Heat exchange system

Abstract

The utility model relates to the technical field of air conditioning, and discloses a heat exchange system. The heat exchange system comprises a water circulation system and a refrigerant circulation system, the water circulation system comprises a heat dissipation module, and the refrigerant circulation system comprises an outdoor unit; the water side of the water-fluorine heat exchanger is communicated with the heat dissipation module through a water circulation pipeline, the refrigerant side of the water-fluorine heat exchanger is communicated with the outdoor unit through a refrigerant pipeline, the water circulation pipeline comprises a third pipeline and a fourth pipeline, and the third pipeline is communicated with a water inlet in the water side of the water-fluorine heat exchanger; the fourth pipeline is communicated with a water outlet in the water side of the water-fluorine heat exchanger; the first valve is arranged on the third pipeline and used for controlling connection or disconnection between the third pipeline and the water side of the water-fluorine heat exchanger; the second valve is arranged on the fourth pipeline and used for controlling connection or disconnection between the fourth pipeline and the water side of the water-fluorine heat exchanger. When leakage occurs, only the two valves need to be closed, and equipment and suspended ceilings of all heat exchange systems do not need to be replaced, so that the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning, for example, to a heat exchange system. Background Art

[0002] Currently, with the improvement of living standards, heat exchange systems with water systems are also favored by more and more families. A heat exchange system with a water system needs to use a water-fluorine heat exchanger. The water-fluorine heat exchanger usually has a high heat exchange efficiency, can meet the usage requirements of a large area, and the refrigerant flowing through the cooling and heating terminals is water. Water has a large specific heat capacity and can absorb or release a large amount of heat at a small temperature difference, making the use of the heat exchange system safer.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0004] After the water-fluorine heat exchanger leaks, the entire water-fluorine system is damaged, and all the equipment and ceiling of the heat exchange system need to be replaced, resulting in a high maintenance cost and great property losses to users.

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

[0006] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0007] The embodiments of the present disclosure provide a heat exchange system that can quickly handle the leakage of the water-fluorine heat exchanger and prevent losses to users caused by the damage of the water-fluorine heat exchanger.

[0008] The embodiments of the present disclosure provide a heat exchange system. The heat exchange system includes a water circulation system and a refrigerant circulation system. The water circulation system includes a heat dissipation module. The refrigerant circulation system includes: an outdoor unit; a water-fluorine heat exchanger. The water side of the water-fluorine heat exchanger is connected to the heat dissipation module through a water circulation pipeline. The refrigerant side of the water-fluorine heat exchanger and the outdoor unit are connected through a refrigerant pipeline. The water circulation pipeline includes a third pipeline and a fourth pipeline. The third pipeline is connected to the water inlet of the water side of the water-fluorine heat exchanger, and the fourth pipeline is connected to the water outlet of the water side of the water-fluorine heat exchanger; a first valve is provided on the third pipeline for controlling the connection or disconnection between the third pipeline and the water side of the water-fluorine heat exchanger; a second valve is provided on the fourth pipeline for controlling the connection or disconnection between the fourth pipeline and the water side of the water-fluorine heat exchanger.

[0009] Optionally, a drain port is provided on the third pipeline and / or the water side of the water-fluorine heat exchanger, and the drain port is used to drain the water on the water side of the water-fluorine heat exchanger to the outside; the heat exchange system further includes: a drain valve, provided at the drain port, for opening or closing the drain port.

[0010] Optionally, the refrigerant pipeline includes: a first pipeline, one end of which is connected to the refrigerant side of the water-fluorine heat exchanger and the other end is connected to the outdoor unit; a first electronic expansion valve, provided on the first pipeline.

[0011] Optionally, the heat exchange system further includes: a detection device, for detecting whether the water-fluorine heat exchanger leaks; a controller, electrically connected to the detection device, the first valve, the second valve, the first electronic expansion valve and the drain valve, and the controller is configured to control the first valve, the second valve and the first electronic expansion valve to close and control the drain valve to open when the water-fluorine heat exchanger leaks.

[0012] Optionally, the detection device includes: a first pressure sensor, provided on the refrigerant side of the water-fluorine heat exchanger, for detecting the pressure on the refrigerant side of the water-fluorine heat exchanger; the first pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger leaks when the pressure on the refrigerant side of the water-fluorine heat exchanger is less than the pressure threshold, and control the first valve, the second valve and the first electronic expansion valve to close and control the drain valve to open; and / or, the detection device includes: a second pressure sensor, provided on the water side of the water-fluorine heat exchanger, for detecting the pressure on the water side of the water-fluorine heat exchanger; the second pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger leaks when the pressure of the water in the water-fluorine heat exchanger is less than the initial water injection pressure, control the first valve, the second valve and the first electronic expansion valve to close, and control the drain valve to open.

[0013] Optionally, the detection device includes: a flow rate detection device, for detecting the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger; the flow rate detection device is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger leaks when the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger is less than or equal to the flow rate threshold, and control the first valve, the second valve and the first electronic expansion valve to close and control the drain valve to open.

[0014] Optionally, the refrigerant circulation system further includes: a compressor; a first four-way valve, the first port of the first four-way valve is connected to the exhaust port of the compressor, the second port of the first four-way valve is connected to the refrigerant side, the third port of the first four-way valve is connected to the outdoor unit, and the fourth port of the first four-way valve is connected to the intake port of the compressor; wherein, the first four-way valve and the controller are both electrically connected, and the controller is configured to control the first port of the first four-way valve to be connected to the second port of the first four-way valve and the third port of the first four-way valve to be connected to the fourth port of the first four-way valve when the water-fluorine heat exchanger leaks.

[0015] Optionally, the water circulation system further includes: an inlet water pipe, connected between the water outlet of the water side of the water-to-fluorine heat exchanger and the water inlet of the heat dissipation module; an outlet water pipe, connected between the water inlet of the water side of the water-to-fluorine heat exchanger and the water outlet of the heat dissipation module; a bypass pipe, connected between the inlet water pipe and the outlet water pipe; a bypass valve, provided on the bypass pipe for controlling the opening degree of the bypass pipe.

[0016] Optionally, the water circulation pipe further includes: a make-up water pipe, one end of which is connected to the outlet water pipe and the other end is connected to an external water source; a make-up water valve, provided on the make-up water pipe for controlling the opening degree of the make-up water pipe.

[0017] Optionally, the water circulation system further includes: a water tank, provided on the outlet water pipe and located between one end of the make-up water pipe and the water inlet of the water side of the water-to-fluorine heat exchanger; a filter, provided on the make-up water pipe and / or the outlet water pipe and located between the water tank and the water side of the water-to-fluorine heat exchanger.

