Heat exchange system and heat exchange device

Abstract

The present application discloses a heat exchange system and a heat exchange device. The heat exchange system comprises a compression device and a first heat exchange unit; the first heat exchange unit comprises a first switching device, a first heat exchange device, a second heat exchange device, and a third heat exchange device; the first heat exchange device is provided with a first heat exchange channel and a second heat exchange channel; the compression device is communicated with the first heat exchange channel, the second heat exchange device, and the third heat exchange device by means of the first switching device; and the first switching device is used for controlling a first heat exchange medium discharged by the compression device to flow through at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device to form a heat exchange circulation loop.

Description

Heat exchange system and heat exchange device

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202410676352.2, filed on May 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of heat exchanger technology, and particularly to a heat exchange system and heat exchanger. Background Technology

[0004] Existing heat exchange systems, such as air conditioning systems, typically consist of an evaporator and a condenser. This limits the functionality of existing heat exchange systems. To add more functionality, an additional set of equipment with corresponding functions is usually required, resulting in complex structures and poor applicability of existing heat exchange systems. Summary of the Invention

[0005] The main objective of this application is to propose a heat exchange system that is simple in structure and can perform multiple functions.

[0006] To achieve the above objectives, this application proposes a heat exchange system, which includes:

[0007] Compression device;

[0008] The first heat exchange unit includes a first switching device, a first heat exchange device, a second heat exchange device, and a third heat exchange device. The first heat exchange device has a first heat exchange channel and a second heat exchange channel. The compression device is connected to the first heat exchange channel, the second heat exchange device, and the third heat exchange device via the first switching device. The first switching device is used to control the first heat exchange medium discharged by the compression device to flow through at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device to form a heat exchange circulation loop. The second heat exchange channel is used for the flow of a second heat exchange medium to exchange heat with the first heat exchange medium flowing through the first heat exchange channel.

[0009] In one embodiment, the heat exchange system further includes a first inlet pipe and a first outlet pipe, wherein the first inlet pipe, the second heat exchange channel, and the first outlet pipe are sequentially connected to form a first heating flow path.

[0010] In one embodiment, the heat exchange system has a first operating mode. In the first operating mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel before being discharged to the outside of the first heating flow path.

[0011] In one embodiment, the heat exchange system further includes a fourth heat exchange device, which has a third heat exchange channel and a fourth heat exchange channel. The third heat exchange channel is connected to the first liquid outlet pipe. The third heat exchange channel is used to supply the second heat exchange medium to flow through, and the fourth heat exchange channel is used to supply water to flow through, so as to exchange heat with the second heat exchange medium flowing through the third heat exchange channel.

[0012] In one embodiment, the heat exchange system further includes a second inlet pipe and a second outlet pipe, wherein the second inlet pipe, the fourth heat exchange channel, and the second outlet pipe are sequentially connected to form a second heating flow path.

[0013] In one embodiment, the heat exchange system further has a second operating mode. In the second operating mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium. After flowing through the third heat exchange channel, it is discharged to the outside of the first heating flow path. The water flowing through the fourth heat exchange channel absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel and flows out to the outside of the second heating flow path.

[0014] In one embodiment, the heat exchange system further includes a second switching device, wherein the first liquid outlet pipe located downstream of the third heat exchange channel is connected to the first liquid inlet pipe via the second switching device to form a medium circulation loop.

[0015] In one embodiment, the heat exchange system further has a third operating mode. In the third operating mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The second switching device controls the second heat exchange medium to circulate in the medium circulation loop. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium. The water flowing through the fourth heat exchange channel absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel and then flows out of the second heating flow path.

[0016] In one embodiment, the heat exchange system further has a fourth operating mode, in which the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel to condense and release heat, and then flow through the second or third heat exchange device to evaporate and absorb heat before returning to the compression device.

[0017] In one embodiment, the heat exchange system further includes a second heat exchange unit, which is connected to the compression device to form a heat exchange circulation loop.

[0018] In one embodiment, the second heat exchange unit includes a third switching device, a fifth heat exchange device, and a sixth heat exchange device; the fifth heat exchange device has a fifth heat exchange channel and a sixth heat exchange channel; the third switching device is used to control the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel and the sixth heat exchange device to form a heat exchange circulation loop; the sixth heat exchange channel is connected to the second heat exchange channel, and the sixth heat exchange channel is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel.

[0019] In one embodiment, the second heat exchange unit includes a third switching device, a fifth heat exchange device, a sixth heat exchange device, and a seventh heat exchange device; the fifth heat exchange device has a fifth heat exchange channel and a sixth heat exchange channel, and the compression device is connected to the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device via the third switching device. The third switching device is used to control the first heat exchange medium discharged by the compression device to flow through at least two of the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device to form a heat exchange circulation loop.

[0020] The sixth heat exchange channel is connected to the second heat exchange channel. The sixth heat exchange channel is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel.

[0021] In one embodiment, the heat exchange system further has a fifth operating mode, in which the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the second heat exchange device to condense and release heat; the third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel to condense and release heat, and to flow through the sixth heat exchange device to evaporate and absorb heat.

[0022] Alternatively, in the fifth operating mode, the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel to condense and release heat, and to flow through the second heat exchange device to evaporate and absorb heat; the third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the sixth heat exchange device to condense and release heat.

[0023] In one embodiment, the heat exchange system further has a sixth operating mode, in which the compression device is connected to the second and third heat exchange devices via the first switching device to form a heat exchange loop; the compression device is connected to the sixth and seventh heat exchange devices via the third switching device to form a heat exchange loop; the first heat exchange medium flows through one of the third and seventh heat exchange devices, condensing and releasing heat, and the other evaporates and absorbs heat.

[0024] In one embodiment, the heat exchange system further has a seventh operating mode. In the seventh operating mode, the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel and condense and release heat. The second heat exchange medium flows through the sixth heat exchange channel and the second heat exchange channel, both absorbing the heat released by the first heat exchange medium.

[0025] In one embodiment, in the seventh operating mode, the sixth heat exchange channel is located upstream of the second heat exchange channel along the flow direction of the second heat exchange medium, and the pressure of the first heat exchange medium flowing into the fifth heat exchange channel is less than the pressure of the first heat exchange medium flowing into the first heat exchange channel.

[0026] In one embodiment, the compression device has a first exhaust port and a second exhaust port, the first exhaust port being connected to the first switching device, and the second exhaust port being connected to the third switching device; in the seventh operating mode, the exhaust pressure of the first exhaust port is less than the exhaust pressure of the second exhaust port.

[0027] In one embodiment, the first switching device includes a first reversing valve and a second reversing valve. The compression device is connected to the first end of the first heat exchange channel, the first end of the second heat exchange device, and the first end of the third heat exchange device via the first reversing valve. The second end of the first heat exchange channel, the second end of the second heat exchange device, and the second end of the third heat exchange device are all connected to the second reversing valve.

[0028] In one embodiment, the third switching device includes a third reversing valve and a fourth reversing valve. The compression device is connected to the first end of the fifth heat exchange channel, the first end of the sixth heat exchange device, and the first end of the seventh heat exchange device via the third reversing valve. The second end of the fifth heat exchange channel, the second end of the sixth heat exchange device, and the second end of the seventh heat exchange device are all connected to the fourth reversing valve.

[0029] In one embodiment, the heat exchange system further includes a fourth switching device, wherein the first end of the third heat exchange device, the first end of the seventh heat exchange device, the first reversing valve, and the third reversing valve are all connected to the fourth switching device;

[0030] And / or, the heat exchange system further includes a fifth switching device, wherein the second end of the third heat exchange device, the second end of the seventh heat exchange device, the second reversing valve, and the fourth reversing valve are all connected to the fifth switching device.

[0031] In one embodiment, the heat exchange system further has an eighth operating mode. In the eighth operating mode, the second reversing valve, the fifth switching device, the seventh heat exchange device, the fourth switching device, and the first reversing valve are sequentially connected to form a first heat exchange branch, and a portion of the first heat exchange medium discharged by the compression device flows through the first heat exchange branch; the fourth reversing valve, the fifth switching device, the third heat exchange device, the fourth switching device, and the third reversing valve are sequentially connected to form a second heat exchange branch, and another portion of the first heat exchange medium discharged by the compression device flows through the second heat exchange branch.

[0032] In one embodiment, the compression device has a first exhaust port, a second exhaust port, and an intake port. The first exhaust port and the intake port form a heat exchange loop with at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device via the first switching device. The second exhaust port and the intake port form the heat exchange loop with at least two of the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device via the third switching device.

[0033] In one embodiment, the compression device is a dual-cylinder dual-suction dual-exhaust compressor, and the intake port includes a first sub-intake port and a second sub-intake port. The first sub-intake port is connected to the first switching device, and the second sub-intake port is connected to the third switching device.

[0034] This application also proposes a heat exchange device, which includes the heat exchange system described above.

