Multi-connected heat pump

Abstract

The present application relates to the technical field of heat pump, in particular to a multi-connected heat pump. The present application aims to solve the problem of poor operation efficiency of vapor compression multi-connected heat pump. For this purpose, the multi-connected heat pump of the present application comprises: a thermoacoustic engine comprising a hot end heat exchanger and a cold end heat exchanger; a first outdoor heat exchange part in heat exchange with the cold end heat exchanger; a heat storage device provided with a water inlet and a water outlet, the water inlet and the water outlet being in communication with the hot end heat exchanger; a first pump body arranged in a first water pipeline; a first heat exchange component arranged in the first water pipeline and in heat exchange with water in the first water pipeline or the heat storage device; a compressor in communication with a second outdoor heat exchange part; a throttling element arranged between the exhaust port of the compressor and the second outdoor heat exchange part; a second heat exchange component having a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path being arranged between the exhaust port of the compressor and the throttling element, and the second heat exchange flow path being in direct or indirect communication with the first water pipeline. The working efficiency of the heat pump can be improved.

Description

Technical Field

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

[0002] A multi-split heat pump is a heat pump unit that can provide at least two of the three functions of air conditioning, underfloor heating and hot water. Because multi-split heat pumps can integrate multiple functions into one unit and have advantages such as high efficiency, energy saving, environmental protection and safety, they are increasingly favored by users.

[0003] For traditional vapor compression multi-generation heat pumps, their operating efficiency is closely related to the ambient temperature. As the ambient temperature decreases, the evaporation pressure of the system decreases, which not only reduces the heating capacity and efficiency, but in severe cases, it can also cause the compressor's compression ratio and exhaust temperature to exceed the standard, 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 poor operating efficiency of vapor compression multi-unit heat pumps, this application provides a multi-unit heat pump, which includes:

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

[0007] The first outdoor heat exchange section and the second outdoor heat exchange section are connected to the cold end heat exchanger by a first refrigerant.

[0008] A heat storage device for storing water, wherein the heat storage device is provided with an inlet and an outlet, and the inlet and outlet are circulatedly connected to the heat exchanger at the hot end through a first water pipeline.

[0009] A first pump body is disposed in the first water pipeline;

[0010] A first heat exchange component is disposed in the first water pipeline and the second refrigerant filled in the first heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device.

[0011] The compressor is circulated and connected to the second outdoor heat exchange unit via a refrigerant pipeline;

[0012] A throttling element is disposed between the exhaust port of the compressor and the second outdoor heat exchange section;

[0013] The second heat exchange component has a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is disposed between the exhaust port of the compressor and the throttling element, and the second heat exchange flow path can be directly or indirectly connected to the first water pipeline.

[0014] This application's multi-unit heat pump, by combining a thermoacoustic engine with a traditional vapor compression system, improves the heat pump's efficiency and achieves energy savings while providing multiple functions. Specifically, the thermoacoustic engine, when operating alone, generates cooling and heating at the cold and hot ends of the heat exchanger through the thermoacoustic effect. The heat is then used in the heat storage device and the first heat exchange component, achieving efficient heat utilization. Furthermore, since the working principle of the thermoacoustic engine means that ambient temperature has little impact on its efficiency, this application's multi-unit heat pump has a significant advantage in efficiency compared to traditional vapor compression. By exchanging heat between the first heat exchange component and the first water pipeline through the second refrigerant, water contamination in the first water pipeline can be avoided, improving the user's water quality. By incorporating the second heat exchange component, the traditional vapor compression system can be used to provide heat to the heat storage device and the first heat exchange component, broadening the application scenarios of the heat pump.

[0015] In the preferred embodiment of the above-mentioned multi-unit heat pump, the multi-unit heat pump further includes a first fan, and at least one of the first outdoor heat exchange section and the second outdoor heat exchange section is an air-cooled heat exchanger; and / or

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

[0017] By having the first and second outdoor heat exchange sections belong to the same outdoor heat exchanger, a high degree of integration and functional reuse of the outdoor heat exchanger can be achieved, thereby reducing the structural complexity of the heat pump and improving the degree of integration of the heat pump.

[0018] In the preferred embodiment of the above-mentioned multi-unit heat pump, the first outdoor heat exchange section is circulatedly connected to the cold-end heat exchanger through a first refrigerant pipeline. The multi-unit heat pump further includes a second pump body, which is disposed in the first refrigerant pipeline, and the first refrigerant is filled in the first refrigerant pipeline; or

[0019] The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or

[0020] The first outdoor heat exchange section and the cold 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.

[0021] In the preferred embodiment of the above-mentioned multi-unit heat pump, the heat storage device is a water heater or a domestic water tank, and the first heat exchange component is a plate heat exchanger, a shell-and-tube heat exchanger, or a coil heat exchanger; and / or

[0022] The heat storage device is located upstream of the first heat exchange component.

[0023] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump 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 second heat exchange component, one end of the second outdoor heat exchange component, and the intake port of the compressor.

[0024] By setting a four-way valve, the heat pump can operate in multiple modes, further expanding the application scenarios of the heat pump.

[0025] In the preferred embodiment of the above-mentioned multi-unit heat pump, the thermoacoustic unit 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 first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant. The inlet and outlet are circulatedly connected to the two hot-end heat exchangers through the first water pipeline.

[0026] 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.

[0027] In the preferred embodiment of the above-mentioned multi-unit heat pump, 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

[0028] The two cold-end heat exchangers are positioned opposite each other.

[0029] 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.

[0030] In the preferred technical solution of the above-mentioned multi-unit heat pump, the second heat exchange flow path is set in the first water pipeline.

[0031] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a first bypass pipeline, the two ends of which are respectively connected to the two ends of the hot end heat exchanger. The multi-unit heat pump also includes a first valve, which is configured to selectively control the water flow through the first bypass pipeline or the hot end heat exchanger.

[0032] By setting up a first bypass pipe and a first valve section, the direction of water flow can be adjusted to prevent water from flowing through the hot end heat exchanger and causing additional heat loss.

[0033] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a second water pipeline, the second heat exchange flow path is disposed in the second water pipeline, one end of the second water pipeline is connected to a first water pipeline between one end of the hot end heat exchanger and one end of the heat storage device, and the other end of the second water pipeline is connected to a first water pipeline between the other end of the hot end heat exchanger and one end of the first heat exchange component.

[0034] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a third pump body, a first valve body, and a second valve body. The first valve body is disposed on a first water pipeline between one end of the hot-end heat exchanger and one end of the second water pipeline. The third pump body and the second valve body are disposed on the second water pipeline. The first pump body is disposed on the first water pipeline between one end of the hot-end heat exchanger and one end of the second water pipeline.

[0035] By setting up a first valve body, a second valve body, and a third pump body, the flow direction of water can be controlled, avoiding energy loss of water and improving the operating efficiency of the heat pump.

[0036] In the preferred embodiment of the above-mentioned multi-unit heat pump, the multi-unit heat pump further includes a second bypass pipeline, a third valve body and a fourth valve body. The two ends of the second bypass pipeline are respectively connected to the inlet and outlet of the heat storage device. The third valve body is disposed at the inlet or outlet of the heat storage device, and the fourth valve body is disposed at the second bypass pipeline.

[0037] By setting up a second bypass pipe, the direction of water flow can be controlled, enabling the independent operation of the first heat exchange component.

[0038] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a second fan, which is configured corresponding to the second heat exchange component. The first heat exchange flow path and the second heat exchange flow path can also exchange heat with the indoor air flow.

[0039] By installing a second fan, heat can be provided to users using a second heat exchange component, thus realizing the multi-functional use of the second heat exchange component.

