A high-sealing heat pump drying device

Abstract

The utility model discloses a kind of high sealing heat pump drying devices, including heat exchanger, cover body and air pipe assembly, cover body is equipped with heat exchange cavity, heat exchanger is installed in heat exchange cavity, and heat exchange cavity is divided into first cavity section and second cavity section by heat exchanger. Cover body includes first shell and second shell, first shell and second shell mutually link in a circumferential direction, and are enclosed to form heat exchange cavity. First shell and second shell are sealedly connected by first sealing element;First shell and second shell are equipped with heat preservation layer on;Air pipe assembly includes two air pipes, one air pipe is communicated with first cavity section, and another air pipe is communicated with second cavity section. The first shell and second shell outside the heat exchanger are sealedly linked by first sealing element, and heat preservation layer is equipped on two shells, reduce the loss caused by the leakage of heat energy in cavity due to gap, improve heat exchange efficiency;Meanwhile, it can also effectively reduce the risk of waste gas overflow from the gap of shell link.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, and in particular to a high-sealing heat pump drying device. Background Technology

[0002] In the field of industrial drying, the traditional mode of using steam as the main heat source has long been dominant. Its working logic is as follows: after steam enters the drying system through dedicated pipelines and supporting conveying equipment, it continuously transfers the heat energy it carries to the material to be dried, causing the moisture in the material to be heated and converted into water vapor and released from the material, ultimately completing the drying operation.

[0003] The sealing performance of existing drying equipment is generally poor. Taking the heat exchanger, a core heat exchange component, as an example, gaps are often unavoidably formed during the assembly process due to inadequate control of process precision. This leads to a significant decrease in the sealing performance of the equipment, causing heat energy inside the cavity to leak through the gaps during heat exchange. The heat that could have been used for drying the material is wasted, resulting in a significant reduction in heat exchange efficiency. In addition, if the material itself contains odors or pollutants, the unsealed gaps will become channels for exhaust gas to escape, causing pollution to the surrounding environment. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides a high-sealing heat pump drying device, which has a good sealing effect, reduces the probability of exhaust gas leakage, and effectively improves heat exchange efficiency.

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

[0006] A high-sealing heat pump drying device, comprising:

[0007] Heat exchanger;

[0008] The cover has a heat exchange chamber, the heat exchanger is installed in the heat exchange chamber, and the heat exchange chamber is divided into a first section and a second section, the first section and the second section being opposite to each other;

[0009] The cover includes a first shell and a second shell, which are connected to each other in a circumferential direction and enclose each other to form the heat exchange cavity; the first shell and the second shell are sealed together by a first sealing element; both the first shell and the second shell are provided with a heat insulation layer;

[0010] A duct assembly comprising two ducts, one of which is connected to the first cavity segment and the other of which is connected to the second cavity segment.

[0011] Furthermore, the cover includes two first shells and two second shells. The two first shells are respectively disposed at the top and bottom of the cover. One of the second shells is connected to one side of the two first shells, and the other second shell is connected to the other side of the two first shells. The two first shells and the two second shells are detachably connected to each other in the circumferential direction and enclose each other to form the heat exchange cavity.

[0012] Furthermore, both the first and second housings are provided with heat insulation cavities, and the heat insulation layer is disposed in the heat insulation cavity.

[0013] Furthermore, the first housing includes a first plate segment and two connecting brackets. The first plate segment is provided with the heat insulation cavity, and the two connecting brackets are symmetrically installed on both sides of the first plate segment. The two connecting brackets are respectively connected to the second housing.

[0014] Furthermore, the first plate segment is sealed to the two connecting brackets by a second seal.

[0015] Furthermore, the second housing includes two second plate segments that are detachably connected and enclose the heat insulation cavity.

[0016] Furthermore, the two second plate segments are sealed together by a third seal.

[0017] Furthermore, the heat exchanger is provided with a manifold and a guide pipe. The guide pipe is located on the side of the heat exchanger. One end of the guide pipe is connected to the manifold, and the other end of the guide pipe passes through one of the second housings and extends out of the second housing.

[0018] Furthermore, at least one of the second housings is provided with a through hole, and the guide tube passes through the through hole; the end wall of the through hole is provided with a fourth sealing element, and the fourth sealing element abuts against the outer periphery of the guide tube.

[0019] Furthermore, both of the ducts are provided with a first opening, the first cavity has a second opening, and the second cavity has a third opening, wherein one of the first openings is sealed to the second opening, and the other first opening is sealed to the third opening.