[0035] The heat exchange system of this application includes a compression device and a first heat exchange unit. The first heat exchange unit includes a first switching device, a first heat exchange device, a second heat exchange device, and a third heat exchange device. The first heat exchange device has a first heat exchange channel and a second heat exchange channel. The compression device is connected to the first heat exchange channel, the second heat exchange device, and the third heat exchange device via the first switching device. The first switching device is used to control the first heat exchange medium discharged from the compression device to flow through at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device to form a heat exchange circulation loop. The second heat exchange channel is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the first heat exchange channel. This configuration enables the heat exchange system to achieve multiple functions. For example, in a heat exchange loop, the first heat exchange medium flows through the first heat exchange channel, condenses and releases heat, and then flows through at least one of the second and third heat exchange devices, evaporating and absorbing heat. At this time, the first heat exchange device generates heat, and the second heat exchange medium flows through the second heat exchange channel, absorbing the heat released by the first heat exchange medium, thus producing heat, such as hot water or underfloor heating. Furthermore, at least one of the second and third heat exchange devices can also perform cooling, meaning the first heat exchange medium flows through one or both of the second and third heat exchange devices, evaporating and absorbing heat for outdoor and / or indoor cooling. Alternatively, the first heat exchange medium flows through one of the second and third heat exchange devices... One heat exchanger condenses and releases heat, thus generating heat, while the other evaporates and absorbs heat, thus generating heat. In this way, during the flow of the first heat exchange medium, the heat exchange system achieves the functions of heating the first heat exchange device and cooling the second heat exchange device; or, the heat exchange system achieves the functions of heating the first heat exchange device and cooling the third heat exchange device; or, the heat exchange system achieves the functions of heating the first heat exchange device, cooling the second heat exchange device, and cooling the third heat exchange device; or, the heat exchange system achieves the functions of heating the first heat exchange device, heating the second heat exchange device, and cooling the third heat exchange device; or, the heat exchange system achieves the functions of heating the first heat exchange device, heating the third heat exchange device, and cooling the second heat exchange device. For example, in a heat exchange loop, the first heat exchange medium flows through one of the second and third heat exchange devices, whereby it condenses and releases heat, while the other evaporates and absorbs heat. That is, the heat exchange system achieves the functions of cooling the second heat exchange device and heating the third heat exchange device; or, the heat exchange system achieves the functions of heating the second heat exchange device and cooling the third heat exchange device. Therefore, this application proposes a heat exchange system with a simple structure that can achieve multiple functions. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the structure of the heat exchange system of the first embodiment of this application;

[0038] Figure 2 is a schematic diagram of the structure of the heat exchange system of the second embodiment of this application;

[0039] Figure 3 is a schematic diagram of the heat exchange system in Figure 2 in the first working mode;

[0040] Figure 4 is a schematic diagram of the heat exchange system in Figure 2 in the second working mode;

[0041] Figure 5 is a schematic diagram of the heat exchange system in Figure 2 in the third working mode;

[0042] Figure 6 is a schematic diagram of the heat exchange system in Figure 2 in the fourth working mode;

[0043] Figure 7 is a schematic diagram of the structure of the heat exchange system of the third embodiment of this application;

[0044] Figure 8 is a structural schematic diagram of the fourth embodiment of the heat exchange system of this application;

[0045] Figure 9 is a schematic diagram of the heat exchange system in Figure 8 in the first embodiment of the fifth working mode;

[0046] Figure 10 is a schematic diagram of the second embodiment of the heat exchange system in Figure 8 in the fifth working mode;

[0047] Figure 11 is a schematic diagram of the heat exchange system in Figure 8 in the first embodiment of the sixth working mode;

[0048] Figure 12 is a schematic diagram of the second embodiment of the heat exchange system in Figure 8 in the sixth working mode;

[0049] Figure 13 is a schematic diagram of the heat exchange system in Figure 8 in the first embodiment of the seventh working mode;

[0050] Figure 14 is a schematic diagram of the second embodiment of the heat exchange system in Figure 8 in the seventh working mode;

[0051] Figure 15 is a structural schematic diagram of the fifth embodiment of the heat exchange system of this application;

[0052] Figure 16 is a schematic diagram of the heat exchange system in Figure 15 in the first embodiment of the eighth working mode;

[0053] Figure 17 is a schematic diagram of the second embodiment of the heat exchange system in Figure 15 in the eighth operating mode.

[0054] Reference numerals in the attached diagrams: 10. Heat exchange system; 11. First inlet pipe; 12. First outlet pipe; 13. Fourth heat exchange device; 14. Third heat exchange channel; 15. Fourth heat exchange channel; 16. Second inlet pipe; 17. Second outlet pipe; 18. Second switching device; 100. Compression device; 110. Inlet; 111. First sub-inlet; 112. Second sub-inlet; 120. First outlet; 130. Second outlet; 200. First heat exchange unit; 210. First switching device; 211. First reversing valve; 212. Second reversing valve; 213. First throttling element; 214. Second throttling element; 220. First heat exchange device; 221. First heat exchange channel; 222. Second heat exchange channel; 230. Second heat exchange device; 240. Third heat exchange device; 300, Second heat exchange unit; 310, Third switching device; 311, Third reversing valve; 312, Fourth reversing valve; 313, Third throttling element; 314, Fourth throttling element; 320, Fifth heat exchange device; 321, Fifth heat exchange passage; 322, Sixth heat exchange passage; 330, Sixth heat exchange device; 340, Seventh heat exchange device; 400, Fourth switching device; 500, Fifth switching device.

[0055] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0057] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0058] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0059] Existing heat exchange systems, such as air conditioning systems, typically consist of an evaporator and a condenser. This limits the functionality of existing heat exchange systems. To add more functionality, an additional set of equipment with corresponding functions is usually required, resulting in complex structures and poor applicability of existing heat exchange systems.

[0060] To address the aforementioned problems, this application proposes a heat exchange system and a heat exchange device including the heat exchange system. The heat exchange system has a simple structure and can perform multiple functions.

[0061] Please refer to Figures 1 and 2. In an embodiment of the heat exchange system 10 of this application, the heat exchange system 10 includes a compression device 100 and a first heat exchange unit 200. The first heat exchange unit 200 includes a first switching device 210, a first heat exchange device 220, a second heat exchange device 230, and a third heat exchange device 240. The first heat exchange device 220 has a first heat exchange channel 221 and a second heat exchange channel 222. The compression device 100 is connected to the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 via the first switching device 210. The first switching device 210 is used to control the first heat exchange medium discharged by the compression device 100 to flow through at least two of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 to form a heat exchange circulation loop. The second heat exchange channel 222 is used for the flow of a second heat exchange medium to exchange heat with the first heat exchange medium flowing through the first heat exchange channel 221.

[0062] It is understood that the compression device 100 is not limited to a compressor. The number of compressors can be one, two, or more, and there is no limitation here. The first heat exchange medium can be a refrigerant, such as chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, or other Freon, or hydrofluorocarbons. The installation locations of the first heat exchanger 220, the second heat exchanger 230, and the third heat exchanger 240 are not limited; they can be installed indoors or outdoors. That is, the application scenarios of the first heat exchanger 220, the second heat exchanger 230, and the third heat exchanger 240 are not limited. For example, the first heat exchanger 220 can be installed indoors or outdoors, the second heat exchanger 230 can be an outdoor unit, and the third heat exchanger 240 can be an indoor unit; or, both the second heat exchanger 230 and the third heat exchanger 240 can be indoor units, installed in different rooms indoors. The location of the first heat exchanger 220 is not limited; for example, the first heat exchanger 220 and the second heat exchanger 230 can be installed within the same housing.

[0063] It should be noted that in the accompanying drawings, the arrows with solid thin lines indicate the direction of flow of the first heat exchange medium, the arrows with solid thick lines indicate the direction of flow of the second heat exchange medium, and the arrows with dashed lines indicate the direction of water flow.

[0064] Furthermore, the first heat exchange device 220 has a first heat exchange channel 221 and a second heat exchange channel 222, which are configured to exchange heat with each other. The specific shapes of the first heat exchange channel 221 and the second heat exchange channel 222 are not limited, such as, but not limited to, straight pipes, bent pipes, spirals, etc. The first heat exchange device 220 includes, but is not limited to, shell-and-tube heat exchangers, plate heat exchangers, shell-and-tube heat exchangers, etc. The first heat exchange channel 221 is used for the flow of the first heat exchange medium, and the second heat exchange channel 222 is used for the flow of the second heat exchange medium to exchange heat with the first heat exchange medium flowing through the first heat exchange channel 221. For example, when the first heat exchange medium condenses and releases heat when flowing through the first heat exchange channel 221, the second heat exchange medium flows through the second heat exchange channel 222. At this time, the second heat exchange medium can absorb the heat released by the first heat exchange medium, and the second heat exchange medium after absorbing heat can be used for heating, such as producing hot water or providing underfloor heating. The second heat exchange medium includes, but is not limited to, water, ethylene glycol aqueous solution, propylene glycol aqueous solution, etc.

[0065] Furthermore, the first switching device 210 is used to control the flow of the first heat exchange medium discharged from the compression device 100 through at least two of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 to form a heat exchange loop. That is, the compression device 100 is connected to any two of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 via the first switching device 210 to form a heat exchange loop; or, the compression device 100 is connected to all three of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 via the first switching device 210 to form a heat exchange loop. In the heat exchange loop, the first heat exchange medium can condense and release heat for heating, or it can evaporate and absorb heat for cooling. The order in which the first heat exchange medium flows through the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 is not limited here. Furthermore, the first switching device 210 is used to control the flow of the first heat exchange medium discharged from the compression device 100. The specific structure of the first switching device 210 will be described in detail later and will not be repeated here. The application scope of the heat exchange system 10 of this application includes, but is not limited to, domestic or industrial scenarios requiring heating, cooling or hot water supply, such as offices, hospitals, schools, and homes.

