Mechanical valve having n-type and p-type thermoelectric element

Details Mechanical valve having n-type and p-type thermoelectric element Mechanical valve having n-type and p-type thermoelectric element

1997-10-06

1999-12-28

Freay, Charles G.

Pumps

Expansion and contraction of pump fluid

62 33, F04B 1924

Patent

active

060073020

ABSTRACT:
A micromechanical valve for communicating a fluid is constructed from n-type and p-type materials forming a peltier junction interface which can be selectively cooled to freeze the fluid into a plug to obstruct the flow of fluid, or selectively heated to melt the plug to communicate the fluid in a tube extending through the junction. A plurality of valves connected in series can be used together as a pump to pump the fluid from an inlet through the valves to an outlet. Selective heating and cooling of the junction provides varying fluid pressures and/or plugs along the tube to pump the fluid through the tube.

REFERENCES:
patent: 2910836 (1959-11-01), Karrer
patent: 2928253 (1960-03-01), Lopp et al.
patent: 3111813 (1963-11-01), Blumentritt
patent: 3197342 (1965-07-01), Neild
patent: 3779814 (1973-12-01), Miles et al.
patent: 4476685 (1984-10-01), Aid
patent: 4989626 (1991-02-01), Takagi et al.

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