Air conditioning system
By introducing thermoacoustic engines into the cold and hot end heat exchangers of the air conditioning system, combined with multi-mode operation and heat exchanger integration design, the problem of low efficiency of air conditioning under extreme temperatures is solved, achieving wider environmental applicability and efficient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
- Filing Date
- 2024-11-29
- Publication Date
- 2026-06-05
AI Technical Summary
Existing air conditioners are inefficient in high or low temperature environments and may even shut down, limiting their environmental applicability.
The cold-end heat exchanger and hot-end heat exchanger of the thermoacoustic engine are connected to two refrigerant cycles respectively. Heat transfer is achieved by utilizing the thermoacoustic effect. Through multi-mode operation and integrated design of heat exchangers, the operating efficiency and environmental applicability of the air conditioning system are improved.
Improving the operating efficiency of air conditioning systems under extreme temperatures, expanding their environmental applicability, reducing structural complexity, and enhancing system suitability and reliability.
Smart Images
Figure CN122149031A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air conditioning technology, and more specifically to an air conditioning system. Background Technology
[0002] Nowadays, air conditioners are a common household appliance and are well-known to the public. Traditional air conditioners use a vapor compression cycle, which uses a compressor to drive the refrigerant to circulate between the condenser, throttling element and evaporator, and uses the phase change of the refrigerant to achieve energy transfer.
[0003] However, traditional air conditioners are more efficient at specific temperatures, but their efficiency will drop significantly in some special environments such as high or low temperatures, and they may even shut down and become inoperable in extreme high or low temperatures.
[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention
[0005] To address at least one of the aforementioned problems in the prior art, namely, to solve the problem of limited environmental applicability of existing air conditioners, this application provides an air conditioning system, comprising:
[0006] A thermoacoustic machine having a cold-end heat exchanger and a hot-end heat exchanger;
[0007] The system comprises a first compressor, a first heat exchanger, and a first throttling element. The discharge port of the first compressor is connected to one end of the cold-end heat exchanger, the suction port of the first compressor is connected to one end of the first heat exchanger, and the two ends of the first throttling element are connected to the other end of the cold-end heat exchanger and the other end of the first heat exchanger, respectively.
[0008] The system comprises a second compressor, a second heat exchanger, and a second throttling element. The exhaust port of the second compressor is connected to one end of the first heat exchanger, and the intake port of the second compressor is connected to one end of the hot-end heat exchanger. The two ends of the second throttling element are respectively connected to the other ends of the second heat exchanger and the other ends of the hot-end heat exchanger.
[0009] The air conditioning system of this application, by connecting the cold-end heat exchanger and the hot-end heat exchanger of a thermoacoustic engine to two refrigerant cycles respectively, can utilize the thermoacoustic engine to improve the operating efficiency of the air conditioning system and expand its environmental applicability. Specifically, the thermoacoustic engine can use the thermoacoustic effect to transfer heat from the cold-end heat exchanger to the hot-end heat exchanger, and the cooling and heating generated during the operation of the thermoacoustic engine are displaced and used for the two refrigerant cycles respectively, improving the heat exchange effect and operating efficiency of the two refrigerant cycles. Furthermore, since the heat transfer process of the thermoacoustic engine is less affected by the external ambient temperature, the air conditioning system of this application has a significant advantage in operating efficiency. At the same time, since both the hot-end and cold-end heat exchangers of the thermoacoustic engine are connected to the refrigerant cycles, the temperature span can be further widened, improving the system's operating capability in ultra-low and ultra-high temperature environments.
[0010] In the preferred embodiment of the above-mentioned air conditioning system, the first heat exchanger is an air-cooled heat exchanger, and the air conditioning system further includes a first fan, which is correspondingly arranged with the first heat exchanger; and / or
[0011] The second heat exchanger is an air-cooled heat exchanger, and the air conditioning system also includes a second fan, which is configured corresponding to the second heat exchanger.
[0012] In the preferred embodiment of the above-mentioned air conditioning system, the air conditioning system further includes a third heat exchanger, the first end of which is connected to a refrigerant pipeline between one end of the hot end heat exchanger and the second throttling element, and the second end of which is connected to a refrigerant pipeline between the other end of the hot end heat exchanger and the suction port of the second compressor.
[0013] The air conditioning system also includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the hot-end heat exchanger or the third heat exchanger.
[0014] By installing a third heat exchanger, refrigerant can be circulated independently even when the thermoacoustic engine is not in operation, further improving the system's applicability to various scenarios and ensuring system operating efficiency.
[0015] In the preferred embodiment of the above-mentioned air conditioning system, at least one of the second heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or
[0016] The second heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger.
[0017] By having the second and third heat exchangers belong to the same heat exchanger, a high degree of integration and functional reuse of the heat exchangers can be achieved, thereby reducing the complexity of the system structure and improving the degree of system integration.
[0018] In the preferred embodiment of the above-mentioned air conditioning system, the air conditioning system further includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the second compressor, one end of the second heat exchanger, the confluence end of the hot end heat exchanger and the third heat exchanger, and the suction port of the second compressor.
[0019] By setting a four-way valve, the system can operate in multiple modes, further enhancing its applicability.
[0020] In the preferred embodiment of the above air conditioning system, the first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.
[0021] In the preferred embodiment of the above-mentioned air conditioning system, the thermoacoustic engine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. The exhaust port of the first compressor is connected to the first end of at least one cold-end heat exchanger. The first throttling element is connected to the second end of at least one cold-end heat exchanger. The intake port of the second compressor is connected to the first end of at least one hot-end heat exchanger. The second throttling element is connected to the second end of at least one hot-end heat exchanger.
[0022] 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.
[0023] In the preferred embodiment of the above-mentioned air conditioning system, 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.
[0024] 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.
[0025] In the preferred embodiment of the above-mentioned air conditioning system, the two cold-end heat exchangers are positioned opposite each other.
[0026] In the preferred embodiment of the above air conditioning system, the thermoacoustic engine is a free piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine. Attached Figure Description
[0027] The present application will now be described with reference to the accompanying drawings. In the drawings:
[0028] Figure 1 This is a system diagram of an air conditioning system according to the first embodiment of this application;
[0029] Figure 2 This is a system diagram of an air conditioning system according to the second embodiment of this application;
[0030] Figure 3 This is a system diagram of the first operating mode of the air conditioning system according to the second embodiment of this application;
[0031] Figure 4 This is a system diagram illustrating a second operating mode of an air conditioning system according to a second embodiment of this application.
[0032] Figure 5 A system diagram illustrating the third operating mode of the air conditioning system according to the second embodiment of this application;
[0033] Figure 6 This is a system diagram of the air conditioning system according to the third embodiment of this application;
[0034] Figure 7 This is a schematic diagram of the structure of the thermoacoustic generator of the air conditioning system according to the second embodiment of this application.
[0035] List of reference numerals
[0036] 1. Thermoacoustic unit; 11. Hot end heat exchanger; 12. Cold end heat exchanger; 13. Regenerator; 14. Shell; 15. Compression section; 16. Baffle; 21. First compressor; 22. Second compressor; 31. First heat exchanger; 32. Second heat exchanger; 33. Third heat exchanger; 41. First throttling element; 42. Second throttling element; 51. First fan; 52. Second fan; 61. First refrigerant line; 62. Second refrigerant line; 63. Third refrigerant line; 7. Valve body; 8. Four-way valve. Detailed Implementation
[0037] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.
[0038] It should be noted that in the description of this application, terms such as "upper," "lower," "left," and "right," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0039] 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.
[0040] First refer to Figure 1 This paper provides a brief description of the air conditioning system described in this application.
[0041] like Figure 1 As shown, to address the issue of limited environmental applicability of existing air conditioners, the air conditioning system of this application includes a thermoacoustic engine 1, a first compressor 21, a first heat exchanger 31, a first throttling element 41, a second compressor 22, a second heat exchanger 32, and a second throttling element 42. The thermoacoustic engine 1 has a cold-end heat exchanger 12 and a hot-end heat exchanger 11. The exhaust port of the first compressor 21 is connected to one end of the cold-end heat exchanger 12, and the intake port of the first compressor 21 is connected to one end of the first heat exchanger 31. The two ends of the first throttling element 41 are connected to the other ends of the cold-end heat exchanger 12 and the first heat exchanger 31, respectively. The exhaust port of the second compressor 22 is connected to one end of the second heat exchanger 32, and the intake port of the second compressor 22 is connected to one end of the hot-end heat exchanger 11. The two ends of the second throttling element 42 are connected to the other ends of the second heat exchanger 32 and the hot-end heat exchanger 11, respectively.
[0042] In one possible implementation, the first heat exchanger 31 is located outdoors for heat exchange with outdoor air, and the second heat exchanger 32 is located indoors for heat exchange with indoor air. When indoor heating is required, the thermoacoustic engine 1, the first compressor 21, and the second compressor 22 are started, and both the first throttling element 41 and the second throttling element 42 are opened to a certain degree. At this time, the thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling and heating at the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. The high-temperature, high-pressure gaseous refrigerant discharged from the first compressor 21 enters the cold-end heat exchanger 12 and exchanges heat with the cooling generated by the cold-end heat exchanger 12. After heat exchange, the refrigerant forms a liquid state. Then, the refrigerant passes through the first throttling element 41 to cool and depressurize, becoming a low-temperature, low-pressure gas-liquid mixture refrigerant, which then enters the first heat exchanger 31 to exchange heat with the outdoor ambient air. After heat exchange, the refrigerant forms a gaseous state and returns to the first compressor 21. The high-temperature, high-pressure gaseous refrigerant discharged from the second compressor 22 enters the second heat exchanger 32, where it exchanges heat with the indoor air, absorbing the cold air and thus raising the indoor air temperature, achieving indoor heating. After heat exchange, the refrigerant becomes liquid. The liquid refrigerant passes through the second throttling element 42 for cooling and depressurization, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure gas-liquid mixture enters the hot-end heat exchanger 11, where it exchanges heat with the heat generated by the hot-end heat exchanger 11, raising the refrigerant temperature and causing it to vaporize. The vaporized refrigerant then returns to the second compressor 22.
[0043] The air conditioning system of this application, by connecting the cold-end heat exchanger 12 and the hot-end heat exchanger 11 of the thermoacoustic engine 1 to two refrigerant cycles respectively, can utilize the thermoacoustic engine 1 to improve the operating efficiency of the air conditioning system and expand its environmental applicability. Specifically, the thermoacoustic engine 1 can use the thermoacoustic effect to transfer heat from the cold-end heat exchanger 12 to the hot-end heat exchanger 11, and displace the cooling and heating generated by the thermoacoustic engine 1 during operation for use in the two refrigerant cycles respectively, thereby improving the heat exchange effect and operating efficiency of the two refrigerant cycles. Furthermore, since the heat transfer process of the thermoacoustic engine 1 is less affected by the ambient temperature, the air conditioning system of this application has a significant advantage in operating efficiency. At the same time, since both the hot-end heat exchanger 11 and the cold-end heat exchanger 12 of the thermoacoustic engine 1 are connected to the refrigerant cycles, the temperature span can be further widened, improving the system's operating capability in ultra-low and ultra-high temperature environments.
[0044] The following is combined with Figure 1 The first embodiment of the air conditioning system of this application will be described in detail.
[0045] like Figure 1 As shown, in the first embodiment, the air conditioning system is used in a household and includes a thermoacoustic machine 1, a first compressor 21, a first heat exchanger 31, a first throttling element 41, a first fan 51, a second compressor 22, a second heat exchanger 32, a second throttling element 42, and a second fan 52.
[0046] 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.
[0047] Whether it's a free-piston Stirling thermoacoustic engine or a resonant tube thermoacoustic engine, their basic principle is as follows: The thermoacoustic engine 1 contains a cavity for storing compressible gases such as helium or nitrogen, and it also has a special acoustic structure. A driving device (such as a linear compressor or linear motor) drives a piston to move at high speed and reciprocate, generating sound waves. When these sound waves propagate through the gas, a thermoacoustic effect is produced, causing gas molecules to undergo periodic compression and expansion. The special acoustic structure allows the sound waves to produce strong compression and expansion in specific regions. During the compression phase, collisions between gas molecules increase, converting kinetic energy into internal energy, leading to an increase in gas temperature. During the expansion phase, the gas does work, reducing internal energy and lowering temperature. The resonant tube or acoustic resonant cavity enhances the effect of the sound waves, and due to the reflection and superposition of sound waves, relatively stable compression and expansion regions are formed in specific areas, thus creating cold and hot ends within the cavity, respectively. Furthermore, by setting up a cold end heat exchanger 12 and a hot end heat exchanger 11 at the cold end and the hot end respectively, and setting up a regenerator 13 between the two heat exchangers, the heat and cold energy can be exported and utilized.
[0048] The first compressor 21, the cold-end heat exchanger 12, the first throttling element 41, and the first heat exchanger 31 are circulated together via the first refrigerant pipeline 61. Specifically, the discharge port of the first compressor 21 is connected to one end of the cold-end heat exchanger 12. Figure 1 The lower end shown is connected, and the other end of the cold end heat exchanger 12 (shown below) is connected. Figure 1 The upper end shown) and one end of the first throttling element 41 ( Figure 1 The right end shown is connected, and the other end of the first throttling element 41 ( Figure 1 The left end shown) and one end of the first heat exchanger 31 (shown) Figure 1 The right end shown is connected to the other end of the first heat exchanger 31. Figure 1 The left end (shown) is connected to the air intake of the first compressor 21. The first heat exchanger 31 is an air-cooled heat exchanger, located outdoors. A first fan 51 is positioned corresponding to the first heat exchanger 31. When the first fan 51 starts, it draws outdoor air through the first heat exchanger 31, exchanging heat with the refrigerant inside. The first throttling element 41 is preferably an electronic expansion valve.
[0049] The second compressor 22, the second heat exchanger 32, the second throttling element 42, and the hot-end heat exchanger 11 are circulated together via the second refrigerant pipeline 62. Specifically, the discharge port of the second compressor 22 is connected to one end of the second heat exchanger 32. Figure 1The right end shown is connected to the other end of the second heat exchanger 32. Figure 1 The left end shown) and one end of the second throttling element 42 ( Figure 1 The right end shown is connected, and the other end of the second throttling element 42 ( Figure 1 The left end shown) and one end of the hot end heat exchanger 11 (shown on the left) Figure 1 The upper end shown is connected, and the other end of the hot end heat exchanger 11 (shown at the upper end) is connected. Figure 1 The lower end (as shown) is connected to the air intake of the second compressor 22. The second heat exchanger 32 is an air-cooled heat exchanger, located indoors. The second fan 52 is positioned corresponding to the second heat exchanger 32. When the second fan 52 starts, it drives indoor air to flow through the second heat exchanger 32 and exchange heat with the second refrigerant flowing through it. Preferably, the second relay element is an electronic expansion valve.
[0050] It should be noted that, although not explicitly stated in the above embodiments, those skilled in the art will understand that the types of refrigerant filled in the first refrigerant line 61 and the second refrigerant line 62 can be the same or different. For example, the first refrigerant line 61 can be filled with a refrigerant with a lower freezing point to adapt to lower outdoor ambient temperatures, while the second refrigerant line 62 can be filled with a refrigerant with a lower boiling point for better heat exchange.
[0051] The following is combined with Figure 1 The working principle of the air conditioning system according to the first embodiment of this application will be briefly introduced.
[0052] like Figure 1As shown, when indoor heating is required, the thermoacoustic engine 1, the first compressor 21, and the second compressor 22 start operation. The first throttling element 41 and the second throttling element 42 each open to a certain degree, and the first fan 51 and the second fan 52 start operation. The thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling and heating in the cold-end heat exchanger 12 and the hot-end heat exchanger 11, respectively. The high-temperature, high-pressure gaseous refrigerant discharged from the first compressor 21 first passes through the cold-end heat exchanger 12, exchanging heat with the cooling energy inside the cold-end heat exchanger 12. After heat exchange, the refrigerant cools down and becomes liquid. The liquid refrigerant is cooled and depressurized by the first throttling element 41, becoming a low-temperature, low-pressure gas-liquid mixture refrigerant. When the low-temperature, low-pressure gas-liquid mixture refrigerant flows through the first heat exchanger 31, it exchanges heat with the outdoor ambient air, absorbing heat from the outdoor ambient air and heating up to form a gaseous state. The gaseous refrigerant then flows back to the first compressor 21. The high-temperature, high-pressure gaseous refrigerant discharged from the second compressor 22 enters the second heat exchanger 32, where it exchanges heat with the indoor air, absorbing the cold air and thus raising the indoor air temperature, achieving indoor heating. After heat exchange, the refrigerant becomes liquid. The liquid refrigerant passes through the second throttling element 42 for cooling and depressurization, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure gas-liquid mixture enters the hot-end heat exchanger 11, where it exchanges heat with the heat generated by the hot-end heat exchanger 11, raising the refrigerant temperature and causing it to vaporize. The vaporized refrigerant then returns to the second compressor 22.
[0053] The following reference Figures 2 to 5 The second specific embodiment of the thermoacoustic heat pump device of this application will be described.
[0054] like Figure 2 As shown, based on the first embodiment, the air conditioning system of this embodiment adds a four-way valve 8, a third heat exchanger 33, a valve body 7, and a third refrigerant pipe 63. Specifically, the third heat exchanger 33 is also an air-cooled heat exchanger, and the second heat exchanger 32 and the third heat exchanger 33 belong to the same heat exchanger. The arrangement of the two is not limited in this application. For example, they can be arranged side by side along the airflow direction, or side by side or top and bottom, etc., and their internal flow paths are independent of each other and do not affect each other. The third heat exchanger 33 is installed on the third refrigerant pipe 63, and the first end of the third refrigerant pipe 63 ( Figure 2 The upper end shown is connected to one end of the hot-end heat exchanger 11. Figure 2 On the second refrigerant line 62 between the upper end shown and the second throttling element 42, at the second end of the third refrigerant line 63 (shown at the upper end), Figure 2 The lower end shown is connected to the other end of the hot-end heat exchanger 11. Figure 2 The first fan 51 can act on the second heat exchanger 32 and the third heat exchanger 33 simultaneously. In other words, when the first fan 51 is started, it can drive the outdoor ambient air to flow through the second heat exchanger 32 and the third heat exchanger 33 simultaneously or sequentially.
[0055] Valve body 7 is a three-way control valve, and the first port of the three-way control valve ( Figure 2 Middle right interface), second interface ( Figure 2 (Middle and upper side interface) and third interface ( Figure 2 The left-hand interface is connected to the suction port of the second compressor 22, one end of the hot-end heat exchanger 11, and one end of the third heat exchanger 33, respectively. The first interface of the three-way control valve can be selectively connected to the second or third interface to change the direction of refrigerant flow.
[0056] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the second compressor 22, one end of the second heat exchanger 32, the confluence of the hot-end heat exchanger 11 and the third heat exchanger 33, and the suction port of the second compressor 22. The confluence of the hot-end heat exchanger 11 and the third heat exchanger 33 is also one port of the four-way valve 8 connected to one end of the hot-end heat exchanger 11. Figure 2 (shown at the lower end) and one end of the third heat exchanger 33 (shown at the lower end) and one end Figure 2 The left end shown is simultaneously connected; more specifically, this port of the four-way valve 8 is connected to the first port of the three-way control valve. Figure 2 The right-hand interface is connected.
[0057] The following is combined with Figures 3 to 5 The working principle of the second embodiment of the air conditioning system of this application will be introduced.
[0058] First refer to Figure 3 When the outdoor ambient temperature is low and users have heating needs, the system operates in ultra-low temperature heating mode: at this time, thermoacoustic motor 1, first compressor 21, second compressor 22, first fan 51, and second fan 52 start operation, the first throttling element 41 and the second throttling element 42 each open to a certain degree, and the first port of the three-way control valve ( Figure 3 Right side interface) and second interface ( Figure 3(Upper interface) connected. During the operation of the thermoacoustic machine 1, heat and cold are generated through the thermoacoustic effect, and the heat and cold are absorbed by the hot-end heat exchanger 11 and the cold-end heat exchanger 12, respectively. The high-temperature and high-pressure gaseous refrigerant discharged from the first compressor 21 first passes through the cold-end heat exchanger 12, where it exchanges heat with the cold energy inside the cold-end heat exchanger 12. After heat exchange, the refrigerant cools down and depressurizes, becoming liquid. The liquid refrigerant then passes through the first throttling element 41, where it cools down and depressurizes, becoming a low-temperature and low-pressure gas-liquid mixture. When the low-temperature and low-pressure gas-liquid mixture flows through the first heat exchanger 31, it exchanges heat with the outdoor ambient air, absorbing heat from the outdoor ambient air and rising in temperature to form a gaseous state. The gaseous refrigerant then flows back to the first compressor 21. The high-temperature and high-pressure gaseous refrigerant discharged from the second compressor 22 first passes through the second heat exchanger 32, where it exchanges heat with the indoor air, thus raising the indoor air temperature and achieving indoor heating. The refrigerant absorbs the cold energy from the indoor air and cools down to become liquid refrigerant. The liquid refrigerant continues to flow through the second throttling element 42, where it cools and depressurizes to become a low-temperature, low-pressure gas-liquid mixture. When the low-temperature, low-pressure refrigerant passes through the hot-end heat exchanger 11, it absorbs heat from the hot-end heat exchanger 11 and rises in temperature to vaporize. The vaporized refrigerant then returns to the second compressor 22 to continue the cycle.
[0059] Next, refer to Figure 4 When the outdoor ambient temperature is high and there is a heating demand, the system operates in normal heating mode: at this time, the second compressor 22, the first fan 51, and the second fan 52 start running, the thermoacoustic machine 1 and the first compressor 21 stop, the second throttling element 42 opens to a certain degree, and the first port of the three-way control valve ( Figure 4 Right side interface) and third interface ( Figure 4 (Left interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from the second compressor 22 first passes through the second heat exchanger 32, where it exchanges heat with the indoor air to heat the room. After heat exchange, the refrigerant cools down to a liquid state. The liquid refrigerant continues to flow through the second throttling element 42, where it cools and depressurizes to become a low-temperature, low-pressure gas-liquid mixture. When the low-temperature, low-pressure refrigerant passes through the third heat exchanger 33, it exchanges heat with the outdoor air, absorbs heat from the outdoor air, and vaporizes. The vaporized refrigerant returns to allow the compressor to continue its cycle.
[0060] Finally refer to Figure 5 When a user has a cooling need, the system operates in cooling mode: at this time, the four-way valve 8 reverses, the second compressor 22, the first fan 51, and the second fan 52 start running, the thermoacoustic machine 1 and the first compressor 21 stop, the second throttling element 42 opens to a certain degree, and the first port of the three-way control valve ( Figure 5 Right side interface) and third interface ( Figure 5(Left interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor first passes through the third heat exchanger 33, where it exchanges heat with the outdoor ambient air, cooling down to become liquid refrigerant. The liquid refrigerant continues to flow through the second throttling element 42, where it cools and depressurizes, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure refrigerant exchanges heat with the indoor air as it passes through the second heat exchanger 32, absorbing heat and vaporizing, thus lowering the indoor air temperature and achieving cooling. The vaporized refrigerant then returns to the second compressor 22 to continue the cycle.
[0061] By incorporating a third heat exchanger 33, independent refrigerant circulation can be achieved even when the thermoacoustic engine 1 is not operating, further enhancing the system's applicability and ensuring operational efficiency. Since the second and third heat exchangers 32 and 33 belong to the same heat exchanger, high integration and functional reuse of the heat exchangers can be achieved, thereby reducing system structural complexity and increasing system integration. The inclusion of a four-way valve 8 enables multi-mode operation of the system, further expanding its applicability.
[0062] Next, refer to Figure 6 and Figure 7 The third embodiment of the air conditioning system of this application will be briefly described.
[0063] like Figure 6 and Figure 7 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 7 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 6 The discharge port of the first compressor 21 is connected to the first end of at least one cold-end heat exchanger 12, and the first throttling element 41 is connected to the second end of at least one cold-end heat exchanger 12. The suction port of the second compressor 22 is connected to the first end of at least one hot-end heat exchanger 11, and the second throttling element 42 is connected to the second end of at least one hot-end heat exchanger 11. Specifically, the discharge port of the first compressor 21 is simultaneously connected to the first ends of two cold-end heat exchangers 12. Figure 6The lower end shown is connected, and one end of the first throttling element 41 is simultaneously connected to the second end of the two cold end heat exchangers 12. Figure 6 The upper end of the two cold-end heat exchangers 12 is connected, forming a structure similar to a "parallel" connection in electrical circuitry. The suction port of the second compressor 22 is simultaneously connected to the first end of each of the two hot-end heat exchangers 11. Figure 6 The lower end shown is connected, and one end of the second throttling element 42 is simultaneously connected to the second end of the two hot-end heat exchangers 11. Figure 6 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.
[0064] Thus, by setting two thermoacoustic units in the thermoacoustic unit 1, not only can the cooling and heating capacity be doubled, but the problem of high vibration and noise caused by a single thermoacoustic unit can also be overcome by placing the two thermoacoustic units opposite each other. Placing the two thermoacoustic units within the same housing 14 and separating the heat exchange sections by a partition 16 simplifies the manufacturing process, eliminating the need for specific design of the interior of the housing 14. The working principle of the above embodiment can be referred to the first embodiment, and will not be repeated here.
[0065] 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.
[0066] For example, in an alternative embodiment, although all the above embodiments are described with the example of the first heat exchanger 31 being located outdoors and the second heat exchanger 32 being located indoors, the locations of the first heat exchanger 31 and the second heat exchanger 32 are not limited to this. Those skilled in the art can choose the locations of the first heat exchanger 31 and the second heat exchanger 32 based on the specific application scenario. For example, in all the above embodiments, the first heat exchanger 31 can also be located indoors and the second heat exchanger 32 can be located outdoors, in which case the air conditioning system can be used for high-temperature heating scenarios.
[0067] For example, in another alternative embodiment, although the above embodiment is described with the first heat exchanger 31, the second heat exchanger 32, and the third heat exchanger 33 all being air-cooled heat exchangers as an example, the specific form of the heat exchangers is not unique, and those skilled in the art can adjust them. For example, at least one of the heat exchangers can also be replaced with a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet, and is configured to circulate with a liquid-cooling source through the liquid-cooled inlet and outlet. For example, the liquid-cooled heat exchanger can exchange heat with groundwater or cooling water in a cold water tank. Moreover, when the heat exchanger is a liquid-cooled heat exchanger, the corresponding fan can be omitted.
[0068] For example, in another alternative embodiment, the arrangement of the second heat exchanger 32 and the third heat exchanger 33 belonging to the same heat exchanger in the second embodiment is only a preferred option. In other embodiments, those skilled in the art can also separate and set them independently, for example, setting two outdoor heat exchangers, each of which operates independently and is equipped with a fan or water-cooling components. This replacement of the arrangement does not deviate from the principle of this application.
[0069] For example, in another alternative embodiment, although the first heat exchanger 31 is described in conjunction with its use for indoor cooling or heating, the specific function of the first heat exchanger 31 is not fixed. Those skilled in the art can select it based on specific scenarios. For example, the first heat exchanger 31 can also be a coil heat exchanger, which is installed in a water tank to produce domestic hot water. Furthermore, the first heat exchanger 31 can also be a plate heat exchanger or a shell-and-tube heat exchanger, etc., which is used for indoor heating, etc.
[0070] For example, in another alternative implementation, the above-described implementation is introduced by taking the setting of a three-way control valve to change the refrigerant flow direction as an example. However, this setting method is only exemplary. In other implementations, the three-way control valve can be replaced with two on / off valves (such as solenoid valves) to achieve the same adjustment of the flow direction.
[0071] For example, in another alternative embodiment, although the second embodiment described above is illustrated with an example of having a four-way valve 8, this is merely a preferred embodiment. With the four-way valve 8 provided, simple switching between different modes can be achieved. Of course, those skilled in the art can omit the four-way valve 8.
[0072] For example, in another alternative embodiment, although the third embodiment described above is based on the example of two thermoacoustic units being arranged in the same housing 14, this is only a preferred embodiment. In other embodiments, two separate thermoacoustic units 1 can also be arranged opposite each other.
[0073] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the third embodiment above are separated by a partition 16, this is only one possible way. In another embodiment, the two heat exchange sections can also be connected to each other. In this case, the two cold end heat exchangers 12 are located in the same expansion chamber. In this way, the two heat exchange sections are connected to each other, the material cost is low, and the integrated design has higher reliability and better heat exchange effect.
[0074] For example, in another alternative implementation, although the third implementation described above is based on the example of two cold-end heat exchangers 12 facing each other, this is only one possible implementation. The specific arrangement depends on the specific form of the heat exchange unit. For example, when the hot-end heat exchanger 11 is located at the outermost edge of the thermoacoustic unit, the two hot-end heat exchangers 11 can also be arranged to face each other.
[0075] 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.
[0076] For example, in another alternative embodiment, although the third embodiment described above is illustrated by setting both the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 in parallel, this is only used to illustrate the principle of this application and is not intended to limit the scope of protection of this application. Those skilled in the art will understand that in other embodiments, the connection method of the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 can also be changed so that this application can be applied to more specific application scenarios. For example, the two cold-end heat exchangers 12 and the two hot-end heat exchangers 11 are respectively connected in series, that is, the refrigerant discharged from the first compressor 21 passes through the two cold-end heat exchangers 12 before entering the first throttling element 41 for throttling and pressure reduction, and the refrigerant after the second throttling element 42 passes through the two hot-end heat exchangers 11 before returning to the second compressor 22.
[0077] For example, in another alternative embodiment, although the above embodiments are described in conjunction with a household air conditioning system, this is not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can apply this application to other application scenarios. For example, the air conditioning system of this application is also applicable to application scenarios such as commercial air conditioning.
[0078] Of course, the alternative implementation methods described above, as well as the alternative implementation methods and preferred implementation methods, can be used in combination to create new implementation methods suitable for more specific application scenarios. For example, the thermoacoustic machine 1 in the third implementation method can also be applied to the second implementation method.
[0079] 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.
[0080] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.
Claims
1. An air conditioning system, characterized in that, include: A thermoacoustic machine having a cold-end heat exchanger and a hot-end heat exchanger; The system comprises a first compressor, a first heat exchanger, and a first throttling element. The discharge port of the first compressor is connected to one end of the cold-end heat exchanger, the suction port of the first compressor is connected to one end of the first heat exchanger, and the two ends of the first throttling element are connected to the other end of the cold-end heat exchanger and the other end of the first heat exchanger, respectively. The system comprises a second compressor, a second heat exchanger, and a second throttling element. The exhaust port of the second compressor is connected to one end of the second heat exchanger, and the intake port of the second compressor is connected to one end of the hot-end heat exchanger. The two ends of the second throttling element are respectively connected to the other ends of the second heat exchanger and the other ends of the hot-end heat exchanger.
2. The air conditioning system according to claim 1, characterized in that, The first heat exchanger is an air-cooled heat exchanger, and the air conditioning system further includes a first fan, which is correspondingly arranged with the first heat exchanger; and / or The second heat exchanger is an air-cooled heat exchanger, and the air conditioning system also includes a second fan, which is configured corresponding to the second heat exchanger.
3. The air conditioning system according to claim 1, characterized in that, The air conditioning system further includes a third heat exchanger, the first end of which is connected to a refrigerant pipeline between one end of the hot end heat exchanger and the second throttling element, and the second end of which is connected to a refrigerant pipeline between the other end of the hot end heat exchanger and the suction port of the second compressor. The air conditioning system also includes a valve body or valve assembly, which is configured to selectively control the flow of refrigerant through the hot-end heat exchanger or the third heat exchanger.
4. The air conditioning system according to claim 3, characterized in that, At least one of the second heat exchanger and the third heat exchanger is an air-cooled heat exchanger; and / or The second heat exchanger and the third heat exchanger are independent of each other or belong to different parts of the same heat exchanger.
5. The air conditioning system according to claim 3, characterized in that, The air conditioning system also includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the second compressor, one end of the second heat exchanger, the confluence of the hot end heat exchanger and the third heat exchanger, and the suction port of the second compressor.
6. The air conditioning system according to claim 1, characterized in that, The first heat exchanger is an outdoor heat exchanger, and the second heat exchanger is an indoor heat exchanger.
7. The air conditioning system according to claim 1, characterized in that, The thermoacoustic engine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. The exhaust port of the first compressor is connected to a first end of at least one cold-end heat exchanger. The first throttling element is connected to a second end of at least one cold-end heat exchanger. The intake port of the second compressor is connected to a first end of at least one hot-end heat exchanger. The second throttling element is connected to a second end of at least one hot-end heat exchanger.
8. The air conditioning system according to claim 7, characterized in that, The two thermoacoustic units are housed in the same housing, and the two heat exchange sections are connected to each other or separated by a partition.
9. The air conditioning system according to claim 7, characterized in that, The two cold-end heat exchangers are positioned opposite each other.
10. The air conditioning system according to claim 1, characterized in that, The thermoacoustic machine is a free piston Stirling thermoacoustic machine or a resonant tube thermoacoustic machine.