CN216357937U - Evaporative cooling device and communication system - Google Patents

Abstract

The utility model discloses an evaporative cooling device and a communication system, relates to the technical field of evaporative cooling devices, and aims to solve the problem that the evaporative cooling device in the prior art is high in energy consumption. The evaporative cooling device comprises a heat exchange device, an indoor air duct, an outdoor air duct, a filtering device and a cold compensation device. The heat exchange device is provided with a first gas flow passage and a second gas flow passage. The first gas flow channel and the second gas flow channel are separated from each other. The first gas flow path includes a first gas inlet and a first gas outlet and the second gas flow path includes a second gas inlet and a second gas outlet. The indoor air duct is communicated with the first air inlet and the first exhaust port. The outdoor air duct is communicated with the second air inlet and the second air outlet. The filtering device is arranged in the indoor air channel and used for filtering the air flowing into the first air inlet. Part of the cold compensating device is arranged in the indoor air duct, and the cold compensating device is used for cooling the gas flowing out of the first exhaust port. The evaporative cooling device provided by the utility model is used for refrigeration.

Description

Evaporative cooling device and communication system

Technical Field

The present invention relates to the field of evaporative cooling devices, and in particular, to an evaporative cooling device and a communication system.

Background

In the prior art, data centers typically include evaporative cooling devices that include mechanical refrigeration equipment, such as compressors. The refrigerant is compressed by the compressor and is driven to circularly flow in the refrigerant circulating pipeline, so that the cooling and heat dissipation of the data center machine room are realized.

The inventor finds that at least the following problems exist in the prior art: the evaporative cooling device depends on mechanical refrigeration equipment to realize a heat dissipation function, so that the energy consumption of the evaporative cooling device is high, and the energy consumption required by heat dissipation of a data center machine room is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides an evaporative cooling device and a communication system, aiming at solving the technical problem that the energy consumption of the evaporative cooling device is high in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, the utility model provides an evaporative cooling device, which comprises a heat exchange device, a first gas channel and a second gas channel, wherein the first gas channel and the second gas channel are arranged and are separated from each other; the indoor air duct is communicated with the first air inlet and the first exhaust port; the outdoor air duct is communicated with the second air inlet and the second air outlet; the filtering device is arranged in the indoor air channel and is used for filtering the gas flowing into the first air inlet; and part of the cold compensating devices are arranged in the indoor air duct and are used for cooling the gas flowing out of the first exhaust port.

The evaporative cooling device provided by the utility model is provided with the indoor air duct communicated with the first air inlet and the first exhaust port, and the outdoor air duct communicated with the second air inlet and the second exhaust port, so that outdoor circulating gas can be cooled through the heat exchange device, the indoor circulating gas is cooled, the full utilization of a natural cold source is realized, and the energy consumption of the evaporative cooling device is reduced. Therefore, when the evaporative cooling device is used for a data center machine room, energy consumption required by heat dissipation of the data center machine room can be reduced, and the energy efficiency index of the data center machine room is reduced (the energy efficiency index of the data center is total energy consumption/server energy consumption of the data center).

Set up the gas that the first exhaust port of cold supply device cooling flowed out to when the nature cold source can not satisfy the refrigeration demand, through opening cold supply device, can further cool down the cooling to indoor circulating gas, realized the combination of nature cold source refrigeration and mechanical refrigeration, improved evaporative cooling device's refrigeration performance, make evaporative cooling device can have these two kinds of different operational modes of natural cooling mode and mechanical cooling mode, satisfy different refrigeration demands, improve evaporative cooling device's suitability. And set up the gas that the first exhaust port flows out of cooling device cooling, can also avoid the heat transfer process to cause the loss to the cold volume that the cooling device supplyed, ensured evaporative cooling device's refrigeration effect.

The first gas flow channel and the second gas flow channel are arranged to be mutually separated, so that gas in the second gas flow channel is prevented from flowing into the first gas flow channel, the outdoor circulating gas is prevented from polluting the indoor circulating gas, and the use reliability of the evaporative cooling device is improved.

Set up filter equipment and filter the gas that flows into first air inlet, can reduce the impurity among the indoor circulating gas, avoid impurity among the indoor circulating gas to cause heat transfer device to block up, improved evaporative cooling device's use reliability.

Optionally, the cooling device comprises a compressor including a refrigerant inlet and a refrigerant outlet; a refrigerant circulation line communicating with the refrigerant inlet and the refrigerant outlet; the condenser is arranged in the outdoor air channel and comprises a condenser inlet and a condenser outlet, and the condenser inlet is communicated with the refrigerant outlet; and the evaporator is arranged in the indoor air channel, one end of the evaporator is communicated with the outlet of the condenser, and the other end of the evaporator is communicated with the refrigerant inlet.

Optionally, the indoor air duct includes an indoor air inlet; one end of the indoor air inlet duct is communicated with an indoor air inlet, and the other end of the indoor air inlet duct is communicated with a first air inlet; an indoor air outlet; one end of the indoor air exhaust duct is communicated with the indoor air outlet, and the other end of the indoor air exhaust duct is communicated with the first air outlet; the filtering device is arranged in the indoor air inlet duct, and the evaporator is arranged in the indoor air exhaust duct.

Optionally, the evaporative cooling device further includes a first fan disposed between the heat exchanger and the evaporator, and the first fan is a variable frequency fan.

Optionally, the outdoor air duct includes an outdoor air inlet; one end of the outdoor air inlet channel is communicated with the outdoor air inlet, and the other end of the outdoor air inlet channel is communicated with the second air inlet; an outdoor air outlet; one end of the outdoor air exhaust duct is communicated with the outdoor air outlet, and the other end of the outdoor air exhaust duct is communicated with the second air outlet; the condenser is arranged in the outdoor air exhaust duct.

Optionally, the evaporative cooling device further comprises a second fan, which is arranged between the heat exchange device and the condenser, and the second fan is a variable frequency fan.

Optionally, the evaporative cooling device further comprises a humidifying device arranged in the outdoor air inlet duct.

Optionally, the humidifying device comprises a spraying device for spraying liquid; the liquid collecting tank is connected with the outdoor air inlet duct along the flowing direction of liquid in the outdoor air inlet duct and is used for containing liquid sprayed by the spraying device; one end of the connecting pipeline is communicated with the liquid collecting tank, and the other end of the connecting pipeline is communicated with the spraying device; and the driving device is communicated with the connecting pipeline and is used for driving the liquid in the connecting pipeline to flow.

