A baking oven heat energy recycling device

Abstract

The utility model relates to baking equipment energy -conserving recovery technical field discloses a kind of baking oven heat energy recycling device, including baking oven body, the upper surface of baking oven body is fixedly connected with exhaust pipe, the outer wall of exhaust pipe is fixedly connected with pipeline one, the outer wall of pipeline one is fixedly connected with hot gas inlet, the outer wall of hot gas inlet is fixedly connected with plate heat exchanger, the outer wall of plate heat exchanger is fixedly connected in the outer wall of baking oven body, the inside of plate heat exchanger is fixedly connected with cold gas outlet, the outer wall of cold gas outlet is fixedly connected with pipeline two, the outer wall of pipeline two is fixedly connected with air inlet pipe.In the utility model, through the cooperation between baking oven body, exhaust pipe, pipeline one, hot gas inlet, plate heat exchanger, cold gas outlet, pipeline two and air inlet pipe, cold air can be preheated before entering burner, reduce the gas quantity required when ignition temperature, and then reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving and recycling technology of baking equipment, and in particular to a device for recycling the heat energy of a baking oven. Background Technology

[0002] Baking ovens, as important equipment in industrial production and food processing, are widely used in metal heat treatment, ceramic building material firing, and food baking. Currently, most commonly used baking ovens employ gas as their heating energy source. During operation, gas-fired baking ovens generate high-temperature heat by burning natural gas or liquefied petroleum gas through a burner, which is used to heat the furnace chamber and the materials to be processed.

[0003] In existing technologies, gas-fired baking ovens emit large amounts of high-temperature flue gas after completing the heating process. The temperature of this flue gas is generally between 150°C and 300°C, and it contains sensible heat energy that has not yet been utilized. Direct emission through a chimney not only results in significant energy waste but also increases fuel consumption and production costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a baking oven heat energy recycling device, which aims to improve the problem of large energy waste caused by the inability to recycle high-temperature exhaust gas, increasing fuel consumption and production costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A baking oven heat energy recycling device includes a baking oven body. An exhaust pipe is fixedly connected to the upper surface of the baking oven body. A first pipe is fixedly connected to the outer wall of the exhaust pipe. A hot air inlet is fixedly connected to the outer wall of the first pipe. A plate heat exchanger is fixedly connected to the outer wall of the hot air inlet. The outer wall of the plate heat exchanger is fixedly connected to the outer wall of the baking oven body. A cold air outlet is fixedly connected to the inside of the plate heat exchanger. A second pipe is fixedly connected to the outer wall of the cold air outlet. An air inlet pipe is fixedly connected to the outer wall of the second pipe. The outer wall of the air inlet pipe is fixedly connected to the inside of the baking oven body. An exhaust assembly is provided inside the plate heat exchanger.

[0007] Through the above technical solution: when the baking oven is working, a large amount of high-temperature flue gas is generated. The flue gas is discharged through the exhaust pipe, and then transported to the hot air inlet through pipe one, entering the interior of the plate heat exchanger to preheat the cold air inside the plate heat exchanger. The preheated cold air is then transported to the interior of pipe two through the cold air outlet, and finally enters the air inlet pipe. The heated air can greatly reduce the amount of gas required for the burner to ignite and heat up, thus saving energy, reducing consumption, and lowering production costs.

[0008] Preferably, the exhaust assembly includes a hot gas outlet, the outer wall of which is fixedly connected to the interior of a plate heat exchanger, and a cold gas inlet is fixedly connected to the interior of the plate heat exchanger.

[0009] Preferably, a fixed frame is fixedly connected to the outer wall of the cold air inlet, and a U-shaped block is slidably connected to the inner wall of the fixed frame.

[0010] Preferably, a pull ring is fixedly connected to the outer wall of the U-shaped block, and a locking block is fixedly connected to the outer wall of the U-shaped block.

[0011] Preferably, the outer wall of the card block is provided with a filter element, and the outer wall of the filter element is disposed on the inner wall of the fixed frame.

[0012] Preferably, a handle is fixedly connected to the upper surface of the filter element.

[0013] Preferably, a spring is fixedly connected to the inner wall of the U-shaped block, and the outer wall of the spring is fixedly connected to the inner wall of the fixed frame.

[0014] Preferably, the outer wall of the card block is provided with a filter plate, the outer wall of the filter plate is provided on the inner wall of the fixed frame, and the upper surface of the filter plate is fixedly connected to the lower surface of the handle.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, through the cooperation between the baking oven body, exhaust pipe, pipe one, hot air inlet, plate heat exchanger, cold air outlet, pipe two and air inlet pipe, cold air can be preheated before entering the burner, reducing the amount of gas required for ignition and heating, thereby reducing production costs.

[0017] 2. In this utility model, the cooperation between the fixed frame, U-shaped block, pull ring, locking block, filter element, handle and spring can not only prevent impurities from entering the interior of the plate heat exchanger and ensure stable heat exchange performance, but also reduce the amount of maintenance work in the later stage. Attached Figure Description

[0018] Figure 1 This is a perspective view of a baking oven heat energy recycling device proposed in this utility model;

[0019] Figure 2 This is a partial structural diagram of a plate heat exchanger for a baking oven heat energy recycling device proposed in this utility model.

