Electronic expansion valve

An electronic expansion valve, valve seat technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems affecting the normal use and deformation of the electronic expansion valve, and achieve the effect of reducing the pressure difference and avoiding the deformation of the valve needle

Inactive Publication Date: 2017-09-15
诸暨百胜环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the valve needle of the electronic expansion valve is opened, it is deformed due to the pressure difference between the inlet and the outlet, which affects the normal use of the electronic expansion valve.

Method used

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Embodiment Construction

[0015] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0016] Such as Figures 1 to 3 As shown, the electronic expansion valve includes a casing 2, a valve seat 1, a valve needle 8, a driving mechanism, and an actuator. The driving mechanism is installed in the casing 2, the actuator is installed in the valve seat 1, and the casing 2 is disassembled and installed on the valve seat 1. Above, the valve needle 8 is connected with the actuator, and the valve needle 8 includes a disc-shaped threaded part 81 and a rounded frustum-shaped blocking part 82. The diameter is smaller than the diameter of the bottom end of the threaded portion 81, and the threaded portion 81 is provided with a through hole 801 that penetrates up and down, and the bottom end of the threaded portion 81 is provided with an arc-shaped groove 802 that communicates with the lower opening of the through hole 801; The valve...

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PUM

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Abstract

The invention relates to an electronic expansion valve, which includes a casing, a valve seat, a valve needle, a driving mechanism and an executing mechanism. The beneficial effects of the present invention are: a valve needle with a screw connection part and a plugging part is designed, and a through hole through the upper and lower sides is provided on the screw connection part of the valve needle, so that the fluid part of the inlet of the valve needle passes through the through hole first when the valve needle is opened. The hole reaches the outlet, thereby reducing the pressure difference between the inlet and the outlet, and avoiding the deformation of the valve needle; the combination of the arc-shaped groove and the arc-shaped protrusion not only has a sealing effect on the lower opening of the through hole, but also has a positioning effect on the valve needle.

Description

technical field [0001] The invention relates to the field of electronic expansion valves, in particular to an electronic expansion valve. Background technique [0002] Electronic expansion valves are important components in, for example, air-conditioning and refrigeration systems. The electronic expansion valve is mainly used to regulate the flow of working fluid (such as refrigerant). The electronic expansion valve can be controlled by a stepping motor, and usually consists of a driving mechanism (stepping motor), an actuator (screw transmission mechanism), a throttling mechanism (needle valve seat) and related auxiliary mechanisms. [0003] When the valve needle of the electronic expansion valve is opened, it is deformed due to the pressure difference between the inlet and the outlet, which affects the normal use of the electronic expansion valve. Contents of the invention [0004] The purpose of the present invention is to overcome the above problems in the prior art ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/38F16K27/02F16K31/04F16K31/53F16K31/50
CPCF16K1/38F16K27/0254F16K31/041F16K31/502F16K31/53
Inventor 姚达江
Owner 诸暨百胜环境科技股份有限公司
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