Pumps – Motor driven – Magnetostrictive chamber
Patent
1989-07-12
1991-06-04
Smith, Leonard E.
Pumps
Motor driven
Magnetostrictive chamber
417557, F04B 3500
Patent
active
050209779
ABSTRACT:
A compressor for compression-evaporation cooling systems, which requires no moving parts. A gaseous refrigerant inside a chamber is acoustically compressed and conveyed by means of a standing acoustic wave which is set up in the gaseous refrigerant. This standing acoustic wave can be driven either by a transducer, or by direct exposure of the gas to microwave and infrared sources, including solar energy. Input and output ports arranged along the chamber provide for the intake and discharge of the gaseous refrigerant. These ports can be provided with optional valve arrangements, so as to increase the compressor's pressure differential. The performance of the compressor in either of its transducer or electromagnetically driven configurations, can be optimized by a controlling circuit. This controlling circuit holds the wavelength of the standing acoustical wave constant, by changing the driving frequency in response to varying operating conditions.
REFERENCES:
patent: 2050391 (1936-08-01), Spencer
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patent: 3361067 (1968-01-01), Webb
patent: 3657930 (1972-04-01), Jacobson
patent: 3743446 (1973-07-01), Mandroian
patent: 3898017 (1975-08-01), Mandroian
patent: 4516916 (1985-05-01), English et al.
Thermal and Acoustic Effects Attending Absorption of Microwaves by Gases, by W. D. Hershberger, RCA Review vol. 7 No. 3 pp. 429-430 Sep. 1946.
Smith Leonard E.
Szczecina Jr. Eugene L.
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