High-temperature furnace heat recycling device
By guiding airflow in a high-temperature furnace and utilizing a water-cooled heat exchanger to recover heat from the flue gas, the problems of energy waste and uneven heating caused by high-temperature flue gas emissions are solved, achieving efficient heat circulation and temperature uniformity, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BEISE SEMICONDUCTOR MATERIALS CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-12
Smart Images
Figure CN224353604U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of high-temperature furnace technology, and more specifically, to a heat circulation device for a high-temperature furnace. Background Technology
[0002] High-temperature furnaces are commonly used in the ceramic material processing field. The high-temperature flue gas generated inside the furnace is usually directly discharged to the exhaust gas treatment equipment without the heat in the flue gas being recovered and utilized.
[0003] Because high-temperature flue gas carries a large amount of heat energy, direct emission will cause the heat to dissipate into the atmosphere through pipes, resulting in serious energy waste; and in order to maintain the temperature inside the furnace, the equipment needs to continuously consume a large amount of electricity or fuel for heating, resulting in high energy consumption and increased production costs, which does not meet the environmental protection requirements of energy conservation and emission reduction.
[0004] In addition, traditional equipment lacks an effective heat circulation structure, and the uneven airflow distribution inside the furnace may lead to unstable heating temperature and affect product quality.
[0005] Therefore, this application proposes a high-temperature furnace heat circulation device to solve the problems of large heat loss, high energy consumption and low heating efficiency. Utility Model Content
[0006] To address the aforementioned problems, this application provides a high-temperature furnace heat circulation device.
[0007] The high-temperature furnace heat circulation device provided in this application adopts the following technical solution:
[0008] A high-temperature furnace heat circulation device includes a furnace body and a fan assembly.
[0009] The furnace body has a left air guide plate and a right air guide plate symmetrically arranged on its inner wall. The left air guide plate and the right air guide plate form a left air chamber and a right air chamber with the furnace body, respectively. The left air chamber, the furnace body and the right air chamber are connected in sequence. The air outlet of the fan assembly is connected to the left air chamber.
[0010] The top of the furnace body is provided with a first heat exchanger that communicates with the right air chamber, and the outside of the furnace body is provided with a second heat exchanger. Both the first heat exchanger and the second heat exchanger are water-cooled heat exchangers and the water-cooling pipes are interconnected. The inlet of the second heat exchanger is connected to a blower.
[0011] Furthermore, the outlet connection point of the second heat exchanger is located at the lower middle position of the furnace body and between the left air guide plate and the right air guide plate.
[0012] The above technical solution allows the heated air to be evenly delivered from the center of the bottom of the furnace, creating an upward airflow distribution. This layout avoids uneven heating caused by airflow concentrating on one side of the furnace. Simultaneously, the bottom-delivered airflow can convection with the high-temperature flue gas discharged from the top of the furnace, enhancing the circulation of heat within the furnace, further improving heat recovery efficiency, ensuring uniformity of the temperature field within the furnace, and reducing energy waste.
[0013] Furthermore, the air duct of the first heat exchanger is vertically connected to the top of the furnace body.
[0014] The above technical solution utilizes the natural convection principle of rising hot air to allow high-temperature flue gas in the furnace to smoothly enter the first heat exchanger without additional power, thus reducing fan energy consumption. The vertical air duct design reduces resistance loss caused by airflow bends, improves flue gas flow efficiency, and maximizes the contact area between the water-cooled pipes and the flue gas, ensuring that the heat in the high-temperature flue gas is fully absorbed and enhancing the heat exchange effect.
[0015] Furthermore, the outer surface of the furnace body is provided with a bracket for fixing multiple water-cooling pipes, the bracket being sleeved on the water-cooling pipes; adjacent water-cooling pipes are spaced apart.
[0016] The above technical solutions can avoid displacement or deformation of water-cooled pipes due to thermal expansion and contraction, ensuring the stability of the heat exchange system; the spaced water-cooled pipes can fully contact the outside air, improving heat dissipation efficiency, preventing the heat exchange performance from declining due to local overheating of the water-cooled pipes, and facilitating inspection and maintenance, thus extending the service life of the device.
[0017] In summary, this application includes at least one of the following beneficial technical effects:
[0018] (1) Through the coordinated design of the left and right air chambers and the heat exchanger, the heat of the flue gas emitted by the high-temperature furnace is recovered through water cooling circulation and then sent back to the furnace by the blower for reuse, which greatly reduces the consumption of external energy during the heating process and reduces the amount of electricity or fuel used, which meets the needs of green and energy-saving industrial production.
[0019] (2) Improved heating efficiency and stability: The airflow guidance of the air guide plate, the bottom air supply layout and the vertical air duct design make the airflow distribution in the furnace uniform and the temperature field more stable, avoiding the problems of local overheating or uneven heating. This not only improves the working efficiency of the high-temperature furnace, but also improves the quality consistency of the heated materials and reduces production defects caused by temperature fluctuations. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this application;
[0021] Figure 2 This is a three-dimensional structural diagram of the present application;
[0022] Figure 3 This is a schematic diagram of the internal structure of the furnace body;
[0023] Figure 4 This is a schematic diagram of the airflow direction inside the furnace body.
[0024] The following are the labels in the diagram: 1. Furnace body; 2. Blower assembly; 3. Left air guide plate; 4. Right air guide plate; 5. Left air chamber; 6. Right air chamber; 7. First heat exchanger; 8. Second heat exchanger; 9. Water-cooled pipe; 10. Blower; 11. Support frame. Detailed Implementation
[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0026] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] Example:
[0029] The following is in conjunction with the appendix Figure 1 -4 provides further detailed description of this application.
