A heat cycle drying room
By designing a heat circulation drying chamber, and utilizing drying components to isolate and dehumidify components to absorb moisture, the problem of heat energy waste caused by the exhaust of high-temperature and high-humidity air is solved, realizing the recycling of hot air and continuous dehumidification, thus improving drying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN XINCHUAN YOUCHUANG ENERGY SAVING TECH CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-07
AI Technical Summary
Existing drying equipment wastes heat energy when discharging high-temperature and high-humidity air, requiring the heating device to continuously replenish cold air and reheat, thus reducing the material drying efficiency.
Design a heat circulation drying chamber, comprising a drying component, a circulation component, a dehumidification component, and a drying component. The drying component in the circulation component isolates moisture, and the dehumidification component adsorbs moisture, thereby realizing the circulation and continuous dehumidification of hot air.
It effectively reduces heat energy waste and improves material drying efficiency by recycling hot air and continuously dehumidifying.
Smart Images

Figure CN224470634U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drying room technology, and specifically relates to a heat circulation drying room. Background Technology
[0002] A drying room is a type of drying equipment, referring to a combination of mechanical devices that use specific technologies to dry the surface of objects of moisture or other liquids. Popular drying technologies mainly include ultraviolet drying, infrared drying, electromagnetic drying, and hot air drying. Each has its own characteristics and is widely used in the drying of various mechanical equipment and foods.
[0003] In existing technologies, high-temperature hot air is generally generated by a heating device and transported to the drying chamber by a fan to dry the material. As the material's moisture evaporates, the humidity content of the hot air continues to rise, forming high-temperature and high-humidity air. The high-temperature and high-humidity air is then discharged from the drying chamber by an exhaust fan, thereby dehumidifying the drying chamber. However, since the high-temperature and high-humidity air contains a large amount of heat, the exhaust fan wastes heat energy, requiring the heating device to continuously replenish cold air and reheat, thus reducing the drying efficiency of the material. Utility Model Content
[0004] In view of the problem that when the exhaust fan discharges high-temperature and high-humidity air, the high-temperature and high-humidity air contains a lot of heat, so the exhaust fan discharges high-temperature and high-humidity air and causes heat waves, so the heating device needs to continuously replenish cold air and reheat, resulting in a decrease in the drying efficiency of materials, this utility model proposes a heat circulation drying room to overcome the above-mentioned technical problems existing in the existing related technologies.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a heat circulation drying room, comprising a drying room:
[0007] The drying room is equipped with drying components, circulation components, dehumidification components, and drying components.
[0008] The drying component is fixedly installed at its top end and at one end of the circulation component. The interiors of both the drying component and the circulation component are connected to the interior of the drying chamber, so that the drying component can circulate the hot air in the drying chamber when it works in conjunction with the circulation component.
[0009] A dehumidification component is fixedly installed on one side of the circulation component to dehumidify the hot air flowing inside the circulation component.
[0010] The drying component is fitted at its bottom to the top of the dehumidifying component so that the drying component dries the dehumidifying component after dehumidification.
[0011] Furthermore, the drying assembly includes a gas burner and a fan, with one side of the gas burner fixedly installed to one side of the drying chamber, and the outer surface of the fan fixedly installed to the inner wall of the drying chamber.
[0012] Furthermore, the circulation assembly includes a first return air duct, one end of which is fixedly installed to the top of the gas burner, and a transfer box is fixedly installed to the other end of the first return air duct. A second return air duct is fixedly installed on one side of the transfer box, and one end of the second return air duct is fixedly installed to the top of the drying room.
[0013] Furthermore, the dehumidification assembly includes a drive motor, one side of which is fixedly mounted to the top of the transfer box, and a transmission rod is fixedly mounted to the output end of the drive motor.
[0014] Furthermore, the dehumidification assembly also includes a placement tray, the inner wall of which is fixedly installed to one end of the transmission rod, a water-absorbing silicone plate fixedly installed on the top of the placement tray, and the outer surface of the placement tray being fitted against the inner wall of the transfer box.
