Adsorption bed and its heat transfer components

Abstract

This invention discloses a heat transfer component for an adsorption bed, comprising: a heat-conducting pipe, the wall of which separates a heat exchange fluid cavity from a mass transfer cavity; and a tree-shaped heat-conducting structure, the root of which is connected to the wall of the heat-conducting pipe and thermally connected, and the top extending away from the pipe wall to reach into the mass transfer cavity. When heat exchange is required between the heat exchange fluid and the adsorbent in the mass transfer cavity, the tree-shaped heat-conducting structure not only increases the surface area, resulting in high heat transfer efficiency with the adsorbent, but also forms a growth structure in the heat transfer direction, allowing for orderly heat transfer and further improving transfer efficiency. Simultaneously, the uniform heating of the adsorbent facilitates the flow of the adsorbent working fluid. This invention also discloses an adsorption bed including the above-mentioned heat transfer component.

Description

Technical Field

[0001] This invention relates to the field of adsorption technology, and more specifically, to a heat transfer component for an adsorption bed, and to an adsorption bed including the aforementioned heat transfer component. Background Technology

[0002] At low temperatures, the adsorbent in an adsorption bed can adsorb or / and bind to gaseous adsorbates. This can be a physical change, such as the gaseous working fluid changing into a liquid state to be adsorbed onto the adsorbent; or a chemical change, where the adsorbate chemically binds to the adsorbent, resulting in the adsorption of the adsorbate. At high temperatures, the adsorbent can absorb heat to generate gaseous adsorbates, which are then released. This process is the reverse of the above; it can be a change from liquid to gas or a chemical change to release the gaseous working fluid.

[0003] During the desorption and / or adsorption stages, heat exchange fluid is required to exchange heat with the adsorbent in the adsorption chamber. Therefore, an adsorption chamber is formed within the adsorption bed, through which heat transfer channels are inserted. The fluid in these channels can transfer heat with the adsorbent in the adsorption chamber. Simultaneously, a mass transfer cavity is also provided within the adsorption chamber to allow the gaseous adsorbent to flow through it. During the adsorption stage, the gaseous adsorbent formed in the evaporator is transported to the mass transfer cavity, where it contacts and is received by the adsorbent. During the desorption stage, the adsorbent desorbs the gaseous adsorbent, which enters the mass transfer cavity and then exits the condenser from the outlet of the mass transfer cavity.

[0004] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: the adsorbent needs to exchange heat with the heat exchange channel, while the adsorption working fluid needs to be combined with the adsorbent. How to efficiently transfer mass and heat has become an urgent problem for adsorption beds. Summary of the Invention

[0005] In view of this, the first objective of the present invention is to provide a heat transfer component for an adsorption bed that can effectively solve the problem of poor heat transfer performance of current heat transfer components. The second objective of the present invention is to provide an adsorption bed including the above-mentioned heat transfer component.

[0006] To achieve the first objective mentioned above, the present invention provides the following technical solution: A heat transfer component for an adsorption bed, comprising: A heat pipe, the wall of which is used to separate the heat exchange fluid cavity from the mass transfer cavity; A tree-shaped heat-conducting structure, wherein the root of the tree-shaped heat-conducting structure is connected to the wall of the heat-conducting pipe and heat-conductingly connected, and the top extends away from the pipe wall to enter the mass transfer cavity.

[0007] In use, the aforementioned heat transfer components are placed within the chambers of the adsorption bed. If necessary, sealing components can be used to create heat exchange fluid chambers and mass transfer chambers on either side of the heat-conducting pipe. The mass transfer chamber contains adsorbent, ensuring it is in thermal contact with at least the outer surface of the dendritic heat-conducting structure. A heat exchange fluid flows through the heat exchange fluid chamber. During the adsorption phase, the heat exchange fluid is a low-temperature fluid. A gaseous adsorbent flows through the cavity in the mass transfer chamber. The gaseous adsorbent releases heat during absorption by the adsorbent, which is then transferred to the adsorbent, then to the surface of the dendritic heat-conducting structure, and finally to the wall of the heat-conducting pipe, and from there to the heat exchange fluid. During the desorption phase, heat is transferred from the heat exchange fluid to the pipe wall, then to the dendritic heat-conducting structure, and finally to the adsorbent, thus desorbing the adsorbent. In the aforementioned heat transfer components, when heat exchange is required between the heat exchange fluid and the adsorbent in the mass transfer chamber, the dendritic thermally conductive structure not only increases the surface area, resulting in high heat transfer efficiency between the adsorbent and the heat exchange fluid, but also creates a growth structure along the heat transfer direction, allowing for orderly heat transfer and further improving transfer efficiency. Simultaneously, the uniform heating of the adsorbent facilitates the flow of the adsorbent working fluid. In summary, the aforementioned heat transfer components for the adsorption bed effectively solve the problem of poor heat transfer performance in current heat transfer components.

