Abstract

An indoor unit 102 of an air conditioner according to the present invention comprises: an interposed gas pipe 30c (first pipe) which is located downstream of an indoor heat exchanger 3 during cooling operation, is formed from aluminum or an aluminum alloy (first material), and inside which refrigerant flows; and a connecting gas pipe 30b (second pipe) which is located downstream of the interposed gas pipe 30c (first pipe) during cooling operation, is formed from copper or a copper alloy (second material) different from the aluminum or aluminum alloy (first material), and inside which refrigerant flows, wherein the difference (Δ1 = D1 - D2) between the outer diameter D1 of the interposed gas pipe 30c (first pipe) and the outer diameter D2 of the connecting gas pipe 30b (second pipe) is greater than the difference (Δ2 = D3 - D4) between the inner diameter D3 of the interposed gas pipe 30c (first pipe) and the inner diameter D4 of the connecting gas pipe 30b (second pipe).

IPC Classes  ?

• F24F 1/0068 - Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing

Abstract

Provided is an electric power conversion device or the like that is configured to reduce an electric power supply harmonic current. An electric power conversion device (100) comprises a rectifier circuit (10) that converts an AC voltage applied from an AC electric power supply (E1) to a DC voltage, a smoothing capacitor (30) that smooths the DC voltage on the output side of the rectifier circuit (10), an inverter circuit (40) that converts the DC voltage of the smoothing capacitor (30) to an AC voltage and drives a motor (M1) using the AC voltage, an electric power supply voltage detection unit (50) that detects the electric power supply voltage of the AC electric power supply (E1), and a control unit (80) that controls the inverter circuit (40), the control unit (80) changing an amount of compensation for a command voltage or a command electric current when the inverter circuit (40) is driven, so as to reduce an electric power supply harmonic current, on the basis of the electric power supply voltage.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

The present invention provides a highly reliable power conversion device, etc. A power conversion device (100) comprises a converter circuit (10), a smoothing capacitor (30), an inverter circuit (60), an inverter control circuit (81), an overvoltage protection circuit (50), and an overvoltage protection control circuit (82), wherein: the inverter control circuit (81) performs motor deceleration control to reduce the rotational speed of a motor (M1) when there is a command to stop a switching operation of the inverter circuit (60) and the induced voltage of the motor (M1) is higher than the DC voltage of the smoothing capacitor (30); and the overvoltage protection control circuit (82) starts overvoltage protection control to turn on a switching element (51) of the overvoltage protection circuit (50) after starting the motor deceleration control and before, during, or after stopping the switching operation of the inverter circuit (60).

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

The present invention provides, for example, a highly reliable power conversion device. A power conversion device (100) comprises a converter circuit (10), a smoothing capacitor (20), an inverter circuit (50), an inverter control circuit (61), an overvoltage protection circuit (40), and an overvoltage protection control circuit (62) that, when a DC voltage of the smoothing capacitor (20) reaches a prescribed value after the inverter circuit (50) has stopped, performs overvoltage protection control for switching a switching element (41) to an on state, wherein: after the overvoltage protection control is initiated, the inverter control circuit (61) performs winding short-circuit control for turning on all phases of one of an upper arm and a lower arm of the inverter circuit (50) and turning off all phases of the other; and the winding short-circuit control is initiated on the basis of a prescribed state quantity correlating with the cumulative heat generation amount of a resistance element (42) accompanying the overvoltage protection control.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

Provided is a low-cost air-conditioning system that has a simple configuration. An air-conditioning system (10) comprises: a ventilation unit (1) that has an exhaust fan (13) and an air intake port (11a) and sucks in air through the air intake port (11a) in association with the exhaust fan (13) being driven; an intake duct (4); a plurality of intake-side dampers (51, 52, 53, … , 5n); a carbon dioxide concentration sensor 2; and a control device. The control device opens the intake-side damper of the plurality of intake-side dampers (51, 52, 53, … , 5n) that corresponds to a room for which carbon dioxide concentration is to be detected, closes the remaining intake-side dampers, and drives the exhaust fan. The carbon dioxide concentration sensor 2 is provided to a merge pipe (4b) of the intake duct (4), a passage that conducts air inside the ventilation unit (1) downstream of the merge pipe (4b), or an exhaust duct (6) that conducts air downstream of the ventilation unit (1).

IPC Classes  ?

• F24F 3/044 - Systems in which all treatment is given in the central station, i.e. all-air systems

Abstract

Provided are a power supply device and the like for suppressing disturbance in a waveform of a power supply current. A power supply device (100) comprises: a power factor improvement circuit (20) that has a switching element (22) and a reactor (21) provided in a current path through the switching element (22), and that improves the power factor at the time of converting an AC voltage applied from an AC power supply (E1) into a DC voltage; a smoothing capacitor (30) connected to the output side of the power factor improvement circuit (20); and a control unit (70) that outputs a prescribed pulse signal to the switching element (22). The control unit (70) sets the pulse cycle of the pulse signal to be less than a prescribed stability critical cycle. The stability critical cycle is calculated on the basis of: a load state coefficient in which the operation states of a motor (M1) and an inverter circuit (40) that receive power supply through the smoothing capacitor (30) are reflected in a prescribed manner; a DC voltage of the smoothing capacitor (30); and an inductance value of the reactor (21).

IPC Classes  ?

• H02M 7/06 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode

Abstract

Provided is a highly reliable power conversion device. A power conversion device (100) comprises a converter circuit (10), a smoothing capacitor (30), an inverter circuit (60), and an overvoltage protection circuit (50), and also comprises a first control circuit (81) having a microcomputer, a second control circuit (82) configured from an analog electronic circuit, and a power supply circuit (70). The input side of the power supply circuit (70) is connected to a pair of DC lines (K1, K2). When the voltage of a smoothing capacitor (30) becomes equal to or greater than a first prescribed value, the first control circuit (81) switches the overvoltage protection circuit (50) to an ON state, and when the voltage of the smoothing capacitor (30) becomes equal to or greater than a second prescribed value without the microcomputer of the first control circuit (81) being normally driven, the second control circuit (82) switches the overvoltage protection circuit (50) to the ON state. The second prescribed value is greater than the first prescribed value.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

[Problem] To suppress refrigerant noise while utilizing an aluminum pipe for an indoor heat exchanger. [Solution] This air conditioner comprises: a heat transfer pipe which is formed of aluminum or an aluminum alloy and is provided in an indoor heat exchanger; and a connection pipe which is connected to the heat transfer pipe and at least a part of which is formed of aluminum or an aluminum alloy. A small-diameter part formed at an end of the connection pipe is inserted into the heat transfer pipe. The length of at least one of the small-diameter parts respectively inserted into two refrigerant inlet/outlet ports of the indoor heat exchanger is shorter than the length of a small-diameter part inserted into a refrigerant inlet/outlet port of an outdoor heat exchanger.

IPC Classes  ?

• F25B 41/40 - Fluid line arrangements
• F24F 1/0067 - Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
• F25B 39/00 - EvaporatorsCondensers

Abstract

Provided is a compressor including a high-pressure chamber type hermetic container in which refrigerant containing hydrofluoroolefin refrigerant of 50 mass % or more and refrigerator oil are sealed; and a compression mechanism housed in the hermetic container and having a sliding portion made of an iron-based material, in which the refrigerator oil includes at least one refrigerator oil of polyvinyl ether or polyol ester, and a kinematic viscosity of the refrigerator oil at 40° C. is 10 mm2/s or more and 40 mm2/s or less.

IPC Classes  ?

