An integrated waste heat recovery device for kitchens

Abstract

This utility model discloses an integrated waste heat recovery device for kitchens, relating to the field of kitchen waste heat recovery technology. It includes a heat exchange box, a heat exchange assembly, and a cleaning and descaling assembly. An air inlet box is fixed to the front of the heat exchange box, and an air inlet assembly is installed inside the air inlet box. The heat exchange assembly, comprising a heat exchange tube, an air inlet pipe, and an exhaust pipe, is installed inside the heat exchange box. The heat exchange tube has a serpentine structure. The cleaning and descaling assembly is installed on the outer side of the heat exchange box. In this integrated waste heat recovery device, hot flue gas can flow inside the serpentine heat exchange tube. By extending the flow path of the hot flue gas, it allows for sufficient heat exchange with the water inside the heat exchange box, achieving waste heat recovery. The cleaning and descaling assembly fills the heat exchange tube with cleaning fluid and soaks it for a period of time, dissolving and peeling away the scale buildup on the inner wall of the heat exchange tube. This allows the heat exchange tube to be used for a long time without the problem of scale buildup affecting heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of kitchen waste heat utilization technology, specifically an integrated device for kitchen-specific waste heat utilization. Background Technology

[0002] Waste heat refers to the heat that is not effectively utilized during the energy conversion or utilization process. It mainly comes from emissions such as high-temperature exhaust gas, cooling medium, flue gas, and waste liquid, as well as the heat generated during equipment operation. In the process of using kitchens, high-temperature flue gas is emitted. If this surplus heat can be recovered and reused, it will be of great significance for energy conservation.

[0003] For example, the utility model application with application number 217482818U discloses an integrated device for kitchen fume purification and waste heat recovery. Similar to the integrated waste heat recovery device mentioned above, there are still some shortcomings: it transfers the waste heat in the flue gas to the heat transfer liquid, thereby improving the heat exchange efficiency between the heat transfer liquid inside the serpentine tube and the water inside the water tank. During the flue gas heat exchange process, the contact time between the flue gas and the heat transfer liquid is short, resulting in poor heat exchange effect and relatively large heat loss. Directly using the flow of flue gas to exchange heat with water will result in the accumulation of soot and scale inside the flue gas heat exchange pipe, affecting heat exchange. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated waste heat utilization device for kitchens to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated waste heat utilization device for kitchens, comprising a heat exchange box, a heat exchange component, and a cleaning and descaling component. An air inlet box is fixed to the front of the heat exchange box, and an air inlet component is installed inside the air inlet box. The heat exchange component is installed inside the heat exchange box, and the heat exchange component includes a heat exchange tube, an air inlet pipe, and an exhaust pipe. The heat exchange tube has a serpentine structure, and an air inlet pipe is connected to the front of the heat exchange tube, and an exhaust pipe is connected to the upper rear side of the heat exchange tube. A cleaning and descaling component is installed on one side of the heat exchange box, and the cleaning and descaling component includes a liquid storage tank, a water pump, and a liquid delivery pipe. A water pump is installed on the upper side of the liquid storage tank, and a liquid delivery pipe is connected to the upper side of the water pump.

[0006] Furthermore, the air intake assembly includes an oil fume intake hood, a perforated air intake port, and a flow guide hood. The lower side of the oil fume intake hood is provided with a perforated air intake port, and the upper side of the oil fume intake hood is installed with a flow guide hood.

[0007] Furthermore, the front end of the air inlet pipe is connected to the upper end of the flow guide hood, and the air inlet pipe, flow guide hood, and fume inlet hood are interconnected.

[0008] Furthermore, the heat exchange assembly also includes a first control valve, which is installed in the middle of both the air inlet pipe and the air outlet pipe.

[0009] Furthermore, the cleaning and descaling assembly also includes a feed pipe, which is connected to the upper side of the liquid storage tank.

