WO2022134105A1

WO2022134105A1 - Modular indirect evaporative cooling system, data center and spraying assembly

Info

Publication number: WO2022134105A1
Application number: PCT/CN2020/139703
Authority: WO
Inventors: 杨宗豪; 李马林
Original assignee: 华为数字能源技术有限公司
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2022-06-30
Also published as: CN116097056A; CN116097056A8

Abstract

A modular indirect evaporative cooling system (10), a data center (60) and a spraying assembly (40). The modular indirect evaporative cooling system (10) comprises a housing (20) and a heat exchange device (20a) arranged inside the housing (20); the heat exchange device (20a) comprises an evaporative heat exchange core (30) and a spraying assembly (40); the spraying assembly (40) comprises a liquid inlet pipe (41), a spraying arm (42) and nozzles (44); the liquid inlet pipe (41) is rotatably connected to the spraying arm (42), and a liquid outlet (411) of the liquid inlet pipe (41) is in communication with the spraying arm (42); a plurality of nozzles (44) are arranged on the spraying arm (42) at intervals, and the nozzles (44) face towards a first surface (31) of the evaporative heat exchange core (30); and at least one end of the spraying arm (42) is provided with at least one rotating spraying opening (421) which is used for driving, when spraying a liquid outwards, the spraying arm (42) to rotate. The invention solves the problems of the existing indirect evaporative cooling systems of a complicated structure, high maintenance cost, a poor refrigeration effect, and energy waste.

Description

Modular indirect evaporative cooling systems, data centers and sprinkler assemblies

technical field

The invention relates to the technical field of indirect evaporative cooling, in particular to a modular indirect evaporative cooling system, a data center and a spray assembly.

Background technique

With the accelerated pace of technological innovation in my country's data center industry, the level of localization of data centers and servers has been continuously improved, and more and more products have emerged. Data centers are also big power consumers. Electronic information equipment and refrigeration units that run uninterrupted throughout the year consume a lot of power. Taking energy-saving measures to reduce the power consumption of refrigeration units is conducive to realizing the energy saving of the entire container data center.

At present, the best energy-saving effect of data centers is to use natural cooling sources such as air and water, which are used to cool the data center in transitional seasons and winters, which can reduce the load of the refrigeration unit of the data center. Indirect evaporative cooling refers to the process of transferring the cooling capacity of the moist air (secondary air) obtained by direct evaporative cooling to the air to be treated (primary air) through a non-direct contact heat exchanger to achieve humidity cooling such as air. Indirect evaporative cooling technology can obtain cold energy from the natural environment. Compared with general conventional mechanical refrigeration, it can save energy by 80% to 90% in hot and dry areas, 20% to 25% in hot and humid areas, and can save energy in medium humidity areas. 40% energy saving, thus greatly reducing the energy consumption of air conditioning and refrigeration.

However, the indirect evaporation system in the prior art has a large number of nozzles, which increases the cost of the spraying system, and the nozzles are easily blocked, the maintenance cost is high, and the spraying water particles are large, which is not easy to evaporate and has a poor cooling effect.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a modular indirect evaporative cooling system, a data center and a spray assembly, which have good cooling effect, simple structure, easy maintenance and energy saving.

In a first aspect, embodiments of the present application provide a modular indirect evaporative cooling system, including: a casing and a heat exchange device disposed inside the casing; wherein,

The heat exchange device includes an evaporative heat exchange core and a spray assembly;

The spray assembly includes a liquid inlet pipe, a spray arm and a nozzle;

the liquid inlet pipe is rotatably connected with the spray arm, and the liquid outlet of the liquid inlet pipe is communicated with the spray arm;

A plurality of the nozzles are arranged on the spray arm at intervals, and the nozzles face the first surface of the evaporative heat exchange core;

At least one end of the spray arm is provided with at least one rotating spray port, and the rotating spray port is used to drive the spray arm to rotate when spraying liquid outward.

In the modular indirect evaporative cooling system provided by the embodiments of the present application, a rotating nozzle is arranged on the spray arm of the spray assembly, so that the spray arm relies on the reaction force generated by the liquid spray to drive the spray arm to the opposite direction of the liquid spray after the spray arm enters the liquid. Rotation, so as to achieve the purpose of rotating the spray arm by its own power, which can expand the radiation range of the spray arm, and does not require the drive of the electric drive mechanism, thereby simplifying the structure of the spray assembly and reducing the cost of maintenance equipment. By arranging a plurality of nozzles at intervals on the spray arm, when the spray arm rotates, the spray arm can drive the nozzles to spray in the rotating space of the spray arm, thereby achieving the effect of cooling the evaporative heat exchange core.

As an explanation, when liquid is sprayed in the rotating nozzle, according to the principle of action force and reaction force, the forward spray force of the spray liquid will give the rotating nozzle a force in the opposite direction, and when the force in the opposite direction is large enough , which can drive the spray arm to rotate.

In a possible implementation of the first aspect, one end of the spray arm is provided with a first rotating spout, the other end of the spray arm is provided with a second rotating spout, and the first rotating spout is used for outward When spraying liquid, one end of the spray arm is driven to rotate along a first direction, and the second rotating nozzle is used to drive the other end of the spray arm to rotate along a second direction opposite to the first direction when spraying liquid outward. .

In a possible implementation manner of the first aspect, the force of the liquid sprayed from the first rotating nozzle at least in the first direction is greater than 0, and the liquid sprayed from the second rotating nozzle is at least in the first direction. The acting force in the second direction is greater than 0, and both the first direction and the second direction are directions tangent to the rotation track of the spray arm.

In a possible implementation manner of the first aspect, a connecting pipe is provided in the middle of the spray arm, the spray arm is rotatably connected to the liquid inlet pipe through the connecting pipe, and the connecting pipe is connected to the liquid inlet pipe. The liquid outlet of the liquid inlet pipe is communicated.

In a possible implementation manner of the first aspect, the first rotating spout and the second rotating spout are centrally symmetric with respect to the connecting pipe.

