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Electric valve

A technology of electric valves and valve chambers, which is applied in the direction of lifting valves, valve devices, valve details, etc., can solve the problems of increased frictional resistance of structural parts, large-scale products, and increased costs, so as to improve actionability, controllability, Effect of Drive Torque Reduction

Active Publication Date: 2022-02-01
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to obtain a large drive torque, it is necessary to increase the output torque of the motor as the lifting drive device, and a magnet rotor material with high magnetic force is required, which may lead to an increase in product size and cost.
In addition, in order to keep the valve closed under a high differential pressure, a coil spring with a large load is required, and this load may increase the frictional resistance between structural parts, etc.

Method used

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  • Electric valve
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Examples

Experimental program
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Effect test

Embodiment Construction

[0067] Below, while referring to the attached Figure 1 Embodiments of the present invention will be described.

[0068] figure 1 It is a longitudinal sectional view showing one embodiment of the electric valve of the present invention, Figure 2 to Figure 5 is used for figure 1 A diagram illustrating the operation of the electric valve shown.

[0069] In addition, in this specification, descriptions indicating positions and directions such as up and down, left and right, and front and back are conveniently indicated in the drawings to avoid cumbersome description, and do not necessarily refer to positions and directions in an actual use state.

[0070] In addition, in each figure, in order to facilitate the understanding of the invention and facilitate drawing, the gap between components, the separation distance between components, etc. are sometimes drawn larger or smaller than the size of each component.

[0071] The electric valve 1 of the illustrated embodiment includ...

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Abstract

Provided is an electric valve that reduces the torque required to open the valve, improves operability and durability, and enables further miniaturization of the electric valve. As the valve holder (23) moves upwards through the lifting drive, the pilot spool (27) and the main spool (25) follow the sequence of the pilot spool (27) and the main spool (25) in different steps. The rising amount is engaged with the valve holder (23), whereby the valve port (11b) is opened with a time difference (stepwise) after the pressure equalizing passage (26A) is opened.

Description

technical field [0001] The present invention relates to an electric valve incorporated in a refrigeration cycle and used for flow control of fluids such as refrigerant. Background technique [0002] As such an electric valve used in a refrigeration cycle or the like, for example, an electric valve is known that includes: a valve core; And the valve shaft has an external thread portion; the valve core applying spring, the valve core applying spring is compressed and installed between the valve core and the valve shaft; the valve main body, the valve main body is provided with a guide rod and a valve seat, The guide rod has an internal thread part screwed with the external thread part of the valve shaft, the valve seat contacts and separates from the valve core; The rotor and the stator are raised and lowered while rotating with respect to the guide rod, and the valve holder slidably inserted into the cylindrical part of the guide rod is provided at the lower part of the valv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/04F16K1/02F16K1/44F16K31/36F16K39/02F16K1/48
CPCF16K1/02F16K1/44F16K1/48F16K31/041F16K31/36F16K39/024Y02B30/70F16K1/36F16K31/047F25B41/20
Inventor 菱谷康平
Owner FUJIKOKI MFG CO LTD