[0020] In summary, the high-sealing heat pump drying device provided by this utility model has the following technical effects: During use, the heat exchanger is installed inside the heat exchange chamber of the cover, dividing the heat exchange chamber into two independent sections. These two sections are connected by corresponding air ducts, providing a stable airflow circulation basis for the drying operation. Because both the first and second shell surfaces of the cover are covered with insulation layers, the transfer path of heat energy from the two chamber sections to the external environment is effectively blocked, reducing unnecessary heat loss and allowing more heat energy to be applied to the material drying process, effectively improving the overall heat exchange efficiency.

[0021] Furthermore, the connection between the first and second shells is sealed using a first sealing element. This enhances the overall sealing performance of the heat exchange chamber, reduces heat loss due to leakage from gaps, and further improves heat exchange efficiency. Simultaneously, it effectively reduces the risk of exhaust gas overflowing from the gaps at the shell connection, thus reducing the probability of pollution to the surrounding environment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0025] Figure 3 This is an exploded view of the structure of this utility model;

[0026] Figure 4 This is an exploded view of the cover body in this utility model;

[0027] Figure 5 This is an exploded view of the first shell in this utility model;

[0028] Figure 6 This is an exploded view of the second shell in this utility model;

[0029] Figure 7 This is a schematic diagram showing the connection between the heat exchanger and the duct assembly in this utility model.

[0030] The meanings of the reference numerals in the attached figures are as follows:

[0031] 10. Heat exchanger; 11. Manifold; 12. Guide pipe; 20. Cover; 21. Heat exchange chamber; 211. First chamber section; 212. Second chamber section; 22. First shell; 221. First plate section; 222. Connecting bracket; 223. Second seal; 23. Second shell; 231. Second plate section; 232. Third seal; 233. Through hole; 30. First seal; 40. Insulation layer; 50. Air duct; 60. Insulation chamber. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0036] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0037] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0038] See Figures 1 to 7 This utility model discloses a high-sealing heat pump drying device, including a heat exchanger 10, a cover 20, and a duct assembly. The cover 20 has a heat exchange chamber 21, in which the heat exchanger 10 is installed, dividing the heat exchange chamber 21 into a first section 211 and a second section 212, which are opposite to each other. The cover 20 includes a first shell 22 and a second shell 23, which are connected to each other circumferentially and enclose the heat exchange chamber 21. The first shell 22 and the second shell 23 are sealed together by a first sealing member 30, and both the first shell 22 and the second shell 23 are provided with a heat insulation layer 40. The duct assembly includes two ducts 50, one of which is connected to the first section 211, and the other duct 50 is connected to the second section 212.

[0039] Based on the above structure, after the heat exchanger 10 is installed in the heat exchange chamber 21 of the cover 20, the heat exchange chamber 21 is divided into a first chamber section 211 and a second chamber section 212 that are independent of each other and distributed in opposite directions. The first chamber section 211 serves as the air inlet and is connected to the corresponding air duct 50, which is responsible for guiding the external airflow into the heat exchanger 10. After the airflow completes heat exchange inside the heat exchanger 10, it enters the second chamber section 212, which serves as the air outlet and is connected to another air duct 50. The heated airflow is then transported to the drying material through the air duct 50, thus forming a complete airflow circulation link and providing a stable and reliable heat source delivery channel for the drying operation.

[0040] Specifically, a first sealing element 30 is provided at the junction of the first housing 22 and the second housing 23. The first sealing element 30, through its own elasticity, fits or fills the junction of the first housing 22 and the second housing 23, effectively eliminating any tiny gaps that may occur during the splicing process. This achieves a tight seal between the first housing 22 and the second housing 23, reducing the probability of hot air leaking out from the splicing gaps. This allows the airflow to follow a preset path, concentrating the high-temperature airflow after heat exchange on the material and improving drying efficiency. Furthermore, the presence of the first sealing element 30 effectively reduces the risk of airflow (especially waste gas containing pollutants) from the first cavity section 211 and the second cavity section 212 leaking out from the splicing gaps, thereby reducing pollution to the surrounding environment.

[0041] More specifically, insulation layers 40 are added to both the first shell 22 and the second shell 23. The insulation layer 40 prevents the pre-cooling of the airflow to be heated in the first cavity 211, avoiding the influence of the external low-temperature environment on the initial temperature of the airflow; simultaneously, it reduces the risk of heat diffusion from the high-temperature airflow in the second cavity 212 to the external environment. This bidirectional insulation significantly reduces heat loss in the entire heat exchange process, allowing more heat to be transferred to the material through the airflow, thereby improving overall heat exchange efficiency.

[0042] It should be noted that the first shell 22 and the second shell 23 in this embodiment can adopt a symmetrical semi-cylindrical structure. Both are designed as semi-cylindrical, and their curvature matches the outer contour of the heat exchanger 10, so that the periphery of the heat exchanger 10 fits tightly against the inner wall of the heat exchange cavity 21. During splicing, the planar sides of the two semi-cylindricals are aligned and fitted, and the flanges are fastened with bolts. The inner side thus forms a circular cavity (i.e., heat exchange cavity 21) that fits the shape of the heat exchanger 10, and the outer side forms a complete cylindrical cover 20. The overall structure has strong adaptability.

[0043] Of course, when the heat exchanger 10 is square or other shapes, multiple first shells 22 and multiple second shells 23 can be spliced ​​together to form a cover 20. Each connection between the first shell 22 and the second shell 23 is provided with a first sealing element 30 so that the multiple first shells 22 and the multiple second shells 23 can be sealed together to form a heat exchange cavity 21 with excellent sealing effect, effectively meeting the usage requirements of heat exchangers 10 of different shapes.

[0044] In addition, the first sealing element 30 can be a sealing gasket made of materials such as silicone or rubber. During assembly, a sealing groove can be reserved on the splicing edge of the first housing 22. After the first sealing element is embedded in the groove, the splicing edge of the second housing 23 is aligned and covered, and then the flanges or splicing flanges of the two housings are tightened with bolts. Under pressure, the first sealing element is tightly squeezed between the sealing groove and the second housing 23, which will not fall off due to airflow impact, and can fill the gap through its own deformation to ensure the sealing effect. Of course, a flat sealing gasket with adhesive backing can also be selected. During assembly, the protective film of the adhesive backing is first peeled off, and the sealing gasket is pasted on the splicing surface of the second housing 23 or the first housing 22. Then, self-tapping screws are used to fix the edge of the sealing gasket (avoiding the sealing core area), thereby reducing the probability of the first sealing element shifting due to adhesive failure under high temperature conditions.

[0045] More specifically, the insulation layer 40 is made of low thermal conductivity materials such as rock wool board and polyurethane, forming a plate-like or layered structure. During installation, it is fixed to the first shell 22 and the second shell 23 by gluing or using connectors (such as screws and bolts), with the insulation layer 40 facing inwards towards the heat exchange chamber 21. For the flat first shell 22 or second shell 23, polyurethane foam insulation layer 40 can be used. The insulation layer 40 is integrally formed on the first shell 22 or second shell 23 by foaming on the shell surface using a mold. This method allows the insulation layer 40 to fit tightly against the shell surface, with no internal gaps, strong integrity, and effectively reduced heat loss.

[0046] Furthermore, the cover 20 includes two first shells 22 and two second shells 23. The two first shells 22 are respectively disposed at the top and bottom of the cover 20. One of the second shells 23 is connected to one side of the two first shells 22, and the other second shell 23 is connected to the other end of the two first shells 22. The two first shells 22 and the two second shells 23 are detachably connected to each other in the circumferential direction and enclose each other to form a heat exchange cavity 21.

[0047] Specifically, during assembly, the first housing 22 at the top and bottom can be designed according to the shape of the upper and lower end faces of the heat exchanger 10 (such as flat, curved, or stepped), while the second housings 23 on both sides are adapted to the side profile of the heat exchanger 10 (such as vertical plane, inclined surface, or irregularly shaped surface with protrusions). Through the combination of the four components, the circumferential space of the heat exchanger 10 can be covered, and the shape of each individual housing can be customized to fit the local structure, resulting in a higher degree of fit between the heat exchange cavity 21 and the heat exchanger 10.

[0048] Meanwhile, the detachable connection design of the first housing 22 and the second housing 23 (such as flange bolt connection) makes the assembly and disassembly of the cover 20 more flexible. When the heat exchanger 10 needs to be inspected, cleaned or replaced, it is not necessary to remove the cover 20 as a whole. The second housing 23 on the corresponding side can be removed separately (such as removing one side of the second housing 23 when inspecting the side pipeline of the heat exchanger 10) or the first housing 22 at the top / bottom end (such as removing the top first housing 22 when inspecting the inlet and outlet of the heat exchanger 10), which effectively shortens the maintenance time.