Optionally, the evaporative cooling device further comprises a temperature detection device for detecting the temperature of at least one of the indoor air duct and the outdoor air duct; and the control device is used for controlling the running states of the cold compensating device and the humidifying device according to the temperature of at least one of the indoor air duct and the outdoor air duct.

In another aspect, the present invention provides a communication system, including a housing, the housing enclosing to form an accommodating space; as in the evaporative cooling device according to the first aspect, the indoor air inlet and the indoor air outlet of the indoor air duct are respectively communicated with the accommodating space.

The present invention provides a communication system including the evaporative cooling device of the first aspect, and therefore has all the advantages of the first aspect, and will not be described herein again.

Drawings

FIG. 1 is a schematic structural diagram of an evaporative cooling device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an evaporative cooling device according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cooling device according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an evaporative cooling device according to another embodiment of the present invention;

FIG. 5 is a schematic view of an evaporative cooling apparatus according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a humidifying device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An evaporative cooling device 100 is provided in an embodiment of the present invention. As shown in fig. 1, the evaporative cooling device 100 is provided with a first gas flow passage 111 and a second gas flow passage 112. The first gas flow path 111 and the second gas flow path 112 are separated from each other. As shown in fig. 2, the first gas flow path 111 includes a first gas inlet 113 and a first gas outlet 114. The second gas flow passage 112 includes a second gas inlet 115 and a second gas outlet 116. The indoor duct 120 communicates with the first air inlet 113 and the first air outlet 114. The outdoor air duct 130 communicates with the second air inlet 115 and the second air outlet 116. The filtering device 140 is disposed in the indoor duct 120, and the filtering device 140 is used to filter the gas flowing into the first inlet 113. A portion of the cooling device 150 is disposed in the indoor air duct 120, and the cooling device 150 is used for cooling the air flowing out of the first exhaust port 114.

In some embodiments, the evaporative cooling device 100 is used in a data center room to reduce the temperature of the air circulating within the data center room.

In some embodiments, the heat exchange device 110 may be a plate heat exchanger, a fin heat exchanger, a tube heat exchanger, or the like. The heat exchanging device 110 is provided with a first gas flow passage 111 and a second gas flow passage 112, and it can be understood that the gas flowing in the first gas flow passage 111 and the gas flowing in the second gas flow passage 112 can exchange heat through the heat exchanging device 110.

In some embodiments, the heat exchanging device 110 may be made of a metal material such as aluminum foil or copper, or may be made of a polymer material such as rubber or silica gel, so as to improve the heat exchanging effect between the gas in the first gas flow channel 111 and the gas in the second gas flow channel 112. In some embodiments, the number of the first gas flow channel 111 and the second gas flow channel 112 may be one or more, and the number of the first gas flow channel 111 and the second gas flow channel 112 may be the same or different.

It is understood that the air in the indoor air duct 120 is an indoor circulating gas, such as air or a mixed inert gas. The air in the outdoor air duct 130 is outdoor circulating air, such as outside air. In some embodiments, the indoor circulating gas is internal circulating air of a data center room, and the outdoor circulating gas is outside air.

The indoor air duct 120 is communicated with the first air inlet 113 and the first air outlet 114, and as shown by the arrow direction in fig. 2, the indoor circulating gas can flow into the first gas flow passage 111 through the first air inlet 113, and flow out of the first gas flow passage 111 through the first air outlet 114, and flow into the indoor air duct 120 again in a circulating manner. The outdoor air duct 130 is connected to the second air inlet 115 and the second air outlet 116, and as shown by the arrows in fig. 2, the outdoor circulating air can flow into the second air flow passage 112 through the second air inlet 115, and flow out of the second air flow passage 112 through the second air outlet 116, and flow into the outdoor air duct 130 again in a circulating manner.

Through setting up indoor wind channel 120 and being linked together with first air inlet 113 and first exhaust port 114, outdoor wind channel 130 is linked together with second air inlet 115 and second exhaust port 116, make indoor circulating gas can flow into first gas runner 111, outdoor circulating gas can flow into second gas runner 112, thereby indoor circulating gas and outdoor circulating gas can carry out the heat transfer through heat transfer device 110, make outdoor circulating gas can cool down indoor circulating gas and cool down, realized cooling down indoor circulating gas through natural cold source, thereby reduce evaporative cooling device 100's energy consumption.

In addition, the first gas flow channel 111 and the second gas flow channel 112 are separated from each other, so that the gas in the second gas flow channel 112 is prevented from flowing into the first gas flow channel 111, thereby preventing the outdoor circulating gas from polluting the indoor circulating gas, and improving the use reliability of the evaporative cooling device 100.

In some embodiments, the number of the first intake port 113 and the first exhaust port 114 may be one or more. The indoor duct 120 may be in communication with one first air inlet 113 and one first air outlet 114, or may be in communication with a plurality of first air inlets 113 and a plurality of first air outlets 114, respectively. It is understood that the number of the first intake ports 113 and the first exhaust ports 114 may be the same or different.

In some embodiments, the number of the second air inlets 115 and the second air outlets 116 may be one or more. The outdoor air duct 130 may be in communication with one second air inlet 115 and one second air outlet 116, or may be in communication with a plurality of second air inlets 115 and a plurality of second air outlets 116, respectively. It is understood that the number of the second air inlets 115 and the second air outlets 116 may be the same or different.

Part of the cooling device 150 is disposed in the indoor air duct 120, and is used for cooling the air flowing out from the first exhaust port 114, that is, the cooling device 150 can further cool the indoor circulating air after heat exchange, so as to further reduce the temperature of the indoor circulating air. Through setting up the cold supplement device 150 for the evaporation cooling device 100 has realized combining natural cold source refrigeration and mechanical refrigeration, satisfies different refrigeration demands, has improved the refrigeration performance of evaporation cooling device 100. In addition, the arrangement of the cooling device 150 to cool the indoor circulating gas after heat exchange can also avoid the loss of the cooling capacity supplemented by the cooling device 150 in the heat exchange process, and further ensure the refrigeration effect of the evaporative cooling device 100. In some embodiments, the cold patch 150 is a compressor cold patch.

It will be appreciated that by turning the supplemental cooling device 150 on or off, two different modes of operation of the evaporative cooling device 100, specifically a natural cooling mode and a mechanical cooling mode, can be enabled.

