Thermoacoustic heat pump device

Abstract

The present application relates to the technical field of heat pump, in particular to a thermoacoustic heat pump device. The present application aims to solve the problem of efficiency reduction of traditional vapor compression heat pump at low temperature. For this purpose, the thermoacoustic heat pump device of the present application comprises: a thermoacoustic engine, the thermoacoustic engine comprising a hot-end heat exchanger and a cold-end heat exchanger; a compressor, the exhaust port of the compressor being in communication with the first end of the cold-end heat exchanger; a first heat exchanger, the first end of the first heat exchanger being in communication with the suction port of the compressor; a throttling element, the two ends of the throttling element being in communication with the second end of the cold-end heat exchanger and the second end of the first heat exchanger respectively; and a second heat exchanger, the second heat exchanger being in direct or indirect heat exchange with the hot-end heat exchanger through a first cold carrier. By connecting the exhaust port of the compressor with the cold-end heat exchanger, the combination of the thermoacoustic engine and the vapor compression heat pump can be realized, and the working efficiency of the thermoacoustic heat pump device at low temperature can be improved.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and more specifically to a thermoacoustic heat pump device. Background Technology

[0002] A heat pump is a device that transfers heat energy from a low-grade heat source to a high-grade heat source, and it is a new energy technology that has attracted much attention worldwide. Heat pumps typically extract low-grade heat energy from the air, water, or soil in nature, use electricity to perform work, and then provide people with usable high-grade heat energy.

[0003] In traditional vapor compression heat pumps, as the ambient temperature decreases, the evaporation pressure of the system drops, which not only reduces heating capacity and efficiency, but can also cause the compressor's pressure ratio and exhaust temperature to exceed the limit, making the system unable to work.

[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, to solve the problem of reduced efficiency of traditional vapor compression heat pumps at low temperatures, this application provides a thermoacoustic heat pump device, the thermoacoustic heat pump device comprising:

[0006] A thermoacoustic machine, the thermoacoustic machine comprising a hot-end heat exchanger and a cold-end heat exchanger;

[0007] The compressor, wherein the exhaust port of the compressor is connected to the first end of the cold end heat exchanger;

[0008] The first heat exchanger has its first end connected to the air intake of the compressor.

[0009] A throttling element, the two ends of which are respectively connected to the second end of the cold end heat exchanger and the second end of the first heat exchanger;

[0010] The second heat exchanger exchanges heat directly or indirectly with the hot-end heat exchanger through the first refrigerant.

[0011] The thermoacoustic heat pump device of this application combines a thermoacoustic engine with a vapor compression heat pump by connecting the compressor's exhaust port to a cold-end heat exchanger, thereby improving the device's efficiency at low temperatures. Specifically, by incorporating a thermoacoustic engine, heat can be transferred from the cold-end to the hot-end heat exchanger using the thermoacoustic effect. The cooling and heating generated during the operation of the thermoacoustic engine are then used for vapor compression cycling and the second heat exchanger, respectively. Furthermore, since the heat transfer process is less affected by ambient temperature, the thermoacoustic heat pump device of this application has a significant advantage in operating efficiency compared to traditional vapor compression.

[0012] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the second heat exchanger is circulatedly connected to the hot end heat exchanger through the first cooling pipeline, and the thermoacoustic heat pump 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.

[0013] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the second 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

[0014] The second 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.

[0015] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes a third heat exchanger, the first end of the third heat exchanger being connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the second end of the third heat exchanger being connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger.

[0016] The thermoacoustic heat pump device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the cold-end heat exchanger or the third heat exchanger.

[0017] By setting up a third heat exchanger, the steam compression cycle can operate independently, improving the applicability of the device and ensuring its operating efficiency.

[0018] In the preferred embodiment of the above-described thermoacoustic heat pump device, at least one of the second heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or

[0019] The second heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger.

[0020] By having the second 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.

[0021] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes an intermediate heat exchanger. The intermediate heat exchanger 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 disposed in the first cooling pipeline. One end of the second heat exchange flow path is connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor. The other end of the second heat exchange flow path is connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger.

[0022] The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path.

[0023] By setting up an intermediate heat exchanger, the heat from the steam compression cycle can be transferred to the second heat exchanger, thereby enabling the steam compression cycle to operate independently and expanding the applicability of the device.

[0024] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the hot end heat exchanger. The thermoacoustic heat pump device also includes a valve, which is configured to selectively control the flow of the first refrigerant through the bypass pipeline or the hot 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 hot-end heat exchanger when the vapor compression cycle operates independently, thereby improving the operating efficiency of the unit.

[0026] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes an intermediate heat exchanger. The intermediate heat exchanger has a first heat exchange flow path and a second heat exchange flow path that can exchange heat with each other. One end of the first heat exchange flow path is connected to a first cooling pipe between one end of the second heat exchanger and the hot end heat exchanger. The other end of the first heat exchange flow path is connected to a first cooling pipe between the first pump body and the other end of the hot end heat exchanger. The first end of the second heat exchange flow path is connected to a refrigerant pipe between the first end of the cold end heat exchanger and the exhaust port of the compressor. The other end of the second heat exchange flow path is connected to a refrigerant pipe between the throttling element and the second end of the cold end heat exchanger.

[0027] The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path.

[0028] By setting up an intermediate heat exchanger, the heat from the steam compression cycle can be transferred to the second heat exchanger, thereby enabling the steam compression cycle to operate independently and expanding the applicability of the device.

