A thermoacoustic refrigerator and a thermoacoustic refrigerating refrigerator

Abstract

The present invention discloses a thermoacoustic refrigerator, comprising: a refrigerator main body having a cold end and a hot end; an integrated chamber structure disposed on the refrigerator main body, the integrated chamber structure having a cold-end heat exchange chamber surrounding the cold end and a hot-end heat exchange chamber surrounding the hot end, the cold-end heat exchange chamber and the hot-end heat exchange chamber being relatively separated and independent, the cold-end heat exchange chamber being provided with a first outlet end and a first inlet end for the flow of a coolant, and the hot-end heat exchange chamber being provided with a second outlet end and a second inlet end for the flow of the coolant. The present invention provides a thermoacoustic refrigerator, which is integrated with a cold-end heat exchange chamber and a hot-end heat exchange chamber, and uses an integrated modular structure, so that when the thermoacoustic refrigerator is applied to other devices, the overall structure of the applied device can be simplified and the overall cost of the applied device can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoacoustic refrigeration, and particularly to a thermoacoustic refrigerator and a thermoacoustic refrigeration machine. Background Art

[0002] In a thermoacoustic refrigeration machine, an inert gas such as helium is used as a working medium. An external power source drives a piston and a displacer to work, repeatedly compressing and expanding the working medium to form a low-temperature part and a high-temperature part. Then, the low-temperature part absorbs heat from inside the box, and the high-temperature part dissipates heat to the surrounding environment.

[0003] In the process of applying a thermoacoustic refrigeration machine to a refrigerator, in order to utilize the cold quantity of the low-temperature part of the thermoacoustic refrigeration machine and dissipate the heat of the high-temperature part of the thermoacoustic refrigeration machine, generally, a cold-end heat exchange chamber and a hot-end heat exchange chamber need to be separately provided on the refrigerator body. During installation, the low-temperature part and the high-temperature part of the thermoacoustic refrigeration machine are respectively placed in two different heat exchange chambers, and the cold quantity or heat is dissipated through a heat exchange medium.

[0004] However, when using a liquid as a heat exchange medium, in order to ensure the sealing performance during the assembly of the thermoacoustic refrigeration machine on the refrigerator body and prevent liquid leakage, a special sealing structure needs to be designed on the heat exchange chamber of the refrigerator body. This undoubtedly makes the structure of the refrigerator body more complex and increases the overall production cost of the refrigerator. At the same time, since a heat exchange chamber with good sealing performance needs to be installed at a specific position on the refrigerator body, the setting of the heat exchange circulation pipeline and the installation position and orientation of the thermoacoustic refrigeration machine will be limited, resulting in inconvenient use. Summary of the Invention

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the present invention provides a thermoacoustic refrigeration machine integrated with a cold-end heat exchange chamber and a hot-end heat exchange chamber, using an integrated modular structure to simplify the overall structure of the applied device and reduce the overall cost of the applied device when the thermoacoustic refrigeration machine is applied to other devices.

[0006] The technical solution adopted by the present invention to solve its problems is as follows:

[0007] A thermoacoustic refrigeration machine, comprising:

[0008] A refrigeration machine main body having a cold end and a hot end;

[0009] An integrated chamber structure provided on the refrigeration machine main body, the integrated chamber structure having a cold-end heat exchange chamber surrounding the cold end and a hot-end heat exchange chamber surrounding the hot end. The cold-end heat exchange chamber and the hot-end heat exchange chamber are relatively separated and independent. The cold-end heat exchange chamber is provided with a first outlet end and a first inlet end for the flow of a coolant, and the hot-end heat exchange chamber is provided with a second outlet end and a second inlet end for the flow of the coolant.

[0010] The thermoacoustic refrigerator provided by the present invention integrates the cold-end heat exchange chamber and the hot-end heat exchange chamber to the cold end and the hot end of the refrigerator body respectively, and correspondingly sets an outlet end and an inlet end, which can meet the requirement of low heat exchange temperature difference. When applying this thermoacoustic refrigerator to other equipment, only the low-temperature circulation loop and the normal-temperature circulation loop need to be correspondingly connected to the cold-end heat exchange chamber and the hot-end heat exchange chamber, so as to simplify the overall structure of the applied equipment and reduce the overall cost of the applied equipment; on the other hand, the thermoacoustic refrigerator integrated with the heat exchange chamber is not restricted by the structure of the applied equipment and can be assembled at different positions of the applied equipment as required, which is convenient to use.

