CN212064728U

CN212064728U - Heat exchange system

Info

Publication number: CN212064728U
Application number: CN202021057440.8U
Authority: CN
Inventors: 薛宏升; 李敏; 叶伟现; 韩北鲲; 张建
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-12-01
Anticipated expiration: 2030-06-10

Abstract

The application discloses a heat exchange system, and relates to the technical field of cooling of data centers which can be used for (including but not limited to) cloud computing, cloud storage, big data computing, deep learning, image processing and the like. The heat exchange system comprises a cooling tower outside the data center machine room; the hot channel is arranged in the data center machine room; the evaporation section of the heat pipe is arranged in the heat channel; the condensation section of the heat pipe is arranged at the air inlet of the cooling tower; the circulation pipeline of the heat pipe is communicated with the evaporation section and the condensation section. The embodiment of the application can realize that the heat absorbed by the evaporation section of the heat pipe from the data center machine room through the condensation section of the heat pipe is dissipated to the air inlet of the cooling tower, so that the heat dissipated is utilized to heat the outdoor air flowing into the first cooling tower through the air inlet of the first cooling tower.

Description

Heat exchange system

Technical Field

The present application relates to the field of equipment cooling technology, and in particular, to the field of cooling technology for data centers that may be used for applications including (but not limited to) cloud computing, cloud storage, big data computing, deep learning, and image processing.

Background

When the data center machine room works, internal equipment can generate heat, and in order not to influence the normal work of the data center machine room, a corresponding heat exchange system needs to be configured to exchange heat for the data center machine room. A cooling tower, which is one of the devices of the heat exchange system, is generally set up to operate in an outdoor environment. However, under the low temperature environment, the cooling tower is affected by the outdoor cold air, the freezing condition of the cooling tower occurs on the heat exchange component inside the cooling tower in the heat exchange process, when the heat exchange component freezes more, the work of the cooling tower and the whole heat exchange system is affected, even the service life of the cooling tower is affected, and the cooling tower is damaged.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the present application, there is provided a heat exchange system comprising:

the first cooling tower is arranged outside the data center machine room;

the hot channel is arranged inside the data center machine room;

the heat pipe is provided with an evaporation section, a condensation section and a circulating pipeline, wherein the evaporation section is arranged in the heat channel and used for absorbing heat generated by equipment in the data center machine room; the condensation section is arranged at the air inlet of the first cooling tower and is used for dissipating the heat absorbed by the evaporation section to the air inlet of the first cooling tower; the circulating pipeline is communicated with the evaporation section and the condensation section.

In one embodiment, the circulation line includes a first delivery pipe connected between the output of the evaporation section and the input of the condensation section, and a second delivery pipe connected between the input of the evaporation section and the output of the condensation section.

In one embodiment, the input end of the condensation section is detachably connected with the first conveying pipe through a quick coupling, and the output end of the condensation section is detachably connected with the second conveying pipe through a quick coupling.

In one embodiment, the evaporator end is disposed outside of a heat sink of the device, which communicates with the thermal channel.

In one embodiment, the first cooling tower is provided with a plurality of first cooling towers, the heat pipes are provided with a plurality of heat pipes, the evaporation sections of the heat pipes are arranged in the heat channel, and the condensation sections of the heat pipes are arranged at the air inlets of the first cooling towers in a one-to-one correspondence manner.

In one embodiment, the heat exchange system further comprises:

the cold channel is arranged inside the data center machine room;

and the refrigerating device is connected with the hot channel, the cold channel and the first cooling tower, and is used for exchanging heat for hot air input by the hot channel according to cold energy provided by the first cooling tower and inputting cold air after heat exchange into the data center machine room through the cold channel.

In one embodiment, the heat exchange system further comprises:

the second cooling tower is arranged outside the data center machine room, an air inlet grille is arranged at an air inlet of the second cooling tower, a spraying device is arranged at an air outlet of the second cooling tower, and a heat exchange core body of the second cooling tower is connected with the hot channel and the cold channel respectively.

In one embodiment, the condensation section comprises a plurality of cooling fins, each cooling fin is arranged at intervals at the air inlet of the first cooling tower, and each cooling fin is detachably connected with the air inlet of the first cooling tower.

In one embodiment, a thermal expansion valve is provided on the circulation line.

In one embodiment, at least one of a pressure detection point, an isolation valve, and a refrigerant charge port is provided on the circulation line.