[0008] In some embodiments, the outer wall of the heat pipe is connected to the root of the tree-shaped heat-conducting structure, and a plurality of the tree-shaped heat-conducting structures are uniformly arranged along the circumferential direction of the outer wall of the heat pipe.

[0009] In some embodiments, two heat-conducting pipes of different diameters are nested together, and the cavity formed between them serves as the heat exchange fluid cavity; the inner wall of the heat-conducting pipe located inside is connected to the root of the tree-shaped heat-conducting structure, and a plurality of the tree-shaped heat-conducting structures are uniformly arranged along the circumferential direction of the inner wall of the heat-conducting pipe.

[0010] In some embodiments, the heat pipe is a circular pipe or an elliptical pipe.

[0011] In some embodiments, the tree-shaped heat-conducting structure and the heat-conducting pipe are an integral part, the integral part being a stretched member formed by extending along the extension direction of the heat-conducting pipe, the cross-section of the tree-shaped heat-conducting structure being tree-shaped; and at least one section of the integral part having a cross-sectional shape and size that are equal at all points along the extension direction.

[0012] In some embodiments, the tree-shaped thermally conductive structure includes: The ribs are arranged in a forked cross-section; The main rib has a long strip-shaped cross-section and extends radially. The first end of the main rib is fixedly connected to the wall of the heat-conducting pipe and in thermal contact. The two rib groups are respectively arranged on both sides of the thickness direction of the main rib.

[0013] In some embodiments, the rib assembly includes: The branch-shaped rib has, in cross-section, a first end connected to the middle of the radially extending part of the main rib, and a second end extending radially outward away from the main rib. In cross-section, the outer rib portion has a first end connected to the branch-shaped rib and a second end extending away from the main rib. In the inner rib portion, in cross-section, the first end is connected to the branch-shaped rib, and the second end extends toward the main rib.

[0014] In some embodiments, the distance between the second end of the branch-shaped fin and the central axis of the heat pipe is less than the distance between the second end of the main fin and the central axis of the heat pipe, and the fin group includes two outer fin portions and one inner fin portion; The first end of the inner rib portion is connected to the second end of the branch-shaped rib and extends circumferentially, forming an arc-shaped structure that bulges outward radially. The second end of the inner rib portion extends toward the second end of the main rib. Of the two outer rib portions, one is the first outer rib portion and the other is the second outer rib portion; The first end of the first outer rib portion is connected to the second end of the branch-shaped rib and extends circumferentially, forming an arc-shaped structure that convexes radially outward, and the second end extends radially outward.

[0015] The first end of the second outer rib portion is connected to the middle of the branch-shaped rib in the extension direction, and extends circumferentially and has a radially outward convex arc structure, and the second end of the second outer rib portion bends toward the root.

[0016] In some embodiments, the outer rib portions of adjacent tree-shaped thermal conductive structures are arranged close to each other so that the adsorbent can transition between them.

[0017] In some embodiments, a first adsorbent layer is attached to the surface of the tree-shaped heat-conducting structure, and a second adsorbent layer is attached to the wall of the heat-conducting pipe that connects to the mass transfer cavity; the surfaces of the first adsorbent layer and the second adsorbent layer form a mass transfer cavity.

[0018] To achieve the second objective mentioned above, the present invention also provides an adsorption bed, which includes any of the aforementioned heat transfer components and a chamber, wherein the heat transfer component is disposed in the chamber. Since the aforementioned heat transfer components possess the above-mentioned technical effects, the adsorption bed having such heat transfer components should also possess corresponding technical effects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the cross-sectional structure of the heat transfer component provided in an embodiment of the present invention; Figure 2 A schematic diagram of the cross-sectional structure of the heat transfer component with attached adsorbent provided in an embodiment of the present invention; Figure 3 A schematic diagram of the cross-sectional structure of another heat transfer component provided in an embodiment of the present invention; Figure 4 A schematic diagram of the cross-sectional structure of another heat transfer component provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the tree-shaped heat-conducting structure provided in an embodiment of the present invention.