[0011] Further, the integrated chamber structure includes a sleeve with a hollow cavity. Both the cold end and the hot end include at least one heat conduction ring. The sleeve is sleeved on the heat conduction rings on the cold end and the hot end to form the cold-end heat exchange chamber and the hot-end heat exchange chamber respectively.

[0012] Thus, the two heat exchange chambers are respectively formed between the two heat conduction rings and the sleeve, and the two heat conduction rings are used for conducting cold or heat, avoiding the leakage of the refrigerant gas (i.e., inert gas) of the refrigerator during long-term use, and enhancing the use stability of the thermoacoustic refrigerator.

[0013] Further, a ring groove for the flow of the coolant is formed by inward depression on the outer side wall of the heat conduction ring. The outer edge of the ring groove abuts against the inner wall of the sleeve. The first outlet end and the first inlet end, and the second outlet end and the second inlet end are respectively communicated with different ring grooves.

[0014] Thus, using the ring groove of the heat conduction ring as the flow channel of the coolant can ensure a large heat exchange area between the heat conduction ring and the coolant, so as to ensure its heat exchange efficiency.

[0015] Further, at least one outer fin for increasing the heat exchange area is arranged in the ring groove.

[0016] Thus, the outer fins are used to further enhance the heat exchange area of the cold-end heat conduction ring.

[0017] Further, the outer fins are arc-shaped and extend along the circumferential direction of the ring groove.

[0018] Thus, the blockage of the coolant by the outer fins is reduced, and the flow power loss of the coolant is reduced.

[0019] Further, both the cold end and the hot end further include folded fins arranged inside the heat conduction ring, and the folded fins are thermally connected to the heat conduction ring.

[0020] Thus, by folding the fins to increase the contact area with the working fluid gas (i.e., inert gas) of the refrigerator, the heat exchange effect at the cold end or the hot end is enhanced. At the same time, the folded fins can be independent of the heat conduction ring to serve as a separate part, simplifying the structure of the heat conduction ring, thereby reducing the overall production cost of the cold end or the hot end.

[0021] Further, the sleeve includes a main cylinder body, a first enlarged portion and a second enlarged portion oppositely arranged at both ends of the main cylinder body. The heat conduction ring at the cold end is installed in the first enlarged portion, and the heat conduction ring at the hot end is installed in the second enlarged portion.

[0022] Thus, it is convenient for the positioning and assembly of the two heat conduction rings on the sleeve. On the other hand, using the ring groove structure of the heat conduction ring as the main part of the heat exchange chamber, there is no need to provide a groove flow channel for the flow of the coolant on the inner walls of the two enlarged portions, which can effectively simplify the overall structure of the sleeve and reduce the production cost of the sleeve.

[0023] Further, the second enlarged portion is inserted and fixed to the refrigerator main body, and the refrigerator main body abuts against the heat conduction ring at the hot end to clamp and fix the heat conduction ring in the second enlarged portion.

[0024] Thus, the positioning structure of the heat conduction ring at the hot end is simplified.

[0025] Further, the refrigerator main body further has an end cover, the end cover seals the end of the first enlarged portion, and the end cover abuts against the heat conduction ring at the cold end to clamp and fix the heat conduction ring in the first enlarged portion.

[0026] Thus, the positioning structure of the heat conduction ring at the cold end is simplified. At the same time, the end cover can also play a role in heat insulation and sealing, reducing the loss of cold at the cold end and the loss of the working fluid gas (i.e., inert gas) of the refrigerator.

[0027] The present invention also discloses a thermoacoustic refrigeration refrigerator, which includes: a refrigerator box body, the thermoacoustic refrigerator as described above, a low-temperature circulation loop and a normal-temperature circulation loop. Among them, the cold-end heat exchange chamber is connected in series on the low-temperature circulation loop, and the low-temperature circulation loop is used to transport the cold at the cold end into the refrigerator box body; the hot-end heat exchange chamber is connected in series on the normal-temperature circulation loop, and the normal-temperature circulation loop is used to dissipate the waste heat at the hot end to the outside. Thus, when applying this thermoacoustic refrigerator to the thermoacoustic refrigeration refrigerator, there is no need to provide a heat exchange chamber on the refrigerator box body, which can simplify the overall structure of the thermoacoustic refrigeration refrigerator and reduce the overall cost of the thermoacoustic refrigeration refrigerator.

