COMPRESSION MECHANISM AND SCROLL COMPRESSOR

• Main Authors: YAMAMOTO, SATOSHI, YAMAJI, HIROYUKI, MURAKAMI, YASUHIRO, ARAI, MIE, KISHIKAWA, MITSUHIKO, KAJIWARA, MIKIO
• Format: Patent
• Language: English; French; Japanese
• Published: 12.02.2009
• Subjects: ALLOYS; BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; HEATING; INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES ORMATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHERTHAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; POWDER METALLURGY; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

A compression mechanism that has increased strength and rigidity and in which seizure is prevented. A scroll compressor (1) has the compression mechanism (15). The compression mechanism (15) has a stationary scroll (24) and a movable scroll (26) and compresses refrigerant. The stationary scroll (24) and the movable scroll (26) use different materials. Specifically, either of the stationary scroll (24) and the movable scroll (26) is a die cast molding produced by molding cast iron by semi-molten die casting. The other is a gray pig cast iron product. A gray pig cast iron product having a tensile strength in the range of not less than 250 N/mm2 but not more than 300 N/mm2 can be used. L'invention concerne un mécanisme de compression ayant une résistance et une rigidité accrues et selon lequel une défaillance est empêchée. L'invention concerne également un compresseur à spirale (1) ayant le mécanisme de compression (15). Le mécanisme de compression (15) a une spirale immobile (24) et une spirale mobile (26) et comprime un fluide de refroidissement. La spirale immobile (24) et la spirale mobile (26) utilisent différents matériaux. De façon spécifique, la spirale immobile (24) ou la spirale mobile (26) est un moulage coulé sous-pression produit par le moulage d'une fonte par un moulage sous-pression semi-fondu, ou un produit de fonte de moulage. Un produit de fonte de moulage ayant une résistance à la traction qui se situe dans la plage non inférieure à 250 N/mm2 mais non supérieure à 300 N/mm2 peut être utilisé.