Fluorine pump integrated air conditioner suitable for multi-layer data center

Abstract

The application discloses a fluorine pump integrated air conditioner suitable for multi-layer data centers, which can reduce energy consumption, increase exhaust pressure, reduce hot air backflow, improve cooling efficiency and prolong the service life of core components. The fluorine pump integrated air conditioner comprises an outdoor unit body matched with an indoor unit body, wherein the outdoor unit body comprises a lower unit, an upper unit and a condensation exhaust unit arranged at the side of the lower unit and the upper unit. The lower unit comprises a lower condenser arranged at a first layer, a lower liquid accumulator, a lower fluorine pump, a first compressor, a second compressor, a first electric control valve, a second electric control valve and an electric control cabinet. The upper unit comprises an upper condenser arranged in a second layer above the first layer, an upper liquid accumulator, an upper fluorine pump, a third electric control valve and a fourth electric control valve. The heat exchange area of the upper condenser is larger than that of the lower condenser. The condensation exhaust unit comprises a plurality of fans distributed in the vertical direction, and the fans are located in the first layer and the second layer and correspond to the air outlets of the lower condenser and the upper condenser.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an integrated air conditioner with a refrigerant pump suitable for multi-story data centers. Background Technology

[0002] A multi-story data center (MSC) refers to a building structure that distributes key data center facilities (such as server rooms, power systems, and cooling systems) across multiple floors or vertical spaces. Compared to traditional single-story, flat-layout data centers, it features high density, compactness, and urban development capabilities, making it suitable for scenarios with limited land resources, urban centers, or those requiring rapid expansion. To ensure the stability of equipment operation in a multi-story data center, real-time cooling is necessary to prevent overheating and damage. Fluorine pump integrated air conditioning (i.e., fluorine pump natural cooling air conditioning system) has become one of the most attractive mainstream cooling technologies for multi-story data center construction due to its ultra-high energy efficiency, utilization of efficient heat transfer media for high-density heat dissipation, space saving, high reliability (waterless design, simplified system), modular flexibility, and good adaptability to multi-story building structures. However, traditional fluorine pump integrated air conditioning systems suffer from insufficient exhaust air pressure, leading to decreased heat exchange efficiency and significant energy loss. They are also prone to compressor overheating, shortening the lifespan of core components. Furthermore, the ineffective diffusion of exhaust air can cause hot air recirculation, further reducing cooling efficiency and increasing energy consumption. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing an integrated refrigerant pump air conditioner suitable for multi-story data centers that can reduce energy consumption, increase exhaust pressure to reduce hot air recirculation, improve cooling efficiency, and extend the service life of core components.

[0004] An integrated refrigerant pump air conditioner suitable for multi-story data centers includes an outdoor unit body. The outdoor unit body is used to cooperate with an indoor unit body arranged in a sealed space to cool the sealed space. The outdoor unit body includes:

[0005] The lower unit includes a lower condenser arranged in the first layer, a lower liquid receiver connected to the liquid outlet of the lower condenser and the evaporator of the indoor unit, a lower refrigerant pump connected to the liquid outlet of the lower liquid receiver, a first compressor connected to the gas outlet of the lower liquid receiver and the liquid inlet of the lower condenser, a second compressor, a first electrically controlled valve installed on the pipeline connecting the lower liquid receiver and the lower refrigerant pump, a second electrically controlled valve installed on the pipeline connecting the lower liquid receiver and the first compressor, and an electrical control cabinet;

[0006] The upper unit includes an upper condenser located in the second layer above the first layer, an upper liquid receiver connected to the liquid outlet of the upper condenser, an evaporator of the indoor unit, and a second compressor, an upper refrigerant pump connected to the liquid outlet of the upper liquid receiver, a third electrically controlled valve on the pipeline connecting the upper liquid receiver and the upper refrigerant pump, and a fourth electrically controlled valve on the pipeline connecting the upper liquid receiver and the second compressor; the liquid inlet of the upper condenser is connected to the second compressor, and the heat exchange area of ​​the upper condenser is larger than that of the lower condenser;

[0007] The condenser exhaust unit is arranged on the side of the lower and upper units, and includes several fans distributed in the vertical direction. Some fans are located in the first layer and correspond to the air outlet of the lower condenser, while other fans are located in the second layer and correspond to the air outlet of the upper condenser.

[0008] In one embodiment, both the upper and lower condensers are W-type condenser structures consisting of four condensing coils.

[0009] In one embodiment, the outdoor unit body further includes a first outdoor filter screen arranged on the side of the upper condenser and a second outdoor filter screen arranged on the side of the lower condenser; the upper condenser and the lower condenser are arranged in a staggered manner.

[0010] In one embodiment, the air outlet direction of each fan is horizontal, and the fans are arranged in at least two layers in the vertical direction; the condenser exhaust unit also includes multiple air outlet pipes extending in the horizontal direction and air guide pipes extending in the vertical direction and connected to each air outlet pipe. The air outlet pipes are connected to the air outlet ends of the fans one by one. The top of the air guide pipe is closed, and an exhaust port is opened on the upper side of the air guide pipe. The air guide pipe includes multiple pipe sections arranged from bottom to top and connected to each other. The inner diameter of the lower pipe section is smaller than the inner diameter of the upper pipe section.

[0011] In one embodiment, the upper side of the air duct has two oppositely arranged exhaust ports.

[0012] In one embodiment, the lower reservoir is positioned above the lower fluorine pump, and the upper reservoir is positioned above the upper fluorine pump.

[0013] In one embodiment, the outdoor unit body also includes a spray pump cabinet disposed in the first floor, and a spray pump is disposed inside the spray pump cabinet.

[0014] In one embodiment, the outdoor unit body also includes a walkway, and the lower condenser, lower refrigerant pump, electrical control cabinet and spray pump cabinet are arranged on the upper surface of the walkway. Several perforated holes are opened on the walkway, penetrating the upper and lower surfaces of the walkway.

[0015] In one embodiment, the outdoor unit body further includes a first housing disposed on the side of the lower and upper condensers away from the air outlet side and fixed to the upper surface of the walkway; a second housing disposed on the air outlet side of the lower and upper condensers and fixed to the upper surface of the walkway; and a third housing disposed between the first and second housings and covering the upper and lower condensers. The first, second, and third housings all extend from the bottom of the first layer to the top of the second layer. The fan is installed in the second housing, and the air outlet side of the fan communicates with the environment through a through hole on the side of the second housing. The upper and lower units are both housed in the third housing. The interiors of the second and third housings are connected. Outdoor maintenance doors are provided on the sides of both the first and second housings.

[0016] In one embodiment, the second chamber is provided with a ladder extending from the first floor to the second floor.

[0017] This utility model relates to an integrated refrigerant pump air conditioner suitable for multi-story data centers. Several fans are installed on the air outlet sides of the upper and lower condensers, increasing the exhaust air pressure and thus the exhaust air volume of the upper and lower condensers. This allows for timely removal of heat from the upper and lower condensers, improving the heat exchange efficiency between the air conditioner and the environment and reducing hot air recirculation. This enhances the cooling efficiency of the air conditioner, prevents overheating of the compressor due to insufficient heat dissipation, and extends the service life of core components such as the compressor. By making the heat exchange area of ​​the upper condenser larger than that of the lower condenser, the utilization rate of natural cooling on the outdoor side is improved, further enhancing the overall energy-saving effect and reducing energy consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the integrated air conditioner with a refrigerant pump from one perspective in one embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the integrated air conditioner with a refrigerant pump from another perspective in one embodiment of the present invention;

[0020] Figure 3 This is a layout diagram of the first layer of the integrated refrigerant pump air conditioner in one embodiment of the present invention;

[0021] Figure 4 This is a layout diagram of the second layer of the integrated refrigerant pump air conditioner in one embodiment of the present invention;

[0022] Figure 5 This is a layout diagram of the exhaust duct in one embodiment of the present invention. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] Please see Figure 1 and Figure 2 This utility model discloses an integrated refrigerant pump air conditioner suitable for multi-story data centers, which can reduce energy consumption, increase exhaust pressure to reduce hot air recirculation, improve cooling efficiency, and extend the service life of core components. The integrated refrigerant pump air conditioner includes an outdoor unit 10, which works in conjunction with an indoor unit arranged in a sealed space to cool the sealed space. The outdoor unit 10 and the indoor unit 10 are connected by a four-way reversing valve to switch the flow direction of the refrigerant in the pipeline, and an expansion valve to control the pressure and temperature of the refrigerant. The indoor unit 10 is arranged in the sealed space to be cooled, such as in a data center server room. The indoor unit 10 includes a chassis and an evaporator, indoor fan, air filter, and control system sensors housed within the chassis. The indoor unit 10 can be any commercially available integrated refrigerant pump air conditioner; its specific structure is not covered by this solution and will not be described in detail here. The outdoor unit body 10 includes a lower unit 100, an upper unit 200, and a condenser exhaust unit 300 arranged on the side of the lower unit 100 and the upper unit 200. In this way, the arrangement of the condenser exhaust unit 300 on the side of the upper unit 200 and the lower unit 100 facilitates factory installation and reduces the equipment's requirement for the height of the equipment room.

[0025] For specific details, please refer to... Figure 1-5In this embodiment, the lower unit 100 includes a lower condenser 110 arranged in the first layer, a lower liquid reservoir 120 connected to the liquid outlet of the lower condenser 110 and the evaporator of the indoor unit body, a lower refrigerant pump 130 connected to the liquid outlet of the lower liquid reservoir 120, a first compressor 140 connected to the gas outlet of the lower liquid reservoir 120 and the liquid inlet of the lower condenser 110, a second compressor 150, a first electrically controlled valve (not shown) provided on the pipeline connecting the lower liquid reservoir 120 and the lower refrigerant pump 130, a second electrically controlled valve (not shown) provided on the pipeline connecting the lower liquid reservoir 120 and the first compressor 140, and an electrical control cabinet 160. The upper unit 200 includes an upper condenser 210 arranged in the second layer above the first layer, an upper liquid receiver 220 connected to the liquid outlet of the upper condenser 210, the evaporator of the indoor unit, and the second compressor 150, an upper refrigerant pump 230 connected to the liquid outlet of the upper liquid receiver 220, a third electrically controlled valve (not shown) provided on the pipeline connecting the upper liquid receiver 220 and the upper refrigerant pump 230, and a fourth electrically controlled valve (not shown) provided on the pipeline connecting the upper liquid receiver 220 and the second compressor 150; the liquid inlet of the upper condenser 210 is connected to the second compressor 150, and the heat exchange area of ​​the upper condenser 210 is larger than that of the lower condenser 110. In this embodiment, the lower liquid receiver 120 is positioned above the lower refrigerant pump 130, and the upper liquid receiver 220 is positioned above the upper refrigerant pump 230, facilitating the gravity flow of refrigerant from the lower liquid receiver 120 into the lower refrigerant pump 130 and vice versa. The condenser exhaust unit 300 includes several fans 310 distributed vertically. Some fans 310 are located in the first layer and correspond to the air outlet of the lower condenser 110, while others are located in the second layer and correspond to the air outlet of the upper condenser 210. The air inlets of the lower condenser 110 and the upper condenser 210, as well as the air outlets of the fans 310, are all connected to the environment to facilitate airflow circulation.

[0026] In this embodiment, an electrical control module is installed inside the electrical control cabinet 160. This module is electrically connected to the lower condenser 110, the lower refrigerant pump 130, the first compressor 140, the second compressor 150, the first electrically controlled valve, the second electrically controlled valve, the upper condenser 210, the upper refrigerant pump 230, the third electrically controlled valve, the fourth electrically controlled valve, and each fan 310. Additionally, the module is also electrically connected to the four-way reversing valve and the control system sensors (such as temperature and humidity sensors) of the indoor unit. The module includes a PLC controller and a power supply, and is used to control the operation of the aforementioned electrical components. The first, second, third, and fourth electrically controlled valves are all electric ball valves or solenoid valves. The working mode of the integrated refrigerant pump air conditioner is switched by the electronic control module driving the four-way reversing valve. Specifically, the four-way reversing valve controls the lower liquid receiver 120 to connect with the evaporator or lower condenser 110 of the indoor unit, and at the same time controls the upper liquid receiver 220 to connect with the evaporator or upper condenser 210 of the indoor unit.

[0027] In cooling mode, the electronic control module closes the first and third electronically controlled valves, while simultaneously opening the second and fourth electronically controlled valves. Low-temperature, low-pressure gaseous refrigerant in the lower receiver 120 enters the first compressor 140, while low-temperature, low-pressure gaseous refrigerant in the upper receiver 220 enters the second compressor 150. The gaseous refrigerant is compressed by the first and second compressors 140 and 150 to form a high-temperature, high-pressure gas. The electronic control module then controls the four-way reversing valve to switch to the cooling path, directing the high-temperature gas discharged from the first and second compressors 140 and 150 to the lower condenser 110 and upper condenser 210. After entering the lower and upper condensers 110 and 210, the high-temperature, high-pressure gaseous refrigerant releases heat to the outside air under the forced ventilation of the fan 310, gradually lowering the refrigerant temperature and causing it to condense from a gaseous state into a high-temperature, high-pressure liquid. Subsequently, the high-pressure liquid refrigerant flows through the expansion valve. After throttling, the refrigerant pressure drops sharply, and the temperature decreases, transforming into a low-temperature, low-pressure gas-liquid two-phase mixture. This gas-liquid two-phase mixture enters the evaporator of the indoor unit through a pipe. Driven by the indoor fan, the indoor air circulates, causing the evaporator to absorb heat from the indoor air. The liquid refrigerant completely evaporates into a low-temperature, low-pressure gas. At this point, the cooled indoor air is blown into the room to cool the enclosed space. Then, the low-temperature, low-pressure gas returns to the suction ports of the first compressor 140 and the second compressor 150 via a four-way reversing valve, restarting the cycle.

[0028] Since this integrated refrigerant pump air conditioner is used for cooling multi-story data centers, the cooling mode of the integrated refrigerant pump air conditioner will be emphasized here. In heating mode (as required in cold regions and at cold temperatures), the electronic control module controls the opening of the first and third electronically controlled valves, while simultaneously controlling the closing of the second and fourth electronically controlled valves. At this time, the evaporator of the indoor unit acts as a condenser, and the lower condenser 110 and upper condenser 210 act as evaporators for the outdoor unit 10. The lower refrigerant pump 130 replaces the first compressor 140, and the upper refrigerant pump 230 replaces the second compressor 150. Its operation is exactly the opposite of the cooling mode, so the operation process of the integrated refrigerant pump air conditioner in heating mode will not be elaborated further here.

[0029] It should be noted that in this embodiment, by making the heat exchange area of ​​the upper condenser 210 larger than that of the lower condenser 110, system-level energy saving is achieved by enhancing the synergy between the thermodynamic gradient and the flow field. The combination of temperature stratification and heat exchange area redistribution improves the utilization rate of natural cooling. Specifically, the design of the upper condenser 210 having a larger heat exchange area than the lower condenser 110 is actually an asymmetric condenser layout. The upper condenser 210, with its larger heat exchange area in the second layer, is positioned at a higher height and can contact the lower-temperature air with a higher flow rate. After heat exchange with the atmosphere, the refrigerant temperature in the upper condenser 210 is lower than that in the lower condenser 110, achieving refrigerant temperature stratification. Furthermore, the larger heat exchange area of ​​the upper condenser 210 enhances its heat exchange effect. For multi-layer data centers that need to be cooled, there is a situation where the temperature of the upper part is higher than that of the lower part in the indoor thermal stratification (hot air rises). In this case, the upper condenser 210 with a lower refrigerant temperature cools the high-temperature area at the top, which can achieve heat transfer with a large temperature difference, improve the utilization rate of cooling capacity, and thus improve the energy-saving effect of the whole machine; the lower condenser 110 with a higher refrigerant temperature cools the low-temperature area at the bottom, which can avoid over-cooling.

[0030] In one possible implementation, the fan 310 in this embodiment can be a centrifugal fan. Traditional integrated refrigerant pump air conditioners use axial flow fans for exhaust, which have relatively insufficient air pressure. In this solution, a centrifugal fan replaces the axial flow fan. The centrifugal fan has significantly higher air pressure than the axial flow fan, and its air pressure is controlled by variable frequency drive. Through precise air pressure control, the natural cooling time of the refrigerant pump is maximized, thereby improving the energy efficiency of the integrated refrigerant pump air conditioner. It is understood that the fan 310 in this embodiment can also be other types of fans, and this application does not limit its use.

[0031] The aforementioned integrated refrigerant pump air conditioner for multi-story data centers features several fans 310 installed on the air outlet sides of the upper condenser 210 and the lower condenser 110. This increases the exhaust air pressure of the integrated refrigerant pump air conditioner, thereby increasing the exhaust air volume of the upper and lower condensers 210 and promptly removing heat from them. This improves the heat exchange efficiency between the air conditioner and the environment and reduces hot air recirculation, thus improving the cooling efficiency of the air conditioner. It also prevents overheating of the compressor due to insufficient heat dissipation, extending the service life of core components such as the compressor. By making the heat exchange area of ​​the upper condenser 210 larger than that of the lower condenser 110, the utilization rate of natural cooling on the outdoor side can be improved from a heat exchange perspective, further enhancing the overall energy-saving effect of the unit and reducing energy consumption.

[0032] In one embodiment, both the upper condenser 210 and the lower condenser 110 are W-shaped condenser structures composed of four condensing coils. This maximizes the air intake and heat exchange area of ​​the upper condenser 210 and the lower condenser 110, ensuring that the upper condenser 210 and the lower condenser 110 have sufficient heat exchange capacity and can meet the needs of the two outdoor units 10 used side by side, so as to adapt to the cooling needs of different multi-story data center scenarios.

[0033] Furthermore, the outdoor unit body 10 also includes a first outdoor filter 400 disposed on the side of the upper condenser 210 and a second outdoor filter 500 disposed on the side of the lower condenser 110. Preferably, the first outdoor filter 400 is in close contact with the side of the upper condenser 210, and the second outdoor filter 500 is in close contact with the side of the lower condenser 110. The air inlets of both the upper condenser 210 and the lower condenser 110 are located on their sides to achieve side air intake for the integrated refrigerant pump air conditioner, and both the first outdoor filter 400 and the second outdoor filter 500 are installed at the air inlets. The first outdoor filter 400 and the second outdoor filter 500 are used to prevent large particles of debris such as leaves, insects, and willow catkins from entering the fins of the upper condenser 210 and the lower condenser 110, so as to prevent the reduction of air volume caused by fin blockage and reduce the direct contact of salt spray / industrial pollutants with the fins, and prevent refrigerant leakage caused by fin perforation. In addition, the first outdoor filter 400 and the second outdoor filter 500 can also be used to maintain the design wind resistance and ensure that the fan 310 operates according to the rated curve to avoid hot air backflow caused by wind pressure imbalance. Preferably, in this embodiment, the upper condenser 210 and the lower condenser 110 are staggered. Specifically, the projection of the upper condenser 210 in the horizontal plane of the first layer does not completely coincide with the projection of the lower condenser 110 in the horizontal plane of the first layer. The angle between the length direction of the outermost condensing coil of the upper condenser 210 and the length direction of the outermost condensing coil of the lower condenser 110 is greater than 0°. In this way, the upper condenser 210 and the lower condenser 110 are staggered in the vertical direction. When maintaining the first outdoor filter 400 of the second layer, the first outdoor filter 400 can be removed by standing on the first layer and pulling it down. When maintaining the second outdoor filter 500 of the first layer, the second outdoor filter 500 can be removed by rotating it at the first layer. This facilitates maintenance and reduces the difficulty of maintaining and repairing the first outdoor filter 400 and the second outdoor filter 500.