[0018] The heat exchange system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] In the heat exchange system of the embodiments of the present disclosure, the water side of the water-to-fluorine heat exchanger is connected to the heat dissipation module through a water circulation pipe. In this way, when the heat exchange system is heating, the hot water after heat exchange by the water-to-fluorine heat exchanger can flow to the heat dissipation module and then dissipate heat in the heat dissipation module, which can be used for heating or providing hot water. The refrigerant side of the water-to-fluorine heat exchanger is connected to the indoor unit through a refrigerant pipe, and the high-temperature refrigerant can flow to the refrigerant side of the water-to-fluorine heat exchanger to exchange heat with the water side and heat the water on the water side. Valves are provided at both the inlet and outlet of the water side of the water-to-fluorine heat exchanger. The first valve can control the on-off of the water inlet of the water side, and the second valve can control the on-off of the water outlet. When the water-to-fluorine heat exchanger leaks, the first valve and the second valve are closed, which can avoid continuous water inlet on the water side. Moreover, after the water side is disconnected from the external water circulation pipe, there is no external power on the water side of the water-to-fluorine heat exchanger and the pressure decreases. If there is refrigerant flowing on the refrigerant side, the relatively high pressure can prevent water from flowing into the refrigerant side. If the refrigerant side is closed, it can also prevent water from flowing into other components along the refrigerant side. In this way, the water on the water side of the water-to-fluorine heat exchanger cannot flow to other components and cause damage to the entire heat exchange system. In this way, when a leak occurs, only two valves need to be closed, and other components will not be damaged. There is no need to replace all the equipment and ceiling of the heat exchange system, which reduces the maintenance cost and protects the property safety of users.

[0020] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic structural diagram of a heat exchange system provided by an embodiment of the present disclosure;

[0023] Figure 2 is a schematic partial structural diagram of a heat exchange system provided by an embodiment of the present disclosure;

[0024] Figure 3 is a schematic partial structural diagram of another heat exchange system provided by an embodiment of the present disclosure;

[0025] Figure 4 is a schematic structural diagram of another heat exchange system provided by an embodiment of the present disclosure;

[0026] Figure 5 is a schematic partial structural diagram of another heat exchange system provided by an embodiment of the present disclosure;

[0027] Figure 6 is a schematic structural diagram of another heat exchange system provided by an embodiment of the present disclosure;

[0028] Figure 7 is a schematic partial structural diagram of another heat exchange system provided by an embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 10, compressor; 11, oil separator; 12, gas-liquid separator; 13, first four-way valve; 14, second four-way valve; 20, water-fluorine heat exchanger; 21, first pipeline; 22, second pipeline; 23, third pipeline; 24, fourth pipeline; 25, first electronic expansion valve; 26, second electronic expansion valve; 27, first valve; 28, second valve; 29, drain valve; 30, outdoor unit; 31, second throttling device; 32, fifth pipeline; 33, sixth pipeline; 34, heat exchange device; 341, first throttling device; 40, indoor unit; 41, liquid inlet pipeline; 42, gas outlet pipeline; 43, liquid pipe stop valve; 44, gas pipe stop valve; 50, heat dissipation module; 51, water collector; 52, water distributor; 53, water inlet pipeline; 531, water inlet stop valve; 54, water outlet pipeline; 541, water outlet stop valve; 55, bypass pipeline; 551, bypass valve; 56, make-up water pipeline; 561, make-up water valve; 562, stop valve; 57, water tank; 571, filter; 58, water pump; 581, first drain valve; 582, second drain valve; 583, water pressure gauge. Detailed embodiments

[0031] In order to more comprehensively understand the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and explanation, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0032] In the embodiments of the present disclosure, terms such as "first" and "second" in the description and claims of the embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0033] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "rear" is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0034] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] Unless otherwise specified, the term "plurality" means two or more.

[0036] The term "and / or" is a description of the associated relationship of an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B these three relationships.

[0037] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0038] Combined Figures 1 to 7 As shown, an embodiment of the present disclosure provides a heat exchange system. The heat exchange system includes a refrigerant circulation system and a water circulation system. The water circulation system includes a heat dissipation module 50. The refrigerant circulation system includes an indoor unit 40 and a water-to-refrigerant heat exchanger 20. The water-to-refrigerant heat exchanger 20 includes a water side and a refrigerant side that exchange heat with each other. The water side of the water-to-refrigerant heat exchanger 20 is connected to the heat dissipation module 50 through a water circulation pipeline, and the refrigerant side of the water-to-refrigerant heat exchanger 20 and the indoor unit 40 are connected through a refrigerant pipeline.

[0039] The refrigerant circulation system includes a compressor 10, a four-way valve, an outdoor unit 30, a throttling device, and an indoor unit assembly that are sequentially connected through a refrigerant pipeline. The outdoor unit 30 includes an outdoor heat exchanger. The indoor unit assembly includes an indoor unit 40 and a water-to-refrigerant heat exchanger 20. The indoor unit 40 includes an indoor heat exchanger. The outdoor unit 30 is connected to the refrigerant side of the water-to-refrigerant heat exchanger 20 and the indoor unit 40 through a refrigerant pipeline to form a refrigerant circulation loop.

[0040] Optionally, the water-to-refrigerant heat exchanger 20 can be installed indoors or outdoors.

[0041] As Figures 1 to 7 shown, the first port of the four-way valve is defined as port d, the second port of the four-way valve is defined as port e, the third port of the four-way valve is defined as port c, and the fourth port of the four-way valve is defined as port s.

[0042] When the heat exchange system is heating, the de of the four-way valve is connected, and the cs is connected. The high-temperature and high-pressure refrigerant flowing out of the compressor 10 flows from port d of the four-way valve to port e, and then enters the indoor unit assembly. After condensing and dissipating heat in the indoor unit 40, it flows through the throttling device and then flows into the outdoor unit 30. After evaporating in the outdoor unit 30, it flows from port c of the four-way valve to port s, and then flows back into the compressor 10.

[0043] When the heat exchange system is cooling, the dc of the four-way valve is connected, and the es is connected. The high-temperature and high-pressure refrigerant flowing out of the compressor 10 flows from port d of the four-way valve to port c, and then enters the outdoor unit 30. After condensing and dissipating heat in the outdoor unit 30, it flows through the throttling device and then flows into the indoor unit assembly. After evaporating in the indoor unit assembly, it flows from port e of the four-way valve to port s, and then returns to the compressor 10.

[0044] Optionally, the four-way valve includes a first four-way valve 13. The first port of the first four-way valve 13 is connected to the exhaust port of the compressor 10. The second port of the first four-way valve 13 is connected to the refrigerant side. The third port of the first four-way valve 13 is connected to the outdoor heat exchanger. The fourth port of the first four-way valve 13 is connected to the intake port of the compressor 10.

[0045] In the embodiments of the present disclosure, the first four-way valve 13 can realize the flow path switching during refrigeration and heating of the water-fluorine heat exchanger 20 and the outdoor heat exchanger. The first port of the first four-way valve 13 is port d, the second port is port e, the third port is port c, and the fourth port is port s. When the heat exchange system is in heating mode, the high-temperature and high-pressure refrigerant flowing out from the exhaust port of the compressor 10 flows through port d of the first four-way valve 13 to port e of the first four-way valve 13, then passes through the water-fluorine heat exchanger 20 and the throttling device and flows into the outdoor heat exchanger. After flowing out from the outdoor heat exchanger, it flows from port c of the first four-way valve 13 to port s of the first four-way valve 13, and then flows back into the compressor 10. When the heat exchange system is in refrigeration mode, the high-temperature and high-pressure refrigerant flowing out from the exhaust port of the compressor 10 flows through port d of the first four-way valve 13 to port c of the first four-way valve 13 and flows into the outdoor unit 30. Then it flows out from the outdoor unit 30, is throttled and flows back to the refrigerant side, then flows into the first four-way valve 13 through port e of the first four-way valve 13, and then flows back into the compressor 10 from port s of the first four-way valve 13.

