CN220043983U - Fresh air device - Google Patents

Abstract

The utility model discloses a fresh air device, relates to the technical field of fresh air systems, and is used for solving the problem of high energy consumption of the existing fresh air device. The fresh air device comprises a shell, a heat exchange tube and a first fan. Wherein, the casing is inside to form the wind channel, has offered air intake, air outlet, first vent and the second vent with wind channel intercommunication. The air inlet is used for being communicated with the outside, the air outlet is used for being communicated with the distribution room, and the first ventilation opening and the second ventilation opening are both used for being communicated with the cold accumulation water pool. The heat exchange tube is arranged in the air duct. The heat exchange tube is positioned between the air inlet and the air outlet along the flowing direction of the air flow in the air duct. One end of the heat exchange tube is communicated with the first ventilation opening, and the other end is communicated with the second ventilation opening. The first fan is arranged at the first ventilation opening and used for driving cold air in the cold accumulation water tank to flow in the heat exchange tube. The fresh air device is used for conveying fresh air indoors.

Description

Fresh air device

Technical Field

The utility model relates to the technical field of fresh air systems, in particular to a fresh air device.

Background

A data center is a worldwide collaboration of specific equipment networks used to communicate, accelerate, expose, calculate, store data information over the internet infrastructure. Data centers are typically equipped with cold storage reservoirs and distribution rooms. The cold accumulation water pool can store surplus cold energy generated in the running process of the data center air conditioning system through water. When the data center needs to refrigerate, the cold accumulation pool can release the cold energy stored. A power supply and distribution system is installed in the power distribution room and is used for providing stable and reliable power support for all equipment with power requirements in the data center.

The precise components of the power supply and distribution system can generate a large amount of heat during operation, so that toxic and harmful gases can be generated on the precise components. Therefore, in order to improve the air quality in the distribution room, a fresh air device is generally arranged in the distribution room, and the fresh air device can introduce outdoor fresh air into the distribution room and discharge dirty air in the distribution room.

Because the accurate components and parts of power supply distribution system need just can normal operating under specific temperature and humidity environment, in prior art, the temperature and humidity of new trend is adjusted to the additional integration traditional air conditioning module that can adjust temperature and humidity on new trend device in general, just so can lead to the energy consumption of new trend device great.

Disclosure of Invention

The utility model provides a fresh air device which is used for solving the problem of larger energy consumption of the existing fresh air device.

The utility model provides a fresh air device which comprises a shell, a heat exchange tube and a first fan. Wherein, the casing is inside to form the wind channel, has offered air intake, air outlet, first vent and the second vent with wind channel intercommunication. The air inlet is used for being communicated with the outside, the air outlet is used for being communicated with the distribution room, and the first ventilation opening and the second ventilation opening are both used for being communicated with the cold accumulation water pool. The heat exchange tube is arranged in the air duct and is positioned between the air inlet and the air outlet. One end of the heat exchange tube is communicated with the first ventilation opening, and the other end is communicated with the second ventilation opening. The first fan is arranged at the first ventilation opening and used for driving cold air in the cold accumulation water tank to flow in the heat exchange tube.

According to the fresh air device provided by the utility model, external fresh air can flow into the air duct through the air inlet and then flow out into the room of the power distribution room through the air outlet. Because the two ends of the heat exchange tube are communicated with the first ventilation opening and the second ventilation opening, the cold air in the cold accumulation water tank can enter the heat exchange tube through the first ventilation opening under the drive of the first fan, and then flows back into the cold accumulation water tank from the second ventilation opening. In addition, because the heat exchange tube sets up between air intake and air outlet, external air can be with the heat exchange tube contact when flowing in the wind channel, and then can carry out the heat transfer with the cold air in the heat exchange tube, and the temperature and the humidity of new trend can be adjusted. Because the fresh air device reasonably utilizes the surplus cold energy in the cold accumulation water pool to realize the temperature and humidity adjustment of the fresh air, the traditional air conditioning system module is not required to be additionally integrated in the fresh air device to adjust the temperature and humidity of the fresh air, and thus the energy consumption of the fresh air device is effectively reduced.

Optionally, the air duct includes a main air duct, a first ventilation air duct, and a second ventilation air duct. The heat exchange tube is arranged in the main air duct, and the air inlet and the air outlet are communicated with the main air duct. One end of the first ventilation air channel is connected with one end of the heat exchange tube, and the other end of the first ventilation air channel is provided with a first ventilation opening. One end of the second ventilation air channel is connected with the other end of the heat exchange tube, and a second ventilation opening is formed at the other end of the second ventilation air channel. The first fan is arranged in the first ventilation air duct and is used for enabling cold air in the cold accumulation water tank to flow into the heat exchange tube through the first ventilation air duct and flow back into the cold accumulation water tank through the second ventilation air duct.

Optionally, the air duct further comprises a third air duct and a fourth air duct, one end of the third air duct is communicated with the main air duct, and a third air port is formed at the other end of the third air duct. The third air vent is used for communicating with the distribution room. One end of the fourth air passage is communicated with the main air passage, and a fourth air passage is formed at the other end of the fourth air passage. The fourth air port is used for communicating with the outside.

