan further includes a light source. The inner surface of the volute housing and the outer surface of the plurality of fan blades includes a photocatalyst layer. The light source is configured to emit light on the photocatalyst layer.
F24F 8/22 - Traitement, p. ex. purification, de l'air fourni aux locaux de résidence ou de travail des êtres humains autrement que par chauffage, refroidissement, humidification ou séchage par stérilisation utilisant de la lumière ultraviolette
61.
TWO-STAGE COMPRESSOR HAVING VARIABLE SPEED FIRST STAGE
A compressor driven by a variable-frequency drive (VFD) is provided to supplement operation of another compressor of a heating, ventilation, air conditioning, and refrigeration (HVACR) system, such as heat pump operations at low ambient temperatures. The VFD is controlled to provide efficient pressure ratios for each compressor of the HVACR system when the compressor driven by the VFD is used to supplement the other compressor. The compressor driven by the VFD can be included as a built-in compressor of the HVACR system or added subsequently as part of a booster package.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
An HVACR system, a direct expansion evaporator, and a direct expansion heat exchanger tube arranged to evaporate a working fluid inside the tube are disclosed. The tube includes an exterior surface of the tube opposing an inner surface of the tube, and a cavity layer on the inner surface configured to evaporate the working fluid flowing in a first flow path arranged to direct the first fluid to flow through the tube and contact the cavity layer on the inner surface. A second flow path, separate from the first flow path, is arranged to direct a second fluid across the tube and to contact the extended member on the exterior surface of the tube such that the first fluid exchanges thermal energy with the second fluid.
F28F 1/36 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant obliquement les moyens étant des ailettes enroulées en hélice ou des spirales de fils
F28F 13/18 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application de revêtements, p. ex. absorbant les radiations ou les réfléchissantDispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application d'un traitement de surface, p. ex. un polissage
63.
Control process for climate control system based on outdoor humidity conditions
Examples of the present disclosure relate to climate control systems and outdoor units that use humidity measurements associated with the outdoor environment to improve the operation of one or more components. In some examples, an outdoor unit of a climate control system includes a housing, a compressor located within the housing that circulate a refrigerant fluid, and a humidity sensor that detects a humidity condition of an outdoor environment. The outdoor unit may further include control circuitry that controls the compressor by establishing a target parameter, where the target parameter is associated with a property of a refrigerant fluid. The control circuitry may further receive measurements associated with the humidity condition of the outdoor environment, adjust the target parameter based on the measurement, monitor the property of the refrigerant fluid, compare the monitored property to the adjusted target parameter, and adjust operation of the compressor based on the comparison.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F24F 1/06 - Éléments extérieurs séparés, p. ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur
Methods and systems described perform air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system by detecting a concentration of airborne contaminants in a space serviced by the HVACR system. The detected concentration of airborne contaminants is determined whether it exceeds a threshold relative to a capacity of a first air cleaner. When the detected concentration of airborne contaminants exceeds the threshold, a second air cleaner is selected and enabled to be activated in the space. When the detected concentration of airborne contaminants does not exceed the threshold, the first air cleaner is selected and enabled to be activated in the space. The first air cleaner has a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, treats the space at a lower concentration of airborne contaminants. The second air cleaner includes specifically designed cleaner modules.
B01D 53/34 - Épuration chimique ou biologique des gaz résiduaires
F24F 8/24 - Traitement, p. ex. purification, de l'air fourni aux locaux de résidence ou de travail des êtres humains autrement que par chauffage, refroidissement, humidification ou séchage par stérilisation utilisant des médiums stérilisants
A61L 9/04 - Désinfection, stérilisation ou désodorisation de l'air utilisant des substances gazeuses ou à l'état de vapeur, p. ex. de l'ozone utilisant des substances évaporées dans l'air sans chauffage
A system and method are each directed to generating a biogas including methane by bacterial digestion of waste materials under anaerobic conditions. The waste digestion system includes three processing stages and a biogas production unit. The waste material is provided in the form of a water based slurry including solid particles having a distribution of particle sizes. The three processing stages are configured to remove and/or process the solid particles in the slurry, such that the biogas production unit receives a feedstock enriched in solid particles having a particle size suited for efficient digestion. The method generally includes processing the waste material in the three processing stages, digesting the waste material under anaerobic conditions, thereby generating the biogas.
Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.
H02K 1/278 - Aimants montés en surfaceAimants sertis
H02K 11/01 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour le blindage contre les champs électromagnétiques
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
Example embodiments of the present disclosure relate to a sealing apparatus including a gasket for use in connecting HVAC fluid conduits. In one embodiment, the gasket includes a tubular body, a rim extending outwardly from an end of the tubular body, and two or more ears extending from the rim. The tubular body may be configured to engage a fluid conduit. Each of the ears may be spaced apart from the tubular body and extend in substantially the same direction as the tubular body. Each of the ears may further include an inner surface for engaging with a fluid conduit and an outer surface for engaging with a pipe clamp. The ears may further include a rib located proximate a distal end of the ear.
F24D 19/10 - Aménagements ou montage des dispositifs de commande ou de sécurité
F24H 3/06 - Appareils de chauffage d'air à circulation forcée l'air étant maintenu séparé de l'agent chauffant, p. ex. par circulation forcée de l'air sur des radiateurs
68.
SUCTION GAS HEAT EXCHANGER CONTROL AND UTILIZATION
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a suction heat exchanger configured to add heat to working fluid prior to entering the compressor, so as to support the generation of superheat by the HVACR system. The superheat can be controlled to achieve desired levels, so as to support the separation of lubricant from working fluid of the HVACR system. The suction heat exchanger can heat the working fluid passing to the suction of the compressor by exchanging heat with working fluid sourced from between the lubricant separator and the condenser. The suction heat exchanger can further be used as a receiver for controlling the charge of working fluid circulating in the HVACR system.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur pour la séparation des lubrifiants du frigorigène
A method is provided for controlling a heating, ventilation, and air conditioning (HVAC) system. The method includes measuring a temperature and controlling a compressor of the HVAC system. The temperature is measured by a temperature sensor located between a metering device of the HVAC system and an evaporator coil of the HVAC system. The temperature is representative of a refrigerant temperature. The refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil. The compressor is controlled by control circuitry that is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through an evaporator coil and a reheat coil, where the value is determined using the temperature.
F24F 11/86 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
F24F 3/153 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification avec chauffage subséquent, c.-à-d. dans lesquels l'air, porté au degré d'humidité voulu dans la centrale, traverse un élément de chauffage pour atteindre la température désirée
F24F 11/77 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air en commandant la vitesse de rotation des ventilateurs
A method is provided for controlling a heating, ventilation, and air conditioning (HVAC) system. The method includes measuring a temperature and controlling a compressor of the HVAC system. The temperature is measured by a temperature sensor located between a metering device of the HVAC system and an evaporator coil of the HVAC system. The temperature is representative of a refrigerant temperature. The refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil. The compressor is controlled by control circuitry that is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through an evaporator coil and a reheat coil, where the value is determined using the temperature.
A transport refrigeration system (TRS) for an enclosed space of a transport unit that includes a ventilation pathway to direct air to flow from the enclosed space. The TRS includes a refrigerant circuit with an evaporator configured to cool the air, and a CO2 scrubber. The CO2 scrubber includes a metal organic framework (MOF) configured to adsorb CO2 from the air in an adsorption mode and is regenerated with ambient air in a regeneration mode. A transport unit includes an enclosed space for storing produce, a ventilation pathway, and a TRS. A method of conditioning an enclosed space of a transport unit includes operating a TRS in a first mode that cools air from the enclosed space and adsorbs, with a MOF in a CO2 scrubber, CO2 from the air, and operating the TRS in a second mode that regenerates the MOF with ambient air.
B63J 2/08 - VentilationConditionnement d'air des cales
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
An apparatus and method for reducing motor magnetic losses via reduction of temporal harmonics by control of a direct current (DC) link voltage. In one embodiment, the apparatus includes an inverter for converting DC power into alternating current (AC) power for an electric motor. The apparatus also includes a voltage source, which may take form in a rectifier that is configured to provide the DC output voltage to the inverter via a DC link. The voltage source is configured to adjust a magnitude of the DC output voltage based on a rotational speed of the electric motor. The voltage source may also adjust the magnitude of the DC output voltage based on a power output of the inverter.
H02P 27/08 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
H02M 5/458 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02P 23/14 - Estimation ou adaptation des paramètres des moteurs, p. ex. constante de temps du rotor, flux, vitesse, courant ou tension
73.
