JPS58179215U

JPS58179215U - Refrigeration cycle for car air conditioner

Info

Publication number: JPS58179215U
Application number: JP7627382U
Authority: JP
Inventors: 達崎　透; 金本　一夫
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1982-05-26
Filing date: 1982-05-26
Publication date: 1983-11-30

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図は１、従来の基本的冷凍サイクツし構成図、第２
図は、熱線式流量センサを具備した冷凍サイクル構成図
、第３図は、低圧側配管の一部に熱線式流量センサを配
設した構造断面図、第４図は、本考案の一実施例説明図
、第５図は、電流Ｉと質量流量ρ。の関係図である。１・・・冷媒圧縮機、２・・・コンデンサ、３・・・リ
キッドタンク、４・・・膨張弁、５・・・エバポレータ
、６・・・感熱筒、７・・・サーミスタ、８・・・電磁
クラッチ、９・・・Ｌ、Ｐ、Ｃ，１０・・・冷媒流量セ
ンサ、１１・・・Ｃ，Ｐ、ＬＪ、１２・・・アダプタ、
１３・・・メイン通路、　　。１４・・・サブ通路、Ｐ・・・低圧配管、Ｑ・・・ホッ
トワイヤ、Ｒ・・・コールドワイヤ。Figure 1 shows 1. A diagram of the basic refrigeration system used in the past, and 2.
The figure shows a configuration diagram of a refrigeration cycle equipped with a hot-wire type flow sensor, Figure 3 is a cross-sectional view of a structure in which a hot-wire type flow rate sensor is installed in a part of the low-pressure side piping, and Figure 4 is an embodiment of the present invention. The explanatory diagram, FIG. 5, shows the current I and the mass flow rate ρ. It is a relationship diagram. DESCRIPTION OF SYMBOLS 1... Refrigerant compressor, 2... Condenser, 3... Liquid tank, 4... Expansion valve, 5... Evaporator, 6... Heat sensitive tube, 7... Thermistor, 8...・Electromagnetic clutch, 9...L, P, C, 10...refrigerant flow rate sensor, 11...C, P, LJ, 12...adapter,
13...Main passage. 14...Sub passage, P...Low pressure piping, Q...Hot wire, R...Cold wire.

Claims

[Scope of Claim for Utility Model Registration] 1. In a refrigeration cycle for a car air conditioner in which a refrigerant compressor, a condenser, a liquefier, an expansion valve, an evaporator, etc. are connected by piping, the refrigerant compressor is connected from the evaporator outlet side. A hot-wire flow rate sensor is installed in a part of the low-pressure side piping up to the inlet, and the change in the mass flow rate of the refrigerant is converted into an electrical signal by the hot-wire flow rate sensor, and the refrigerant compressor is activated in accordance with the electrical signal. A refrigeration cycle for a car air conditioner, characterized in that its operation is controlled. 2 In the refrigeration cycle for a car air conditioner described in paragraph 1, the mass flow rate of the refrigerant detected by the thermal linear flow sensor;
It is characterized by comparing and determining the heat load in the vehicle interior detected by a thermal resistor disposed near the evaporator, and controlling the suction flow rate or rotation speed of the refrigerant compressor by an electric signal according to the comparison and determination result. A refrigeration cycle for car air conditioners.