Title:
ELECTRIC VALVE
Document Type and Number:
WIPO Patent Application WO/2023/068125
Kind Code:
A1
Abstract:
An electric valve 11 comprising: a main valve body 12 having a valve chamber 13 that communicates with an inflow passage 15 for introducing a refrigerant and an outflow passage 16 for discharging the refrigerant; a valve body 17 that changes the flow rate of the refrigerant by advancing and retreating with respect to a valve seat 14 formed in the valve chamber between a closed state in which the valve body is seated on the valve seat and an open state in which the valve body is apart from the valve seat; and an electric motor 45 that drives the valve body. The electric motor has: a stator 46 including a coil 49 that is supplied with a current to generate a magnetic force; and a magnet rotor 36 that is disposed on the inner side of the stator and rotates by receiving the magnetic force generated by the coil. The electric valve further comprises a magnetic sensor 62 that detects the magnetic force of the magnet rotor. In the electric valve, a magnetic shield member (made from, for example, a soft magnetic material) 61 is provided so as to be interposed between the magnetic sensor and the coil.
Inventors:
MATSUBARA YUTA (JP)
YOSHIDA TATSUYA (JP)
ARAI YUSUKE (JP)
YOSHIDA TATSUYA (JP)
ARAI YUSUKE (JP)
Application Number:
PCT/JP2022/037995
Publication Date:
April 27, 2023
Filing Date:
October 12, 2022
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F16K31/04; F25B41/20
Domestic Patent References:
| WO2013084270A1 | 2013-06-13 |
Foreign References:
| JP6857273B1 | 2021-04-14 | |||
| JP2018178908A | 2018-11-15 | |||
| JP2009268166A | 2009-11-12 | |||
| JPH0357094Y2 | 1991-12-25 | |||
| JP2010115022A | 2010-05-20 | |||
| JP2003042325A | 2003-02-13 | |||
| JP2021110395A | 2021-08-02 | |||
| JP2021110409A | 2021-08-02 |
Attorney, Agent or Firm:
MASHIKO Naomichi (JP)
Download PDF: