Data center air handling device and method

Abstract

The present invention discloses an air treatment device and method for a data center. The device includes a shell and an air treatment unit installed in the shell. The present invention can satisfy an indirect heat exchange mode, a fresh air mode, and a mechanical refrigeration mode. The combination and switching of multiple modes can be freely selected according to parameters set by the user to maximize the use of natural cold sources. Compared with the existing technology, the device is more energy-saving and environmentally friendly and has a wider range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment, and in particular to an air treatment device and method for a data center. Background Art

[0002] A data center is a physical space that realizes centralized processing, storage, transmission, exchange, and management of information. Computer equipment, server equipment, network equipment, storage equipment, etc. are usually considered to be key equipment in the core computer room of the network. Environmental factors required for the operation of key equipment, such as power supply system, cooling system, cabinet system, fire protection system, monitoring system, etc., are usually considered to be key physical infrastructure.

[0003] Data centers are huge infrastructures that consume a lot of electricity. According to relevant statistics, data centers consumed 100 billion kWh of electricity in 2015, accounting for more than 1.5% of the total electricity consumption in the society. In the United States, the total electricity consumption in the data center field reached 91 billion kWh in 2013. According to research, the total annual electricity consumption of data centers will reach 138 billion kWh in 2020.

[0004] According to statistics from relevant organizations, electricity costs of Chinese data centers actually account for 60%-70% of the total cost of data center operation and maintenance, and the electricity costs used for air conditioning account for about 40% of this.

[0005] At present, in order to save energy, build green and energy-saving data centers, and develop data center cooling systems sustainably, both domestic and foreign countries have consistently adopted natural cooling sources, which can be divided into two categories: natural air cooling and natural water cooling. Natural air cooling is currently the most commonly used energy-saving method, which can be specifically divided into indirect evaporative cooling and direct cooling; natural water cooling is currently relatively less used at home and abroad. For example, it has been used in some data centers of Google and Alibaba, and the cooling effect is also very good. However, both natural air cooling and natural water cooling have certain limitations. For example, natural air cooling either chooses indirect evaporative cooling or direct cooling, and the energy-saving effect is not ideal. The outdoor air parameter range of natural cooling is relatively small, especially in places where the air quality is not very good, and the use time is even less. The second is indirect evaporative cooling and natural water cooling. In water-scarce areas, this solution cannot play its due role. Summary of the invention

[0006] The main purpose of the present invention is to provide an air handling device and method for a data center, aiming to maximize the use of natural cooling sources and improve the cooling effect.

[0007] To achieve the above object, the present invention provides an air handling device for a data center, comprising a shell and an air handling unit installed in the shell, wherein a first partition plate arranged horizontally is arranged in the shell, the first partition plate divides the shell into a first chamber located at the upper part and a second chamber located at the lower part, a second partition plate is arranged vertically downward at the rear end of the first chamber, the second partition plate divides the first chamber into a first chamber unit and a second chamber unit, a third partition plate is arranged at the rear end of the second chamber, the third partition plate divides the second chamber into a third chamber unit and a fourth chamber unit;

[0008] A front end wall plate is provided at the front end of the shell, a first air inlet and a first air inlet valve for opening or closing the first air inlet are provided on the front end wall plate above the first partition, a first air outlet and a first air outlet valve for opening or closing the first air outlet are provided on the top of the first chamber unit, a second air inlet and a second air inlet valve for opening or closing the second air inlet are provided on the front end wall plate below the first partition, a second air outlet and a second air outlet valve for opening or closing the second air outlet are provided on the top of the fourth chamber unit; a first air outlet and a first air outlet valve for opening or closing the first air outlet are provided on the first partition;

[0009] The air handling unit includes a first sensor, a second sensor, a third sensor, a fourth sensor, a first filter, a second filter, a heat exchanger, a surface cooler, a first fan matrix composed of a plurality of fans, and a second fan matrix composed of a plurality of fans, wherein:

