MOTOR-OPERATED VALVE CONTROL DEVICE AND MOTOR-OPERATED VALVE DEVICE

Title:

MOTOR-OPERATED VALVE CONTROL DEVICE AND MOTOR-OPERATED VALVE DEVICE

Document Type and Number:

WIPO Patent Application WO/2023/233939

Kind Code:

A1

Abstract:

[Problem] To provide a motor-operated valve control device and a motor-operated valve device that can suppress malfunction of a motor-operated valve at low temperatures. [Solution] A motor-operated valve control device (100) acquires a temperature (K) on the basis of a signal from a temperature sensor (126) that is arranged outside of a can (20) and transitions to a preparation mode when the temperature (K) is below a reference temperature (Kr). In the preparation mode, when a magnet rotor (31) does not rotate normally, the motor-operated valve control device (100) performs a heat generation operation to make a stator (60) generate heat until the magnet rotor (31) rotates normally. When the magnet rotor (31) has rotated normally, the motor-operated valve control device (100) transitions to a standby mode.

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Inventors:

NARUKAWA BUNTA (JP)
HAGIMOTO HIROSHI (JP)

Application Number:

PCT/JP2023/017445

Publication Date:

December 07, 2023

Filing Date:

May 09, 2023

Export Citation:

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Assignee:

FUJIKOKI CORP (JP)

International Classes:

F16K31/04; H02P8/04

Foreign References:

JP2004125287A	2004-04-22
JP2007032983A	2007-02-08
JP2014150599A	2014-08-21

Attorney, Agent or Firm:

OPUS IP LAW FIRM (JP)

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