Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1998-08-06
2000-06-27
Bennett, Henry
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
62467, F25B 900
Patent
active
060792140
ABSTRACT:
A standing wave pump in which a standing compression wave is produced by a pair of diametrically opposing transducers. The vibrating surfaces of the transducers are oscillated at a frequency sufficient to generate a substantially cylindrical compression wave having substantially planar wave fronts between the transducer pair. The length of pump housing is made to be equal to an integer times half the wavelength of the compression wave and the pump housing acts as a resonant cavity having a standing wave pattern set up in it. Waves are simultaneously produced and reflected by the oscillating surface and are superimposed upon one another and travel to the opposing oscillating surface where this process is repeated, substantially multiplying the intensity of the standing compression wave, which provides a stored-energy effect. The high-intensity standing compression wave has pressure nodes and antinodes, whose pressure differential is used to pump a medium through inlets and outlets advantageously located at the nodes and antinodes.
REFERENCES:
patent: 5020977 (1991-06-01), Lucas
patent: 5357757 (1994-10-01), Lucas
patent: 5701743 (1997-12-01), Hagiwara et al.
patent: 5813234 (1998-09-01), Wighard
patent: 5867991 (1999-02-01), Jalink et al.
Bennett Henry
Clark Stephen E.
Face International Corporation
Jiang Chen-Wen
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