[0046] Optionally, the heat exchange system further includes a second four-way valve 14. The first port of the second four-way valve 14 is communicated with the exhaust port of the compressor 10, the second port is communicated with the refrigerant inlet of the indoor heat exchanger, the third port is communicated with the refrigerant outlet of the outdoor heat exchanger, and the fourth port is communicated with the intake port of the compressor 10.

[0047] In the embodiments of the present disclosure, the second four-way valve 14 can realize the flow path switching during refrigeration and heating of the indoor heat exchanger and the outdoor heat exchanger. The first port of the second four-way valve 14 is port d, the second port is port e, the third port is port c, and the fourth port is port s. When the heat exchange system is in heating mode, the high-temperature and high-pressure refrigerant flowing out from the exhaust port of the compressor 10 flows through port d of the second four-way valve 14 to port e of the second four-way valve 14, then passes through the indoor heat exchanger and the throttling device and flows into the outdoor heat exchanger. After flowing out from the outdoor heat exchanger, it flows from port c of the second four-way valve 14 to port s of the second four-way valve 14, and then flows back into the compressor 10. When the heat exchange system is in refrigeration mode, the high-temperature and high-pressure refrigerant flowing out from the exhaust port of the compressor 10 flows through port d of the second four-way valve 14 to port c of the second four-way valve 14 and flows into the outdoor unit 30. Then it flows out from the outdoor unit 30, is throttled and flows back to the indoor unit 40, then flows into the second four-way valve 14 through port e of the second four-way valve 14, and then flows back into the compressor 10 from port s of the second four-way valve 14.

[0048] Optionally, the refrigerant pipeline includes a first pipeline 21 and a second pipeline 22. The first pipeline 21 is communicated with one end of the refrigerant side of the water-fluorine heat exchanger 20, and the second pipeline 22 is communicated with the other end of the refrigerant side of the water-fluorine heat exchanger 20.

[0049] In some alternative embodiments, as Figures 1 to 3 shown, the heat exchange system further includes a first electronic expansion valve 25 and a second electronic expansion valve 26. The first electronic expansion valve 25 is arranged in the first pipeline 21 and is used to control the connection or disconnection between the first pipeline 21 and the refrigerant side of the water-fluorine heat exchanger 20; the second electronic expansion valve 26 is arranged in the second pipeline 22 and is used to control the connection or disconnection between the second pipeline 22 and the refrigerant side of the water-fluorine heat exchanger 20.

[0050] In the embodiments of the present disclosure, pipelines are provided at both the inlet and outlet of the water-fluorine heat exchanger 20, and electronic expansion valves are provided in the pipelines at both the inlet and outlet. In this way, both the inlet and outlet of the refrigerant side of the water-fluorine heat exchanger 20 can be controllably closed or opened. When the water-fluorine heat exchanger 20 leaks, both the first electronic expansion valve 25 and the second electronic expansion valve 26 can be closed. This can prevent the water on the water side from flowing into the refrigerant side and then flowing into the outdoor unit 30 along the refrigerant side pipeline, avoiding damage to the entire heat exchange system caused by the leakage of the water-fluorine heat exchanger 20. In this case, only the water-fluorine heat exchanger 20 needs to be repaired or replaced, and there is no need to disassemble the entire heat exchange system or the ceiling, greatly reducing the maintenance cost and improving the user experience.

[0051] Optionally, the second pipeline 22 is communicated between the second port of the first four-way valve 13 and the refrigerant side, and the first pipeline 21 is communicated between the other end of the refrigerant side and the outdoor unit 30. In this way, the first electronic expansion valve 25 can throttle the refrigerant in the first pipeline 21.

[0052] Optionally, when the heat exchange system is in heating mode, the high-temperature and high-pressure refrigerant flowing out of the compressor 10 flows through the first four-way valve 13 and the second pipeline 22 to the refrigerant side of the water-fluorine heat exchanger 20. The refrigerant flowing out of the refrigerant side is throttled by the first electronic expansion valve 25 and then flows into the outdoor unit 30.

[0053] Optionally, the water circulation pipeline includes a third pipeline 23 and a fourth pipeline 24. The third pipeline 23 is communicated with the water inlet of the water side of the water-fluorine heat exchanger 20, and the fourth pipeline 24 is communicated with the water drain of the water side of the water-fluorine heat exchanger 20.

[0054] In the embodiments of the present disclosure, the water in the water circulation system flows into the water side of the water-fluorine heat exchanger 20 through the third pipeline 23, exchanges heat with the refrigerant side on the water side, and then flows out through the fourth pipeline 24.

[0055] Optionally, the inlet of the third pipeline 23 communicates with the outlet of the heat dissipation module 50, and the outlet of the fourth pipeline 24 communicates with the inlet of the heat dissipation module 50. In this way, the water after heat exchange in the water-fluorine heat exchanger 20 flows along the fourth pipeline 24 into the heat dissipation module 50, is dissipated in the heat dissipation module 50, and then flows back into the water-fluorine heat exchanger 20 through the third pipeline 23 for heat exchange.

[0056] Optionally, a drain port is provided on the water side of the third pipeline 23 and / or the water-fluorine heat exchanger 20, and the drain port is used to drain the water on the water side of the water-fluorine heat exchanger 20 to the outside; the heat exchange system further includes a drain valve 29, and the drain valve 29 is provided at the drain port for opening or closing the drain port.

[0057] In the embodiment of the present disclosure, the water in the water-fluorine heat exchanger 20 can be discharged through the drain port. In this way, when the water-fluorine heat exchanger 20 leaks, the drain valve 29 can be opened to drain the water on the water side in the water-fluorine heat exchanger 20, which can prevent the water from leaking towards the refrigerant side, and further prevent the water from flowing to the outdoor unit 30 or other components through the refrigerant side.

[0058] Optionally, the heat exchange system includes a controller, and the controller is electrically connected to the first electronic expansion valve 25 and the second electronic expansion valve 26. The controller is configured to be able to control the opening degrees of the first electronic expansion valve 25 and the second electronic expansion valve 26.

[0059] Optionally, the controller is electrically connected to the drain valve 29, and the controller is configured to control the opening and closing of the drain valve 29.

[0060] Optionally, the heat exchange system further includes a detection device, and the detection device is used to detect the leakage information of the water-fluorine heat exchanger 20 to determine whether the water-fluorine heat exchanger 20 leaks.

