Evaporator and air conditioning system

Abstract

The utility model provides an evaporator and an air conditioning system, the evaporator is used for the air conditioning system, the evaporator comprises a chilled water coil and a refrigerant coil, the chilled water coil communicates with a heat exchange module and is used for circulating circulating water, and the heat exchange module exchanges heat with a chilled water unit to obtain chilled water; the refrigerant coil pipe is used for being communicated with a fluorine pump so as to circulate a refrigerant; the chilled water coil pipe comprises a chilled water liquid inlet pipe and a chilled water liquid outlet pipe which are communicated with each other, the refrigerant coil pipe comprises a refrigerant liquid inlet pipe and a refrigerant liquid outlet pipe which are communicated with each other, and the chilled water liquid inlet pipe, the refrigerant liquid inlet pipe, the chilled water liquid outlet pipe and the refrigerant liquid outlet pipe are sequentially arranged. The chilled water inlet pipe is arranged close to the air inlet side of the evaporator, and the refrigerant outlet pipe is arranged close to the air outlet side of the evaporator. According to the evaporator and the air conditioning system, multiple operation modes can be provided, and the operation reliability and stability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to an evaporator and an air-conditioning system. Background Art

[0002] As the temperature control requirements for the environment in application scenarios such as computer rooms become increasingly stringent, the requirements for the reliability, stability, and energy efficiency of the air-conditioning systems of refrigeration equipment are also becoming increasingly higher.

[0003] During the implementation of this application, the inventors discovered that the prior art has at least the following problems:

[0004] Existing refrigeration equipment and air conditioning systems often operate in a single mode, failing to meet the diverse application needs of equipment rooms. Existing single-source air conditioning systems often rely on terminal chilled water or air-cooled compressors for cooling within equipment rooms. These single-mode systems fail to fully utilize the natural cooling capacity of outdoor cooling systems to achieve energy savings and emissions reductions. Existing dual-source equipment in equipment rooms also suffers from poor coil layouts. Refrigerant leaks can easily cause the chilled water coils to freeze and crack, compromising the reliability and stability of the air conditioning system. Summary of the Invention

[0005] Based on this, the present application provides an evaporator and an air-conditioning system to improve the technical problem of a single operating mode of the air-conditioning system in the prior art.

[0006] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0007] On the one hand, an embodiment of the present application provides an evaporator for an air-conditioning system, including a chilled water coil and a refrigerant coil, the chilled water coil being connected to a heat exchange module for circulating circulating water, and the heat exchange module obtaining chilled water by heat exchange with a chilled water unit; the refrigerant coil being used to connect to a fluorine pump for circulating refrigerant; the chilled water coil including a chilled water inlet pipe and a chilled water outlet pipe being connected, the refrigerant coil including a refrigerant inlet pipe and a refrigerant outlet pipe being connected, the chilled water inlet pipe, the refrigerant inlet pipe, the chilled water outlet pipe, and the refrigerant outlet pipe being arranged in sequence, and the chilled water inlet pipe being arranged close to the air inlet side of the evaporator, and the refrigerant outlet pipe being arranged close to the air outlet side of the evaporator.

[0008] In one embodiment, the evaporator includes at least one evaporator unit, each of the evaporator units includes multiple chilled water coil units and multiple refrigerant coil units; the liquid inlets of the multiple chilled water coil units are respectively connected to the liquid outlet of the heat exchange module, and the liquid outlets of the multiple chilled water coil units are respectively connected to the liquid inlet of the heat exchange module; the liquid outlets of the multiple refrigerant coil units are respectively connected to the liquid inlet of the fluorine pump, and the liquid inlets of the multiple refrigerant coil units are respectively connected to the liquid outlet of the fluorine pump.