[0029] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes a first valve and a second valve. The first valve is disposed on a first cooling pipeline between one end of the hot end heat exchanger and one end of the second cooling pipeline, and the second valve is disposed on the second cooling pipeline.

[0030] By setting the first valve and the second valve, the flow direction of the refrigerant can be controlled, thus avoiding heat waste.

[0031] In the preferred embodiment of the above-mentioned thermoacoustic heat pump 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, and a cold-end heat exchanger. The exhaust port of the compressor is connected to the first end of at least one of the cold-end heat exchangers. One end of the throttling element is connected to the second end of at least one of the cold-end heat exchangers. The second heat exchanger exchanges heat with the two hot-end heat exchangers through a first refrigerant.

[0032] 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.

[0033] In the preferred embodiment of the above-mentioned thermoacoustic heat pump 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

[0034] The two cold-end heat exchangers are positioned opposite each other.

[0035] 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.

[0036] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the first heat exchanger is an outdoor heat exchanger, the second heat exchanger is an indoor heat exchanger, and the freezing point of the first refrigerant is greater than or equal to 0°C.

[0037] In the preferred embodiment of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, the first end of the cold end heat exchanger, the first end of the first heat exchanger, and the suction port of the compressor.

[0038] By setting a four-way valve, different modes of the thermoacoustic heat pump device can be switched, enabling the device to operate in multiple modes and further improving its applicability. Solution 1. A thermoacoustic heat pump device, characterized in that the thermoacoustic heat pump device comprises: A thermoacoustic machine, the thermoacoustic machine comprising a hot-end heat exchanger and a cold-end heat exchanger; The compressor, wherein the exhaust port of the compressor is connected to the first end of the cold end heat exchanger; The first heat exchanger has its first end connected to the air intake of the compressor. A throttling element, the two ends of which are respectively connected to the second end of the cold end heat exchanger and the second end of the first heat exchanger; The second heat exchanger exchanges heat directly or indirectly with the hot-end heat exchanger through the first refrigerant. Scheme 2. The thermoacoustic heat pump device according to Scheme 1, characterized in that the second heat exchanger is circulatedly connected to the hot end heat exchanger through a first cooling pipeline, and the thermoacoustic heat pump device further includes a first pump body, the first pump body is disposed in the first cooling pipeline, and a first refrigerant is filled in the first cooling pipeline. Option 3. The thermoacoustic heat pump device according to Option 1, characterized in that the second heat exchanger is a heat pipe heat exchanger, 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 second 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. Scheme 4. The thermoacoustic heat pump device according to Scheme 1, characterized in that the thermoacoustic heat pump device further includes a third heat exchanger, the first end of the third heat exchanger is connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the second end of the third heat exchanger is connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger. The thermoacoustic heat pump device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the cold-end heat exchanger or the third heat exchanger. Option 5. The thermoacoustic heat pump device according to Option 4, characterized in that at least one of the second heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or The second heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger. Solution 6. The thermoacoustic heat pump device according to Solution 2, characterized in that the thermoacoustic heat pump 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 heat exchange between each other, the first heat exchange flow path being disposed in the first cooling pipeline, one end of the second heat exchange flow path being connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the other end of the second heat exchange flow path being connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger; The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path. Scheme 7. The thermoacoustic heat pump device according to Scheme 6, characterized in that the thermoacoustic heat pump device further includes a bypass pipeline, the two ends of the bypass pipeline being respectively connected to the two ends of the hot end heat exchanger, and the thermoacoustic heat pump device further includes a valve, the valve being configured to selectively control the flow of the first refrigerant through the bypass pipeline or the hot end heat exchanger. Scheme 8. The thermoacoustic heat pump device according to Scheme 2, characterized in that the thermoacoustic heat pump 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 heat exchange between each other, one end of the first heat exchange flow path being connected to a first cooling pipe between one end of the second heat exchanger and the hot end heat exchanger, the other end of the first heat exchange flow path being connected to a first cooling pipe between the first pump body and the other end of the hot end heat exchanger, the first end of the second heat exchange flow path being connected to a refrigerant pipe between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the other end of the second heat exchange flow path being connected to a refrigerant pipe between the throttling element and the second end of the cold end heat exchanger; The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path. Solution 9. The thermoacoustic heat pump device according to Solution 8, characterized in that the thermoacoustic heat pump device further includes a first valve and a second valve, the first valve being disposed on a first cooling pipeline between one end of the hot end heat exchanger and one end of the second cooling pipeline, and the second valve being disposed on the second cooling pipeline. Scheme 10. The thermoacoustic heat pump device according to Scheme 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 and a cold-end heat exchanger, the exhaust port of the compressor is connected to a first end of at least one of the cold-end heat exchangers, one end of the throttling element is connected to a second end of at least one of the cold-end heat exchangers, and the second heat exchanger exchanges heat with the two hot-end heat exchangers through a first refrigerant. Solution 11. The thermoacoustic heat pump device according to Solution 10, 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 cold-end heat exchangers are positioned opposite each other. Scheme 12. The thermoacoustic heat pump device according to Scheme 1, characterized in that the first heat exchanger is an outdoor heat exchanger, the second heat exchanger is an indoor heat exchanger, and the freezing point of the first refrigerant is greater than or equal to 0°C. Scheme 13. The thermoacoustic heat pump device according to any one of Schemes 1 to 12, characterized in that the thermoacoustic heat pump device further includes a four-way valve, wherein the four ports of the four-way valve are respectively connected to the exhaust port of the compressor, the first end of the cold end heat exchanger, the first end of the first heat exchanger and the suction port of the compressor. Attached Figure Description