[0061] Optionally, when the heat exchange system includes the first electronic expansion valve 25 and the second electronic expansion valve 26, the controller is electrically connected to the detection device, the first electronic expansion valve 25, the second electronic expansion valve 26, and the drain valve 29. The controller is configured to control the opening and closing of the first electronic expansion valve 25, the second electronic expansion valve 26, and the drain valve 29 according to the leakage information of the water-fluorine heat exchanger 20. When the water-fluorine heat exchanger 20 leaks, the controller controls the first electronic expansion valve 25 and the second electronic expansion valve 26 to close and controls the drain valve 29 to open.

[0062] In the embodiment of the present disclosure, the heat exchange system is provided with a detection device, and the detection device can detect the leakage information of the water-fluorine heat exchanger 20, thereby determining whether the water-fluorine heat exchanger 20 leaks, and then controlling the opening and closing of the first electronic expansion valve 25, the second electronic expansion valve 26, and the drain valve 29 according to the leakage situation.

[0063] Optionally, the detection device includes a first pressure sensor disposed on the refrigerant side of the water-fluorine heat exchanger 20 for detecting the pressure on the refrigerant side of the water-fluorine heat exchanger 20. The leakage information includes the pressure on the refrigerant side of the water-fluorine heat exchanger 20. The first pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 leaks when the pressure on the refrigerant side of the water-fluorine heat exchanger 20 is less than the pressure threshold, control the first electronic expansion valve 25 and the second electronic expansion valve 26 to close, and control the drain valve 29 to open.

[0064] In the embodiments of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the amount of refrigerant on the refrigerant side will decrease, and the pressure on the refrigerant side will also drop. Moreover, the leakage will cause an obvious pressure change. Therefore, by using the first pressure sensor to detect the pressure on the refrigerant side of the water-fluorine heat exchanger 20 in real time, when the pressure on the refrigerant side is less than the pressure threshold, the controller controls both the first electronic expansion valve 25 and the second electronic expansion valve 26 to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. At the same time, the controller controls the drain valve 29 to open to drain the water on the water side. This can timely determine whether the water-fluorine heat exchanger 20 leaks and can quickly handle it to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0065] Exemplarily, the pressure threshold is 0.4 Mpa.

[0066] Optionally, the detection device includes a second pressure sensor disposed on the water side of the water-fluorine heat exchanger 20 for detecting the pressure on the water side of the water-fluorine heat exchanger 20. The leakage information includes the pressure on the water side of the water-fluorine heat exchanger 20 detected. The second pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 leaks when the pressure of the water in the water-fluorine heat exchanger 20 is less than the initial water injection pressure, control the first electronic expansion valve 25 and the second electronic expansion valve 26 to close, and control the drain valve 29 to open.

[0067] In the embodiments of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the water on the water side of the water-fluorine heat exchanger 20 will also decrease, which will cause the pressure on the water side to decrease. The second pressure sensor can detect the pressure on the water side of the water-fluorine heat exchanger 20 in real time. When the pressure on the water side is less than the initial water injection pressure, it indicates that the water-fluorine heat exchanger 20 leaks. At this time, the controller controls both the first electronic expansion valve 25 and the second electronic expansion valve 26 to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. At the same time, the controller controls the drain valve 29 to open to drain the water on the water side. This can timely determine whether the water-fluorine heat exchanger 20 leaks and can quickly handle it to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0068] Exemplarily, the initial water injection pressure is 0.05 Mpa.

[0069] Optionally, the detection device includes a flow detection device for detecting the flow rate on the water side and / or the refrigerant side of the water-fluorine heat exchanger 20. The leakage information includes the flow rate on the water side and / or the refrigerant side of the water-fluorine heat exchanger 20. The flow detection device is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 is leaking when the flow rate on the water side and / or the refrigerant side of the water-fluorine heat exchanger 20 is less than or equal to a flow rate threshold, control the first electronic expansion valve 25 and the second electronic expansion valve 26 to close, and control the drain valve 29 to open.

[0070] In the embodiment of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the flow rate on the water side and / or the refrigerant side of the water-fluorine heat exchanger 20 will decrease. When the flow detection device detects that the flow rate on the water side and / or the refrigerant side of the water-fluorine heat exchanger is less than or equal to the flow rate threshold, it indicates that the water-fluorine heat exchanger 20 is leaking. The controller controls both the first electronic expansion valve 25 and the second electronic expansion valve 26 to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. At the same time, the controller controls the drain valve 29 to open to drain the water on the water side. This can timely determine whether the water-fluorine heat exchanger 20 leaks and can quickly handle it to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0071] Optionally, the first four-way valve 13 and the second four-way valve 14 are both electrically connected to the controller, and the controller is configured to control the flow direction of the refrigerant in the first four-way valve 13 and the second four-way valve 14 according to the leakage information of the water-fluorine heat exchanger 20 to enable the heat exchange system to switch between heating and cooling modes.

[0072] In the embodiment of the present disclosure, the setting of the first four-way valve 13 and the second four-way valve 14 enables the heat exchange system to switch between cooling and heating modes. When the detection device detects that the water-fluorine heat exchanger 20 leaks, the flow direction of the refrigerant in the first four-way valve 13 and the second four-way valve 14 is controlled to enable the heat exchange system to switch modes and adjust the pressures on the water side and the refrigerant side to prevent water from flowing into the refrigerant system.

[0073] Optionally, when the first pipeline 21 is provided with the first electronic expansion valve 25 and the second pipeline 22 is provided with the second electronic expansion valve 26, the first four-way valve 13 is electrically connected to the controller, and the controller is configured to control the first four-way valve 13 to close and the second four-way valve 14 to operate when the water-fluorine heat exchanger 20 leaks, so that the heat exchange system switches to cooling or heating of the indoor heat exchanger.

[0074] In the embodiments of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the first four-way valve 13 closes, so that the heat exchange system no longer delivers refrigerant to the water-fluorine heat exchanger 20. At the same time, the second four-way valve 14 is controlled to operate, and the second four-way valve 14 can switch the connected ports to enable the indoor heat exchanger to refrigerate or heat. In this way, whether the indoor heat exchanger refrigerates or heats, the pressure of the outdoor unit 30 can be made greater than that of the water-fluorine heat exchanger 20, avoiding the refrigerant or water flow of the water-fluorine heat exchanger 20 to the outdoor unit 30.

[0075] In some other alternative embodiments, such as Figure 3 、 Figure 4 and Figure 5 shown, the heat exchange system further includes a first valve 27 and a second valve 28. The first valve 27 is arranged on the third pipeline 23, and the first valve 27 is used to control the connection or disconnection between the third pipeline 23 and the water side of the water-fluorine heat exchanger 20; the second valve 28 is arranged on the fourth pipeline 24, and the second valve 28 is used to control the connection or disconnection between the fourth pipeline 24 and the water side of the water-fluorine heat exchanger 20.