• F25B 31/02 - Compressor arrangements of motor-compressor units
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/02 - LubricationLubricant separation

Abstract

Provided is a power conversion device or the like in which a power supply harmonic current is reduced while suppressing a decrease in efficiency. A power conversion device (100) comprises: a converter circuit (10) that converts an AC voltage applied from an AC power supply (E1) into a DC voltage; an inverter circuit (30) that converts the DC voltage on the output side of the converter circuit (10) into an AC voltage and applies the AC voltage to a motor (M1); and a control device (60) that controls the inverter circuit (30). The control device (60) adjusts the rotation speed and current phase of the motor (M1) so as to reduce the power supply harmonic current associated with the rectification in the converter circuit (10) by the motor harmonic current associated with the drive of the inverter circuit (30) and the motor (M1).

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

A compressor includes a check valve holder and a bypass valve holder, a first through-hole in a fixed scroll, a discharge buffer chamber enclosed by the floating seal plate and the fixed scroll, and a check valve in the discharge buffer chamber. A bypass passage is formed in the fixed scroll, the discharge buffer chamber is in communication with the bypass passages, and bypass valves are disposed in the bypass passages and are movable with respect to the bypass valve holder between a third position and a fourth position; the bypass valves open the bypass passages when the bypass valves are in the third position, and the bypass valves close the bypass passages when the bypass valves are in the fourth position.

IPC Classes  ?

• F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels

Abstract

[Problem] To further reduce the volume of a heat-absorbing material while preventing the occurrence of a disproportionation reaction in a refrigeration cycle device using a refrigerant that could induce a disproportionation reaction. [Solution] A refrigeration cycle device using a refrigerant that could induce a disproportionation reaction, wherein: the refrigeration cycle device comprises a compressor for compressing refrigerant; a heat absorption member for absorbing heat by means of melting latent heat is disposed in a refrigerant passage through which the refrigerant flows; and the melting point of the heat absorption member is higher than the maximum discharge temperature of the compressor, and is lower than the maximum value of a start temperature at which the refrigerant could induce the disproportionation reaction at a temperature that corresponds to each discharge pressure within a discharge pressure range of the compressor.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

This air conditioner 100 includes an outdoor unit 20 and a plurality of indoor units 10a to 10c. The air conditioner 100 is configured to transition to a thermo OFF state in response to the corresponding room temperature reaching a first temperature during a thermo ON state for each indoor unit 10a to 10c, and to transition to the thermo ON state in response to the corresponding room temperature reaching a second temperature that is higher or lower than the first temperature during the thermo OFF state. The air conditioner 100 comprises a control unit 26 for performing a control so that an indoor unit having the corresponding room temperature between the first temperature and the second temperature among the plurality of indoor units 10a to 10c is transitioned to the thermo ON state in response to an index value related to the current capability provided by the plurality of indoor units 10a to 10c having satisfied a condition.

IPC Classes  ?

• F24F 11/65 - Electronic processing for selecting an operating mode

Abstract

[Problem] To achieve control of an optional device while minimizing costs in cases in which the optional device is connected to an air conditioner. [Solution] An air conditioner comprising: an operation device that operates the air conditioner; and a control unit that controls an optional device in accordance with the air conditioning operation of the air conditioner when connection setting for setting connection of the optional device to the air conditioner is performed and the operation device is not equipped with an optional operation function for operating the optional device.

IPC Classes  ?

• F24F 11/50 - Control or safety arrangements characterised by user interfaces or communication

Abstract

Provided is an air conditioner capable of increasing the accuracy of determining that an operation valve is closed. An air conditioner 100 is provided with: a plurality of indoor units A, B that comprise indoor heat exchangers 4a, 4b; an outdoor unit C that comprises a compressor 1; a plurality of operation valves 3a–6b that open and close flow of a refrigerant through the plurality of indoor units A, B and the outdoor unit C; a rotational rate detection part 14 that detects the rotational rate of the compressor 1; a temperature difference detection part 15 that detects temperature differences between the temperatures of the indoor heat exchangers 4a, 4b and the temperatures of rooms in which the indoor heat exchangers are installed; and a determination part 16 that determines that an operation valve is closed if the rotational rate detected by the rotational rate detection part 14 is equal to or greater than a standard value and the temperature difference detected by the temperature difference detection part 15 is less than a closure assessment value. The standard value is a threshold value for a rated rotational rate of the compressor 1 determined in accordance with the total capacity of the indoor units that are running.

IPC Classes  ?

• F24F 11/49 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
• F24F 110/10 - Temperature
• F24F 110/12 - Temperature of the outside air
• F24F 110/20 - Humidity

Abstract

An air conditioning system (ACS) includes: an air conditioner body (indoor unit 200); and an air conditioning control terminal (100) that operates using current supplied from the air conditioner body, and has an input unit (40) for inputting key operations, a display unit (50), a backlight used by the display unit (50), and a processing unit (10) which controls the input unit, the display unit, and the backlight and communicates with the air conditioner body. The processing unit (10) operates the backlight at or below a prescribed brightness level corresponding to the model of the air conditioner body.

IPC Classes  ?

• F24F 11/52 - Indication arrangements, e.g. displays
• F24F 11/88 - Electrical aspects, e.g. circuits

Abstract

An air conditioner (A) according to the present invention comprises: a heat exchanger (15) having heat exchanger tubes (r1) formed from aluminum or an aluminum alloy; and connecting tubes (r0) which are formed, at least in part, from aluminum pipes made of aluminum or an aluminum alloy and through which passes a refrigerant flowing out of the heat exchanger tubes (r1) or a refrigerant flowing into the heat exchanger tubes (r1), wherein the aluminum pipe of at least one of the connecting tubes (r0) connected to each of two refrigerant in-outlets provided in the heat exchanger tubes (r1) is covered, at least in part, with a soundproofing material, a sound-absorbing material, or a sound-insulating material (19a, 19b).

IPC Classes  ?

• F24F 1/0068 - Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing

Abstract

[Problem] To improve the operating efficiency of a refrigeration cycle device. [Solution] This refrigeration cycle device comprises an economizer circuit that reduces the pressure of a refrigerant branched from a refrigerant path between a condenser and an evaporator by means of an economizer expansion valve, and causes the refrigerant to merge with a refrigerant of which the pressure has been reduced to an intermediate pressure in a compressor, a supercooling circuit that reduces the pressure of the refrigerant branched from the refrigerant path between the condenser and the evaporator by means of a supercooling expansion valve and causes the refrigerant to merge with a refrigerant on a suction side of the compressor, a first temperature sensor that detects a first refrigerant temperature of the refrigerant discharged from the compressor, and a control unit for adjusting the opening degree of the economizer expansion valve and the opening degree of the supercooling expansion valve, wherein the control unit sets the opening degree of the supercooling expansion valve to a first opening degree when the rotational speed of the compressor is a first rotational speed, sets the opening degree of the supercooling expansion valve to a second opening degree greater than the first opening degree when the rotational speed is a second rotational speed greater than the first rotational speed, and controls the opening degree of the economizer expansion valve in accordance with the first refrigerant temperature.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

[Abstract] [Problem] To prevent a connection pipe connected to a heat transfer pipe from being broken when the connection pipe is bent during air conditioner installation. [Solution] An air conditioner (1) comprises: a plurality of heat transfer pipes (110) formed of aluminum or an aluminum alloy; connection pipes (120) connected to refrigerant inlet/outlet ports (114) of the heat transfer pipes and at least partially formed of aluminum or an aluminum alloy; and a fixing member (132) that fixes at least one of the connection pipes connected to each of the two refrigerant inlet/outlet ports provided in the heat transfer pipes to another member other than the connection pipe inside an indoor unit (2) of the air conditioner.

IPC Classes  ?

• F24F 1/0059 - Indoor units, e.g. fan coil units characterised by heat exchangers
• F24F 1/0068 - Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing

Abstract

The present invention addresses the problem of providing a compressor with improved sliding performance in a sliding part. To solve this problem, a compressor 100 comprises: a high-pressure chamber-type sealed vessel 1 in which are sealed a refrigerant containing 50 mass% or more of a hydrofluoroolefin refrigerant, and a refrigeration oil; and a compression mechanism part 8 which is housed in the sealed vessel 1 and which has a sliding part 9 formed from an iron-based material. The refrigeration oil contains at least one of a polyvinyl ether or a polyolester refrigeration oil, and the kinematic viscosity of the refrigeration oil at 40°C is between 10 mm2/s and 40 mm2/s inclusive.

