JPS5828253U

JPS5828253U - Heat pump air conditioning system

Info

Publication number: JPS5828253U
Application number: JP12394481U
Authority: JP
Inventors: 向阪　健治; 哲夫田口
Original assignee: ダイキン工業株式会社
Priority date: 1981-08-20
Filing date: 1981-08-20
Publication date: 1983-02-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ないし第３図は本考案の実施例を示し、第１図は
第１実施例を示す冷媒配管系統図、第２図は第２★施例
を示す冷媒配管系統図、第３図は第２実施例のガスイン
ジェクション時の作動説明図、第４図は提案例を示す冷
媒配管系統図、第５、　図は従来例を示す冷媒配管系統
図である。１・・・・・・圧縮機、１ａ・・・・・・吐出ポート、
１ｂ・・・・・・吸入ポート、２・・・・・・四路切換
弁、３・・１室内熱交換器、４ａ、　　４ａ’−−−−
−−第１膨張機構、４ｂ、　　４ｂ′・・・・・・第２
膨張機構、４　ｃ　／・・・・・・第３膨張機構、　　
５・・・・・・室外熱交換器、７．７’、７″・・・・
・・インジ　　・エクションポート、８・・・・・・バ
イパスポート、９・・・・・・気液分離器、１０・・・
・・・インジェクション通路、１１・・・・・・電磁弁
、１２・・・・・・バイパス通路、１３・・・・・・バ
イパス信号管路、１４・・・・・・制御弁、１５・・・
・・・背圧室、９′・・・・・・第１気液分離器、９″
・・曲第２気液分離器、１０′・・・・・・第１インジ
ェクション通路、１０＃・・・・・・第２インジェクシ
ョン通路、１１′・・・・・・第１電磁弁、１１″・・
・・・・第２電磁弁。Figures 1 to 3 show embodiments of the present invention. Figure 1 is a refrigerant piping system diagram showing the first embodiment, Figure 2 is a refrigerant piping system diagram showing the second embodiment, and Figure 3 is a refrigerant piping system diagram showing the second embodiment. 4 is a refrigerant piping system diagram showing a proposed example, and FIG. 5 is a refrigerant piping system diagram showing a conventional example. 1...Compressor, 1a...Discharge port,
1b...Suction port, 2...4-way switching valve, 3...1 indoor heat exchanger, 4a, 4a'----
--First expansion mechanism, 4b, 4b'...Second
Expansion mechanism, 4 c /...Third expansion mechanism,
5...Outdoor heat exchanger, 7.7', 7''...
・・Expression port, 8・・Bypass port, 9・・Gas liquid separator, 10・・・・
... Injection passage, 11 ... Solenoid valve, 12 ... Bypass passage, 13 ... Bypass signal pipe line, 14 ... Control valve, 15.・・・
...Back pressure chamber, 9'...First gas-liquid separator, 9''
...Second gas-liquid separator, 10'...First injection passage, 10#...Second injection passage, 11'...First solenoid valve, 11 ″・・
...Second solenoid valve.

Claims

[Scope of utility model registration request]

A compressor 1, a four-way switching valve 2, an indoor heat exchanger 3, and a plurality of divided expansion mechanisms 4a, 4b...
In a heat pump air-conditioning system equipped with an outdoor heat exchanger 5, the suction port 1b and the discharge port 1 of the compressor 1
an injection port 7 and a bypass port 8 provided between each of the expansion mechanisms 4a, 4b.
...a gas-liquid separator 9 interposed therebetween, an injection passage 10 that communicates the gas region of the gas-liquid separator 9 with the injection port 7, and an injection passage 10 interposed in the injection passage 10. A solenoid valve 11, a bypass passage 12 that communicates the bypass port 8 and the suction port 1b of the compressor 1, one end of which is connected between the indoor heat exchanger 3 and the four-way switching valve 2, and the other end of which is connected between the indoor heat exchanger 3 and the four-way switching valve 2. A bypass signal line 13 connected in the middle of the bypass passage 12 is provided at the connection between the bypass signal line 13 and the bypass passage 12, and opens the bypass passage 12 when the bypass signal is at low pressure, and when the bypass signal is at high pressure. and a control valve 14 that closes the bypass passage 12 during heating operation.During heating operation, the solenoid valve 11 is opened while the control valve 14 is closed to stop bypassing the suction gas of the compressor 1 to the suction port 1b. The intermediate pressure gas refrigerant of the gas-liquid separator 9 is injected into the compressor 1 from the injection port 7 to make the heating capacity the rated heating capacity, while the solenoid valve 11 is closed. The heating capacity can be switched to two stages so that the heating capacity is reduced by stopping the gas injection of the control valve 14 during cooling operation.
While a part of the suction gas of the compressor 1 is bypassed to the suction port 1b of the compressor 1 by the opening operation of the solenoid valve 11, gas is injected into the compressor 1 by the opening operation of the solenoid valve 11 to increase the cooling capacity. A heat pump characterized in that the cooling capacity can be switched to two stages so that the cooling capacity is maintained at the rated cooling capacity and the cooling capacity is reduced by stopping gas injection to the compressor 1 by closing the electromagnetic valve 11. formula% formula%