Adsorption type thermoacoustic refrigeration unit and adsorption type thermoacoustic refrigerator

Abstract

The utility model relates to the technical field of energy conversion, and provides an adsorption type thermoacoustic refrigeration unit and an adsorption type thermoacoustic refrigerator, and the refrigeration unit comprises a cooler, a heat regenerator and a hot end heat exchanger which are connected in sequence; the heat regenerator is provided with a plurality of adsorbent flow channels, and the adsorbent flow channels are provided with adsorbate gas. According to the adsorption type thermo-acoustic refrigeration unit and the adsorption type thermo-acoustic refrigerator provided by the embodiment of the utility model, the heat regenerator is provided with the plurality of adsorbent flow channels, and the adsorbent flow channels in the heat regenerator are used for adsorbing and analyzing adsorbate gas so as to strengthen gas-solid heat transfer, so that thermo-acoustic refrigeration cycle is strengthened, and the refrigeration efficiency and the energy density are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy conversion, in particular to an adsorption thermoacoustic refrigeration unit and an adsorption thermoacoustic refrigerator. Background Art

[0002] A thermoacoustic refrigerator is a new type of refrigeration device. Its structure is simple and usually only consists of a heat exchanger and a pipe section. There are no mechanical moving parts in the system except for the sound source. Its prominent advantages are high reliability and environmental friendliness, so the scientific community and the industrial community have high hopes for it.

[0003] However, the refrigeration efficiency and energy density of existing thermoacoustic refrigerators are relatively low, resulting in a certain gap between the efficiency and energy density of existing thermoacoustic refrigerators and mature refrigeration technologies, so they have not been widely used. Summary of the Utility Model

[0004] The utility model provides an adsorption thermoacoustic refrigeration unit and an adsorption thermoacoustic refrigerator to solve the defect that the refrigeration efficiency and energy density of the thermoacoustic refrigerator in the existing technology are relatively low.

[0005] The utility model provides an adsorption thermoacoustic refrigeration unit, including a cooler, a regenerator and a hot-end heat exchanger connected in sequence;

[0006] The regenerator is configured with a plurality of adsorbent channels, and the adsorbent channels are filled with adsorbate gas.

[0007] According to an adsorption thermoacoustic refrigeration unit provided by an embodiment of the utility model, the regenerator is configured with a regenerator channel, the inner wall of the regenerator channel has an adsorbent, and the regenerator channel with the adsorbent forms the adsorbent channel.

[0008] According to an adsorption thermoacoustic refrigeration unit provided by an embodiment of the utility model, the regenerator is made of an adsorbent, the regenerator is configured with a regenerator channel, and the regenerator channel forms the adsorbent channel.

[0009] According to an adsorption thermoacoustic refrigeration unit provided by an embodiment of the utility model, the adsorbent is one of activated carbon, siliceous rock, and metal hydride.

[0010] According to an adsorption thermoacoustic refrigeration unit provided by an embodiment of the utility model, the adsorbate gas is one of carbon dioxide, ammonia, and hydrogen.

[0011] According to an adsorption thermoacoustic refrigeration unit provided by an embodiment of the utility model, the regenerator is made of stacked multi-layer wire meshes or porous foams.

[0012] An adsorption thermoacoustic refrigeration unit provided by an embodiment of the present invention has a plurality of adsorbent channels arranged in parallel and at equal intervals.

[0013] The present invention also provides an adsorption thermoacoustic refrigerator, which includes a resonance tube, a sound source, and the adsorption thermoacoustic refrigeration unit described in any one of the above. The adsorption thermoacoustic refrigeration unit and the sound source are arranged at intervals in the resonance tube.

[0014] In the adsorption thermoacoustic refrigeration unit and the adsorption thermoacoustic refrigerator provided by the embodiments of the present invention, a plurality of adsorbent channels are constructed in the regenerator, and the adsorbent channels in the regenerator are used to adsorb and desorb the adsorbate gas to strengthen the gas-solid heat transfer, thereby strengthening the thermoacoustic refrigeration cycle, and further increasing the refrigeration efficiency and energy density. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of an adsorption thermoacoustic refrigeration unit provided by an embodiment of the present invention;

[0017] Figure 2 is a schematic structural diagram of an adsorption thermoacoustic refrigerator provided by an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of the outflow of the refrigeration method of an adsorption thermoacoustic refrigerator provided by an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of the thermoacoustic refrigeration cycle principle of an adsorption thermoacoustic refrigerator under a standing wave sound field provided by an embodiment of the present invention;

[0020] Figure 5 is a schematic diagram of the thermoacoustic refrigeration cycle principle of an adsorption thermoacoustic refrigerator under a traveling wave sound field provided by an embodiment of the present invention.

