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Title:
多段電動膨張弁及び冷凍装置
Document Type and Number:
Japanese Patent JP4285156
Kind Code:
B2
Abstract:

To provide a multi-stage electric expansion valve capable of arbitrarily changing refrigerant pressure reduction amount without requiring complicated structure and control and reducing passing sound of refrigerant in a gas-liquid two phase condition and to provide a refrigerator using the multi-stage electric expansion valve.

This multi-stage electric expansion valve is composed of a case body 3 provided with an outlet 1 and an inlet 2 for refrigerant, a valve seat 4 formed in the case body 3, and a valve element 5 formed so as to advance and retract for the valve seat 4. The valve element 5 and the valve seat 4 are formed in such a way that restriction passages 6a to 6c capable of converting the direction of refrigerant flow several times in the directions of advance and retraction of the valve element 5 are constituted.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Toru Yukimoto
Application Number:
JP2003303366A
Publication Date:
June 24, 2009
Filing Date:
August 27, 2003
Export Citation:
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Assignee:
Daikin Industries, Ltd.
International Classes:
F16K31/68; F16K31/04; F25B41/06
Domestic Patent References:
JP2001041611A
JP5141813A
JP2002213841A
JP2002107008A
JP2000111207A
JP57022492A
Attorney, Agent or Firm:
Koji Fukui