Air conditioning device

Abstract

The present application relates to the air conditioning technical field, specifically to an air conditioning device. The present application aims to solve the problem of small environmental application range of the existing air conditioner. For this purpose, the air conditioning device of the present application comprises: a thermoacoustic engine comprising a hot-end heat exchanger, a first cold-end heat exchanger and a second cold-end heat exchanger; a first heat exchanger for heat exchange with the hot-end heat exchanger through a first cold carrier; a compressor in circulation communication with the first cold-end heat exchanger through a first refrigerant pipeline; a throttling element arranged in the first refrigerant pipeline and having two ends respectively in communication with a suction port of the compressor and one end of the first cold-end heat exchanger; and a second heat exchanger arranged to be capable of directly or indirectly exchanging heat with the second cold-end heat exchanger and also capable of directly or indirectly obtaining heat of the refrigerant between the throttling element and the suction port of the compressor. By combining the thermoacoustic engine with the conventional vapor compression cycle, a greater temperature span operation of the device can be realized, and the application range of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically to an air conditioning device. Background Technology

[0002] With the advancement of technology, air conditioners, as household appliances for regulating air temperature, are increasingly appearing in users' homes. Typically, household air conditioners use a vapor compression cycle, which involves using a compressor to drive the refrigerant to circulate between the condenser, throttling element, and evaporator. Energy transfer is achieved through the phase change of the refrigerant, and the indoor temperature is regulated by heat exchange between the air and the refrigerant.

[0003] However, traditional air conditioners are more efficient at specific temperatures, but their efficiency will drop significantly in some special environments such as high or low temperatures, and they may even shut down and become inoperable in extreme high or low temperatures.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address at least one of the aforementioned problems in the prior art, namely the limited environmental applicability of existing air conditioners, this application provides an air conditioning device comprising a thermoacoustic engine, a compressor, a first heat exchanger, a second heat exchanger, and a throttling element.

[0006] The thermoacoustic machine includes a hot-end heat exchanger, a first cold-end heat exchanger, and a second cold-end heat exchanger. The first heat exchanger and the hot-end heat exchanger exchange heat through a first refrigerant. The compressor is circulatedly connected to the first cold-end heat exchanger through a first refrigerant pipeline. The throttling element is disposed on the first refrigerant pipeline and its two ends are respectively connected to the suction port of the compressor and one end of the first cold-end heat exchanger. The second heat exchanger is configured to exchange heat directly or indirectly with the second cold-end heat exchanger and can also directly or indirectly obtain heat from the refrigerant between the throttling element and the suction port of the compressor.

[0007] The air conditioning device of this application combines a thermoacoustic engine with a traditional vapor compression cycle, enabling a wider operating temperature range and expanding its applicability. Specifically, by incorporating a first and second cold-end heat exchanger within the thermoacoustic engine, with the compressor connected to the first cold-end heat exchanger and the second heat exchanger capable of exchanging heat with the second cold-end heat exchanger and also acquiring refrigerant heat, this configuration allows the thermoacoustic engine to provide heat independently or in combination with the compressor in extreme environments, thereby enhancing its operational capabilities under extreme conditions. Furthermore, since the heat transfer process during thermoacoustic engine operation is less affected by ambient temperature, the air conditioning device of this application exhibits a significant advantage in operating efficiency compared to a simple traditional air conditioner.

[0008] In the preferred embodiment of the above-mentioned air conditioning device, the first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.

[0009] In a preferred embodiment of the above-mentioned air conditioning device, the first heat exchanger is circulatedly connected to the hot-end heat exchanger via a first cooling pipeline, and the air conditioning device further includes a first pump body disposed in the first cooling pipeline, with a first refrigerant filling the first cooling pipeline; or

[0010] The first heat exchanger is a heat pipe heat exchanger, wherein the evaporation end of the heat pipe heat exchanger exchanges heat with the hot end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or

[0011] The first heat exchanger and the hot-end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe.

[0012] In the preferred embodiment of the above-mentioned air conditioning device, the air conditioning device further includes a third heat exchanger and a second refrigerant pipeline. The third heat exchanger is disposed on the second refrigerant pipeline. One end of the second refrigerant pipeline is connected to the refrigerant pipeline between one end of the first cold end heat exchanger and the exhaust port of the compressor. The second end of the second refrigerant pipeline is connected to the refrigerant pipeline between the other end of the first cold end heat exchanger and the throttling element.

[0013] The air conditioning device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the first cold-end heat exchanger or the third heat exchanger.

[0014] By setting up a third heat exchanger, the steam compression cycle can operate independently without turning on the thermoacoustic engine, thereby improving the applicability of the device and ensuring product operating efficiency.

[0015] In the preferred embodiment of the above-mentioned air conditioning device, at least one of the first heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or

[0016] The first heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger.

[0017] By having the first and third heat exchangers belong to the same heat exchanger, a high degree of integration and functional reuse of the heat exchangers can be achieved, thereby reducing the structural complexity of the device and improving the degree of integration of the device.

[0018] In the preferred embodiment of the above-mentioned air conditioning device, the air conditioning device further includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, one end of the first cold end heat exchanger, the throttling element and the intake port of the compressor.

[0019] By setting a four-way valve, the device can operate in multiple modes, further expanding its application scenarios.

[0020] In the preferred embodiment of the above-mentioned air conditioning device, the second heat exchanger includes a first heat exchange component and a second heat exchange component that are independent of each other. The first heat exchange component is disposed on a first refrigerant pipeline between the throttling element and the suction port of the compressor. The second heat exchange component is circulatedly connected to the second cold end heat exchanger through a second refrigerant pipeline. The air conditioning device also includes a second pump body, which is disposed on the second refrigerant pipeline and is filled with a second refrigerant.

[0021] The above configuration helps to achieve efficient heat exchange in the second heat exchanger and reduce energy loss during the heat transfer process.

[0022] In the preferred embodiment of the above-mentioned air conditioning device, the air conditioning device further includes an intermediate heat exchanger, which has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline and located between the suction port of the compressor and the throttling element. The second heat exchanger, the second heat exchange flow path and the second cold end heat exchanger are circulatedly connected through a second cooling pipeline. The air conditioning device further includes a second pump body, which is disposed in the second cooling pipeline and filled with a second refrigerant.

[0023] By setting up an intermediate heat exchanger, the heat from the steam compression cycle can be indirectly transferred to the second heat exchanger, reducing the structural complexity of the second heat exchanger.

[0024] In the preferred embodiment of the above-mentioned air conditioning device, the air conditioning device further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second cold end heat exchanger. The air conditioning device also includes a valve, which is disposed on the second refrigerant pipeline. The valve is configured to selectively control the flow of the second refrigerant through the bypass pipeline or the second cold end heat exchanger.

[0025] By setting up a bypass pipeline, the flow direction of the refrigerant can be controlled, avoiding heat loss caused by the refrigerant flowing through the second cold-end heat exchanger, thereby improving the operating efficiency of the unit.

[0026] In the preferred embodiment of the above-mentioned air conditioning device, the second heat exchanger is circulatedly connected to the second cold-end heat exchanger through a second refrigerant pipeline. The air conditioning device further includes an intermediate heat exchanger, a second pump body, and a third refrigerant pipeline. The second pump body is disposed in the second refrigerant pipeline. The intermediate heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline, and the second heat exchange flow path is disposed in the third refrigerant pipeline. One end of the third refrigerant pipeline is connected to the second refrigerant pipeline between one end of the second cold-end heat exchanger and one end of the second heat exchanger. The other end of the third refrigerant pipeline is connected to the second refrigerant pipeline between the other end of the second cold-end heat exchanger and the second pump body. The second refrigerant pipeline and the third refrigerant pipeline are filled with a second refrigerant.

[0027] By setting up an intermediate heat exchanger, the heat from the steam compression cycle can be transferred to the second heat exchanger, reducing the structural complexity of the second heat exchanger.

