Ventilation regulated hot air supplied constant temperature oven

Details Ventilation regulated hot air supplied constant temperature oven Ventilation regulated hot air supplied constant temperature oven

1989-07-11

1990-09-04

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

126 21A, 219496, F24H 304

Patent

active

049546937

ABSTRACT:
A ventilation regulated hot air supplied constant temperature oven used for heat aging testing. Heated air of a predetermined temperature is supplied to a test oven body through an air supply port. Ventilation of the test oven is carried out through the air discharge port at a predetermined rate at predetermined time intervals. A discharge cylinder is provided at the discharge port, a blower is connected to the air supply port, a differential pressure detector is connected to the discharge cylinder and adapted to detect a differential pressure corresponding to the air flow rate on the basis of the data obtained in advance on the relation between a difference between the pressure at an outlet port of the blower and that at the discharge cylinder and the air flow rate, and a blower speed regulator is provided between the blower and the differential pressure detector and adapted to control the speed of the blower in accordance with an output level of a signal corresponding to a differential pressure measured by the differential pressure detector.

REFERENCES:
patent: 2098295 (1937-11-01), Kettering
patent: 2443373 (1948-06-01), Borsoff
patent: 4460332 (1984-07-01), Lawler
patent: 4512327 (1985-04-01), Stiegler
patent: 4532984 (1985-08-01), Smith
patent: 4700685 (1987-10-01), Miller
patent: 4782214 (1988-11-01), Voegtlin

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