[0039] The present application will now be described with reference to the accompanying drawings. In the drawings:

[0040] Figure 1 This is a system diagram of a first embodiment of the thermoacoustic heat pump device of this application;

[0041] Figure 2 This is a system diagram of a second embodiment of the thermoacoustic heat pump device of this application;

[0042] Figure 3 This is a system diagram of the first operating mode of a second embodiment of the thermoacoustic heat pump device of this application;

[0043] Figure 4 This is a system diagram of the second operating mode of a second embodiment of the thermoacoustic heat pump device of this application;

[0044] Figure 5 This is a system diagram of the third operating mode of the second embodiment of the thermoacoustic heat pump device of this application;

[0045] Figure 6 This is a system diagram of a third embodiment of the thermoacoustic heat pump device of this application;

[0046] Figure 7 This is a system diagram of the fourth embodiment of the thermoacoustic heat pump device of this application;

[0047] Figure 8 This is a system diagram of the fifth embodiment of the thermoacoustic heat pump device of this application;

[0048] Figure 9 This is a system diagram of the sixth embodiment of the thermoacoustic heat pump device of this application;

[0049] Figure 10 This is a schematic diagram of the thermoacoustic engine, representing the sixth embodiment of the thermoacoustic heat pump device of this application.

[0050] List of reference numerals

[0051] 1. Thermoacoustic unit; 11. Hot-end heat exchanger; 12. Cold-end heat exchanger; 13. Regenerator; 14. Shell; 15. Compressor section; 16. Baffle plate; 21. First heat exchanger; 22. Second heat exchanger; 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. Bypass line; 61. First pump body; 7. Compressor; 8. Four-way valve; 9. Throttling element. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] First refer to Figure 1 This paper provides a brief introduction to the thermoacoustic heat pump device of this application.

[0056] like Figure 1As shown, to address the efficiency reduction problem of traditional vapor compression heat pumps at low temperatures, the thermoacoustic heat pump device of this application includes a thermoacoustic engine 1, a first heat exchanger 21, a second heat exchanger 22, a compressor 7, and a throttling element 9. The thermoacoustic engine 1 includes a hot-end heat exchanger 11 and a cold-end heat exchanger 12. The exhaust port of the compressor 7 is connected to the first end of the cold-end heat exchanger 12, and the first end of the first heat exchanger 21 is connected to the suction port of the compressor 7. The two ends of the throttling element 9 are respectively connected to the second ends of the cold-end heat exchanger 12 and the second ends of the first heat exchanger 21. The second heat exchanger 22 exchanges heat directly or indirectly with the hot-end heat exchanger 11 through a first refrigerant.

[0057] 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 heating is required, the thermoacoustic engine 1 and the compressor 7 start operation, and the throttling element 9 opens to a certain degree. On one hand, the thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. 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 second heat exchanger 22, thereby achieving indoor heating through heat exchange between the second heat exchanger 22 and the indoor air. On the other hand, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 7 enters the cold end heat exchanger 12 and exchanges heat with the cold energy generated by the cold end heat exchanger 12. After heat exchange, the refrigerant becomes liquid. Then, after the refrigerant passes through the throttling element 9 to cool down and reduce pressure, it becomes a low-temperature and low-pressure gas-liquid mixture and enters the first heat exchanger 21 to exchange heat with the outdoor ambient air. After heat exchange, the refrigerant becomes gaseous and returns to the compressor 7.

[0058] The thermoacoustic heat pump device of this application combines the thermoacoustic engine 1 with a vapor compression heat pump by connecting the exhaust port of the compressor 7 to the cold-end heat exchanger 12, thereby improving the operating efficiency of the thermoacoustic heat pump device at low temperatures. Specifically, by setting up the thermoacoustic engine 1, heat can be transferred from the cold-end heat exchanger 12 to the hot-end heat exchanger 11 using the thermoacoustic effect, and the cold and heat generated during the operation of the thermoacoustic engine 1 are used for vapor compression cycle and the second heat exchanger 22, respectively. Furthermore, since the heat transfer process is less affected by the external ambient temperature, the thermoacoustic heat pump device of this application has a significant advantage in operating efficiency compared to traditional vapor compression.

[0059] The following is combined Figure 1 The first specific embodiment of the thermoacoustic heat pump device of this application will be described.

[0060] like Figure 1 As shown, in the first embodiment, the thermoacoustic heat pump device is applied to a household heating scenario, and includes a thermoacoustic engine 1, a first heat exchanger 21, a second heat exchanger 22, a first fan 41, a second fan 42, a compressor 7, and a throttling element 9.

[0061] 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.

[0062] 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 driving device (such as a linear compressor or linear motor) drives a piston to move at high speed and reciprocate, generating sound waves. When these sound waves propagate through the gas, a thermoacoustic effect is produced, 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 sound waves, relatively stable compression and expansion regions are formed in specific areas, thus creating cold and hot ends within the cavity, respectively. Furthermore, by setting up a cold-end heat exchanger 12 and a hot-end heat exchanger 11 at the cold end and the hot end respectively, and setting up a regenerator 13 between the two heat exchangers, the heat and cold energy can be exported and utilized.

