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1. (WO1991006765) SCROLL COMPRESSOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006765 International Application No.: PCT/JP1990/001402
Publication Date: 16.05.1991 International Filing Date: 31.10.1990
IPC:
F04C 18/02 (2006.01) ,F04C 23/00 (2006.01) ,F04C 27/00 (2006.01) ,F04C 29/02 (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
18
Rotary-piston pumps specially adapted for elastic fluids
02
of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
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
23
Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
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
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
29
Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C18/-F04C28/193
02
Lubrication; Lubricant separation 
Applicants:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 1006, Oaza Kadoma Kadoma-shi Osaka 571, JP (AllExceptUS)
FUJIO, Katsuharu [JP/JP]; JP (UsOnly)
Inventors:
FUJIO, Katsuharu; JP
Agent:
KOKAJI, Akira ; Matsushita Electric Industrial Co., Ltd. 1006, Oaza Kadoma Kadoma-shi Osaka 571, JP
Priority Data:
1/28356131.10.1989JP
Title (EN) SCROLL COMPRESSOR
(FR) COMPRESSEUR A HELICE
Abstract:
(EN) A scroll compressor in which an axially extending minute space in the compression chamber is ensured by energizing the revolving scroll (18) toward the compression chamber while utilizing the pressure of discharged refrigerant gas introduced into the side of the revolving scroll (18) opposite to the compression chamber, and chip seals (98) are disposed in the spiral chip seal group (98) formed only on the tips of revolving scroll laps (18a) with a minute gap permitted so that expansion of the axially extending gap may be prevented by energization with pressure of discharge refrigerant gas introduced into the back-pressure chamber (39) of the revolving scroll (18) so as to press the revolving scroll (18) toward a stationary scroll (15). Thus, the gaps in the axial direction between the tips of spiral laps of the revolving scroll (18) and the stationary scroll (15), at which compressed gas is liable to leak because of dimensional fluctuation arising from the combination of component parts of both scrolls, can be sealed surely and tightly by the chip seals (98a), whereby a minute gap (substantially no gap) in the axial direction between the tips of spiral laps of the stationary scroll (15) and the revolving scroll (18) can easily be maintained and tight sealing is possible even at the time of absence of chip seals, thereby continuous driving with less leakage of compressive pressure during normal operation being enabled.
(FR) Dans un compresseur à hélice, un espace minuscule s'étendant axialement dans la chambre de compression est ménagé par l'excitation de l'hélice tournante (18) en direction de la chambre de compression, au moyen de la pression du gaz réfrigérant refoulé, introduit par le côté de l'hélice tournante (18) opposé à la chambre de compression. Des joints circulaires (98) sont disposés dans les gorges hélicoïdales prévues à cet effet et formées uniquement sur les pointes des parties de recouvrement (18a) de l'hélice tournante, un espace minuscule étant autorisé, de sorte que l'on peut empêcher l'élargissement de l'espace s'étendant axialement, par une excitation avec la pression du gaz refoulé, introduit dans la chambre de contre-pression (39) de l'hélice tournante (18), de manière à solliciter cette dernière en direction d'une hélice fixe. Ainsi, les espaces existant dans le sens axial entre les pointes des parties de recouvrement hélicoïdales de l'hélice tournante (18) et de l'hélice fixe (15), au niveau desquelles du gaz comprimé est susceptible de fuir en raison des variations dimensionnelles découlant de la combinaison de pièces constitutives des deux hélices, peuvent être scellés de manière fiable et hermétique par les joints circulaires (98a). Un espace minuscule (pratiquement aucun espace) dans le sens axial entre les pointes des parties de recouvrement hélicoïdales de l'hélice fixe (15) et de l'hélice tournante (18) peut être aisément maintenu, et une étanchéité totale est possible même en l'absence de joints circulaires, permettant ainsi un entraînement en continu avec des pertes moindres en compression pendant le fonctionnement normal.
Designated States: DE, KR, US
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US5520526KR1019920701672