[0015] Furthermore, the drying assembly includes a first insulating plate and a hot air blower. The top of the first insulating plate is fixedly installed to the inner wall of the transfer box, the bottom of the first insulating plate is attached to one side of the absorbent silicone plate, and one side of the hot air blower is fixedly installed to one side of the transfer box.
[0016] Furthermore, the drying assembly also includes a second partition plate, the top of which is attached to the bottom of the placement tray, and an exhaust pipe is fixedly installed at the bottom of the second partition plate. The outer surface of the exhaust pipe is fixedly installed to the inner wall of the transfer box, and one side of the second partition plate is fixedly installed to the inner wall of the transfer box.
[0017] This utility model has the following beneficial effects:
[0018] 1. This utility model uses a drying component to blow hot air into a circulation component. Because the drying component installed on the inner wall of the circulation component isolates the hot air flowing inside the circulation component, the hot air in the circulation component flows through the dehumidification component and dries the moisture it adsorbs. Then, the drying component discharges the hot air containing moisture out of the circulation component. By activating and rotating the dehumidification component, when the dehumidification component is outside the coverage area of the hot air, the dehumidification component dehumidifies the dried hot air. When the dehumidification component moves into the coverage area of the hot air, the moisture adsorbed by the dehumidification component is dried, thus continuously dehumidifying the dried hot air.
[0019] 2. This utility model uses a drive motor to rotate a transmission rod mounted on the output end. When the transmission rod rotates, it causes a placement tray mounted on one end to rotate. When the placement tray rotates, it causes a water-absorbing silica gel plate mounted on its inner wall to rotate. A fan blows the dried hot air into a second return air duct. The dried hot air then enters a transfer box mounted on one end through the second return air duct. The water-absorbing silica gel plate mounted on the inner wall of the placement tray absorbs the moisture in the dried hot air, thus dehumidifying it. A hot air blower blows hot air into the transfer box. Because the inner wall of the transfer box is equipped with a first and a second insulating plate, and the first insulating plate... The bottom of the first insulating plate is sealed to the top of the absorbent silica gel plate, while the top of the second insulating plate is sealed to the bottom of the placement tray. This creates a barrier between the first and second insulating plates, preventing hot air from mixing with the hot air flowing inside the transfer box. The hot air dries the moisture absorbed by the absorbent silica gel plate as it flows through the plate. The hot air carrying the moisture is then discharged through the exhaust pipe. When the absorbent silica gel plate rotates with the placement tray, it moves outside the hot air coverage area, allowing it to absorb moisture from the hot air for dehumidification. When the absorbent silica gel plate moves into the hot air coverage area, the hot air dries the moisture absorbed by the plate, thus continuously dehumidifying the hot air.
[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0023] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.
[0024] Figure 3 This is a schematic diagram of the structure of this utility model from a left-side view.
[0025] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the local structure at point A;
[0026] Figure 5 This is a top-view structural schematic diagram of the present invention;
[0027] Figure 6For the present utility model Figure 5 An enlarged schematic diagram of the local structure at point B.
[0028] The attached diagram lists the components represented by each number as follows:
[0029] 1. Drying room; 2. Drying components; 201. Gas burner; 202. Fan; 3. Circulation components; 301. First return air duct; 302. Transfer box; 303. Second return air duct; 4. Dehumidification components; 401. Drive motor; 402. Transmission rod; 403. Placement tray; 404. Water-absorbing silica gel plate; 5. Drying components; 501. First insulation plate; 502. Hot air blower; 503. Second insulation plate; 504. Exhaust duct. Detailed Implementation
[0030] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.
[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0032] Please see Figures 1-6 As shown, this utility model is a heat circulation drying room, including a drying room 1:
[0033] The top of the drying component 2 is fixedly installed with one end of the circulation component 3, and the interiors of both the drying component 2 and the circulation component 3 are connected to the interior of the drying chamber 1, so that the drying component 2 can circulate the hot air in the drying chamber 1 when it is in operation with the circulation component 3.