[0066] The heat exchange system 10 of this application includes a compression device 100 and a first heat exchange unit 200. The first heat exchange unit 200 includes a first switching device 210, a first heat exchange device 220, a second heat exchange device 230, and a third heat exchange device 240. The first heat exchange device 220 has a first heat exchange channel 221 and a second heat exchange channel 222. The compression device 100 is connected to the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 via the first switching device 210. The first switching device 210 is used to control the first heat exchange medium discharged from the compression device 100 to flow through at least two of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 to form a heat exchange circulation loop. The second heat exchange channel 222 is used to allow the second heat exchange medium to flow through so as to exchange heat with the first heat exchange medium flowing through the first heat exchange channel 221. This configuration enables the heat exchange system 10 to achieve multiple functions. For example, in a heat exchange loop, the first heat exchange medium flows through the first heat exchange channel 221, condenses and releases heat, and flows through at least one of the second heat exchange device 230 and the third heat exchange device 240, evaporates and absorbs heat. At this time, the first heat exchange device 220 generates heat, and the second heat exchange medium flows through the second heat exchange channel 222, absorbing the heat released by the first heat exchange medium for heating, such as hot water production or underfloor heating. Furthermore, at least one of the second heat exchange device 230 and the third heat exchange device 240 performs cooling; that is, the first heat exchange medium flows through one or both of the second and third heat exchange devices 230 and 240, evaporates and absorbs heat, and performs outdoor and / or indoor cooling. Alternatively, the first heat exchange medium flows through one of the second and third heat exchange devices 230 and 240, condenses and releases heat, and then... One heat exchanger generates heat, while the other absorbs heat through evaporation for cooling. Thus, during the flow of the first heat exchange medium, the heat exchange system 10 achieves the functions of heating by the first heat exchanger 220 and cooling by the second heat exchanger 230; or, the heat exchange system 10 achieves the functions of heating by the first heat exchanger 220 and cooling by the third heat exchanger 240; or, the heat exchange system 10 achieves the functions of heating by the first heat exchanger 220, cooling by the second heat exchanger 230 and cooling by the third heat exchanger 240; or, the heat exchange system 10 achieves the functions of heating by the first heat exchanger 220, heating by the second heat exchanger 230 and cooling by the third heat exchanger 240; or, the heat exchange system 10 achieves the functions of heating by the first heat exchanger 220, heating by the second heat exchanger 230 and cooling by the third heat exchanger 240. For example, in a heat exchange loop, the first heat exchange medium flows through one of the second heat exchange device 230 and the third heat exchange device 240, where it condenses and releases heat, while the other evaporates and absorbs heat. That is, the heat exchange system 10 achieves the functions of cooling in the second heat exchange device 230 and heating in the third heat exchange device 240; or, the heat exchange system 10 achieves the functions of heating in the second heat exchange device 230 and cooling in the third heat exchange device 240. Therefore, this application proposes a heat exchange system 10 with a simple structure that can achieve multiple functions.

[0067] For ease of explanation, the first heat exchange device 220 is defined as a shell-and-tube heat exchanger or a plate heat exchanger, the second heat exchange device 230 as the first outdoor unit, and the third heat exchange device 240 as the first indoor unit. As described above, in the heat exchange circulation loop, the first heat exchange medium flows through the first heat exchange channel 221, condenses and releases heat, and flows through at least one of the second heat exchange device 230 and the third heat exchange device 240, evaporates and absorbs heat. The heat exchange system 10 thus achieves the functions of heating with the first heat exchange device 220 and cooling with the first outdoor unit; or, the heat exchange system 10 simultaneously achieves the functions of heating with the first heat exchange device 220 and cooling with the first indoor unit, meaning the heat exchange system 10 simultaneously enables the first indoor unit to cool, and the first heat exchange device 220 to produce hot water and / or provide underfloor heating; or, the heat exchange system 10 achieves the functions of heating with the first heat exchange device 220, cooling with the first outdoor unit, and cooling with the first indoor unit, meaning the heat exchange system... The system 10 simultaneously enables the first indoor unit to cool, and the first heat exchange device 220 to produce hot water and / or provide underfloor heating; or, the heat exchange system 10 enables the first heat exchange device 220 to heat, the first outdoor unit to heat, and the first indoor unit to cool, that is, the heat exchange system 10 simultaneously enables the first outdoor unit to heat, the first indoor unit to cool, and the first heat exchange device 220 to produce hot water and / or provide underfloor heating; or, the heat exchange system 10 simultaneously enables the first heat exchange device 220 to heat, the first indoor unit to heat, and the first outdoor unit to cool, that is, the heat exchange system 10 simultaneously enables the first indoor unit to heat, the first outdoor unit to cool, and the first heat exchange device 220 to produce hot water and / or provide underfloor heating.

[0068] Please refer to the embodiments in Figures 1 and 2. The heat exchange system 10 further includes a first liquid inlet pipe 11 and a first liquid outlet pipe 12. The first liquid inlet pipe 11, the second heat exchange channel 222 and the first liquid outlet pipe 12 are sequentially connected to form a first heating flow path.

[0069] Understandably, the second heat exchange medium can flow into the second heat exchange channel 222 along the first inlet pipe 11, and after exchanging heat with the first heat exchange medium in the first heat exchange channel 221 within the second heat exchange channel 222, it flows outward along the first outlet pipe 12. The outflowing second heat exchange medium can be used to produce hot water, and can also serve as a heat source for underfloor heating, i.e., it can provide heating for underfloor heating, or indoor heating. The heat exchange system 10 of this solution, by forming a first heating flow path, allows the second heat exchange medium to flow smoothly into the second heat exchange channel 222 for heat exchange, while also facilitating connection between the heat exchange system 10 and external pipelines, thus improving the applicability of the heat exchange system 10.

[0070] Referring to Figure 3, in one embodiment, the heat exchange system 10 has a first operating mode. In the first operating mode, the first switching device 210 controls the first heat exchange medium discharged by the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat. The second heat exchange medium flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel 221 before being discharged to the outside of the first heating flow path.

[0071] It is understandable that in the first working mode, as shown in Figure 3, the order of the heat exchange circulation loop formed by the first heat exchange medium along the first heat exchange channel 221, the second heat exchange device 230 and the third heat exchange device 240 is not limited, as long as the first heat exchange medium flows through the first heat exchange channel 221 and condenses and releases heat. For example, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to first flow through the first heat exchange channel 221 to condense and release heat, and then flow through at least one of the second heat exchange device 230 and the third heat exchange device 240 to evaporate and absorb heat before returning to the compression device 100; or, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to flow through the second heat exchange device 230 and the first heat exchange channel 221 in sequence to condense and release heat before flowing into the third heat exchange device 240 to evaporate and absorb heat; or, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to flow through the third heat exchange device 240 and the first heat exchange channel 221 in sequence to condense and release heat before flowing into the second heat exchange device 230 to evaporate and absorb heat. With this configuration, the first heat exchange device 220 generates heat, and the second heat exchange medium flows through the second heat exchange channel 222 to absorb the heat released by the first heat exchange medium before being discharged to the outside of the first heating flow path for heating, such as producing hot water or providing underfloor heating. Specifically, in this scheme, the second heat exchange medium is water. In the first working mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to first flow through the first heat exchange channel 221 to condense and release heat for heating, then flow through the third heat exchange device 240 to evaporate and absorb heat for indoor cooling, and finally return to the compression device 100. Meanwhile, cold water flows into the second heat exchange channel 222 along the first inlet pipe 11 and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel 221, and the cold water is heated into hot water. The hot water flows out along the first outlet pipe 12 and can be used for underfloor heating and as domestic hot water. Thus, in the first working mode, the heat exchange system 10 can simultaneously realize the functions of the first indoor cooling system and the first heat exchange device 220 for hot water production and / or underfloor heating. Furthermore, the first heat exchange medium can fully release heat before evaporating and absorbing heat through the third heat exchange device 240, which helps to improve the heat utilization rate of the first heat exchange medium, thereby improving the energy efficiency of the heat exchange system 10.

[0072] Referring to Figure 2, in one embodiment, the heat exchange system 10 further includes a fourth heat exchange device 13, which has a third heat exchange channel 14 and a fourth heat exchange channel 15. The third heat exchange channel 14 is connected to the first liquid outlet pipe 12. The third heat exchange channel 14 is used to supply the second heat exchange medium to flow through, and the fourth heat exchange channel 15 is used to supply water to flow through, so as to exchange heat with the second heat exchange medium flowing through the third heat exchange channel 14.

[0073] It is understood that the specific shapes of the third heat exchange channel 14 and the fourth heat exchange channel 15 are not limited, such as, but not limited to, straight pipes, bent pipes, spirals, etc. The fourth heat exchange device 13 includes, but is not limited to, shell-and-tube heat exchangers, plate heat exchangers, shell-and-tube heat exchangers, etc. The third heat exchange channel 14 and the fourth heat exchange channel 15 are arranged to exchange heat with each other, so that the water flowing through the fourth heat exchange channel 15 can absorb the heat of the second heat exchange medium flowing through the third heat exchange channel 14, and the cold water is heated into hot water. The hot water flows out of the fourth heat exchange channel 15 and can be used for domestic hot water.