[0021] The following labels are shown in the attached diagram: 1. Heat pipe; 2. Tree-shaped heat conduction structure; 3. Mass transfer cavity; 4. Heat exchange fluid cavity; 5. First adsorbent layer; 6. Second adsorbent layer; Main rib 21, rib group 22; Branch-shaped rib 221, inner rib portion 222, first outer rib portion 223, second outer rib portion 224. Detailed Implementation

[0022] This invention discloses a heat transfer component for an adsorption bed, which effectively solves the problem of poor heat transfer performance of current heat transfer components.

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-5 , Figure 1 A schematic diagram of the cross-sectional structure of the heat transfer component provided in an embodiment of the present invention; Figure 2 A schematic diagram of the cross-sectional structure of the heat transfer component with attached adsorbent provided in an embodiment of the present invention; Figure 3 A schematic diagram of the cross-sectional structure of another heat transfer component provided in an embodiment of the present invention; Figure 4A schematic diagram of the cross-sectional structure of another heat transfer component provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the tree-shaped heat-conducting structure 2 provided in an embodiment of the present invention.

[0025] In some embodiments, a heat transfer component for an adsorption bed is provided as a separator to separate the heat exchange fluid cavity 4 and the mass transfer cavity 3. Of course, in specific applications, the heat transfer component itself can form the separated heat exchange fluid cavity 4 and mass transfer cavity 3, or it can be combined with other structures or multiple heat transfer components to form the separated heat exchange fluid cavity 4 and mass transfer cavity 3. Specifically, the appropriate installation method can be selected according to the structure of the heat transfer component and the requirements of heat and mass transfer.

[0026] In some embodiments, the heat transfer component includes a heat pipe 1 and a tree-shaped heat transfer structure 2.

[0027] The wall of the heat pipe 1 separates the heat exchange fluid cavity 4 and the mass transfer cavity 3, meaning it separates at least one of the heat exchange fluid cavity 4 and at least one of the mass transfer cavities 3. The heat exchange fluid cavity 4 is used for the flow of a heat exchange fluid, which can be a cooling fluid during the adsorption stage or a heating fluid during the desorption stage. The mass transfer cavity 3 contains an adsorbent and has a cavity portion for the flow of a gaseous adsorbent. During the adsorption stage, the adsorbent adsorbs the gaseous adsorbent, and during the desorption stage, the adsorbent desorbs the gaseous adsorbent.

[0028] Generally, the cavity of the heat pipe 1 is a heat exchange fluid cavity 4, or it can be further divided into a heat exchange fluid cavity 4 and a mass transfer cavity 3. In one specific embodiment, one side of the heat pipe 1 faces entirely towards at least one of the heat exchange fluid cavities 4, and the other side of the heat pipe 1 faces entirely towards at least one of the mass transfer cavities 3. Compared to partially separating the heat exchange fluid cavity 4 and the mass transfer cavity 3, this provides a better separation effect, allowing for sufficient heat transfer through the wall of the heat pipe 1. In another specific embodiment, the inner wall of the heat pipe 1 can face at least one of the heat exchange fluid cavities 4, and the outer wall can face entirely towards at least one of the mass transfer cavities 3.

[0029] During use, the heat exchange fluid in the heat exchange fluid cavity 4 can transfer heat to the adsorbent in the mass transfer cavity 3 through the tube wall. Therefore, the tube wall should have good thermal conductivity and sufficient barrier effect to the heat exchange fluid.

[0030] The tree-shaped heat-conducting structure 2 is a type of tree structure. A tree structure refers to a structure that gradually branches out into multiple strips from the root to the top, and these strips can further branch out into more strips, gradually expanding. Specifically, this tree structure can also be called a topological structure or a bunch-of-pearls structure; for example, the tree-shaped heat-conducting structure 2 here could be a topological heat-conducting structure. The tree-shaped heat-conducting structure 2 is tree-shaped: it can be a three-dimensional tree structure, in which case the strips can extend in all directions; or it can have a tree-shaped cross-section, in which case the strips only extend laterally, while in the longitudinal direction, each strip can extend into a sheet-like structure. The tree-shaped heat-conducting structure 2 refers to a heat-conducting structure, such as a metal structure.

[0031] The root of the tree-shaped heat-conducting structure 2 is connected to the wall of the heat-conducting pipe 1 and makes heat-conducting contact. The root of the tree-shaped heat-conducting structure 2 and the heat-conducting pipe 1 can be fixedly connected later, such as by welding; or they can be integrally molded, i.e., manufactured as a single piece. The tree-shaped heat-conducting structure 2 and the heat-conducting pipe 1 can be made of the same material or different materials.

[0032] Furthermore, the top of the tree-shaped heat-conducting structure 2 extends away from the pipe wall and into the mass transfer cavity 3, forming an extended space in the wall thickness direction. This allows the heat from the heat exchange fluid to be rapidly transferred from the heat exchange fluid cavity 4 to the mass transfer cavity 3 along the wall thickness direction. From a positional perspective, it can also be considered that the top of the tree-shaped heat-conducting structure 2 is farther from the heat exchange fluid it transfers heat to than the root, thus improving heat transfer in the lateral direction.

[0033] When the inner wall surface of the heat pipe 1 faces the mass transfer cavity 3, the root of the tree-shaped heat conduction structure 2 can be connected to the inner wall surface of the heat pipe 1. When the outer wall surface of the heat pipe 1 faces the mass transfer cavity 3, the root of the tree-shaped heat conduction structure 2 can be connected to the outer wall surface of the heat pipe 1.

[0034] In use, the aforementioned heat transfer components are placed within the chambers of the adsorption bed. If necessary, sealing components can be used to form a heat exchange fluid chamber 4 and a mass transfer chamber 3 on either side of the heat-conducting pipe 1. The mass transfer chamber 3 contains an adsorbent to ensure at least thermal contact with the outer surface of the dendritic heat-conducting structure 2, while a heat exchange fluid flows through the heat exchange fluid chamber 4. During the adsorption phase, the heat exchange fluid is a low-temperature fluid. A gaseous adsorbent flows through the cavity in the mass transfer chamber 3. The gaseous adsorbent releases heat during absorption by the adsorbent, and this heat is transferred to the adsorbent, then through the adsorbent to the surface of the dendritic heat-conducting structure 2, and then through the dendritic heat-conducting structure 2 to the wall of the heat-conducting pipe 1, and finally from the pipe wall to the heat exchange fluid. During the desorption phase, heat is transferred from the heat exchange fluid to the pipe wall, then to the dendritic heat-conducting structure 2, and finally to the adsorbent, thus desorbing the adsorbent. In the aforementioned heat transfer component, when heat exchange is required between the heat exchange fluid and the adsorbent in the mass transfer chamber 3, the dendritic thermally conductive structure 2 not only increases the surface area, resulting in high heat transfer efficiency with the adsorbent, but also forms a growth structure in the heat transfer direction, allowing heat to be transferred in an orderly manner, further improving the transfer efficiency. Simultaneously, the uniform heating of the adsorbent facilitates the flow of the adsorbent working fluid. In summary, the aforementioned heat transfer component for the adsorption bed effectively solves the problem of poor heat transfer performance in current heat transfer components.

[0035] In some embodiments, for ease of connection, it is preferable that the outer wall of the heat pipe 1 is connected to the root of the tree-shaped heat-conducting structure 2, that is, when in use, the outer wall surface of the heat pipe 1 faces the corresponding mass transfer cavity 3. In this case, the cavity of the heat pipe 1 can be entirely a heat exchange fluid cavity 4, such as... Figure 2 As shown.

[0036] In some embodiments, an inner tube may also be provided inside the cavity of the heat pipe 1, forming an annular cavity between the inner tube and the heat pipe 1 to serve as a heat exchange fluid cavity 4. The inner tube may also serve as another heat pipe 1, and its inner wall may be further provided with a tree-shaped heat-conducting structure 2. In this case, the inner cavity of the inner tube serves as a mass transfer cavity 3. Openings can be made at both ends along the length of the tube to serve as mass transfer ports, allowing mass transfer between the mass transfer cavity 3 and the outside.

[0037] like Figure 3 As shown. In Figure 3 Based on the structure shown, multiple tree-shaped heat-conducting structures 2 can be further arranged on the outer wall surface of the external heat pipe 1, such as... Figure 4 As shown. At this time, the internal mass transfer chamber 3 can be connected to the outside through the end opening of the inner tube, or it can be connected to the outside through multiple mass transfer channels that penetrate the inner and outer tube walls and are separated from the heat exchange fluid chamber 4, so as to realize the mass transfer function.

[0038] Furthermore, to ensure uniform heat dissipation, it is preferable to arrange multiple tree-shaped heat-conducting structures 2 evenly along the circumferential direction of the outer wall of the heat pipe 1. Since the outer wall of the heat pipe 1 tends to expand outwards, the tree-shaped heat-conducting structures 2 can be arranged more effectively. The multiple tree-shaped heat-conducting structures 2 are distributed in the mass transfer cavity 3, preferably with their strip-shaped structures evenly or nearly evenly distributed within the mass transfer cavity 3, to achieve better heat transfer performance.

[0039] In some embodiments, the heat pipe 1 can be a circular or elliptical tube. An arc-shaped pipe wall is formed, and the outer surface of the arc-shaped pipe wall is more conducive to setting the tree-shaped heat-conducting structure 2, thus achieving better heat conduction.

[0040] Of course, the heat pipe 1 can also be a flat pipe. Although the contact area between the pipe wall and the heat exchange fluid is increased and the heat exchange effect is better, it is not conducive to setting up a tree-shaped heat conduction structure 2.

[0041] In some embodiments, in order to improve heat conduction and avoid contact thermal resistance, it is preferable that the tree-shaped heat conduction structure 2 and the heat conduction pipe 1 are integral parts, that is, the tree-shaped heat conduction structure 2 and the heat conduction pipe 1 are formed at the same time, so that the tree-shaped heat conduction structure 2 and the heat conduction pipe 1 are formed respectively during the forming process.

[0042] Specifically, for ease of manufacturing, the aforementioned integral part can be a stretched part formed by extending along the extension direction of the heat pipe 1. A stretched part refers to a structure constructed by moving the cross-section of its base material along a certain direction, and the area traversed by its solid portion. For example, it can be formed by extrusion, and the specific forming method can refer to the forming method of aluminum profiles. The stretched part can be the aforementioned base material, in which case the size and shape of each cross-section of the stretched part are equal; alternatively, it can be the aforementioned base material with a small number of openings or other forms of removal. Specifically, the cross-sectional shape and size of at least one section of the integral part along the extension direction can be equal.

[0043] For the stretched component, i.e., the tree-shaped heat-conducting structure 2 is also a stretched component, then the cross-section of the tree-shaped heat-conducting structure 2 is tree-shaped. That is, it extends longitudinally because there is no need for longitudinal heat transfer between adsorbents, only lateral heat transfer is required.

[0044] In some embodiments, the tree-shaped heat-conducting structure 2 may include a fin group 22 and a main fin 21.

[0045] The fin assembly 22 has a tree-branch-shaped cross-section, meaning that multiple fins are combined to form a structure that can be Y-shaped, X-shaped, or U-shaped to form multi-level branches. The cross-section refers to the section perpendicular to the extension direction of the heat pipe 1.

[0046] The main fin 21 has a long, elongated cross-section that extends radially to ensure heat transfer in the radial direction. The thickness of the main fin 21 can be greater than the thickness of each fin in the fin group 22. Alternatively, the thickness of the main fin 21 can gradually decrease along the direction away from the pipe wall it is connected to, to be designed according to the direction of heat transfer and reduce unnecessary space occupation. The first end of the main fin 21 is fixedly connected to and thermally contacts the wall of the heat pipe 1, thus achieving a fixed connection and thermal contact between the tree-shaped heat-conducting structure 2 and the wall of the heat pipe 1. Specific requirements and methods are described above.

[0047] Furthermore, two of the branch-shaped ribs can be respectively positioned on both sides of the main rib 21 in the thickness direction, so as to extend in the thickness direction of the main rib 21. The thickness direction of the main rib 21 and other ribs is generally perpendicular to the extension direction of the heat pipe 1.

[0048] Further details are attached. Figure 5 As shown, the rib assembly 22 can include a branch-type rib 221, an outer rib portion, and an inner rib portion 222.