[0028] In summary, the thermoacoustic refrigerator provided by the present invention has the following technical effects:

[0029] In this thermoacoustic refrigerator, an integrally designed liquid heat exchange chamber is used to achieve a low heat exchange temperature difference, so as to adapt to the low temperature difference characteristics of the applied equipment. At the same time, the overall structure of the applied equipment is simplified, and the overall cost of the applied equipment is reduced. This thermoacoustic refrigerator also has the characteristics of strong working stability, low maintenance cost, high heat exchange efficiency, and low flow power consumption of the secondary refrigerant. Brief Description of the Drawings

[0030] Figure 1 FIG. 6 is a schematic perspective view of the thermoacoustic refrigerator according to Embodiment 1 of the present invention;

[0031] Figure 2 FIG. 10 is a schematic partial sectional view of the thermoacoustic refrigerator according to Embodiment 1 of the present invention at the integrated chamber structure;

[0032] Figure 3 FIG. 14 is an exploded view of the thermoacoustic refrigerator according to Embodiment 1 of the present invention;

[0033] Figure 4 FIG. 18 is a schematic perspective view of the sleeve according to Embodiment 1 of the present invention;

[0034] Figure 5 FIG. 22 is a schematic perspective view of the heat conducting ring according to Embodiment 1 of the present invention;

[0035] Figure 6 is Figure 2 the enlarged partial view of part A shown in;

[0036] Figure 7 is Figure 2 the enlarged partial view of part B shown in;

[0037] Figure 8 FIG. 38 is a schematic perspective view of the thermoacoustic refrigerator according to Embodiment 2 of the present invention.

[0038] Among them, the meanings of the reference numerals are as follows:

[0039] 1, refrigerator cabinet; 2, thermoacoustic refrigerator; 21, refrigerator main body; 211, cold end; 212, hot end; 213, heat conducting ring; 2131, ring groove; 2132, outer fin; 214, folded fin; 215, end cover; 22, integrated chamber structure; 221, sleeve; 2211, main cylinder; 2212, first enlarged part; 2213, second enlarged part; 2214, first outlet end; 2215, first inlet end; 2216, second outlet end; 2217, second inlet end; 222, cold end heat exchange chamber; 223, hot end heat exchange chamber; 3, low temperature circulation loop; 4, normal temperature circulation loop. Detailed Description of the Embodiments

[0040] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "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 present invention 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 should not be construed as a limitation to the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Embodiment 1

[0044] The present invention discloses a thermoacoustic refrigerator 2, which is applied to a heat exchange system, such as devices that need to exchange heat for refrigeration or heating, such as refrigerators, air conditioners, steam generators, etc. The thermoacoustic refrigerator 2 adopts an integrated modular structure, and specifically integrates a cold-end heat exchange chamber 222 and a hot-end heat exchange chamber 223 to simplify the overall structure of the applied device and reduce the overall cost of the applied device.

[0045] Refer to Figure 1 and Figure 2 , in this embodiment, the thermoacoustic refrigerator 2 includes a refrigerator main body 21 and an integrated chamber structure 22 provided on the refrigerator main body 21. Among them, the refrigerator main body 21 has a cold end 211 and a hot end 212, and the integrated chamber structure 22 has a relatively separated and independent cold-end heat exchange chamber 222 and a hot-end heat exchange chamber 223; the cold-end heat exchange chamber 222 is arranged to surround the cold end 211, and the cold-end heat exchange chamber 222 is provided with a first outlet end 2214 and a first inlet end 2215 for the flow of the coolant, so as to output the cold quantity of the cold end 211 outward through the coolant; the hot-end heat exchange chamber 223 is arranged to surround the hot end 212, and the hot-end heat exchange chamber 223 is provided with a second outlet end 2216 and a second inlet end 2217 for the flow of the coolant, so as to output the heat of the hot end 212 outward through the coolant.

[0046] It should be noted that the functional components that use the refrigerant working gas (i.e., inert gas) in the thermoacoustic refrigerator 2 to generate heat and cold are not the innovative part of the present invention. Therefore, in order to simplify the drawings and implementation content, in the attached Figure 2The specific structure of this functional component is not shown and described in this article.