[0074] Referring to Figure 2, in one embodiment, the heat exchange system 10 further includes a second inlet pipe 16 and a second outlet pipe 17. The second inlet pipe 16, the fourth heat exchange channel 15, and the second outlet pipe 17 are sequentially connected to form a second heating flow path. This arrangement allows domestic hot water to flow smoothly into the fourth heat exchange channel 15 and absorb heat from the second heat exchange medium in the third heat exchange channel 14 before flowing outwards. The hot water flowing out of the second heating flow path can be used as domestic hot water. The second heating flow path facilitates connection to external pipelines, improving the applicability of the heat exchange system 10. For example, the heated second heat exchange medium flowing out along the first outlet pipe 12 is used for underfloor heating, and the heated water flowing out along the second outlet pipe 17 is used for domestic hot water.

[0075] Referring to Figure 4, in one embodiment, the heat exchange system 10 also has a second operating mode. In the second operating mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat. The second heat exchange medium flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium. After flowing through the third heat exchange channel 14, it is discharged to the outside of the first heating flow path. The water flowing through the fourth heat exchange channel 15 absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel 14 and then flows out to the outside of the second heating flow path.

[0076] Understandably, in the second working mode, as shown in Figure 4, the order of the heat exchange circulation loop formed by at least two of the first heat exchange medium along the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 is not limited. It is only necessary for the first heat exchange medium to condense and release heat as it flows through the first heat exchange channel 221, and for the second heat exchange medium to flow through the second heat exchange channel 222 and absorb the heat released by the first heat exchange medium, and then flow through the third heat exchange channel 14 before being discharged out of the first heating flow path. The discharged high-temperature first heat exchange medium can provide heating for underfloor heating. That is, in the second working mode, the heat exchange system 10 can provide heating, for example, for underfloor heating. At the same time, cold water flows through the fourth heat exchange channel 15 and absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel 14. The cold water is heated into hot water, and the hot water flows out through the second outlet pipe 17. The hot water can be used for domestic hot water.

[0077] Therefore, in the second working mode, the heat exchange system 10 can simultaneously realize the functions of the first heat exchange device 220 for underfloor heating and the fourth heat exchange device 13 for hot water production. This is beneficial to improving the heat utilization rate of the first heat exchange medium, thereby improving the energy efficiency of the heat exchange system 10.

[0078] Of course, in the second working mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to first flow through the first heat exchange channel 221 to condense and release heat for heating, then flow through the third heat exchange device 240 to evaporate and absorb heat for indoor cooling, and finally return to the compression device 100. In this way, in the second working mode, the heat exchange system 10 can simultaneously realize the functions of the first indoor cooling, the first heat exchange device 220 for underfloor heating, and the fourth heat exchange device 13 for hot water production. The first heat exchange medium can fully release heat before evaporating and absorbing heat through the third heat exchange device 240, thus improving the heat utilization rate of the first heat exchange medium and improving the energy efficiency of the heat exchange system 10.

[0079] Referring to Figure 2, in one embodiment, the heat exchange system 10 further includes a second switching device 18. The first liquid outlet pipe 12, located downstream of the third heat exchange channel 14, is connected to the first liquid inlet pipe 11 via the second switching device 18 to form a medium circulation loop. This arrangement allows the second switching device 18 to control the flow direction and flow rate of the second heat exchange medium in the first heating flow path, thereby adjusting the heat provided by the second heat exchange medium.

[0080] Referring to Figure 5, in one embodiment, the heat exchange system 10 also has a third operating mode. In the third operating mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat. The second switching device 18 controls the second heat exchange medium to circulate in the medium circulation loop. The second heat exchange medium flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium. The water flowing through the fourth heat exchange channel 15 absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel 14 and then flows out of the second heating flow path.

[0081] Understandably, in the third working mode, as shown in Figure 5, the order of the heat exchange circulation loop formed by at least two of the first heat exchange medium along the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 is not limited. It is only necessary for the first heat exchange medium to condense and release heat when it flows through the first heat exchange channel 221. Furthermore, the second heat exchange medium circulates in the medium circulation loop and does not flow outward. The second heat exchange medium flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium, so that the second heat exchange medium in the medium circulation loop has sufficient heat. When cold water flows through the fourth heat exchange channel 15 and absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel 14, the cold water can be quickly heated into hot water, that is, instant hot water is achieved without the need to pre-prepare hot water and add an extra water tank, which helps to simplify the structure of the heat exchange system 10. Therefore, in the third working mode, the heat exchange system 10 can realize the function of the fourth heat exchange device 13 to quickly produce hot water. The heat exchange system 10 does not need to add a water tank to pre-produce hot water, and the structure of the heat exchange system 10 is simple.

[0082] Of course, in the third working mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to first flow through the first heat exchange channel 221 to condense and release heat for heating, then flow through the third heat exchange device 240 to evaporate and absorb heat for indoor cooling, and finally return to the compression device 100. In this way, in the third working mode, the heat exchange system 10 can simultaneously achieve the function of cooling the first indoor unit and rapidly producing hot water through the fourth heat exchange device 13. The first heat exchange medium can fully release heat before evaporating and absorbing heat through the third heat exchange device 240, thus improving the heat utilization rate of the first heat exchange medium and improving the energy efficiency of the heat exchange system 10.

[0083] Please refer to Figure 6. In one embodiment, the heat exchange system 10 also has a fourth operating mode. In the fourth operating mode, the first switching device 210 controls the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat, and then flow through the second heat exchange device 230 or the third heat exchange device 240 to evaporate and absorb heat before returning to the compression device 100.

[0084] It is understandable that when the first heat exchange medium first flows through the first heat exchange channel 221 and condenses and releases heat, and then flows through the second heat exchange device 230 and evaporates and absorbs heat, the heat exchange system 10 realizes the heating function of the first heat exchange device 220; when the first heat exchange medium first flows through the first heat exchange channel 221 and condenses and releases heat, and then flows through the third heat exchange device 240 and evaporates and absorbs heat, the heat exchange system 10 simultaneously realizes the heating function of the first heat exchange device 220 and the cooling function of the first indoor unit, that is, the heat exchange system 10 simultaneously realizes the cooling function of the first indoor unit and the function of the first heat exchange device 220 in producing hot water and / or providing underfloor heating.

[0085] Referring to the embodiments in Figures 7 and 8, the heat exchange system 10 further includes a second heat exchange unit 300, which is connected to the compression device 100 to form a heat exchange circulation loop. It is understood that the second heat exchange unit 300 may have the same structure as the first heat exchange unit 200; alternatively, the second heat exchange unit 300 may include a portion of the structure of the first heat exchange unit 200, thereby increasing the functionality of the heat exchange system 10.

[0086] In one embodiment, the second heat exchange unit 300 includes a third switching device 310, a fifth heat exchange device 320, and a sixth heat exchange device 330; the fifth heat exchange device 320 has a fifth heat exchange channel 321 and a sixth heat exchange channel 322; the third switching device 310 is used to control the first heat exchange medium discharged from the compression device 100 to flow through the fifth heat exchange channel 321 and the sixth heat exchange device 330 to form a heat exchange circulation loop; the sixth heat exchange channel 322 is connected to the second heat exchange channel 222, and the sixth heat exchange channel 322 is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel 321.

[0087] It is understood that the sixth heat exchange device 330 can be either an indoor unit or an outdoor unit; no specific limitation is made here. Both the first heat exchange unit 200 and the second heat exchange unit 300 are connected to the compression device 100. That is, the compression device 100 can discharge a portion of the first heat exchange medium through the heat exchange loop formed by the first heat exchange unit 200, and the compression device 100 can also discharge another portion of the first heat exchange medium through the heat exchange loop formed by the second heat exchange unit 300. This allows the heat exchange system 10 to have multiple operating modes, thereby increasing the functionality of the heat exchange system 10. Furthermore, the heat exchange loop formed by the compression device 100 and the first heat exchange unit 200 is one of two independent heat exchange loops, while the heat exchange loop formed by the compression device 100 and the second heat exchange unit 300 is another independent heat exchange loop. Therefore, the heat exchange system 10 can achieve dual evaporation temperature and dual condensation temperature. For example, the third heat exchange device 240 is the first indoor unit, and the sixth heat exchange device 330 is the second indoor unit. The temperatures of the third heat exchange device 240 and the sixth heat exchange device 330 can be different, achieving a dual temperature zone setting. The third heat exchange device 240 and the sixth heat exchange device 330 can be installed in different rooms. Of course, the third heat exchange device 240 and the sixth heat exchange device 330 can also be installed in the same housing, that is, they can form a single indoor unit. In this case, the third heat exchange device 240 and the sixth heat exchange device 330 achieve cascade heat exchange within a single indoor unit, thus improving the energy efficiency of the heat exchange system 10.

