Adsorbent bed and adsorption component thereof

Abstract

An adsorption component of an adsorbent bed, comprising a heat transfer member and an adsorbent portion, of which one side abuts against one side of the heat transfer member in a heat transfer direction, wherein the other side of the adsorbent portion is adapted to be oriented toward a mass transfer channel, the adsorbent portion comprises a first adsorbent layer and a second adsorbent layer which are sequentially arranged in the heat transfer direction of the heat transfer member, the first adsorbent layer is arranged between the second adsorbent layer and the heat transfer member, and the mass transfer channel is formed on the side of the second adsorbent layer distant from the first adsorbent layer; the adsorbent volume distribution density of the second adsorbent layer is less than the adsorbent volume distribution density of the first adsorbent layer. In the adsorption component of the adsorbent bed, because the adsorbent volume distribution density of the second adsorbent layer is less than the adsorbent volume distribution density of the first adsorbent layer, the mass transfer effect of the second adsorbent layer is improved, so that the overall desorption efficiency and adsorption efficiency are improved. Also disclosed in the present invention is an adsorbent bed comprising the adsorption component.

Description

Adsorption bed and its adsorption components

[0001] This application claims priority to Chinese Patent Application No. 202411975133.0, filed on December 30, 2024, entitled "Adsorption Bed and Adsorption Component Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of adsorption refrigeration technology, and more specifically, to an adsorption component for an adsorption bed, and to an adsorption bed including the above-mentioned adsorption component. Background Technology

[0003] Adsorption refrigeration systems mainly consist of an adsorption bed, an evaporator, and a condenser. The working principle of an adsorption refrigeration system is based on the adsorption capacity of solid adsorbents (such as zeolite, activated carbon, etc.) for certain refrigerant vapors (such as water, methanol, etc.). Heating the adsorbent causes the refrigerant in the adsorbent to desorb, and the desorbed vapor releases heat and condenses into liquid in the condenser. Cooling the adsorbent allows it to regain its adsorption capacity, and the adsorption causes the refrigerant liquid in the evaporator to evaporate. The evaporation in the evaporator absorbs heat, thus achieving refrigeration.

[0004] As the core component of an adsorption refrigeration system, the adsorption bed is the site where the adsorbent undergoes adsorption and desorption reactions, and its heat and mass transfer performance affects the overall performance of the adsorption refrigeration system.

[0005] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art: In general use, a heat exchange fluid flows through one side of the adsorbent in the adsorption bed, while a mass transfer channel is provided on the other side. This means that during use, the adsorbent in the adsorption bed needs to transfer heat with the heat exchange fluid while simultaneously transferring mass with the external mass transfer channel. Currently, the mass transfer efficiency of existing adsorption components needs improvement. Summary of the Invention

[0006] In view of this, the first objective of the present invention is to provide an adsorption component for an adsorption bed that can effectively solve the problem that the mass transfer effect of current adsorption components needs to be improved. The second objective of the present invention is to provide an adsorption bed including the above-mentioned adsorption component.

[0007] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0008] An adsorption component for an adsorption bed includes a heat transfer conductor and an adsorbent portion with one side abutting against the heat transfer conductor on one side of the heat transfer direction. The other side of the adsorbent portion faces a mass transfer channel. The adsorbent portion includes a first adsorbent layer and a second adsorbent layer sequentially arranged along the heat transfer direction of the heat transfer conductor. The first adsorbent layer is disposed between the second adsorbent layer and the heat transfer conductor. A mass transfer channel is formed on the side of the second adsorbent layer away from the first adsorbent layer. The adsorbent volume distribution density of the second adsorbent layer is less than that of the first adsorbent layer.

