CN220379868U - Indirect evaporative cooling apparatus - Google Patents

Abstract

An indirect evaporative cooling apparatus is disclosed. The indirect evaporative cooling device comprises a heat exchanger, two air inlet channels and two air outlet channels; the two air inlet channels and the two air outlet channels are communicated with the heat exchanger; at least one air outlet channel is internally provided with an air valve and a heat exchanger, the air valve is arranged at one side of the air outlet channel, and the heat exchanger is arranged at the other side of the air outlet channel. According to the air outlet device, the air valves and the heat exchangers are oppositely arranged on the two sides of the air outlet channel, the structure of the device is simplified, and when the heat exchangers do not operate, air in the device can flow out from the air valves, so that the pressure drop of the air flowing is reduced, and the energy consumption of the device is reduced.

Description

Indirect evaporative cooling apparatus

Technical Field

The utility model relates to the field of air conditioning systems, in particular to indirect evaporative cooling equipment.

Background

With the increase of technology, the integration level of the existing data center is higher and higher, and the heat productivity of the existing data center is higher and higher. Indirect evaporative cooling devices are increasingly being used in data centers because they can be operated efficiently using natural cooling most of the year.

For some areas, limited by indirect evaporative cooling capacity, indirect evaporative cooling devices require a compressor auxiliary cooling system to supplement the cooling capacity during the summer months. Conventionally, the evaporator is located downstream of the indoor air side heat exchange core and the condenser is located downstream of the outdoor air side heat exchange core. In most of the time of the year, even if the compressor is not started, indoor air and outdoor air still continuously pass through the evaporator and the condenser, so that the power of the fan is high, and the efficiency of the whole machine is affected.

Accordingly, there is a need to provide an improved indirect evaporative cooling apparatus to address the above-described problems.

Disclosure of Invention

The object of the present application is to provide an indirect evaporative cooling apparatus of simple structure and low energy consumption.

The application discloses indirect evaporative cooling equipment, which comprises a heat exchanger, two air inlet channels and two air outlet channels; the two air inlet channels and the two air outlet channels are communicated with the heat exchanger; at least one air outlet channel is internally provided with an air valve and a heat exchanger, wherein the air valve is arranged at one side of the air outlet channel in a biased manner, and the heat exchanger is arranged at the other side of the air outlet channel in a biased manner.

Optionally, the two air inlet channels comprise an indoor air inlet channel and an outdoor air inlet channel; the two air outlet channels comprise an indoor air outlet channel and an outdoor air outlet channel.

Optionally, the air valve and the heat exchanger are arranged in the indoor air outlet channel, the air valve is a first air valve, and the heat exchanger is an evaporator.

Optionally, the air valve and the heat exchanger are arranged in the outdoor air outlet channel, the air valve is a second air valve, and the heat exchanger is a condenser.

Optionally, the condenser is disposed below the second damper.

Optionally, the heat exchanger is obliquely arranged in the air outlet channel.

Optionally, the heat exchanger and the air valve are both vertically arranged in the air outlet channel.

Optionally, a spray assembly is also included; the spraying assembly comprises a spray head and a water tank; the spray head is arranged above the heat exchanger; the water tank is arranged below the heat exchanger; the distance from the upper side of the heat exchanger to the top of the indirect evaporative cooling device is equal to the distance from the lower side of the heat exchanger to the top of the water tank.

Optionally, the indoor air inlet channel and the outdoor air inlet channel are arranged at the upper part of the indirect evaporative cooling device; the indoor air outlet channel and the outdoor air outlet channel are arranged at the lower part of the indirect evaporative cooling equipment; the indoor air inlet channel and the outdoor air outlet channel are positioned on one side of the indirect evaporative cooling device, and the outdoor air inlet channel and the indoor air outlet channel are positioned on the other side of the indirect evaporative cooling device.

Optionally, a first fan is arranged in the indoor air inlet channel; a second fan is arranged in the outdoor air outlet channel; a first filter is arranged in the indoor air inlet channel and is positioned at the front side of the first fan; and a second filter is arranged in the outdoor air inlet channel.

Compared with the prior art, the air outlet channel is internally provided with the air valve and the heat exchanger, the air valve is arranged on one side of the air outlet channel, the heat exchanger is arranged on the other side of the air outlet channel, the structure of the equipment is simplified, and meanwhile, when the heat exchanger does not operate, air in the equipment can flow out from the air valve, so that the pressure drop during air flow is reduced, and the energy consumption of the equipment is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.

FIG. 1 is a schematic cross-sectional view of an example embodiment of an indirect evaporative cooling apparatus of the present application.

Fig. 2 is a schematic cross-sectional view taken along line A-A of fig. 1.

Fig. 3 is a schematic cross-sectional view of another example embodiment of an indirect evaporative cooling apparatus of the present application.

Fig. 4 is a schematic cross-sectional view of yet another example embodiment of an indirect evaporative cooling apparatus of the present application.

Reference numerals illustrate: a heat exchanger 10; indoor air inlet channel, 20; a first fan 21; a first filter, 22; indoor air outlet channel, 30; a first damper 31; an outdoor air inlet channel 40; a second filter, 41; an outdoor air passage 50; a second damper 51; a second fan, 52; an air conditioning assembly 60; an evaporator 61; a condenser, 62; a compressor 63; a spray assembly, 70; a shower head 71; a water tank 72; a water pump 73; water baffles, 74.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present description as detailed in the accompanying claims.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Unless defined otherwise, technical or scientific terms used in this specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of an entity. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Next, embodiments of the present specification will be described in detail.

As shown in fig. 1-2, an indirect evaporative cooling apparatus is disclosed. The indirect evaporative cooling apparatus includes a heat exchanger 10, two air inlet channels, and two air outlet channels. Both air inlet channels and both air outlet channels are in communication with the heat exchanger 10. An air valve and a heat exchanger are arranged in the air outlet channel, the air valve is arranged at one side of the air outlet channel, and the heat exchanger is arranged at the other side of the air outlet channel.

The two air inlet channels are an indoor air inlet channel 20 and an outdoor air inlet channel 40 respectively, and the two air outlet channels are an indoor air outlet channel 30 and an outdoor air outlet channel 50 respectively. The air valve and the heat exchanger provided in the indoor air outlet duct 30 are the first air valve 31 and the evaporator 61, respectively. The second damper 51 and the condenser 62 are respectively provided in the outdoor air duct 50.

The indoor air inlet channel 20 is communicated with the indoor air outlet channel 30 through the heat exchanger 10. Indoor air firstly enters the indoor air inlet channel 20, then reaches the heat exchanger 10 and is cooled in the heat exchanger 10, and finally flows back into the room through the indoor air outlet channel 30 to complete circulation. The direction of the solid arrow in the figure represents the direction of movement of the indoor air.

The outdoor air inlet passage 40 communicates with the outdoor air outlet passage 50 through the heat exchanger 10. The outdoor air firstly enters the outdoor air inlet channel 40, then reaches the heat exchanger 10 and takes heat of indoor air in the heat exchanger 10, and finally flows back to the outdoor through the outdoor air outlet channel 50 to complete circulation. The direction of the dashed arrow in the figure represents the direction of movement of the outdoor air.

The indirect evaporative cooling apparatus is generally rectangular in shape. The indoor air intake passage 20 and the outdoor air intake passage 40 are provided at the upper portion of the indirect evaporative cooling apparatus. The indoor air outlet passage 30 and the outdoor air outlet passage 50 are provided at the lower portion of the indirect evaporative cooling apparatus. The indoor air inlet channel 20 and the outdoor air outlet channel 50 are positioned at one side of the indirect evaporative cooling apparatus, and the outdoor air inlet channel 40 and the indoor air outlet channel 30 are positioned at the other side of the indirect evaporative cooling apparatus. The heat exchanger 10 is located in the middle of the indirect evaporative cooling apparatus.

The indirect evaporative cooling apparatus also includes a refrigeration assembly 60. The refrigeration unit 60 includes an evaporator 61, a condenser 62, a compressor 63, and the like. The compressor 63 compresses the refrigerant, and then the refrigerant exchanges heat with the outdoor air in the condenser 62, and then the refrigerant absorbs heat of the indoor air in the evaporator 61 to return to the compressor, thereby completing the cycle.

