A tunnel-type self-cleaning baking machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN CAIJI FOOD CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
Existing baking machines suffer from poor conveying stability, low cleaning efficiency, and inaccurate temperature control. In particular, the conveyor belt is prone to loosening and slipping during high-temperature baking, and the adhesion of grease residue makes cleaning difficult, and the baking is uneven.
The chain-type mesh belt is dynamically tensioned by a triangularly distributed tensioning roller linked with a swing drive mechanism. A cleaning device is integrated on one side of the third tensioning roller, which achieves synchronous cleaning during operation by rotating a brush roller. At the same time, multi-zone heating and independent exhaust devices are linked to ensure uniform distribution of hot air and removal of moisture.
It achieves stable conveying and automatic cleaning of chain conveyor belts, avoids belt slippage and improves production continuity and cleaning efficiency, ensures food safety, and solves the problems of uneven baking and moisture discharge through precise temperature control and ventilation.
Smart Images

Figure CN224420833U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to the field of cooking device technology, specifically to a tunnel-type self-cleaning baking machine. [Background Technology]
[0002] Grilled foods, such as barbecue and roasted meat, are highly favored in modern life due to their unique deliciousness. To meet the need for grilling various foods, a wide variety of baking machines have emerged. However, existing baking machines still have the following shortcomings:
[0003] 1. Poor conveying stability: The mesh belt is prone to loosening and slipping under high temperature baking, leading to processing interruption;
[0004] 2. Low cleaning efficiency: Grease residue adheres to the conveyor belt, requiring manual cleaning after machine shutdown, which affects continuous production and poses a high hygiene risk;
[0005] 3. Inaccurate temperature control: Single-zone heating can easily lead to uneven baking, resulting in burnt edges and uncooked centers; the water vapor and smoke generated during the baking process cannot be discharged in time.
[0006] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. [Utility Model Content]
[0007] This invention aims to solve the aforementioned technical problems of existing baking machines by providing a tunnel-type self-cleaning baking machine. Through the linkage of three triangularly distributed tension rollers and a swing drive mechanism, the chain mesh belt is dynamically tensioned to avoid slackness, deviation, or slippage. At the same time, the cleaning device is directly integrated on one side of the third tension roller to simultaneously clean grease residue on the chain mesh belt during operation, ensuring food safety and long-term smooth operation of the chain mesh belt.
[0008] This utility model is implemented as follows: a tunnel-type self-cleaning baking machine includes a conveying device, a heating device, a tensioning device, and a cleaning device; the conveying device includes a support, a chain-type mesh belt, and a conveying drive mechanism for driving the chain-type mesh belt to rotate; the heating device includes multiple baking mechanisms disposed above the chain-type mesh belt; the tensioning device includes a first tensioning roller, a second tensioning roller, a third tensioning roller, and a swing drive mechanism for driving the third tensioning roller to swing in a triangular arrangement, the first tensioning roller and the second tensioning roller are at the same height, and the third tensioning roller is disposed below the first tensioning roller and the second tensioning roller; the chain-type mesh belt extends and winds sequentially from the top of the first tensioning roller, the bottom of the third tensioning roller, and the top of the second tensioning roller; the cleaning device is installed on one side of the third tensioning roller for cleaning the chain-type mesh belt.
[0009] Furthermore, the swing drive mechanism includes a first swing plate and a second swing plate disposed on opposite sides of the support. The first end of the first swing plate is rotatably connected to the support and the second end is rotatably connected to the third tension roller. The first end of the second swing plate is rotatably connected to the support and the second end is rotatably connected to the third tension roller.
[0010] Furthermore, the cleaning device is a rotating brush roller; the second end of the first swing plate extends to provide a first extension plate, and the first extension plate is recessed with a first groove for placing one end of the rotating brush roller; the second end of the second swing plate extends to provide a second extension plate, and the second extension plate is recessed with a second groove for placing the other end of the rotating brush roller.
[0011] Furthermore, the support includes a first horizontal plate and a second horizontal plate arranged opposite to each other; the conveying drive mechanism includes a driving roller, a driven roller, and a first motor that drives the driving roller to rotate. The two ends of the driving roller are rotatably connected to the first horizontal plate and the second horizontal plate, respectively. The two ends of the driven roller are rotatably connected to the first horizontal plate and the second horizontal plate, respectively. A chain-type mesh belt is wound around the driving roller and the driven roller. The first motor is fixedly installed on the first horizontal plate.
[0012] Furthermore, the baking mechanism includes multiple infrared heating tubes arranged side by side; the two ends of the infrared heating tubes are respectively connected to the first horizontal plate and the second horizontal plate.
[0013] Furthermore, it also includes multiple exhaust devices, with an exhaust device located on the top cover of any baking mechanism.