In some embodiments, the cooling device 150 may be controlled to be turned on or off according to the temperature of the air in the outdoor air duct 130.

Specifically, when the temperature of the gas in the outdoor air duct 130 is lower than the set temperature, that is, the temperature of the outdoor circulating gas is lower, the natural cold source can provide sufficient cold, the evaporative cooling device 100 operates in the natural cooling mode, the cold supplement device 150 is turned off, and the natural cold source of the outdoor circulating gas is used for cooling the indoor circulating gas, so that the energy consumption of the evaporative cooling device 100 is reduced.

When the temperature of the gas in the outdoor air duct 130 is greater than or equal to the set temperature, that is, the temperature of the outdoor circulating gas is high, the natural cold source cannot provide enough cold, the evaporative cooling device 100 operates in the mechanical cooling mode, the cold supplement device 150 is started to supplement cold for the indoor circulating gas, and the refrigeration effect of the evaporative cooling device 100 is ensured.

In other embodiments, the cooling device 150 may be controlled to be turned on or off according to the temperature of the air in the indoor air duct 120.

Specifically, when the temperature of the air in the indoor air duct 120 is less than or equal to the set temperature, that is, the temperature of the indoor circulating air is low, it indicates that the natural energy can provide sufficient cooling capacity, the evaporative cooling device 100 operates in the natural cooling mode, and the cooling device 150 is turned off, thereby reducing the energy consumption of the evaporative cooling device 100.

When the temperature of the air in the indoor air duct 120 is higher than the set temperature, that is, the temperature of the indoor circulating air is higher, which indicates that the natural cold source cannot provide enough cold, the evaporative cooling device 100 operates in the mechanical cooling mode, and the cold supplement device 150 is turned on to supplement cold to the indoor circulating air, so as to ensure the cooling effect of the evaporative cooling device 100.

The filtering device 140 is disposed in the indoor air duct 120 and is used for filtering the air flowing into the first air inlet 113, so as to reduce the content of impurities in the indoor circulating air, prevent the impurities from blocking the heat exchanging device 110, and improve the reliability of the evaporative cooling device 100.

In some embodiments, the number of the filtering devices 140 may be multiple, which improves the filtering effect of the filtering devices 140 on the indoor circulating gas.

In some embodiments, when the number of the filtering devices 140 is multiple, the filtering device 140 may be further disposed in the outdoor air duct 130 for filtering the air flowing into the second air inlet 115, so as to prevent the heat exchanging device 110 from being blocked by impurities in the outdoor circulating air, and further improve the reliability of the evaporative cooling device 100.

As can be seen from the above, as shown in fig. 2, the indoor air duct 120 is set to be communicated with the first air inlet 113 and the first air outlet 114, and the outdoor air duct 130 is communicated with the second air inlet 115 and the second air outlet 116, so that the outdoor circulating gas can cool the indoor circulating gas through the heat exchanging device 110, thereby fully utilizing the natural cold source and reducing the energy consumption of the evaporative cooling device 100. Therefore, when the evaporative cooling device 100 is used in a data center room, energy consumption required for heat dissipation of the data center room can be reduced, and an energy efficiency index of the data center room (the energy efficiency index of the data center is total energy consumption/server energy consumption) is reduced.

Set up the gas that the first exhaust port 114 of supplementary cooling device 150 cooling flowed out, thereby when the nature cold source can not satisfy the refrigeration demand, through opening supplementary cooling device 150, can further cool down the cooling to indoor circulating gas, the combination of nature cold source refrigeration and mechanical refrigeration has been realized, the refrigeration performance of evaporative cooling device 100 has been improved, make evaporative cooling device 100 can have these two kinds of different operational modes of natural cooling mode and mechanical cooling mode, satisfy different refrigeration demands, improve evaporative cooling device 100's suitability. And the arrangement of the cooling device 150 for cooling the gas flowing out of the first exhaust port 114 can also avoid the loss of the cooling capacity supplemented to the cooling device 150 in the heat exchange process, thereby ensuring the refrigeration effect of the evaporative cooling device 100.

The first gas flow channel 111 and the second gas flow channel 112 are arranged to be separated from each other, so that gas in the second gas flow channel 112 is prevented from flowing into the first gas flow channel 111, pollution of outdoor circulating gas to indoor circulating gas is avoided, and the use reliability of the evaporative cooling device 100 is improved.

The filtering device 140 is arranged to filter the gas flowing into the first gas inlet 113, so that impurities in the indoor circulating gas can be reduced, the heat exchange device 110 is prevented from being blocked by the impurities in the indoor circulating gas, and the use reliability of the evaporative cooling device 100 is improved.

Alternatively, as shown in fig. 3, the cooling device 150 includes a compressor 151, a refrigerant circulation line 154, a condenser 155, and an evaporator 158. The compressor 151 includes a refrigerant inlet 152 and a refrigerant outlet 153. A refrigerant circulation line 154 communicates with the refrigerant inlet 152 and the refrigerant outlet 153. The condenser 155 is disposed in the outdoor air passage 130. The condenser 155 includes a condenser inlet 156 and a condenser outlet 157, the condenser inlet 156 being in communication with the refrigerant outlet 153. As shown in fig. 4, the evaporator 158 is disposed within the indoor air duct 120. One end of the evaporator 158 communicates with the condenser outlet 157, and the other end of the evaporator 158 communicates with the refrigerant inlet 152.

It is understood that, as shown by the arrow direction in fig. 3, the low-temperature and low-pressure gaseous refrigerant flowing out of the evaporator 158 can flow into the compressor 151 through the refrigerant circulation line 154 and the refrigerant inlet 152, be compressed into high-temperature and high-pressure gaseous refrigerant by the compressor 151, and then flow into the condenser 155 through the compressed refrigerant outlet 153 by the above-mentioned connection relationship. The condenser 155 cools and condenses the high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is condensed into a low-temperature and high-pressure gaseous refrigerant or a gas-liquid two-state refrigerant, and then enters the evaporator 158 again for throttling to absorb heat, so that the circulating refrigeration of the refrigerant is realized. In some embodiments, the refrigerant may be water or freon, etc., to meet different refrigeration needs.

Specifically, as shown in fig. 4, the condenser 155 is disposed in the outdoor air duct 130, so that the outdoor circulating gas can cool down the condenser 155, so that the condenser 155 can cool down the refrigerant.

