PISTON VALVE FIXING STRUCTURE FOR A CRYOGENIC REFRIGERATOR

WIPO Patent Application WO/2011/105683

A2

The present invention relates to a cryogenic refrigerator, comprising: a piston which reciprocates in an axial direction within a cylinder; a displacer which reciprocates in the direction opposite to that of the piston; a compression space, the volume of which varies among the cylinder, the piston, and the displacer; a storage groove formed in the piston to store the refrigerant flowing from the compression space; a flow channel formed in an axial direction of the piston so as to put the compression space and the storage groove in communication; a thin piston valve which opens/shuts the flow channel to adjust the suction of the refrigerant into the storage groove from the compression space; and a bolt coupled in the axial direction of the piston so as to fasten the piston valve, thereby fastening the piston valve in a structurally firm manner even under high-pressure conditions, and improving the operating reliability of the piston valve.

PARK, Song Oun (1 Ilsindaedong Free Village, Seongju-dong Seongsan-guChangwon-si, Gyeongsangnam-do 642-940, 642-940, KR)
박성운 (경상남도 창원시 성산구 성주동 일신대동프리빌리지 102동 1504호, 642-940 Gyeongsangnam-do, 642-940, KR)

KR2010/008578

September 01, 2011

December 02, 2010

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LG ELECTRONICS INC. (20 Yeouido-dong Yeongdeungpo-gu, Seoul 150-721, 150-721, KR)
엘지전자 주식회사 (서울 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
PARK, Song Oun (1 Ilsindaedong Free Village, Seongju-dong Seongsan-guChangwon-si, Gyeongsangnam-do 642-940, 642-940, KR)

F25B9/14; F25B9/00

LEE, Kwang-Yeon (Lee & Kim Patent & Trademark Attorneys, 9th F. Handuk Bldg. 649-4,Yoksam-dong, Gangnam-gu, Seoul 135-912, 135-912, KR)

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