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Title:
EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2012/039450
Kind Code:
A1
Abstract:
An orifice (60) formed in a valve seat (12) has: an orifice inlet portion (61) where the hole diameter is smallest; an orifice intermediate portion (62) where the hole diameter increases in the refrigerant flow out direction from the orifice inlet portion (61) such that a first taper angle is formed; and an orifice outlet portion (63) where the hole diameter does not change or increases in the refrigerant flow out direction from the orifice intermediate portion (62) such that a second taper angle smaller than the first taper angle is formed.

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Inventors:
KIKUCHI YOSHIMASA (JP)
WAKISAKA SHIGETAKA (JP)
SHIMAMURA TAKASHI (JP)
TOMIOKA KEIJI (JP)
FUKUOKA MOTOHIKO (JP)
Application Number:
PCT/JP2011/071574
Publication Date:
March 29, 2012
Filing Date:
September 22, 2011
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
KIKUCHI YOSHIMASA (JP)
WAKISAKA SHIGETAKA (JP)
SHIMAMURA TAKASHI (JP)
TOMIOKA KEIJI (JP)
FUKUOKA MOTOHIKO (JP)
International Classes:
F25B41/06; F16K1/42; F16K47/02; F25B41/00
Foreign References:
JP2004132498A2004-04-30
JP2004340260A2004-12-02
JP2007107623A2007-04-26
JP2009228689A2009-10-08
Other References:
See also references of EP 2620724A4
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
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