In a possible implementation manner of the first aspect, the spray arm includes at least two sub-spray arms, and one end of the at least two sub-spray arms is connected to the connecting pipe, and the at least two sub-spray arms One end is communicated through the connecting pipe.

In a possible implementation manner of the first aspect, the number of the sub-spray arms is two, and the two sub-spray arms are connected in a linear shape;

Alternatively, the sub-spray arms have an arc structure, and the two sub-spray arms are connected in an "S" shape;

Alternatively, the sub-spray arms have an arc-shaped structure, and the two sub-spray arms are axially symmetrical with respect to the center of the spray arms.

In a possible implementation of the first aspect, the number of the sub-spray arms is four, and two of the sub-spray arms are connected to each other and the other two of the sub-spray arms are connected in an "S" shape .

In a possible implementation manner of the first aspect, a filter screen is provided between the liquid outlet of the liquid inlet pipe and the spray arm.

In a possible implementation manner of the first aspect, the connecting pipe of the spray arm is provided with an engaging portion, and the engaging portion is rotatably connected with the liquid outlet end of the liquid inlet pipe.

In a possible implementation manner of the first aspect, the engaging portion includes a fixing portion; wherein,

the fixing part is connected with the spray arm and extends in a direction away from the spray arm;

An engaging protrusion is provided on one side of the fixing portion close to the connecting pipe.

In a possible implementation manner of the first aspect, a surface of the engaging protrusion facing the liquid outlet of the liquid inlet pipe is a tapered surface, and a large end of the tapered surface faces the liquid outlet.

In a possible implementation manner of the first aspect, a gasket is sleeved on the outer wall of the connecting pipe, and the gasket is located at one end of the engaging protrusion close to the spray arm.

In a possible implementation manner of the first aspect, the nozzle and the spray arm are connected by screw connection, snap connection or welding.

In a possible implementation manner of the first aspect, the shower assembly further includes a mounting bracket and a controller, and the mounting bracket is fixed on the casing or the first surface of the evaporative heat exchange core superior;

the liquid inlet pipe is fixed on the mounting bracket;

The liquid inlet pipe is connected with a water pump, and the water pump is electrically connected with the controller.

In a possible implementation manner of the first aspect, the first surface of the evaporative heat exchange core is inclined, and the first surface and a part of the inner wall of the casing enclose a liquid spray chamber , the spray assembly is arranged in the liquid spray chamber.

In a possible implementation manner of the first aspect, an outdoor fresh air inlet communicated with the liquid spray chamber is opened on the casing, and a fan is provided in the liquid spray chamber near the outdoor fresh air inlet;

An outdoor air outlet is provided on the shell at a position opposite to the second surface of the evaporative heat exchange core, and the second surface of the evaporative heat exchange core is connected to the first surface of the evaporative heat exchange core. Opposite side.

In a possible implementation manner of the first aspect, the evaporative heat exchange core has a third surface, the third surface is located between the first surface and the second surface, and the shell has a third surface. An indoor air return port is opened on the side wall close to the third surface, and the indoor air return port is used to communicate with the room;

The evaporative heat exchange core body has a fourth surface opposite to the third surface, and an indoor air supply port is opened at a position close to the fourth surface of the casing, and the indoor air supply port is used to transfer the air from the The air blown from the fourth side is discharged into the room.

In a second aspect, an embodiment of the present application provides a data center, including a computer room and at least one modular indirect evaporative cooling system described above, wherein the indoor air return port and the indoor air supply port of the modular indirect evaporative cooling system are the same as those of the above-mentioned modular indirect evaporative cooling system. Internal connectivity of the engine room.

In the data center provided by the embodiments of the present application, a modular indirect evaporative cooling system is provided, and both the indoor air return port and the indoor air supply port of the modular indirect evaporative cooling system are communicated with the interior of the computer room, so that the modular indirect evaporative cooling system can be cooled by The system effectively exchanges the heat in the data center room, thereby cooling the data center, and the spray can effectively increase the free cooling time and reduce the energy consumption of the data center cooling system.

In a possible implementation of the second aspect, the modular indirect evaporative cooling system is located on the top surface of the computer room, or the modular indirect evaporative cooling system is located on one side of the computer room;

and the indoor air return port is communicated with the interior of the machine room through a return air duct;

The indoor air supply port is communicated with the inside of the machine room through an air supply pipe.

In a third aspect, an embodiment of the present application provides a spray assembly, the spray assembly includes a liquid inlet pipe, a spray arm, and a nozzle;

a plurality of the nozzles are arranged on the spray arm at intervals;

In the spray assembly provided by the embodiment of the present application, a rotating nozzle is arranged on the spray arm, so that when the liquid is introduced into the spray arm, the reaction force generated by the spray of liquid outward from the rotating nozzle can push the spray arm to rotate, thereby increasing the number of spray arms. The spraying area, compared with the fixed spraying equipment in the prior art, the spraying equipment in the present application uses fewer nozzles, and the spraying equipment is simple and easy to maintain.

These and other aspects, implementations, and advantages of exemplary embodiments will become apparent from the embodiments described hereinafter, taken in conjunction with the accompanying drawings. It should be understood, however, that the description and drawings are for illustration only and do not serve as definitions of limitations to the present application, see the appended claims for details. Other aspects and advantages of the present application will be set forth in the following description, and in part will be apparent from the description, or learned by practice of the present application. Furthermore, the various aspects and advantages of the present application may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

Description of drawings

1A is a schematic three-dimensional structural diagram of a modular indirect evaporative cooling system provided by the first embodiment of the present application;

1B is a schematic structural diagram of an evaporative heat exchange core of a modular indirect evaporative cooling system provided by the first embodiment of the present application;

2A is a schematic diagram of the installation structure of the spray assembly provided by the first embodiment of the present application;

2B is a schematic view of the working structure of the spray assembly provided in the first embodiment of the present application;

FIG. 2C is a schematic view of the split structure of the spray assembly provided by the first embodiment of the present application;