[0028] In the preferred embodiment of the above-mentioned air conditioning device, the air conditioning device further includes a first valve and a second valve. The first valve is disposed on the second cooling pipeline between one end of the second cold end heat exchanger and one end of the third cooling pipeline, and the second valve is disposed on the third cooling pipeline.

[0029] By setting a first valve and a second valve, the flow direction of the refrigerant can be controlled, energy loss of the refrigerant can be avoided, and the operating efficiency of the device can be improved.

[0030] In the preferred embodiment of the above-mentioned air conditioning device, the thermoacoustic engine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a hot-end heat exchanger, a regenerator, a first cold-end heat exchanger, and a second cold-end heat exchanger. The first heat exchanger exchanges heat with the two hot-end heat exchangers through a first refrigerant. The exhaust port of the compressor is connected to the first end of at least one of the first cold-end heat exchangers. One end of the throttling element is connected to the second end of at least one of the first cold-end heat exchangers. The second heat exchanger exchanges heat directly or indirectly with the two second cold-end heat exchangers.

[0031] By setting up two thermoacoustic units in a thermoacoustic machine, not only can the cooling and heating capacity be doubled, but also the problem of high vibration and noise caused by a single thermoacoustic unit can be overcome by placing the two thermoacoustic units opposite each other.

[0032] In the preferred embodiment of the above-mentioned air conditioning device, the two thermoacoustic units are disposed in the same housing, and the two heat exchange sections are connected to each other or separated by a partition; and / or

[0033] The two hot-end heat exchangers are far apart from each other.

[0034] By placing two thermoacoustic units within the same housing and separating the heat exchange sections with a partition, the manufacturing process can be simplified, eliminating the need for specific design modifications to the housing's interior. Furthermore, the two heat exchange sections are interconnected, resulting in lower material costs, and the integrated design offers higher reliability and better heat exchange performance. Solution 1. An air conditioning device, characterized in that the air conditioning device includes a thermoacoustic engine, a compressor, a first heat exchanger, a second heat exchanger, and a throttling element. The thermoacoustic machine includes a hot-end heat exchanger, a first cold-end heat exchanger, and a second cold-end heat exchanger. The first heat exchanger and the hot-end heat exchanger exchange heat through a first refrigerant. The compressor is circulatedly connected to the first cold-end heat exchanger through a first refrigerant pipeline. The throttling element is disposed on the first refrigerant pipeline and its two ends are respectively connected to the suction port of the compressor and one end of the first cold-end heat exchanger. The second heat exchanger is configured to exchange heat directly or indirectly with the second cold-end heat exchanger and can also directly or indirectly obtain heat from the refrigerant between the throttling element and the suction port of the compressor. Option 2. The air conditioning device according to Option 1, characterized in that the first heat exchanger is an outdoor heat exchanger and the second heat exchanger is an indoor heat exchanger. Option 3. The air conditioning device according to Option 1, characterized in that the first heat exchanger is circulatedly connected to the hot-end heat exchanger through a first cooling pipeline, and the air conditioning device further includes a first pump body, the first pump body being disposed in the first cooling pipeline, and a first refrigerant being filled in the first cooling pipeline; or The first heat exchanger is a heat pipe heat exchanger, wherein the evaporation end of the heat pipe heat exchanger exchanges heat with the hot end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or The first heat exchanger and the hot-end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe. Option 4. The air conditioning device according to Option 1, characterized in that the air conditioning device further includes a third heat exchanger and a second refrigerant pipeline, the third heat exchanger is disposed on the second refrigerant pipeline, one end of the second refrigerant pipeline is connected to the refrigerant pipeline between one end of the first cold end heat exchanger and the exhaust port of the compressor, and the second end of the second refrigerant pipeline is connected to the refrigerant pipeline between the other end of the first cold end heat exchanger and the throttling element; The air conditioning device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the first cold-end heat exchanger or the third heat exchanger. Option 5. The air conditioning device according to Option 4, characterized in that at least one of the first heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or The first heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger. Option 6. The air conditioning device according to Option 4, characterized in that the air conditioning device further includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, one end of the first cold end heat exchanger, the throttling element and the intake port of the compressor. Option 7. An air conditioning device according to any one of Options 1-6, characterized in that the second heat exchanger includes a first heat exchange component and a second heat exchange component that are independent of each other, the first heat exchange component is disposed on a first refrigerant pipeline between the throttling element and the suction port of the compressor, the second heat exchange component is circulatedly connected to the second cold end heat exchanger through a second cooling pipeline, and the air conditioning device further includes a second pump body, the second pump body is disposed on the second cooling pipeline, and the second cooling pipeline is filled with a second refrigerant. Option 8. An air conditioning device according to any one of Options 1-6, characterized in that the air conditioning device further includes an intermediate heat exchanger, the intermediate heat exchanger having a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other, the first heat exchange flow path being disposed in the first refrigerant pipeline and located between the suction port of the compressor and the throttling element, the second heat exchanger, the second heat exchange flow path and the second cold end heat exchanger being circulatedly connected through a second cooling pipeline, the air conditioning device further including a second pump body, the second pump body being disposed in the second cooling pipeline, the second cooling pipeline being filled with a second refrigerant. Option 9. The air conditioning device according to Option 8, characterized in that the air conditioning device further includes a bypass pipeline, the two ends of the bypass pipeline being respectively connected to the two ends of the second cold end heat exchanger, and the air conditioning device further includes a valve, the valve being disposed on the second refrigerant pipeline, the valve being configured to selectively control the flow of the second refrigerant through the bypass pipeline or the second cold end heat exchanger. Option 10. An air conditioning device according to any one of Options 1-6, characterized in that the second heat exchanger is circulatedly connected to the second cold-end heat exchanger through a second refrigerant pipeline, the air conditioning device further includes an intermediate heat exchanger, a second pump body and a third refrigerant pipeline, the second pump body is disposed in the second refrigerant pipeline, the intermediate heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other, the first heat exchange flow path is disposed in the first refrigerant pipeline, the second heat exchange flow path is disposed in the third refrigerant pipeline, one end of the third refrigerant pipeline is connected to a second refrigerant pipeline between one end of the second cold-end heat exchanger and one end of the second heat exchanger, the other end of the third refrigerant pipeline is connected to a second refrigerant pipeline between the other end of the second cold-end heat exchanger and the second pump body, and the second refrigerant pipeline and the third refrigerant pipeline are filled with a second refrigerant. Option 11. The air conditioning device according to Option 10, characterized in that the air conditioning device further includes a first valve and a second valve, the first valve being disposed on the second cooling pipeline between one end of the second cold end heat exchanger and one end of the third cooling pipeline, and the second valve being disposed on the third cooling pipeline. Option 12. The air conditioning device according to Option 1, characterized in that the thermoacoustic engine includes two thermoacoustic units facing each other, each thermoacoustic unit includes a compression section and a heat exchange section, each heat exchange section includes a hot-end heat exchanger, a regenerator, a first cold-end heat exchanger, and a second cold-end heat exchanger, the first heat exchanger exchanges heat with the two hot-end heat exchangers through a first refrigerant, the exhaust port of the compressor is connected to a first end of at least one first cold-end heat exchanger, one end of the throttling element is connected to a second end of at least one first cold-end heat exchanger, and the second heat exchanger exchanges heat directly or indirectly with the two second cold-end heat exchangers. Option 13. The air conditioning device according to Option 12, characterized in that the two thermoacoustic units are disposed in the same housing, and the two heat exchange sections are connected to each other or separated by a partition; and / or The two hot-end heat exchangers are far apart from each other. Attached Figure Description

[0035] The present application will now be described with reference to the accompanying drawings. In the drawings:

[0036] Figure 1 This is a system diagram of a first embodiment of the air conditioning device of this application;

[0037] Figure 2 This is a system diagram of a second embodiment of the air conditioning device of this application;

[0038] Figure 3 This is a system diagram of the first operating mode of a second embodiment of the air conditioning device of this application;

[0039] Figure 4 This is a system diagram of the second operating mode of a second embodiment of the air conditioning device of this application;

[0040] Figure 5 This is a system diagram of the third operating mode of the second embodiment of the air conditioning device of this application;

[0041] Figure 6 This is a system diagram of the fourth operating mode of the second embodiment of the air conditioning device of this application;

[0042] Figure 7 This is a system diagram of a third embodiment of the air conditioning device of this application;

[0043] Figure 8 This is a system diagram of a fourth embodiment of the air conditioning device of this application;

[0044] Figure 9 This is a system diagram of a fifth embodiment of the air conditioning device of this application;

[0045] Figure 10 This is a schematic diagram of the structure of a thermoacoustic unit, which is the fifth embodiment of the air conditioning device of this application.