IPC Classes  ?

• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

Abstract

An air-conditioner including a main refrigerant circuit having a compressor, a heat-source-side heat exchanger, an expansion valve, and a utilization-side heat exchanger, a bypass path, another expansion valve that decompresses refrigerant flowing in the bypass path, an internal heat exchanger, an opening degree adjuster, and a setter that sets the target temperature difference on the basis of the degree of subcooling of the utilization-side heat exchanger.

IPC Classes  ?

• F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
• F25B 30/02 - Heat pumps of the compression type

Abstract

Provided is a scroll compressor etc. having good performance and high reliability. This scroll compressor (100) comprises a compressing mechanism part (2) that compresses, in a compression chamber (C1), a refrigerant suctioned in via a suction chamber (J1) and discharges the compressed refrigerant via a discharge port (J2). The compressing mechanism part (2) has a fixed scroll (21) that includes a spiral fixed lap (21b) and an orbiting scroll (22) that includes a spiral rotary lap (22b). The compression chamber (C1) is formed between the fixed lap (21b) and the rotary lap (22b). The compressing mechanism part (2) has a liquid injection hole (H1) that guides a liquid refrigerant to the compression chamber (C1), and has a gas injection hole (H2) that guides a gas refrigerant to a compression chamber (C2). The liquid injection hole (H1) is provided at a position closer to the suction chamber (J1) than the gas injection hole (H2).

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/04 - HeatingCoolingHeat insulation

Abstract

The present invention provides an air conditioner in which compressor lubrication failure is suppressed appropriately in a refrigerant circuit using a non-azeotropic refrigerant mixture. The air conditioner is an air conditioner (1) comprising a refrigerant circuit in which a compressor (11), condensers (13, 31), pressure reducers (15, 33), and evaporators (31, 13) are connected in sequence by refrigerant pipes to circulate a refrigerant, the refrigerant being a non-azeotropic refrigerant mixture of two or more kinds of refrigerant components, and the discharge temperature of the compressor (11) being controlled to be higher than a temperature near the saturation temperature at the compressor discharge pressure of the highest-boiling-point component having the highest boiling point among the refrigerant components.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

Provided is a compressor etc. having good performance and high reliability. This compressor (100) comprises a cylindrical oil ring (15) provided between a compressing mechanism part (2) and an electric motor (6). A balance weight (8) has an annular section (8a) that is fixed to a crank shaft (3) while the crank shaft (3) is inserted therethrough, an arcuate section (8b) that extends upward from the annular section (8a), and at least one protruding section (8c) that protrudes downward from the annular section (8a). The upstream end of a discharge pipe (P2) is positioned on the radially inner side of the oil ring (15), and the lower end of the oil ring (15) surrounds a winding section (61b) of a stator (61). The protruding section (8c) protrudes further downward than the height position on the inner circumferential edge of the lower surface of the annular section (8a).

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 23/02 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors

Abstract

[Problem] The purpose of the present invention is to control an injection amount without needing to acquire a large quantity of data. [Solution] Provided is an air conditioner comprising: a main refrigerant circuit having a compressor, a heat-source-side heat exchanger, a first expansion valve, and a use-side heat exchanger; a bypass pathway that causes some refrigerant flowing from the use-side heat exchanger to the heat-source-side heat exchanger to merge with refrigerant compressed to an intermediate pressure in the compressor; a second expansion valve that depressurizes the refrigerant flowing in the bypass pathway; an internal heat exchanger that imparts, to the depressurized refrigerant in the bypass pathway, heat of the refrigerant in the main refrigerant circuit flowing from the use-side heat exchanger to the heat-source-side heat exchanger; an opening degree adjustment means that, in a warming operation, adjusts the opening degree of the second expansion valve on the basis of a target temperature difference and the temperature difference in terms of refrigerant temperature between an outlet and an inlet of the internal heat exchanger; and a setting means that sets the target temperature difference on the basis of the degree of supercooling of the use-side heat exchanger.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

[Problem] To provide an air conditioner which can ensure safety when a flammable refrigerant is utilized. [solution] An air conditioner employing a flammable refrigerant, wherein an ion-exchange resin having sulfonic acid groups or ammonium groups as functional groups has been disposed inside a channel for the refrigerant. In association with operations of the air conditioner, an acid component of the refrigerant flowing through the refrigeration cycle reacts with the functional groups to thereby yield a first odorous substance.

IPC Classes  ?

• F24F 11/36 - Responding to malfunctions or emergencies to leakage of heat-exchange fluid
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

[Problem to be Solved] To provide air-conditioner and casing structure. [Means for Solving Problem] An air-conditioner of the present invention comprises heat exchanger, a fan unit, non-azeotropic refrigerant conducting heat exchange with the heat exchanger, and a casing enclosing at least the heat exchanger and a fan unit. The air-conditioning apparatus further comprises a fan unit comprising a propeller fan, the propeller fan rotating in a positive direction and a reverse direction depending on operating modes of the air-conditioning apparatus; and a fan motor for rotating the propeller fan in the positive direction and in the reverse direction to achieve a counter-flow heat exchange condition regardless of the operating modes, wherein the propeller fan includes a plurality of fan blades having a symmetrical shape with respect to a symmetry axis passing a center of the propeller fan. The air-conditioning apparatus further comprises a wind guides and crosspieces at the lateral side in order to eliminate short-cycling and enhance airflow performance respectively.

IPC Classes  ?

• F24F 1/48 - Component arrangements in separate outdoor units characterised by airflow, e.g. inlet or outlet airflow
• F24F 1/38 - Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
• F24F 1/56 - Casing or covers of separate outdoor units, e.g. fan guards

Abstract

Provided is a refrigeration cycle device for which efficiency has been improved. The refrigeration cycle device comprises: a lower-level compressor that compresses a refrigerant; an intermediate cooler that cools the refrigerant discharged from the lower-level compressor; a higher-level compressor that compresses the refrigerant which passed through the intermediate cooler; a heat dissipator that cools the refrigerant discharged from the higher-level compressor; and a cooling amount ratio changing means for changing the ratio between the amount of cooling performed by the intermediate cooler and the amount of cooling performed by the heat dissipator.

IPC Classes  ?

• F25B 1/10 - Compression machines, plants or systems with non-reversible cycle with multi-stage compression
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

[Problem] The purpose of the present invention is to provide an option unit that is capable of handling spaces of a plurality of sizes. [Solution] The present invention is an air conditioner comprising an indoor unit, an option unit that is provided separately from the indoor unit, and a control unit that causes the option unit to be driven at different operating strengths with respect to the same control command in accordance with the type of the indoor unit.

IPC Classes  ?

• F24F 11/70 - Control systems characterised by their outputsConstructional details thereof
• F24F 11/52 - Indication arrangements, e.g. displays
• F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators

Abstract

Provided are an air conditioning device, a function expansion unit of the air conditioning device, and an indoor unit of the air conditioning device, configured so that a filter can be removed easily, the design is not affected, and dust is less likely to fall when removing the filter. An air conditioning device (1) includes: an indoor unit (10); and a function expansion unit (14) that is provided separately from the indoor unit (10). The function expansion unit (14) includes: a housing (40); an exterior member (42) that constitutes a part of the housing (40), has an opening (41), and is configured so as to be attachable/detachable to/from the housing (40); and a filter (43) that is mounted on the exterior member (42) so as to cover the opening (41).

IPC Classes  ?