3 is a front view of the split structure of the spray assembly provided by the first embodiment of the present application;

4 is a schematic cross-sectional view of the split structure of the spray assembly provided by the first embodiment of the present application;

5 is a front view of the installation structure of the spray assembly provided by the first embodiment of the present application;

6 is a first structural schematic diagram of the spray arm in the spray assembly provided by the first embodiment of the present application;

7 is a second structural schematic diagram of the spray arm in the spray assembly provided by the first embodiment of the present application;

8 is a top view of the second structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

9 is a top view of the third structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

10 is a top view of the fourth structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

11A is a fifth structural schematic diagram of the spray arm in the spray assembly provided by the first embodiment of the present application;

11B is a top view of the fifth structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

12A is a top view of the sixth structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

12B is a top view of the seventh structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

12C is a top view of the eighth structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

12D is a top view of the ninth structure of the spray arm in the spray assembly provided by the first embodiment of the present application;

13 is a schematic cross-sectional view of a nozzle in the spray assembly provided by the first embodiment of the present application;

14 is a top view of the filter screen in the spray assembly provided by the first embodiment of the present application;

15 is a schematic diagram of the first structure of the data center provided by the second embodiment of the present application;

16 is a schematic diagram of a second structure of the data center provided by the second embodiment of the present application;

FIG. 17 is a schematic diagram of a third structure of the data center provided by the second embodiment of the present application.

Description of reference numbers:

10-modular indirect evaporative cooling system; 20-shell; 21-outdoor fresh air inlet; 22-outdoor air outlet;

23-indoor return air outlet; 24-indoor air supply outlet; 20a-heat exchange device; 30-evaporative heat exchange core;

31-first side; 32-second side; 33-third side; 34-fourth side;

40-spray assembly; 41-liquid inlet pipe; 411-liquid outlet;

42-spray arm; 421-rotating nozzle; 421a-first rotating nozzle;

421b-the second rotating spout; 422-sub-spray arm; 43-connecting pipe;

431 - engaging part; 432 - fixing part; 433 - engaging protrusion;

434-gasket; 44-nozzle; 50-filter;

60-data center; 61-computer room.

Detailed ways

The first embodiment of the present application provides a modular indirect evaporative cooling system, which uses a spray assembly that can automatically rotate for spraying, thereby effectively simplifying the equipment of the spraying assembly in the prior art, thereby reducing maintenance costs; In addition, in the prior art, it is necessary to provide a motor for the spray equipment to drive the spray equipment to move, while the spray arm in the spray assembly in the present application can be rotated by the power provided by its own spray liquid, thereby saving energy; in addition, the use of water cooling The heat exchange method has the advantages of high efficiency and energy saving.

Water evaporates and absorbs heat and has a cooling function. This physical phenomenon has been used by humans for a long time. For example, splashing some water in a room can lower the room temperature. In hot and dry climate regions (such as the northwest region, etc.), the dry bulb temperature of the air in summer is high and the moisture content is low. The outdoor dry air can not only be used directly to eliminate the humidity load of the air-conditioning area, but also can be eliminated by indirect evaporative cooling, etc. The heat load of the air-conditioned area. In Xinjiang, Inner Mongolia, Gansu, Ningxia, Qinghai, Tibet and other regions, the application of evaporative cooling technology can greatly save the consumption of air conditioning systems.

Evaporative cooling is divided into direct evaporative cooling (Direct Evaporative Cooling, abbreviated as DEC) and indirect evaporative cooling (Indirect Evaporative Cooling, abbreviated as IEC). Direct evaporative cooling refers to the cooling process in which dry air and water are in direct contact. During the air treatment process, heat and mass transfer between air and water occur simultaneously and affect each other. The air treatment process is an adiabatic cooling and humidification process, and its limit temperature can reach The wet bulb temperature of the air.

In some cases, indirect evaporative cooling should be used when there are further requirements for the process air, such as lower moisture content or specific enthalpy. Indirect evaporative cooling can avoid the mutual influence of heat transfer and mass transfer. The air treatment process is an isohumidity cooling process, and its limit temperature can reach the dew point temperature of the air. Indirect evaporative cooling can be divided into two categories: (1) use the secondary air of direct evaporative cooling to dry-cool the primary air (cooled air) through the heat exchanger; (2) use the cold water obtained by evaporative cooling to pass through the heat exchanger Cool the air. In this embodiment, the first method is used: the primary air (cooled air) is dry-cooled by using the secondary air directly evaporatively cooled through the heat exchanger.

As described in the background art, some data centers in the prior art also use the indirect evaporative cooling method to cool down. This method has low energy consumption and good cooling effect, but the indirect evaporative cooling system in the prior art has a large number of nozzles, which increases the The cost of the shower system is high, the nozzles are easily blocked, the maintenance cost is high, and the spray water particles are large, not easy to evaporate, and the cooling effect is not good.

Therefore, in order to solve the above problems, in this embodiment, FIG. 1A is a schematic three-dimensional structure diagram of the modular indirect evaporative cooling system provided by the first embodiment of the present application; FIG. 1B is the modular indirect evaporative cooling system provided by the first embodiment of the present application. Figure 2A is a schematic diagram of the installation structure of the spray assembly provided by the first embodiment of the present application; Figure 2B is a schematic view of the working structure of the spray assembly provided by the first embodiment of the present application; FIG. 2C is a schematic view of the split structure of the spray assembly provided by the first embodiment of the present application; FIG. 3 is a front view of the split structure of the spray assembly provided by the first embodiment of the present application; FIG. 4 is the first embodiment of the present application. Figure 5 is a front view of the installation structure of the spray assembly provided by the first embodiment of the present application.

As shown in FIGS. 1A-5 , the present embodiment provides a modular indirect evaporative cooling system 10 , which may include: a casing 20 and a heat exchange device 20 a disposed inside the casing 20 ; wherein the heat exchange device 20 a includes an evaporative heat exchanger The hot core 30 and the spray assembly 40; the spray assembly 40 includes a liquid inlet pipe 41, a spray arm 42 and a nozzle 44; The arms 42 are in communication; a plurality of nozzles 44 are arranged on the spray arms 42 at intervals, and the nozzles 44 face the first surface 31 of the evaporation heat exchange core 30; at least one end of the spray arms 42 is provided with at least one rotating nozzle 421, and the rotating nozzle 421 is used for The spray arm 42 is driven to rotate when the liquid is sprayed outward.

In the modular indirect evaporative cooling system 10 provided by the embodiment of the present application, the rotating nozzle 421 is provided on the spray arm 42 of the spray assembly 40, so that the spray arm 42 drives the spray arm 42 by the reaction force generated by the liquid spray after the spray arm 42 enters the liquid. Rotate in the opposite direction of the liquid spray, so as to realize the purpose of rotating the spray arm 42 by its own power, so that the radiation range of the spray arm 42 can be expanded, and the drive of the electric transmission mechanism is not required, thereby simplifying the structure of the spray assembly 40 and reducing maintenance. cost of equipment. By arranging a plurality of nozzles 44 on the spray arm 42 at intervals, when the spray arm 42 rotates, the spray arm 42 can drive the nozzles 44 to spray in the rotating space of the spray arm 42, so as to achieve the evaporative heat exchange core 30. cooling effect.

It should be noted that the evaporative heat exchange core 30 may be a hexahedral structure as shown in the figure, a spherical structure or a structure of other shapes. The function of exchanging heat is enough.

Preferably, the nozzles 44 are directed toward the first surface 31 of the evaporative heat exchange core 30, so that the spray liquid sprayed by the nozzles 44 can easily enter the inside of the evaporative heat exchange core 30 directly, thereby preventing the entry of the evaporative heat exchange core. The hot air inside 30 is cooled to improve the utilization rate of the spray liquid, thereby improving the cooling efficiency.

As an explanation, as shown in FIG. 2B , by disposing at least one rotating nozzle 421 at at least one end of the spray arm 42 , the spray arm 42 can be driven to rotate when the rotating nozzle 421 is used to spray liquid outward. According to the principle of action force and reaction force in Newton's third law, when the liquid is sprayed outward from a narrow space (F in the figure is the direction of the liquid's spray force), the liquid is sprayed forward by the hydraulic action, then the forward spray The liquid will give an equal and opposite reaction force at the nozzle (the reaction force is represented by F' in the figure), just like the water gun will experience a recoil when it sprays liquid. When the liquid in this application is sprayed from the rotating nozzle 421, it will also give the rotating nozzle 421 an equal and opposite reaction force (the reaction force is represented by F' in the figure), and the spray arm 42 provided with the rotating nozzle 421 and the inlet The liquid outlet 411 of the liquid pipe 41 is connected in rotation, so when the reaction force is large enough, the spray arm 42 will be driven to rotate around the fixed fulcrum, that is, the liquid outlet 411 of the liquid inlet pipe 41 (the direction of rotation is the dotted line in the figure). v direction indicated by the arrow).

As an explanation, when liquid is sprayed in the rotating nozzle 421, according to the principle of action force and reaction force, the forward spray force of the spray liquid will give the rotating nozzle 421 a force in the opposite direction, and the force in the opposite direction is sufficient. When large, the spray arm 42 can be driven to rotate.

In addition, it should be noted that the number of the rotating nozzles 421, the setting position and the setting angle will affect the rotation speed of the spraying arm 42. Therefore, the setting of the rotating nozzles 421 can be set according to specific needs. The best angle is the same as that of the spraying arm. 42 The tangent direction of the rotation trajectory is the same.

Further, as shown in FIG. 2C-5 , a connecting pipe 43 is provided in the middle of the spray arm 42 , and the spray arm 42 is rotatably connected to the liquid inlet pipe 41 through the connecting pipe 43 , and the connecting pipe 43 is connected to the liquid outlet of the liquid inlet pipe 41 . 411 Connected. By arranging the connecting pipe 43 , the spray arm 42 and the liquid inlet pipe 41 can be conveniently connected in rotation, so that the liquid can be smoothly passed from the liquid inlet pipe 41 to the spray arm 42 .

It should be noted that the specific shape of the connecting pipe 43 can be specifically designed according to the shape of the spray arm 42 . For example, the connecting pipe 43 may be a structure integrally formed with the spray arm 42, or may be a structure fixed on the spray arm 42 by screwing or welding, as long as it can be connected with the liquid inlet pipe 41 and can realize spraying The communication between the arm 42 and the liquid inlet pipe 41 belongs to the protection scope of the technical solution of the present application.

Further, the connecting pipe 43 of the spray arm 42 is provided with an engaging portion 431 , wherein the engaging portion 431 is rotatably connected with the liquid outlet end of the liquid inlet pipe 41 .

Further, the engaging portion 431 includes a fixing portion 432; wherein, the fixing portion 432 is connected to the spray arm 42 and extends in a direction away from the spray arm 42; a side of the fixing portion 432 close to the connecting pipe 43 is provided with an engaging protrusion 433 .

Further, the surface of the engaging protrusion 433 facing the liquid outlet 411 of the liquid inlet pipe 41 is a tapered surface, and the large end of the tapered surface faces the liquid outlet 411 .

Further, a gasket 434 is sleeved on the outer wall of the connecting pipe 43 , and the gasket 434 is located at one end of the engaging protrusion 433 close to the spray arm 42 .

In this embodiment, by designing the connecting pipe 43 to have a structure with an engaging portion 431, the installation between the liquid inlet pipe 41 and the spray arm 42 can be facilitated; The connection with the liquid inlet pipe 41 is realized by arranging a protruding structure on the non-engaging portion, which can simplify the structure of the engaging portion 431 and reduce the production cost; This can ensure the connection stability between the spray arm 42 and the liquid inlet pipe 41; by setting the gasket 434 on the outer wall of the connecting pipe 43, the connection stability can be ensured on the one hand, and the spray arm can also be guaranteed on the other hand. The tightness between 42 and the liquid inlet pipe 41.