[0021] REFERENCE SIGNS:

[0022] 1. Adsorption thermoacoustic refrigeration unit; 11. Cooler; 111. Adsorbent layer; 12. Regenerator; 13. Hot end heat exchanger;

[0023] 2. Resonance tube;

[0024] 3. Sound source. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0028] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0030] An embodiment of the first aspect of the present utility model provides an adsorption thermoacoustic refrigeration unit. Figure 1 The structural schematic diagram of the adsorption thermoacoustic refrigeration unit provided by the embodiment of the present utility model is exemplified, as Figure 1 shown, the adsorption thermoacoustic refrigeration unit 1 includes a cooler 11, a regenerator 12, and a hot-end heat exchanger 13 connected in sequence. The regenerator 12 is configured with a plurality of adsorbent channels, and the adsorbent channels have adsorbate gas.

[0031] It can be understood that the regenerator 12 is configured with adsorbent channels, and there is adsorbate gas in the adsorbent channels of the regenerator 12, and the adsorption effect of the adsorbate gas and the adsorbent channels is utilized.

[0032] It can be understood that when the adsorption thermoacoustic refrigeration unit 1 works, the adsorbate gas in the adsorbent channels of the regenerator 12 will adsorb and desorb with the adsorbent channels under the action of the sound field. The release and absorption of the adsorption heat brought about can effectively strengthen the gas-solid heat transfer, thereby strengthening the thermoacoustic refrigeration cycle.

[0033] For the adsorption thermoacoustic refrigeration unit provided by the embodiment of the present utility model, a plurality of adsorbent channels are configured in the regenerator 12, and the adsorbent channels in the regenerator 12 are used to adsorb and desorb the adsorbate gas to strengthen the gas-solid heat transfer, thereby strengthening the thermoacoustic refrigeration cycle, and further increasing the refrigeration efficiency and energy density, so it can be widely used.

[0034] It should be noted that in the related art, measures for improving the sound field are adopted to enhance the performance of a thermoacoustic refrigerator. However, the improvement effect is poor, and the structure involved in improving the sound field is relatively complex, resulting in complex operation and high costs. In addition, in the related art, in order to improve the refrigeration efficiency and energy density, the charging pressure can be increased, the overall structure of the machine can be changed, and the regenerator can be placed in a reasonable position. However, increasing the charging pressure requires high material requirements and is relatively dangerous. Changing the overall structure of the machine is complex and costly. The adsorption thermoacoustic refrigeration unit provided by the embodiment of the present invention can increase the refrigeration efficiency and energy density only by designing the adsorbent flow channel for the regenerator 12, thus having simple operation and low cost. According to the embodiment of the present invention, the regenerator 12 has a hot end and a cold end. The cooler 11 is connected to the cold end of the regenerator 12, and the hot end heat exchanger 13 is connected to the hot end of the regenerator 12. When the adsorption thermoacoustic refrigeration unit of this embodiment operates, under the action of the thermoacoustic effect, heat is pumped from the cold end of the regenerator 12 to the hot end, so a refrigeration effect is generated at the cooler 11.

[0035] In an embodiment of the present invention, the regenerator 12 is configured with a regenerator channel, and the inner wall of the regenerator channel has an adsorbent. The regenerator channel with the adsorbent forms an adsorbent flow channel.

[0036] It can be understood that the regenerator 12 has a plurality of regenerator channels. By arranging the adsorbent on the wall surface of the regenerator channel, the regenerator channel with the adsorbent is used as the adsorbent flow channel.

[0037] For example, the regenerator 12 is a porous structure. A plurality of through holes are processed on the regenerator 12. The plurality of through holes serve as a plurality of regenerator channels. Then, the adsorbent is arranged on the inner wall of each regenerator channel, so as to form an adsorbent layer 111 on the inner wall of the regenerator channel. The thickness of the adsorbent layer 111 can be about 1 / 10 of the size of the regenerator channel. For example, if the cross-section of the regenerator channel is circular, the thickness of the adsorbent layer 111 is about 1 / 10 of the diameter of the regenerator channel; if the cross-section of the regenerator channel is square, the thickness of the adsorbent layer 111 is about 1 / 10 of the width of the regenerator channel.

[0038] It should be noted that arranging the adsorbent in the regenerator channel of the regenerator 12 is time-consuming and laborious, and when the number of regenerator channels of the regenerator 12 is large, it further increases the manufacturing difficulty of the regenerator 12. Therefore, this embodiment provides another structure of the regenerator, specifically: the material of the regenerator 12 is an adsorbent, the regenerator 12 is configured with a regenerator channel, and the regenerator channel forms an adsorbent flow channel.

[0039] It can be understood that the regenerator 12 is prepared from an adsorbent material. Subsequently, a plurality of through holes are machined on the regenerator 12. Since the regenerator 12 is made of an adsorbent material, the inner walls of the through holes are the adsorbent, so that the regenerator channels directly serve as adsorbent channels.

[0040] It should be noted that by selecting an adsorbent material for the regenerator 12, only by machining a plurality of through holes on the regenerator 12, the regenerator 12 with a plurality of adsorbent channels can be formed, eliminating the process of arranging the adsorbent in the regenerator channels, thus simplifying the preparation process of the regenerator 12.

[0041] It should be noted that by selecting an adsorbent material for the regenerator 12, it is also possible to form a plurality of through holes on the regenerator 12 while machining the regenerator 12 with an adsorbent material, so that the regenerator 12 with adsorbent channels is obtained by directly machining with an adsorbent material once.

[0042] Furthermore, the plurality of adsorbent channels of the regenerator 12 are arranged in parallel. By way of example, the regenerator 12 is provided with a plurality of through holes arranged at intervals, so that the regenerator 12 forms a plurality of adsorbent channels arranged in parallel. Preferably, the plurality of adsorbent channels are arranged at equal intervals to achieve the uniformity of gas-solid heat transfer.

[0043] In an embodiment of the present invention, the regenerator 12 may also be a porous structure formed by porous foam, so the regenerator 12 can be made of porous foam. In other embodiments, the regenerator 12 may also be a porous structure formed by wire mesh, so the regenerator 12 can be made of a stack of multiple layers of wire mesh.

[0044] According to the embodiments of the present invention, the adsorbate gas and the adsorbent can use a working fluid pair with a significant adsorption effect to achieve refrigeration. In this embodiment, the adsorbent is one of activated carbon, siliceous rock, and metal hydride, and the adsorbate gas is one of carbon dioxide, ammonia, and hydrogen.

[0045] By way of example, the adsorbate gas and the adsorbent can use an ammonia-activated carbon working fluid pair, that is, the adsorbate gas uses ammonia and the adsorbent uses activated carbon. Of course, the adsorbate gas and the adsorbent can also use working fluid pairs with adsorption refrigeration such as carbon dioxide-activated carbon working fluid pair, carbon dioxide-siliceous rock working fluid pair, and hydrogen-metal hydride working fluid pair.

[0046] In an alternative embodiment of the present invention, the adsorbate gas and the adsorbent use a carbon dioxide-activated carbon working fluid pair. Gaseous carbon dioxide serves as both the adsorbate and the working fluid for thermoacoustic oscillation, and activated carbon serves as the adsorbent, which can be the material of the wall surface of the adsorbent channel or the material of the entire regenerator 12.

[0047] It can be understood that when the thermoacoustic system is operating, the gaseous carbon dioxide in the regenerator 12 will undergo periodic adsorption and desorption with the activated carbon on the surface of the adsorbent flow channel under the action of pressure and temperature fluctuations. The release and absorption of the adsorption heat brought about thereby can effectively strengthen the gas-solid heat transfer, improve the energy density of the thermoacoustic conversion, and further improve the performance of the thermoacoustic refrigerator.

[0048] An embodiment of the second aspect of the present invention provides an adsorption thermoacoustic refrigerator. Figure 2 The structural schematic diagram of the adsorption thermoacoustic refrigerator provided by the exemplary embodiment of the present invention is as follows. Figure 2 As shown, the adsorption thermoacoustic refrigerator includes a resonance tube 2, an adsorption thermoacoustic refrigeration unit 1, and at least one sound source 3. The adsorption thermoacoustic refrigeration unit 1 adopts the adsorption thermoacoustic refrigeration unit 1 provided in any of the above embodiments. The adsorption thermoacoustic refrigeration unit 1 and the sound source 3 are arranged at intervals in the resonance tube 2. Among them, the cooler 11 of the adsorption thermoacoustic refrigeration unit 1 is arranged adjacent to and at intervals from the sound source 3.

[0049] It can be understood that when the adsorption thermoacoustic refrigerator in this embodiment operates, under the drive of the sound source 3, acoustic oscillations occur in the resonance tube 2, and thus a thermoacoustic refrigeration cycle will occur in the adsorbent flow channel of the regenerator 12. That is, under the action of the thermoacoustic effect, heat is pumped from the cold end of the regenerator 12 to the hot end. The cooler 11 is connected to the cold end of the regenerator 12, and the hot end heat exchanger 13 is connected to the hot end of the regenerator 12. Therefore, a refrigeration effect is generated at the cooler 11. During the thermoacoustic refrigeration cycle, due to the fluctuations of pressure and temperature, the adsorbate gas will undergo periodic adsorption and desorption with the wall surface of the adsorbent flow channel.

[0050] According to the embodiment of the present invention, the thermoacoustic refrigerator can have various classifications due to different resonance tubes 2. Therefore, the adsorption thermoacoustic refrigeration unit 1 of the present invention can be applicable to various structural types of thermoacoustic refrigerators including standing waves, can also be applicable to various structural types of thermoacoustic refrigerators including traveling waves, and can also be applicable to various structural types of thermoacoustic refrigerators including standing waves and traveling waves.

[0051] Optionally, the thermoacoustic refrigeration cycle can be a standing wave type, a traveling wave type, or a combination of traveling waves and standing waves.

[0052] In this embodiment, as Figure 2 shown, the resonance tube 2 constitutes a standing wave sound field with a half wavelength. Figure 2 The adsorption thermoacoustic refrigerator shown is a standing wave type adsorption thermoacoustic refrigerator. Thus, the thermoacoustic refrigeration cycle is a standing wave type. The adsorption thermoacoustic refrigerator of the present invention includes, but is not limited to, a standing wave type adsorption thermoacoustic refrigerator, and can also be a traveling wave type adsorption thermoacoustic refrigerator or other thermoacoustic refrigerators.

[0053] The adsorption thermoacoustic refrigerator provided by the embodiment of the present utility model has a plurality of adsorbent flow channels constructed in the regenerator 12. By using the adsorption heat brought by the adsorption and desorption of the adsorbent flow channels in the regenerator 12 and the adsorbate gas, the energy conversion is strengthened, which is beneficial to improving the performance of the thermoacoustic refrigerator such as the refrigeration power density and refrigeration efficiency.

[0054] According to the embodiment of the present utility model, the adsorption thermoacoustic refrigerator uses the temperature gradient generated by the compression and expansion processes of the working medium gas to transfer heat.

[0055] It can be understood that during the compression stage of the working medium gas, the partial pressure of the adsorbate gas increases, forcing the adsorbate gas to adsorb onto the adsorbent flow channel (adsorption) and release heat.

[0056] During the expansion stage of the working medium gas, the partial pressure of the adsorbate gas is reduced, and the adsorbate gas is released from the adsorbent flow channel (desorption) and absorbs heat.

[0057] The adsorption and desorption processes of the adsorbate gas on the adsorbent flow channel of the regenerator 12 carry adsorption heat and transfer it between the working medium gas and the adsorbent flow channel of the regenerator 12. This process is accompanied by changes in the volume and density of the working medium gas, which enhances the thermoacoustic oscillation and strengthens the thermoacoustic effect, making the adsorption thermoacoustic refrigerator have higher efficiency and energy density.

[0058] It should be noted that the working medium gas can be the working medium for the thermoacoustic oscillation of the adsorption thermoacoustic refrigerator, or it can be a mixed gas of the adsorbate gas and other thermoacoustic oscillation gases, or it can all be the adsorbate gas.

[0059] Based on the adsorption thermoacoustic refrigerator provided by any of the above embodiments, the embodiment of the present utility model also proposes a refrigeration method for an adsorption thermoacoustic refrigerator, as Figure 3 shown. The method includes the following steps:

[0060] Step 100: Use the sound source 3 to input sound waves of a target frequency into the resonator tube 2, and the sound waves are used to construct a sound field in the resonator tube 2.

[0061] It can be understood that when the sound source 3 inputs sound waves of a target frequency (appropriate frequency) into the resonator tube 2, a sound field is constructed in the resonator tube 2.

[0062] Among them, the sound field includes a standing wave sound field and / or a traveling wave sound field. Then the sound field can be of the standing wave type, or of the traveling wave type, or a combination of traveling waves and standing waves.

[0063] Step 200: Under the action of the sound field, use the adsorbent flow channels in the regenerator 12 to adsorb and desorb the adsorbate gas.