The fresh air device further comprises a fresh air exchanger, a second fan and a third fan, wherein the fresh air exchanger is arranged in the main air channel and is positioned on one side of the heat exchange tube, which is close to the air inlet. The fresh air exchanger is provided with a first opening, a second opening, a third opening and a fourth opening, wherein the first opening is communicated with one end, close to the main air channel, of the third air channel, the second opening is communicated with one end, close to the main air channel, of the fourth air channel, and the third opening and the fourth opening are both communicated with the main air channel. The third opening is positioned at one side of the fresh air exchanger, which is close to the air inlet, and the fourth opening is positioned at one side of the fresh air exchanger, which is far away from the air inlet. The second fan is arranged in the main air duct and is positioned on one side of the fresh air exchanger, which is close to the air inlet. The third fan is arranged in the third air passage.

Optionally, the fresh air device further comprises a first temperature and humidity sensor, a first air valve and a controller. The first temperature and humidity sensor is arranged at the air outlet and used for detecting the temperature and humidity of air at the air outlet. The first air valve is arranged in the first ventilation air duct and used for opening and closing the first ventilation air duct. The controller is electrically connected with the first temperature and humidity sensor, the first fan and the first air valve and is used for controlling the first fan and the first air valve according to the temperature and humidity of air detected by the first temperature and humidity sensor.

Optionally, the fresh air device further includes a second temperature and humidity sensor and a third temperature and humidity sensor. The second temperature and humidity sensor is arranged at the first ventilation opening and is electrically connected with the controller and used for detecting the temperature and humidity of air at the first ventilation opening. The third temperature and humidity sensor is arranged at the second air vent and is electrically connected with the controller and used for detecting the temperature and humidity of air at the second air vent.

Optionally, the fresh air device further comprises a fourth temperature and humidity sensor, a fifth temperature and humidity sensor, a second air valve and a controller. The fourth temperature and humidity sensor is arranged at the air inlet and used for detecting the temperature and humidity of the air at the air inlet 5. The fifth temperature and humidity sensor is arranged at the third air outlet and used for detecting the temperature and humidity of air at the third air outlet. The second air valve is arranged in the third air passage and is used for opening and closing the third air passage. The controller is electrically connected with the fourth temperature and humidity sensor, the fifth temperature and humidity sensor, the second air valve and the third fan and is used for controlling the temperature and humidity of the air conditioner according to the fourth temperature and humidity sensor and the third fan

And the temperature and the humidity of the air detected by the fifth temperature and humidity sensor control the second air valve and the third fan. 0 optionally, the fresh air device further comprises a sixth temperature and humidity sensor, wherein the sixth temperature and humidity sensor is arranged at the fourth air port and is electrically connected with the controller and used for detecting the temperature and humidity of air at the fourth air port. The controller is used for controlling the third fan according to the temperature and the humidity of the air detected by the fifth temperature and humidity sensor and the sixth temperature and humidity sensor.

Optionally, the fresh air device further comprises a third air valve, wherein the third air valve is arranged in the main air duct, and the third air valve is positioned at one side of the second fan, which is close to the air inlet, and is used for opening and closing the main air duct.

Optionally, the fresh air device further comprises a first filter screen, wherein the first filter screen is arranged at the air inlet and is used for filtering impurities in air passing through the air inlet.

Optionally, the fresh air device further comprises a second filter screen, and the second filter screen is arranged at the first ventilation opening and is used for filtering impurities in the air passing through the first ventilation opening.

0, the fresh air device further comprises a third filter screen which is arranged at the third air outlet,

for filtering impurities in the air passing through the third vent.

Optionally, the fresh air device further comprises a water receiving disc, wherein the water receiving disc is arranged in the main air duct and is positioned on one side of the heat exchange tube away from the air inlet and used for receiving condensed water generated on the heat exchange tube.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.

FIG. 1 is a side view of a fresh air device according to an embodiment of the present utility model;

FIG. 2 is a front view of a fresh air device according to an embodiment of the present utility model;

FIG. 3 is a second side view of a fresh air device according to an embodiment of the present utility model;

FIG. 4 is a top view of a fresh air device according to an embodiment of the present utility model;

fig. 5 is an operation logic diagram of a fresh air device provided by an embodiment of the present utility model.

Reference numerals:

100-a fresh air device; 1-a shell; 2-heat exchange tubes; 3-a first fan; 11-an air duct; 12-an air inlet; 13-an air outlet; 14-a first vent; 15-a second vent; 16-a first temperature and humidity sensor; 17-a first damper; 18-a second temperature and humidity sensor; 19-a third temperature and humidity sensor; 20-a third vent; 21-fourth air port; 22-a fresh air exchanger; 23-a second fan; 24-a third fan; 25-fourth temperature and humidity sensor; 26-a fifth temperature and humidity sensor; 27-a second damper; 28-a sixth temperature and humidity sensor; 29-a third damper; 30-a first filter screen; 31-a second screen; 32-a third filter screen; 33-a water pan; 111-a main air duct; 112-a first ventilation duct; 113-a second ventilation duct; 114-a third air passage; 115-fourth air duct; 221-a first opening; 222-a second opening; 223-a third opening; 224-fourth opening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, when describing a pipeline, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

With the increasing development of technology, more and more enterprises have established data centers. Data centers are typically equipped with cold water reservoirs and distribution rooms.

For the cold accumulation water tank, the air temperature in the cold accumulation water tank is lower because the cold accumulation water tank stores surplus cold energy generated in the operation process of the data center air conditioning system.

For the distribution room, because the accurate components and parts in the distribution room can produce poisonous and harmful gas when the operation, in order to be convenient for maintainer to enter into the distribution room and maintain its inside accurate components and parts, be equipped with fresh air device in the distribution room generally, keep indoor have good air environment through fresh air device.

Because the accurate components and parts in the distribution room need only to normally operate under specific temperature and humidity environment, the fresh air device has great significance to the regulation of the temperature and humidity of fresh air.

In order to adjust the temperature and humidity of fresh air, as shown in fig. 1, fig. 1 is one of side views of a fresh air device 100 provided by an embodiment of the present utility model, the embodiment of the present utility model provides a fresh air device 100, where the fresh air device 100 may be used for dissipating heat from a distribution room near a cold storage pool, and includes a casing 1, a heat exchange tube 2, and a first fan 3.

An air duct 11 is formed in the casing 1, and an air inlet 12 and an air outlet 13 which are communicated with the air duct 11 are formed in the casing 1. The air inlet 12 is used for communicating with the outside, and the air outlet 13 is used for communicating with the distribution room. Fresh air from the outside can flow into the air duct 11 through the air inlet 12 and then flow out into the room of the distribution room through the air outlet 13.

The heat exchange tube 2 is disposed in the air duct 11 and located between the air inlet 12 and the air outlet 13.

As shown in fig. 2, fig. 2 is a front view of a fresh air device 100 provided by the embodiment of the utility model, a first ventilation opening 14 and a second ventilation opening 15 are further formed in a casing 1, one end of a heat exchange tube 2 is communicated with the first ventilation opening 14, the other end is communicated with the second ventilation opening 15, and the first ventilation opening 14 and the second ventilation opening 15 are both used for being communicated with a cold accumulation pool. The first fan 3 is arranged at the first ventilation opening 14 and is used for driving cold air in the cold accumulation water tank to flow in the heat exchange tube 2.

Because the two ends of the heat exchange tube 2 are communicated with the first ventilation opening 14 and the second ventilation opening 15, the cold air in the cold accumulation water tank can enter the heat exchange tube 2 through the first ventilation opening 14 under the drive of the first fan 3, and then flows back into the cold accumulation water tank from the second ventilation opening 15. In addition, since the heat exchange tube 2 is disposed in the air duct 11 and between the air inlet 12 and the air outlet 13, the external air can contact with the heat exchange tube 2 when flowing in the air duct 11, and then can exchange heat with the cold air in the heat exchange tube 2, and the temperature and humidity of the fresh air can be adjusted.

Because the fresh air device 100 reasonably utilizes the surplus cold in the cold accumulation water pool to realize the temperature and humidity adjustment of the fresh air, the traditional air conditioning system module is not required to be additionally integrated in the fresh air device 100 to adjust the temperature and humidity of the fresh air, and thus the energy consumption of the fresh air device 100 is effectively reduced.

It should be noted that the cold accumulation water tank may be a non-pressure-bearing type underground cold accumulation water tank, and the non-pressure-bearing type underground cold accumulation water tank is communicated with the outside, and the air pressure in the non-pressure-bearing type underground cold accumulation water tank is the same as the air pressure in the outside, so that cold air in the cold accumulation water tank is conveniently introduced into the heat exchange tube 2.

In order to improve the temperature and humidity adjusting effect of the fresh air device 100 on fresh air, in some embodiments, the number of heat exchange tubes 2 is plural along the flow direction of the air flow in the air duct 11, and the plural heat exchange tubes 2 are disposed at intervals. Thus, when the fresh air in the air duct 11 flows in the air duct 11, the fresh air can sequentially flow through the heat exchange tubes 2 to exchange heat for a plurality of times, and the temperature and humidity adjusting effect of the fresh air device 100 on the fresh air is effectively improved.

In some embodiments, with continued reference to fig. 2, the air duct 11 may include a main air duct 111, a first ventilation air duct 112, and a second ventilation air duct 113. The heat exchange tube 2 is arranged in the main air duct 111, and the air inlet 12 and the air outlet 13 are communicated with the main air duct 111. One end of the first ventilation duct 112 is connected to one end of the heat exchange tube 2, and the other end is formed with a first ventilation opening 14. One end of the second ventilation duct 113 is connected to the other end of the heat exchange tube 2, and the other end is formed with a second ventilation port 15. The first fan 3 is disposed in the first ventilation duct 112, and is configured to enable cold air in the cold storage pool to flow into the heat exchange tube 2 through the first ventilation duct 112 and flow back into the cold storage pool through the second ventilation duct 113.

The external fresh air may flow in the main air duct 111 and contact the heat exchange tubes 2 in the main air duct 111. In addition, the first ventilation air duct 112 can provide an installation position for the installation of the first fan 3, and the first fan 3 installed in the first ventilation air duct 112 can conveniently introduce the cold air in the cold storage water tank into the heat exchange tube 2 through the first ventilation opening 14, so that the cold air in the heat exchange tube 2 exchanges heat with the fresh air flowing in the main air duct 111. The second ventilation duct 113 can facilitate the cold air in the heat exchange tube 2 to flow back into the cold accumulation water pool, so that the cold air in the heat exchange tube 2 is always in a circulating flow state, which is beneficial to improving the heat exchange effect between the cold air in the heat exchange tube 2 and the fresh air.

Through dividing the air duct 11 into a main air duct 111, a first ventilation air duct 112 and a second ventilation air duct 113, and arranging the heat exchange tube 2 at the intersection of the three air ducts 11, the heat exchange between the outside fresh air and the cold air in the cold accumulation pond can be easily realized, and the heat exchange effect between the cold air in the heat exchange tube 2 and the fresh air is better.

Because the outside air has different temperatures and humidities in different time periods, for example, the temperature and humidity of the outside air are lower in winter, the outside air can be directly introduced into the power distribution room at this time, and the first fan 3 does not need to be started. The temperature and humidity of the outside air in summer are high, the outside air needs to exchange heat with the cold air in the cold accumulation water tank in the process of being introduced into the distribution room, and at the moment, the first fan 3 needs to be turned on.

With continued reference to fig. 2, in order to implement the fresh air device 100 to control the on and off of the first fan 3 according to an actual outdoor environment, in some embodiments, the fresh air device 100 may further include a first temperature and humidity sensor 16, a first air valve 17, and a controller (not shown in the drawings). The first temperature and humidity sensor 16 is disposed at the air outlet 13, and is configured to detect the temperature and humidity of air at the air outlet 13. The first damper 17 is disposed in the first ventilation duct 112 for opening and closing the first ventilation duct 112. The controller is electrically connected with the first temperature and humidity sensor 16, the first fan 3 and the first air valve 17, and is used for controlling the first fan 3 and the first air valve 17 according to the temperature and humidity of the air detected by the first temperature and humidity sensor 16.

When fresh air device 100 delivers fresh air into the power distribution room, first temperature and humidity sensor 16 detects the temperature and humidity of air at air outlet 13, and when the temperature and humidity of air detected by first temperature and humidity sensor 16 is lower, it indicates that external air can be directly delivered into the power distribution room at this time without exchanging heat with heat exchange tube 2. When the temperature and humidity of the air detected by the first temperature and humidity sensor 16 are higher, it indicates that the outside air cannot be directly conveyed into the power distribution room, but only after heat exchange with the heat exchange tube 2 is needed.

Therefore, when the temperature and humidity of the air detected by the first temperature and humidity sensor 16 is low, the first temperature and humidity sensor 16 transmits the detected value to the controller, and the controller can control the first air valve 17 and the first fan 3, and at this time, the first ventilation duct 112 is closed by the first air valve 17, and the first fan 3 stops operating. When the temperature value and the humidity value of the air detected by the first temperature and humidity sensor 16 are higher, the first temperature and humidity sensor 16 transmits the detected value to the controller, the controller can control the first air valve 17 and the first fan 3, at this time, the first ventilation air duct 112 is opened by the first air valve 17, the first fan 3 starts to operate, and the first fan 3 drives the air in the cold storage water tank to enter the heat exchange tube 2 to exchange heat with the fresh air in the main air duct 111.

Through setting up first temperature and humidity sensor 16 and controller in fresh air device 100, can make first blast gate 17 and first fan 3 can select to open and close according to external air environment, and then make fresh air device 100 more intelligent, the energy consumption is lower.

To monitor the heat exchange efficiency between the cold air in the cold storage water tank and the outdoor fresh air in real time, with continued reference to fig. 2, in some embodiments, the fresh air device 100 may further include a second temperature and humidity sensor 18 and a third temperature and humidity sensor 19. A second temperature and humidity sensor 18 is disposed at the first ventilation opening 14 and is electrically connected to a controller (not shown) for detecting the temperature and humidity of the air at the first ventilation opening 14. The third temperature and humidity sensor 19 is disposed at the second air vent 15 and electrically connected to the controller, and is used for detecting the temperature and humidity of the air at the second air vent 15.

The second temperature and humidity sensor 18 can detect the temperature and humidity of the air at the first ventilation opening 14 in real time, the third temperature and humidity sensor 19 can detect the temperature and humidity of the air at the second ventilation opening 15 in real time, and the second temperature and humidity sensor 18 and the third temperature and humidity sensor 19 transmit detected values to the controller. The controller may calculate a temperature difference and a humidity difference of the air at the first and second ventilation openings 14 and 15, thereby judging heat exchange efficiency between the cool air in the cool storage water tank and the outdoor fresh air.

Specifically, when the difference in temperature and humidity of the air at the first ventilation opening 14 and the second ventilation opening 15 is large, it indicates that the heat exchange efficiency between the cool air in the cool storage pool and the outdoor fresh air is low. At this time, the controller can control the first fan 3 to increase the rotation speed to increase the cold air amount of the cold storage water tank entering the heat exchange tube 2, thereby improving the heat exchange efficiency between the cold air in the cold storage water tank and the outdoor fresh air.

When the difference in temperature and humidity of the air at the first and second ventilation openings 14 and 15 is small, it indicates that the heat exchange efficiency between the cool air in the cool storage pool and the outdoor fresh air is high. At this time, the controller may control the first fan 3 to reduce the rotation speed to reduce the amount of cold air entering the cold storage water tank in the heat exchange tube 2, thereby reducing the power consumption of the first fan 3.

In sum, through setting up second temperature and humidity sensor 18 and third temperature and humidity sensor 19 respectively at first vent 14 and second vent 15, both can guarantee to have higher heat exchange efficiency between cold air in the cold-storage pond and the outdoor new trend, can also reduce the energy consumption of first fan 3 for this new trend device 100's intelligent degree is higher, and more energy-conserving.