It should be noted that the spray arm 42 and the liquid inlet pipe 41 in the present application may not be absolutely sealed, because the spray equipment achieves cooling by spraying liquid, so a little leakage phenomenon will only affect the strength of the liquid spray, But it will not have a particularly big impact on cooling and waterproofing.

Further, FIG. 6 is a first structural schematic diagram of the spray arm in the spray assembly provided by the first embodiment of the present application; as shown in FIG. 6 , the spray arm 42 in the embodiment of the present application may include two sub-spray arms 422 , and one end of the two sub-spray arms 422 is connected with the connecting pipe 43. Specifically, the two sub-spray arms 422 in this embodiment are connected in a linear shape, and one end of the spray arms 42 is provided with a first rotating nozzle 421a The other end of the spray arm 42 is provided with a second rotating nozzle 421b, and the first rotating nozzle 421a is used to drive one end of the spray arm 42 to rotate along the first direction when spraying liquid outward, and the second rotating nozzle 421b is used for outward When spraying liquid, the other end of the spray arm 42 is driven to rotate in a second direction opposite to the first direction.

It should be noted that both the first direction and the second direction in this embodiment are the same as the direction tangent to the rotation trajectory of the sub-spray arm 422 . In this embodiment, the spraying direction of the first rotating nozzle 421a is opposite to the first direction, the spraying direction of the second rotating nozzle 421b is opposite to the second direction, and both the first direction and the second direction are opposite to the end of the spray arm 42 . The axis is vertical, so that the force for driving the spray arm 42 to rotate can be maximized, so that it is easier to drive the spray arm 42 to rotate.

It should be further noted that the force of the liquid sprayed from the first rotating nozzle 421a in at least the first direction is greater than 0, the force of the liquid sprayed from the second rotating nozzle 421b at least in the second direction is greater than 0, and the Both the first direction and the second direction are directions tangent to the rotational trajectory of the spray arm 42 .

7 is a schematic diagram of the second structure of the spray arm in the spray assembly provided by the first embodiment of the present application; FIG. 8 is a top view of the second structure of the spray arm in the spray assembly provided by the first embodiment of the present application 9 is a top view of the third structure of the spray arm in the spray assembly provided by the first embodiment of the present application. As shown in FIGS. 7-9 , the spray arm 42 in the embodiment of the present application includes two sub-spray arms 422, and one end of the two sub-spray arms 422 is connected to the connecting pipe 43. Specifically, the sub-spray arms in this embodiment are The arm 422 has an arc structure, and the two sub-spray arms 422 are connected in an "S" shape. One end of the spray arm 42 is provided with a first rotating nozzle 421a, and the other end of the spray arm 42 is provided with a second rotating nozzle 421b, and The first rotating nozzle 421a is used to drive one end of the spray arm 42 to rotate along the first direction when spraying liquid outward, and the second rotating nozzle 421b is used to drive the other end of the spray arm 42 to rotate along the first direction when spraying liquid outward. Turn in the opposite second direction.

It should be noted that both the first direction and the second direction in this embodiment are the same as the direction tangent to the rotation trajectory of the sub-spray arm 422 . In this embodiment, the spraying direction of the first rotating nozzle 421a is opposite to the first direction, the spraying direction of the second rotating nozzle 421b is opposite to the second direction, and both the first direction and the second direction are opposite to the end of the spray arm 42 The axes are parallel, so that the force for driving the spray arm 42 to rotate can be maximized, so that it is easier to drive the spray arm 42 to rotate.

It should be noted that, compared with the linear sub-spray arms 422 in this embodiment, the geometric length of the arc-shaped sub-spray arms 422 in the same space is larger, so that more nozzles 44 can be arranged in the same space, and furthermore Increase the density of the spray, so that the cooling efficiency can be improved in the same time.

It should be further noted that the first direction and the second direction are not necessarily parallel to the spray arm 42, the force of the liquid sprayed from the first rotating nozzle 421a in at least the first direction is greater than 0, and the second rotating nozzle 421b sprays out The force of the liquid in at least the second direction is greater than 0, and both the first direction and the second direction are directions tangent to the rotation track of the spray arm 42 . Specifically, it can be set according to the specific situation, which is not specifically limited here.

Further, the first rotating spout 421a and the second rotating spout 421b may be centrally symmetrical with respect to the connecting pipe 43 . In this way, it can be ensured that the component force in the first direction when the first rotating nozzle 421a sprays liquid is equal to the component force in the second direction when the second rotating nozzle 421b sprays liquid, so as to ensure that the driving forces at both ends of the spray arm 42 are equal, thereby The stable rotation of the spray arm 42 can be ensured.

Further, FIG. 10 is a top view of the fourth structure of the spray arm in the spray assembly provided by the first embodiment of the present application. As shown in FIG. 10 , the spray arm 42 in the embodiment of the present application includes two sub-spray arms 422 , and one end of the two sub-spray arms 422 is connected to the connecting pipe 43 . Specifically, the sub-spray arms 422 in this embodiment are In an arc structure, the two sub-spray arms 422 are axially symmetrical with respect to the center of the spray arm 42, and one end of the spray arm 42 is provided with a first rotating nozzle 421a, and the other end of the spray arm 42 is provided with a second rotating nozzle 421b, and The first rotating nozzle 421a is used to drive one end of the spray arm 42 to rotate along the first direction when spraying liquid outward, and the second rotating nozzle 421b is used to drive the other end of the spray arm 42 to rotate along the first direction when spraying liquid outward. Turn in the opposite second direction.

It should be noted that the shape of the sub-spray arm 422 can be specifically set according to the number of nozzles 44 and the spray space, as long as it can be driven by its own liquid spray, it belongs to the protection scope of the present application.