The indirect evaporative cooling apparatus also includes a spray assembly 70. The spray assembly 70 includes a spray head 71, a water tank 72, a water pump 73, and a water deflector 74. The water pump 73 delivers the cooling liquid in the water tank 72 to the spray head 71, and supplies power to the spray head 71 to spray the cooling liquid from the spray head 71. The spray head 71 is disposed at an upper side of the heat exchanger 10, and the water tank 72 is disposed at a lower side of the heat exchanger 10. The cooling liquid sprayed from the spray head 71 enters the heat exchanger 10 together with the outdoor air, flows into the water tank 72 after passing through the heat exchanger 10, and is conveyed to the spray head 71 by the water pump 73, thereby completing the circulation. A water deflector 74 is provided at an upper edge of the water tank 72 to prevent the coolant from splashing out to damage other devices.

The direction of the movement of the cooling liquid in the heat exchanger 10 is consistent with the direction of the outdoor air in the heat exchanger 10, and the cooling liquid starts to cool the outdoor air when being sprayed out from the spray head 71, so that the cooling of the outdoor air is more sufficient. The outdoor air can cool the indoor air more preferably when the outdoor air exchanges heat with the indoor air in the heat exchanger 10. And the flow direction of the cooling liquid is the same as that of the outdoor air, so that the influence of the cooling liquid on the flow speed of the outdoor air is small, and the flow efficiency of the outdoor air is improved.

The upper side of the heat exchanger 10 is equidistant from the top of the indirect evaporative cooling apparatus as the lower side of the heat exchanger 10 is equidistant from the top of the water tank 72. This arrangement equalizes the cross-sectional area of the air channels on the upper and lower sides of the heat exchanger 10, minimizes windage within the air channels, and reduces the energy consumption of the indirect evaporative cooling apparatus.

A first fan 21 and a first filter 22 are arranged in the indoor air inlet channel 20. The first fan 21 is used for driving indoor air to circulate in the indoor air inlet channel 20, the heat exchanger 10 and the indoor air outlet channel 30. The first filter 22 forms a filtering section in the indoor air intake passage 20 to purify and filter the indoor air that enters the indirect evaporative cooling apparatus. The first filter 22 is disposed at one side of the first fan 21 near the air inlet of the indoor air inlet channel 20. It is possible to prevent particles such as dust from entering the first fan 21 and the heat exchanger 10, affecting the normal operation of the first fan 21 and the heat exchanger 10.

The outdoor air intake passage 40 is provided with a second filter 41. The second filter 41 forms a filtering section in the outdoor air intake passage 40 to purify and filter the intake outdoor air, and prevents outdoor particulate matter from entering the heat exchanger 10 to affect normal operation.

The indoor air outlet duct 30 is a lateral air outlet duct, and indoor air moves along the duct in a horizontal direction. The first air valve 31 and the evaporator 61 are vertically disposed in the indoor air outlet channel 30. The first air valve 31 is located at an upper side of the indoor air outlet duct 30, and the evaporator 61 is located at a lower side of the indoor air outlet duct 30. The air at the upper side of the indoor air outlet passage 30 flows through the first air valve 31, and the air at the lower side of the indoor air outlet passage 30 flows through the evaporator 61. Alternatively, the first air valve 31 may be disposed at a lower side of the indoor air outlet passage 30, and the evaporator 61 is disposed at an upper side of the indoor air outlet passage 30.

The outdoor air passage 50 is a lateral air outlet passage, and outdoor air moves along the passage in a horizontal direction. The second damper 51 and the condenser 62 are vertically disposed in the outdoor air duct 50. The second damper 51 is located on the upper side of the outdoor air passage 50, and the condenser 62 is located on the lower side of the outdoor air passage 50. The air on the upper side of the outdoor air-out path 50 flows through the second air valve 51, and the air on the lower side of the outdoor air-out path 50 flows through the condenser 62. A second fan 52 is also provided in the outdoor air passage 50, the second fan 52 being provided on a side of the second air valve 51 and the condenser 62 near the outlet of the outdoor air passage 50. Alternatively, the second damper 51 may be provided at the lower side of the outdoor air passage 50, and the condenser 62 may be provided at the upper side of the outdoor air passage 50.