This application embodiment is owing to set up the evaporation zone of heat pipe in the hot passageway of data center computer lab, sets up the air intake at first cooling tower with the condensation segment of heat pipe, consequently can realize giving off the evaporation zone of heat pipe to the air intake department of first cooling tower from the absorbed heat in the data center computer lab through the condensation segment of heat pipe to the realization utilizes the heat that gives off to heat the outdoor wind that flows in first cooling tower via the air intake of first cooling tower to heat up.

It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present application will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

FIG. 1 is a schematic diagram of a heat exchange system according to an embodiment of the present application;

FIG. 2 is a schematic view of a heat exchange system according to another embodiment of the present application;

FIG. 3 is a schematic view of a heat exchange system according to another embodiment of the present application;

FIG. 4 is a schematic view of a heat exchange system according to another embodiment of the present application;

FIG. 5 is a schematic view of a heat exchange system according to another embodiment of the present application;

FIG. 6 is a schematic view of a heat exchange system according to another embodiment of the present application.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

According to an embodiment of the present application, as shown in fig. 1, the present application provides a heat exchange system, including: a first cooling tower 10, a hot aisle 20, and a heat pipe 30.

The first cooling tower 10 is disposed outside the data center room 100. The first cooling tower 10 may be any cooling tower known in the art. For example, a cooling tower using indirect heat exchange between air and air or a cooling tower using heat exchange between air and a cooling liquid is used according to the difference of heat exchange media. The first cooling tower 10 may be disposed in other spatial areas outside of the data center room 100 or in an outdoor environment.

The hot aisle 20 is disposed inside the data center room 100. The hot aisle 20 is used for transporting heat generated by each device in the data center room 100 during operation to the outside of the data center room 100. Specifically, the hot aisle 20 may convey hot air around the servers in each cabinet 110 in the data center room 100 to the outside of the data center room 100 for heat exchange. The arrangement, the arrangement position, the arrangement number, and the like of the hot aisle 20 in the data center room 100 may be selected and adjusted according to the heat exchange requirement, and are not specifically limited herein. The data center machine room 100 may be a data center machine room 100 used in business fields such as cloud computing, cloud service, cloud platform, cloud storage, big data, and the like, and may also be a data center machine room 100 applied to data processing scenarios such as neural networks, deep learning, and the like.

The heat pipe 30 has an evaporation section 31, a condensation section 32, and a circulation line 33. An evaporator end 31 is disposed in the hot aisle 20 for absorbing heat generated by equipment in the data center room 100. The condensing section 32 is disposed at the air inlet 11 of the first cooling tower 10, and is used for dissipating the heat absorbed by the evaporating section 31 to the air inlet 11 of the first cooling tower 10. The circulation pipeline 33 is connected to the evaporation section 31 and the condensation section 32, and is used for conveying the gaseous refrigerant, which is obtained by phase change of the liquid refrigerant in the evaporation section 31 after absorbing heat, to the condensation section 32, and conveying the liquid refrigerant, which is obtained by phase change of the gaseous refrigerant in the condensation section 32 after absorbing external cold, to the evaporation section 31. The liquid refrigerant in the evaporation section 31 absorbs heat of the hot air conveyed in the hot passageway 20 during the phase change process into the gaseous refrigerant, so that the temperature of the hot air conveyed in the hot passageway 20 can be reduced. The gaseous refrigerant in the condensation section 32 absorbs the cold energy of the ambient external cold air and emits heat to the ambient environment in the process of changing the phase of the gaseous refrigerant into the liquid refrigerant, so that the temperature of the ambient external air around the condensation section 32 can be raised, that is, the temperature of the air around the air inlet 11 of the first cooling tower 10 is raised, and thus the temperature of the ambient external cold air is raised when the ambient external cold air flows into the first cooling tower 10 through the air inlet 11.

The heat pipe 30 may adopt any heat pipe 30 structure in the prior art, as long as the automatic phase change heat exchange of the refrigerant inside the heat pipe 30 under the influence of temperature can be realized. The refrigerant inside the heat pipe 30 may be selected according to the requirement, and for example, the refrigerant may be any temperature-dependent phase-changeable refrigerant such as R134a, R22, R410c, R407, etc.

In the embodiment, since the evaporation section 31 of the heat pipe 30 is disposed in the hot aisle 20 of the data center room 100, and the condensation section 32 is disposed at the air inlet 11 of the first cooling tower 10, the heat absorbed by the evaporation section 31 of the heat pipe 30 from the data center room 100 can be dissipated to the air inlet 11 of the cooling tower through the condensation section 32 of the heat pipe 30, so that the outdoor air flowing into the first cooling tower 10 through the air inlet 11 of the first cooling tower 10 is heated by the dissipated heat. So that the temperature of the air flowing into the first cooling tower 10 through the air inlet 11 is not so low that the devices or cooling water inside the first cooling tower 10 are frozen into ice in a low temperature environment. The service life of the first cooling tower 10 and the working efficiency of the first cooling tower 10 are effectively improved.

