Oven tunnel structure

Abstract

This invention provides an oven duct structure comprising a main body, the interior of which forms a duct. Multiple exhaust units and at least one return air unit are located on both sides of the duct, with a flow channel space formed between the exhaust and return air units. A control unit is located at the front of the main body to control the heat supply and hot air circulation. Each exhaust unit has fixed side frames on both sides, forming extensions for the vertical movement of a movable curtain. The movable curtain has through holes, and adjusting bolts are threaded through these holes and screwed into the bolt holes, allowing the movable curtain to be adjusted relative to the fixed curtain to form adjustable air outlets, thereby changing the airflow direction and volume. Through this structure, the hot air supply of each exhaust unit can be adjusted according to different baking needs, creating a more uniform hot air circulation environment within the duct. Combined with a duct structure capable of accommodating at least two carts simultaneously, this allows multiple baking trays to maintain uniform heating during large-scale baking, thus achieving practical improvements in baking quality, heat utilization efficiency, and production efficiency.

Claims

1. An oven drying tunnel structure, comprising: a main body having a drying tunnel formed therein, wherein at least eight air outlet units and at least one air return unit are respectively arranged on both sides of the drying tunnel, and a flow channel space is formed between the air outlet units and the air return unit; a control unit is provided at the front side of the main body for controlling the supply and circulation of heat source; wherein, Each air outlet unit has a fixed side frame on both sides, and each fixed side frame has an adjustment part inside, which forms a screw hole; each fixed side frame has a through part to allow a movable curtain to move in the vertical direction; the movable curtain has a through hole corresponding to the screw hole, and an adjusting bolt passes through the through hole and is screwed into the screw hole to fix the movable curtain in a predetermined position; each fixed side frame has a fixed curtain at the position corresponding to the movable curtain, so that the air outlet opening of the movable curtain can be adjusted relative to the fixed curtain to change the air outlet direction or air outlet volume.

2. The oven tunnel structure as described in claim 1, wherein, The drying tunnel of the main body can accommodate at least two vehicles simultaneously.

3. The oven tunnel structure as described in claim 2, wherein, Each cart is equipped with at least four casters and at least four frames, and each frame is provided with at least eighteen shelves spaced longitudinally, each shelf being used to support at least one baking tray.

4. The oven tunnel structure as described in claim 1, wherein, One end of the main body is provided with a door panel, which can selectively open or close the drying tunnel to maintain the airtight state inside the drying tunnel.

5. The oven duct structure as described in claim 1, wherein the movable curtain is adjustable in a vertical direction to change the air outlet cross-sectional area of ​​the corresponding air outlet unit.

6. The oven duct structure as described in claim 1, wherein the fixed curtain and the movable curtain together form an adjustable air outlet.

7. The oven duct structure as described in claim 1, wherein the return air unit is disposed at the top, bottom or side of the duct to form a hot air circulation path.

8. The oven duct structure as described in claim 1, wherein the control unit is electrically connected to a heating device, at least one circulating fan and at least one exhaust device to control the temperature and hot air circulation within the duct.

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