Trigeneration system

Abstract

This invention relates to the field of heat pump technology, specifically to a combined cooling, heating, and power (CCHP) system. This application aims to solve the problem of poor operating efficiency of vapor compression heat pumps at low temperatures. To this end, the CCHP system of this application includes: a thermoelectric generator, comprising a cold-end heat exchanger, a first hot-end heat exchanger, and a second hot-end heat exchanger; a first outdoor heat exchange section, exchanging heat with the cold-end heat exchanger via a first refrigerant; a compressor, circulatingly connected to the first hot-end heat exchanger via a first refrigerant pipeline; a throttling element, disposed in the first refrigerant pipeline and located between the compressor's exhaust port and one end of the first hot-end heat exchanger; an indoor heat exchanger, disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element; a first heat storage device and a second heat storage device, both filled with water and both connected to the second hot-end heat exchanger. The CCHP system of this application can achieve operation across a wide temperature range, improving operating efficiency and energy-saving effects at low temperatures.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and more specifically to a combined cooling, heating, and power (CCHP) system. Background Technology

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

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

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address at least one of the aforementioned problems in the prior art, namely, to solve the problem of poor low-temperature operating efficiency of vapor compression heat pumps, this application provides a combined cooling, heating, and power (CCHP) system, comprising:

[0006] A thermoacoustic machine, comprising a cold-end heat exchanger, a first hot-end heat exchanger, and a second hot-end heat exchanger.

[0007] The first outdoor heat exchange section exchanges heat with the cold end heat exchanger through a first refrigerant.

[0008] The compressor is circulated and connected to the first hot-end heat exchanger via a first refrigerant pipeline;

[0009] A throttling element is disposed in the first refrigerant pipeline and located between the exhaust port of the compressor and one end of the first hot end heat exchanger;

[0010] An indoor heat exchanger is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element;

[0011] A first thermal storage device and a second thermal storage device, both of which are filled with water and are connected to a second hot-end heat exchanger, wherein one of the first thermal storage device and the other is used for domestic hot water and the other for heating.

[0012] The combined heat and power (CHP) system of this application, by simultaneously incorporating a thermoacoustic engine and a compressor, combines the thermoacoustic engine with a vapor compression cycle to achieve high-temperature operation and improve operating efficiency and energy saving at low temperatures. Specifically, by setting up a first and second hot-end heat exchanger in the thermoacoustic engine, with the compressor circulated with the first hot-end heat exchanger, and the first and second heat storage devices connected to the second hot-end heat exchanger, heat can be provided to the indoor heat exchanger or to the first and second heat storage devices in low-temperature environments through the cascading effect of the thermoacoustic engine and compressor, thereby enhancing the system's operational capacity. Furthermore, since the heat transfer process during thermoacoustic engine operation is less affected by the ambient temperature, the CHP system of this application has significant advantages in operating efficiency and energy saving compared to traditional heat pumps. In addition, the water stored in the first and second heat storage devices can exchange heat with the second hot-end heat exchanger, making heat transfer more direct and reducing heat loss during the heat exchange process, further improving system efficiency.

[0013] In the preferred embodiment of the above-mentioned combined heat and power system, the first outdoor heat exchange section is circulatedly connected to the cold-end heat exchanger through a first refrigerant pipeline. The combined heat and power system further includes a first pump body, which is disposed in the first refrigerant pipeline, and a first refrigerant is filled in the first refrigerant pipeline; or

[0014] The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and a first refrigerant is filled in the heat pipe heat exchanger; or

[0015] The first outdoor heat exchange section and the cold end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe.

[0016] In the preferred technical solution of the above-mentioned combined heat and power system, the combined heat and power system further includes a second outdoor heat exchange unit and a second refrigerant pipeline. The second outdoor heat exchange unit is disposed on the second refrigerant pipeline. The first end of the second refrigerant pipeline is connected to the first refrigerant pipeline between one end of the first hot end heat exchanger and the throttling element. The second end of the second refrigerant pipeline is connected to the refrigerant pipeline between the other end of the first hot end heat exchanger and the suction port of the compressor.

[0017] The tri-generation system also includes a first valve section, which is configured to selectively control the flow of refrigerant through the first hot-end heat exchanger or the second outdoor heat exchange section.

[0018] By installing a second outdoor heat exchange section and a second refrigerant pipeline, separate circulation between the compressor and the indoor heat exchanger can be achieved, expanding the system's applicable scenarios. The refrigerant flow direction can be controlled by installing a first valve section.

[0019] In the preferred embodiment of the above-mentioned combined heat and power system, at least one of the first outdoor heat exchange unit and the second outdoor heat exchange unit is an air-cooled heat exchanger, and the combined heat and power system further includes a first fan, which is provided corresponding to the first outdoor heat exchange unit and the second outdoor heat exchange unit; and / or

[0020] The first outdoor heat exchange section and the second outdoor heat exchange section are independent of each other or belong to different parts of the same heat exchanger.

[0021] By having the first outdoor heat exchange section and the second outdoor heat exchange section belong to the same heat exchanger, a high degree of integration and functional reuse of the heat exchanger can be achieved, thereby reducing the complexity of the system structure and improving the degree of system integration.

[0022] In the preferred technical solution of the above-mentioned combined heat and power system, the combined heat and power system further includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, one end of the indoor heat exchanger, the confluence end of the first hot end heat exchanger and the second outdoor heat exchange section, and the suction port of the compressor.

[0023] By setting up a four-way valve, the operating modes of the system can be expanded, thus broadening the applicable scenarios of the system.

[0024] In the preferred embodiment of the above-mentioned combined heat and power 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 first hot-end heat exchanger, a second hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. The first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant. The suction port of the compressor is connected to the first end of at least one of the first hot-end heat exchangers. One end of the throttling element is connected to the second end of at least one of the first hot-end heat exchangers. The first heat storage device and the second heat storage device are both connected to the two second hot-end heat exchangers.

[0025] 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.

[0026] In the preferred embodiment of the aforementioned combined heat and power (CHP) system, the two thermoacoustic units are housed within the same housing, and the two heat exchange sections are either interconnected or separated by a partition; and / or

[0027] The two cold-end heat exchangers are positioned opposite each other.

[0028] 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.

[0029] In the preferred embodiment of the above-mentioned combined heat and power system, the first thermal storage device is circulatedly connected to the second hot-end heat exchanger through a first water pipeline. The second thermal storage device is disposed on a second water pipeline. One end of the second water pipeline is connected to a first water pipeline between one end of the second hot-end heat exchanger and one port of the first thermal storage device, and the other end of the second water pipeline is connected to a first water pipeline between the other end of the second hot-end heat exchanger and the other port of the first thermal storage device.

[0030] In the preferred embodiment of the aforementioned combined heat and power (CHP) system, the indoor heat exchanger has a first heat exchange path and a second heat exchange path capable of exchanging heat with each other. The first heat exchange path is located in the first refrigerant pipeline, and the second heat exchange path is located in the first water pipeline. The CHP system further includes a second pump body, which is located in the first water pipeline; or

[0031] The combined cooling, heating, and power system further includes an intermediate heat exchanger, which has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is disposed in the first water pipeline.

[0032] By configuring a first and second heat exchange flow path in the indoor heat exchanger, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger, thus improving the system's versatility. Similarly, by configuring an intermediate heat exchanger with a third and fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, further enhancing the system's versatility.

[0033] In the preferred embodiment of the aforementioned combined heat and power (CHP) system, the CHP system further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second hot-end heat exchanger. The CHP system also includes a second valve, which is configured to selectively control the water flow through the bypass pipeline or the second hot-end heat exchanger; and / or

[0034] The combined cooling, heating, and power system further includes a first valve body and a second valve body. The first valve body is disposed on the first water pipeline between one end of the first heat storage device and one end of the second water pipeline, and the second valve body is disposed on the second water pipeline.

[0035] By setting up a bypass pipeline, the water flow direction can be controlled, thereby avoiding heat loss caused by water flowing through the second hot-end heat exchanger and improving system operating efficiency. By setting up a first valve body and a second valve body, the water flow direction can also be controlled, facilitating the independent operation of the two thermal storage devices.

[0036] In the preferred embodiment of the above-mentioned combined heat and power system, the indoor heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline. The combined heat and power system further includes a second pump body, a third pump body, and a third water pipeline. The second pump body is disposed in the first water pipeline between one end of the second hot-end heat exchanger and one end of the second water pipeline. The second heat exchange flow path and the third pump body are disposed in the third water pipeline. One end of the third water pipeline is connected to the first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device. The other end of the third water pipeline is connected to the first water pipeline between the second pump body and the other port of the first heat storage device; or

[0037] The combined cooling, heating, and power system further includes a second pump body, an intermediate heat exchanger, and a third water pipeline. The second pump body is disposed on the first water pipeline. The intermediate heat exchanger has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed on the first refrigerant pipeline and is located between the exhaust port of the compressor and the throttling element. The fourth heat exchange flow path is disposed on the third water pipeline. One end of the third water pipeline is connected to the first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device. The other end of the third water pipeline is connected to the first water pipeline between the other end of the second hot-end heat exchanger and the second pump body.

[0038] By configuring a first and second heat exchange flow path in the indoor heat exchanger and installing a third water pipe, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger, thus improving the system's versatility. Alternatively, by configuring an intermediate heat exchanger and a third water pipe, with the intermediate heat exchanger having a third and fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, further improving the system's versatility.

[0039] In the preferred embodiment of the aforementioned combined heat and power (CHP) system, the CHP system further includes a first valve body and a second valve body. The first valve body is disposed on a first water pipeline between one end of the first thermal storage device and one end of the third water pipeline, and the second valve body is disposed on the second water pipeline; and / or

[0040] The combined cooling, heating, and power system further includes a third valve body and a fourth valve body. The third valve body is located on the first water pipeline between one end of the second hot-end heat exchanger and one end of the second water pipeline, and the fourth valve body is located on the third water pipeline.

[0041] By setting up a first and a second valve body, the water flow direction can be controlled, facilitating the independent operation of the two thermal storage devices. By setting up a third and a fourth valve body, energy loss of water can be avoided, improving system operating efficiency.

[0042] In the preferred technical solution of the above-mentioned combined heat and power system, the first thermal storage device, the second thermal storage device, and the second hot-end heat exchanger are circulated and connected through the first water pipeline.

[0043] In the preferred embodiment of the aforementioned combined heat and power (CHP) system, the indoor heat exchanger has a first heat exchange path and a second heat exchange path capable of exchanging heat with each other. The first heat exchange path is located in the first refrigerant pipeline, and the second heat exchange path is located in the first water pipeline. The CHP system further includes a second pump body, which is located in the first water pipeline; or

[0044] The combined cooling, heating, and power system further includes an intermediate heat exchanger, which has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is disposed in the first water pipeline.

[0045] By configuring a first and second heat exchange flow path in the indoor heat exchanger, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger, thus improving the system's versatility. Similarly, by configuring an intermediate heat exchanger with a third and fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, further enhancing the system's versatility.

[0046] In the preferred embodiment of the above-mentioned combined heat and power system, the combined heat and power system further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second hot end heat exchanger. The combined heat and power system also includes a second valve, which is configured to selectively control the water flow through the bypass pipeline or the second hot end heat exchanger.

[0047] By setting up a bypass pipeline, the direction of water flow can be controlled, thereby avoiding heat loss caused by water flowing through the second hot end heat exchanger and improving system operating efficiency.

[0048] In the preferred embodiment of the above-mentioned combined heat and power system, the indoor heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipeline. The combined heat and power system further includes a second pump body and a third water pipeline. The second pump body is disposed in the first water pipeline, and the second heat exchange flow path is disposed in the third water pipeline. One end of the third water pipeline is connected to the first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device, and the other end of the third water pipeline is connected to the first water pipeline between the other end of the second hot-end heat exchanger and one port of the second heat storage device.

[0049] By setting up a first heat exchange flow path and a second heat exchange flow path in the indoor heat exchanger, and setting up a third water pipe, heat exchange between the refrigerant and water can be realized. This allows the heat from the refrigerant to be used for heating the water, or the heat from the water to be used for the indoor heat exchanger, thus improving the applicability of the system.

[0050] In the preferred technical solution of the above-mentioned combined heat and power system, the combined heat and power system further includes a fifth valve body, a sixth valve body, a seventh valve body, and a third pump body. The fifth valve body is disposed on a first water pipeline between one end of the second hot-end heat exchanger and one end of the third water pipeline. The sixth valve body and the third pump body are disposed on the third water pipeline. The seventh valve body is disposed on a first water pipeline between one port of the first heat storage device or the second heat storage device and one end of the third water pipeline. The second pump body is disposed on a first water pipeline between one end of the second hot-end heat exchanger and one end of the third water pipeline.

[0051] By setting the fifth, sixth, and seventh valve bodies, the flow direction of water can be controlled, avoiding energy loss of water and improving system operating efficiency.

[0052] In the preferred embodiment of the above-mentioned combined cooling, heating, and power (CCHP) system, the CCHP system further includes a second pump body, an intermediate heat exchanger, and a third water pipeline. The second pump body is disposed on the first water pipeline. The intermediate heat exchanger has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed on the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed on the third water pipeline. One end of the third water pipeline is connected to a first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device or the second heat storage device. The other end of the third water pipeline is connected to a first water pipeline between the other end of the second hot-end heat exchanger and the second pump body.

[0053] By setting up an intermediate heat exchanger and a third water pipeline, and the intermediate heat exchanger is equipped with a third heat exchange flow path and a fourth heat exchange flow path, heat exchange between the refrigerant and the water can be realized, thereby using the heat of the refrigerant to heat the water, or using the heat of the water to circulate the refrigerant, thus improving the applicability of the system.

[0054] In the preferred technical solution of the above-mentioned combined heat and power system, the combined heat and power system further includes a fifth valve body and a sixth valve body. The fifth valve body is disposed on the first water pipeline between one end of the second hot end heat exchanger and one end of the third water pipeline, and the sixth valve body is disposed on the third water pipeline.

[0055] By setting the fifth and sixth valve bodies, the flow direction of water can be controlled, avoiding energy loss of water and improving system operating efficiency.

[0056] In the preferred technical solution of the above-mentioned combined heat and power system, one of the first and second thermal storage devices is a water heater or domestic water tank, and the other is a floor heating coil, radiator, or heating water tank.

[0057] The water heater or the domestic water tank has a circulation inlet and a circulation outlet, and the water heater or the domestic water tank is directly or indirectly connected to the second hot-end heat exchanger through the circulation inlet and the circulation outlet.

[0058] The underfloor heating coil, the radiator, or the heating water tank has a return water inlet and a water outlet. The underfloor heating coil, the radiator, or the heating water tank is directly or indirectly connected to the second hot-end heat exchanger through the return water inlet and the water outlet. Solution 1. A combined cooling, heating, and power (CCHP) system, characterized in that it includes: A thermoacoustic machine, comprising a cold-end heat exchanger, a first hot-end heat exchanger, and a second hot-end heat exchanger. The first outdoor heat exchange section exchanges heat with the cold end heat exchanger through a first refrigerant. The compressor is circulated and connected to the first hot-end heat exchanger via a first refrigerant pipeline; A throttling element is disposed in the first refrigerant pipeline and located between the exhaust port of the compressor and one end of the first hot end heat exchanger; An indoor heat exchanger is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element; A first thermal storage device and a second thermal storage device, both of which are filled with water and are connected to a second hot-end heat exchanger, wherein one of the first thermal storage device and the other is used for domestic hot water and the other for heating. Option 2. The combined cooling, heating, and power (CCHP) system according to Option 1, characterized in that the first outdoor heat exchange section is circulatedly connected to the cold-end heat exchanger through a first refrigerant pipeline, and the CCHP system further includes a first pump body, the first pump body being disposed in the first refrigerant pipeline, and a first refrigerant filling the first refrigerant pipeline; or The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and a first refrigerant is filled in the heat pipe heat exchanger; or The first outdoor heat exchange section and the cold end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe. Scheme 3. The combined heat and power system according to Scheme 1, characterized in that the combined heat and power system further includes a second outdoor heat exchange section and a second refrigerant pipeline, the second outdoor heat exchange section is disposed on the second refrigerant pipeline, the first end of the second refrigerant pipeline is connected to a first refrigerant pipeline between one end of the first hot end heat exchanger and the throttling element, and the second end of the second refrigerant pipeline is connected to a refrigerant pipeline between the other end of the first hot end heat exchanger and the suction port of the compressor; The tri-generation system also includes a first valve section, which is configured to selectively control the flow of refrigerant through the first hot-end heat exchanger or the second outdoor heat exchange section. Option 4. The combined heat and power system according to Option 3, characterized in that at least one of the first outdoor heat exchange section and the second outdoor heat exchange section is an air-cooled heat exchanger, and the combined heat and power system further includes a first fan, which is provided corresponding to the first outdoor heat exchange section and the second outdoor heat exchange section; and / or The first outdoor heat exchange section and the second outdoor heat exchange section are independent of each other or belong to different parts of the same heat exchanger. Option 5. The combined cooling, heating, and power supply system according to Option 3, characterized in that the combined cooling, heating, and power supply system further includes a four-way valve, wherein the four ports of the four-way valve are respectively connected to the exhaust port of the compressor, one end of the indoor heat exchanger, the confluence end of the first hot end heat exchanger and the second outdoor heat exchange section, and the intake port of the compressor. Option 6. The combined cooling, heating, and power (CCHP) system 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 first hot-end heat exchanger, a second hot-end heat exchanger, a regenerator and a cold-end heat exchanger, the first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant, the suction port of the compressor is connected to the first end of at least one of the first hot-end heat exchangers, one end of the throttling element is connected to the second end of at least one of the first hot-end heat exchangers, and the first heat storage device and the second heat storage device are both connected to the two second hot-end heat exchangers. Option 7. The combined cooling, heating, and power (CCHP) system according to Option 6, characterized in that the two thermoacoustic units are disposed in the same housing, and the two heat exchange sections are connected to each other or separated by a partition; and / or The two cold-end heat exchangers are positioned opposite each other. Option 8. The tri-generation system according to any one of Options 1 to 7, characterized in that the first heat storage device is circulatedly connected to the second hot-end heat exchanger through a first water pipeline, the second heat storage device is disposed on a second water pipeline, one end of the second water pipeline is connected to a first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device, and the other end of the second water pipeline is connected to a first water pipeline between the other end of the second hot-end heat exchanger and the other port of the first heat storage device. Option 9. The combined cooling, heating, and power (CCHP) system according to Option 8, characterized in that the indoor heat exchanger has a first heat exchange path and a second heat exchange path capable of exchanging heat with each other, the first heat exchange path being disposed in the first refrigerant pipeline, the second heat exchange path being disposed in the first water pipeline, and the CCHP system further comprising a second pump body disposed in the first water pipeline; or The combined cooling, heating, and power system further includes an intermediate heat exchanger, which has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is disposed in the first water pipeline. Option 10. The combined cooling, heating, and power (CCHP) system according to Option 9, characterized in that the CCHP system further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second hot-end heat exchanger; the CCHP system further includes a second valve, the second valve being configured to selectively control the water flow through the bypass pipeline or the second hot-end heat exchanger; and / or The combined cooling, heating, and power system further includes a first valve body and a second valve body. The first valve body is disposed on the first water pipeline between one end of the first heat storage device and one end of the second water pipeline, and the second valve body is disposed on the second water pipeline. Option 11. The combined heat and power system according to Option 8, characterized in that the indoor heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other, the first heat exchange flow path is disposed in the first refrigerant pipeline, the combined heat and power system further includes a second pump body, a third pump body and a third water pipeline, the second pump body is disposed in the first water pipeline between one end of the second hot end heat exchanger and one end of the second water pipeline, the second heat exchange flow path and the third pump body are disposed in the third water pipeline, one end of the third water pipeline is connected to the first water pipeline between one end of the second hot end heat exchanger and one port of the first heat storage device, and the other end of the third water pipeline is connected to the first water pipeline between the second pump body and the other port of the first heat storage device; or The combined cooling, heating, and power system further includes a second pump body, an intermediate heat exchanger, and a third water pipeline. The second pump body is disposed on the first water pipeline. The intermediate heat exchanger has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed on the first refrigerant pipeline and is located between the exhaust port of the compressor and the throttling element. The fourth heat exchange flow path is disposed on the third water pipeline. One end of the third water pipeline is connected to the first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device. The other end of the third water pipeline is connected to the first water pipeline between the other end of the second hot-end heat exchanger and the second pump body. Option 12. The combined heat and power (CHP) system according to Option 11, characterized in that the CHP system further includes a first valve body and a second valve body, the first valve body being disposed on a first water pipeline between one port of the first thermal storage device and one end of the third water pipeline, and the second valve body being disposed on the second water pipeline; and / or The combined cooling, heating, and power system further includes a third valve body and a fourth valve body. The third valve body is located on the first water pipeline between one end of the second hot-end heat exchanger and one end of the second water pipeline, and the fourth valve body is located on the third water pipeline. Scheme 13. The combined heat and power system according to any one of Schemes 1 to 7, characterized in that the first heat storage device, the second heat storage device and the second hot end heat exchanger are circulated and connected through a first water pipeline. Option 14. The combined cooling, heating, and power (CCHP) system according to Option 13, characterized in that the indoor heat exchanger has a first heat exchange path and a second heat exchange path capable of exchanging heat with each other, the first heat exchange path being disposed in the first refrigerant pipeline, the second heat exchange path being disposed in the first water pipeline, and the CCHP system further comprising a second pump body disposed in the first water pipeline; or The combined cooling, heating, and power system further includes an intermediate heat exchanger, which has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is disposed in the first water pipeline. Option 15. The combined cooling, heating, and power system according to Option 14, characterized in that the combined cooling, heating, and power system further includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second hot-end heat exchanger, and the combined cooling, heating, and power system further includes a second valve, which is configured to selectively control the flow of water through the bypass pipeline or the second hot-end heat exchanger. Option 16. The combined heat and power system according to Option 13, characterized in that the indoor heat exchanger has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other, the first heat exchange flow path is disposed in the first refrigerant pipeline, the combined heat and power system further includes a second pump body and a third water pipeline, the second pump body is disposed in the first water pipeline, the second heat exchange flow path is disposed in the third water pipeline, one end of the third water pipeline is connected to the first water pipeline between one end of the second hot end heat exchanger and one port of the first heat storage device, and the other end of the third water pipeline is connected to the first water pipeline between the other end of the second hot end heat exchanger and one port of the second heat storage device. Option 17. The combined heat and power system according to Option 16, characterized in that the combined heat and power system further includes a fifth valve body, a sixth valve body, a seventh valve body, and a third pump body; the fifth valve body is disposed on a first water pipeline between one end of the second hot-end heat exchanger and one end of the third water pipeline; the sixth valve body and the third pump body are disposed on the third water pipeline; the seventh valve body is disposed on a first water pipeline between one port of the first heat storage device or the second heat storage device and one end of the third water pipeline; and the second pump body is disposed on a first water pipeline between one end of the second hot-end heat exchanger and one end of the third water pipeline. Option 18. The combined cooling, heating, and power (CCHP) system according to Option 13, characterized in that the CCHP system further includes a second pump body, an intermediate heat exchanger, and a third water pipeline. The second pump body is disposed in the first water pipeline. The intermediate heat exchanger has a third heat exchange flow path and a fourth heat exchange flow path capable of exchanging heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the third water pipeline. One end of the third water pipeline is connected to a first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device or the second heat storage device. The other end of the third water pipeline is connected to a first water pipeline between the other end of the second hot-end heat exchanger and the second pump body. Scheme 19. The combined heat and power system according to Scheme 18, characterized in that the combined heat and power system further includes a fifth valve body and a sixth valve body, the fifth valve body being disposed on a first water pipeline between one end of the second hot end heat exchanger and one end of the third water pipeline, and the sixth valve body being disposed on the third water pipeline. Option 20. The combined heat and power system according to Option 1, characterized in that one of the first and second heat storage devices is a water heater or domestic water tank, and the other is a floor heating coil, radiator, or heating water tank. The water heater or the domestic water tank has a circulation inlet and a circulation outlet, and the water heater or the domestic water tank is directly or indirectly connected to the second hot-end heat exchanger through the circulation inlet and the circulation outlet. The underfloor heating coil, the radiator, or the heating water tank has a return water inlet and a water outlet. The underfloor heating coil, the radiator, or the heating water tank is directly or indirectly connected to the second hot-end heat exchanger through the return water inlet and the water outlet. Attached Figure Description

[0059] The present application will now be described with reference to the accompanying drawings. In the drawings:

[0060] Figure 1 A system diagram of a combined cooling, heating, and power (CCHP) system according to the first embodiment of this application;

[0061] Figure 2 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the second embodiment of this application;

[0062] Figure 3 A system diagram of the first operating mode of the combined heat and power system according to the second embodiment of this application;

[0063] Figure 4 A system diagram illustrating the second operating mode of the combined heat and power (CHP) system according to the second embodiment of this application;

[0064] Figure 5 A system diagram illustrating the third operating mode of the combined heat and power (CHP) system according to the second embodiment of this application;

[0065] Figure 6 A system diagram illustrating the fourth operating mode of the combined heat and power (CHP) system according to the second embodiment of this application;

[0066] Figure 7 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the third embodiment of this application;

[0067] Figure 8 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the fourth embodiment of this application;

[0068] Figure 9 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the fifth embodiment of this application;

[0069] Figure 10 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the sixth embodiment of this application;

[0070] Figure 11 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the seventh embodiment of this application;

[0071] Figure 12 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the eighth embodiment of this application;

[0072] Figure 13 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the ninth embodiment of this application.

[0073] Figure 14 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the tenth embodiment of this application;

[0074] Figure 15 This is a system diagram of a combined cooling, heating, and power (CCHP) system according to the eleventh embodiment of this application;

[0075] Figure 16 This is a schematic diagram of the thermoacoustic generator of the tri-generation system according to the eleventh embodiment of this application.

[0076] List of reference numerals

[0077] 1. Thermoacoustic engine; 11. First hot-end heat exchanger; 12. Second hot-end heat exchanger; 13. Cold-end heat exchanger; 14. Regenerator; 15. Shell; 16. Compression section; 17. Baffle; 21. First outdoor heat exchange section; 22. Second outdoor heat exchange section; 23. Indoor heat exchanger; 24. First heat storage device; 25. Second heat storage device; 26. Intermediate heat exchanger; 31. First valve section; 32. Second valve section; 33. First valve body; 34. Second valve body; 35. 36. Third valve body; 37. Fourth valve body; 38. Fifth valve body; 39. Sixth valve body; 30. Seventh valve body; 41. First fan; 42. Second fan; 51. First refrigerant line; 52. Second refrigerant line; 53. First cooling line; 54. First water line; 55. Second water line; 56. Third water line; 57. Bypass line; 61. First pump body; 62. Second pump body; 63. Third pump body; 7. Compressor; 8. Four-way valve; 9. Throttling element. Detailed Implementation

[0078] 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.

[0079] 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," "third," "fourth," "fifth," "sixth," and "seventh" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] 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.

[0081] First refer to Figure 1 This paper provides a brief introduction to the multi-unit heating system described in this application.

[0082] like Figure 1As shown, to address the problem of poor low-temperature operating efficiency in vapor compression heat pumps, the combined cooling, heating, and power (CCHP) system of this application includes a thermoacoustic unit 1, a first outdoor heat exchanger 21, a compressor 7, a throttling element 9, an indoor heat exchanger 23, a first heat storage device 24, and a second heat storage device 25. The thermoacoustic unit 1 includes a cold-end heat exchanger 13, a first hot-end heat exchanger 11, and a second hot-end heat exchanger 12. The first outdoor heat exchanger 21 and the cold-end heat exchanger 13 exchange heat via a first refrigerant. The compressor 7 and the first hot-end heat exchanger 11 are circulated together via a first refrigerant pipeline 51. The throttling element 9 is located in the first refrigerant pipeline 51 and between the exhaust port of the compressor 7 and one end of the first hot-end heat exchanger 11. The indoor heat exchanger 23 is located in the first refrigerant pipeline 51 and between the exhaust port of the compressor 7 and the throttling element 9. Both the first heat storage device 24 and the second heat storage device 25 are filled with water, and both are connected to the second hot end heat exchanger 12. One of the first heat storage device 24 and the second heat storage device 25 is used for domestic hot water, and the other is used for heating.

[0083] In one possible application scenario, taking the first thermal storage device 24 for producing domestic hot water and the second thermal storage device 25 for heating as an example, when domestic hot water and heating are needed, the thermoacoustic engine 1 operates, and the compressor 7 stops. The thermoacoustic engine 1 utilizes the thermoacoustic effect to generate cooling in the cold-end heat exchanger 13 and heat in the first hot-end heat exchanger 11 and the second hot-end heat exchanger 12. The heat from the cold-end heat exchanger 13 is transferred to the first outdoor heat exchange section 21 through the first refrigerant, for example, it can be discharged to the outdoor environment through the first outdoor heat exchanger 21. The heat from the second hot-end heat exchanger 12 is transferred to the first thermal storage device 24 and the second thermal storage device 25 through the water in the first thermal storage device 24 and the second thermal storage device 25, thereby realizing the production of domestic hot water and heating.

[0084] When indoor heating is required, compressor 7 and thermoacoustic motor 1 operate simultaneously. The high-temperature, high-pressure refrigerant discharged from compressor 7 first flows through indoor heat exchanger 23, where it exchanges heat with indoor air to heat the room. After heat exchange, the refrigerant becomes liquid. The liquid refrigerant passes through throttling element 9 for pressure reduction and then enters first hot-end heat exchanger 11, absorbing heat from it. The temperature of the refrigerant increases significantly after heat exchange, and it then turns into a gaseous state and returns to compressor 7, where its temperature can be further increased.

[0085] The combined heat and power (CHP) system of this application, by simultaneously incorporating a thermoacoustic engine 1 and a compressor 7, combines the thermoacoustic engine 1 with a vapor compression cycle to achieve high-temperature operation and improve operating efficiency and energy saving at low temperatures. Specifically, by incorporating a first hot-end heat exchanger 11 and a second hot-end heat exchanger 12 into the thermoacoustic engine 1, with the compressor 7 circulated with the first hot-end heat exchanger 11, and the first heat storage device 24 and the second heat storage device 25 connected to the second hot-end heat exchanger 12, heat can be provided to the indoor heat exchanger 23 through the cascading of the thermoacoustic engine 1 and the compressor 7 in low-temperature environments, or heat can be provided to the first heat storage device 24 and the second heat storage device 25 through the thermoacoustic engine 1, thereby improving the system's operating capacity. Furthermore, since the heat transfer process during the operation of the thermoacoustic engine 1 is less affected by the ambient temperature, the CHP system of this application has significant advantages in operating efficiency and energy saving compared to traditional heat pumps. In addition, the water stored in the first heat storage device 24 and the second heat storage device 25 can exchange heat with the second hot end heat exchanger 12, making the heat transfer more direct and reducing heat loss during the heat exchange process, thereby further improving system efficiency.

[0086] The following is combined Figure 1 This paper provides a detailed description of the first implementation method of the combined cooling, heating, and power (CCHP) system of this application.

[0087] like Figure 1 As shown, in the first embodiment, the tri-generation system is a household tri-generation system, which includes a thermoacoustic unit 1, a first outdoor heat exchange unit 21, an indoor heat exchanger 23, a first heat storage device 24, a second heat storage device 25, a first pump body 61, a second pump body 62, a first fan 41, a second fan 42, a compressor 7, a throttling element 9, a first valve body 33, and a second valve body 34.

[0088] 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.

[0089] 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 piston driven by a driving device (such as a linear compressor or linear motor) moves at high speed and reciprocates to generate sound waves. When these sound waves propagate through the gas, a thermoacoustic effect is generated, 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 the sound waves, relatively stable compression and expansion regions are formed in specific areas, thus creating cold and hot ends within the cavity. Furthermore, by installing heat exchangers at the cold and hot ends respectively, and a regenerator 14 between the two heat exchangers, the heat and cold energy can be extracted and utilized. Specifically, this application provides a cold-end heat exchanger 13 at the cold end and a first hot-end heat exchanger 11 and a second hot-end heat exchanger 12 at the hot end. The arrangement of the first hot-end heat exchanger 11 and the second hot-end heat exchanger 12 is not limited in this application; they can be arranged side-by-side along the direction of sound wave transmission, nested together in a direction perpendicular to the direction of sound wave transmission, or arranged intersectingly or alternately along the direction of sound wave transmission. In short, the goal is to ensure that the first hot-end heat exchanger 11 and the second hot-end heat exchanger 12 are reasonably arranged at the hot end of the cavity, allowing the medium in both heat exchangers to exchange heat with the hot end.

[0090] The first outdoor heat exchange section 21 is an air-cooled heat exchanger, which is circulatedly connected to the cold-end heat exchanger 13 through the first refrigerant pipeline 53. A first fan 41 is installed corresponding to the first outdoor heat exchange section 21. When the first fan 41 starts, it drives outdoor air to flow through the first outdoor heat exchange section 21 and exchange heat with the first refrigerant flowing through it. A first pump body 61 is installed in the first refrigerant pipeline 53. When the first pump body 61 starts, it drives the first refrigerant to circulate between the first outdoor heat exchange section 21 and the cold-end heat exchanger 13. The first refrigerant is selected from those with a freezing point of 0°C or less, more preferably 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.

[0091] The indoor heat exchanger 23 is an air-cooled heat exchanger used for heat exchange with indoor air. The compressor 7, indoor heat exchanger 23, throttling element 9, and first hot-end heat exchanger 11 are circulated together via the first refrigerant pipeline 51. Specifically, the exhaust port of the compressor 7 is connected to one end of the indoor heat exchanger 23. Figure 1 The right end shown is connected to the other end of the indoor heat exchanger 23. Figure 1 The left end shown) and one end of the throttling element 9 ( Figure 1 The right end shown is connected, and the other end of the throttling element 9 ( Figure 1 The left end shown) and one end of the first hot end heat exchanger 11 (shown on the left) Figure 1 The upper end shown is connected, and the other end of the first hot end heat exchanger 11 (shown) is connected. Figure 1 The lower end (shown) is connected to the suction port of the compressor 7. The throttling element 9 is preferably an electronic expansion valve. The second fan 42 is positioned corresponding to the indoor heat exchanger 23. When the second fan 42 starts, it drives the surrounding indoor air to flow through the indoor heat exchanger 23, exchanging heat with the refrigerant flowing through the indoor heat exchanger 23.

[0092] The first heat storage device 24 is a domestic water tank, which has a circulation inlet and a circulation outlet. The domestic water tank stores water and is circulatedly connected to the second hot-end heat exchanger 12 through its circulation inlet and outlet. More specifically, the first heat storage device 24 is circulatedly connected to the second hot-end heat exchanger 12 through a first water pipe 54. The second heat storage device 25 is a heating terminal in this application, more specifically a radiator. The radiator stores heating water and has a return outlet and a water outlet. The radiator is connected to the first water pipe 54 through the return outlet and the water outlet. More specifically, the second heat storage device 25 is installed on the second water pipe 55, with one end of the second water pipe 55 (… Figure 1 The upper end shown is connected to one end of the second hot-end heat exchanger 12. Figure 1 The upper end shown) and one port of the first thermal storage device 24 ( Figure 1 The other end of the first water pipe 54 (shown at the upper end) and the second water pipe 55 (shown at the upper end) Figure 1 The lower end shown is connected to the other end of the second hot-end heat exchanger 12. Figure 1 The lower end shown) and another port of the first thermal storage device 24 ( Figure 1 The first water pipe 54 is located between the lower end shown. The second pump body 62 is disposed in the first water pipe 54, and more specifically at one end of the second hot end heat exchanger 12. Figure 1 The lower end shown) and one end of the second water pipe 55 ( Figure 1 The water is located on the first water pipe 54 between the lower end shown. When the second pump body 62 starts, it drives the water to circulate between the second hot end heat exchanger 12, the first heat storage device 24, and the second heat storage device 25.

[0093] Both the first valve body 33 and the second valve body 34 are solenoid valves, wherein the first valve body 33 is disposed at one port of the first heat storage device 24. Figure 1 The upper end shown) and one end of the second water pipe 55 ( Figure 1 The second valve body 34 is located on the first water pipe 54 between the upper end shown in the figure and the second water pipe 55.

[0094] The following is combined Figure 1 The working principle of the tri-generation system according to the first embodiment of this application will be briefly introduced.

[0095] like Figure 1 As shown, when there is an indoor heating demand, the thermoacoustic engine 1 and compressor 7 start running, the throttling element 9 opens to a certain degree, the first fan 41, the second fan 42, and the first pump body 61 start running, and the second pump body 62 stops. On one hand, the thermoacoustic engine 1 uses the thermoacoustic effect to generate cooling at the cold end heat exchanger 13 and heat at the first hot end heat exchanger 11 and the second hot end heat exchanger 12. The first pump body 61 drives the first refrigerant to circulate in the first refrigerant pipeline 53. When flowing through the cold end heat exchanger 13, the first refrigerant absorbs the cooling energy of the cold end heat exchanger 13. When the first refrigerant flows through the first outdoor heat exchange section 21, the first refrigerant exchanges heat with the outdoor ambient air, thereby discharging the cooling energy to the outdoor environment through the first outdoor heat exchange section 21. On the other hand, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 7 first passes through the indoor heat exchanger 23. The refrigerant exchanges heat with the indoor air in the indoor heat exchanger 23, thereby raising the temperature of the indoor air and realizing indoor heating. After heat exchange, the refrigerant cools down and becomes liquid. The liquid refrigerant is cooled and depressurized by the throttling element 9 and becomes a low-temperature, low-pressure gas-liquid mixture refrigerant. When the low-temperature, low-pressure gas-liquid mixture refrigerant flows through the first hot end heat exchanger 11, it absorbs the heat from the hot end heat exchanger and heats up to form a gas. The gaseous refrigerant flows back to the compressor 7 for a second heating.

[0096] When there is a demand for heating and domestic hot water production, the thermoacoustic unit 1 operates independently, the compressor 7 stops, the first fan 41, the first pump body 61, and the second pump body 62 start running, the first valve body 33 and the second valve body 34 open, and the second fan 42 stops. The thermoacoustic unit 1 utilizes the thermoacoustic effect to generate cooling at the cold end heat exchanger 13 and heat at the first hot end heat exchanger 11 and the second hot end heat exchanger 12. The first pump body 61 drives the first refrigerant to circulate in the first refrigerant pipeline 53. When flowing through the cold end heat exchanger 13, the first refrigerant absorbs the cooling energy of the cold end heat exchanger 13. When the first refrigerant flows through the first outdoor heat exchange section 21, the first refrigerant exchanges heat with the outdoor ambient air, thereby discharging the cooling energy to the outdoor environment through the first outdoor heat exchange section 21. The second pump body 62 drives water to flow in the first water pipe 54 and the second water pipe 55. When the water flows through the second hot-end heat exchanger 12, it absorbs heat from the heat exchanger 12 and its temperature rises. When the heated water flows into the first heat storage device 24, it produces domestic hot water. When the heated water flows through the second heat storage device 25, it dissipates heat into the room, providing indoor heating. Of course, when only heating or only the production of domestic hot water is needed, the first valve body 33 or the second valve body 34 can be closed accordingly.

[0097] In addition, if there is a demand for heating, domestic hot water production, and heating at the same time, the above two modes can be operated simultaneously. The specific operating principle will not be elaborated here.

[0098] The above configuration, which connects the first heat storage device 24 and the second heat storage device 25 in parallel and includes a first valve body 33 and a second valve body 34, facilitates the independent operation of heating and hot water production functions, improves system efficiency, and avoids excessive heat loss. Furthermore, the freezing point of the first refrigerant is less than or equal to -40°C, which helps improve the system's operational stability in low or even ultra-low outdoor temperatures, enabling the system to operate stably in ultra-low temperature environments.

[0099] The following is combined Figures 2 to 6 The second implementation of the tri-generation system of this application will be described.

[0100] like Figure 2 As shown, based on the first embodiment, this embodiment of the tri-generation system adds a second outdoor heat exchanger 22, a second refrigerant pipeline 52, a third water pipeline 56, a four-way valve 8, a first valve section 31, a third valve body 35, a fourth valve body 36, and a third pump body 63. Additionally, the structure of the indoor heat exchanger 23 is adjusted. Specifically, the second outdoor heat exchanger 22 is also an air-cooled heat exchanger, and the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22 belong to the same heat exchanger. Their arrangement is not limited in this application; for example, they can be arranged side-by-side along the airflow direction, or side-by-side or top-and-bottom, etc., and their internal flow paths are independent and do not affect each other. The second outdoor heat exchanger 22 is located on the second refrigerant pipeline 52, and the first end of the second refrigerant pipeline 52 ( Figure 2 The upper end shown is connected to one end of the first hot-end heat exchanger 11. Figure 2 On the first refrigerant pipe 51 between the upper end shown and the throttling element 9, at the second end of the second refrigerant pipe 52 (shown at the upper end), Figure 2 The lower end shown is connected to the other end of the first hot-end heat exchanger 11. Figure 2 The first refrigerant pipe 51 is located between the lower end of the compressor 7 and the suction port of the compressor 7. The first fan 41 can act on the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 at the same time. In other words, when the first fan 41 is started, it can drive the outdoor ambient air to flow through the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 simultaneously or sequentially.

[0101] The first valve section 31 is a three-way control valve, and the first port of the three-way control valve ( Figure 2 Middle right interface), second interface ( Figure 2 (Middle and upper side interface) and third interface ( Figure 2The left-side interface is connected to one port of the four-way valve 8, one end of the first hot-end heat exchanger 11, and one end of the second outdoor heat exchange section 22. 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.

[0102] The second pump body 62 is disposed between one end of the second hot-end heat exchanger 12 and one end of the second water pipe 55 in the first water pipe 54. The indoor heat exchanger 23 has a first heat exchange flow path and a second heat exchange flow path that can exchange heat with each other. The first heat exchange flow path is disposed in the first refrigerant pipe 51 and at both ends ( Figure 2 The upper right and upper left ports are respectively connected to the exhaust port of compressor 7 and one end of throttling element 9. The second heat exchange flow path and the third pump body 63 are located in the third water pipe 56. One end of the third water pipe 56 is connected to one end of the second hot end heat exchanger 12. Figure 2 The upper end shown) and the circulation inlet of the first thermal storage device 24 ( Figure 2 The first water pipe 54 between the upper end shown) and the third water pipe 56 is connected at the other end of the second hot end heat exchanger 12. Figure 2 (as shown at the lower end) and the circulation outlet of the first thermal storage device 24 ( Figure 2 The first water pipe 54 is located between the lower end shown in the diagram. The first valve body 33 is located at the circulation inlet of the first heat storage device 24. Figure 2 The upper end shown) and one end of the third water pipe 56 ( Figure 2 The second valve body 34 is located on the first water pipe 54 between the upper end shown, the second valve body 34 is located on the second water pipe 55, and the third valve body 35 is located at one end of the second hot end heat exchanger 12. Figure 2 The upper end shown) and one end of the second water pipe 55 ( Figure 2 The fourth valve body 36 is located on the first water pipe 54 between the upper end shown in the figure and the third water pipe 56.

[0103] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, one end of the indoor heat exchanger 23, the confluence of the first hot-end heat exchanger 11 and the second outdoor heat exchange section 22, and the suction port of the compressor 7. More specifically, the four-way valve 8 is connected to the first port of the aforementioned first valve section 31 ( Figure 2 The right-side interface is connected.

[0104] The following is combined Figures 3 to 6 The operating principle of the tri-generation system in the second embodiment of this application will be introduced.

[0105] First refer to Figure 3When the outdoor temperature is extremely low and users have indoor heating, domestic hot water production, and heating needs, the system operates in the extremely low temperature high heat mode: at this time, thermoacoustic motor 1, compressor 7, first fan 41, second fan 42, first pump body 61, and third pump body 63 start running, second pump body 62 stops, throttling element 9 opens to a certain degree, and the first port of the first valve section 31 ( Figure 3 Right side interface) and second interface ( Figure 3 The upper interface is connected, the first valve body 33, the second valve body 34 and the fourth valve body 36 are open, and the third valve body 35 is closed. During the operation of the thermoacoustic machine 1, heat and cold are generated through the thermoacoustic effect. The first pump body 61 drives the first refrigerant to circulate between the cold end heat exchanger 13 and the first outdoor heat exchange section 21. When the first refrigerant passes through the cold end heat exchanger 13, it absorbs the cold energy in the cold end heat exchanger 13 and cools down. When the first refrigerant continues to flow through the first outdoor heat exchange section 21, it exchanges heat with the outdoor ambient air, absorbs the heat of the outdoor air and rises in temperature, and the corresponding outdoor air temperature decreases. On the other hand, the high temperature and high pressure gaseous refrigerant discharged by the compressor 7 first passes through the first heat exchange flow path of the indoor heat exchanger 23. The refrigerant exchanges heat with the air in the indoor environment and the water in the second heat exchange flow path in the first heat exchange flow path. Among them, the refrigerant that exchanges heat with the indoor ambient air absorbs the cold energy in the indoor air and cools down, and the corresponding indoor air flow temperature rises, thereby achieving indoor heating. The refrigerant, which exchanges heat with the water, transfers heat to the water, thus raising its temperature. The third pump 63 drives the water to circulate between the second heat exchange path, the first heat storage device 24, and the second heat storage device 25. Part of the water circulates to the first heat storage device 24 to produce domestic hot water. Part of the water circulates to the second heat storage device 25, where it dissipates heat to the outside, providing indoor heating. The refrigerant discharged from the first heat exchange path cools to a liquid state. This liquid refrigerant continues to flow through the throttling element 9, where it cools and depressurizes, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure refrigerant absorbs heat from the first hot-end heat exchanger 11, causing it to heat up and vaporize. The vaporized refrigerant returns to the compressor 7 to continue its heating and circulation. Of course, when there is no heating demand, the second fan 42 can be turned off; when there is no demand for domestic hot water, the first valve 33 can be closed; and when there is no demand for indoor heating, the second valve 34 can be closed.

[0106] Next, refer to Figure 4When the outdoor ambient temperature is low and users have heating, domestic hot water production, and heating needs, the system operates in low-temperature heating mode: At this time, thermoacoustic unit 1, first fan 41, second fan 42, first pump body 61, and second pump body 62 start operation; compressor 7 and third pump body 63 stop operation; and first valve body 33, second valve body 34, third valve body 35, and fourth valve body 36 are all open. During operation, thermoacoustic unit 1 generates heat and cooling through the thermoacoustic effect. First pump body 61 drives the first refrigerant to circulate between the cold-end heat exchanger 13 and the first outdoor heat exchange section 21. When the first refrigerant passes through the cold-end heat exchanger 13, it absorbs the cooling energy in the cold-end heat exchanger 13 and cools down. When the first refrigerant continues to flow through the first outdoor heat exchange section 21, it exchanges heat with the outdoor ambient air, absorbing heat from the outdoor air and warming up, correspondingly lowering the outdoor air temperature. The second pump body 62 drives water to circulate between the second heat exchange flow path, the second hot-end heat exchanger 12, the first heat storage device 24, and the second heat storage device 25. When the water passes through the second hot-end heat exchanger 12, it absorbs heat from the heat exchanger 12 and its temperature rises. When the water flows into the first heat storage device 24, it produces domestic hot water. When the water flows through the second heat storage device 25, it dissipates heat into the room to achieve indoor heating. When the water flows through the second heat exchange flow path, it exchanges heat with the indoor air, absorbs the cold air from the indoor air and its temperature drops, and the corresponding indoor air temperature rises, achieving indoor heating. Of course, when there is no need to produce domestic hot water, the first valve body 33 can be closed. When there is no need for indoor heating, the second fan 42 and the fourth valve body 36 can be closed. When there is no need for heating, the second valve body 34 can be closed.

[0107] Next, refer to Figure 5 When the outdoor ambient temperature is high and users have heating, domestic hot water production, and heat supply needs, the system operates in normal heating mode: at this time, compressor 7, first fan 41, second fan 42, and third pump 63 start running, thermoacoustic motor 1, first pump 61, and second pump 62 stop, throttling element 9 opens to a certain degree, and the first port of first valve 31 ( Figure 5 Right side interface) and third interface ( Figure 5(Left interface) Connected, the first valve body 33, the second valve body 34, and the fourth valve body 36 are open, and the third valve body 35 is closed. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 7 first passes through the first heat exchange path of the indoor heat exchanger 23. In the first heat exchange path, the refrigerant exchanges heat with indoor air and water in the second heat exchange path. The refrigerant exchanging heat with the indoor ambient air absorbs the coldness from the indoor air and cools down, correspondingly increasing the temperature of the indoor air flow, thus achieving indoor heating. The refrigerant exchanging heat with the water transfers heat to the water, thus increasing the water temperature. The third pump body 63 drives the water to circulate between the second heat exchange path, the first heat storage device 24, and the second heat storage device 25. When the water circulates into the first heat storage device 24, domestic hot water is produced. When the water flows through the second heat storage device 25, it dissipates heat to the outside, achieving indoor heating. The refrigerant discharged from the first heat exchange path is cooled to a liquid state. The liquid refrigerant continues to flow through the throttling element 9, where it is further cooled and depressurized, becoming a low-temperature, low-pressure gas-liquid mixture. This low-temperature, low-pressure refrigerant then exchanges heat with the outdoor air in the second outdoor heat exchange section 22, absorbing heat from the outdoor air and vaporizing. The vaporized refrigerant returns to the compressor 7 to continue the cycle. Of course, when there is no demand for domestic hot water, the first valve 33 can be closed. When there is no demand for indoor heating, the second valve 34 can be closed. When there is no demand for indoor heating, the second fan 42 and the fourth valve 36 can be closed.

[0108] Finally refer to Figure 6 When a user has a cooling need, the system operates in cooling mode: at this time, the four-way valve 8 reverses, the compressor 7, the first fan 41, and the second fan 42 start running, the thermoacoustic machine 1, the first pump body 61, the second pump body 62, and the third pump body 63 stop, the throttling element 9 opens to a certain degree, and the first port of the first valve section 31 ( Figure 6 Right side interface) and third interface ( Figure 6 (Left interface) Connected. The high-temperature, high-pressure gaseous refrigerant discharged from compressor 7 first passes through the second outdoor heat exchange section 22, where it exchanges heat with the outdoor ambient air, cooling down to form liquid refrigerant. The liquid refrigerant continues to flow through the throttling element 9, where it cools and depressurizes, becoming a low-temperature, low-pressure gas-liquid mixture. When this low-temperature, low-pressure refrigerant passes through the first heat exchange path of the indoor heat exchanger 23, it exchanges heat with the indoor air, absorbing heat and rising in temperature, thus lowering the indoor air temperature and achieving cooling. The refrigerant flowing out of the first heat exchange path vaporizes into a gaseous state and returns to compressor 7 to continue the cycle.

[0109] The above configuration, with the indoor heat exchanger 23 featuring a first and second heat exchange flow path and a third water pipe 56, enables heat exchange between the refrigerant and water. This allows the heat from the refrigerant to be used for water heating, or vice versa, improving the system's versatility. The first valve body 33 and the second valve body 34 allow for water flow direction control, facilitating the independent operation of the two heat storage devices. The third valve body 35 and the fourth valve body 36 prevent water energy loss and improve system operating efficiency. The second outdoor heat exchange section 22 and the second refrigerant pipe 52 allow for independent circulation between the compressor 7 and the indoor heat exchanger 23, expanding the system's applicable scenarios. The first valve section 31 allows for refrigerant flow direction control. Since the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 belong to the same heat exchanger, high integration and functional reuse of the heat exchanger are achieved, reducing system structural complexity and increasing system integration. By setting up a four-way valve 8, the operating modes of the system can be expanded, thus broadening the applicable scenarios of the system.

[0110] It should be noted that although the second embodiment described above is based on four specific operating modes, this is merely illustrative and not intended to limit the application scenarios of this application. Without departing from the principles of this application, those skilled in the art can combine the structure of this application to create more operating modes. For example, in an outdoor ultra-low temperature environment, the third valve body 35 and the second pump body 62 can be opened simultaneously to achieve simultaneous heating of the second hot-end heat exchanger 12 and the refrigerant.

[0111] The following is combined Figure 7 The third implementation method of the tri-generation system of this application will be briefly introduced.

[0112] like Figure 7 As shown, based on the second embodiment, the tri-generation system of this embodiment omits the third pump body 63, adds an intermediate heat exchanger 26, and adjusts the structure of the indoor heat exchanger 23. Specifically, the second pump body 62 is located in the first water pipe 54, and the intermediate heat exchanger 26 is a plate heat exchanger with a third heat exchange flow path and a fourth heat exchange flow path capable of exchanging heat with each other. The third heat exchange flow path is located in the first refrigerant pipe 51 and between the exhaust port of the compressor 7 and the throttling element 9, more specifically, between one interface of the four-way valve 8 and the indoor heat exchanger 23. The fourth heat exchange flow path is located in the third water pipe 56, one end of the third water pipe 56 ( Figure 7 The upper end shown is connected to one end of the second hot-end heat exchanger 12. Figure 7 The upper end shown) and the circulation inlet of the first thermal storage device 24 ( Figure 7 The first water pipe 54 between the upper end shown) and the third water pipe 56 is connected at the other end of the second hot end heat exchanger 12. Figure 7 The first water pipe 54 between the lower end of the pump body 62 and the second pump body 62 is shown. The indoor heat exchanger 23 is an air-cooled heat exchanger, with its two ends connected to one end of the third heat exchange flow path and one end of the throttling element 9, respectively. The second fan 42 is installed corresponding to the indoor heat exchanger 23. When the second fan 42 is started, it can drive indoor air to flow through the indoor heat exchanger 23.

[0113] Thus, by setting up an intermediate heat exchanger 26 with a third heat exchange flow path and a fourth heat exchange flow path, and by setting up a third water pipe 56 to connect the fourth heat exchange flow path with the first water pipe 54, the heat transfer between the refrigerant and the water can be achieved by means of the intermediate heat exchanger 26, thereby reducing the structural complexity of the indoor heat exchanger 23.

[0114] The following reference Figure 8 The fourth implementation method of the tri-generation system of this application will be briefly introduced.

[0115] like Figure 8 As shown, based on the second embodiment, the tri-generation system of this embodiment omits the third water pipe 56, the third valve body 35, the fourth valve body 36, and the third pump body 63, adds a bypass pipe 57 and a second valve section 32, and adjusts the location of the indoor heat exchanger 23. Specifically, the indoor heat exchanger 23 has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is located in the first refrigerant pipe 51 and its two ends are respectively connected to the exhaust port of the compressor 7 and one end of the throttling element 9. The second heat exchange flow path is located in the first water pipe 54 and is located at one end of the second hot-end heat exchanger 12. Figure 8 The upper end shown) and one end of the second water pipe 55 ( Figure 8 The second pump body 62 is disposed between the first water pipe 54 and the other end of the second hot end heat exchanger 12. Figure 8 The lower end shown) and the other end of the second water pipe 55 ( Figure 8 Between the lower end shown.

[0116] The two ends of the bypass pipe 57 are respectively connected to the two ends of the second hot-end heat exchanger 12. Specifically, one end of the bypass pipe 57 ( Figure 8 The upper end shown is connected to one end of the second hot-end heat exchanger 12. Figure 8 The upper end shown) and one end of the second heat exchange flow path ( Figure 8 On the first water pipe 54 between the left end shown, the other end of the bypass pipe 57 (shown on the left) Figure 8 The lower end shown is connected to the other end of the second hot-end heat exchanger 12. Figure 8 The first water pipe 54 between the lower end shown and the second pump body 62.

[0117] The second valve section 32 is configured to selectively control the flow of water through the bypass pipe 57 or the second hot-end heat exchanger 12. Specifically, the second valve section 32 in this embodiment includes two three-way control valves. The three ports of one three-way control valve are respectively connected to one end of the second hot-end heat exchanger 12, one end of the bypass pipe 57, and one end of the second heat exchange flow path. The three ports of the other three-way control valve are respectively connected to the other end of the second hot-end heat exchanger 12, the other end of the bypass pipe 57, and the second pump body 62. The two three-way control valves are configured to selectively control the flow of water through the bypass pipe 57 or the second hot-end heat exchanger 12. In other words, each three-way control valve can achieve individual connection between at least any two ports.

[0118] In this way, the heat from the refrigerant can be transferred or the heat from the thermoacoustic machine 1 can be absorbed through the indoor heat exchanger 23, realizing heat exchange between the refrigerant and water. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger 23, improving the system's applicability. Furthermore, during operation, the second valve 32 can be used to control the water flow direction, ensuring that the water flows through the bypass pipe 57 without passing through the second hot-end heat exchanger 12, thus avoiding heat loss caused by the water flowing through the second hot-end heat exchanger 12 and improving system operating efficiency. The specific working principle for each application scenario can be referred to in the second implementation method, and will not be repeated in this implementation method.

[0119] The following reference Figure 9 The fifth implementation of the tri-generation system of this application will be briefly described.

[0120] like Figure 9 As shown, based on the fourth embodiment, this embodiment adds an intermediate heat exchanger 26 to the tri-generation system and adjusts the structure of the indoor heat exchanger 23. Specifically, the intermediate heat exchanger 26 is a plate heat exchanger with a third and a fourth heat exchange flow path capable of exchanging heat with each other. The third heat exchange flow path is located in the first refrigerant pipeline 51 and its two ends are respectively connected to the exhaust port of the compressor 7 and one end of the throttling element 9, and more specifically, it is connected to one interface of the four-way valve 8 and one end of the indoor heat exchanger 23. The fourth heat exchange flow path is located in the first water pipeline 54 and is located between one interface of the second valve section 32 and one end of the second heat storage device 25. The indoor heat exchanger 23 is an air-cooled heat exchanger, and its two ends are respectively connected to one end of the third heat exchange flow path and one end of the throttling element 9. A second fan 42 is provided corresponding to the indoor heat exchanger 23. When the second fan 42 is started, it can drive indoor air to flow through the indoor heat exchanger 23.

[0121] Thus, by setting up an intermediate heat exchanger 26 with a third and a fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, improving the system's applicability. Furthermore, when transferring heat using the intermediate heat exchanger 26, the bypass pipe 57 and the second valve 32 can be used to control the water flow direction, allowing the water to bypass the second hot-end heat exchanger 12 and avoiding energy waste. The specific working principle can be found in the second embodiment, and will not be elaborated further in this embodiment.

[0122] The following is combined Figure 10 The sixth implementation of the tri-generation system of this application will be briefly introduced.

[0123] like Figure 10 As shown, based on the first embodiment, this embodiment omits the first valve body 33, the second valve body 34, and the second water pipe 55, and adjusts the connection method of the first heat storage device 24 and the second heat storage device 25. Specifically, the first heat storage device 24, the second heat storage device 25, and the second hot-end heat exchanger 12 are circulatedly connected through the first water pipe 54. Preferably, the first heat storage device 24 is located upstream of the second heat storage device 25, that is, the domestic water tank is located upstream of the radiator. In this case, when the second pump body 62 is started, the water flowing through the second hot-end heat exchanger 12 first enters the first heat storage device 24, and then flows through the second heat storage device 25.

[0124] Thus, when the thermoacoustic machine 1 is started, the second pump body 62 drives the water to exchange heat with the second hot end heat exchanger 12 first, and then the water enters the first heat storage device 24 to produce hot water, and then passes through the second heat storage device 25 to achieve heating.

[0125] The following is combined Figure 11 The seventh implementation of the tri-generation system of this application will be briefly introduced.

[0126] like Figure 11 As shown, based on the sixth embodiment, this embodiment of the tri-generation system adds a second outdoor heat exchange section 22, a second refrigerant pipeline 52, a third water pipeline 56, a four-way valve 8, a first valve section 31, a fourth valve body 36, a fifth valve body 37, a sixth valve body 38, and a third pump body 63. Additionally, the structure of the indoor heat exchanger 23 is adjusted. Specifically, the second outdoor heat exchange section 22 is an air-cooled heat exchanger, and the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 belong to the same heat exchanger. Their arrangement is not limited in this application; for example, they can be arranged side-by-side along the airflow direction, or side-by-side or top-and-bottom, etc., and their internal flow paths are independent and do not affect each other. The second outdoor heat exchange section 22 is located on the second refrigerant pipeline 52, and the first end of the second refrigerant pipeline 52 ( Figure 11The upper end shown is connected to one end of the first hot-end heat exchanger 11. Figure 11 On the first refrigerant pipe 51 between the upper end shown and the throttling element 9, at the second end of the second refrigerant pipe 52 (shown at the upper end), Figure 11 The lower end shown is connected to the other end of the first hot-end heat exchanger 11. Figure 11 The first refrigerant pipe 51 is located between the lower end of the compressor 7 and the suction port of the compressor 7. The first fan 41 can act on the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 at the same time. In other words, when the first fan 41 is started, it can drive the outdoor ambient air to flow through the first outdoor heat exchange section 21 and the second outdoor heat exchange section 22 simultaneously or sequentially.

[0127] The first valve section 31 is a three-way control valve, and the first port of the three-way control valve ( Figure 11 Middle right interface), second interface ( Figure 11 (Middle and upper side interface) and third interface ( Figure 11 The left-side interface is connected to one port of the four-way valve 8, one end of the first hot-end heat exchanger 11, and one end of the second outdoor heat exchange section 22. 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.

[0128] The second pump body 62 is disposed at one end of the second hot-end heat exchanger 12. Figure 11 The lower end shown) and the circulation inlet of the first thermal storage device 24 ( Figure 11 (As shown at the lower end), the indoor heat exchanger 23 has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is disposed at both ends of the first refrigerant pipe 51. Figure 11 The upper right and upper left ports are respectively connected to the exhaust port of compressor 7 and one end of throttling element 9. The second heat exchange flow path and the third pump body 63 are located in the third water pipe 56. One end of the third water pipe 56 is connected to the circulation inlet of the second pump body 62 and the first heat storage device 24. Figure 11 The first water pipe 54 between the lower end shown) and the third water pipe 56 is connected at the other end of the second hot end heat exchanger 12. Figure 11 The upper end shown) and the outlet of the second thermal storage device 25 ( Figure 11 On the first water pipe 54 between (shown at the upper end).

[0129] The fifth valve body 37 is located at one end of the second hot-end heat exchanger 12. Figure 11 The upper end shown) and one end of the third water pipe 56 ( Figure 11 The sixth valve body 38 is located on the first water pipe 54 between the upper end shown, the sixth valve body 38 is located on the third water pipe 56, and the seventh valve body 39 is located at the outlet of the second heat storage device 25. Figure 11 On the first water pipe 54 between the upper end shown and one end of the third water pipe 56.

[0130] The four ports of the four-way valve 8 are respectively connected to the exhaust port of the compressor 7, one end of the indoor heat exchanger 23, the confluence of the first hot-end heat exchanger 11 and the second outdoor heat exchange section 22, and the suction port of the compressor 7. More specifically, the four-way valve 8 is connected to the first port of the aforementioned first valve section 31 ( Figure 11 The right-side interface is connected.

[0131] Thus, by setting up a first heat exchange flow path and a second heat exchange flow path in the indoor heat exchanger 23, and by setting up a third water pipe 56, heat exchange between the refrigerant and water can be realized. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger 23, improving the system's applicability. Furthermore, during operation, by controlling the opening and closing of the fifth valve body 37, the sixth valve body 38, and the seventh valve body 39, the water flow direction can be controlled, avoiding water energy loss and improving system operating efficiency. For the specific operating principle of this embodiment, please refer to the second embodiment; it will not be repeated here.

[0132] The following is combined Figure 12 The eighth implementation of the tri-generation system of this application will be briefly introduced.

[0133] like Figure 12 As shown, based on the seventh embodiment, this embodiment of the tri-generation system omits the third pump body 63 and the seventh valve body 39, adds an intermediate heat exchanger 26, and adjusts the structure of the indoor heat exchanger 23. Specifically, the second pump body 62 is located in the first water pipe 54, and the intermediate heat exchanger 26 is a plate heat exchanger with a third heat exchange flow path and a fourth heat exchange flow path capable of exchanging heat with each other. The third heat exchange flow path is located in the first refrigerant pipe 51 and is situated between the exhaust port of the compressor 7 and the throttling element 9, more specifically, between one interface of the four-way valve 8 and the indoor heat exchanger 23. The fourth heat exchange flow path is located in the third water pipe 56, one end of the third water pipe 56 ( Figure 12 The upper end shown is connected to one end of the second hot-end heat exchanger 12. Figure 12 The upper end shown) and the outlet of the second thermal storage device 25 ( Figure 12 The first water pipe 54 between the upper end shown) and the third water pipe 56 is connected at the other end of the second hot end heat exchanger 12. Figure 12 The first water pipe 54 between the lower end of the pump body 62 and the second pump body 62 is shown. The indoor heat exchanger 23 is an air-cooled heat exchanger, with its two ends connected to one end of the third heat exchange flow path and one end of the throttling element 9, respectively. The second fan 42 is installed corresponding to the indoor heat exchanger 23. When the second fan 42 is started, it can drive indoor air to flow through the indoor heat exchanger 23.

[0134] Thus, by setting up an intermediate heat exchanger 26 and a third water pipe 56, and with the intermediate heat exchanger 26 having a third heat exchange flow path and a fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, improving the system's applicability. The specific working principle of the tri-generation system in this embodiment can be referred to the above embodiment, and will not be repeated here.

[0135] The following is combined Figure 13 The ninth implementation of the tri-generation system of this application will be briefly introduced.

[0136] like Figure 13 As shown, based on the seventh embodiment, this embodiment of the tri-generation system omits the third water pipe 56, the fifth valve body 37, the sixth valve body 38, the seventh valve body 39, and the third pump body 63, adds a bypass pipe 57 and a second valve section 32, and adjusts the location of the indoor heat exchanger 23. Specifically, the indoor heat exchanger 23 has a first heat exchange flow path and a second heat exchange flow path capable of exchanging heat with each other. The first heat exchange flow path is located in the first refrigerant pipe 51 and its two ends are respectively connected to the exhaust port of the compressor 7 and one end of the throttling element 9. The second heat exchange flow path is located in the first water pipe 54 and is located at one end of the second hot-end heat exchanger 12. Figure 13 The upper end shown) and the outlet of the second thermal storage device 25 ( Figure 13 The second pump body 62 is disposed between the first water pipe 54 and the other end of the second hot end heat exchanger 12. Figure 13 The lower end shown) and the circulation inlet of the first thermal storage device 24 ( Figure 13 Between the lower end shown.

[0137] The two ends of the bypass pipe 57 are respectively connected to the two ends of the second hot-end heat exchanger 12. Specifically, one end of the bypass pipe 57 ( Figure 13 The upper end shown is connected to one end of the second hot-end heat exchanger 12. Figure 13 The upper end shown) and one end of the second heat exchange flow path ( Figure 13 On the first water pipe 54 between the left end shown, the other end of the bypass pipe 57 (shown on the left) Figure 13 The lower end shown is connected to the other end of the second hot-end heat exchanger 12. Figure 13 The first water pipe 54 between the lower end shown and the second pump body 62.

[0138] The second valve section 32 is configured to selectively control the flow of water through the bypass pipe 57 or the second hot-end heat exchanger 12. Specifically, the second valve section 32 in this embodiment includes two three-way control valves. The three ports of one three-way control valve are respectively connected to one end of the second hot-end heat exchanger 12, one end of the bypass pipe 57, and one end of the second heat exchange flow path. The three ports of the other three-way control valve are respectively connected to the other end of the second hot-end heat exchanger 12, the other end of the bypass pipe 57, and the second pump body 62. The two three-way control valves are configured to selectively control the flow of water through the bypass pipe 57 or the second hot-end heat exchanger 12. In other words, each three-way control valve can achieve individual connection between at least any two ports.

[0139] Thus, by setting up a first heat exchange flow path and a second heat exchange flow path in the indoor heat exchanger 23, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used in the indoor heat exchanger 23, improving the system's applicability. Furthermore, during operation, the water flow direction can be controlled via the bypass pipe 57, thereby preventing heat loss caused by water flowing through the second hot-end heat exchanger 12 and improving system operating efficiency. The specific operating principle of this embodiment can be found in the above-described embodiments, and will not be repeated here.

[0140] The following is combined Figure 14 The tenth implementation of the combined cooling, heating, and power (CCHP) system of this application will be briefly introduced.

[0141] Based on the ninth embodiment, this embodiment adds an intermediate heat exchanger 26 to the tri-generation system and adjusts the structure of the indoor heat exchanger 23. Specifically, the intermediate heat exchanger 26 is a plate heat exchanger with a third and a fourth heat exchange flow path capable of exchanging heat with each other. The third heat exchange flow path is located in the first refrigerant pipeline 51 and its two ends are respectively connected to the exhaust port of the compressor 7 and one end of the throttling element 9, and more specifically, it is connected to one interface of the four-way valve 8 and one end of the indoor heat exchanger 23. The fourth heat exchange flow path is located in the first water pipeline 54 and is located between one interface of the second valve section 32 and one end of the second heat storage device 25. The indoor heat exchanger 23 is an air-cooled heat exchanger, with its two ends connected to one end of the third heat exchange flow path and one end of the throttling element 9. A second fan 42 is provided corresponding to the indoor heat exchanger 23. When the second fan 42 is started, it can drive indoor air to flow through the indoor heat exchanger 23.

[0142] Thus, by setting up an intermediate heat exchanger 26 with a third and a fourth heat exchange flow path, heat exchange between the refrigerant and water can be achieved. This allows the heat from the refrigerant to be used for water heating, or the heat from the water to be used for refrigerant circulation, improving the system's applicability. Furthermore, when transferring heat using the intermediate heat exchanger 26, the bypass pipe 57 and the second valve 32 can be used to control the water flow direction, allowing the water to bypass the second hot-end heat exchanger 12 and avoiding energy waste. The specific working principle can be found in the aforementioned implementation method, and will not be repeated here.

[0143] The following is combined Figure 15 and Figure 16 The eleventh implementation of the combined cooling, heating, and power (CCHP) system of this application will be briefly introduced.

[0144] like Figure 15 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 15. Each thermoacoustic unit includes a compression section 16 and a heat exchange section. The compression section 16 is a linear compressor, which includes electromagnetic components, a power piston, a spring, an exhaust fan, etc. The heat exchange section includes a first hot-end heat exchanger 11, a second hot-end heat exchanger 12, a regenerator 14, and a cold-end heat exchanger 13. An expansion chamber and a compression chamber are formed within the housing 15. The cold-end heat exchanger 13 is located in the expansion chamber, the two hot-end heat exchangers are located in the compression chamber, and the regenerator 14 is located between the cold-end heat exchanger 13 and the two hot-end heat exchangers. Further, as... Figure 16 As shown, in this application, two cold-end heat exchangers 13 are positioned opposite each other (i.e., the two cold-end heat exchangers 13 are close to each other and facing each other), and a partition 17 is provided between the two cold-end heat exchangers 13 to separate the two thermoacoustic units. The first hot-end heat exchanger 11 and the second hot-end heat exchanger 12 are nested within each other in the compression chamber, wherein the first hot-end heat exchanger 11 is located inside the second hot-end heat exchanger 12. (Return to Reference) Figure 15 The first outdoor heat exchange section 21 exchanges heat with the two cold-end heat exchangers 13 through a first refrigerant. The suction port of the compressor 7 is connected to the first end of at least one first hot-end heat exchanger 11, and one end of the throttling element 9 is connected to the second end of at least one first hot-end heat exchanger 11. The first heat storage device 24 and the second heat storage device 25 are both connected to the two second hot-end heat exchangers 12. Specifically, the inlet of the first outdoor heat exchange section 21 ( Figure 15 The upper port shown is simultaneously connected to one end of both cold-end heat exchangers 13. Figure 15 The upper end shown is connected to the outlet of the first outdoor heat exchange section 21. Figure 15 The lower port shown is simultaneously connected to the other end of the two cold-end heat exchangers 13. Figure 15The two cold-end heat exchangers 13 are connected to the lower end of the compressor 7, forming a parallel structure similar to that in electrical circuits. The suction port of the compressor 7 is simultaneously connected to the first end of the two first hot-end heat exchangers 11. Figure 15 The lower end shown is connected, and one end of the throttling element 9 is simultaneously connected to the second end of the two first hot-end heat exchangers 11. Figure 15 The two first hot-end heat exchangers 11 are connected to the upper end of the two second hot-end heat exchangers 12, forming a structure similar to a "parallel" connection in electrical circuitry. The outlet of the second pump body 62 is simultaneously connected to the first end of each of the two second hot-end heat exchangers 12. Figure 15 The lower end shown is connected to the circulation inlet of the first thermal storage device 24 and the return outlet of the second thermal storage device 25. Figure 15 The upper end shown) is simultaneously connected to the second end of the two second hot end heat exchangers 12 ( Figure 15 The upper end is connected, and at this time the two second hot end heat exchangers 12 form a structure similar to the "parallel" structure in electricity.

[0145] 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 15 and separating the heat exchange sections by a partition 17 simplifies the manufacturing process, eliminating the need for specific design of the interior of housing 15. The working principle of the above embodiment can be referred to the first embodiment, and will not be repeated here.

[0146] 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.

[0147] For example, in an alternative embodiment, although the above embodiment is described with the first outdoor heat exchange unit 21 and the second outdoor heat exchange unit 22 both being air-cooled heat exchangers, the specific form of the heat exchangers is not unique, and those skilled in the art can adjust them. For example, at least one of the heat exchangers can also be replaced with a liquid-cooled heat exchanger, which has a liquid-cooled inlet and a liquid-cooled outlet, and is configured to circulate with a liquid-cooling source through the liquid-cooled inlet and outlet. For example, the liquid-cooled heat exchanger can exchange heat with groundwater or cooling water in a cold water tank. Moreover, when all the heat exchangers are liquid-cooled heat exchangers, the corresponding fan can be omitted.

[0148] For example, in another alternative embodiment, the arrangement of the first outdoor heat exchange unit 21 and the second outdoor heat exchange unit 22 belonging to the same heat exchanger in the above-mentioned partial embodiments is only a preferred option. In other embodiments, those skilled in the art can also separate and set them independently, for example, setting two outdoor heat exchangers, each of which operates independently and is equipped with a fan or water-cooling components, etc. This replacement of the arrangement does not deviate from the principle of this application.

[0149] For example, in another alternative embodiment, although the above embodiments are all described in conjunction with the indoor heat exchanger 23 being an air-cooled heat exchanger, the specific form of the indoor heat exchanger 23 is not unique, and those skilled in the art can adjust it, as long as the adjusted indoor heat exchanger 23 can achieve indoor cooling and heating.

[0150] For example, in another alternative embodiment, the configuration of the first heat storage device 24 and the second heat storage device 25 is not unique, and those skilled in the art can adjust them. For instance, the domestic water tank can be replaced by a water heater with a circulation inlet and a circulation outlet, which are directly or indirectly connected to the second hot-end heat exchanger 12. Furthermore, in addition to radiators, the heating terminals can be replaced by underfloor heating coils. Alternatively, the second heat storage device 25 can be replaced by a heating water tank, with heating achieved through the circulation of water in the heating water tank between the heating terminals. Furthermore, the specific configurations of the first heat storage device 24 and the second heat storage device 25 can be interchanged, meaning the first heat storage device 24 is used for heating, and the second heat storage device 25 is used for domestic water use.

[0151] For example, in another alternative embodiment, the arrangement of the first outdoor heat exchange unit 21 being circulatedly connected to the cold-end heat exchanger 13 via the first refrigerant pipe 53 is merely exemplary. Those skilled in the art can adjust it to suit more specific application scenarios. For instance, the first outdoor heat exchange unit 21 may be a heat pipe heat exchanger, with its evaporator end exchanging heat with the outdoor environment, such as through a fan. The condenser end of the heat pipe heat exchanger exchanges heat with the cold-end heat exchanger 13, such as by contacting the condenser end with the cold-end heat exchanger 13. A first refrigerant is filled inside the heat pipe heat exchanger; the first refrigerant can be water, alcohol, ammonia solution, etc. By using a heat pipe heat exchanger in the first outdoor heat exchange unit 21, the heat exchange effect can be improved, and the first pump body 61 can be omitted, reducing system setup costs.