During operation of the indirect evaporative cooling apparatus, a portion of the water droplets may pass through the water deflector 74 to the second damper 51 and the condenser 62. Because the water droplets are heavy, water vapor mostly flows at the lower side of the outdoor air outlet passage 50. The condenser 62 is arranged at the lower side of the second air valve 51, so that escaped water drops can be effectively intercepted, and phenomena such as water leakage and water seepage of indirect evaporative cooling equipment are prevented. The second fan 52 is disposed at a side of the second damper 51 and the condenser 62 near the outlet of the outdoor air passage 50, so that the outdoor air upstream of the second fan 52 can flow uniformly.

In an alternative embodiment, as shown in fig. 3, the first air valve 31 and the evaporator 61 are both disposed obliquely to the indoor air outlet 30. The first damper 31 and the evaporator 61 are disposed obliquely with respect to the flow direction of the indoor air. The first air valve 31 and the evaporator 61 form an angle with the flow direction of the indoor air, the angle being greater than 0 ° and less than 90 °. The flow direction of the indoor air is horizontal, so the first damper 31 and the evaporator 61 form an angle with the horizontal, which is greater than 0 ° and less than 90 °.

The flow direction of the evaporator 61 and the indoor air are obliquely arranged, so that the contact area of the evaporator 61 and the indoor air can be increased, the effective heat exchange area of the evaporator 61 is further increased, and the evaporator 61 can be used for better cooling the indoor air. The first air valve 31 is obliquely arranged, so that the area of a ventilation opening can be increased, the wind resistance is reduced, and the energy consumption of indirect evaporative cooling equipment is saved.

The second damper 51 and the condenser 62 are both disposed obliquely to the outdoor air duct 50. The second damper 51 and the condenser 62 are disposed obliquely with respect to the flow direction of the outdoor air. The second air valve 51 and the condenser 62 form an angle with the flow direction of the outdoor air, which is greater than 0 ° and less than 90 °. In the present embodiment, the flow direction of the outdoor air is the horizontal direction, so the second damper 51 and the condenser 62 form an angle with the horizontal direction, and the angle is greater than 0 ° and less than 90 °.

The flow direction of the condenser 62 and the flow direction of the outdoor air are obliquely arranged, so that the contact area between the condenser 62 and the outdoor air can be increased, and the outdoor air can better take away the heat of the condenser 62, thereby cooling the condenser 62. The second air valve 51 is obliquely arranged, so that the area of a ventilation opening can be increased, the wind resistance is reduced, and the energy consumption is saved.

In an alternative embodiment, as shown in fig. 4, in the indoor air outlet duct 30, the first air valve 31 is vertically disposed, and the evaporator 61 forms an angle with the horizontal direction, which is greater than 0 ° and less than 90 °. In the outdoor air outlet passage 50. The second air valve 51 is vertically disposed, and the condenser 62 forms an angle with the horizontal direction, the angle being greater than 0 ° and less than 90 °.

In the above three embodiments, the indoor air outlet channel 30 and the outdoor air outlet channel 50 are provided with heat exchangers and air valves. In other alternative embodiments, the heat exchanger and the air valve may be provided only in the indoor air outlet duct 30, or the heat exchanger and the air valve may be provided only in the outdoor air outlet duct 50. The arrangement of the heat exchanger and the air valve is described in the above embodiments, and thus will not be described in detail.

The air valve and the heat exchanger of the application together occupy an air outlet section of the air outlet channel. The effective ventilation area in the air duct can be controlled by controlling the opening and closing of the air valve and the opening degree of the air valve, so that the air resistance of the air valve and the heat exchanger to air is controlled. The size of the damper and the heat exchanger can be customized according to the region in which the indirect evaporative cooling apparatus is located. In the area with lower temperature throughout the year, the size and the duty ratio of the air valve can be designed to be higher. In areas where temperatures are higher throughout the year, the heat exchanger size and duty cycle may be designed to be lower.

The indirect evaporative cooling device disclosed by the application has various operation modes, and the specific modes are as follows:

in the case where the outdoor air temperature is sufficiently low, the indirect evaporative cooling apparatus operates in the dry mode. In this mode, neither the cooling module 60 nor the shower module 70 is operated, the first fan 21 and the second fan 52 are turned on, and the first damper 31 and the second damper 51 are all opened. Indoor air enters through the indoor air inlet channel 20 to reach the heat exchanger 10. The outdoor cool air enters the heat exchanger 10 through the outdoor air inlet passage 40 and takes heat of the indoor air in the heat exchanger 10. The indoor air then flows back into the room through the indoor air outlet duct 30, and the outdoor air flows back out of the room through the outdoor air outlet duct 50.

In the case of an intermediate outdoor air temperature, the indirect evaporative cooling apparatus operates in the wet mode. The wet mode turns on the spray assembly 70 on a dry mode basis. When the outdoor air reaches the heat exchanger 10, the outdoor air is cooled by the spray assembly 70, and the cooled outdoor air can better take away the heat of the indoor air, so that the indoor air is cooled.

In the case where the outdoor air temperature is high, the indirect evaporative cooling apparatus operates in the hybrid mode. The hybrid mode turns on the refrigeration assembly 60 on a wet mode basis. While the first air valve 31 and the second air valve 51 are closed. Indoor air passes through the evaporator 61, and outdoor air passes through the condenser 62. The compressor 63 of the refrigeration assembly 60 is operated and the condenser 62 is located in the outdoor air passage 50, and the outdoor air takes away heat emitted from the condenser 62. The evaporator 61 absorbs heat of indoor air to cool the indoor air through the indoor air outlet passage 30.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It is to be understood that the present description is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.

Claims (10)

1. An indirect evaporative cooling device is characterized by comprising a heat exchanger, two air inlet channels and two air outlet channels; the two air inlet channels and the two air outlet channels are communicated with the heat exchanger; at least one air outlet channel is internally provided with an air valve and a heat exchanger, wherein the air valve is arranged at one side of the air outlet channel in a biased manner, and the heat exchanger is arranged at the other side of the air outlet channel in a biased manner.

2. The indirect evaporative cooling apparatus of claim 1, wherein the two air intake channels comprise an indoor air intake channel and an outdoor air intake channel; the two air outlet channels comprise an indoor air outlet channel and an outdoor air outlet channel.

3. The indirect evaporative cooling apparatus of claim 2, wherein the damper is disposed within the indoor air outlet channel with the heat exchanger, the damper being a first damper, the heat exchanger being an evaporator.

4. The indirect evaporative cooling apparatus of claim 2, wherein the damper is disposed within the outdoor air outlet channel with the heat exchanger, the damper being a second damper, the heat exchanger being a condenser.

5. The indirect evaporative cooling apparatus of claim 4, wherein the condenser is disposed below the second damper.

6. The indirect evaporative cooling apparatus of claim 1, wherein the heat exchanger is disposed obliquely within the air outlet channel.

7. The indirect evaporative cooling apparatus of claim 1, wherein the heat exchanger and the air valve are both disposed vertically within the air outlet channel.

8. The indirect evaporative cooling apparatus of claim 1, further comprising a spray assembly; the spraying assembly comprises a spray head and a water tank; the spray head is arranged above the heat exchanger; the water tank is arranged below the heat exchanger; the distance from the upper side of the heat exchanger to the top of the indirect evaporative cooling device is equal to the distance from the lower side of the heat exchanger to the top of the water tank.

9. The indirect evaporative cooling apparatus of claim 2, wherein the indoor air intake channel and the outdoor air intake channel are disposed at an upper portion of the indirect evaporative cooling apparatus; the indoor air outlet channel and the outdoor air outlet channel are arranged at the lower part of the indirect evaporative cooling equipment; the indoor air inlet channel and the outdoor air outlet channel are positioned on one side of the indirect evaporative cooling device, and the outdoor air inlet channel and the indoor air outlet channel are positioned on the other side of the indirect evaporative cooling device.

10. The indirect evaporative cooling apparatus of claim 2, wherein a first fan is disposed within the indoor air intake channel; a second fan is arranged in the outdoor air outlet channel; a first filter is arranged in the indoor air inlet channel and is positioned at the front side of the first fan; and a second filter is arranged in the outdoor air inlet channel.