JP7255855B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner that cools heat generated by IT (Information Technology) equipment such as servers in a data center by outdoor air conditioning.

The evolution of IT, such as the cloud, IoT (Internet of Things), big data, and AI (Artificial Intelligence), is making people's lives richer and more efficient by transforming waste that people have not noticed. Most of today's IT runs in data centers.

However, in exchange for affluence and high efficiency, the power consumption of data centers continues to increase, exceeding 2% of the world's total power energy (the second largest national-level power consumption after Japan's total power consumption), and 10% annually. It has increased. In other words, lowering power energy in data centers is as important a theme as reducing _CO2 . Electric power generates a certain amount of heat, and there are two main types of cooling methods for data centers: mechanical air conditioning and outdoor air conditioning.

Mechanical air conditioning uses a heat exchanger to absorb the heat generated by warm air, and then cools the absorbed heat with a compressor and a compressed refrigerant that is an alternative to Freon (the same air-cooled air conditioning as a home air conditioner), and a refrigerator called a chiller. , There is a method of making cold water and cooling with the cold water (water-cooled air conditioning).

The energy efficiency of a data center is represented by an index called "PUE (Power Usage Effectiveness)". For PUE, 1.0 is the ideal value, and 2.0 means cooling with the same power consumption as the IT equipment power consumed. Mechanical air conditioning is the best at PUE=1.5, but there are many data centers where the actual value is 2.0 to 2.5. Looking at the numbers, it doesn't feel real, but if a large data center of 10 MW (10,000 kw) is 20 yen/kw, PUE=2.5 against the electricity bill of 1.75 billion yen/year at PUE=1.0. The electricity bill for mechanical air conditioning is 4.37 billion yen/. Therefore, outdoor air conditioning was required mainly for large data centers.

Outdoor air conditioning is the best option for minimizing air conditioner power. There are two types of outdoor air conditioning: a direct outdoor air conditioning system and an indirect outdoor air conditioning system. In the direct outdoor air conditioning system, cold heat from the outside air is taken directly into the room for cooling. Instead of actually cooling the indoor air, it is a system that constantly exchanges the indoor air with the outside air, making it appear to be cooled. Direct outdoor air conditioning has the disadvantage that dust, gas, moisture, salt, etc. contained in the outdoor air all enter the room. Although these can be removed to some extent with a filter, it is difficult to completely remove them. In particular, it is difficult to remove the moisture, and the cold outside air in winter cannot be taken in directly, so a complicated control facility is required to mix the heated air with the outside air. In Japan, there is a large difference in temperature and humidity throughout the day, and western Japan is susceptible to yellow dust and PM2.5.

Therefore, the indirect outdoor air conditioning system solves the problem of direct outdoor air conditioning. This indirect outdoor air conditioning uses a heat exchanger to absorb the heat generated by the warm air (up to this point is the same as mechanical air conditioning), cools the absorbed heat with the outside air, and then releases cold air from the cooled heat exchanger. I have to. In indirect outdoor air conditioning, the same air is always used in the room, and the outdoor air is used only for cooling, so it is not affected by the outdoor air at all.

JP 2012-117737 A

However, the above-mentioned indirect outdoor air conditioning cannot lower the temperature below the outside air temperature, and when the outside air exceeds 25°C, another cold heat source such as a chiller is required. Indirect outdoor air conditioning is the mainstream.

In the indirect outdoor air conditioning system that uses this heat of vaporization, the heat of vaporization is used to increase the heat exchange efficiency by injecting water into the heat exchanger in a spray state. However, there is a problem that the efficiency is extremely lowered and sufficient performance cannot be exhibited, and furthermore, it is necessary to secure water resources for spraying.

Indirect outdoor air conditioning performs excellently when the outside air temperature is below about 18°C and is comparable to mechanical air conditioners. In Honshu, about 70% of the total annual hours (8760 hours in a year) are below 18°C. Furthermore, most of the latest IT devices are enhanced in temperature resistance to 36°C endurance instead of conventional 28°C endurance. If IT equipment with a temperature of 35°C is used, it can be operated with indirect outdoor air conditioning up to an outside temperature of about 25°C. It is about 25% of the year that the outside air temperature is 25°C or higher. Only for this 15%, or about 1,300 hours, an evaporative heat cooling device or a chiller is required even with indirect outdoor air conditioning. In other words, a data center must be invested and installed even though it will not be used for 85% of the year, and must be operated even if the PUE during that period is bad.

Therefore, the present invention has been made in view of the above problems. During normal operation when the outside temperature is below a certain temperature, indirect outside air conditioning is operated, and when the outside temperature exceeds a certain temperature, direct outside air conditioning is automatically switched. An object of the present invention is to provide an air-conditioning device capable of rapidly switching air-conditioning power and significantly reducing air-conditioning power.

In order to achieve this object, the invention described in claim 1 is capable of switching between a direct outside air operation in which outside air is directly introduced into an air-conditioned room and an indirect outside air operation in which the outside air is indirectly introduced into the air-conditioned room. An air conditioner, which is formed in the shape of a box and provided with a partition portion for separating a first chamber facing the side of taking in the outside air and a second chamber facing the side of the room to be air-conditioned; detecting means for detecting at least the temperature, humidity, dust, and gas amount of the outside air taken into the air-conditioned room through the main body; and the temperature, humidity, dust, and an opening/closing member that opens when the amount of gas does not exceed a preset threshold value and closes when the threshold value is exceeded; a heat exchanger installed so as to be capable of cooling by exchanging heat between the temperature of the outside air and the temperature of the inside air of the air-conditioned room to be cooled; is closed and the inside air cooled through the heat exchanger is introduced into the air-conditioned room by the indirect outside air air conditioning operation, and when the outside air temperature exceeds a certain temperature, the detecting means When the temperature, humidity, dust, and gas amount of the outside air detected by the above do not exceed a preset threshold value, the open/close member is opened to introduce the outside air into the air-conditioned room, and the direct outside air air-conditioning is performed in the air-conditioned room. and control means for performing switching control so as to cool by operation.

Further, according to the invention of claim 2, in addition to the configuration of claim 1, a first opening is formed in the first chamber, and an outside air introduction fan for introducing the outside air is installed in the first opening. and the number of rotations of the outside air introduction fan is controlled by a control means.

Further, according to the invention of claim 3, in addition to the configuration of claim 1 or 2, a second opening is formed in the second chamber, and the internal air in the air-conditioned room is introduced into the second opening. A fan for introducing inside air into the second chamber is installed, and the number of revolutions of the fan for introducing inside air is controlled by a control means.

Further, the invention according to claim 4 is characterized in that, in addition to the configuration according to any one of claims 1 to 3, an auxiliary water cooling member having dehumidification and humidification functions is further provided in the second chamber. Characterized by

According to the first aspect of the invention, cooling is performed by indirect outdoor air conditioning operation in which the open/close member is closed during normal operation when the outside air temperature is below a certain temperature and the inside air cooled through the heat exchanger is introduced into the air-conditioned room. In addition, when the outside air temperature exceeds a certain temperature and the outside air temperature, humidity, and dust amount detected by the detection means do not exceed preset threshold values, the opening and closing member is opened to air the outside air. Since it is introduced into the room and the switching control is performed so that the room to be air-conditioned is directly cooled by the outdoor air-conditioning operation, it is possible to greatly reduce the air-conditioning power.

Further, according to the second aspect of the invention, an outside air introduction fan is installed to introduce outside air into the first opening of the first chamber, and the rotational speed of this outside air introduction fan is controlled by the control means, In order to achieve the required cooling capacity, the number of revolutions of the fan is controlled by a program or AI, and the wasted electric power of the fan is also eliminated, so outside air can be efficiently introduced into the first room.

Further, according to the third aspect of the invention, an inside air introduction fan for introducing inside air from the room to be air-conditioned into the second room is installed at the second opening of the second room, and the rotational speed of this inside air introduction fan is controlled. In order to achieve the required cooling capacity, the number of revolutions of the fan is controlled by a program or AI, and wasteful electric power of the fan is also eliminated, so the inside air in the room to be air-conditioned is supplied to the second room. It can be introduced efficiently.

In addition, according to the fourth aspect of the invention, since the second chamber is further provided with an auxiliary water cooling plate having dehumidification and humidification functions, by using an external heat source together, the temperature of the air sent to the air-conditioned room can be reduced. can be further cooled and the humidity can be kept constant.

FIG. 2 is a schematic configuration diagram showing a state during indirect outdoor air conditioning operation in the air conditioner according to the embodiment of the present invention; FIG. 2 is a schematic configuration diagram showing a state of the air conditioner of FIG. 1 during direct outdoor air conditioning operation; 2 is a block diagram showing the configuration of a control system of the air conditioner of FIG. 1; FIG. 4 is a flow chart showing an example of the operation of the control device of FIG. 3;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1-4 illustrate embodiments of the present invention. FIG. 1 is a schematic configuration diagram showing a state of an air conditioner according to an embodiment of the present invention during indirect outdoor air conditioning operation. FIG. 2 is a schematic configuration diagram showing the state of the air conditioner of FIG. 1 during direct outdoor air conditioning operation.

As shown in FIGS. 1 and 2, the main body 10 of the air conditioner according to the present embodiment is formed in a rectangular parallelepiped box shape as a whole. Note that the rectangular parallelepiped is a shape described for the sake of convenience, and the shape does not mean anything, and a sphere or a polyhedron is also possible.

The air conditioner main body 10 has a first room 11 facing the outside air intake side and a second room 12 facing the server room 13 side of the data center as a room to be air-conditioned. The first chamber 11 and the second chamber 12 are diagonally partitioned by a partition portion 14 .

A communication port 14a is formed in the partition portion 14, and a shutter 15 as an opening/closing member is installed in the communication port 14a so as to be openable and closable between the first chamber 11 and the second chamber 12 as shown in FIG. It is Specifically, the shutter 15 is configured to be wound up and unreeled. By driving a shutter opening/closing motor, which will be described later, the shutter 15 is wound up from one end toward the other end to be opened, and is unwound from the other end toward one end. closed. By opening the shutter 15, the first chamber 11 and the second chamber 12 are communicated with each other through the communication port 14a. 1, illustration of the shutter 15 is omitted.

The shutter 15 is opened to communicate through the communication port 14a during the direct outdoor air conditioning operation, and closed by closing the communication port 14a during the indirect external air conditioning operation. Here, the direct outside air air-conditioning operation in this embodiment is an operation in which outside air is directly introduced into the server room 13 as the room to be air-conditioned. The indirect outside air air conditioning operation is an operation in which outside air is taken in and heat is exchanged with a heat pipe, which will be described later, to indirectly take outside air cold energy into the server room 13 .

A heat pipe 16 as a heat exchanger is installed inside the air conditioner main body 10 so as to intersect the partition portion 14 . With this heat pipe 16 as a boundary, the first chamber 11 is divided into a third chamber 17 and a fourth chamber 18 . Similarly, the second chamber 12 is also divided into a fifth chamber 21 and a sixth chamber 22 with the heat pipe 16 as a boundary. An auxiliary water cooling plate 19 is installed in the fifth chamber 21 of the second chamber 12 . The auxiliary water-cooling plate 19 further cools the outside air flowing through the fifth chamber 21 and the inside air that has been heat-exchanged by the heat pipe 16, and has humidification and dehumidification functions for adjusting the humidity. there is

The third chamber 17 and the fourth chamber 18, and the fifth chamber 21 and the sixth chamber 22 are in communication with each other so that air can flow. Openings 17a, 18a, 21a, and 22a are formed in the third chamber 17, the fourth chamber 18, the fifth chamber 21, and the sixth chamber 22, respectively. The opening 17a of the third chamber 17 constitutes the first opening of this embodiment, and the opening 22a of the sixth chamber 22 constitutes the second opening of this embodiment.

An outside air introduction fan 23 for introducing outside air is installed in the opening 17 a of the third chamber 17 . The outside air introduction fan 23 is rotationally driven by driving the outside air introduction fan driving motor 32 . An inside air introduction fan 24 for introducing the inside air inside the server room 13 into the sixth room 22 of the second room 12 is installed at the opening 22 a of the sixth room 22 . The inside air introduction fan 24 is rotationally driven by driving the inside air introduction fan driving motor 34 . The server room 13 is provided with a first opening 13a and a second opening 13b.

The opening 21a of the fifth room 21 and the first opening 13a of the server room 13 are connected via the first communication path 25 and communicate with each other. Similarly, the opening 22a of the sixth room 22 and the second opening 13b of the server room 13 are connected via the second communication path 26 and communicate with each other.

During direct outdoor air conditioning operation, the communication port 14a of the partition 14 is open as shown in FIG. Outside air is introduced directly into the server room 13 through the port 14 a , the opening 21 a of the fifth room 21 , the first communication path 25 , and the first opening 13 a of the server room 13 .

In addition, the inside air introduction fan 24 takes in the warm inside air from the second opening 13b of the server room 13 through the opening 22a of the sixth room 22 during the direct outside air conditioning operation. The air is discharged to the outside of the air conditioner body 10 through the opening 18 a of the chamber 18 .

During indirect outdoor air conditioning operation, the communication port 14a of the partition 14 is closed as shown in FIG. The exchanged and warmed outside air is discharged from the opening 18 a of the fourth chamber 18 to the outside of the air conditioner body 10 .

The inside air introduction fan 24 takes in the warm inside air from the second opening 13b of the server room 13 through the opening 22a of the sixth room 22 during the indirect outside air conditioning operation, and exchanges heat with the heat pipe 16 to cool the inside air. The inside air is returned into the server room 13 from the first opening 13 a of the server room 13 through the opening 21 a of the fifth room 21 and the first communication passage 25 . That is, during the indirect outdoor air conditioning operation, the inside air introduction fan 24 circulates inside air between the server room 13 and the second room 12 of the air conditioner body 10 .

Next, the configuration of the control system of this embodiment will be described.

FIG. 3 is a block diagram showing the configuration of the control system of the air conditioner of FIG.

As shown in FIG. 3, the air conditioner of this embodiment includes a sensor group 30 as detection means, a control device 31 as switching control means, an outside air introduction fan driving motor 32, a motor driving device 33, and an inside air introduction fan driving motor. A motor 34 , a motor driving device 35 , a shutter opening/closing motor 36 and a shutter driving device 37 are provided.

The sensor group 30 is installed near the outside air introduction fan 23 as shown in FIGS. The sensor group 30 includes an outside air temperature sensor 30a, an outside air humidity sensor 30b, an outside air dust sensor 30c, and an outside air quality (gas) sensor 30d, as shown in FIG.

Further, the sensor group 30 includes a plurality of inside air 1 temperature sensors 38a, . . . , inside air 1 temperature sensors 38n, a plurality of inside air 1 humidity sensors 39a, . A server room temperature sensor 40a and a server room humidity sensor 40b are installed inside.

The control device 31 includes a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory) as storage means, flash memory (Flash Memory), SSD (Solid State Disk), I/O (Input / Output), etc., is a control device mainly composed of a well-known microcomputer.

Among them, the ROM, flash memory, and SSD store data and programs that need to be retained even when the power is turned off. The RAM temporarily stores data. The CPU implements each function by executing a program installed in the flash memory or SSD.

In addition, by connecting the network, the cooling device main body 10 and the other air conditioning device main bodies 10N in the group can perform cooperative processing between the cooling device main bodies, emphasize operation with the facility host system 42, or connect with the cloud system 43. It becomes possible to perform more sophisticated processing (for example, AI processing) and to perform all control of this device on the cloud system 43 side.

The control device 31 receives temperature, humidity, dust, and air quality data detected by an outside air temperature sensor 30a, an outside air humidity sensor 30b, an outside air dust sensor 30c, and an outside air quality (gas) sensor 30d of the sensor group 30. Preset threshold data for temperature data, humidity data, dust data and air quality data and data accumulated during operation are stored in a memory device for input and comparison with these data. The above data may be stored in the SSD database or cloud. The threshold data is set to a value such that the outside air does not adversely affect the equipment in the server room 13, and the operating status is always stored to provide the optimum threshold.

The outside air introduction fan drive motor 32 is driven by a motor drive device 33 , and the inside air introduction fan drive motor 34 is driven by a motor drive device 35 . The shutter 15 is driven to open and close by a shutter opening/closing motor 36 , and this shutter opening/closing motor 36 is driven by a shutter driving device 37 .

Next, the operation of the control system of this embodiment will be described.

4 is a flow chart showing an example of the operation of the control device of FIG. 3. FIG.

