JPS58183466U

JPS58183466U - Heat pump air conditioning system

Info

Publication number: JPS58183466U
Application number: JP7965382U
Authority: JP
Inventors: 哲夫田口
Original assignee: ダイキン工業株式会社
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1983-12-07

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す冷媒配管系統図、第２図
は従来例を示す冷媒配管系統図である。１・・・圧縮機、１ａ・・・吸入ポート、１ｂ・・・吐
出ポート、ＩＣ・・・第１中間ポート、１ｄ・・・第２
中間ポート、２・・・四路切換弁、３・・・室内熱交換
器、４・・・膨張機構、５・・・室外熱交換器、７・・
・第１制御弁、８・・・第１バイパス通路、９・・・パ
イロット通路、１０・・・電磁弁、１１・・・第２バイ
パス通路、１２・・・第２制御弁。FIG. 1 is a refrigerant piping system diagram showing an embodiment of the present invention, and FIG. 2 is a refrigerant piping system diagram showing a conventional example. 1...Compressor, 1a...Suction port, 1b...Discharge port, IC...First intermediate port, 1d...Second
Intermediate port, 2... Four-way switching valve, 3... Indoor heat exchanger, 4... Expansion mechanism, 5... Outdoor heat exchanger, 7...
- First control valve, 8... First bypass passage, 9... Pilot passage, 10... Solenoid valve, 11... Second bypass passage, 12... Second control valve.

Claims

[Scope of utility model registration request]

In a heat pump air-conditioning system including a compressor 1, a four-way switching valve 2, an indoor heat exchanger 3, an expansion mechanism 4, and an outdoor heat exchanger 5, the suction port 1a and the discharge port 1b of the compressor 1 A first intermediate port 1C with a large gas bypass amount and a second intermediate port 1d with a small gas bypass amount are provided between the first intermediate port IC and the suction port 1a side of the compressor 1. 1 bypass passage 8,
a pilot passage 9 that communicates the first bypass passage 8 with the discharge port 1b side of the compressor 1; a solenoid valve 10 interposed in the pilot passage 9; and a solenoid valve 10 provided at the first intermediate port 1C; A first control valve 7 that is normally open and closes the first bypass passage 8 when the pressure in the pilot passage 9 is higher than the pressure in the first intermediate port 1C; A second bypass passage 11 is provided in the second intermediate port 1d and communicates with the second intermediate port 1d, and when the pressure in the second bypass passage 11 is higher than the pressure in the second intermediate port 1d, the second bypass passage 11 is A normally closed second control valve 12 is provided, and during cooling operation, a part of the intake gas of the compressor 1 is supplied to the compressor 1 from the first intermediate port IC and the second intermediate port 1d or only from the second intermediate port 1d.
By bypassing the gas inlet port 1a, the cooling capacity is switched to two stages, while during heating operation, the gas bypass from the first intermediate port 1C and the second intermediate port 1d is stopped or from the first intermediate port IC. A heat pump air-conditioning and heating system characterized by switching heating capacity into two stages using a gas bypass.