Tunnel furnace energy management system equipment

Abstract

The utility model discloses energy management system equipment of a tunnel furnace, which relates to the technical field of tunnel furnaces and comprises a tunnel furnace body, a circulating hot water mechanism is arranged at the front section of the tunnel furnace body, a plurality of smoke exhaust mechanisms are arranged at the middle section of the tunnel furnace body, each smoke exhaust mechanism comprises a smoke exhaust hood, and the smoke exhaust hoods are arranged in the tunnel furnace body. The smoke exhaust hood is fixed to a smoke opening formed in the top of the tunnel furnace body, and a control valve is arranged at an outlet in the top of the smoke exhaust hood. The smoke exhaust mechanism used for exhausting waste gas is arranged on the top of the tunnel furnace body, the smoke exhaust mechanism is provided with the control valve capable of being electrically controlled in use, and therefore the smoke exhaust speed of the device can be flexibly and conveniently adjusted; the waste heat of smoke can be fully utilized to heat circulating hot water, so that resources can be fully utilized, and the purposes of saving resources, saving energy and reducing emission are achieved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel furnace technology, specifically a tunnel furnace energy management system device. Background Technology

[0002] A tunnel oven (food processing type) is a tunnel-shaped mechanical device that bakes food through heat conduction, convection, and radiation. The oven body is generally very long, ranging from a minimum of 6 meters to 60-80 meters. The baking chamber is a narrow tunnel, typically 80-140 cm wide. A continuously operating conveyor system runs within the tunnel. During baking, the food moves relative to the heating elements or direct-fired burners via conveyor chains, steel belts, or mesh belts. This ensures uniform baking and conveying. These ovens can operate continuously, offering high production efficiency, labor savings, and consistent baking quality. They are primarily used in industrialized food production, characterized by large-scale continuous or intermittent baking.

[0003] A mooncake baking tunnel oven was proposed in Chinese Patent Publication No. CN202456215U. After studying the prior art and the above-mentioned patent, it was found that the existing tunnel ovens cannot fully recover the heat generated by the flue gas. Therefore, this utility model proposes a tunnel oven energy management system device. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a tunnel furnace energy management system device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel furnace energy management system device, including a tunnel furnace body, wherein a circulating hot water mechanism is provided at the front section of the tunnel furnace body, and multiple exhaust mechanisms are provided at the middle section of the tunnel furnace body.

[0007] The exhaust system includes an exhaust hood fixed at the flue gas outlet at the top of the tunnel furnace body. A control valve is installed at the top outlet of the exhaust hood, and a pull-out gate is installed at the bottom inlet. The circulating hot water system includes a tube heat exchanger connected to the top outlet of the exhaust hood. A circulating water outlet and inlet are located on one side of the tube heat exchanger. A flue gas outlet is located at the end of the tube heat exchanger furthest from the top outlet of the exhaust hood. The circulating water inlet is connected to a water storage tank via a pipe and a circulating water pump. The circulating water outlet is connected to the water storage tank via another pipe. The water storage tank is also connected to a booster pump. By installing an exhaust system at the top of the tunnel furnace body, equipped with an electrically controllable valve, the exhaust rate can be flexibly and conveniently adjusted. Furthermore, by incorporating a circulating hot water system into the exhaust system, the waste heat of the flue gas can be fully utilized to heat the circulating hot water, ensuring resource efficiency and achieving resource conservation, energy saving, and emission reduction.

[0008] Preferably, the control valve includes an electric actuator, and the control valve also includes a plurality of butterfly valve plates rotatably mounted on the top outlet of the fume hood. One end of each of the plurality of butterfly valve plates is keyed to a connecting plate, and the plurality of connecting plates are rotatably connected to a connecting rod via a pin structure.

[0009] Preferably, the output end of the electric actuator is connected to one of the butterfly valve plates to control the rotation of the butterfly valve plate.

[0010] Preferably, the middle section of the tunnel furnace body is also provided with a combustion air mechanism and a combustion gas mechanism.

[0011] Preferably, the tunnel furnace body is equipped with an inlet detection switch at the inlet and an openable electric furnace door at the outlet.

