Integrated natural cooling air conditioning unit

Abstract

The utility model provides an integrated natural cooling air conditioning unit which specifically comprises an air conditioning case, the air conditioning case comprises an indoor case body and an outdoor case body which are tightly attached to each other, at least one pair of air inlet and air outlet is formed in the opposite surfaces of the indoor case body, an indoor fan is arranged between the air inlet and the air outlet, and an air exchange opening is formed in the surface of the outdoor case body; an outdoor fan is arranged at the air exchange port; the surface air cooler coil pipe is arranged between the air inlet and the air outlet in the indoor box body; the dry cooler coil pipe is arranged at the air exchange port in the outdoor box body, one end of the dry cooler coil pipe is connected with one end of the surface air cooler coil pipe through a first pipeline, and the other end of the surface air cooler coil pipe is connected with the other end of the dry cooler coil pipe through a second pipeline; the evaporator is arranged between the indoor fan and the air inlet in the indoor box body; the compressor is arranged in the air conditioner case and is connected with the evaporator through a pipeline; and the plate heat exchanger is arranged in the air conditioner case and is used for carrying out heat exchange on the evaporator.

Description

Technical Field

[0001] The present application relates to the field of air-conditioning equipment, and in particular to an integrated natural cooling air-conditioning unit. Background Art

[0002] To maintain a constant temperature in data center rooms, computer room air conditioning (CRAs) require year-round cooling. As a result, CRAs are the largest electricity consumer in data centers, after IT equipment. Therefore, effectively utilizing outdoor natural cooling is a key issue. Currently, data centers utilize dual-source natural cooling units. When outdoor temperatures are low, dry coolers cool an ethylene glycol solution or similar antifreeze. This coolant is then pumped and piped to the surface cooler coils within the computer room to cool the data center. When outdoor temperatures are high, compression cooling is employed, allowing the high-temperature solution to condense and dissipate heat for the compressor system.

[0003] The existing technical solution theoretically utilizes outdoor natural cooling sources at low temperatures, but in actual implementation, since the indoor unit, outdoor unit, and water pump box are installed separately, in order to adapt to different sites and different pipe lengths and the height difference between indoor and outdoor, the water pump head is designed to be very high, so the water pump power consumption is very large. In addition, the water pump needs to operate at high and low temperatures outdoors, so the water pump energy consumption is also relatively high, and the actual natural cooling energy-saving effect cannot be brought into play. Utility Model Content

[0004] The present application provides an integrated natural cooling air-conditioning unit with a short pipe length, which can reduce energy consumption. The specific structure includes: an air-conditioning case, the air-conditioning case including an indoor case body and an outdoor case body that are closely attached to each other, at least one pair of air inlets and air outlets being opened on opposite surfaces of the indoor case body, an indoor fan being arranged between the air inlet and the air outlet, an air exchange port being arranged on the surface of the outdoor case body, and an outdoor fan being arranged at the air exchange port;

[0005] The surface cooler coil is arranged between the air inlet and the air outlet in the indoor box, and is used to exchange heat with the air entering the indoor box; the dry cooler coil is arranged at the air exchange outlet in the outdoor box, the dry cooler coil is connected to the surface cooler coil through a first pipe and a second pipe to form a heat exchange circuit, and the dry cooler coil is used to exchange heat with the refrigerant in the surface cooler coil; the evaporator is arranged between the indoor fan and the air inlet in the indoor box, and the evaporator is connected to a compressor pipeline arranged in the indoor box or the outdoor box; the heat exchanger is arranged in the indoor box or the outdoor box, the heat exchanger includes a first tube bundle and a second tube bundle, the first tube bundle is connected to the compressor and the evaporator pipeline to form a heat exchange circuit, the second tube bundle is connected to the second pipeline through a pipeline, and is connected to the first pipeline through a pipeline, so that the second tube bundle and the dry cooler coil form a cooling circuit; the expansion valve is arranged on the pipeline connecting the first tube bundle and the evaporator.

[0006] With the above-mentioned specific structure, the air-conditioning chassis is an integrated chassis, the distance between the dry cooler coil and the surface cooler coil is relatively close, and at the same time, the installation position of the plate heat exchanger is also relatively close to the dry cooler coil, so that the length of the pipeline in the unit is short, thereby reducing the resistance of the coolant therein and reducing the energy consumption of the water pump.

[0007] As a possible implementation, the plate heat exchanger includes a hot circuit and a cooling circuit, one end of the hot circuit is connected to the compressor pipeline, and the other end of the hot circuit is connected to the evaporator pipeline, one end of the cooling circuit is connected to the second pipeline through a pipeline, and the other end of the cooling circuit is connected to the first pipeline through a pipeline.

[0008] As a possible implementation, an expansion valve is provided on the pipeline connecting the other end of the heat circuit to the evaporator; and the pipeline connecting one end of the cooling circuit to the second pipeline is connected to the second pipeline via a three-way valve.

[0009] As a possible implementation, the second pipeline is provided with a ball valve, a filter, a liquid filling valve, a water pump and a one-way valve.

[0010] As a possible implementation, the dry cooler coil is arranged in a V-shape at the air exchange port.

[0011] By adopting the above possible implementation method, the dry cooler coil is V-shaped, which can increase the heat exchange area, fully utilize free cooling, and improve free cooling efficiency.

[0012] The present application also provides an integrated natural cooling air-conditioning unit, which has a short pipe length and can reduce energy consumption. The specific structure includes: an air-conditioning case, the air-conditioning case includes an indoor case body and an outdoor case body that are closely attached to each other, at least one pair of air inlets and air outlets are opened on the opposite surfaces of the indoor case body, an indoor fan is arranged between the air inlet and the air outlet, an air exchange port is arranged on the surface of the outdoor case body, and an outdoor fan is arranged at the air exchange port; a surface cooler coil is arranged between the air inlet and the air outlet in the indoor case body, and is used for heat exchange of the air entering the indoor case body; a dry cooler coil is arranged in the At the air exchange port in the outdoor box, the dry cooler coil is connected to the surface cooler coil through a first pipeline and a second pipeline to form a heat exchange circuit, and the dry cooler coil is used to exchange heat with the coolant in the surface cooler coil; the evaporator is arranged between the indoor fan and the air inlet in the indoor box, and the evaporator is connected to a compressor pipeline arranged in the indoor box or the outdoor box; the condenser is arranged at the air exchange port, and the condenser is connected to the compressor and the evaporator pipeline to form a heat exchange circuit; the expansion valve is arranged on the pipeline connecting the condenser and the evaporator.

[0013] As a possible implementation, an expansion valve is provided on the pipeline connecting the other end of the condenser to the evaporator.

[0014] As a possible implementation, the second pipeline is provided with a ball valve, a filter, a liquid filling valve, a water pump and a one-way valve.

[0015] As a possible implementation, the dry cooler coil is arranged in a V-shape at the air exchange port.

[0016] By adopting the above possible implementation method, the dry cooler coil is V-shaped, which can increase the heat exchange area, fully utilize free cooling, and improve free cooling efficiency.

[0017] As a possible implementation, it is characterized in that the condenser is arranged in a V-shape at the air exchange port.

[0018] By adopting the above possible implementation method, the V-shaped condenser can increase the heat exchange area, fully utilize the free cooling, and improve the free cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further illustrates the various technical features of the present application and the relationships between them with reference to the accompanying drawings. The accompanying drawings are exemplary, and some technical features are not shown in actual proportion. In addition, some drawings may omit technical features that are commonly used in the technical field to which the present application belongs and are not essential for understanding and implementing the present application, or additional technical features that are not essential for understanding and implementing the present application may be shown. In other words, the combination of the various technical features shown in the accompanying drawings is not intended to limit the present application. In addition, throughout the present application, the same figure numbers refer to the same content. The specific description of the drawings is as follows:

[0020] Figure 1 Three views (front view, right view, and top view) of the integrated natural cooling air-conditioning unit involved in the first embodiment of the present application;

[0021] Figure 2 This is a structural diagram of an integrated natural cooling air-conditioning unit according to the first embodiment of the present application;

[0022] Figure 3 Three views (front view, right view, and top view) of the integrated natural cooling air-conditioning unit involved in the second embodiment of the present application;

[0023] Figure 4 This is a structural diagram of the integrated natural cooling air-conditioning unit involved in the second embodiment of the present application.

[0024] Explanation of the accompanying drawings: 10-compressor; 20-water pump; 30-heat exchanger; 31-first tube bundle; 32-second tube bundle; 40-electrical control box; 50-evaporator; 60-surface cooler coil; 70-dry cooler coil; 80-condenser; 90-expansion valve; 100-air conditioning chassis; 110-indoor box; 111-indoor fan; 112-air inlet; 113-air outlet; 120-outdoor box; 121-outdoor fan; 122-air exchange outlet; 200-second pipeline; 210-ball valve; 220-filter; 230-liquid filling valve; 240-check valve; 300-first pipeline. DETAILED DESCRIPTION

[0025] Below, the specific implementation methods of the present application are described in detail with reference to the accompanying drawings.

[0026] The present application provides an integrated natural cooling air-conditioning unit, including multiple preferred embodiments, among which the first embodiment and the second embodiment will be introduced in detail.

[0027] The first embodiment of the integrated free cooling air conditioning unit provided in the present application includes an air conditioning case 100 .

[0028] Among them, Figure 1As shown, the air conditioning case 100 includes an indoor case 110 and an outdoor case 120 that are closely attached to each other. At least one pair of air inlets 112 and air outlets 113 are formed on opposing surfaces of the indoor case 110. An indoor fan 111 is disposed between the air inlet 112 and the air outlet 113. The indoor fan 111 is configured to blow air entering through the air inlet 112 out of the air outlet 113, thereby achieving an air circulation effect. An air exchange port 122 is disposed on the surface of the outdoor case 120. An outdoor fan 121 is disposed at the air exchange port 122. The outdoor fan 121 is configured to blow cool air from the outdoor environment into the air conditioning unit through the air exchange port 122.

[0029] In this embodiment, if Figure 1 As shown, the air inlet 112 is located at the upper end of the air conditioning case 100, and the air outlet 113 is located at the lower end of the air conditioning case 100. In addition, in other embodiments, the air inlet 112 and the air outlet 113 can be set at other positions of the air conditioning case 100.

[0030] Among them, such as Figure 1 As shown, a surface cooler coil 60 is provided between the air inlet 112 and the air outlet 113 in the indoor box 110 for performing heat exchange on the air entering the air conditioning unit from the air inlet 112, thereby achieving a cooling effect.

[0031] Among them, such as Figure 2 As shown, a dry cooler coil 70 is provided at the air exchange port 122 in the outdoor box 120. One end of the dry cooler coil 70 is connected to one end of the surface cooler coil 60 through a first pipeline 300, and the other end of the surface cooler coil 60 is connected to the other end of the dry cooler coil 70 through a second pipeline 200.

[0032] Among them, such as Figure 1 As shown, an evaporator 50 is further provided between the indoor fan 111 and the air inlet 112 in the indoor box 110. The evaporator 50 is used to cool the high-temperature air entering through the air inlet 112.

[0033] Among them, such as Figure 1 As shown, the compressor 10 is disposed in the air conditioning cabinet 100 and is connected to the evaporator 50 by a pipeline. The compressor 10 is used to compress the refrigerant from the evaporator 50.

[0034] Among them, such as Figure 1 As shown, the heat exchanger 30 is disposed in the air conditioning cabinet 100 and is used to perform heat exchange for the evaporator 50. Figure 2As shown, the heat exchanger 30 includes a first tube bundle 31 and a second tube bundle 32. One end of the first tube bundle 31 is connected to the compressor 10 by piping, and the other end of the first tube bundle 31 is connected to the evaporator 50 by piping. One end of the second tube bundle 32 is connected to the second pipeline 200 by piping, and the other end of the second tube bundle 32 is connected to the first pipeline 300 by piping. The refrigerant passing through the compressor 10 dissipates heat through one end of the first tube bundle 31 of the heat exchanger 30.

[0035] In this embodiment, the heat exchanger 30 is a plate heat exchanger. In addition, in other embodiments, other types of heat exchangers may also be used, such as a shell and tube heat exchanger, a fin heat exchanger, etc.

[0036] Among them, Figure 2 As shown, an expansion valve 90 is provided on the pipeline connecting the other end of the first tube bundle 31 to the evaporator 50. The pipeline connecting one end of the second tube bundle 32 to the second pipeline 200 is connected to the second pipeline 200 via a three-way valve.

[0037] In this embodiment, the second pipeline 200 is provided with a ball valve 210, a filter 220, a liquid filling valve 230, a water pump 20 and a one-way valve 240 to ensure the normal operation of the coolant in the pipeline.

[0038] In this embodiment, if Figure 1 As shown, the dry cooler coil 70 is arranged in a V-shape at the air exchange port 122. The V-shaped design can increase the contact area between the dry cooler coil 70 and the air, thereby increasing its heat exchange efficiency.

[0039] The air conditioning case 100 further includes an electric control box 40. The electric control box 40 is used to control the operation of the integrated natural cooling air conditioning unit according to the embodiment of the present application.

[0040] In this embodiment, if Figure 1 As described above, the electric control box 40 is located in the indoor box 110. In addition, in other embodiments, the electric control box 40 may also be placed in the outdoor box 120 according to specific needs.

[0041] The first embodiment of the integrated natural cooling air-conditioning unit provided in this application includes three cooling modes, specifically:

[0042] 1) Pure natural cooling mode: During low-temperature cold periods, turn on the indoor fan 111 and outdoor fan 121, and do not turn on the water pump 20 or the compressor 10. The cooling medium circulation is as follows: the medium is transported to the dry cooler by the water pump 20, cooled by the outdoor low-temperature air, and then enters the indoor surface cooler coil 60 to exchange heat with the indoor return hot air. After the heat exchange, the medium is returned to the dry cooler through the water pump 20 for cooling again, thus completing the natural cooling cycle. At the same time, the air circulation is as follows: the indoor return high-temperature air returns to the return air outlet of the unit, passes through the filter 220, exchanges heat with the surface cooler coil 60, and the cooling medium takes away the heat of the indoor return air. After the indoor air is cooled, it is sent into the room through the air outlet by the indoor fan 111; the outdoor low-temperature air passes through the dry cooler coil 70, absorbs the heat of the medium, and is then discharged by the outdoor fan 121.

[0043] 2) Hybrid mode: If mode 1) does not meet the cooling requirements, compressor 10 can be restarted to compress the refrigerant. The compressed refrigerant exchanges heat with the cooling medium in heat exchanger 30 to form a high-pressure, room-temperature liquid refrigerant. It then passes through a throttling device and becomes a low-pressure, low-temperature liquid. It then returns to evaporator 50 and exchanges heat with the return air cooled by the surface cooler coil 60 to reduce its temperature. After evaporation, the low-pressure, low-temperature gaseous refrigerant returns to compressor 10, completing the compressor 10 refrigeration cycle. At this point, the cooling medium is cooled by the dry cooler coil 70 and is divided into two parts. One part enters the surface cooler coil 60 to cool the return air, while the other part passes through the heat exchanger 30 to cool the refrigerant. Finally, both parts are collected together and passed through water pump 20 to be cooled again in the dry cooler.

[0044] 3) Compressor 10 mode: When the outdoor ambient temperature is high, based on mode 2), the cooling medium is cooled by the dry cooler coil 70 and then passes through the heat exchanger 30 for refrigerant cooling. The high-temperature return air is completely cooled by the evaporator 50, forming a pure mechanical cooling mode.

[0045] In addition, the second embodiment of the integrated natural cooling air-conditioning unit provided in the present application includes an air-conditioning case 100 .

[0046] Among them, such as Figure 3 As shown, the air-conditioning case 100 includes an indoor case 110 and an outdoor case 120 that are closely attached to each other. At least one pair of air inlets 112 and air outlets 113 are provided on the relative surfaces of the indoor case 110, and an indoor fan 111 is arranged between the air inlet 112 and the air outlet 113. An air exchange port 122 is provided on the surface of the outdoor case 120, and an outdoor fan 121 is provided at the air exchange port 122.

[0047] Among them, such as Figure 3As shown, a surface cooler coil 60 is provided between the air inlet 112 and the air outlet 113 in the indoor box 110 for performing heat exchange on the air entering the air conditioning unit from the air inlet 112, thereby achieving a cooling effect.

[0048] Among them, Figure 4 As shown, a dry cooler coil 70 is provided at the air exchange port 122 in the outdoor box 120. One end of the dry cooler coil 70 is connected to one end of the surface cooler coil 60 through a first pipeline 300, and the other end of the surface cooler coil 60 is connected to the other end of the dry cooler coil 70 through a second pipeline 200.

[0049] Among them, Figure 3 As shown, an evaporator 50 is disposed between an indoor fan 111 and an air inlet 112 within the indoor housing 110. A compressor 10 is disposed within the air conditioning housing 100, and is connected to the evaporator 50 via a pipeline. A condenser 80 is disposed at the air exchange port 122 within the outdoor housing 120. One end of the condenser 80 is connected to the compressor 10 via a pipeline, and the other end of the condenser 80 is connected to the evaporator 50 via a pipeline. An expansion valve 90 is disposed on the pipeline connecting the other end of the condenser 80 to the evaporator 50.

[0050] In this embodiment, if Figure 4 As shown, the second pipeline 200 is provided with a ball valve 210 , a filter 220 , a liquid adding valve 230 , a water pump 20 and a one-way valve 240 .

[0051] In this embodiment, if Figure 3 As shown, the dry cooler coil 70 is arranged in a V-shape at the air exchange port 122. The V-shaped design can increase the contact area between the dry cooler coil 70 and the air, thereby increasing its heat exchange efficiency.

[0052] In this embodiment, if Figure 3 As shown, the condenser 80 is arranged in a V-shape at the air exchange port 122. The V-shaped design can increase the contact area between the condenser 80 and the air, thereby increasing its heat exchange efficiency.

[0053] The air conditioning case 100 further includes an electric control box 40. The electric control box 40 is used to control the operation of the integrated natural cooling air conditioning unit according to the embodiment of the present application.

[0054] In this embodiment, if Figure 3 As shown, the electric control box 40 is located in the indoor box 110. In addition, in other embodiments, the electric control box 40 can also be placed in the outdoor box 120 according to specific needs.

[0055] The second embodiment of the integrated natural cooling air-conditioning unit provided in this application includes three cooling modes, specifically:

[0056] 1) Pure natural cooling mode, during low-temperature cold periods, turn on the indoor fan 111 and outdoor fan 121, and do not turn on the water pump 20 or the compressor 10. The cooling medium circulation is as follows: the medium is transported to the dry cooler by the water pump 20, cooled by the outdoor low-temperature air, and then enters the indoor surface cooler coil 60 to exchange heat with the indoor return hot air. After the heat exchange, the medium is returned to the dry cooler through the water pump 20 for cooling again, thus completing the natural cooling cycle. At the same time, the air circulation is as follows: the indoor return high-temperature air returns to the return air outlet of the unit, passes through the filter 220, exchanges heat with the surface cooler coil 60, and the cooling medium takes away the heat of the indoor return air. After the indoor air is cooled, it is sent into the room through the air outlet by the indoor fan 111; the outdoor low-temperature air passes through the dry cooler coil 70, absorbs the heat of the medium, and is then discharged by the outdoor fan 121.

[0057] 2) Hybrid mode. When mode 1) does not meet the refrigeration requirements, the compressor 10 can be turned on again to compress the refrigerant through the compressor 10. The compressed refrigerant exchanges heat with the cooling medium in the condenser 80 to form a high-pressure, room-temperature liquid refrigerant, and then passes through the throttling device to become a low-pressure, low-temperature liquid state and returns to the evaporator 50 to exchange heat with the return air cooled by the surface cooler coil 60 to reduce the temperature. The low-pressure, low-temperature gaseous refrigerant after evaporation returns to the compressor 10 again to form a compressor 10 refrigeration cycle.

[0058] 3) Compressor 10 mode: when the outdoor ambient temperature is high, based on mode 2), the water pump 20 is turned off, the water system stops working, and the high-temperature indoor return air is cooled entirely by the evaporator 50, while the outdoor side is cooled entirely by the condenser 80.

[0059] Compared with the first embodiment provided in this application, the difference between the second embodiment provided in this application is:

[0060] 1. In the second embodiment of the integrated natural cooling air-conditioning unit provided in the present application, a condenser 80 is provided at the air exchange port 122 in the outdoor box 120 , and a heat exchanger 30 is no longer provided in the indoor box 110 .

[0061] 2. In the second embodiment of the integrated free-cooling air conditioning unit provided herein, a condenser 80 is added above the dry cooler, eliminating the heat exchanger 30, making the free-cooling system and the compressor 10 refrigeration system independent. In compressor 10 mode, the water system pump 20 is shut down, and heat dissipation from the compressor 10 system is directly handled by the condenser 80, eliminating a single heat exchange step and reducing energy consumption.

[0062] In summary, the two integrated free-cooling air conditioning unit embodiments provided herein organically combine free-cooling and mechanical cooling, improving overall cooling efficiency. Compared to conventional solutions, where the dry cooler and water pump box are located outdoors and the indoor unit is located inside the machine room, the average length of pipes required for on-site connection exceeds 20 meters. Furthermore, there is often a significant height difference between the dry cooler and the indoor unit, making water system resistance assessment highly inaccurate. Therefore, to ensure system operation, a high-power water pump must be selected, resulting in higher energy consumption for the overall air conditioning system. The integrated free-cooling air conditioning unit embodiments of the present application, by compactly arranging various systems, effectively controls the length of the water system pipes during the design phase, generally within 10 meters. This allows for accurate calculation of system resistance and precise selection of water pumps. Testing has shown that water pump power is reduced to 50% of that of conventional solutions, resulting in significant energy savings when the air conditioning unit is in continuous operation. Furthermore, existing technical solutions require on-site construction work such as connecting water pipes and adding solutions, making on-site construction quality difficult to control and prone to problems such as leaks and solution contamination. The two integrated natural cooling air conditioning unit embodiments provided in this application utilize a modular, prefabricated installation model, optimizing on-site construction, overcoming the aforementioned specific issues, and improving the unit's reliability and affordability. Finally, the embodiments of this application support the placement of components such as the compressor and heat exchanger in the indoor or outdoor enclosure, enhancing the unit's installation flexibility and maintainability while also catering to a wider range of usage scenarios and enhancing the user experience.

[0063] The term "comprising" used throughout this application should not be interpreted as being restricted to what is listed thereafter; it does not exclude other structural elements or steps.

[0064] It can be understood that those skilled in the art can combine the features mentioned in one or more embodiments mentioned throughout the present application with the features of other embodiments in any appropriate manner to implement the present application.

[0065] Note that the above are only preferred embodiments of the present application and the technical principles employed. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the technical concept of the present application, all of which fall within the scope of protection of the present application.

Claims

1. An integrated natural cooling air conditioning unit, characterized in that: include: An air conditioning case, the air conditioning case comprising an indoor case body and an outdoor case body that are closely attached to each other, at least one pair of air inlets and air outlets being formed on opposing surfaces of the indoor case bodies, an indoor fan being disposed between the air inlets and the air outlets, an air exchange port being disposed on a surface of the outdoor case body, and an outdoor fan being disposed at the air exchange port; A surface cooler coil is provided between the air inlet and the air outlet in the indoor box, and is used to perform heat exchange on the air entering the indoor box; a dry cooler coil, disposed at the air exchange port in the outdoor box, the dry cooler coil being connected to the surface cooler coil via a first pipe and a second pipe to form a heat exchange loop, the dry cooler coil being used to perform heat exchange with the coolant in the surface cooler coil; An evaporator is provided in the indoor box between the indoor fan and the air inlet, and the evaporator is connected to a compressor pipeline provided in the indoor box or the outdoor box; a heat exchanger disposed in the indoor box or the outdoor box, the heat exchanger comprising a first tube bundle and a second tube bundle, the first tube bundle being connected to the compressor and the evaporator pipelines to form a heat exchange loop, the second tube bundle being connected to the second pipeline via a pipeline and to the first pipeline via a pipeline, thereby forming a cooling loop with the dry cooler coil; The expansion valve is arranged on the pipeline connecting the first tube bundle and the evaporator.

2. The integrated natural cooling air conditioning unit according to claim 1, characterized in that: The pipeline connecting the second tube bundle and the second pipeline is connected to the second pipeline through a three-way valve.

3. The integrated natural cooling air conditioning unit according to claim 1, characterized in that: The second pipeline is provided with a ball valve, a filter, a liquid filling valve, a water pump and a one-way valve.

4. The integrated natural cooling air conditioning unit according to claim 1, characterized in that: The dry cooler coil is V-shaped and arranged at the air exchange port.

5. An integrated natural cooling air conditioning unit, characterized in that: include: An air conditioning case, the air conditioning case comprising an indoor case body and an outdoor case body that are closely attached to each other, at least one pair of air inlets and air outlets being formed on opposing surfaces of the indoor case bodies, an indoor fan being disposed between the air inlets and the air outlets, an air exchange port being disposed on a surface of the outdoor case body, and an outdoor fan being disposed at the air exchange port; A surface cooler coil is provided between the air inlet and the air outlet in the indoor box, and is used to perform heat exchange on the air entering the indoor box; a dry cooler coil, disposed at the air exchange port in the outdoor box, the dry cooler coil being connected to the surface cooler coil via a first pipe and a second pipe to form a heat exchange loop, the dry cooler coil being used to perform heat exchange with the coolant in the surface cooler coil; An evaporator is provided in the indoor box between the indoor fan and the air inlet, and the evaporator is connected to a compressor pipeline provided in the indoor box or the outdoor box; A condenser is provided at the air exchange port, and the condenser is connected to the compressor and the evaporator pipeline to form a heat exchange circuit; The expansion valve is arranged on the pipeline connecting the condenser and the evaporator.

6. The integrated natural cooling air conditioning unit according to claim 5, characterized in that: The second pipeline is provided with a ball valve, a filter, a liquid filling valve, a water pump and a one-way valve.

7. The integrated natural cooling air conditioning unit according to claim 5, characterized in that: The dry cooler coil is V-shaped and arranged at the air exchange port.

8. The integrated natural cooling air conditioning unit according to claim 5, characterized in that: The condenser is V-shaped and arranged at the air exchange port.

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