[0049] More specifically, each joint where the first shell 22 and the second shell 23 are circumferentially connected can be independently equipped with a first sealing element 30, forming a "multi-point sealing" system. Compared with the integral cover 20, the sealing structure of easily leaking parts (such as the corner joint between the top first shell 22 and the side second shell 23) can be specifically strengthened to reduce the risk of exhaust gas leakage caused by local gaps; at the same time, each shell can be individually covered with an insulation layer 40 (such as polyurethane foam for the top first shell 22 and rock wool board for the side second shell 23), which is highly flexible; and the insulation layer 40 at the joints can be overlapped or filled with sealant to form a continuous insulation surface, further improving the heat insulation effect and improving the overall heat exchange efficiency.

[0050] Furthermore, both the first housing 22 and the second housing 23 are provided with heat insulation cavities 60, and the heat insulation layer 40 is disposed in the heat insulation cavity 60.

[0051] Specifically, the heat insulation cavities 60 within the first shell 22 and the second shell 23 provide independent and stable installation space for the insulation layer 40. When heat energy in the heat exchange cavity 21 attempts to transfer to the outside, it is first blocked by the insulation layer 40 within the heat insulation cavity 60. Even if a small amount of heat energy penetrates the insulation layer 40, the relatively still air inside the heat insulation cavity 60 effectively reduces heat loss caused by heat convection, thus forming a dual heat insulation effect of "insulation layer 40 blocking and heat insulation cavity 60 buffering". This makes it more difficult for heat energy in the heat exchange cavity 21 to diffuse to the external environment, thereby reducing unnecessary heat loss and allowing more heat energy to be concentrated for material drying, indirectly improving heat exchange efficiency.

[0052] Furthermore, if the insulation layer 40 is directly placed inside the shell, the metal material of the shell will become the medium for heat transfer. When the heat energy in the heat exchange cavity 21 penetrates the insulation layer 40 and comes into contact with the shell, it will quickly diffuse along the shell to the outside due to the thermal conductivity of the metal, resulting in rapid heat loss. The insulation cavity 60, however, provides physical isolation between the insulation layer 40 and the metal part of the shell. When heat energy penetrates the insulation layer 40, it first enters the air layer of the insulation cavity 60. Because the air inside the insulation cavity 60 is relatively still (without significant convection), the low thermal conductivity of the air significantly slows down the heat transfer rate and reduces the risk of direct contact between the heat energy and the metal shell. Even if a small amount of heat is eventually conducted to the shell, it has already undergone double attenuation by the insulation layer 40 and the air layer, significantly reducing its energy intensity. The amount of heat energy transferred to the outside is naturally very limited, effectively reducing the probability of heat energy being transferred to the outside through the shell and improving the overall heat exchange efficiency.

[0053] It should be noted that the heat insulation cavity 60 in this embodiment can be integrally formed, directly inside the first shell 22 or the second shell 23, so that the heat insulation cavity 60 and the shell form a stable integral structure. Of course, the heat insulation cavity 60 can also be formed by splicing multiple plate segments. When splicing, they are connected by flanges or fasteners, which can not only adapt to the complex contour of irregular shells, but also facilitate the adjustment of the volume or local structure of the heat insulation cavity 60 according to needs. If the plate segments are damaged later, they can be replaced individually, making maintenance convenient.

[0054] Furthermore, the first housing 22 includes a first plate segment 221 and two connecting brackets 222. The first plate segment 221 is provided with a heat insulation cavity 60. The two connecting brackets 222 are symmetrically installed on both sides of the first plate segment 221, and the two connecting brackets 222 are respectively connected to the second housing 23.

[0055] Specifically, the first shell 22 is composed of a first plate segment 221 and two connecting brackets 222. The first plate segment 221 serves as the main structure of the shell and has a pre-set heat insulation cavity 60 inside, which provides space for the subsequent installation of the insulation layer 40 and also undertakes the basic heat insulation and protection function. The two symmetrically distributed connecting brackets 222 are respectively fixedly installed on the two sides of the first plate segment 221 (connected by welding, bolt fastening, etc.) and serve as the connection medium between the first shell 22 and the second shell 23.

[0056] During assembly, a connection structure (such as flange holes, snap-fit ​​grooves, etc.) matching the second housing 23 can be pre-set on the connecting bracket 222, and fixed by bolt tightening or snap-fit ​​engagement. The symmetrically distributed connecting brackets 222 allow for more even stress distribution on the first housing 22 and the second housing 23, reducing deformation caused by stress concentration at the joint, indirectly improving the sealing stability of the overall cover 20, and reducing the risk of airflow (especially exhaust gas containing pollutants) leaking out from the joint gaps, thereby reducing pollution to the surrounding environment.

[0057] More specifically, the first plate segment 221 is sealed to the two connecting brackets 222 via the second seal 223. The second seal 223 (such as a high-temperature resistant sealing strip or a silicone gasket) fills the connection gap between the first plate segment 221 and the two connecting brackets 222, reducing the probability of airflow escaping from the connection gap. It forms an integral sealing system with the first seal 30 at the joint between the first housing 22 and the second housing 23, improving the overall sealing performance of the cover 20.

[0058] Furthermore, the second housing 23 includes two second plate segments 231, which are detachably connected and enclose to form a heat insulation cavity 60.

[0059] Specifically, because the two second plate segments 231 are detachably connected, when the second shell 23 is partially damaged (such as a plate segment deformed due to impact or the insulation layer 40 inside the insulation cavity 60 aging), the corresponding second plate segment 231 can be disassembled and replaced or repaired individually without disassembling the entire second shell 23, which facilitates maintenance. At the same time, the detachable connection facilitates the cleaning of the inside of the insulation cavity 60 in the future (such as removing accumulated dust and debris that affect the insulation effect), ensuring the long-term stability of the insulation function.

[0060] It should be noted that the two second plate segments 231 in this embodiment can be detachably connected by screws or bolts or other connecting parts; they can also be detachably connected by snap-fit ​​or other means.

[0061] More specifically, the two second plate segments 231 are sealed together by a third seal 232. The third seal 232 (such as a high-temperature resistant silicone strip or rubber gasket) fills the gap between the two second plate segments 231, reducing the risk of high-temperature airflow from the heat exchange chamber 21 leaking out from the connection point and improving overall sealing performance. Simultaneously, it reduces the risk of airflow (especially pollutant-containing exhaust gas) leaking out from the joint gap, minimizing pollution to the surrounding environment.

[0062] Furthermore, the heat exchanger 10 is provided with a manifold 11 and a guide pipe 12. The guide pipe 12 is located on the side of the heat exchanger 10. One end of the guide pipe 12 is connected to the manifold 11, and the other end of the guide pipe 12 passes through one of the second housings 23 and extends out of the second housing 23.

[0063] Specifically, one end of the guide pipe 12 passes through one of the second shells 23 and extends to the outside of the shell, where it can directly connect with the external heat exchange medium delivery pipe. During heat exchange operations, the external heat exchange medium (such as hot water or steam) enters the guide pipe 12 through this connection pipe and is then transported to the manifold 11. The manifold 11 collects these heat exchange media and distributes them systematically to the core heat exchange area of ​​the heat exchanger 10. After the heat exchange medium has completed its heat exchange, it is collected again through the manifold 11 and then discharged in the reverse direction through the guide pipe 12 to the external recovery pipe. This directional delivery process prevents the heat exchange medium from flowing randomly inside the heat exchanger 10, reducing uneven heat exchange caused by chaotic flow paths from the source and ensuring the stability of the heat exchange effect.

[0064] More specifically, the extension of the guide pipe 12 into the second housing 23 facilitates the connection of external pipes. This allows workers to complete pipe connections and valve installations from outside the enclosure 20 without needing to enter the heat exchange chamber 21, reducing operational complexity. Simultaneously, the exposed connection points provide a clear view, facilitating precise alignment of pipe interfaces and minimizing connection errors.

[0065] It should be noted that during the actual assembly process, a through hole can be pre-machined on one of the second housings 23 as a passage for the guide tube 12. The diameter of the through hole must be compatible with the outer diameter of the guide tube 12 so that the guide tube 12 can be smoothly inserted.

[0066] Furthermore, at least one of the second housings 23 is provided with a through hole 233, and the guide tube 12 passes through the through hole 233; the end wall of the through hole 233 is provided with a fourth sealing element, and the fourth sealing element abuts against the outer periphery of the guide tube 12.

[0067] Specifically, during assembly, the guide tube 12 is inserted into the through hole 233. The through hole 233 provides positioning support for the guide tube 12, reducing the risk of displacement due to vibration during media transport. Simultaneously, a fourth sealing element is provided on the end wall of the through hole 233. This fourth sealing element tightly abuts against the outer circumference of the guide tube 12, filling the gap between the through hole 233 and the guide tube 12. This reduces the leakage of airflow from the insulation cavity 60 or heat exchange cavity 21 through the connection gap between the through hole 233 and the guide tube 12, further improving the overall sealing performance of the structure.