[0049] The branch-shaped rib 221 is elongated in cross-section. The first end is connected to the middle of the main rib 21 in the extension direction, and the second end extends radially outward away from the main rib 21 to extend the heat in the external space in the circumferential direction. At the same time, the radial outward extension can make the distribution more uniform.

[0050] The outer rib portion is elongated in cross-section. The first end of the outer rib portion is connected to the branch-shaped rib 221, and the second end extends away from its corresponding main rib 21 to better expand and branch outward.

[0051] The inner rib portion 222 is elongated in cross-section. The first end of the inner rib portion 222 is connected to the branch-type rib 221, and the second end extends toward the corresponding main rib 21 to further fill the extended space formed by the branch-type rib 221 and the main rib 21, so as to ensure both distribution density and uniform distribution.

[0052] It should be noted that the rib assembly 22 may include only one branch-type rib 221, but may include one or more outer rib portions and one or more inner rib portions 222. Specifically, this may need to be configured.

[0053] Continue to refer to the appendix Figure 5 For better uniform distribution, the rib group 22 preferably includes two outer rib portions and one inner rib portion 222.

[0054] The distance between the second end of the branch-type fin 221 and the central axis of the heat pipe 1 is less than the distance between the second end of the main fin 21 and the central axis of the heat pipe 1. That is, the circumferential diameter of the second end of the main fin 21 is greater than the diameter of the second end of the branch-type fin 221, which can provide a space for the outer fin portion and the inner fin portion 222 connected to the second end of the branch-type fin 221.

[0055] The first end of the inner rib portion 222 connects to the second end of the branch-type rib 221, extends circumferentially, and has a radially outward convex arc-shaped structure. Specifically, the second end of the inner rib portion 222 can be brought closer to the second end of the main rib 21. Specifically, the distance between the second end of the inner rib portion 222 and the central axis of the heat pipe 1 is equal to the distance between the second end of the main rib 21 and the central axis of the heat pipe 1, so as to form a better uniform spread. At this time, the outer section of the main rib 21, the inner rib portion 222, and the branch-type rib 221 form a triangular cavity, and an opening is formed between the second end of the inner rib portion 222 and the second end of the main rib 21 to further increase the heat transfer area.

[0056] The distance between the second end of the inner rib portion 222 and the central axis of the heat pipe 1 is equal to or approximately equal to the distance between the second end of the main rib portion 21 and the central axis of the heat pipe 1. The error should not exceed 10%, which can also ensure a more uniform spread.

[0057] Of the two outer rib portions, one is the first outer rib portion 223 and the other is the second outer rib portion 224.

[0058] The first end of the first outer rib portion 223 connects to the second end of the branch-shaped rib 221 and extends circumferentially, forming a radially outward convex arc-shaped structure. The second end of the first outer rib portion 223 extends radially outward, meaning it gradually extends radially outward from the first end to the second end. At this time, a V-shaped structure with a relatively large opening angle is formed between the first outer rib portion 223 and the inner rib portion 222.

[0059] The first end of the second outer rib portion 224 is connected to the middle of the branch-shaped rib 221 in the direction of extension, and extends circumferentially with a radially outward convex arc-shaped structure. The second end bends towards the root, that is, extends towards the heat pipe 1. At this time, the radial distance between the second end of the second outer rib portion 224 and the second end of the first outer rib portion 223 gradually increases, so as to present a gradually expanding space for better expansion.

[0060] The aforementioned rib structures extend to form arc-shaped structures, thereby increasing the exposed surface area. The tree-shaped thermally conductive structure 2 with the aforementioned rib group 22 can achieve better performance when an adsorbent is attached.

[0061] In some embodiments, when multiple dendritic heat-conducting structures 2 are provided, the outer rib portions of adjacent dendritic heat-conducting structures 2 can be arranged close together to allow the adsorbent to transition between them. They do not need to be connected to each other; a certain gap can be formed. Based on the characteristics of the adsorbent itself, it can still adhere continuously to improve strength. Of course, the gaps can also be relatively large.

[0062] Specifically, as shown in the attached document Figure 5 As shown, in two adjacent dendritic heat-conducting structures 2, the second ends of the first outer rib portion 223 of one dendritic heat-conducting structure 2 and the second ends of the other first outer rib portion 223 are close to each other, with a gap between them, but this allows the adsorbent to extend continuously between them; correspondingly, the second ends of the second outer rib portion 224 of one dendritic heat-conducting structure 2 and the second ends of the other second outer rib portion 224 are close to each other, with a gap between them, but this also allows the adsorbent to extend continuously between them. Since the adsorbent usually needs to be mixed with the binder, an appropriate gap arrangement can also allow the adsorbent to extend continuously between them.