[0076] In the embodiments of the present disclosure, valves are provided at both the inlet and outlet of the water side of the water-fluorine heat exchanger 20. The first valve 27 can control the on-off of the water inlet of the water side, and the second valve 28 can control the on-off of the water outlet of the water side. When the water-fluorine heat exchanger 20 leaks, the first valve 27 and the second valve 28 close, which can avoid the continuous inflow of water on the water side. Moreover, after the water side is disconnected from the external water circulation pipeline, there is no external power on the water side of the water-fluorine heat exchanger 20, and the pressure decreases. If there is refrigerant flowing on the refrigerant side, the pressure is relatively high and can prevent water from flowing into the refrigerant side. If the refrigerant side is closed, it can also prevent water from flowing along the refrigerant side into other components. In this way, the water on the water side of the water-fluorine heat exchanger 20 cannot flow to other components, causing damage to the entire heat exchange system. In this way, when a leak occurs, only two valves need to be closed, and other components will not be damaged. There is no need to replace all the equipment and ceiling of the heat exchange system, reducing the maintenance cost and protecting the property safety of users.

[0077] Optionally, the first valve 27 is an electric ball valve.

[0078] Optionally, the second valve 28 is an electric ball valve.

[0079] Optionally, a first electronic expansion valve 25 is provided in the first pipeline 21 of the heat exchange system, a first valve 27 is provided in the third pipeline 23, a second valve 28 is provided in the fourth pipeline 24, and when a drain valve 29 is provided on the water side of the water-fluorine heat exchanger 20 and / or in the third pipeline 23, the controller is electrically connected to the detection device, the first valve 27, the second valve 28, the first electronic expansion valve 25, and the drain valve 29. The controller is configured to control the opening and closing of the first valve 27, the second valve 28, the first electronic expansion valve 25, and the drain valve 29 according to the leakage information of the water-fluorine heat exchanger 20. Specifically, when the water-fluorine heat exchanger 20 leaks, the controller controls the first valve 27, the second valve 28, and the first electronic expansion valve 25 to close, and controls the drain valve 29 to open.

[0080] In the embodiments of the present disclosure, the detection device can monitor the leakage information of the water-fluorine heat exchanger 20. When the leakage information of the water-fluorine heat exchanger 20 is abnormal, such as in the case of leakage, the controller controls the opening and closing of the first valve 27, the second valve 28, the first electronic expansion valve 25, and the drain valve 29, which can quickly handle the leakage of the water-fluorine heat exchanger 20, without damaging other components, and does not require replacing all the equipment and ceiling of the heat exchange system, reducing the maintenance cost and protecting the property safety of users.

[0081] Optionally, when the detection device includes a first pressure sensor, the first pressure sensor is disposed on the refrigerant side of the water-fluorine heat exchanger 20 for detecting the pressure on the refrigerant side of the water-fluorine heat exchanger 20, and the leakage information includes the pressure on the refrigerant side of the water-fluorine heat exchanger 20; the first pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 leaks when the pressure on the refrigerant side of the water-fluorine heat exchanger 20 is less than the pressure threshold, control the first valve 27, the second valve 28, and the first electronic expansion valve 25 to close, and control the drain valve 29 to open.

[0082] In the embodiments of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the amount of refrigerant on the refrigerant side decreases, and the pressure on the refrigerant side also drops. Moreover, the leakage will cause a significant pressure change. Therefore, by using the first pressure sensor to detect the pressure on the refrigerant side of the water-fluorine heat exchanger 20 in real time on the refrigerant side, when the pressure on the refrigerant side is less than the pressure threshold, the controller controls the first valve 27 and the second valve 28 to close, so that water no longer enters and exits the water side. At the same time, the controller controls the drain valve 29 to open to drain the water on the water side, and controls the first electronic expansion valve 25 to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. In this way, it can be determined in time whether the water-fluorine heat exchanger 20 leaks, and it can be quickly handled to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0083] Optionally, when the detection device includes a second pressure sensor, the second pressure sensor is disposed on the water side of the water-fluorine heat exchanger 20 for detecting the pressure on the water side of the water-fluorine heat exchanger 20, and the leakage information includes the pressure on the water side of the water-fluorine heat exchanger 20; the second pressure sensor is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 leaks when the pressure of the water in the water-fluorine heat exchanger 20 is less than the initial water injection pressure, control the first valve 27, the second valve 28, and the first electronic expansion valve 25 to close, and control the drain valve 29 to open.

[0084] In the embodiment of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the water on the water side of the water-fluorine heat exchanger 20 will also decrease, which will cause the pressure on the water side to also decrease. The second pressure sensor can detect the pressure on the water side of the water-fluorine heat exchanger 20 in real time. When the pressure on the water side is less than the initial water injection pressure, it indicates that the water-fluorine heat exchanger 20 leaks. At this time, the controller controls the first valve 27 and the second valve 28 to close, so that no water enters or exits the water side. At the same time, the drain valve 29 is controlled to open to drain the water on the water side, and the first electronic expansion valve 25 is controlled to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. In this way, it can be determined in time whether the water-fluorine heat exchanger 20 leaks, and it can be quickly processed to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0085] Optionally, when the detection device includes a flow detection device, the flow detection device is used to detect the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger 20, and the leakage information includes the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger 20; the flow detection device is electrically connected to the controller, and the controller is configured to determine that the water-fluorine heat exchanger 20 leaks when the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger 20 is less than or equal to the flow rate threshold, control the first valve 27, the second valve 28, and the first electronic expansion valve 25 to close, and control the drain valve 29 to open.

[0086] In the embodiment of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger 20 will decrease. When the flow detection device detects that the flow rate of the water side and / or the refrigerant side of the water-fluorine heat exchanger is less than or equal to the flow rate threshold, it indicates that the water-fluorine heat exchanger 20 leaks. The controller controls both the first electronic expansion valve 25 and the second electronic expansion valve 26 to close to prevent the refrigerant and water on the refrigerant side from flowing into the outdoor unit 30. At the same time, the drain valve 29 is controlled to open to drain the water on the water side. In this way, it can be determined in time whether the water-fluorine heat exchanger 20 leaks, and it can be quickly processed to prevent damage to the entire heat exchange system due to the leakage of the water-fluorine heat exchanger 20.

[0087] Optionally, when the heat exchange system includes the first valve 27, the second valve 28, and the first electronic expansion valve 25, the first four-way valve 13 and the controller are both electrically connected. The controller is configured to control the first port of the first four-way valve 13 to communicate with the second port of the first four-way valve 13, and the third port of the first four-way valve 13 to communicate with the fourth port of the first four-way valve 13 when the water-fluorine heat exchanger 20 leaks.

[0088] In the embodiments of the present disclosure, when the water-fluorine heat exchanger 20 leaks, the controller controls the four ports of the first four-way valve 13 to communicate in the above manner. In this way, the high-temperature and high-pressure refrigerant flowing out of the compressor 10 flows through the first four-way valve 13 to the refrigerant side of the water-fluorine heat exchanger 20, so that the pressure of the refrigerant in the water-fluorine heat exchanger 20 is greater than the pressure of the water side, which can prevent the water on the water side from flowing into the refrigerant side. In addition, when the water-fluorine heat exchanger 20 leaks, both the first valve 27 and the second valve 28 are closed, which can also prevent the refrigerant from leaking to the outside from the water side.