[0068] It should be noted that the fourth seal can be an existing annular silicone seal or rubber ring, and the shape of the fourth seal is adapted to the end wall of the through hole 233 and the outer periphery of the guide tube 12 so that the fourth seal can fit tightly against the outer periphery of the guide tube 12 after installation.

[0069] Furthermore, both ducts 50 are provided with a first opening, the first cavity section 211 has a second opening, and the second cavity section 212 has a third opening. One of the first openings is sealed to the second opening, and the other first opening is sealed to the third opening.

[0070] Specifically, mounting holes are provided on both sides of the cover 20, and corresponding mounting holes are also provided on the two air ducts 50. During assembly, the mounting holes on the two air ducts 50 are aligned with the mounting holes on both sides of the cover 20, and then fastened with bolts or other connectors. After installation, external airflow can enter through the first opening of one of the air ducts 50, enter the first chamber section 211 through the second opening, complete heat exchange, and then exit through the second chamber section 212 and the third opening into the other air duct 50, thus forming a complete airflow circulation channel. This allows the airflow to be directionally introduced or discharged, fully participating in heat exchange and improving heat exchange efficiency.

[0071] More specifically, sealing structures (such as silicone rings or rubber rings) can be installed at the mating surfaces of the two first openings and the second and third openings. The sealing structures will elastically deform as the connectors are tightened, thereby filling the tiny gaps at the mating points. This reduces the probability of internal airflow overflowing at the connection points between the duct 50 and the first cavity section 211 and the second cavity section 212, thus improving the overall sealing performance.

[0072] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A high-sealing heat pump drying device, characterized in that, include: Heat exchanger; The cover has a heat exchange chamber, the heat exchanger is installed in the heat exchange chamber, and the heat exchange chamber is divided into a first section and a second section, the first section and the second section being opposite to each other; The cover includes a first shell and a second shell, which are connected to each other in a circumferential direction and enclose each other to form the heat exchange cavity; the first shell and the second shell are sealed together by a first sealing element; both the first shell and the second shell are provided with a heat insulation layer; A duct assembly comprising two ducts, one of which is connected to the first cavity segment and the other of which is connected to the second cavity segment.

2. The high-sealing heat pump drying device as described in claim 1, characterized in that, The cover includes two first shells and two second shells. The two first shells are respectively disposed at the top and bottom of the cover. One of the second shells is connected to one side of the two first shells, and the other second shell is connected to the other side of the two first shells. The two first shells and the two second shells are detachably connected to each other in the circumferential direction and enclose the heat exchange cavity.

3. The high-sealing heat pump drying device as described in claim 2, characterized in that, Both the first and second housings are provided with heat insulation cavities, and the heat insulation layer is disposed in the heat insulation cavity.

4. The high-sealing heat pump drying device as described in claim 3, characterized in that, The first housing includes a first plate segment and two connecting brackets. The first plate segment is provided with the heat insulation cavity. The two connecting brackets are symmetrically installed on both sides of the first plate segment and are respectively connected to the second housing.

5. The high-sealing heat pump drying device as described in claim 4, characterized in that, The first plate segment is sealed to the two connecting brackets by a second seal.

6. The high-sealing heat pump drying device as described in claim 3, characterized in that, The second housing includes two second plate segments that are detachably connected and enclose the heat insulation cavity.

7. The high-sealing heat pump drying device as described in claim 6, characterized in that, The two second plate segments are sealed together by a third seal.

8. The high-sealing heat pump drying device as described in claim 2, characterized in that, The heat exchanger is provided with a collector pipe and a guide pipe. The guide pipe is located on the side of the heat exchanger. One end of the guide pipe is connected to the collector pipe, and the other end of the guide pipe passes through one of the second housings and extends out of the second housing.

9. The high-sealing heat pump drying device as described in claim 8, characterized in that, At least one of the second housings is provided with a through hole, and the guide tube passes through the through hole; the end wall of the through hole is provided with a fourth sealing element, and the fourth sealing element abuts against the outer periphery of the guide tube.

10. The high-sealing heat pump drying device according to any one of claims 1-9, characterized in that, Both of the ducts are provided with a first opening, the first cavity has a second opening, and the second cavity has a third opening. One of the first openings is sealed to the second opening, and the other first opening is sealed to the third opening.

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