[0040] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes an indoor heat exchanger and a second fan. The indoor heat exchanger is disposed on the refrigerant pipeline between the exhaust port of the compressor and the throttling element, and the second fan is disposed corresponding to the indoor heat exchanger.

[0041] By installing an indoor heat exchanger, the function of a multi-generation heat pump can be increased, achieving a three-generation system.

[0042] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a third heat exchange component, an indoor heat exchanger, and a second fan. The third heat exchange component is disposed in the first water pipeline and is circulatedly connected to the indoor heat exchanger. The third refrigerant filled in the third heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device. The second fan is disposed corresponding to the indoor heat exchanger.

[0043] By setting up a third heat exchange component, an indoor heat exchanger, and a second fan, a combined heat and power (CHP) system for the heat pump can be achieved.

[0044] In the preferred embodiment of the multi-unit heat pump described above, the multi-unit heat pump further includes a third heat exchange component, an indoor heat exchanger, and a second fan. The third heat exchange component is disposed in the first water pipeline and is circulatedly connected to the indoor heat exchanger. The third refrigerant filled in the third heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device. The second fan is disposed corresponding to the indoor heat exchanger.

[0045] By setting up a third heat exchange component, an indoor heat exchanger, and a second fan, a combined heat and power (CHP) system for the heat pump can be achieved.

[0046] In the preferred embodiment of the above-mentioned multi-unit heat pump, the multi-unit heat pump further includes a third bypass pipeline and a fifth valve body. The heat storage device is arranged adjacent to the first heat exchange component. The two ends of the third bypass pipeline are respectively connected to the two ends of the heat storage device and the first heat exchange component that are far apart from each other. The fifth valve body is arranged on the third bypass pipeline.

[0047] By setting up a third bypass pipe and a fifth valve body, the flow direction of water can be controlled using the third bypass pipe, enabling the independent operation of the third heat exchange component. Solution 1. A multi-unit heat pump, characterized in that the multi-unit heat pump comprises: A thermoacoustic machine, the thermoacoustic machine comprising a hot-end heat exchanger and a cold-end heat exchanger; The first outdoor heat exchange section and the second outdoor heat exchange section are connected to the cold end heat exchanger by a first refrigerant. A heat storage device for storing water, wherein the heat storage device is provided with an inlet and an outlet, and the inlet and outlet are circulatedly connected to the heat exchanger at the hot end through a first water pipeline. A first pump body is disposed in the first water pipeline; A first heat exchange component is disposed in the first water pipeline and the second refrigerant filled in the first heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device. The compressor is circulated and connected to the second outdoor heat exchange unit via a refrigerant pipeline; A throttling element is disposed between the exhaust port of the compressor and the second outdoor heat exchange section; The second heat exchange component has a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is disposed between the exhaust port of the compressor and the throttling element, and the second heat exchange flow path is directly or indirectly connected to the first water pipe. Option 2. The multi-unit heat pump according to Option 1, characterized in that the multi-unit heat pump further includes a first fan, and at least one of the first outdoor heat exchange section and the second outdoor heat exchange section is an air-cooled heat exchanger; and / or The first outdoor heat exchange section and the second outdoor heat exchange section are independent of each other or belong to different parts of the same outdoor heat exchanger. Option 3. The multi-unit heat pump according to Option 1, characterized in that the first outdoor heat exchange section is circulatedly connected to the cold end heat exchanger through a first cooling pipeline, and the multi-unit heat pump further includes a second pump body, the second pump body being disposed in the first cooling pipeline, and the first cooling refrigerant being filled in the first cooling pipeline; or The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or The first outdoor heat exchange section and the cold 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 multi-unit heat pump according to Option 1, characterized in that the heat storage device is a water heater or a domestic water tank, and the first heat exchange component is a plate heat exchanger, a shell-and-tube heat exchanger, or a coil heat exchanger; and / or The heat storage device is located upstream of the first heat exchange component. Option 5. The multi-unit heat pump according to Option 1, characterized in that the multi-unit heat pump 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 second heat exchange component, one end of the second outdoor heat exchange component, and the intake port of the compressor. Option 6. The multi-unit heat pump according to Option 1, characterized in that the thermoacoustic unit 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 first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant, and the inlet and outlet are circulatedly connected to the two hot-end heat exchangers through the first water pipeline. Option 7. The multi-unit heat pump according to Option 6, 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. Option 8. The multi-unit heat pump according to Option 1, characterized in that the second heat exchange flow path is arranged in the first water pipeline. Scheme 9. The multi-unit heat pump according to Scheme 8, characterized in that the multi-unit heat pump further includes a first bypass pipeline, the two ends of the first bypass pipeline being respectively connected to the two ends of the hot end heat exchanger, and the multi-unit heat pump further includes a first valve, the first valve being configured to selectively control the water flow through the first bypass pipeline or the hot end heat exchanger. Scheme 10. The multi-unit heat pump according to Scheme 1, characterized in that the multi-unit heat pump further includes a second water pipeline, the second heat exchange flow path is disposed in the second water pipeline, one end of the second water pipeline is connected to a first water pipeline between one end of the hot end heat exchanger and one end of the heat storage device, and the other end of the second water pipeline is connected to a first water pipeline between the other end of the hot end heat exchanger and one end of the first heat exchange component. Solution 11. The multi-unit heat pump according to Solution 10, characterized in that the multi-unit heat pump further includes a third pump body, a first valve body, and a second valve body, wherein the first valve body is disposed on a first water pipeline between one end of the hot end heat exchanger and one end of the second water pipeline, the third pump body and the second valve body are disposed on the second water pipeline, and the first pump body is disposed on the first water pipeline between one end of the hot end heat exchanger and one end of the second water pipeline. Scheme 12. The multi-unit heat pump according to Scheme 10, characterized in that the multi-unit heat pump further includes a second bypass pipeline, a third valve body and a fourth valve body, the two ends of the second bypass pipeline are respectively connected to the inlet and outlet of the heat storage device, the third valve body is disposed at the inlet or outlet of the heat storage device, and the fourth valve body is disposed at the second bypass pipeline. Option 13. The multi-unit heat pump according to any one of Options 8 to 12, characterized in that the multi-unit heat pump further includes a second fan, the second fan being arranged corresponding to the second heat exchange component, and the first heat exchange flow path and the second heat exchange flow path being able to exchange heat with the indoor air flow. Option 14. The multi-unit heat pump according to any one of Options 8 to 12, characterized in that the multi-unit heat pump further includes an indoor heat exchanger and a second fan, the indoor heat exchanger being disposed on the refrigerant pipeline between the exhaust port of the compressor and the throttling element, and the second fan being disposed corresponding to the indoor heat exchanger. Option 15. The multi-unit heat pump according to Option 8 or 9, characterized in that the multi-unit heat pump further includes a third heat exchange component, an indoor heat exchanger, and a second fan, the third heat exchange component is disposed in the first water pipeline, the third heat exchange component is circulatedly connected with the indoor heat exchanger, the third refrigerant filled in the third heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device, and the second fan is disposed corresponding to the indoor heat exchanger. Option 16. A multi-unit heat pump according to any one of Options 10 to 12, characterized in that the multi-unit heat pump further includes a third heat exchange component, an indoor heat exchanger, and a second fan, the third heat exchange component is disposed in the first water pipeline, the third heat exchange component is circulatedly connected with the indoor heat exchanger, the third refrigerant filled in the third heat exchange component is capable of exchanging heat with the water in the first water pipeline or the heat storage device, and the second fan is disposed corresponding to the indoor heat exchanger. Scheme 17. The multi-unit heat pump according to Scheme 16, characterized in that the multi-unit heat pump further includes a third bypass pipeline and a fifth valve body, the heat storage device is arranged adjacent to the first heat exchange component, the two ends of the third bypass pipeline are respectively connected to the two ends of the heat storage device and the first heat exchange component that are far apart from each other, and the fifth valve body is arranged on the third bypass pipeline. Attached Figure Description