[0046] List of reference numerals

[0047] 1. Thermoacoustic unit; 11. Hot-end heat exchanger; 12. First cold-end heat exchanger; 13. Second cold-end heat exchanger; 14. Regenerator; 15. Shell; 16. Compressor section; 17. Baffle; 21. First heat exchanger; 22. Second heat exchanger; 221. First heat exchange component; 222. Second heat exchange component; 23. Third heat exchanger; 24. Intermediate heat exchanger; 31. Valve body; 32. Valve section; 33. First valve; 34. Second valve; 41. First fan; 42. Second fan; 51. First refrigerant line; 52. Second refrigerant line; 53. First cooling line; 54. Second cooling line; 55. Third cooling line; 56. Bypass line; 61. First pump body; 62. Second pump body; 7. Compressor; 8. Four-way valve; 9. Throttling element. Detailed Implementation

[0048] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0049] It should be noted that in the description of this application, terms such as "upper," "lower," "left," and "right," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] First refer to Figure 1 This paper provides a brief description of the air conditioning device of this application.

[0052] like Figure 1As shown, to address the issue of limited environmental applicability of existing air conditioners, the air conditioning device of this application includes a thermoacoustic engine 1, a compressor 7, a first heat exchanger 21, a second heat exchanger 22, and a throttling element 9. The thermoacoustic engine 1 includes a hot-end heat exchanger 11, a first cold-end heat exchanger 12, and a second cold-end heat exchanger 13. The first heat exchanger 21 exchanges heat with the hot-end heat exchanger 11 via a first refrigerant. The compressor 7 is circulated with the first cold-end heat exchanger 12 via a first refrigerant pipeline 51. The throttling element 9 is located in the first refrigerant pipeline 51, with its two ends connected to the suction port of the compressor 7 and one end of the first cold-end heat exchanger 12, respectively. The second heat exchanger 22 is configured to exchange heat directly or indirectly with the second cold-end heat exchanger 13, and can also directly or indirectly obtain heat from the refrigerant between the throttling element 9 and the suction port of the compressor 7.

[0053] In one possible implementation, the first heat exchanger 21 is located outdoors for heat exchange with outdoor air, and the second heat exchanger 22 is located indoors for heat exchange with indoor air. When indoor cooling is required, the specific operating mode is selected based on the outdoor environmental conditions and heat demand. When the outdoor environment is extremely hot and the cooling demand is high, the thermoacoustic engine 1 and compressor 7 start operating, and the throttling element 9 opens to a certain degree. On one hand, the thermoacoustic engine 1 utilizes the thermoacoustic effect to generate heat in the hot-end heat exchanger 11 and generate cooling in the first cold-end heat exchanger 12 and the second cold-end heat exchanger 13. Through heat exchange between the first refrigerant and the hot-end heat exchanger 11, the heat from the hot-end heat exchanger 11 is transferred to the first heat exchanger 21, thereby dissipating heat through heat exchange between the first heat exchanger 21 and the outdoor environment. On the other hand, the heat released by the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 7 first exchanges heat with the cooling capacity in the first cold-end heat exchanger 12. After heat exchange, the temperature of the refrigerant drops significantly and it becomes liquid. Then, after the refrigerant passes through the throttling element 9 to cool and depressurize, it becomes a low-temperature, low-pressure gas-liquid mixture and enters the second heat exchanger 22 to exchange heat with the indoor air. The indoor air temperature drops significantly, the temperature of the refrigerant rises after heat exchange, and it becomes gaseous and returns to the compressor 7. When the outdoor environment is high-temperature and the cooling demand is low, the thermoacoustic motor 1 operates alone, and the compressor 7 stops. The thermoacoustic motor 1 uses the thermoacoustic effect to generate heat in the hot-end heat exchanger 11 and generate cooling capacity in the first cold-end heat exchanger 12 and the second cold-end heat exchanger 13. Through the heat exchange between the first refrigerant and the hot-end heat exchanger 11, the heat of the hot-end heat exchanger 11 is transferred to the first heat exchanger 21, thereby dissipating heat through heat exchange between the first heat exchanger 21 and the outdoor environment. By directly or indirectly exchanging heat with the second cold-end heat exchanger 13 through the second heat exchanger 22, the cooling capacity of the second cold-end heat exchanger 13 can be transferred to the second heat exchanger 22. The cooling capacity is then exchanged with the indoor air through the second heat exchanger 22 to achieve indoor cooling.

[0054] The air conditioning device of this application, by combining a thermoacoustic engine 1 with a traditional vapor compression cycle, can achieve a wider operating temperature range and expand the applicability of the device. Specifically, by setting a first cold-end heat exchanger 12 and a second cold-end heat exchanger 13 in the thermoacoustic engine 1, with the compressor 7 connected to the first cold-end heat exchanger 12, and the second heat exchanger 22 able to exchange heat with the second cold-end heat exchanger 13 and also obtain refrigerant heat, this configuration allows the thermoacoustic engine 1 to provide heat independently or by using the cascade of the thermoacoustic engine 1 and the compressor 7 in extreme environments, thereby improving its operating capability in extreme environments. Furthermore, since the heat transfer process of the thermoacoustic engine 1 is less affected by the ambient temperature, the air conditioning device of this application has a significant advantage in operating efficiency compared to a simple traditional air conditioner.

[0055] The following is combined with Figure 1 The first specific embodiment of the air conditioning device of this application will be described.

[0056] like Figure 1 As shown, in the first embodiment, the air conditioning device is used in a household and includes a thermoacoustic motor 1, a first heat exchanger 21, a second heat exchanger 22, a first pump body 61, a second pump body 62, a first fan 41, a second fan 42, a compressor 7, and a throttling element 9.

[0057] The specific form of the thermoacoustic machine 1 is not limited in this application. It can be a free piston Stirling thermoacoustic machine or a resonant tube thermoacoustic machine. The resonant tube thermoacoustic machine can further include a traveling wave thermoacoustic machine, a standing wave thermoacoustic machine, or a traveling-standing wave thermoacoustic machine.

[0058] Whether it's a free-piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine, their basic principle is as follows: The thermoacoustic engine 1 contains a cavity for storing compressible gases such as helium or nitrogen, and it also has a special acoustic structure. A piston driven by a driving device (such as a linear compressor or linear motor) moves at high speed and reciprocates to generate sound waves. When these sound waves propagate through the gas, a thermoacoustic effect is generated, causing gas molecules to undergo periodic compression and expansion. The special acoustic structure allows the sound waves to produce strong compression and expansion in specific regions. During the compression phase, collisions between gas molecules increase, converting kinetic energy into internal energy, leading to an increase in gas temperature. During the expansion phase, the gas does work, reducing internal energy and lowering temperature. The resonant tube or acoustic resonant cavity enhances the effect of the sound waves, and due to the reflection and superposition of the sound waves, relatively stable compression and expansion regions are formed in specific areas, thus creating cold and hot ends within the cavity. Furthermore, by installing heat exchangers at the cold and hot ends respectively, and a regenerator 14 between the two heat exchangers, the heat and cold energy can be extracted and utilized. Specifically, this application provides a hot-end heat exchanger 11 at the hot end and a first cold-end heat exchanger 12 and a second cold-end heat exchanger 13 at the cold end. The arrangement of the first cold-end heat exchanger 12 and the second cold-end heat exchanger 13 is not limited in this application; they can be arranged side-by-side along the direction of sound wave transmission, nested together in a direction perpendicular to the direction of sound wave transmission, or arranged intersectingly or alternately along the direction of sound wave transmission. In short, the goal is to ensure that the first cold-end heat exchanger 12 and the second cold-end heat exchanger 13 are reasonably arranged at the hot end of the cavity, allowing the medium inside the heat exchanger to exchange heat with the cold energy at the cold end.