[0009] Because the adsorbent volume distribution density of the first adsorbent layer is greater than that of the second adsorbent layer, the overall mass transfer porosity of the second adsorbent layer is larger than that of the first adsorbent layer, thus improving the mass transfer efficiency of the second adsorbent layer. This, in turn, improves the mass transfer efficiency between the first adsorbent layer and the mass transfer channels, and also accommodates the increased adsorption capacity of the first adsorbent layer. Through the above analysis, it can be found that in the adsorption component of this adsorption bed, because the adsorbent volume distribution density of the second adsorbent layer is smaller than that of the first adsorbent layer, the overall mass transfer effect of the second adsorbent layer is improved, resulting in an increase in both overall desorption and adsorption efficiency. In conclusion, the adsorption component of this adsorption bed can effectively solve the problem of insufficient improvement in the mass transfer effect of current adsorption components.

[0010] In some technical solutions, the adsorbent particles in the first adsorbent layer are smaller than those in the second adsorbent layer, and the adsorbent particles in the first and second adsorbent layers are arranged in close contact.

[0011] In some technical solutions, the particle size of the adsorbent particles in the second adsorbent layer is between 1.2 and 2.5 times that of the adsorbent particles in the first adsorbent layer.

[0012] In some technical solutions, the diameter of the adsorbent particles in the first adsorbent layer is 0.45 to 0.60 mm; the diameter of the adsorbent particles in the second adsorbent layer is 0.8 to 1.0 mm.

[0013] In some technical solutions, the first adsorbent layer is bonded to the heat transfer conductor by an adhesive.

[0014] In some technical solutions, the adsorbent particles in both the first adsorbent layer and the second adsorbent layer are spherical particles.

[0015] In some technical solutions, the adsorbent particles in the second adsorbent layer are spherical particles with uneven surfaces.

[0016] In some technical solutions, the heat transfer conductor is a pipe structure with a cavity for the flow of heat exchange fluid, and the heat transfer direction of the heat transfer conductor is a transverse direction perpendicular to the flow direction of the heat exchange fluid.

[0017] In some technical solutions, the tube structure is a round tube or a flat tube.

[0018] In some technical solutions, the heat transfer conductor is a heat-conducting fin, and the adsorbent portion is provided on both sides of the heat-conducting fin in the thickness direction, and the heat transfer direction of the heat-conducting fin is the thickness direction.

[0019] In some technical solutions, the thickness of the first adsorbent layer in the heat transfer direction is less than the thickness of the second adsorbent layer in the heat transfer direction.

[0020] The heat transfer conductor includes a tube structure and fins, wherein the opposite sides of adjacent fins are combined with the outer wall of the tube structure located between them to form a groove structure; at least one first adsorbent layer extends from one side of one of the fins onto the outer wall of the tube structure and extends onto the corresponding side of another adjacent fin to form a concave structure, and the second adsorbent layer fills the concave structure.

[0021] To achieve the second objective mentioned above, the present invention also provides an adsorption bed comprising any of the aforementioned adsorption components. Since the aforementioned adsorption components possess the aforementioned technical effects, the adsorption bed having these adsorption components should also possess corresponding technical effects. Attached Figure Description

[0022] 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.

[0023] Figure 1 is a schematic cross-sectional view of the adsorption component provided in an embodiment of the present invention;

[0024] Figure 2 is a cross-sectional structural diagram of another adsorption component provided in an embodiment of the present invention;

[0025] Figure 3 is a partial cross-sectional structural diagram of another adsorption component provided in an embodiment of the present invention.

[0026] The following labels are used in the attached diagram: 1. Heat transfer conductor; 2. Adsorbent section; 3. Heat exchange fluid; 4. Mass transfer channel; 21. Adsorbent particles; 22. Second adsorbent layer; 23. First adsorbent layer; 11. Pipe structure; 12. Fins. Detailed Implementation

[0027] This invention discloses an adsorption component for an adsorption bed, which can effectively solve the problem that the mass transfer effect of current adsorption components needs to be improved.

[0028] 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.

[0029] Please refer to Figures 1-3. Figure 1 is a cross-sectional structural schematic diagram of the adsorption component provided in an embodiment of the present invention; Figure 2 is a cross-sectional structural schematic diagram of another adsorption component provided in an embodiment of the present invention; Figure 3 is a partial cross-sectional structural schematic diagram of another adsorption component provided in an embodiment of the present invention.

