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Electronic expansion valve

An electronic expansion valve, valve seat technology, applied in the direction of lift valve, valve device, valve details, etc., can solve problems such as leakage, and achieve the effect of good sealing effect and good sealing performance

Active Publication Date: 2014-06-18
浙江三花商用制冷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Yet the sealing of bowl-shaped plastic sheet 104 can only realize the one-way sealing when opening end is high pressure (the first interface 34 enters high pressure), if enter high pressure (the second interface 36 enters high pressure) back to the open end, then the bowl-shaped plastic Sheet 104 is forced to shrink, still causing leakage

Method used

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to Figure 3-4 , image 3 It is a structural schematic diagram of the first specific embodiment of the electronic expansion valve provided by the present invention; Figure 4 for image 3 Partial enlarged schematic diagram of part A in the middle.

[0039] In the electronic expansion valve, a valve stem 24 is arranged in the valve chamber, and the valve stem 24 can move axially along the axial through hole of the valve seat of the electronic expansion valve to open or close the valve port 251 on the valve seat, so as to guide Connect or disconnect the two ports of the electronic expansion valve, such as image 3 , 4 The first mouthpiece 31 and the second mouthpiece 32 respectively connected to the...

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Abstract

The invention discloses an electronic expansion valve. The electronic expansion valve comprises a valve seat and a valve housing which are assembled to form a valve chamber; the electronic expansion valve also comprises a valve rod which is located in the valve chamber; the valve seat comprises an axial through hole and is provided with a valve opening; the valve rod is inserted into the axial through hole and can move along the axial direction to open or close the valve opening; one of the inner side wall of the axial through hole of the valve seat and the outer side wall of the valve rod is provided with an installing groove; a sealing ring is arranged in the installing groove. The electronic expansion valve is provided with the installing groove, the sealing ring is arranged in the installing groove, and accordingly the sealing performance between the valve seat and the valve rod can be good due to the sealing ring. Compared with a mode that sealing is performed through a bowl-shaped plastic piece in a background technology, two-way sealing can be achieved due to the sealing ring and the good sealing effect can be maintained regardless of the refrigerant flow.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an electronic expansion valve. Background technique [0002] Please refer to Figure 1-2 , figure 1 is a schematic structural diagram of a typical electronic expansion valve; figure 2 for figure 1 Schematic diagram of the cooperation between the valve seat and the valve stem. [0003] The electronic expansion valve includes a valve casing 100 and a valve seat part 10. After the valve casing 100 and the valve seat part 10 are installed, a valve cavity is formed, and the valve stem 204 is arranged in the valve cavity. The valve housing 100 is provided with a motor 104 and a gear system 106. The motor 104 drives the gear system 106 to rotate. The gear system 106 cooperates with the valve stem 204 to drive the valve stem 204 to move up and down in the axial direction. [0004] The valve seat part 10 is provided with a valve port 202 , a first port 34 and a second...

Claims

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Application Information

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IPC IPC(8): F16K1/32F25B41/06F25B41/35
CPCF16K1/42F16K31/53F16K41/06F25B41/31
Inventor 不公告发明人
Owner 浙江三花商用制冷有限公司
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