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Electronic expansion valve

An electronic expansion valve, valve core technology, applied in the direction of lift valve, valve details, valve device, etc., can solve problems affecting customer comfort, flow noise, etc.

Pending Publication Date: 2021-08-31
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a throttling element, the electronic expansion valve is widely used in refrigeration systems to adjust the flow of refrigerant. Usually, the coil part drives the rotor to rotate, and drives the screw drive of the transmission part to push the valve needle part to move up and down in the axial direction to control the opening of the valve. The electronic expansion valve includes a valve core, a valve stem and a valve body. The valve body is provided with a large valve port, and the valve core is provided with a small valve port. The valve stem and the small valve port constitute the small flow rate of the electronic expansion valve. The regulating mechanism, the electronic expansion valve has refrigerant flow noise in the process of regulating the refrigerant flow in a small flow state, which affects the comfort of customers

Method used

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Experimental program
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Embodiment approach

[0024] Combine below figure 1 figure 2 as well as Figure 6 Introduce the second embodiment of the electronic expansion valve provided by the present invention. The difference from the first embodiment lies in the structure of the cylindrical portion 72, which includes a cylindrical body 721 and a lower end portion 722. , the lower end portion 722 is roughly a hollow ring-shaped end plate structure, the lower end portion 722 is provided with a through hole 7224 to fit with the valve core 72, the lower end portion is radially inwardly extended from the cylindrical body 721, along the circumference of the lower end portion 722 There are several through holes 7222' in the direction, and there is a partition 7223' between two adjacent through holes 7222'. The through holes 7222' form a circulation channel at the lower end for the refrigerant to flow into the core assembly 7. When the refrigerant After entering the valve cavity A through the first connecting pipe 10, after settl...

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PUM

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Abstract

The invention discloses an electronic expansion valve. The structure of an element body assembly is optimally designed, the element body assembly comprises a body, a barrel-shaped part and a valve element, the barrel-shaped part comprises a lower end part, the lower end part is provided with a circulation channel, and when the electronic expansion valve is in a small-flow adjusting state, the lower end part is not higher than the inlet end of a first connecting pipe; and after a refrigerant enters a valve cavity from an inlet part, through the gas-liquid separation and sedimentation effect, the refrigerant containing few bubbles sinks and enters the element body assembly through the circulation channel, the refrigerant containing larger bubbles rises, and the flowing noise generated by the refrigerant during small-flow adjustment of the electronic expansion valve can be relatively reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of refrigeration control, in particular to an electronic expansion valve. 【Background technique】 [0002] As a throttling element, the electronic expansion valve is widely used in refrigeration systems to adjust the flow of refrigerant. Usually, the coil part drives the rotor to rotate, and drives the screw drive of the transmission part to push the valve needle part to move up and down in the axial direction to control the opening of the valve. The electronic expansion valve includes a valve core, a valve stem and a valve body. The valve body is provided with a large valve port, and the valve core is provided with a small valve port. The valve stem and the small valve port constitute the small flow rate of the electronic expansion valve. The adjustment mechanism and the electronic expansion valve have refrigerant flow noise in the process of adjusting the refrigerant flow in a small flow state, which affe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/36F16K1/52F16K1/32F16K27/02F16K31/06F16K31/50F16K47/02
CPCF16K1/02F16K1/32F16K1/36F16K1/52F16K27/029F16K31/0655F16K31/0675F16K31/50F16K47/02
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD