Electromagnetic control valve for variable displacement compressor

An electromagnetic control valve and compressor technology, applied in pump control, liquid variable capacity machinery, mechanical equipment, etc., can solve the problem of inability to control the rotation speed of the compressor, reduce the probability of resonance and abnormal noise, reduce the impact, and improve The effect of controlling precision

Active Publication Date: 2015-11-11
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The car air-conditioning compressor is the heart of the car air-conditioning refrigeration syste

Method used

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  • Electromagnetic control valve for variable displacement compressor
  • Electromagnetic control valve for variable displacement compressor
  • Electromagnetic control valve for variable displacement compressor

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Example Embodiment

[0043] Example: figure 1 It is a schematic diagram of the structure of the electromagnetic control valve of the present invention. The electromagnetic control valve is mainly composed of three parts: valve part 1, electromagnet part 2 and pressure-sensing part 3, which are arranged on the same axis. The valve part 1 is usually provided with several gas passages for introducing the discharge pressure Pd, the suction pressure Ps and the swash plate chamber pressure Pc. The size 19 of the gas passage between the exhaust pressure Pd and the swash plate cavity pressure Pc is controlled by controlling the axial movement of the valve core 15 so as to realize the adjustment of the swash plate cavity pressure Pc. The electromagnet component 2 will generate an electromagnetic force that drives the valve core 15 to move after being energized. Similarly, the pressure-sensitive member 3 will also generate a force that drives the valve core 15 to move due to the change of the suction pres...

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Abstract

An electromagnetic control valve for a variable displacement compressor is mainly composed of valve parts, electromagnet parts and pressure sensing parts which are arranged on the same axis. The electromagnet parts are arranged between the valve parts and the pressure sensing parts, and each valve part comprises a valve body and a valve element arranged in the valve body, wherein the opening end of the lower end of the valve body is connected with a valve element support plate in an interference fit mode, the lower end of the valve element is contained in a middle through hole formed in the valve element support plate, and an inner cavity of the valve body is provided with multiple through holes which are used for communicating the exhaust pressure, the suction pressure and the crank pressure; the electromagnet parts can generate an electromagnetic force used for driving the adjacent valve element arranged over the electromagnet parts to move after being powered on; the pressure sensing parts can also generate a force used for driving the valve element to move due to the change of the suction pressure. The electromagnetic control valve for the variable displacement compressor has the advantages of being reasonable in structure, capable of improving the control precision and being used for the variable displacement compressor without a clutch, beneficial for the lightweight design of a car and the like.

Description

technical field [0001] The invention relates to an electromagnetic control valve suitable for controlling the discharge capacity of a variable displacement compressor. Background technique [0002] The automotive air-conditioning refrigeration system mainly includes a compressor that converts the refrigerant flowing in the refrigeration cycle of the automobile air-conditioning into a high-temperature and high-pressure gas refrigerant and discharges it, a condenser that condenses the gas refrigerant, and expands the gas refrigerant by reducing it to a low-temperature and low-pressure refrigerant. The valve and the evaporator that evaporatively cools the air in the car, and the refrigerant evaporated in the evaporator returns to the compressor again to form a refrigeration cycle. [0003] The car air-conditioning compressor is the heart of the car air-conditioning refrigeration system, which is directly driven by the engine, so the rotation speed of the compressor cannot be co...

Claims

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Application Information

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IPC IPC(8): F04B49/22
Inventor 汪立新周文荣
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
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