[0009] In one embodiment, the chilled water inlet pipe of each chilled water coil unit includes a plurality of first inlet pipe units arranged in parallel, and the plurality of first inlet pipe units are sequentially connected end to end to form a serpentine chilled water inlet pipe; the chilled water outlet pipe of each chilled water coil unit includes a plurality of first outlet pipe units arranged in parallel, and the plurality of first outlet pipe units are sequentially connected end to end to form a serpentine chilled water outlet pipe, and at the same time, the outlet of the chilled water inlet pipe is connected to the inlet of the chilled water outlet pipe;

[0010] The refrigerant liquid inlet pipe of each refrigerant coil unit includes a plurality of second liquid inlet pipe units arranged in parallel, and the plurality of second liquid inlet pipe units are sequentially connected end to end to form a serpentine refrigerant liquid inlet pipe; the refrigerant liquid outlet pipe includes a plurality of second liquid outlet pipe units arranged in parallel, and the plurality of second liquid outlet pipe units are sequentially connected end to end to form a serpentine refrigerant liquid outlet pipe, and the liquid outlet of the refrigerant liquid inlet pipe is connected to the liquid inlet of the refrigerant liquid outlet pipe;

[0011] Each of the evaporator units is sequentially arranged with the chilled water inlet pipe, the refrigerant inlet pipe, the chilled water outlet pipe and the refrigerant outlet pipe from the air inlet side to the air outlet side.

[0012] In one embodiment, the evaporator includes two evaporator units, the two evaporator units are arranged at an angle, and each evaporator unit is arranged tilted relative to the air inlet direction.

[0013] In one embodiment, the angle between the two evaporator units is not less than 30°.

[0014] In one embodiment, the evaporator takes in air from the outside to the inside of the two evaporator units respectively, the side where the two evaporator units are close to each other is defined as the inside, and the side where the two evaporator units are far away from each other is defined as the outside.

[0015] On the other hand, an embodiment of the present application provides an air-conditioning system, comprising the evaporator as described above.

[0016] In one embodiment, it includes a chilled water system and a fluorine pump system, the chilled water system includes the chilled water unit, the heat exchange module and the chilled water coil; the fluorine pump system includes the fluorine pump, the expansion valve, the refrigerant coil and the condenser forming a circulation loop.

[0017] In one embodiment, the air-conditioning system further comprises a liquid storage tank, which is connected between the condenser and the fluorine pump, and a liquid storage tank inlet pipe and a liquid storage pipe outlet pipe are respectively provided at the bottom of the liquid storage tank, a subcooling pipe is provided between the liquid storage tank inlet pipe and the liquid storage tank outlet pipe, a first one-way valve is provided on the subcooling pipe, a first control valve is provided between the liquid storage tank inlet pipe and the condenser; a second control valve and a second one-way valve are provided between the condenser and the refrigerant coil; bypass pipes are connected to both ends of the fluorine pump, a third one-way valve is provided on the bypass pipe, and a third control valve is provided between the fluorine pump and the expansion valve.

[0018] In one embodiment, a fourth control valve is connected in series to the inlet end of the chilled water unit, and a fifth control valve is connected in series to the outlet end of the chilled water unit.

[0019] The present application has at least the following beneficial effects: the evaporator provided in the embodiment of the present application is a dual-cold source evaporator, including a chilled water coil and a refrigerant coil. The chilled water coil obtains chilled water from the chilled water unit, and the refrigerant coil is used to connect to the fluorine pump. The dual-cold source design can achieve multi-mode control of the air-conditioning system, enabling the air-conditioning system to meet the application requirements of different scenarios, and fully utilizes natural resources, which is conducive to reducing the energy consumption of the air-conditioning system. The chilled water inlet pipe is arranged near the air inlet side of the evaporator, and the refrigerant outlet pipe is arranged near the air outlet side of the evaporator. This can make the heat exchange temperature difference of the chilled water system larger, increase the heat exchange efficiency, reduce the chilled water flow rate, reduce the energy consumption of the pump body of the chilled water unit, and reduce the mechanical refrigeration power consumption of the chilled water unit, thereby improving energy efficiency. The air-conditioning system of the embodiment of the present application includes the above-mentioned evaporator and therefore also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the air-conditioning system according to an embodiment of the present application.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the coil cross section of the evaporator of the air conditioning system.

[0022] Figure 3 for Figure 2 Schematic diagram of the cross section of an evaporator unit.

[0023] Figure 4 for Figure 2Schematic diagram of the cross-section of the coil group.

[0024] In the above diagram, the hollow arrows represent the direction of gas flow, and the solid arrows represent the direction of liquid flow.

[0025] The meanings of the reference numerals in the accompanying drawings are as follows:

[0026] 10. Chilled water system; 11. Chilled water unit; 12. Fifth control valve; 13. Fourth control valve; 14. Heat exchange module; 20. Fluorine pump system; 201. Fluorine pump system indoor unit; 202. Fluorine pump system outdoor unit; 21. Fluorine pump; 211. Third check valve; 212. Bypass pipe; 22. Third control valve; 23. Dry filter; 24. Expansion valve; 25. Evaporator; 250. Evaporator unit; 251. Refrigerant coil; 2510. Refrigerant liquid inlet pipe; 2511. Second liquid inlet pipe unit; 2512. Refrigerant Liquid outlet pipe; 2513, second liquid outlet pipe unit; 2514, refrigerant coil unit; 252, chilled water coil; 2520, chilled water inlet pipe; 2521, first liquid inlet pipe unit; 2522, chilled water outlet pipe; 2523, first liquid outlet pipe unit; 2524, chilled water coil unit; 26, second control valve; 27, second one-way valve; 28, condenser; 29, liquid storage tank; 291, liquid storage tank inlet pipe; 292, liquid storage tank outlet pipe; 293, first one-way valve; 294, subcooling pipe; 295, first control valve. DETAILED DESCRIPTION

[0027] The technical solution of this application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit the implementation of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the description of this application, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] See also Figure 1 The air conditioning system of the embodiment of the present application includes a chilled water system 10 and a fluorine pump system 20. The chilled water system 10 includes a chilled water unit 11 and a chilled water coil 252. The chilled water unit 11 is used to cool the circulating water in the chilled water system 10, so that the circulating water becomes chilled water, and performs heat exchange with the external air at the chilled water coil 252. The fluorine pump system 20 includes a fluorine pump 21, an expansion valve 24, a refrigerant coil 251 and a condenser 28 forming a circulation loop. The chilled water system 10 and the fluorine pump system 20 share an evaporator 25, and the evaporator 25 includes a chilled water coil 252 and a refrigerant coil 251. The chilled water unit 11 generally includes four basic components: a compressor, a condenser, a throttle and an evaporator. The chilled water coil 252 is also connected to a chilled water pump (not shown) and a heat exchange module 14. The chilled water pump is used to provide circulation power for the circulating water in the chilled water system 10. The circulating water exchanges heat with the refrigerant in the evaporator of the chilled water unit 11 at the heat exchange module 14, so that the circulating water temperature is reduced to form chilled water. The chilled water exchanges heat with the outside air at the chilled water coil 252 to achieve control of the ambient temperature.

[0032] Specifically, in this embodiment, a fluorine pump system 20 is used to circulate refrigerant. The fluorine pump system 20 includes a fluorine pump 21, a filter drier 23, an expansion valve 24, a refrigerant coil 251, a condenser 28, and a liquid reservoir 29, which are sequentially connected to form a circulation loop. The expansion valve 24 is an electronic expansion valve. The bottom of the liquid reservoir 29 is provided with a liquid reservoir inlet pipe 291 and a liquid reservoir outlet pipe 292. A subcooling pipe 294 is connected between the liquid reservoir inlet pipe 291 and the liquid reservoir outlet pipe 292. The subcooling pipe 294 is provided with a first check valve 293. The first check valve 293 ensures subcooling at the outlet of the liquid reservoir 29 and prevents refrigerant backflow. The liquid reservoir inlet pipe 291 is connected to the outlet of the condenser 28, and a first control valve 295 is provided in the pipeline between the liquid reservoir inlet pipe 291 and the condenser 28 outlet. A second control valve 26 and a second one-way valve 27 are provided, in sequence, between the outlet of the refrigerant coil 251 and the inlet of the condenser 28. The second one-way valve 27 is used to prevent refrigerant migration caused by low outdoor temperature and low pressure, and high indoor temperature and high pressure. The liquid storage tank outlet pipe 292 is connected to the inlet of the fluorine pump 21. A bypass pipe 212 is connected between the inlet and outlet of the fluorine pump 21. A third one-way valve 211 is connected in series to the bypass pipe 212. A third control valve 22 is connected in series between the outlet of the fluorine pump 21 and the inlet of the drying filter 23. The number of third control valves 22 can be one or two. The first control valve 295, the second control valve 26, and the third control valve 22 are each ball valves used for manual flow adjustment and opening and closing the fluorine pump system outdoor unit 202. The provision of the first control valve 295 prevents drastic changes in temperature and pressure within the liquid storage tank 29 and prevents refrigerant from flowing back into the condenser 28.

[0033] Specifically, in this embodiment, the liquid inlet and liquid outlet of the heat exchange module 14 of the chilled water system 10 are connected to the chilled water coil 252 via pipelines, forming a circulating water loop. To facilitate control of the chilled water system 10, a fourth control valve 13 is provided between the liquid inlet of the heat exchange module 14 and the liquid outlet of the chilled water coil 252, and a fifth control valve 12 is provided between the liquid outlet of the heat exchange module 14 and the liquid inlet of the chilled water coil 252. The fourth control valve 13 and the fifth control valve 12 can be, for example, ball valves, used to control the opening and closing of the chilled water system 10.

[0034] like Figure 2 and Figure 3 As shown, the evaporator 25 includes at least one evaporator unit 250. In this embodiment, the evaporator 25 includes two evaporator units 250. Figure 4As shown, each evaporator unit 250 includes multiple chilled water coil units 2524 and multiple refrigerant coil units 2514. The multiple chilled water coil units 2524 are stacked sequentially along the length of the evaporator unit 250, and the multiple refrigerant coil units 2514 are stacked sequentially along the length of the evaporator unit 250. The liquid inlets of the multiple chilled water coil units 2524 are respectively connected to the liquid outlets of the heat exchange module 14, and the liquid outlets of the multiple chilled water coil units 2524 are respectively connected to the liquid inlet of the heat exchange module 14; the liquid outlets of the multiple refrigerant coil units 2514 are respectively connected to the liquid inlet of the fluorine pump 21, and the liquid inlets of the multiple refrigerant coil units 2514 are respectively connected to the liquid outlet of the fluorine pump 21. For example, a delivery manifold can be provided at the liquid inlet of the chilled water coil unit 2524. The delivery manifold has multiple outlets and one inlet. The multiple outlets are respectively connected to the liquid inlet of the chilled water coil unit 2524, and the inlet of the delivery manifold is connected to the liquid outlet of the heat exchange module 14. A recovery manifold can be provided at the liquid outlet of the chilled water coil unit 2524. The recovery manifold has multiple inlets and one outlet. The multiple inlets are respectively connected to the liquid outlet of the chilled water coil unit 2524, and the outlet of the recovery manifold is connected to the liquid inlet of the heat exchange module 14. Similarly, a liquid inlet manifold can be provided at the liquid inlet of the refrigerant coil unit 2514. The liquid inlet manifold has multiple outlets and one inlet. The multiple outlets are respectively connected to the liquid inlet of the refrigerant coil unit 2514, and the inlet of the liquid inlet manifold is connected to the liquid outlet of the fluorine pump 21. A liquid outlet manifold can be provided at the liquid outlet of the refrigerant coil unit 2514. The liquid outlet manifold has multiple inlets and one outlet. The multiple inlets are respectively connected to the liquid outlet of the refrigerant coil unit 2514, and the outlet is connected to the liquid inlet of the fluorine pump 21. Each evaporator unit 250 is provided with multiple chilled water coil units 2524 and multiple refrigerant coil units 2514, which can divert the circulating liquid and speed up the liquid in and out of the coil (chilled water coil 252 or refrigerant coil 251).

[0035] The chilled water coil unit 2524 includes a chilled water inlet pipe 2520 and a chilled water outlet pipe 2522 that are connected to each other, and the refrigerant coil 251 includes a refrigerant inlet pipe 2510 and a refrigerant outlet pipe 2512 that are connected to each other. The chilled water coil 252 and the refrigerant coil 251 are arranged alternately, that is, the chilled water inlet pipe 2520, the refrigerant inlet pipe 2510, the chilled water outlet pipe 2522, and the refrigerant outlet pipe 2512 are arranged in sequence, and the chilled water inlet pipe 2520 is arranged close to the air inlet side of the evaporator 25, and the refrigerant outlet pipe 2512 is arranged close to the air outlet side of the evaporator 25.

[0036] The chilled water inlet pipe 2520 of each chilled water coil unit 2524 includes a plurality of first inlet pipe units 2521 arranged in parallel, and the plurality of first inlet pipe units 2521 are connected end to end in sequence to form a serpentine chilled water inlet pipe 2520. The chilled water outlet pipe 2522 of each chilled water coil unit 2524 includes a plurality of first outlet pipe units 2523 arranged in parallel, and the plurality of first outlet pipe units 2523 are connected end to end to form a serpentine chilled water outlet pipe 2522. The outlet of the chilled water inlet pipe 2520 is connected to the inlet of the chilled water outlet pipe 2522.

[0037] The refrigerant inlet pipe 2510 of each refrigerant coil unit 2514 includes a plurality of second inlet pipe units 2511 arranged in parallel. The plurality of second inlet pipe units 2511 are connected end to end to form a serpentine refrigerant inlet pipe 2510. The refrigerant outlet pipe 2512 includes a plurality of second outlet pipe units 2513 arranged in parallel. The plurality of second outlet pipe units 2513 are connected end to end to form a serpentine refrigerant outlet pipe 2512. The outlet of the refrigerant inlet pipe 2510 is connected to the inlet of the refrigerant outlet pipe 2512.

[0038] Each evaporator unit is sequentially provided with a chilled water inlet pipe 2520, a refrigerant inlet pipe 2510, a chilled water outlet pipe 2522 and a refrigerant outlet pipe 2512 from the air inlet side to the air outlet side.

[0039] In this embodiment, the two evaporator units 250 of the evaporator 25 are arranged at an angle, with one end of the two evaporator units 250 closer to each other and the other end farther away from each other, forming a V-shaped cross-section. Each evaporator unit 250 is tilted relative to the air inlet direction of the evaporator 25. The tilted evaporator 250 increases the contact area with the air, which helps improve heat exchange efficiency. The angle α between the two evaporator units 250 is no less than 30°, for example, 60°. Within this angle range, the evaporator units 250 maximize the heat exchange area. Air enters the two evaporator units 250 from the outside to the inside (the outside is the side where the two evaporator units 250 are farther away from each other, and the inside is the side where the two evaporator units 250 are closer to each other). The two evaporator units 250 of the evaporator 250 can each enter air from their respective outside to the inside, allowing for better heat exchange with the air. The heat-exchanged air is then collected in the inner cavity, preventing the air inside and outside from mixing, thereby enhancing heat exchange.

[0040] In order to further enhance the heat exchange function of the evaporator 25, a number of fin structures (not shown) can also be set on the outer walls of the chilled water coil 252 and the refrigerant coil 251 of the evaporator 25. The coils (chilled water coil 252 and refrigerant coil 251) can be copper tubes, and the fins can be aluminum fins. The aluminum fins can be inserted at a certain interval along the radial direction of the copper tube.

[0041] The control method of the air conditioning system in the embodiment of the present application is as follows:

[0042] When the outdoor ambient temperature is not higher than the first preset temperature value, that is, when the outdoor ambient temperature is relatively low, the fluorine pump system 20 can be operated alone for temperature control. At this time, the fourth control valve 13 and the fifth control valve 12 can be closed, shutting down the outdoor chilled water system 10. At this time, the indoor return air passes through the evaporator 25, which only has the refrigerant flow path of the fluorine pump system 20. After heat exchange in the evaporator 25, the air is delivered to the indoor room. The refrigerant in the evaporator 25 flows out, passes through the second control valve 26 and the second one-way valve 27, and enters the condenser 28 for air-cooled heat exchange with the outdoor environment. The cooled refrigerant flows through the first ball valve and enters the liquid storage tank 29. The refrigerant flowing out of the liquid storage tank 29 is pressurized by the fluorine pump 21, passes through the third control valve 22 of the fluorine pump system indoor unit 201 and the fluorine pump system outdoor unit 202, enters the drying filter 23 for drying and filtration, enters the electronic expansion valve 24 for throttling, and then returns to the evaporator 25 to complete the refrigeration cycle.

