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Title:
LOW NOISE TYPE ELECTRONIC EXPANSION VALVE WITH BUILT-IN DISC BELLOWS
Document Type and Number:
Japanese Patent JP2009287769
Kind Code:
A
Abstract:

To provide a low noise type electronic expansion valve capable of shutting off flow of refrigerant in a valve chamber into an inside of a can by a disc bellows.

The electronic expansion valve has a can bent part 12 in which a lower end terminal of the can 13 is bent inward while surrounding a round ceiling 14 inserted in a square projection groove 15 formed toward an inner diameter side at a lower side of an outer circumference edge projection part 18 of a case main body. A case part 10 comprising the can 13 having a ring shape projection 131 formed on an upper surface for reducing noise and vibration generated inside, and a disc bellows support ring 41 are joined and formed together at a guide surface 54 of a valve body 50 for sealing the can 13 and an inside of a case body 11. A disc bellows 40 provided in such a manner that an outer circumference edge terminal of the disc bellows support ring 41 is fixed at an upper part of the valve body 50 and a positioner body part 30 coupled to the case body 11 are connected.


Inventors:
YUN SO NAM
HAM DEOK YONG
HAM YOUNG BOG
PARK JOONG HO
JEONG BYEONG HONG
LEE GUN WOO
Application Number:
JP2008205179A
Publication Date:
December 10, 2009
Filing Date:
August 08, 2008
Export Citation:
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Assignee:
KOREA INST OF MACH & MATERIALS
GREEM INDUSTRY CO LTD
International Classes:
F16K47/02; F16K31/04; F16K41/10
Domestic Patent References:
JP2006132631A2006-05-25
JPH0389826A1991-04-15
JPS6485589A1989-03-30
JPS57157874A1982-09-29
JP2000213368A2000-08-02
JPS6068040A1985-04-18
JPH0251664A1990-02-21
JPH10110850A1998-04-28
JPS6275285A1987-04-07
Attorney, Agent or Firm:
Seiichi Sawaki
Kiichi Sawaki