As shown in FIG. 4, the outside air temperature sensor 30a, the outside air humidity sensor 30b, the outside air dust sensor 30c, and the outside air quality sensor 30d detect the outside air temperature, the outside air humidity, the outside air dust amount, and the air quality, respectively (step S1). These temperature data, humidity data, dust data, and air quality data are each output to the control device 31 .

The controller 31 inputs these temperature data, humidity data, dust data and air quality data. The control device 31 determines whether or not the outside air temperature is equal to or lower than a preset constant temperature, and if it is equal to or lower than the constant temperature (step S2: YES), the process proceeds to step S3. If the temperature exceeds the constant temperature (step S2: NO), the process proceeds to step S5.

In steps S3 and S4, the shutter 15 is closed, the indirect air conditioning program operation is executed, and the indirect outdoor air conditioning operation is performed. In this indirect outdoor air conditioning operation, cooled inside air is introduced into the server room 13 via the heat pipe 16 to cool the inside of the room.

If the temperature exceeds the predetermined temperature in step S2, the process advances to step S5 to determine whether or not the humidity of the outside air, the amount of dust, and the air quality are equal to or less than preset threshold values. If the temperature, humidity, dust amount, and air quality of the outside air are equal to or lower than the preset threshold values in step S5 (step S5: YES), the shutter 15 is opened in step S6 to directly execute the air conditioning program operation, A direct outdoor air conditioning operation is performed (step S7). In this direct outdoor air conditioning operation, outside air is introduced directly into the server room 13 to cool the inside of the server room 13 .

If the temperature, humidity, dust amount, and air quality of the outside air exceed the preset threshold values in step S5 (step S5: NO), the process proceeds to step S8. In step S8, it is determined whether direct air-conditioning operation is possible for a short period of time. If the direct air-conditioning operation is possible (step S8: YES), the process proceeds to step S6, and the same processing as described above is executed.

If it is determined in step S8 that the air conditioning operation cannot be performed directly for a short period of time (step S8: NO), the process proceeds to step S9. In step S9, after the auxiliary cold program operation for cooling and humidity adjustment by the auxiliary water cooling plate 19 is executed, the process proceeds to step S6, and the same processing as above is executed.

After the indirect air-conditioning program operation in step S4 or the direct air-conditioning program operation in step S7 is completed, if the operation is not to be stopped (step S10: NO), the process returns to step S1, and the same processing as above is executed again. do. Also, if the operation is to be stopped (step S10: YES), the entire process is terminated.

As described above, according to this embodiment, during normal operation when the outside air temperature is below a certain temperature, the shutter 15 is closed and the inside air cooled through the heat pipe 16 is introduced into the server room 13 by the indirect outside air air conditioning operation. When the outside air temperature exceeds a certain temperature, the temperature and humidity of the outside air detected by the outside air temperature sensor 30a, the outside air humidity sensor 30b, the outside air dust sensor 30c, and the outside air quality sensor 30d of the sensor group 30, When the amount of dust and the air quality do not exceed preset threshold values, the shutter 15 is opened to introduce the outside air into the server room 13, and the inside of the server room 13 is directly cooled by the outside air conditioning operation. Therefore, it is possible to significantly reduce air conditioning power.

Further, according to this embodiment, the outside air introduction fan 23 for introducing outside air is installed in the first opening 17a of the third chamber 17 of the first chamber 11, and the number of revolutions of this outside air introduction fan 23 is controlled by the control device 31. By being controlled, the fan speed is controlled by a program or AI in order to achieve the necessary cooling capacity, and wasteful power of the fan is also eliminated, so outside air can be efficiently introduced into the first room. can.

Further, according to this embodiment, the inside air introduction fan 24 for introducing the inside air in the server room 13 into the second room 12 is installed at the opening 22a of the sixth room 22 of the second room 12, and the inside air introduction fan 24 By controlling the rotation speed of the fan by the control means, the fan rotation speed is controlled by a program or AI in order to achieve the necessary cooling capacity, and wasteful power of the fan is also eliminated. The internal air in the target room can be efficiently introduced. Therefore, the internal air in the server room 13 can be efficiently introduced into the second room 12 .