[0048] The present application will now be described with reference to the accompanying drawings. In the drawings:

[0049] Figure 1 This is a system diagram of a first embodiment of the multi-unit heat pump of this application;

[0050] Figure 2 This is a system diagram of a second embodiment of the multi-unit heat pump of this application;

[0051] Figure 3 This is a system diagram of a third embodiment of the multi-unit heat pump of this application;

[0052] Figure 4This is a system diagram of the first operating mode of the third embodiment of the multi-unit heat pump of this application;

[0053] Figure 5 This is a system diagram of the second operating mode of the third embodiment of the multi-unit heat pump of this application;

[0054] Figure 6 This is a system diagram of the third operating mode of the third embodiment of the multi-unit heat pump of this application;

[0055] Figure 7 This is a system diagram of the fourth embodiment of the multi-unit heat pump of this application;

[0056] Figure 8 This is a system diagram of the fifth embodiment of the multi-unit heat pump of this application;

[0057] Figure 9 This is a system diagram of the sixth embodiment of the multi-unit heat pump of this application;

[0058] Figure 10 This is a system diagram of the seventh embodiment of the multi-unit heat pump of this application;

[0059] Figure 11 This is a system diagram of the eighth embodiment of the multi-unit heat pump of this application;

[0060] Figure 12 This is a system diagram of the ninth embodiment of the multi-unit heat pump of this application;

[0061] Figure 13 This is a system diagram of the tenth embodiment of the multi-unit heat pump of this application;

[0062] Figure 14 This is a schematic diagram of the thermoacoustic generator in the tenth embodiment of the multi-unit heat pump of this application.

[0063] List of reference numerals

[0064] 1. Thermoacoustic unit; 11. Hot-end heat exchanger; 12. Cold-end heat exchanger; 13. Regenerator; 14. Shell; 15. Compression section; 16. Baffle; 21. First outdoor heat exchange section; 22. Second outdoor heat exchange section; 23. Heat storage device; 231. Inlet; 232. Outlet; 24. First heat exchange component; 25. Second heat exchange component; 26. Third heat exchange component; 27. Heating terminal; 28. Indoor heat exchanger; 31. First pump body; 32. Second pump body 33. Third pump body; 4. Compressor; 5. Throttling element; 61. First fan; 62. Second fan; 71. First water pipe; 72. Second water pipe; 73. First cooling pipe; 74. Refrigerant pipe; 75. First bypass pipe; 76. Second bypass pipe; 77. Third bypass pipe; 8. Four-way valve; 91. First valve body; 92. Second valve body; 93. Third valve body; 94. Fourth valve body; 95. Fifth valve body; 96. First valve section. Detailed Implementation

[0065] 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.

[0066] It should be noted that in the description of this application, terms such as "upper," "lower," "left," and "right," indicating directional or positional relationships, are based on the directional 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," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in the description of this application, "multi-source power supply" refers to at least two.

[0067] 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.

[0068] First refer to Figure 1 This paper provides a brief introduction to the multi-unit heat pump of this application.

[0069] like Figure 1As shown, to address the problem of poor operating efficiency of vapor compression multi-unit heat pumps, the multi-unit heat pump of this application includes: a thermoacoustic unit 1, a first outdoor heat exchange section 21, a second outdoor heat exchange section 22, a heat storage device 23, a first pump body 31, a first heat exchange component 24, a compressor 4, a throttling element 5, and a second heat exchange component 25. The thermoacoustic unit 1 includes a hot-end heat exchanger 11 and a cold-end heat exchanger 12. The first outdoor heat exchange section 21 and the cold-end heat exchanger 12 exchange heat through a first refrigerant. The heat storage device 23 is used to store water. The heat storage device 23 is provided with an inlet 231 and an outlet 232. The inlet 231 and the outlet 232 are circulatedly connected to the hot-end heat exchanger 11 through a first water pipeline 71. The first pump body 31 is disposed on the first water pipeline 71. The first heat exchange component 24 is disposed in the first water pipe 71, and the second refrigerant filled in the first heat exchange component 24 can exchange heat with the water in the first water pipe 71 or the heat storage device 23. The compressor 4 is circulatedly connected to the second outdoor heat exchange section 22 through the refrigerant pipe 74. The throttling element 5 is disposed between the exhaust port of the compressor 4 and the second outdoor heat exchange section 22. The second heat exchange component 25 has a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is disposed between the exhaust port of the compressor 4 and the throttling element 5, and the second heat exchange flow path can be directly or indirectly connected to the first water pipe 71.

[0070] In one possible application scenario, taking the thermal storage device 23 for producing domestic hot water and the first heat exchange component 24 for heating as an example, when the outdoor ambient temperature is low and domestic hot water and heating are required, the thermoacoustic engine 1 operates while the compressor 4 stops. The thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling at the cold-end heat exchanger 12 and heating at the hot-end heat exchanger 11. The heat from the cold-end heat exchanger 12 is transferred to the first outdoor heat exchange section 21 through the first refrigerant, and then discharged through the first outdoor heat exchange section 21, for example, to the outdoor environment. The heat from the hot-end heat exchanger 11 is transferred to the thermal storage device 23 through the water in the thermal storage device 23, thus producing domestic hot water. The heat from the water in the first heat exchange component 24 is transferred to the heating terminal 27 through the second refrigerant filled in the first heat exchange component 24, which exchanges heat with the water in the first water pipe 71 or the thermal storage device 23, thus providing indoor heating.

[0071] When the outdoor ambient temperature is high and hot water and heating are required, compressor 4 operates while thermoelectric generator 1 shuts down. The high-temperature, high-pressure refrigerant discharged from compressor 4 first flows through the first heat exchange path of the second heat exchange component 25. In the first heat exchange path, the refrigerant exchanges heat with water in the second heat exchange path, transferring heat to the water. The water then transfers the heat to the heat storage device 23, thus producing hot water. Through the second refrigerant filled in the first heat exchange component 24, heat is exchanged with water in the first water pipe 71 or the heat storage device 23, transferring the heat from the water to the heating terminal 27, achieving indoor heating. After heat exchange, the refrigerant becomes liquid. The liquid refrigerant passes through the throttling element 5 for pressure reduction and then enters the second outdoor heat exchange section 22. In the second outdoor heat exchange section 22, it exchanges heat with the environment, increasing its temperature and forming a gaseous state before returning to compressor 4 to continue the cycle.

[0072] This application's multi-unit heat pump, by combining a thermoacoustic engine 1 with a traditional vapor compression system, improves the heat pump's efficiency and achieves energy savings while providing multiple functions. Specifically, the thermoacoustic engine 1, when operating alone, generates cooling and heating energy respectively in the cold-end heat exchanger 12 and the hot-end heat exchanger 11 through the thermoacoustic effect. The heat is then used in the heat storage device 23 and the first heat exchange component 24, achieving efficient heat utilization. Furthermore, since the working principle of the thermoacoustic engine 1 means that ambient temperature has little impact on its efficiency, this application's multi-unit heat pump has a significant advantage in efficiency compared to traditional vapor compression. The first heat exchange component 24 exchanges heat with the first water pipe 71 through the second refrigerant, preventing water contamination in the first water pipe 71 and improving the user's water quality. By setting up the second heat exchange component 25, heat can be provided to the heat storage device 23 and the first heat exchange component 24 using a traditional vapor compression system, broadening the application scenarios of the heat pump.

[0073] The following is combined with Figure 1 The first embodiment of the multi-unit heat pump of this application will be described in detail.