In order to further improve the heat exchange effect of the fresh air, as shown in fig. 3, fig. 3 is a second side view of the fresh air device 100 according to the embodiment of the present utility model, in some embodiments, the air duct 11 may further include a third air duct 114 and a fourth air duct 115. Wherein one end of the third air passage 114 communicates with the main air passage 111, and the other end is formed with a third air passage 20. One end of the fourth air duct 115 communicates with the main duct 111, and the other end is formed with a fourth air duct 21. The third air port 20 is used for communicating with the distribution room, and the fourth air port 21 is used for communicating with the outside.

The fresh air device 100 may further include a fresh air exchanger 22, where the fresh air exchanger 22 is disposed in the main air duct 111 and located on a side of the heat exchange tube 2 near the air inlet 12. The fresh air exchanger 22 has a first opening 221, a second opening 222, a third opening 223, and a fourth opening 224, the first opening 221 communicates with an end of the third air duct 114 near the main duct 111, the second opening 222 communicates with an end of the fourth air duct 115 near the main duct 111, and the third opening 223 and the fourth opening 224 both communicate with the main duct 111. The third opening 223 is located on a side of the fresh air exchanger 22 near the air intake 12, and the fourth opening 224 is located on a side of the fresh air exchanger 22 away from the air intake 12.

By providing the fresh air exchanger 22 in the main duct 111, since the first opening 221 and the second opening 222 communicating with the third air duct 114 and the fourth air duct 115 are provided in the fresh air exchanger 22, air in the distribution room can flow into the fresh air exchanger 22 through the third air duct 20 and the first opening 221, and flow out from the second opening 222 and the fourth air duct 21 to the outside. Since the fresh air exchanger 22 is further provided with the third opening 223 and the fourth opening 224 which are communicated with the main air duct 111, the fresh air flow in the main air duct 111 can flow in the fresh air exchanger 22 through the third opening 223 and the fourth opening 224.

When the outside air temperature is higher, and the temperature of the air in the distribution room is lower, the heat exchange can be carried out between the fresh air entering the fresh air exchanger 22 and the air in the distribution room entering the fresh air exchanger 22, namely, before the outside fresh air exchanges heat with the air in the cold storage water tank, the fresh air exchanger 22 can effectively utilize the cold quantity of the return air in the distribution room to pre-cool the fresh air flow, so that the loss of the cold quantity in the cold storage water tank is reduced.

As shown in fig. 1, when the temperature of the external air is 30 ℃, the humidity is 80% rh, the temperature of the air in the cold-storage water tank is 4 ℃, the humidity is 95% rh, the temperature of the air in the power distribution room is 20 ℃, and the humidity is 90% rh, the fresh air device 100 is started and operated, and then the external fresh air passes through the fresh air exchanger 22 to exchange heat with the power distribution room return air in the fresh air exchanger 22. After the fresh air was precooled in the fresh air exchanger 22, the temperature of the fresh air became 25 ℃ and the humidity became 85% rh. The pre-cooled fresh air passes through the heat exchange tube 2, and the surface temperature of the heat exchange tube 2 is lower due to the cold storage water pool cold air in the heat exchange tube 2, the temperature and the humidity are further reduced after the fresh air contacts with the surface of the heat exchange tube 2, the temperature is changed to 18 ℃, the humidity is changed to 65% RH, and the fresh air after heat exchange with the heat exchange tube 2 finally flows into a power distribution room.

To increase the fresh air volume entering the distribution room, referring to fig. 3, in some embodiments, the fresh air device 100 may further include a second fan 23, where the second fan 23 is disposed in the main air duct 111 and located on a side of the fresh air exchanger 22 near the air inlet 12.

The second fan 23 can provide power, so that external fresh air can enter the main air duct 111 through the air inlet 12, and then fresh air entering the main air duct 111 flows into the power distribution room through the third opening 223, the fourth opening 224 and the air outlet 13 of the main air duct 111 on the fresh air exchanger 22 in sequence. The capacity of the fresh air device 100 for conveying fresh air is effectively improved under the driving of the second fan 23, and good air environment in the power distribution room is further ensured.

To enhance the pre-cooling effect of the fresh air exchanger 22 on the fresh air, with continued reference to FIG. 3, in some embodiments, the fresh air device 100 may further include a third fan 24, where the third fan 24 is disposed within the third air duct 114.

The third fan 24 can provide power, so that air in the distribution room can enter the third air passage 114 through the third air port 20, and then the air in the distribution room entering the third air passage 114 flows out to the outside through the first opening 221, the second opening 222 and the fourth air port 21 of the fresh air exchanger 22 in sequence. Under the drive of the third fan 24, the air flow of the distribution room always flows in the fresh air exchanger 22, and the heat exchange efficiency between the fresh air in the fresh air exchanger 22 and the air flow of the distribution room is higher, so that the pre-cooling effect of the fresh air exchanger 22 on the fresh air is better.

When the temperature and humidity of the outdoor fresh air are higher than those of the air in the distribution room, the air in the distribution room enters the fresh air exchanger 22 to pre-cool the fresh air. When the temperature and humidity of the outdoor fresh air are lower than those of the air in the distribution room, the air in the distribution room enters the fresh air exchanger 22 and cannot precool the fresh air.

To enable the air in the distribution room to choose whether to exchange heat with the outdoor fresh air according to the temperature and humidity of the outdoor fresh air, with continued reference to fig. 3, in some embodiments, the fresh air device 100 may further include a fourth temperature and humidity sensor 25, a fifth temperature and humidity sensor 26, and a second damper 27. The fourth temperature and humidity sensor 25 is disposed at the air inlet 12 and is used for detecting the temperature and humidity of the air at the air inlet 12. The fifth temperature and humidity sensor 26 is disposed at the third air outlet 20, and is used for detecting the temperature and humidity of the air at the third air outlet 20. The second air valve 27 is disposed in the third air passage 114 for opening and closing the third air passage 114. The controller (not shown in the figure) is further electrically connected to the fourth temperature and humidity sensor 25, the fifth temperature and humidity sensor 26, the second air valve 27 and the third air blower 24, and is configured to control the second air valve 27 and the third air blower 24 according to the temperature and humidity of the air detected by the fourth temperature and humidity sensor 25 and the fifth temperature and humidity sensor 26.

When the temperature and humidity of the air detected by the fourth temperature and humidity sensor 25 is higher than the temperature and humidity of the air detected by the fifth temperature and humidity sensor 26, the controller may control the second air valve 27 and the third air blower 24 to be turned on. At this time, the second air valve 27 opens the third air duct 114, the third fan 24 starts to operate, the third fan 24 drives the air in the distribution room to flow into the third air duct 114 through the third air port 20, flow into the fresh air exchanger 22 through the first opening 221, then flow into the fourth air duct 115 through the second opening 222, and finally flow out from the fourth air port 21. Because the temperature and humidity of the indoor air of distribution are lower than those of the outdoor fresh air, the outdoor fresh air can exchange heat with the indoor air in the fresh air exchanger 22 when flowing through the fresh air exchanger 22, namely, the outdoor fresh air can be precooled by the fresh air exchanger 22 before flowing through the heat exchange tube 2, so that the heat exchange effect of the fresh air device 100 on the outdoor fresh air is effectively improved, and the loss of the cold quantity in the cold accumulation water pool is reduced.

When the temperature and humidity of the air detected by the fourth temperature and humidity sensor 25 are lower than those of the air detected by the fifth temperature and humidity sensor 26, the temperature and humidity of the outdoor fresh air cannot be reduced even if the air in the power distribution room exchanges heat with the outdoor fresh air, and at this time, the controller can control the second air valve 27 and the third air blower 24 to be closed, the second air valve 27 closes the third air duct 114, and the third air blower 24 is not operated, so that the energy consumption of the fresh air device 100 is reduced.

By providing the fourth temperature and humidity sensor 25 and the fifth temperature and humidity sensor 26 in the fresh air device 100, the controller can open and close the second air valve 27 and the third air blower 24 according to the actual temperature and humidity of the outdoor fresh air and the temperature and humidity of the distribution indoor air. Therefore, the fresh air device 100 is more intelligent, and the fresh air device 100 has better cooling and dehumidifying effects on outdoor fresh air and simultaneously has lower energy consumption of the fresh air device 100.

To monitor the heat exchange efficiency between the air in the power distribution room and the outdoor fresh air in real time, referring to fig. 3, in some embodiments, the fresh air device 100 may further include a sixth temperature and humidity sensor 28, where the sixth temperature and humidity sensor 28 is disposed at the fourth air port 21 and is electrically connected to a controller (not shown in the figure) for detecting the temperature and humidity of the air at the fourth air port 21.

The controller is further configured to control the third fan 24 according to the temperature and humidity of the air detected by the fifth temperature and humidity sensor 26 and the sixth temperature and humidity sensor 28.

The fifth temperature and humidity sensor 26 can detect the temperature and humidity of the air at the third air port 20 in real time, and the sixth temperature and humidity sensor 28 can detect the temperature and humidity of the air at the fourth air port 21 in real time. The fifth 26 and sixth 28 temperature and humidity sensors transmit the detected values to the controller, which calculates the temperature difference and humidity difference at the third 20 and fourth 21 vents. The controller can judge the heat exchange efficiency between the air in the power distribution room and the outdoor fresh air according to the temperature difference and the humidity difference of the third air outlet 20 and the fourth air outlet 21.

Specifically, when the temperature difference and the humidity difference at the third air port 20 and the fourth air port 21 are larger, it is indicated that the heat exchange efficiency between the air in the power distribution room and the outdoor fresh air is lower. At this time, the controller may control the third fan 24 to increase the rotational speed to increase the amount of cool air entering the distribution room in the fresh air exchanger 22, thereby improving the heat exchange efficiency between the air in the distribution room and the outdoor fresh air.

When the temperature difference and the humidity difference at the third air port 20 and the fourth air port 21 are smaller, the heat exchange efficiency between the air in the distribution room and the outdoor fresh air is higher. At this time, the controller may control the third fan 24 to reduce the rotational speed to reduce the amount of cool air entering the distribution room in the fresh air exchanger 22, thereby reducing the energy consumption of the third fan 24.

In sum, through setting up fifth temperature and humidity sensor 26 and sixth temperature and humidity sensor 28 respectively at third ventilation opening 20 and fourth ventilation opening 21, both can guarantee to have higher heat exchange efficiency between the indoor air of distribution and the outdoor new trend, can also reduce the energy consumption of third fan 24 for this new trend device 100's intelligent degree is higher, and more energy-conserving.