• F24F 1/0073 - Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters

Abstract

[Problem] The purpose of the present invention is to enable suppression of vibrations and noise when a drive source is driven, the drive source being provided to an optional unit of an air conditioner. [Solution] The present invention comprises: an indoor unit; an optional unit which is provided as a separate unit from the indoor unit; and an installation panel which is attached to a wall surface. The optional unit is installed or attached, with an elastic body interposed therebetween, to the installation panel or the indoor unit.

IPC Classes  ?

• F24F 13/20 - Casings or covers

Abstract

[Problem] The purpose of the present invention is to enable suppression of vibrations and noise when a drive source is driven, the drive source being provided to an optional unit of an air conditioner. [Solution] The present invention comprises: an indoor unit; an optional unit which is provided as a separate unit from the indoor unit; and an installation panel which is attached to a wall surface. The optional unit is installed or attached, with an elastic body interposed therebetween, to the installation panel or the indoor unit.

IPC Classes  ?

• F24F 13/20 - Casings or covers

Abstract

An air conditioner (K) according to the present invention is provided with: an indoor unit (1); a function extension unit (2) that is arranged on the side of the indoor unit (1); and a gap insertion member (3) that is arranged between the indoor unit (1) and the function extension unit (2).　It is preferred that the rigidity of the outer surface side of the gap insertion member (3) be lower than a housing (1k) of the indoor unit (1) and a housing (2k) of the function extension unit (2).

IPC Classes  ?

• F24F 13/20 - Casings or covers

Abstract

[Problem] The purpose of the present invention is to connect an optional unit of an air conditioner to an earth ground with a simple structure. [Solution] Provided is a configuration including an indoor unit, an outdoor unit, and an optional unit. The optional unit has a ground connection line that is connected to at least one of: a ground connection line of the indoor unit; a ground connection line of the outdoor unit; a metal member, which is disposed in the indoor unit or the outdoor unit and is connected to the ground connection line of the indoor unit or the ground connection line of the outdoor unit; and a ground connection line connecting the indoor unit to the outdoor unit.

IPC Classes  ?

• F24F 11/88 - Electrical aspects, e.g. circuits

Abstract

Provided is a highly reliable air conditioner. An air conditioner (100) comprises: an indoor unit (1); and a ventilation unit (3) that is powered by the indoor unit (1). The ventilation unit (3) is equipped with terminal blocks (31, 32), and the terminal blocks (31, 32) have temperature fuses (47, 48). If the temperature fuses (47, 48) blow, the power supply to the terminal blocks (31, 32) is stopped. Moreover, the ventilation unit (3) is provided with a housing made primarily of a material different from metal.

IPC Classes  ?

• F24F 11/88 - Electrical aspects, e.g. circuits
• F24F 11/52 - Indication arrangements, e.g. displays

Abstract

Provided are a device and a system with which it is possible to reliably prevent a current exceeding an upper limit, even when a power source of an optional apparatus is turned on while an air conditioner is operating in isolation. This air conditioning device comprises an indoor unit 10 and an outdoor unit 11, and includes an outdoor control circuit 36 which carries out control such that the maximum current of the outdoor unit 11 when the indoor unit 10 is connected to an optional apparatus 13 becomes lower than the maximum current of the outdoor unit 11 when the indoor unit 10 is not connected to the optional apparatus 13 or when initially configured.

IPC Classes  ?

• F24F 11/88 - Electrical aspects, e.g. circuits

Abstract

Provided is a reliable air conditioner comprising an auxiliary device. This air conditioner (100) contains an indoor unit (1) and a ventilation unit (3). The ventilation unit (3) comprises a first terminal block (31) and a second terminal block (32). The first terminal block (31) and the second terminal block (32) each have a temperature fuse (47, 48). When a temperature fuse (47, 48) melts, the flow of current to the first terminal block (31) and the second terminal block (32) is stopped. Moreover, the ventilation unit (3) comprises a housing, the main component of which is a material other than metal.

IPC Classes  ?

• F24F 11/88 - Electrical aspects, e.g. circuits
• F24F 11/52 - Indication arrangements, e.g. displays

Abstract

An outdoor unit for an air conditioner according to the present invention comprises: a housing which is for the outdoor unit and which contains metal as a main component; a support part which contains resin as a main component; and a communication unit part (NFC substrate (50)) which is indirectly fixed to the housing via the support part. The communication unit part is an NFC module which has an NFC antenna (54). The distance from the NFC antenna (54) to the outer surface of the outdoor unit is shorter than the communication distance of the NFC antenna (54). The housing for the outdoor unit is provided with an opening (sheet metal opening part (23)) in a portion where the NFC antenna (54) is positioned, and at least a portion of the opening is covered with a resin cover. The distance from the NFC antenna (54) to the resin cover is shorter than the distance from a portion of the housing where the support part is fixed to the housing to the NFC antenna (54).

IPC Classes  ?

• F24F 1/56 - Casing or covers of separate outdoor units, e.g. fan guards

Abstract

[Problem] The purpose of the present invention is to make it possible to supply electric power to a ventilation device even when there is a restriction on the number of outlets. [Solution] The present invention comprises an indoor unit to which electric power is supplied from a commercial power supply, and a ventilation device. The ventilation device has a first connection terminal to which a first cable is connected, and a second connection terminal to which a second cable is connected. Electric power is supplied to the ventilation device from the indoor unit via the first cable. Additionally, electric power is supplied to the outdoor unit from the indoor unit via the first cable and the second cable.

IPC Classes  ?

• F24F 13/20 - Casings or covers

Abstract

[Problem] The purpose of the present invention is to make it possible to supply electric power to a plurality of indoor units even when there is a limitation on the number of electrical outlets. [Solution] The present invention comprises a first indoor unit to which electric power is supplied from a commercial power supply, and a ventilation device. The ventilation device has a first connection terminal to which a first cable is connected, and a second connection terminal to which a second cable is connected. Electric power is supplied to the ventilation device from the first indoor unit via the first cable. Electric power is supplied to an outdoor unit from the first indoor unit via the first and second cables.

IPC Classes  ?

• F24F 1/0007 - Indoor units, e.g. fan coil units

Abstract

[Problem] The purpose of the present invention is to enable power supply to an optional unit, even when there is a restriction on the number of outlets. [Solution] The present invention comprises: an indoor unit that is supplied with power from a commercial power source; and a ventilation device. The ventilation device comprises: a first connection terminal to which a first cable is connected; and a second connection terminal to which a second cable is connected. The ventilation device is supplied with power from the indoor unit via the first cable. An outdoor unit is supplied with power from the indoor unit via the first cable and the second cable.

IPC Classes  ?

• F24F 13/20 - Casings or covers

Goods & Services

Heat pump hot water space heating and cooling installations; heat pump water heaters.

Abstract

Disclosed is an air conditioner comprising an operation device (4). The operation device (4) is provided with a near-field wireless communication unit (410, 411, 412). The air conditioner comprises a control unit (40) that determines whether the air conditioner is in a permission mode in which the use of the near-field wireless communication unit (410, 411, 412) is permitted or in a forbidden mode in which the use of the near-field wireless communication unit (410, 411, 412) is forbidden, and performs, in the permission mode, control for setting up the air conditioner or for providing information, on the basis of data communication with an external terminal device (7) through the near-field wireless communication unit (410, 411, 412).

IPC Classes  ?

• F24F 11/56 - Remote control

Goods & Services

Heat pump, hot water, and space heating and cooling installations; combination heat pump, hot water, and space heating and cooling installations; heat pump water heaters

Abstract

[Problem] The purpose of the present invention is to minimize functional deterioration of a refrigerator oil and reduce the possibility of decreases in the reliability of an air conditioner. [Solution] The present invention comprises a refrigeration cycle in which a refrigerant containing trifluoroiodomethane circulates and which has the following sealed therein: a refrigerator oil; and a deteriorated substance-capturing material that is capable of adsorbing and thereby capturing hydrogen iodide generated together with deterioration of the trifluoroiodomethane in the refrigerant, said deteriorated substance-capturing material being capable of capturing hydrogen iodide with a mass of 0.0037 times or less the mass of the refrigerator oil.

