Integrated waste heat recovery device

Abstract

The utility model discloses an integrated waste heat recovery device, including heat exchanger, fresh air connecting subassembly, exhaust air adapter subassembly and exhaust air elbow, the heat exchanger is set to be cross ventilation structure, and the heat exchanger is provided with fresh air inlet, fresh air outlet, exhaust air inlet and exhaust air outlet, fresh air connecting subassembly is connected with fresh air inlet, exhaust air adapter subassembly is connected with exhaust air adapter subassembly, exhaust air elbow is connected with exhaust air adapter subassembly, exhaust air elbow is connected with exhaust air adapter subassembly. The fresh air outlet of the heat exchanger is connected with the fresh air connecting assembly, the exhaust switching assembly is connected with the exhaust inlet, the exhaust elbow is connected with the exhaust outlet, the fresh air outlet of the heat exchanger and the exhaust switching assembly are used for being connected with drying equipment, and the fresh air connecting assembly and the exhaust elbow are used for being connected with a drying oven. According to the integrated waste heat recovery device, high-efficiency heat energy conversion is achieved through the simple waste heat recovery device, the occupied space is small, more technical cost and maintenance cost can be saved, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to an integrated waste heat recovery device. Background Technology

[0002] Existing waste heat recovery devices are costly, structurally complex, and require a large area and factory space. Their heat exchange efficiency is only around 50%, which is relatively low. They also require regular maintenance and repair, and installation and maintenance require certain technical support and investment, resulting in relatively high maintenance costs. Furthermore, the design and operation of the entire recovery system require a high degree of integration and control, which is quite complex. Its design and installation require a certain level of technical expertise, placing high demands on the technical personnel.

[0003] Therefore, there is a need to provide an integrated waste heat recovery device to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an integrated waste heat recovery device that achieves high-efficiency thermal energy conversion using a relatively simple waste heat recovery device, while occupying less space, saving more technical and maintenance costs, and reducing energy consumption.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An integrated waste heat recovery device includes a heat exchanger, a fresh air connection assembly, an exhaust air transfer assembly, and an exhaust air bend. The heat exchanger is configured with a cross-ventilation structure and has a fresh air inlet, a fresh air outlet, an exhaust air inlet, and an exhaust air outlet. The fresh air connection assembly is connected to the fresh air inlet, the exhaust air transfer assembly is connected to the exhaust air inlet, and the exhaust air bend is connected to the exhaust air outlet. The fresh air outlet and the exhaust air transfer assembly of the heat exchanger are used to connect to a drying equipment, and the fresh air connection assembly and the exhaust air bend are used to connect to a drying oven.

[0007] As a further improvement to the above technical solution, the heat exchanger includes a frame, a heat exchange core, and a guide plate. The heat exchange core and the guide plate are both installed in the frame, and the heat exchange core is sealed and installed at the lower end of the frame. The guide plate is located at the upper end of the frame and is used to guide the fresh air blown out by the heat exchange core to the fresh air outlet.

[0008] As a further improvement to the above technical solution, the fresh air inlet is located at the lower end of the frame, the fresh air outlet and the exhaust air inlet are located on one side of the frame, the fresh air outlet is located above the exhaust air inlet, the exhaust air outlet is located on the other side of the frame, and the exhaust air inlet and the exhaust air outlet are relatively connected, as are the fresh air inlet and the fresh air outlet.

[0009] As a further improvement to the above technical solution, the guide plate is set in an arc shape, and the upper end of the guide plate is connected to the top of the frame, and the lower end of the guide plate is connected to the end of the heat exchange core away from the fresh air outlet.

[0010] As a further improvement to the above technical solution, the heat exchange core is provided with several transverse air ducts and longitudinal air ducts, and the transverse air ducts and longitudinal air ducts are arranged alternately in sequence.

[0011] As a further improvement to the above technical solution, insulation plates are provided on both sides of the heat exchange core, and the insulation plates are sealed to the frame.

[0012] As a further improvement to the above technical solution, the fresh air connection assembly includes a fan, an air inlet pipe, a variable diameter pipe, and a variable diameter pipe. The air inlet of the fan is connected to the variable diameter pipe, the air outlet of the fan is connected to the variable diameter pipe, the variable diameter pipe is connected to the fresh air inlet, and the variable diameter pipe is connected to the air inlet pipe. The air inlet pipe is used to connect to the oven.

[0013] As a further improvement to the above technical solution, a filter is installed inside the air inlet pipe.

[0014] As a further improvement to the above technical solution, the exhaust transfer assembly includes a second fan, an exhaust hose, a transfer pipe, and a third reducing pipe. The exhaust hose is connected to the air inlet of the second fan, the transfer pipe is connected to the air outlet of the second fan, and the transfer pipe is connected to the exhaust inlet of the heat exchanger through the third reducing pipe.

[0015] As a further improvement to the above technical solution, shock-absorbing rubber pads are provided at the bottom of the first and second fans.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes a relatively simple waste heat recovery device to achieve high-efficiency heat energy conversion. By arranging the heat exchanger in a cross-ventilation structure, and providing fresh air inlet, fresh air outlet, exhaust air inlet, and exhaust air outlet at both ends of the heat exchanger's ventilation duct, the heat exchanger is connected to the oven and drying equipment via a fresh air connection component, an exhaust air transfer component, and an exhaust air bend. The cold air from the drying equipment enters through the exhaust air inlet of the heat exchanger, while the fresh hot air from the oven enters through the fresh air inlet of the heat exchanger. The fresh hot air exchanges heat with the cold air as it passes through the heat exchanger, raising the temperature of the cold air before it enters the oven. This saves energy consumption of the heating device inside the oven. The structure is simple and occupies less space. Compared with existing waste heat recovery devices, it has a lower cost and saves more on technical and maintenance costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the integrated waste heat recovery device of this utility model;

[0020] Figure 2 This is a side sectional view of the integrated waste heat recovery device of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the heat exchanger of this utility model;

[0022] Figure 4 This is a schematic diagram of the heat exchange core of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the fresh air connection component of this utility model;

[0024] Figure 6 This is a structural schematic diagram of the exhaust adapter assembly of this utility model.

[0025] Attached reference numerals: 1. Heat exchanger; 11. Fresh air inlet; 12. Fresh air outlet; 13. Exhaust air inlet; 14. Exhaust air outlet; 15. Frame; 16. Heat exchange core; 161. Horizontal air duct; 162. Longitudinal air duct; 17. Guide plate; 18. Insulation board; 2. Fresh air connection assembly; 21. Fan 1; 22. Air inlet pipe; 23. Reducer 1; 24. Reducer 2; 3. Exhaust air conversion assembly; 31. Fan 2; 32. Exhaust air hose; 33. Adapter pipe; Reducer 3; 4. Exhaust air bend; 5. Shock-absorbing rubber pad. Detailed Implementation

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0027] Reference Figures 1 to 3 An integrated waste heat recovery device includes a heat exchanger 1, a fresh air connection assembly 2, an exhaust air transfer assembly 3, and an exhaust air bend 4. The heat exchanger 1 is configured with a cross-ventilation structure, allowing fresh air and hot exhaust air to pass through without interference and exchange heat at the intersection point. The heat exchanger 1 is provided with a fresh air inlet 11, a fresh air outlet 12, an exhaust air inlet 13, and an exhaust air outlet 14, which are located in four directions of the heat exchanger 1. To facilitate connection with the fresh air connection assembly 2 at the bottom of the heat exchanger 1, a mounting bracket is connected to the lower part of the heat exchanger 1. The fresh air inlet 11 is used to introduce... Fresh air passes through heat exchanger 1, where it exchanges heat with hot exhaust air at a higher temperature. The fresh air temperature increases and then enters the oven from the fresh air outlet 12. The exhaust inlet 13 is used to introduce hot exhaust air, which then passes through heat exchanger 1, where it exchanges heat with fresh air. The hot exhaust air with residual heat is then discharged from the exhaust outlet 14 and recycled, saving energy. The fresh air connection assembly 2 is connected to the fresh air inlet 11 to introduce fresh air into the heat exchanger 1. The exhaust transfer assembly 3 is connected to the exhaust inlet 13 to introduce hot exhaust air into the heat exchanger 1 and allow it to exchange heat with fresh air. The exhaust bend 4 is connected to the exhaust outlet 14 to recover the hot exhaust air that has cooled down after heat exchange. During heat exchange inside heat exchanger 1, fresh air enters from the fresh air inlet 11 of heat exchanger 1, and hot exhaust air from the oven enters from the exhaust air inlet 13 of heat exchanger 1. When the hot exhaust air passes through heat exchanger 1, it exchanges heat with the fresh air. The fresh air and hot exhaust air exchange heat without contacting each other, so that the temperature of the fresh air rises before entering the oven, thereby saving energy consumption of the heating device inside the oven and effectively improving drying efficiency.

[0028] Reference Figure 2 , Figure 3 , Figure 4 In an embodiment of this utility model, the heat exchanger 1 includes a frame 15, a heat exchange core 16, and a guide plate 17, specifically as follows: Figure 2The frame 15 is divided into upper and lower parts. The upper part is a first rectangular frame with openings on the left and lower sides. The left opening of the first rectangular frame is a fresh air outlet 12. The lower part is a second rectangular frame with openings on the left, right, and lower sides. The left opening of the second rectangular frame is an exhaust air inlet 13, the right opening is an exhaust air outlet 14, and the bottom opening is a fresh air inlet 11. The heat exchange core 16 and the guide plate 17 are both installed inside the frame 15. The frame 15 supports and fixes the heat exchange core 16 and the guide plate 17. The heat exchange core 16 is sealed and installed at the lower end of the frame 15. The guide plate 17 is located at the upper end of the frame 15 and is used to guide the fresh air blown out by the heat exchange core 16 to the fresh air outlet 12. At the same time, the frame 15 can withstand the pressure generated by the internal air flow. An electronic differential pressure gauge is also installed outside the frame 15 to monitor the differential pressure. The electronic differential pressure gauge is linked with the control equipment and can monitor the internal pressure of the device in real time to ensure the safety and stability of the production process.

[0029] Specifically, the fresh air inlet 11 is located at the lower end of the frame 15, the fresh air outlet 12 and the exhaust air inlet 13 are located on one side of the frame 15, the fresh air outlet 12 is located above the exhaust air inlet 13, and the exhaust air outlet 14 is located on the other side of the frame 15. The exhaust air inlet 13 and the exhaust air outlet 14 are connected to each other, and the fresh air inlet 11 and the fresh air outlet 12 are connected to each other. By setting clear inlet and outlet positions, it is ensured that fresh air and hot exhaust air can flow in a predetermined direction, thereby improving the efficiency and reliability of the entire waste heat recovery device.

[0030] Specifically, the guide plate 17 is designed in an arc shape, which helps to guide the fresh air after heat exchange to the fresh air outlet 12. The upper end of the guide plate 17 is connected to the top of the frame 15, and the lower end of the guide plate 17 is connected to the end of the heat exchange core 16 away from the fresh air outlet 12, ensuring that the fresh air can flow smoothly to the fresh air outlet 12 after sufficient heat exchange in the heat exchange core 16.

[0031] Specifically, the heat exchange core 16 is provided with a plurality of transverse air ducts 161 and longitudinal air ducts 162, and the transverse air ducts 161 and longitudinal air ducts 162 are arranged alternately in sequence, which helps to increase the heat exchange area between fresh air and hot exhaust air, thereby improving the heat exchange efficiency.

[0032] Specifically, insulation plates 18 are provided on both sides of the heat exchange core 16, and the insulation plates 18 are sealed to the frame 15 to improve the heat insulation performance of the heat exchanger 1 and reduce heat loss.

[0033] Reference Figure 5In an embodiment of this utility model, the fresh air connection assembly 2 includes a fan 21, an air inlet pipe 22, a reducer pipe 23, and a reducer pipe 24. The air inlet of the fan 21 is connected to the reducer pipe 23, and the air outlet of the fan 21 is connected to the reducer pipe 24. The reducer pipe 23 is connected to the fresh air inlet 11, and the reducer pipe 24 is connected to the air inlet pipe 22. The air inlet pipe 22 is used to connect to the oven. The fan 21 serves as the power source for the fresh air, drawing in fresh air and delivering it to the fresh air inlet 11 of the heat exchanger 1 through the fresh air connection assembly 2. However, the air outlet of the fan 21 does not match the connection between the heat exchanger 1 and the air inlet pipe 22. The reducer pipes 23 and 24 serve as a transition and adaptation mechanism, ensuring that the fresh air does not encounter excessive resistance and maintains good sealing when flowing through them. A filter is installed inside the air inlet duct 22 to remove dust, particles, and other impurities from the fresh air, ensuring that the fresh air delivered to the drying oven is clean. The fresh air connection component 2 of this utility model can efficiently and reliably introduce fresh air into the heat exchanger 1, while the use of a filter also ensures the cleanliness of the fresh air, helping to protect the cleanliness of the drying equipment and products.

