Title:
ELECTRIC VALVE
Document Type and Number:
WIPO Patent Application WO/2023/090087
Kind Code:
A1
Abstract:
[Problem] To provide an electric valve that is capable of reducing variations in the number of valve-opening pulses. [Solution] An electric valve 1 having a plurality of positions (hereinafter referred to as "stator unit attachment positions"), on a stator unit 7, that attach to a valve body assembly 5A. When the step angle of a stepping motor 66 is denoted by θ, the number of excitation patterns of the stepping motor 66 is denoted by M, the number of the stator unit attachment positions is denoted by K, and an integer is denoted by U, the angle dα[j] around an axis between a jth (j = 1, 2, …, K-1) stator unit attachment position and a j+1th stator unit attachment position is a multiple of the step angle θ and satisfies expression (1) below. (1) dα[j] ≠ M×θ×U
Inventors:
YAZAWA MASASHI (JP)
SUGANUMA TAKESHI (JP)
SUGANUMA TAKESHI (JP)
Application Number:
PCT/JP2022/039837
Publication Date:
May 25, 2023
Filing Date:
October 26, 2022
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F16K31/04
Domestic Patent References:
| WO2004003414A1 | 2004-01-08 |
Foreign References:
| JP2012062961A | 2012-03-29 | |||
| JP2019219048A | 2019-12-26 | |||
| JP2008178291A | 2008-07-31 | |||
| JP2020016247A | 2020-01-30 |
Attorney, Agent or Firm:
OPUS IP LAW FIRM (JP)
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