[0030] This application discloses a high-temperature furnace heat circulation device, including a furnace body 1 and a fan assembly 2.
[0031] The inner wall of the furnace body 1 is symmetrically provided with a left air guide plate 3 and a right air guide plate 4. The left air guide plate 3 and the right air guide plate 4 form a left air chamber 5 and a right air chamber 6 with the furnace body 1, respectively. The left air chamber 5, the furnace body 1 and the right air chamber 6 are connected in sequence. The air outlet of the blower assembly 2 is connected to the left air chamber 5.
[0032] The top of the furnace body 1 is provided with a first heat exchanger 7 that communicates with the right air chamber 6, and the outside of the furnace body 1 is provided with a second heat exchanger 8. Both the first heat exchanger 7 and the second heat exchanger 8 are water-cooled heat exchangers and the water-cooled pipes 9 are interconnected. The inlet of the second heat exchanger 8 is connected to a blower 10.
[0033] See Figure 1 , Figure 2 and Figure 4 The outlet connection point of the second heat exchanger 8 is located at the lower center of the furnace body 1, between the left guide plate 3 and the right guide plate 4. This allows the heated air after heat exchange to be evenly delivered from the center of the bottom of the furnace body 1, forming an upward airflow distribution. This layout avoids the problem of uneven heating caused by airflow concentrating on one side of the furnace body 1. At the same time, the bottom air supply can form convection with the high-temperature flue gas discharged from the upper part of the furnace body 1, enhancing the circulation of heat inside the furnace, further improving heat recovery efficiency, ensuring the uniformity of the temperature field inside the furnace, and reducing energy waste.
[0034] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The air duct of the first heat exchanger 7 is vertically connected to the top of the furnace body 1. Utilizing the natural convection principle of rising hot air, the high-temperature flue gas in the furnace can smoothly enter the first heat exchanger 7 without additional power, reducing the energy consumption of the fan. The vertical air duct design reduces the resistance loss caused by the airflow turning, improves the flue gas flow efficiency, and maximizes the contact area between the water-cooled pipe 9 and the flue gas, ensuring that the heat in the high-temperature flue gas is fully absorbed and enhancing the heat exchange effect.
[0035] See Figure 1 , Figure 2 and Figure 4 The outer surface of the furnace body 1 is provided with a bracket 11 for fixing multiple water-cooled pipes 9. The bracket 11 is sleeved on the water-cooled pipes 9. Adjacent water-cooled pipes 9 are spaced apart. This can prevent displacement or deformation of the water-cooled pipes 9 due to thermal expansion and contraction, and ensure the stability of the heat exchange system. The spaced water-cooled pipes 9 can fully contact the outside air, improve heat dissipation efficiency, prevent the heat exchange performance from decreasing due to local overheating of the water-cooled pipes 9, and facilitate inspection and maintenance, thus extending the service life of the device.
[0036] The implementation principle of a high-temperature furnace heat circulation device in this application embodiment is as follows: When the high-temperature furnace is working, the high-temperature flue gas generated in the furnace is guided by the left guide plate 3 and the right guide plate 4, and flows sequentially through the left air chamber 5, the interior of the furnace body 1, and the right air chamber 6 to the first heat exchanger 7 at the top.
[0037] The water-cooled pipes 9 inside the first heat exchanger 7 absorb heat from the flue gas, lowering its temperature, and the cooled flue gas is then discharged for treatment. Simultaneously, the water in the water-cooled pipes 9 absorbs heat and rises in temperature, transferring the heat to the external second heat exchanger 8. The second heat exchanger 8 draws in outside air through the blower 10, where the air exchanges heat with the heated water-cooled pipes 9. After the air temperature rises, it is sent back into the furnace from the lower center of the furnace body 1, forming a heat cycle process of "flue gas heat release → water cooling heat absorption → air heat exchange → hot air return to the furnace".
[0038] This process utilizes water-cooled pipe 9 to connect two heat exchangers, achieving efficient heat transfer and recovery, enabling the reuse of heat in the furnace, reducing energy consumption, and preventing damage or burns to equipment and workers on site from high-temperature flue gas.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A high-temperature furnace heat circulation device, comprising a furnace body (1) and a fan assembly (2), characterized in that: The inner wall of the furnace body (1) is symmetrically provided with a left air guide plate (3) and a right air guide plate (4). The left air guide plate (3) and the right air guide plate (4) form a left air chamber (5) and a right air chamber (6) with the furnace body (1), respectively. The left air chamber (5), the furnace body (1) and the right air chamber (6) are connected in sequence. The air outlet of the fan assembly (2) is connected to the left air chamber (5). The top of the furnace body (1) is provided with a first heat exchanger (7) that communicates with the right air chamber (6), and the outside of the furnace body (1) is provided with a second heat exchanger (8). The first heat exchanger (7) and the second heat exchanger (8) are both water-cooled heat exchangers and the water-cooled pipes (9) are interconnected. The inlet of the second heat exchanger (8) is connected to a blower (10).
2. The high-temperature furnace heat circulation device according to claim 1, characterized in that: The outlet connection point of the second heat exchanger (8) is located at the lower middle position of the furnace body (1) and between the left air guide plate (3) and the right air guide plate (4).
3. The high-temperature furnace heat circulation device according to claim 1, characterized in that: The air duct of the first heat exchanger (7) is vertically connected to the top of the furnace body (1).
4. The high-temperature furnace heat circulation device according to claim 1, characterized in that: The outer surface of the furnace body (1) is provided with a bracket (11) for fixing multiple water-cooling pipes (9), and the bracket (11) is sleeved on the water-cooling pipes (9); the adjacent water-cooling pipes (9) are spaced apart.