In some embodiments, the condenser 155 may be disposed near the second exhaust port 116, and after heat exchange is performed between the outdoor circulating gas and the indoor circulating gas, the outdoor circulating gas flows into the outdoor air duct 130 through the second exhaust port 116, and then the temperature of the condenser 155 is reduced, so as to prevent the condenser 155 from increasing the temperature of the outdoor circulating gas and affecting the heat exchange effect between the outdoor circulating gas and the indoor circulating gas. In other embodiments, the condenser 155 may be disposed near the second air inlet 115, so that the outdoor circulating gas flows into the second gas flow channel 112 through the second air inlet 115 after cooling the condenser 155, and exchanges heat with the indoor circulating gas, thereby improving the cooling and condensing effects of the outdoor circulating gas on the condenser 155, and further improving the cooling effect of the cooling device 150.

The evaporator 158 is disposed in the indoor air duct 120, and as shown in fig. 4, the evaporator 158 is disposed near the first exhaust port 114, so that the air flowing out of the first exhaust port 114 can be cooled, and cooling supplement of the indoor circulating air are realized. In some embodiments, the number of the evaporators 158 may be multiple, so as to increase the contact area between the evaporators 158 and the indoor circulating gas, and improve the cooling effect of the cooling device 150 on the indoor circulating gas.

The condenser 155 is arranged in the outdoor air duct 130, and the evaporator 158 is arranged in the indoor air duct 120, so that the condenser 155 can be cooled by outdoor circulating gas, the evaporator 158 can supplement cold to the indoor circulating gas, and the refrigeration reliability of the evaporative cooling device 100 is improved. In addition, by the arrangement, the indoor air duct 120 and the outdoor air duct 130 can be shared by the mechanical cooling mode and the natural cooling mode, so that the size of the evaporative cooling device 100 is reduced, the lengths of the indoor air duct 120 and the outdoor air duct 130 are shortened, and the cost of the evaporative cooling device 100 is reduced.

As described above, the indoor circulation gas and the outdoor circulation gas can exchange heat by the heat exchanging device 110. Optionally, as shown in fig. 4, the indoor air duct 120 includes an indoor air inlet 121, an indoor air inlet duct 122, an indoor air outlet 123, and an indoor air outlet duct 124. One end of the indoor air intake duct 122 is communicated with the indoor air inlet 121, and the other end of the indoor air intake duct 122 is communicated with the first air inlet 113. One end of the indoor exhaust duct 124 communicates with the indoor exhaust port 123, and the other end of the indoor exhaust duct 124 communicates with the first exhaust port 114. The filter device 140 is disposed in the indoor intake air duct 122, and the evaporator 158 is disposed in the indoor exhaust air duct 124.

Specifically, as shown by the arrow direction in fig. 4, the indoor circulating gas enters the indoor air intake duct 122 through the indoor air intake opening 121. Because the indoor air inlet duct 122 is communicated with the first air inlet 113, the indoor circulating gas can enter the first gas flow channel 111 through the first air inlet 113 to exchange heat with the outdoor circulating gas. The first exhaust port 114 is communicated with the indoor exhaust air duct 124, so that the heat-exchanged indoor circulating gas can enter the indoor exhaust air duct 124 through the first exhaust port 114 and flow back to the indoor through the indoor exhaust port 123.

In some embodiments, the indoor air inlet 121 and the indoor air outlet 123 are respectively communicated with the data center room, so that the circulating air of the data center room can enter the evaporative cooling device 100 and return to the data center room after being cooled down.

By arranging the indoor air inlet duct 122 and the indoor air outlet duct 124, the indoor circulating gas can enter the first gas flow channel 111 through the indoor air inlet duct 122 and return to the indoor space through the indoor air outlet duct 124 after heat exchange, so that heat exchange between the indoor circulating gas and the outdoor circulating gas is realized, and the refrigeration reliability of the evaporative cooling device 100 is improved. In addition, the evaporator 158 is disposed in the indoor exhaust air duct 124, so that the air flowing out of the first exhaust port 114 can be cooled and cooled, and the loss of the cooling capacity supplemented by the evaporator 158 due to the heat exchange process can be avoided. The filtering device 140 is disposed in the indoor air intake duct 122, so that the indoor circulating gas flowing into the first air intake 113 can be filtered, the heat exchange device 110 is prevented from being blocked by impurities in the indoor circulating gas, and the use reliability of the evaporative cooling device 100 is improved.

As can be seen from the above, the evaporator 158 is disposed within the indoor exhaust duct 124. Optionally, as shown in fig. 4, the evaporative cooling device 100 further includes a first fan 162. The first fan 162 is disposed between the heat exchanging device 110 and the evaporator 158, and the first fan 162 is a variable frequency fan.

It can be understood that the first fan 162 is disposed between the heat exchanging device 110 and the evaporator 158, so as to drive the gas flowing out of the first exhaust port 114 to flow toward the evaporator 158, promote the indoor circulating gas to contact with the evaporator 158, and improve the cooling effect of the evaporator 158 on the indoor circulating gas. Moreover, the first fan 162 is a variable frequency fan, so that the flow rate of the air in the indoor air exhaust duct 124 can be controlled by adjusting the rotation speed of the first fan 162, the air exhaust amount of the indoor air outlet 123 can be controlled, and the applicability of the evaporative cooling device 100 is improved.

In some embodiments, the number of the first fans 162 may be plural.

Alternatively, as shown in fig. 5, the outdoor air duct 130 includes an outdoor air inlet 131, an outdoor air inlet duct 132, an outdoor air outlet 133 and an outdoor air outlet duct 134. One end of the outdoor air inlet duct 132 is connected to the outdoor air inlet 131, and the other end of the outdoor air inlet duct 132 is connected to the second air inlet 115. One end of the outdoor discharge air duct 134 communicates with the outdoor discharge opening 133, and the other end of the outdoor discharge air duct 134 communicates with the second discharge opening 116. The condenser 155 is disposed in the outdoor discharge air duct 134.

Specifically, as shown by the arrow direction in fig. 5, the outdoor circulating gas enters the outdoor inlet duct 132 through the outdoor inlet 131. Since the outdoor air inlet duct 132 is communicated with the second air inlet 115, the outdoor circulating gas can enter the second gas flow channel 112 through the second air inlet 115 to exchange heat with the indoor circulating gas. The second exhaust port 116 is communicated with the outdoor exhaust air duct 134, so that the heat-exchanged outdoor circulating gas can enter the outdoor exhaust air duct 134 through the second exhaust port 116 and flow out of the evaporative cooling device 100 through the outdoor exhaust port 133.

By arranging the outdoor air inlet duct 132 and the outdoor air outlet duct 134, the outdoor circulating gas can enter the second gas flow passage 112 through the outdoor air inlet duct 132, and is discharged out of the evaporative cooling device 100 through the outdoor air outlet duct 134 after heat exchange, so that heat exchange between the outdoor circulating gas and the indoor circulating gas is realized, and the refrigeration reliability of the evaporative cooling device 100 is improved. And, set up the condenser 155 in the air duct 134 of airing exhaust outdoors, thus the outdoor circulating gas is after exchanging heat with the indoor circulating gas, flow through the condenser 155 and cool down the condenser 155, avoided the heat of the condenser 155 to lead to the outdoor circulating gas temperature to rise, influence the heat exchange of outdoor circulating gas and indoor circulating gas, further guaranteed the heat exchange effect of outdoor circulating gas and indoor circulating gas, thus improve the utilization ratio to the natural cold source of the evaporative cooling device 100, reduce the energy consumption of the evaporative cooling device 100.

As can be seen from the above, the condenser 155 is disposed within the outdoor exhaust air duct 134. Optionally, as shown in fig. 5, the evaporative cooling device 100 further includes a second fan 164. The second fan 164 is disposed between the heat exchanging device 110 and the condenser 155, and the second fan 164 is a variable frequency fan.

It can be understood that the second fan 164 is disposed between the heat exchanging device 110 and the condenser 155, so as to drive the gas flowing out of the second gas outlet 116 to flow to the condenser 155, promote the outdoor circulating gas to contact with the condenser 155, improve the cooling effect of the outdoor circulating gas on the condenser 155, and thus improve the cooling effect of the cooling device 150. Moreover, the second fan 164 is a variable frequency fan, so that the flow velocity of the gas in the outdoor air exhaust duct 134 can be controlled by adjusting the rotation speed of the second fan 164, and the air exhaust amount of the outdoor air outlet 133 can be controlled, so that the evaporative cooling device 100 can meet the use requirements under different refrigeration conditions, and the applicability of the evaporative cooling device 100 is improved.

In some embodiments, the number of the second fans 164 may be plural.

Optionally, as shown in fig. 4, the evaporative cooling device 100 further includes a humidifying device 170. The humidifying device 170 is disposed in the outdoor intake air duct 132.

The humidifying device 170 is arranged in the outdoor air inlet duct 132, so that the gas in the outdoor air inlet duct 132 can be humidified, the outdoor circulating gas is cooled in a direct evaporative cooling mode, and the heat exchange effect of the outdoor circulating gas and the indoor circulating gas is improved. In addition, since the first gas flow passage 111 and the second gas flow passage 112 are separated from each other, the humidification device 170 is prevented from affecting the humidity of the indoor circulating gas, and the reliability of the evaporative cooling device 100 is further improved.

In some embodiments, the humidifying device 170 may be a wet film humidifier.

It can be understood that the evaporative cooling device 100 can have four different operation modes, i.e., a natural cooling mode, a humidification cooling mode, a hybrid cooling mode, and a mechanical cooling mode, by controlling the turning on or off of the humidification device 170 and the refrigeration device 150.

In some embodiments, the cooling device 150 and the humidifying device 170 may be controlled to be turned on or off according to the dry bulb temperature and the wet bulb temperature of the outdoor circulating gas.

Specifically, when the dry bulb temperature of the outdoor circulating gas is lower than the first set temperature, the natural cold source can provide enough cold, the cooling device 150 can be controlled to be turned off, the humidifying device 170 is controlled to be turned off, and the evaporative cooling device 100 operates in the natural cooling mode, so that the energy consumption of the evaporative cooling device 100 is reduced.

When the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is less than the second set temperature, the natural cold source cannot provide enough cold, the cooling device 150 can be controlled to be turned off, the humidifying device 170 is controlled to be turned on, the evaporative cooling device 100 runs in a humidifying cooling mode, the outdoor circulating gas is directly subjected to evaporative cooling through the humidifying device 170, the temperature of the outdoor circulating gas is reduced, and the cooling effect of the outdoor circulating gas on the indoor circulating gas is improved.

When the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is greater than or equal to the second set temperature, the natural cold source cannot provide enough cold, the cooling device 150 can be controlled to be turned on, the humidifying device 170 is controlled to be turned on, the evaporative cooling device 100 runs in a mixed cooling mode, the outdoor circulating gas is directly subjected to evaporative cooling through the humidifying device 170, the temperature of the outdoor circulating gas is reduced, the cooling effect of the outdoor circulating gas on the indoor circulating gas is improved, the indoor circulating gas after heat exchange is subjected to cooling through the cooling device 150, and the refrigerating performance of the evaporative cooling device 100 is ensured.

In addition, when the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is greater than or equal to the second set temperature, the natural cold source cannot provide enough cold energy, the refrigeration device 150 can be controlled to be turned on, the humidification device 170 is controlled to be turned off, the evaporative cooling device 100 operates in a mechanical cooling mode, the indoor circulating gas after heat exchange is subjected to cold supplementation and temperature reduction through the refrigeration device 150, and the refrigeration efficiency of the evaporative cooling device 100 is improved.

Alternatively, as shown in fig. 6, the humidifying device 170 includes a shower device 171, a sump 172, a connecting line 173, and a driving device 174. The spray device 171 is used to spray liquid. The liquid collecting tank 172 is connected to the outdoor air inlet duct 132 along the flowing direction of the liquid in the outdoor air inlet duct 132, and the liquid collecting tank 172 is used for containing the liquid sprayed by the spraying device 171. One end of the connection pipe 173 communicates with the sump 172, and the other end of the connection pipe 173 communicates with the shower device 171. The driving device 174 is in communication with the connecting line 173, and the driving device 174 is used to drive the flow of liquid in the connecting line 173.

It is to be understood that the liquid sprayed by the spraying device 171 is water, and in some embodiments, the spraying device 171 is a spray head. In some embodiments, the number of spray devices 171 is multiple.

