Food oven

A manually loadable oven of the conveyor type, having a manually openable exterior loading door which is thermally separated from a heatable oven chamber for maintaining the manually openable door at a temperature suitable for noninjurious human contact during heating of the oven chamber, comprising:

• a. a cabinet having therein an inner shell defining a heatable oven chamber;
• b. a conveyor within the oven chamber for moving an item to be heated through the chamber and from a chamber inlet to a chamber outlet;
• c. an inlet extending through the cabinet and the inner shell and into the oven chamber, the inlet having
• 1. a normally closed outer door movably mounted on and fastened to the cabinet;
• said outer door being manually openable for acccess to an inner door;
• 2. a normally closed inner door movably mounted on and fastened to the inner shell. said inner door being physically spaced from said outer door,
• 3. means operatively connecting the outer door to the inner door for opening the inner door as the outer door is opened, and
• 4. a pusher surface on the oven chamber side of the inner door for boosting an item to be heated from the inlet and onto the conveyor;
• and
• d. an outlet in the cabinet for discharging heated items from the oven chamber as such heated items come off the conveyor.

An oven of the conveyor type having automatic discharge of heated items off of the conveyor and out of the oven comprising:

• a. a cabinet having therein an inner shell defining a heatable oven chamber;
• b. a conveyor within the oven chamber for moving an item to be heated through the chamber and from a chamber inlet to a chamber outlet;
• c. an inlet in and through the cabinet and the inner shell for placing an item to be heated upon the conveyor;
• and
• d. an outlet through the cabinet and the inner shell for discharging heated items out of the oven as they come off the conveyor, the outlet having
• 1. a discharge chute extending downward from a bottom of the oven chamber shell,
• 2. an outlet frame mounted to a base of the cabinet, the outlet frame being separate from and at a lower end of the discharge chute,
• 3. an insulation wrap of a rigid insulating material mounted around and adjoining the discharge chute and the outlet frame;
• and
• 4. a normally closed outlet door mounted in and to the discharge chute, the outlet door normally closing the outlet.

An oven of the conveyor type having a common source of motor-power for both the conveyor and an oven cooling fan comprising:

• a. a cabinet having an exterior shell and an inner shell, the inner shell defining a heatable oven chamber;
• b. a conveyor inside of the inner shell for moving an item to be heated through the oven chamber;
• c. means providing access through the cabinet into the oven chamber for loading items to be heated upon the conveyor and for unloading heated items from the conveyor;
• d. a friction drive connected to the conveyor for driving the conveyor and moving items to be heated through the chamber;
• e. a fan mounted in the cabinet and fluidly connected to the cabinet for moving a flow of ambient air into the cabinet and between the inner and exterior shells and thence to ambient, for cooling the exterior shell while the oven chamber and the inner shell are heated;
• and
• f. a single electric fan motor connected to both the friction drive and the fan with the fan being directly mounted on an output shaft of the motor, for simultaneously driving of both the conveyor and the fan by the single fan motor.

A manually loadable oven of the conveyor type having a manually openable loading door which is thermally separated from a heatable oven chamber for maintaining the manually openable door at a temperature suitable for noninjurious human contact thereagianst while the oven chamber is heated, comprising:

• a. a cabinet having therein an inner shell defining a heatable oven chamber;
• b. a conveyor within the oven chamber for moving an item to be heated through the chamber and from a chamber inlet to a chamber outlet;
• c. an outlet in the cabinet for discharging heated items from the oven chamber as such heated items come off the conveyor;
• d. an inlet extending through the cabinet and the inner shell for loading items to be heated upon the conveyor, said inlet having
• 1. a normally closed outer door movably mounted upon and fastened to the cabinet, said outer door being openable for access to an inner door,
• 2. an inlet aperture in and through the oven inner shell for providing access from the outer door to the conveyor within the oven chamber,
• 3. a normally closed inner door fitted in and normally closing the inlet aperture,
• 4. means operatively connecting the outer door to the inner door for opening the inner door as the outer door is opened;
• and
• e. means for moving a flow of ambient air between the inner and outer door while the oven chamber is heated, for cooling the outer door and maintaining the temperature of the outer door at a temperature which is safe for human contact thereagainst.