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an electric valve

A technology of electric valves and valve ports, which is applied in the direction of lifting valves, control valves, valve devices, etc.

Active Publication Date: 2019-11-01
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional expansion valve, whether it is an electronic expansion valve or a thermal expansion valve, can only play a throttling role.

Method used

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  • an electric valve
  • an electric valve
  • an electric valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The orientation nouns described in this specification are described in accordance with the orientation relationship in the drawings or the corresponding orientation relationships in the drawings.

[0031] Such asfigure 1 As shown, the electric valve includes a valve body 1, a valve core assembly 2 and a coil assembly 3, wherein the coil assembly 3 can be sleeved on the valve core assembly 2, and the coil assembly 3 can be fixed to the valve body 1 by screws or the like. A circuit board and a connector can also be arranged in the coil assembly 3, wherein the circuit board and the connector can be integrated into one body.

[0032] Such as Figure 2 to Figure 5 As shown, the valve core assembly 2 includes a piston 5, a valve seat 4, a valve needle 21 and a rotor 22. A return spring 7 is arranged between the piston 5 and ...

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PUM

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Abstract

The invention discloses an electric valve, comprising a valve body, a valve core assembly and a coil assembly, the valve core assembly includes a piston, a valve seat, a valve needle and a rotor, the valve seat is provided with a first valve port, and the valve body is provided with a second Two valve ports, the first port, the second port, the second valve port and the bypass channel, one end of the first valve port is kept in communication with the first port, and the other end of the first valve port is connected to the second port through the bypass channel The two ports are connected, a third valve port is provided between the second valve port and the second port, and a check valve is directly provided between the third valve port and the second port; when the second port is used as an inlet, when the valve needle When the flow area of ​​the throttling channel formed between the first valve port and the first valve port is smaller than the cross-sectional area of ​​the first valve port, the second valve port and the third valve port are closed, and the second port passes through the bypass channel and the first valve port and the second valve port. An interface is connected, and the flow area of ​​the throttling channel formed between the valve needle and the first valve port changes as the distance between the valve needle and the first valve port changes.

Description

technical field [0001] The invention relates to the field of fluid control, in particular to an electric valve. Background technique [0002] As people's requirements for energy saving and emission reduction are getting higher and higher, the performance requirements for air conditioning systems are also getting higher and higher, and heat pump air conditioning systems have become a popular application today. But the traditional expansion valve, whether it is an electronic expansion valve or a thermal expansion valve, can only play a throttling role. If it is necessary to realize the functions of throttling and full opening and full closing, it is often necessary to use a combination of multiple expansion valves and multiple solenoid valves in the air conditioning system to realize the functions of throttling and full opening and full closing. [0003] With the increasing performance requirements of the air conditioning system, the increasing requirements for the compactnes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K1/52F16K15/06F16K15/18F16K1/36F16K1/42F16K1/44F16K27/02F25B41/06F25B41/325
CPCF16K1/00F16K1/36F16K1/42F16K1/443F16K1/52F16K15/06F16K15/18F16K27/0254F25B41/31
Inventor 刘锡波杨仕钊周文荣
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD