Efficient heat recovery drying room with built-in drying main machine

Abstract

The utility model discloses an efficient heat recovery drying room with a built-in drying host, which comprises a drying room and an integrated equipment case at one end of the drying room, a main air inlet is arranged on one side of the equipment case, an air outlet is arranged at the top of the equipment case, and an exhaust fan capable of forming an airflow circulation channel in the equipment case is mounted in the air outlet. The interior of the equipment case is divided into a first equipment cabin and a second equipment cabin through a vertical plate, and a heat recovery device, an outer evaporator, an electric air valve, an inner evaporator, a condenser and an electric auxiliary heating device are sequentially arranged and installed on an airflow circulation channel in the equipment case and used for heat recovery and dehumidification drying airflow. According to the drying room, the drying main machine and the drying room are integrally designed, the equipment structure is more compact, the occupied area is smaller, meanwhile, heat loss caused by external pipeline connection is reduced, the heat energy utilization efficiency is improved, energy consumption can be effectively reduced, and drying uniformity is ensured.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment, and in particular to a high-efficiency heat recovery drying chamber with a built-in drying host. Background Technology

[0002] Drying equipment, as one of the core pieces of equipment in modern industrial production, is widely used in various industries such as food, chemical, pharmaceutical, environmental protection, and metallurgy, undertaking the crucial task of removing moisture or other solvents from materials. Currently, most drying equipment adopts the principle of hot air circulation heating, that is, air is heated by a heating system and then introduced into the drying chamber, causing the moisture on the surface of the material to evaporate with the airflow and be discharged, thereby achieving the drying purpose. Existing equipment typically includes major components such as a heating system, an airflow circulation system, a drying chamber, and an exhaust system. The heating system generally uses electric heating or steam heating to provide the heat source, the airflow circulation system guides the hot air to circulate within the drying chamber, and the exhaust system is responsible for removing moisture. However, although existing equipment can meet the needs of industrial production to a certain extent, many technical bottlenecks still exist during long-term operation, mainly manifested in low energy efficiency, serious energy waste, and low heat recovery utilization rate.

[0003] Firstly, the high energy consumption of existing drying equipment stems primarily from the inefficient utilization of hot air. Traditional equipment typically uses a single heat source to heat the air, allowing it to carry away moisture through the material surface. However, due to the lack of an effective heat recovery mechanism, a large amount of heated air is directly discharged to the outside after the drying process, resulting in significant heat loss. Furthermore, even when some equipment is equipped with an airflow circulation system, the temperature of the hot air drops rapidly during circulation due to structural design limitations, leading to a decrease in subsequent drying efficiency. This necessitates the addition of fresh hot air for reheating, further increasing energy consumption. Especially during continuous production, the prolonged high-power operation of the equipment exacerbates energy waste, keeping production costs high.

[0004] Secondly, the main reason for the low heat recovery efficiency lies in the deficiencies in the separation and reuse technology of hot and humid airflow. Although some equipment has incorporated heat recovery systems, their complex designs make it difficult for many devices to achieve efficient separation of moist and hot air, resulting in low waste heat recovery rates. For example, some heat recovery devices rely on simple heat exchange structures, but due to limited heat exchange area, waste heat cannot be fully recovered, resulting in low-temperature recovered air that cannot effectively participate in secondary drying. Furthermore, the airflow regulation systems of some devices lack precision, making it difficult to accurately control the direction of humid airflow, thus failing to fully recover heat from the high-temperature airflow and reducing overall heat recovery efficiency. Simultaneously, to achieve heat recovery, many existing systems employ complex piping and heat exchange structures, increasing equipment maintenance difficulty and operating costs, further limiting their practical application value.

[0005] In the process of optimizing the energy efficiency of drying equipment, although existing technologies have attempted to introduce heat recovery systems, they often face practical challenges such as complex structures, high costs, and inconvenient maintenance. For example, some high-efficiency heat recovery solutions require the additional installation of large heat exchange devices, occupying a significant amount of space and substantially increasing the equipment's size and cost. Furthermore, existing intelligent airflow control technologies are still immature, making it difficult to achieve precise airflow control, resulting in some improved solutions failing to achieve the expected results in practical applications. Therefore, how to improve energy efficiency, reduce energy consumption, and enhance heat recovery utilization while maintaining equipment compactness and ease of maintenance has become a pressing issue that existing technologies need to address. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency heat recovery drying chamber with a built-in drying host that has an optimized airflow circulation path and a high-efficiency heat recovery device, which can effectively reduce energy consumption.

[0007] To achieve the above objectives, this utility model adopts the following solution: a high-efficiency heat recovery drying chamber with a built-in drying host, comprising:

[0008] The drying chamber has an equipment housing built into one end. The outer wall of the equipment housing facing the drying chamber has a main air inlet, and the top of the equipment housing has an air outlet. The inside of the equipment housing forms an air circulation channel for introducing airflow into the drying chamber from the main air inlet and then exporting the dried airflow into the drying chamber from the air outlet. The top of the drying chamber has a circulating fan that can guide the hot airflow blown out of the air outlet into the drying chamber.

[0009] An exhaust fan, installed inside the air outlet, is used to create negative pressure inside the equipment casing to drive airflow along the airflow circulation channel;

[0010] A vertical plate is installed inside the equipment chassis, dividing the interior of the equipment chassis into a first equipment compartment and a second equipment compartment;

[0011] A heat recovery device is installed in the second equipment compartment. Inside the device are horizontal and vertical air passages arranged in a cross shape. One end of the horizontal air passage is connected to the main air inlet, and the other end is connected to a one-way air valve installed on the vertical plate.

[0012] An external evaporator is installed in the first equipment compartment and is equipped with a compressor unit connected to it via a refrigerant circulation pipeline. It is used to remove moisture from the airflow discharged by the one-way valve.

[0013] An electric air valve is installed on the vertical plate below the one-way air valve and is used to guide the airflow after dehumidification by the external evaporator back to the area below the heat recovery device.

[0014] An internal evaporator is located in the second equipment compartment below the heat recovery device and is connected to the compressor unit through a refrigerant circulation pipeline. It is used to heat the airflow returning through the electric air valve and send the heated airflow into the vertical air passage of the heat recovery device.

[0015] A condenser, installed in the second equipment compartment above the heat recovery device, is used to condense the moisture in the upward airflow from the vertical air duct.

[0016] An electric auxiliary heating device, located between the condenser and the air outlet, is used to finally heat the airflow entering the drying chamber after passing through the condenser;

[0017] The return air component is closable and mounted on the outer wall of the second equipment compartment below the heat recovery device, and is used to supplement the airflow in the drying room into the vertical air duct.

[0018] The above solution integrates the equipment chassis at one end of the drying chamber, creating a compact, integrated structure that improves overall system stability and airflow efficiency. An independent airflow circulation channel is formed inside the chassis, using a blower to generate negative pressure and drive airflow, ensuring effective circulation of hot air and its participation in the drying process. Vertical panels divide the chassis into two compartments, allowing for the orderly arrangement of functional components such as the heat recovery device, evaporator, and condenser, thereby improving heat recovery and dehumidification efficiency. The heat recovery device employs a cross-shaped airflow structure, enabling efficient heat exchange between hot and cold air, improving energy utilization. Simultaneously, it works with external and internal evaporators to achieve circulating heating and moisture removal of the drying air. Finally, an electric auxiliary heating device further increases the outlet air temperature to ensure drying effectiveness. The return air component allows for reasonable replenishment of airflow within the drying chamber, preventing energy loss. Overall, this solution, through its rational structural design, fully utilizes the heat energy during the drying process, effectively reducing energy consumption and improving drying efficiency.

[0019] As a further embodiment of this invention, the horizontal air ducts are arranged in a zigzag pattern and run horizontally through the heat recovery device, which can extend the airflow path, making the heat exchange process more complete and improving the heat recovery efficiency. Furthermore, since the airflow needs to pass through multiple bends, it helps to slow down the flow velocity, allowing the heat in the air to be more fully transferred to the heat exchange structure, thereby further reducing heat loss and improving the overall energy efficiency of the system without increasing additional energy consumption.

[0020] In a preferred embodiment of this invention, the horizontal air duct is equipped with a continuously bent heat-conducting plate, which allows for more uniform heat distribution and increases the contact area between the air and the heat exchange material. The continuously bent structure of the heat-conducting plate effectively improves the heat exchange rate, enabling the air entering the drying chamber to reach the ideal temperature in a shorter time, thereby reducing energy consumption. Furthermore, the bent structure can increase airflow turbulence to a certain extent, reducing airflow short-circuiting and ensuring maximum thermal energy utilization.

[0021] As a further embodiment of this invention, the inner wall of the vertical air passage has a corrugated structure, which enhances the turbulence effect of the airflow and improves heat exchange efficiency. Compared to the straight flow of a smooth inner wall, the corrugated structure can generate more vortices in the airflow, thereby increasing the contact area between the air and the heat exchange surface, and making heat transfer more efficient. This can significantly improve the overall efficiency of the heat recovery device, reduce energy loss, and further reduce the operating cost of the drying equipment.

[0022] In a preferred embodiment of this invention, the condenser's condenser tubes are arranged in a multi-layered, staggered pattern and equipped with heat dissipation fins to improve the condensation effect. The multi-layered, staggered structure increases the heat exchange area of ​​the condenser tubes, allowing moisture to remain in the condenser for a longer time and improving the water vapor condensation effect. Simultaneously, the heat dissipation fins enhance air convection, increase the heat dissipation rate, and make the condensation process more efficient, thereby improving the overall dehumidification capacity and ensuring effective control of the air humidity within the drying room.

[0023] As a preferred embodiment of this utility model, the return air component includes:

[0024] A flap opening is located on the outer wall of the second equipment compartment below the main air inlet;

[0025] Multiple return air flaps are arranged sequentially from top to bottom within the flap openings;

[0026] Cross links are connected to the left and right sides of each return air flap to link the opening and closing of each return air flap. One end of the cross link is hinged to the side wall of the flap opening.

[0027] The driving component is installed on the inner wall of the second equipment compartment. The driving end is connected to the other end of the cross linkage, which drives the cross linkage to change angle, thereby linking the return air flap to open or close.

[0028] The preferred embodiment described above optimizes the return air components by incorporating multiple return air flaps and employing a cross-link mechanism for synchronized opening and closing. The flap opening design allows for reasonable airflow replenishment during the drying process, maintaining stable airflow circulation, while the cross-link mechanism ensures synchronized operation of all flaps, improving opening and closing stability and sealing. This optimization allows for more precise control of the return air volume, avoiding unnecessary heat loss, while ensuring balanced air pressure and temperature within the drying chamber, thus improving overall drying efficiency.

[0029] As a preferred embodiment of this utility model, to improve the control accuracy of the return air flap, the driving component includes a driving air rod installed on the inner wall of the second equipment compartment on one side of the flap opening. A slider is fixedly connected to the piston rod end of the driving air rod, and the end of the cross link away from the hinge point is rotatably inserted into the slider. Compared to traditional mechanical linkage methods, the air rod drive provides more flexible adjustment capabilities, making airflow replenishment more precise. Furthermore, the driving air rod configuration can reduce mechanical friction loss, increase the service life of the device, and reduce maintenance costs, making the equipment operate more efficiently and stably.

[0030] In a preferred embodiment of this invention, a vertical guide rail is vertically installed on the inner wall of the second equipment compartment. The slider moves up and down along the vertical guide rail, thereby ensuring the stability of the flap opening and closing. The vertical guide rail prevents the slider from wobbling during movement, improves the accuracy of the linkage mechanism, and reduces additional lateral stress, thus reducing equipment wear. This optimization method ensures the long-term stable operation of the airflow replenishment system and improves the reliability of the equipment.

[0031] As a preferred embodiment of this utility model, a cooling fan is provided on the front wall of the equipment chassis to dissipate heat from the external evaporator, thereby increasing the airflow speed, accelerating the heat dissipation efficiency of the external evaporator, reducing equipment failures caused by overheating, and ensuring the stable operation of the entire system.

[0032] As a preferred embodiment of this utility model, casters are provided at the four corners of the bottom of the equipment chassis to facilitate equipment movement.

[0033] In summary, the advantages of this utility model compared to existing technologies are as follows: By integrating the drying unit and drying chamber into a single design, the equipment structure is more compact, occupies less space, and reduces heat loss from external piping connections, thus improving thermal energy utilization efficiency. The equipment casing features an independent airflow circulation channel, ensuring more stable hot air flow and avoiding uneven drying problems caused by uneven airflow distribution in traditional external equipment. Furthermore, the interior is divided into compartments by vertical panels, allowing for the orderly arrangement of functional components and preventing interference between heat recovery devices, evaporators, condensers, and other components, thereby further improving system operating efficiency.

[0034] In terms of heat recovery, this solution employs a cross-shaped airflow structure to ensure thorough heat exchange between hot and cold air, recovering heat lost during the drying process and reusing it for air heating, achieving high efficiency and energy saving. Further optimization utilizes zigzag-arranged horizontal airflow channels to extend the airflow path, facilitating more complete heat exchange and improving heat recovery efficiency. Simultaneously, heat-conducting plates are added inside the airflow channels to increase the contact area between the airflow and the heat exchange surface, accelerating heat transfer and allowing the dried air to quickly reach the set temperature, reducing energy waste. Furthermore, the inner wall of the vertical airflow channels features a corrugated structure to increase airflow turbulence, further enhancing the heat exchange effect.

[0035] Furthermore, in terms of airflow control, this invention optimizes the return air structure by adopting a flap-type return air mechanism and achieving linkage control through cross linkages. This makes airflow replenishment more precise and avoids unnecessary heat loss. The opening and closing of the return air flap is controlled by a drive air rod and works in conjunction with a vertical guide rail, making airflow adjustment smoother, reducing mechanical friction loss, and improving equipment reliability. The optimized return air mechanism not only ensures uniform air circulation within the drying chamber but also effectively reduces energy consumption, enabling the drying chamber to achieve efficient drying while possessing superior energy-saving performance.

[0036] Overall, through a series of optimized designs, this drying chamber improves drying efficiency while achieving more efficient heat recovery, more precise air circulation control, more stable operating performance, and more convenient operation and maintenance. Compared to traditional drying equipment, this drying chamber not only effectively reduces energy consumption and ensures drying uniformity, but also has a longer service life, is suitable for various industrial drying processes, and has good market application value. Attached Figure Description

[0037] Figure 1 This is a three-dimensional view of the present invention.

[0038] Figure 2 This is an overall cross-sectional view of the present invention.

[0039] Figure 3 This is one of the cross-sectional views of the inside of the equipment chassis in this utility model, and a schematic diagram of the airflow path along the airflow circulation channel.

[0040] Figure 4 This is the second cross-sectional view of the interior of the equipment chassis in this utility model.

[0041] Figure 5 This is the third cross-sectional view of the interior of the equipment chassis in this utility model.

[0042] Figure 6 This is the fourth cross-sectional view of the interior of the equipment chassis in this utility model.

[0043] Figure 7 for Figure 6 A magnified view of point A in the middle.

[0044] Figure 8 This is the fifth cross-sectional view of the interior of the equipment chassis in this utility model, as well as an enlarged view of a local area in the figure.

[0045] Figure 9 This is a partially enlarged view of the return air flap in this utility model, which is opened by a drive air rod.

[0046] Figure 10 This is the sixth cross-sectional view of the interior of the equipment chassis in this utility model.

[0047] Explanation of reference numerals in the attached drawings: 1. Equipment chassis; 2. Exhaust fan; 3. Heat recovery device; 4. External evaporator; 5. Compressor unit; 6. One-way air valve; 7. Electric air valve; 8. Internal evaporator; 9. Condenser; 10. Electric auxiliary heating device; 11. Air outlet; 12. Main air inlet; 13. Vertical plate; 14. Return air component; 15. Drive component; 16. Casters; 18. Cooling fan; 31. Horizontal air duct; 32. Vertical air duct; 33. Heat-conducting plate; 131. First equipment compartment; 132. Second equipment compartment; 140. Flip-up opening; 141. Return air flap; 142. Cross linkage; 143. Vertical guide groove; 151. Drive air rod; 152. Slider; 153. Vertical guide rail; 200. Drying chamber; 201. Circulating fan. Detailed Implementation

[0048] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0049] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0050] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 10The diagram illustrates a high-efficiency heat recovery drying chamber with a built-in drying unit. It includes a drying chamber 200 with internal space for placing materials to be dried. One end of the drying chamber 200 has an opening, inside which an equipment housing 1 is installed. The equipment housing 1 has a main air inlet 12 on the side facing the drying chamber 200 and an air outlet 11 on its top. An exhaust fan 2 is installed inside the air outlet 11. When activated, airflow from the drying chamber 200 enters the equipment housing 1 through the main air inlet 12, passes through the airflow channel inside the equipment housing 1 for drying airflow, and exits through the air outlet 11. The top of the drying chamber 200 has a circulating fan 201 that guides the hot airflow from the air outlet 11 into the drying chamber 200. Specifically, a vertical plate 13 is vertically installed inside the equipment housing 1 to divide the space inside the equipment housing 1 into a first equipment compartment 131 and a second equipment compartment 132. A heat recovery device 3 is installed in the second equipment compartment 132, located on one side of the main air inlet 12. The heat recovery device 3 has multiple horizontally spaced air ducts 31, with their inlets connected to the main air inlet 12. Two one-way valves 6 are installed on the vertical plate 13 corresponding to the heat recovery device 3. The outlet of the horizontal air ducts 31 faces the inlet of the one-way valves 6. When the airflow enters the horizontal air ducts 31, it flows out through the one-way valves 6 and enters the first equipment compartment 131. An external evaporator 4 is installed in the first equipment compartment 131, opposite the one-way valves 6. Below the external evaporator 4 is a compressor unit 5 connected via a refrigerant circulation pipeline. To prevent the external evaporator 4 from overheating due to prolonged operation, a cooling fan 18 is installed at the front of the equipment casing 1, on the side facing outwards from the drying chamber 200, to dissipate heat from the external evaporator 4. The external evaporator 4 can perform preliminary dehumidification and drying of the moisture in the airflow discharged by the one-way valves 6. An electric air valve 7 is installed on the vertical plate 13 below the one-way air valve 6. After the airflow is initially dehumidified and dried, it is guided downward into the space where the compressor unit 5 is located, and then passes through the electric air valve 7 and is guided back to the second equipment compartment 132 below the heat recovery device 3. At this time, an internal evaporator 8 is installed in the second equipment compartment 132 behind the electric air valve 7. The internal evaporator 8 is also connected to the compressor unit 5 through the refrigerant circulation pipeline. The airflow from the electric air valve 7 is initially heated and dehumidified again after passing through the internal evaporator 8. Several vertical air passages 32 pass through the vertical pipe in the heat recovery device 3. The airflow heated by the internal evaporator 8 enters the air inlet at the bottom of the vertical air passage 32. After heat exchange with the airflow in the horizontal air passage 31 in the heat recovery device 3, the airflow flows upward from the top of the vertical air passage 32.A condenser 9 is installed above the outlet of the vertical air duct 32, and an electric auxiliary heating device 10 is installed above the condenser 9. The inlet of the air outlet 11 is located above the electric auxiliary heating device 10. The hot airflow flowing upward from the top of the vertical air duct 32 first passes through the condenser 9 to condense and remove residual moisture, and then passes through the electric auxiliary heating device 10 for final heating before entering the air outlet 11 and being guided back into the drying chamber 200. The entire flow path of the airflow shown in the above embodiment, from the main air inlet 12 to the air outlet 11 and then being discharged, is the airflow circulation for drying airflow formed inside the equipment casing 1 mentioned earlier. Moisture is introduced into the drying chamber 200 through the main air inlet 12, and a negative pressure is formed at the air outlet 11 by the exhaust fan 2, driving the continuous circulation of airflow to form an airflow channel inside the equipment casing 1. The airflow channel is equipped with a heat recovery device 3, an external evaporator 4, a compressor 5, an electric air valve 7, a one-way air valve 6, and an internal evaporator 8, forming an airflow circulation and heat exchange mechanism that effectively enhances the drying capacity of the circulating airflow. Finally, an electric auxiliary heating device 10 is used to regulate the temperature of the airflow entering the drying chamber 200. To precisely control the airflow circulation volume according to the airflow requirements inside the equipment casing 1, and to avoid excessive or insufficient airflow affecting the drying efficiency and heat exchange effect, an openable and closable return air component 14 is installed on the outer wall of the second equipment compartment 132 below the heat recovery device 3. This return air component 14 can flexibly replenish fresh airflow, ensuring the stability and balance of the circulation. Based on this, sensors can be installed along the airflow path using existing sensing technology. Through an industrial control host and program, the entire equipment can achieve more efficient heat recovery and airflow management, not only improving drying efficiency but also effectively reducing energy consumption, making it very suitable for high-efficiency and energy-saving drying operations.

[0051] Among them, such as Figures 3 to 6 As shown, to further improve heat exchange efficiency, the horizontal air ducts 31 are arranged horizontally in a zigzag pattern and run through the heat recovery device 3, with continuously bent heat-conducting plates 33 inside to improve heat exchange efficiency. The inner wall of the vertical air ducts 32 has a corrugated structure to increase airflow turbulence. The horizontal air ducts 31 and 32 run through the heat recovery device 3 independently, that is, the horizontal air ducts 31 and 32 are arranged in a cross shape and do not intersect. Heat exchange between the horizontal air ducts 31 and 32 is achieved through heat conduction. In addition, in this embodiment, the condenser tubes of the condenser 9 are arranged in a multi-layered staggered pattern and are equipped with heat dissipation fins to improve the condensation effect. The condenser 9 can be designed with reference to commonly used existing technologies.

[0052] In addition, such as Figures 6 to 10As shown, in order to enhance the airflow regulation capability of the equipment chassis 1 and make the airflow during the drying process more flexible and efficient, a flap opening 140 is provided on the outer wall of the second equipment compartment 132 below the main air inlet 12. The return air component 14 includes a plurality of return air flaps 141 arranged sequentially from top to bottom within the flap opening 140. A cross link 142 is connected to the side of the return air flap 141. The top end of the cross link 142 is hinged to the side wall of the flap opening 140. A drive component 15 is installed on the inner wall of the second equipment compartment 132. The drive component 15 is connected to the bottom end of the cross link 142, thereby causing the cross link 142 to change angle, and thus linking each return air flap 141 to flip up to open or flip down to close. To ensure that the return air flap 141 can flip up or down when the angle changes, the cross link 142 is provided with a vertical guide groove 143 on the side wall of the flap opening 140. Except for the uppermost connecting shaft of the cross link 142, which is hinged to the side wall of the flap opening 140, the connecting shafts of each of the other links connected to the return air flap 141 are inserted into the vertical guide groove 143 and move up and down along the vertical guide groove 143 to ensure that the return air flap 141 can completely cover the flap opening 140 when closed. It should be noted that the cross link 142 in this embodiment uses a scissor-type cross link as shown in the figure.

[0053] Among them, such as Figures 7 to 9 As shown, in a preferred embodiment of the driving component 15 of the present invention, it includes a driving air rod 151 installed on the inner wall of the second equipment compartment 132 on one side of the flap opening 140. A slider 152 is fixedly connected to the piston rod end of the driving air rod 151. The slider 152 can move up and down along a vertical guide rail 153 provided on the inner wall of the second equipment compartment 132. The end of the cross link 142 away from the hinge point is rotatably inserted into the slider 152. The vertical guide rail 153 prevents the slider 152 from wobbling during movement, improves the linkage accuracy of the cross link 142, and reduces additional lateral stress, thereby reducing wear on the cross link 142 and the driving air rod 151.

[0054] Finally, to improve the ease of maintenance and installation of the equipment chassis 1, casters 16 with brake locking function are provided at the four corners of the bottom of the equipment chassis 1, allowing the equipment chassis 1 to be moved easily for adjustment, maintenance, and cleaning. This provides greater flexibility and convenience for industrial production applications that require frequent changes in the installation environment, reduces the difficulty of moving the equipment chassis 1, and improves work efficiency.