To intelligently control the fresh air delivery of the fresh air device 100, in some embodiments, the fresh air device 100 may also include an oxygen sensor for detecting the oxygen concentration within the power distribution room. The controller is also electrically connected to an oxygen sensor and a second fan 23.

When the oxygen concentration in the power distribution room is lower, the controller can control the second fan 23 to operate at a higher rotating speed, so that the fresh air conveying amount in the power distribution room can be improved. When the oxygen concentration in the distribution room is high, the controller can control the second fan 23 to operate at a low rotation speed, so that the energy consumption of the fresh air device 100 can be reduced. Therefore, by setting the oxygen sensor, the controller can control the rotating speed of the second fan 23 according to the concentration of oxygen in the power distribution room, so that the power distribution room can be ensured to always have sufficient oxygen, and the energy consumption of the fresh air device 100 can be reduced, so that the fresh air device 100 is more intelligent.

In order to prevent external impurities from entering the fresh air device 100 in the non-operating state of the fresh air device 100, with continued reference to fig. 3, in some embodiments, the fresh air device 100 may further include a third air valve 29, where the third air valve 29 is disposed in the main air duct 111 and is located on a side of the second fan 23 near the air inlet 12, for opening and closing the main air duct 111.

When the fresh air device 100 does not operate, the main air duct 111 can be closed through the third air valve 29, so that external impurities are prevented from entering the main air duct 111 and damaging the parts such as the second fan 23.

In order to prevent external impurities from entering the air duct 11 in the operating state of the fresh air device 100, referring to fig. 3, in some embodiments, the fresh air device 100 may further include a first filter 30, where the first filter 30 is disposed at the air inlet 12, and is used for filtering impurities in the air passing through the air inlet 12. By providing the first filter screen 30, the external impurities can be isolated outside the air inlet 12, so that the risk of damage to the components inside the fresh air device 100 caused by the external impurities entering the air duct 11 is greatly reduced.

In some embodiments, as shown in fig. 4, fig. 4 is a top view of a fresh air device 100 according to an embodiment of the present utility model, the fresh air device 100 may further include a second filter screen 31, where the second filter screen 31 is disposed at the first ventilation opening 14, for filtering impurities in air passing through the first ventilation opening 14. By providing the second filter screen 31, the external impurities can be isolated outside the first ventilation opening 14, so that the risk of damage to the components inside the fresh air device 100 caused by the external impurities entering the air duct 11 is greatly reduced.

In some embodiments, with continued reference to fig. 4, the fresh air device 100 can further include a third filter screen 32, the third filter screen 32 being disposed at the third vent 20 for filtering impurities in the air passing through the third vent 20. By providing the third filter screen 32, external impurities can be isolated outside the third air outlet 20, so that the risk of damage to components inside the fresh air device 100 caused by external impurities entering the air duct 11 is greatly reduced.

In order to reduce the risk of the condensed water generated by the fresh air device 100 directly dripping onto the circuit in the fresh air device 100, referring to fig. 1, in some embodiments, the fresh air device 100 may further include a water tray 33, where the water tray 33 is disposed in the main air duct 111 and is located on a side of the heat exchange tube 2 away from the air inlet 12, for receiving the condensed water generated on the heat exchange tube 2.

By arranging the water receiving disc 33 below the heat exchange tube 2, the condensed water generated on the heat exchange tube 2 can be collected by the water receiving disc 33 during dripping, so that the risk that the condensed water directly drops onto a circuit in the fresh air device 100 is greatly reduced.

In some embodiments, the operation logic of the fresh air device 100 is as follows, as shown in fig. 5, fig. 5 is a schematic diagram of the operation logic of the fresh air device 100 provided in the embodiment of the present utility model, the fresh air device 100 is started to operate, the third air valve 29 is first opened, and the second fan 23 rotates at the lowest rotation speed. At this time, the oxygen sensor detects the oxygen concentration in the power distribution room, and when the oxygen concentration in the power distribution room is lower than a preset value, the controller controls the second fan 23 to increase the rotation speed. When the oxygen concentration in the distribution room is higher than the preset value, the controller controls the second fan 23 to continue to operate at the lowest rotation speed.

Then, the fourth temperature and humidity sensor 25 detects the temperature value of the air at the air inlet 12, and when the temperature of the air at the air inlet 12 is higher than the preset value, the second air valve 27 opens the third air passage 114, and the third fan 24 operates. When the temperature of the air at the air inlet 12 is lower than the preset value, the second air valve 27 closes the third air passage 114, and the third fan 24 does not operate.

Then, the first temperature and humidity sensor 16 detects the temperature and humidity of the air at the air outlet 13, and when the temperature and humidity of the air at the air outlet 13 is higher than the preset value, the first air valve 17 opens the first ventilation duct 112, and the first fan 3 operates. When the temperature and humidity values of the air at the air outlet 13 are lower than the preset values, the first air valve 17 closes the first ventilation duct 112, and the first fan 3 does not operate.

The fresh air device 100 is repeatedly executed according to the logic, so that the operation of the fresh air device 100 is more intelligent, the fresh air device 100 can be guaranteed to have a good cooling and dehumidifying effect on fresh air, and the energy consumption of the fresh air device 100 can be reduced.

