Trigeneration air conditioning system

Abstract

This application relates to the field of air conditioning system technology and discloses a three-phase air conditioning system, comprising: a compressor, including an air intake and an air exhaust; a first heat exchanger, including a first refrigerant channel and a first water channel for mutual heat exchange; a second heat exchanger, including a second refrigerant channel and a second water channel for mutual heat exchange; a third heat exchanger, including a third refrigerant channel and an air channel for mutual heat exchange; a hot water supply unit, including a first water circulation loop connected to the first water channel for supplying domestic hot water; and a cooling and heating unit, including a second water circulation loop connected to the second water channel for regulating indoor temperature; wherein, the compressor exhaust, the first refrigerant channel, the second refrigerant channel, the third refrigerant channel, and the air intake are connected in series to form the first refrigerant circulation loop, or the compressor exhaust, the first refrigerant channel, the third refrigerant channel, the second refrigerant channel, and the air intake are connected in series to form the second refrigerant circulation loop.

Description

Technical Field

[0001] This application relates to the field of air conditioning system technology, such as a tri-generation air conditioning system. Background Technology

[0002] With the improvement of living standards, people's demand for air conditioning (cooling and heating) and domestic hot water is constantly increasing, which has promoted the development of tri-generation air conditioning systems. Related technology discloses a tri-generation air conditioning system, including a heat pump unit, a hot water side, and an air conditioning side. When performing air conditioning cooling, air conditioning cooling and hot water production, underfloor heating, underfloor heating and hot water production, and hot water production, corresponding controls are applied to the cooling expansion valve, heating expansion valve, water flow switch, enthalpy injection solenoid valve, air conditioning circulating water pump, air conditioning cooling solenoid valve, hot water circulating water pump, heat recovery expansion valve, and underfloor heating solenoid valve.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] The complexity of tri-generation air conditioning systems leads to higher costs.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a tri-generation air conditioning system that solves the problem of high cost due to system complexity.

[0008] In some embodiments, the tri-generation air conditioning system includes:

[0009] The compressor includes an intake port and an exhaust port;

[0010] The first heat exchanger includes a first fluorine channel and a first water channel that exchange heat with each other;

[0011] The second heat exchanger includes a second fluorine channel and a second water channel that exchange heat with each other.

[0012] The third heat exchanger includes a third fluorine passage and an air passage that exchange heat with each other;

[0013] A hot water supply unit includes a first water circulation loop connected to a first water channel for supplying domestic hot water;

[0014] The heating and cooling unit includes a second water circulation loop connected to the second water channel for regulating indoor temperature;

[0015] The compressor's exhaust port, first refrigerant passage, second refrigerant passage, third refrigerant passage, and suction port are connected in series to form the first refrigerant circulation loop; or, the compressor's exhaust port, first refrigerant passage, third refrigerant passage, second refrigerant passage, and suction port are connected in series to form the second refrigerant circulation loop.

[0016] The tri-generation air conditioning system provided in this embodiment can achieve the following technical effects:

[0017] A tri-generation air conditioning system employs three heat exchangers. The first and second heat exchangers can be referred to as water-fluorine dual-medium heat exchangers, and the third heat exchanger as gas-fluorine dual-medium heat exchanger. The first refrigerant circulation channel can be formed by connecting the first, second, and third refrigerant channels in series, or the second refrigerant circulation channel can be formed by connecting the first, third, and second refrigerant channels. Furthermore, the first water channel exchanges heat with the first refrigerant channel, thereby regulating the water temperature in the first water circulation loop and supplying hot water to users. The second water channel exchanges heat with the second refrigerant channel, thereby regulating the water temperature in the second water circulation loop and thus regulating the indoor temperature. In this way, the tri-generation air conditioning system has a simple and ingenious structure, capable of providing cooling, heating, and hot water services.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a tri-generation air conditioning system with a first refrigerant circulation loop provided in an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of the refrigerant flow direction in the cooling and hot water modes provided in the embodiments of this disclosure;

[0022] Figure 3 This is a schematic diagram of the refrigerant flow direction in heating and hot water modes provided in the embodiments of this disclosure;

[0023] Figure 4 This is a schematic diagram of the refrigerant flow direction in the hot water mode provided in this embodiment of the disclosure;

[0024] Figure 5This is a schematic diagram of the refrigerant flow direction under the heating mode provided in the embodiments of this disclosure;

[0025] Figure 6 This is a schematic diagram of the refrigerant flow direction under the cooling mode provided in the embodiments of this disclosure;

[0026] Figure 7 This is a schematic diagram of the structure of a tri-generation air conditioning system with a second refrigerant circulation loop provided in an embodiment of this disclosure;

[0027] Figure 8 This is a schematic diagram of the refrigerant flow direction in the cooling and hot water modes provided in the embodiments of this disclosure;

[0028] Figure 9 This is a schematic diagram of the refrigerant flow direction in heating and hot water modes provided in the embodiments of this disclosure;

[0029] Figure 10 This is a schematic diagram of the refrigerant flow direction in the hot water mode provided in this embodiment of the disclosure;

[0030] Figure 11 This is a schematic diagram of the refrigerant flow direction under the heating mode provided in the embodiments of this disclosure;

[0031] Figure 12 This is a schematic diagram of the refrigerant flow direction under the cooling mode provided in the embodiments of this disclosure;

[0032] Figure 13 This is a schematic diagram of the refrigerant flow direction in the defrosting mode provided in the embodiments of this disclosure.

