Apparatus for and method of controlling the opening and closing

Details Apparatus for and method of controlling the opening and closing Apparatus for and method of controlling the opening and closing

1989-11-08

1991-02-05

Chambers, A. Michael

Fluid handling

Processes

Affecting flow by the addition of material or energy

137341, 137828, 62 33, 62 37, F25B 202, F15C 104

Patent

active

049896261

ABSTRACT:
An apparatus for controlling the opening and closing of a channel for a liquid is arranged such that a liquid channel is closed by causing a controller to control one heat absorbing and generating part of a cooling/heating element to execute heat absorption and cooling a heat transmitting element to solidify the liquid in the channel. The apparatus is also arrangement such that the channel is opened first by causing the controller to control the same heat absorbing and generating part to execute heat generation and heating the heat transmitting element to melt the liquid solidified in the channel. A method of controlling the opening and closing of a channel according to the invention includes the steps of: solidifying a liquid in a channel by cooling it from the outside to close the channel; and opening the channel thus closed by melting the liquid solidified in the channel by the application of heat.

REFERENCES:
patent: 2942615 (1960-06-01), Dayton
patent: 3256697 (1966-06-01), Henderson
patent: 3452767 (1969-07-01), Posingies
patent: 3528449 (1970-09-01), Witte et al.
patent: 3677275 (1972-07-01), Lovelock
patent: 3721255 (1973-03-01), Suzuki et al.
patent: 3732883 (1973-05-01), Munch
patent: 3779814 (1973-12-01), Miles et al.
patent: 4066365 (1978-01-01), Staunton
patent: 4476685 (1984-10-01), Aid

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