[0088] Furthermore, the fifth heat exchange device 320 has a fifth heat exchange channel 321 and a sixth heat exchange channel 322, which are arranged to exchange heat with each other. The specific shapes of the fifth heat exchange channel 321 and the sixth heat exchange channel 322 are not limited, such as, but not limited to, straight tubes, bent tubes, spirals, etc. The fifth heat exchange device 320 includes, but is not limited to, using shell-and-tube heat exchangers, plate heat exchangers, shell-and-tube heat exchangers, etc. The fifth heat exchange channel 321 is used for the first heat exchange medium to flow through, and the sixth heat exchange channel 322 is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel 321. For example, when the first heat exchange medium condenses and releases heat as it flows through the fifth heat exchange channel 321, the second heat exchange medium flows through the sixth heat exchange channel 322. At this time, the second heat exchange medium can absorb the heat released by the first heat exchange medium. After absorbing the heat, the second heat exchange medium can generate heat, such as hot water or underfloor heating. Furthermore, the sixth heat exchange channel 322 is connected to the second heat exchange channel 222. When the second heat exchange medium flows through the second heat exchange channel 222, it can also absorb the heat released by the first heat exchange medium flowing through the first heat exchange channel 221. This allows the second heat exchange medium to absorb the heat released by the first heat exchange medium twice before flowing out, thus enabling rapid heating. In other words, it can quickly generate hot water and provide underfloor heating. The heat exchange system 10 has high heating efficiency.

[0089] Referring to the embodiments in Figures 7 and 8, the second heat exchange unit 300 includes a third switching device 310, a fifth heat exchange device 320, a sixth heat exchange device 330, and a seventh heat exchange device 340. The fifth heat exchange device 320 has a fifth heat exchange channel 321 and a sixth heat exchange channel 322. The compression device 100 is connected to the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 via the third switching device 310. The third switching device 310 is used to control the first heat exchange medium discharged by the compression device 100 to flow through at least two of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 to form a heat exchange circulation loop. The sixth heat exchange channel 322 is connected to the second heat exchange channel 222 and is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel 321.

[0090] It is understandable that the compression device 100 can discharge a portion of the first heat exchange medium through the heat exchange loop formed by the first heat exchange unit 200, and the compression device 100 can also discharge another portion of the first heat exchange medium through the heat exchange loop formed by the second heat exchange unit 300, enabling the heat exchange system 10 to have multiple operating modes, thereby increasing the functionality of the heat exchange system 10. Furthermore, the heat exchange loop formed by the compression device 100 and the first heat exchange unit 200, and the heat exchange loop formed by the compression device 100 and the second heat exchange unit 300, are two independent heat exchange loops. Therefore, the heat exchange system 10 can achieve dual evaporation temperatures and dual condensation temperatures, realizing a dual-temperature zone setting.

[0091] Furthermore, the installation locations of the fifth heat exchanger 320, the sixth heat exchanger 330, and the seventh heat exchanger 340 are not limited; they can be installed indoors or outdoors. That is, the application scenarios of the fifth heat exchanger 320, the sixth heat exchanger 330, and the seventh heat exchanger 340 are not limited. For example, the fifth heat exchanger 320 can be installed indoors or outdoors, the sixth heat exchanger 330 can be an outdoor unit, and the seventh heat exchanger 340 can be an indoor unit; or, both the sixth heat exchanger 330 and the seventh heat exchanger 340 can be indoor units, installed in different rooms indoors. The location of the fifth heat exchanger 320 is not limited; for example, the fifth heat exchanger 320 and the sixth heat exchanger 330 can be installed within the same housing.

[0092] Furthermore, the third switching device 310 is used to control the flow of the first heat exchange medium discharged from the compression device 100 through at least two of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 to form a heat exchange loop. That is, the compression device 100 is connected to any two of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 via the third switching device 310 to form a heat exchange loop; or, the compression device 100 is connected to three of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 via the third switching device 310 to form a heat exchange loop. In this heat exchange loop, the first heat exchange medium can condense and release heat for heating, or it can evaporate and absorb heat for cooling. The order in which the first heat exchange medium flows through the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 is not specified here. The third switching device 310 is used to control the flow of the first heat exchange medium discharged from the compression device 100. The specific structure of the third switching device 310 will be described in detail later, and will not be repeated here.

[0093] Furthermore, the fifth heat exchange device 320 has a fifth heat exchange channel 321 and a sixth heat exchange channel 322, which are arranged to exchange heat with each other. The specific shapes of the fifth heat exchange channel 321 and the sixth heat exchange channel 322 are not limited, such as, but not limited to, straight tubes, bent tubes, spirals, etc. The fifth heat exchange device 320 includes, but is not limited to, using shell-and-tube heat exchangers, plate heat exchangers, shell-and-tube heat exchangers, etc. The fifth heat exchange channel 321 is used for the first heat exchange medium to flow through, and the sixth heat exchange channel 322 is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel 321. For example, when the first heat exchange medium condenses and releases heat as it flows through the fifth heat exchange channel 321, the second heat exchange medium flows through the sixth heat exchange channel 322. At this time, the second heat exchange medium can absorb the heat released by the first heat exchange medium. After absorbing the heat, the second heat exchange medium can generate heat, such as hot water or underfloor heating. Furthermore, the sixth heat exchange channel 322 is connected to the second heat exchange channel 222. When the second heat exchange medium flows through the second heat exchange channel 222, it can also absorb the heat released by the first heat exchange medium flowing through the first heat exchange channel 221. This allows the second heat exchange medium to absorb the heat released by the first heat exchange medium twice before flowing out, thus enabling rapid heating. In other words, it can quickly generate hot water and provide underfloor heating. The heat exchange system 10 has high heating efficiency.

[0094] For ease of understanding, it is now defined that in the first heat exchange unit 200, the first heat exchange device 220 is a shell-and-tube heat exchanger or a plate heat exchanger, the second heat exchange device 230 is the first outdoor unit, and the third heat exchange device 240 is the first indoor unit; in the second heat exchange unit 300, the fifth heat exchange device 320 is a shell-and-tube heat exchanger or a plate heat exchanger, the sixth heat exchange device 330 is the second outdoor unit, and the seventh heat exchange device 340 is the second indoor unit.

[0095] Referring to Figure 9, in one embodiment, the heat exchange system 10 further has a fifth operating mode. In the fifth operating mode, the first switching device 210 controls a portion of the first heat exchange medium discharged from the compression device 100 to flow through the second heat exchange device 230 for condensation and heat release; the third switching device 310 controls another portion of the first heat exchange medium discharged from the compression device 100 to flow through the fifth heat exchange channel 321 for condensation and heat release, and flow through the sixth heat exchange device 330 for evaporation and heat absorption.

[0096] Understandably, in the fifth working mode, as shown in Figure 9, the first switching device 210 controls a portion of the first heat exchange medium discharged from the compression device 100 to flow through the second heat exchange device 230 to condense and release heat for outdoor defrosting. After releasing heat, the first heat exchange medium can flow through the first heat exchange channel 221 and / or the third heat exchange device 240 in the first heat exchange unit 200 before returning to the compression device 100. The third switching device 310 controls another portion of the first heat exchange medium discharged from the compression device 100 to flow through the fifth heat exchange channel 321 to condense and release heat for heating, such as hot water production or underfloor heating. After flowing through the sixth heat exchange device 330 to evaporate and absorb heat, it returns to the compression device 100. Therefore, in the fifth operating mode, the heat exchange system 10 forms two heat exchange circulation loops. One heat exchange circulation loop performs outdoor defrosting, and the other heat exchange circulation loop performs heating. The heat exchange system 10 simultaneously achieves the functions of heating and non-intrusive defrosting. Furthermore, after a preset time, when one heat exchange circulation loop completes defrosting, switching the flow direction of the first heat exchange medium in the two heat exchange circulation loops achieves the functions of constant temperature non-intrusive defrosting and heating. That is, after the preset time of operation in the fifth operating mode, the first switching device 210 and the third switching device 310 respectively control the first heat exchange medium discharged from the compressor 100 to flow in opposite directions. By repeating this process, the heat exchange system 10 can achieve the functions of constant temperature non-intrusive defrosting and heating.

[0097] Referring to Figure 10, in one embodiment, the heat exchange system 10 further has a fifth operating mode. In the fifth operating mode, the first switching device 210 controls a portion of the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat, and to flow through the second heat exchange device 230 to evaporate and absorb heat; the third switching device 310 controls another portion of the first heat exchange medium discharged from the compression device 100 to flow through the sixth heat exchange device 330 to condense and release heat.

[0098] Understandably, in the fifth working mode, the first switching device 210 controls a portion of the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 to condense and release heat for heating, such as hot water production or underfloor heating. After releasing heat, the first heat exchange medium flows through the second heat exchange device 230 in the first heat exchange unit 200 and then returns to the compression device 100. The third switching device 310 controls another portion of the first heat exchange medium discharged from the compression device 100 to flow through the sixth heat exchange device 330 to condense and release heat for outdoor defrosting. After releasing heat, the first heat exchange medium can flow through the fifth heat exchange channel 321 and / or the seventh heat exchange device 340 in the second heat exchange unit 300 and then return to the compression device 100. Therefore, in the fifth working mode, the heat exchange system 10 forms two heat exchange circulation loops. One heat exchange circulation loop is used for outdoor defrosting, and the other heat exchange circulation loop is used for heating. The heat exchange system 10 simultaneously realizes the functions of heating and non-intrusive defrosting. After a preset time, one heat exchange circulation loop completes defrosting. By switching the flow direction of the first heat exchange medium in the two heat exchange circulation loops, the functions of constant temperature non-intrusive defrosting and heating can be realized. That is, after the preset time of running the fifth working mode, the first switching device 210 and the third switching device 310 respectively control the first heat exchange medium discharged from the compression device 100 to flow in the opposite direction. By repeating this process, the heat exchange system 10 can realize the functions of constant temperature non-intrusive defrosting and heating.