[0063] In some embodiments, cavities are formed around the fins, not limited to cavities formed around a single tree-shaped heat-conducting structure 2, but also cavities formed around adjacent tree-shaped heat-conducting structures 2, and cavities formed in conjunction with the tube wall.

[0064] In use, a portion of the cavity can be used to hold the adsorbent particles, while the other portion serves as a mass transfer channel. The ribs between the cavities can be fitted with holes and / or gaps to allow the adsorbent to flow between the mass transfer channel and the adsorbent particles. Alternatively, the entire cavity can be filled with adsorbent particles to allow for radial outward transfer of the adsorbent.

[0065] In some embodiments, the surface of the tree-shaped heat-conducting structure 2 may be coated with a first adsorbent layer 5, while the wall of the heat-conducting pipe 1 connected to the mass transfer cavity 3 may be coated with a second adsorbent layer 6.

[0066] Furthermore, a mass transfer cavity can be formed on the surfaces of the first adsorbent layer 5 and the second adsorbent layer 6. Specifically, the lateral dimension of the cavity formed by the fins must be greater than the thickness of the adsorbent layer, and more than twice the thickness, to ensure the formation of the mass transfer cavity, which serves as a mass transfer channel. In one operating state, during the adsorption phase, the gaseous adsorbent from the evaporator enters through the mass transfer cavity to contact the first adsorbent layer 5 or the second adsorbent layer 6 on the cavity wall, where it is adsorbed. During the desorption phase, the gaseous adsorbent desorbed from the first adsorbent layer 5 and the second adsorbent layer 6 enters the mass transfer cavity and then flows from the cavity to the condenser. The adsorbent and adsorbent combine to form an adsorbent pair.

[0067] The surface of the tree-shaped heat-conducting structure 2 is coated with a first adsorbent layer 5, and the wall of the heat-conducting pipe 1 connected to the mass transfer cavity 3 is coated with a second adsorbent layer 6. The coating method can be a smearing method, a dip coating method, a spray coating method, or a spin coating method. The arc-shaped structure is also conducive to spin coating.

[0068] In some embodiments, both the heat pipe 1 and the tree-shaped heat-conducting structure 2 may be made of metal.

[0069] In some embodiments, the tree-shaped heat-conducting structure 2 in some embodiments, i.e. the topology-optimized structure, can be used to determine the high-performance heat transfer geometry. Based on additive manufacturing technology and topology optimization methods, a coating-type modular high-efficiency adsorption heat exchange device is designed, which reduces the parasitic heat loss of the support structure and minimizes the inherent heat transfer resistance of the adsorption bed.

[0070] The topology-optimized structure, coated with adsorbent, creates mass transfer channels between its gaps, allowing refrigerant to enter or leave the adsorption bed in a timely manner during the desorption / adsorption process, thus improving the mass transfer efficiency of the adsorption bed. Several modular, high-efficiency adsorption heat exchangers can be freely combined according to the adsorption refrigeration requirements, enhancing the adaptability of the adsorption bed to changes in refrigeration demand.

[0071] In addition, the geometry of the modular high-efficiency adsorption heat exchanger is improved through topology optimization in order to minimize costs while meeting the required adsorption performance and heat and mass transfer capabilities.

[0072] Based on the heat transfer components provided in the above embodiments, the present invention also provides an adsorption bed, which includes any one of the heat transfer components in the above embodiments, including a chamber, wherein the heat transfer component is disposed in the chamber. Since this adsorption bed uses the heat transfer components in the above embodiments, the beneficial effects of this adsorption bed are explained in the above embodiments.

[0073] Furthermore, the adsorption bed can be equipped with multiple heat transfer components as modular parts, evenly arranged in the adsorption bed chamber. In this case, each heat transfer component has a multi-port structure at both ends of its heat pipe 1, serving as a collector and a distributor, respectively.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat transfer component for an adsorption bed, characterized in that, include: Heat pipe (1), the wall of which is used to separate the heat exchange fluid cavity (4) from the mass transfer cavity (3). A tree-shaped heat-conducting structure (2) has its root connected to the wall of the heat-conducting pipe (1) and is heat-conductingly connected, and its top extends away from the pipe wall to enter the mass transfer cavity (3).