In some embodiments, the spraying device 171 is disposed above the outdoor intake air duct 132, so that the liquid sprayed by the spraying device 171 can flow downwards along the outdoor intake air duct 132 under the action of gravity, thereby increasing the contact time of the sprayed liquid and the outdoor circulating gas and improving the direct evaporative cooling effect of the humidifying device 170 on the outdoor circulating gas.

The liquid collecting tank 172 is connected to the outdoor air inlet duct 132 along the flowing direction of the liquid in the outdoor air inlet duct 132, and it can be understood that the liquid in the outdoor air inlet duct 132 flows downward under the action of gravity, so that the liquid collecting tank 172 is disposed below the outdoor air inlet duct 132. The two ends of the connecting pipeline 173 are respectively communicated with the liquid collecting tank 172 and the spraying device 171, and the driving device 174 is communicated with the connecting pipeline 173, so that the liquid in the liquid collecting tank 172 can be driven to flow into the connecting pipeline 173, and the liquid in the connecting pipeline 173 is driven to flow into the spraying device 171, thereby realizing the cyclic utilization of the spraying liquid and reducing unnecessary resource waste.

In some embodiments, the driving device 174 is a liquid pump, and by adjusting the rotation speed of the liquid pump, the spraying flow rate of the spraying device 171 can be controlled, thereby further improving the flexibility of the humidifying device 170.

By arranging the spraying device 171, the liquid collecting tank 172 and the driving device 174, the recycling of the spraying liquid is realized, unnecessary resource waste is reduced, and the use performance of the evaporative cooling device 100 is improved.

As can be seen from the above, the evaporative cooling device 100 is capable of operating four different operating modes, namely, a natural cooling mode, a humidification cooling mode, a hybrid cooling mode, and a mechanical cooling mode. Optionally, the evaporative cooling device 100 further comprises a temperature detection device and a control device. The temperature detecting device is used for detecting the temperature of at least one of the indoor air duct 120 and the outdoor air duct 130. The control device is used for controlling the operation states of the cooling device 150 and the humidifying device 170 according to the temperature of at least one of the indoor air duct 120 and the outdoor air duct 130.

By arranging the temperature detection device, the gas temperature of at least one of the indoor air duct 120 and the outdoor air duct 130 can be obtained, so that the control device can control the operation or stop of the cold compensation device 150 and the humidification device 170 according to the gas temperature of at least one of the indoor air duct 120 and the outdoor air duct 130, different operation modes of the evaporative cooling device 100 are realized, and the automation performance of the evaporative cooling device 100 is improved.

In some embodiments, the temperature detection device can obtain a wet bulb temperature as well as a dry bulb temperature of the gas.

In some embodiments, the number of the temperature detection devices may be one, and one temperature detection device is used to detect the temperatures of the indoor air duct 120 and the outdoor air duct 130, so as to simplify the structure of the evaporative cooling device 100 and reduce the cost of the evaporative cooling device 100. In other embodiments, the number of the temperature detection devices may be multiple, and the temperature detection accuracy of the air inside the indoor air duct 120 and the outdoor air duct 130 is improved by detecting the temperature of the indoor air duct 120 and the temperature of the outdoor air duct 130 by the multiple temperature detection devices.

In another aspect, embodiments of the present invention provide a communication system including a housing and an evaporative cooling device 100 as described above. The shell is surrounded to form an accommodating space. The indoor air inlet 121 and the indoor air outlet 123 of the indoor air duct 120 are respectively communicated with the accommodating space.

The communication system provided by the embodiment of the present invention includes the above-mentioned evaporative cooling device 100, so that all the above-mentioned advantages are achieved, and are not described herein again.

In some embodiments, the communication system is a data center, and the accommodation space is a data center room. Indoor air inlet 121 and indoor air outlet 123 of indoor wind channel 120 are linked together with accommodation space for in the circulating air in the data center computer lab can enter into evaporative cooling device, carry out the heat transfer with the outside air, and the circulating air in the data center computer lab after the cooling can enter into the data center computer lab again, thereby reduces the temperature of data center computer lab, improves data center's performance.

In one particular embodiment, as shown in FIG. 1, an evaporative cooling device 100 is provided, the evaporative cooling device 100 being used in a data center room.

Specifically, the evaporative cooling device 100 includes a heat exchange device 110, and the heat exchange device 110 is a plate heat exchanger. The heat exchanger 110 has a first gas channel 111 and a second gas channel 112, and the first gas channel 111 and the second gas channel 112 are disposed at an interval. As shown in FIG. 2, the first gas flow path 111 includes a first gas inlet 113 and a first gas outlet 114, and the second gas flow path 112 includes a second gas inlet 115 and a second gas outlet 116. The indoor duct 120 communicates with the first air inlet 113 and the first air outlet 114, and the outdoor duct 130 communicates with the second air inlet 115 and the second air outlet 116.

It can be understood that the air in the indoor air duct 120 is the circulating air in the data center, and the air in the outdoor air duct 130 is the outside air, so that the circulating air in the data center can exchange heat with the outside air through the heat exchanging device 110, and the energy consumption of the evaporative cooling device 100 is reduced.

Specifically, as shown in fig. 3, the indoor air duct 120 includes an indoor air inlet 121 and an indoor air outlet 123, and it is understood that the indoor air inlet 121 and the indoor air outlet 123 are respectively communicated with the data center room.

Two ends of the indoor air inlet duct 122 are respectively communicated with the indoor air inlet 121 and the first air inlet 113, so that return air in the data center machine room can enter the indoor air inlet duct 122 through the indoor air inlet 121 and enter the first air flow channel 111 through the first air inlet 113. Two ends of the indoor air exhaust duct 124 are respectively communicated with the first air exhaust opening 114 and the indoor air exhaust opening 123, so that cooled and cooled internal circulation air of the data center can re-enter the data center machine room through the indoor air exhaust duct 124 and the indoor air exhaust opening 123, and the data center machine room is cooled.

As shown in fig. 5, both ends of the outdoor intake duct 132 are respectively communicated with the outdoor intake vent 131 and the second intake vent 115, so that the outside air can enter the second gas flow passage 112 through the outdoor intake vent 131 and the second intake vent 115 and exchange heat with the circulating air in the data center. Both ends of the outdoor discharge air duct 134 are respectively communicated with the outdoor discharge air outlet 133 and the second discharge air outlet 116, so that the heat-exchanged outdoor air can be discharged out of the evaporative cooling device 100 through the outdoor discharge air duct 134 and the outdoor discharge air outlet 133.