[0030] In some embodiments, an adsorption component for an adsorption bed is provided, mainly comprising a heat transfer conductor 1 and an adsorbent section 2. The adsorption bed is primarily used in adsorption refrigeration systems.

[0031] The heat transfer conductor 1 refers to a structural component capable of heat transfer. There are two main specific embodiments: the first is a pipe through which the heat exchange fluid 3 flows; the second is a heat-conducting entity, such as heat-conducting fins. The heat transfer direction of the heat transfer conductor 1 is generally determined by its arrangement. Typically, the heat transfer conductor 1 and the adsorbent section 2 are in thermal contact, and the external heat exchange source (heat source or cold source) also needs to be in thermal contact with the heat transfer conductor 1. In this case, the heat transfer conductor 1 acts as an intermediate heat transfer component, conducting heat between the external heat exchange source and the adsorbent section 2. The heat transfer path is clear, and therefore the corresponding heat transfer direction is also clear. Whether the external heat exchange source transfers heat to the adsorbent section 2 or vice versa depends on the temperature difference between the two. During the desorption stage, the external heat exchange source needs to transfer heat to the adsorbent section 2, while during the adsorption stage, the adsorbent section 2 needs to transfer heat to the external heat exchange source.

[0032] One side of the adsorbent section 2 is attached to the heat transfer direction side of the heat transfer conductor 1, while the other side of the heat transfer direction of the heat transfer conductor 1 is used to transfer heat with an external heat exchange source. It should be noted that "one side" and "the other side" can refer to two sides in a certain spatial direction, such as in a heat exchange tube; however, they can also refer to two sides that are not in a certain spatial direction, such as in a fin, where one side is the outer surface and the other side is the root structure for heat transfer to the outside. Therefore, "one side" and "the other side" in the heat transfer direction are mainly defined by the heat transfer path, with one end of the heat transfer path in conductive contact with the external heat source and the other end in conductive contact with the adsorbent section 2. In the first embodiment described above, the adsorbent section 2 is an adsorbent layer wrapped around the outer wall of the tube; in the second embodiment described above, the adsorbent section 2 is an adsorbent layer covering both sides in the thickness direction of the fin.

[0033] The second adsorbent layer forms a mass transfer channel on the side away from the first adsorbent layer. For example, the other side of the adsorbent section 2 can directly face the mass transfer channel 4, and mass transfer pores are formed inside the adsorbent section 2. During the desorption phase, the heat transfer conductor 1 transfers heat to the adsorbent section 2, and then the adsorbent inside the adsorbent section 2 desorbs the gaseous adsorbent working substance, which first enters the adsorption pores and then enters the mass transfer channel 4 from the adsorption pores. During the adsorption phase, the gaseous adsorbent working substance in the mass transfer channel 4 enters the mass transfer pores and is then adsorbed by the adsorbent in the mass transfer pores, releasing heat. This heat is transferred to the heat transfer conductor 1 and carried away by the heat transfer conductor 1. The adsorbent directly facing the mass transfer channel 4 can directly desorb the gaseous adsorbent working substance into the mass transfer channel 4 or directly adsorb the gaseous adsorbent working substance from the mass transfer channel 4.

[0034] The adsorbent section 2 includes a first adsorbent layer 23 and a second adsorbent layer 22 arranged sequentially along the heat transfer direction of the heat transfer conductor 1. The first adsorbent layer 23 is disposed between the second adsorbent layer 22 and the heat transfer conductor 1. This means that the second adsorbent layer 22 needs to transfer heat to the heat transfer conductor 1 through the first adsorbent layer 23, or at least part of the heat transfer between the second adsorbent layer 22 and the heat transfer conductor 1 needs to be done through the first adsorbent layer 23. Similarly, the gaseous adsorbent working fluid that needs to be transferred between the first adsorbent layer 23 and the mass transfer channel 4 is transferred through the mass transfer pores of the second adsorbent layer 22.

