Electronic expansion valve
A technology of electronic expansion valve and valve needle, which is applied in the direction of valve lift, valve details, valve device, etc. It can solve the problems of unbalanced force and affecting the valve opening ability of electronic expansion valve, and achieve the effect of excellent valve opening ability and easy assembly
Pending Publication Date: 2021-07-16
ZHEJIANG HENGSEN IND GROUP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The traditional electronic expansion valve is affected by the pressure of the pipeline, and there is an unbalanced force inside, which affects the opening ability of the electronic expansion valve
Method used
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Embodiment
[0032] combined with figure 1 , an electronic expansion valve, the electronic expansion valve includes a first support seat 1, a housing 2, a shaft 4, a guide rail 5, a magnetic ring 6, a spring 7, a screw rod 9, a second support seat 10, a nut 11 and a second Valve seat 13, the housing 2 is covered outside the remaining components, the first support seat 1 is slidingly connected with the guide rail 5 through the shaft 4, the outer circumference of the guide rail 5 is provided with a magnetic ring 6, and the inside of the guide rail 5 is provided with a spring 7 and the second support seat 10, the magnetic ring 6 is connected with the screw rod 9, the first valve seat 12 is fixedly connected to the casing 2 and is connected with a nut 11, and the nut 11 cooperates with the screw rod 9, so The screw rod 9 is connected with the valve needle 14 , and the second valve seat 13 is connected with the first connecting pipe 16 and the second connecting pipe 17 .
[0033] Connect sprin...
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The invention discloses an electronic expansion valve, and relates to the technical field of valves. The electronic expansion valve comprises a valve needle and a first valve seat, the valve needle is used for controlling opening and closing of the electronic expansion valve, an inner balance channel and an annular groove are formed in the valve needle, and a sealing structure is arranged between the valve needle and the first valve seat. The inner balance channel is used for enabling the valve inner space to communicate with the outer channel space, the inner balance channel is provided with symmetrical divergent channels, and the centers of the divergent channels are connected to the outer channel space; the annular groove is internally provided with a sealing part; and the inner wall of the first valve seat is provided with an opening structure with an inclined face and a fillet structure. The electronic expansion valve has the beneficial effects that (1) differential pressure at the two ends of a valve head can be balanced, and the valve opening capacity is excellent; and (2) the whole structure is easy to assemble.
Description
technical field [0001] The invention relates to the technical field of valves, in particular to an electronic expansion valve. Background technique [0002] The electronic expansion valve uses the electrical signal generated by the adjusted parameters to control the voltage or current applied to the expansion valve, thereby achieving the purpose of adjusting the liquid supply. The stepless variable capacity refrigeration system has a wide range of cooling liquid supply adjustment, and requires fast adjustment response. Traditional throttling devices (such as thermal expansion valves) are difficult to do well, and electronic expansion valves can meet the requirements well. [0003] The electronic expansion valve is a throttling element that can throttle the flow of refrigerant entering the refrigeration unit according to a preset program. In some occasions where the load changes drastically or the operating range is wide, traditional throttling elements (such as capillary tu...
Claims
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IPC IPC(8): F16K1/02F16K1/36F16K1/42F16K1/32F16K27/02F16K31/06F16K31/50
CPCF16K1/02F16K1/36F16K1/42F16K1/32F16K27/029F16K31/0655F16K31/0675F16K31/50
Inventor 何永水何泽淼张永涛
Owner ZHEJIANG HENGSEN IND GROUP