Air conditioning system

Abstract

The utility model relates to the technical field of air conditioning, and discloses an air conditioning system. The air conditioning system comprises an outdoor air conditioning system which comprises an outdoor heat exchanger and a refrigerant inlet pipe, and the refrigerant inlet pipe is communicated with an inlet of the outdoor heat exchanger; the indoor air conditioning system comprises a water-fluorine heat exchanger and a water outlet pipe, the water-fluorine heat exchanger comprises a refrigerant side and a water side which exchange heat with each other, the refrigerant side is communicated with the outdoor heat exchanger through a refrigerant circulating pipeline, and a water outlet of the water side is provided with the water outlet pipe; the first heat exchange device comprises a first heat exchange part and a second heat exchange part which exchange heat with each other, the first heat exchange part is communicated with the water outlet pipe, and the second heat exchange part is communicated with the refrigerant inlet pipe, so that a refrigerant of the refrigerant inlet pipe and water of the water outlet pipe exchange heat in the first heat exchange device. According to the air conditioning system, the water source of the system is effectively utilized, heat conveyed to the indoor side does not need to be reduced or power consumption does not need to be increased, the energy efficiency of the air conditioning system can be guaranteed, frosting is delayed while the capacity is not lost, and the use experience of a user is improved.

Description

Technical Field

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

[0002] As people's demand for room area increases, the installation space for the outdoor unit of the air conditioner is continuously squeezed, resulting in poor heat dissipation of the outdoor unit. The cold energy released by the outdoor unit cannot be discharged in time, causing the air conditioner to easily frost. After frosting, the system capacity decreases and cannot exert its normal capacity, exacerbating users' complaints about the effect.

[0003] In the related art, the operation of delaying frosting of the air conditioner can be controlled. There are many common methods for delaying frosting of the air conditioner, such as increasing electromagnetic heating, reducing the operating frequency of the compressor, increasing the opening degree of the electronic expansion valve, gas injection and enthalpy increase, etc.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, the common operations for delaying frosting of the air conditioner are all to reduce the heat delivered to the indoor side or increase the power consumption when the outdoor unit is about to frost. Although this can delay the frosting of the outdoor unit, it will cause the energy efficiency of the air conditioning system to decrease, resulting in loss of capacity and affecting the user experience.

[0006] 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. Therefore, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0007] 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. Instead, it serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide an air conditioning system to delay the frosting of the air conditioner without loss of capacity and improve the user experience.

[0009] The embodiments of the present disclosure provide an air conditioning system, which includes: an outdoor air conditioning system, including an outdoor heat exchanger and a refrigerant inlet pipe, the refrigerant inlet pipe is connected to the inlet of the outdoor heat exchanger; an indoor air conditioning system, including a water-fluorine heat exchanger and a water outlet pipe, the water-fluorine heat exchanger includes a refrigerant side and a water side that exchange heat with each other, the refrigerant side is connected to the outdoor heat exchanger through a refrigerant circulation pipeline, and the water outlet of the water side is provided with a water outlet pipe; a first heat exchange device, including a first heat exchange part and a second heat exchange part that exchange heat with each other, the first heat exchange part is connected to the water outlet pipe, and the second heat exchange part is connected to the refrigerant inlet pipe, so that the refrigerant in the refrigerant inlet pipe exchanges heat with the water in the water outlet pipe in the first heat exchange device.

[0010] Optionally, the air conditioning system further includes: a first connecting pipeline, which is connected between the outlet of the water outlet pipe and the inlet of the first heat exchange part; a second connecting pipeline, which is connected between the outlet of the first heat exchange part and the water side inlet; a water valve, which is arranged on the first connecting pipeline and / or the second connecting pipeline, and is used to control the connection or disconnection between the first heat exchange part and the water side.

[0011] Optionally, the air conditioning system further includes: a first temperature sensor, which is arranged on the coil of the outdoor heat exchanger and is used to detect the temperature of the coil of the outdoor heat exchanger; a controller, which is electrically connected to both the first temperature sensor and the water valve, and the controller is configured to control the opening degree of the water valve according to the temperature of the outdoor heat exchanger.

[0012] Optionally, the controller is configured to control the water valve to close when the temperature of the coil of the outdoor heat exchanger is greater than or equal to a temperature threshold; and / or, the air conditioning system further includes: a second temperature sensor, which is used to detect the outdoor ambient temperature; the controller is configured to control the water valve to open when the temperature of the coil of the outdoor heat exchanger is less than the temperature threshold, the outdoor ambient temperature is less than the temperature of the coil of the outdoor heat exchanger, and the difference between the outdoor ambient temperature and the temperature of the coil of the outdoor heat exchanger is greater than or equal to a preset difference.

[0013] Optionally, the indoor air conditioning system further includes: a water inlet pipe, the outlet of the water inlet pipe is connected to the water side inlet, the first inlet of the water inlet pipe is connected to a water source, and the second inlet of the water inlet pipe is connected to the outlet of the second connecting pipeline; the inlet of the water outlet pipe is connected to the water side outlet, the first outlet of the water outlet pipe is connected to the first connecting pipeline, and the second outlet of the water outlet pipe is connected to an external component.

[0014] Optionally, the air conditioning system further includes: a first throttling device, which is arranged on the refrigerant inlet pipe, and the second heat exchange part is connected between the first throttling device and the outdoor heat exchanger.

[0015] Optionally, the air conditioning system further includes: a second throttling device, which is arranged between the refrigerant outlet of the refrigerant side and the first throttling device.

[0016] Optionally, the indoor air conditioning system further includes: an indoor heat exchanger, the indoor heat exchanger is arranged in parallel with the refrigerant side of the water-fluorine heat exchanger, and the refrigerant outlets of the refrigerant sides are both connected to the refrigerant inlet pipe.

[0017] Optionally, the air conditioning system further includes: a third throttling device, which is arranged between the refrigerant outlet of the indoor heat exchanger and the first throttling device.

[0018] Optionally, the air conditioning system further includes: a compressor; a first four-way valve, the first port of the first four-way valve is communicated with the exhaust port of the compressor, the second port of the first four-way valve is communicated with the refrigerant inlet of the refrigerant side, the third port of the first four-way valve is communicated with the refrigerant outlet of the outdoor heat exchanger, and the fourth port of the first four-way valve is communicated with the intake port of the compressor; a second four-way valve, the first port of the second four-way valve is communicated with the exhaust port of the compressor, the second port of the second four-way valve is communicated with the refrigerant inlet of the indoor heat exchanger, the third port of the second four-way valve is communicated with the refrigerant outlet of the outdoor heat exchanger, and the fourth port of the second four-way valve is communicated with the intake port of the compressor.

[0019] The air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] In the air conditioning system of the embodiments of the present disclosure, the outdoor heat exchanger is located outdoors and the water-fluorine heat exchanger is located indoors. The refrigerants of the outdoor heat exchanger and the water-fluorine heat exchanger are communicated through the refrigerant circulation pipeline, which can ensure the normal operation of the outdoor heat exchanger and the indoor heat exchanger. The water side of the water-fluorine heat exchanger can exchange heat with the refrigerant side. When the air conditioning system is heating, the high-temperature refrigerant on the refrigerant side in the water-fluorine heat exchanger exchanges heat with the cold water on the water side, and the temperature of the water flowing out of the water side rises. Then, the heated water flowing out of the water side passes through the outlet pipe and flows to the first heat exchange part. The second heat exchange part in the first heat exchange device is communicated with the refrigerant inlet pipe. In this way, the water in the first heat exchange part can increase the temperature of the refrigerant in the second heat exchange part, and further increase the temperature of the refrigerant flowing into the outdoor heat exchanger, thereby increasing the temperature of the outdoor heat exchanger, delaying the frosting of the outdoor heat exchanger. In this way, the air conditioning system effectively utilizes the water source of its own system, does not need to reduce the heat delivered to the indoor side or increase the power consumption, can ensure the energy efficiency of the air conditioning system, delay frosting without losing capacity, and improve the user experience.

[0021] 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

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a proportional limitation, and among them:

[0023] Figure 1 is a schematic structural diagram of an air conditioning system provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of another air conditioning system provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of another air conditioning system provided by an embodiment of the present disclosure;

[0026] Figure 4 It is a schematic structural diagram of another air conditioning system provided by an embodiment of the present disclosure;

[0027] Figure 5 It is a schematic structural diagram of another air conditioning system provided by an embodiment of the present disclosure.

[0028] Reference numerals:

[0029] 10. Compressor; 101. Exhaust pipe; 102. Suction pipe; 11. Oil separator; 12. First four-way valve; 13. Second four-way valve; 14. Water-fluorine heat exchanger; 143. Second throttling device; 144. Water inlet pipe; 145. Water outlet pipe; 146. Water pump; 147. Expansion tank; 15. Indoor heat exchanger; 151. Third throttling device; 16. Outdoor heat exchanger; 161. First throttling device; 162. Refrigerant inlet pipe; 17. Gas-liquid separator; 18. Liquid storage tank; 20. First heat exchange device; 23. First communication pipeline; 24. Second communication pipeline; 25. Water valve; 30. Second heat exchange device; 33. Third communication pipeline; 34. Fourth communication pipeline; 35. Valve; 40. First temperature sensor; 41. Detection device; 411. Third temperature sensor; 412. High-pressure pressure sensor. Detailed implementation manners

[0030] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, 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 purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0031] Terms such as "first" and "second" in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to be 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 here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0032] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. 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 examples, 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. Moreover, in addition to being able to represent the 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.

[0033] In addition, the terms "arrangement", "connection", "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection 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.

[0034] Unless otherwise specified, the term "plurality" means two or more.

[0035] 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.

[0036] 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.

[0037] Combined Figures 1 to 5 As shown, the embodiments of the present disclosure provide an air conditioning system. The air conditioning system includes a refrigerant circulation system. The refrigerant circulation system includes a compressor 10, a four-way valve, an indoor unit, a throttling device, and an outdoor unit connected through a refrigerant circulation pipeline. The air conditioning system can switch between cooling and heating through the four-way valve. The compressor 10 includes an intake port and an exhaust port. The exhaust pipe 101 is communicated with the exhaust port of the compressor 10, and the suction pipe 102 is communicated with the intake port of the compressor 10.

[0038] Define the first port of the four-way valve as port d, the second port of the four-way valve as port e, the third port of the four-way valve as port c, and the fourth port of the four-way valve as port s.

[0039] As Figures 1 to 5As shown in the figure, when the air conditioning system is in heating mode, the four-way valve is connected such that the de connection is established and the cs connection is established. The high-temperature and high-pressure refrigerant flowing out of the compressor 10 passes through the d port of the four-way valve and flows towards the e port, then enters the indoor unit. After condensing and dissipating heat in the indoor unit, it passes through the throttling device and flows into the outdoor unit. After evaporating in the outdoor unit, it flows from the c port of the four-way valve to the s port, and then flows back into the compressor 10.

[0040] When the air conditioning system is in cooling mode, the four-way valve is connected such that the dc connection is established and the es connection is established. The high-temperature and high-pressure refrigerant flowing out of the compressor 10 passes through the d port of the four-way valve and flows towards the c port, then enters the outdoor unit. After condensing and dissipating heat in the outdoor unit, it passes through the throttling device and flows into the indoor unit. After evaporating in the indoor unit, it flows from the e port of the four-way valve to the s port, and then returns to the compressor 10.