[0059] The first heat exchanger 21 is an air-cooled heat exchanger, which is located outdoors and circulated with the hot-end heat exchanger 11 through the first refrigerant pipeline 53. A first fan 41 is installed corresponding to the first heat exchanger 21. When the first fan 41 starts, it draws outdoor air through the first heat exchanger 21, exchanging heat with the first refrigerant flowing through it. A first pump body 61 is installed in the first refrigerant pipeline 53. When the first pump body 61 starts, it drives the first refrigerant to circulate between the first heat exchanger 21 and the hot-end heat exchanger 11. Preferably, the first refrigerant is a refrigerant with a freezing point greater than or equal to 0°C, such as water.

[0060] The second heat exchanger 22 is installed indoors and includes a first heat exchange component 221 and a second heat exchange component 222 that are independent of each other. Both the first heat exchange component 221 and the second heat exchange component 222 are preferably air-cooled heat exchangers. They can be arranged side-by-side along the airflow direction, or side-by-side or top-bottom, etc., and their internal flow paths are independent and do not affect each other. The first heat exchange component 221 is installed on the first refrigerant pipeline 51 between the suction port of the compressor 7 and the throttling element 9. The second heat exchange component 222 is circulatedly connected to the second cold-end heat exchanger 13 through the second refrigerant pipeline 54. The second pump body 62 is installed on the second refrigerant pipeline 54. When the second pump body 62 is started, it drives the second refrigerant to circulate between the second heat exchange component 222 and the second cold-end heat exchanger 13. The second refrigerant pipeline 54 is filled with a second refrigerant; in this application, the second refrigerant is preferably water. The second fan 42 can act on the first heat exchange component 221 and the second heat exchange component 222 simultaneously. In other words, when the second fan 42 is started, it can drive the surrounding indoor air to flow through the first heat exchange component 221 and the second heat exchange component 222 simultaneously or sequentially.

[0061] The compressor 7, the first cold-end heat exchanger 12, the throttling element 9, and the first heat exchange component 221 are circulated together via the first refrigerant pipeline 51. Specifically, the discharge port of the compressor 7 is connected to one end of the first cold-end heat exchanger 12. Figure 1 The upper end shown is connected to the other end of the first cold-end heat exchanger 12. Figure 1 The lower end shown) and one end of the throttling element 9 ( Figure 1 The right end shown is connected, and the other end of the throttling element 9 ( Figure 1 The left end shown) and one end of the first heat exchange component 221 (shown) Figure 1 The lower end shown is connected, and the other end of the first heat exchange component 221 (shown below) is connected. Figure 1 The upper end (shown) is connected to the suction port of the compressor 7. Except for the first heat exchange component 221, which is located indoors, the compressor 7, throttling element 9, and thermoacoustic machine 1 are located outdoors. The throttling element 9 is preferably an electronic expansion valve.

[0062] The following is combined with Figure 1 The working principle of the air conditioning device according to the first embodiment of this application will be briefly introduced.

[0063] like Figure 1As shown, when the outdoor temperature is extremely high and a large amount of cooling is required, the thermoacoustic engine 1 and compressor 7 start operating, the throttling element 9 opens to a certain degree, and the first fan 41, second fan 42, and first pump body 61 start operating, while the second pump body 62 stops. On one hand, the thermoacoustic engine 1 utilizes the thermoacoustic effect to generate heat in the hot-end heat exchanger 11 and generate cooling in the first cold-end heat exchanger 12 and the second cold-end heat exchanger 13. The first pump body 61 drives the first refrigerant to circulate in the first cooling pipeline 53. When flowing through the hot-end heat exchanger 11, the first refrigerant absorbs the heat from the hot-end heat exchanger 11. When the first refrigerant flows through the first heat exchanger 21, it exchanges heat with the outdoor ambient air, thereby dissipating the heat to the outdoor environment through the first heat exchanger 21. On the other hand, the high-temperature, high-pressure gaseous refrigerant discharged from compressor 7 first passes through the first cold-end heat exchanger 12, absorbing the cooling capacity of the first cold-end heat exchanger 12. After heat exchange, the refrigerant cools down and becomes liquid. The liquid refrigerant then passes through the throttling element 9, where it is cooled and depressurized, becoming a low-temperature, low-pressure gas-liquid mixture. When this low-temperature, low-pressure gas-liquid mixture flows through the first heat exchange component 221, it exchanges heat with the indoor air, absorbing heat from the indoor air, thus lowering the indoor temperature and achieving indoor cooling. After absorbing heat, the refrigerant heats up and becomes gaseous, which then flows back to compressor 7.

[0064] When outdoor temperatures are high and cooling demand is low, thermoacoustic unit 1 operates independently, compressor 7 stops, and first fan 41, second fan 42, first pump body 61, and second pump body 62 start operation. Thermoacoustic unit 1 utilizes the thermoacoustic effect to generate heat in the hot-end heat exchanger 11 and cooling in the first cold-end heat exchanger 12 and second cold-end heat exchanger 13. First pump body 61 drives the first refrigerant to circulate in the first cooling pipeline 53. When flowing through the hot-end heat exchanger 11, the first refrigerant absorbs heat from the hot-end heat exchanger 11. When the first refrigerant flows through the first heat exchanger 21, it exchanges heat with the outdoor ambient air, thereby dissipating the heat to the outdoor environment through the first heat exchanger 21. Second pump body 62 drives the second refrigerant to circulate in the second cooling pipeline 54. When the second refrigerant flows through the second cold-end heat exchanger 13, it absorbs the cooling capacity of the second cold-end heat exchanger 13. When the second refrigerant flows through the second heat exchange component 222, the second refrigerant exchanges heat with the indoor air, the indoor air temperature drops, and the room is cooled.

[0065] The following is combined with Figures 2 to 6 The second embodiment of the air conditioning device of this application will be described.

[0066] like Figure 2As shown, based on the first embodiment, the air conditioning device in this embodiment adds a third heat exchanger 23, a valve body 31, a four-way valve 8, and a second refrigerant pipeline 52. Specifically, the third heat exchanger 23 is also an air-cooled heat exchanger, and the first heat exchanger 21 and the third heat exchanger 23 belong to the same heat exchanger. Their arrangement is not limited in this application; for example, they can be arranged side-by-side along the airflow direction, or side-by-side or top-and-bottom, etc., and their internal flow paths are independent and do not affect each other. The third heat exchanger 23 is installed on the second refrigerant pipeline 52, and the first end of the second refrigerant pipeline 52 ( Figure 2 The upper end shown is connected to one end of the first cold-end heat exchanger 12. Figure 2 On the first refrigerant line 51 between the upper end shown and the discharge port of the compressor 7, at the second end of the second refrigerant line 52 (shown at the upper end), Figure 2 The lower end shown is connected to the other end of the first cold-end heat exchanger 12. Figure 2 The first refrigerant pipe 51 between the lower end shown and the throttling element 9. The first fan 41 can act on the first heat exchanger 21 and the third heat exchanger 23 at the same time. In other words, when the first fan 41 is started, it can drive the outdoor ambient air to flow through the first heat exchanger 21 and the third heat exchanger 23 simultaneously or sequentially.