[0034] The dehumidification component 4 is fixedly installed on one side of the circulation component 3 so that the dehumidification component 4 dehumidifies the hot air flowing inside the circulation component 3.
[0035] The drying component 5 is fitted at its bottom end to the top end of the dehumidifying component 4 so that the drying component 5 dries the dehumidifying component 4 after dehumidification.
[0036] In operation, the drying component 2 blows air from inside the drying chamber 1 into the circulation component 3, which is connected to it. The circulation component 3 then discharges air into the drying component 2, which is connected at one end. During operation, the drying component 2 mixes and burns fuel gas with air to generate hot air, which is then blown into the drying chamber 1 to dry the materials. Because the drying component 2 has multiple sets of symmetrically arranged air-blowing structures on the inner wall of the drying chamber 1, it can increase the coverage of hot air during operation. The hot air from the drying chamber 1 is blown into the circulation component 3 by the drying component 2, where the dehumidifying components 4 attached to the inner wall of the circulation component 3 absorb the moisture from the hot air. The air is then circulated... The ring assembly 3 discharges the dehumidified hot air into the drying assembly 2, thereby circulating the heat in the drying chamber 1. The drying assembly 5 blows hot air into the circulation assembly 3. Since the drying assembly 5 installed on the inner wall of the circulation assembly 3 isolates the hot air flowing in the circulation assembly 3, the hot air in the circulation assembly 3 flows through the dehumidification assembly 4 and dries the moisture it adsorbs. Then, the drying assembly 5 discharges the hot air containing moisture out of the circulation assembly 3. By starting the dehumidification assembly 4 and making it rotate, when the dehumidification assembly 4 is outside the coverage area of the hot air, the dehumidification assembly 4 dehumidifies the dried hot air. When the dehumidification assembly 4 moves into the coverage area of the hot air, the moisture adsorbed by the dehumidification assembly 4 is dried, thereby continuously dehumidifying the dried hot air.
[0037] This invention uses a drying component 2 to blow hot air from the drying chamber 1 into a circulation component 3. The dehumidifying component 4, which adheres to the inner wall of the circulation component 3, absorbs moisture from the hot air. The circulation component 3 then discharges the dehumidified hot air back into the drying component 2, thus circulating the heat in the drying chamber 1. A drying component 5 blows hot air into the circulation component 3. Because the drying component 5, installed on the inner wall of the circulation component 3, isolates the hot air flowing within the circulation component 3, the hot air flows through the dehumidifying component 4 and dries the absorbed moisture. The drying component 5 then discharges the moisture-containing hot air out of the circulation component 3. By activating and rotating the dehumidifying component 4, when it is outside the hot air coverage area, it dehumidifies the dried hot air; when it enters the hot air coverage area, the absorbed moisture is dried, thus continuously dehumidifying the dried hot air.
[0038] In one embodiment, the drying assembly 2 includes a gas burner 201 and a fan 202. One side of the gas burner 201 is fixedly installed with one side of the drying chamber 1, and the outer surface of the fan 202 is fixedly installed with the inner wall of the drying chamber 1.
[0039] By connecting the air inlet on one side of the gas burner 201 to an external gas pipeline, the gas can enter the interior of the gas burner 201 along with the glue pipeline. Since there are multiple sets of fans 202, which are symmetrically distributed on the inner wall of the drying room 1, the blowing range of the fans 202 can be increased when the fans 202 are started.
[0040] In one embodiment, the circulation component 3 includes a first return air duct 301, one end of which is fixedly installed to the top of the gas burner 201, and a transfer box 302 is fixedly installed to the other end of the first return air duct 301. A second return air duct 303 is fixedly installed on one side of the transfer box 302, and one end of the second return air duct 303 is fixedly installed to the top of the drying room 1.