[0041] The air conditioning system includes an outdoor air conditioning system and an indoor air conditioning system. The outdoor air conditioning system includes an outdoor unit, and the outdoor unit includes an outdoor heat exchanger 16. The indoor air conditioning system includes an indoor unit, and the indoor unit includes a water-fluorine heat exchanger 14. The water-fluorine heat exchanger 14 includes a refrigerant side and a water side that exchange heat with each other. Among them, the refrigerant side is connected to the outdoor heat exchanger 16 through a refrigerant circulation pipeline, and the water outlet pipe 145 is connected to the water outlet of the water side. As Figure 1 and Figure 2 shown in the figure, the air conditioning system further includes a first heat exchange device 20. The first heat exchange device 20 includes a first heat exchange part and a second heat exchange part that exchange heat with each other. The first heat exchange part is connected to the water outlet pipe 145, and the second heat exchange part is connected to the refrigerant inlet pipe 162, so that the refrigerant in the refrigerant inlet pipe 162 exchanges heat with the water in the water outlet pipe 145 in the first heat exchange device 20.

[0042] In the embodiment of the present disclosure, the heat exchange between the water in the water side of the water-fluorine heat exchanger 14 and the refrigerant in the refrigerant side can adjust the temperature of the water side. When the air conditioning system is in heating mode, the temperature of the refrigerant in the refrigerant side of the water-fluorine heat exchanger 14 is higher than the temperature of the refrigerant in the outdoor heat exchanger 16. Therefore, after the water in the water side that exchanges heat with the refrigerant side of the water-fluorine heat exchanger 14 exchanges heat with the refrigerant side, the temperature of the water rises, and the temperature of the water in the water outlet pipe 145 connected to the water outlet of the water side is relatively high. In this way, after the water in the water outlet pipe 145 flows into the first heat exchange part and exchanges heat with the refrigerant in the second heat exchange part, it can increase the temperature of the refrigerant in the second heat exchange part. In this way, the temperature of the refrigerant flowing out of the second heat exchange part rises, which can increase the temperature of the refrigerant flowing into the outdoor heat exchanger 16, and thus increase the temperature of the outdoor heat exchanger 16. When there is a risk of frosting on the outdoor heat exchanger 16, through the heat exchange of the first heat exchange device 20, the temperature of the refrigerant flowing into the outdoor heat exchanger 16 can be increased, and the temperature of the outdoor heat exchanger 16 can be increased. In this way, the frosting of the outdoor heat exchanger 16 can be delayed, and the heat delivered to the indoor side will not be reduced or the power consumption will not be increased, which can ensure the energy efficiency of the air conditioning system, delay frosting without losing the capacity of the air conditioning system, and improve the user experience.

[0043] Optionally, the outdoor unit further includes an outdoor fan corresponding to the outdoor heat exchanger 16 for air-cooling the outdoor heat exchanger 16.

[0044] Optionally, the air-conditioning system further includes a first communication pipeline 23, a second communication pipeline 24, and a water valve 25. The first communication pipeline 23 is connected between the outlet of the water outlet pipe 145 and the inlet of the first heat exchange part; the second communication pipeline 24 is connected between the outlet of the first heat exchange part and the water inlet of the water side; the water valve 25 is provided in the first communication pipeline 23 and / or the second communication pipeline 24 for controlling the connection or disconnection between the first heat exchange part and the water side.

[0045] In the embodiment of the present disclosure, the water heated by the water-fluorine heat exchanger 14 flows out through the water outlet pipe 145. The water in the water outlet pipe 145 flows through the first communication pipeline 23 into the first heat exchange part, then flows into the second communication pipeline 24 after passing through the first heat exchange part and the second heat exchange part, and then flows into the water-fluorine heat exchanger 14 through the second communication pipeline 24. The water valve 25 is provided in the first communication pipeline 23 and / or the second communication pipeline 24, so that the on-off of the first heat exchange part can be controlled. When there is no frosting risk for the outdoor heat exchanger 16, the water valve 25 can be closed, so that the refrigerant flowing into the outdoor heat exchanger 16 does not need to exchange heat with the first heat exchange part. When there is a frosting risk for the outdoor heat exchanger 16, the water valve 25 can be opened to allow water to pass through the first heat exchange part, so that the first heat exchange part can exchange heat with the second heat exchange part, increasing the temperature of the refrigerant flowing into the outdoor heat exchanger 16 and delaying frosting.

[0046] Optionally, the air-conditioning system further includes a controller electrically connected to the water valve 25, and the controller can control the opening and closing of the water valve 25.

[0047] Optionally, the air-conditioning system further includes a first temperature sensor 40 provided on the outdoor heat exchanger 16 for detecting the temperature of the outdoor heat exchanger 16; the controller is electrically connected to both the first temperature sensor 40 and the water valve 25, and the controller is configured to control the opening degree of the water valve 25 according to the temperature of the outdoor heat exchanger 16.

[0048] In the embodiment of the present disclosure, the first temperature sensor 40 is provided on the outdoor heat exchanger 16, and the first temperature sensor 40 can detect the temperature of the outdoor heat exchanger 16 in real time. When the temperature of the outdoor heat exchanger 16 is too low and there is a frosting risk, the first temperature sensor 40 timely sends a signal to the controller so that the controller controls the opening degree of the water valve 25, facilitating timely control of the operation of the first heat exchange device 20 and adjusting the temperature flowing into the outdoor heat exchanger 16 to delay frosting of the outdoor unit heat exchanger.

[0049] Optionally, the controller is configured to control the water valve 25 to close when the temperature of the outdoor heat exchanger 16 is greater than or equal to the temperature threshold.