[0074] like Figure 1 As shown, in one specific embodiment, the multi-unit heat pump includes a thermoacoustic motor 1, a first outdoor heat exchange section 21, a second outdoor heat exchange section 22, a heat storage device 23, a first heat exchange component 24, a second heat exchange component 25, a first pump body 31, a second pump body 32, a third pump body 33, a first fan 61, a compressor 4, a throttling element 5, a first valve body 91, and a second valve body 92.

[0075] 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.

[0076] 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.

[0077] The heat storage device 23 is a domestic water tank, which stores water. The domestic water tank has an inlet 231 and an outlet 232. The inlet 231 (… Figure 1 The upper interface shown) and the outlet 232 ( Figure 1 The lower interface shown is circulatedly connected to the hot-end heat exchanger 11 via the first water pipe 71. The first heat exchange component 24 in this application is a plate heat exchanger, located downstream of the heat storage device 23. The plate heat exchanger has four interfaces: a heat exchange inlet, a heat exchange outlet, a heating inlet, and a heating outlet. The heat exchange inlet and outlet are connected to the first water pipe 71, and the heating inlet and outlet are connected to the heating terminal 27. Water in the first water pipe 71 enters the plate heat exchanger through the heat exchange inlet, and after exchanging heat with the heating water (i.e., the second refrigerant) flowing in through the heating inlet, it flows out of the plate heat exchanger through the heat exchange outlet. The heating terminal 27 is a radiator or underfloor heating coil, storing heating water. The heating terminal 27 forms a circulation loop with the heating inlet and outlet via its inlet and outlet. The first pump body 31 is located on the first water pipe 71, more specifically at one end of the hot-end heat exchanger 11. Figure 1 The first water pipe 71 is located between the lower end of the plate heat exchanger and the circulation outlet of the plate heat exchanger. When the second pump body 32 starts, it drives the water to circulate between the hot end heat exchanger 11 and the heat storage device 23.

[0078] The second heat exchange component 25 is a plate heat exchanger, and it has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The second heat exchange flow path is located in the second water pipe 72, and one end of the second water pipe 72 ( Figure 1 The upper end shown is connected to one end of the hot-end heat exchanger 11. Figure 1The first water pipe 71 (shown at the upper end) is connected to the inlet 231 of the heat storage device 23. The other end of the second water pipe 72 is connected to the first water pipe 71 between the other end of the hot end heat exchanger 11 and one end of the first heat exchange component 24, specifically, it is connected to the first water pipe 71 between the first pump body 31 and one end (heat exchange outlet) of the first heat exchange component 24. The first valve body 91 is disposed on the first water pipe 71 between one end of the hot end heat exchanger 11 and one end of the second water pipe 72. The third pump body 33 and the second valve body 92 are disposed on the second water pipe 72.

[0079] The first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 both belong to the same outdoor heat exchanger. Preferably, both the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 are air-cooled heat exchangers. 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 inlet of the first outdoor heat exchange section 21 (… Figure 1 (shown as upper port) and outlet ( Figure 1 The lower port shown is circulated with the cold-end heat exchanger 12 through the first cooling pipe 73, and the first refrigerant is filled in the first cooling pipe 73. The first fan 61 can simultaneously act on the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22. In other words, when the first fan 61 is started, it can drive the surrounding outdoor air to flow through the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 simultaneously or sequentially. The second pump body 32 is provided in the first cooling pipe 73. When the second pump body 32 is started, it drives the first refrigerant to circulate between the first outdoor heat exchange section 21 and the cold-end heat exchanger 12. In this application, the first refrigerant is selected from refrigerants with a freezing point of less than or equal to 0°C, and more preferably from refrigerants with a freezing point of less than or equal to -40°C, such as brine, ethylene glycol, methanol, ethanol, or a mixed solution of ethylene glycol, methanol, ethanol and water.

[0080] The compressor 4, the first heat exchange flow path, the throttling element 5, and the second outdoor heat exchange section 22 are connected by a refrigerant pipe 74, forming a refrigerant circulation. Specifically, the discharge port of the compressor 4 is connected to one end of the first heat exchange flow path ( Figure 1 The right end shown is connected, and the other end of the first heat exchange flow path ( Figure 1 The left end shown) and one end of the throttling element 5 ( Figure 1 The right end shown is connected, and the other end of the throttling element 5 ( Figure 1 The left end shown) and one end of the second outdoor heat exchange section 22 (shown) Figure 1 The upper end shown is connected to the other end of the second outdoor heat exchange section 22. Figure 1 The lower end (as shown) is connected to the air intake of compressor 4.

[0081] The following is combined with Figure 1This paper provides a brief introduction to the working principle of the first implementation method of a multi-unit heat pump.

[0082] like Figure 1 As shown, when the outdoor ambient temperature is low and there is a need for domestic hot water production and heating indoors, the thermoacoustic machine 1 starts, the compressor 4 stops, the first fan 61, the first pump body 31, and the second pump body 32 start operation, the third pump body 33 stops, the first valve body 91 opens, and the second valve body 92 closes. 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 second pump body 32 drives the first refrigerant to circulate between the cold-end heat exchanger 12 and the first outdoor heat exchange section 21. When the first refrigerant passes through the cold-end heat exchanger 12, it absorbs the cold in the cold-end heat exchanger 12 and cools down. When the first refrigerant continues to flow through the first outdoor heat exchange section 21, it exchanges heat with the air flow in the outdoor environment, absorbs heat from the outdoor environment and warms up, and so on. The first pump body 31 drives water to circulate between the heat storage device 23, the first heat exchange component 24, and the hot-end heat exchanger 11. When the water passes through the hot-end heat exchanger 11, it absorbs heat from the heat exchanger 11 and becomes hot, then returns to the heat storage device 23, thus producing domestic hot water. When the water flows through the first heat exchange component 24, it exchanges heat with the heating water to achieve indoor heating.

[0083] When the outdoor ambient temperature is high and there is a need for domestic hot water production and heating indoors, the thermoacoustic unit 1 stops, the compressor 4 starts, the throttling element 5 opens to a certain degree, the first fan 61 and the third pump 33 start, the first pump 31 and the second pump 32 stop, the first valve 91 closes, and the second valve 92 opens. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 4 first passes through the first heat exchange path of the second heat exchange component 25. In the first heat exchange path, the refrigerant exchanges heat with the water in the second heat exchange path, and the water temperature rises. Driven by the third pump 33, the water circulates between the second heat exchange path, the heat storage device 23, and the first heat exchange component 24. When the water passes through the heat storage device 23, the water temperature in the heat storage device 23 rises, realizing the production of domestic hot water. When the water flows through the first heat exchange component 24, it exchanges heat with the heating water, realizing indoor heating. After heat exchange, the refrigerant cools down and depressurizes to form a liquid. The liquid refrigerant is throttled and depressurized by the throttling element 5 and becomes a low-temperature, low-pressure gas-liquid mixture refrigerant. The low-temperature, low-pressure gas-liquid mixture refrigerant enters the second outdoor heat exchange section 22 to exchange heat with the air flow in the outdoor environment. It absorbs heat from the outdoor environment and becomes hot and pressurized to become a gaseous refrigerant. The gaseous refrigerant flows back to the compressor 4 to continue participating in the cycle.

[0084] The above configuration, where the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 belong to the same outdoor heat exchanger, achieves a high degree of integration and functional reuse of the outdoor heat exchanger, thereby reducing the structural complexity of the heat pump and improving its integration level. The freezing point of the first refrigerant is less than or equal to -40℃, which helps improve the operational stability of the multi-unit heat pump under low or even ultra-low temperature outdoor conditions. By setting the first valve body 91, the second valve body 92, and the third pump body 33, the water flow direction can be controlled, avoiding water energy loss and improving the heat pump's operating efficiency.