[0047] Through the above solution, the cold-end heat exchange chamber 222 and the hot-end heat exchange chamber 223 are respectively integrated into the cold end 211 and the hot end 212 of the refrigerator body 21, and the outlet end and the inlet end are correspondingly arranged, which can meet the requirement of a low heat exchange temperature difference. When applying this thermoacoustic refrigerator 2 to other devices, it is only necessary to correspondingly connect the low-temperature circulation loop and the normal-temperature circulation loop to the cold-end heat exchange chamber 222 and the hot-end heat exchange chamber 223, so as to simplify the overall structure of the applied device and reduce the overall cost of the applied device. On the other hand, the thermoacoustic refrigerator 2 integrated with the heat exchange chamber is not restricted by the structure of the applied device and can be assembled at different positions of the applied device as required, which is convenient to use.

[0048] It can be understood that in the above solution, when the coolant flows through the cold-end heat exchange chamber 222 or the hot-end heat exchange chamber 223 in the integrated chamber structure 22, it can be in direct contact with the cold end 211 or the hot end 212, or in indirect contact with the cold end 211 or the hot end 212; that is, the cold end 211 or the hot end 212 and the integrated chamber structure 22 enclose the cold-end heat exchange chamber 222 or the hot-end heat exchange chamber 223, or the cold-end heat exchange chamber 222 or the hot-end heat exchange chamber 223 can be independently formed on the integrated chamber structure 22. In the following description of this article, a technical solution in which the cold-end heat exchange chamber 222 or the hot-end heat exchange chamber 223 is enclosed between the cold end 211 or the hot end 212 and the integrated chamber structure 22 is specifically listed.

[0049] Refer to Figure 2 、 Figure 6 and Figure 7 In this embodiment, the structures of the cold end 211 and the hot end 212 are the same, and the difference between them can be aspects that do not cause functional differences, such as different sizes, different subtle shapes, different component installation directions, etc.

[0050] Specifically, both the cold end 211 and the hot end 212 include at least one heat-conducting ring 213 and folded fins 214 disposed inside the heat-conducting ring 213. The folded fins 214 are thermally conductively connected to the heat-conducting ring 213, and this thermal conductive connection can be a butt joint with a large elastic force, or a transition fit, or a welding during assembly. As the heat exchanger structures on the thermoacoustic refrigerator 2, the cold end 211 and the hot end 212 can respectively exchange heat with the refrigerant gas of the refrigerator and dissipate heat outward through the heat-conducting ring 213. The folded fins 214 located inside the heat-conducting ring 213 can directly contact the refrigerant gas of the refrigerator, and the folded characteristics of the folded fins 214 are utilized to increase the contact area with the refrigerant gas of the refrigerator, so as to transfer heat between the refrigerant gas of the refrigerator and the heat-conducting ring 213 more quickly, so as to enhance the heat exchange effect of the cold end 211 or the hot end 212. At the same time, the folded fins 214 can be independent of the heat-conducting ring 213 to serve as a single part, so as to simplify the structure of the heat-conducting ring 213, thereby reducing the overall production cost of the cold end 211 or the hot end 212.

[0051] Refer to Figures 1 to 3 , in this embodiment, the integrated chamber structure 22 includes a sleeve 221 with a hollow cavity. The sleeve 221 is sleeved on the heat-conducting rings 213 on the cold end 211 and the heat-conducting rings 213 on the hot end 212 to form a cold-end heat exchange chamber 222 and a hot-end heat exchange chamber 223 respectively. In this way, the cold quantity of the cold end 211 is transferred to the cold-end heat exchange chamber 222 through the corresponding heat-conducting ring 213, so that the coolant flowing through the cold-end heat exchange chamber 222 can output its cold quantity outward; the heat of the hot end 212 is transferred to the hot-end heat exchange chamber 223 through the corresponding heat-conducting ring 213, so that the coolant flowing through the hot-end heat exchange chamber 223 can output its heat outward. By forming the two heat exchange chambers between the two heat-conducting rings 213 and the sleeve 221 respectively, the two heat-conducting rings 213 are used for heat conduction or heat transfer, avoiding the leakage of the refrigerant gas of the refrigerator during long-term use, and enhancing the use stability of the thermoacoustic refrigerator 2.

[0052] Refer to Figure 2 and Figure 4 , in this embodiment, the sleeve 221 includes a main cylinder body 2211, a first enlarged portion 2212 and a second enlarged portion 2213. The first enlarged portion 2212 and the second enlarged portion 2213 are oppositely arranged at both ends of the main cylinder body 2211. The inner diameters of the first enlarged portion 2212 and the second enlarged portion 2213 are both larger than the inner diameter of the main cylinder body 2211, and the outer diameters of the first enlarged portion 2212 and the second enlarged portion 2213 are both larger than the outer diameter of the main cylinder body 2211, so that the sleeve 221 forms a columnar structure with a thin middle and thick ends.

[0053] Specifically, the inner diameter of the first enlarged portion 2212 is adapted to the outer diameter of the heat conduction ring 213 of the cold end 211, so that the first enlarged portion 2212 can be sleeved on the heat conduction ring 213 of the cold end 211, realizing the installation of the heat conduction ring 213 of the cold end 211 on the first enlarged portion 2212, facilitating the positioning and installation of the heat conduction ring 213 on the sleeve 221.

[0054] The inner diameter of the second enlarged portion 2213 is adapted to the outer diameter of the heat conduction ring 213 of the hot end 212, so that the second enlarged portion 2213 can be sleeved on the heat conduction ring 213 of the cold end 211, realizing the installation of the heat conduction ring 213 of the cold end 211 on the second enlarged portion 2213, facilitating the positioning and installation of the heat conduction ring 213 on the sleeve 221.

[0055] It should be noted that the contact surface between the first enlarged portion 2212 and the heat conduction ring 213 of the cold end 211, and the contact surface between the second enlarged portion 2213 and the heat conduction ring 213 of the hot end 212 can also be sealed by gluing or welding to prevent liquid leakage.

[0056] Refer to Figure 4 , specifically, the first outlet end 2214, the first inlet end 2215, the second outlet end 2216 and the second inlet end 2217 are all arranged on the outer side wall of the sleeve 221; particularly, the first outlet end 2214 and the first inlet end 2215 are oppositely arranged on the first enlarged portion 2212 and communicate with the cold end heat exchange chamber 222, and the second outlet end 2216 and the second inlet end 2217 are oppositely arranged on the second enlarged portion 2213 and communicate with the hot end heat exchange chamber 223, thus specifically realizing the flow of the coolant.

[0057] Refer to Figure 2 and Figure 3 , in this embodiment, the second enlarged portion 2213 is inserted and fixed to the main body 21 of the refrigerator, and the main body of the refrigerator abuts against the heat conduction ring 213 of the hot end to clamp and fix the heat conduction ring 213 of the hot end within the second enlarged portion 2213; the main body 21 of the refrigerator also has an end cover 215, the end cover 215 seals the end of the first enlarged portion 2212, and the end cover 215 abuts against the heat conduction ring 213 of the cold end to clamp and fix the heat conduction ring 213 of the cold end within the first enlarged portion 2212. It should be noted that the second enlarged portion 2213 and the main body 21 of the refrigerator can be fixed by interference fit, or the second enlarged portion 2213 and the main body 21 of the refrigerator can also be reinforced by welding or gluing; similarly, the end cover 215 and the first enlarged portion 2212 can be fixed by interference fit, or the end cover 215 and the first enlarged portion 2212 can also be reinforced by welding or gluing.

[0058] Through the above solution, the positioning structure of the two heat-conducting rings 213 on the sleeve 221 is simplified. At the same time, the end cover 215 can also play the role of heat insulation and sealing, reducing the loss of cold quantity at the cold end 211 and the loss of the working medium gas of the refrigerator. On the other hand, since there is no need to fix or position the components with screws, the miniaturization of the thermoacoustic refrigerator 2 can also be achieved.