[0067] Valve body 31 is a three-way control valve, the first port of the three-way control valve ( Figure 2 (Middle left interface), second interface) Figure 2 (Middle and upper side interface) and third interface ( Figure 2 The right-side interface is connected to the throttling element 9, one end of the first cold-end heat exchanger 12, and one end of the third heat exchanger 23, respectively. The first interface of the three-way control valve can be selectively connected to the second or third interface to change the direction of refrigerant flow.

[0068] The four ports of the four-way valve 8 are respectively connected to the discharge port of the compressor 7, one end of the first cold-end heat exchanger 12, the throttling element 9, and the suction port of the compressor 7. More specifically, the four ports are respectively connected to the discharge port of the compressor 7, the branch ends of the first cold-end heat exchanger 12 and the third heat exchanger 23, one end of the first heat exchange component 221, and the suction port of the compressor 7. The branch ends of the first cold-end heat exchanger 12 and the third heat exchanger 23 refer to a connection point between the second refrigerant line 52 and the first refrigerant line 51.

[0069] The following is combined with Figures 3 to 6 The working principle of the second embodiment of the air conditioning device of this application will be introduced.

[0070] First refer to Figure 3When the outdoor temperature is extremely high and the user has a high cooling capacity requirement, the system operates in the ultra-high temperature, high cooling capacity cooling mode: at this time, thermoacoustic motor 1, compressor 7, first fan 41, second fan 42, and first pump 61 start running, second pump 62 stops, throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 3 Left interface) and second interface ( Figure 3 (Upper interface) Connected. During operation, the thermoacoustic machine 1 generates heat and cooling through the thermoacoustic effect. The first pump body 61 drives the first refrigerant to circulate between the hot-end heat exchanger 11 and the first heat exchanger 21. When the first refrigerant passes through the hot-end heat exchanger 11, it absorbs heat from the hot-end heat exchanger 11 and its temperature rises. When the first refrigerant continues to flow through the first heat exchanger 21, it exchanges heat with the outdoor ambient air, absorbs the cooling energy of the outdoor air and its temperature drops, and the corresponding outdoor air temperature rises. On the other hand, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 7 first passes through the first cold-end heat exchanger 12, absorbs the cooling energy of the first cold-end heat exchanger 12 and its temperature drops significantly to form a liquid refrigerant. The liquid refrigerant continues to flow through the throttling element 9 to further cool and depressurize, becoming a low-temperature and low-pressure gas-liquid mixed refrigerant. When the low-temperature and low-pressure refrigerant passes through the first heat exchange component 221, it exchanges heat with the indoor air, absorbs the heat of the indoor air and its temperature rises and vaporizes, thus lowering the indoor air temperature and achieving indoor cooling. The vaporized refrigerant then returns to compressor 7 to continue the cycle.

[0071] Next, refer to Figure 4 When the outdoor environment is hot and users have cooling needs, the system operates in high-temperature cooling mode: At this time, thermoacoustic unit 1, first fan 41, second fan 42, first pump 61, and second pump 62 start operation, while compressor 7 stops. During operation, thermoacoustic unit 1 generates heat and cooling through the thermoacoustic effect. First pump 61 drives the first refrigerant to circulate between hot-end heat exchanger 11 and first heat exchanger 21. When the first refrigerant passes through hot-end heat exchanger 11, it absorbs heat from the hot-end heat exchanger 11 and its temperature rises. As the first refrigerant continues to flow through first heat exchanger 21, it exchanges heat with the outdoor ambient air, absorbing the cooling energy of the outdoor air and its temperature drops, correspondingly increasing the outdoor air temperature. Second pump 62 drives the second refrigerant to circulate between second cold-end heat exchanger 13 and second heat exchange component 222. When the second refrigerant passes through second cold-end heat exchanger 13, it absorbs the cooling energy of second cold-end heat exchanger 13 and its temperature drops. When the second refrigerant continues to flow through the second heat exchange component 222, it exchanges heat with the indoor air, absorbs the heat from the indoor air and rises in temperature, and the corresponding indoor air temperature decreases, thus achieving cooling of the room.

[0072] Next, refer to Figure 5When the outdoor ambient temperature is high and users have cooling needs, the system operates in normal cooling mode: at this time, compressor 7, first fan 41, and second fan 42 start running, thermoacoustic motor 1, first pump body 61, and second pump body 62 stop, throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 5 Left interface) and third interface ( Figure 5 (Right-side interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from compressor 7 first passes through the third heat exchanger 23, where it exchanges heat with the outdoor environment. After heat exchange, the refrigerant cools down to a liquid state. The liquid refrigerant continues to flow through the throttling element 9, where it cools and depressurizes, becoming a low-temperature, low-pressure gas-liquid mixture. When the low-temperature, low-pressure refrigerant passes through the first heat exchange component 221, it exchanges heat with the indoor air, absorbing heat from the indoor air and vaporizing. As a result, the indoor air temperature decreases, achieving cooling of the room. The vaporized refrigerant returns to compressor 7 to continue the cycle.

[0073] Finally refer to Figure 6 When a user has a heating demand, the system operates in heating mode: at this time, the four-way valve 8 reverses, the compressor 7, the first fan 41, and the second fan 42 start running, the thermoelectric machine 1, the first pump body 61, and the second pump body 62 stop, the throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 6 Left interface) and third interface ( Figure 6 (Right-side interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from compressor 7 first passes through the first heat exchange component 221, where it exchanges heat with the indoor air, absorbing the cold air and cooling down to liquefy. Consequently, the indoor air temperature rises, achieving heating for the room. The refrigerant cools down to become liquid refrigerant. The liquid refrigerant continues to flow through the throttling element 9, where it cools and depressurizes to become a low-temperature, low-pressure gas-liquid mixture. When the low-temperature, low-pressure refrigerant passes through the third heat exchanger 23, it exchanges heat with the outdoor ambient air, absorbing heat from the outdoor environment and rising to vaporize. The vaporized refrigerant then returns to compressor 7 to continue the cycle.

[0074] By incorporating a third heat exchanger 23, the steam compression cycle can operate independently without activating the thermoelectric generator 1, thereby enhancing the device's applicability and ensuring product operating efficiency. Since the first heat exchanger 21 and the third heat exchanger 23 belong to the same heat exchanger, a high degree of integration and functional reuse can be achieved, reducing the device's structural complexity and increasing its integration level. The inclusion of a four-way valve 8 enables multi-mode operation of the device, further expanding its application scenarios.

[0075] It should be noted that although the second embodiment described above is based on four specific operating modes of the air conditioning device, this is merely illustrative and not intended to limit the application scenarios of this application. Without departing from the principles of this application, those skilled in the art can combine the specific structure of the air conditioning device of this application to create more operating modes. For example, in an ultra-high temperature environment, the thermoacoustic engine 1, compressor 7, first pump body 61, and second pump body 62 can be started simultaneously. At this time, part of the cooling capacity of the cold end of the thermoacoustic engine 1 is replaced to the refrigerant through the first cold end heat exchanger 12, and another part of the cooling capacity is replaced to the second refrigerant through the second cooling pipeline 54. At this time, the cooling capacity can be superimposed through the first heat exchange component 221 and the second heat exchange component 222.

[0076] The following is combined with Figure 7 The third embodiment of the air conditioning device of this application will be briefly described below.