[0089] Optionally, as Figure 3 shown, the water circulation system further includes an inlet pipeline 53 and an outlet pipeline 54. The inlet pipeline 53 is connected between the water outlet of the water side of the water-fluorine heat exchanger 20 and the water inlet of the heat dissipation module 50; the outlet pipeline 54 is connected between the water inlet of the water side of the water-fluorine heat exchanger 20 and the water outlet of the heat dissipation module 50.

[0090] In the embodiments of the present disclosure, the water circulation system includes the water side of the water-fluorine heat exchanger 20, the inlet pipeline 53, the heat dissipation module 50, and the outlet pipeline 54 arranged in sequence. After heat exchange, the water on the water side of the water-fluorine heat exchanger 20 will flow out to the inlet pipeline, then flow along the inlet pipeline 53 into the heat dissipation module 50, dissipate heat in the heat dissipation module 50, then flow into the outlet pipeline 54, and flow back into the water side of the water-fluorine heat exchanger 20 along the outlet pipeline 54.

[0091] Optionally, the inlet pipeline 53 is provided with an inlet stop valve 531 for controlling the on-off between the heat dissipation module 50 and the water outlet of the water-fluorine heat exchanger 20.

[0092] Optionally, the outlet pipeline 54 is provided with an outlet stop valve 541 for controlling the on-off between the heat dissipation module 50 and the water inlet of the water-fluorine heat exchanger 20.

[0093] Optionally, as Figure 3 shown, the water circulation system further includes a bypass pipeline 55. The bypass pipeline 55 is connected between the inlet pipeline 53 and the outlet pipeline 54; the bypass pipeline 55 is provided with a bypass valve 551 for controlling the opening degree of the bypass pipeline 55.

[0094] In the embodiments of the present disclosure, the bypass pipeline 55 connects the water inlet pipeline 53 and the water outlet pipeline 54. When the bypass valve 551 is opened, the water in the water inlet pipeline 53 can directly flow into the water outlet pipeline 54 without flowing into the heat dissipation module 50. In this way, when the heat dissipation module 50 is not working, the water circulation system can still be kept unobstructed, thus ensuring the normal operation of the heat exchange system.

[0095] Optionally, the number of heat dissipation modules 50 is multiple, and the multiple heat dissipation modules 50 are arranged in parallel between the water inlet pipeline 53 and the water outlet pipeline 54. The water circulation system further includes a water collector 51 and a water distributor 52. The water distributor 52 is connected between the outlet of the water inlet pipeline 53 and the multiple heat dissipation modules 50. The water distributor 52 is provided with multiple parallel water distribution ports, and the inlet of each heat dissipation module 50 is connected to a water distribution port. The water distributor 52 can distribute the water in the water inlet pipeline 53 to each heat dissipation module 50. The water collector 51 is arranged between the outlet of the heat dissipation module 50 and the inlet of the water outlet pipeline 54. The water collector 51 is provided with multiple parallel water collection ports, and the outlet of each heat dissipation module 50 is connected to a water collection port. The water collector 51 can collect the water cooled by the multiple heat dissipation modules 50 and then flow it into the water outlet pipeline 54.

[0096] The arrangement of the bypass pipeline 55 and the bypass valve 551 can keep the water path of the water circulation pipeline unobstructed when the water collector 51 is closed.

[0097] Optionally, the water circulation pipeline further includes a makeup water pipeline 56 and a makeup water valve 561. One end of the makeup water pipeline 56 is connected to the water outlet pipeline 54, and the other end of the makeup water pipeline 56 is connected to an external water source. The makeup water valve 561 is arranged on the makeup water pipeline 56 and is used to control the opening degree of the makeup water pipeline 56.

[0098] In the embodiments of the present disclosure, the makeup water pipeline 56 can supplement water into the water circulation pipeline to avoid insufficient water volume in the water circulation system, which may affect the heating and cooling effects. The makeup water valve 561 can control the on-off of the makeup water pipeline 56 and the water outlet pipeline 54.

[0099] Optionally, the makeup water valve 561 is an automatic makeup water valve 561, which can automatically adjust the opening degree.

[0100] Optionally, the external water source is tap water or a pressurized pump box.

[0101] Optionally, the water circulation system further includes a water pump 58. The water pump 58 is arranged in the water inlet pipeline 53 or the water outlet pipeline 54 and is used to drive the water to flow in the water circulation system.

[0102] Optionally, the water circulation system further includes a water tank 57 and a filter 571. The water tank 57 is disposed on the water outlet pipe 54 and is located between one end of the water replenishing pipe 56 and the water inlet of the water side of the water-fluorine heat exchanger 20; the filter 571 is disposed on the water replenishing pipe 56 and / or the water outlet pipe 54 and is located between the water tank 57 and the water side of the water-fluorine heat exchanger 20.

[0103] In the embodiment of the present disclosure, the water tank 57 can store water to maintain the water volume of the water circulation system. The filter 571 is disposed on the water replenishing pipe 56 and / or the water outlet pipe 54, so that the water in the water pipe can be filtered to ensure smooth flow.

[0104] Optionally, the filter 571 is a Y-type filter 571. When the fluid passes through the filter 571, solid particles are intercepted by the Y-type filter 571, thereby realizing the purification of the fluid.

[0105] Optionally, the water circulation system further includes a stop valve 562. The stop valve 562 is disposed at the outlet end of the water replenishing pipe 56 and is used to close the water replenishing pipe 56.

[0106] Optionally, the water outlet pipe 54 is provided with a first drain valve 581, which can drain the water in the water outlet pipe 54.

[0107] Optionally, the water inlet pipe 53 is provided with a second drain valve 582, which can drain the water in the water inlet pipe 53.

[0108] Optionally, the water inlet pipe 53 and the water outlet pipe 54 are both provided with a water pressure gauge 583, and the water pressure gauge 583 is used to detect the pressure of the water inlet pipe 53 and the water outlet pipe 54.

[0109] Optionally, the heat exchange system further includes a fifth pipeline 32, a sixth pipeline 33, a first throttling device 341 and a heat exchange device 34. One end of the fifth pipeline 32 is communicated with the outdoor unit 30, and the other end of the fifth pipeline 32 is communicated with the indoor unit 40 and the refrigerant side of the water-fluorine heat exchanger 20; one end of the sixth pipeline 33 is communicated with the fifth pipeline 32, and the other end of the sixth pipeline 33 is communicated with the intake port of the compressor 10; the first throttling device 341 is disposed on the sixth pipeline 33; the heat exchange device 34 includes a first heat exchange part and a second heat exchange part. The first heat exchange part is communicated with the fifth pipeline 32, and the second heat exchange part is communicated with the sixth pipeline 33 and is located downstream of the first throttling device 341.