[0050] In an embodiment of the present disclosure, the temperature threshold refers to the critical temperature at which the outdoor heat exchanger 16 frosts. When the temperature of the outdoor heat exchanger 16 is greater than or equal to the temperature threshold, it indicates that the temperature of the outdoor heat exchanger 16 is relatively high and there is no frosting risk. At this time, the water valve 25 is controlled to close, and the first heat exchange device 20 stops heat exchange. The temperature of the refrigerant flowing into the outdoor heat exchanger 16 through the refrigerant inlet pipe 162 does not need to be adjusted, ensuring the normal operation of the air conditioning system.

[0051] Optionally, the temperature threshold is 0°C.

[0052] Optionally, the air conditioning system further includes a second temperature sensor for detecting the outdoor ambient temperature. The controller is configured to control the water valve 25 to open when the temperature of the outdoor heat exchanger 16 is less than the temperature threshold, the outdoor ambient temperature is less than the temperature of the outdoor heat exchanger 16, and the difference between the outdoor ambient temperature and the temperature of the outdoor heat exchanger 16 is greater than or equal to a preset difference.

[0053] In an embodiment of the present disclosure, the second temperature sensor can detect the outdoor ambient temperature. When the temperature of the outdoor heat exchanger 16 is less than the temperature threshold, the outdoor ambient temperature is less than the temperature of the outdoor heat exchanger 16, and the difference between the outdoor ambient temperature and the temperature of the outdoor heat exchanger 16 is greater than or equal to a preset difference, it indicates that the temperature difference between the outdoor ambient temperature and the outdoor heat exchanger 16 is relatively large. In this case, the surface of the outdoor heat exchanger 16 is likely to frost. At this time, the water valve 25 is controlled to open so that the first heat exchange device 20 starts heat exchange, increasing the temperature of the refrigerant flowing into the outdoor heat exchanger 16, which can increase the temperature of the coil of the outdoor heat exchanger 16 and delay frosting.

[0054] Optionally, the indoor air conditioning system further includes a water inlet pipe 144. The outlet of the water inlet pipe 144 (hereinafter collectively referred to as the first outlet of the water inlet pipe 144 for easy distinction) is communicated with the water inlet of the water side. The first inlet of the water inlet pipe 144 is communicated with a water source, and the second inlet of the water inlet pipe 144 is communicated with the outlet of the second communication pipeline 24. The inlet of the water outlet pipe 145 (hereinafter collectively referred to as the first inlet of the water outlet pipe 145 for easy distinction) is communicated with the water outlet of the water side. The first outlet of the water outlet pipe 145 is communicated with the first communication pipeline 23, and the second outlet of the water outlet pipe 145 is communicated with an external component.

[0055] In the embodiments of the present disclosure, the water of the water source enters the water side of the water-fluorine heat exchanger 14 through the water inlet pipe 144, exchanges heat with the refrigerant on the refrigerant side in the water-fluorine heat exchanger 14. At the same time, the heat-exchanged water flowing out from the first heat exchange part of the first heat exchange device 20 can also flow into the water side through the water inlet pipe 144 to realize the circulating flow of water. The water after heat exchange in the water-fluorine heat exchanger 14 flows into the water outlet pipe 145, and the water in the water outlet pipe 145 can be communicated with the first communication pipeline 23 and flow into the first heat exchange part to increase the temperature of the refrigerant in the fourth heat exchange part. Similarly, when the first heat exchange part does not need heat exchange or has less heat exchange demand, at least part of the heat-exchanged water flowing out from the water outlet pipe 145 can be discharged through the second outlet of the water outlet pipe 145.

[0056] Optionally, the external component can be a water heater or a floor heating system, etc., for transporting the heat-exchanged water to other components for heating.

[0057] Optionally, the external component can also be a drain outlet.

[0058] Optionally, the water source can be an independent external water source, such as tap water or municipal water. The water source can also be an external component, such as a water heater or a floor heating system, etc. That is to say, the heat-exchanged water in the external component can flow back into the water-fluorine heat exchanger through the water inlet pipe for re-heat exchange.

[0059] For example, when the external component is a floor heating system, the water outlet of the floor heating system is communicated with the first inlet of the water inlet pipe, and the water inlet of the floor heating system is communicated with the second outlet of the water outlet, so that the floor heating and the water-fluorine heat exchanger form a water circulation loop.

[0060] Optionally, the air-conditioning system further includes a water pump 146, and the water pump 146 is arranged in the water inlet pipe 144 for driving the water of the water source to flow in the water inlet pipe 144 and driving the water in the water inlet pipe 144 to flow into the water side and / or the first heat exchange part.

[0061] Optionally, the air-conditioning system further includes an expansion tank 147, and the expansion tank 147 is located upstream of the water pump. The expansion tank can absorb the change in water volume caused by temperature change, thereby reducing the pressure fluctuation and maintaining the stability of the water supply pressure. Protect the water pump and avoid frequent start and stop of the water pump due to excessive system pressure fluctuation, and extend the service life of the water pump.

[0062] Optionally, the throttling device includes a first throttling device 161, and the first throttling device 161 is arranged in the refrigerant inlet pipe 162, and the second heat exchange part is communicated between the first throttling device 161 and the outdoor heat exchanger 16.

[0063] In an embodiment of the present disclosure, the first throttling device 161 can throttle the refrigerant condensed by the indoor heat exchanger 15, so as to reduce the pressure and temperature of the refrigerant, and then facilitate the refrigerant to enter the outdoor heat exchanger 16 for evaporation, improving the heat dissipation effect. The second heat exchange part is arranged between the first throttling device 161 and the outdoor heat exchanger 16, so as to re-regulate the temperature of the refrigerant throttled by the first throttling device 161. If it is arranged upstream of the throttling device, the first heat exchange device 20 cannot regulate the temperature of the refrigerant flowing to the outdoor heat exchanger 16.