[0033] Figure label:

[0034] 1. Compressor; 11. Discharge port; 12. Inlet port; 13. First throttling device; 14. Second throttling device; 15. First shut-off valve; 16. Second shut-off valve; 17. Third shut-off valve;

[0035] 2. Four-way directional valve; 21. First multi-way valve; 211. First branch; 22. Second multi-way valve; 221. Second branch; 23. Third multi-way valve; 231. Third branch; 24. Fourth multi-way valve; 241. Fourth branch;

[0036] 3. First heat exchanger; 31. First refrigerant channel; 32. First water channel; 33. First water tank; 331. First water circulation loop; 332. Inlet pipe; 333. Outlet pipe; 334. Mixing branch; 34. First water pump;

[0037] 4. Second heat exchanger; 41. Second refrigerant channel; 42. Second water channel; 43. Fan coil unit; 44. Underfloor heating coil unit; 45. Second water tank; 451. Second water circulation loop; 46. Second water pump;

[0038] 5. Third heat exchanger; 51. Third fluorine channel. Detailed Implementation

[0039] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0040] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0041] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0042] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0043] Unless otherwise stated, the term "multiple" means two or more.

[0044] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0045] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0047] This disclosure provides a tri-generation air conditioning system, comprising a compressor 1, a first heat exchanger 3, a second heat exchanger 4, a third heat exchanger 5, a hot water supply unit, and a cooling / heating unit. The compressor 1 includes an intake port 12 and an exhaust port 11. The first heat exchanger 3 includes a first refrigerant channel 31 and a first water channel 32 for mutual heat exchange. The second heat exchanger 4 includes a second refrigerant channel 41 and a second water channel 42 for mutual heat exchange. The third heat exchanger 5 includes a third refrigerant channel 51 for mutual heat exchange and an air channel. A fan is provided on one side of the third heat exchanger 5, and the airflow from the fan blows through the third refrigerant channel 51 to form an air channel. The hot water supply unit includes a first water circulation loop 331 connected to the first water channel 32, used to supply domestic hot water. The cooling / heating unit includes a second water circulation loop 451 connected to the second water channel 42, used to regulate indoor temperature. In this circuit, the compressor 1's exhaust port 11, first refrigerant passage 31, second refrigerant passage 41, third refrigerant passage 51, and suction port 12 are connected in series to form the first refrigerant circulation loop, such as... Figure 1 As shown. Alternatively, the exhaust port 11, the first refrigerant channel 31, the third refrigerant channel 51, the second refrigerant channel 41, and the intake port 12 are connected in series to form a second refrigerant circulation loop, as shown. Figure 7 As shown.

[0048] In this embodiment, the tri-generation air conditioning system employs three heat exchangers. The first heat exchanger 3 and the second heat exchanger 4 can be referred to as water-fluorine dual-medium heat exchangers, and the third heat exchanger 5 can be referred to as gas-fluorine dual-medium heat exchanger. The first refrigerant circulation channel can be formed by connecting the first fluorine channel 31, the second fluorine channel 41, and the third fluorine channel 51 in series, or the second refrigerant circulation channel can be formed by connecting the first fluorine channel 31, the third fluorine channel 51, and the second fluorine channel 41. Furthermore, the first water channel 32 can exchange heat with the first fluorine channel 31, thereby regulating the water temperature of the first water circulation loop 331 and supplying hot water to the user. The second water channel 42 can exchange heat with the second fluorine channel 41, thereby regulating the water temperature of the second water circulation loop 451 and thus regulating the indoor temperature. Thus, the tri-generation air conditioning system has a simple and ingenious structure, capable of providing cooling, heating, and hot water.

[0049] Optionally, such as Figure 1As shown, the hot water supply unit also includes a first water tank 33, and a first water circulation loop 331 is used to regulate the temperature of the first water tank 33. The first water inlet of the first water tank 33 is connected to the first end of the first water channel 32 via a first water path, and the second water inlet of the first water tank 33 is connected to the second end of the first water channel 32 via a second water path. In this case, the first water path and the second water path form the first water circulation loop 331, and the water in the first water tank 33 can flow directly along the first water circulation loop 331. When the water flows through the first water channel 32, it can exchange heat with the first refrigerant channel 31. Optionally, the first water tank 33 has an internal water path. The first end of the internal water path passes through the first water inlet and is connected to the first water path, and the second end of the internal water path passes through the second water inlet and is connected to the second water path. In this case, the first water path, the second water path, and the internal water path form the first water circulation loop 331. The water in the first water tank 33 does not enter the first water circulation loop 331; instead, the internal water path heats the water in the first water tank 33. Optionally, the water supply unit also includes a first water pump 34, and the first water circulation loop 331 is circulated when the first water pump 34 is started.

[0050] Optionally, the third outlet of the first water tank 33 is connected to the water-using equipment via the outlet pipe 333. The fourth outlet of the first water tank 33 is connected to the inlet pipe 332, through which room temperature water is replenished to the first water tank 33. Furthermore, a mixing valve is installed on the outlet pipe 333, and the inlet pipe 332 is connected to the mixing valve via a mixing branch pipe 334. When the mixing valve is open, the room temperature water from the inlet pipe 332 and the high temperature water from the outlet pipe 333 mix at the mixing valve and then flow to the water-using equipment.