[0063] Compressor 7, cold-end heat exchanger 12, throttling element 9, and first heat exchanger 21 are circulated together via first refrigerant pipeline 51. Specifically, the discharge port of compressor 7 is connected to the first end of cold-end heat exchanger 12. Figure 1 The upper end shown is connected to the second end of the cold end heat exchanger 12. Figure 1 The lower end shown) and one end of the throttling element 9 ( Figure 1 The left end shown is connected, and the other end of the throttling element 9 ( Figure 1 The right end shown) and the second end of the first heat exchanger 21 (shown on the right) Figure 1 The left end shown is connected to the first end of the first heat exchanger 21. Figure 1 The right end shown is connected to the air intake of the compressor 7. The first heat exchanger 21 is an air-cooled heat exchanger, located outdoors. The first fan 41 is positioned corresponding to the first heat exchanger 21. When the first fan 41 starts, it draws outdoor air through the first heat exchanger 21 to exchange heat with the refrigerant inside. Preferably, the throttling element 9 is an electronic expansion valve.

[0064] The second heat exchanger 22 is an air-cooled heat exchanger, which is installed indoors and circulatedly connected to the hot-end heat exchanger 11 via the first refrigerant pipe 53. A second fan 42 is installed corresponding to the second heat exchanger 22. When the second fan 42 is started, it drives indoor air to flow through the second heat exchanger 22 and exchange heat with the first refrigerant flowing through it. A first pump body 61 is installed in the first refrigerant pipe 53. When the first pump body 61 is started, it drives the first refrigerant to circulate between the second heat exchanger 22 and the hot-end heat exchanger 11. In this application, water is preferably used as the first refrigerant.

[0065] The following is combined Figure 1 The working principle of the thermoacoustic heat pump device according to the first embodiment of this application will be briefly introduced.

[0066] like Figure 1 As shown, when indoor heating 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 61 start operating. On one hand, the thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. The first pump 61 drives the first refrigerant to circulate in the first refrigerant pipeline 53. When flowing through the hot-end heat exchanger 11, the first refrigerant exchanges heat with the hot-end heat exchanger 11, absorbing heat from it. When the first refrigerant flows through the second heat exchanger 22, it exchanges heat with the indoor air, thereby discharging the heat into the indoor environment through the second heat exchanger 22, achieving indoor heating. On the other hand, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 7 first passes through the cold end heat exchanger 12 and exchanges heat with the cold energy in the cold end heat exchanger 12. After the heat exchange, the refrigerant cools down and becomes liquid. After the liquid refrigerant is cooled down and depressurized by the throttling element 9, it becomes a low-temperature and low-pressure gas-liquid mixture refrigerant. When the low-temperature and low-pressure gas-liquid mixture refrigerant flows through the first heat exchanger 21, it exchanges heat with the outdoor ambient air, absorbs the heat of the outdoor ambient air and rises in temperature to form a gaseous state. The gaseous refrigerant flows back to the compressor 7.

[0067] The following reference Figure 2 and Figure 5 The second specific embodiment of the thermoacoustic heat pump device of this application will be described.

[0068] like Figure 2As shown, based on the first embodiment, this embodiment of the thermoacoustic heat pump device adds a four-way valve 8, a third heat exchanger 23, a valve body 31, and a second refrigerant pipeline 52. Specifically, the third heat exchanger 23 is also an air-cooled heat exchanger, and the second heat exchanger 22 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-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 the first end of the 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 second end of the throttling element 9 and the cold end heat exchanger 12. Figure 2 The second fan 42 can act on the second heat exchanger 22 and the third heat exchanger 23 simultaneously. In other words, when the second fan 42 is started, it can drive indoor air to flow through the second heat exchanger 22 and the third heat exchanger 23 simultaneously or sequentially.

[0069] Valve body 31 is a three-way control valve, and the first port of the three-way control valve ( Figure 2 Middle right interface), second interface ( Figure 2 (Middle and upper side interface) and third interface ( Figure 2 The left-side interface is connected to one end of the throttling element 9, the second end of the 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.

[0070] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, the first end of the cold end heat exchanger 12, the first end of the first heat exchanger 21, and the suction port of the compressor 7.

[0071] The following is combined Figures 3 to 5 The working principle of the second embodiment of the thermoacoustic heat pump device of this application will be introduced.

[0072] First refer to Figure 3 When the outdoor ambient temperature is low and users have heating needs, the device operates in ultra-low temperature heating mode: at this time, thermoacoustic motor 1, compressor 7, first fan 41, second fan 42, and first pump body 61 start running, throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 3 Right side interface) and second interface ( Figure 3(Upper interface) is connected. During the operation of the thermoacoustic machine 1, heat and cold are generated through the thermoacoustic effect, and the heat and cold are absorbed by the hot-end heat exchanger 11 and the cold-end heat exchanger 12, respectively. The first pump body 61 drives the first refrigerant to circulate between the hot-end heat exchanger 11 and the second heat exchanger 22. When the first refrigerant passes through the hot-end heat exchanger 11, it exchanges heat with the hot-end heat exchanger 11, absorbing the heat in the hot-end heat exchanger 11 and rising in temperature. When the first refrigerant continues to flow through the second heat exchanger 22, it exchanges heat with the indoor air flow, absorbing the cold air in the indoor air and cooling down, and the corresponding indoor air temperature rises, thus achieving heating of the room. On the other hand, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 7 first passes through the cold-end heat exchanger 12, exchanging heat with the cold air in the cold-end heat exchanger 12 and cooling down into 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 first heat exchanger 21, it exchanges heat with the air in the outdoor environment, absorbs the heat from the outdoor air, and rises in temperature to vaporize. The vaporized refrigerant then returns to the compressor 7 to continue the cycle.

