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Commercial hot air impingement cooking apparatus

  • US 5,345,923 A
  • Filed: 12/21/1992
  • Issued: 09/13/1994
  • Est. Priority Date: 12/02/1988
  • Status: Expired due to Term
First Claim
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1. A countertop heated air impingement oven comprising:

  • a housing;

    a cooking chamber with said housing;

    a heat conductive food support member horizontally supported within said cooking chamber;

    upper plenum means, positioned above said plate member and defining an upper boundary of said cooking chamber, for receiving a supply of heated, pressurized air and converting the received air into a spaced series of downwardly directed, relatively high velocity air jets which laterally diffuse and at least partially overlap prior to striking and evenly blanketing at least a portion of the upper side surface of said food support member in a manner transferring air heat thereto at an accelerated rate;

    lower plenum means, positioned below said plate member and defining a lower boundary of said cooking chamber, for receiving a supply of heated, pressurized air and converting the received air into a spaced series of upwardly directed, relatively high velocity air jets which laterally diffuse and at least partially overlap prior to striking and evenly blanketing the lower side surface of said food support member in a manner transferring air heat thereto at an accelerated rate;

    a vertically extending baffle structure positioned in said housing and defining on one side thereof a side boundary of said cooking chamber;

    a fan plenum positioned on the opposite side of said baffle structure within said housing, said fan plenum communicating with said upper and lower plenum means through supply passages positioned above and below said baffle structure, and communicating with said cooking chamber through a central opening extending horizontally through said baffle structure;

    a fan impeller positioned in said fan plenum and drivable to create within said housing a recirculating flow of air which sequentially flows from said fan impeller through said supply passages into said upper and lower plenum means, through said upper and lower plenum means into said cooking chamber in the form of said impingement air jets, and from said cooking chamber through said central baffle structure opening into said fan impeller; and

    heating means for heating said recirculating flow of air to a food cooking temperature.

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