11A is a schematic diagram of the fifth structure of the spray arm in the spray assembly provided by the first embodiment of the present application; FIG. 11B is a top view of the fifth structure of the spray arm in the spray assembly provided by the first embodiment of the present application .

As shown in FIGS. 11A and 11B , the number of the sub-spray arms 422 in the embodiment of the present application is four, and the two sub-spray arms 422 are connected to each other and the other two sub-spray arms 422 are connected in an “S” shape, and each sub-spray arm 422 is connected in an “S” shape. One end of the spray arm 422 is provided with a rotating nozzle 421, and the spraying direction of each rotating nozzle 421 is parallel to the end axis of the spraying arm 42, and the spraying direction is opposite to the rotating direction of the sub spraying arm 422, so as to ensure that the sub-spraying arm 422 can be driven. The spray arm 422 rotates.

It should be noted that the spraying directions of the rotating nozzles 421 on the four sub-spray arms 422 are not necessarily set to the directions shown in the figure, and other directions can also be designed according to specific needs, as long as the spray arms 42 can be rotated, it belongs to The protection scope of the technical solutions of the embodiments of the present application.

It should be noted that, FIG. 12A is a top view of the sixth structure of the spray arm in the spray assembly provided by the first embodiment of the present application; FIG. 12B is the spray arm in the spray assembly provided by the first embodiment of the present application. The top view of the seventh structure; FIG. 12C is the top view of the eighth structure of the spray arm in the spray assembly provided by the first embodiment of the present application; FIG. 12D is the spray arm in the spray assembly provided by the first embodiment of the present application. Top view of the ninth configuration of the arm. As shown in FIG. 12A-- FIG. 12D , the structure of the spray arm 42 is not limited to including two sub-spray arms 422, and there may be only one spray arm 42, and the connecting pipe 43 is arranged at one end of the spray arm 42; one end of the spray arm 42 The number of rotary nozzles 421 provided is not limited to one, but can also be set to two or three, and the number of rotary nozzles 421 located at both ends of the spray arm 42 is not necessarily the same, which can be specifically designed according to specific needs. In addition, the directions of the rotating nozzles 421 provided at both ends of the spray arm 42 are not necessarily opposite, as long as they can be used together and drive and rotate the spray arm 42 . In addition, the shape of the rotating nozzle 421 is not specifically limited here, as long as it can spray liquid, it belongs to the protection scope of the technical solution of the present application.

Further, FIG. 14 is a top view of the filter screen in the spray assembly provided by the first embodiment of the present application. As shown in FIGS. 2C-4 and 14 , a filter screen 50 is provided between the liquid outlet 411 of the liquid inlet pipe 41 and the spray arm 42 in the embodiment of the present application. By arranging the filter screen 50, the liquid entering the spray arm 42 can be effectively filtered, which can reduce the impurities entering the spray arm 42, and can effectively prevent the spray arm 42 and the nozzles 44 arranged on the spray arm 42 from clogging, thereby extending the length of the spray arm 42. The service life of the spray arm 42 and the nozzle 44.

Further, the nozzle 44 in the embodiment of the present application may also be provided with a filter screen 50. By arranging the filter screen 50 on the nozzle 44, the blockage of the nozzle 44 can be reduced, and the hydraulic pressure at the nozzle 44 can be increased by providing the filter screen 50. As a result, the particles of the spray water can be reduced, thereby accelerating the evaporation, and thereby improving the cooling efficiency.

Further, FIG. 13 is a schematic cross-sectional view of the nozzle in the spray assembly provided by the first embodiment of the present application. As shown in FIG. 13 , in the embodiment of the present application, the nozzle 44 and the spray arm 42 may be connected by screw connection, snap connection or welding.

It should be noted that the nozzle 44 and the spray arm 42 are fixed by screw connection or snap connection, which is convenient for connection and replacement, which can effectively reduce the maintenance cost; welding between the nozzle 44 and the spray arm 42 can improve the nozzle The connection between 44 and the spray arm 42 is firm, so that the service life of the components in the basin can be prolonged, and the welding method has good sealing performance, which can improve the spray efficiency.

It should be noted that the material of the nozzle 44 in this embodiment can be metal or plastic, as long as it can realize spraying. In addition, the structure of the nozzle 44 can use the existing nozzle 44 or the nozzle The nozzles 44 with smaller diameters and the directly smaller nozzles 44 can improve the atomization of the spray liquid and refine the particle size of the spray water.

Further, the spray assembly 40 in the embodiment of the present application further includes a mounting bracket and a controller, the mounting bracket is fixed on the first surface 31 of the casing 20 or the evaporative heat exchange core 30; the liquid inlet pipe 41 is fixed on the mounting bracket The liquid inlet pipe 41 is connected with the water pump, and the water pump is electrically connected with the controller.

When using the modular indirect evaporative cooling system 10 of the present application, the opening and closing of the system is controlled by a controller, wherein the controller can be controlled manually or intelligently, so that the spray components can be controlled according to the actual situation 40 working hours, thereby ensuring that the modular indirect evaporative cooling system 10 can be reasonably used for cooling, thereby ensuring the rational use of energy, not wasting energy, and ensuring better cooling effect.

It should be noted that the mounting bracket in the embodiment of the present application can be fixed on the casing 20 or the evaporating heat exchange core 30 by means of buckles, clamps, etc., and the specific structure thereof is not specified in the embodiment of the present application. It is limited as long as the shower assembly 40 can be fixed.

Further, as shown in FIGS. 1A and 1B , the first surface 31 of the evaporative heat exchange core 30 in the embodiment of the present application is inclined, and the first surface 31 and a part of the inner wall of the casing 20 form a liquid spray cavity. The spraying assembly 40 is arranged in the liquid spraying chamber.

Specifically, a liquid recovery device may be installed in the liquid spray chamber, so that the liquid in the liquid spray chamber can be recycled, so that the spray liquid can be recycled and resources can be saved.

It should be noted that the installation position of the spray assembly 40 in the embodiment of the present application can also be set at other positions, as long as the nozzle 44 of the spray assembly 40 can be sprayed to the evaporative heat exchange core 30 .

