Heat pump device

Abstract

The utility model relates to the technical field of heat pumps, in particular to a 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. In order to achieve the purpose, the heat pump device comprises a thermo-acoustic machine, a heat exchanger and a heat pump, the first heat exchanger exchanges heat with the cold end heat exchanger through a first secondary refrigerant; and the second heat exchanger exchanges heat with the hot end heat exchanger through a second refrigerating medium. According to the heat pump device, efficient heating at the low environment temperature is achieved, and compared with traditional steam compression refrigeration, the heat pump device has the obvious advantage in the working efficiency.

Description

Technical Field

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

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

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

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

[0005] To address at least one of the aforementioned problems in the prior art, namely, to solve the problem of low energy efficiency or even inoperability of traditional heat pump heating systems at low ambient temperatures, this application provides a heat pump device, the heat pump device comprising:

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

[0007] A first heat exchanger, wherein the first heat exchanger and the cold end heat exchanger exchange heat through a first refrigerant;

[0008] The second heat exchanger exchanges heat with the hot-end heat exchanger via a second refrigerant.

[0009] The heat pump device of this application, by incorporating a thermoacoustic engine, utilizes the thermoacoustic effect of the engine's operation to transfer heat from the cold-end heat exchanger to the hot-end heat exchanger. Then, the cold-end and hot-end heat exchangers exchange heat with the first and second heat exchangers respectively, displacing and utilizing the cooling and heating energy generated during the operation of the thermoacoustic engine, ultimately achieving efficient heating at low ambient temperatures. Furthermore, because the heat transfer process is less affected by the external ambient temperature, the heat pump device of this application has a significant advantage in operating efficiency compared to traditional vapor compression refrigeration.

[0010] In the preferred embodiment of the above-mentioned heat pump device, the first heat exchanger is an air-cooled heat exchanger, and the heat pump device further includes a first fan, which is correspondingly arranged with the first heat exchanger; or

[0011] The first heat exchanger is a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet, and is configured to be in circulatory communication with a liquid-cooling source through the liquid-cooled inlet and the liquid-cooled outlet.

[0012] The first heat exchanger is an air-cooled heat exchanger, which enables heat exchange between the refrigerant and the environment. The second heat exchanger is a liquid-cooled heat exchanger, which can utilize energy sources of other grades (such as water) to achieve heat exchange of the refrigerant.

[0013] In the preferred embodiment of the above-mentioned heat pump device, the first heat exchanger is circulatedly connected to the cold end heat exchanger through a first pipeline, and the heat pump device further includes a first pump body, which is disposed in the first pipeline, and the first refrigerant is filled in the first pipeline.

[0014] In the preferred embodiment of the above-mentioned heat pump device, the freezing point of the first refrigerant is less than or equal to 0°C.

[0015] In the preferred embodiment of the above-mentioned heat pump device, the first 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] The first heat exchanger 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.

[0017] Using a heat pipe heat exchanger in the first heat exchanger can improve heat exchange efficiency and reduce system setup costs. A loop heat pipe is formed between the first heat exchanger and the cold-end heat exchanger, simplifying installation and making it suitable for long-distance refrigerant transport.

[0018] In the preferred embodiment of the above-mentioned heat pump device, the second heat exchanger is an air-cooled heat exchanger, and the heat pump device further includes a second fan, which is correspondingly arranged with the second heat exchanger; or

[0019] The second heat exchanger is a heat exchange coil.

[0020] The second heat exchanger is an air-cooled heat exchanger, which can exchange heat with the environment, thereby achieving temperature control. The second heat exchanger is a heat exchange coil, which can exchange heat with other media such as water, increasing the applicability of the heat pump unit.

[0021] In the preferred embodiment of the above-mentioned heat pump device, the second heat exchanger is circulatedly connected to the hot end heat exchanger through the second pipeline, and the heat pump device further includes a second pump body, which is disposed in the second pipeline, and the second refrigerant is filled in the second pipeline.

[0022] In the preferred embodiment of the above-mentioned heat pump device, the first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.

[0023] In the preferred embodiment of the above-mentioned heat pump device, the hot-end heat exchanger has a first heat exchange channel and a second heat exchange channel that are independent of each other, and the cold-end heat exchanger has a third heat exchange channel and a fourth heat exchange channel that are independent of each other.

[0024] The outdoor heat exchanger is selectively connected to the first heat exchange channel or the third heat exchange channel through a first tube group, and the first tube group is filled with a first refrigerant.

[0025] The indoor heat exchanger is selectively connected to the second heat exchange channel or the fourth heat exchange channel via a second tube group, and the second tube group is filled with a second refrigerant.

[0026] The heat pump device also includes:

[0027] A first pump body is disposed in the first pipe group and is used to drive the first refrigerant circulation;

[0028] The second pump body is located in the second pipe assembly and is used to drive the second refrigerant circulation.

[0029] The hot-end and cold-end heat exchangers each have two heat exchange channels, allowing the heat pump unit to switch operating modes. It can use the hot-end heat exchanger for heating or the cold-end heat exchanger for cooling, expanding the unit's application scenarios. Furthermore, the separate heat exchange channels for the hot-end and cold-end heat exchangers ensure that the first and second refrigerants circulate independently, allowing for targeted selection of the appropriate refrigerant based on different indoor and outdoor environments, thus improving the unit's operating efficiency.

[0030] In the preferred embodiment of the above-mentioned heat pump device, the first pipe assembly includes a first main pipe, a first branch pipe, a second branch pipe, and a first three-way valve. The outdoor heat exchanger and the first pump body are disposed on the first main pipe. The three ports of the first three-way valve are respectively connected to one end of the first main pipe, one end of the first branch pipe, and one end of the second branch pipe. The other ends of the first branch pipe and the second branch pipe are simultaneously connected to the other end of the first main pipe. Furthermore, the first branch pipe is also connected to the first heat exchange channel, and the second branch pipe is also connected to the third heat exchange channel.

[0031] The above setup allows for the switching of the two heat exchange channels using a first three-way valve.

[0032] In the preferred embodiment of the above-mentioned heat pump device, the first pipe assembly includes a first main pipe, a first branch pipe, a second branch pipe, a first on / off valve, and a second on / off valve. The outdoor heat exchanger and the first pump body are disposed on the first main pipe. The first on / off valve and the second on / off valve are respectively disposed on the first branch pipe and the second branch pipe. One end of the first main pipe is simultaneously connected to one end of the first branch pipe and one end of the second branch pipe. The other end of the first main pipe is simultaneously connected to the other end of the first branch pipe and the other end of the second branch pipe. Furthermore, the first branch pipe is also connected to the first heat exchange channel, and the second branch pipe is also connected to the third heat exchange channel.

[0033] The above setup allows for the switching of two heat exchange channels using two on / off valves.

[0034] In the preferred embodiment of the above-mentioned heat pump device, the second pipe assembly includes a second main pipe, a third branch pipe, a fourth branch pipe, and a second three-way valve. The indoor heat exchanger and the second pump body are disposed on the second main pipe. The three ports of the second three-way valve are respectively connected to one end of the second main pipe, one end of the third branch pipe, and one end of the fourth branch pipe. The other ends of the third branch pipe and the fourth branch pipe are simultaneously connected to the other end of the second main pipe. Furthermore, the third branch pipe is also connected to the second heat exchange channel, and the fourth branch pipe is also connected to the fourth heat exchange channel.

[0035] The above setup allows for the switching of the two heat exchange channels using a second three-way valve.

[0036] In the preferred embodiment of the above-mentioned heat pump device, the second pipe assembly includes a second main pipe, a third branch pipe, a fourth branch pipe, a third on-off valve, and a fourth on-off valve. The indoor heat exchanger and the second pump body are disposed on the second main pipe. The third on-off valve and the fourth on-off valve are respectively disposed on the third branch pipe and the fourth branch pipe. One end of the second main pipe is simultaneously connected to one end of the third branch pipe and one end of the fourth branch pipe. The other end of the second main pipe is simultaneously connected to the other end of the third branch pipe and the other end of the fourth branch pipe. Furthermore, the third branch pipe is also connected to the second heat exchange channel, and the fourth branch pipe is also connected to the fourth heat exchange channel.

[0037] The above setup allows for the switching of two heat exchange channels using two on / off valves.

[0038] In the preferred embodiment of the above-mentioned heat pump device, the thermoacoustic engine is a free-piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine; and / or

[0039] The heat pump device is an air conditioner or a water heater.

[0040] In the preferred embodiment of the above-mentioned heat pump device, the thermoacoustic engine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. The first heat exchanger exchanges heat with the two cold-end heat exchangers through a first refrigerant, and the second heat exchanger exchanges heat with the two hot-end heat exchangers through a second refrigerant.

[0041] In the preferred embodiment of the above-mentioned heat pump device, the thermoacoustic engine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. Each hot-end heat exchanger has a first heat exchange channel and a second heat exchange channel that are independent of each other. Each cold-end heat exchanger has a third heat exchange channel and a fourth heat exchange channel that are independent of each other. The outdoor heat exchanger is selectively connected to two of the first heat exchange channels or two of the third heat exchange channels through a first pipe assembly. The indoor heat exchanger is selectively connected to two of the second heat exchange channels or two of the fourth heat exchange channels through a second pipe assembly.

[0042] 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.

[0043] In the preferred embodiment of the above-mentioned heat pump device, the two thermoacoustic units are disposed in the same housing, and the two heat exchange sections are connected to each other or separated by a partition; and / or

[0044] The two cold-end heat exchangers are positioned opposite each other.

[0045] 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.

[0046] Solution 1. A heat pump device, characterized in that the heat pump device comprises:

[0047] A thermoacoustic machine having a cold-end heat exchanger and a hot-end heat exchanger;

[0048] A first heat exchanger, wherein the first heat exchanger and the cold end heat exchanger exchange heat through a first refrigerant;

[0049] The second heat exchanger exchanges heat with the hot-end heat exchanger via a second refrigerant.

[0050] Option 2. The heat pump device according to Option 1, characterized in that the first heat exchanger is an air-cooled heat exchanger, and the heat pump device further includes a first fan, the first fan being correspondingly arranged with the first heat exchanger; or

[0051] The first heat exchanger is a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet, and is configured to be in circulatory communication with a liquid-cooling source through the liquid-cooled inlet and the liquid-cooled outlet.

[0052] Scheme 3. The heat pump device according to Scheme 1, characterized in that the first heat exchanger is circulatedly connected to the cold end heat exchanger through a first pipeline, and the heat pump device further includes a first pump body, the first pump body is disposed in the first pipeline, and the first refrigerant is filled in the first pipeline.

[0053] Option 4. The heat pump device according to Option 3, characterized in that the freezing point of the first refrigerant is less than or equal to 0°C.

[0054] Option 5. The heat pump device according to Option 1, characterized in that the first 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

[0055] The first heat exchanger 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.

[0056] Option 6. The heat pump device according to Option 1, characterized in that the second heat exchanger is an air-cooled heat exchanger, and the heat pump device further includes a second fan, the second fan being correspondingly arranged with the second heat exchanger; or

[0057] The second heat exchanger is a heat exchange coil.

[0058] Scheme 7. The heat pump device according to Scheme 1, characterized in that the second heat exchanger is circulatedly connected to the hot end heat exchanger through a second pipeline, and the heat pump device further includes a second pump body, the second pump body is disposed in the second pipeline, and the second refrigerant is filled in the second pipeline.

[0059] Option 8. The heat pump device according to Option 1, 2 or 6, characterized in that the first heat exchanger is an outdoor heat exchanger and the second heat exchanger is an indoor heat exchanger.

[0060] Option 9. The heat pump device according to Option 8, characterized in that the hot-end heat exchanger has a first heat exchange channel and a second heat exchange channel that are independent of each other, and the cold-end heat exchanger has a third heat exchange channel and a fourth heat exchange channel that are independent of each other.

[0061] The outdoor heat exchanger is selectively connected to the first heat exchange channel or the third heat exchange channel through a first tube group, and the first tube group is filled with a first refrigerant.

[0062] The indoor heat exchanger is selectively connected to the second heat exchange channel or the fourth heat exchange channel via a second tube group, and the second tube group is filled with a second refrigerant.

[0063] The heat pump device also includes:

[0064] A first pump body is disposed in the first pipe group and is used to drive the first refrigerant circulation;

[0065] The second pump body is located in the second pipe assembly and is used to drive the second refrigerant circulation.

[0066] Scheme 10. The heat pump device according to Scheme 9, characterized in that the first pipe group includes a first main pipe, a first branch pipe, a second branch pipe and a first three-way valve, the outdoor heat exchanger and the first pump body are disposed on the first main pipe, the three ports of the first three-way valve are respectively connected to one end of the first main pipe, one end of the first branch pipe and one end of the second branch pipe, the other end of the first branch pipe and the other end of the second branch pipe are simultaneously connected to the other end of the first main pipe, and the first branch pipe is also connected to the first heat exchange channel, and the second branch pipe is also connected to the third heat exchange channel.

[0067] Scheme 11. The heat pump device according to Scheme 9, characterized in that the first pipe group includes a first main pipe, a first branch pipe, a second branch pipe, a first on / off valve, and a second on / off valve, the outdoor heat exchanger and the first pump body are disposed on the first main pipe, the first on / off valve and the second on / off valve are respectively disposed on the first branch pipe and the second branch pipe, one end of the first main pipe is simultaneously connected to one end of the first branch pipe and one end of the second branch pipe, the other end of the first main pipe is simultaneously connected to the other end of the first branch pipe and the other end of the second branch pipe, and the first branch pipe is also connected to the first heat exchange channel, and the second branch pipe is also connected to the third heat exchange channel.

[0068] Scheme 12. The heat pump device according to Scheme 9, characterized in that the second pipe group includes a second main pipe, a third branch pipe, a fourth branch pipe, and a second three-way valve, the indoor heat exchanger and the second pump body are disposed on the second main pipe, the three ports of the second three-way valve are respectively connected to one end of the second main pipe, one end of the third branch pipe and one end of the fourth branch pipe, the other end of the third branch pipe and the other end of the fourth branch pipe are simultaneously connected to the other end of the second main pipe, and the third branch pipe is also connected to the second heat exchange channel, and the fourth branch pipe is also connected to the fourth heat exchange channel.

[0069] Option 13. The heat pump device according to Option 9, characterized in that the second pipe assembly includes a second main pipe, a third branch pipe, a fourth branch pipe, a third on / off valve, and a fourth on / off valve; the indoor heat exchanger and the second pump body are disposed on the second main pipe; the third on / off valve and the fourth on / off valve are respectively disposed on the third branch pipe and the fourth branch pipe; one end of the second main pipe is simultaneously connected to one end of the third branch pipe and one end of the fourth branch pipe; the other end of the second main pipe is simultaneously connected to the other end of the third branch pipe and the other end of the fourth branch pipe; and the third branch pipe is also connected to the second heat exchange channel, and the fourth branch pipe is also connected to the fourth heat exchange channel.

[0070] Option 14. The heat pump device according to Option 1, characterized in that the thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine; and / or the heat pump device is an air conditioner or a water heater.

[0071] Option 15. The heat pump device according to Option 1, characterized in that the thermoacoustic engine includes two thermoacoustic units facing each other, each thermoacoustic unit includes a compression section and a heat exchange section, each heat exchange section includes a hot-end heat exchanger, a regenerator and a cold-end heat exchanger, the first heat exchanger exchanges heat with the two cold-end heat exchangers through a first refrigerant, and the second heat exchanger exchanges heat with the two hot-end heat exchangers through a second refrigerant.

[0072] Option 16. The heat pump device according to Option 9, characterized in that the thermoacoustic engine includes two thermoacoustic units facing each other, each thermoacoustic unit includes a compression section and a heat exchange section, each heat exchange section includes a hot-end heat exchanger, a regenerator and a cold-end heat exchanger, each hot-end heat exchanger has a first heat exchange channel and a second heat exchange channel that are independent of each other, each cold-end heat exchanger has a third heat exchange channel and a fourth heat exchange channel that are independent of each other, the outdoor heat exchanger is selectively connected to two of the first heat exchange channels or two of the third heat exchange channels through a first pipe group, and the indoor heat exchanger is selectively connected to two of the second heat exchange channels or two of the fourth heat exchange channels through a second pipe group.

[0073] Option 17. The heat pump device according to Option 15, 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

[0074] The two cold-end heat exchangers are positioned opposite each other. Attached Figure Description

[0075] The present application will now be described with reference to the accompanying drawings. In the drawings:

[0076] Figure 1 This is a system diagram of a heat pump device according to the first embodiment of this application;

[0077] Figure 2 This is a system diagram of a second embodiment of the heat pump device of this application;

[0078] Figure 3 This is a schematic diagram of the thermoacoustic engine in a second embodiment of the heat pump device of this application;

[0079] Figure 4 This is a system diagram of a third embodiment of the heat pump device of this application;

[0080] Figure 5 This is a system diagram of a fourth embodiment of the heat pump device of this application.

[0081] List of reference numerals

[0082] 1. Thermoacoustic unit; 11. Hot-end heat exchanger; 111. First heat exchange channel; 112. Second heat exchange channel; 12. Cold-end heat exchanger; 121. Third heat exchange channel; 122. Fourth heat exchange channel; 13. Regenerator; 14. Shell; 15. Compression section; 16. Baffle; 21. First heat exchanger / outdoor heat exchanger; 22. Second heat exchanger / indoor heat exchanger; 31. First fan; 32. Second fan; 41. First pipeline; 42. Second pipeline; 51. First pump body; 52. Second pump body; 611. First main pipe; 612. First branch pipe; 613. Second branch pipe; 614. First three-way valve; 621. Second main pipe; 622. Third branch pipe; 623. Fourth branch pipe; 624. Second three-way valve. Detailed Implementation

[0083] Preferred embodiments of this application are described below 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. For example, although the following embodiments are described in conjunction with household air conditioners, this is not intended to limit the scope of protection of this application. Those skilled in the art can apply this application to other application scenarios without departing from the principles of this application. For example, the heat pump device of this application is also suitable for application scenarios such as parking air conditioners, commercial air conditioners, and heat pump water heaters.

[0084] It should be noted that in the description of this application, terms such as "upper" and "lower" indicating direction or positional relationships are based on the direction 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, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] 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.

[0086] First refer to Figure 1 This paper provides a brief introduction to the heat pump device of this application.

[0087] like Figure 1 As shown, in order to solve the problem of low energy efficiency or even inoperability of traditional heat pump heating systems at low ambient temperatures, the heat pump device of this application includes a thermoacoustic engine 1, a first heat exchanger 21, and a second heat exchanger 22. The thermoacoustic engine 1 has a cold-end heat exchanger 12 and a hot-end heat exchanger 11. The first heat exchanger 21 and the cold-end heat exchanger 12 exchange heat through a first refrigerant, and the second heat exchanger 22 and the hot-end heat exchanger 11 exchange heat through a second refrigerant.

[0088] In one application, the thermoacoustic engine 1 operates, utilizing the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. Heat is exchanged between the cold-end heat exchanger 12 and a first refrigerant, transferring the heat from the cold-end heat exchanger 12 to the first heat exchanger 21, where it is then discharged, for example, to the outdoor environment. Similarly, heat is exchanged between the hot-end heat exchanger 11 and a second refrigerant, transferring the heat from the hot-end heat exchanger 11 to the second heat exchanger 22, where it is then discharged, for example, to the indoor environment, providing heating for the room.

[0089] The heat pump device of this application, by incorporating a thermoacoustic engine 1, utilizes the thermoacoustic effect of the engine 1 during operation to transfer heat from the cold-end heat exchanger to the hot-end heat exchanger. Then, the cold-end heat exchanger 12 and the hot-end heat exchanger 11 exchange heat with the first heat exchanger 21 and the second heat exchanger 22 respectively, displacing and utilizing the cooling and heating energy generated by the thermoacoustic engine 1 during operation, ultimately achieving efficient heating at low ambient temperatures. Furthermore, because the heat transfer process is less affected by the external ambient temperature, the heat pump device of this application has a significant advantage in operating efficiency compared to traditional vapor compression refrigeration.

[0090] The following is further reference Figure 1 The present application will be described in conjunction with an air conditioner, and a specific implementation method thereof will be introduced.

[0091] like Figure 1 As shown, in one specific embodiment, the heat pump device of this application is a household air conditioner, which includes a thermoelectric motor 1, a first heat exchanger 21, a second heat exchanger 22, a first fan 31, a second fan 32, a first pipeline 41, a second pipeline 42, a first pump body 51, and a second pump body 52.

[0092] 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.

[0093] 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 between the two heat exchangers, the heat and cold energy can be exported and utilized.

[0094] The first heat exchanger 21 is an outdoor heat exchanger, located outdoors, and is an air-cooled heat exchanger. Its inlet and outlet are circulated with the cold-end heat exchanger 12 via a first pipe 41, and a first refrigerant is filled in the first pipe 41. A first fan 31 is positioned corresponding to the first heat exchanger 21. When the first fan 31 starts, it draws surrounding outdoor air through the first heat exchanger 21, exchanging heat with the first refrigerant within it. A first pump body 51 is located in the first pipe 41. When the first pump body 51 starts, it drives the first refrigerant to circulate between the first heat exchanger 21 and the cold-end heat exchanger 12. In this application, the first refrigerant is selected with a freezing point of 0°C or less, more preferably, a refrigerant with a freezing point of -40°C or less, such as brine, ethylene glycol, methanol, ethanol, or a mixture of ethylene glycol, methanol, ethanol, and water.

[0095] The second heat exchanger 22 is an indoor heat exchanger, installed indoors, and is an air-cooled heat exchanger. Its inlet and outlet are circulated with the hot-end heat exchanger 11 via a second pipe 42, and a second refrigerant is filled in the second pipe 42. A second fan 32 is installed corresponding to the second heat exchanger 22. When the second fan 32 starts, it draws surrounding indoor air through the second heat exchanger 22, exchanging heat with the second refrigerant inside. A second pump body 52 is installed in the second pipe 42. When the second pump body 52 starts, it drives the second refrigerant to circulate between the second heat exchanger 22 and the hot-end heat exchanger 11. In this application, the second refrigerant is preferably water.

[0096] The following is combined Figure 1 The working principle of the aforementioned household air conditioner described in this application will be briefly introduced. For example... Figure 1 As shown, in one embodiment, the thermoacoustic machine 1, the first fan 31, the second fan 32, the first pump body 51, and the second pump body 52 are started and operated. During the operation of the thermoacoustic machine 1, heat and cold are generated through the thermoacoustic effect, and the heat and cold are absorbed by the hot-end heat exchanger 11 and the cold-end heat exchanger 12, respectively. The first pump body 51 drives the first refrigerant to circulate between the cold-end heat exchanger 12 and the first 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 and absorbs the cold in the cold-end heat exchanger 12 to cool down. When the first refrigerant continues to flow through the first heat exchanger 21, it exchanges heat with the air flow in the outdoor environment and absorbs heat from the outdoor environment to heat up, and so on. The second pump body 52 drives the second refrigerant to circulate between the hot-end heat exchanger 11 and the second heat exchanger 22. When the second refrigerant 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 rising in temperature. When the second refrigerant continues to flow through the second heat exchanger 22, it exchanges heat with the air flow in the indoor environment, absorbing the cold air in the indoor air and cooling down. Consequently, the temperature of the indoor air flow rises, achieving indoor heating.

[0097] In the above configuration, the first heat exchanger 21 is an air-cooled heat exchanger, enabling heat exchange between the refrigerant and the environment. Alternatively, the first heat exchanger 21 can be a liquid-cooled heat exchanger, utilizing energy sources of other grades (such as water) for refrigerant heat exchange. The freezing point of the first refrigerant is less than or equal to -40℃, which helps improve the operational stability of the heat pump under low or even ultra-low temperature outdoor conditions. The second heat exchanger 22 is an air-cooled heat exchanger, enabling heat exchange with the environment, thereby achieving temperature control. The second heat exchanger 22 is a heat exchange coil, enabling heat exchange with other media such as water, thus expanding the applicability of the heat pump unit.

[0098] The following reference Figure 2 and Figure 3 A second embodiment of the heat pump device of this application will be briefly described.

[0099] like Figure 2 and Figure 3 As shown, based on the first embodiment, this embodiment adjusts the structure of the thermoacoustic machine 1. Specifically, the thermoacoustic machine 1 includes two thermoacoustic units facing each other, which are disposed within the same housing 14, and each thermoacoustic unit includes a compression section 15 and a heat exchange section. The compression section 15 is a linear compressor, which includes electromagnetic components, a power piston, a spring, an exhaust fan, etc. The heat exchange section includes a hot-end heat exchanger 11, a regenerator 13, and a cold-end heat exchanger 12. An expansion chamber and a compression chamber are formed within the housing 14. The cold-end heat exchanger 12 is located in the expansion chamber, the hot-end heat exchanger 11 is located in the compression chamber, and the regenerator 13 is located between the cold-end heat exchanger 12 and the hot-end heat exchanger 11. Further, as... Figure 3 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 2 The first heat exchanger 21 exchanges heat with the two cold-end heat exchangers 12 through a first refrigerant, and the second heat exchanger 22 exchanges heat with the two hot-end heat exchangers 11 through a second refrigerant. Specifically, the inlet of the first heat exchanger 21 ( Figure 2 The upper end shown) is simultaneously connected to one end of the two cold end heat exchangers 12 ( Figure 2 The upper end shown is connected to the outlet of the first heat exchanger 21. Figure 2 The lower end shown) is simultaneously connected to the other end of the two cold end heat exchangers 12 ( Figure 2 The lower end of the second heat exchanger 22 is connected, at which point the two cold-end heat exchangers 12 form a structure similar to a "parallel" connection in electrical circuitry. The inlet of the second heat exchanger 22 (as shown below) Figure 2 The port shown on the right is simultaneously connected to one end of both hot-end heat exchangers 11. Figure 2 The lower end shown is connected to the outlet of the second heat exchanger 22. Figure 2The left port shown is simultaneously connected to the other end of the two hot-end heat exchangers 11. Figure 2 The upper end is connected, and at this time the two hot end heat exchangers 11 also form a "parallel" structure similar to that in electricity.

[0100] Thus, by setting two thermoacoustic units in thermoacoustic unit 1, not only can the cooling and heating capacity be doubled, but also the problem of high vibration and noise caused by a single thermoacoustic unit can be overcome by placing the two thermoacoustic units opposite each other. Placing the two thermoacoustic units within the same housing 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 housing 14. The specific working principle of the above embodiment can be referred to in the first embodiment, and will not be repeated here.

[0101] The following reference Figure 4 A brief description will be given of a third embodiment of the heat pump device of this application.

[0102] like Figure 4 As shown, with the first heat exchanger 21 being an outdoor heat exchanger and the second heat exchanger 22 being an indoor heat exchanger, the heat pump device of this application includes a thermoacoustic engine 1, an outdoor heat exchanger 21, an indoor heat exchanger 22, a first pump body 51, and a second pump body 52. ​​The thermoacoustic engine 1 has a hot-end heat exchanger 11 and a cold-end heat exchanger 12. The hot-end heat exchanger 11 has a first heat exchange channel 111 and a second heat exchange channel 112 that are independent of each other, and the cold-end heat exchanger 12 has a third heat exchange channel 121 and a fourth heat exchange channel 122 that are independent of each other. The outdoor heat exchanger 21 is selectively connected to either the first heat exchange channel 111 or the third heat exchange channel 121 via a first pipe assembly (not shown in the figure), and the first pipe assembly is filled with a first refrigerant. The indoor heat exchanger 22 is selectively connected to either the second heat exchange channel 112 or the fourth heat exchange channel 122 via a second pipe assembly (not shown in the figure), and the second pipe assembly is filled with a second refrigerant. The first pump body 51 is disposed in the first pipe group and is used to drive the first refrigerant circulation. The second pump body 52 is disposed in the second pipe group and is used to drive the second refrigerant circulation.

[0103] In one application, the outdoor heat exchanger 21 is connected to the first heat exchange channel 111 via a first pipe assembly, and the indoor heat exchanger 22 is connected to the fourth heat exchange channel 122 via a second pipe assembly. The thermoacoustic engine 1 starts operating, utilizing the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. The heat from the hot-end heat exchanger 11 is transferred to the outdoor heat exchanger 21 through a first refrigerant, and then discharged through the outdoor heat exchanger 21, or through heat exchange between the outdoor heat exchanger 21 and the environment. Similarly, the cooling capacity of the cold-end heat exchanger 12 is transferred to the indoor heat exchanger 22 through a second refrigerant, and then discharged through the indoor heat exchanger 22, or through heat exchange between the indoor heat exchanger 22 and the indoor environment, thus providing indoor cooling.

[0104] In another application, the outdoor heat exchanger 21 is connected to the third heat exchange channel 121 via the first pipe group, and the indoor heat exchanger 22 is connected to the second heat exchange channel 112 via the second pipe group. The thermoacoustic engine 1 starts operating, utilizing the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. The cooling energy from the cold-end heat exchanger 12 is transferred to the outdoor heat exchanger 21 through heat exchange with the first refrigerant, and is then discharged through the outdoor heat exchanger 21, for example, through heat exchange between the outdoor heat exchanger 21 and the environment. Similarly, the heat from the hot-end heat exchanger 11 is transferred to the indoor heat exchanger 22 through heat exchange with the indoor environment, thus providing indoor heating.

[0105] The heat pump device of this application has two heat exchange channels for each of the hot-end heat exchanger 11 and the cold-end heat exchanger 12. This also allows the heat pump device to switch operating modes, enabling it to heat the room using the hot-end heat exchanger 11 or cool the room using the cold-end heat exchanger 12, thus expanding the application scenarios of air conditioning. Furthermore, the separate heat exchange channels for the hot-end and cold-end heat exchangers 11 and 12 allow the first and second refrigerants to circulate independently, enabling the selection of appropriate refrigerants based on different indoor and outdoor environments, thereby improving air conditioning efficiency.

[0106] The following further combines Figure 4 This paper describes a specific embodiment of the heat pump device of this application.

[0107] like Figure 4 As shown, in one specific embodiment, the heat pump device is a household air conditioner, which includes a thermoelectric motor 1, an outdoor heat exchanger 21, an indoor heat exchanger 22, a first fan 31, a second fan 32, a first pipe assembly, a second pipe assembly, a first pump body 51, and a second pump body 52.

[0108] The specific form of the thermoacoustic machine 1 has been described in the first embodiment and will not be repeated here.

[0109] The hot-end heat exchanger 11 and the cold-end heat exchanger 12 are each provided with two heat exchange channels. The hot-end heat exchanger 11 is provided with a first heat exchange channel 111 and a second heat exchange channel 112, and the two heat exchange channels are independent of each other. The cold-end heat exchanger 12 is provided with a third heat exchange channel 121 and a fourth heat exchange channel 122, and the two heat exchange channels are independent of each other.

[0110] The outdoor heat exchanger 21 is an air-cooled heat exchanger. Its inlet and outlet are selectively connected to the first heat exchange channel 111 of the hot-end heat exchanger 11 and the third heat exchange channel 121 of the cold-end heat exchanger 12 via a first pipe assembly. A first refrigerant is filled in the first pipe assembly. A first fan 31 is positioned corresponding to the outdoor heat exchanger 21. When the first fan 31 starts, it draws surrounding outdoor air through the outdoor heat exchanger 21, exchanging heat with the first refrigerant within it. A first pump body 51 is positioned in the first pipe assembly. When the first pump body 51 starts, it circulates the first refrigerant within the first pipe assembly. In this application, the first refrigerant is selected from those with a freezing point of 0°C or less, more preferably from those with a freezing point of -40°C or less, such as brine, ethylene glycol, methanol, ethanol, or a mixture of ethylene glycol, methanol, ethanol, and water.

[0111] The indoor heat exchanger 22 is an air-cooled heat exchanger. Its inlet and outlet are selectively connected to the second heat exchange channel 112 of the hot-end heat exchanger 11 and the fourth heat exchange channel 122 of the cold-end heat exchanger 12 via a second pipe assembly. A second refrigerant is filled in the second pipe assembly. A second fan 32 is positioned corresponding to the indoor heat exchanger 22. When the second fan 32 starts, it draws surrounding indoor air through the indoor heat exchanger 22, exchanging heat with the second refrigerant within it. A second pump body 52 is located in the second pipe assembly. When the second pump body 52 starts, it circulates the second refrigerant within the second pipe assembly. In this application, the second refrigerant is preferably water.

[0112] The first pipe assembly includes a first main pipe 611, a first branch pipe 612, a second branch pipe 613, and a first three-way valve 614. The outdoor heat exchanger 21 and the first pump body 51 are both located on the first main pipe 611. The three ports of the first three-way valve 614 are respectively connected to one end of the first main pipe 611. Figure 4 (as shown at the lower end), one end of the first branch pipe 612 ( Figure 4 The lower end shown) and one end of the second branch pipe 613 (shown) Figure 4 The lower end shown is connected, and the other end of the first branch pipe 612 ( Figure 4 The upper end shown) and the other end of the second branch pipe 613 ( Figure 4 The upper end shown is simultaneously connected to the other end of the first main tube 611 ( Figure 4The first branch pipe 612 is connected to the first heat exchange channel 111, and the second branch pipe 613 is connected to the third heat exchange channel 121. The first three-way valve 614 is preferably an electromagnetic three-way valve, which can achieve independent connection between the first main pipe 611 and the first branch pipe 612 or between the first main pipe 611 and the second branch pipe 613. It should be noted that the connection between the first branch pipe 612 and the first heat exchange channel 111 means that the first heat exchange channel 111 connects between the two ends of the first branch pipe 612, that is, the first heat exchange channel 111 cuts the first branch pipe 612 into two parts, and the two ends of the first heat exchange channel 111 are respectively connected to the two inner ends formed after the first branch pipe 612 is cut off. The second branch pipe 613 is similar and will not be described further.

[0113] The second pipe assembly includes a second main pipe 621, a third branch pipe 622, a fourth branch pipe 623, and a second three-way valve 624. The indoor heat exchanger 22 and the second pump body 52 are located on the second main pipe 621, and the three ports of the second three-way valve 624 are respectively connected to one end of the second main pipe 621. Figure 4 The upper end shown), one end of the third branch pipe 622 ( Figure 4 The upper end shown) and one end of the fourth branch pipe 623 ( Figure 4 The upper end shown is connected, and the other end of the third branch pipe 622 ( Figure 4 The lower end shown) and the other end of the fourth branch pipe 623 (shown below) Figure 4 The lower end shown) is simultaneously connected to the other end of the second main tube 621 ( Figure 4 The lower end of the pipe is connected to the second heat exchange channel 112, and the third branch pipe 622 is also connected to the second heat exchange channel 122. The fourth branch pipe 623 is also connected to the fourth heat exchange channel 122. The second three-way valve 624 is preferably an electromagnetic three-way valve, which can realize the independent connection between the second main pipe 621 and the third branch pipe 622 or the independent connection between the second main pipe 621 and the fourth branch pipe 623. Here, the connection between the third branch pipe 622 and the second heat exchange channel 112, and the connection between the fourth branch pipe 623 and the fourth heat exchange channel 122, are similar to the aforementioned connection methods and will not be described again here.

[0114] The following is combined Figure 4 The working principle of the aforementioned household air conditioner described in this application will be briefly introduced. For example... Figure 4As shown, in one embodiment, when operating in cooling mode, the first three-way valve 614 switches to connect the first main pipe 611 and the first branch pipe 612, and the second three-way valve 624 switches to connect the second main pipe 621 and the fourth branch pipe 623. Thermoacoustic machine 1, first fan 31, second fan 32, first pump body 51, and second pump body 52 are started and operated. During operation, thermoacoustic machine 1 generates heat and cooling through the thermoacoustic effect, which 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 hot-end heat exchanger 11 and the outdoor heat exchanger 21. When the first refrigerant 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 rising in temperature. When the first refrigerant continues to flow through the outdoor heat exchanger 21, it exchanges heat with the airflow in the outdoor environment, absorbing cooling from the outdoor environment and cooling down, thus completing the cycle. The second pump body 52 drives the second refrigerant to circulate between the cold-end heat exchanger 12 and the indoor heat exchanger 22. When the second refrigerant passes through the cold-end heat exchanger 12, it exchanges heat with the cold-end heat exchanger 12, absorbing the cold energy of the cold-end heat exchanger 12 and thus cooling down. When the second refrigerant continues to flow through the indoor heat exchanger 22, it exchanges heat with the air flow in the indoor environment, absorbing heat from the indoor air and thus heating up. Consequently, the temperature of the indoor air flow decreases, achieving indoor cooling.

[0115] When operating in heating mode, the first three-way valve 614 switches to connect the first main pipe 611 and the second branch pipe 613, and the second three-way valve 624 switches to connect the second main pipe 621 and the third branch pipe 622. Thermoacoustic unit 1, first fan 31, second fan 32, first pump body 51, and second pump body 52 start operation. During operation, thermoacoustic unit 1 generates heat and cooling through the thermoacoustic effect, which 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, absorbing the cooling energy and cooling down. When the first refrigerant continues to flow through the outdoor heat exchanger 21, it exchanges heat with the airflow in the outdoor environment, absorbing heat from the outdoor environment and heating up, thus completing the cycle. The second pump body 52 drives the second refrigerant to circulate between the hot-end heat exchanger 11 and the indoor heat exchanger 22. When the second refrigerant 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 rising in temperature. When the second refrigerant continues to flow through the indoor heat exchanger 22, it exchanges heat with the air flow in the indoor environment, absorbing the cold air in the indoor air and cooling down. Consequently, the temperature of the indoor air flow rises, thus achieving indoor heating.

[0116] The above configuration allows for switching between the two heat exchange channels in the first pipe group using the first three-way valve 614, and switching between the two heat exchange channels in the second pipe group using the second three-way valve 624. The outdoor heat exchanger 21 is an air-cooled heat exchanger, enabling heat exchange between the refrigerant and the environment. The indoor heat exchanger 22 is also an air-cooled heat exchanger, enabling heat exchange with the environment, thus allowing for temperature control. The freezing point of the first refrigerant is less than or equal to -40℃, which helps improve the operational stability of the heat pump under low or even ultra-low temperature outdoor conditions.

[0117] The following reference Figure 5 The fourth embodiment of the heat pump device of this application will be briefly described.

[0118] like Figure 5 As shown, based on the third 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. 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. In this application, the two cold-end heat exchangers 12 are facing each other (i.e., the two cold-end heat exchangers 12 are close to each other and arranged facing each other, see reference). Figure 3 Furthermore, a partition 16 is provided between the two cold-end heat exchangers 12 to separate the two thermoacoustic units. (Return to reference) Figure 5Each hot-end heat exchanger 11 has an independent first heat exchange channel 111 and a second heat exchange channel 112, and each cold-end heat exchanger 12 has an independent third heat exchange channel 121 and a fourth heat exchange channel 122. The outdoor heat exchanger 21 is selectively connected to either the two first heat exchange channels 111 or the two third heat exchange channels 121 via a first pipe assembly. The indoor heat exchanger 22 is selectively connected to either the two second heat exchange channels 112 or the two fourth heat exchange channels 122 via a second pipe assembly. Specifically, the outdoor heat exchanger 21 is located on a first main pipe 411. One end of the first main pipe 411 is simultaneously connected to both first heat exchange channels 111 via a first branch pipe 412 and simultaneously connected to both third heat exchange channels 121 via a second branch pipe 413. The first branch pipe 412 and the second branch pipe 413 are connected to the two ports of a first three-way valve 414. At this point, the two first heat exchange channels 111 and the two third heat exchange channels 121 form a parallel structure similar to that in electricity. The indoor heat exchanger 22 is installed on the second main pipe 421. One end of the second main pipe 421 is connected to the two second heat exchange channels 112 through the third branch pipe 422, and to the two fourth heat exchange channels 122 through the fourth branch pipe 423. At this point, the two second heat exchange channels 112 and the two fourth heat exchange channels 122 also form a parallel structure similar to that in electricity.

[0119] Thus, by setting two thermoacoustic units in thermoacoustic unit 1, not only can the cooling and heating capacity be doubled, but also the problem of high vibration and noise caused by a single thermoacoustic unit can be overcome by placing the two thermoacoustic units opposite each other. Placing the two thermoacoustic units within the same housing 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 housing 14. The specific working principle of the above embodiment can be referred to in the third embodiment, and will not be repeated here.

[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 first heat exchanger 21 is described using an air-cooled heat exchanger as an example, the specific form of the first heat exchanger 21 is not unique, and those skilled in the art can adjust it. For example, the first heat exchanger 21 can also be a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet. The liquid-cooled heat exchanger is configured to circulate with a liquid-cooling source through the liquid-cooled inlet and outlet, in which case the first fan 31 can be omitted. For example, the liquid-cooled heat exchanger can exchange heat with groundwater or cooling water in a cold water tank. Since the first heat exchanger 21 is a liquid-cooled heat exchanger, it can utilize energy of other grades (such as water) to achieve heat exchange of the refrigerant.

[0122] For example, in another alternative embodiment, the arrangement of the first heat exchanger 21 being circulatedly connected to the cold-end heat exchanger 12 via the first pipe 41 is not fixed. Those skilled in the art can adjust the heat exchange method between the first heat exchanger 21 and the cold-end heat exchanger 12. For instance, the first heat exchanger 21 can 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, which can be water, alcohol, ammonia solution, etc. By using a heat pipe heat exchanger for the first heat exchanger 21, the heat exchange effect can be improved, and the first pump body 51 can be omitted, reducing the system setup cost.

[0123] For example, in another alternative embodiment, the first heat exchanger 21 can also form a loop heat pipe with the cold-end heat exchanger 12 via a pipeline. In this case, the evaporator of the loop heat pipe is the first heat exchanger 21, and the liquid first refrigerant absorbs heat and vaporizes by exchanging heat with the environment in the evaporator. A capillary structure needs to be installed in the first 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 cools down and liquefies by exchanging heat with the cold energy in the cold-end heat exchanger 12. The first refrigerant fills the loop heat pipe and can be ammonia solution, Freon, water, etc. Forming a loop heat pipe between the first heat exchanger 21 and the cold-end heat exchanger 12 simplifies installation, eliminates the need for the first pump body 51, and is suitable for long-distance refrigerant transport.