[0099] Please refer to the embodiments in Figures 11 and 12. In the sixth operating mode, the compression device 100 is connected to the second heat exchange device 230 and the third heat exchange device 240 via the first switching device 210 to form a heat exchange loop; the compression device 100 is connected to the sixth heat exchange device 330 and the seventh heat exchange device 340 via the third switching device 310 to form a heat exchange loop; the first heat exchange medium flows through one of the third heat exchange device 240 and the seventh heat exchange device 340, where it condenses and releases heat, and the other evaporates and absorbs heat.

[0100] It is understandable that the third heat exchange device 240 and the seventh heat exchange device 340 can be housed in the same casing, i.e., they are both located in the same indoor unit; the second heat exchange device 230 and the sixth heat exchange device 330 can be housed in the same casing, i.e., they are both located in the same outdoor unit. In the sixth operating mode, in the heat exchange loop formed by the first heat exchange unit 200, as shown in Figure 12, when the first heat exchange medium flows through the third heat exchange device 240 and condenses and releases heat, the third heat exchange device 240 heats, and the second heat exchange device 230 cools; that is, the first indoor unit heats, and the first outdoor unit cools. Correspondingly, in the heat exchange loop formed by the second heat exchange unit 300, the sixth heat exchange device 330 heats, the first heat exchange medium flows through the seventh heat exchange device 340 and evaporates and absorbs heat, and the seventh heat exchange device 340 cools; that is, the second outdoor unit heats and defrosts, and the second indoor unit cools. Therefore, the heat exchange system 10 in this solution, by setting up a compression device 100, in the sixth working mode, discharges a portion of the first heat exchange medium for indoor heating and another portion for outdoor defrosting, thereby avoiding the problem of large indoor temperature fluctuations during the defrosting process. The heat exchange system 10 achieves defrosting without stopping, avoids sudden changes in the indoor environment, and realizes the function of seamless defrosting.

[0101] Referring to the embodiments in Figures 13 and 14, the heat exchange system 10 also has a seventh operating mode. In the seventh operating mode, the first switching device 210 controls a portion of the first heat exchange medium discharged from the compression device 100 to flow through the first heat exchange channel 221 and condense to release heat; the third switching device 310 controls another portion of the first heat exchange medium discharged from the compression device 100 to flow through the fifth heat exchange channel 321 and condense to release heat. The second heat exchange medium flows through the sixth heat exchange channel 322 and the second heat exchange channel 222, both absorbing the heat released by the first heat exchange medium.

[0102] It is understood that the second heat exchange medium includes, but is not limited to, water, ethylene glycol aqueous solution, propylene glycol aqueous solution, etc. This embodiment uses water as an example for illustration. In the seventh operating mode, a portion of the first heat exchange medium discharged from the compression device 100 flows through the first heat exchange channel 221, condenses and releases heat, and the first heat exchange device 220 heats the water. The second heat exchange medium flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel 221. That is, cold water flows through the second heat exchange channel 222 and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel 221, and the cold water is heated into hot water. Furthermore, another portion of the first heat exchange medium discharged from the compression device 100 flows through the fifth heat exchange channel 321, condenses and releases heat, and the fifth heat exchange device 320 heats the water. The second heat exchange medium flows through the sixth heat exchange channel 322 and absorbs the heat released by the first heat exchange medium flowing through the fifth heat exchange channel 321. That is, cold water flows through the sixth heat exchange channel 322 and absorbs the heat released by the first heat exchange medium flowing through the fifth heat exchange channel 321, and the cold water is heated into hot water. Therefore, in the seventh working mode, the second heat exchange medium can absorb the heat released by the first heat exchange medium twice and then flow outward, while the first heat exchange medium can fully release heat. This is beneficial to improving the heat utilization rate of the first heat exchange medium and reducing the pressure drop loss of the first heat exchange medium. In other words, this solution is beneficial to increasing the subcooling of the first heat exchange medium discharged by the compression device 100, thereby improving the energy efficiency of the heat exchange system 10. Furthermore, the second heat exchange medium, after absorbing heat twice, can heat up quickly, and cold water can be quickly heated into hot water, realizing the function of instant hot water production. That is to say, this solution does not require pre-prepared hot water and the addition of an extra water tank. The heat exchange system 10 of this application does not need a water tank to store hot water to realize the function of instant supply of domestic hot water. The heat exchange system 10 has a strong instant hot water production capability.

[0103] In one embodiment, in the seventh operating mode, the sixth heat exchange channel 322 is located upstream of the second heat exchange channel 222 along the flow direction of the second heat exchange medium, and the pressure of the first heat exchange medium flowing into the fifth heat exchange channel 321 is less than the pressure of the first heat exchange medium flowing into the first heat exchange channel 221.

[0104] It is understandable that in the seventh working mode, the first heat exchange medium flowing into the fifth heat exchange channel 321 is a medium-pressure heat exchange medium, and the first heat exchange medium flowing into the first heat exchange channel 221 is a high-pressure heat exchange medium. This allows the pressure of the first heat exchange medium in the first heat exchange device 220 and the fifth heat exchange device 320 to be set in a gradient in the seventh working mode, and the high-pressure heat exchange medium is more conducive to improving the heating capacity than the medium-pressure heat exchange medium. Correspondingly, the sixth heat exchange channel 322 is located upstream of the second heat exchange channel 222. When the second heat exchange medium flows in the heat exchange system 10, it first flows through the sixth heat exchange channel 322 to exchange heat with the medium-pressure heat exchange medium, and then flows through the second heat exchange channel 222 to exchange heat with the high-pressure heat exchange medium. This helps to increase the heat absorption of the second heat exchange medium, that is, the temperature of the second heat exchange medium is higher after two heat absorptions, thereby improving the instantaneous hot water production capacity of the heat exchange system 10. Furthermore, the first heat exchange medium flows in the heat exchange system 10 using a high-low pressure setting, which helps to reduce the pressure ratio of the compression device 100, thereby improving the energy efficiency of the heat exchange system 10.

[0105] In one embodiment, the compression device 100 has a first exhaust port 120 and a second exhaust port 130. The first exhaust port 120 is connected to the first switching device 210, and the second exhaust port 130 is connected to the third switching device 310. In the seventh operating mode, the exhaust pressure of the first exhaust port 120 is less than the exhaust pressure of the second exhaust port 130. This configuration allows the first exhaust port 120 and the second exhaust port 130 of the compression device 100 to discharge first heat exchange media at different pressures in the seventh operating mode. The first exhaust port 120 discharges a medium-pressure heat exchange medium, and the second exhaust port 130 discharges a high-pressure heat exchange medium. This eliminates the need for an additional pressure regulating device, ensuring that the pressure of the first heat exchange medium flowing into the fifth heat exchange channel 321 is less than the pressure of the first heat exchange medium flowing into the first heat exchange channel 221. This simplifies the structure of the heat exchange system 10, ensuring that the first heat exchange media flowing into the first heat exchange channel 221 and the fifth heat exchange channel 321 are set at high and low pressures, thereby reducing the pressure ratio of the compression device 100 and improving the energy efficiency of the heat exchange system 10.

[0106] Referring to Figure 15, in one embodiment, the first switching device 210 includes a first reversing valve 211 and a second reversing valve 212. The compression device 100 is connected to the first end of the first heat exchange channel 221, the first end of the second heat exchange device 230, and the first end of the third heat exchange device 240 via the first reversing valve 211. The second end of the first heat exchange channel 221, the second end of the second heat exchange device 230, and the second end of the third heat exchange device 240 are all connected to the second reversing valve 212.

[0107] It is understood that both the first reversing valve 211 and the second reversing valve 212 can be composed of multiple valve bodies or a single multi-way valve; the specific configuration is not limited here. For example, the first reversing valve 211 may include a four-way reversing valve and a three-way valve, and the second reversing valve 212 may include a three-way valve. By setting the first reversing valve 211 and the second reversing valve 212, the flow direction of the first heat exchange medium in the heat exchange circulation loop formed by the first heat exchange unit 200 can be adjusted, so that the heat exchange system 10 can have multiple operating modes, thereby realizing multiple functions.

[0108] Furthermore, the first switching device 210 also includes a first throttling element 213 and a second throttling element 214. Both the first throttling element 213 and the second throttling element 214 are disposed on the heat exchange circulation loop formed by the first heat exchange unit 200. The first throttling element 213 is disposed between the second reversing valve 212 and the second end of the second heat exchange device 230, and the second throttling element 214 is disposed between the second reversing valve 212 and the second end of the third heat exchange device 240. It can be understood that by setting the first throttling element 213 and the second throttling element 214, the first heat exchange medium in the heat exchange circulation loop formed by the first heat exchange unit 200 is throttled, thereby enabling the heat exchange system 10 to have multiple operating modes. The first throttling element 213 and / or the second throttling element 214 are electronic expansion valves.

[0109] Referring to Figure 15, in one embodiment, the third switching device 310 includes a third reversing valve 311 and a fourth reversing valve 312. The compression device 100 is connected to the first end of the fifth heat exchange channel 321, the first end of the sixth heat exchange device 330, and the first end of the seventh heat exchange device 340 via the third reversing valve 311. The second ends of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 are all connected to the fourth reversing valve 312.