[0041] By starting the fan 202, air is blown into the drying chamber 1, thereby increasing the air pressure inside the drying chamber 1. This allows the air inside the drying chamber 1 to enter the second return air duct 303, and then enter the transfer box 302 installed at one end through the second return air duct 303. The circulating air then enters the first return air duct 301 installed on one side of the transfer box 302, so that the air, together with one end of the first return air duct 301, enters the gas burner 201 connected inside. The gas burner 201 mixes with the air and burns to produce hot air. By starting the fan 202, the hot air is blown into the drying chamber 1 to dry the materials.
[0042] In one embodiment, the dehumidification component 4 includes a drive motor 401, one side of which is fixedly installed on the top of the transfer box 302, and a transmission rod 402 is fixedly installed on the output end of the drive motor 401.
[0043] The dehumidification assembly 4 also includes a placement tray 403. The inner wall of the placement tray 403 is fixedly installed with one end of the transmission rod 402. A water-absorbing silicone plate 404 is fixedly installed on the top of the placement tray 403. The outer surface of the placement tray 403 is fitted to the inner wall of the transfer box 302.
[0044] The drive motor 401 is started to drive the transmission rod 402 installed at the output end to rotate. When the transmission rod 402 rotates, it drives the placement tray 403 installed at one end to rotate. When the placement tray 403 rotates, it drives the water-absorbing silica gel plate 404 installed on the inner wall to rotate. The blower 202 blows the dried hot air into the second return air duct 303. Then, the dried hot air enters the transfer box 302 installed at one end through the second return air duct 303. The water-absorbing silica gel plate 404 installed on the inner wall of the placement tray 403 absorbs the moisture in the dried hot air, thereby dehumidifying the dried hot air.
[0045] In one embodiment, the drying assembly 5 includes a first insulating plate 501 and a hot air blower 502. The top end of the first insulating plate 501 is fixedly installed on the inner wall of the transfer box 302, and the bottom end of the first insulating plate 501 is attached to one side of the absorbent silicone plate 404. One side of the hot air blower 502 is fixedly installed on one side of the transfer box 302.
[0046] The drying assembly 5 also includes a second insulating plate 503. The top of the second insulating plate 503 is attached to the bottom of the placement tray 403. An exhaust pipe 504 is fixedly installed at the bottom of the second insulating plate 503. The outer surface of the exhaust pipe 504 is fixedly installed to the inner wall of the transfer box 302. One side of the second insulating plate 503 is fixedly installed to the inner wall of the transfer box 302.
[0047] Hot air is blown into the transfer box 302 by activating the hot air blower 502. Since the inner wall of the transfer box 302 is equipped with a first insulating plate 501 and a second insulating plate 503, and the bottom end of the first insulating plate 501 is sealed to the top end of the absorbent silicone plate 404, while the top end of the second insulating plate 503 is sealed to the bottom end of the placement tray 403, the first insulating plate 501 and the second insulating plate 503 form an isolation barrier, preventing the hot air from mixing with the hot air flowing inside the transfer box 302. The absorbent silica gel plate 404 dries the absorbed moisture, and then the hot air carrying the moisture is discharged through the exhaust pipe 504. When the absorbent silica gel plate 404 rotates with the rotation of the placement plate 403, it moves outside the hot air coverage area, thus allowing the absorbent silica gel plate 404 to absorb moisture in the hot air for dehumidification. When the absorbent silica gel plate 404 moves into the hot air coverage area, the hot air dries the absorbed moisture, thus continuously dehumidifying the hot air.