[0010] The first filter and the upper part of the heat exchanger are sequentially arranged in the first chamber unit from front to back, the first sensor is arranged on the front end wall plate at a position corresponding to the first air inlet, and the first fan matrix is ​​arranged on the second partition plate;

[0011] The second filter, the lower part of the heat exchanger, and the surface cooler are arranged in the third chamber unit from the outside to the inside in sequence, the second sensor is arranged on the front end wall plate at a position corresponding to the second air inlet, the second fan matrix is ​​arranged on the third partition plate, the first air outlet is located between the second filter and the heat exchanger, the second air outlet and the second air outlet valve for opening or closing the second air outlet are arranged at the connection between the lower part of the heat exchanger and the bottom of the three-chamber unit, the third air outlet and the third air outlet valve for opening or closing the third air outlet are arranged at the connection between the lower end of the surface cooler and the bottom of the fourth chamber unit, the third sensor is arranged between the second air outlet and the third air outlet, and the fourth sensor is arranged at a position corresponding to the second air outlet.

[0012] A further technical solution of the present invention is that the heat exchanger is a plate heat exchanger, a heat pipe heat exchanger, or a rotary heat exchanger.

[0013] A further technical solution of the present invention is that the surface cooler adopts water or refrigerant for cooling.

[0014] A further technical solution of the present invention is that the first filter is used to filter outdoor air, and the second filter is used to filter indoor air.

[0015] To achieve the above object, the present invention further proposes a data center air treatment method, which is applied to the data center air treatment device as described above, and comprises the following steps:

[0016] Upon receiving the air treatment instruction, obtaining the outdoor air quality, cleanliness and temperature detected by the first sensor, and the air temperature detected by the third sensor;

[0017] Compare the outdoor air quality, outdoor cleanliness, temperature and humidity detected by the first sensor, and the air temperature detected by the third sensor with preset conditions;

[0018] The data center air is processed using a corresponding cooling mode based on the comparison results, wherein the cooling mode includes an indirect heat exchange mode, a fresh air mode, a mechanical refrigeration mode, a combination of an indirect heat exchange mode and a mechanical refrigeration mode, or a combination of a fresh air mode and a mechanical refrigeration mode.

[0019] A further technical solution of the present invention is that the step of using a corresponding cooling mode to process the air in the data center according to the comparison result comprises:

[0020] Determining whether the outdoor air quality meets a preset condition;

[0021] If the outdoor air quality meets the preset conditions, then determine whether the outdoor air cleanliness meets the preset conditions;

[0022] If the cleanliness of the outdoor air meets the preset conditions, the data center air is treated in a mechanical cooling mode.

[0023] A further technical solution of the present invention is that after determining whether the outdoor air quality meets the preset conditions, the method further includes:

[0024] If the outdoor air quality does not meet the preset condition, determining whether the outdoor air temperature detected by the first sensor is greater than a first preset value;

[0025] If so, the data center air is treated in mechanical cooling mode.

[0026] A further technical solution of the present invention is that if the outdoor air quality does not meet the preset condition, the step of determining whether the outdoor air temperature detected by the first sensor is greater than a first preset value comprises:

[0027] If not, determining whether the outdoor air temperature detected by the first sensor is greater than a second preset value, wherein the second preset value is less than the first preset value;

[0028] If yes, determining whether the air temperature detected by the third sensor is greater than a fourth preset value;

[0029] If so, a combination of fresh air mode and mechanical cooling mode is used to treat the air in the data center.

[0030] A further technical solution of the present invention is that after the step of determining whether the outdoor air temperature detected by the first sensor is greater than a second preset value, the step further includes:

[0031] If not, and the air temperature detected by the third sensor is less than or equal to the fourth preset value, determining whether the outdoor air temperature detected by the first sensor is greater than the third preset value;

[0032] If so, use the fresh air mode to process the data center air;

[0033] If not, the data center air is treated using indirect heat exchange mode.

[0034] A further technical solution of the present invention is that, in the indirect heat exchange mode, the first air inlet is opened, outdoor air enters the upper part of the heat exchanger from the first air inlet through the first filter, and the air after heat exchange is discharged from the first air outlet under the action of the first fan matrix. At the same time, indoor air passes through the second filter from the second air inlet, and then passes through the lower part of the heat exchanger to exchange heat with outdoor air, and is discharged from the second air outlet through the surface cooler under the action of the second fan matrix.

[0035] In the fresh air mode, the first air inlet, the first air outlet, and the second air outlet are opened, and outdoor air passes through the second filter from the first air inlet, passes through the second air outlet from the first air outlet, and then passes through the third air outlet, and is discharged from the second air outlet under the action of the first fan matrix;

[0036] In the mechanical cooling mode, indoor air enters through the second air inlet, passes through the second filter, the second air outlet and the surface cooler, and is discharged through the second air outlet under the action of the second fan matrix.

[0037] The beneficial effects of the data center air handling device and method of the present invention are: through the above-mentioned technical scheme, the present invention can satisfy the indirect heat exchange mode, the fresh air mode, and the mechanical refrigeration mode. The combination and switching of multiple modes can be freely selected according to the parameters set by the user to maximize the utilization of natural cold sources. Compared with the existing technology, it is more energy-saving and environmentally friendly and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 It is a structural schematic diagram of a preferred embodiment of the data center air handling device of the present invention;

[0040] Figure 2 It is a flow chart of a preferred embodiment of the data center air treatment method of the present invention;

[0041] Figure 3 It is another flow chart of a preferred embodiment of the data center air treatment method of the present invention.

[0042] Description of Figure Numbers:

[0043] Label name Label name 1 First air inlet 10 Second air outlet 2 First filter 11 The first outlet 3 Heat Exchanger 12 Second outlet 4 First fan matrix 13 The third outlet 5 First air outlet 1401 First sensor 6 Second air inlet 1402 Second sensor 7 Second filter 1403 Third sensor 8 Surface Cooler 1404 Fourth sensor 9 Second fan matrix

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] Please refer to Figure 1 , Figure 1 It is a structural schematic diagram of a preferred embodiment of the data center air handling device of the present invention.

[0049] like Figure 1 As shown, in this embodiment, the data center air handling device includes a shell and an air handling unit installed in the shell, a horizontally arranged first partition is arranged in the shell, the first partition divides the shell into a first chamber located at the upper part and a second chamber located at the lower part, a second partition is arranged vertically downward at the rear end of the first chamber, the second partition divides the first chamber into a first chamber unit and a second chamber unit, a third partition is arranged at the rear end of the second chamber, the third partition divides the second chamber into a third chamber unit and a fourth chamber unit;

[0050] A front end wall panel is provided at the front end of the shell, and a first air inlet 1 and a first air inlet valve for opening or closing the first air inlet 1 are provided on the front end wall panel above the first partition plate, a first air outlet 5 and a first air outlet valve for opening or closing the first air outlet 5 are provided on the top of the first chamber unit, a second air inlet 6 and a second air inlet valve for opening or closing the second air inlet 6 are provided on the front end wall panel below the first partition plate, a second air outlet 10 and a second air outlet valve for opening or closing the second air outlet 10 are provided on the top of the fourth chamber unit; a first air outlet 11 and a first air outlet valve for opening or closing the first air outlet 11 are provided on the first partition plate.

[0051] The air handling unit includes a first sensor 1401, a second sensor 1402, a third sensor 1403, a fourth sensor 1404, a first filter 2, a second filter 7, a heat exchanger 3, a surface cooler 8, a first fan matrix 4 composed of a plurality of fans, and a second fan matrix 9 composed of a plurality of fans.