[0059] Refer to Figure 5 , in this embodiment, in order to ensure a large heat exchange area between the heat-conducting ring 213 and the coolant to ensure its heat exchange efficiency, a ring groove 2131 for the flow of the coolant is formed by inward depression on the outer side wall of the heat-conducting ring 213. The outer edge of the ring groove 2131 abuts against the inner wall of the sleeve 221. The first outlet end 2214 and the first inlet end 2215, as well as the second outlet end 2216 and the second inlet end 2217 are respectively communicated with different ring grooves 2131. Specifically, taking the cold end 211 as an example, the outer edge of the ring groove 2131 of its heat-conducting ring 213 abuts against the inner wall of the first enlarged portion 2212 in the sleeve 221, and the first outlet end 2214 and the first inlet end 2215 are communicated with the ring groove 2131 of this heat-conducting ring 213; taking the hot end 212 as an example, the outer edge of the ring groove 2131 of its heat-conducting ring 213 abuts against the inner wall of the second enlarged portion 2213 in the sleeve 221, and the second outlet end 2216 and the second inlet end 2217 are communicated with the ring groove 2131 of this heat-conducting ring 213. To realize the flow of the coolant on the heat-conducting ring 213 at the cold end 211 and the heat-conducting ring 213 at the hot end 212.

[0060] Thus, using the ring groove 2131 of the heat-conducting ring 213 as the flow channel of the coolant can ensure a large heat exchange area between the heat-conducting ring 213 and the coolant to ensure its heat exchange efficiency. On the other hand, using the ring groove structure of the heat-conducting ring 213 as the main part of the heat exchange chamber, there is no need to set a groove flow channel for the flow of the coolant on the inner walls of the two enlarged portions, which can effectively simplify the overall structure of the sleeve 221 and reduce the production cost of the sleeve 221.

[0061] Refer to Figure 5 , in this embodiment, in order to further enhance the heat exchange area of the cold-end heat-conducting ring 213, at least one outer fin 2132 for increasing the heat exchange area is arranged in the ring groove 2131.

[0062] Preferably, the outer fin 2132 is arc-shaped and extends along the circumferential direction of the ring groove 2131, thereby reducing the blockage of the outer fin 2132 to the coolant and reducing the flow power loss of the coolant.

[0063] Preferably, the outer fins 2132 located at the cold-end heat exchange chamber 222 avoid the first outlet end 2214 and the first inlet end 2215, and the outer fins 2132 located at the hot-end heat exchange chamber 223 avoid the second outlet end 2216 and the second inlet end 2217, which can prevent the coolant from impacting the outer fins 2132 when flowing in and out, so as to further reduce the flow power loss of the coolant.

[0064] Refer to Figure 3 and Figure 5 , in this embodiment, specifically, each heat-conducting ring 213 is provided with eight outer fins 2132, and the eight outer fins 2132 are divided into two groups and symmetrically arranged in the annular groove 2131. The four outer fins 2132 in each group are arranged along the axial direction of the annular groove 2131, and there are intervals between the two ends of the two groups of outer fins 2132. The two intervals are respectively located at the conduction points of the outlet end and the annular groove 2131, and the inlet end and the annular groove 2131.

[0065] Refer to Figure 2 and Figure 3 , during operation, at the cold-end heat exchange chamber 222, when the coolant flows into the annular groove 2131 from the first inlet end 2215, it is first divided into two groups of outer fins 2132 on both sides by one of the intervals, and the coolant can flow along the extending direction of the outer fins 2132, and then converge at the other interval and flow out from the first outlet end 2214.

[0066] By the same principle, during operation, at the hot-end heat exchange chamber 223, when the coolant flows into the annular groove 2131 from the second inlet end 2217, it is first divided into two groups of outer fins 2132 on both sides by one of the intervals, and the coolant can flow along the extending direction of the outer fins 2132, and then converge at the other interval and flow out from the second outlet end 2216.

[0067] It should be noted that the number of outer fins 2132 can also be two, three, four, etc. The present invention does not specifically limit the number of outer fins 2132.

[0068] Through the above solution, the blockage of the outer fins 2132 to the coolant is reduced to a large extent, ensuring that the coolant has strong power and small loss when flowing in the cold-end heat exchange chamber 222 and the hot-end heat exchange chamber 223.

[0069] Embodiment 2

[0070] Refer to Figure 7 , the present invention discloses a thermoacoustic refrigeration refrigerator, which applies the thermoacoustic refrigerator 2 as described in Embodiment 1.

[0071] In this embodiment, the thermoacoustic refrigeration refrigerator includes a refrigerator body 1, a thermoacoustic refrigerator 2 as described in Embodiment 1, a low-temperature circulation loop 3, and a normal-temperature circulation loop 4.