[0152] Alternatively, a loop heat pipe can be formed between the first outdoor heat exchange section 21 and the cold-end heat exchanger 13 via a pipeline, with the first refrigerant filling the loop heat pipe. In this case, the condenser of the loop heat pipe is the cold-end heat exchanger 13. The gaseous first refrigerant exchanges heat with the cold air in the condenser and cools down to liquefy. A capillary structure needs to be installed inside the loop heat pipe to provide a pressure drop. The evaporator of the loop heat pipe is the first outdoor heat exchange section 21, where the liquid first refrigerant exchanges heat with the outdoor air and heats up to vaporize. The first refrigerant, which can be an ammonia solution, Freon, water, etc., can be filled in the loop heat pipe. The loop heat pipe formed between the first outdoor heat exchange section 21 and the cold-end heat exchanger 13 is easy to install, eliminates the need for the first pump body 61, and is suitable for long-distance refrigerant transmission.

[0153] For example, in another alternative embodiment, the first valve 31 in the above-described partial embodiment is introduced as an example of changing the flow direction of refrigerant or water in conjunction with a three-way control valve. However, this setting is only exemplary. In other embodiments, the three-way control valve can be replaced with two on / off valves (such as solenoid valves), which can also achieve the adjustment of the flow direction.

[0154] For example, in another alternative embodiment, although the above embodiments are described with the example of a first refrigerant having a freezing point of less than or equal to -40°C, the specific selection of the first refrigerant is not fixed, and those skilled in the art can make the selection based on the specific application scenario. For example, in areas with high outdoor ambient temperatures, water can also be selected as the first refrigerant, or other refrigerants with a freezing point of less than or equal to 0°C can be used.

[0155] For example, in another alternative embodiment, although the intermediate heat exchanger 26 in the above-described partial embodiment is introduced in conjunction with a plate heat exchanger, its specific implementation is not limited to this. In other embodiments, the intermediate heat exchanger 26 can also be a shell-and-tube heat exchanger or a coaxial heat exchanger, etc.

[0156] For example, in another alternative embodiment, although some of the above embodiments are described with the example of having a four-way valve 8, this is only a preferred embodiment. With the four-way valve 8 provided, simple switching between different modes can be achieved. Of course, those skilled in the art can omit the four-way valve 8.

[0157] For example, in another alternative embodiment, although the above-described embodiments are described with reference to having a bypass pipe 57 and a second valve section 32 as examples, the provision of the bypass pipe 57 is not mandatory in this embodiment. Those skilled in the art can choose whether to provide the bypass pipe 57 based on the specific application scenario. For example, in other embodiments, the bypass pipe 57 can be omitted. Furthermore, the second valve section 32 is described with reference to two three-way control valves as examples, but this is not intended to limit the scope of protection of this application. Those skilled in the art can adjust the specific arrangement of the valve section, such as adjusting it to an on / off valve group or providing only one three-way control valve, etc.

[0158] For example, in another alternative embodiment, although the above-described embodiments are based on the example of a first valve body 33, a second valve body 34, a third valve body 35, and a fourth valve body 36, the specific implementation of the valve bodies is not unique. Those skilled in the art can adjust them, as long as the adjusted technical solution can achieve control of the water flow direction. For instance, some valve body combinations can be replaced by three-way valves, and the first valve body 33, the second valve body 34, the third valve body 35, and the fourth valve body 36 can be selectively omitted. Similarly, the fifth valve body 37, the sixth valve body 38, and the seventh valve body 39 can also be omitted or replaced by other valve bodies.

[0159] For example, in another alternative embodiment, although the eleventh embodiment described above is based on the example of two thermoacoustic units being arranged in the same housing 15, this is only a preferred embodiment. In other embodiments, two separate thermoacoustic units 1 can also be arranged opposite each other.

[0160] For example, in another alternative embodiment, although the heat exchange sections of the two thermoacoustic units in the eleventh embodiment are separated by a partition 17, 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 13 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.

[0161] For example, in another alternative implementation, although the eleventh implementation described above is based on the example of two cold-end heat exchangers 13 facing each other, this is only one possible implementation. The specific arrangement depends on the specific form of the heat exchange section. For example, when the hot end of the heat exchange section is located at the outermost edge of the thermoacoustic unit, the two hot ends can also be arranged to face each other.

[0162] For example, in another alternative embodiment, the specific form of the compression unit 16 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.

[0163] For example, in another alternative embodiment, although the above eleventh embodiment is described as an example of two cold-end heat exchangers 13, two first hot-end heat exchangers 11, and two second hot-end heat exchangers 12 all being set in a "parallel" manner, 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 13, the two first hot-end heat exchangers 11, or the two second hot-end heat exchangers 12 can also be changed so that this application can be applied to more specific application scenarios. For example, the two cold-end heat exchangers 13, the two first hot-end heat exchangers 11, and the two second hot-end heat exchangers 12 are connected in series. That is, the first refrigerant passes through the two cold-end heat exchangers 13 before exchanging heat with the first outdoor heat exchange section 21. The refrigerant after the throttling element 9 passes through the two first hot-end heat exchangers 11 before returning to the compressor 7. The water passes through the two second hot-end heat exchangers 12 before entering the first heat storage device 24 and / or the second heat storage device 25.

[0164] For example, in another alternative embodiment, although the above embodiments are described in conjunction with a residential tri-generation 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 tri-generation system of this application is also applicable to application scenarios such as commercial tri-generation systems.

[0165] 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 opposed thermoacoustic machine 1 in the eleventh implementation method can also be applied to any implementation method other than the first implementation method.

[0166] 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.

[0167] 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 combined cooling, heating, and power (CCHP) system, characterized in that, include: A thermoacoustic machine, comprising a cold-end heat exchanger, a first hot-end heat exchanger, and a second hot-end heat exchanger. The first outdoor heat exchange section exchanges heat with the cold end heat exchanger through a first refrigerant. The compressor is connected to the first hot-end heat exchanger via a first refrigerant pipeline. A throttling element is disposed in the first refrigerant pipeline and located between the exhaust port of the compressor and one end of the first hot end heat exchanger; An indoor heat exchanger is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element; A first thermal storage device and a second thermal storage device, both of which are filled with water and are connected to a second hot-end heat exchanger, wherein one of the first thermal storage device and the other is used for domestic hot water and the other for heating.

2. The combined cooling, heating, and power (CCHP) system according to claim 1, characterized in that, The first outdoor heat exchange section is circulatedly connected to the cold-end heat exchanger via a first refrigerant pipeline. The combined cooling, heating, and power system also includes a first pump body, which is disposed in the first refrigerant pipeline, and a first refrigerant is filled in the first refrigerant pipeline; or The first outdoor heat exchange section is a heat pipe heat exchanger, wherein the condensing end of the heat pipe heat exchanger exchanges heat with the cold end heat exchanger, and a first refrigerant is filled in the heat pipe heat exchanger; or The first outdoor heat exchange section and the cold end heat exchanger are connected by a pipeline to form a loop heat pipe, and the first refrigerant is filled in the loop heat pipe.

3. The combined cooling, heating, and power (CCHP) system according to claim 1, characterized in that, The tri-generation system also includes a second outdoor heat exchange unit and a second refrigerant pipeline. The second outdoor heat exchange unit is disposed on the second refrigerant pipeline. The first end of the second refrigerant pipeline is connected to the first refrigerant pipeline between one end of the first hot end heat exchanger and the throttling element. The second end of the second refrigerant pipeline is connected to the refrigerant pipeline between the other end of the first hot end heat exchanger and the suction port of the compressor. The tri-generation system also includes a first valve section, which is configured to selectively control the flow of refrigerant through the first hot-end heat exchanger or the second outdoor heat exchange section.

4. The combined cooling, heating, and power (CCHP) system according to claim 3, characterized in that, At least one of the first outdoor heat exchange section and the second outdoor heat exchange section is an air-cooled heat exchanger, and the tri-generation system further includes a first fan, which is provided corresponding to the first outdoor heat exchange section and the second outdoor heat exchange section; and / or The first outdoor heat exchange section and the second outdoor heat exchange section are independent of each other or belong to different parts of the same heat exchanger.

5. The combined cooling, heating, and power (CCHP) system according to claim 3, characterized in that, The tri-generation system also includes a four-way valve, whose four ports are respectively connected to the compressor's exhaust port, one end of the indoor heat exchanger, the confluence of the first hot-end heat exchanger and the second outdoor heat exchanger, and the compressor's intake port.

6. The combined cooling, heating, and power (CCHP) system according to claim 1, characterized in that, The thermoacoustic machine includes two thermoacoustic units facing each other. Each thermoacoustic unit includes a compression section and a heat exchange section. Each heat exchange section includes a first hot-end heat exchanger, a second hot-end heat exchanger, a regenerator, and a cold-end heat exchanger. The first outdoor heat exchange section exchanges heat with the two cold-end heat exchangers through a first refrigerant. The suction port of the compressor is connected to the first end of at least one of the first hot-end heat exchangers. One end of the throttling element is connected to the second end of at least one of the first hot-end heat exchangers. The first heat storage device and the second heat storage device are both connected to the two second hot-end heat exchangers.

7. The combined cooling, heating, and power (CCHP) system according to claim 6, characterized in that, The two thermoacoustic units are disposed within the same housing, and the two heat exchange sections are either interconnected or separated by a partition; and / or The two cold-end heat exchangers are positioned opposite each other.

8. The tri-generation system according to any one of claims 1 to 7, characterized in that, The first heat storage device is circulated with the second hot-end heat exchanger through a first water pipeline. The second heat storage device is disposed on the second water pipeline. One end of the second water pipeline is connected to the first water pipeline between one end of the second hot-end heat exchanger and one port of the first heat storage device. The other end of the second water pipeline is connected to the first water pipeline between the other end of the second hot-end heat exchanger and the other port of the first heat storage device.

9. The combined cooling, heating, and power (CCHP) system according to claim 8, characterized in that, The indoor heat exchanger has a first heat exchange path and a second heat exchange path capable of exchanging heat with each other. The first heat exchange path is located in the first refrigerant pipeline, and the second heat exchange path is located in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is located in the first water pipeline; or The combined cooling, heating, and power system further includes an intermediate heat exchanger, which has a third heat exchange flow path and a fourth heat exchange flow path that can exchange heat with each other. The third heat exchange flow path is disposed in the first refrigerant pipeline and located between the compressor's exhaust port and the throttling element. The fourth heat exchange flow path is disposed in the first water pipeline. The combined cooling, heating, and power system further includes a second pump body, which is disposed in the first water pipeline.

10. The combined cooling, heating, and power (CCHP) system according to claim 9, characterized in that, The combined cooling, heating, and power (CCHP) system also includes a bypass pipeline, the two ends of which are respectively connected to the two ends of the second hot-end heat exchanger. The CCHP system also includes a second valve section, configured to selectively control water flow through the bypass pipeline or the second hot-end heat exchanger; and / or The combined cooling, heating, and power system further includes a first valve body and a second valve body. The first valve body is disposed on the first water pipeline between one end of the first heat storage device and one end of the second water pipeline, and the second valve body is disposed on the second water pipeline.

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