[0051] Optionally, such as Figure 1 As shown, the heating and cooling unit also includes a fan coil unit 43 and / or a floor heating coil 44, and a second water circulation loop 451 is used to regulate the temperature of the fan coil unit 43 and / or the floor heating coil 44. In this embodiment, when the fan coil unit 43 is present, the airflow of the fan transfers the heat or cold energy of the fan coil unit 43 to the room. When the floor heating coil 44 is present, the floor heating coil 44 transfers the cold or heat energy to the room through ground radiation. Optionally, the heating and cooling unit also includes a second water tank 45, the first water inlet of the second water tank 45 is connected to the first end of the second water channel 42 through a fourth water passage, and the second water inlet of the second water tank 45 is connected to the second end of the second water channel 42 through a fifth water passage. The fan coil unit 43 and the floor heating coil 44 are arranged in parallel on the fourth water passage. At this time, the third and fourth water passages form the second water circulation loop 451. Water in the second water tank 45 can flow directly along the second water circulation loop 451, and when the water flows through the second water channel 42, it can exchange heat with the second refrigerant channel 41. Optionally, the heating and cooling unit also includes a second water pump 46, which circulates in the second water circulation loop 451 when the second water pump 46 is started.

[0052] Optionally, such as Figure 1 As shown, in a tri-generation air conditioning system with a first refrigerant circulation loop: a first multi-way valve 21 is installed on the connecting pipe between the exhaust port 11 and the first refrigerant passage 31. A second multi-way valve 22 and a third multi-way valve 23 are sequentially installed on the connecting pipe between the first refrigerant passage 31 and the second refrigerant passage 41. A fourth multi-way valve 24 is installed on the connecting pipe between the second refrigerant passage 41 and the third refrigerant passage 51. Specifically, the first multi-way valve 21 is connected to the third multi-way valve 23 via a first branch 211; the second multi-way valve 22 is connected between the second refrigerant passage 41 and the fourth multi-way valve 24 via a second branch 221; the third multi-way valve 23 is connected between the fourth multi-way valve 24 and the third refrigerant passage 51 via a third branch 231; and the fourth multi-way valve 24 is connected to the intake port 12 via a fourth branch 241. Furthermore, a first throttling device 13 is provided between the third multi-way valve 23 and the second fluorine channel 41, and a second throttling device 14 is provided between the fourth multi-way valve 24 and the third fluorine channel 51.

[0053] In this embodiment, a four-way reversing valve 2 is provided on the refrigerant circulation loop. The four-way reversing valve 2 includes reversing ports D, C, E, and S. Valve port D is connected to the discharge port 11 of the compressor 1, and valve port S is connected to the suction port 12. The first multi-way valve 21 includes valve ports a, b, and c; the second multi-way valve 22 includes valve ports d, e, and f; the third multi-way valve 23 includes valve ports g, h, i, and j; and the fourth multi-way valve 24 includes valve ports k, m, and n.

[0054] Specifically, valve port a is connected to reversing port C, valve port b is connected to the first end of the first refrigerant passage 31, valve port c is connected to the first end of the first branch 211, and the second end of the first branch 211 is connected to valve port i. Valve port d is connected to the second end of the first refrigerant passage 31, valve port e is connected to valve port g, valve port f is connected to the first end of the second branch 221, and the second end of the second branch 221 is connected between the second end of the second refrigerant passage 41 and valve port k. Valve port h is connected to the first end of the second refrigerant passage 41, valve port j is connected to the first end of the third branch 231, and the second end of the third branch 231 is connected between valve port m and the first end of the third refrigerant passage 51. Valve port k is connected to the second end of the second refrigerant passage 41, valve port m is connected to the first end of the third refrigerant passage 51, valve port n is connected to the first end of the fourth branch 241, and the second end of the fourth branch 241 is connected to the suction port 12 of compressor 1. The second end of the third refrigerant channel 51 is connected to the reversing port E, and the reversing port S is connected to the suction port 12 of the compressor 1. The first throttling device 13 is disposed between the valve port h and the first end of the second refrigerant channel 41, and the second throttling device 14 is disposed between the second end of the third branch 231 and the first end of the third refrigerant channel 51.

[0055] Optionally, such as Figure 2As shown, the tri-generation air conditioning system includes cooling and hot water modes. In this mode, the refrigerant flows sequentially along the exhaust port 11, the first multi-way valve 21, the first refrigerant passage 31, the second multi-way valve 22, the third multi-way valve 23, the first throttling device 13, the second refrigerant passage 41, the fourth multi-way valve 24, and the fourth branch 241 to the intake port 12. Furthermore, the first throttling device 13 throttles the refrigerant flow, and the second throttling device 14 is closed.

[0056] In this embodiment, the refrigerant circulation path for both cooling and hot water modes is as follows: Figure 2 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected. The valve ports a and b of the first multi-way valve 21 are connected, and valve port c is closed. The valve ports d and e of the second multi-way valve 22 are connected, and valve port f is closed. The valve ports g and h of the third multi-way valve 23 are connected, and valve port j is closed. The valve ports k and n of the fourth multi-way valve 24 are connected, and valve port m is closed. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 generates cooling, and there is no refrigerant flow in the third refrigerant channel 51. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331. The first water channel 32 exchanges heat with the first refrigerant channel 31, and the heat is transferred to the first water tank 33 through the first water circulation loop 331, thereby increasing the temperature of the first water tank 33. At the same time, the second water pump 46 is started to make the second water circulation loop 451 flow, the second water channel 42 exchanges heat with the second refrigerant channel 41, and transfers the cooling capacity to the fan coil unit 43 and the underfloor heating coil 44 through the second water circulation loop 451, thereby reducing the indoor temperature.

[0057] Optionally, such as Figure 3 As shown, the tri-generation air conditioning system includes heating and hot water modes. In this mode, refrigerant flows from the exhaust port 11 to the first multi-way valve 21. The refrigerant in the first multi-way valve 21 has two flow paths: one is along the first branch 211, the third multi-way valve 23, the first throttling device 13, and the second refrigerant channel 41 to the fourth multi-way valve 24; the other is along the first refrigerant channel 31, the second multi-way valve 22, and the second branch 221 to the fourth multi-way valve 24. Then, the refrigerant in the fourth multi-way valve 24 flows sequentially along the second throttling device 14 and the third refrigerant channel 51 to the intake port 12; and the first throttling device 13 is fully open while the second throttling device 14 is throttled.

[0058] In this embodiment, the refrigerant circulation path for heating and hot water modes is as follows: Figure 3As shown. The four-way reversing valve 2 has its reversing ports D and C connected, and E and S connected. The first multi-way valve 21 has its ports a, b, and c all connected. The second multi-way valve 22 has its ports d and f connected, and port e closed. The third multi-way valve 23 has its ports i and h connected, and port j closed. The fourth multi-way valve 24 has its ports k and m connected, and port n closed. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 generates heat, and the third refrigerant channel 51 generates cooling. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331. The first water channel 32 exchanges heat with the first refrigerant channel 31, transferring the heat through the first water circulation loop 331 to the first water tank 33, thereby increasing the temperature of the first water tank 33. At the same time, the second water pump 46 is started to make the second water circulation loop 451 flow, the second water channel 42 exchanges heat with the second refrigerant channel 41, and transfers the heat to the fan coil unit 43 and the underfloor heating coil 44 through the second water circulation loop 451, thereby increasing the indoor temperature.

[0059] Optionally, such as Figure 4 As shown, the tri-generation air conditioning system includes a hot water mode. In this mode, the refrigerant flows sequentially along the exhaust port 11, the first multi-way valve 21, the first refrigerant passage 31, the second multi-way valve 22, the third multi-way valve 23, the third branch 231, the second throttling device 14, and the third refrigerant passage 51 to the intake port 12. Furthermore, the first throttling device 13 is closed, and the second throttling device 14 throttles the refrigerant flow.

[0060] In this embodiment, the refrigerant circulation path in hot water mode is as follows: Figure 4 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected, and the reversing ports E and S are connected. The valve ports a and b of the first multi-way valve 21 are connected, and valve port c is closed. The valve ports d and e of the second multi-way valve 22 are connected, and valve port f is closed. The valve ports g and j of the third multi-way valve 23 are connected, and valve port h is closed. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 has no refrigerant flow, and the third refrigerant channel 51 generates cooling. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331, the first water channel 32 exchanges heat with the first refrigerant channel 31, and transfers the heat to the first water tank 33 through the first water circulation loop 331, thereby increasing the temperature of the first water tank 33. At the same time, the second water pump 46 is turned off.

[0061] Optionally, such as Figure 5 As shown, the tri-generation air conditioning system includes a heating mode. In this mode, the refrigerant flows sequentially along the exhaust port 11, the first multi-way valve 21, the first branch 211, the third multi-way valve 23, the first throttling device 13, the second refrigerant passage 41, the fourth multi-way valve 24, the second throttling device 14, and the third refrigerant passage 51 to the intake port 12. Furthermore, the first throttling device 13 is fully open, and the second throttling device 14 is throttled.

[0062] In this embodiment, the refrigerant circulation path in the heating mode is as follows: Figure 5 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected, and the reversing ports E and S are connected. The valve ports a and c of the first multi-way valve 21 are connected, while valve port b is closed. The valve ports g and h of the third multi-way valve 23 are connected, while valve port j is closed. The valve ports k and m of the fourth multi-way valve 24 are connected, while valve port n is closed. At this time, no refrigerant flows through the first refrigerant channel 31, the second refrigerant channel 41 generates heat, and the third refrigerant channel 51 generates cooling. Simultaneously, the second water pump 46 starts to circulate the second water circulation loop 451. The second water channel 42 exchanges heat with the second refrigerant channel 41, and the heat is transferred through the second water circulation loop 451 to the fan coil unit 43 and the underfloor heating coil 44, thereby increasing the indoor temperature. Meanwhile, the first water pump 34 is turned off.

[0063] Optionally, such as Figure 6 As shown, the tri-generation air conditioning system includes a cooling mode. In this mode, the refrigerant flows sequentially along the exhaust port 11, the third refrigerant passage 51, the second throttling device 14, the third branch 231, the third multi-way valve 23, the first throttling device 13, the second refrigerant passage 41, the fourth multi-way valve 24, and the fourth branch 241 to the intake port 12. Furthermore, the first throttling device 13 throttles the refrigerant while the second throttling device 14 is fully open.

[0064] In this embodiment, the refrigerant circulation path in the cooling mode is as follows: Figure 6 As shown. The reversing ports D and E of the four-way reversing valve 2 are connected, while the first multi-way valve 21 and the second multi-way valve 22 are both closed. The valve ports j and h of the third multi-way valve 23 are connected. The valve ports k and n of the fourth multi-way valve 24 are connected, and the valve port m is closed. At this time, no refrigerant flows through the first refrigerant channel 31, the second refrigerant channel 41 generates cooling, and the third refrigerant channel 51 generates heat. Simultaneously, the second water pump 46 starts to circulate the second water circulation loop 451. The second water channel 42 exchanges heat with the second refrigerant channel 41, and the cooling is transferred through the second water circulation loop 451 to the fan coil unit 43 and the underfloor heating coil 44, thereby lowering the indoor temperature. Meanwhile, the first water pump 34 is turned off.

[0065] Optionally, such as Figure 7As shown, in the case of a tri-generation air conditioning system with a second refrigerant circulation loop: a first shut-off valve 15 is provided along the connecting pipe from the first refrigerant passage 31 to the third refrigerant passage 51, and a first throttling device 13 is provided between the first refrigerant passage 31 and the first shut-off valve 15. A first multi-way valve 21 is provided along the connecting pipe from the third refrigerant passage 51 to the second refrigerant passage 41, and a second throttling device 14 is provided between the first multi-way valve 21 and the second refrigerant passage 41; a second multi-way valve 22 is provided along the connecting pipe from the second refrigerant passage 41 to the suction port 12. The first multi-way valve 21 is connected between the first throttling device 13 and the first shut-off valve 15 via a first branch 211, and the second multi-way valve 22 is connected between the exhaust port 11 and the first refrigerant passage 31 via a second branch 221. Furthermore, the second refrigerant circulation loop also includes a third branch 231 with a second shut-off valve 16 and a fourth branch 241 with a third shut-off valve 17. The first end of the third branch 231 is connected between the exhaust port 11 and the first fluorine passage 31, and its second end is connected between the first shut-off valve 15 and the third fluorine passage 51; the first end of the fourth branch 241 is connected to the intake port 12, and its second end is connected between the first shut-off valve 15 and the third fluorine passage 51.

[0066] In this embodiment, a four-way reversing valve 2 is provided on the refrigerant circulation loop. The four-way reversing valve 2 includes reversing ports D, C, E, and S. Valve port D is connected to the discharge port 11 of the compressor 1, and valve port S is connected to the suction port 12. The first multi-way valve 21 includes valve ports a, b, and c, and the second multi-way valve 22 includes valve ports d, e, and f. The second shut-off valve 16 is used to control the on / off of the third branch 231, and the third shut-off valve 17 is used to control the on / off of the fourth branch 241.

[0067] Specifically, valve port a is connected to the second end of the third fluorine channel 51, valve port b is connected to the first end of the second fluorine channel 41, valve port c is connected to the first end of the first branch 211, and the second end of the first branch 211 is connected between the first throttling device 13 and the first shut-off valve 15. Valve port d is connected to the second end of the second fluorine channel 41, valve port e is connected to the reversing port E, and valve port f is connected between the exhaust port 11 and the first fluorine channel 31.

[0068] Optionally, such as Figure 8 As shown, the tri-generation air conditioning system includes cooling and hot water modes. In this mode, the refrigerant flows sequentially along the exhaust port 11, the first refrigerant passage 31, the first throttling device 13, the first shut-off valve 15, the third refrigerant passage 51, the first multi-way valve 21, the second throttling device 14, the second refrigerant passage 41, and the second multi-way valve 22 to the intake port 12. Furthermore, the first throttling device 13 is fully open, and the second throttling device 14 throttles the refrigerant flow. The first shut-off valve 15 is open, while the second shut-off valve 16 and the third shut-off valve 17 are both closed.

[0069] In this embodiment, the refrigerant circulation path for both cooling and hot water modes is as follows: Figure 8 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected, as are reversing ports E and S. The valve ports a and b of the first multi-way valve 21 are connected, while valve port c is closed. The valve ports d and e of the second multi-way valve 22 are connected, while valve port f is closed. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 generates cooling, and the third refrigerant channel 51 generates heat. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331, allowing the first water channel 32 to exchange heat with the first refrigerant channel 31, and transferring the heat through the first water circulation loop 331 to the first water tank 33, thereby increasing the temperature of the first water tank 33. Simultaneously, the second water pump 46 starts to circulate the second water circulation loop 451, allowing the second water channel 42 to exchange heat with the second refrigerant channel 41, and transferring the cooling through the second water circulation loop 451 to the fan coil unit 43 and the underfloor heating coil 44, thereby decreasing the indoor temperature.

[0070] Optionally, such as Figure 9 As shown, the tri-generation air conditioning system includes heating and hot water modes. In this mode, the refrigerant at the exhaust port 11 has two flow paths: one is to flow sequentially along the first refrigerant channel 31, the first throttling device 13, and the first branch 211 to the first multi-way valve 21; the other is to flow sequentially along the second branch 221, the second multi-way valve 22, the second refrigerant channel 41, and the second throttling device 14 to the first multi-way valve 21. Then, the refrigerant at the first multi-way valve 21 flows sequentially along the third refrigerant channel 51 and the fourth branch 241 to the intake port 12. Furthermore, both the first throttling device 13 and the second throttling device 14 throttle the refrigerant flow.

