Pumps – With muffler acting on pump fluid
Reexamination Certificate
2007-07-17
2007-07-17
Stashick, Anthony D. (Department: 3746)
Pumps
With muffler acting on pump fluid
C181S403000, C181S236000, C181S229000
Reexamination Certificate
active
10432029
ABSTRACT:
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 space38is provided adjacent to the intake valve port29that is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake muffler31do. In addition, although acoustic characteristics of the intake muffler31amplify noises having specific frequencies, such noises can be attenuated before being amplified.
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Awashima Hiroki
Kakutani Masahiro
Kojima Takeshi
Kubota Akihiko
Motegi Manabu
Frantz Jessica
Matsushita Refrigeration Company
Woo Louis
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