IPC Classes  ?

• C10M 169/04 - Mixtures of base-materials and additives
• C10N 40/30 - Refrigerator lubricant
• F25B 43/00 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
• C10M 105/38 - Esters of polyhydroxy compounds
• C10M 107/24 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol, aldehydo, ketonic, ether, ketal or acetal radical
• C10M 107/34 - Polyoxyalkylenes
• C10M 129/18 - Epoxides
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• C09K 5/04 - Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice-versa

Goods & Services

Heat pump hot water space heating and cooling installations; heat pump water heaters.

Goods & Services

Air-conditioning apparatus; air-conditioning installations; boilers, other than parts of non-electric prime movers or engines, namely, boilers for heating installations and electrical boilers; chiller units being parts of water and air cooling installations; freezing machines and apparatus; Air cooling apparatus; refrigerating apparatus and machines; heating installations, namely, industrial boilers; heating boilers; hot water heating installations, namely, hot water boilers;

Abstract

[Problem] To provide an air-conditioning device and method which inhibit odor emission. [Solution] An air-conditioning device 1 includes an indoor heat exchanger 11 having a heat transfer pipe and fins 101b and a control unit 102 that controls operations, wherein the heat transfer pipe is made of aluminum and the control unit 102 performs a cleaning operation in which the temperature of the heat transfer pipe is regulated to 0°C or lower to thereby deposit frost or ice on the heat transfer pipe or the fins.

IPC Classes  ?

• F24F 11/48 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
• F24F 1/0059 - Indoor units, e.g. fan coil units characterised by heat exchangers

Abstract

The present invention provides a controller. The controller comprises: a housing, a display screen, a mainboard, and an NFC module. The housing comprises an accommodating cavity; the accommodating cavity comprises a light-transmitting region; the display screen and the mainboard are both located in the accommodating cavity; the display screen is electrically connected to the mainboard, and the display screen is provided toward the light-transmitting region. The NFC module is electrically connected to the mainboard, the NFC module is fixedly connected to an inner wall of the accommodating cavity, and a vertical projection of the display screen on the mainboard is located in a vertical projection of the NFC module on the mainboard.

IPC Classes  ?

• H04W 12/47 - Security arrangements using identity modules using near field communication [NFC] or radio frequency identification [RFID] modules

Goods & Services

Air-conditioning apparatus; air-conditioning installations; boilers, other than parts of non-electric prime movers or engines; chiller units being parts of water and air cooling installations; chilling apparatus; freezing machines and apparatus; cooling installations and machines; refrigerating apparatus and machines; gas water heaters; heating apparatus; heating boilers; hot water heating installations; household electrothermic appliances, other than for beauty or sanitary purposes; water heaters [apparatus]; parts and fittings for the aforesaid goods in this class.

Abstract

In a scroll compressor, at an end plate surface of a fixed scroll, an annular back pressure groove connected to a back pressure chamber is provided, and an arc-shaped first groove and an arc-shaped second groove are provided inside the back pressure groove in a radial direction. A distance between the second groove and the back pressure groove is shorter than a distance between the first groove and the back pressure groove. A revolving scroll is provided with a first hole and a second hole for guiding lubricant oil from an oil supply path to the end plate surface side of the fixed scroll. At least part of a movement locus of an opening of the first hole is included in the first groove. At least part of a movement locus of an opening of the second hole is included in the second groove. The first groove and the second groove at least partially overlap with each other in the radial direction.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/02 - LubricationLubricant separation

Abstract

[Problem] To keep an indoor unit hygienic. [Solution] Provided is an indoor unit that has copper or copper alloy disposed in at least a portion of a ventilation path downstream from a heat exchanger.

IPC Classes  ?

• F24F 13/20 - Casings or covers
• F24F 1/0071 - Indoor units, e.g. fan coil units with means for purifying supplied air

Abstract

Disclosed is an air conditioner 100 comprising an indoor unit 10. The indoor unit 10 includes an indoor heat exchanger 12 and a vertical wind-directing plate 19. In the indoor unit 10, copper or a copper alloy is provided to a ventilation passage on the upstream-side of the indoor heat exchanger 12, a ventilation passage on the downstream-side of the indoor heat exchanger 12, or the vertical wind-directing plate 19. The indoor unit 10 comprises a control unit that carries out control for heating the provided copper or copper alloy.

IPC Classes  ?

• F24F 13/20 - Casings or covers
• F24F 1/0071 - Indoor units, e.g. fan coil units with means for purifying supplied air
• F24F 1/009 - Indoor units, e.g. fan coil units characterised by heating arrangements

Abstract

A controller includes a first storage storing setting information used for operation control of a heat exchange system that exchanges heat between fluid and a heat medium. The controller executes operation control using the setting information. A communicator includes a second storage medium storing setting information used for the operation control, the communicator communicates with external equipment, the controller and the communicator are mounted on an identical outdoor unit, an identical indoor unit, or an identical central control panel. The controller and the communicator execute synchronization processing between the setting information stored in the first storage and the setting information stored in the second storage, and in a case where the setting information stored in the second storage has been changed in response to a request from the external equipment, the communicator transmits the changed setting information to the controller in the synchronization processing.

IPC Classes  ?

• F24F 11/63 - Electronic processing

Abstract

The present invention provides an air-conditioning and ventilation system which provides a high level of comfort and performs appropriate ventilation. An air-conditioning and ventilation system (100) is provided with an air conditioning unit (40) which has at least a compressor and carries out air conditioning of a room (R1), and a ventilation unit (10) which has an intake fan and an outlet fan and ventilates the room (R1), wherein if a detection value from a carbon dioxide concentration sensor (20) or a free particle measurement sensor provided to the room (R1) is at or above a first prescribed value, the ventilation unit (10) increases the amount of ventilation, and the air conditioning unit (40) increases the rotational speed of the compressor.

IPC Classes  ?

• F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
• F24F 7/007 - Ventilation with forced flow

Abstract

In order to provide a highly reliable scroll compressor, etc. This scroll compressor (100) comprises: a sealed container (1); an electric motor (4); a crankshaft (3); a fixed scroll (22); an orbiting scroll (23); an orbiting bearing (13) that pivotally supports the crankshaft (3) so that the crankshaft (3) is able to rotate with respect to the orbiting scroll (23); and a frame (21) that has a through-hole (H1) for the crankshaft (3) and supports the fixed scroll (22), the scroll compressor (100) further comprising an orbiting balance weight (14) provided between the frame (21) and a mirror plate (23a) and rotating with the crankshaft (3), wherein the crankshaft (3) and the orbiting balance weight (14) are fitted together, and a gap is provided between a protruding part (31b) on the crankshaft (3) side and a fitting hole on the orbiting balance weight (14) side.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

Provided is a ventilation system for appropriately ventilating a given space. A ventilation system (100) is provided with carbon dioxide concentration sensors (21-23) for detecting the carbon dioxide concentration in a room, an air supply fan (13) for supplying air to the room, an exhaust fan (14) for exhausting air from the room, and a control device (18) for controlling the air supply fan (13) and/or the exhaust fan (14) on the basis of variations in detection values of the carbon dioxide concentration sensors (21-23).

IPC Classes  ?