[0043] At this point, fluorine pump 21 is turned on, and the corresponding third check valve 211 needs to be closed. Liquid storage tank 29 primarily functions to stabilize the amount of refrigerant flowing through the system, ensuring normal operation. The first check valve 293 corresponding to liquid storage tank 29 primarily ensures the subcooling of the liquid before it enters fluorine pump 21, while also preventing liquid from flowing back into condenser 28 due to ambient temperature fluctuations.

[0044] When the outdoor ambient temperature is higher than the first preset temperature value and not higher than the second preset temperature value (for example, the outdoor ambient temperature is high but not higher than the indoor return air temperature), the chilled water system 10 and the fluorine pump system 20 can be turned on at the same time to perform temperature control. At this time, if the fluorine pump system 20 is operated alone, the cooling capacity of the system will be insufficient. The chilled water system 10 can be turned on at the same time to supplement the cooling capacity of the system. At this time, the indoor return air passes through the evaporator 25 of the cross-flow coil composed of the chilled water coil 252 and the refrigerant coil 251, and heat exchanges with the refrigerant and circulating water in the evaporator 25 respectively. The refrigerant and circulating water in the evaporator 25 are then returned to the condenser 28 of the outdoor unit 202 of the fluorine pump system and the outdoor chilled water system 10 for cooling and heat exchange with the outdoor air. After heat exchange, they return to the evaporator 25 to complete the refrigeration cycle. In this control mode, when the chilled water system 10 cannot meet the cooling capacity demand of the system, the low-power and high-efficiency natural cooling fluorine pump system 20 can be used to supplement cooling instead of increasing the flow rate of chilled water, thereby achieving the purpose of reducing system power consumption. When the outdoor ambient temperature is higher than the second preset temperature value (for example, the outdoor ambient temperature is higher than the indoor return air temperature), only the chilled water system 10 may be turned on to perform temperature control.

[0045] At this time, the outdoor host of the chilled water system 10 (chiller 11, heat exchange module 14) obtains low-temperature chilled water with cold capacity through mechanical refrigeration, flows into the system from the chilled water inlet pipe 2520, and flows into the chilled water coil 252 of the indoor unit through the fifth control valve 12. In the evaporator 25, the chilled water coil 252 exchanges heat with the indoor return air, absorbs the heat of the indoor return air, and then returns to the outdoor host end of the chilled water system 10 through the fourth control valve 13.

[0046] The evaporator and air conditioning system provided in the embodiments of the present application adopt an evaporator structure with multiple cold sources, which can make full use of natural resources, reduce energy consumption, and realize multiple temperature control modes. By rationally setting the internal structure of the evaporator, the operational stability and reliability of the air conditioning system are improved. The evaporator provided in the embodiments of the present application has a staggered arrangement of the chilled water coil and the refrigerant coil, and the chilled water inlet pipe is closer to the air inlet side of the evaporator, and the refrigerant outlet pipe is closer to the air outlet side of the evaporator, which can effectively reduce the power consumption of the fluorine pump system. For example, if the evaporator return air first passes through multiple rows of chilled water coils, the indoor return air temperature will be too low, and then passing through multiple rows of refrigerant coils will cause the fluorine pump power consumption to be too high. It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further constraints, an element defined by the phrase "comprises a..." does not exclude the existence of other identical elements in the process, method, article or apparatus that includes the element.

[0047] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An evaporator for an air conditioning system, characterized in that: It includes a chilled water coil and a refrigerant coil, the chilled water coil is connected to the heat exchange module and is used to circulate circulating water, the heat exchange module obtains chilled water by exchanging heat with the chilled water unit; the refrigerant coil is used to connect with the fluorine pump to circulate the refrigerant; the chilled water coil includes a chilled water inlet pipe and a chilled water outlet pipe that are connected, the refrigerant coil includes a refrigerant inlet pipe and a refrigerant outlet pipe that are connected, the chilled water inlet pipe, the refrigerant inlet pipe, the chilled water outlet pipe, and the refrigerant outlet pipe are arranged in sequence, and the chilled water inlet pipe is arranged close to the air inlet side of the evaporator, and the refrigerant outlet pipe is arranged close to the air outlet side of the evaporator.

