Gas convection oven and module thereof comprising a heat exchanger
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United States of America Patent
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-
Mar 20, 1990
Grant Date -
N/A
app pub date -
Jun 1, 1989
filing date -
Jun 1, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gas convection oven includes a blower and a heat exchanger which together produce a circulation of hot air through a cooking portion of the oven at a uniform speed and with a uniform temperature distribution. The heat exchanger includes a plurality of generally U-shaped tubes disposed outwardly of the blower and uniformly spaced apart in a symmetrical relationship concentric to the blower. Each of the tubes has a first end in open communication with a first collector chamber in which hot combustion gases are generated by a gas burner and a second end in open communication with a second collector chamber. An exhaust device is connected to the collector chamber for exhausting combustion gases generated by the gas burner from the oven via the second collector chamber and the tubes of the heat exchanger. The exhaust device may in turn include an ejector for aspirating the exhaust from the oven through an exhaust pipe open to the second collector chamber.
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