[0012] Preferably, the water storage tank is provided with a water source inlet at the top and a sewage outlet at the bottom. Beneficial effects

[0013] Compared with existing technologies, this tunnel furnace energy management system has the following advantages:

[0014] This invention features a flue gas exhaust mechanism installed at the top of the tunnel furnace body. The exhaust mechanism is equipped with an electrically controllable valve, allowing for flexible and convenient adjustment of the exhaust gas rate. Furthermore, by installing a circulating hot water mechanism on the exhaust mechanism, the residual heat of the flue gas can be fully utilized to heat the circulating hot water, thus maximizing resource utilization and achieving the goals of resource conservation, energy saving, and emission reduction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the structure of the water storage tank of this utility model;

[0019] Figure 4 This is a side view of the water storage tank of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the shell-and-tube heat exchanger of this utility model;

[0021] Figure 6 This is a schematic diagram of the smoke exhaust mechanism of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the control valve of this utility model;

[0023] Figure 8 This is a top view of the control valve of this utility model.

[0024] In the picture:

[0025] 1. Tunnel furnace body; 2. Circulating hot water mechanism; 201. Shell and tube heat exchanger; 202. Circulating water outlet; 203. Circulating water inlet; 204. Flue gas outlet; 205. Pipeline; 206. Circulating water pump; 207. Water storage tank; 208. Pipeline II; 209. Booster pump; 210. Water source inlet; 211. Sewage outlet; 3. Smoke exhaust mechanism; 301. Smoke hood; 302. Control valve; 303. Gate; 3021. Electric actuator; 3022. Butterfly valve plate; 3023. Connecting plate I; 3024. Connecting rod II; 4. Combustion air mechanism; 5. Combustion gas mechanism; 6. Furnace inlet detection switch; 7. Electric furnace door. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 8 As shown, this utility model provides a technical solution: a tunnel furnace energy management system device, including a tunnel furnace body 1, a circulating hot water mechanism 2 is provided at the front section of the tunnel furnace body 1, and multiple exhaust mechanisms 3 are provided at the middle section of the tunnel furnace body 1.

[0028] The exhaust mechanism 3 of this application includes an exhaust hood 301, which is fixed to the flue gas inlet 101 at the top of the tunnel furnace body 1. A control valve 302 is provided at the top outlet of the exhaust hood 301, and a pull-out gate 303 is provided at the bottom inlet of the exhaust hood 301. By providing an exhaust mechanism 3 for discharging waste gas at the top of the tunnel furnace body 1, and by having an electrically controllable control valve 302 during use, the exhaust rate of the device can be flexibly and conveniently adjusted.

[0029] The circulating hot water mechanism 2 of this application includes a shell-and-tube heat exchanger 201. The input end of the shell-and-tube heat exchanger 201 is connected to the top outlet of the exhaust hood 301. A circulating water outlet 202 and a circulating water inlet 203 are provided on one side of the shell-and-tube heat exchanger 201. A flue gas outlet 204 is provided at the end of the shell-and-tube heat exchanger 201 away from the top outlet of the exhaust hood 301. The circulating water inlet 203 is connected to a water storage tank 207 through a pipe 205 and a circulating water pump 206. The circulating water outlet 202 is connected to the water storage tank 207 through a pipe 208. The water storage tank 207 is also connected to a booster pump 209. A water source inlet 210 is provided at the top of the water storage tank 207, and a drain outlet 211 is provided at the bottom of the water storage tank 207. By setting the circulating hot water mechanism 2 on the exhaust mechanism 3, the waste heat of the flue gas can be fully utilized to heat the circulating hot water, so that resources can be fully utilized and the purpose of saving resources, saving energy and reducing emissions can be achieved.

[0030] Please refer to the following carefully. Figure 6 , Figure 7 and Figure 8The control valve 302 includes an electric actuator 3021. The control valve 302 also includes a plurality of butterfly valve plates 3022 that are rotatably installed at the top outlet of the exhaust hood 301. One end of each of the plurality of butterfly valve plates 3022 is keyed to a connecting plate 3023. The plurality of connecting plates 3023 are rotatably connected to a connecting rod 3024 via a pin structure. The output end of the electric actuator 3021 is connected to one of the butterfly valve plates 3022 for controlling the rotation of the butterfly valve plate 3022.