[0064] Optionally, the throttling device further includes a second throttling device 143, and the second throttling device 143 is arranged between the refrigerant outlet on the refrigerant side and the first throttling device 161.

[0065] In an embodiment of the present disclosure, when the air-conditioning system is heating, the refrigerant flowing out from the refrigerant side of the water-fluorine heat exchanger 14 passes through the second throttling device 143 and the first throttling device 161 in sequence and then flows into the second heat exchange part, and then flows into the outdoor heat exchanger 16. Throttling by the throttling device multiple times can accurately control the flow rate of the refrigerant, reduce energy waste, improve the energy efficiency ratio of the air-conditioning system, optimize the evaporation and condensation processes, and improve the heating or cooling efficiency.

[0066] Optionally, the indoor unit further includes an indoor heat exchanger 15, and the indoor heat exchanger 15 is arranged in parallel with the refrigerant side of the water-fluorine heat exchanger 14. The refrigerant outlet on the refrigerant side and the refrigerant outlet of the indoor heat exchanger 15 are both communicated with the refrigerant inlet pipe 162.

[0067] In an embodiment of the present disclosure, the indoor unit is provided with the indoor heat exchanger 15 and the water-fluorine heat exchanger 14, which can increase the number of heat exchangers indoors, and then increase the area and range of indoor temperature adjustment, improving the cooling or heating effect. In addition, the indoor heat exchanger 15 and the water-fluorine heat exchanger 14 are arranged in parallel, so that the indoor heat exchanger 15 and the water-fluorine heat exchanger 14 are each independent and can be independently controlled, improving the flexibility of use.

[0068] Optionally, the air-conditioning system further includes a third throttling device 151, and the third throttling device 151 is arranged between the refrigerant outlet of the indoor heat exchanger 15 and the first throttling device 161.

[0069] In an embodiment of the present disclosure, the refrigerant flowing out from the indoor heat exchanger 15 passes through the third throttling device 151 and the first throttling device 161 in sequence and then flows into the outdoor heat exchanger 16. In this way, the refrigerant of the indoor heat exchanger 15 also passes through throttling multiple times, which can accurately control the flow rate of the refrigerant, reduce energy waste, improve the energy efficiency ratio of the air-conditioning system, optimize the evaporation and condensation processes, and improve the heating or cooling efficiency.

[0070] Optionally, the four-way valve includes a first four-way valve 12. The first port of the first four-way valve 12 is communicated with the exhaust port of the compressor 10. The second port of the first four-way valve 12 is communicated with the refrigerant inlet on the refrigerant side. The third port of the first four-way valve 12 is communicated with the refrigerant outlet of the outdoor heat exchanger 16. The fourth port of the first four-way valve 12 is communicated with the intake port of the compressor 10.

[0071] In the embodiment of the present disclosure, the first four-way valve 12 can realize the flow path switching during the refrigeration and heating of the water-fluorine heat exchanger 14 and the outdoor heat exchanger 16. The first port of the first four-way valve 12 is port d, the second port of the first four-way valve 12 is port e, the third port of the first four-way valve 12 is port c, and the fourth port of the first four-way valve 12 is port s. When the air-conditioning system is in heating mode, the high-temperature and high-pressure refrigerant flowing out of the exhaust port of the compressor 10 flows through the first port d of the first four-way valve 12 to the second port e of the first four-way valve 12, then passes through the water-fluorine heat exchanger 14, the second throttling device 143 and the first throttling device 161 and then flows into the second heat exchange part, and then flows from the second heat exchange part into the outdoor heat exchanger 16. After flowing out of the outdoor heat exchanger 16, it flows from the third port c of the first four-way valve 12 to the fourth port s of the first four-way valve 12, and then flows back into the compressor 10.

[0072] Optionally, the air-conditioning system further includes a second four-way valve 13. The first port of the second four-way valve 13 is communicated with the exhaust port of the compressor 10. The second port of the second four-way valve 13 is communicated with the refrigerant inlet of the indoor heat exchanger 15. The third port of the second four-way valve 13 is communicated with the refrigerant outlet of the outdoor heat exchanger 16. The fourth port of the second four-way valve 13 is communicated with the intake port of the compressor 10.

[0073] In the embodiment of the present disclosure, the second four-way valve 13 can realize the flow path switching during the refrigeration and heating of the indoor heat exchanger 15 and the outdoor heat exchanger 16. The first port of the second four-way valve 13 is port d, the second port of the second four-way valve 13 is port e, the third port of the second four-way valve 13 is port c, and the fourth port of the second four-way valve 13 is port s. When the air-conditioning system is in heating mode, the high-temperature and high-pressure refrigerant flowing out of the exhaust port of the compressor 10 flows through the first port d of the second four-way valve 13 to the second port e of the second four-way valve 13, then passes through the indoor heat exchanger 15, the third throttling device 151 and the first throttling device 161 and then flows into the second heat exchange part, and then flows from the second heat exchange part into the outdoor heat exchanger 16. After flowing out of the outdoor heat exchanger 16, it flows from the third port c of the second four-way valve 13 to the fourth port s of the second four-way valve 13, and then flows back into the compressor 10.

[0074] Optionally, the number of the indoor heat exchangers 15 is multiple, and the multiple indoor heat exchangers 15 are arranged in parallel. In this way, the multiple indoor heat exchangers 15 can be installed in multiple rooms for refrigeration or heating.

[0075] Optionally, the number of the third throttling devices 151 is the same as and in one-to-one correspondence with the number of the indoor heat exchangers 15.

[0076] Optionally, the first throttling device 161, the second throttling device 143, and the third throttling device 151 can be electronic expansion valves or capillary tubes.

