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Matches 1 - 50 out of 9,920

Document Document Title
WO/2017/042912A1
This air conditioner is provided with: a switching valve provided between an expansion valve and an outdoor heat exchanger; and a bypass circuit of which a first end part is connected to refrigerant piping for connecting a compressor and...  
WO/2017/037891A1
A refrigeration cycle device provided with a compressor, a flow path switching valve, a usage-side heat exchanger, a first expansion valve, a second expansion valve, and a heat-source-side heat exchanger, wherein: the refrigeration cycle...  
WO/2017/037747A1
Method for controlling defrosting of the outer exchanger of a heat pump machine, comprising the steps of: defining in the outer air temperature/evaporation temperature plane three zones; acquiring the outer air temperature and the evapor...  
WO/2017/037771A1
A refrigeration cycle device configured such that, when starting a defrosting mode, a first depressurization device adjusts the flow rate of refrigerant so as to bring the superheat degree of the refrigerant on the intake side of a compr...  
WO/2017/037189A1
A system (10, 70) for deicing the external evaporator in a heat pump system, characterized in that it comprises: - a refrigeration circuit (20, 80), connected in input and in output to the heat pump system and adapted to convey coolant g...  
WO/2017/034314A1
The present invention discloses a defroster comprising: a heating unit having a heater case arranged vertically along an up-down direction on the outside of an evaporator, and a heater disposed vertically in the up-down direction inside ...  
WO/2017/034170A1
Disclosed is a defrosting apparatus that comprises: a heating unit provided below an evaporator; and a heat pipe connected to the inlet and outlet of the heating unit and having at least a part disposed adjacent to a cooling pipe of the ...  
WO/2017/029695A1
An air-conditioning device which melts a large amount of frost deposited thereon while maintaining the proper operation of a compressor by setting the defrosting operation time according to the low pressure of the compressor. This air-co...  
WO/2017/030076A1
The present invention addresses the problem of providing an air conditioner can take measures against impact sound when switching a four-way switching valve and minimize decreases in heating performance prior to transitioning to defrosti...  
WO/2017/022512A1
[Problem] To make it possible to delay frost accumulation on a heat sink with as little change as possible to the action of a decompression unit, so as not to adversely affect the coefficient of performance COP of a heat pump cycle. [Sol...  
WO/2017/022076A1
A refrigeration apparatus is provided with a heat source unit (1), a cooling unit (2), a low-pressure-gas pipe (5), and a bypass circuit (BC). Accommodated in the heat source unit (1) is a compressor (7), a condenser (8), and a pipe (1a)...  
WO/2017/018272A1
Provided is an exterior unit forming a portion of a refrigerating cycle device in which a refrigerant circulates and having an opening for maintenance, said exterior unit being provided with: an opening/closing panel that is attached to ...  
WO/2017/017813A1
Provided is an exterior unit forming a portion of a refrigerating cycle device in which a refrigerant circulates and having an opening for maintenance, said exterior unit being provided with: an opening/closing panel that is attached to ...  
WO2017010239A1
This refrigeration cycle device is provided with: a compressor (11) that suctions and discharges a coolant; an air-coolant heat exchanger (12) that exchanges heat between air and the coolant; an expansion valve (15) that reduces the pres...  
WO/2017/006596A1
Provided is a refrigeration cycle device capable of suppressing a reduction in heating capacity during simultaneous heating/defrosting operation. A control device selectively performs a first simultaneous heating/defrosting operation and...  
WO/2017/004416A1
A system and a method are provided including a system controller for a refrigeration or HVAC system having a compressor rack with a compressor and a condensing unit with a condenser fan. The system controller monitors and controls operat...  
WO/2016/206816A1
In order to deice a heat exchanger in evaporator operation of a cooling system (1), which heat exchanger was iced at low evaporation temperatures, wherein refrigerant (30) can flow or flows through the heat exchanger in evaporator operat...  
WO/2016/194189A1
Provided is a cooling apparatus, with a hot gas defrosting system, allowing defrosting time to be shortened and residual frost to be prevented. The cooling apparatus (100) according to the present invention comprises: a first hot gas cir...  
WO/2016/189739A1
In this air conditioning device, a heat source machine and an indoor machine including an indoor-side flow rate control device and an indoor-side heat exchanger are coupled to one another by means of refrigerant piping. The heat source m...  
WO/2016/187923A1
A defrosting control method for an air conditioner, comprising the following steps: when the air conditioner enters a defrosting mode, acquiring outdoor environment temperature and outdoor environment humidity; judging whether the outdoo...  
WO/2016/181105A1
A condensate valve is arranged at the lower end of a condensate conduit forming part of a cool gas gravity circuit for recirculating refrigerant between a heat store and an evaporator during a defrost cycle. A valve assembly is arranged ...  
WO/2016/166801A1
This air conditioning device 1 has the following two possible operations: a first parallel heating and defrosting operation in which hot gas discharged from a compressor 2 is supplied to a first heat source-side heat exchanger 6a by clos...  
WO/2016/166873A1
This heat pump system (300) is provided with: a refrigerant circuit (15) which has a refrigerant flow passage through which a refrigerant flows and a heating medium flow passage through which a heating medium flows, and in which the refr...  
WO/2016/157774A1
This control device (4) detects, in a refrigerant cycle device (2, 102) that has a plurality of evaporators (24A, 24B, 24C, 24D), a frost state or a pre-frost state in the evaporators. The control device controls the temperature of a pre...  
WO/2016/142535A1
The invention relates to a method for reducing the noise perceived during the defrosting of the external heat exchanger (5) of a heat pump (1), said heat pump (1) comprising a compressor (2), a four-way valve (6), an external heat exchan...  