• F24F 7/007 - Ventilation with forced flow
• F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators

Goods & Services

Computer programs; computer software applications, downloadable; downloadable image files; electronic control apparatus, electronic navigating apparatus, electronic testing apparatus, electronic monitoring apparatus, other than for medical purposes [not including geiger counters, high frequency apparatus for welding, cyclotrons not for medical purposes, industrial X-ray machines and apparatus not for medical use, industrial betatrons not for medical use, magnetic prospecting machines, magnetic object detectors, seismic exploration machines and apparatus, hydrophone machines and apparatus, echo sounders, ultrasonic flaw detectors, ultrasonic sensors, electronic door closing control systems and electron microscopes]; personal digital assistants in the shape of a watch; smartphones; telecommunication machines and apparatus; electronic publications; downloadable music files; measuring or testing machines and instruments; monitoring apparatus, other than for medical purposes; transmitters [telecommunication]; power distribution or control machines and apparatus; remote controls for air-conditioning apparatus; measuring and control devices for air-conditioning technology. Air conditioners for industrial purposes; air-conditioning apparatus; heating installations; air-conditioning installations; household electrothermic appliances, other than for beauty or sanitary purposes; stoves for household purposes, non-electric; boilers, other than parts of non-electric prime movers or engines; gas water heaters for household purposes; freezing machines and apparatus for industrial purposes; evaporators for air conditioners. Computer programming; technological advice relating to computers, automobiles and industrial machines; providing computer programs designed to the specifications of others; providing computer programs on data networks; providing computer programs on data networks (software as a service [SaaS]); monitoring of computer systems by remote access; cloud computing; electronic data storage; cloud storage services for electronic data.

Abstract

Provided is a propeller fan that can be made thinner, produces little noise, and is highly efficient. A propeller fan U1 comprises: a propeller (3) having a boss section (33) and a plurality of blades (32); and a bell mouth (8) provided on the outer circumferential side of the propeller (3). A first position (α), located closest to the suction side at the front edge portion (32a) of each blade (32), is provided in between a blade tip front edge (321) and a blade root front edge (323), such that in between the blade tip front edge (321) and the first position (α), the front edge portion (32a) forms a concave shape curving toward a blowout side, while a rear edge portion (32b) of the blade (32) forms a convex shape curving toward the blowout side.

IPC Classes  ?

• F04D 29/38 - Blades

Goods & Services

Computer programs; computer software applications, downloadable; downloadable image files; personal digital assistants in the shape of a watch; smartphones; telecommunication machines and apparatus; electronic publications; downloadable music files; measuring or testing machines and instruments; monitoring apparatus, other than for medical purposes; transmitters [telecommunication]; software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet; wireless monitor and data transmitter for monitoring and reporting climate conditions; wireless controllers to control heating, ventilation and air conditioning equipment. Air conditioners for industrial purposes; air-conditioning apparatus; heating installations; air-conditioning installations; household electrothermic appliances, other than for beauty or sanitary purposes; stoves for household purposes, non-electric; boilers, other than parts of non-electric prime movers or engines; gas water heaters for household purposes. Computer programming; technological advice relating to computers, automobiles and industrial machines; rental of computers; providing computer programs on data networks; software as a service [SaaS]; monitoring of computer systems by remote access; all the afore said relating to software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet, wireless monitor and data transmitter for monitoring and reporting climate conditions, and electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment.

Goods & Services

Computer programs; computer software applications, downloadable; downloadable image files; personal digital assistants in the shape of a watch; smartphones; telecommunication machines and apparatus; electronic publications; downloadable music files; measuring or testing machines and instruments; monitoring apparatus, other than for medical purposes; transmitters [telecommunication]; software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet; wireless monitor and data transmitter for monitoring and reporting climate conditions; electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment. Air conditioners for industrial purposes; air-conditioning apparatus; heating installations; air-conditioning installations; household electrothermic appliances for heating, steam generating, cooking, drying or ventilating purposes, other than for beauty or sanitary purposes; stoves for household purposes, non-electric; boilers, other than parts of non-electric prime movers or engines; gas water heaters for household purposes. Computer programming; technological advice relating to computers, automobiles and industrial machines; rental of computers; providing computer programs on data networks; software as a service [SaaS]; monitoring of computer systems by remote access; all the aforesaid relating to software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet, wireless monitor and data transmitter for monitoring and reporting climate conditions, and electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment.

Goods & Services

Computer programs; computer software applications, downloadable; downloadable image files; personal digital assistants in the shape of a watch; smartphones; telecommunication machines and apparatus; electronic publications; downloadable music files; measuring or testing machines and instruments; monitoring apparatus, other than for medical purposes; transmitters [telecommunication]; software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet; wireless monitor and data transmitter for monitoring and reporting climate conditions; electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment. Air conditioners for industrial purposes; air-conditioning apparatus; heating installations; air-conditioning installations; household electrothermic appliances, for heating, steam generating, cooking, drying or ventilating purposes, other than for beauty or sanitary purposes; stoves for household purposes, non-electric; boilers, other than parts of non-electric prime movers or engines; gas water heaters for household purposes. Computer programming; technological advice relating to computers, automobiles and industrial machines; rental of computers; providing computer programs on data networks; software as a service [SaaS]; monitoring of computer systems by remote access; all the aforesaid relating to software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet, wireless monitor and data transmitter for monitoring and reporting climate conditions, and electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment.

Goods & Services

Downloadable computer programs in the field of indoor climate and temperature control for monitoring and controlling heating, ventilation and air-conditioning equipment; downloadable computer software applications in the field of indoor climate and temperature control for monitoring and controlling heating, ventilation and air-conditioning equipment; downloadable image files containing the images of houses, apartments, and commercial buildings for the purpose of monitoring and controlling heating, ventilation and air-conditioning equipment; personal digital assistants in the shape of a watch; smartphones; telecommunication apparatus in the nature of wireless receivers in the form of jewelry, smartphones, telephones, facsimile machines; downloadable electronic publications in the nature of magazines, newsletters, booklets, and leaflets in the field of indoor climate and temperature control; downloadable music files; measuring or testing machines for measuring heating, ventilation, and air conditioning equipment, namely, climate control systems consisting of heating, ventilation, and air conditioning control devices; monitoring apparatus, other than for medical purposes, namely, electric and electronic video surveillance installations; indoor climate and temperature condition transmitters; downloadable computer software for wireless monitoring and controlling of heating, ventilation, and air conditioning equipment using the internet; wireless monitor and data transmitter for monitoring and reporting indoor climate and temperature conditions; electrical controllers for wirelessly controlling heating, ventilation, and air conditioning equipment Air conditioners for industrial purposes; air-conditioning apparatus; industrial heating installations; air-conditioning installations for household purposes; household electrothermic appliances, other than for beauty or sanitary purposes in the nature of space heating apparatus and ventilation and air-conditioning apparatus and instruments; non-electric stoves for household purposes, namely, gas, coal, and ceramic stoves; boilers, other than parts of non-electric prime movers or engines, namely, boilers for heating installations and electrical boilers; gas water heaters for household purposes Computer programming; technological advice provided to Internet users by means of a support hotline relating to monitoring and controlling heating, ventilation, and air conditioning equipment for computers, automobiles and industrial machines by remote access; rental of computers; providing computer programs, namely, creating of computer programs in the field of indoor climate and temperature control on data networks; software as a service (SaaS) services featuring software for database management and monitoring and controlling heating, ventilation, and air conditioning equipment; monitoring of computer systems by remote access

Abstract

Provided is an air conditioner that keeps an indoor heat exchanger in a clean state and further carries out air-purification. An air conditioner (100) comprises: a compressor (11); an outdoor heat exchanger (12); an expansion valve (14); an indoor heat exchanger (15); an indoor fan (16); and a control unit that causes the indoor heat exchanger (15) to function as an evaporator and that carries out a process to freeze the indoor heat exchanger (15). The control unit carries out control such that the indoor fan (16) is driven during at least part of the period of the process and the temperature of the indoor heat exchanger (15) exceeds a predetermined value when the temperature is below the freezing point. The predetermined value is a temperature below the freezing point at which gaps between fins of the indoor heat exchanger (15) are not completely blocked with frost.

