Pressure regulator for steam oven

Details Pressure regulator for steam oven Pressure regulator for steam oven

1998-08-10

2000-08-22

Pelham, Joseph

Electric heating

Heating devices

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

126 20, 126369, A21B 124, A47J 2716, F24C 1532

Patent

active

061076058

ABSTRACT:
A pressure regulator and steamer oven for cooking food at low pressure is provided which conserves water and space. The oven includes heating elements and a cooking cavity having a pool for holding water to be turned into steam. A pressure regulator mechanism attached to the rear of the steamer includes a reservoir and a float switch. A steam outlet conduit connects the cooking cavity to the reservoir and extends below the normal water level in the reservoir. The lower end of the conduit is blocked by water in the reservoir. The float switch is operable to turn off the heating elements when the pressure in the conduit exceeds a pre-determined level. Thus, the pressure regulator employs a water seal and float switch to help indirectly measure the pressure in the cooking cavity and control the heating elements accordingly. The reservoir is connected to the pool via an overflow which allows condensate to be recirculated to the cooking cavity. The steamer optionally includes a fill trough disposed above and in front of the cooking cavity and connected to the fluid reservoir for ease of filling. Further, the steamer optionally includes a pool cover with steam directing flow holes for promoting steam flow in the cooking cavity and a vent hole in the steam outlet conduit to help purge cold air on start-up.

REFERENCES:
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patent: 3774008 (1973-11-01), Maniscalco
patent: 4011805 (1977-03-01), Vegh et al.
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patent: 4995313 (1991-02-01), Delau et al.
patent: 5103076 (1992-04-01), Houkuwa
patent: 5161518 (1992-11-01), Bedford
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patent: 5549038 (1996-08-01), Kolvites
patent: 5631033 (1997-05-01), Kolvites
patent: 5802963 (1998-08-01), Cohn et al.

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