[0085] The following reference Figure 2 The second embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0086] like Figure 2 As shown, compared to the first embodiment, the second embodiment mainly adds a second bypass pipe 76, a third valve body 93, and a fourth valve body 94. Specifically, the two ends of the second bypass pipe 76 are connected to the inlet 231 and outlet 232 of the heat storage device 23, respectively. More specifically, one end of the second bypass pipe 76 ( Figure 2 The upper end shown is connected to the second water pipe 72 and is located at one end of the second water pipe 72. Figure 2 The second bypass pipe 76 is connected to the first water pipe 71 between the outlet 232 of the heat storage device 23 and the first heat exchange component 24. The third valve body 93 is located at the inlet 231 of the heat storage device 23, more specifically at one end of the inlet 231 of the heat storage device 23 and the second water pipe 72. Figure 2 The fourth valve body 94 is located on the first water pipe 71 between the upper end shown in the figure and the second bypass pipe 76.

[0087] Thus, by setting up the second bypass pipe 76, the third valve body 93, and the fourth valve body 94, the flow direction of water can be controlled using the second bypass pipe 76 and the two valve bodies, enabling the independent operation of the first heat exchange component 24. For example, when only heating is needed, the fourth valve body 94 is opened and the third valve body 93 is closed. At this time, water can circulate between the hot-end heat exchanger 11 and the first heat exchange component 24, or circulate with the first heat exchange component 24 in the second heat exchange flow path.

[0088] The following reference Figures 3 to 6 The third embodiment of the multi-unit heat pump of this application will be described.

[0089] like Figure 3As shown, based on the second embodiment, this embodiment mainly adds a second fan 62 and a four-way valve 8. Specifically, in addition to having a first heat exchange flow path and a second heat exchange flow path, the second heat exchange flow path and the second heat exchange flow path can also exchange heat with the indoor air flow, thereby enabling the second heat exchange component 25 to also be used for indoor cooling or heating. The second fan 62 is provided corresponding to the second heat exchange component 25. When the second fan 62 is started, it can drive the indoor air flow through the first heat exchange flow path or the second heat exchange flow path to exchange heat with the refrigerant or water. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the second heat exchange component 25, one end of the second outdoor heat exchange section 22, and the suction port of the compressor 4. Specifically, the four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the first heat exchange flow path (… Figure 3 (shown at the right end), one end of the second outdoor heat exchange section 22 (as shown on the right end) Figure 3 (As shown at the lower end) is connected to the suction port of compressor 4.

[0090] Thus, by setting up a second fan 62, the second heat exchange component 25 can be used as a heat exchanger for indoor cooling or heating, realizing the tri-generation function of the heat pump. By setting up a four-way valve 8, multi-mode operation of the heat pump can be achieved, further expanding the application scenarios of the heat pump.

[0091] The following is combined with Figures 4 to 6 The operating principle of the multi-unit heat pump in this embodiment will be briefly introduced.

[0092] like Figure 4As shown, when the outdoor ambient temperature is low and there is a demand for domestic hot water production, heating, and warmth indoors, the thermoacoustic unit 1 operates independently, the compressor 4 stops, the first fan 61, the second fan 62, the first pump body 31, and the second pump body 32 start operating, the third pump body 33 stops, the first valve body 91, the second valve body 92, and the third valve body 93 open, and the fourth valve body 94 closes. During the operation of the thermoacoustic unit 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 second pump body 32 drives the first refrigerant to circulate between the cold-end heat exchanger 12 and the first outdoor heat exchange section 21. When the first refrigerant passes through the cold-end heat exchanger 12, it absorbs the cold energy in the cold-end heat exchanger 12 and cools down. When the first refrigerant continues to flow through the first outdoor heat exchange section 21, it exchanges heat with the air flow in the outdoor environment, absorbs heat from the outdoor environment and warms up, and so on. The first pump body 31 drives water to circulate between the heat storage device 23, the first heat exchange component 24, the second heat exchange flow path, and the hot-end heat exchanger 11. When the water passes through the hot-end heat exchanger 11, it absorbs heat from the heat exchanger 11 and its temperature rises. Then the water returns to the heat storage device 23, thus producing domestic hot water. When the water flows through the first heat exchange component 24, it exchanges heat with the heating water to achieve indoor heating. When the water flows through the second heat exchange flow path, it exchanges heat with the indoor air to achieve indoor heating. Of course, when indoor heating is not needed, the fourth valve body 94 and the second fan 62 can be closed. When heating is not needed, the circulation of heating water can be stopped. When domestic hot water production is not needed, the third valve body 93 can be closed and the second valve body 92 and / or the fourth valve body 94 can be opened accordingly.

[0093] like Figure 5As shown, when the outdoor ambient temperature is high and there is a demand for domestic hot water production, heating, and heating indoors, the thermoacoustic unit 1 stops, the compressor 4 operates independently, the first fan 61, the second fan 62, and the third pump 33 start running, the first pump 31 and the second pump 32 stop, the second valve 92 and the third valve 93 open, and the first valve 91 and the fourth valve 94 close. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 4 first passes through the first heat exchange path of the second heat exchange component 25. In the first heat exchange path, the refrigerant exchanges heat with air and water in the second heat exchange path. The refrigerant exchanges heat with air, raising the indoor air temperature and achieving indoor heating. The refrigerant exchanges heat with water, raising the water temperature. Driven by the third pump 33, water circulates between the second heat exchange path, the heat storage device 23, and the first heat exchange component 24. When water passes through the heat storage device 23, the water temperature inside the heat storage device 23 rises, achieving the production of domestic hot water. When water flows through the first heat exchange component 24, it exchanges heat with the heating water to achieve indoor heating. After heat exchange, the refrigerant cools and depressurizes to form a liquid. The liquid refrigerant is then throttled and depressurized by the throttling element 5, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure gas-liquid mixture enters the second outdoor heat exchange section 22 to exchange heat with the outdoor airflow, absorbing heat from the outdoor environment and increasing in temperature and pressure to become a gaseous refrigerant. The gaseous refrigerant then flows back to the compressor 4 to continue circulating. Of course, when indoor heating is not required, the second fan 62 can be turned off. When domestic hot water production is not required, the third valve can be closed and the fourth valve opened. When heating is not required, the circulation of heating water can be stopped.

[0094] Finally refer to Figure 6 When there is a cooling demand indoors, the four-way valve 8 reverses, the thermoacoustic motor 1 stops, the compressor 4 operates independently, the first fan 61 and the second fan 62 start running, and the first pump body 31, the second pump body 32, and the third pump body 33 stop. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 4 first passes through the second outdoor heat exchange section 22. In the second outdoor heat exchange section 22, the refrigerant exchanges heat with the outdoor ambient air, cooling and depressurizing to form a liquid. The liquid refrigerant is then throttled and depressurized by the throttling element 5, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure gas-liquid mixture enters the first circulation path of the second heat exchange component 25 to exchange heat with the indoor air, absorbing heat from the indoor air and rising in temperature, thus lowering the indoor air temperature and achieving indoor cooling. The refrigerant, after absorbing heat and rising in temperature, becomes a gaseous refrigerant, which flows back to the compressor 4 to continue the cycle.

[0095] The following reference Figure 7 The fourth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0096] like Figure 7As shown, based on the second embodiment, this embodiment of the multi-unit heat pump mainly adds an indoor heat exchanger 28, a second fan 62, and a four-way valve 8. Specifically, the indoor heat exchanger 28 is an air-cooled heat exchanger, preferably a finned heat exchanger, which is installed on the refrigerant pipeline 74 between the exhaust port of the compressor 4 and the throttling element 5, and more specifically, at one end of the first heat exchange flow path. Figure 7 The refrigerant pipe 74 between the left end shown and the throttling element 5. The second fan 62 is set corresponding to the indoor heat exchanger 28. When the second fan 62 is started, it drives the indoor air to flow through the indoor heat exchanger 28. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the second heat exchange component 25, one end of the second outdoor heat exchange component 22, and the suction port of the compressor 4. Specifically, the four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the first heat exchange flow path (… Figure 7 (shown at the right end), one end of the second outdoor heat exchange section 22 (as shown on the right end) Figure 7 (As shown at the lower end) is connected to the suction port of compressor 4.

