Matsushita Refrigeration Company

Hiroki Awashima

Takeshi Kojima

Akihiko Kubota

Masahiko Osaka

Hidetoshi Nishihara

Manabu Motegi

Kazuhito Noguchi

Toshihiko Ota

Masahiro Kakutani

Hideki Kawai

Ichiro Kita

Etsuro Suzuki

In a hermetic compressor in a freezing refrigerating system or an air-conditioning system such as a refrigerator or a showcase, a construction is disclosed for intending to provide a low-noise hermetic compressor by effectively attenuating a pressure pulsation having occurred in a compression chamber with a suction muffler. By this construction, since a muffler coverhas a planar simple shape, the deformation upon molding becomes little and it can come into fully close contact with a muffler main body. Therefore, the pressure pulsation hardly leaks through the connecting portion between the muffler main bodyand the muffler cover. The full silencing effect that the suction mufflerhas is obtained and thereby noise can be reduced more effectively.

Hermetic compressor and freezing air-conditioning system

This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjacent to their sources, which intake pressure pulsing occurs at an intake valve port. In the compressor, a resonance spaceis provided adjacent to the intake valve portthat is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake mufflerdo. In addition, although acoustic characteristics of the intake muffleramplify noises having specific frequencies, such noises can be attenuated before being amplified.

Hermetic compressor with an improved cylinder head-suction muffler assembly

A refrigerating system is provided which includes a refrigerating line through which refrigerant flows, a refrigerant compressor for circulating the refrigerant through the refrigerating line, and an oil separation passage connected to the refrigerant compressor. The refrigerant compressor includes an enclosed chamber storing therein a refrigeration oil insoluble in the refrigerant. The oil separation passage directs the refrigerant introduced from an inlet port of the refrigerant compressor to an outlet port through the enclosed chamber for separating the refrigeration oil contained in the refrigerant entering from the inlet port.

Refrigeration system with compressor using refrigeration oil insoluble

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Fujisawa, Japan

Hiroki Awashima