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Electronic expansion valve

An electronic expansion valve and valve seat technology, which is applied in the direction of valve lift, valve details, valve device, etc., can solve problems such as bias flow, loud noise, and affect user experience, and achieve the effect of preventing bias flow and avoiding large noise

Inactive Publication Date: 2016-04-13
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the electronic expansion valve works in reverse, the refrigerant flows from the vertical pipe 2' to the horizontal pipe 3' through the main valve port 6'. Loud noise affects user experience

Method used

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Embodiment Construction

[0023] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0024] Please refer to Figure 2 to Figure 6 , according to the embodiment of the present invention, the electronic expansion valve includes a valve body 1 , a vertical pipe 2 , a horizontal pipe 3 , a valve seat 4 and a valve needle 5 , and the valve seat 4 , the vertical pipe 2 and the horizontal pipe 3 are all arranged on the valve body 1 , the valve seat 4 is provided with a main valve port 6, the valve needle 5 can move axially relative to the main valve port 6 of the valve seat 4 to open or close the main valve port 6, the valve seat 4 is provided with an annular sleeve along the axial direction The tube 7 and the annular sleeve 7 are sleeved outside the valve needle 5 and form an annular channel 8 with the valve needle 5 . The height h of the annular channel 8 is greater than or equal to 1 / 4 of the stroke of...

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Abstract

The invention provides an electronic expansion valve. The electronic expansion valve comprises a valve body (1), a vertical connecting pipe (2), a transverse connecting pipe (3), a valve seat (4) and a valve needle (5). The valve seat (4), the vertical connecting pipe (2) and the transverse connecting pipe (3) are all arranged on the valve body (1). A main valve port (6) is formed in the valve seat (4). The valve needle (5) can move in the axial direction relative to the main valve port (6) of the valve seat (4) so as to open or close the main valve port (6). The electronic expansion valve is characterized in that an annular sleeve (7) is arranged on the valve seat (4) in the axial direction, the valve needle (5) is sleeved with the annular sleeve (7), and an annular channel (8) is formed between the annular sleeve (7) and the valve needle (5); the height of the annular channel (8) is larger than or equal to a quarter of the stroke of the valve needle (5). According to the electronic expansion valve, the problem that the phenomenon of deviated flow occurs when refrigerating fluid flows reversely, and consequentially high noise is generated can be solved.

Description

technical field [0001] The invention relates to the field of air conditioning equipment accessories, in particular to an electronic expansion valve. Background technique [0002] The electronic expansion valve adjusts the liquid supply volume of the evaporator according to the preset program. Because it belongs to the electronic adjustment mode, it is called the electronic expansion valve. It adapts to the development requirements of refrigeration electromechanical integration, and has excellent characteristics unmatched by thermal expansion valves, which provides conditions for intelligent control of refrigeration systems, and is a promising self-control energy-saving component. [0003] Existing electronic expansion valves such as figure 1 As shown, it includes a vertical pipe 2', a horizontal pipe 3', a valve seat 4' and a valve needle 5', the valve seat 4' is provided with a main valve port 6', and the valve needle 5' cooperates with the valve seat 4' to open Or close ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/32F16K27/02
Inventor 俞少锋王定军
Owner ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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