Valve needle assembly, valve rod, electronic expansion valve and refrigeration equipment

An electronic expansion valve and valve needle technology, applied in the fields of electronic expansion valve and refrigeration equipment, valve needle assembly and valve stem, can solve the problem of valve stem stuck, achieve smooth axial movement, avoid stuck, and improve performance Effect

Pending Publication Date: 2021-03-12
GUANGDONG WELLING ELECTRIC MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a valve needle assembly, which aims to solve the technical problem that the valve stem is easily stuck in the prior art

Method used

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  • Valve needle assembly, valve rod, electronic expansion valve and refrigeration equipment
  • Valve needle assembly, valve rod, electronic expansion valve and refrigeration equipment
  • Valve needle assembly, valve rod, electronic expansion valve and refrigeration equipment

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Embodiment Construction

[0049] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and / or" appearing in the whole text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy.

[0050] The invention provides an electronic expansion valve.

[0051] see figure 1 , figure 2 and image 3, the present invention proposes a valve needle assembly 100, the electronic expansion valve 200 includes a valve body, the valve body includes an outer cover 210, a valve seat 220 fixedly connected to the outer cover 210, a magnetic rotor 250 rotatable in the outer cover 210, a nut 2...

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PUM

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Abstract

The invention discloses a valve needle assembly, a valve rod, an electronic expansion valve and refrigeration equipment. The valve needle assembly comprises a valve needle, a valve needle sleeve and the valve rod, the valve needle sleeve is provided with a first opening end and a second opening end which are opposite, and the valve needle is installed at the second opening end; the valve rod comprises a threaded rod section in threaded fit with a nut and a driving rod section connected with the threaded rod section, and the driving rod section is movably matched with the valve needle sleeve through the first opening end to drive the valve needle to act; a flange part is arranged on the peripheral wall of the driving rod section, and the flange part is in limiting fit with the valve needlesleeve to limit the driving rod section from being disengaged from the first opening end; the ratio of the outer diameter of the flange part to the length of the threaded rod section is larger than orequal to 0.4 and smaller than or equal to 0.6. According to the valve needle assembly, the valve rod can be prevented from being stuck in the moving process, it can be guaranteed that the valve rod smoothly moves in the axial direction of the valve rod, and therefore the use performance of the electronic expansion valve is improved.

Description

technical field [0001] The invention relates to the technical field of control valves, in particular to a valve needle assembly, a valve stem, an electronic expansion valve and refrigeration equipment. Background technique [0002] In the related art, the electronic expansion valve includes a nut, a valve stem, a valve needle sleeve and a valve needle, the threaded rod section of the valve stem is threadedly connected with the nut, the driving rod section of the valve stem extends into the valve needle sleeve and Cooperating with the valve needle sleeve, the valve stem moves along its axial direction while rotating and drives the valve needle to block or open the valve port, so as to realize the opening or closing of the electronic expansion valve. Because the valve stem is prone to jamming during the movement process, which affects the normal use of the electronic expansion valve. [0003] The above content is only used to assist in understanding the technical solution of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/32F16K1/38F16K47/00F25B41/35
CPCF16K1/02F16K1/32F16K1/38F16K47/00
Inventor 陈超杨茂黄龙华江波
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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