[0071] In this embodiment, the refrigerant circulation path for heating and hot water modes is as follows: Figure 9 As shown. The four-way reversing valve 2 has its reversing ports D and C connected, and E and S connected. The first multi-way valve 21 has its ports a, b, and c all connected. The second multi-way valve 22 has its ports d and f connected, and port e closed. The first shut-off valve 15 and the second shut-off valve 16 are both closed, and the third shut-off valve 17 is open. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 generates heat, and the third refrigerant channel 51 generates cooling. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331. The first water channel 32 exchanges heat with the first refrigerant channel 31, transferring the heat through the first water circulation loop 331 to the first water tank 33, thereby increasing the temperature of the first water tank 33. At the same time, the second water pump 46 is started to make the second water circulation loop 451 flow, the second water channel 42 exchanges heat with the second refrigerant channel 41, and transfers the heat to the fan coil unit 43 and the underfloor heating coil 44 through the second water circulation loop 451, thereby increasing the indoor temperature.

[0072] Optionally, the tri-generation air conditioning system includes a hot water mode, in which the refrigerant flows sequentially from the exhaust port 11, the first refrigerant passage 31, the first throttling device 13, the first branch 211, the first multi-way valve 21, the third refrigerant passage 51, the fourth branch 241, and the third shut-off valve 17 to the intake port 12; and the first throttling device 13 throttles the refrigerant while the second throttling device 14 is closed. The first shut-off valve 15 and the second shut-off valve 16 are both closed, while the third shut-off valve 17 is open.

[0073] In this embodiment, the refrigerant circulation path in hot water mode is as follows: Figure 10 As shown. The four-way reversing valve 2 has its reversing ports D and C connected, and its reversing ports E and S connected. The first multi-way valve 21 has its valve ports a and c connected, while its valve port b is closed. The second multi-way valve 22 is closed. At this time, the first refrigerant channel 31 generates heat, the second refrigerant channel 41 has no refrigerant flow, and the third refrigerant channel 51 generates cooling. Simultaneously, the first water pump 34 starts to circulate the first water circulation loop 331, allowing heat exchange between the first water channel 32 and the first refrigerant channel 31, and transferring the heat to the first water tank 33 through the first water circulation loop 331, thereby increasing the temperature of the first water tank 33. Simultaneously, the second water pump 46 is turned off.

[0074] Optionally, such as Figure 11 As shown, the tri-generation air conditioning system includes a heating mode. In this mode, the refrigerant flows sequentially from the exhaust port 11, the second branch 221, the second multi-way valve 22, the second refrigerant channel 41, the second throttling device 14, the first multi-way valve 21, the third refrigerant channel 51, the fourth branch 241, and the third shut-off valve 17 to the intake port 12. Furthermore, the first throttling device 13 is closed and the second throttling device 14 throttles the refrigerant, the first shut-off valve 15 and the second shut-off valve 16 are both closed, and the third shut-off valve 17 is open.

[0075] In this embodiment, the refrigerant circulation path in the heating mode is as follows: Figure 11 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected, and the reversing ports E and S are connected. The valve ports a and b of the first multi-way valve 21 are connected, while valve port c is closed. The valve ports d and f of the second multi-way valve 22 are connected, while valve port e is closed. At this time, no refrigerant flows through the first refrigerant passage 31, the second refrigerant passage 41 generates heat, and the third refrigerant passage 51 generates cooling. Simultaneously, the second water pump 46 starts to circulate the second water circulation loop 451. The second water passage 42 exchanges heat with the second refrigerant passage 41, and the heat is transferred through the second water circulation loop 451 to the fan coil unit 43 and the underfloor heating coil 44, thereby increasing the indoor temperature. At the same time, the first water pump shuts down.

[0076] Optionally, such as Figure 12As shown, the tri-generation air conditioning system includes a cooling mode. In this mode, the refrigerant flows sequentially from the exhaust port 11, the third branch 231, the third refrigerant channel 51, the first multi-way valve 21, the second throttling device 14, the second refrigerant channel 41, and the second multi-way valve 22 to the intake port 12. Furthermore, the first throttling device 13 is closed and the second throttling device 14 throttles the refrigerant, the first shut-off valve 15 and the third shut-off valve 17 are both closed, and the second shut-off valve 16 is open.

[0077] In this embodiment, the refrigerant circulation path in the cooling mode is as follows: Figure 12 As shown. The reversing ports D and C of the four-way reversing valve 2 are connected, and the reversing ports E and S are connected. The valve ports a and b of the first multi-way valve 21 are connected, while valve port c is closed. The valve ports d and e of the second multi-way valve 22 are connected, while valve port f is closed. At this time, no refrigerant flows through the first refrigerant channel 31, the second refrigerant channel 41 generates cooling, and the third refrigerant channel 51 generates heat. Simultaneously, the second water pump 46 starts to circulate the second water circulation loop 451. The second water channel 42 exchanges heat with the second refrigerant channel 41, and the cooling is transferred through the second water circulation loop 451 to the fan coil unit 43 and the underfloor heating coil 44, thereby lowering the indoor temperature. At the same time, the first water pump shuts down.