[0097] Thus, by setting up an indoor heat exchanger 28, the function of a three-generation system can also be achieved. The specific working principle can be referred to the above implementation method, and will not be repeated in this implementation method.

[0098] The following reference Figure 8 The fifth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0099] like Figure 8As shown, based on the second embodiment, this embodiment of the multi-unit heat pump mainly adds a third heat exchange component 26, an indoor heat exchanger 28, a second fan 62, a third bypass pipe 77, a fifth valve body 95, and a four-way valve 8. Specifically, the third heat exchange component 26 is a plate heat exchanger, which is installed on the first water pipe 71 and located downstream of the first heat exchange component 24. In other words, the heat storage device 23, the first heat exchange component 24, and the third heat exchange component 26 are sequentially arranged on the first water pipe 71 along the water flow direction. The plate heat exchanger has four interfaces: heat exchange inlet, heat exchange outlet, circulation inlet, and circulation outlet. The heat exchange inlet and heat exchange outlet are connected to the first water pipe 71, and the circulation inlet and circulation outlet are circulatedly connected to the indoor heat exchanger 28. Water in the first water pipe 71 enters the plate heat exchanger through the heat exchange inlet, and after exchanging heat with the circulating water (i.e., the third refrigerant) flowing in through the circulation inlet, it flows out of the plate heat exchanger through the heat exchange outlet. The indoor heat exchanger 28 is an air-cooled heat exchanger, preferably a finned heat exchanger, used to exchange heat with indoor air to achieve indoor cooling and heating. A second fan 62 is installed corresponding to the indoor heat exchanger 28; when the second fan 62 starts, it drives indoor air to flow through the indoor heat exchanger 28. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the second heat exchange component 25, one end of the second outdoor heat exchange section 22, and the suction port of the compressor 4. Specifically, the four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the first heat exchange flow path (… Figure 8 (shown at the right end), one end of the second outdoor heat exchange section 22 (as shown on the right end) Figure 8 (As shown at the lower end) is connected to the suction port of compressor 4.

[0100] The two ends of the third bypass pipe 77 are respectively connected to the ends of the heat storage device 23 and the first heat exchange component 24 that are far apart from each other. More specifically, one end of the third bypass pipe 77 is connected to the first water pipe 71 between the first heat exchange component 24 and the third heat exchange component 26, and the other end of the third bypass pipe 77 is connected to one end of the second bypass pipe 76. Figure 8 The fifth valve body 95 is located on the third bypass pipe 77, on the second water pipe 72 between the upper end shown and the second valve body 92.

[0101] Thus, the above configuration provides another specific configuration for a combined cooling, heating, and power (CCHP) system. By setting up a third bypass pipe 77 and a fifth valve body 95, the water flow direction can be controlled using the third bypass pipe 77, enabling the independent operation of the third heat exchange component 26. For example, when only indoor cooling / heating is needed, the fifth valve body 95 is opened, and the third valve body 93 and the fourth valve body 94 are closed. At this time, water can circulate between the hot-end heat exchanger 11 and the third heat exchange component 26, or circulate between the second heat exchange path and the third heat exchange component 26. The specific working principle is similar to the aforementioned implementation method, and will not be described again in this implementation method.

[0102] The following reference Figure 9 The sixth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0103] like Figure 9 As shown, based on the first embodiment, this embodiment mainly adjusts the setting position of the second heat exchange component 25, and accordingly omits the setting of the first valve body 91, the second valve body 92 and the third pump body 33, and adds a first bypass pipe 75 and a first valve section 96. Specifically, the second heat exchange flow path is set in the first water pipe 71 and is located at one end of the hot end heat exchanger 11 ( Figure 9 The upper end shown) and the water inlet 231 of the heat storage device 23 Figure 9 The first pump body 31 is disposed between the first water pipe 71 and the other end of the hot end heat exchanger 11 (as shown above). Figure 9 The lower end shown) and the heat exchange outlet of the first heat exchange component 24 (shown below) Figure 9 Between the lower left port shown.

[0104] The two ends of the first bypass pipe 75 are respectively connected to the two ends of the hot-end heat exchanger 11. Specifically, one end of the first bypass pipe 75 ( Figure 9 The upper end shown is connected to one end of the hot-end heat exchanger 11. Figure 9 The upper end shown) and one end of the second heat exchange flow path ( Figure 9 On the first water pipe 71 between the left end shown, the other end of the first bypass pipe 75 (shown on the left) Figure 9 The lower end shown is connected to the other end of the hot-end heat exchanger 11. Figure 9 The lower end of the water pipe 71 is located between the first water pipe 71 and the first pump body 31.

[0105] The first valve section 96 is configured to selectively control the flow of water through the first bypass pipe 75 or the hot-end heat exchanger 11. Specifically, the first valve section 96 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 first bypass pipe 75, 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 hot-end heat exchanger 11, the other end of the first bypass pipe 75, and the first pump body 31. The two three-way control valves are configured to selectively control the flow of water through the first bypass pipe 75 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.

[0106] Thus, heat can be provided to the heat storage device 23 or the first heat exchanger 24 through the hot-end heat exchanger 11 or the second heat exchange component 25. Furthermore, during operation, the water flow direction can be adjusted by opening and closing the first bypass pipe 75 and the first valve 96 to prevent water from flowing through the hot-end heat exchanger 11 and causing additional heat loss. The specific operating principle of this embodiment can be found in the above embodiments, and will not be repeated here.

[0107] The following reference Figure 10 The seventh embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0108] like Figure 10 As shown, based on the sixth embodiment, this embodiment mainly adds a second fan 62 and a four-way valve 8. Specifically, in addition to having a first heat exchange flow path and a second heat exchange flow path, the second heat exchange component 25 can also exchange heat with the indoor air flow, thereby enabling the second heat exchange component 25 to be used for indoor cooling or heating. The second fan 62 is provided corresponding to the second heat exchange component 25. When the second fan 62 is started, it can drive the indoor air flow through the first heat exchange flow path or the second heat exchange flow path to exchange heat with the refrigerant or water. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the second heat exchange component 25, one end of the second outdoor heat exchange section 22, and the suction port of the compressor 4. Specifically, the four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the first heat exchange flow path (… Figure 10 (shown at the right end), one end of the second outdoor heat exchange section 22 (as shown on the right end) Figure 10 (As shown at the lower end) is connected to the suction port of compressor 4.

[0109] Thus, by setting up a second fan 62, the second heat exchange component 25 can be used as a heat exchanger for indoor cooling or heating, realizing the tri-generation function of the heat pump. By setting up a four-way valve 8, multi-mode operation of the heat pump can be achieved, further expanding the application scenarios of the heat pump. The specific operating principle of this embodiment can be referred to the above embodiment, and will not be repeated here.

