Electric valve

JP2026090604APending Publication Date: 2026-06-02FUJIKOKI MFG CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
FUJIKOKI MFG CO LTD
Filing Date
2026-03-05
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing electric valves for refrigeration cycles in air conditioners face challenges in achieving flexible opening/closing control while maintaining a compact size and reducing weight, due to the integration of multiple valve devices which increase structural size and complexity.

Method used

The electric valve design incorporates a valve body with multiple passages, a motor-driven conversion mechanism, and a tiltable valve shaft, allowing for precise control through a stepping motor operation without direct contact with high-pressure refrigerant, thereby reducing the need for robust can and seal structures.

Benefits of technology

This design enhances the freedom of valve control, achieves miniaturization, and reduces weight while ensuring reliable operation under varying pressure conditions, compatible with existing refrigeration cycles.

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Abstract

To provide an electric valve that ensures miniaturization and weight reduction while improving the degree of freedom in valve on / off control. [Solution] The valve body 2A is equipped with a third passage 23 and a valve seat 20, the valve shaft 3A is equipped with a valve body 31Aa that can seat on the valve seat, the motor 5 is disposed on the valve body on the opposite side of the third passage from the valve seat, the conversion mechanism converts the rotation of the rotor 57 of the motor into linear motion and transmits it to the valve shaft, and the can 50 is in communication with the third passage, a drive member 58a which rotates and is displaced in the axial direction is disposed between the conversion mechanism and the valve shaft, the axial displacement of the drive member is transmitted to the valve shaft when the drive member comes into contact with the valve shaft, the valve shaft consists of a first shaft 31A equipped with the valve body that seats on the valve seat and a second shaft 32A connected to the first shaft, the axis of the second shaft is tiltable with respect to the axis of the first shaft.
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