[0073] Next, refer to Figure 4 When the outdoor ambient temperature is high and there is a heating demand, the device operates in the normal heating mode: at this time, compressor 7, first fan 41, and second fan 42 start running, thermoacoustic motor 1 and first pump body 61 stop, throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 4 Right side interface) and third interface ( Figure 4 (Left 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 indoor air to heat the room. After heat exchange, the refrigerant cools down to 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 first heat exchanger 21, it exchanges heat with the outdoor air, absorbs heat from the outdoor air, and vaporizes. The vaporized refrigerant returns to compressor 7 to continue the cycle.

[0074] Finally refer to Figure 5 When a user has a cooling need, the device operates in cooling 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 thermoacoustic machine 1 and the first pump body 61 stop, the throttling element 9 opens to a certain degree, and the first port of the three-way control valve ( Figure 5 Right side interface) and third interface ( Figure 5(Left interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from compressor 7 first passes through the first heat exchanger 21, where it exchanges heat with the outdoor ambient air, cooling down to become liquid refrigerant. 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. This low-temperature, low-pressure refrigerant then exchanges heat with the indoor air in the third heat exchanger 23, absorbing heat and vaporizing, thus lowering the indoor air temperature and achieving cooling. The vaporized refrigerant then returns to compressor 7 to continue the cycle.

[0075] The above-described configuration, by incorporating a third heat exchanger 23, allows for the independent operation of the steam compression cycle, enhancing the device's applicability to various scenarios and ensuring operational efficiency. By having the second and third heat exchangers 22 and 23 belong to the same heat exchanger, a high degree of integration and functional reuse can be achieved, reducing structural complexity and increasing the device's integration level. The four-way valve 8 enables switching between different modes of the thermoacoustic heat pump device, allowing it to operate in multiple modes and further expanding its applicability.

[0076] The following reference Figure 6 The third embodiment of the thermoacoustic heat pump device of this application will be briefly introduced.

[0077] like Figure 6 As shown, in the third embodiment, the thermoacoustic heat pump device is supplemented with a four-way valve 8 based on the first embodiment. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, the first end of the cold end heat exchanger 12, the first end of the first heat exchanger 21, and the suction port of the compressor 7.

[0078] Thus, based on the ability to generate heat, indoor cooling can be achieved by switching the four-way valve 8. Specifically, when cooling is needed, the four-way valve 8 switches, and the compressor 7, the first fan 41, the second fan 42, and the first pump 61 start running. The throttling element 9 opens to a certain degree, and the thermoelectric motor 1 stops. The high-temperature, high-pressure gaseous refrigerant discharged by the compressor 7 first passes through the first heat exchanger 21, where it exchanges heat with the outdoor ambient air, cooling down to form a liquid refrigerant. The liquid refrigerant continues to flow through the throttling element 9, where it cools down and depressurizes, becoming a low-temperature, low-pressure gas-liquid mixture. When the low-temperature, low-pressure refrigerant passes through the cold-end heat exchanger 12, it exchanges heat with the first refrigerant flowing in the hot-end heat exchanger 11 through natural heat exchange, transferring cooling capacity to the first refrigerant. Driven by the first pump 61, the first refrigerant circulates to the third heat exchanger 23 and exchanges heat with the indoor air, absorbing heat from the indoor air and rising in temperature to vaporize. Consequently, the indoor air temperature decreases, achieving indoor cooling. The refrigerant that has exchanged heat with the first refrigerant vaporizes and returns to compressor 7 to continue the cycle.

[0079] The following reference Figure 7 The fourth embodiment of the thermoacoustic heat pump device of this application will be briefly introduced.

[0080] like Figure 7 As shown, based on the first embodiment, this embodiment of the thermoacoustic heat pump device adds a four-way valve 8, a second refrigerant pipeline 52, an intermediate heat exchanger 24, a bypass pipeline 55, a valve body 31, and a valve section 32. Specifically, the intermediate heat exchanger 24 is a plate heat exchanger. It has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other, wherein the first heat exchange flow path is located in the first refrigerant pipeline 53, and the second heat exchange flow path is located in the second refrigerant pipeline 52. The hot-end heat exchanger 11, the second heat exchanger 22, and the first heat exchange flow path are sequentially arranged on the first refrigerant pipeline 53 along the flow direction of the first refrigerant. The first end of the second refrigerant pipeline 52 ( Figure 7 The upper end shown is connected to the first end of the cold end heat exchanger 12. Figure 7 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 7 The lower end shown is connected to the second end of the throttling element 9 and the cold end heat exchanger 12. Figure 7 On the first refrigerant pipe 51 between the lower end shown) and the first refrigerant pipe.

[0081] Valve body 31 is a three-way control valve, and the first port of the three-way control valve ( Figure 7 Middle right interface), second interface ( Figure 7 (Middle and upper side interface) and third interface ( Figure 7 The left-side interface is connected to one end of the throttling element 9 and the second end of the cold-end heat exchanger 12, respectively. Figure 7 (as shown at the lower end) and one end of the second heat exchange flow path ( Figure 7 (As shown at the lower end) is connected. The first port of the three-way control valve can be selectively connected to the second or third port to change the direction of refrigerant flow.

[0082] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, the first end of the cold end heat exchanger 12, the first end of the first heat exchanger 21, and the suction port of the compressor 7.

[0083] The two ends of the bypass pipe 55 are respectively connected to the two ends of the hot-end heat exchanger 11. Specifically, one end of the bypass pipe 55 ( Figure 7 The upper end shown is connected to one end of the hot-end heat exchanger 11. Figure 7 The upper end shown) and one end of the second heat exchanger 22 ( Figure 7 On the first cooling pipe 53 between the right end shown), the other end of the bypass pipe 55 (shown on the right end) Figure 7 The lower end shown is connected to the other end of the hot-end heat exchanger 11. Figure 7 The first cooling pipe 53 between the lower end shown and the first pump body 61.