[0035] This is because, in the heat transfer direction, the adsorbent section 2 cannot achieve an absolutely thin-layer structure. Therefore, there will always be adsorbent portions that cannot contact the heat transfer conductor 1. These adsorbent portions need to undergo intermediate heat transfer through the adsorbent portions closer to the heat transfer conductor 1. The same problem exists for mass transfer. To better illustrate the core difference of this application, at least a first adsorbent layer 23 and a second adsorbent layer 22 are defined in the heat transfer direction (mass transfer direction). Of course, the adsorbent section 2 may only include the first adsorbent layer 23 and the second adsorbent layer 22, or it may also include a third adsorbent layer, a fourth adsorbent layer, etc., in addition to these; it is not limited here.

[0036] In some embodiments, the adsorbent volume distribution density of the second adsorbent layer 22 is less than that of the first adsorbent layer 23. Adsorbent volume distribution density refers to the volume occupied by the adsorbent per unit volume. As described above, the adsorbent layer needs to contain adsorbent, but it is not completely filled with adsorbent; some cavities are also required, existing as pores to serve as mass transfer pores. During desorption, the desorbed gaseous working fluid first enters these mass transfer pores and then moves away from the corresponding heat transfer conductor to flow into the corresponding mass transfer channel 4. During adsorption, the gaseous working fluid in the mass transfer channel 4 enters the mass transfer pores and is adsorbed by the adsorbent surrounding the pores. Therefore, the adsorbent layer density affects the volume ratio of the mass transfer pores, thus affecting the mass transfer efficiency.

[0037] Similarly, heat transfer between the first adsorbent layer 23 and the heat transfer conductor 1 and the second adsorbent layer 22 generally occurs through the thermal conductivity of the adsorbent itself. However, gaseous molecules in the mass transfer pores have very low heat transfer efficiency. Therefore, the density of the adsorbent layer also affects the heat transfer effect; a higher adsorbent layer density results in a larger heat transfer cross-sectional area and thus a better heat transfer effect. The improved heat transfer effect of a higher adsorbent layer density is mainly reflected in two aspects: firstly, the heat transfer cross-sectional area increases; secondly, the contact area for the adsorbent particles increases. Of course, ensuring the heat transfer effect also depends on comparing the thermal conductivity of the first adsorbent layer 23 and the second adsorbent layer 22. When comparing the heat transfer effects, it can be assumed that the thermal conductivity of the adsorbent in the first adsorbent layer 23 and the second adsorbent layer 22 are the same, such as if they are made of the same material.

[0038] In use, because the adsorbent volume distribution density of the first adsorbent layer 23 is greater than that of the second adsorbent layer 22: on the one hand, the heat transfer area of ​​the first adsorbent layer 23 is larger than that of the second adsorbent layer 22, thus increasing the heat transfer area of ​​the first adsorbent layer 23 and improving the heat transfer effect between the second adsorbent layer 22 and the heat transfer conductor; on the other hand, the overall mass transfer porosity of the second adsorbent layer 22 is larger than that of the first adsorbent layer 23, thus increasing the mass transfer efficiency of the second adsorbent layer 22 and improving the mass transfer efficiency between the first adsorbent layer 23 and the mass transfer channel 4, while also accommodating the increased adsorption capacity of the first adsorbent layer 23. Through the above analysis, it can be found that in the adsorption components of this adsorption bed, because the adsorbent volume distribution density of the first adsorbent layer 23 is greater than that of the second adsorbent layer 22, the overall mass transfer and heat transfer effects are improved, resulting in an overall increase in efficiency. In summary, the adsorption components of this adsorption bed can effectively solve the problem that the mass and heat transfer performance of current adsorption components needs to be improved.

[0039] In some embodiments, as shown in FIG3, the particle size of the adsorbent particles 21 in the first adsorbent layer 23 can be made equal to the particle size of the adsorbent particles 21 in the second adsorbent layer 22. In this case, the spacing between adjacent adsorbent particles 21 in the second adsorbent layer 22 can be greater than the spacing between adjacent adsorbent particles 21 in the first adsorbent layer 23, so that the adsorbent particles 21 in the first adsorbent layer 23 are more densely distributed than those in the second adsorbent layer 22, thereby satisfying that the adsorbent volume distribution density of the first adsorbent layer 23 is greater than that of the second adsorbent layer 22. This does not change the adsorption efficiency and desorption efficiency of the adsorbent particles in the second adsorbent layer 22.