Climate control system with improved leak detector
Examples of the present disclosure relate to climate control systems and air handler units with improved leak detection, along with method for installing these systems. In some examples, the climate control system comprises a heat exchanger configured to exchange thermal energy between a conditioned airflow and a refrigerant fluid; a drain pan arranged to collect condensate produced at the heat exchanger, the drain pan including one or more drains configured to route condensate out of the drain pan; a refrigerant leak sensor coupled to the drain pan and positioned above the one or more drains and configured to detect a refrigerant leak; and control circuitry operably coupled to the refrigerant leak sensor, the control circuitry configured to: receive a signal from the refrigerant leak sensor indicative of refrigerant located outside the closed circuit associated with the heat exchanger, and determine a refrigerant leak has occurred based on the signal.
F24F 11/36 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques aux fuites de fluides échangeurs de chaleur
F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p. ex. préchauffage ou refroidissement préliminaire
F24F 11/89 - Aménagements ou montage des dispositifs de commande ou de sécurité
F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
Example embodiments of the present disclosure relate to improved HVAC devices and kits for HVAC devices that improve the sound attenuation associated with the device, particularly low-frequency noise. An example embodiment includes an improved furnace including a housing with a combustion air chamber, a heat exchanger chamber, and a circulation blower chamber, wherein the combustion air chamber comprises a burner assembly and a combustion air fan, the furnace also includes a sound attenuation layer including a first acoustic metamaterial layer coupled to the combustion air chamber and tuned to attenuate sound for a first frequency band, one or more housing openings fluidly connecting the combustion air chamber to an environment outside the housing, wherein the sound attenuation layer includes a discontinuous section that aligns with one or more of the housing openings.
Example furnaces and methods related thereto include a burner box including at least one burner configured to combust a fuel/air mixture. In addition, the furnace includes a first blower including an inlet nozzle having an air inlet and fuel inlet. The inlet nozzle is configured such that operation of the first blower is to pull air and fuel into the inlet nozzle to produce the fuel/air mixture at a fuel/air ratio that is configured to produce flue products having less than 14 Nano-grams per Joule of nitrogen oxides when combusted. Operation of the first blower is configured to push the fuel/air mixture into the burner box. Further, the furnace includes a heat exchanger assembly fluidly coupled to the burner box through a vestibule, and a second blower configured to pull the flue products through the heat exchanger assembly.
F23C 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
F24D 5/02 - Systèmes de chauffage central à air chaudSystèmes de chauffage central à gaz d'échappement fonctionnant avec émission d'air chaud dans l'espace ou le local à chauffer
F23L 17/00 - Génération du tirageMitrons de cheminées ou de conduits d'alimentation en airDébouchés de conduits de cheminées
F23D 14/04 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen
76.
METHODS AND SYSTEMS FOR PASSIVE COOLING AND SANITIZATION OF DEFINED SPACE
Methods and systems for passive cooling and sanitization are provided. The system includes a roof positioned to provide a shielding to the conditioned space underneath the roof, and a radiative film disposed on an upper surface of the roof and configured to provide radiative cooling to the conditioned space. In some cases, one or more platforms are positioned below the roof to define the conditioned space. A positioning mechanism is used to move at least one of the roof and the one or more platforms upward and downward between an open position and a closed position to adjust a height of the conditioned space.
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
A47F 3/06 - Vitrines ou meubles d'exposition à étagères mobiles ou amovibles
F25B 23/00 - Machines, installations ou systèmes ayant un seul principe de fonctionnement non compris dans les groupes , p. ex. utilisant l'effet de radiation sélective
F28F 13/18 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application de revêtements, p. ex. absorbant les radiations ou les réfléchissantDispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution par application d'un traitement de surface, p. ex. un polissage
Example embodiments of the present disclosure relate to a climate control system and methods for controlling the system. Some embodiments include a system that includes a refrigerant circuit with both a main circuit and a bypass circuit, where the main circuit directs the refrigerant fluid from a compressor to a first heat exchanger, a metering device, a second heat exchanger, and an accumulator, and the bypass circuit selectively directs a portion of the refrigerant fluid to a third heat exchanger. The bypass circuit includes a bypass control valve and a bypass metering device, the bypass control valve controlling the flow of the portion of the refrigerant fluid to be directed to the third heat exchanger, and the bypass metering device lowering the temperature of the portion of the refrigerant fluid before the portion of the refrigerant fluid enters the third heat exchanger. The third heat exchanger may be located proximate the accumulator.
