Patent ID: 6237469
Filing Date: 2001-05-29
Classification: A47J,F22B

Abstract:
A gas powered pressureless steam cooker, comprising:at least one cooking compartment having at least one steam inlet for steam to enter the cooking compartment;at least one steam generator having a steam outlet in communication with the steam inlet of the cooking compartment, the steam generator being located in close proximity to the cooking compartment and comprising at least one inshot burner, at least one integrated heat exchanger unit and firebox, and a water reservoir in which said steam outlet is located, the integrated heat exchanger unit and firebox being contained within the reservoir and being in heat exchange relationship with water within the water reservoir to create steam from water, the heat exchanger unit opening in a generally vertical mouth, with the inshot burner being directed into said mouth; andconnector means between said outlet and said steam inlet of said cooking compartment;wherein said heat exchanger unit comprises a substantially S-shaped tube having a lower horizontal leg, a middle horizontal leg, an upper horizontal leg, a lower vertical web spacing the lower horizontal leg below the middle horizontal leg, and an upper vertical web spacing the middle horizontal leg below the upper horizontal leg, said vertical mouth of the heat exchanger unit being located at a front end of the lower leg;and wherein the upper vertical web forms a chamber communicating with a front end of the upper leg and a front end of the middle leg, said chamber being provided with a horizontal channel extending through said chamber from side to side orthogonal to the axis of the upper leg.