Vapor transfer food preparation and heating apparatus

Details Vapor transfer food preparation and heating apparatus Vapor transfer food preparation and heating apparatus

A - Human Necessities

21

B

126/73

A21B 1/24 (2006.01) F24C 3/00 (2006.01)

Patent

CA 1060741

A B S T R A C T Food preparation apparatus involves a heat transmitting zone and a heat source located remotely from the transmitting zone. Heat energy is transferred from the heat source to the transmitting zone by a fluid vapor which travels from the heat source to the transmitting zone, condenses upon the transmitting zone and then returns in a liquid state to the heat source. In one described embodiment, the apparatus includes a casing enclosing a work- ing fluid and defining a relatively large flat cooking surface. Heat energy is transferred to the working fluid from a heat source across a perforated baffle by directing products of combustion through the baffle, against a por- tion of the fluid container remote from the cooking surface. The fluid vaporizes and then travels to the portion of the enclosure defining the cooking surface where it condenses to transfer heat energy to the cooking surface. Another embodiment of this invention involves an oven wherein a fluid enclosure within the oven walls confines the vapor which transfers heat energy from a central heat source to heat transmitting surfaces.

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