[0077] like Figure 7 As shown, based on the second embodiment, the air conditioning device of this embodiment adds an intermediate heat exchanger 24, a bypass pipe 56, and a valve section 32, and adjusts the arrangement of the second heat exchanger 22. Specifically, the intermediate heat exchanger 24 is a plate heat exchanger, which has a first heat exchange flow path and a second heat exchange flow path that can exchange heat with each other. The first heat exchange flow path is located in the first refrigerant pipe 51, and the second heat exchange flow path is located in the second refrigerant pipe 54. The two ends of the first heat exchange flow path are respectively connected to the suction port of the compressor 7 and the throttling element 9, more specifically, to one interface of the four-way valve 8 and the throttling element 9. The second heat exchanger 22 is an air-cooled heat exchanger. The second heat exchanger 22, the second heat exchange flow path, and the second cold-end heat exchanger 13 are arranged sequentially on the second refrigerant pipe 54 along the flow direction of the second refrigerant. The second fan 42 is arranged corresponding to the second heat exchanger 22. When the second fan 42 is started, it can drive indoor air to flow through the second fan 42.

[0078] The two ends of the bypass pipe 56 are respectively connected to the two ends of the second cold-end heat exchanger 13. Specifically, one end of the bypass pipe 56 ( Figure 7 The upper end shown is connected to one end of the second cold-end heat exchanger 13. Figure 7 On the second cooling pipe 54 between the upper end shown and the second pump body 62, the other end of the bypass pipe 56 (shown at the upper end) Figure 7 The lower end shown is connected to the other end of the second cold-end heat exchanger 13. Figure 7 The second cooling pipe 54 is located between the lower end shown and one end of the second heat exchange flow path.

[0079] The valve section 32 is configured to selectively control the flow of the second refrigerant through the bypass line 56 or the second cold-end heat exchanger 13. Specifically, the valve section 32 in this embodiment includes two three-way control valves. The three ports of one three-way control valve are respectively connected to one end of the second cold-end heat exchanger 13, one end of the bypass line 56, and one end of the second heat exchange flow path. The three ports of the other three-way control valve are respectively connected to the other end of the second cold-end heat exchanger 13, the other end of the bypass line 56, and the second pump body 62. The two three-way control valves are configured to selectively control the flow of the second refrigerant through the bypass line 56 or the second cold-end heat exchanger 13. In other words, each three-way control valve can achieve individual connection between at least any two ports.

[0080] Thus, by setting up the intermediate heat exchanger 24, the heat / cold energy of the vapor compression cycle can be indirectly transferred to the second heat exchanger 22, reducing the structural complexity of the second heat exchanger 22. Furthermore, when using the intermediate heat exchanger 24 to transfer heat / cold energy, the flow direction of the second refrigerant can be controlled using the bypass pipe 56 and the valve section 32, allowing the second refrigerant to bypass the second cold-end heat exchanger 13 and circulate only between the intermediate heat exchanger 24 and the second heat exchanger 22, avoiding heat loss caused by the refrigerant flowing through the second cold-end heat exchanger 13. The specific working principle can be referred to in the second embodiment, which will not be elaborated further in this embodiment.

[0081] The following reference Figure 8 The fourth embodiment of the air conditioning device of this application will be briefly described.

[0082] like Figure 8 As shown, based on the second embodiment, the air conditioning device of this embodiment adds an intermediate heat exchanger 24, a third cooling pipe 55, a first valve 33, and a second valve 34, and adjusts the arrangement of the second heat exchanger 22. Specifically, the intermediate heat exchanger 24 is a plate heat exchanger, which has a first heat exchange flow path and a second heat exchange flow path that can exchange heat with each other. The first heat exchange flow path is located in the first refrigerant pipe 51, and the second heat exchange flow path is located in the third cooling pipe 55. The two ends of the first heat exchange flow path are respectively connected to the suction port of the compressor 7 and the throttling element 9, more specifically, to one interface of the four-way valve 8 and the throttling element 9. The second heat exchanger 22 is an air-cooled heat exchanger. The second cold end heat exchanger 13 and the second heat exchanger 22 are circulatedly connected through the second cooling pipe 54, and the second pump body 62 is located on the second cooling pipe 54. One end of the third cooling pipe 55 ( Figure 8 The upper end shown is connected to one end of the second pump body 62 and the second cold end heat exchanger 13. Figure 8 On the second cooling pipe 54 between the upper end shown), and the other end of the third cooling pipe 55 (shown at the upper end) Figure 8 The lower end shown is connected to one end of the second heat exchanger 22. Figure 8 The lower end shown) and the other end of the second cold end heat exchanger 13 (shown below) Figure 8 The second refrigerant is filled in the second refrigerant pipe 54 between the lower end shown and the third refrigerant pipe 55. The second fan 42 is provided corresponding to the second heat exchanger 22. When the second fan 42 is started, it can drive indoor air to flow through the second fan 42.

[0083] Both the first valve 33 and the second valve 34 are solenoid valves. The first valve 33 is located at one end of the second cold-end heat exchanger 13. Figure 8 The lower end shown) and one end of the third cooling pipe 55 ( Figure 8 The second valve 34 is located on the second cooling pipeline 54 between the lower end shown in the figure and the third cooling pipeline 55.

[0084] In this way, the heat / coldness of the refrigerant can be indirectly transferred to the second heat exchanger 22 using the intermediate heat exchanger 24. Furthermore, the flow direction of the second refrigerant can be adjusted by opening and closing the first valve 33 and the second valve 34. For example, when the thermoacoustic machine 1 is running alone, opening the first valve 33 and closing the second valve 34 allows the second refrigerant to circulate between the second heat exchanger 22 and the second cold-end heat exchanger 13. When the compressor 7 is running alone, opening the second valve 34 and closing the first valve 33 allows the second refrigerant to circulate between the second heat exchanger 22 and the second heat exchange flow path. The specific working principle can be referred to in the second embodiment, and will not be elaborated further in this embodiment.

[0085] The following is combined with Figure 9 and Figure 10 The fifth embodiment of the air conditioning device of this application will be briefly described.

[0086] like Figure 9 and Figure 10 As shown, based on the first embodiment, this embodiment adjusts the structure of the thermoacoustic machine 1. Specifically, the thermoacoustic machine 1 includes two thermoacoustic units facing each other, which are disposed within the same housing 15. Each thermoacoustic unit includes a compression section 16 and a heat exchange section. The compression section 16 is a linear compressor, which includes electromagnetic components, a power piston, a spring, an exhaust fan, etc. The heat exchange section includes a first cold-end heat exchanger 12, a second cold-end heat exchanger 13, a regenerator 14, and a hot-end heat exchanger 11. An expansion chamber and a compression chamber are formed within the housing 15. The first cold-end heat exchanger 12 and the second cold-end heat exchanger 13 are located in the expansion chamber, the hot-end heat exchanger 11 is located in the compression chamber, and the regenerator 14 is located between the hot-end heat exchanger 11 and the two cold-end heat exchangers. Further, as... Figure 10As shown, in this application, the hot ends of the two thermoacoustic units are far apart, while the cold ends are opposite each other (i.e., the two cold ends are close to each other and facing each other), and a partition 17 is provided between the two cold ends to separate the two thermoacoustic units. The first cold end heat exchanger 12 and the second cold end heat exchanger 13 are disposed in the expansion cavity in a nested manner, wherein the first cold end heat exchanger 12 is located inside the second cold end heat exchanger 13. (Return to Reference) Figure 9 The first heat exchanger 21 exchanges heat with the two hot-end heat exchangers 11 through a first refrigerant. The discharge port of the compressor 7 is connected to the first end of at least one first cold-end heat exchanger 12. One end of the throttling element 9 is connected to the second end of at least one first cold-end heat exchanger 12. The second heat exchanger 22 exchanges heat directly or indirectly with the two second cold-end heat exchangers 13. Specifically, the inlet of the first heat exchanger 21 ( Figure 9 The upper port shown is simultaneously connected to one end of both hot-end heat exchangers 11. Figure 9 The upper end shown is connected to the outlet of the first heat exchanger 21. Figure 9 The lower port shown is simultaneously connected to the other end of the two hot-end heat exchangers 11. Figure 9 The two hot-end heat exchangers 11 are connected to the lower end of the compressor 7, forming a parallel structure similar to that in electrical circuits. The exhaust port of the compressor 7 is simultaneously connected to the first end of the two first cold-end heat exchangers 12. Figure 9 The upper end shown is connected, and one end of the throttling element 9 is simultaneously connected to the second end of the two first cold-end heat exchangers 12. Figure 9 The lower end of the second pump body 62 is connected to the first end of the two first cold-end heat exchangers 12, forming a structure similar to a "parallel" connection in electrical circuitry. The outlet of the second pump body 62 is simultaneously connected to the first end of the two second cold-end heat exchangers 13. Figure 9 The lower end shown is connected, and one end of the second heat exchange component 222 ( Figure 9 The upper end shown) is simultaneously connected to the second end of the two second cold end heat exchangers 13 (as shown above). Figure 9 The upper end is connected, and at this time the two second cold end heat exchangers 13 form a structure similar to the "parallel" structure in electricity.

