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Control valve for swash-plate type variable displacement compressor

A technology of variable displacement and control valve, used in pump control, liquid variable capacity machinery, mechanical equipment, etc., to achieve the effect of improving refrigeration efficiency, increasing displacement, and speeding up pressure relief

Inactive Publication Date: 2017-06-09
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, subject to the size of the orifice 2', the above process usually lasts for several minutes or even longer

Method used

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  • Control valve for swash-plate type variable displacement compressor
  • Control valve for swash-plate type variable displacement compressor
  • Control valve for swash-plate type variable displacement compressor

Examples

Experimental program
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Embodiment Construction

[0043] The core of the present invention is to provide a control valve for a swash plate type variable displacement compressor, which can make the variable displacement compressor reach the maximum working displacement faster and improve the comfort of the driver and passengers.

[0044] Hereinafter, in conjunction with the accompanying drawings, the control valve for the swash plate type variable displacement compressor provided by the present invention will be specifically introduced, so that those skilled in the art can accurately understand the technical solution of the present invention.

[0045] The terms “first” and “second” mentioned herein are only used to distinguish multiple components with the same or similar structure, or multiple structures or values ​​with the same or similar structure, and do not imply any special restriction on the order.

[0046] The one end, the other end, the first end, the second end, etc. described herein are all referred to the axial direction o...

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PUM

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Abstract

The invention provides a control valve for a swash-plate type variable displacement compressor and can enable the variable displacement compressor to reach the maximum working displacement fast to improve the vehicle use comfort of drivers and passengers. The control valve for the swash-plate type variable displacement compressor comprises a valve body and a valve element, wherein the valve body is provided with air passages which respectively communicate with an exhaust port, a suction port and a swash plate chamber of the compressor, the exhaust port communicates with the swash plate chamber through a valve port, the valve element further comprises a pressure relief channel used for enabling the swash plate chamber to communicate with the suction port, when the valve port is closed by means of the valve element, the pressure relief channel communicates; and when the valve port is opened by means of the valve element, the pressure relief channel is cut off. According to the invention, one pressure relief channel is added on the valve element for the swash plate chamber to speed up pressure relief of the swash plate chamber to improve the compressor displacement so as to enhance the refrigeration efficiency after a vehicle air conditioner is turned on and improve the vehicle use comfort of the drivers and passengers.

Description

Technical field [0001] The invention relates to the technical field of automobile air-conditioning and refrigeration, in particular to a control valve for a swash plate type variable displacement compressor. Background technique [0002] The automobile air-conditioning compressor is the heart of the automobile air-conditioning refrigeration system. It is directly driven by the engine and plays the role of compressing and transporting refrigerant. [0003] Compressors can be divided into two types: fixed displacement and variable displacement. The fixed-displacement compressor automotive air conditioning system uses the evaporator air temperature to control the closing or disengagement of the electromagnetic clutch of the compressor. The biggest problem of this control method is the interference caused by the periodic clutch of the compressor to the automobile engine. The situation is more prominent when the car engine has a small displacement. Moreover, the compressor in the auto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/22
CPCF04B49/22
Inventor 周文荣汪立新
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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