Vane gas compressor having two discharge passages with the...

Details Vane gas compressor having two discharge passages with the... Vane gas compressor having two discharge passages with the...

2005-03-29

2005-03-29

Vrablik, John J. (Department: 3746)

Rotary expansible chamber devices

Positively actuated vane

C418SDIG001

Reexamination Certificate

active

06872065

ABSTRACT:
A gas compressor has a cylinder chamber provided with discharge holes. Openings are in communication with the discharge holes, respectively. Discharge passages having the same length are connected with the openings, respectively. The ends of the discharge passages are connected with a common passage. During operation of the cylinder chamber, discharge valves cause the expelled gas to produce pulsations on the upstream side of the two openings. The pulsations are shifted in phase by a half wavelength. Noise due to the pulsations is reduced, because the pulsations of the expelled gas cancel out each other when the gas flows through the common passage.

REFERENCES:
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patent: 62-162787 (1987-07-01), None
Patent Abstracts of Japan, vol. 006, No. 256 (M-179), 57151090, Dec. 15, 1982.
Patent Abstracts of Japan, vol. 009, No. 067 (M-366), 59200088, Mar. 27, 1985.
Patent Abstracts of Japan, vol. 013, No. 060 (M-796), 63263284, Feb. 10, 1989.

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