[0084] The valve section 32 is configured to selectively control the flow of the first refrigerant through the bypass line 55 or the hot-end heat exchanger 11. 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 hot-end heat exchanger 11, one end of the bypass line 55, and one end of the second heat exchanger 22. The three ports of the other three-way control valve are respectively connected to the other end of the hot-end heat exchanger 11, the other end of the bypass line 55, and the first pump body 61. The two three-way control valves are configured to selectively control the flow of the first refrigerant through the bypass line 55 or the hot-end heat exchanger 11. In other words, each three-way control valve can achieve individual connection between at least any two ports.

[0085] Thus, by setting up the intermediate heat exchanger 24, the vapor compression cycle can operate independently. The intermediate heat exchanger 24 can transfer the heat or cold of the refrigerant to the second heat exchanger 22, achieving heating and cooling of the room. Furthermore, when transferring heat or cold using the intermediate heat exchanger 24, the flow direction of the first refrigerant can be controlled using the bypass pipe 55 and the valve section 32, allowing the first refrigerant to bypass the hot-end heat exchanger 11 and circulate only between the intermediate heat exchanger 24 and the second heat exchanger 22. The specific working principle can be referred to in the second embodiment, which will not be elaborated further in this embodiment.

[0086] By setting up an intermediate heat exchanger 24, the heat from the steam compression cycle can be transferred to the second heat exchanger 22, thereby enabling the steam compression cycle to operate independently and expanding the applicability of the device. By setting up a bypass pipe 55, the flow direction of the refrigerant can be controlled, avoiding heat loss caused by the refrigerant flowing through the hot-end heat exchanger 11 when the steam compression cycle operates independently, thereby improving the operating efficiency of the device.

[0087] The following is combined Figure 8 The fifth embodiment of the thermoacoustic heat pump device of this application will be briefly introduced.

[0088] like Figure 8 As shown, based on the first embodiment, this embodiment of the thermoacoustic heat pump device adds a four-way valve 8, a second refrigerant pipeline 52, a second cooling pipeline 54, an intermediate heat exchanger 24, a valve body 31, a first valve 33, and a second valve 34. Specifically, the intermediate heat exchanger 24 is a plate heat exchanger. It 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 located in the second cooling pipeline 54, and the second heat exchange flow path is located in the second refrigerant pipeline 52. The hot-end heat exchanger 11 and the second heat exchanger 22 are circulatedly connected through the first cooling pipeline 53, and one end of the second cooling pipeline 54 ( Figure 8 The upper end shown is connected to one end of the second heat exchanger 22. Figure 8The upper end shown) and one end of the hot end heat exchanger 11 ( Figure 8 On the first cooling pipe 53 between the upper end shown), the other end of the second cooling pipe 54 (shown at the upper end) Figure 8 The lower end shown is connected to the other end of the first pump body 61 and the hot end heat exchanger 11. Figure 8 The first end of the second refrigerant line 52 (shown at the lower end) is on the first refrigerant line 53. Figure 8 The upper end shown is connected to the first end of the cold end heat exchanger 12. Figure 8 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 8 The lower end shown is connected to the second end of the throttling element 9 and the cold end heat exchanger 12. Figure 8 On the first refrigerant pipe 51 between the lower end shown) and the first refrigerant pipe.

[0089] Valve body 31 is a three-way control valve, and the first port of the three-way control valve ( Figure 8 Middle right interface), second interface ( Figure 8 (Middle and upper side interface) and third interface ( Figure 8 The left-side interface is connected to one end of the throttling element 9 and the second end of the cold-end heat exchanger 12, respectively. Figure 8 (as shown at the lower end) and one end of the second heat exchange flow path ( Figure 8 (As shown at the lower end) is connected. The first port of the three-way control valve can be selectively connected to the second or third port to change the direction of refrigerant flow.

[0090] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, the first end of the cold end heat exchanger 12, the first end of the first heat exchanger 21, and the suction port of the compressor 7.

[0091] Both the first valve 33 and the second valve 34 are solenoid valves, with the first valve 33 located at one end of the hot-end heat exchanger 11. Figure 8 The upper end shown) and one end of the second cooling pipe 54 ( Figure 8 The second valve 34 is installed on the first cooling pipeline 53 between the upper end shown in the figure and the second cooling pipeline 54.

[0092] In this way, the heat or cold energy of the refrigerant can be transferred to the second heat exchanger 22 using the intermediate heat exchanger 24, achieving heating and cooling of the room and enabling independent operation of the vapor compression cycle. Furthermore, the flow direction of the first 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, opening the first valve 33 and closing the second valve 34 allows the first refrigerant to circulate between the second heat exchanger 22 and the hot-end heat exchanger 11. When the compressor 7 is running, opening the second valve 34 and closing the first valve 33 allows the first refrigerant to circulate between the second heat exchanger 22 and the first 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.

[0093] By setting up an intermediate heat exchanger 24, the heat from the vapor compression cycle can be transferred to the second heat exchanger 22, thereby enabling the vapor compression cycle to operate independently and expanding the applicability of the device. By setting up the first valve 33 and the second valve 34, the flow direction of the refrigerant can be controlled to avoid heat waste.

[0094] Next, refer to Figure 9 and Figure 10 The sixth embodiment of the thermoacoustic heat pump device of this application will be briefly described.