[0110] In the embodiments of the present disclosure, a heat exchange device 34 is provided between the outdoor unit 30 and the indoor unit 40. When the heat exchange system is cooling, a part of the refrigerant flowing out after throttling of the outdoor unit 30 flows into the first heat exchange part, and the other part flows into the sixth pipeline 33. The sixth pipeline 33 is provided with a first throttling device 341. The refrigerant in the sixth pipeline 33 flows into the second heat exchange part after being throttled by the first throttling device 341. In this way, the refrigerant throttled and cooled in the second heat exchange part can exchange heat with the refrigerant in the first heat exchange part again, so that the refrigerant flowing out of the outdoor unit 30 can be completely condensed, and then flows into the indoor unit 40 for heat exchange and refrigeration. Similarly, when the heat exchange system is heating, the heat exchange device 34 can also further cool the refrigerant flowing out of the indoor unit 40 to improve the condensation effect, and then flows to the outdoor unit 30 for heat exchange.

[0111] Optionally, the heat exchange system further includes a second throttling device 31. The second throttling device 31 is arranged in the fifth pipeline 32 and is located between the heat exchange device 34 and the outdoor heat exchanger.

[0112] In the embodiments of the present disclosure, the outdoor unit 30 and the heat exchange device 34 are provided with a second throttling device 31. In this way, the refrigerant flowing out of the outdoor unit 30 is throttled by the second throttling device 31 and then flows into the heat exchange device 34, making the throttling of the refrigerant more uniform and the condensation effect better.

[0113] Optionally, the heat exchange system further includes a liquid inlet pipeline 41 and a gas outlet pipeline 42. One end of the liquid inlet pipeline 41 is communicated with the outlet of the first pipeline 21 and the outlet of the fifth pipeline 32, and the other end of the liquid inlet pipeline 41 is communicated with the inlet of the indoor unit 40; one end of the gas outlet pipeline 42 is communicated with the outlet of the indoor unit 40, and the other end of the gas outlet pipeline 42 is communicated with the compressor 10; wherein, the number of indoor units 40 is multiple, and the multiple indoor units 40 are arranged in parallel between the liquid inlet pipeline 41 and the gas outlet pipeline 42.

[0114] In the embodiments of the present disclosure, the multiple indoor units 40 are arranged in parallel, so that each indoor unit 40 can be independently controlled and can independently adjust the temperature of the space where it is located.

[0115] Optionally, the heat exchange system further includes a liquid pipe stop valve 43 and a gas pipe stop valve 44. The liquid pipe stop valve 43 is arranged in the liquid inlet pipeline 41 for controlling the on-off between the outdoor unit 30 and the indoor unit 40; the gas pipe stop valve 44 is arranged in the gas outlet pipeline 42 for controlling the on-off between the compressor 10 and the indoor unit 40.

[0116] In the embodiments of the present disclosure, the liquid pipe stop valve 43 and the gas pipe stop valve 44 can control the on-off between the indoor unit 40 and the outdoor unit 30 and the compressor 10, so as to realize the operation or stop of the indoor unit 40.

[0117] Optionally, the indoor unit 40 is arranged in parallel with the water-fluorine heat exchanger 20 between the outdoor unit 30 and the compressor 10.

[0118] This enables the indoor unit 40 and the heat dissipation module 50 to work independently, thereby achieving multi-directional heating or cooling.

[0119] Optionally, the indoor unit 40 is arranged in the upper-middle part of the room, and the heat dissipation module 50 is arranged in the lower-middle part of the room, so as to regulate the temperature of the entire room and improve the user experience.

[0120] Optionally, the heat dissipation module 50 includes a floor heating system, which is laid under the floor and can achieve heating.

[0121] Optionally, the heat dissipation module 50 includes a water heater, which can be used to provide hot water.

[0122] Optionally, the indoor heat exchanger is an air-cooled heat exchanger, which is arranged in the upper part of the room and is used for heating or cooling.

[0123] Optionally, the indoor heat exchanger is a wall-mounted air conditioner indoor unit 40, a cabinet-type air conditioner indoor unit 40, an embedded air conditioner indoor unit 40, a ceiling-mounted air conditioner or a window-type air conditioner indoor unit 40, etc.

[0124] Optionally, the heat exchange system further includes a liquid storage tank, which is located between the indoor heat exchanger and the first throttling device 341. The refrigerant after heat exchange in the indoor heat exchanger flows into the liquid storage tank after throttling by the third throttling device, and then flows from the liquid storage tank to the first throttling device 341. The refrigerant flowing out of the liquid storage tank converges with the refrigerant after throttling by the second throttling device 31 and then flows to the first throttling device 341.

[0125] In the embodiments of the present disclosure, the liquid storage tank can store the refrigerant in the heat exchange system, reduce the load of the indoor heat exchanger, and can adjust the flow rate of the refrigerant between the indoor heat exchanger and the outdoor heat exchanger to adapt to the load change of the indoor heat exchanger, and can maintain the pressure balance between the indoor heat exchanger and the outdoor heat exchanger to ensure the normal operation of the indoor heat exchanger.

[0126] Optionally, the heat exchange system further includes a gas-liquid separator 12, which is located between the inlet of the compressor 10 and the fourth port of the four-way valve. When the refrigerant after the heat exchange system circulates returns to the compressor 10, the gaseous and liquid refrigerants in the pipeline can be separated to ensure that only gaseous refrigerant enters the compressor 10, while the liquid refrigerant is temporarily stored to prevent a large amount of liquid refrigerant from entering the compressor 10, thereby avoiding liquid hammer phenomenon and protecting the compressor 10 from damage. Liquid hammer refers to the entry of liquid refrigerant into the compressor 10, which may cause impact and damage to the components of the compressor 10.

[0127] Optionally, the heat exchange system further includes an oil separator 11. The oil separator 11 is disposed on the exhaust pipe of the compressor 10 and is located between the exhaust port of the compressor 10 and the first port of the four-way valve.

[0128] In the embodiments of the present disclosure, the oil separator 11 separates the oil and the refrigerant in the compressor 10. During the operation of the compressor 10, part of the lubricating oil will be compressed together with the refrigerant and enter the heat exchange system. The oil separator 11 separates the oil from the refrigerant by different methods (such as centrifugation, filtration or gravity sedimentation).

[0129] Optionally, the heat exchange system further includes an oil return pipeline. The oil return pipeline communicates the compressor 10 and the oil separator. The lubricating oil separated by the oil separator 11 can flow back into the compressor 10 through the oil return pipeline, ensuring that the compressor 10 has sufficient lubricating oil, thereby avoiding mechanical failures caused by oil shortage.

[0130] Optionally, the heat exchange system further includes a prompting device. The prompting device is electrically connected to the controller. The controller controls the prompting device to work when the water-fluorine heat exchanger 20 leaks. This can prompt the user to perform maintenance in a timely manner.

[0131] Optionally, the prompting device can be an indicator light, a prompting sound, etc.

[0132] Optionally, the prompting device includes a line controller. The line controller is electrically connected to the controller. The controller can control the line controller to issue a prompt.