[0040] In some embodiments, the particle size of the adsorbent particles 21 in the first adsorbent layer 23 can be larger than that in the second adsorbent layer 22. In this case, the spacing between adjacent adsorbent particles in the second adsorbent layer 22 can be larger than that between adjacent adsorbent particles in the first adsorbent layer 23, thus ensuring that the adsorbent volume distribution density of the first adsorbent layer 23 is greater than that of the second adsorbent layer 22. Since the heating temperature of the second adsorbent layer 22 is lower than that of the first adsorbent layer 23 during the desorption phase, and the adsorbent particles 21 in the second adsorbent layer 22 are smaller, the effect of temperature drop on desorption efficiency can be compensated. Similarly, during the adsorption phase, the cooling temperature of the second adsorbent layer 22 is higher than that of the first adsorbent layer 23, and the adsorbent particles 21 in the second adsorbent layer 22 are smaller, thus compensating for the effect of temperature rise on adsorption efficiency.

[0041] In some embodiments, for ease of arrangement, whether by spraying or spreading, the adsorbent particles 21 of the first adsorbent layer 23 and the adsorbent particles 21 of the second adsorbent layer 22 are arranged in close contact. Here, "closely contacted" means that they support each other, especially in the direction of extension.

[0042] At this point, the particle size of the adsorbent particles 21 in the first adsorbent layer 23 can be smaller than that in the second adsorbent layer 22. The larger adsorbent particles 21 in the second adsorbent layer 22 will create larger gaps between them, thus improving mass transfer. Conversely, the smaller particle size of the adsorbent particles in the first adsorbent layer 23 will result in a denser structure, thus improving heat transfer.

[0043] Within the same volume space, the smaller and denser the inner particles (adsorbent particles 21 in the first adsorbent layer 23), the smaller the gaps between particles, which helps to reduce the contact thermal resistance for heat transfer between particles; the larger the outer particles (adsorbent particles 21 in the second adsorbent layer 22), the larger the gaps between particles, which helps with mass transfer and transport. A relatively optimal balance of heat and mass transfer can be achieved by controlling the two adsorption layers.

[0044] Specifically, the particle size of the second adsorbent layer 22 can be between 1.2 and 2.5 times that of the first adsorbent layer 23. If the particle size is too small, the heat transfer effect will be insignificant; if the particle size is too large, the heat transfer effect of the particles in the second adsorbent layer 22 itself will be poor.

[0045] In some embodiments, the diameter of the adsorbent particles 21 of the first adsorbent layer 23 may be between 0.45 and 0.60 mm, including 0.45 mm and 0.60 mm; and the diameter of the adsorbent particles 21 of the second adsorbent layer 22 may be between 0.8 and 1.0 mm, including 0.8 mm and 1.0 mm.

[0046] The shapes of the adsorbent particles 21 in the first adsorbent layer 23 and the second adsorbent layer 22 can be configured as needed, and can be blocky, elliptical, or spherical. Preferably, both the adsorbent particles 21 in the first adsorbent layer 23 and the adsorbent particles 21 in the second adsorbent layer 22 are spherical particles.

[0047] When the adsorbent particles 21 in the second adsorbent layer 22 are relatively large, in order to ensure that the adsorption and desorption efficiency of a single adsorbent particle 21 is improved, it is preferable that the adsorbent particles 21 in the second adsorbent layer 22 are spherical particles with uneven surfaces.

[0048] In some embodiments, since the mass transfer requirement of the first adsorbent layer 23 is relatively low, and the heat transfer effect is more important, the first adsorbent layer 23 can be bonded to the heat transfer conductor 1 with an adhesive to improve the thermal conductivity between them and the heat transfer conductor 1, thereby improving the heat transfer effect.

[0049] Correspondingly, the adsorbent particles 21 can be mixed with the binder in a certain ratio (5:3) in the second adsorbent layer 22 and coated on the first adsorbent layer 23.

