Electric valve

By employing a magnetic coupling structure of a driving magnet and a driven magnet in the electric valve, and using a magnetic sensor to detect the magnetic force of the driven magnet, the problem of inconsistent angles between the output shaft and the driving shaft is solved, enabling more accurate valve core position detection and a simplified assembly process.

CN121311706APending Publication Date: 2026-01-09FUJIKOKI MFG CO LTD
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Patent Information

Application Number
CN202480005451.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-06-16
Filing Date
2024-02-02
Publication Date
2026-01-09

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Abstract

The invention provides an electric valve which can more accurately detect the position of a valve core and is easy to assemble. The electric valve (1) is provided with a valve main body (10), a tank body (30), a driving shaft (70), a planetary gear mechanism (60) which transmits rotation of a rotor (51) to the driving shaft (70), a valve core (40) which is arranged in a valve chamber (13) of the valve main body (10) and of which the position in the vertical direction changes according to the rotation of the driving shaft (70), and a magnetic sensor (85) which is arranged on the outer side of the tank body (30). The electric valve (1) is provided with a driving magnet (76) which is installed on a driving shaft (70) and rotates together with the driving shaft (70), and an annular driven magnet which surrounds the driving magnet (76). The driven magnet (77) rotates about the drive shaft (70) in conjunction with the rotation of the drive magnet (76). The magnetic sensor (85) detects the magnetic force of the driven magnet (77).
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Citation Information

Patent Citations

  • Motor-operated valve

    JP2018135908A