[0077] Optionally, the air-conditioning system further includes a water circulation system. The water circulation system includes a heat dissipation module. The outlet of the heat dissipation module is communicated with the water inlet of the water side of the water-fluorine heat exchanger 14, and the inlet of the heat dissipation module is communicated with the water outlet of the water side of the water-fluorine heat exchanger 14.

[0078] In the embodiments of the present disclosure, the water heated after heat exchange by the water-fluorine heat exchanger 14 can also flow into the heat dissipation module, and the heat dissipation module can be used for supplying hot water or heating.

[0079] Optionally, the heat dissipation module includes a floor heating system laid under the floor and capable of achieving heating.

[0080] Optionally, the heat dissipation module includes a water heater that can be used to provide hot water.

[0081] Optionally, the indoor heat exchanger 15 is an air-cooled heat exchanger provided at the upper part of the room and used for heating or cooling.

[0082] Optionally, the indoor heat exchanger 15 is a wall-mounted air-conditioning indoor unit, a cabinet-type air-conditioning indoor unit, an embedded air-conditioning indoor unit, a ceiling-mounted unit, or a window-type air-conditioning indoor unit, etc.

[0083] Optionally, the air-conditioning system further includes a liquid storage tank 18. The liquid storage tank 18 is located between the indoor heat exchanger 15 and the first throttling device 161. The refrigerant after heat exchange by the indoor heat exchanger 15 flows into the liquid storage tank 18 after throttling by the third throttling device 151, and then flows from the liquid storage tank 18 to the first throttling device 161. The refrigerant flowing out of the liquid storage tank 18 converges with the refrigerant after throttling by the second throttling device 143 and then flows to the first throttling device 161.

[0084] In the embodiments of the present disclosure, the liquid storage tank 18 can store the refrigerant in the air-conditioning system, reduce the load of the indoor heat exchanger 15, and can adjust the flow rate of the refrigerant between the indoor heat exchanger 15 and the outdoor heat exchanger 16 to adapt to the load change of the indoor heat exchanger 15, and can maintain the pressure balance between the indoor heat exchanger 15 and the outdoor heat exchanger 16 to ensure the normal operation of the indoor heat exchanger 15.

[0085] Optionally, the air conditioning system further includes a gas-liquid separator 17, which is located between the intake port of the compressor 10 and the fourth port of the four-way valve. When the refrigerant after the circulation of the air conditioning system returns to the compressor 10, the gas-liquid separator 17 can separate the gaseous and liquid refrigerants in the pipeline, ensuring that only gaseous refrigerant enters the compressor 10, while the liquid refrigerant is temporarily stored, preventing a large amount of liquid refrigerant from entering the compressor 10, thereby avoiding liquid slugging phenomenon and protecting the compressor 10 from damage. Liquid slugging refers to the entry of liquid refrigerant into the compressor 10, which may cause impact and damage to the components of the compressor 10.

[0086] Optionally, the air conditioning system further includes an oil separator 11, which is provided on the exhaust pipe 101 of the compressor 10 and is located between the exhaust port of the compressor 10 and the first port of the four-way valve.

[0087] In the embodiment of the present disclosure, the oil separator 11 separates the oil and 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 air conditioning system. The oil separator 11 separates the oil from the refrigerant by different methods (such as centrifugation, filtration or gravity sedimentation).

[0088] Optionally, the air conditioning system further includes an oil return pipeline, which connects 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 lack of oil.

[0089] Optionally, the air conditioning system further includes a gas pipe stop valve, which is provided between the second port of the second four-way valve 13 and the indoor heat exchanger 15 and can control the on-off between the second four-way valve 13 and the indoor heat exchanger 15.

[0090] Optionally, the air conditioning system further includes a liquid pipe stop valve, which is provided between the third throttling device 151 and the outdoor heat exchanger 16 and can control the on-off between the third throttling device 151 and the outdoor heat exchanger 16.

[0091] Optionally, as Figure 3 and Figure 4 shown, the air conditioning system further includes a water inlet pipe 144 and a second heat exchange device 30. The water inlet pipe 144 is connected to the water inlet of the water side of the water-fluorine heat exchanger 14. The second heat exchange device 30 includes a third heat exchange part and a fourth heat exchange part that exchange heat with each other. The third heat exchange part is connected to the water inlet pipe 144, and the fourth heat exchange part is connected to the exhaust pipe 101, so that the water in the water inlet pipe 144 exchanges heat with the refrigerant in the exhaust pipe 101 in the second heat exchange device 30.

[0092] In an embodiment of the present disclosure, the water inlet of the water side of the water-fluorine heat exchanger 14 is communicated with the water inlet pipe 144, and the water inlet pipe 144 is communicated with a water source. Therefore, the temperature of the water in the water inlet pipe 144 is relatively low. The third heat exchange part of the second heat exchange device 30 is communicated with the water inlet pipe 144, and the water at a relatively low temperature can enter the third heat exchange part. The fourth heat exchange part of the second heat exchange device 30 is communicated with the exhaust pipe 101 of the compressor 10. Therefore, the refrigerant at a relatively high temperature flowing out of the compressor 10 is in the fourth heat exchange part. The water in the third heat exchange part exchanges heat with the refrigerant in the fourth heat exchange part, which can reduce the temperature of the fourth heat exchange part, and further reduce the temperature of the refrigerant in the exhaust pipe 101, and reduce the exhaust temperature of the compressor 10. In this way, the energy efficiency of the air-conditioning system will not be reduced, and the exhaust temperature of the compressor 10 can be reduced without losing capacity, improving the user experience.

[0093] Optionally, the air-conditioning system further includes a third communication pipeline 33, a fourth communication pipeline 34 and a valve 35. The third communication pipeline 33 is communicated between the water inlet pipe 144 and the inlet of the third heat exchange part; the fourth communication pipeline 34 is communicated between the outlet of the third heat exchange part and an external component; the valve 35 is arranged on the third communication pipeline 33 and / or the fourth communication pipeline 34 for controlling the on-off of the third heat exchange part.

[0094] In an embodiment of the present disclosure, the second heat exchange device 30 forms a water circuit through the third communication pipeline 33 and the fourth communication pipeline 34. The low-temperature water in the water inlet pipe 144 flows into the third heat exchange part along the third communication pipeline 33 to exchange heat with the refrigerant in the fourth heat exchange part and then flows into the fourth communication pipeline 34. The heat-exchanged water flows into an external component in the fourth communication pipeline 34 for evaporation heat dissipation. The valve 35 is arranged on the third communication pipeline 33 and / or the fourth communication pipeline 34, so that the on-off of the third heat exchange part can be controlled. Furthermore, the third heat exchange part can be controlled to exchange heat with the fourth heat exchange part, so that the exhaust temperature of the compressor 10 is adjustable, ensuring the normal use of the air-conditioning system.

[0095] Optionally, the air-conditioning system further includes a detection device 41. The detection device 41 is arranged on the exhaust pipe 101 for detecting the refrigerant temperature in the exhaust pipe 101 or the high-pressure pressure of the exhaust pipe 101. The controller is electrically connected to the detection device 41 and the valve 35, and the controller is configured to control the opening degree of the valve 35 according to the refrigerant temperature in the exhaust pipe 101 or the high-pressure pressure of the exhaust pipe 101.

[0096] In an embodiment of the present disclosure, the detection device 41 can detect the exhaust temperature or exhaust pressure of the compressor 10 in real time. When the exhaust temperature or exhaust pressure of the compressor 10 is too high, the valve 35 can be opened in time to enable the low-temperature water to enter the third heat exchange part and exchange heat with the refrigerant in the fourth heat exchange part, so as to reduce the refrigerant temperature in the exhaust pipe 101, and further ensure the normal operation of the air-conditioning system.

[0097] Optionally, the detection device 41 includes a temperature sensor 40 (hereinafter collectively referred to as the third temperature sensor 411 for ease of description) and / or a high-pressure pressure sensor 412.

[0098] In the embodiments of the present disclosure, the third temperature sensor 411 can detect the exhaust temperature of the compressor 10, so that the valve 35 can control the on-off of the third heat exchange part according to the exhaust temperature, avoiding the influence of the too high exhaust temperature of the compressor 10 on the operating efficiency of the air-conditioning system, especially resulting in the reduction of the refrigeration efficiency. The pressure sensor can detect the exhaust pressure of the compressor 10, and then can control the on-off of the third heat exchange part according to the exhaust pressure, avoiding the too high exhaust pressure of the compressor 10, which causes the decrease of the energy efficiency ratio of the air-conditioning system.

[0099] Optionally, when the detection device 41 includes the third temperature sensor 411, the third temperature sensor 411 is located between the exhaust port of the compressor 10 and the oil separator 11, so that the exhaust temperature of the exhaust port of the compressor 10 can be detected in time, and then the opening and closing of the valve 35 can be controlled to ensure the temperature of the refrigerant flowing into the oil separator 11.

[0100] Optionally, the detection device 41 includes a high-pressure pressure sensor 412, and the high-pressure pressure sensor 412 is arranged between the oil separator 11 and the four-way valve, so that the detection accuracy can be improved, and the exhaust pressure flowing into the four-way valve can be ensured to be within an appropriate range.

[0101] Optionally, the fourth heat exchange part is connected between the oil separator 11 and the exhaust port of the compressor 10.

[0102] In the embodiments of the present disclosure, the fourth heat exchange part is arranged upstream of the oil separator 11, so that the refrigerant cooled by heat exchange in the fourth heat exchange part then flows into the oil separator 11, avoiding the too high temperature of the refrigerant entering the oil separator 11. This can ensure the viscosity of the lubricating oil in the oil separator 11, avoid the viscosity decrease, weaken the lubricating effect of the lubricating oil, ensure the service life of the head of the oil separator 11, and avoid excessive wear. In addition, reducing the exhaust temperature can also avoid the oil vapor and oil droplet particles in the oil separator 11 being discharged together with the refrigerant vapor, thereby ensuring the oil separation efficiency, and can avoid the damage of the compressor 10 due to lack of oil. Moreover, it can avoid the abnormal expansion of the internal components of the oil separator 11, and then avoid the jamming of the oil separator 11.

[0103] Optionally, the first inlet of the water inlet pipe is communicated with a water source, the first outlet of the water inlet pipe is communicated with the water inlet of the water side, and the second outlet of the water inlet pipe is communicated with the inlet of the third heat exchange part; the first inlet of the water outlet pipe is communicated with the water outlet of the water side, the second inlet of the water outlet pipe is communicated with the outlet of the third heat exchange part, and the second outlet of the water outlet pipe is communicated with an external component.

[0104] In this way, after the water from the water source enters the water inlet pipe, a part of it flows to the water side of the water-fluorine heat exchanger, and the other part flows into the third heat exchange part. The water after heat exchange in the third heat exchange part flows into the water outlet pipe and then flows out through the water outlet pipe. The water after heat exchange on the water side of the water-fluorine heat exchanger also flows out through the water outlet pipe.