[0124] For example, in another alternative embodiment, although the above embodiments are described with the example of a first refrigerant having a freezing point of -40°C or less, the specific selection of the first refrigerant is not fixed, and those skilled in the art can choose based on specific application scenarios. 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 0°C or less can be used. Similarly, the selection of water as the second refrigerant is merely an exemplary embodiment; in other application scenarios, those skilled in the art can choose other refrigerants to replace it.

[0125] For example, in another alternative implementation, in addition to using the second pipe 42 to connect the second heat exchanger 22 and the hot end heat exchanger 11, a loop heat pipe or other means can also be used to connect them, as long as the heat of the hot end heat exchanger 11 can be effectively discharged.

[0126] For example, although the above implementation is described in conjunction with the first heat exchanger 21 being an outdoor heat exchanger and the second heat exchanger 22 being an indoor heat exchanger, this is only a more preferred implementation. In other implementations, those skilled in the art can interchange the positions of the two, that is, the first heat exchanger 21 is an indoor heat exchanger and the second heat exchanger 22 is an outdoor heat exchanger, in which case the air conditioner is a cooling-only air conditioner.

[0127] For example, in another alternative embodiment, although the second heat exchanger 22 is described in conjunction with an air-cooled heat exchanger, the specific form of the second heat exchanger 22 is not unique, and those skilled in the art can make adjustments. For example, the second heat exchanger 22 can also be a liquid-cooled heat exchanger, which indirectly transfers heat or cold to the room for heat exchange with the indoor ambient air.

[0128] For example, in another alternative embodiment, the specific composition of the first pipe group is not unique. Those skilled in the art can adjust the specific form of the first pipe group, as long as the adjusted technical solution can achieve the condition of selective connection between the outdoor heat exchanger 21 and the first heat exchange channel 111 or the third heat exchange channel 121. For example, the first pipe group may also include a first main pipe 411, a first branch pipe 412, a second branch pipe 413, a first on-off valve, and a second on-off valve. The outdoor heat exchanger 21 and the first pump body 51 are disposed on the first main pipe 411, and the first on-off valve and the second on-off valve are disposed on the first branch pipe 412 and the second branch pipe 413, respectively. One end of the first main pipe 411 is simultaneously connected to one end of the first branch pipe 412 and one end of the second branch pipe 413, and the other end of the first main pipe 411 is simultaneously connected to the other end of the first branch pipe 412 and the other end of the second branch pipe 413. Furthermore, the first branch pipe 412 is also connected to the first heat exchange channel 111, and the second branch pipe 413 is also connected to the third heat exchange channel 121. The above setup allows for the switching of two heat exchange channels using two on / off valves.

[0129] For example, in another alternative embodiment, the specific composition of the second pipe assembly is not unique. Those skilled in the art can adjust the specific form of the second pipe assembly, as long as the adjusted technical solution can achieve the condition of selective communication between the indoor heat exchanger 22 and the second heat exchange channel 112 or the fourth heat exchange channel 122. For example, the second pipe assembly may also include a second main pipe 421, a third branch pipe 422, a fourth branch pipe 423, a third on-off valve, and a fourth on-off valve. The indoor heat exchanger 22 and the second pump body 52 are disposed on the second main pipe 421, and the third on-off valve and the fourth on-off valve are disposed on the third branch pipe 422 and the fourth branch pipe 423, respectively. One end of the second main pipe 421 is simultaneously connected to one end of the third branch pipe 422 and one end of the fourth branch pipe 423, and the other end of the second main pipe 421 is simultaneously connected to the other end of the third branch pipe 422 and the other end of the fourth branch pipe 423. Furthermore, the third branch pipe 422 is also connected to the second heat exchange channel 112, and the fourth branch pipe 423 is also connected to the fourth heat exchange channel 122. The above setup allows for the switching of two heat exchange channels using two on / off valves.

[0130] For example, in another alternative embodiment, although the above embodiment is described in conjunction with the first three-way valve 414 and the second three-way valve 424 as electromagnetic three-way valves, the specific configuration of the first three-way valve 414 and the second three-way valve 424 is not unique, and those skilled in the art can choose according to specific application scenarios. For example, one or both of the first three-way valve 414 and the second three-way valve 424 can also be selected as pneumatic three-way valves, hydraulic three-way valves, etc.

[0131] For example, in another alternative embodiment, although the second and fourth embodiments described above are both based on the example of two thermoacoustic units being arranged in the same housing 14, this is only a more preferred embodiment. In other embodiments, two separate thermoacoustic units can also be arranged opposite each other.

[0132] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the second and fourth embodiments described above are separated by a partition 16, this is only one possible approach. 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, resulting in low material costs and a more reliable and better heat exchange effect due to the integrated design.

[0133] For example, in another alternative implementation, although the second and fourth implementations described above are both based on the example of two cold-end heat exchangers 12 facing each other, this is only one possible implementation. The specific arrangement depends on the specific form of the heat exchange unit. For example, when the hot-end heat exchanger 11 is located at the outermost edge of the thermoacoustic unit, the two hot-end heat exchangers 11 can also be arranged to face each other.

[0134] 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.

[0135] For example, in another alternative embodiment, although the second and fourth embodiments described above are both illustrated by the example of two cold-end heat exchangers 12 and two hot-end heat exchangers 11 being connected in parallel, this is only used to illustrate the principle of this application and is not intended to limit the scope of protection of this application. Those skilled in the art will understand that in other embodiments, the connection method of the two cold-end heat exchangers 12 and two hot-end heat exchangers 11 can be changed to make this application applicable to more specific application scenarios. For example, in the second embodiment, the two cold-end heat exchangers 12 and two hot-end heat exchangers 11 are connected in series, that is, the first refrigerant passes through the two cold-end heat exchangers 12 before exchanging heat with the first heat exchanger 21, and the second refrigerant passes through the two hot-end heat exchangers 11 before entering the second heat exchanger 22 for heat exchange. As another example, in the fourth embodiment, some heat exchange channels are connected in series. For example, the first refrigerant passes through two first heat exchange channels 111 or two third heat exchange channels 121 before exchanging heat with the outdoor heat exchanger 21, and the second refrigerant passes through two second heat exchange channels 112 or two fourth heat exchange channels 122 before entering the indoor heat exchanger 22 for heat exchange.

[0136] For example, in another alternative embodiment, although the above embodiments are described in conjunction with household air conditioners, this is not intended to limit the scope of protection of this application. Those skilled in the art can apply this application to other application scenarios without departing from the principles of this application. For instance, the heat pump device of this application is also applicable to parking air conditioners, commercial air conditioners, heat pump water heaters, and other application scenarios. Specifically, when the thermoacoustic heat pump system is applied to a water heater, the second heat exchanger 22 can be configured as a heat exchange coil, which can be built into the water tank of the water heater to heat the water in the tank for user use.

[0137] 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 that are suitable for more specific application scenarios.

[0138] 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.

