Thermoacoustic heat pump device

Abstract

The utility model relates to the technical field of heat pumps, in particular to a thermo-acoustic heat pump device. The heat pump heating system aims at solving the problems that a traditional heat pump heating system is low in energy efficiency and even cannot work at the low environment temperature. For this purpose, the thermo-acoustic heat pump device of the present application comprises: a thermo-acoustic machine having a cold-end heat exchanger and a hot-end heat exchanger; the outdoor heat exchanger exchanges heat with the cold end heat exchanger through a first secondary refrigerant; the first heat exchange component exchanges heat with the hot end heat exchanger through a second refrigerating medium; and the second heat exchange component exchanges heat with the hot end heat exchanger through a second refrigerating medium. According to the thermo-acoustic heat pump device, efficient utilization at the low environment temperature can be achieved, dual combined supply of the thermo-acoustic heat pump device is achieved, and compared with traditional steam compression refrigeration, the thermo-acoustic heat pump device has the obvious advantage in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a thermoacoustic heat pump device. Background Art

[0002] A heat pump is a device that transfers heat energy from a low-grade heat source to a higher-grade heat source. It's a new energy technology attracting significant attention worldwide. Heat pumps typically extract low-grade heat energy from natural sources like air, water, or soil, generate electrical work, and then provide usable, high-grade heat energy.

[0003] For traditional steam compression heat pumps, as the ambient temperature drops, the evaporation pressure of the system drops, which not only reduces the heating amount and efficiency, but in severe cases, it can also cause the compressor's pressure ratio and exhaust temperature to exceed the standard, making the system unable to work.

[0004] Accordingly, this field requires a new technical solution to solve the above problems. Utility Model Content

[0005] In order to solve at least one of the above problems in the prior art, that is, to solve the problem that traditional heat pump heating systems have low energy efficiency or even cannot work at low ambient temperatures, the present application provides a thermoacoustic heat pump device, which includes:

[0006] A thermoacoustic engine having a cold end heat exchanger and a hot end heat exchanger;

[0007] an outdoor heat exchanger, wherein heat is exchanged between the outdoor heat exchanger and the cold-end heat exchanger via a first refrigerant;

[0008] a first heat exchange component, wherein heat is exchanged between the first heat exchange component and the hot end heat exchanger via a second coolant;

[0009] The second heat exchange component exchanges heat with the hot end heat exchanger via a second refrigerant.

[0010] The thermoacoustic heat pump device of the present application, by providing a thermoacoustic engine, can utilize the thermoacoustic effect of the thermoacoustic engine when it is operating to transfer heat from the cold-end heat exchanger to the hot-end heat exchanger. The cold-end heat exchanger and the hot-end heat exchanger are then used to exchange heat with the outdoor heat exchanger, the first heat exchange component, and the second heat exchange component, respectively, to replace the cold and heat generated by the thermoacoustic engine when it is operating and utilize them, ultimately achieving efficient utilization at low ambient temperatures and realizing the dual-generation of the thermoacoustic heat pump device. Moreover, because the heat transfer process is less affected by the external ambient temperature, the thermoacoustic heat pump device of the present application has a significant advantage in operating efficiency compared to traditional vapor compression refrigeration.

[0011] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the outdoor heat exchanger is an air-cooled heat exchanger, and the thermoacoustic heat pump device further includes a first fan, which is arranged corresponding to the outdoor heat exchanger; or

[0012] The outdoor heat exchanger is a liquid-cooled heat exchanger having a liquid-cooled inlet and a liquid-cooled outlet. The liquid-cooled heat exchanger is configured to be circulated and connected to a liquid-cooled source through the liquid-cooled inlet and the liquid-cooled outlet.

[0013] The outdoor heat exchanger is an air-cooled heat exchanger that can achieve heat exchange between the refrigerant and the environment. The outdoor heat exchanger is a liquid-cooled heat exchanger that can use other energy sources (such as water) to achieve heat exchange between the refrigerant.

[0014] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the outdoor heat exchanger is cyclically connected to the cold-end heat exchanger through a first pipeline, and the thermoacoustic heat pump device further includes a first pump body, the first pump body is arranged in the first pipeline, and the first refrigerant is filled in the first pipeline; or

[0015] The outdoor heat exchanger is a heat pipe heat exchanger, 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

[0016] A loop heat pipe is formed between the outdoor heat exchanger and the cold end heat exchanger through a pipeline, and the first refrigerant is filled in the loop heat pipe.

[0017] Using a heat pipe heat exchanger in the outdoor heat exchanger can improve heat transfer efficiency and reduce system installation costs. By forming a loop heat pipe between the outdoor heat exchanger and the cold end heat exchanger, installation is simple and suitable for long-distance refrigerant transmission.

[0018] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the first heat exchange component and the second heat exchange component are simultaneously connected to the hot end heat exchanger through a second pipeline. The thermoacoustic heat pump device also includes a second pump body, the second pump body is arranged in the second pipeline, and the second refrigerant is filled in the second pipeline.

[0019] The first heat exchange component and the second heat exchange component are simultaneously connected to the second pipeline, which can simplify the system structure and reduce the system complexity.

[0020] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the first heat exchange component is circulated and connected to the hot-end heat exchanger through a second pipeline, and the second heat exchange component is connected to the second pipeline through a third pipeline. One end of the third pipeline is connected between one end of the hot-end heat exchanger and the first end of the first heat exchange component, and the other end of the third pipeline is connected between the other end of the hot-end heat exchanger and the other end of the first heat exchange component. The thermoacoustic heat pump device also includes a second pump body, which is arranged in the second pipeline and located between one end of the hot-end heat exchanger and one end of the third pipeline. The second refrigerant is filled in the second pipeline and the third pipeline.

[0021] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device also includes a first valve body and a second valve body, the first valve body is arranged on the second pipeline between one end of the hot end heat exchanger and one end of the third pipeline, and the second valve body is arranged on the third pipeline.

[0022] By providing the first valve body and the second valve body, the flow direction of the coolant can be controlled, which is beneficial to reducing heat loss and improving system energy efficiency.

[0023] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the first heat exchange component is used for domestic hot water, and the second heat exchange component is used for heating.

[0024] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, when the first heat exchange component and the second heat exchange component are simultaneously connected to the hot-end heat exchanger through the second pipeline, the first heat exchange component is located upstream of the second heat exchange component; and / or

[0025] The first heat exchange component is a water tank or a heat exchange coil arranged in the water tank; and / or

[0026] The second heat exchange component is a plate heat exchanger, a shell and tube heat exchanger or a shell and tube heat exchanger.

[0027] The first heat exchange component is located on the upstream side of the second heat exchange component, which is conducive to taking into account the heat exchange effects of domestic hot water and heating, avoiding heat waste caused by different heating temperature requirements and domestic hot water temperature requirements, and improving the energy efficiency of the device.

[0028] In a preferred technical solution of the above-mentioned thermoacoustic heat pump device, the thermoacoustic heat pump device further includes a third heat exchange component, and heat is exchanged between the third heat exchange component and the hot-end heat exchanger via a second refrigerant.

[0029] By setting up the third heat exchange component, it is beneficial to realize the trigeneration of the thermoacoustic heat pump device and expand the application scenarios of the device.

[0030] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the thermoacoustic machine includes two thermoacoustic units opposite to each other, each of the thermoacoustic units includes a compression part and a heat exchange part, each of the heat exchange parts includes the hot-end heat exchanger, the regenerator and the cold-end heat exchanger, the outdoor heat exchanger exchanges heat with the two cold-end heat exchangers through the first refrigerant, the first heat exchange component exchanges heat with the two hot-end heat exchangers through the second refrigerant, and the second heat exchange component exchanges heat with the two hot-end heat exchangers through the second refrigerant.

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

[0032] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the two thermoacoustic units are arranged in the same housing, and the two heat exchange parts are connected to each other or separated by a partition; and / or

[0033] The two cold-end heat exchangers are opposite to each other.

[0034] Placing the two thermoacoustic units within the same housing, with the heat exchange sections separated by a partition, simplifies manufacturing and eliminates the need for specialized design within the housing. The interconnectedness of the two heat exchange sections reduces material costs, and the integrated design offers greater reliability and improved heat transfer.

[0035] In the preferred technical solution of the above-mentioned thermoacoustic heat pump device, the thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine.

[0036] Solution 1. A thermoacoustic heat pump device, characterized in that the thermoacoustic heat pump device comprises:

[0037] A thermoacoustic engine having a cold end heat exchanger and a hot end heat exchanger;

[0038] an outdoor heat exchanger, wherein heat is exchanged between the outdoor heat exchanger and the cold-end heat exchanger via a first refrigerant;

[0039] a first heat exchange component, wherein heat is exchanged between the first heat exchange component and the hot end heat exchanger via a second coolant;

[0040] The second heat exchange component exchanges heat with the hot end heat exchanger via a second refrigerant.

[0041] Option 2. The thermoacoustic heat pump device according to Option 1, characterized in that the outdoor heat exchanger is an air-cooled heat exchanger, and the thermoacoustic heat pump device further comprises a first fan, and the first fan is arranged corresponding to the outdoor heat exchanger; or

[0042] The outdoor heat exchanger is a liquid-cooled heat exchanger having a liquid-cooled inlet and a liquid-cooled outlet. The liquid-cooled heat exchanger is configured to be circulated and connected to a liquid-cooled source through the liquid-cooled inlet and the liquid-cooled outlet.

[0043] Solution 3. The thermoacoustic heat pump device according to Solution 1 is characterized in that the outdoor heat exchanger is in circulation communication with the cold-end heat exchanger via a first pipeline, and the thermoacoustic heat pump device further comprises a first pump body, the first pump body is disposed in the first pipeline, and the first refrigerant is filled in the first pipeline; or

[0044] The outdoor heat exchanger is a heat pipe heat exchanger, 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

[0045] A loop heat pipe is formed between the outdoor heat exchanger and the cold end heat exchanger through a pipeline, and the first refrigerant is filled in the loop heat pipe.

[0046] Option 4. The thermoacoustic heat pump device according to Option 1 is characterized in that the first heat exchange component and the second heat exchange component are simultaneously connected to the hot end heat exchanger through a second pipeline, and the thermoacoustic heat pump device also includes a second pump body, the second pump body is arranged in the second pipeline, and the second refrigerant is filled in the second pipeline.

[0047] Option 5. The thermoacoustic heat pump device according to Option 1 is characterized in that the first heat exchange component is connected to the hot-end heat exchanger in a circulation manner through a second pipeline, the second heat exchange component is connected to the second pipeline through a third pipeline, one end of the third pipeline is connected between one end of the hot-end heat exchanger and the first end of the first heat exchange component, and the other end of the third pipeline is connected between the other end of the hot-end heat exchanger and the other end of the first heat exchange component, the thermoacoustic heat pump device also includes a second pump body, the second pump body is arranged in the second pipeline and is located between one end of the hot-end heat exchanger and one end of the third pipeline, and the second refrigerant is filled in the second pipeline and the third pipeline.

[0048] Option 6. The thermoacoustic heat pump device according to Option 5 is characterized in that the thermoacoustic heat pump device also includes a first valve body and a second valve body, the first valve body is arranged on the second pipeline between one end of the hot end heat exchanger and one end of the third pipeline, and the second valve body is arranged on the third pipeline.

[0049] Solution 7. The thermoacoustic heat pump device according to any one of Solutions 4 to 6, characterized in that the first heat exchange component is used for domestic hot water, and the second heat exchange component is used for heating.

[0050] Solution 8. The thermoacoustic heat pump device according to Solution 7, characterized in that when the first heat exchange component and the second heat exchange component are simultaneously connected to the hot end heat exchanger through the second pipeline, the first heat exchange component is located upstream of the second heat exchange component; and / or

[0051] The first heat exchange component is a water tank or a heat exchange coil arranged in the water tank; and / or

[0052] The second heat exchange component is a plate heat exchanger, a shell and tube heat exchanger or a shell and tube heat exchanger.

[0053] Solution 9. The thermoacoustic heat pump device according to Solution 1 is characterized in that the thermoacoustic heat pump device further includes a third heat exchange component, and heat is exchanged between the third heat exchange component and the hot-end heat exchanger through a second refrigerant.

[0054] Option 10. The thermoacoustic heat pump device according to Option 1 is characterized in that the thermoacoustic engine includes two thermoacoustic units opposite to each other, each of the thermoacoustic units includes a compression part and a heat exchange part, each of the heat exchange parts includes the hot-end heat exchanger, the regenerator and the cold-end heat exchanger, the outdoor heat exchanger and the two cold-end heat exchangers exchange heat through the first refrigerant, the first heat exchange component and the two hot-end heat exchangers exchange heat through the second refrigerant, and the second heat exchange component and the two hot-end heat exchangers exchange heat through the second refrigerant.

[0055] Solution 11. The thermoacoustic heat pump device according to Solution 10, characterized in that the two thermoacoustic units are arranged in the same housing, and the two heat exchange parts are connected to each other or separated by a partition; and / or

[0056] The two cold-end heat exchangers are opposite to each other.

[0057] Solution 12. The thermoacoustic heat pump device according to Solution 1 is characterized in that the thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The present application is described below with reference to the accompanying drawings.

[0059] Figure 1 This is a system diagram of the first embodiment of the thermoacoustic heat pump device of the present application;

[0060] Figure 2 This is a system diagram of a second embodiment of the thermoacoustic heat pump device of the present application;

[0061] Figure 3 This is a system diagram of a third embodiment of the thermoacoustic heat pump device of the present application;

[0062] Figure 4 This is a schematic structural diagram of a thermoacoustic engine of a third embodiment of the thermoacoustic heat pump device of the present application.

[0063] Reference Signs List

[0064] 1. Thermoacoustic engine; 11. Hot-end heat exchanger; 12. Cold-end heat exchanger; 13. Regenerator; 14. Shell; 15. Compression unit; 16. Partition; 21. Outdoor heat exchanger; 22. First heat exchange component; 23. Second heat exchange component; 3. First fan; 41. First pipeline; 42. Second pipeline; 43. Third pipeline; 51. First pump body; 52. Second pump body; 6. Domestic hot water pipeline; 7. Heating pipeline; 81. First valve body; 82. Second valve body. DETAILED DESCRIPTION

[0065] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application.

[0066] It should be noted that, in the description of this application, terms such as "upper," "lower," "left," and "right" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, in the following description, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0068] First refer to Figure 1 , a brief introduction is given to the thermoacoustic heat pump device of this application.

[0069] like Figure 1As shown, to address the problem of low energy efficiency or even inability to operate in traditional heat pump heating systems at low ambient temperatures, the thermoacoustic heat pump device of the present application includes a thermoacoustic engine 1, an outdoor heat exchanger 21, a first heat exchange component 22, and a second heat exchange component 23. The thermoacoustic engine 1 has a cold-end heat exchanger 12 and a hot-end heat exchanger 11. Heat is exchanged between the outdoor heat exchanger 21 and the cold-end heat exchanger 12 via a first refrigerant, heat is exchanged between the first heat exchange component 22 and the hot-end heat exchanger 11 via a second refrigerant, and heat is exchanged between the second heat exchange component 23 and the hot-end heat exchanger 11 via the second refrigerant.

[0070] During one application, the thermoacoustic engine 1 operates, utilizing the thermoacoustic effect to generate cooling and heating in the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. A first refrigerant exchanges heat with the cold-end heat exchanger 12, displacing the heat from the cold-end heat exchanger 12 to the outdoor heat exchanger 21, where it is then discharged to the outdoor environment. A second refrigerant exchanges heat with the hot-end heat exchanger 11, displacing the heat from the hot-end heat exchanger 11 to the first and second heat exchange components 22 and 23. This allows for combined heat generation, such as domestic water and heating, through the first and second heat exchange components 22 and 23.

[0071] The thermoacoustic heat pump device of the present application, by providing a thermoacoustic engine 1, can utilize the thermoacoustic effect when the thermoacoustic engine 1 is working to achieve heat transfer from the cold-temperature end heat exchanger to the hot-temperature end heat exchanger, and then use the cold-end heat exchanger 12 and the hot-end heat exchanger 11 to exchange heat with the outdoor heat exchanger 21, the first heat exchange component 22, and the second heat exchange component 23 respectively, so as to replace the cold and heat generated by the thermoacoustic engine 1 when it is working and utilize them, ultimately achieving efficient utilization at low ambient temperatures and realizing dual supply. In addition, because the heat transfer process is less affected by the external ambient temperature, the thermoacoustic heat pump device of the present application has obvious advantages in working efficiency compared to traditional vapor compression refrigeration.

[0072] Further reference below Figure 1 , the first specific implementation method of the thermoacoustic heat pump device of the present application is introduced.

[0073] like Figure 1 As shown, in a specific embodiment, the thermoacoustic heat pump device of the present application is used in a household environment to provide hot water and heating for household users. The thermoacoustic heat pump device includes a thermoacoustic engine 1, an outdoor heat exchanger 21, a first heat exchange component 22, a second heat exchange component 23, a first fan 3, a first pipeline 41, a second pipeline 42, a first pump body 51, and a second pump body 52.

[0074] 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 resonance tube thermoacoustic machine. The resonance tube thermoacoustic machine can further include a traveling wave thermoacoustic machine, a standing wave thermoacoustic machine or a traveling standing wave thermoacoustic machine.

[0075] Whether it's a free-piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine, the basic principle is as follows: a chamber containing a compressible gas such as helium or nitrogen is installed within the thermoacoustic engine 1. A special acoustic structure is also incorporated into the thermoacoustic engine 1. A driving device (such as a linear compressor or linear motor) drives the piston to move back and forth at high speed, generating sound waves. As the sound waves propagate through the gas, a thermoacoustic effect is generated, causing the gas molecules to undergo periodic compression and expansion. The special acoustic structure allows the sound waves to produce strong compression and expansion in specific areas. During the compression phase, collisions between gas molecules increase, converting their kinetic energy into internal energy, causing the gas temperature to rise. During the expansion phase, the gas performs external work, reducing its internal energy and lowering its temperature. The resonant tube or acoustic resonant cavity enhances the effect of the sound waves. Due to the reflection and superposition of the sound waves, relatively stable compression and expansion regions are formed in specific areas, creating cold and hot ends within the chamber, respectively. Furthermore, by arranging a cold end heat exchanger 12 and a hot end heat exchanger 11 at the cold end and the hot end respectively, and arranging a regenerator between the two heat exchangers, the heat and cold can be extracted and utilized.

[0076] The outdoor heat exchanger 21 is an air-cooled heat exchanger, and the inlet of the air-cooled heat exchanger ( Figure 1 shown on the port) and outlet ( Figure 1 The first air blower 3 is connected to the cold end heat exchanger 12 through the first pipe 41, and the first refrigerant is filled in the first pipe 41. The first fan 3 is provided corresponding to the outdoor heat exchanger 21. When the first fan 3 is started, it drives the surrounding outdoor air to flow through the outdoor heat exchanger 21 and exchanges heat with the first refrigerant in the outdoor heat exchanger 21. The first pump body 51 is provided in the first pipe 41. When the first pump body 51 is started, it drives the first refrigerant to circulate between the outdoor heat exchanger 21 and the cold end heat exchanger 12. In the present application, the first refrigerant is selected from a refrigerant with a freezing point less than or equal to 0°C. More preferably, a refrigerant with a freezing point less than or equal to -40°C is selected, such as brine, ethylene glycol, methanol, ethanol, or a mixed solution of ethylene glycol, methanol, ethanol and water.

[0077] The first heat exchange component 22 and the second heat exchange component 23 are simultaneously connected to the hot end heat exchanger 11 through the second pipeline 42, and the second refrigerant is filled in the second pipeline 42. Specifically, the first heat exchange component 22 is a water tank for storing domestic hot water, which is provided with an inlet and outlet and a domestic hot water pipeline 6, and the inlet and outlet of the water tank are connected to the second pipeline 42. The second heat exchange component 23 is a plate heat exchanger, which has two flow paths that can exchange heat with each other, one of which is connected to the second pipeline 42, and the other is connected to the heating pipeline 7, such as a floor heating coil or a radiator. The second pump body 52 is provided in the second pipeline 42. When the second pump body 52 is started, it drives the second refrigerant to circulate between the first heat exchange component 22, the second heat exchange component 23 and the hot end heat exchanger 11. In the present application, the second refrigerant is preferably water.

[0078] Preferably, the first heat exchange component 22 is located upstream of the second heat exchange component 23. In other words, when the second pump 52 is activated, the second refrigerant in the hot-end heat exchanger 11 first passes through the first heat exchange component 22 and then through the second heat exchange component 23. Because the demand temperature for domestic hot water differs from the demand temperature for heating, with the heating demand temperature typically lower than the domestic hot water demand, the temperature of the second refrigerant decreases after it passes through the first heat exchange component 22 for heat exchange. At this point, the second refrigerant then enters the second heat exchange component 23, thereby meeting the temperature requirements for both domestic hot water and heating. Furthermore, when the thermoacoustic generator 1 is not operating, the domestic hot water stored in the water tank can also be used to achieve a heating cycle, thereby utilizing the water tank for flexible heating.

[0079] The following combination Figure 1 , briefly introduce the working principle of the above household air conditioner of this application. Figure 1As shown, in one embodiment, when domestic hot water and heating are required, the thermoacoustic machine 1, the first fan 3, the first pump body 51, and the second pump body 52 are started. During the operation of the thermoacoustic machine 1, heat and cold are generated by the thermoacoustic effect, and the heat and cold are absorbed by the hot-end heat exchanger 11 and the cold-end heat exchanger 12, respectively. The first pump body 51 drives the first refrigerant to circulate between the cold-end heat exchanger 12 and the outdoor heat exchanger 21. When the first refrigerant passes through the cold-end heat exchanger 12, it exchanges heat with the cold-end heat exchanger 12, absorbs the cold in the cold-end heat exchanger 12 and cools down. When the first refrigerant continues to flow through the outdoor heat exchanger 21, it exchanges heat with the air flow in the outdoor environment, absorbs heat in the outdoor environment and heats up, and the cycle continues. The second pump 52 drives the second refrigerant to circulate between the hot-end heat exchanger 11, the first heat exchange component 22, and the second heat exchange component 23. As the second refrigerant water passes through the hot-end heat exchanger 11, it exchanges heat with the hot-end heat exchanger 11, absorbing heat from the hot-end heat exchanger 11 and increasing its temperature. As the water continues to flow through the first heat exchange component 22, it mixes with the water in the water tank, causing the water in the tank to heat up. After some of the water in the water tank flows out, it flows into the second heat exchange component 23, where it exchanges heat with the water in the indoor heating coils, absorbing the cold energy from the water in the heating coils and cooling it. Consequently, the water temperature in the heating coils increases, achieving indoor heating.

[0080] In the above-mentioned configuration, the outdoor heat exchanger 21 is an air-cooled heat exchanger, which can realize heat exchange between the refrigerant and the environment. The freezing point of the first refrigerant is less than or equal to -40°C, which is conducive to improving the operating stability of the heat pump under low or even ultra-low outdoor conditions. The first heat exchange component 22 and the second heat exchange component 23 are simultaneously connected to the second pipeline 42, which can simplify the system structure and reduce the system complexity. The first heat exchange component 22 is located on the upstream side of the second heat exchange component 23, which is conducive to taking into account the heat exchange effects of domestic hot water and heating, avoiding heat waste caused by the different temperature requirements of heating and domestic hot water, and improving the energy efficiency of the device.

[0081] The following combination Figure 2 , the second specific implementation method of the thermoacoustic heat pump device of the present application is introduced.

[0082] like Figure 2 As shown, based on the first embodiment, this embodiment changes the connection method of the first heat exchange component 22 and the second heat exchange component 23, and correspondingly adds a first valve body 81 and a second valve body 82. Specifically, the first heat exchange component 22 is circulated and connected to the hot end heat exchanger 11 through the second pipeline 42, and the second heat exchange component 23 is connected to the second pipeline 42 through the third pipeline 43. Among them, one end of the third pipeline 43 ( Figure 2 The upper end shown) is connected to one end of the hot end heat exchanger 11 ( Figure 2 The upper end shown) and the first end of the first heat exchange component 22 ( Figure 2The second pipe 42 between the upper end shown in FIG, the other end of the third pipe 43 ( Figure 2 The lower end shown) is connected to the other end of the hot end heat exchanger 11 ( Figure 2 The lower end shown) and the other end of the first heat exchange component 22 ( Figure 2 The second pump body 52 is provided in the second pipe 42 and is located at one end of the hot end heat exchanger 11 ( Figure 2 The lower end shown) and one end of the third pipe 43 ( Figure 2 The second coolant is filled in the second pipe 42 and the third pipe 43 between the lower ends shown in FIG.

[0083] The first valve body 81 is provided at one end of the hot end heat exchanger 11 ( Figure 2 The upper end shown) and one end of the third pipe 43 ( Figure 2 The second valve body 82 is arranged on the third pipeline 43.

[0084] In this manner, during operation, the thermoacoustic heat pump device can control the flow direction of the secondary coolant by controlling the opening and closing of the first valve body 81 and the second valve body 82, so that the secondary coolant flows through the second pipeline 42 and / or the third pipeline 43, thereby achieving independent production of domestic hot water, independent heating, or simultaneous production of domestic hot water and heating. The specific operating principle will not be further described in this embodiment.

[0085] By providing the first valve body 81 and the second valve body 82 , the flow direction of the coolant can be controlled, which is beneficial to reducing heat loss and improving system energy efficiency.

[0086] Refer to the following Figure 3 and Figure 4 , a brief introduction is given to the third embodiment of the thermoacoustic heat pump device of the present application.

[0087] like Figure 3 and Figure 4 As shown, based on the first embodiment, the present embodiment adjusts the structure of the thermoacoustic engine 1. Specifically, the thermoacoustic engine 1 includes two thermoacoustic units opposite to each other, and the two thermoacoustic units are arranged in the same shell 14, and each thermoacoustic unit includes a compression part 15 and a heat exchange part. Among them, the compression part 15 is a linear compressor, which includes electromagnetic components, a power piston, a spring, an ejector, etc., and the heat exchange part 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 in the shell 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 4As shown, in this application, the two cold end heat exchangers 12 are opposite to each other (ie, the two cold end heat exchangers 12 are close to each other and arranged facing each other), and a partition 16 is also provided between the two cold end heat exchangers 12 to separate the two thermoacoustic units. Return to reference Figure 3 The outdoor heat exchanger 21 exchanges heat with the two cold end heat exchangers 12 through the first refrigerant, and the first heat exchange component 22 and the second heat exchange component 23 exchange heat with the two hot end heat exchangers 11 through the second refrigerant. Specifically, the inlet of the outdoor heat exchanger 21 ( Figure 3 The upper end shown) is connected to one end of the two cold end heat exchangers 12 ( Figure 3 The outlet of the outdoor heat exchanger 21 ( Figure 3 The lower end shown) is connected to the other end of the two cold end heat exchangers 12 ( Figure 3 The inlet of the first heat exchange component 22 ( Figure 3 The left side port shown) is connected to one end of the two hot end heat exchangers 11 ( Figure 3 The outlet of the second heat exchange component 23 ( Figure 3 The upper side port shown) is connected to the other end of the two hot end heat exchangers 11 ( Figure 3 The upper end shown in the figure is connected, and at this time the two hot end heat exchangers 11 also form a "parallel" structure similar to that in electricity.

[0088] In this way, by installing two thermoacoustic units in the thermoacoustic machine 1, not only can the cooling and heating capacity be doubled, but the two thermoacoustic units, by arranging them opposite each other, can also overcome the high vibration and noise caused by the operation of a single thermoacoustic unit. Placing the two thermoacoustic units in the same housing 14 and separating the heat exchange portions by a partition 16 can simplify the manufacturing process and eliminate the need for targeted design of the interior of the housing 14. The specific operating principles of the above embodiment can be referred to the first embodiment and will not be repeated in this embodiment.

[0089] It should be noted that the above preferred embodiments are only used to illustrate 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 may adjust the above settings so that this application can be applied to more specific application scenarios.

[0090] For example, in an alternative embodiment, although the outdoor heat exchanger 21 is described above using an air-cooled heat exchanger as an example, the specific form of the outdoor heat exchanger 21 is not limited and can be adjusted by those skilled in the art. For example, the outdoor heat exchanger 21 can also be a liquid-cooled heat exchanger having a liquid-cooled inlet and a liquid-cooled outlet. The liquid-cooled heat exchanger is configured to be circulated and connected to a liquid cooling source through the liquid-cooled inlet and the liquid-cooled outlet. In this case, the first fan 3 can be omitted. For example, the liquid-cooled heat exchanger can exchange heat with groundwater or cooling water in a cold water tank.

[0091] For example, in another alternative embodiment, the setting mode in which the outdoor heat exchanger 21 is cyclically connected to the cold-end heat exchanger 12 through the first pipe 41 is not fixed, and those skilled in the art can adjust the heat exchange mode between the outdoor heat exchanger 21 and the cold-end heat exchanger 12. For example, the outdoor heat exchanger 21 is a heat pipe heat exchanger, and the evaporation end of the heat pipe heat exchanger exchanges heat with the outdoor environment, such as through a fan. The condensation end of the heat pipe heat exchanger exchanges heat with the cold-end heat exchanger 12, such as the condensation end is in contact with the cold-end heat exchanger 12. The first refrigerant is filled in the heat pipe heat exchanger, and the first refrigerant can be water, alcohol, ammonia solution, etc. By adopting a heat pipe heat exchanger for the outdoor heat exchanger 21, the heat exchange effect can be improved, and the setting of the first pump body 51 can be omitted, thereby reducing the system setting cost.

[0092] For example, in another alternative embodiment, the outdoor heat exchanger 21 can also form a loop heat pipe with the cold end heat exchanger 12 through a pipeline. In this case, the evaporator of the loop heat pipe is the outdoor heat exchanger 21, and the liquid first refrigerant exchanges heat with the environment in the evaporator and absorbs heat and vaporizes, wherein a capillary structure needs to be provided in the outdoor heat exchanger 21 to provide a pressure drop. The condenser of the loop heat pipe is the cold end heat exchanger 12, and the gaseous first refrigerant exchanges heat with the cold energy in the cold end heat exchanger 12 to cool down and liquefy. The first refrigerant is filled in the loop heat pipe, and the first refrigerant can be an ammonia solution, Freon, water, etc. By forming a loop heat pipe between the outdoor heat exchanger 21 and the cold end heat exchanger 12, the installation method is simple, the setting of the first pump body 51 can be omitted, and it is suitable for long-distance refrigerant transmission.

[0093] For example, in another alternative embodiment, although the above embodiment is introduced with the example of the freezing point of the first coolant being less than or equal to -40°C, the specific selection of the first coolant is not fixed, and those skilled in the art can make a selection based on the specific application scenario. For example, in areas with high outdoor ambient temperatures, water can also be selected as the first coolant, or other coolants can be selected. Similarly, the use of water as the second coolant is only an exemplary embodiment. In other application scenarios, those skilled in the art can choose other coolants for replacement.

[0094] For example, in another alternative embodiment, the first heat exchange component 22 and the second heat exchange component 23 are simultaneously connected to the hot-end heat exchanger 11 via the second pipe 42. However, this is merely a preferred embodiment, and those skilled in the art may make adjustments. For example, the first heat exchange component 22, the second heat exchange component 23, and the hot-end heat exchanger 11 may also be connected via a loop heat pipe, in which case the first heat exchange component 22 and the second heat exchange component 23 both serve as condensers in the loop heat pipe.

[0095] For example, in another alternative embodiment, it is a preferred embodiment to arrange the first heat exchange component 22 upstream of the second heat exchange component 23. Those skilled in the art may also swap the order of the two and arrange the first heat exchange component 22 downstream of the second heat exchange component 23, but this arrangement is not conducive to improving energy efficiency.

[0096] For example, in another alternative embodiment, although the first heat exchange component 22 and the second heat exchange component 23 are described using the examples of a water tank and a plate heat exchanger, respectively, this application does not limit the specific functions and structural forms of the first heat exchange component 22 and the second heat exchange component 23. For example, the functions of the first heat exchange component 22 and the second heat exchange component 23 can also be any two of the following: producing domestic hot water, heating, or air-cooled heating. If the function is air-cooled heating, the heat exchange component can be configured as an air-cooled heat exchanger and equipped with a fan to achieve heat exchange with the indoor air.

[0097] For example, in another alternative embodiment, the second heat exchange component 23 is a plate heat exchanger, which is only one possible embodiment. In other embodiments, the second heat exchange component 23 can also be a shell and tube heat exchanger or a shell and tube heat exchanger, as long as it can achieve heat exchange to the room for heating.

[0098] For example, the first heat exchange component 22 is a water tank, which is only exemplary, and can also be any device that can be placed in the water tank to heat domestic water. For example, the first heat exchange component 22 can also be replaced by a heat exchange coil, a fin heat exchanger, or a heat exchange plate.

[0099] For another example, in an alternative embodiment, although the above embodiment is described using the first valve body 81 and the second valve body 82 as an example, the specific implementation of the valve body is not unique and can be adjusted by those skilled in the art as long as the adjusted technical solution can achieve flow control of the brine. For example, the first valve body 81 and the second valve body 82 can be replaced by a three-way valve. Furthermore, the first valve body 81 and the second valve body 82 can be omitted.

[0100] For another example, although the above two embodiments are described in conjunction with the thermoacoustic heat pump device for dual supply, this is merely an example. In other embodiments, heat exchange components can be further added to achieve trigeneration of the thermoacoustic heat pump device. For example, a third heat exchange component can be added on the basis of the first and second embodiments, so that the third heat exchange component exchanges heat with the hot end heat exchanger through the second refrigerant. For example, the third heat exchange component can be an air-cooled heat exchanger, so that domestic hot water, heating and heating trigeneration can be achieved. The specific location of the third heat exchange component is not limited in this application. It can be set on the second pipeline 42, on the third pipeline 43, or on a separate pipeline.

[0101] For example, in another alternative embodiment, although the above-mentioned third embodiment is introduced by taking two thermoacoustic units as an example and arranged in the same shell 14, this is only a more preferred embodiment. In other embodiments, two separate thermoacoustic machines can also be arranged opposite each other.

[0102] For example, in another alternative embodiment, although the heat exchange parts of the two thermoacoustic units in the above-mentioned third embodiment are separated by a partition 16, this is only one possible way. In another embodiment, the two heat exchange parts 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 parts are connected to each other, the material cost is low, and the integrated design has higher reliability and better heat exchange effect.

[0103] For example, in another alternative embodiment, although the above-mentioned third embodiment is introduced in combination with the example of two cold-end heat exchangers 12 facing each other, this is only one possible embodiment. The specific arrangement depends on the specific form of the heat exchange part. For example, when the hot-end heat exchanger 11 is located at the outermost side of the thermoacoustic unit, the two hot-end heat exchangers 11 can also be arranged to face each other.

[0104] For example, in another alternative embodiment, the specific form of the compression part 15 is not limited in this application. In addition to a linear compressor, it can also be any other form of compressor, such as a crank-connecting rod compressor.

[0105] For example, in another alternative embodiment, although the third embodiment described above is described in combination with the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 being arranged in "parallel" as an example, this is only used to illustrate the principle of the present application and is not used to limit the scope of protection of the present application. Those skilled in the art can understand that in other embodiments, the connection method of the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 can also be changed so that the present application is applicable 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 in succession and then exchanges heat with the outdoor heat exchanger 21, and the second refrigerant passes through the two hot-end heat exchangers 11 in succession and then enters the first heat exchange component 22 and the second heat exchange component 23 in sequence for heat exchange.

