Register WIPO Patent
Application Number JP2020013216
Publication Number 2021/192074
Status In Force
Filing Date 2020-03-25
Publication Date 2021-09-30
  • Ohata Ryosuke
  • Arai Yuki


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 outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves