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Title:
ELECTRIC VALVE
Document Type and Number:
Japanese Patent JP2011027148
Kind Code:
A
Abstract:

To effectively reduce refrigerant passing noise, by increasing a capacity of a valve chamber, without increase in size of a valve body or a guide bush.

A straight hole 10 is formed to the valve body 2 of an electric valve A, and the guide bush 4 guiding a valve rod 3 is fixed to the valve body 2 through a tubular spacer 15 press-fitted in an opening part 12 side of the hole 10. A stopper 19 is formed to an inner peripheral flange part 18 disposed on a tip side of the spacer 15, and an end part 24a connected to the valve body 2 of a fluid inlet pipe 24 abuts on the stopper 19 and is restricted. The valve chamber 21 is formed to have a width so that a whole edge of the end part 24a of the fluid inlet pipe 24 enters therein at a position deeper in the hole 10 than the spacer 15. Since a flow of refrigerant from the fluid inlet pipe 24 spreads into the valve chamber 21 with enlarged capacity and stably passes around a valve element 31, the refrigerant passing noise is reduced.


Inventors:
YAMASHITA SHOJI
Application Number:
JP2009171927A
Publication Date:
February 10, 2011
Filing Date:
July 23, 2009
Export Citation:
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Assignee:
FUJI KOKI KK
International Classes:
F16K47/02; F16K31/04; F25B41/06
Domestic Patent References:
JP2006084012A2006-03-30
JP2008032093A2008-02-14
JP2003329698A2003-11-19
JP2006071186A2006-03-16
JP2009052742A2009-03-12
JP2000120885A2000-04-28
JP2008232290A2008-10-02
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office