Title:
MOTORIZED VALVE
Document Type and Number:
WIPO Patent Application WO/2023/276886
Kind Code:
A1
Abstract:
Provided is a motorized valve that has a small height and can accurately detect the rotational angle of a magnet rotor. A magnet rotor (41A) of a motorized valve (1A) has as a unit a first magnetic pole section (41a), a magnetic buffer section (41b), and a second magnetic pole section (41c), which are connected in sequence along the rotational shaft of the magnet rotor. In the first magnetic pole section (41a), disposed are a plurality of N poles and a plurality of S poles that run parallel in alternation circumferentially. In the second magnetic pole section (41c), disposed are a single N pole and a single S pole that run parallel in alternation circumferentially. A stator unit (80) has an angle sensor (96) for detecting the rotational angle of the second magnetic pole section (41c). The material that constitutes the first magnetic pole section (41a) differs from the material that constitutes the second magnetic pole section (41c).
Inventors:
MATSUBARA YUTA (JP)
YOSHIDA TATSUYA (JP)
YOSHIDA TATSUYA (JP)
Application Number:
PCT/JP2022/025335
Publication Date:
January 05, 2023
Filing Date:
June 24, 2022
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F16K31/04; F16K37/00; H02K11/215; H02K21/14
Foreign References:
| JPH0198777A | 1989-04-17 | |||
| JPH04253310A | 1992-09-09 | |||
| JP2003042325A | 2003-02-13 |
Attorney, Agent or Firm:
OPUS IP LAW FIRM (JP)
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