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur
78.
Evaporator charge management and method for controlling the same
An evaporator includes a housing having a first end longitudinally opposing a second end. The evaporator includes an inlet disposed on the housing and configured to receive a fluid. The evaporator also includes a tube bundle disposed in the housing and configured to evaporate the fluid to provide a vapor stream arranged to exit through an outlet on the housing. Additionally, the evaporator has a flow balancer provided between the tube bundle and the outlet on the housing, and the flow balancer is configured to balance refrigerant quality between the first end and the second end of the evaporator by controlling the vapor stream.
Embodiments of systems and methods for power demand management are described herein. More specifically, embodiments comprise systems and methods for powering, controlling, and/or operating various types of controllable load for integration with power fluctuations from intermittent power generation plants, such as photovoltaic arrays and wind turbine farms.
G06F 1/3203 - Gestion de l’alimentation, c.-à-d. passage en mode d’économie d’énergie amorcé par événements
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
80.
Refrigerant compressor with wear sleeve and lubricant blends for handling debris-laden fluids
A compressor including a housing, a shaft configured to be rotated relative to the housing to compress a refrigerant, a motor configured to drive the shaft, a lubrication system configured to supply lubricant to the compressor, and a bearing configured to support the shaft. The shaft includes a wear-resistant sleeve-like treatment on at least a portion of an outer surface of the shaft adjacent the bearing. The lubricant is a lubricant blend composition that includes two or more lubricants, the two or more lubricants including a first lubricant and a second lubricant. The first lubricant is present at a higher volume percentage than the second lubricant, and the first lubricant includes a higher viscosity than the second lubricant.
C10M 107/24 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone contenant des monomères comportant un radical insaturé lié à un radical alcool, aldéhyde, cétone, éther, cétal ou acétal
C10M 111/04 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un mélange d'au moins deux composés couverts par plus d'un des groupes principaux , chacun de ces composés étant un composé essentiel l'un d'eux, au moins, étant un composé organique macromoléculaire
C10M 129/10 - Composés hydroxylés comportant des groupes hydroxyle liés à un atome de carbone d'un cycle aromatique à six chaînons
C10M 141/10 - Compositions lubrifiantes caractérisées en ce que l'additif est un mélange d'au moins deux composés couverts par plus d'un des groupes principaux , chacun de ces composés étant un composé essentiel l'un d'eux, au moins, étant un composé organique contenant du phosphore
C10M 169/04 - Mélanges de matériaux de base et d'additifs
A compressor including a housing, a shaft configured to be rotated relative to the housing to compress a refrigerant, a motor configured to drive the shaft, a lubrication system configured to supply lubricant to the compressor, and a bearing configured to support the shaft. The shaft includes a wear-resistant sleeve-like treatment on at least a portion of an outer surface of the shaft adjacent the bearing. The lubricant is POE oil or a lubricant blend composition that includes two or more lubricants, the two or more lubricants including a first lubricant and a second lubricant.
Multi-compressor chiller systems can be efficiently operated by determining real time efficiency curves for the compressors currently in operation, along with any compressors that may be added to address demand, and using these efficiency curves to determine changes to compressor operation to improve efficiency in meeting chiller demand. The efficiency curves can be parabolic curves. The data used to determine the efficiency curves can be obtained through operation at a variety of lift points and a variety of load points within those lift points. The efficiency curves can be solved to find intersections where there may be staging points for adding or subtracting compressors from operation to efficiently meet demand. This operation can be automated through a controller of a control system for the multi-compressor chiller system.
Re-calibrating a bearing system of a compressor includes analyzing environmental data pertaining to a compressor to detect occurrence of a calibration threshold event, and re-calibrating the bearing system based on the detected calibration threshold event by controlling placement of a shaft relative to the bearing system of the compressor.
A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has an majority absorption-desorption operating band of 25% relative humidity or less.