Through setting up indoor wind channel 120, outdoor wind channel 130 and heat transfer device 110 for outdoor air can cool off the room air through heat transfer device 110, has realized the make full use of to the nature cold source, reduces the evaporation cooling device 100 energy consumption. In addition, the first gas flow channel 111 and the second gas flow channel 112 are arranged at an interval, so that the gas in the second gas flow channel 112 is prevented from flowing into the first gas flow channel 111, that is, the pollution of the circulating air in the data center room by the outside air is avoided, and the use reliability of the evaporative cooling device 100 is improved.

In some embodiments, as shown in FIG. 3, the outdoor intake air duct 132 is disposed below the indoor intake air duct 122, and the indoor exhaust air duct 124 is disposed below the outdoor exhaust air duct 134.

As shown in fig. 5, the evaporative cooling device 100 further includes a supplementary cooling device 150, and specifically, the supplementary cooling device 150 includes an evaporator 158 and a condenser 155. The evaporator 158 is disposed in the indoor exhaust duct 124, so that the cooling of the naturally cooled circulating air in the data center can be performed. The condenser 155 is provided in the outdoor discharge air duct 134 so that heat of the condenser 155 can be taken away by outdoor air. As shown in fig. 3, the cooling-supplement device 150 further includes a compressor 151, and the compressor 151 drives a refrigerant to flow between the evaporator 158 and the condenser 155, so that the refrigerant in the evaporator 158 can absorb the temperature of the ambient air, thereby implementing cooling supplement of the air circulating in the data center room, implementing combination of a natural cooling source and mechanical cooling, and improving the cooling performance of the evaporative cooling device 100.

In addition, the condenser 155 is arranged in the outdoor air exhaust duct 134, so that the temperature of air outside the air chamber can be prevented from being increased due to the heat of the condenser 155, the heat exchange effect of outdoor air and circulating air in the data center can be prevented from being influenced, and the utilization rate of the evaporative cooling device 100 to a natural cold source is improved.

In addition, the condenser 155 is disposed in the outdoor exhaust air channel 134, and the evaporator 158 is disposed in the indoor intake air channel 122, so that the natural cold source and the mechanical refrigeration can share the indoor air channel 120 and the outdoor air channel 130, the volume of the evaporative cooling device 100 is reduced, the length of the air channel is shortened, and the cost of the evaporative cooling device 100 is reduced.

As shown in fig. 4, the evaporative cooling device 100 further includes a humidifying device 170, and the humidifying device 170 is disposed in the outdoor air inlet duct 132, so as to humidify the outside air, cool the outside air in a direct evaporative cooling manner, and improve the cooling effect of the outside air on the circulating air in the data center. In some embodiments, the humidifying device 170 is a wet film humidifier.

Specifically, as shown in fig. 6, the humidifying device 170 includes a shower device 171, a sump 172, a connecting line 173, and a driving device 174. The spray device 171 is a spray head, and the liquid sprayed by the spray device 171 is water. Specifically, the shower device 171 is disposed above the outdoor intake air duct 132. The liquid collecting tank 172 is disposed opposite to the spraying device 171, is disposed below the outdoor air inlet duct 132, and is used for containing liquid in the outdoor air inlet duct 132. The two ends of the connecting pipeline 173 are respectively communicated with the liquid collecting tank 172 and the spraying device 171, the driving device 174 is used for driving liquid in the connecting pipeline 173 to flow, so that the liquid in the liquid collecting tank 172 can enter the connecting pipeline 173, and the liquid in the connecting pipeline 173 can enter the spraying device 171, thereby realizing the recycling of water, reducing unnecessary resource waste and further improving the service performance of the evaporative cooling device 100.

As shown in fig. 5, the evaporative cooling device 100 further includes a first fan 162, and the first fan 162 is disposed between the heat exchanging device 110 and the evaporator 158, so that the data center internal circulation air after heat exchange can be driven to flow to the evaporator 158, the cooling supplement effect of the evaporator 158 on the data center internal circulation air is improved, and the cooling effect of the evaporative cooling device 100 is ensured. Specifically, the first fan 162 is a variable frequency fan, and the air discharge amount of the indoor air outlet 123 can be controlled by adjusting the rotation speed of the first fan 162, so that the applicability of the evaporative cooling device 100 is further improved.

The evaporative cooling device 100 further comprises a second fan 164, wherein the second fan 164 is arranged between the heat exchange device 110 and the condenser 155, so that the outside air after heat exchange can be driven to flow to the condenser 155, the cooling effect of the outdoor air on the condenser 155 is improved, and the cooling effect of the cooling device 150 on the circulating air in the data center is improved. Specifically, the second fan 164 is a variable frequency fan, and the air discharge amount of the outdoor air outlet 133 can be controlled by adjusting the rotation speed of the second fan 164, so that the applicability of the evaporative cooling device 100 is further improved.

As shown in fig. 1, the evaporative cooling device 100 further includes a filtering device 140, the filtering device 140 is disposed in the indoor air intake duct 122 and is used for filtering the air flowing into the first air intake 113, so as to reduce impurities in the circulating air in the data center, prevent the impurities from blocking the heat exchange device 110, and improve the reliability of the evaporative cooling device 100.

It can be understood that by controlling the on or off of the cooling device 150 and the humidifying device 170, the evaporative cooling device 100 can have four different operation modes, i.e., a natural cooling mode, a humidifying cooling mode, a combined cooling mode, and a mechanical cooling mode. Specifically, the evaporative cooling device 100 may be controlled to operate in different modes according to the outside air temperature and the temperature of the air circulating in the data center room.

Specifically, when the dry bulb temperature of the outdoor circulating gas is lower than the first set temperature, the natural cold source can provide enough cold, the cooling device 150 can be controlled to be turned off, the humidifying device 170 is controlled to be turned off, the first fan 162 and the second fan 164 are controlled to be turned on, and the evaporative cooling device 100 operates in the natural cooling mode, so that the energy consumption of the evaporative cooling device 100 is reduced.