[0078] Optionally, such as Figure 13 As shown, the tri-generation air conditioning system includes a defrost mode. In this mode, the refrigerant flows sequentially from the exhaust port 11, the third shut-off valve 17, the fourth branch 241, the third refrigerant channel 51, the first multi-way valve 21, the first throttling device 13, and the first refrigerant channel 31 to the intake port 12. Furthermore, the first throttling device 13 throttles the refrigerant while the second throttling device 14 is closed. The first shut-off valve 15 and the second shut-off valve 16 are both closed, while the third shut-off valve 17 is open.

[0079] In this embodiment, the refrigerant circulation path in the cooling mode is as follows: Figure 13 As shown. The reversing port D of the four-way reversing valve 2 is connected to the reversing port E, and the reversing port C is connected to the reversing port S. The valve ports a and c of the first multi-way valve 21 are open, while the valve port b is closed. At this time, the first water pump 34 starts, using the first water circulation loop 331 to transfer heat from the first water tank 33 to the first water channel 32. The first water channel 32 then exchanges heat with the first refrigerant channel 31, thereby defrosting the first refrigerant channel 31. Simultaneously, the high-temperature refrigerant flowing through the third refrigerant channel 51 also defrosts the third refrigerant channel 51.

[0080] As can be seen from the above embodiments, the tri-generation air conditioning system of this application can realize multiple functional modes, thereby meeting the user's needs.

[0081] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A tri-generation air conditioning system, characterized in that, include: The compressor (1) includes an intake port (12) and an exhaust port (11); The first heat exchanger (3) includes a first fluorine channel (31) and a first water channel (32) that exchange heat with each other; The second heat exchanger (4) includes a second fluorine channel (41) and a second water channel (42) that exchange heat with each other; The third heat exchanger (5) includes a third fluorine passage (51) and an air passage for mutual heat exchange; The hot water supply unit includes a first water circulation loop (331) connected to the first water channel (32) for supplying domestic hot water; The heating and cooling unit includes a second water circulation loop (451) connected to the second water channel (42) for regulating indoor temperature; The compressor (1)’s exhaust port (11), first refrigerant passage (31), second refrigerant passage (41), third refrigerant passage (51), and suction port (12) are connected in series to form a first refrigerant circulation loop. Alternatively, the compressor (1)’s exhaust port (11), first refrigerant passage (31), third refrigerant passage (51), second refrigerant passage (41), and suction port (12) are connected in series to form a second refrigerant circulation loop.

2. The tri-generation air conditioning system according to claim 1, characterized in that, In the case of having a first refrigerant circulation loop: A first multi-way valve (21) is provided on the connecting pipeline between the exhaust port (11) and the first fluorine channel (31); A second multi-way valve (22) and a third multi-way valve (23) are sequentially installed on the connecting pipeline from the first fluorine channel (31) to the second fluorine channel (41); A fourth multi-way valve (24) is provided on the connecting pipeline from the second fluorine channel (41) to the third fluorine channel (51); The first multi-way valve (21) is connected to the third multi-way valve (23) through the first branch (211), the second multi-way valve (22) is connected to the second fluorine channel (41) and the fourth multi-way valve (24) through the second branch (221), the third multi-way valve (23) is connected to the fourth multi-way valve (24) and the third fluorine channel (51) through the third branch (231), and the fourth multi-way valve (24) is connected to the suction port (12) through the fourth branch (241); and a first throttling device (13) is provided between the third multi-way valve (23) and the second fluorine channel (41), and a second throttling device (14) is provided between the fourth multi-way valve (24) and the third fluorine channel (51).

3. The tri-generation air conditioning system according to claim 2, characterized in that, include: In the cooling and hot water mode, the refrigerant flows sequentially along the exhaust port (11), the first multi-way valve (21), the first refrigerant channel (31), the second multi-way valve (22), the third multi-way valve (23), the first throttling device (13), the second refrigerant channel (41), the fourth multi-way valve (24), and the fourth branch (241) to the suction port (12); and the first throttling device (13) throttles the refrigerant and the second throttling device (14) is closed.

4. The tri-generation air conditioning system according to claim 2, characterized in that, include: In the heating and hot water mode, the refrigerant flows from the exhaust port (11) to the first multi-way valve (21), and the refrigerant in the first multi-way valve (21) has two flow paths: one is along the first branch (211), the third multi-way valve (23), the first throttling device (13), and the second refrigerant channel (41) to the fourth multi-way valve (24), and the other is along the first refrigerant channel (31), the second multi-way valve (22), and the second branch (221) to the fourth multi-way valve (24); then, the refrigerant in the fourth multi-way valve (24) flows sequentially along the second throttling device (14) and the third refrigerant channel (51) to the air intake (12); and the first throttling device (13) is fully open and the second throttling device (14) is throttled.

5. The tri-generation air conditioning system according to claim 2, characterized in that, include: In hot water mode, the refrigerant flows sequentially along the exhaust port (11), the first multi-way valve (21), the first refrigerant channel (31), the second multi-way valve (22), the third multi-way valve (23), the third branch (231), the second throttling device (14), and the third refrigerant channel (51) to the intake port (12); and the first throttling device (13) is closed and the second throttling device (14) is throttled; and / or, In heating mode, the refrigerant flows sequentially along the exhaust port (11), the first multi-way valve (21), the first branch (211), the third multi-way valve (23), the first throttling device (13), the second refrigerant channel (41), the fourth multi-way valve (24), the second throttling device (14), and the third refrigerant channel (51) to the intake port (12); and the first throttling device (13) is fully open and the second throttling device (14) is throttled; and / or, In the cooling mode, the refrigerant flows sequentially along the exhaust port (11), the third refrigerant channel (51), the third branch (231), the third multi-way valve (23), the first throttling device (13), the second refrigerant channel (41), the fourth multi-way valve (24), and the fourth branch (241) to the suction port (12); and the first throttling device (13) throttles and the second throttling device (14) is fully open.