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
The AHU includes an air dehumidifying (AD) flow path, an air regeneration (AR) flow path, a first desiccant wheel and a second desiccant wheel each in the AD flow path and the AR flow path, a first cooler heat exchanger in the AD flow path, a second cooler in the AD flow path, and a heater disposed in the AR flow path. An HVACR system includes the AHU and a chiller configured to supply chiller liquid to the first cooler heat exchanger and the second cooler heat exchanger in the AHU. A method of conditioning air in an HVACR system includes directing air through the air dehumidifying (AD) flow path and directing air through an air regeneration (AR) flow path to regenerate the desiccant in a first desiccant wheel and the desiccant in a second desiccant wheel.
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
Disclosed are techniques relating to an improved air quality device that can provide personalized comfort and improved air quality elements to occupants of a common space. The improved air quality device can comprise a plurality of individually adjustable directional outlets. The state of these individually adjustable directional outlets can be updated to individually satisfy comfort levels of various occupants at different locations within the common space, which can be determined based on inputs from a control device (e.g., thermostat), a sensor (e.g., occupancy sensor), and so forth. The improved air quality device can further comprise an ultraviolet light device that can reduce pathogens in the common space. The state of the ultraviolet light device (e.g., on/off, duration of on/off, a position/location, and so on) can be a function of the state of the state of the outlets.
F24F 11/79 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande de la direction de l’air fourni
F24F 8/22 - Traitement, p. ex. purification, de l'air fourni aux locaux de résidence ou de travail des êtres humains autrement que par chauffage, refroidissement, humidification ou séchage par stérilisation utilisant de la lumière ultraviolette
F24F 11/00 - Aménagements de commande ou de sécurité
F24F 13/14 - Organes de réglage de l'écoulement d'air, p. ex. persiennes, grilles, volets ou plaques directrices mobiles, p. ex. registres à éléments basculants, p. ex. persiennes
A porous gas bearing is disclosed. The porous gas bearing includes a housing having a fluid inlet and an aperture. A porous surface layer is disposed within the housing surrounding the aperture in a circumferential direction. The porous surface layer is in fluid communication with the fluid inlet. A damping system includes a damping system including a biasing member, the biasing member being disposed in a passageway that extends along the longitudinal direction of the aperture and circumferentially about the aperture, wherein the biasing member is arranged radially outward from the porous surface layer.
F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
F16C 33/10 - Structures relatives à la lubrification
F16F 15/023 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides
F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
88.
Method and apparatus for maintaining software of a control unit for an industrial control system
The present disclosure provides a method and apparatus for maintaining computer software of a supervisory control unit (SCU) of an industrial control system (ICS) configured to control equipment of a facility. The method includes capturing status information for the SCU and equipment that indicates at least performance of the SCU and the equipment, and connectivity of the SCU with the equipment. The method includes patching the computer software automatically to update, change, fix, or improve the computer software. The method includes capturing corresponding status information for the SCU and equipment and performing an audit of the ICS after the patch in which the status information and the corresponding status information are compared to identify any deviations in the performance or the connectivity of the equipment resulting from the patch. The method includes generating an audit report of the ICS that indicates any of the deviations that satisfy a reporting threshold.
G05B 19/042 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
89.
Fluid control for a variable flow fluid circuit in an HVACR system
A method of controlling an HVACR unit in an HVACR system including an HVACR unit through which a process fluid is pumped to meet a temperature control demand includes monitoring, by a controller, a flowrate of the process fluid through the HVACR unit. When the flowrate of the process fluid is above a minimum flowrate threshold, the process fluid is provided to one or more terminals in the HVACR system according to the temperature control demand. A bypass flow of the process fluid through a bypass line is disabled by changing a state of a valve fluidly connected to the bypass line and one of the one or more terminals to a flow disabled state. When the flowrate of the process fluid is below the minimum flowrate threshold, the controller enables the bypass flow of the process fluid through the bypass line.
F28F 27/02 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur pour commander la répartition des sources de potentiel calorifique entre des canaux différents
90.
SYSTEMS AND METHODS FOR CONTROL OF SUPERHEAT FROM A SUBCOOLER
Systems and methods for controlled subcooling of working fluid in a heating, ventilation, air conditioning and refrigeration (HVACR) system through a suction line heat exchanger are disclosed. The suction line heat exchanger may receive a first fluid flow travelling to a suction of the compressor in the HVACR system and second flow of working fluid that is travelling from a heat exchanger receiving the discharge of the compressor to an expansion device. Superheating of the first working fluid may be determined based on temperature measurements prior to and following the suction line heat exchanger. The superheating may be used to control the quantity of the second flow of working fluid introduced into the suction line heat exchanger, for example to maintain superheat that is below a threshold value. These systems may include chillers and heat pump systems, and methods may be applied to chillers or heat pump systems.
