Pumps – By heating of pumped fluid
Patent
1990-04-30
1991-09-24
Smith, Leonard E.
Pumps
By heating of pumped fluid
417 53, 62498, F04F 1100
Patent
active
050510665
ABSTRACT:
A compressor which sweeps a localized region of electromagnetic or ultrasonic energy through a gas at the speed of sound, in order to create and maintain a high pressure acoustic pulse in the gas. The compressions and rarefactions associated with this pulse comprise a pressure cycle, by which a low pressure gas is drawn into a pulse chamber, compressed therein, and then discharged as a high pressure gas. By choosing a sweep velocity equal to the speed of sound in the gas, three independent physical effects are synergistically coupled together. This effect-coupling induces a natural pressure amplification, whereby the pulse's pressure exceeds the sum of the pressures which would result from the individual effects. Operation of the compressor requires no moving parts, other than valves, to come in contact with the gas being compressed and conveyed. Therefore, no oil comes in contact with the gas. This compressor is particularly well suited for refrigeration applications, and provides an efficient oil-less refrigeration compressor.
REFERENCES:
patent: 3272598 (1966-09-01), Hansel
Scheuermann David W.
Smith Leonard E.
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