IPC Classes  ?

• F24F 11/48 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
• F24F 110/10 - Temperature

Abstract

Provided is an air conditioner which puts a heat exchanger into a clean state. This air conditioner (100) comprises a compressor (11), an outdoor heat exchanger (12), an expansion valve (14), and an indoor heat exchanger (15), and also comprises a control unit which performs a process to cause the heat exchanger, i.e., the indoor heat exchanger (15) or the outdoor heat exchanger (12), to function as an evaporator, and to freeze or condense the heat exchanger, wherein the control unit performs control to raise the temperature of the heat exchanger prior to the aforementioned process.

IPC Classes  ?

• F24F 11/48 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
• F24F 110/10 - Temperature
• F24F 110/12 - Temperature of the outside air
• F24F 13/22 - Means for preventing condensation or evacuating condensate
• F24F 1/0071 - Indoor units, e.g. fan coil units with means for purifying supplied air

Abstract

[Problem] To provide an air-conditioning device that achieves both increased reliability of a compressor and improved heating performance at the startup of heating operation. [Solution] A refrigeration cycle comprising an indoor unit 200 and an outdoor unit 100, wherein the outdoor unit 100 has: a refrigeration cycle that includes an expansion valve 110, a heat exchanger 114 and a compressor 108; and a control device 102 that controls the operation of the refrigeration cycle. The outdoor unit 100 is equipped with a pressure sensor 104 that measures the pressure of refrigerant flowing between the heat exchanger 114 and the compressor 108, and a temperature sensor 106 that measures the temperature of the refrigerant. When the refrigeration cycle starts heating operation, the control device 102 controls the opening of the expansion valve 110 on the basis of the degree of superheat of the refrigerant sucked into the compressor 108.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Goods & Services

Computer programs; computer software applications, downloadable; downloadable image files; personal digital assistants in the shape of a watch; smartphones; telecommunication machines and apparatus; electronic publications; downloadable music files; measuring or testing machines and instruments; monitoring apparatus, other than for medical purposes; transmitters [telecommunication]; software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet; wireless monitor and data transmitter for monitoring and reporting climate conditions; electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment. Air conditioners for industrial purposes; air-conditioning apparatus; heating installations; air-conditioning installations; household electrothermic appliances, other than for beauty or sanitary purposes; stoves for household purposes, non-electric; boilers, other than parts of non-electric prime movers or engines; gas water heaters for household purposes. Computer programming; technological advice relating to computers, automobiles and industrial machines; rental of computers; providing computer programs on data networks; software as a service [SaaS]; monitoring of computer systems by remote access; all the aforesaid relating to software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet, wireless monitor and data transmitter for monitoring and reporting climate conditions, and electrical controller for wirelessly controlling heating, ventilation, and air conditioning equipment.

Abstract

Provided is, e.g., a management apparatus configured to manage multiple types of instruments at low cost. A management apparatus includes a first communication unit connected to an air-conditioner via a first instrument network (ka), a second communication unit connected to instruments including a monitoring camera, a door lock mechanism, and an illuminating apparatus via a second instrument network, a third communication unit connectable to an upper apparatus, and a control unit configured to control the air-conditioner or the instruments based on a combination of the state of the air-conditioner received via the first communication unit and the states of the instruments received via the second communication unit.

IPC Classes  ?

• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Goods & Services

Air conditioners for household use; air conditioners for industrial purposes.

Abstract

Provided is a highly reliable scroll compressor, etc., having a simple configuration. This scroll compressor (100) comprises: a sealed container (1); an electric motor (4); a crankshaft (3); a fixed scroll (21); a turning scroll (22); an upper frame (23); and a lower frame (7). The lower frame (7) has a flange (73) in at least a part of the circumferential edge thereof. A part in the vicinity of the lower end of a cylindrical chamber (11) and a part in the vicinity of the edge of a bottom chamber (13) are fixed in a state of sandwiching the flange (73) therebetween. A lateral surface groove (73a) recessed radially inward is provided to the lateral surface of the flange (73) in the circumferential direction.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups

Goods & Services

Remote controls for air conditioners; remote controls; remote control apparatus. Air conditioners for household use; air conditioners for industrial purposes.

Goods & Services

Air conditioners for household use.

Goods & Services

Air conditioners for household use

Abstract

In some examples, a co-rotating scroll compressor includes a driver scroll having an axis aligned with the main axis and having a spiral involute, an idler scroll having an axis offset from the main axis and having a spiral involute intermeshed with the spiral involute of the driver scroll, and an Oldham coupling disposed between the driver scroll and idler scroll. The driver scroll may offset key slots so to engage with corresponding Oldham coupling keys. In another example, the Oldham coupling may offset driver scroll keys so to engage with corresponding key slots of the driver scroll.

IPC Classes  ?

• F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F03C 2/00 - Rotary-piston engines
• F03C 4/00 - Oscillating-piston engines
• F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• G11C 7/10 - Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
• H01L 27/108 - Dynamic random access memory structures
• G11C 11/409 - Read-write [R-W] circuits
• G11C 7/22 - Read-write [R-W] timing or clocking circuitsRead-write [R-W] control signal generators or management
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F01C 17/06 - Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints, or similar elements
• F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids

Abstract

b), a compression mechanism (2) configured to compress refrigerant in association with rotation of the crankshaft (3), a discharge pipe (Pb) configured to guide the refrigerant compressed in the compression mechanism (2) to the outside of the hermetic container (1), and a tubular oil ring (15) provided between the compression mechanism (2) and the electric motor (6). A cutout (s1) is, at a lower portion of the oil ring (15), provided as a first insertion portion into which the discharge pipe (Pb) is inserted.

IPC Classes  ?

• F04C 29/04 - HeatingCoolingHeat insulation
• F04B 39/02 - Lubrication
• F04B 39/04 - Measures to avoid lubricant contaminating the pumped fluid
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04C 29/02 - LubricationLubricant separation

Goods & Services

Air conditioners; air conditioners for household use; air conditioners for industrial purposes; parts and fittings for all the aforementioned goods

Goods & Services

Air conditioners; Air conditioners for household use; air conditioners for industrial purposes

Goods & Services

Remote controls for air conditioners Air conditioners for household use; air conditioners for industrial purposes

Goods & Services

Air conditioners for household use; air conditioners for industrial purposes

Abstract

[Problem] To provide an air conditioner that efficiently cleans a drain pan inside a casing. [Solution] The air conditioner is characterized by comprising an indoor heat exchanger 10 which exchanges heat with air, and a drain pan 30 which is provided below the indoor heat exchanger 10 and which receives drain water generated from the indoor heat exchanger 10, wherein the drain pan 30 has a heat insulating material 31 on a surface on the heat exchanger 10 side, and a metal member 32 is disposed in at least a part of the surface of the heat insulating material 31.

IPC Classes  ?

• F24F 13/22 - Means for preventing condensation or evacuating condensate

Goods & Services

Air conditioners; air conditioners for household use; air conditioners for industrial purposes.

Goods & Services

Air conditioners; air conditioners for household use; air conditioners for industrial purposes; parts and fittings for all the aforementioned goods.

Abstract

Provided is an outdoor unit for an air conditioning device, with which: pressure loss during use with an evaporator can be reduced; and high heating capability and improvements in cooling performance can be realized at low cost even under the influence of a liquid head caused by the wind speed distribution of a heat exchanger and the height of the heat exchanger.　The heat exchanger has a height of at least 1 meter and is constituted by three columns of heat exchange units that are arranged along the direction in which air flows. A first column heat exchange unit, which is on the upwind side among the heat exchange units, is disposed such that a U-shaped heat transfer pipe overlaps in a stage direction. Two columns on the downwind side are disposed such that the U-shaped heat transfer pipe straddles a second column heat exchange unit and a third column heat exchange unit. The third column heat exchange unit of an upper-side heat exchanger is connected to a gas header. The number of cooling paths connected to the gas header is greater than half the total number of stages of the heat exchanger, and is the same number of stages as the number of cooling paths connected to the gas header. The first column heat exchange unit of a lower-side heat exchanger is connected to a liquid coolant distributor. The U-shaped heat transfer pipe of the third column heat exchange unit of the lower-side heat exchanger and the U-shaped heat transfer pipe of the first column heat exchange unit of the upper-side heat exchanger are connected via a path connection pipe.

