Autoclaves

Details Autoclaves Autoclaves

1990-10-22

1992-09-08

Kummert, Lynn M.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using direct contact steam to disinfect or sterilize

422106, 422295, 422298, A61L 206

Patent

active

051456419

ABSTRACT:
An autoclave has a water level sensor in a water reservoir in the pressure vessel. An external water tank is connected to the reservoir via an electrically-operated valve. An electrical resistance heating element in the reservoir heats the sensor if it indicates a full level at the start of operation, in order to dry any exposed part of the sensor and thereby prevent an erroneous output from the sensor caused by water clining to it. This heating of the sensor can be repeated if it continues to indicate a full level. If a low level output is produced by the sensor, the valve is opened to allow water to flow from the tank to the reservoir. If the valve remains open for longer than a predetermined time without the sensor indicating a full level, the autoclave produces a fault signal.

REFERENCES:
patent: 2848666 (1958-08-01), Zito
patent: 3574529 (1971-04-01), Larro
patent: 3584643 (1971-06-01), Burke
patent: 3657556 (1972-04-01), Foster
patent: 3905243 (1975-09-01), Goldfuss
patent: 3967494 (1976-07-01), Joslyn
patent: 4125021 (1978-11-01), Kamei et al.
patent: 4781898 (1988-11-01), Jones
patent: 4865814 (1989-09-01), Childress
patent: 4891188 (1990-01-01), Albright et al.

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