Title:
電動弁
Document Type and Number:
Japanese Patent JP7440107
Kind Code:
B2
Abstract:
In an electric-operated valve (1), when a rotor (41) is at a reference position, a valve member (30) is in contact with a valve seat (18). When the rotor is at a valve opening position where the valve member separates from the valve seat, a minimum throttle passage (38) is formed between a lower end (36b) of the intermediate portion (36) and an orifice portion (17a). D represents a tolerance range of the number of pulses input to a stepping motor (66) while the rotor rotates from the reference position to the valve opening position, and a distance between the lower end of the intermediate portion and an upper end (17a1) of the orifice portion when the valve member is in contact with the valve seat is greater than or equal to a moving distance of the valve member corresponding to D + 1 pulses.
Inventors:
Masashi Yazawa
Takeshi Suganuma
Takeshi Suganuma
Application Number:
JP2022006318A
Publication Date:
February 28, 2024
Filing Date:
January 19, 2022
Export Citation:
Assignee:
Fuji Koki Co., Ltd.
International Classes:
F16K31/04
Domestic Patent References:
| JP2018135954A | ||||
| JP2002122367A | ||||
| JP2017223263A | ||||
| JP2017515055A | ||||
| JP2011208716A | ||||
| JP2001304445A | ||||
| JP2001343083A | ||||
| JP2017180569A | ||||
| JP2019219048A |
Attorney, Agent or Firm:
Patent Attorney Corporation Opus International Patent Office
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