[0110] The following reference Figure 11 The eighth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0111] like Figure 11 As shown, based on the sixth embodiment, this embodiment mainly adds an indoor heat exchanger 28, a second fan 62, and a four-way valve 8. Specifically, the indoor heat exchanger 28 is an air-cooled heat exchanger, preferably a finned heat exchanger, which is installed on the refrigerant pipeline 74 between the exhaust port of the compressor 4 and the throttling element 5, and more specifically, at one end of the first heat exchange flow path. Figure 7The refrigerant pipe 74 between the left end shown and the throttling element 5. The second fan 62 is set corresponding to the indoor heat exchanger 28. When the second fan 62 is started, it drives the indoor air to flow through the indoor heat exchanger 28. The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the second heat exchange component 25, one end of the second outdoor heat exchange component 22, and the suction port of the compressor 4. Specifically, the four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 4, one end of the first heat exchange flow path (… Figure 11 (shown at the right end), one end of the second outdoor heat exchange section 22 (as shown on the right end) Figure 11 (As shown at the lower end) is connected to the suction port of compressor 4.

[0112] Thus, by setting up an indoor heat exchanger 28, the function of a three-generation system can also be achieved. The specific working principle can be referred to the above implementation method, and will not be repeated in this implementation method.

[0113] The following reference Figure 12 The ninth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0114] like Figure 12 As shown, based on the sixth embodiment, this embodiment mainly adds a third heat exchange component 26, an indoor heat exchanger 28, and a second fan 62. Specifically, the third heat exchange component 26 is a plate heat exchanger, which is installed on the first water pipe 71 and located downstream of the first heat exchange component 24. In other words, the heat storage device 23, the first heat exchange component 24, and the third heat exchange component 26 are sequentially arranged on the first water pipe 71 along the water flow direction. The plate heat exchanger has four interfaces: heat exchange inlet, heat exchange outlet, circulation inlet, and circulation outlet. The heat exchange inlet and heat exchange outlet are connected to the first water pipe 71, and the circulation inlet and circulation outlet are circulatedly connected to the indoor heat exchanger 28. Water in the first water pipe 71 enters the plate heat exchanger through the heat exchange inlet, and after exchanging heat with the circulating water (i.e., the third refrigerant) flowing in through the circulation inlet, it flows out of the plate heat exchanger through the heat exchange outlet. The indoor heat exchanger 28 is an air-cooled heat exchanger, preferably a finned heat exchanger, which is used to exchange heat with indoor air to achieve indoor cooling and heating. The second fan 62 is provided corresponding to the indoor heat exchanger 28. When the second fan 62 is started, it drives indoor air to flow through the indoor heat exchanger 28.

[0115] Thus, the above configuration provides another three-way configuration for heat pumps, and the specific working principle of the above implementation method will not be elaborated here.

[0116] The following reference Figure 13 and Figure 14 The tenth embodiment of the multi-unit heat pump of this application will be briefly introduced.

[0117] like Figure 13 and Figure 14As 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 14 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 13 The first outdoor heat exchange section 21 exchanges heat with the two cold-end heat exchangers 12 through a first refrigerant. The inlet 231 and outlet 232 are circulatedly connected to the two hot-end heat exchangers 11 through a first water pipe 71. Specifically, the inlet of the first outdoor heat exchange section 21 (… Figure 13 The upper port shown is simultaneously connected to one end of both cold-end heat exchangers 12. Figure 13 The upper end shown is connected to the outlet of the first outdoor heat exchange section 21. Figure 13 The lower port shown is simultaneously connected to the other end of the two cold-end heat exchangers 12. Figure 13 The lower end of the pump body 31 is connected to the first end of the two hot end heat exchangers 11, forming a parallel structure similar to that in electrical circuits. The outlet of the first pump body 31 is simultaneously connected to the first end of the two hot end heat exchangers 11. Figure 13 The lower end shown is connected to the inlet 231 of the heat storage device 23. Figure 13 The upper end shown) is simultaneously connected to the second end of the two hot-end heat exchangers 11 ( Figure 13 The upper end of the heat exchanger is connected, and the two hot end heat exchangers 11 form a structure similar to "parallel" in electrical circuits.

[0118] 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.

[0119] By placing the two thermoacoustic units within the same housing 14 and separating the heat exchange sections by a partition 16, the manufacturing process can be simplified, eliminating the need for specific design of the interior of the housing 14. 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.

[0120] 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.

[0121] For example, in an alternative embodiment, although the above embodiment is described with the first outdoor heat exchange unit 21 and the second outdoor heat exchange unit 22 both being air-cooled heat exchangers, 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 all the heat exchangers are liquid-cooled heat exchangers, the corresponding fan can be omitted.

[0122] For example, in another alternative embodiment, the arrangement of the first outdoor heat exchange unit 21 and the second outdoor heat exchange unit 22 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.

[0123] For example, in another alternative embodiment, the arrangement of the first outdoor heat exchange unit 21 being circulatedly connected to the cold-end heat exchanger 12 via the first refrigerant pipe 73 is merely exemplary. Those skilled in the art can adjust it to suit more specific application scenarios. For instance, the first outdoor heat exchange unit 21 may be a heat pipe heat exchanger, with its evaporator end exchanging heat with the outdoor environment, such as through a fan. The condenser end of the heat pipe heat exchanger exchanges heat with the cold-end heat exchanger 12, such as by contacting the condenser end with the cold-end heat exchanger 12. 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 in the first outdoor heat exchange unit 21, the heat exchange effect can be improved, and the first pump body 31 can be omitted, reducing the cost of the heat pump installation.

[0124] For example, a loop heat pipe can be formed between the first outdoor heat exchange section 21 and the cold-end heat exchanger 12 via a pipeline, with the first refrigerant filling the loop heat pipe. In this case, the condenser of the loop heat pipe is the cold-end heat exchanger 12. The gaseous first refrigerant exchanges heat with the cold air in the condenser and cools down to liquefy. A capillary structure needs to be installed in the loop heat pipe to provide a pressure drop. The evaporator of the loop heat pipe is the first outdoor heat exchange section 21, where the liquid first refrigerant exchanges heat with the outdoor air and heats up to vaporize. The first refrigerant, which can be ammonia solution, Freon, water, etc., fills the loop heat pipe. The loop heat pipe formed between the first outdoor heat exchange section 21 and the cold-end heat exchanger 12 is easy to install, eliminates the need for the first pump body 31, and is suitable for long-distance refrigerant transmission.

[0125] For example, in another alternative implementation, although some of the above implementations are described in conjunction with the indoor heat exchanger 28 being an air-cooled heat exchanger, the specific form of the indoor heat exchanger 28 is not unique, and those skilled in the art can adjust it, as long as the adjusted indoor heat exchanger 28 can achieve indoor cooling and heating.

[0126] For example, in another alternative embodiment, the arrangement of the heat storage device 23 is not unique, and those skilled in the art can adjust it. For instance, the domestic water tank can also be replaced by a water heater with an inlet and an outlet, which are directly connected to the hot-end heat exchanger 11.

[0127] For example, in addition to plate heat exchangers, the first heat exchange component 24 and the third heat exchange component 26 can also be shell-and-tube heat exchangers or coil heat exchangers. When using a coil heat exchanger, it can be connected to the first water pipe 71 and installed in the heating terminal 27, such as in a heating water tank. Alternatively, the first heat exchange component 24 or the third heat exchange component 26 can be directly installed in the heat storage device 23, utilizing the water in the heat storage device 23 to achieve heat exchange with the first heat exchange component 24.

[0128] For example, although the above embodiments are described with the example of the heat storage device 23 being a domestic water tank and the first heat exchange component 24 being a plate heat exchanger, the specific forms of the heat storage device 23 and the first heat exchange component 24 can be interchanged. That is, the heat storage device 23 can be used for heating and the first heat exchange component 24 can be used for domestic water. For example, the heat storage device 23 can be a heating water tank, and the heating water tank and the heating terminal 27 are circulated and connected.