[0105] As Figure 5 shown, in a specific embodiment, the air-conditioning system includes a first heat exchange device 20 and a second heat exchange device 30. When the air-conditioning system is heating, the first heat exchange device 20 and the water valve operate according to the temperatures detected by the first temperature sensor and the second temperature sensor to increase the temperature of the refrigerant flowing into the outdoor heat exchanger and avoid frosting of the outdoor heat exchanger. When the air-conditioning system is cooling, the second heat exchange device and the valve operate according to the temperature and / or pressure detected by the detection device to reduce the exhaust temperature or exhaust pressure of the compressor. In this way, whether the air-conditioning system is in the cooling or heating condition, it can utilize its own water resources to adjust the temperature of the refrigerant, delaying frosting or reducing the exhaust temperature and pressure of the compressor without losing the capacity of the air-conditioning system, improving the user experience, and improving the energy efficiency of the air-conditioning system.

[0106] Optionally, the first inlet of the water inlet pipe is connected to the water pipe, the second inlet of the water inlet pipe is connected to the second communication pipeline, the first outlet of the water inlet pipe is connected to the water inlet pipe on the water side, and the second outlet of the water inlet pipe is connected to the inlet of the third heat exchange part.

[0107] Optionally, the first inlet of the water outlet pipe is connected to the water outlet on the water side, the second inlet of the water outlet pipe is connected to the outlet of the third heat exchange part, the first outlet of the water outlet pipe is connected to the inlet of the first communication pipeline, and the second outlet of the water outlet pipe is connected to an external component.

[0108] 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 can 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. An air conditioning system, characterized in that, Comprising: An outdoor air-conditioning system, including an outdoor heat exchanger and a refrigerant inlet pipe, the refrigerant inlet pipe being communicated with the inlet of the outdoor heat exchanger; An indoor air-conditioning system, including a water-fluorine heat exchanger and a water outlet pipe, the water-fluorine heat exchanger including a refrigerant side and a water side that exchange heat with each other, the refrigerant side being communicated with the outdoor heat exchanger through a refrigerant circulation pipeline, and the water outlet of the water side being provided with a water outlet pipe; A first heat exchange device, including a first heat exchange part and a second heat exchange part that exchange heat with each other, the first heat exchange part being communicated with the water outlet pipe, and the second heat exchange part being communicated with the refrigerant inlet pipe, so that the refrigerant in the refrigerant inlet pipe exchanges heat with the water in the water outlet pipe in the first heat exchange device.

2. The air conditioning system according to claim 1, wherein Further comprising: A first communication pipeline, communicated between the outlet of the water outlet pipe and the inlet of the first heat exchange part; A second communication pipeline, communicated between the outlet of the first heat exchange part and the water inlet of the water side; A water valve, provided in the first communication pipeline and / or the second communication pipeline, for controlling the communication or disconnection between the first heat exchange part and the water side.

3. The air conditioning system according to claim 2, wherein Further comprising: A first temperature sensor, provided on the coil of the outdoor heat exchanger, for detecting the temperature of the coil of the outdoor heat exchanger; A controller, electrically connected to both the first temperature sensor and the water valve, the controller being configured to control the opening degree of the water valve according to the temperature of the outdoor heat exchanger.

4. The air-conditioning system according to claim 3, wherein the controller is configured to control the water valve to close when the temperature of the coil of the outdoor heat exchanger is greater than or equal to a temperature threshold; and / or, the air-conditioning system further comprises: A second temperature sensor, for detecting the outdoor ambient temperature; the controller is configured to control the water valve to open when the temperature of the coil of the outdoor heat exchanger is less than the temperature threshold, the outdoor ambient temperature is less than the temperature of the coil of the outdoor heat exchanger, and the difference between the outdoor ambient temperature and the temperature of the coil of the outdoor heat exchanger is greater than or equal to a preset difference.

5. The air conditioning system according to claim 2, characterized in that, The indoor air-conditioning system further comprises: A water inlet pipe, the outlet of the water inlet pipe being communicated with the water inlet of the water side, the first inlet of the water inlet pipe being communicated with a water source, and the second inlet of the water inlet pipe being communicated with the outlet of the second communication pipeline; The inlet of the water outlet pipe is communicated with the water outlet of the water side, the first outlet of the water outlet pipe is communicated with the first communication pipeline, and the second outlet of the water outlet pipe is communicated with an external component.

6. The air conditioning system according to any one of claims 1 to 5, characterized in that, Further comprising: A first throttling device, provided in the refrigerant inlet pipe, and the second heat exchange part is communicated between the first throttling device and the outdoor heat exchanger.

7. The air conditioning system according to claim 6, characterized in that, Further comprising: A second throttling device, provided between the refrigerant outlet of the refrigerant side and the first throttling device.

8. The air conditioning system according to claim 6, wherein, The indoor air-conditioning system further comprises: An indoor heat exchanger, the indoor heat exchanger being arranged in parallel with the refrigerant side of the water-fluorine heat exchanger, and the refrigerant outlets of the refrigerant side and the indoor heat exchanger are both communicated with the refrigerant inlet pipe.

9. The air conditioning system according to claim 8, wherein, Further comprising: A third throttling device, provided between the refrigerant outlet of the indoor heat exchanger and the first throttling device.

10. The air conditioning system according to claim 8, characterized in that, Further comprising: A compressor; A first four-way valve, the first port of the first four-way valve being communicated with the exhaust port of the compressor, the second port of the first four-way valve being communicated with the refrigerant inlet of the refrigerant side, the third port of the first four-way valve being communicated with the refrigerant outlet of the outdoor heat exchanger, and the fourth port of the first four-way valve being communicated with the intake port of the compressor; The second four-way valve, the first port of the second four-way valve is communicated with the exhaust port of the compressor, the second port of the second four-way valve is communicated with the refrigerant inlet of the indoor heat exchanger, the third port of the second four-way valve is communicated with the refrigerant outlet of the outdoor heat exchanger, and the fourth port of the second four-way valve is communicated with the intake port of the compressor.

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