[0110] It is understood that both the third directional valve 311 and the fourth directional valve 312 can be composed of multiple valve bodies or a single multi-way valve; the specific configuration is not limited here. For example, the third directional valve 311 may include a four-way directional valve and a three-way valve, and the fourth directional valve 312 may include a three-way valve. By setting the third directional valve 311 and the fourth directional valve 312, the flow direction of the first heat exchange medium in the heat exchange circulation loop formed by the second heat exchange unit 300 can be adjusted, so that the heat exchange system 10 can have multiple operating modes, thereby realizing multiple functions.

[0111] Furthermore, the third switching device 310 also includes a third throttling element 313 and a fourth throttling element 314. Both the third throttling element 313 and the fourth throttling element 314 are disposed on the heat exchange circulation loop formed by the second heat exchange unit 300. The third throttling element 313 is disposed between the fourth reversing valve 312 and the second end of the sixth heat exchange device 330, and the fourth throttling element 314 is disposed between the fourth reversing valve 312 and the second end of the seventh heat exchange device 340. It is understood that by setting the third throttling element 313 and the fourth throttling element 314, the first heat exchange medium in the heat exchange circulation loop formed by the second heat exchange unit 300 is throttled, thereby enabling the heat exchange system 10 to have multiple operating modes. The third throttling element 313 and / or the fourth throttling element 314 are electronic expansion valves.

[0112] Referring to Figure 15, in one embodiment, the heat exchange system 10 further includes a fourth switching device 400, wherein the first end of the third heat exchange device 240, the first end of the seventh heat exchange device 340, the first reversing valve 211, and the third reversing valve 311 are all connected to the fourth switching device 400; and / or, the heat exchange system 10 further includes a fifth switching device 500, wherein the second end of the third heat exchange device 240, the second end of the seventh heat exchange device 340, the second reversing valve 212, and the fourth reversing valve 312 are all connected to the fifth switching device 500.

[0113] It is understood that the fourth switching device 400 and the fifth switching device 500 can be composed of multiple valve bodies or a single multi-way valve. For example, the fourth switching device 400 includes a four-way directional valve, and the fifth switching device 500 includes a four-way directional valve. By setting the fourth switching device 400 and / or the fifth switching device 500, the two streams of first heat exchange medium with different pressures output from the compression device 100 can be switched in the third heat exchange device 240 and the seventh heat exchange device 340. For example, the compression device 100 outputs two first heat exchange media, one of which is a medium-pressure heat exchange medium and the other is a high-pressure heat exchange medium. The first switching device 210 controls the high-pressure heat exchange medium to flow through the third heat exchange device 240, and the third switching device 310 controls the medium-pressure heat exchange medium to flow through the seventh heat exchange device 340. By setting the fourth switching device 400 and / or the fifth switching device 500, the flow of the high-pressure heat exchange medium through the seventh heat exchange device 340 and the flow of the medium-pressure heat exchange medium through the third heat exchange device 240 can be switched, thereby allowing the high-pressure heat exchange medium and the medium-pressure heat exchange medium to switch directions in the third heat exchange device 240 and the seventh heat exchange device 340. The third heat exchange device 240 is the first indoor unit, and the seventh heat exchange device 340 is the second indoor unit. In other words, by setting the fourth switching device 400 and / or the fifth switching device 500, the flow direction of the high-pressure heat exchange medium and the medium-pressure heat exchange medium in the two indoor units can be switched to regulate the temperature of the two indoor units.

[0114] Referring to the embodiments in Figures 16 and 17, the heat exchange system 10 further has an eighth operating mode. In this eighth operating mode, the second reversing valve 212, the fifth switching device 500, the seventh heat exchange device 340, the fourth switching device 400, and the first reversing valve 211 are sequentially connected to form a first heat exchange branch, and a portion of the first heat exchange medium discharged by the compression device 100 flows through the first heat exchange branch; the fourth reversing valve 312, the fifth switching device 500, the third heat exchange device 240, the fourth switching device 400, and the third reversing valve 311 are sequentially connected to form a second heat exchange branch, and another portion of the first heat exchange medium discharged by the compression device 100 flows through the second heat exchange branch.

[0115] For ease of understanding, a portion of the first heat exchange medium discharged by the compression device 100 is now defined as the high-pressure heat exchange medium, another portion of the first heat exchange medium discharged by the compression device 100 is defined as the medium-pressure heat exchange medium, the third heat exchange device 240 is the first indoor unit, and the seventh heat exchange device 340 is the second indoor unit.

[0116] When the heat exchange system 10 is in use, the set temperature of the third heat exchange device 240 (first indoor unit) is a, and the set temperature of the seventh heat exchange device 340 (second indoor unit) is b. If a is greater than b, that is, the set temperature of the first indoor unit is greater than the set temperature of the second indoor unit, the high-pressure heat exchange medium flows through the first indoor unit along the heat exchange circulation loop formed by the first heat exchange unit 200 for heat exchange, and the medium-pressure heat exchange medium flows through the second indoor unit along the heat exchange circulation loop formed by the second heat exchange unit 300. The heat exchange temperature of the high-pressure heat exchange medium is greater than the heat exchange temperature of the medium-pressure heat exchange medium. The temperature is such that the heating capacity of the first indoor unit is greater than that of the second indoor unit, thus easily meeting the requirement that the set temperature of the first indoor unit is greater than that of the second indoor unit. The heat exchange capacity of the medium-pressure heat exchange medium and the high-pressure heat exchange medium discharged by the compression device 100 can be fully utilized. The first heat exchange medium discharged by the compression device 100 has high energy efficiency. Furthermore, there is a pressure difference between the first heat exchange medium in the two heat exchange circulation loops of the heat exchange system 10. This pressure difference design can reduce the pressure ratio of the compression device 100, thereby further improving the energy efficiency of the heat exchange system 10.

[0117] When the heat exchange system 10 is in use, the set temperature of the third heat exchange device 240 (first indoor unit) is a, and the set temperature of the seventh heat exchange device 340 (second indoor unit) is b. If a is less than b, that is, the set temperature of the second indoor unit is greater than the set temperature of the first indoor unit, the heat exchange system 10 operates in the eighth working mode. The high-pressure heat exchange medium and the medium-pressure heat exchange medium are switched via the fourth switching device 400 and / or the fifth switching device 500, so that the high-pressure heat exchange medium flows through the second indoor unit along the first heat exchange branch, and the medium-pressure heat exchange medium flows through the first indoor unit along the second heat exchange branch. The heat exchange temperature is higher than that of the medium-pressure heat exchange medium, which makes the heating capacity of the second indoor unit greater than that of the first indoor unit. This makes it easier to meet the requirement that the set temperature of the second indoor unit is higher than that of the first indoor unit. The heat exchange capacity of the medium-pressure heat exchange medium and the high-pressure heat exchange medium discharged from the compression device 100 can be fully utilized. The first heat exchange medium discharged from the compression device 100 has high energy efficiency. Furthermore, there is a pressure difference between the first heat exchange medium in the two heat exchange circulation loops of the heat exchange system 10. This pressure difference design can reduce the pressure ratio of the compression device 100, thereby further improving the energy efficiency of the heat exchange system 10.

[0118] Referring to Figure 8, in one embodiment, the compression device 100 has a first exhaust port 120, a second exhaust port 130, and an intake port 110. The first exhaust port 120 and the intake port 110 form a heat exchange loop with at least two of the first heat exchange channel 221, the second heat exchange device 230, and the third heat exchange device 240 via the first switching device 210. The second exhaust port 130 and the intake port 110 form the heat exchange loop with at least two of the fifth heat exchange channel 321, the sixth heat exchange device 330, and the seventh heat exchange device 340 via the third switching device 310.

[0119] It is understood that there is only one compression device 100. The first exhaust port 120 is independently connected to the heat exchange loop formed by the first heat exchange unit 200, and the second exhaust port 130 is independently connected to the heat exchange loop formed by the second heat exchange unit 300. The exhaust pressures of the first exhaust port 120 and the second exhaust port 130 of the compression device 100 can be the same or different, so that the pressure of the first heat exchange medium flowing into the two heat exchange loops can be the same or different, thereby meeting the needs of different working modes. This solution can form multiple loops with one compression device 100, enabling the heat exchange system 10 to have multiple working modes and realize multiple functions.

[0120] In one embodiment, the compression device 100 is a dual-cylinder dual-suction dual-exhaust compressor, and the intake port 110 includes a first sub-intake port 111 and a second sub-intake port 112. The first sub-intake port 111 is connected to the first switching device 210, and the second sub-intake port 112 is connected to the third switching device 310.

[0121] Understandably, in a dual-cylinder, dual-suction, dual-exhaust compressor, the first sub-suction port 111 and the second sub-suction port 112 return air independently, and their suction pressures can be the same or different; similarly, the first exhaust port 120 and the second exhaust port 130 discharge air independently, and their exhaust pressures can be the same or different, ensuring that the suction and exhaust of the two heat exchange cycle loops do not affect each other. This design utilizes the simultaneous operation of two compression cylinders, increasing the compressor's suction and exhaust volume, thereby enhancing the compression capacity of the compression device 100 and ultimately improving the energy efficiency of the heat exchange system 10.