Further, the housing 20 in the embodiment of the present application is provided with an outdoor fresh air inlet 21 that communicates with the liquid spray chamber, and a fan is provided in the liquid spray chamber near the outdoor fresh air inlet 21; the housing 20 is connected to the evaporative heat exchange core. An outdoor air outlet 22 is opened at a position opposite to the second surface 32 of the evaporative heat exchange core 30 , and the second surface 32 of the evaporative heat exchange core 30 is opposite to the first surface 31 of the evaporative heat exchange core 30 .

Further, the evaporative heat exchange core 30 in the embodiment of the present application has a third surface 33 , the third surface 33 is located between the first surface 31 and the second surface 32 , and the side wall of the casing 20 close to the third surface 33 An indoor air return port 23 is opened on the upper part, and the indoor air return port 23 is used to communicate with the indoor; The indoor air vent 24 is used to discharge the airflow blown from the fourth surface 34 into the room.

In the modular indirect evaporative cooling system 10 in the embodiment of the present application, by arranging the filter screen 50 between the spray arm 42 and the liquid inlet pipe 41 , the sprayed liquid can not be easily scaled, so that the evaporative heat exchange core 30 can be reduced. The requirements for water quality reduce the cost of front-end treatment; the centrifugal force generated by the rotation of the spray arm 42 accelerates the atomization of the spray, and the reduction of the aperture of the nozzle 44 can refine the particle size of the spray water and improve the cooling efficiency; greatly reduces the number of nozzles 44 , thereby reducing the number of replacement nozzles 44 and reducing maintenance costs; the spraying assembly 40 can be intermittently sprayed through the controller, thereby reducing water waste and eliminating the need for an electric drive mechanism.

15 is a schematic diagram of the first structure of the data center provided by the second embodiment of the present application; FIG. 16 is a schematic diagram of the second structure of the data center provided by the second embodiment of the present application; Schematic diagram of the third structure of the data center. As shown in FIGS. 15-17 , the second embodiment of the present application provides a data center 60 , including a computer room 61 and the modular indirect evaporative cooling system 10 introduced in the first embodiment, wherein the indoor room of the modular indirect evaporative cooling system 10 Both the air return port 23 and the indoor air supply port 24 communicate with the inside of the machine room 61 .

In the data center 60 provided in the embodiment of the present application, the modular indirect evaporative cooling system 10 is provided, and the indoor air return port 23 and the indoor air supply port 24 of the modular indirect evaporative cooling system 10 are both communicated with the interior of the computer room 61, so that the modular indirect evaporative cooling system 10 can be The indirect evaporative cooling system 10 effectively exchanges the heat in the computer room 61 of the data center 60 with cold and heat, thereby realizing the cooling of the data center 60, and the spray can effectively increase the free cooling time and reduce the energy of the cooling system of the data center 60. consumption.

Further, as shown in FIGS. 15-17 , in this embodiment, the modular indirect evaporative cooling system 10 is located on the top surface of the computer room 61, or the modular indirect evaporative cooling system 10 is located on one side of the computer room 61; and the indoor air return port 23 is communicated with the interior of the machine room 61 through a return air duct; the indoor air supply port 24 is communicated with the interior of the machine room 61 through an air supply duct.

As shown in Figures 15-17, when the modular indirect evaporative cooling system 10 is used to cool the data center 60, the hot air in the equipment room 61 enters the modular indirect evaporative cooling system 10 through the indoor air return port 23, and enters the evaporative cooling system 10. In the hot core 30, the hot air entering the evaporative heat exchange core 30 is cooled by the spray assembly 40, and then the indoor air supply port 24 sends the cold air back to the inside of the machine room 61, thereby cooling the hot air in the machine room 61. heat exchange, so as to achieve the effect of cooling the machine room 61. In addition, by sucking in the outdoor fresh air, and then exhausting it from the outdoor air outlet 22 through the evaporative heat exchange core 30, the evaporative heat exchange core 30 The heat inside is taken away, thereby speeding up the heat exchange efficiency.

As shown in FIGS. 2A-14 , the third embodiment of the present application provides a spray assembly 40 . The spray assembly 40 includes a liquid inlet pipe 41 , a spray arm 42 and a nozzle 44 ; the liquid inlet pipe 41 is rotatably connected to the spray arm 42 , And the liquid outlet 411 of the liquid inlet pipe 41 is communicated with the spray arm 42; a plurality of nozzles 44 are arranged on the spray arm 42 at intervals; at least one end of the spray arm 42 is provided with at least one rotating nozzle 421, and the rotating nozzle 421 is used to spray outwards The spray arm 42 is driven to rotate when the liquid is in liquid state.

In the spray assembly 40 provided in the embodiment of the present application, the spray arm 42 is provided with a rotating nozzle 421, so that when liquid is introduced into the spray arm 42, the reaction force generated by the spray of liquid from the rotating nozzle 421 to the outside can push the spray arm 42 Rotation, thereby increasing the spraying area of the spraying arm 42. Compared with the fixed spraying equipment in the prior art, the spraying equipment in the present application uses fewer nozzles 44, and the spraying equipment is simple and easy to maintain.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or an intermediate connection. The medium is indirectly connected, which can be the internal communication of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, it is implied that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation on the application. In the description of this application, "plurality" means two or more, unless it is precisely and specifically specified otherwise.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims

A modular indirect evaporative cooling system, comprising: a shell and a heat exchange device arranged inside the shell; wherein,

The heat exchange device includes an evaporative heat exchange core and a spray assembly;

The spray assembly includes a liquid inlet pipe, a spray arm and a nozzle;

the liquid inlet pipe is rotatably connected with the spray arm, and the liquid outlet of the liquid inlet pipe is communicated with the spray arm;

A plurality of the nozzles are arranged on the spray arm at intervals, and the nozzles face the first surface of the evaporative heat exchange core;