2. The heat transfer component of the adsorption bed according to claim 1, characterized in that, The outer wall of the heat pipe (1) is connected to the root of the tree-shaped heat-conducting structure (2), and multiple tree-shaped heat-conducting structures (2) are evenly arranged along the circumferential direction of the outer wall of the heat pipe (1).

3. The heat transfer component of the adsorption bed according to claim 1, characterized in that, Two heat-conducting pipes (1) of different diameters are nested together, and the cavity formed between them serves as the heat exchange fluid cavity (4); the inner wall of the heat-conducting pipe (1) located inside is connected to the root of the tree-shaped heat-conducting structure (2), and multiple tree-shaped heat-conducting structures (2) are evenly arranged along the circumferential direction of the inner wall of the heat-conducting pipe (1).

4. The heat transfer component of the adsorption bed according to claim 2, characterized in that, The heat pipe (1) is a round or elliptical tube.

5. The heat transfer component of the adsorption bed according to claim 4, characterized in that, The tree-shaped heat-conducting structure (2) and the heat-conducting pipe (1) are an integral part. The integral part is a stretched part formed by extending along the extension direction of the heat-conducting pipe (1). The cross-section of the tree-shaped heat-conducting structure (2) is tree-shaped. The cross-sectional shape and size of at least one section of the integral part along the extension direction are equal.

6. The heat transfer component of the adsorption bed according to claim 4, characterized in that, The tree-shaped heat-conducting structure (2) includes: Rib group (22), with a forked cross-section; The main rib (21) has a long strip-shaped cross section and extends radially. The first end of the main rib (21) is fixedly connected to the wall of the heat-conducting pipe (1) and makes thermal contact. The two rib groups (22) are respectively arranged on both sides of the thickness direction of the main rib (21).

7. The heat transfer component of the adsorption bed according to claim 6, characterized in that, The rib assembly (22) includes: In cross-section, the branch-shaped rib (221) has a first end connected to the middle of the radial extension direction of the main rib (21), and a second end extending radially outward away from the main rib (21). In cross-section, the outer rib portion has a first end connected to the branch-shaped rib (221) and a second end extending away from the main rib (21); The inner rib portion (222) has a first end connected to the branch-shaped rib (221) in cross-section, and a second end extending toward the main rib (21).

8. The heat transfer component of the adsorption bed according to claim 7, characterized in that, The distance between the second end of the branch-type fin (221) and the central axis of the heat pipe (1) is less than the distance between the second end of the main fin (21) and the central axis of the heat pipe (1). The fin group (22) includes two outer fin portions and one inner fin portion (222). The first end of the inner rib portion (222) is connected to the second end of the branch-shaped rib (221), and extends circumferentially and has a radially outward convex arc structure. The second end of the inner rib portion (222) extends toward the second end of the main rib (21). Of the two outer rib portions, one is the first outer rib portion (223) and the other is the second outer rib portion (224). The first end of the first outer rib portion (223) is connected to the second end of the branch-shaped rib (221), and extends circumferentially, forming an arc-shaped structure that convexes radially outward, and the second end extends radially outward; The first end of the second outer rib portion (224) is connected to the middle of the branch-shaped rib (221) in the extension direction, and extends circumferentially and has a radially outward convex arc structure, and the second end of the second outer rib portion (224) bends toward the root.

9. The heat transfer component of the adsorption bed according to claim 8, characterized in that, The outer rib portions of the adjacent tree-shaped heat-conducting structures (2) are arranged close to each other so that the adsorbent can transition between each other.

10. The heat transfer component of the adsorption bed according to any one of claims 1-9, characterized in that, The surface of the tree-shaped heat-conducting structure (2) is covered with a first adsorbent layer (5), and the wall of the heat-conducting pipe (1) connected to the mass transfer cavity (3) is covered with a second adsorbent layer (6); the surface of the first adsorbent layer (5) and the surface of the second adsorbent layer (6) form a mass transfer cavity.

11. An adsorption bed, comprising a chamber, characterized in that, It also includes a heat transfer member as described in any one of claims 1-10, wherein the heat transfer member is disposed in the chamber.

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