[0106] For another example, although the above embodiment is described in conjunction with a household scenario, this is not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art may apply this application to other application scenarios. For example, the thermoacoustic heat pump device of this application is also suitable for commercial scenarios.

[0107] Of course, the above-mentioned alternative embodiments, as well as the alternative embodiments and the preferred embodiments, can be used in conjunction with each other to create new embodiments suitable for more specific application scenarios. For example, the thermoacoustic engine 1 in the third embodiment can be applied to the second embodiment.

[0108] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.

[0109] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A thermoacoustic heat pump device, characterized in that: The thermoacoustic heat pump device comprises: A thermoacoustic engine having a cold end heat exchanger and a hot end heat exchanger; an outdoor heat exchanger, wherein heat is exchanged between the outdoor heat exchanger and the cold-end heat exchanger via a first refrigerant; a first heat exchange component, wherein heat is exchanged between the first heat exchange component and the hot end heat exchanger via a second coolant; The second heat exchange component exchanges heat with the hot end heat exchanger via a second refrigerant.

2. The thermoacoustic heat pump device according to claim 1, characterized in that The outdoor heat exchanger is an air-cooled heat exchanger, and the thermoacoustic heat pump device further includes a first fan, which is arranged corresponding to the outdoor heat exchanger; or The outdoor heat exchanger is a liquid-cooled heat exchanger having a liquid-cooled inlet and a liquid-cooled outlet. The liquid-cooled heat exchanger is configured to be circulated and connected to a liquid-cooled source through the liquid-cooled inlet and the liquid-cooled outlet.

3. The thermoacoustic heat pump device according to claim 1, characterized in that The outdoor heat exchanger is in circulation communication with the cold-end heat exchanger via a first pipeline, the thermoacoustic heat pump device further comprises a first pump body, the first pump body is arranged in the first pipeline, and the first refrigerant is filled in the first pipeline; or The outdoor heat exchanger is a heat pipe heat exchanger, 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 A loop heat pipe is formed between the outdoor heat exchanger and the cold end heat exchanger through a pipeline, and the first refrigerant is filled in the loop heat pipe.

4. The thermoacoustic heat pump device according to claim 1, characterized in that The first heat exchange component and the second heat exchange component are simultaneously connected to the hot end heat exchanger through a second pipeline. The thermoacoustic heat pump device also includes a second pump body, which is arranged in the second pipeline, and the second refrigerant is filled in the second pipeline.

5. The thermoacoustic heat pump device according to claim 1, characterized in that The first heat exchange component is connected to the hot-end heat exchanger in a circulation manner through a second pipeline, and the second heat exchange component is connected to the second pipeline through a third pipeline. One end of the third pipeline is connected between one end of the hot-end heat exchanger and the first end of the first heat exchange component, and the other end of the third pipeline is connected between the other end of the hot-end heat exchanger and the other end of the first heat exchange component. The thermoacoustic heat pump device also includes a second pump body, which is arranged in the second pipeline and located between one end of the hot-end heat exchanger and one end of the third pipeline. The second refrigerant is filled in the second pipeline and the third pipeline.

6. The thermoacoustic heat pump device according to claim 5, characterized in that The thermoacoustic heat pump device further includes a first valve body and a second valve body. The first valve body is arranged on the second pipeline between one end of the hot end heat exchanger and one end of the third pipeline. The second valve body is arranged on the third pipeline.

7. The thermoacoustic heat pump device according to any one of claims 4 to 6, characterized in that The first heat exchange component is used for domestic hot water, and the second heat exchange component is used for heating.

8. The thermoacoustic heat pump device according to claim 7, characterized in that: When the first heat exchange component and the second heat exchange component are simultaneously in circulation communication with the hot end heat exchanger through the second pipeline, the first heat exchange component is located upstream of the second heat exchange component; and / or The first heat exchange component is a water tank or a heat exchange coil arranged in the water tank; and / or The second heat exchange component is a plate heat exchanger, a shell and tube heat exchanger or a shell and tube heat exchanger.

9. The thermoacoustic heat pump device according to claim 1, characterized in that The thermoacoustic heat pump device further includes a third heat exchange component, and heat is exchanged between the third heat exchange component and the hot end heat exchanger via a second coolant.

10. The thermoacoustic heat pump device according to claim 1, characterized in that The thermoacoustic machine includes two thermoacoustic units opposite to each other, each of the thermoacoustic units includes a compression part and a heat exchange part, each of the heat exchange parts includes the hot-end heat exchanger, the regenerator and the cold-end heat exchanger, the outdoor heat exchanger and the two cold-end heat exchangers exchange heat through the first refrigerant, the first heat exchange component and the two hot-end heat exchangers exchange heat through the second refrigerant, and the second heat exchange component and the two hot-end heat exchangers exchange heat through the second refrigerant.

11. The thermoacoustic heat pump device according to claim 10, characterized in that: The two thermoacoustic units are arranged in the same housing, and the two heat exchange parts are connected to each other or separated by a partition; and / or The two cold-end heat exchangers are opposite to each other.

12. The thermoacoustic heat pump device according to claim 1, characterized in that The thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonance tube thermoacoustic engine.

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