[0139] 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 heat pump apparatus, characterized by, The heat pump device comprises: a thermoacoustic engine having a cold-end heat exchanger and a hot-end heat exchanger; a first heat exchanger in heat exchange with the cold-end heat exchanger through a first cold carrier; a second heat exchanger in heat exchange with the hot-end heat exchanger through a second cold carrier.

2. Heat pump apparatus according to claim 1, characterised in that The first heat exchanger is an air-cooled heat exchanger, and the heat pump device further comprises a first fan corresponding to the first heat exchanger; or The first heat exchanger is a liquid-cooled heat exchanger having a liquid-cooled inlet and a liquid-cooled outlet, and the liquid-cooled heat exchanger is arranged to be capable of being in circulation communication with a liquid cooling source through the liquid-cooled inlet and the liquid-cooled outlet.

3. The heat pump apparatus according to claim 1, wherein The first heat exchanger is in circulation communication with the cold-end heat exchanger through a first pipeline, and the heat pump device further comprises a first pump body arranged in the first pipeline, and the first cold carrier is filled in the first pipeline.

4. Heat pump apparatus according to claim 3, characterised in that The freezing point of the first cold carrier is less than or equal to 0℃.

5. The heat pump apparatus according to claim 1, wherein The first heat exchanger is a heat pipe heat exchanger, the condensing end of the heat pipe heat exchanger is in heat exchange with the cold-end heat exchanger, and the first cold carrier is filled in the heat pipe heat exchanger; or The first heat exchanger and the cold-end heat exchanger constitute a loop heat pipe through a pipeline, and the first cold carrier is filled in the loop heat pipe.

6. The heat pump apparatus according to claim 1, wherein The second heat exchanger is an air-cooled heat exchanger, and the heat pump device further comprises a second fan corresponding to the second heat exchanger; or The second heat exchanger is a heat exchange coil.

7. The heat pump apparatus according to claim 1, wherein The second heat exchanger is in circulation communication with the hot-end heat exchanger through a second pipeline, and the heat pump device further comprises a second pump body arranged in the second pipeline, and the second cold carrier is filled in the second pipeline.

8. Heat pump apparatus according to claim 1, 2 or 6, characterised in that The first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.

9. Heat pump apparatus according to claim 8, characterised in that The hot-end heat exchanger has a first heat exchange flow channel and a second heat exchange flow channel independent of each other, and the cold-end heat exchanger has a third heat exchange flow channel and a fourth heat exchange flow channel independent of each other, The outdoor heat exchanger is selectively communicated with the first heat exchange flow channel or the third heat exchange flow channel through a first pipe group, and the first pipe group is filled with the first cold carrier; The indoor heat exchanger is selectively communicated with the second heat exchange flow channel or the fourth heat exchange flow channel through a second pipe group, and the second pipe group is filled with the second cold carrier; The heat pump device further comprises: a first pump body arranged in the first pipe group and used for driving the first cold carrier to circulate; a second pump body arranged in the second pipe group and used for driving the second cold carrier to circulate.

10. Heat pump apparatus according to claim 9, characterised in that The first pipe group comprises a first main pipe, a first branch pipe, a second branch pipe and a first three-way valve, the outdoor heat exchanger and the first pump body are arranged in the first main pipe, three interfaces of the first three-way valve are respectively communicated with one end of the first main pipe, one end of the first branch pipe and one end of the second branch pipe, the other end of the first branch pipe and the other end of the second branch pipe are simultaneously communicated with the other end of the first main pipe, the first branch pipe is further communicated with the first heat exchange flow channel, and the second branch pipe is further communicated with the third heat exchange flow channel.

11. The heat pump apparatus according to claim 9, wherein The first pipe group comprises a first main pipe, a first branch pipe, a second branch pipe, a first on-off valve and a second on-off valve, the outdoor heat exchanger and the first pump body are arranged in the first main pipe, the first on-off valve and the second on-off valve are arranged in the first branch pipe and the second branch pipe respectively, one end of the first main pipe is in communication with one end of the first branch pipe and one end of the second branch pipe simultaneously, the other end of the first main pipe is in communication with the other end of the first branch pipe and the other end of the second branch pipe simultaneously, the first branch pipe is further in communication with the first heat exchange flow channel, and the second branch pipe is further in communication with the third heat exchange flow channel.

12. The heat pump apparatus according to claim 9, wherein The second pipe group comprises a second main pipe, a third branch pipe, a fourth branch pipe and a second three-way valve, the indoor heat exchanger and the second pump body are arranged in the second main pipe, three interfaces of the second three-way valve are in communication with one end of the second main pipe, one end of the third branch pipe and one end of the fourth branch pipe respectively, the other end of the third branch pipe and the other end of the fourth branch pipe are in communication with the other end of the second main pipe simultaneously, the third branch pipe is further in communication with the second heat exchange flow channel, and the fourth branch pipe is further in communication with the fourth heat exchange flow channel.

13. The heat pump apparatus according to claim 9, wherein The second pipe group comprises a second main pipe, a third branch pipe, a fourth branch pipe, a third on-off valve and a fourth on-off valve, the indoor heat exchanger and the second pump body are arranged in the second main pipe, the third on-off valve and the fourth on-off valve are arranged in the third branch pipe and the fourth branch pipe respectively, one end of the second main pipe is in communication with one end of the third branch pipe and one end of the fourth branch pipe simultaneously, the other end of the second main pipe is in communication with the other end of the third branch pipe and the other end of the fourth branch pipe simultaneously, the third branch pipe is further in communication with the second heat exchange flow channel, and the fourth branch pipe is further in communication with the fourth heat exchange flow channel.

14. The heat pump apparatus according to claim 1, wherein The thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine; and / or the heat pump device is an air conditioner or a water heater.

15. The heat pump apparatus according to claim 1, wherein The thermoacoustic engine comprises two thermoacoustic units opposite to each other, each of the thermoacoustic units comprises a compression part and a heat exchange part, each of the heat exchange parts comprises the hot end heat exchanger, a regenerator and the cold end heat exchanger, the first heat exchanger exchanges heat with two of the cold end heat exchangers through a first cold carrier, and the second heat exchanger exchanges heat with two of the hot end heat exchangers through a second cold carrier.

16. The heat pump apparatus according to claim 9, wherein The thermoacoustic engine comprises two thermoacoustic units opposite to each other, each of the thermoacoustic units comprises a compression part and a heat exchange part, each of the heat exchange parts comprises the hot end heat exchanger, a regenerator and the cold end heat exchanger, each of the hot end heat exchangers has the first heat exchange flow channel and the second heat exchange flow channel which are independent of each other, each of the cold end heat exchangers has the third heat exchange flow channel and the fourth heat exchange flow channel which are independent of each other, the outdoor heat exchanger is in selective communication with two of the first heat exchange flow channels or two of the third heat exchange flow channels through a first pipe group, and the indoor heat exchanger is in selective communication with two of the second heat exchange flow channels or two of the fourth heat exchange flow channels through a second pipe group.

17. The heat pump apparatus according to claim 15, wherein Two of the thermo-acoustic units are arranged in the same housing, and the two heat exchanging parts are communicated with each other or separated by a partition plate; and / or The two cold end heat exchangers are opposite to each other.

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