[0048] In summary, using the above-mentioned technical solution of this utility model, the hot air in the drying chamber 1 is blown into the circulation assembly 3 by the drying assembly 2, and the dehumidification assembly 4 attached to the inner wall of the circulation assembly 3 absorbs the moisture in the hot air. Then, the circulation assembly 3 discharges the dehumidified hot air into the drying assembly 2, thereby circulating the heat in the drying chamber 1. The hot air is blown into the circulation assembly 3 by the drying assembly 5. Since the drying assembly 5 installed on the inner wall of the circulation assembly 3 isolates the hot air flowing in the circulation assembly 3, the hot air in the circulation assembly 3 passes through the dehumidification assembly 4 to dry the moisture absorbed by it. Then, the drying assembly 5 discharges the hot air containing moisture from the circulation assembly. In addition to component 3, by activating and rotating the dehumidifying component 4, when the dehumidifying component 4 is outside the hot air coverage area, it dehumidifies the dried hot air. When the dehumidifying component 4 enters the hot air coverage area, the moisture adsorbed by the dehumidifying component 4 is dried, thus continuously dehumidifying the dried hot air. By activating the drive motor 401, the transmission rod 402 installed at the output end is rotated. When the transmission rod 402 rotates, it drives the placement tray 403 installed at one end to rotate. When the placement tray 403 rotates, it drives the water-absorbing silica gel plate 404 installed on the inner wall to rotate. The fan 202 then dries the hot air. Hot air is blown into the second return air duct 303, and then the dried hot air enters the transfer box 302 installed at one end through the second return air duct 303. The water-absorbing silica gel plate 404 installed on the inner wall of the placement tray 403 absorbs the moisture in the dried hot air, thereby dehumidifying the dried hot air. The hot air is blown into the transfer box 302 by starting the hot air fan 502. Since the inner wall of the transfer box 302 is equipped with a first isolation plate 501 and a second isolation plate 503, and the bottom end of the first isolation plate 501 is sealed to the top end of the water-absorbing silica gel plate 404, while the top end of the second isolation plate 503 is sealed to the bottom end of the placement tray 403, the first isolation plate 501 effectively prevents the air from drying out. Plate 501 and the second isolation plate 503 form an isolation barrier to prevent hot air from mixing with the hot air flowing inside the transfer box 302. The hot air flows over the water-absorbing silica gel plate 404 to dry the moisture it absorbs. Then, the hot air carrying moisture is discharged through the exhaust pipe 504. When the water-absorbing silica gel plate 404 rotates with the rotation of the placement tray 403, it moves outside the hot air coverage area, thus allowing the water-absorbing silica gel plate 404 to absorb moisture from the hot air for dehumidification. When the water-absorbing silica gel plate 404 moves into the hot air coverage area, the hot air dries the moisture it absorbs, thus continuously dehumidifying the hot air.
[0049] Through the above technical solution, 1. Hot air is blown into the circulation component 3 by the drying component 5. Since the drying component 5 installed on the inner wall of the circulation component 3 isolates the air flowing in the circulation component 3, the hot air in the circulation component 3 dries the dehumidification component 4 and then is discharged out of the circulation component 3 through the drying component 5. By starting the dehumidification component 4 and making it rotate, when the dehumidification component 4 is outside the coverage range of the hot air, the dehumidification component 4 dehumidifies the dried hot air. When the dehumidification component 4 moves into the coverage range of the hot air, the moisture adsorbed by the dehumidification component 4 is dried, thereby continuously dehumidifying the dried hot air.