6. The tri-generation air conditioning system according to claim 1, characterized in that, In the case of a second refrigerant circulation loop: A first throttling device (13) and a first shut-off valve (15) are sequentially installed on the connecting pipeline from the first fluorine channel (31) to the third fluorine channel (51); A first multi-way valve (21) and a second throttling device (14) are sequentially installed on the connecting pipeline from the third fluorine channel (51) to the second fluorine channel (41); A second multi-way valve (22) is provided on the connecting pipeline from the second fluorine channel (41) to the suction port (12); The first multi-way valve (21) is connected between the first throttling device (13) and the first shut-off valve (15) via the first branch (211), and the second multi-way valve (22) is connected between the exhaust port (11) and the first refrigerant channel (31) via the second branch (221). The second refrigerant circulation loop also includes a third branch (231) with a second shut-off valve (16) and a fourth branch (241) with a third shut-off valve (17). The first end of the third branch (231) is connected between the exhaust port (11) and the first refrigerant channel (31), and its second end is connected between the first shut-off valve (15) and the third refrigerant channel (51). The first end of the fourth branch (241) is connected to the intake port (12), and its second end is connected between the first shut-off valve (15) and the third refrigerant channel (51).

7. The tri-generation air conditioning system according to claim 6, characterized in that, include: In the cooling and hot water mode, the refrigerant flows sequentially along the exhaust port (11), the first refrigerant channel (31), the first throttling device (13), the first shut-off valve (15), the third refrigerant channel (51), the first multi-way valve (21), the second throttling device (14), the second refrigerant channel (41), and the second multi-way valve (22) to the suction port (12); and the first throttling device (13) is fully open and the second throttling device (14) is throttled, the first shut-off valve (15) is open, and the second shut-off valve (16) and the third shut-off valve (17) are both closed.

8. The tri-generation air conditioning system according to claim 6, characterized in that, include: In the heating and hot water mode, the refrigerant at the exhaust port (11) has two flow paths: one is to flow sequentially along the first refrigerant channel (31), the first throttling device (13) and the first branch (211) to the first multi-way valve (21); the other is to flow sequentially along the second branch (221), the second multi-way valve (22), the second refrigerant channel (41) and the second throttling device (14) to the first multi-way valve (21); then, the refrigerant at the first multi-way valve (21) flows sequentially along the third refrigerant channel (51) and the fourth branch (241) to the intake port (12); and the first throttling device (13) and the second throttling device (14) are both throttled, the first shut-off valve (15) and the second shut-off valve (16) are both closed, and the third shut-off valve (17) is open.

9. The tri-generation air conditioning system according to claim 6, characterized in that, include: In hot water mode, the refrigerant flows sequentially from the exhaust port (11), the first refrigerant channel (31), the first throttling device (13), the first branch (211), the first multi-way valve (21), the third refrigerant channel (51), the fourth branch (241), and the third shut-off valve (17) to the intake port (12); and the first throttling device (13) throttles and the second throttling device (14) is closed, the first shut-off valve (15) and the second shut-off valve (16) are both closed, and the third shut-off valve (17) is open; and / or, In heating mode, the refrigerant flows sequentially from the exhaust port (11), the second branch (221), the second multi-way valve (22), the second refrigerant channel (41), the second throttling device (14), the first multi-way valve (21), the third refrigerant channel (51), the fourth branch (241), and the third shut-off valve (17) to the intake port (12); and the first throttling device (13) is closed and the second throttling device (14) is throttling, the first shut-off valve (15) and the second shut-off valve (16) are both closed, and the third shut-off valve (17) is open; and / or, In the cooling mode, the refrigerant flows sequentially from the exhaust port (11), the third branch (231), the third refrigerant channel (51), the first multi-way valve (21), the second throttling device (14), the second refrigerant channel (41), and the second multi-way valve (22) to the suction port (12); and the first throttling device (13) is closed and the second throttling device (14) is throttling, the first shut-off valve (15) and the third shut-off valve (17) are both closed, and the second shut-off valve (16) is open; and / or, In defrosting mode, the refrigerant flows sequentially from the exhaust port (11), the third shut-off valve (17), the fourth branch (241), the third refrigerant channel (51), the first multi-way valve (21), the first throttling device (13), and the first refrigerant channel (31) to the intake port (12); and the first throttling device (13) throttles and the second throttling device (14) is closed, the first shut-off valve (15) and the second shut-off valve (16) are both closed, and the third shut-off valve (17) is open.

10. The tri-generation air conditioning system according to any one of claims 1 to 9, characterized in that, The hot water supply unit also includes a first water tank (33), a first water circulation loop (331) for regulating the temperature of the first water tank (33); and / or, The heating and cooling unit also includes a fan coil unit (43) and / or a floor heating coil (44), and a second water circulation loop (451) is used to regulate the temperature of the fan coil unit (43) and / or the floor heating coil (44).

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