[0050] In some embodiments, as shown in Figure 1, the heat transfer conductor 1 can be a tube structure, with the tube cavity used for the flow of the heat exchange fluid 3. In the desorption state, the heat exchange fluid 3 flows, and its temperature is generally relatively high, such as between 55°C and 65°C; while in the adsorption state, the temperature of the heat exchange fluid 3 is generally relatively low, such as between 28°C and 35°C. In this case, the heat transfer direction of the heat transfer conductor 1 is a transverse direction perpendicular to the flow direction of the heat exchange fluid 3. For a circular tube, the heat transfer direction is the radial direction.

[0051] At this time, the first adsorbent layer 23 can be a first adsorbent particle layer attached to the outer wall of the pipe structure, and the second adsorbent layer 22 can be a second adsorbent particle layer attached to the outer wall of the pipe structure. Of course, when the pipe structure is placed horizontally, the first adsorbent layer 23 can be a first adsorbent particle layer laid flat on the outer wall of the pipe structure, and the second adsorbent layer 22 can be a second adsorbent particle layer laid flat on the outer wall of the pipe structure.

[0052] In some embodiments, the tube structure can be a circular tube or a flat tube, and the outer surface can be flat, a flat arc surface, or a flat planar surface. The outer surface may also have some minor unevenness while ensuring heat transfer efficiency. A circular tube structure can be used to ensure a larger heat exchange area.

[0053] In some embodiments, the heat transfer conductor 1 is a heat-conducting fin, and adsorbent portions 2 are provided on both sides of the heat-conducting fin in the thickness direction. If the heat transfer direction is the thickness direction of the heat-conducting fin, then heat is transferred from the center to both sides in the thickness direction. In this case, along the thickness direction of the heat-conducting fin, a first adsorbent layer 23, a second adsorbent layer 22, a heat-conducting fin, another first adsorbent layer 23, and another second adsorbent layer 22 can be arranged sequentially to form a multilayer structure. Taking desorption as an example, heat enters the heat-conducting fin from the root, and then is transferred to the first adsorbent layer 23 along the thickness direction at the heat-conducting fin. Due to thermal resistance and the endothermic evaporation of the adsorbent, the first adsorbent layer 23 still transfers excess heat to the second adsorbent layer 22, causing the adsorbent in the second adsorbent layer 22 to evaporate and absorb heat, thereby achieving heat transfer. Taking adsorption as an example, the heat of the second adsorbent layer 22 needs to be transferred to the first adsorbent layer 23. At this time, the first adsorbent layer 23 needs to present a lower temperature. At the same time, liquid adsorbent working fluid condenses at the first adsorbent layer 23, which also needs to release heat. At this time, the heat transferred from the first adsorbent layer 23 is collected together to be transferred to the heat-conducting fins.

[0054] In some embodiments, as shown in Figure 2, the heat transfer conductor 1 can simultaneously include a tube structure 11 and fins 12, wherein the fins 12 are vertically disposed on the tube structure 11. In this case, the first adsorbent layer 23 can be continuously attached to the outer surface of the tube structure 11 and the fins 12. When multiple fins 12 are provided, a groove structure is formed between adjacent fins 12. The first adsorbent layer 23 can extend from one side of one fin 12 to the outer wall of the tube structure 12, and then extend to the corresponding side of another fin 12 to form a concave structure. In this case, the second adsorbent layer 22 can fill this concave structure.

[0055] In some embodiments, the thickness of the first adsorbent layer 23 can be less than the thickness of the second adsorbent layer 22. Taking desorption as an example, since the first adsorbent layer 23 mainly serves a heat transfer function during desorption, the temperature difference cannot be too large. Similarly, the mass transfer effect of the first adsorbent layer 23 is relatively poor, so its thickness should be controlled. The temperature difference of the second adsorbent layer 22 is affected by both the gaseous adsorbent and heat transfer, so its temperature drop trend is weaker than that of the first adsorbent layer 23. Therefore, its thickness can be appropriately higher. The thickness of the second adsorbent layer 22 can be between 1.2 and 2.5 times the thickness of the first adsorbent layer 23.