[0087] Thus, by setting two thermoacoustic units in thermoacoustic unit 1, not only can the cooling and heating capacity be doubled, but also the problem of high vibration and noise caused by a single thermoacoustic unit can be overcome by placing the two thermoacoustic units opposite each other. Placing the two thermoacoustic units within the same housing 15 and separating the heat exchange sections by a partition 17 simplifies the manufacturing process, eliminating the need for specific design of the interior of housing 15. The working principle of the above embodiment can be referred to the first embodiment, and will not be repeated here.

[0088] It should be noted that the above preferred embodiments are merely illustrative of the principles of this application and are not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can adjust the above settings to make this application applicable to more specific application scenarios.

[0089] For example, in an alternative embodiment, although all the above embodiments are described with the example of the first heat exchanger 21 being located outdoors and the second heat exchanger 22 being located indoors, the locations of the first heat exchanger 21 and the second heat exchanger 22 are not limited to this. Those skilled in the art can choose the locations of the first heat exchanger 21 and the second heat exchanger 22 based on the specific application scenario. For example, in all the above embodiments, the first heat exchanger 21 can also be located indoors and the second heat exchanger 22 can be located outdoors. In this case, the air conditioning device can be used for low-temperature heating scenarios.

[0090] For example, in another alternative embodiment, although the above embodiment is described with the first heat exchanger 21, the second heat exchanger 22, and the third heat exchanger 23 all being air-cooled heat exchangers as an example, the specific form of the heat exchangers is not unique, and those skilled in the art can adjust them. For example, at least one of the heat exchangers can also be replaced with a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet, and is configured to circulate with a liquid-cooling source through the liquid-cooled inlet and outlet. For example, the liquid-cooled heat exchanger can exchange heat with groundwater or cooling water in a cold water tank. Moreover, when the heat exchanger is a liquid-cooled heat exchanger, the corresponding fan can be omitted.

[0091] For example, in another alternative embodiment, the arrangement of the first heat exchanger 21 and the third heat exchanger 23 belonging to the same heat exchanger in the above-mentioned partial embodiments is only a preferred option. In other embodiments, those skilled in the art can also separate and set them independently, for example, setting two outdoor heat exchangers, each of which operates independently and is equipped with a fan or water-cooling components, etc. This replacement of the arrangement does not deviate from the principle of this application.

[0092] For example, in another alternative embodiment, although the second heat exchanger 22 is described in conjunction with its use for indoor cooling or heating, the specific function of the second heat exchanger 22 is not fixed. Those skilled in the art can make selections based on specific scenarios. For example, the second heat exchanger 22 can also be a coil heat exchanger, which is installed in a freezer for freezing items.

[0093] For example, in another alternative embodiment, the arrangement of the first heat exchanger 21 being circulatedly connected to the hot-end heat exchanger 11 via the first refrigerant pipe 53 is merely exemplary. Those skilled in the art can adjust it to suit more specific application scenarios. For instance, the first heat exchanger 21 may be a heat pipe heat exchanger, with its condenser end exchanging heat with the outdoor environment, such as through a fan. The evaporator end of the heat pipe heat exchanger exchanges heat with the hot-end heat exchanger 11, such as by contacting the evaporator end with the hot-end heat exchanger 11. A first refrigerant is filled inside the heat pipe heat exchanger; this first refrigerant can be water, alcohol, ammonia solution, etc. By using a heat pipe heat exchanger for the first heat exchanger 21, the heat exchange effect can be improved, and the first pump body 61 can be omitted, reducing system setup costs.

[0094] Alternatively, a loop heat pipe can be formed between the first heat exchanger 21 and the hot-end heat exchanger 11 via a pipeline, with the first refrigerant filling the loop heat pipe. In this case, the condenser of the loop heat pipe is the first heat exchanger 21, where the gaseous first refrigerant exchanges heat with the outdoor air and cools down to liquefy. A capillary structure needs to be installed inside the loop heat pipe to provide a pressure drop. The evaporator of the loop heat pipe is the hot-end heat exchanger 11, where the liquid first refrigerant absorbs heat and heats up to vaporize. The first refrigerant, which can be an ammonia solution, Freon, water, etc., fills the loop heat pipe. The loop heat pipe formed between the first heat exchanger 21 and the hot-end heat exchanger 11 is easy to install, eliminates the need for the first pump body 61, and is suitable for long-distance refrigerant transport.

[0095] For example, in another alternative implementation, the above-described partial implementation is illustrated by using a three-way control valve to change the flow direction of the refrigerant or the first refrigerant. However, this configuration is merely exemplary. In other implementations, the three-way control valve can be replaced with two on / off valves (such as solenoid valves), which can also achieve the same flow direction adjustment. Alternatively, when setting two three-way control valves, one of them can be omitted without affecting the implementation of the solution.

[0096] For example, in another alternative embodiment, although the above embodiments are described with water as the first refrigerant, the specific choice of the first refrigerant is not fixed, and those skilled in the art can choose it based on the specific application scenario. Similarly, the specific form of the second refrigerant is not fixed either, and those skilled in the art can choose other refrigerants to replace it.

[0097] For example, in another alternative embodiment, although the intermediate heat exchanger 24 in the above-described partial embodiment is introduced in conjunction with a plate heat exchanger, its specific implementation is not limited to this. In other embodiments, the intermediate heat exchanger 24 can also be a shell-and-tube heat exchanger or a coaxial heat exchanger, etc.

[0098] For example, in another alternative embodiment, although some of the above embodiments are described with the example of having a four-way valve 8, this is only a preferred embodiment. With the four-way valve 8 provided, simple switching between different modes can be achieved. Of course, those skilled in the art can omit the four-way valve 8.

[0099] For example, in another alternative embodiment, although the third embodiment described above is illustrated with an example of having a bypass pipe 56 and a valve section 32, the bypass pipe 56 is not mandatory in this embodiment. Those skilled in the art can choose whether to include the bypass pipe 56 based on the specific application scenario. For example, in other embodiments, the bypass pipe 56 can be omitted. Furthermore, the valve section 32 is illustrated with an example of two three-way control valves, but this is not intended to limit the scope of protection of this application. Those skilled in the art can adjust the specific arrangement of the valve section 32, such as adjusting it to an on / off valve group or only providing one three-way control valve.

[0100] For example, in another alternative embodiment, although the fourth embodiment described above is based on the example of setting the first valve 33 and the second valve 34, the specific implementation of the valves is not unique. Those skilled in the art can adjust them, as long as the adjusted technical solution can achieve control of the flow direction of the refrigerant. For example, the combination of the first valve 33 and the second valve 34 can also be replaced by a three-way control valve, etc. In addition, the first valve 33 and the second valve 34 can also be omitted.