[0014] Furthermore, the ventilation device includes an exhaust hood and an exhaust motor, the exhaust motor being built into the exhaust hood, and an exhaust duct being connected to the top of the exhaust hood.
[0015] Furthermore, the number of baking mechanisms is at least two, and the number of exhaust devices is the same as the number of baking mechanisms.
[0016] Furthermore, a collection box is provided below the cleaning device.
[0017] Furthermore, it also includes an electrical control device that is electrically connected to the conveying device, heating device, and exhaust device; the electrical control device is equipped with a temperature control unit, a fan adjustment unit, a conveying frequency conversion adjustment unit, a timing unit, and a start / stop button.
[0018] The tunnel-type self-cleaning baking machine of this utility model has the following beneficial technical effects:
[0019] 1. High-efficiency self-cleaning: The cleaning device and tensioning device are linked to automatically remove grease and debris from the conveyor belt during operation, avoiding downtime for cleaning and improving continuous production efficiency. The triangular tensioning structure dynamically adjusts the conveyor belt tension to prevent slippage and deviation, reducing equipment failure rate.
[0020] 2. Precise temperature and ventilation control: The multi-zone baking unit has independent temperature control and ventilation system linked to ensure uniform hot air and infrared radiation, solving the problem of uneven dehydration during meat baking, while also providing targeted dehumidification, smoke removal and sterilization. [Attached Image Description]
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a structural schematic diagram of the tunnel-type self-cleaning baking machine in this utility model.
[0023] Figure 2 This is a side view of the tunnel-type self-cleaning baking machine of this utility model.
[0024] Figure 3 This is a schematic diagram of the conveying device and heating device in this utility model.
[0025] Figure 4 This is a schematic diagram of the cleaning device in this utility model.
[0026] Figure 5 This is a schematic diagram of the tensioning device and cleaning device in this utility model.
[0027] Figure label:
[0028] Conveying device 1, support 11, first horizontal plate 111, second horizontal plate 112, chain mesh belt 12, conveying drive mechanism 13, first motor 131.
[0029] Heating device 2, baking mechanism 21, infrared heating tube 211.
[0030] Tensioning device 3, first tensioning roller 31, second tensioning roller 32, third tensioning roller 33, swing drive mechanism 34, first swing plate 341, second swing plate 342, first extension plate 343, first groove 344, second extension plate 345, second groove 346.
[0031] Cleaning device 4.
[0032] 5. Ventilation device 5, ventilation hood 51, ventilation duct 52.
[0033] Collection Box 6.
[0034] 7. Electrical control device.
Detailed Implementation Methods
[0035] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0036] Please see Figures 1 to 5As shown, this utility model provides a tunnel-type self-cleaning baking machine, including a conveying device 1, a heating device, a tensioning device 3, and a cleaning device 4; the conveying device 1 includes a support 11, a chain mesh belt 12, and a conveying drive mechanism 13 that drives the chain mesh belt 12 to rotate; the heating device includes multiple baking mechanisms 21 disposed above the chain mesh belt 12, and the multiple baking mechanisms 21 realize zoned temperature control; the tensioning device 3 includes a first tensioning roller 31, a second tensioning roller 32, and a third tensioning roller 33 arranged in a triangular pattern. The system includes a swing drive mechanism 34 that drives the third tension roller 33 to swing. The first tension roller 31 and the second tension roller 32 are both connected to the bracket 11. The first tension roller 31 and the second tension roller 32 are at the same height. The third tension roller 33 is located below the first tension roller 31 and the second tension roller 32. The chain mesh belt 12 extends and winds around the top of the first tension roller 31, the bottom of the third tension roller 33, and the top of the second tension roller 32 in sequence. The cleaning device 4 is installed on one side of the third tension roller 33 for cleaning the chain mesh belt 12.
[0037] The three tensioning rollers distributed in a triangular pattern are linked with the swing drive mechanism 34 to achieve dynamic tensioning of the chain mesh belt 12, avoiding slackness, deviation or slippage; at the same time, the cleaning device 4 is directly integrated on one side of the third tensioning roller 33 to achieve synchronous cleaning of grease residue on the chain mesh belt 12 during operation, ensuring food safety and long-term smooth operation of the chain mesh belt 12.
[0038] Preferably, the chain conveyor belt 12 is a food-grade stainless steel chain conveyor belt 12. The object to be baked is placed on the chain conveyor belt 12, which provides stable conveying and adjustable speed to adapt to different processing rhythms and baking requirements.