[0034] Reference Figure 6 In an embodiment of this utility model, the exhaust transfer assembly 3 includes a second fan 31, an exhaust hose 32, a transfer pipe 33, and a reducing pipe 34. The second fan 31 serves as the power source for the hot exhaust, responsible for drawing the hot exhaust from the drying equipment and transporting it to the heat exchanger 1 through the exhaust transfer assembly 3 for heat exchange. The air inlet of the second fan 31 is connected to the exhaust hose 32, which has a certain degree of flexibility and sealing, enabling it to adapt to different installation environments and space constraints while ensuring that the hot exhaust does not leak. The adapter pipe 33 is connected to the air outlet of the second fan 31. The adapter pipe 33 is connected to the exhaust inlet 13 of the heat exchanger 1 through the variable diameter pipe 34. The adapter pipe 33 may have a specific shape and angle to adapt to the spatial relationship and installation requirements between the second fan 31 and the heat exchanger 1. The diameter of the adapter pipe 33 does not match the diameter of the exhaust inlet 13 of the heat exchanger 1. The variable diameter pipe 34 can play a transition and adaptation role to ensure that the hot exhaust air will not be subjected to excessive resistance when flowing through it, while maintaining good sealing performance.

[0035] Specifically, the bottom of the first fan 21 and the second fan 31 is provided with shock-absorbing rubber pads 5. The shock-absorbing rubber pads 5 are usually made of highly elastic rubber or other synthetic materials, and have good shock absorption, sound insulation and wear resistance properties. They can be used to reduce the vibration and noise generated during the operation of the fan and protect the fan and its installation environment from damage.

[0036] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An integrated waste heat recovery device, characterized in that: The device includes a heat exchanger, a fresh air connection assembly, an exhaust air transfer assembly, and an exhaust air bend. The heat exchanger is configured with a cross-ventilation structure and has a fresh air inlet, a fresh air outlet, an exhaust air inlet, and an exhaust air outlet. The fresh air connection assembly is connected to the fresh air inlet, the exhaust air transfer assembly is connected to the exhaust air inlet, and the exhaust air bend is connected to the exhaust air outlet. The fresh air outlet and the exhaust air transfer assembly of the heat exchanger are used to connect to drying equipment, and the fresh air connection assembly and the exhaust air bend are used to connect to an oven.

2. The integrated waste heat recovery device according to claim 1, characterized in that: The heat exchanger includes a frame, a heat exchange core, and a guide plate. The heat exchange core and the guide plate are both installed in the frame. The heat exchange core is sealed and installed at the lower end of the frame. The guide plate is located at the upper end of the frame and is used to guide the fresh air blown out by the heat exchange core to the fresh air outlet.

3. The integrated waste heat recovery device according to claim 2, characterized in that: The fresh air inlet is located at the lower end of the frame, the fresh air outlet and the exhaust air inlet are located on one side of the frame, the fresh air outlet is located above the exhaust air inlet, the exhaust air outlet is located on the other side of the frame, and the exhaust air inlet and the exhaust air outlet are connected to each other, as are the fresh air inlet and the fresh air outlet.

4. The integrated waste heat recovery device according to claim 2, characterized in that: The guide plate is arc-shaped, with its upper end connected to the top of the frame and its lower end connected to the end of the heat exchange core away from the fresh air outlet.

5. An integrated waste heat recovery device according to claim 2, characterized in that: The heat exchange core is provided with several transverse air ducts and longitudinal air ducts, and the transverse air ducts and longitudinal air ducts are arranged alternately.

6. The integrated waste heat recovery device according to claim 2, characterized in that: Both sides of the heat exchange core are provided with insulation plates, and the insulation plates are sealed to the frame.

7. The integrated waste heat recovery device according to claim 1, characterized in that: The fresh air connection assembly includes a fan, an air inlet pipe, a variable diameter pipe, and a variable diameter pipe. The air inlet of the fan is connected to the variable diameter pipe, the air outlet of the fan is connected to the variable diameter pipe, the variable diameter pipe is connected to the fresh air inlet, and the variable diameter pipe is connected to the air inlet pipe. The air inlet pipe is used to connect to the oven.

8. The integrated waste heat recovery device according to claim 7, characterized in that: A filter is installed inside the air inlet duct.

9. An integrated waste heat recovery device according to claim 7, characterized in that: The exhaust transfer assembly includes a second fan, an exhaust hose, a transfer pipe, and a third reducer. The exhaust hose is connected to the air inlet of the second fan, the transfer pipe is connected to the air outlet of the second fan, and the transfer pipe is connected to the exhaust inlet of the heat exchanger through the third reducer.

10. An integrated waste heat recovery device according to claim 9, characterized in that: The bottom of both the first and second fans is equipped with shock-absorbing rubber pads.

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