[0095] 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 14, and each thermoacoustic unit includes a compression section 15 and a heat exchange section. The compression section 15 is a linear compressor, which includes electromagnetic components, a power piston, a spring, an exhaust fan, etc. The heat exchange section includes a hot-end heat exchanger 11, a regenerator 13, and a cold-end heat exchanger 12. An expansion chamber and a compression chamber are formed within the housing 14. The cold-end heat exchanger 12 is located in the expansion chamber, the hot-end heat exchanger 11 is located in the compression chamber, and the regenerator 13 is located between the cold-end heat exchanger 12 and the hot-end heat exchanger 11. Further, as... Figure 10 As shown, in this application, the two cold-end heat exchangers 12 are positioned opposite each other (i.e., the two cold-end heat exchangers 12 are close to each other and face each other), and a partition 16 is provided between the two cold-end heat exchangers 12 to separate the two thermoacoustic units. (Return to Reference) Figure 9 The discharge port of compressor 7 is connected to the first end of at least one cold-end heat exchanger 12, and one end of throttling element 9 is connected to the second end of at least one cold-end heat exchanger 12. The second heat exchanger 22 exchanges heat with the two hot-end heat exchangers 11 via a first refrigerant. Specifically, the discharge port of compressor 7 is simultaneously connected to the first end of both 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 cold end heat exchangers 12. Figure 9 The lower end of the second heat exchanger 22 is connected, at which point the two cold-end heat exchangers 12 form a structure similar to a "parallel" connection in electrical circuitry. The inlet of the second heat exchanger 22 (as shown below) 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 second heat exchanger 22. Figure 9 The lower port shown is simultaneously connected to the other end of the two hot-end heat exchangers 11. Figure 9 The lower end is connected, and at this time the two hot end heat exchangers 11 also form a "parallel" structure similar to that in electricity.

[0096] Thus, by setting two thermoacoustic units in the thermoacoustic unit 1, not only can the cooling and heating capacity be doubled, but the problem of high vibration and noise caused by a single thermoacoustic unit can also be overcome by placing the two thermoacoustic units opposite each other. Placing the two thermoacoustic units within the same housing 14 and separating the heat exchange sections by a partition 16 simplifies the manufacturing process, eliminating the need for specific design of the interior of the housing 14. The working principle of the above embodiment can be referred to the first embodiment, and will not be repeated here.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] For example, in another alternative embodiment, the arrangement of the second heat exchanger 22 and the third heat exchanger 23 belonging to the same heat exchanger in the second embodiment described above is only a preferred option. In other embodiments, those skilled in the art can also separate and set them independently, for example, setting two indoor 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.

[0101] 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 select it based on specific scenarios. For example, the second heat exchanger 22 can also be a coil heat exchanger, which is installed in a water tank to produce domestic hot water. Furthermore, the second heat exchanger 22 can also be a plate heat exchanger or a shell-and-tube heat exchanger, etc., which is used for indoor heating, etc.

[0102] For example, in another alternative embodiment, the arrangement of the second heat exchanger 22 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 second heat exchanger 22 may be a heat pipe heat exchanger, with its condenser end exchanging heat with indoor air, 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 second heat exchanger 22, the heat exchange effect can be improved, and the first pump body 61 can be omitted, reducing system setup costs.

[0103] Alternatively, a loop heat pipe can be formed between the second heat exchanger 22 and the hot-end heat exchanger 11 via a pipeline, with the first refrigerant filling the loop heat pipe. In this case, the evaporator of the loop heat pipe is the hot-end heat exchanger 11, where the liquid first refrigerant absorbs heat and vaporizes by exchanging heat with the evaporator. A capillary structure needs to be installed inside the loop heat pipe to provide a pressure drop. The condenser of the loop heat pipe is the second heat exchanger 22, where the gaseous first refrigerant exchanges heat with the indoor air and cools down to liquefy. The first refrigerant, which can be an ammonia solution, Freon, water, etc., fills the loop heat pipe. The loop heat pipe formed between the second heat exchanger 22 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.

[0104] 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.

[0105] For example, in another alternative embodiment, although the above embodiments are described with water as the first refrigerant, the specific selection of the first refrigerant is not fixed, and those skilled in the art can choose it based on the specific application scenario. For example, when the second heat exchanger 22 is installed indoors, those skilled in the art can also choose other refrigerants with a freezing point greater than or equal to 0°C.

[0106] 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.

[0107] 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.

[0108] For example, in another alternative embodiment, although the fourth embodiment described above is illustrated with an example of having a bypass pipe 55 and a valve section 32, the bypass pipe 55 is not mandatory in this embodiment. Those skilled in the art can choose whether to include the bypass pipe 55 based on the specific application scenario. For example, in other embodiments, the bypass pipe 55 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 providing only one three-way control valve.

[0109] For example, in another alternative embodiment, although the fifth 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 water flow direction. 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.

[0110] 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 and the hot-end heat exchanger 11. For instance, an intermediate pipe can be added between the second heat exchanger 22 and the hot-end heat exchanger 11 to achieve indirect heat exchange. This can be achieved by setting up an intermediate circulation pipe, an indirect heat exchanger, and a second pump. The indirect heat exchanger has two flow paths that exchange heat with each other. One flow path circulates with the hot-end heat exchanger 11 via the intermediate circulation pipe, and the second pump is located on the intermediate circulation pipe. The other flow path circulates with the second heat exchanger 22 via the first cooling pipe 53, achieving circulatory heat exchange driven by the first pump 61. Thus, the heat from the hot-end heat exchanger 11 is transferred to the second heat exchanger 22 via the intermediate circulation pipe, the indirect heat exchanger, and the first cooling pipe 53, achieving indirect heat exchange between the hot-end heat exchanger 11 and the second heat exchanger 22. By setting an intermediate heat exchanger 24 for indirect heat exchange, the heat exchanger design of the thermoacoustic machine 1 can be made more compact, and the selection of refrigerant types can be more diverse.