The present utility model is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present utility model should be covered by the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. A fresh air device for dispel the heat to the nearby block terminal room in cold-storage pond, its characterized in that, fresh air device includes:

an air channel is formed in the shell, and an air inlet, an air outlet, a first ventilation opening and a second ventilation opening which are communicated with the air channel are formed in the shell; the air inlet is used for being communicated with the outside, and the air outlet is used for being communicated with the distribution room; the first ventilation opening and the second ventilation opening are both used for communicating with the cold accumulation water tank;

the heat exchange tube is arranged in the air duct and is positioned between the air inlet and the air outlet; one end of the heat exchange tube is communicated with the first ventilation opening, and the other end of the heat exchange tube is communicated with the second ventilation opening; the method comprises the steps of,

the first fan is arranged at the first ventilation opening and used for driving cold air in the cold accumulation water tank to flow in the heat exchange tube.

2. The fresh air device of claim 1, wherein the duct comprises:

the heat exchange tube is arranged in the main air duct; the air inlet and the air outlet are communicated with the main air duct;

one end of the first ventilation air channel is connected with one end of the heat exchange tube, and the other end of the first ventilation air channel is provided with the first ventilation opening; the method comprises the steps of,

one end of the second ventilation air channel is connected with the other end of the heat exchange tube, and the other end of the second ventilation air channel is provided with the second ventilation opening;

the first fan is arranged in the first ventilation air duct and is used for enabling cold air in the cold storage water tank to flow into the heat exchange tube through the first ventilation air duct and flow back into the cold storage water tank through the second ventilation air duct.

3. The fresh air device of claim 2, wherein the duct further comprises:

one end of the third air passage is communicated with the main air passage, and a third air passage is formed at the other end of the third air passage; the third air outlet is used for communicating with the distribution room;

one end of the fourth air passage is communicated with the main air passage, and a fourth air opening is formed at the other end of the fourth air passage; the fourth air port is used for communicating with the outside;

the fresh air device also comprises:

the fresh air exchanger is arranged in the main air duct and is positioned at one side of the heat exchange tube, which is close to the air inlet; the fresh air exchanger is provided with a first opening, a second opening, a third opening and a fourth opening, the first opening is communicated with one end, close to the main air duct, of the third air duct, the second opening is communicated with one end, close to the main air duct, of the fourth air duct, and the third opening and the fourth opening are communicated with the main air duct; the third opening is positioned at one side of the fresh air exchanger, which is close to the air inlet, and the fourth opening is positioned at one side of the fresh air exchanger, which is far away from the air inlet;

the second fan is arranged in the main air duct and is positioned at one side of the fresh air exchanger, which is close to the air inlet;

the third fan is arranged in the third air passage.

4. The fresh air device of claim 2, further comprising:

the first temperature and humidity sensor is arranged at the air outlet and used for detecting the temperature and humidity of air at the air outlet;

the first air valve is arranged in the first ventilation air duct and used for opening and closing the first ventilation air duct; the method comprises the steps of,

and the controller is electrically connected with the first temperature and humidity sensor, the first fan and the first air valve and is used for controlling the first fan and the first air valve according to the temperature and humidity of air detected by the first temperature and humidity sensor.

5. The fresh air device of claim 4, further comprising:

the second temperature and humidity sensor is arranged at the first ventilation opening and is electrically connected with the controller and used for detecting the temperature and humidity of air at the first ventilation opening;

and the third temperature and humidity sensor is arranged at the second air vent and is electrically connected with the controller and used for detecting the temperature and humidity of air at the second air vent.

6. The fresh air device of claim 3, further comprising:

the fourth temperature and humidity sensor is arranged at the air inlet and used for detecting the temperature and humidity of air at the air inlet;

the fifth temperature and humidity sensor is arranged at the third air outlet and used for detecting the temperature and humidity of air at the third air outlet;

the second air valve is arranged in the third air passage and used for opening and closing the third air passage;

and the controller is electrically connected with the fourth temperature and humidity sensor, the fifth temperature and humidity sensor, the second air valve and the third fan and is used for controlling the second air valve and the third fan according to the temperature and humidity of air detected by the fourth temperature and humidity sensor and the fifth temperature and humidity sensor.

7. The fresh air device of claim 6, further comprising:

the sixth temperature and humidity sensor is arranged at the fourth air port and is electrically connected with the controller and used for detecting the temperature and humidity of air at the fourth air port;

the controller is used for controlling the third fan according to the temperature and the humidity of the air detected by the fifth temperature and humidity sensor and the sixth temperature and humidity sensor.

8. The fresh air device of claim 3, further comprising:

and the third air valve is arranged in the main air duct and is positioned at one side of the second fan close to the air inlet and used for opening and closing the main air duct.

9. The fresh air device of claim 3, further comprising:

the first filter screen is arranged at the air inlet and is used for filtering impurities in the air passing through the air inlet; and/or the number of the groups of groups,

the second filter screen is arranged at the first ventilation opening and is used for filtering impurities in the air passing through the first ventilation opening; and/or the number of the groups of groups,

the third filter screen is arranged at the third air outlet and is used for filtering impurities in the air passing through the third air outlet.

10. The fresh air device of claim 2, further comprising:

the water pan is arranged in the main air duct and is positioned at one side of the heat exchange tube away from the air inlet and used for receiving condensed water generated on the heat exchange tube.