Title:
ELECTRIC VALVE
Document Type and Number:
WIPO Patent Application WO/2023/248869
Kind Code:
A1
Abstract:
The present invention comprises a motor unit (11) that generates rotational driving force when electric power is supplied, a valve opening forming member (50) that forms a valve opening (52a) through which a fluid passes, a valve body (48) that opens and closes the valve opening, a magnetic gear (60b) that magnetically transmits rotational power from an output shaft (14) of the motor unit to the valve body, and a control unit (81) that controls the current supplied to the motor unit. The control unit limits the current supplied to the motor unit to no more than a fully-closed limiting current (Is) during fully-closed operation when the valve opening has been fully closed by the valve body. The fully-closed limiting current value is greater than an opening-degree adjustment current value (Ia), which is the value of the current supplied to the motor unit during an opening-degree adjustment when the degree to which the valve opening is open is being adjusted by the valve body.
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Inventors:
MATSUMOTO TAKAFUMI (JP)
INOUE HIROTO (JP)
SAHARA TAKURO (JP)
HASHIMOTO SHINJI (JP)
MIYANO SATOSHI (JP)
OUCHI RIKU (JP)
KAWASHIMA HIROYUKI (JP)
OISHI SHIGEJI (JP)
INOUE HIROTO (JP)
SAHARA TAKURO (JP)
HASHIMOTO SHINJI (JP)
MIYANO SATOSHI (JP)
OUCHI RIKU (JP)
KAWASHIMA HIROYUKI (JP)
OISHI SHIGEJI (JP)
Application Number:
PCT/JP2023/021885
Publication Date:
December 28, 2023
Filing Date:
June 13, 2023
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16K31/04
Foreign References:
| JP2008175308A | 2008-07-31 | |||
| JP2020014280A | 2020-01-23 | |||
| JP2004185913A | 2004-07-02 | |||
| JP2013050213A | 2013-03-14 |
Attorney, Agent or Firm:
KAI-SEI PATENT FIRM (JP)
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