[0072] Among them, a cold-end heat exchange chamber 222 is connected in series on the low-temperature circulation loop 3. The low-temperature circulation loop 3 is used to transfer the cold quantity of the cold end 211 into the refrigerator body 1 for refrigeration; a hot-end heat exchange chamber 223 is connected in series on the normal-temperature circulation loop 4. The normal-temperature circulation loop 4 is used to dissipate the waste heat of the hot end 212 to the outside to cool the hot end 212.

[0073] When assembling the thermoacoustic refrigerator 2 to the thermoacoustic refrigeration refrigerator, it is only necessary to correspondingly connect the low-temperature circulation loop 3 and the normal-temperature circulation loop 4 to the cold-end heat exchange chamber 222 and the hot-end heat exchange chamber 223. There is no need to provide a heat exchange chamber on the refrigerator body 1, which can simplify the overall structure of the thermoacoustic refrigeration refrigerator and reduce the overall cost of the thermoacoustic refrigeration refrigerator.

[0074] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A thermoacoustic refrigerator, characterized in that, Comprising: A refrigerator main body having a cold end and a hot end; An integrated chamber structure disposed on the refrigerator main body, the integrated chamber structure having a cold-end heat exchange chamber surrounding the cold end and a hot-end heat exchange chamber surrounding the hot end, the cold-end heat exchange chamber and the hot-end heat exchange chamber being relatively separated and independent, the cold-end heat exchange chamber being provided with a first outlet end and a first inlet end for the flow of a coolant, and the hot-end heat exchange chamber being provided with a second outlet end and a second inlet end for the flow of the coolant; The integrated chamber structure includes a sleeve having a hollow cavity, both the cold end and the hot end including at least one heat conducting ring, and the sleeve being sleeved on the heat conducting rings on the cold end and the hot end to respectively form the cold-end heat exchange chamber and the hot-end heat exchange chamber; The sleeve includes a main cylinder body, a first enlarged portion and a second enlarged portion oppositely disposed at both ends of the main cylinder body, the heat conducting ring of the cold end being installed in the first enlarged portion, the heat conducting ring of the hot end being installed in the second enlarged portion, the first outlet end and the first inlet end being oppositely disposed on the first enlarged portion and communicating with the cold-end heat exchange chamber, and the second outlet end and the second inlet end being oppositely disposed on the second enlarged portion and communicating with the hot-end heat exchange chamber.

2. The thermoacoustic refrigerator according to claim 1, characterized in that, An annular groove for the flow of the coolant is formed by inward depression on the outer side wall of the heat conducting ring, the outer edge of the annular groove abutting against the inner wall of the sleeve, and the first outlet end and the first inlet end, and the second outlet end and the second inlet end respectively communicate with different annular grooves.

3. The thermoacoustic refrigerator according to claim 2, wherein, At least one outer fin for increasing the heat exchange area is provided in the annular groove.

4. The thermoacoustic refrigerator according to claim 3, characterized in that, The outer fin is arc-shaped and extends along the circumferential direction of the annular groove.

5. The thermoacoustic refrigerator according to claim 1, characterized in that, Both the cold end and the hot end further include folding fins disposed inside the heat conducting ring, and the folding fins are thermally conductively connected to the heat conducting ring.

6. The thermoacoustic refrigerator according to claim 1, characterized in that, The second enlarged portion is inserted and fixed to the refrigerator main body, and the refrigerator main body abuts against the heat conducting ring of the hot end to clamp and fix the heat conducting ring inside the second enlarged portion.

7. The thermoacoustic refrigerator according to claim 1, wherein The refrigerator main body further has an end cover, the end cover covering the end of the first enlarged portion, and the end cover abutting against the heat conducting ring of the cold end to clamp and fix the heat conducting ring inside the first enlarged portion.

8. A thermoacoustic refrigeration refrigerator, characterized in that, Comprising: A refrigerator cabinet; A thermoacoustic refrigerator according to any one of claims 1 to 7; A low-temperature circulation loop having the cold-end heat exchange chamber connected in series thereto, the low-temperature circulation loop being used for delivering the cold quantity of the cold end into the refrigerator cabinet; A normal-temperature circulation loop having the hot-end heat exchange chamber connected in series thereto, the normal-temperature circulation loop being used for dissipating the waste heat of the hot end to the outside.

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