Electronic expansion valve, air conditioner and automobile

By using a combination of plastic and metal gaskets and valve needles in the electronic expansion valve, and taking advantage of the micro-elasticity and self-lubricating properties of plastic, the problem of poor sealing between the valve needle and the valve port is solved, resulting in higher sealing performance and lower wear, extended service life, and reduced manufacturing costs.

CN224517071UActive Publication Date: 2026-07-17GUANGDONG MEIZHI COMPRESSOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG MEIZHI COMPRESSOR
Filing Date
2025-06-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the use of existing electronic expansion valves, the seal between the valve needle and the valve port is not tight, leading to leakage problems.

Method used

The combination of sealing gaskets and valve needles made of plastic and metal utilizes the slight deformation of the plastic when the valve is closed to compensate for tiny gaps, enhance sealing, and reduce wear through the self-lubricating effect of the plastic.

Benefits of technology

It improves the sealing performance between the valve needle and the valve port, prevents leakage, extends service life, reduces manufacturing costs, and improves the sealing performance and energy efficiency of the system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224517071U_ABST
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Abstract

The utility model discloses an electronic expansion valve, air conditioner and car relate to electronic expansion valve technical field, wherein, electronic expansion valve includes valve seat, valve needle structure and sealing washer, and valve seat is equipped with first mobile passageway and with first mobile passageway intercommunication's first intercommunication, and first valve needle is equipped with second mobile passageway and with second mobile passageway intercommunication's second intercommunication, and first sealing washer is located on first intercommunication, and first sealing washer is equipped with with first mobile passageway intercommunication's first valve mouth, and second sealing washer is located on second intercommunication, and second sealing washer is equipped with with second mobile passageway intercommunication's second valve mouth, and first sealing washer and first valve needle one of them is plastic material quality, and the other is metal material quality, and / or, and second sealing washer and second valve needle one of them is plastic material quality, and the other is metal material quality. The application technical scheme can improve the sealing between valve needle and valve mouth.
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Claims

1. An electronic expansion valve characterized by, include: The valve seat is provided with a first moving channel and a first communication port communicating with the first moving channel; A valve needle structure, comprising a first valve needle and a second valve needle, wherein the first valve needle is provided with a second moving channel and a second communicating port communicating with the second moving channel; as well as A sealing gasket, comprising a first sealing gasket and a second sealing gasket, wherein the first sealing gasket is disposed on the first connecting port and has a first valve port communicating with the first moving channel; the second sealing gasket is disposed on the second connecting port and has a second valve port communicating with the second moving channel; the first valve needle is movably disposed within the first moving channel to close or open the first valve port; and the second valve needle is movably disposed within the second moving channel to close or open the second valve port. One of the first sealing gasket and the first valve needle is made of plastic, and the other is made of metal; and / or, one of the second sealing gasket and the second valve needle is made of plastic, and the other is made of metal.

2. The electronic expansion valve according to claim 1, wherein The first sealing gasket and / or the second sealing gasket are made of rubber.

3. The electronic expansion valve according to claim 2, wherein The material of the first sealing gasket and / or the second sealing gasket is PTFE, PP, PPS or PEEK.

4. The electronic expansion valve of claim 1, wherein The first valve port, whose edge is used to abut against the first valve needle, is tapered. And / or, the second valve needle is conical in shape and is used to abut against the outer peripheral surface of the second valve port edge.

5. The electronic expansion valve according to claim 4, wherein The cone angle of the cone surface of the first valve port ranges from 60° to 90°; And / or, the cone angle of the cone surface of the second valve needle ranges from 30° to 60°.

6. The electronic expansion valve according to claim 5, wherein The first valve needle is arranged in an arc shape to abut against the side of the first valve port; And / or, the edge of the second valve port is provided with an arc surface.

7. An air conditioner characterized by comprising: Includes the electronic expansion valve as described in any one of claims 1 to 6.

8. An automobile characterized by comprising: Including the air conditioner as described in claim 7.