[0055] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat recovery drying chamber with a built-in drying unit, characterized in that, include: A drying chamber (200) has an equipment housing (1) built into one end of the drying chamber (200). The outer wall of the equipment housing (1) facing the drying chamber (200) has a main air inlet (12). The top of the equipment housing (1) has an air outlet (11). The equipment housing (1) has an air circulation channel formed inside for introducing airflow into the drying chamber (200) from the main air inlet (12) and then exporting the dried airflow to the drying chamber (200) from the air outlet (11). The top of the drying chamber (200) has a circulating fan (201) that can guide the hot airflow blown out from the air outlet (11) into the drying chamber (200). An exhaust fan (2) is installed inside the air outlet (11) to create a negative pressure inside the equipment casing (1) to drive the airflow along the airflow circulation channel; A vertical plate (13) is vertically installed inside the equipment chassis (1) to divide the interior of the equipment chassis (1) into a first equipment compartment (131) and a second equipment compartment (132). The heat recovery device (3) is installed in the second equipment compartment (132). Inside it are horizontal air passages (31) and vertical air passages (32) arranged in a cross shape. One end of the horizontal air passage (31) is connected to the main air inlet (12), and the other end is connected to the one-way air valve (6) installed on the vertical plate (13). An external evaporator (4) is installed in the first equipment compartment (131) and is equipped with a compressor unit (5) connected by a refrigerant circulation pipeline below it to remove moisture from the airflow discharged by the one-way valve (6); An electric air valve (7) is installed on the vertical plate (13) below the one-way air valve (6) to guide the airflow after dehumidification by the external evaporator (4) back to the heat recovery device (3); An internal evaporator (8) is located in the second equipment compartment (132) below the heat recovery device (3) and is connected to the compressor unit (5) through a refrigerant circulation pipeline. It is used to heat the airflow returning through the electric air valve (7) and send the heated airflow into the vertical air passage (32) of the heat recovery device (3). The condenser (9) is installed in the second equipment compartment (132) above the heat recovery device (3) to condense the moisture in the upward airflow in the vertical air passage (32); An electric auxiliary heating device (10) is located between the condenser (9) and the air outlet (11) to provide final heating for the airflow entering the drying chamber (200) after passing through the condenser (9); The return air component (14) is closable and installed on the outer wall of the second equipment compartment (132) below the heat recovery device (3) to supplement the airflow in the drying room (200) into the vertical air duct (32).

2. The high-efficiency heat recovery drying chamber with a built-in drying host according to claim 1, characterized in that, The horizontal air passage (31) is arranged horizontally in a zigzag pattern and runs through the heat recovery device (3).

3. The high-efficiency heat recovery drying chamber with a built-in drying host according to claim 2, characterized in that, The horizontal air passage (31) is provided with a continuously bent heat-conducting plate (33) to improve heat exchange efficiency.

4. The high-efficiency heat recovery drying chamber with a built-in drying host according to claim 1, characterized in that, The inner wall of the vertical air passage (32) has a corrugated structure to increase the turbulence effect of the airflow.

5. A high-efficiency heat recovery drying chamber with a built-in drying host according to claim 1, characterized in that, The condenser (9) has a multi-layered staggered arrangement of condenser tubes and is equipped with heat dissipation fins to improve the condensation effect.

6. A high-efficiency heat recovery drying chamber with a built-in drying host according to any one of claims 1 to 5, characterized in that, The return air component (14) includes: A flap opening (140) is provided on the outer wall of the second equipment compartment (132) below the main air inlet (12); Multiple return air flaps (141) are arranged from top to bottom within the flap openings (140); Cross links (142) are connected to the left and right sides of each return air flap (141) respectively, and are used to link each return air flap (141) to realize opening and closing. One end of the cross links (142) is hinged to the side wall of the flap opening (140). The drive unit (15) is installed on the inner wall of the second equipment compartment (132). The drive end is connected to the other end of the cross link (142) and drives the cross link (142) to change angle, thereby linking the return air flap (141) to open upward or close downward.

7. A high-efficiency heat recovery drying chamber with a built-in drying host as described in claim 6, characterized in that, The drive unit (15) includes a drive air rod (151) installed on the inner wall of the second equipment compartment (132) on one side of the flap opening (140). The piston rod end of the drive air rod (151) is fixedly connected to a slider (152). The end of the cross link (142) away from the hinge point is rotatably inserted into the slider (152).

8. A high-efficiency heat recovery drying chamber with a built-in drying host according to claim 7, characterized in that, A vertical guide rail (153) is provided on the inner wall of the second equipment compartment (132), and the slider (152) moves up and down along the vertical guide rail (153).

9. A high-efficiency heat recovery drying chamber with a built-in drying host according to claim 1, characterized in that, A cooling fan (18) is provided on the front wall of the equipment chassis (1) to dissipate heat for the external evaporator (4).

10. A high-efficiency heat recovery drying chamber with a built-in drying host according to claim 1, characterized in that, Casters (16) are provided at the four corners of the bottom of the equipment chassis (1) to facilitate equipment movement.

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