IPC Classes  ?

• F24F 1/14 - Heat exchangers specially adapted for separate outdoor units

Abstract

Provided is an air conditioner capable of outside air defrosting operation with outside air and maintenance of heating capacity even if the temperature of the outside air is lower than the freezing point.　In the defrosting operation mode in the heating operation, outdoor blower fans (22, 23) blow air to both of divided heat exchangers (20, 21). Furthermore, if the temperature of outdoor air is lower than the freezing point, an expansion valve (15, 16) connected to one of the divided heat exchangers (20, 21) is fully closed, and only in the heat exchanger with the expansion valve fully closed, defrosting is performed by sublimation action by outdoor air. This enables defrosting using outdoor air while continuing the heating operation even if the temperature of the outdoor air is lower than the freezing point.

IPC Classes  ?

• F25B 47/02 - Defrosting cycles

Abstract

Provided is a scroll compressor, etc., having high performance and reliability. The scroll compressor comprises a closed container, a fixed scroll (22), an orbiting scroll (23), a frame (21), an electric motor, and a shaft (3). Furthermore, the scroll compressor comprises a main bearing (11) installed in a shaft insertion hole (hf), an orbiting bearing (12) installed on an orbiting shaft (23c), a slide bush (13) installed in an eccentric hole (he) on the radially outer side of the orbiting bearing (12), and a ring (14) that closes an annular gap (g1) between an upper-end part (3b) of the shaft (3) and the slide bush (13) from above. Axial-direction installation areas (Q1, Q2) of the main bearing (11) and the orbiting bearing (12) overlap at least partially.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

A scroll compressor includes a hermetic container, a fixed scroll, a swing scroll, a frame, an electric motor, and a shaft. A first groove and a second groove are provided outside a fixed wrap in a radial direction at an end plate surface of the fixed scroll. An oil supply hole for guiding lubricant oil from a through-hole opens at an end plate surface of the swing scroll. A single opening of the oil supply hole alternately communicates with the first groove and the second groove along with swing of the swing scroll.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/02 - LubricationLubricant separation
• F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids

Goods & Services

(1) Air conditioners

Goods & Services

Air conditioning apparatus, and parts and fittings thereof; Air conditioners for industrial purposes; air-conditioning apparatus; air-conditioning installations; Air conditioners.

Abstract

[Problem] To restrict not only an upper limit value but also a lower limit value of the power consumption of an air conditioner. [Solution] This air conditioner comprises a compressor, an outdoor heat exchanger, an expansion mechanism, an indoor heat exchanger, and an operation control unit for controlling the operation frequency of the compressor so that the power consumption of the air conditioner or the compressor reaches a value higher than a lower limit setting value.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F24F 11/47 - Responding to energy costs

Abstract

The purpose of the present invention is to provide a system and method with which it is possible to minimize a temperature decrease during a dehumidification operation by each indoor unit, and in which the dehumidification capability does not decrease during low load. In an air-conditioning system: an indoor unit includes an indoor heat exchanger, a temperature detection means for detecting the indoor temperature, and a humidity detection means for detecting the indoor humidity; and an outdoor unit includes an outdoor heat exchanger and a compressor for circulating a refrigerant between the outdoor unit and the indoor unit. The air-conditioning system is provided with: a valve provided between the outdoor heat exchanger and the indoor heat exchanger; a rotation speed control means 32 for controlling the rotation speed of the compressor according to the temperature detected by the temperature detection means; and an opening degree control means 33 for controlling the opening degree of the valve according to the humidity detected by the humidity detection means.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
• F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits

Abstract

Provided are a system and a method which can prevent or reduce an intermittent operation and maintain comfort. This air conditioning system includes an indoor unit and an outdoor unit. The indoor unit includes: a heat exchanger; an indoor temperature detection means for detecting an indoor temperature; and a valve for adjusting the flow rate of a refrigerant flowing in a refrigeration cycle. The outdoor unit includes: a heat exchanger; a compressor; a frequency detection means for detecting the operation frequency of the compressor; and a valve for adjusting the flow rate of the refrigerant flowing in the refrigeration cycle. The air conditioning system further includes a control means for controlling the opening degree of the valve of the indoor unit depending on the indoor temperature detected by the indoor temperature detection means, the amount of change in the indoor temperature over a predetermined period of time, and the operation frequency detected by the frequency detection means.

IPC Classes  ?

• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

[Problem] An objective of the present invention is to distribute a refrigerant at an appropriate liquid refrigerant flow ratio. [Solution] The present invention is provided with a heat exchanger having a plurality of flow paths for a refrigerant, and a distributor which distributes the refrigerant to the flow paths of the heat exchanger, wherein: the distributor has an inflow pipe through which the refrigerant flows into a housing of the distributor, and a plurality of outflow pipes through which the refrigerant in the housing flows out; and each of the plurality of outflow pipes has a first pipe, which has a first opening in which the proportions of a gas refrigerant and a liquid refrigerant flowing out therefrom changes in accordance with the height of a gas-liquid interface in the housing, a second pipe which extends from inside the housing to outside the housing, and a connection section which connects the first pipe and the second pipe.

IPC Classes  ?

• F25B 41/00 - Fluid-circulation arrangements

Abstract

Provided is a highly reliable air conditioner that produces a sanitary state in an indoor heat exchanger. An air conditioner (100) is equipped with a refrigerant circuit (Q), and is equipped with a bypass pipe (W) for guiding a portion of the refrigerant condensed in an outdoor heat exchanger (2) to the suction side of a compressor (1), a bypass expansion valve (7) provided in the bypass pipe (W), and a control unit. When an indoor heat exchanger (10) is in the process of freezing or condensing, the control unit controls an indoor expansion valve (12) on the basis of the temperature of the indoor heat exchanger (10), and controls the bypass expansion valve (7) on the basis of the discharge temperature of the compressor (1).

IPC Classes  ?

• F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F24F 11/48 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
• F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves

Abstract

Provided is a highly reliable air conditioner that keeps an outdoor heat exchanger clean. A control unit (30) for an air conditioner (100) performs, as first control after processing to cause an outdoor heat exchanger (13) to function as an evaporator to freeze or condense the outdoor heat exchanger (13), control to increase the rotational speed of an outdoor fan (14) relative to that during the above processing while driving a compressor (11) or while bringing the compressor (11) into a stopped state, control to reduce the rotational speed of the compressor (11) relative to that during the above processing while driving the compressor (11), or control to increase the opening degree of an expansion valve (15) relative to that during the above processing while driving the compressor (11).

IPC Classes  ?

• F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
• F24F 11/41 - DefrostingPreventing freezing
• F24F 11/871 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans

Abstract

An air conditioner (A) comprises a room-temperature-sensing means (51) that senses the temperature of a room, a person-sensing sensor (110) that senses a person within the room, and a control unit (60) having an automatic turn-off function for stopping operation when no persons can be detected within a prescribed period of time by the person-sensing sensor (110). The control unit (60) disables the automatic turn-off function when the room temperature is outside of a prescribed automatic turn-off permission range (is within an automatic turn-off prohibition region) while the automatic turn-off function is enabled.

IPC Classes  ?

• F24F 11/49 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
• F24F 11/65 - Electronic processing for selecting an operating mode
• F24F 110/10 - Temperature
• F24F 120/10 - Occupancy