Title:
MOTOR VALVE AND REFRIGERATION CYCLE SYSTEM
Document Type and Number:
Japanese Patent JP2019007550
Kind Code:
A
Abstract:
To reduce noise due to flow of refrigerant at a valve port, in a motor valve configured to open/close the valve port with a needle valve to control a flow rate of refrigerant.SOLUTION: In a valve seat part 1B, formed are a first port 11 having a circular cross section and an inner diameter D1, a second port 12 having inner diameters D2α, D2β, a third port 13 having an inner diameter D3, a first taper part 14, and a second taper part 15. The second port 12 has a gentle slope at a taper angle γ. In a first flow state that refrigerant flows from a gap between the first port 11 and a needle part 5a to the second port 12, the flow of the refrigerant is rectified and then stabilized, and in a second flow state that the refrigerant flows from a secondary joint pipe 22 to the third port 13, vibration excitation of the needle part 5a is reduced.SELECTED DRAWING: Figure 2
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| WO/2022/030312 | VALVE |
Inventors:
NAKAGAWA DAIKI
KOBAYASHI KAZUYA
KOBAYASHI KAZUYA
Application Number:
JP2017123610A
Publication Date:
January 17, 2019
Filing Date:
June 23, 2017
Export Citation:
Assignee:
SAGINOMIYA SEISAKUSHO INC
International Classes:
F16K1/42; F16K1/38; F16K31/04; F16K47/02; F25B41/06
Domestic Patent References:
| JP2017089864A | 2017-05-25 | |||
| JP2012082896A | 2012-04-26 |
Attorney, Agent or Firm:
Fumio Takino
Toshiaki Tsuda
Yasuhiro Fukuda
Toshiaki Tsuda
Yasuhiro Fukuda