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1. (WO1991006773) SCROLL COMPRESSOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006773 International Application No.: PCT/JP1990/001421
Publication Date: 16.05.1991 International Filing Date: 02.11.1990
IPC:
F04C 27/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
27
Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Applicants:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 1006, Oaza Kadoma Kadoma-shi Osaka 571, JP (AllExceptUS)
SAKAI, Manabu [JP/JP]; JP (UsOnly)
YAMAMURA, Michio [JP/JP]; JP (UsOnly)
YUDA, Jiro [JP/JP]; JP (UsOnly)
KOJIMA, Yoshinori [JP/JP]; JP (UsOnly)
YAMAMOTO, Syuichi [JP/JP]; JP (UsOnly)
KAWAHARA, Sadao [JP/JP]; JP (UsOnly)
MURAMATSU, Shigeru [JP/JP]; JP (UsOnly)
AIBA, Osamu [JP/JP]; JP (UsOnly)
Inventors:
SAKAI, Manabu; JP
YAMAMURA, Michio; JP
YUDA, Jiro; JP
KOJIMA, Yoshinori; JP
YAMAMOTO, Syuichi; JP
KAWAHARA, Sadao; JP
MURAMATSU, Shigeru; JP
AIBA, Osamu; JP
Agent:
KOKAJI, Akira ; Matsushita Electric Industrial Co., Ltd. 1006, Oaza Kadoma Kadoma-shi Osaka 571, JP
Priority Data:
1/28701902.11.1989JP
Title (EN) SCROLL COMPRESSOR
(FR) COMPRESSEUR A HELICE
Abstract:
(EN) A spring member (23) is confined between a back pressure sealing band (21) and a ring groove (22) formed in a bearing member (18) housing this back pressure sealing band (21) so as to constantly press the back pressure sealing band (21) against the rear surface of a revolving mirror plate (11). The back pressure sealing band (21) is constantly pressed against the rear surface of the revolving mirror plate (11) by the spring member (23) irrespective of the conditions immediately after the start or the operating conditions, the thrust force applied in the axial direction to the revolving mirror plate (11) of the revolving scroll from a space for the compression works can be relieved due to the discharge pressure of a compressor mechanism acting on the center of the revolving mirror plate (11) and a suitable intermediate pressure between a discharge pressure acting on the outer portion of the plate and an intake pressure, whereby the power loss due to the sliding and the like made on the planar surface of the revolving mirror plate (11) is reduced, thus improving the working efficiency of the compressor.
(FR) Un élément à ressort (23) est confiné entre une bande d'étanchéité à la contre-pression (21) et une gorge annulaire (22) ménagée dans un élément d'appui 18) abritant ladite bande d'étanchéité (21) de manière à appuyer constamment ladite bande (21) contre la surface arrière d'une plaque spéculaire tournante (11). La bande d'étanchéité à la contre-pression (21) est constamment appuyée contre la surface arrière de la plaque spéculaire tournante (11) par l'élément à ressort (23) quelles que soient les conditions prévalant immédiatement après le démarrage ou bien les conditions de fonctionnement; la poussée appliquée, depuis un espace de compression, dans le sens axial de la plaque spéculaire (11) de l'hélice en rotation peut être réduite grâce à la pression de refoulement d'un mécanisme agissant sur le centre de la plaque spéculaire (11) et à une pression intermédiaire appropriée se situant entre une pression de refoulement agissant sur la partie extérieure de la plaque et une pression d'admission. La perte de puissance due au glissement et à des phénomènes similaires sur la surface plane de la plaque spéculaire (11) est réduite, améliorant ainsi le rendement du compresseur.
Designated States: DE, KR, US
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
KR1019920701685