2. The evaporator according to claim 1, wherein The evaporator includes at least one evaporator unit, each of which includes multiple chilled water coil units and multiple refrigerant coil units; the liquid inlets of the multiple chilled water coil units are respectively connected to the liquid outlets of the heat exchange module, and the liquid outlets of the multiple chilled water coil units are respectively connected to the liquid inlet of the heat exchange module; the liquid outlets of the multiple refrigerant coil units are respectively connected to the liquid inlet of the fluorine pump, and the liquid inlets of the multiple refrigerant coil units are respectively connected to the liquid outlet of the fluorine pump.

3. The evaporator according to claim 2, wherein The chilled water inlet pipe of each chilled water coil unit includes a plurality of first inlet pipe units arranged in parallel, and the plurality of first inlet pipe units are sequentially connected end to end to form a serpentine chilled water inlet pipe; the chilled water outlet pipe of each chilled water coil unit includes a plurality of first outlet pipe units arranged in parallel, and the plurality of first outlet pipe units are sequentially connected end to end to form a serpentine chilled water outlet pipe, and at the same time, the outlet of the chilled water inlet pipe is connected to the inlet of the chilled water outlet pipe; The refrigerant liquid inlet pipe of each refrigerant coil unit includes a plurality of second liquid inlet pipe units arranged in parallel, and the plurality of second liquid inlet pipe units are sequentially connected end to end to form a serpentine refrigerant liquid inlet pipe; the refrigerant liquid outlet pipe includes a plurality of second liquid outlet pipe units arranged in parallel, and the plurality of second liquid outlet pipe units are sequentially connected end to end to form a serpentine refrigerant liquid outlet pipe, and the liquid outlet of the refrigerant liquid inlet pipe is connected to the liquid inlet of the refrigerant liquid outlet pipe; Each of the evaporator units is sequentially arranged with the chilled water inlet pipe, the refrigerant inlet pipe, the chilled water outlet pipe and the refrigerant outlet pipe from the air inlet side to the air outlet side.

4. The evaporator according to claim 2, wherein The evaporator includes two evaporator units, which are arranged at an angle, and each evaporator unit is arranged tilted relative to the air inlet direction.

5. The evaporator according to claim 4, characterized in that The angle between the two evaporator units is not less than 30°.

6. The evaporator according to claim 4, wherein The evaporator is respectively supplied with air from outside to inside of the two evaporator units.

7. An air conditioning system, characterized in that: The evaporator comprises the evaporator according to any one of claims 1 to 6.

8. The air conditioning system according to claim 7, wherein: It includes a chilled water system and a fluorine pump system. The chilled water system includes the chilled water unit, the heat exchange module and the chilled water coil; the fluorine pump system includes the fluorine pump, the expansion valve, the refrigerant coil and the condenser forming a circulation loop.

9. The air conditioning system according to claim 8, wherein: It also includes a liquid storage tank, which is connected between the condenser and the fluorine pump. A liquid storage tank inlet pipe and a liquid storage pipe outlet pipe are respectively provided at the bottom of the liquid storage tank. A subcooling pipe is provided between the liquid storage tank inlet pipe and the liquid storage tank outlet pipe. A first one-way valve is provided on the subcooling pipe. A first control valve is provided between the liquid storage tank inlet pipe and the condenser; a second control valve and a second one-way valve are provided between the condenser and the refrigerant coil; bypass pipes are connected to both ends of the fluorine pump, a third one-way valve is provided on the bypass pipe, and a third control valve is provided between the fluorine pump and the expansion valve.

10. The air conditioning system according to claim 7, wherein: The inlet end of the chilled water unit is connected in series with a fourth control valve, and the outlet end of the chilled water unit is connected in series with a fifth control valve.

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