[0031] Please refer to the following carefully. Figure 1 and Figure 2 The middle section of the tunnel furnace body 1 is also equipped with a combustion air mechanism 4 and a combustion gas mechanism 5. The combustion air mechanism 4 can automatically control the firepower through an electric valve installed on the air duct. The tunnel furnace body 1 is equipped with a furnace pressure detection sensor, and a furnace entry detection switch 6 is installed at the input port of the tunnel furnace body 1. The output port of the tunnel furnace body 1 is equipped with an openable and closable electric furnace door 7.

[0032] Working Principle: When the device is in use and no products are being baked, the automatic oven door lowers to reduce heat loss on both sides of the tunnel oven. At this time, the opening of the exhaust valve regulates the pressure difference between the inside and outside of the oven, ensuring a stable heating state for the gas and air systems, with the gas flow rate at a relatively low range. When the oven detects the entry of baking trays and products, the automatic oven door rises to a safe height, allowing the products to bake. At this time, the combustion air mechanism 4 and combustion gas mechanism 5 enter a constant temperature control state. The electric valve installed on the air duct automatically controls the heat output, and the exhaust valve can also adjust its size according to the combustion power, thus regulating the oven pressure. The flue gas is discharged into a heat exchanger. When the heat exchanger temperature is higher than the set value (preferably 60°C), the circulating hot water system can be activated. The circulating hot water system has a storage tank 207. The storage tank 207 has an internal temperature detection system. When the actual water temperature is lower than the set water temperature and the temperature of the storage tank 207 is lower than the heat exchanger temperature, the circulating water pump starts circulating the water. The water inside the storage tank 207 flows through the circulating water pump 206, through the heat exchanger 201 installed on the flue, and back to the storage tank 207. The storage tank 207 has a water inlet 210 at the top and is equipped with a mechanical water supply valve. It automatically replenishes water when the water level is low and stops replenishing water when the water level is high. Generally, the water supply inlet can be connected to tap water or other heatable water sources. The storage tank 207 has an outlet on the side for connecting to a booster pump 209 to supply hot water to the area where hot water is needed. The bottom of the storage tank 207 has a drain outlet 211 for cleaning, which can be used to periodically clean impurities and dirt from the tank. For safety, water tanks can also be equipped with pressure detection and pressure relief devices.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel furnace energy management system device, comprising a tunnel furnace body, characterized in that: The tunnel furnace body has a circulating hot water mechanism at its front section and multiple exhaust mechanisms at its middle section. The exhaust mechanism includes an exhaust hood, which is fixed at the flue gas inlet at the top of the tunnel furnace body. A control valve is provided at the top outlet of the exhaust hood, and a pull-out gate is provided at the bottom inlet of the exhaust hood. The circulating hot water system includes a shell-and-tube heat exchanger. The input end of the shell-and-tube heat exchanger is connected to the top outlet of the exhaust hood. A circulating water outlet and a circulating water inlet are provided on one side of the shell-and-tube heat exchanger. A flue gas outlet is provided at the end of the shell-and-tube heat exchanger away from the top outlet of the exhaust hood. The circulating water inlet is connected to a water storage tank through a pipe and a circulating water pump. The circulating water outlet is connected to the water storage tank through a second pipe. The water storage tank is also connected to a booster pump.

2. The tunnel furnace energy management system equipment according to claim 1, characterized in that: The control valve includes an electric actuator and also includes multiple butterfly valve plates rotatably mounted on the top outlet of the fume hood. One end of each of the multiple butterfly valve plates is keyed to a connecting plate, and the multiple connecting plates are rotatably connected to a connecting rod via a pin structure.

3. The tunnel furnace energy management system equipment according to claim 2, characterized in that: The output end of the electric actuator is connected to one of the butterfly valve plates to control the rotation of the butterfly valve plate.

4. The tunnel furnace energy management system equipment according to claim 1, characterized in that: The middle section of the tunnel furnace body is also equipped with a combustion air mechanism and a combustion gas mechanism.

5. The tunnel furnace energy management system equipment according to claim 1, characterized in that: The tunnel furnace body is equipped with an inlet detection switch at its inlet and an openable electric furnace door at its outlet.

6. The tunnel furnace energy management system equipment according to claim 1, characterized in that: The water storage tank is provided with a water inlet at the top and a sewage outlet at the bottom.

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