When the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is less than the second set temperature, the natural cold source cannot provide enough cold, the cooling device 150 can be controlled to be turned off, the humidifying device 170 is controlled to be turned on, the first fan 162 and the second fan 164 are controlled to be turned on, the evaporative cooling device 100 operates in a humidifying and cooling mode, the outdoor circulating gas is directly subjected to evaporative cooling through the humidifying device 170, the temperature of the outdoor circulating gas is reduced, and the cooling effect of the outdoor circulating gas on the indoor circulating gas is improved.

When the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is greater than or equal to the second set temperature, the natural cold source cannot provide enough cold, the cooling device 150 can be controlled to be turned on, the humidifying device 170 is controlled to be turned on, the first fan 162 and the second fan 164 are controlled to be turned on, the evaporative cooling device 100 operates in a mixed cooling mode, the outdoor circulating gas is directly subjected to evaporative cooling through the humidifying device 170, the temperature of the outdoor circulating gas is reduced, the cooling effect of the outdoor circulating gas on the indoor circulating gas is improved, the indoor circulating gas after heat exchange is subjected to cooling through the cooling device 150, and the refrigerating performance of the evaporative cooling device 100 is ensured.

In addition, when the dry bulb temperature of the outdoor circulating gas is greater than or equal to the first set temperature and the wet bulb temperature of the outdoor circulating gas is greater than or equal to the second set temperature, the natural cold source cannot provide enough cold energy, the cooling device 150 can be controlled to be turned on, the humidifying device 170 is controlled to be turned off, the first fan 162 and the second fan 164 are controlled to be turned on, the evaporative cooling device 100 operates in a mechanical cooling mode, and the indoor circulating gas after heat exchange is cooled through the cooling device 150, so that the refrigerating performance of the evaporative cooling device 100 is ensured.

And when the temperature of the circulating air in the data center machine room is greater than or equal to the third set temperature, it indicates that the temperature in the data center machine room is high, the cooling device 150 can be controlled to be turned on, the humidifying device 170 is controlled to be turned off, the first fan 162 and the second fan 164 are controlled to be turned on, the evaporative cooling device 100 operates in a mechanical cooling mode, the indoor circulating air after heat exchange is cooled by cooling device 150, and the refrigeration efficiency of the evaporative cooling device 100 is improved.

By controlling the on/off of the cold compensation device 150 and the humidification device 170, the evaporative cooling device 100 can have different cooling modes, so that the natural cold source can be fully utilized, the energy consumption of the evaporative cooling device 100 is reduced, the energy consumption required by heat dissipation of a data center machine room is reduced, and the energy efficiency index of the data center is reduced. Meanwhile, the combination of mechanical refrigeration and natural cold source refrigeration is realized, so that the evaporative cooling device 100 can meet the refrigeration requirements under different conditions and environments, and the applicability of the evaporative cooling device 100 is improved.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. An evaporative cooling apparatus, comprising:

the heat exchange device is provided with a first gas flow channel and a second gas flow channel, the first gas flow channel and the second gas flow channel are mutually separated, the first gas flow channel comprises a first gas inlet and a first gas outlet, and the second gas flow channel comprises a second gas inlet and a second gas outlet;

an indoor air duct communicated with the first air inlet and the first exhaust port;

the outdoor air duct is communicated with the second air inlet and the second air outlet;

the filtering device is arranged in the indoor air channel and is used for filtering the gas flowing into the first air inlet;

and part of the cold compensating device is arranged in the indoor air channel and is used for cooling the gas flowing out of the first exhaust port.

2. An evaporative cooling device as set forth in claim 1, wherein the cold-patch device includes:

a compressor including a refrigerant inlet and a refrigerant outlet;

a refrigerant circulation line communicating with the refrigerant inlet and the refrigerant outlet;

the condenser is arranged in the outdoor air channel and comprises a condenser inlet and a condenser outlet, and the condenser inlet is communicated with the refrigerant outlet;

and the evaporator is arranged in the indoor air channel, one end of the evaporator is communicated with the outlet of the condenser, and the other end of the evaporator is communicated with the refrigerant inlet.

3. An evaporative cooling device as recited in claim 2, wherein the indoor air duct comprises:

an indoor air inlet;

one end of the indoor air inlet duct is communicated with the indoor air inlet, and the other end of the indoor air inlet duct is communicated with the first air inlet;

an indoor air outlet;

one end of the indoor air exhaust duct is communicated with the indoor air outlet, and the other end of the indoor air exhaust duct is communicated with the first air outlet;

the filtering device is arranged in the indoor air inlet duct, and the evaporator is arranged in the indoor air exhaust duct.

4. An evaporative cooling device as set forth in claim 3, further including:

the first fan is arranged between the heat exchange device and the evaporator and is a variable frequency fan.

5. An evaporative cooling device as recited in claim 2, wherein the outdoor air duct comprises:

an outdoor air inlet;

one end of the outdoor air inlet channel is communicated with the outdoor air inlet, and the other end of the outdoor air inlet channel is communicated with the second air inlet;

an outdoor air outlet;

one end of the outdoor air exhaust duct is communicated with the outdoor air outlet, and the other end of the outdoor air exhaust duct is communicated with the second air outlet;

the condenser is arranged in the outdoor exhaust air duct.

6. An evaporative cooling device as recited in claim 5, further comprising:

and the second fan is arranged between the heat exchange device and the condenser, and is a variable frequency fan.

7. An evaporative cooling device as recited in claim 5, further comprising:

and the humidifying device is arranged in the outdoor air inlet duct.

8. An evaporative cooling device as set forth in claim 7 wherein said humidification device includes:

the spraying device is used for spraying liquid;

the liquid collecting groove is connected with the outdoor air inlet duct along the flowing direction of liquid in the outdoor air inlet duct and is used for containing liquid sprayed by the spraying device;

one end of the connecting pipeline is communicated with the liquid collecting tank, and the other end of the connecting pipeline is communicated with the spraying device;

and the driving device is communicated with the connecting pipeline and is used for driving the liquid in the connecting pipeline to flow.

9. An evaporative cooling device as recited in claim 7, further comprising:

the temperature detection device is used for detecting the temperature of at least one of the indoor air duct and the outdoor air duct;

and the control device is used for controlling the running states of the cold compensating device and the humidifying device according to the temperature of at least one of the indoor air duct and the outdoor air duct.

10. A communication system, comprising:

the shell is surrounded to form an accommodating space;

the evaporative cooling device as claimed in any one of claims 1 to 9, wherein an indoor air inlet and an indoor air outlet of the indoor air duct are respectively communicated with the accommodating space.

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