Further, according to this embodiment, since the second chamber 12 is further provided with the auxiliary water-cooling plate 19 having dehumidification and humidification functions, by using an external heat source in combination, the temperature of the air sent into the air-conditioned room can be further increased. Cooling is possible and humidity can be kept constant.

While embodiments of the invention have been described, the embodiments have been presented by way of example and are not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

For example, in the above-described embodiment, the outside air temperature sensor 30a, the outside air humidity sensor 30b, the outside air dust sensor 30c, and the outside air quality sensor 30d are provided as the sensor group 30 to detect the temperature, humidity, dust, and gas amount of the outside air. However, without being limited to this, for example, the salt concentration or the like may be detected and compared with a preset threshold value.

Further, in the above-described embodiment, an example of using the heat pipe 16 as a heat exchanger has been described, but the heat exchanger is not limited to this and may be any other device as long as it can exchange heat.

Furthermore, in the above-described embodiment, an example in which the server room 13 of the data center is used as the room to be air-conditioned has been described.

10 Air conditioner main body 10N Other air conditioner main body in the group 11 First room 12 Second room 13 Server room 13a First opening 13b Second opening 14 Partition 14a Communication port 15 Shutter (opening/closing member)
16 heat pipe (heat exchanger)
17 third chamber 17a opening (first opening)
18 fourth chamber 18a opening 19 auxiliary water cooling plate 21 fifth chamber 21a opening 22 sixth chamber 22a opening (second opening)
23 outside air introduction fan 24 inside air introduction fan 25 first communication passage 26 second communication passage 30 sensor group 30a outside air temperature sensor (detection means)
30b outside air humidity sensor (detection means)
30c outside air dust sensor (detection means)
30d outside air quality sensor (detection means)
31 control device (control means)
32 outside air introduction fan drive motor 33 motor drive device 34 inside air introduction fan drive motor 35 motor drive device 36 shutter opening/closing motor 37 shutter drive device 38a inside air 1 temperature sensor (detecting means)
38n Inside air N temperature sensor (detection means)
39a inside air 1 humidity sensor (detection means)
39n Inside air N humidity sensor (detection means)
40a Server room temperature sensor 40b Server room humidity sensor 41 Other air conditioners in the group 42 Host equipment system 43 Cloud system

Claims (4)

An air conditioner capable of switching between a direct outdoor air conditioning operation in which outside air is directly introduced into an air-conditioned room and an indirect outdoor air conditioning operation in which the outside air is indirectly introduced into the air-conditioned room,
an air conditioner main body formed in a box shape and provided with a partition portion for partitioning into a first chamber facing the outside air intake side and a second chamber facing the air conditioned room side;
detection means for detecting at least the temperature, humidity, dust, and gas amount of outside air taken into the air-conditioned room through the air conditioner body;
an opening/closing member installed in the partition, opened when the temperature, humidity, dust, and gas amount of the outside air detected by the detection means does not exceed a preset threshold value, and closed when the threshold value is exceeded;
Facing the first chamber and the second chamber so as to intersect the partition within the main body of the air conditioner, the temperature of the outside air and the temperature of the inside air of the air-conditioned room to be cooled can be heat-exchanged for cooling. a heat exchanger installed in
During normal operation when the outside air temperature is below a certain temperature, switching control is performed so that cooling is performed by the indirect outside air air conditioning operation in which the opening/closing member is closed and the inside air cooled through the heat exchanger is introduced into the air-conditioned room. In addition, when the outside air temperature exceeds a predetermined temperature and the outside air temperature, humidity, dust, and gas amount detected by the detecting means do not exceed preset threshold values, the open/close member is opened to allow the outside air to be air-conditioned. a control means for performing switching control so that the air-conditioned room is introduced into the room and cooled by the direct outdoor air-conditioning operation;
An air conditioner comprising: A first opening is formed in the first chamber, an outside air introduction fan for introducing the outside air is installed in the first opening, and the rotation speed of the outside air introduction fan is controlled by a control means. The air conditioner according to claim 1. A second opening is formed in the second chamber, and an inside air introduction fan is installed in the second opening for introducing inside air from the room to be air-conditioned into the second chamber. 3. The air conditioner according to claim 1, wherein the air conditioner is controlled by 4. The air conditioner according to claim 1, further comprising an auxiliary water cooling plate having dehumidifying and humidifying functions in the second chamber.

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