[0129] For example, the specific forms of the first heat exchange component 24 and the third heat exchange component 26 are not unique, and those skilled in the art can adjust them, as long as they meet the condition of being able to exchange heat with the first water pipe 71. For example, the first heat exchange component 24 can also be used for indoor cooling and heating, that is, the first heat exchange component 24 is in cyclic communication with the indoor heat exchanger 28. For another example, the third heat exchange component 26 can also be used for heating, that is, the third heat exchange component 26 can be a heating heat exchanger, which is installed in the heating water tank to heat the water in the heating water tank.

[0130] For example, the positions of the heat storage device 23, the first heat exchange component 24, and the third heat exchange component 26 are not fixed and can be adjusted by those skilled in the art based on specific application scenarios. For instance, the heat storage device 23 can also be located downstream of the first heat exchange component 24, and the order of the heat storage device 23, the first heat exchange component 24, and the third heat exchange component 26 can be arbitrarily adjusted.

[0131] For example, in another alternative embodiment, although the above embodiments are described with the example of a first refrigerant having a freezing point of less than or equal to -40°C, the specific selection of the first refrigerant is not fixed, and those skilled in the art can make the selection based on the specific application scenario. For example, in areas with high outdoor ambient temperatures, water can also be selected as the first refrigerant, or other refrigerants with a freezing point of less than or equal to 0°C can be used.

[0132] 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.

[0133] For example, in another alternative embodiment, although the above-described embodiments are described in conjunction with the first bypass pipe 75 and the first valve section 96, the provision of the first bypass pipe 75 is not mandatory in this embodiment. Those skilled in the art can choose whether to provide the first bypass pipe 75 based on the specific application scenario. For example, in other embodiments, the first bypass pipe 75 can be omitted. Furthermore, the first valve section 96 is described in conjunction with 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, such as adjusting it to an on / off valve group or providing only one three-way control valve.

[0134] For example, in another alternative embodiment, the specific implementation of the first valve body 91, second valve body 92, third valve body 93, fourth valve body 94, and fifth valve body 95 provided in the above-mentioned partial embodiments 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 instance, some valve body combinations can also be replaced by three-way valves, and the first valve body 91 and second valve body 92 can be selectively omitted.

[0135] For example, in another alternative embodiment, the third valve body 93 in the above embodiment can also be set at the outlet 232 of the heat storage device 23, that is, on the first water pipe 71 between the outlet 232 of the heat storage device 23 and the first heat exchange component 24, which can also play the same role.

[0136] For example, the connection position of the second bypass pipe 76 is not fixed. In other embodiments, one end of the second bypass pipe 76 can also be connected to the first water pipe 71 between the third valve body 93 and one end of the second water pipe 72. In other words, as long as both ends of the second bypass pipe 76 are connected to the inlet 231 and outlet 232 of the heat storage device 23 respectively, the purpose of water flow bypassing the heat storage device 23 can be achieved.

[0137] Similarly, the connection position of the third bypass pipe 77 can also be adjusted. For example, one end of the third bypass pipe 77 can also be connected to the first water pipe 71 between the third valve body 93 and one end of the second water pipe 72. In other words, as long as both ends of the second bypass pipe 76 are connected to the ends of the heat storage device 23 and the first heat exchange component 24 that are far apart from each other ( Figure 8 The water inlet 231 of the thermal storage device 23 and the heat exchange outlet of the first heat exchange component 24 can be used to allow water to bypass the thermal storage device 23 and the first heat exchange component 24.

[0138] For example, in another alternative embodiment, although the tenth 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.

[0139] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the tenth embodiment 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.

[0140] For example, in another alternative implementation, although the tenth 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 way they are facing each other depends on the specific form of the heat exchange section. For example, when the hot end of the heat exchange section is located at the outermost edge of the thermoacoustic unit, the two hot ends can also be arranged to face each other.

[0141] 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.

[0142] For example, in another alternative embodiment, although the tenth 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 or 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 cold-end heat exchangers 12 before exchanging heat with the first outdoor heat exchange section 21, and the water passes through the two hot-end heat exchangers 11 before entering the heat storage device 23.

[0143] For example, in another alternative implementation, although the above implementation does not specifically describe the application scenarios of the heat pump, it is not unclear that the multi-generation heat pump of this application can be applied to both residential and commercial heat pump applications.

[0144] 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 tenth implementation method can also be applied to any implementation method other than the first implementation method.

[0145] 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.

[0146] 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 multi-unit heat pump, characterized in that, The multi-unit heat pump includes: A thermoacoustic machine, the thermoacoustic machine comprising a hot-end heat exchanger and a cold-end heat exchanger; The first outdoor heat exchange section and the second outdoor heat exchange section are connected to the cold end heat exchanger by a first refrigerant. A heat storage device for storing water, wherein the heat storage device is provided with an inlet and an outlet, and the inlet and outlet are circulatedly connected to the heat exchanger at the hot end through a first water pipeline. A first pump body is disposed in the first water pipeline; A first heat exchange component is disposed in the first water pipeline and the second refrigerant filled in the first heat exchange component can exchange heat with the water in the first water pipeline or the heat storage device. The compressor is circulated and connected to the second outdoor heat exchange unit via a refrigerant pipeline; A throttling element is disposed between the exhaust port of the compressor and the second outdoor heat exchange section; The second heat exchange component has a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is disposed between the exhaust port of the compressor and the throttling element, and the second heat exchange flow path is directly or indirectly connected to the first water pipe.

2. The multi-unit heat pump according to claim 1, characterized in that, The multi-unit heat pump further includes a first fan, and at least one of the first outdoor heat exchange section and the second outdoor heat exchange section is an air-cooled heat exchanger; and / or The first outdoor heat exchange section and the second outdoor heat exchange section are independent of each other or belong to different parts of the same outdoor heat exchanger.

3. The multi-unit heat pump according to claim 1, characterized in that, The first outdoor heat exchange section is circulatedly connected to the cold-end heat exchanger via a first refrigerant pipeline. The multi-unit heating pump further includes a second pump body, which is disposed in the first refrigerant pipeline, and the first refrigerant is filled in the first refrigerant pipeline; or The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and the first refrigerant is filled in the heat pipe heat exchanger; or The first outdoor heat exchange section and the cold 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 multi-unit heat pump according to claim 1, characterized in that, The heat storage device is a water heater or a domestic water tank, and the first heat exchange component is a plate heat exchanger, a shell-and-tube heat exchanger, or a coil heat exchanger; and / or The heat storage device is located upstream of the first heat exchange component.

5. The multi-unit heat pump according to claim 1, characterized in that, The multi-connector heat pump 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 second heat exchange component, one end of the second outdoor heat exchange component, and the intake port of the compressor.

6. The multi-unit heat pump 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 first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant. The water inlet and outlet are circulatedly connected to the two hot-end heat exchangers through the first water pipeline.

7. The multi-unit heat pump according to claim 6, characterized in that, The two thermoacoustic units are disposed within the same housing, and the two heat exchange sections are either interconnected or separated by a partition; and / or The two cold-end heat exchangers are positioned opposite each other.

8. The multi-unit heat pump according to claim 1, characterized in that, The second heat exchange flow path is located in the first water pipeline.

9. The multi-unit heat pump according to claim 8, characterized in that, The multi-unit heat pump also includes a first bypass pipeline, the two ends of which are respectively connected to the two ends of the hot end heat exchanger. The multi-unit heat pump also includes a first valve, which is configured to selectively control the flow of water through the first bypass pipeline or the hot end heat exchanger.

10. The multi-unit heat pump according to claim 1, characterized in that, The multi-unit heat pump also includes a second water pipeline, the second heat exchange flow path is disposed in the second water pipeline, one end of the second water pipeline is connected to a first water pipeline between one end of the hot end heat exchanger and one end of the heat storage device, and the other end of the second water pipeline is connected to a first water pipeline between the other end of the hot end heat exchanger and one end of the first heat exchange component.

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