[0133] In a specific embodiment, the heat exchange system includes a first electronic expansion valve 25 and a second electronic expansion valve 26. The first electronic expansion valve 25 is disposed on the first pipeline 21, the second electronic expansion valve 26 is disposed on the second pipeline 22, and a drain valve 29 is provided on the third pipeline 23. In this way, when the water-fluorine heat exchanger 20 leaks, the inlets and outlets of the refrigerant side of the water-fluorine heat exchanger 20 are closed, and the water on the water side is discharged, which can prevent the water on the water side from flowing to components such as the outdoor unit 30 through the refrigerant side.

[0134] In another specific embodiment, the heat exchange system includes a first valve 27 and a second valve 28. The first valve 27 is disposed on the third pipeline 23, the second valve 28 is disposed on the fourth pipeline 24, a first electronic expansion valve 25 is provided on the first pipeline 21, and a drain valve 29 is further provided on the third pipeline 23. In this way, when the water-fluorine heat exchanger 20 leaks, the inlets and outlets of the water side of the water-fluorine heat exchanger 20 are closed, and the water on the water side is discharged. At the same time, the pressure on the refrigerant side is greater than the pressure on the water side, which can prevent the water on the water side from flowing to components such as the outdoor unit 30 through the refrigerant side.

[0135] In yet another specific embodiment, as Figure 6 and Figure 7As shown, the heat exchange system includes a first electronic expansion valve 25, a second electronic expansion valve 26, a first valve 27 and a second valve 28. A drain valve 29 is further provided on the third pipeline 23. In this way, when the water-fluorine heat exchanger 20 leaks, the inlets and outlets on the refrigerant side and the water side are both closed, and the water on the water side is drained, so that the water-fluorine heat exchanger 20 can be completely sealed to prevent water from flowing to components such as the outdoor unit 30.

[0136] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchange system, characterized in that, It includes a water circulation system and a refrigerant circulation system. The water circulation system includes a heat dissipation module. The refrigerant circulation system includes: An outdoor unit; A water-to-refrigerant heat exchanger. The water side of the water-to-refrigerant heat exchanger is connected to the heat dissipation module through a water circulation pipeline, and the refrigerant side of the water-to-refrigerant heat exchanger and the outdoor unit are connected through a refrigerant pipeline. The water circulation pipeline includes a third pipeline and a fourth pipeline. The third pipeline is connected to the water inlet of the water side of the water-to-refrigerant heat exchanger, and the fourth pipeline is connected to the water drain of the water side of the water-to-refrigerant heat exchanger; A first valve, provided in the third pipeline, for controlling the connection or disconnection between the third pipeline and the water side of the water-to-refrigerant heat exchanger; A second valve, provided in the fourth pipeline, for controlling the connection or disconnection between the fourth pipeline and the water side of the water-to-refrigerant heat exchanger.

2. The heat exchange system according to claim 1, wherein A drain port is provided in the third pipeline and / or the water side of the water-to-refrigerant heat exchanger, and the drain port is used to drain the water on the water side of the water-to-refrigerant heat exchanger to the outside; The heat exchange system further includes: A drain valve, provided at the drain port, for opening or closing the drain port.

3. The heat exchange system according to claim 2, characterized in that, The refrigerant pipeline includes: A first pipeline, one end of which is connected to the refrigerant side of the water-to-refrigerant heat exchanger, and the other end is connected to the outdoor unit; A first electronic expansion valve, provided in the first pipeline.

4. The heat exchange system according to claim 3, wherein It further includes: A detection device, for detecting whether the water-to-refrigerant heat exchanger leaks; A controller, electrically connected to the detection device, the first valve, the second valve, the first electronic expansion valve and the drain valve. The controller is configured to control the first valve, the second valve and the first electronic expansion valve to close and control the drain valve to open when the water-to-refrigerant heat exchanger leaks.

5. The heat exchange system according to claim 4, wherein The detection device includes: A first pressure sensor, provided on the refrigerant side of the water-to-refrigerant heat exchanger, for detecting the pressure on the refrigerant side of the water-to-refrigerant heat exchanger; The first pressure sensor is electrically connected to the controller. The controller is configured to determine that the water-to-refrigerant heat exchanger leaks, control the first valve, the second valve and the first electronic expansion valve to close, and control the drain valve to open when the pressure on the refrigerant side of the water-to-refrigerant heat exchanger is less than the pressure threshold; and / or, The detection device includes: A second pressure sensor, provided on the water side of the water-to-refrigerant heat exchanger, for detecting the pressure on the water side of the water-to-refrigerant heat exchanger; The second pressure sensor is electrically connected to the controller. The controller is configured to determine that the water-to-refrigerant heat exchanger leaks, control the first valve, the second valve and the first electronic expansion valve to close, and control the drain valve to open when the pressure of the water in the water-to-refrigerant heat exchanger is less than the initial water injection pressure.

6. The heat exchange system according to claim 4, wherein The detection device includes: A flow detection device, for detecting the flow rate of the water side and / or the refrigerant side of the water-to-refrigerant heat exchanger; The flow detection device is electrically connected to the controller. The controller is configured to determine that the water-to-refrigerant heat exchanger leaks, control the first valve, the second valve and the first electronic expansion valve to close, and control the drain valve to open when the flow rate of the water side and / or the refrigerant side of the water-to-refrigerant heat exchanger is less than or equal to the flow rate threshold.

7. The heat exchange system according to claim 4, wherein The refrigerant circulation system further includes: A compressor; A first four-way valve. The first port of the first four-way valve is connected to the exhaust port of the compressor, the second port of the first four-way valve is connected to the refrigerant side, the third port of the first four-way valve is connected to the outdoor unit, and the fourth port of the first four-way valve is connected to the intake port of the compressor; Wherein, the first four-way valve and the controller are both electrically connected, and the controller is configured to control the connection between the first port and the second port of the first four-way valve, and the connection between the third port and the fourth port of the first four-way valve when a leak occurs in the water-fluorine heat exchanger.

8. The heat exchange system according to any one of claims 1 to 7, characterized in that, The water circulation system further includes: A water inlet pipeline, which is connected between the water outlet of the water side of the water-fluorine heat exchanger and the water inlet of the heat dissipation module; A water outlet pipeline, which is connected between the water inlet of the water side of the water-fluorine heat exchanger and the water outlet of the heat dissipation module; A bypass pipeline, which is connected between the water inlet pipeline and the water outlet pipeline; A bypass valve, which is arranged on the bypass pipeline and is used to control the opening degree of the bypass pipeline.

9. The heat exchange system according to claim 8, characterized in that, The water circulation pipeline further includes: A water replenishing pipeline, one end of which is connected to the water outlet pipeline and the other end of which is connected to an external water source; A water replenishing valve, which is arranged on the water replenishing pipeline and is used to control the opening degree of the water replenishing pipeline.

10. The heat exchange system according to claim 9, characterized in that, The water circulation system further includes: A water tank, which is arranged on the water outlet pipeline and is located between one end of the water replenishing pipeline and the water inlet of the water side of the water-fluorine heat exchanger; A filter, which is arranged on the water replenishing pipeline and / or the water outlet pipeline and is located between the water tank and the water side of the water-fluorine heat exchanger.

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