[0101] For example, in another alternative embodiment, in addition to direct heat exchange via the first cooling pipe 53, indirect heat exchange can also be used between the second heat exchanger 22 / second heat exchange component 222 and the second cold-end heat exchanger 13. For instance, an intermediate pipe can be added between the second heat exchanger 22 and the second cold-end heat exchanger 13 to achieve indirect heat exchange. By incorporating an intermediate circulation pipeline, an indirect heat exchanger, and a third pump, the indirect heat exchanger has two flow paths that exchange heat with each other. One flow path circulates and exchanges heat with the second cold-end heat exchanger 13 through the intermediate circulation pipeline, and the third pump is located on the intermediate circulation pipeline. The other flow path circulates and connects with the second heat exchanger 22 through the second cooling pipeline 54. Driven by the second pump 62, circulatory heat exchange is achieved. In this way, the cooling capacity of the second cold-end heat exchanger 13 is transferred to the second heat exchanger 22 through the intermediate circulation pipeline, the indirect heat exchanger, and the second cooling pipeline 54, realizing indirect heat exchange between the second cold-end heat exchanger 13 and the second heat exchanger 22. By incorporating an indirect heat exchanger, the heat exchanger design of the thermoacoustic machine 1 can be made more compact, and the selection of refrigerant types can be enriched.

[0102] For example, in another alternative embodiment, although the fifth embodiment described above is based on the example of two thermoacoustic units being arranged in the same housing 15, this is only a preferred embodiment. In other embodiments, two separate thermoacoustic units 1 can also be arranged opposite each other.

[0103] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the fifth embodiment above are separated by a partition 17, this is only one possible way. In another embodiment, the two heat exchange sections can also be connected to each other. In this case, the two cold end heat exchangers are located in the same expansion chamber. In this way, the two heat exchange sections are connected to each other, the material cost is low, and the integrated design has higher reliability and better heat exchange effect.

[0104] For example, in another alternative implementation, although the fifth implementation described above is based on the example of two cold ends facing each other, this is only one possible implementation. The specific arrangement depends on the specific form of the heat exchange unit. For example, when the hot end heat exchanger 11 is located at the outermost edge of the thermoacoustic unit, the two hot end heat exchangers 11 can also be arranged to face each other.

[0105] For example, in another alternative embodiment, the specific form of the compression unit 16 is not limited in this application. In addition to a linear compressor, it can be any other type of compressor, such as a crank-connecting rod compressor.

[0106] For example, in another alternative embodiment, although the fifth embodiment described above is illustrated by setting the two hot-end heat exchangers 11, the two first cold-end heat exchangers 12, and the two second cold-end heat exchangers 13 in a "parallel" manner, this is only used to illustrate the principle of this application and is not intended to limit the scope of protection of this application. Those skilled in the art will understand that in other embodiments, the connection method of the two hot-end heat exchangers 11, the two first cold-end heat exchangers 12, or the two second cold-end heat exchangers 13 can also be changed so that this application can be applied to more specific application scenarios. For example, the two hot-end heat exchangers 11, the two first cold-end heat exchangers 12, and the two second cold-end heat exchangers 13 are connected in series. That is, the first refrigerant passes through the two hot-end heat exchangers 11 before exchanging heat with the first heat exchanger 21. The refrigerant discharged from the compressor 7 passes through the two first cold-end heat exchangers 12 before entering the throttling element 9. The second refrigerant discharged from the second pump body 62 passes through the two second cold-end heat exchangers 13 before entering the second heat exchange component 222.

[0107] For example, in another alternative embodiment, although the above embodiments are described in conjunction with a household air conditioning device, this is not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can apply this application to other application scenarios. For example, the air conditioning device of this application is also suitable for application scenarios such as commercial air conditioning.

[0108] Of course, the alternative implementation methods described above, as well as the alternative implementation methods and preferred implementation methods, can be used in combination to create new implementation methods suitable for more specific application scenarios. For example, the thermoacoustic machine 1 in the fifth implementation method can also be applied to the second, third, and fourth implementation methods.

[0109] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0110] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An air conditioning device, characterized in that, The air conditioning device includes a thermoacoustic engine, a compressor, a first heat exchanger, a second heat exchanger, and a throttling element. The thermoacoustic machine includes a hot-end heat exchanger, a first cold-end heat exchanger, and a second cold-end heat exchanger. The first heat exchanger and the hot-end heat exchanger exchange heat through a first refrigerant. The compressor is circulatedly connected to the first cold-end heat exchanger through a first refrigerant pipeline. The throttling element is disposed on the first refrigerant pipeline and its two ends are respectively connected to the suction port of the compressor and one end of the first cold-end heat exchanger. The second heat exchanger is configured to exchange heat directly or indirectly with the second cold-end heat exchanger and can also directly or indirectly obtain heat from the refrigerant between the throttling element and the suction port of the compressor.

2. The air conditioning device according to claim 1, characterized in that, The first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.

3. The air conditioning device according to claim 1, characterized in that, The first heat exchanger is circulatedly connected to the hot-end heat exchanger via a first cooling pipeline. The air conditioning device further includes a first pump body, which is disposed in the first cooling pipeline, and a first refrigerant is filled in the first cooling pipeline; or The first heat exchanger is a heat pipe heat exchanger, wherein the evaporation end of the heat pipe heat exchanger exchanges heat with the hot end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or The first heat exchanger and the hot-end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe.

4. The air conditioning device according to claim 1, characterized in that, The air conditioning device further includes a third heat exchanger and a second refrigerant line. The third heat exchanger is disposed on the second refrigerant line. One end of the second refrigerant line is connected to the refrigerant line between one end of the first cold end heat exchanger and the exhaust port of the compressor. The second end of the second refrigerant line is connected to the refrigerant line between the other end of the first cold end heat exchanger and the throttling element. The air conditioning device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the first cold-end heat exchanger or the third heat exchanger.

5. The air conditioning device according to claim 4, characterized in that, At least one of the first heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or The first heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger.

6. The air conditioning device according to claim 4, characterized in that, The air conditioning device also includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, one end of the first cold end heat exchanger, the throttling element and the intake port of the compressor.

7. The air conditioning device according to any one of claims 1-6, characterized in that, The second heat exchanger includes a first heat exchange component and a second heat exchange component that are independent of each other. The first heat exchange component is disposed on a first refrigerant pipeline between the throttling element and the suction port of the compressor. The second heat exchange component is circulatedly connected to the second cold end heat exchanger through a second refrigerant pipeline. The air conditioning device also includes a second pump body, which is disposed on the second refrigerant pipeline and is filled with a second refrigerant.

8. The air conditioning device according to any one of claims 1-6, characterized in that, The air conditioning device further includes an intermediate heat exchanger, which has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's suction port and the throttling element. The second heat exchanger, the second heat exchange flow path, and the second cold-end heat exchanger are circulated and connected through a second cooling pipeline. The air conditioning device further includes a second pump body, which is disposed in the second cooling pipeline and filled with a second refrigerant.

9. The air conditioning device according to claim 8, characterized in that, The air conditioning device further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second cold end heat exchanger. The air conditioning device also includes a valve, which is disposed on the second refrigerant pipeline and is configured to selectively control the flow of the second refrigerant through the bypass pipeline or the second cold end heat exchanger.

10. The air conditioning device according to any one of claims 1-6, characterized in that, The second heat exchanger is circulated with the second cold-end heat exchanger through a second refrigerant pipeline. The air conditioning device also includes an intermediate heat exchanger, a second pump body, and a third refrigerant pipeline. The second pump body is disposed in the second refrigerant pipeline. The intermediate heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline, and the second heat exchange flow path is disposed in the third refrigerant pipeline. One end of the third refrigerant pipeline is connected to the second refrigerant pipeline between one end of the second cold-end heat exchanger and one end of the second heat exchanger. The other end of the third refrigerant pipeline is connected to the second refrigerant pipeline between the other end of the second cold-end heat exchanger and the second pump body. The second and third refrigerant pipelines are filled with a second refrigerant.

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