[0052] Among them, the upper parts of the first filter 2 and the heat exchanger 3 are arranged in the first chamber unit from front to back, the first sensor 1401 is arranged on the front end wall panel at the corresponding position of the first air inlet 1, and the first fan matrix 4 is arranged on the second partition.

[0053] The second filter 7, the lower part of the heat exchanger 3, and the surface cooler 8 are arranged in the third chamber unit from the outside to the inside in sequence, the second sensor 1402 is arranged on the front end wall panel at the corresponding position of the second air inlet 6, the second fan matrix 9 is arranged on the third partition plate, the first air outlet 11 is located between the second filter 7 and the lower part of the heat exchanger 3, the second air outlet 12 and the second air outlet valve for opening or closing the second air outlet 12 are arranged at the connection between the lower part of the heat exchanger 3 and the bottom of the three-chamber unit, the third air outlet 13 and the third air outlet valve for opening or closing the third air outlet 13 are arranged at the connection between the lower end of the surface cooler 8 and the bottom of the fourth chamber unit, the third sensor 1403 is arranged between the second air outlet 12 and the third air outlet 13, and the fourth sensor 1404 is arranged at the corresponding position of the second air outlet 10.

[0054] In this embodiment, the second air outlet 12 and the second heat exchanger 15 are connected in parallel, and the third air outlet 13 and the surface cooler 8 are connected in parallel, which can reduce wind resistance for air that meets the requirements and achieve energy saving effect.

[0055] In this embodiment, the heat exchanger 3 is a plate heat exchanger, a heat pipe heat exchanger, or a rotary heat exchanger. The surface cooler 8 uses water or refrigerant for cooling.

[0056] The first filter 2 is used to filter outdoor air, and the second filter 7 is used to filter indoor air.

[0057] In this embodiment, the first air inlet 1, the second air inlet 6, the first air outlet 11, the second air outlet 12, and the third air outlet 13 are all analog quantities, and the first air outlet 5 and the second air outlet 10 are both switch quantities. The first fan matrix 4 and the second fan matrix 9 can both be stepless variable speed fans, such as EC fans, AC fans, or DC fans.

[0058] In this embodiment, the first sensor 1401 is installed at the first air inlet 1 to detect the temperature and humidity there, the second sensor 1402 is installed at the second air inlet 6 to detect the temperature and humidity there, the third sensor 1403 is installed between the second heat exchanger 15 and the surface cooler 8 to detect the temperature and humidity of the air flow coming out of the second heat exchanger 15 or the second air outlet 12, and the fourth sensor 1404 is installed at the second air outlet 10 to detect the temperature and humidity of the supply air.

[0059] It should be emphasized that in the indirect heat exchange mode, the first air inlet 1 is opened, and the outdoor air enters the upper part of the heat exchanger 3 from the first air inlet 1 through the first filter 2. The air after heat exchange is discharged from the first air outlet 5 under the action of the first fan matrix 4. At the same time, the indoor air passes through the second filter from the second air inlet 6, and then passes through the lower part of the heat exchanger 3 to exchange heat with the outdoor air, and passes through the surface cooler 8 and is discharged from the second air outlet 10 under the action of the second fan matrix 9; in the fresh air mode, the first air inlet 1, the first air outlet 11, and the second air outlet 12 are opened, and the outdoor air passes through the second filter 7 from the first air inlet 1, passes through the second air outlet 12 from the first air outlet 11, and then passes through the surface cooler 8, and is discharged from the second air outlet 10 under the action of the first fan matrix 4; in the mechanical refrigeration mode, the indoor air enters through the second air inlet 6, passes through the second filter 7, the second air outlet 12 and the surface cooler, and is discharged through the second air outlet 10 under the action of the second fan matrix 9.

[0060] The beneficial effect of the data center air handling device of the present invention is that the present invention can meet the indirect heat exchange mode, the fresh air mode, and the mechanical refrigeration mode through the above-mentioned technical scheme. The combination and switching of multiple modes can be freely selected according to the parameters set by the user to maximize the utilization of natural cold sources. Compared with the existing technology, it is more energy-saving and environmentally friendly and has a wider range of applications.

[0061] To achieve the above object, the present invention also proposes a data center air treatment method, which is applied to the data center air treatment device as described in the above embodiment. Figure 1 and Figure 2 , the method comprises the following steps:

[0062] Step S10, when receiving the air treatment instruction, obtaining the outdoor air quality, cleanliness and temperature detected by the first sensor, and the air temperature detected by the third sensor.

[0063] When receiving the air treatment instruction, this embodiment first obtains the current outdoor air quality, cleanliness and temperature detected by the first sensor, and the current air temperature detected by the third sensor.

[0064] Step S20, comparing the outdoor air quality, outdoor cleanliness, temperature and humidity detected by the first sensor, and the air temperature detected by the third sensor with preset conditions.

[0065] The preset conditions may be specifically set according to actual needs.

[0066] Step S30, according to the comparison result, a corresponding cooling mode is adopted to process the air of the data center, wherein the cooling mode includes an indirect heat exchange mode, a fresh air mode, a mechanical cooling mode, a combination of the indirect heat exchange mode and the mechanical cooling mode, or a combination of the fresh air mode and the mechanical cooling mode.

[0067] Among them, in the indirect heat exchange mode, the first air inlet is opened, and the outdoor air enters the heat exchanger 3 from the first air inlet through the first filter, and the air after heat exchange is discharged from the first air outlet under the action of the first fan matrix, thereby completing an external cycle. At the same time, the indoor air passes through the second filter from the second air inlet, and then passes through the lower part of the heat exchanger to exchange heat with the outdoor air, and passes through the surface cooler and is discharged from the second air outlet under the action of the second fan matrix, thereby completing an internal cycle.

[0068] In the fresh air mode, the first air inlet, the first air outlet, and the second air outlet are opened, and the outdoor air passes through the second filter from the first air inlet, passes through the second air outlet from the first air outlet, and then passes through the third air outlet 13, and is discharged from the second air outlet under the action of the first fan matrix, thereby completing the fresh air circulation mode.

[0069] In the mechanical cooling mode, indoor air enters through the second air inlet, passes through the second filter, the second air outlet and the surface cooler, and is discharged through the second air outlet under the action of the second fan matrix.

[0070] In this embodiment, the step of using a corresponding cooling mode to process the air in the data center according to the comparison result includes:

[0071] Determine whether the outdoor air quality meets a preset condition.

[0072] If the outdoor air quality meets the preset conditions, it is determined whether the outdoor air cleanliness meets the preset conditions.

[0073] If the cleanliness of the outdoor air meets the preset conditions, the data center air is treated in a mechanical cooling mode.

[0074] Furthermore, after determining whether the outdoor air quality meets the preset condition, the step further includes:

[0075] If the outdoor air quality does not meet the preset condition, it is determined whether the outdoor air temperature detected by the first sensor is greater than a first preset value.

[0076] The first preset value can be set according to actual needs, for example, 37°C.

[0077] If so, the data center air is treated in mechanical cooling mode.

[0078] Furthermore, in this embodiment, if the outdoor air quality does not meet the preset condition, the step of determining whether the outdoor air temperature detected by the first sensor is greater than a first preset value includes:

[0079] If not, it is determined whether the outdoor air temperature detected by the first sensor is greater than a second preset value, wherein the second preset value is less than the first preset value.

[0080] The second preset value can be set according to actual needs, for example, 27°C.

[0081] If the outdoor air temperature detected by the first sensor is greater than a second preset value, it is determined whether the air temperature detected by the third sensor is greater than a fourth preset value.

[0082] The fourth preset value can be set according to actual needs, for example, 27°C.

[0083] If the air temperature detected by the third sensor is greater than a fourth preset value, the data center air is processed by combining a fresh air mode and a mechanical cooling mode.

[0084] It is understandable that in this embodiment, when the air quality does not meet the requirements, the fresh air mode cannot be used directly, and it is only possible to determine whether the indirect heat exchange mode or the combination of indirect heat exchange and mechanical refrigeration mode is met to process the data center based on the conditions.

[0085] Furthermore, after the step of determining whether the outdoor air temperature detected by the first sensor is greater than a second preset value, the step further includes:

[0086] If not, and the air temperature detected by the third sensor is less than or equal to the fourth preset value, it is determined whether the outdoor air temperature detected by the first sensor is greater than the third preset value.

[0087] The fourth preset value can be set according to actual needs, for example, 13°C.

[0088] If the outdoor air temperature detected by the first sensor is greater than a third preset value, the data center air is processed in a fresh air mode;

[0089] If the outdoor air temperature detected by the first sensor is less than or equal to a third preset value, the data center air is processed in an indirect heat exchange mode.

[0090] It should be noted that, in this embodiment, after the step of treating the air of the data center by combining the fresh air mode and the mechanical refrigeration mode, and the step of treating the air of the data center by adopting the indirect heat exchange mode, a fourth sensor can be used to detect the air temperature. If the air temperature is within a preset range, for example, 18 to 27°C, the fresh air mode and the mechanical refrigeration mode are continuously combined, or the indirect heat exchange mode is used to treat the air of the data center. If it is not within the range, return to the above step S10.

[0091] The beneficial effect of the data center air treatment method of the present invention is that the present invention can meet the indirect heat exchange mode, the fresh air mode, and the mechanical refrigeration mode through the above-mentioned technical scheme. The combination and switching of multiple modes can be freely selected according to the parameters set by the user to maximize the utilization of natural cold sources. Compared with the existing technology, it is more energy-saving and environmentally friendly and has a wider range of applications.

[0092] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A data center air handling device, characterized in that: The air handling unit comprises a shell and an air handling unit installed in the shell, wherein a horizontally arranged first partition is arranged in the shell, the first partition divides the shell into a first chamber located at the upper part and a second chamber located at the lower part, a second partition is arranged vertically downward at the rear end of the first chamber, the second partition divides the first chamber into a first chamber unit and a second chamber unit, a third partition is arranged at the rear end of the second chamber, the third partition divides the second chamber into a third chamber unit and a fourth chamber unit; A front end wall plate is provided at the front end of the shell, a first air inlet and a first air inlet valve for opening or closing the first air inlet are provided on the front end wall plate above the first partition, a first air outlet and a first air outlet valve for opening or closing the first air outlet are provided on the top of the first chamber unit, a second air inlet and a second air inlet valve for opening or closing the second air inlet are provided on the front end wall plate below the first partition, a second air outlet and a second air outlet valve for opening or closing the second air outlet are provided on the top of the fourth chamber unit; a first air outlet and a first air outlet valve for opening or closing the first air outlet are provided on the first partition; The air handling unit includes a first sensor, a second sensor, a third sensor, a fourth sensor, a first filter, a second filter, a heat exchanger, a surface cooler, a first fan matrix composed of a plurality of fans, and a second fan matrix composed of a plurality of fans, wherein: The first filter and the upper part of the heat exchanger are sequentially arranged in the first chamber unit from front to back, the first sensor is arranged on the front end wall plate at a position corresponding to the first air inlet, and the first fan matrix is ​​arranged on the second partition plate; The second filter, the lower part of the heat exchanger, and the surface cooler are arranged in the third chamber unit from the outside to the inside in sequence, the second sensor is arranged on the front end wall plate at a position corresponding to the second air inlet, the second fan matrix is ​​arranged on the third partition plate, the first air outlet is located between the second filter and the heat exchanger, the second air outlet and the second air outlet valve for opening or closing the second air outlet are arranged at the connection between the lower part of the heat exchanger and the bottom of the three-chamber unit, the third air outlet and the third air outlet valve for opening or closing the third air outlet are arranged at the connection between the lower end of the surface cooler and the bottom of the fourth chamber unit, the third sensor is arranged between the second air outlet and the third air outlet, and the fourth sensor is arranged at a position corresponding to the second air outlet.

2. The data center air handling device according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger, a heat pipe heat exchanger, or a rotary heat exchanger.

3. The data center air handling device according to claim 1, characterized in that: The surface cooler adopts water or refrigerant for cooling.

4. The data center air handling device according to claim 1, characterized in that: The first filter is used to filter outdoor air, and the second filter is used to filter indoor air.

5. A data center air treatment method, characterized in that: The method is applied to the data center air handling device according to any one of claims 1 to 4, and the method comprises the following steps: Upon receiving the air treatment instruction, obtaining the outdoor air quality, cleanliness and temperature detected by the first sensor, and the air temperature detected by the third sensor; Compare the outdoor air quality, outdoor cleanliness, temperature and humidity detected by the first sensor, and the air temperature detected by the third sensor with preset conditions; The data center air is processed using a corresponding cooling mode based on the comparison results, wherein the cooling mode includes an indirect heat exchange mode, a fresh air mode, a mechanical refrigeration mode, a combination of an indirect heat exchange mode and a mechanical refrigeration mode, or a combination of a fresh air mode and a mechanical refrigeration mode.

6. The method according to claim 5, characterized in that The step of using a corresponding cooling mode to process the air in the data center according to the comparison result includes: Determining whether the outdoor air quality meets a preset condition; If the outdoor air quality meets the preset conditions, then determine whether the outdoor air cleanliness meets the preset conditions; If the cleanliness of the outdoor air meets the preset conditions, the data center air is treated in a mechanical cooling mode.

7. The method according to claim 6, characterized in that After determining whether the outdoor air quality meets the preset condition, the method further includes: If the outdoor air quality does not meet the preset condition, determining whether the outdoor air temperature detected by the first sensor is greater than a first preset value; If so, the data center air is treated in mechanical cooling mode.

8. The method according to claim 7, characterized in that If the outdoor air quality does not meet the preset condition, the step of determining whether the outdoor air temperature detected by the first sensor is greater than a first preset value includes: If not, determining whether the outdoor air temperature detected by the first sensor is greater than a second preset value, wherein the second preset value is less than the first preset value; If yes, determining whether the air temperature detected by the third sensor is greater than a fourth preset value; If so, a combination of fresh air mode and mechanical cooling mode is used to treat the air in the data center.

9. The method according to claim 8, characterized in that After the step of determining whether the outdoor air temperature detected by the first sensor is greater than a second preset value, the method further includes: If not, and the air temperature detected by the third sensor is less than or equal to the fourth preset value, determining whether the outdoor air temperature detected by the first sensor is greater than the third preset value; If so, use the fresh air mode to process the data center air; If not, the data center air is treated using indirect heat exchange mode.

10. The method according to any one of claims 5 to 9, characterized in that: In the indirect heat exchange mode, the first air inlet is opened, and outdoor air enters the upper part of the heat exchanger from the first air inlet through the first filter, and the air after heat exchange is discharged from the first air outlet under the action of the first fan matrix. At the same time, indoor air passes through the second filter from the second air inlet, and then passes through the lower part of the heat exchanger to exchange heat with outdoor air, and then passes through the surface cooler and is discharged from the second air outlet under the action of the second fan matrix. In the fresh air mode, the first air inlet, the first air outlet, and the second air outlet are opened, and outdoor air passes through the second filter from the first air inlet, passes through the second air outlet from the first air outlet, and then passes through the third air outlet, and is discharged from the second air outlet under the action of the first fan matrix; In the mechanical cooling mode, indoor air enters through the second air inlet, passes through the second filter, the second air outlet and the surface cooler, and is discharged through the second air outlet under the action of the second fan matrix.

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