At least one end of the spray arm is provided with at least one rotating spray port, and the rotating spray port is used to drive the spray arm to rotate when spraying liquid outward.
The modular indirect evaporative cooling system according to claim 1, wherein one end of the spray arm is provided with a first rotary jet, the other end of the spray arm is provided with a second rotary jet, and the first rotary The nozzle is used to drive one end of the spray arm to rotate along the first direction when spraying liquid outward, and the second rotating nozzle is used to drive the other end of the spray arm to rotate in the opposite direction to the first direction when spraying liquid outward. rotate in the second direction.
The modular indirect evaporative cooling system according to claim 2, wherein the force of the liquid sprayed from the first rotating nozzle at least in the first direction is greater than 0, and the second rotating nozzle sprays The force of the liquid at least in the second direction is greater than 0, and both the first direction and the second direction are directions tangent to the rotation track of the spray arm.
The modular indirect evaporative cooling system according to claim 2 or 3, wherein a connecting pipe is provided in the middle of the spray arm, and the spray arm is rotatably connected to the liquid inlet pipe through the connecting pipe, and The connecting pipe is communicated with the liquid outlet of the liquid inlet pipe.
The modular indirect evaporative cooling system according to claim 4, wherein the first rotating nozzle and the second rotating nozzle are centrally symmetrical with respect to the connecting pipe.
The modular indirect evaporative cooling system according to claim 4, wherein the spray arm comprises at least two sub-spray arms, and both ends of the at least two sub-spray arms are connected to the connecting pipe, and the One ends of the at least two sub-spray arms are communicated through the connecting pipe.
The modular indirect evaporative cooling system according to claim 6, wherein the number of the sub-spray arms is two, and the two sub-spray arms are connected in a linear shape;

Alternatively, the sub-spray arms have an arc structure, and the two sub-spray arms are connected in an "S" shape;

Alternatively, the sub-spray arms have an arc-shaped structure, and the two sub-spray arms are axially symmetrical with respect to the center of the spray arms.
The modular indirect evaporative cooling system according to claim 6, wherein the number of the sub-spray arms is four, and two of the sub-spray arms are connected to each other and the other two of the sub-spray arms are connected to each other. It has an "S" shape.
The modular indirect evaporative cooling system according to any one of claims 1-8, wherein a filter screen is provided between the liquid outlet of the liquid inlet pipe and the spray arm.
The modular indirect evaporative cooling system according to any one of claims 4-8, wherein the connecting pipe of the spray arm is provided with an engaging portion, and the engaging portion is connected to the liquid outlet end of the liquid inlet pipe. Turn the connection.
The modular indirect evaporative cooling system according to claim 10, wherein the engaging portion comprises a fixing portion; wherein,

the fixing part is connected with the spray arm and extends in a direction away from the spray arm;

An engaging protrusion is provided on one side of the fixing portion close to the connecting pipe.
The modular indirect evaporative cooling system according to claim 11, wherein a surface of the engaging protrusion facing the liquid outlet of the liquid inlet pipe is a tapered surface, and a large end of the tapered surface faces the Liquid outlet.
The modular indirect evaporative cooling system according to claim 11 or 12, characterized in that, a gasket is sleeved on the outer wall of the connecting pipe, and the gasket is located at one end of the engaging protrusion close to the spray arm.
The modular indirect evaporative cooling system according to any one of claims 1-13, wherein the nozzle and the spray arm are connected by screw connection, snap connection or welding.
The modular indirect evaporative cooling system according to any one of claims 1-14, wherein the spray assembly further comprises a mounting bracket and a controller, and the mounting bracket is fixed on the housing or the evaporative cooling system. the first side of the thermal core;

the liquid inlet pipe is fixed on the mounting bracket;

The liquid inlet pipe is connected with a water pump, and the water pump is electrically connected with the controller.
The modular indirect evaporative cooling system according to any one of claims 1-12, wherein the first surface of the evaporative heat exchange core is inclined, and the first surface is connected to the casing. A part of the inner wall of the spraying chamber forms a liquid spraying chamber, and the spraying component is arranged in the liquid spraying chamber.
The modular indirect evaporative cooling system of claim 16, wherein:

The shell is provided with an outdoor fresh air inlet communicating with the liquid spray chamber, and a fan is arranged in the liquid spray chamber near the outdoor fresh air inlet;

An outdoor air outlet is provided on the shell at a position opposite to the second surface of the evaporative heat exchange core, and the second surface of the evaporative heat exchange core is connected to the first surface of the evaporative heat exchange core. one side opposite.
The modular indirect evaporative cooling system of claim 17, wherein the evaporative heat exchange core has a third face, the third face being located between the first face and the second face, An indoor air return port is opened on the side wall of the casing close to the third surface, and the indoor air return port is used to communicate with the indoor;

The evaporative heat exchange core body has a fourth surface opposite to the third surface, and an indoor air supply port is opened at a position close to the fourth surface of the casing, and the indoor air supply port is used to transfer the air from the The air blown from the fourth side is discharged into the room.
A data center, characterized in that it includes a computer room and at least one modular indirect evaporative cooling system according to any one of the preceding claims 1-18, wherein the indoor air return port and the indoor air supply port of the modular indirect evaporative cooling system are The interior of the machine room is communicated.
The data center according to claim 19, wherein the modular indirect evaporative cooling system is located on the top surface of the computer room, or the modular indirect evaporative cooling system is located on one side of the computer room;

and the indoor air return port is communicated with the interior of the machine room through a return air duct;

The indoor air supply port is communicated with the inside of the machine room through an air supply pipe.
A spray assembly, characterized in that the spray assembly comprises a liquid inlet pipe, a spray arm and a nozzle;

the liquid inlet pipe is rotatably connected with the spray arm, and the liquid outlet of the liquid inlet pipe is communicated with the spray arm;

a plurality of the nozzles are arranged on the spray arm at intervals;

At least one rotating nozzle is provided at at least one end of the spray arm, and the rotating nozzle is used to drive the spray arm to rotate when spraying liquid outward.