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a heating fluid circuit, a cooling fluid circuit, and a storage fluid circuit. A thermal system of the HVACR system absorbs energy from the storage fluid circuit and rejects it to the heating fluid circuit. The storage fluid circuit includes s containing thermal storage material that can provide energy for heating or absorb energy for cooling depending on the state of the thermal storage material. Heating can be provided using the heating fluid circuit and the heat provided by the thermal system. Cooling can be provided using the cooling fluid circuit by absorbing energy from the conditioned space using a cooling fluid and rejecting energy from the cooling fluid to the storage fluid circuit. The thermal storage tanks can have heat added to them using an air source heat pump system to support heating operations.
F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible
F24D 11/02 - Systèmes de chauffage central utilisant la chaleur accumulée dans des matériaux accumulateurs utilisant des pompes de chaleur
F24D 17/02 - Systèmes domestiques d'alimentation en eau chaude utilisant des pompes à chaleur
F24F 5/00 - Systèmes ou appareils de conditionnement d'air non couverts par ou
F25D 16/00 - Dispositifs utilisant une combinaison d'un procédé de refroidissement associé à des machines frigorifiques avec un procédé de refroidissement non associé à des machines frigorifiques
F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou
92.
METHOD OF IMPROVING AIR COOLED PACKAGED UNITS PERFORMANCE FOR MULTI-PACKAGED-UNITS INSTALLATIONS
A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes an array of packaged units; and a controller to obtain an operating condition of the array of packaged units, derive the operating condition to construct an operating pattern, select one or more packaged units to be adjusted to increase efficiency of the array of packaged units based on the operating pattern, and to adjust operation of the one or more packaged units selected by the controller.
F24F 11/30 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance
F24F 11/64 - Traitement électronique utilisant des données mémorisées au préalable
F24F 11/77 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de l’apport en air traité, p. ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air en commandant la vitesse de rotation des ventilateurs
93.
CONTROL OF A LOAD FACILITY IN RESPONSE TO A DEMAND EVENT
A method and apparatus for controlling a load facility in response to a demand event. The method includes defining a plurality of resources of the load facility based on user input, establishing a response strategy for the demand event, and organizing the resources into the response strategy that specifies the resources and times during the demand event at which the resources are called to execute the one or more measures to reduce power consumption of one or more of the electrical devices, different ones of the resources called at different times during the demand event, and at least one of the resources called to execute the one or more measures, and further including executing the response strategy to reduce demand on the power grid from the load facility during the demand event.
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
Example embodiments of the present disclosure relate to a heat pump assembly including a system or method for detecting a fault in the heat pump. Some embodiments include a method for detecting a switch over valve fault where the heat pump includes a refrigerant cycle, a compressor, a metering device, a first heat exchanger, an second heat exchanger, a temperature sensor, and a switch over valve, and where the method includes operating the HVAC system in one either a heating mode or a cooling mode, monitoring a refrigerant temperature associated with the refrigerant cycle using the temperature sensor, monitoring an outdoor ambient air temperature, determining a temperature difference between the refrigerant temperature and the outdoor ambient temperature, determining whether the temperature difference is greater than a predetermined temperature difference threshold, and declaring a switch over valve fault when the temperature difference is greater than the predetermined temperature difference threshold.
Example embodiments of the present disclosure relate to a heat pump including a system or method for detecting a fault in the heat pump. Some embodiments include a method for detecting a switch over valve fault where the heat pump includes a refrigerant cycle, a compressor, a first heat exchanger, a second heat exchanger, and a switch over valve, and the method includes operating the HVAC system in one of a heating mode or a cooling mode, monitoring first, second, and third refrigerant parameters associated with the refrigerant circuit using first, second, and third refrigerant sensors, determining first and second refrigerant inputs based on the first, second, and third second refrigerant parameters, and determining a refrigerant circulation mode by comparing the first refrigerant input to the second refrigerant input to provide an indication of whether the refrigerant is circulating in the heating mode or the cooling mode.
