Convection heat transfer apparatus
AssigneePatentsmith Corporation
InventorsDonald P. Smith, Michael J. Dobie, Alden B. Sparman, Sr., John R. Norris
Life of this patent
Estimating the term…
Abstract
Apparatus for transferring heat between temperature controlled air dispensed from a pair of oscillating ducts and a food product in a cabinet having an interior compartment bounded by front, side and rear walls. A foraminous partition, having a central portion and extremities, is mounted to divide the interior of the cabinet into a cooking chamber and an air conditioning chamber. It is configured to encircle a portion of the cooking chamber such that the air conditioning chamber extends around a major part of the periphery of the cooking chamber wherein air is drawn along multiple paths toward side walls and toward the rear wall from the cooking chamber.
Claims19
Apparatus for transferring heat between temperature controlled air and a food product comprising:
- a cabinet having an interior compartment;
- front, side and rear walls forming a periphery extending around said compartment;
- a plenum wall, said plenum wall forming a plenum in said compartment having an opening to provide an air return path;
- foraminous partition means having passages formed therein;
- means mounting said foraminous partition means spaced from said plenum wall and extending across said air return path for dividing the interior of the cabinet into a cooking chamber and an air conditioning chamber;
- air circulating means drawing air from said cooking chamber through said foraminous partition means and through said opening in said plenum wall to pressurize said plenum;
- temperature control means in said air conditioning chamber for controlling temperature of air in said air conditioning chamber;
- air dispenser means;
- and
- means mounting said air dispenser means to receive pressurized air from said plenum and to dispense a stream of air into said cooking chamber, said foraminous partition means having a surface area around said passages that is larger than the cross-sectional area of said return path, the sum of the areas of said passages being greater than one-half of the cross-sectional area of said opening into said plenum such that surfaces on said partition means form a foraminous wall across said air return path to collect splattered material.
Apparatus for transferring heat between temperature controlled air and a food product comprising:
- a cabinet having front, side and rear walls having surfaces forming a periphery around an interior compartment;
- a plenum in said compartment having an opening to provide an air return path;
- a foraminous partition having passages formed therein, said foraminous partition having a surface area around said passages that is larger than the cross-sectional area of said return path, the sum of the areas of the passages in said foraminous partition being greater than one-half of the cross-sectional area of said opening forming an air return path such that surfaces on said foraminous partition form a foraminous wall across said air return path;
- means mounting said foraminous partition across said air return path for dividing the interior of the cabinet into a cooking chamber and an air conditioning chamber;
- temperature control means in said air conditioning chamber for controlling temperature of air in said air conditioning chamber;
- an air dispenser communicating with said plenum and said cooling chamber;
- air circulating means drawing air from said cooking chamber through said foraminous partition means and through said opening in said plenum wall to pressurize said plenum;
- and
- means maintaining said foraminous partition at a cooler temperature than the temperature of surfaces on said front, side and rear walls by passing air in said cooking chamber over a cold product before the air is drawn through said foraminous partition such that a surface of said foraminous partition collects splattered material which deposits on cooler portions of oven surfaces.
Dependencies are inferred from the claim text.