WO/2016/139783A1
Provided is a refrigeration cycle device for suppressing fluid backflow to a compressor at the time of a hot gas reverse-type defrost operation. This refrigeration cycle device (1) executes a hot gas reverse-type defrost operation and in...  
WO/2016/139388A1
The invention relates to a cleaning device for cleaning the coils of heat pumps and similar devices. The cleaning device comprises a compressor (1), a water tank (2) and a detergent container (3). Compressed air, water and detergent are ...  
WO/2016/136128A1
A refrigerating device (10) is provided with a controller (120) that performs control so as to change defrost termination conditions or defrost capability in accordance with the time of duration of a stable temperature state in which the...  
WO/2016/138382A1
A method of controlling a refrigeration system having a compressor (22), a condenser (24), an evaporator (28), and a variable speed condenser fan (44) is provided. The method includes determining if a change in an ambient temperature or ...  
WO/2016/125647A1
A control device (216) is provided with a control unit (217). When operating a cooling cycle for cooling water using a water heat exchanger (201), the control unit controls the differential pressure determined by subtracting the pressure...  
WO/2016/121068A1
A refrigeration cycle device equipped with: a refrigerant circuit that includes a compressor, a flow path switching device, a heat-source-side heat exchanger, a first throttle device, and a usage-side heat exchanger; and a liquid backflo...  
WO/2016/121103A1
A refrigeration cycle device 1 equipped with a circuit 3 that includes a compressor 5, an outdoor heat exchanger 100, an expansion unit 7, and an indoor heat exchanger 9. The outdoor heat exchanger 100 is equipped with a fan 100a, an upw...  
WO/2016/117113A1
An air conditioner is equipped with a control unit that controls a refrigerant circuit switching device such that, during a first control period after a defrosting operation has been stopped, the rotational speed of a compressor is set l...  
WO/2016/113868A1
A refrigeration cycle device 100 provided with refrigerant piping 90 configured so that, in heating operation, a refrigerant flows through a compressor 1, a four-way valve 2, an indoor heat exchanger 3, a first expansion valve 4, a secon...  
WO/2016/113850A1
Provided is an air-conditioning device that can perform defrosting efficiently without stopping heating performed by an indoor unit. This air-conditioning device is equipped with: a primary circuit 50, which circulates a refrigerant, and...  
WO/2016/113851A1
An air conditioning device 100 comprises: a selecting means 31 for selecting a reverse defrost operating mode to stop heating operations and defrost all parallel heat exchangers 50 or a simultaneous heat and defrost operating mode to def...  
WO/2016/113912A1
Provided is a refrigerating and air conditioning device with which a rise in the inside temperature during a defrosting operation can be minimized. This refrigerating and air conditioning device is provided with: a refrigeration cycle in...  
WO/2016/111003A1
A heat storage unit 300 is provided with: a first connecting section 320; a second connecting section 322; a third connecting section 324; a fourth connecting section 326; a heat storage section 30 having a heat storage material 34 that ...  
WO/2016/107164A1
Disclosed is a main engine outer casing structure of an air cooled heat pump unit, which belongs to the technical field of heat pumps. The main engine outer casing structure comprises a finned heat exchanger containing chamber (14) and a...  
WO/2016/103552A1
In the present invention, the load on a compressor during reverse-cycle operation is reduced. When reverse-cycle operation criteria are met, a cycle control unit (32a) causes an outdoor heat exchanger (23) to function as a condenser and ...  
WO/2016/104320A1
The vehicle air conditioning device according to the present invention is a heat-pump-type vehicle air conditioning device provided with an outdoor heat exchanger for exchanging heat between outside air and an internally flowing refriger...  
WO/2016/098195A1
An air conditioning device 1 comprises at least two outdoor units mounted with a compressor 101 and an outdoor heat exchanger 103, and at least one indoor unit 200 having an indoor throttling device and an indoor heat exchanger 201. Whil...  
WO/2016/089778A1
An additive heat transfer unit (AHTU) can be part of or added to an air source heat pump HVAC system. The heat pump system includes a compressor (2), an expansion valve (6), first and second air source heat exchangers (22), and a reversi...  
WO/2016/088379A1
A refrigeration device (10) wherein: a defrosting operation control unit (106) is provided, said defrosting operation control unit beginning a defrosting operation when it is determined that the temperature difference (SS-EOS) between th...  
WO/2016/083858A1
A heat pump system includes a refrigerant circuit, at least one compressor, an evaporator, and a controller programmed to defrost the evaporator in a defrost mode, wherein in the defrost mode the controller is programmed to monitor the e...  
WO/2016/084139A1
An air conditioner 1 comprises an outdoor heat exchanger 14, an outdoor fan 12 blowing air to the outdoor heat exchanger, an outdoor fan motor 20 to drive the outdoor fan, an outdoor fan inverter 21 to drive the outdoor fan motor, and a ...  
WO/2016/084796A1
The purpose of the present invention is to provide an inexpensive air-conditioning machine with which it is possible to perform mild heating suitable for climates in which heating is needed for only brief periods. In this air-conditionin...  
WO/2016/084341A1
The purpose of the present invention is to reduce the time taken from the startup of a device until the completion of frost removal, and to prevent a large amount of liquid refrigerant from entering a compressor. Provided is a heat pump ...  
WO/2016/064200A3
A defrosting device includes a heating unit filled with a working fluid and including an active heating part heated to a first temperature that can evaporate the working fluid, and a passive heating part positioned at a rear side of the ...  
WO/2016/064200A2
A defrosting device includes a heating unit filled with a working fluid and including an active heating part heated to a first temperature that can evaporate the working fluid, and a passive heating part positioned at a rear side of the ...  

Matches 1 - 50 out of 9,920