F24F 11/32 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p. ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques
F24F 11/84 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de valves
F24F 11/86 - Systèmes de commande caractérisés par leurs grandeurs de sortieDétails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
A liquid-vapor separator includes a housing, an inlet disposed on the housing and configured to receive a working fluid into the housing, a vapor stream outlet disposed on the housing and configured to release a vapor stream of the working fluid, and a demister disposed in the housing and configured to transfer thermal energy between the working fluid and the vapor stream. In some embodiments, the working fluid absorbs thermal energy and evaporates to provide the vapor stream that includes entrained droplets. At least a portion of the entrained droplets absorbs thermal energy from the working fluid to evaporate when the vapor stream flows through the demister. In some embodiments, the liquid-vapor separator includes a passive demisting portion that demists by obstructing at least a portion of the entrained droplets.
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur
F28F 1/12 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire
F28F 1/32 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant transversalement les moyens ayant des parties engageant d'autres éléments tubulaires
97.
Systems and methods for diagnosing a loss of capacity of a climate control system
Methods and related systems for diagnosing a loss of capacity of a heating, ventilation, and air conditioning (HVAC) system are disclosed. In an embodiment, the method includes summing a runtime of an auxiliary heat source of the HVAC system over a plurality of time blocks. Additionally, the method includes summing an expected runtime of the auxiliary heat source over the plurality of time blocks. Further, the method includes comparing the runtime sum with the expected runtime sum, wherein the expected runtime for each of the plurality of time blocks is a function of an outdoor ambient temperature over a time-delay block beginning before the corresponding time block.
A method is provided for controlling combustion in a modulating gas furnace. The method includes receiving an indication of a firing rate setpoint for a burner assembly, and applying the firing rate setpoint to first and second continuous functions that map the firing rate setpoint to air-to-fuel ratio and combustion system pressure setpoints. A variable-speed draft inducer blower is set to drive to a combustion system pressure setpoint, and the modulating gas valve is controlled during combustion in the combustion system. In this regard, a combustion system pressure measurement is obtained and applied to an inverse of the first continuous function that outputs an adjusted firing rate for the combustion system pressure measurement. The adjusted firing rate is applied to a third continuous function that maps the firing rate to gas valve position, and outputs a gas valve position to which the modulating gas valve is set.
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
F23L 17/00 - Génération du tirageMitrons de cheminées ou de conduits d'alimentation en airDébouchés de conduits de cheminées
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
F24D 5/04 - Systèmes de chauffage central à air chaudSystèmes de chauffage central à gaz d'échappement fonctionnant avec émission d'air chaud dans l'espace ou le local à chauffer avec recyclage de l'air au réchauffeur d'air
F24H 3/06 - Appareils de chauffage d'air à circulation forcée l'air étant maintenu séparé de l'agent chauffant, p. ex. par circulation forcée de l'air sur des radiateurs
99.
CONTROLLING THE ELECTRICAL LOAD OF A LOAD FACILITY USING DEMAND RESPONSE
A method is provided for controlling electrical load on a power grid from a load facility using demand response. The method includes accessing memory storing computer-readable program code for decision analysis of a specified time interval for a demand-response (DR) event. The method also includes executing the computer-readable program code, via a processor, to cause an apparatus to at least make a decision to participate in or opt out of the DR event. This includes the apparatus receiving values of variables that describe occupancy and usage of the load facility for one or more time intervals. The apparatus applies the values to an algorithm that maps the variables to a decision to participate in or opt out of the DR event for the specified time interval. And the apparatus automatically notifies an operator responsible for the DR event of the decision at least when the decision is to opt out.
H02J 1/10 - Fonctionnement de sources à courant continu en parallèle
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
Systems and methods for HVAC system design and zone group management are disclosed. A floor plan of a building is received, and an HVAC system configuration is selected from among a set of template HVAC configurations. HVAC components are selected from set of template HVAC components to customize the configuration. As components are selected, candidate positions for the HVAC component within the HVAC system configuration are determined and presented to a user to ensure compliance with engineering requirements. The floor plan includes a mapping of an HVAC system configuration to an HVAC zone group. If a change is made to the HVAC system configuration of a zone associated with a zone group, it is determined if another zone group shares the same properties as the changed HVAC configuration. If one exists, the changes zone is moved to the new zone group. If not, a new zone group is created and the changes zone is moved to the new zone group.