[0020] Figure 3 This is a partial structural diagram of a U-shaped block for a baking oven heat energy recycling device proposed in this utility model;

[0021] Figure 4This is a partial structural diagram of the filter plate of a baking oven heat energy recycling device proposed in this utility model.

[0022] Legend:

[0023] 1. Baking oven body; 2. Exhaust pipe; 3. Pipe 1; 4. Hot air inlet; 5. Plate heat exchanger; 6. Cold air outlet; 7. Pipe 2; 8. Air inlet pipe; 9. Hot air outlet; 10. Cold air inlet; 11. Fixing frame; 12. U-shaped block; 13. Pull ring; 14. Locking block; 15. Filter element; 16. Handle; 17. Spring; 18. Filter plate. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1:

[0026] Reference Figure 1 and Figure 2 An embodiment of this utility model provides a baking oven heat energy recycling device, including a baking oven body 1, an exhaust pipe 2 fixedly connected to the upper surface of the baking oven body 1, a pipe 3 fixedly connected to the outer wall of the exhaust pipe 2, a hot air inlet 4 fixedly connected to the outer wall of the pipe 3, a plate heat exchanger 5 fixedly connected to the outer wall of the hot air inlet 4, the outer wall of the plate heat exchanger 5 fixedly connected to the outer wall of the baking oven body 1, a cold air outlet 6 fixedly connected to the inside of the plate heat exchanger 5, a pipe 7 fixedly connected to the outer wall of the cold air outlet 6, an air inlet pipe 8 fixedly connected to the outer wall of the pipe 7, the outer wall of the air inlet pipe 8 fixedly connected to the inside of the baking oven body 1, and an exhaust assembly provided inside the plate heat exchanger 5.

[0027] Specifically, the oven body 1 is heated by gas. When the gas oven burns natural gas, it produces a large amount of high-temperature exhaust gas, which is discharged from the exhaust pipe 2. The high-temperature exhaust gas is transported to the hot air inlet 4 and the interior of the plate heat exchanger 5 through pipe 3. This heats the cold air in another cold air pipe inside the plate heat exchanger 5. The heated air is then discharged through the cold air outlet 6 and transported to the air inlet pipe 8 through pipe 7. The air inlet pipe 8 then transports the air to the burner. Since the air temperature has been heated, it is closer to the working conditions inside the oven, which allows the oven temperature to rise faster, reducing the amount of gas required for ignition and heating, thereby reducing production costs.

[0028] Reference Figure 2The exhaust assembly includes a hot air outlet 9, the outer wall of which is fixedly connected to the inside of the plate heat exchanger 5, and a cold air inlet 10 is fixedly connected to the inside of the plate heat exchanger 5.

[0029] Specifically, high-temperature exhaust gas enters the interior of plate heat exchanger 5 through hot gas inlet 4 to heat the cold air, and then can be discharged through hot gas outlet 9. Hot gas outlet 9 can be connected to exhaust gas pipeline for environmental protection and other treatments. At the same time, plate heat exchanger 5 can also provide fixed support for cold gas inlet 10. Through cold gas inlet 10, nearby air can be absorbed into the interior of plate heat exchanger 5 for heating treatment.

[0030] Reference Figure 3 A fixed frame 11 is fixedly connected to the outer wall of the air inlet 10, and a U-shaped block 12 is slidably connected to the inner wall of the fixed frame 11; a pull ring 13 is fixedly connected to the outer wall of the U-shaped block 12, and a locking block 14 is fixedly connected to the outer wall of the U-shaped block 12; a filter element 15 is provided on the outer wall of the locking block 14, and the outer wall of the filter element 15 is provided on the inner wall of the fixed frame 11; a handle 16 is fixedly connected to the upper surface of the filter element 15; a spring 17 is fixedly connected to the inner wall of the U-shaped block 12, and the outer wall of the spring 17 is fixedly connected to the inner wall of the fixed frame 11.

[0031] Specifically, the cold air inlet 10 provides fixed support for the fixed frame 11, which in turn provides sliding support for the U-shaped block 12. The U-shaped block 12 also provides fixed support for the pull ring 13 and the locking block 14. When the pull ring 13 is pulled, it causes the U-shaped block 12 to slide, which in turn causes the locking block 14 to slide. When the locking block 14 slides out of the inner wall of the filter element 15, the limiting and fixing of the filter element 15 is released. The filter element 15 provides fixed support for the handle 16. Pulling the handle 16 allows the filter element 15 to slide out of the inner wall of the fixed frame 11, achieving quick disassembly. The air entering the cold air side often contains dust, fibers, and oil mist. Impurities such as dust particles, if they directly enter the heat exchanger, will adhere to the plate surface. Long-term internal dust accumulation will lead to a decrease in heat exchange efficiency. The filter element 15 can keep the inside clean and ensure stable heat exchange performance. When the filter element 15 needs to be installed, it is placed inside the fixing frame 11. The fixing frame 11 can limit and support the spring 17. The elastic force of the spring 17 pushes the U-shaped block 12 to slide, which in turn drives the locking block 14 to slide into the inner wall of the filter element 15, thus limiting and fixing the filter element 15 and achieving a quick installation effect. When the filter element 15 needs to be replaced, the quick disassembly and assembly of the filter element 15 can improve the replacement efficiency of the filter element 15 and reduce the maintenance workload.

