A convection oven having a vapor collection system; water injection system; easily accessible electrical components; and a variable-speed, reversible blower is disclosed. The vapor collection system collects vapor from the cooking chamber during a cooking event, condenses the vapor, and drains the c
A convection oven having a vapor collection system; water injection system; easily accessible electrical components; and a variable-speed, reversible blower is disclosed. The vapor collection system collects vapor from the cooking chamber during a cooking event, condenses the vapor, and drains the condensed vapor. The water injection system injects water for impact against a blower wheel for dispersion into the air circulating through the cooking chamber. The electrical components are housed within a housing that in a closed position conceals the components and in a closed position exposes the components for easy access. The rotational speed and direction of the variable-speed, reversible blower is controlled during a cooking event according to predetermined speed curves which may include one or more reversal events to achieve more uniform cooking of food. A main controller is programmable via an operator input (e.g., liquid crystal display touch screen) to control operating parameters of the oven.
대표청구항▼
1. A convection oven comprising a cooking chamber for receiving food to be cooked,a blower for circulating gas through the cooking chamber,a heater for heating the gas, anda vapor collection system for collecting vapor from the cooking chamber,said vapor collection system comprising a condensing dev
1. A convection oven comprising a cooking chamber for receiving food to be cooked,a blower for circulating gas through the cooking chamber,a heater for heating the gas, anda vapor collection system for collecting vapor from the cooking chamber,said vapor collection system comprising a condensing device above the cooking chamber, said vapor collection system having an inlet communicating with the chamber for receiving vapor and an outlet for draining condensed vapor to a location outside of the cooking chamber for disposal, andwherein said condensing device comprises a coil configured for gravity feeding condensate to said outlet. 2. A convection oven as set forth in claim 1 wherein said coil comprises a plurality of turns. 3. A convection oven as set forth in claim 1 wherein said blower comprises a motor, and wherein said coil surrounds said motor. 4. A convection oven as set forth in claim 1 further comprising an enclosure on the oven defining a flow path for the movement of cooling air over said condensing device, and a fan for moving cooling air over said flow path. 5. A convection oven as set forth in claim 4 further comprising at least one baffle disposed within said enclosure for directing said cooling air to contact substantially all of the surface area of said coil. 6. A convection oven as set forth in claim 4 wherein said coil comprises tubing and fins extending radially from said tubing. 7. A convection oven as set forth in claim 1 wherein said vapor and condensate move through said coil without power assistance. 8. A convection oven as set forth in claim 1 wherein said blower comprises a blower wheel mounted above said cooking chamber for rotation about a generally vertical axis, said blower wheel comprising a plurality of blades lying generally in planes extending radially with respect to said axis of rotation, at least one of said blades comprising a water-dispersion formation, and wherein said convection oven further comprises a water injection system for injecting water downward for impact against said water-dispersion formation whereby said water is dispersed into the air circulating through the cooking chamber. 9. A convection oven as set forth in claim 8 wherein said water-dispersion formation comprises an integral extension of the blade projecting in a radial direction outward from the blade generally in the same radial plane as the blade. 10. A convection oven as set forth in claim 1 wherein said blower comprises a blower wheel mounted above said cooking chamber for rotation about a generally vertical axis, said blower wheel comprising an upper wheel member and a plurality of blades below said upper wheel member, and wherein said convection oven further comprises a water injection system for injecting water downward for impact against an upper surface of said upper wheel member whereby said water is dispersed into the air circulating through the cooking chamber. 11. A convection oven as set forth in claim 10 wherein said upper wheel member comprises a circular plate. 12. A convection oven as set forth in claim 11 wherein said circular plate has an upper surface, and wherein said water injection system delivers water to an annular region of said circular plate having no holes through which liquid can pass. 13. A convection oven as set forth in claim 10 wherein said oven is a bread making oven and wherein said cooking chamber is for baking bread, said oven further comprising a second chamber for proofing bread, a second blower for circulating air through said second chamber, and a second heater for heating the air circulating through the second chamber, and wherein said convection oven further comprises a second water injection system for delivering water to said second blower for dispersing water into the air circulating through the second chamber. 14. A convection oven as set forth in claim 13 wherein the second water injection system comprises a water supply line and an injector having a quick-release connection with the supply line. 15. A convection oven as set forth in claim 1 wherein the coil includes at least one helical turn. 16. A convection oven as set forth in claim 1 wherein the coil includes an inlet and an outlet, and the coil inlet is positioned higher than the coil outlet, andthe vapor collection system includes a vapor conduit providing communication between the inlet of the vapor collection system and the coil inlet for permitting flow of vapor from the cooking chamber to the coil inlet. 17. A convection oven as set forth in claim 16 wherein the coil includes at least one helical turn between the coil inlet and the coil outlet. 18. A convection oven as set forth in claim 17 wherein the coil includes a plurality of helical turns between the coil inlet and the coil outlet. 19. A convection oven as set forth in claim 18 wherein said blower comprises a motor, and wherein said coil surrounds said motor. 20. A convection oven as set forth in claim 5 further comprising an air inlet through which the fan moves cooling air into the enclosure, and wherein the at least one baffle is disposed in said enclosure adjacent said inlet. 21. A convection oven comprising a cooking chamber for receiving food to be cooked,a blower for circulating gas through the cooking chamber,a heater for heating the gas, anda vapor collection system for collecting vapor from the cooking chamber,said vapor collection system having an inlet communicating with the chamber for receiving vapor and an outlet for draining condensed vapor to a location outside of the cooking chamber for disposal, said vapor collection system comprising a coil including an inlet, an outlet, and at least one helical turn between the coil inlet and the coil outlet, the coil being configured for gravity feeding condensate to said outlet,wherein the coil inlet is positioned higher than the coil outlet, and the vapor collection system includes a vapor conduit providing communication between the inlet of the vapor collection system and the coil inlet for permitting flow of vapor from the cooking chamber to the coil inlet.
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