Hermetic compressor with pressure pulsation reducing mechanism f

Details Hermetic compressor with pressure pulsation reducing mechanism f Hermetic compressor with pressure pulsation reducing mechanism f

1994-05-17

1995-09-26

Bertsch, Richard A.

Pumps

With muffler acting on pump fluid

181403, F04B 5300

Patent

active

054529913

ABSTRACT:
A hermetic compressor includes a sealed casing which accommodates therein a compressing unit for compressing a refrigerant and a driving unit for driving the compressing unit. A communication passage is provided for establishing communication between the compressing unit and a discharge muffler. The discharge muffler is formed therein with a substantially annular hermetic passage for the compressed refrigerant introduced via the communication passage. In the substantially annular hermetic passage, the introduced compressed refrigerant is bifurcated in opposite directions. The substantially annular hermetic passage has an outlet in the discharge muffler. At the outlet, the bifurcated refrigerant joins and flows out of the substantially annular hermetic passage so as to reduce pressure pulsation of the compressed refrigerant by canceling pressure pulsation components contained in the bifurcated refrigerant. In order to enhance the cancellation effect, the outlet may be arranged at a position which is opposite, in a diametrical direction, to a position where the substantially annular hermetic passage communicates with the communication passage.

REFERENCES:
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patent: 3279683 (1966-10-01), Kleinlein
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patent: 5164552 (1992-11-01), Pandeya et al.
patent: 5173034 (1992-12-01), Riffe
patent: 5205719 (1993-04-01), Childs et al.

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