JPS6035171U

JPS6035171U - Air conditioning equipment

Info

Publication number: JPS6035171U
Application number: JP12796483U
Authority: JP
Inventors: 横山　誠志
Original assignee: 三菱電機株式会社
Priority date: 1983-08-17
Filing date: 1983-08-17
Publication date: 1985-03-11

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 the drawing]

第１図は従来の冷暖房装置の冷媒回路構成を示す系統図
、第２図は従来の差圧式四方切換弁の動作を示す電気回
路図、第３図はこの考案の一実施例による冷暖房装置の
冷媒回路構成を示す系統図、第４図は、この考案の一実
施例による差圧式四方切換弁の動作を示す電気回路図、
第５図は、従来の冷暖房装置の差圧式四方切換弁の動作
にともなう冷媒圧力変化線図、第６図は、この考案の一
実施例によるバイパス用電磁弁の動作および差圧式四方
切換弁の動作にともなう冷媒圧力変化線図である。１・・・冷媒圧縮機、２・・・差圧式四方切換弁Ａ、６
・・・アキュームレータ、１０・・・冷房−暖房切換ス
イッチ、１１．１３・・・電磁継電器コイル、１２・・
・差圧式四方切換弁用電磁コイル、１４・・・除霜制御
用サーモスタット、１５・・・差圧検出スイッチ、１５
ｂ・・・差圧検出スイッチの接点、１６・・・バイパス
用電磁弁。なお、図中、同一符号は同一または相当部分
を示す。Fig. 1 is a system diagram showing the refrigerant circuit configuration of a conventional air conditioning system, Fig. 2 is an electric circuit diagram showing the operation of a conventional differential pressure type four-way switching valve, and Fig. 3 is an electrical circuit diagram showing the operation of a conventional differential pressure type four-way switching valve. FIG. 4 is a system diagram showing the refrigerant circuit configuration; FIG. 4 is an electric circuit diagram showing the operation of a differential pressure type four-way switching valve according to an embodiment of the invention;
Fig. 5 is a refrigerant pressure change diagram associated with the operation of a differential pressure type four-way switching valve in a conventional air conditioning system, and Fig. 6 is a diagram showing the operation of a bypass solenoid valve according to an embodiment of this invention and the differential pressure type four-way switching valve. It is a refrigerant pressure change line diagram accompanying operation. 1... Refrigerant compressor, 2... Differential pressure type four-way switching valve A, 6
... Accumulator, 10... Cooling-heating changeover switch, 11.13... Electromagnetic relay coil, 12...
・Electromagnetic coil for differential pressure type four-way switching valve, 14... Thermostat for defrosting control, 15... Differential pressure detection switch, 15
b...Contact of differential pressure detection switch, 16...Solenoid valve for bypass. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

In an air conditioning system equipped with a differential pressure four-way switching valve that forms a refrigerant circuit into cooling mode, heating mode, and defrosting mode,
A bypass solenoid valve that connects the low-pressure part and high-pressure part of the refrigerant circuit, a differential pressure detection switch installed in parallel with this solenoid valve, and a differential pressure four-way switching valve that connects the bypass solenoid valve. During the process of operating the refrigerant circuit and balancing the pressure between the low-pressure part and the high-pressure part, the differential pressure detection switch detects the differential pressure, and when a predetermined differential pressure value is reached, the differential pressure type four-way switching valve is operated. 1. A heating and cooling device characterized in that a switching control circuit is provided.