[0039] Preferably, the swing drive mechanism 34 includes a first swing plate 341 and a second swing plate 342 disposed on opposite sides of the support 11. The first end of the first swing plate 341 is rotatably connected to the support 11, and the second end is rotatably connected to the third tension roller 33. The first end of the second swing plate 342 is rotatably connected to the support 11, and the second end is rotatably connected to the third tension roller 33. The first swing plate 341 and the second swing plate 342 are rotatably connected to the support 11, making the swing of the third tension roller 33 more stable. The second ends of the first swing plate 341 and the second swing plate 342 swing down, driving the third tension roller 33 to swing down together, thereby achieving tensioning of the chain mesh belt 12. The tension between the swing plate and the support 11 can be manually adjusted. After loosening, the swing plate is lowered to tension the chain mesh belt 12, and then the swing plate and the support 11 are tightened again.
[0040] Preferably, the cleaning device 4 is a rotating brush roller; the rotating brush roller includes a rotating roller and a plurality of brushes disposed on the outer wall of the rotating roller. A first extension plate 343 extends from the second end of the first swing plate 341, and the first extension plate 343 has a first groove 344 for placing one end of the rotating brush roller; a second extension plate 345 extends from the second end of the second swing plate 342, and the second extension plate 345 has a second groove 346 for placing the other end of the rotating brush roller. By placing the rotating brush roller in the grooves of the extension plates, automatic linkage cleaning between the rotating brush roller and the chain-type mesh belt 12 is achieved, while also facilitating the disassembly, cleaning, or replacement of the rotating brush roller.
[0041] Preferably, the support 11 includes a first horizontal plate 111 and a second horizontal plate 112 arranged opposite to each other; the conveying drive mechanism 13 includes a driving roller, a driven roller, and a first motor 131 that drives the driving roller to rotate. The two ends of the driving roller are rotatably connected to the first horizontal plate 111 and the second horizontal plate 112, respectively. The two ends of the driven roller are rotatably connected to the first horizontal plate 111 and the second horizontal plate 112, respectively. The chain-type mesh belt 12 is wound around the driving roller and the driven roller. The first motor 131 is fixedly installed on the first horizontal plate 111 and drives the driving roller to rotate.
[0042] Preferably, the baking mechanism 21 includes multiple infrared heating tubes 211 arranged side by side; the two ends of the infrared heating tubes 211 are respectively connected to the first horizontal plate 111 and the second horizontal plate 112. The infrared heating tubes 211 bake the objects placed on the chain mesh belt 12. The multiple infrared heating tubes 211 are arranged side by side and fixed across the chain mesh belt 12, so that the heat source covers the entire area and ensures that the meat is baked evenly.
[0043] Preferably, it also includes multiple exhaust devices 5, with one exhaust device 5 on the top cover of any baking mechanism 21. The exhaust device 5 is detachable and can be turned on at regular intervals. When cleaning, the surface of the infrared heating tube 211 and the inner wall of the exhaust device 5 can be cleaned with a dry cloth to remove oil stains.
[0044] Preferably, the ventilation device includes an exhaust hood 51 and an exhaust motor, the exhaust motor being built into the exhaust hood 51, and an exhaust duct 52 connected to the top of the exhaust hood 51. The number of baking mechanisms 21 is at least two, and the number of exhaust devices 5 is the same as the number of baking mechanisms 21. Each baking mechanism 21 is equipped with an infrared heating tube 211, which, combined with the top hot air circulation duct, enables uniform and rapid baking and dehydration of the meat. The exhaust hood 51 has a built-in exhaust motor that directionally exhausts the water vapor and smoke released during the baking process, maintaining a constant temperature and hygienic environment inside the exhaust hood 51. Each baking mechanism 21 is independently equipped with an exhaust device 5 to avoid cross-contamination of odors and temperature / humidity interference, or to improve sterilization and dehydration efficiency.
[0045] Preferably, there are 12 baking mechanisms 21, allowing for independent temperature control in each baking zone. The temperature of each baking mechanism 21 is set according to the type and thickness of the food.
[0046] Preferably, a collection box 6 is provided below the cleaning device 4. The collection box 6 collects the oil and residue cleaned off the chain conveyor belt 12 by the cleaning device 4, reducing the frequency of manual cleaning.
[0047] Preferably, the device also includes an electrical control unit 7 electrically connected to the conveying device 1 (conveyor drive mechanism 13), the heating device 2 (infrared heating tube 211), and the exhaust device 5 (exhaust motor). The electrical control unit 7 is equipped with a temperature control unit, a fan adjustment unit, a conveyor frequency conversion adjustment unit, a timer unit, and a start / stop button. The operation panel of the electrical control unit 7 is equipped with the temperature control unit, fan adjustment unit, conveyor frequency conversion adjustment unit, timer unit, and start / stop button, enabling precise parameter setting and reducing the operational threshold. The conveyor frequency conversion adjustment unit controls the rotation speed of the chain conveyor belt 12 to 1-10 m / min, adjusting the conveying speed to adapt to different meat product processing needs and avoid energy waste. The temperature control unit sets the temperature adjustment range for each baking mechanism to room temperature to 300℃. The timer unit is used to set the total running time or the duration per batch. The start / stop button is located in a conspicuous position; if any abnormality is detected during operation (abnormal noise, burnt smell, temperature runaway), the emergency stop button must be pressed immediately to cut off the power supply.
