JPS6285877U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案の空気調和機の一実施例を示す冷
媒回路図である。 ３……利用側熱交換器、９……圧縮機、１０…
…四方弁、１１……熱源側熱交換器、１３……減
圧装置、１５……第１バイパス管、２０……第１
開閉弁、２４……第２バイパス管、２８……第２
開閉弁。 The drawing is a refrigerant circuit diagram showing an embodiment of the air conditioner of the present invention. 3... User-side heat exchanger, 9... Compressor, 10...
... Four-way valve, 11 ... Heat source side heat exchanger, 13 ... Pressure reducing device, 15 ... First bypass pipe, 20 ... First
On-off valve, 24...second bypass pipe, 28...second
Open/close valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ヒートポンプ式冷凍サイクルを有する空気調和
機において、一端を四方弁と利用側熱交換器との
間に、他端を減圧装置と熱源側熱交換器との間に
つないだ第１バイパス管を設け、この第１バイパ
ス管には除霜運転時に圧縮機から吐出された冷媒
を前記熱源側熱交換器へ導びく第１開閉弁を配設
すると共に、一端を前記利用側熱交換器と前記減
圧装置との間に、他端を前記圧縮機の吸込側配管
につないだ第２バイパス管を設け、この第２バイ
パス管には前記利用側熱交換器の温度が設定値よ
りも低くなつた時に開放されてこの利用側熱交換
器に流れ込んだ冷媒を圧縮機へ戻す第２開閉弁を
配設したことを特徴とする空気調和機。 In an air conditioner having a heat pump type refrigeration cycle, a first bypass pipe is provided with one end connected between the four-way valve and the usage side heat exchanger and the other end connected between the pressure reducing device and the heat source side heat exchanger, This first bypass pipe is provided with a first on-off valve that guides the refrigerant discharged from the compressor during defrosting operation to the heat source side heat exchanger, and one end is connected to the user side heat exchanger and the pressure reducing device. A second bypass pipe whose other end is connected to the suction side piping of the compressor is provided between the two, and the second bypass pipe is configured to open when the temperature of the user side heat exchanger becomes lower than a set value. An air conditioner characterized in that a second on-off valve is provided for returning the refrigerant that has flowed into the user-side heat exchanger to the compressor.