[0032] Example 2:

[0033] Reference Figure 4The outer wall of the card block 14 is provided with a filter plate 18, the outer wall of the filter plate 18 is provided on the inner wall of the fixed frame 11, and the upper surface of the filter plate 18 is fixedly connected to the lower surface of the handle 16.

[0034] Specifically, the filter plate 18 can be fixed to the inner wall of the fixed frame 11 by the clip 14. When the clip 14 leaves the inner wall of the filter plate 18, the filter plate 18 can also be pulled out by the handle 16 to achieve quick disassembly. When fine filtration is not required, filtration can be performed through the filter plate 18. The filter plate 18 can be cleaned by direct brushing to achieve repeated use and reduce maintenance costs.

[0035] Working principle: When the device is needed, the oven body 1 is first turned on and put into operation. When the oven body 1 is working, high-temperature exhaust gas is discharged through the exhaust pipe 2. The high-temperature exhaust gas is then transported through pipe 1 3 to the hot air inlet 4 and the interior of the plate heat exchanger 5 to heat the cooling pipes inside the plate heat exchanger 5. The heated air is then transported through the cold air outlet 6 and pipe 2 7 to the interior of the air inlet pipe 8 and then into the burner. Since the air temperature has been heated, it is closer to the working conditions inside the oven, which can make the oven temperature rise faster, reduce the amount of gas required for ignition and heating, and thus reduce production costs.

[0036] Then pull the pull ring 13, which causes the U-shaped block 12 to slide. The sliding of the U-shaped block 12 also causes the locking block 14 to slide out. This releases the limiting effect. Then, by pulling the handle 16, the filter element 15 slides out of the inner wall of the fixing frame 11, achieving a quick disassembly effect. When fixing is required, the spring force of the spring 17 pushes the U-shaped block 12 to slide. The sliding of the U-shaped block 12 also causes the locking block 14 to slide into the inner wall of the filter element 15, achieving a quick fixing effect. The filter element 15 can filter the air, preventing impurities from entering the plate heat exchanger 5 and ensuring stable heat exchange performance. The quick disassembly and assembly of the filter element 15 can improve the replacement efficiency of the filter element 15 and reduce the workload of later maintenance. Similarly, the filter plate 18 can be cleaned by direct brushing, achieving the effect of repeated use. When fine filtration is not required, replacing the filter element 15 with the filter plate 18 can reduce maintenance costs.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for recycling heat energy in a baking oven, comprising a baking oven body (1), characterized in that: An exhaust pipe (2) is fixedly connected to the upper surface of the oven body (1). A pipe (3) is fixedly connected to the outer wall of the exhaust pipe (2). A hot air inlet (4) is fixedly connected to the outer wall of the pipe (3). A plate heat exchanger (5) is fixedly connected to the outer wall of the hot air inlet (4). The outer wall of the plate heat exchanger (5) is fixedly connected to the outer wall of the oven body (1). A cold air outlet (6) is fixedly connected to the inside of the plate heat exchanger (5). A pipe (7) is fixedly connected to the outer wall of the cold air outlet (6). An air inlet pipe (8) is fixedly connected to the outer wall of the pipe (7). The outer wall of the air inlet pipe (8) is fixedly connected to the inside of the oven body (1). An exhaust assembly is provided inside the plate heat exchanger (5). The exhaust assembly includes a heat exchanger... The hot air outlet (9) is fixedly connected to the outer wall of the hot air outlet (9) inside the plate heat exchanger (5). The plate heat exchanger (5) is fixedly connected to the inside of the cold air inlet (10). The outer wall of the cold air inlet (10) is fixedly connected to the fixed frame (11). The inner wall of the fixed frame (11) is slidably connected to the U-shaped block (12). The outer wall of the U-shaped block (12) is fixedly connected to the pull ring (13). The outer wall of the U-shaped block (12) is fixedly connected to the locking block (14). The outer wall of the locking block (14) is provided with a filter element (15). The outer wall of the filter element (15) is provided on the inner wall of the fixed frame (11). The inner wall of the U-shaped block (12) is fixedly connected to the spring (17). The outer wall of the spring (17) is fixedly connected to the inner wall of the fixed frame (11).

2. The oven heat energy recycling device according to claim 1, characterized in that: A handle (16) is fixedly connected to the upper surface of the filter element (15).

3. The oven heat energy recycling device according to claim 2, characterized in that: The outer wall of the card block (14) is provided with a filter plate (18), the outer wall of the filter plate (18) is provided on the inner wall of the fixed frame (11), and the upper surface of the filter plate (18) is fixedly connected to the lower surface of the handle (16).

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