A - Human Necessities – 47 – J
Patent
A - Human Necessities
47
J
A47J 27/04 (2006.01)
Patent
CA 2442398
A steam cooker has an insulated housing that surrounds an internal cooking compartment accessible through a door. In one form, a supply of water is held in the compartment and immerses a plate-like resistance heating element mounted at the floor. Water is automatically added to this supply when both 1) a water level sensor indicates a refill, and 2) a door switch signals that the door is open. These signals together open a normally-closed solenoid valve in a water feed line. A steam outlet located above the maximum water level is in fluid communication with and adjacent another electrically-operated solenoid valve that is normally open to atmosphere. In one mode of operation, a temperature sensor in close physical proximity to the steam outlet and the solenoid valve closes the solenoid wherein the sensed steam temperature is at or above a set level. The outlet steam is also connected to a pair of water column pressure-responsive microswitches that control power to the heating element and, if there is an over-pressure, to open the solenoid valve to vent the steam to atmosphere. Plural such steam cookers can operate in parallel stacked in a single cabinet, and each capable of operating in a fast cook mode where the water and power savings advantages of the electric steam trap are disabled or adjusted.
Castrichini Peter
Doran Mark J.
Manganiello Mark
Market Forge Industries Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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