[0122] This application also proposes a heat exchange device, which includes the heat exchange system 10 as described above. The specific structure of the heat exchange system 10 is as described in the above embodiments. Since this heat exchange device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The specific product type of the heat exchange device is not limited, as long as the heat exchange device can be used with the heat exchange system 10.

[0123] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A heat exchange system, wherein, The heat exchange system includes: Compression device; The first heat exchange unit includes a first switching device, a first heat exchange device, a second heat exchange device, and a third heat exchange device; the first heat exchange device has a first heat exchange channel and a second heat exchange channel, and the compression device is connected to the first heat exchange channel, the second heat exchange device, and the third heat exchange device via the first switching device; the first switching device is used to control the first heat exchange medium discharged by the compression device to flow through at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device to form a heat exchange circulation loop; The second heat exchange channel is used for the flow of the second heat exchange medium to exchange heat with the first heat exchange medium flowing through the first heat exchange channel.

2. The heat exchange system as described in claim 1, wherein, The heat exchange system further includes a first inlet pipe and a first outlet pipe, and the first inlet pipe, the second heat exchange channel and the first outlet pipe are connected in sequence to form a first heating flow path.

3. The heat exchange system as described in claim 2, wherein, The heat exchange system has a first working mode. In the first working mode, the first switching device controls the first heat exchange medium discharged by the compression device to flow through the first heat exchange channel and condense and release heat. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium flowing through the first heat exchange channel before being discharged to the outside of the first heating flow path.

4. The heat exchange system as described in claim 3, wherein, The heat exchange system further includes a fourth heat exchange device, which has a third heat exchange channel and a fourth heat exchange channel. The third heat exchange channel is connected to the first liquid outlet pipe. The third heat exchange channel is used to supply the second heat exchange medium to flow through, and the fourth heat exchange channel is used to supply water to flow through, so as to exchange heat with the second heat exchange medium flowing through the third heat exchange channel.

5. The heat exchange system as described in claim 4, wherein, The heat exchange system further includes a second inlet pipe and a second outlet pipe, and the second inlet pipe, the fourth heat exchange channel and the second outlet pipe are connected in sequence to form a second heating flow path.

6. The heat exchange system as described in claim 5, wherein, The heat exchange system also has a second working mode. In the second working mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium. After flowing through the third heat exchange channel, it is discharged to the outside of the first heating flow path. The water flowing through the fourth heat exchange channel absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel and flows out to the outside of the second heating flow path.

7. The heat exchange system as described in claim 5, wherein, The heat exchange system also includes a second switching device, wherein the first liquid outlet pipe located downstream of the third heat exchange channel is connected to the first liquid inlet pipe via the second switching device to form a medium circulation loop.

8. The heat exchange system as described in claim 7, wherein, The heat exchange system also has a third working mode. In the third working mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The second switching device controls the second heat exchange medium to circulate in the medium circulation loop. The second heat exchange medium flows through the second heat exchange channel and absorbs the heat released by the first heat exchange medium. The water flowing through the fourth heat exchange channel absorbs the heat of the second heat exchange medium flowing through the third heat exchange channel and then flows out of the second heating flow path.

9. The heat exchange system as claimed in claim 1, wherein, The heat exchange system also has a fourth operating mode. In the fourth operating mode, the first switching device controls the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel to condense and release heat, and then flow through the second or third heat exchange device to evaporate and absorb heat before returning to the compression device.

10. The heat exchange system according to any one of claims 1 to 9, wherein, The heat exchange system further includes a second heat exchange unit, which is connected to the compression device to form a heat exchange circulation loop.

11. The heat exchange system as claimed in claim 10, wherein, The second heat exchange unit includes a third switching device, a fifth heat exchange device, and a sixth heat exchange device; the fifth heat exchange device has a fifth heat exchange channel and a sixth heat exchange channel; the third switching device is used to control the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel and the sixth heat exchange device to form a heat exchange circulation loop; the sixth heat exchange channel is connected to the second heat exchange channel, and the sixth heat exchange channel is used to allow the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel.

12. The heat exchange system as claimed in claim 10, wherein, The second heat exchange unit includes a third switching device, a fifth heat exchange device, a sixth heat exchange device, and a seventh heat exchange device. The fifth heat exchange device has a fifth heat exchange channel and a sixth heat exchange channel. The compression device is connected to the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device via the third switching device. The third switching device is used to control the first heat exchange medium discharged from the compression device to flow through at least two of the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device to form a heat exchange circulation loop. The sixth heat exchange channel is connected to the second heat exchange channel and is used for the second heat exchange medium to flow through, so as to exchange heat with the first heat exchange medium flowing through the fifth heat exchange channel.

13. The heat exchange system as claimed in claim 12, wherein, The heat exchange system also has a fifth working mode. In the fifth working mode, the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the second heat exchange device to condense and release heat; the third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel to condense and release heat, and to flow through the sixth heat exchange device to evaporate and absorb heat. Alternatively, in the fifth operating mode, the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel to condense and release heat, and to flow through the second heat exchange device to evaporate and absorb heat; the third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the sixth heat exchange device to condense and release heat.

14. The heat exchange system as claimed in claim 12, wherein, The heat exchange system also has a sixth operating mode. In the sixth operating mode, the compression device is connected to the second and third heat exchange devices via the first switching device to form a heat exchange loop; the compression device is connected to the sixth and seventh heat exchange devices via the third switching device to form a heat exchange loop; the first heat exchange medium flows through one of the third and seventh heat exchange devices, where it condenses and releases heat, and the other evaporates and absorbs heat.

15. The heat exchange system as claimed in claim 12, wherein, The heat exchange system also has a seventh operating mode. In the seventh operating mode, the first switching device controls a portion of the first heat exchange medium discharged from the compression device to flow through the first heat exchange channel and condense and release heat. The third switching device controls another portion of the first heat exchange medium discharged from the compression device to flow through the fifth heat exchange channel and condense and release heat. The second heat exchange medium flows through the sixth heat exchange channel and the second heat exchange channel, both of which absorb the heat released by the first heat exchange medium.

16. The heat exchange system as claimed in claim 15, wherein, In the seventh operating mode, the sixth heat exchange channel is located upstream of the second heat exchange channel along the flow direction of the second heat exchange medium, and the pressure of the first heat exchange medium flowing into the fifth heat exchange channel is less than the pressure of the first heat exchange medium flowing into the first heat exchange channel.

17. The heat exchange system of claim 16, wherein, The compression device has a first exhaust port and a second exhaust port. The first exhaust port is connected to the first switching device, and the second exhaust port is connected to the third switching device. In the seventh working mode, the exhaust pressure of the first exhaust port is less than the exhaust pressure of the second exhaust port.

18. The heat exchange system of claim 12, wherein, The first switching device includes a first reversing valve and a second reversing valve. The compression device is connected to the first end of the first heat exchange channel, the first end of the second heat exchange device, and the first end of the third heat exchange device via the first reversing valve. The second end of the first heat exchange channel, the second end of the second heat exchange device, and the second end of the third heat exchange device are all connected to the second reversing valve.

19. The heat exchange system as claimed in claim 18, wherein, The third switching device includes a third reversing valve and a fourth reversing valve. The compression device is connected to the first end of the fifth heat exchange channel, the first end of the sixth heat exchange device, and the first end of the seventh heat exchange device via the third reversing valve. The second end of the fifth heat exchange channel, the second end of the sixth heat exchange device, and the second end of the seventh heat exchange device are all connected to the fourth reversing valve.

20. The heat exchange system as claimed in claim 19, wherein, The heat exchange system further includes a fourth switching device, wherein the first end of the third heat exchange device, the first end of the seventh heat exchange device, the first reversing valve, and the third reversing valve are all connected to the fourth switching device; And / or, the heat exchange system further includes a fifth switching device, wherein the second end of the third heat exchange device, the second end of the seventh heat exchange device, the second reversing valve and the fourth reversing valve are all connected to the fifth switching device.

21. The heat exchange system as claimed in claim 20, wherein, The heat exchange system also has an eighth operating mode. In the eighth operating mode, the second reversing valve, the fifth switching device, the seventh heat exchange device, the fourth switching device, and the first reversing valve are sequentially connected to form a first heat exchange branch, and a portion of the first heat exchange medium discharged by the compression device flows through the first heat exchange branch; the fourth reversing valve, the fifth switching device, the third heat exchange device, the fourth switching device, and the third reversing valve are sequentially connected to form a second heat exchange branch, and another portion of the first heat exchange medium discharged by the compression device flows through the second heat exchange branch.

22. The heat exchange system according to any one of claims 12 to 21, wherein, The compression device has a first exhaust port, a second exhaust port, and an intake port. The first exhaust port and the intake port form a heat exchange loop with at least two of the first heat exchange channel, the second heat exchange device, and the third heat exchange device via the first switching device. The second exhaust port and the intake port form the heat exchange loop with at least two of the fifth heat exchange channel, the sixth heat exchange device, and the seventh heat exchange device via the third switching device.

23. The heat exchange system as claimed in claim 22, wherein, The compression device is a dual-cylinder, dual-suction, dual-exhaust compressor. The intake port includes a first sub-intake port and a second sub-intake port. The first sub-intake port is connected to the first switching device, and the second sub-intake port is connected to the third switching device.

24. A heat exchange device, wherein, The heat exchange device includes the heat exchange system as described in any one of claims 1 to 23.

Images