| 摘要 |
A gas powered pressureless steam cooker comprises at least one cooking compartment having a steam inlet, at least one steam generator located in close proximity to the cooking compartment, and connector means connecting a steam outlet of the steam generator to the steam inlet of the cooking compartment. The steam generator comprises at least one inshot gas burner, and an integrated heat exchanger unit/firebox within a water reservoir, the integrated heat exchanger unit/firebox being in heat exchange relationship with water within the water reservoir to create steam from water. The 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 upp er vertical web spacing the middle horizontal leg below the upper horizontal leg. The upper vertical web forms a chamber communicating with a front end of the upper leg and a front end of the middle leg, and is provided with a horizontal channel extending through the chamber from sid e to side orthogonal to the axis of the upper horizontal leg. Preferably, the steam cooker comprises a ten or twelve tray cooker having two compartments stacked one on top of the othe r or side-by-side,each compartment being served by one steam generator. The st eam generators are preferably independently operable and are mounted side by side in a base compartment below the cooking compartments.
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