[0064] It can be understood that under the action of the sound field, a thermoacoustic refrigeration cycle occurs in the regenerator 12, pumping heat from the cold end of the regenerator 12 to the hot end of the regenerator 12 to produce a refrigeration effect. Therefore, during stable operation, the cooler 11 connected to the cold end of the regenerator 12 absorbs heat from the cold source, while the hot-end heat exchanger 13 connected to the hot end of the regenerator 12 releases heat to the environment.

[0065] It should be noted that compared with traditional thermoacoustic refrigerators, due to the pressure and temperature fluctuations under the action of the sound field, the adsorbate gas in the adsorbent flow channel of the regenerator 12 undergoes periodic adsorption and desorption with the adsorbent flow channel to strengthen gas-solid heat transfer, thereby strengthening the thermoacoustic refrigeration cycle and increasing the refrigeration capacity and refrigeration efficiency (COP).

[0066] According to an embodiment of the present invention, the adsorption thermoacoustic refrigerator utilizes the standing wave component in the sound wave, so the adsorption thermoacoustic refrigerator is a standing wave type adsorption thermoacoustic refrigerator, as Figure 4 shown, the corresponding thermoacoustic refrigeration cycle includes the following four processes: S11, adiabatic expansion; S12, isobaric heat absorption accompanied by desorption; S13, adiabatic compression; S14, isobaric heat release accompanied by adsorption. Here it should be noted that Figure 4 where Tc and Th are respectively the cold-end temperature and the hot-end temperature of the regenerator when the thermoacoustic refrigeration cycle reaches equilibrium.

[0067] The adsorption thermoacoustic refrigerator utilizes the traveling wave component in the sound wave, so the adsorption thermoacoustic refrigerator is a traveling wave type adsorption thermoacoustic refrigerator, as Figure 5 shown, the corresponding thermoacoustic refrigeration cycle includes the following four processes: S21, isobaric heat release accompanied by desorption; S22, isothermal expansion heat absorption accompanied by desorption; S23, isobaric heat absorption accompanied by adsorption; S24, isothermal compression heat release accompanied by adsorption. Here it should be noted that Figure 5 where Tc and Th are respectively the cold-end temperature and the hot-end temperature of the regenerator when the thermoacoustic refrigeration cycle reaches equilibrium.

[0068] It should be noted that compared with the traditional standing wave and traveling wave refrigeration cycles, the thermoacoustic refrigeration cycle processes of the above-mentioned standing wave type adsorption thermoacoustic refrigerator and traveling wave type adsorption thermoacoustic refrigerator add adsorption and desorption processes, thereby strengthening gas-solid heat transfer, and further strengthening the thermoacoustic refrigeration cycle to achieve an increase in refrigeration efficiency and energy density.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adsorption thermoacoustic refrigeration unit, characterized in that: It comprises a cooler (11), a heat regenerator (12) and a hot end heat exchanger (13) which are connected in sequence; The regenerator (12) is configured with a plurality of adsorbent flow channels, wherein the adsorbent flow channels contain adsorbate gas.

2. The adsorption thermoacoustic refrigeration unit according to claim 1, characterized in that: The regenerator (12) is configured with a regenerator channel, the inner wall of the regenerator channel has an adsorbent, and the regenerator channel with the adsorbent forms the adsorbent flow channel.

3. The adsorption thermoacoustic refrigeration unit according to claim 1, characterized in that: The regenerator (12) is made of an adsorbent, and the regenerator (12) is provided with a regenerator channel, wherein the regenerator channel forms the adsorbent flow channel.

4. The adsorption thermoacoustic refrigeration unit according to any one of claims 1 to 3, characterized in that: The adsorbent is one of activated carbon, siliceous rock and metal hydride.

5. The adsorption thermoacoustic refrigeration unit according to claim 4, characterized in that: The adsorbent gas is one of carbon dioxide, ammonia and hydrogen.

6. The adsorption thermoacoustic refrigeration unit according to any one of claims 1 to 3, characterized in that: The heat regenerator (12) is made of stacked multiple layers of wire mesh or porous foam.

7. The adsorption thermoacoustic refrigeration unit according to any one of claims 1 to 3, characterized in that: The plurality of adsorbent flow channels are arranged in parallel and at equal intervals.

8. An adsorption thermoacoustic refrigerator, characterized in that: It comprises a resonance tube (2), a sound source (3), and an adsorption thermoacoustic refrigeration unit according to any one of claims 1 to 7, wherein the adsorption thermoacoustic refrigeration unit (1) and the sound source (3) are arranged at intervals on the resonance tube (2).

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