[0050] 2. The drive motor 401 is started to drive the transmission rod 402 installed at the output end to rotate. When the transmission rod 402 rotates, it drives the placement tray 403 installed at one end to rotate. When the placement tray 403 rotates, it drives the water-absorbing silica gel plate 404 installed on the inner wall to rotate. The blower 202 blows the dried hot air into the second return air duct 303. Then, the dried hot air enters the transfer box 302 installed at one end through the second return air duct 303. The water-absorbing silica gel plate 404 installed on the inner wall of the placement tray 403 absorbs the moisture in the dried hot air, thereby dehumidifying the dried hot air. The hot air blower 502 is started to blow hot air into the transfer box 302. Since the inner wall of the transfer box 302 is equipped with a first isolation plate 501 and a second isolation plate 503, and the first isolation plate... The bottom of the first insulating plate 501 is sealed to the top of the absorbent silica gel plate 404, while the top of the second insulating plate 503 is sealed to the bottom of the placement tray 403, so that the first insulating plate 501 and the second insulating plate 503 form an isolation barrier to prevent hot air from mixing with the hot air flowing inside the transfer box 302. The hot air dries the moisture absorbed by the absorbent silica gel plate 404 as it flows through the hot air. Then, the hot air carrying moisture is discharged through the exhaust pipe 504. When the absorbent silica gel plate 404 rotates with the rotation of the placement tray 403, it moves outside the hot air coverage area, thus allowing the absorbent silica gel plate 404 to absorb moisture from the hot air for dehumidification. When the absorbent silica gel plate 404 moves into the hot air coverage area, the hot air dries the moisture absorbed by the absorbent silica gel plate 404, thus continuously dehumidifying the hot air.
[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0052] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A heat circulation drying room, comprising a drying room (1), characterized in that: The drying room (1) is equipped with a drying component (2), a circulation component (3), a dehumidification component (4), and a drying component (5); The top of the drying component (2) is fixedly installed at one end of the circulation component (3), and the interiors of both the drying component (2) and the circulation component (3) are connected to the interior of the drying chamber (1) so that the drying component (2) can circulate the hot air in the drying chamber (1) when it is in operation with the circulation component (3). A dehumidification component (4) is fixedly installed on one side of the circulation component (3) so that the dehumidification component (4) dehumidifies the hot air flowing inside the circulation component (3); The drying component (5) is attached to the top of the dehumidifying component (4) at its bottom end so that the drying component (5) dries the dehumidifying component (4) after dehumidification.
2. The heat circulation drying room according to claim 1, characterized in that, The drying assembly (2) includes a gas burner (201) and a fan (202). One side of the gas burner (201) is fixedly installed with one side of the drying chamber (1), and the outer surface of the fan (202) is fixedly installed with the inner wall of the drying chamber (1).
3. The heat circulation drying room according to claim 2, characterized in that, The circulation assembly (3) includes a first return air duct (301), one end of which is fixedly installed at the top of the gas burner (201), and a transfer box (302) is fixedly installed at the other end of the first return air duct (301). A second return air duct (303) is fixedly installed on one side of the transfer box (302), and one end of the second return air duct (303) is fixedly installed at the top of the drying room (1).
4. The heat circulation drying room according to claim 3, characterized in that, The dehumidification assembly (4) includes a drive motor (401), one side of which is fixedly installed on the top of the transfer box (302), and a transmission rod (402) is fixedly installed on the output end of the drive motor (401).
5. A heat circulation drying room according to claim 4, characterized in that, The dehumidification assembly (4) also includes a placement tray (403), the inner wall of the placement tray (403) is fixedly installed with one end of the transmission rod (402), a water-absorbing silicone plate (404) is fixedly installed on the top of the placement tray (403), and the outer surface of the placement tray (403) is fitted to the inner wall of the transfer box (302).
6. The heat circulation drying room according to claim 5, characterized in that, The drying assembly (5) includes a first insulating plate (501) and a hot air blower (502). The top of the first insulating plate (501) is fixedly installed on the inner wall of the transfer box (302), the bottom of the first insulating plate (501) is attached to one side of the absorbent silica gel plate (404), and one side of the hot air blower (502) is fixedly installed on one side of the transfer box (302).
7. A heat circulation drying room according to claim 5, characterized in that, The drying assembly (5) also includes a second insulating plate (503), the top of which is fitted to the bottom of the placement tray (403), and an exhaust pipe (504) is fixedly installed at the bottom of the second insulating plate (503). The outer surface of the exhaust pipe (504) is fixedly installed to the inner wall of the transfer box (302), and one side of the second insulating plate (503) is fixedly installed to the inner wall of the transfer box (302).