[0056] Based on the adsorption components provided in the above embodiments, the present invention also provides an adsorption bed, which includes any one of the adsorption components in the above embodiments. Since this adsorption bed uses the adsorption components in the above embodiments, the beneficial effects of this adsorption bed are explained in the above embodiments.

[0057] 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.

[0058] 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. An adsorption component for an adsorption bed, comprising a heat transfer conductor (1) and an adsorbent portion (2) with one side abutting against the heat transfer conductor (1) on one side in the heat transfer direction, the other side of the adsorbent portion (2) facing a mass transfer channel, characterized in that, The adsorbent section (2) includes a first adsorbent layer (23) and a second adsorbent layer (22) arranged sequentially along the heat transfer direction of the heat transfer conductor (1). The first adsorbent layer (23) is disposed between the second adsorbent layer (22) and the heat transfer conductor (1). A mass transfer channel (4) is formed on the side of the second adsorbent layer (22) away from the first adsorbent layer (23). The adsorbent volume distribution density of the second adsorbent layer (22) is less than that of the adsorbent volume distribution density of the first adsorbent layer (23).

2. The adsorption component according to claim 1, characterized in that, The adsorbent particles in the first adsorbent layer (23) are smaller than the adsorbent particles in the second adsorbent layer (22). The adsorbent particles in the first adsorbent layer (23) are closely attached to each other, and the adsorbent particles in the second adsorbent layer (22) are closely attached to each other.

3. The adsorption component according to claim 2, characterized in that, The particle size of the adsorbent particles (21) in the second adsorbent layer (22) is between 1.2 and 2.5 times that of the adsorbent particles (21) in the first adsorbent layer (23).

4. The adsorption component according to claim 2, characterized in that, The diameter of the adsorbent particles in the first adsorbent layer (23) is 0.45 to 0.60 mm; the diameter of the adsorbent particles in the second adsorbent layer (22) is 0.8 to 1.0 mm.

5. The adsorption component according to claim 2, characterized in that, The first adsorbent layer (23) is bonded to the heat transfer conductor (1) by an adhesive.

6. The adsorption component according to claim 2, characterized in that, The adsorbent particles (21) of the first adsorbent layer (23) and the adsorbent particles (21) of the second adsorbent layer (22) are both spherical particles.

7. The adsorption component according to claim 6, characterized in that, The adsorbent particles (21) of the second adsorbent layer (22) are spherical particles with uneven surfaces.

8. The adsorption member according to any one of claims 1-7, characterized in that, At least one of the heat transfer conductors (1) is a pipe structure with a cavity for the flow of heat exchange fluid (3), and the heat transfer direction of the heat transfer conductor (1) is a transverse direction perpendicular to the flow direction of the heat exchange fluid (3).

9. The adsorption component according to claim 8, characterized in that, The tube structure is either a round tube or a flat tube.

10. The adsorption member according to any one of claims 1-7, characterized in that, At least one of the heat transfer conductors (1) is a heat-conducting fin, and the adsorbent portion (2) is provided on both sides of the thickness direction of the heat-conducting fin. The heat transfer direction of the heat-conducting fin is the thickness direction.

11. The adsorption component according to claim 1, characterized in that, The thickness of the first adsorbent layer (23) in the heat transfer direction is less than the thickness of the second adsorbent layer (22) in the heat transfer direction.

12. The adsorption member according to any one of claims 1-7, characterized in that, The heat transfer conductor (1) includes a tube structure (11) and fins (12), wherein the opposite sides of adjacent fins (12) are combined with the outer wall of the tube structure (11) located between them to form a groove structure; at least one first adsorbent layer (23) extends from one side of one fin (12) onto the outer wall of the tube structure (11) and extends onto the corresponding side of another adjacent fin (12) to form a concave structure, wherein the second adsorbent layer (22) fills the concave structure.

13. An adsorption bed, characterized in that, Includes the adsorption component as described in any one of claims 1-11.

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