[0048] The tunnel-type self-cleaning baking machine of this utility model has the following beneficial technical effects:
[0049] 1. High-efficiency self-cleaning: The cleaning device 4 and tensioning device 3 are linked to automatically remove grease and debris from the conveyor belt during operation, avoiding downtime for cleaning and improving continuous production efficiency. The triangular tensioning structure dynamically adjusts the conveyor belt tension to prevent slippage and deviation, reducing equipment failure rate.
[0050] 2. Precise temperature and ventilation control: The multi-zone baking mechanism 21 has independent temperature control and ventilation device 5 linked together to ensure uniform hot air and infrared radiation, solve the problem of uneven dehydration when baking meat, and at the same time, it can directionally dehumidify, exhaust smoke and sterilize.
[0051] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.
Claims
1. A tunnel-type self-cleaning baking machine, characterized in that: Includes conveying devices, heating devices, tensioning devices, and cleaning devices; The conveying device includes a support frame, a chain-type mesh belt, and a conveying drive mechanism that drives the chain-type mesh belt to rotate. The heating device includes multiple baking mechanisms located above the chain conveyor belt; The tensioning device includes a first tensioning roller, a second tensioning roller, and a third tensioning roller arranged in a triangular pattern, as well as a swing drive mechanism for driving the third tensioning roller to swing. The first tensioning roller and the second tensioning roller are at the same height, and the third tensioning roller is located below the first tensioning roller and the second tensioning roller. A chain-type mesh belt extends and winds around the first tensioning roller, the third tensioning roller, and the second tensioning roller in sequence. The cleaning device is installed on one side of the third tension roller for cleaning the chain conveyor belt.
2. The tunnel-type self-cleaning baking machine as described in claim 1, characterized in that: The swing drive mechanism includes a first swing plate and a second swing plate disposed on opposite sides of the support. The first end of the first swing plate is rotatably connected to the support and the second end is rotatably connected to the third tension roller. The first end of the second swing plate is rotatably connected to the support and the second end is rotatably connected to the third tension roller.
3. The tunnel-type self-cleaning baking machine as described in claim 2, characterized in that: The cleaning device is a rotating brush roller; the second end of the first swing plate extends to provide a first extension plate, and the first extension plate is recessed with a first groove for placing one end of the rotating brush roller; the second end of the second swing plate extends to provide a second extension plate, and the second extension plate is recessed with a second groove for placing the other end of the rotating brush roller.
4. The tunnel-type self-cleaning baking machine as described in any one of claims 1-3, characterized in that: The support includes a first horizontal plate and a second horizontal plate arranged opposite to each other; the conveying drive mechanism includes a driving roller, a driven roller, and a first motor that drives the driving roller to rotate. The two ends of the driving roller are rotatably connected to the first horizontal plate and the second horizontal plate, respectively. The two ends of the driven roller are rotatably connected to the first horizontal plate and the second horizontal plate, respectively. A chain-type mesh belt is wound around the driving roller and the driven roller. The first motor is fixedly installed on the first horizontal plate.
5. The tunnel-type self-cleaning baking machine as described in claim 4, characterized in that: The baking mechanism includes multiple infrared heating tubes arranged side by side; the two ends of the infrared heating tubes are respectively connected to the first horizontal plate and the second horizontal plate.
6. The tunnel-type self-cleaning baking machine as described in claim 5, characterized in that: It also includes multiple exhaust devices, with an exhaust device located on the top cover of any baking unit.
7. The tunnel-type self-cleaning baking machine as described in claim 6, characterized in that: The ventilation device includes an exhaust hood and an exhaust motor. The exhaust motor is built into the exhaust hood, and an exhaust duct is connected to the top of the exhaust hood.
8. The tunnel-type self-cleaning baking machine as described in claim 7, characterized in that: The number of baking mechanisms is at least two, and the number of exhaust devices is the same as the number of baking mechanisms.
9. The tunnel-type self-cleaning baking machine as described in claim 8, characterized in that: A collection box is located below the cleaning device.
10. The tunnel-type self-cleaning baking machine as described in claim 9, characterized in that: It also includes an electrical control device that is electrically connected to the conveying device, heating device, and exhaust device; the electrical control device is equipped with a temperature control unit, a fan adjustment unit, a conveyor frequency conversion adjustment unit, a timing unit, and a start / stop button.