[0010] Furthermore, the end of the liquid delivery pipe is connected to the front side pipe of the heat exchange tube, and a drain pipe is connected to the lower front side of the heat exchange tube.

[0011] Furthermore, a second control valve is installed in the middle of both the liquid delivery pipe and the liquid discharge pipe, and a vacuum water pump is installed at the end of the liquid discharge pipe.

[0012] Furthermore, two heat exchange inlet and outlet water pipes are installed on the other side of the heat exchange box, and the heat exchange inlet and outlet water pipes are connected to the interior of the heat exchange box.

[0013] This utility model provides an integrated waste heat utilization device for kitchens, which has the following beneficial effects: This utility model is equipped with a heat exchange component. The upper and lower heat exchange inlet and outlet water pipes facilitate the water inlet and outlet of the heat exchange box. A corresponding exhaust fan can be installed at the end of the exhaust pipe. The hollow air inlet on the lower side of the fume inlet hood facilitates the entry of hot kitchen fumes. This allows the hot fumes to enter the guide hood through the fume inlet hood. The hot fumes in the guide hood can then enter the interior of the heat exchange tube and flow inside the serpentine structure of the heat exchange tube, extending the flow path of the hot fumes. This allows for sufficient heat exchange with the water inside the heat exchange box, realizing the recovery and utilization of waste heat.

[0014] This utility model is equipped with a cleaning and descaling component. When cleaning the pipeline, the first control valve at the air inlet pipe and the air outlet pipe can be closed and the second control valve at the liquid delivery pipe can be opened. Then, the cleaning liquid inside the storage tank is sent into the heat exchange tube through the water pump and the liquid delivery pipe. At this time, the cleaning liquid fills the heat exchange tube and soaks it for a period of time, which can dissolve and peel off the scale on the inner wall of the heat exchange tube. When draining the liquid, the second control valve at the drain pipe can be opened and the water in the pipeline can be effectively pumped out by the vacuum water pump. Even if there is a small amount of liquid, it will naturally vaporize when the flue gas passes through at high temperature later, so that the heat exchange tube can be used for a long time and is not prone to scale formation that affects heat exchange. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of an integrated waste heat utilization device for kitchens according to the present invention. Figure 2 This is a schematic diagram of the heat exchange component structure of an integrated waste heat utilization device for kitchens according to this utility model; Figure 3 This is a schematic diagram of the external structure of an integrated waste heat utilization device for kitchens according to the present invention. Figure 4 This is a side view of the heat exchange component of an integrated waste heat utilization device for kitchens according to this utility model.

[0016] In the diagram: 1. Heat exchanger box; 2. Air inlet box; 3. Air inlet assembly; 301. Fume inlet hood; 302. Hollowed-out air inlet; 303. Flow guide hood; 4. Heat exchanger assembly; 401. Heat exchange tube; 402. Air inlet pipe; 403. Exhaust pipe; 404. First control valve; 5. Cleaning and descaling assembly; 501. Liquid storage tank; 502. Water pump; 503. Liquid delivery pipe; 504. Feed pipe; 6. Drain pipe; 7. Second control valve; 8. Heat exchanger inlet and outlet water pipes. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] like Figure 1 and Figure 3 As shown, an integrated waste heat utilization device for kitchens includes a heat exchange box 1, a heat exchange component 4, and a cleaning and descaling component 5. An air inlet box 2 is fixed to the front of the heat exchange box 1, and an air inlet component 3 is installed inside the air inlet box 2. The air inlet component 3 includes an oil fume inlet hood 301, a perforated air inlet 302, and a guide hood 303. The perforated air inlet 302 is provided on the lower side of the oil fume inlet hood 301, and the guide hood 303 is installed on the upper side of the oil fume inlet hood 301. The front end of the air inlet pipe 402 is connected to the upper end of the guide hood 303, and the air inlet pipe 402, the guide hood 303, and the oil fume inlet hood 301 are interconnected. The perforated air inlet 302 on the lower side of the oil fume inlet hood 301 facilitates the entry of hot kitchen fumes, allowing these hot fumes to enter the guide hood 303 through the oil fume inlet hood 301 for subsequent waste heat utilization of the hot kitchen fumes.

[0019] like Figure 2 and Figure 4As shown, a heat exchange assembly 4 is installed inside the heat exchange box 1. The heat exchange assembly 4 includes a heat exchange tube 401, an air inlet pipe 402, and an air outlet pipe 403. The heat exchange tube 401 has a serpentine structure, and the air inlet pipe 402 is connected to the front side of the heat exchange tube 401, while the air outlet pipe 403 is connected to the upper rear side of the heat exchange tube 401. The heat exchange assembly 4 also includes a first control valve 404. The first control valve 404 is installed in the middle of both the air inlet pipe 402 and the air outlet pipe 403. An upper and lower control valve is installed on the other side of the heat exchange box 1. Two heat exchange inlet and outlet water pipes 8 are connected to the interior of the heat exchange box 1. The upper and lower heat exchange inlet and outlet water pipes 8 facilitate the inlet and outlet of water inside the heat exchange box 1. A corresponding exhaust fan can be installed at the end of the exhaust pipe 403 so that the hot flue gas at the guide shroud 303 can enter the interior of the heat exchange tube 401 and flow inside the serpentine structure of the heat exchange tube 401, extending the flow path of the hot flue gas, thereby fully exchanging heat with the water inside the heat exchange box 1 and realizing the recovery and utilization of waste heat.

[0020] like Figures 1-3 As shown, a cleaning and descaling assembly 5 is installed on the outer side of the heat exchanger 1. The cleaning and descaling assembly 5 includes a liquid storage tank 501, a water pump 502, and a liquid delivery pipe 503. The water pump 502 is installed on the upper side of the liquid storage tank 501, and the liquid delivery pipe 503 is connected to the upper side of the water pump 502. The cleaning and descaling assembly 5 also includes a feed pipe 504, which is connected to the upper side of the liquid storage tank 501. The end of the liquid delivery pipe 503 is connected to the front side pipe of the heat exchange tube 401, and a drain pipe 6 is connected to the lower front side of the heat exchange tube 401. A second control valve 7 is installed in the middle of both the liquid delivery pipe 503 and the drain pipe 6, and a vacuum water pump is installed at the end of the drain pipe 6. During cleaning, the first control valve 404 at the air inlet pipe 402 and the air outlet pipe 403 can be closed, and the second control valve 7 at the liquid delivery pipe 503 can be opened. Then, the cleaning liquid inside the storage tank 501 is sent into the heat exchange tube 401 through the water pump 502 and the liquid delivery pipe 503. At this time, the cleaning liquid fills the heat exchange tube 401 and soaks it for a period of time, which can dissolve and peel off the scale on the inner wall of the heat exchange tube 401. When draining, the second control valve 7 at the drain pipe 6 can be opened to effectively extract the water in the pipe through the vacuum pump. Even if there is a small amount of liquid, it will naturally vaporize when the flue gas passes through at high temperature later, so that the heat exchange tube 401 can be used for a long time and is not prone to scale formation that affects heat exchange.

[0021] In summary, as Figures 1-4As shown, in use, the two first control valves 404 are in the open state and the two first control valves 404 are in the closed state. First, the exhaust fan installed at the end of the exhaust pipe 403 draws the kitchen hot fumes into the hollow air inlet 302 on the lower side of the fume inlet hood 301 under the action of negative pressure. Then, this part of the hot fumes can enter the guide hood 303 through the fume inlet hood 301. The hot fumes at the guide hood 303 can enter the interior of the heat exchange tube 401 and flow inside the serpentine structure of the heat exchange tube 401. By extending the flow path of the hot fumes, they can fully exchange heat with the water inside the heat exchange box 1 to realize the recovery and utilization of waste heat. The upper and lower heat exchange water inlet and outlet pipes 8 facilitate the water inlet and outlet inside the heat exchange box 1. During pipe cleaning, the first control valve 404 at the air inlet pipe 402 and the exhaust pipe 403 can be closed, and the second control valve 7 at the liquid delivery pipe 503 can be opened. Then, the cleaning liquid inside the storage tank 501 is sent into the heat exchange tube 401 through the water pump 502 and the liquid delivery pipe 503. At this time, the cleaning liquid fills the heat exchange tube 401 and soaks it for a period of time, which can dissolve and peel off the scale on the inner wall of the heat exchange tube 401. When draining the liquid, the second control valve 7 at the drain pipe 6 can be opened to effectively extract the water in the pipe through the vacuum pump. Even if there is a small amount of liquid, it will naturally vaporize when the flue gas passes through at high temperature later, so that the heat exchange tube 401 can be used for a long time without the problem of scale formation affecting heat exchange. This completes the use process of the kitchen-specific waste heat utilization integrated device.

[0022] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A kitchen-specific waste heat utilization integrated device, comprising a heat exchange box (1), a heat exchange assembly (4), and a cleaning and descaling assembly (5), characterized in that, The heat exchange box (1) is fixed with an air inlet box (2) at the front, and an air inlet assembly (3) is installed inside the air inlet box (2). The heat exchange box (1) is installed with a heat exchange assembly (4), which includes a heat exchange tube (401), an air inlet pipe (402), and an exhaust pipe (403). The heat exchange tube (401) has a serpentine structure, and the air inlet pipe (402) is connected to the front of the heat exchange tube (401). The exhaust pipe (403) is connected to the upper rear side of the heat exchange tube (401). A cleaning and descaling assembly (5) is installed on one side of the heat exchange box (1). The cleaning and descaling assembly (5) includes a liquid storage tank (501), a water pump (502), and a liquid delivery pipe (503). The water pump (502) is installed on the upper side of the liquid storage tank (501), and the liquid delivery pipe (503) is connected to the upper side of the water pump (502).

2. The integrated waste heat utilization device for kitchens according to claim 1, characterized in that, The air intake assembly (3) includes an oil fume air intake hood (301), a hollow air intake port (302), and a flow guide hood (303). The lower side of the oil fume air intake hood (301) is provided with a hollow air intake port (302), and the upper side of the oil fume air intake hood (301) is provided with a flow guide hood (303).

3. The integrated waste heat utilization device for kitchens according to claim 2, characterized in that, The front end of the air inlet pipe (402) is connected to the upper end of the flow guide hood (303), and the air inlet pipe (402), the flow guide hood (303), and the fume inlet hood (301) are interconnected.

4. The integrated waste heat utilization device for kitchens according to claim 1, characterized in that, The heat exchange assembly (4) also includes a first control valve (404), and the first control valve (404) is installed in the middle of the air inlet pipe (402) and the air outlet pipe (403).

5. The integrated waste heat utilization device for kitchens according to claim 1, characterized in that, The cleaning and descaling assembly (5) also includes a feed pipe (504), which is connected to the upper side of the liquid storage tank (501).

6. The integrated waste heat utilization device for kitchens according to claim 1, characterized in that, The end of the liquid delivery pipe (503) is connected to the front side pipe of the heat exchange pipe (401), and the lower front side of the heat exchange pipe (401) is connected to the drain pipe (6).

7. The integrated waste heat utilization device for kitchens according to claim 6, characterized in that, The middle part of the liquid delivery pipe (503) and the liquid discharge pipe (6) are both equipped with a second control valve (7), and the end of the liquid discharge pipe (6) is used to install a vacuum water pump.

8. The integrated waste heat utilization device for kitchens according to claim 1, characterized in that, Two heat exchange inlet and outlet water pipes (8) are installed on the other side of the heat exchange box (1), and the heat exchange inlet and outlet water pipes (8) are connected to the interior of the heat exchange box (1).

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