Pulse nozzle

Details Pulse nozzle Pulse nozzle

1993-01-22

1994-03-22

Hepperle, Stephen M.

Fluid handling

Systems

Multi-way valve unit

25112906, F16K 3102, F16K 3316

Patent

active

052955095

ABSTRACT:
A pulse nozzle of a reaction apparatus which obtains a very low temperature by expanding high-pressure and normal-temperature gas in heat insulation manner includes a fixed slit member disposed at an inlet of the nozzle and having a plurality of slit openings, a movable slit member having similar slit openings disposed along the fixed slit member, and two piezoelectric-crystal elements driven by an external pulse signal to slidably move the movable slit member with respect to the fixed slit member repeatedly to thereby open and close a flow of gas in the pulse manner. A plurality of the pulse nozzles are disposed in parallel to increase the capacity of the pulse nozzle.

REFERENCES:
patent: 2641871 (1953-06-01), Ray
patent: 2933100 (1960-04-01), Waterfill
patent: 4530317 (1985-07-01), Schutten
patent: 4893655 (1990-01-01), Anderson
patent: 5054522 (1991-10-01), Kowanz et al.
patent: 5076314 (1991-12-01), Ikehata et al.

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