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Electronic expansion valve

A technology of electronic expansion valve and valve needle, which is applied in the direction of lifting valve, valve device, mechanical equipment, etc., can solve the problems of high production cost and complex structure of electronic expansion valve, and achieve the effect of simplifying the overall structure and reducing production cost

Active Publication Date: 2022-04-29
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electronic expansion valve can achieve the purpose of regulating the flow rate, the screw rod 4 must cooperate with the thread of the nut 3 to drive the axial lifting movement of the valve needle 5 when it is actuated. The overall structure of the electronic expansion valve is relatively complicated, and the production cost high

Method used

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  • Electronic expansion valve
  • Electronic expansion valve
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Embodiment Construction

[0021] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0022] like Figure 2 to Figure 4 , Figure 11 and Figure 12 As shown, in this embodiment, the electronic expansion valve includes a valve seat 10 , a valve needle 20 and a screw rod 30 . The valve seat 10 has a valve seat cavity 1 and a valve port 121 . The valve needle 20 has an internal thread portion, and at least part of the valve needle 20 is movably disposed in the valve seat cavity 1 . The screw rod 30 has an external thread part, the screw rod 30 can rotate along its own axis, the screw rod 30 and the valve needle 20 cooperate with the internal thread part and the external thread part, and the valve needle 20 is driven by the screw rod 30 to approach or aw...

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PUM

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Abstract

The invention provides an electronic expansion valve, comprising: a valve seat having a valve seat cavity and a valve port; a valve needle, the valve needle has an internal thread part, at least part of the valve needle is movably arranged in the valve seat cavity; The rod has an external thread portion, the screw rod can rotate along its own axis, the screw rod and the valve needle cooperate through the internal thread portion and the external thread portion, and the valve needle approaches or moves away from the valve port driven by the screw rod. The application of the technical scheme of the invention can simplify the electron expansion structure and reduce the production cost.

Description

technical field [0001] The invention relates to the technical field of refrigeration control, in particular to an electronic expansion valve. Background technique [0002] In the electronic expansion valve structure, such as figure 1 As shown, it consists of a driving part (coil 7, rotor 8) and a flow regulating part (nut 3, screw 4, casing, valve needle 5, valve seat 9, connecting pipe, etc.). Specifically, the rotor 8 is connected to the input end of the reducer, and the lead screw 4 is connected to the output end of the reducer (the lead screw 4 can rotate together with the output end of the reducer, and the lead screw 4 is connected to the reducer in its axial direction The relative position of the output can vary). The nut 3 is fixed on the valve seat 9 and is threadedly connected with the screw rod 4 , and the valve needle 5 is fixedly connected with the screw rod 4 . The working principle of the product is briefly described below: the rotor 8 is driven by the coil ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/02
CPCF16K1/02
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD