Title:
電動弁及び冷凍サイクルシステム
Document Type and Number:
Japanese Patent JP7341280
Kind Code:
B2
Abstract:
To reduce noise caused by flow of a refrigerant in a valve port at a motor valve which opens or closes the valve port with a needle valve to control a flow rate of the refrigerant.SOLUTION: A valve housing 1 is formed with a first port 11 having a circular cross section and an inner diameter D1, a second port 12 having an inner diameter D2, a third port 13 having an inner diameter D3, a first taper part 14, and a second taper part 15. When a refrigerant flowing from a gap between the first port 11 and a needle valve 5a flows into the second port 12, the flow is rectified to be stabilized without rapidly recovering pressure in the second port 12. The action inhibits rupture of cavitation. When the refrigerant flows from the second port 12 to the second taper part 15 and the third port 13, a flow velocity is reduced to reduce flow velocity sound.SELECTED DRAWING: Figure 3
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Inventors:
Kazuya Kobayashi
Daiki Nakagawa
Daiki Nakagawa
Application Number:
JP2022067467A
Publication Date:
September 08, 2023
Filing Date:
April 15, 2022
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
F16K31/04; F16K1/42; F16K47/02; F25B41/35
Domestic Patent References:
| JP10281324A | ||||
| JP2015143543A | ||||
| JP2005221095A | ||||
| JP201789864A |
Attorney, Agent or Firm:
Fumio Takino
Toshiaki Tsuda
Yasuhiro Fukuda
Toshiaki Tsuda
Yasuhiro Fukuda