[0111] For example, in another alternative embodiment, although the sixth embodiment described above is based on the example of two thermoacoustic units being arranged in the same housing 14, this is only a preferred embodiment. In other embodiments, two separate thermoacoustic units 1 can also be arranged opposite each other.

[0112] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the sixth embodiment above are separated by a partition 16, 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 12 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.

[0113] For example, in another alternative implementation, although the sixth implementation described above is based on the example of two cold-end heat exchangers 12 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.

[0114] For example, in another alternative embodiment, the specific form of the compression unit 15 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.

[0115] For example, in another alternative embodiment, although the sixth embodiment described above is illustrated by setting both the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 in parallel, 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 cold-end heat exchangers 12 and the two hot-end heat exchangers 11 can be changed so that this application can be applied to more specific application scenarios. For example, the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 are respectively connected in series, that is, the first refrigerant passes through the two hot-end heat exchangers 11 in sequence before exchanging heat with the second heat exchanger 22, and the refrigerant discharged from the compressor 7 passes through the two cold-end heat exchangers 12 in sequence before entering the throttling element 9.

[0116] For example, in another alternative embodiment, although the above embodiments are described in conjunction with a household thermoacoustic heat pump 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 thermoacoustic heat pump device of this application is also applicable to application scenarios such as commercial heat pumps.

[0117] 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 sixth implementation method can also be applied to the second, third, fourth, and fifth implementation methods.

[0118] 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.

[0119] 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. A thermoacoustic heat pump device, characterized in that, The thermoacoustic heat pump device includes: A thermoacoustic machine, the thermoacoustic machine comprising a hot-end heat exchanger and a cold-end heat exchanger; The compressor, wherein the exhaust port of the compressor is connected to the first end of the cold end heat exchanger; The first heat exchanger has its first end connected to the air intake of the compressor. A throttling element, the two ends of which are respectively connected to the second end of the cold end heat exchanger and the second end of the first heat exchanger; The second heat exchanger exchanges heat directly or indirectly with the hot-end heat exchanger through the first refrigerant.

2. The thermoacoustic heat pump device according to claim 1, characterized in that, The second heat exchanger is circulatedly connected to the hot end heat exchanger through the first cooling pipeline. The thermoacoustic heat pump device also includes a first pump body, which is disposed in the first cooling pipeline, and a first refrigerant is filled in the first cooling pipeline.

3. The thermoacoustic heat pump device according to claim 1, characterized in that, The second 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 second 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 thermoacoustic heat pump device according to claim 1, characterized in that, The thermoacoustic heat pump device further includes a third heat exchanger, the first end of which is connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the second end of which is connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger. The thermoacoustic heat pump device further includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the cold-end heat exchanger or the third heat exchanger.

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

6. The thermoacoustic heat pump device according to claim 2, characterized in that, The thermoacoustic heat pump device further includes an intermediate 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 disposed in the first cooling pipeline. One end of the second heat exchange flow path is connected to the refrigerant pipeline between the first end of the cold end heat exchanger and the exhaust port of the compressor. The other end of the second heat exchange flow path is connected to the refrigerant pipeline between the throttling element and the second end of the cold end heat exchanger. The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path.

7. The thermoacoustic heat pump device according to claim 6, characterized in that, The thermoacoustic heat pump device further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the hot end heat exchanger. The thermoacoustic heat pump device also includes a valve, which is configured to selectively control the flow of the first refrigerant through the bypass pipeline or the hot end heat exchanger.

8. The thermoacoustic heat pump device according to claim 2, characterized in that, The thermoacoustic heat pump device further includes an intermediate heat exchanger, which has a first heat exchange flow path and a second heat exchange flow path that can exchange heat with each other. One end of the first heat exchange flow path is connected to a first cooling pipe between one end of the second heat exchanger and the hot end heat exchanger, and the other end of the first heat exchange flow path is connected to a first cooling pipe between the first pump body and the other end of the hot end heat exchanger. The first end of the second heat exchange flow path is connected to a refrigerant pipe between the first end of the cold end heat exchanger and the exhaust port of the compressor, and the other end of the second heat exchange flow path is connected to a refrigerant pipe between the throttling element and the second end of the cold end heat exchanger. The thermoacoustic heat pump device further includes a valve body or valve group, which is configured to selectively control the flow of refrigerant through the cold end heat exchanger or the second heat exchange path.

9. The thermoacoustic heat pump device according to claim 8, characterized in that, The thermoacoustic heat pump device further includes a first valve and a second valve. The first valve is located on the first cooling pipeline between one end of the hot end heat exchanger and one end of the second cooling pipeline, and the second valve is located on the second cooling pipeline.

10. The thermoacoustic heat pump device according to claim 1, characterized in that, The thermoacoustic machine 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, and a cold-end heat exchanger. The exhaust port of the compressor is connected to a first end of at least one of the cold-end heat exchangers. One end of the throttling element is connected to a second end of at least one of the cold-end heat exchangers. The second heat exchanger exchanges heat with the two hot-end heat exchangers through a first refrigerant.

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