[0034] In one embodiment, the outdoor unit body 10 further includes a spray pump cabinet 600 disposed in the first layer. The spray pump cabinet 600 houses a spray pump, which is electrically connected to the electrical control module in the electrical control cabinet 160. This spray pump is used to spray water during high-temperature periods to enhance heat dissipation. Furthermore, the outdoor unit body 10 also includes a walkway 700. The lower condenser 110, the lower refrigerant pump 130, the electrical control cabinet 160, and the spray pump cabinet 600 are arranged on the upper surface of the walkway 700. The walkway 700 has several perforated holes 710 penetrating its upper and lower surfaces. In this embodiment, the walkway 700 serves as the base of the entire refrigerant pump integrated air conditioner outdoor unit body 10, supporting the other components. By creating perforated holes 710 in the walkway 700, the structural strength of the bottom of the entire outdoor unit body 10 is ensured. When the outdoor unit body 10 is raised, air can enter from both the side and the bottom of the outdoor unit body 10, thereby increasing the outdoor air intake volume.

[0035] In one embodiment, the outdoor unit body 10 further includes a first housing 800 disposed on the side of the lower condenser 110 and the upper condenser 210 away from the air outlet side and fixed to the upper surface of the walkway 700; a second housing 900 disposed on the air outlet side of the lower condenser 110 and the upper condenser 210 and fixed to the upper surface of the walkway 700; and a third housing 810 disposed between the first housing 800 and the second housing 900 and covering the upper and lower condensers. The first, second, and third housings 900 and 810 extend from the bottom of the first layer to the top of the second layer. The fan 310 is installed inside the second housing 900, and its outlet side communicates with the environment through a through-hole on the side of the second housing 900. Both the upper and lower units are housed within the third housing 810. The interiors of the second and third housings 900 are interconnected. Outdoor access doors 910 are provided on the sides of both the first and second housings 800. Thus, the entire outdoor unit 10 is isolated from the outside by the first, second, and third housings 800, preventing accidents caused by accidental entry and avoiding damage to the unit by unauthorized personnel. When using the integrated refrigerant pump air conditioner, personnel can enter the first housing 800 or the second and third housings 900 through the outdoor access doors 910 for routine inspections or maintenance. Furthermore, the second housing 900 is equipped with a ladder 920 extending from the first layer to the second layer, allowing personnel to access the second layer via the ladder 920 and inspect or repair the devices within it. In this embodiment, the upper liquid reservoir 220 and the lower liquid reservoir 120 are located within the third housing and mounted on the side wall of the first housing 800.

[0036] In one embodiment, the air outlet direction of each fan 310 is horizontal, and the fans 310 are arranged in at least two layers in the vertical direction. Preferably, in this embodiment, the fans 310 are arranged in four layers in the vertical direction. The condensate exhaust unit 300 also includes a plurality of air outlet pipes 320 extending horizontally and a guide pipe 330 extending vertically and communicating with each air outlet pipe 320. The air outlet pipes 320 are connected to the air outlet ends of the fans 310 one by one. The top of the guide pipe 330 is closed, and an exhaust port is opened on the upper side of the guide pipe 330. The guide pipe 330 includes a plurality of pipe sections arranged from bottom to top and communicating with each other. The inner diameter of the lower pipe section is smaller than the inner diameter of the upper pipe section. By using a duct 330 composed of multiple pipe sections with progressively increasing diameters from bottom to top, gas is guided for discharge. Since the gas volume at the top is greater than at the bottom during upward flow, the progressively increasing pipe diameter ensures timely gas discharge from each fan 310. The fan 310's outlet direction is designed horizontally to facilitate coordination between the fan 310 and the outlet duct 320. By opening exhaust vents on the upper side of the duct 330, when multiple integrated refrigerant pump air conditioners are installed on different floors of a multi-layer data center, the impact of hot air discharged from the lower floor on the air intake of the upper floor can be reduced, improving cooling efficiency. Preferably, two oppositely arranged exhaust vents are provided on the upper side of the duct 330 to increase the exhaust area, facilitating timely gas discharge. Furthermore, the symmetrical arrangement of the two exhaust vents ensures uniform force distribution during exhaust, preventing swaying and improving structural stability.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fluorine pump integrated air conditioner suitable for a multi-story data center, comprising an outdoor unit body for cooperating with an indoor unit body arranged in a closed space and cooling the closed space, characterized in that, The outdoor unit body includes: The lower unit includes a lower condenser arranged in the first layer, a lower liquid receiver connected to the liquid outlet of the lower condenser and the evaporator of the indoor unit body, a lower refrigerant pump connected to the liquid outlet of the lower liquid receiver, a first compressor connected to the gas outlet of the lower liquid receiver and the liquid inlet of the lower condenser, a second compressor, a first electrically controlled valve installed on the pipeline connecting the lower liquid receiver and the lower refrigerant pump, a second electrically controlled valve installed on the pipeline connecting the lower liquid receiver and the first compressor, and an electrical control cabinet; The upper unit includes an upper condenser arranged in a second layer above the first layer, an upper liquid receiver connected to the liquid outlet of the upper condenser, the evaporator of the indoor unit body, and the second compressor, an upper refrigerant pump connected to the liquid outlet of the upper liquid receiver, a third electrically controlled valve on the pipeline connecting the upper liquid receiver and the upper refrigerant pump, and a fourth electrically controlled valve on the pipeline connecting the upper liquid receiver and the second compressor; the liquid inlet of the upper condenser is connected to the second compressor, and the heat exchange area of ​​the upper condenser is larger than that of the lower condenser; A condenser exhaust unit is arranged on the sides of the lower unit and the upper unit, and includes a number of fans distributed in a vertical direction. Some of the fans are located in the first layer and correspond to the air outlet of the lower condenser, while other fans are located in the second layer and correspond to the air outlet of the upper condenser.

2. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 1, wherein, Both the upper and lower condensers are W-shaped condenser structures consisting of four condensing coils.

3. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 1, wherein, The outdoor unit body also includes a first outdoor filter screen arranged on the side of the upper condenser and a second outdoor filter screen arranged on the side of the lower condenser; the upper condenser and the lower condenser are arranged in a staggered manner.

4. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 1, wherein, The air outlet direction of each of the aforementioned fans is horizontal, and the aforementioned fans are arranged in at least two layers in the vertical direction; the condenser exhaust unit also includes multiple air outlet pipes extending horizontally and air guide pipes extending vertically and communicating with each of the aforementioned air outlet pipes. The air outlet pipes are connected to the air outlet ends of the aforementioned fans one by one. The top of the air guide pipe is closed, and an exhaust port is opened on the upper side of the air guide pipe. The air guide pipe includes multiple pipe sections arranged from bottom to top and communicating with each other. The inner diameter of the lower pipe section is smaller than the inner diameter of the upper pipe section.

5. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 4, wherein, The upper side of the air duct has two air outlets arranged opposite each other.

6. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 1, wherein, The lower reservoir is located above the lower fluoride pump, and the upper reservoir is located above the upper fluoride pump.

7. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 1, wherein, The outdoor unit also includes a spray pump cabinet installed on the first floor, and a spray pump is installed inside the spray pump cabinet.

8. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 7, wherein, The outdoor unit body also includes a walkway. The lower condenser, the lower refrigerant pump, the electrical control cabinet, and the spray pump cabinet are arranged on the upper surface of the walkway. The walkway has several perforated holes that penetrate the upper and lower surfaces of the walkway. 9.The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 8, wherein, The outdoor unit body also includes a first housing disposed on the side of the lower condenser and the upper condenser away from the air outlet side and fixed to the upper surface of the walkway; a second housing disposed on the air outlet side of the lower condenser and the upper condenser and fixed to the upper surface of the walkway; and a third housing disposed between the first housing and the second housing and covering the upper condenser and the lower condenser. The first housing, the second housing, and the third housing all extend from the bottom of the first layer to the top of the second layer. The fan is installed in the second housing, and the air outlet side of the fan communicates with the environment through a through hole on the side of the second housing. The upper unit and the lower unit are both housed in the third housing. The interiors of the second housing and the third housing are in communication. Outdoor maintenance doors are provided on the sides of both the first housing and the second housing.

10. The fluorine pump integrated air conditioner suitable for a multi-story data center according to claim 9, wherein, The second box is equipped with a ladder extending from the first layer to the second layer.

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