Air flow control technology for ovens

An industrial, forced-convection, controlled air flow oven apparatus for cooking, smoking, drying and processing meat and food products, comprising:

• a. a floor;
• b. side walls extending generally upwardly from the floor;
• c. a generally horizontal ceiling, the ceiling having opposing peripheral ends that are spaced apart from the side walls;
• d. a housing disposed above the ceiling;
• the housing having a horizontal portion and a vertical portion extending downwardly from the horizontal portion and spaced apart from the two side walls, the horizontal portion further having a fan aperture;
• and
• e. a processing chamber adapted to contain food product to be processed, the processing chamber being disposed below the ceiling and between the side walls, and having
• i. a centerline, and
• ii. two upper corners and walls extending downwardly from the upper corners a predetermined distance,
• f. one fan disposed in the fan aperture of the housing above the processing chamber;
• g. two air supply slots in direct fluid communication with the processing chamber, separated a predetermined distance from each other and proximate respective sides of the processing chamber, for continuously transmitting air generated by the fan to the processing chamber, each air supply slot having an initial predetermined supply air flow area, each air supply slot further having a geometry with a predetermined width, and wherein the two air supply slots are defined by the vertical walls disposed below the upper corners in combination with the ceiling peripheral ends, the distance between the housing vertical portion and the side walls comprising the initial predetermined supply air flow area;
• h. a supply damper disposed proximate each air supply slot, and between the vertical walls of each air supply slot, for variably controlling the size of the supply air flow area of the respective air supply slot, the damper in use changing the width of the respective air supply slot, wherein the supply dampers are operable independently of each other;
• i. two air return slots for returning air from the processing chamber to the fan, the two air return slots being disposed in the ceiling, between the two air supply slots and off center with respect to the fan and with respect to the centerline of the processing chamber, the air supply slots further being disposed directly above the processing chamber and through a top side of the processing chamber, each air return slot having a predetermined return air flow area, each air return slot further having an initial predetermined size, and the size of each air return slot is variable to alter the airflow in the processing chamber in combination with the variable air supply slot air flow area;
• j. a return damper disposed proximate each air return slot for varying the size of the return air flow area of the respective air return slot;
• k. a control assembly comprising an actuator connected to each supply damper, and an electronic controller communicatively connected to each actuator, the actuators functioning independently of each other under the control of the electronic controller;
• l. whereby, in use, product in the processing chamber is exposed to air flow directly from the air supply slots simultaneously;
• and
• m. whereby, in use, the oven minimizes formation of relatively cold and hot zones in food product disposed in the processing chamber by ensuring that airflow is provided horizontally, vertically, and diagonally.