In one embodiment, as shown in FIG. 1, circulation line 33 includes a first delivery tube 331 and a second delivery tube 332. The first delivery pipe 331 is connected between the output end of the evaporation section 31 and the input end of the condensation section 32, and is used for delivering the refrigerant changed into the gaseous state in the evaporation section 31 to the condensation section 32. A second delivery pipe 332 is connected to the input end of the evaporation section 31 and the output end of the condensation section 32, and is used for delivering the refrigerant changed into the liquid state in the condensation section 32 to the evaporation section 31. In the present embodiment, the refrigerant can circulate in the heat pipe 30 through the first delivery pipe 331 and the second delivery pipe 332.

In the present embodiment, the refrigerant can be circulated in the heat pipe 30 to change phase through the first delivery pipe 331 and the second delivery pipe 332, so that the refrigerant can effectively absorb heat from the air outside the evaporation section 31 and effectively dissipate heat to the air outside the condensation section 32.

In one example, the first and

second transfer pipes

331 and 332 are insulated piping 30 lines.

In one embodiment, the input end of the condensation section 32 is detachably connected to the first delivery pipe 331 through a quick coupling, and the output end of the condensation section 32 is detachably connected to the second delivery pipe 332 through a quick coupling. The quick coupling may be any quick coupling in the prior art, and is not particularly limited herein.

In this embodiment, since the input end and the output end of the condensation section 32 are connected to the first delivery pipe 331 and the second delivery pipe 332 through quick connectors, the condensation section 32 of the heat pipe 30 can be easily assembled and disassembled. When the first cooling tower 10 does not need the condensation section 32 of the heat pipe 30 to heat the air at the air inlet 11, the condensation section 32 of the heat pipe 30 can be removed quickly.

In one embodiment, the evaporator end 31 is disposed outside the heat sink 111 of the device, and the heat sink 111 of the device is in communication with the thermal channel 20.

In one example, as shown in fig. 1 and 2, a plurality of racks 110 are disposed in a data center room 100. At least one server is disposed in each cabinet 110. A heat dissipation opening 111 is formed at the rear portion of each cabinet 110, and an exhaust fan 112 is disposed on the heat dissipation opening 111. First heat channels 20 are formed between the heat dissipation openings 111 of two adjacent rows of racks 110, and each first heat channel 20 is further communicated with a second heat channel 20. The first hot aisle 20 is configured to convey hot air exhausted from the heat vents 111 of the cabinets 110 to the second hot aisle 20, and the hot air in the second hot aisle 20 is conveyed to a cooling air conditioner outside the data center room 100 to be changed into cold air after heat exchange, and is conveyed back to the data center room through the cold aisle 40. The evaporation section 31 of the heat pipe 30 extends into at least a part of the first heat channel 20 and is located outside the heat dissipation opening 111 of the cabinet 110, and is used for directly absorbing a part of heat of the hot air exhausted from the heat dissipation opening 111 of the cabinet 110, so as to reduce heat of the hot air delivered to the second heat channel 20. After the evaporation section 31 of the heat pipe 30 absorbs the heat of the hot air exhausted from the heat dissipating port 111, the refrigerant in the evaporation section 31 changes to a gaseous state and flows to the condensation section 32 located at the air inlet 11 of the first cooling tower 10, so that the gaseous refrigerant in the condensation section 32 can contact with the cold air at the air inlet 11 to condense and dissipate the heat to the air inlet 11.

In one embodiment, as shown in fig. 3, there are a plurality of first cooling towers 10, a plurality of heat pipes 30, evaporation sections 31 of the heat pipes 30 are disposed in the heat channel 20, and condensation sections 32 of the heat pipes 30 are disposed in the air inlets 11 of the first cooling towers 10 in a one-to-one correspondence. Since the air inlet 11 of each first cooling tower 10 is provided with the evaporation section 31 of the heat pipe 30, it is ensured that no icing occurs inside each first cooling tower 10. The normal operation of each first cooling tower 10 is ensured.

In one embodiment, as shown in FIG. 4, in the case where the intake vent 11 of the first cooling tower 10 is large in size, the condensation sections 32 of the plurality of heat pipes 30 may be disposed at the intake vent 11.

In one embodiment, as shown in fig. 5, the heat exchange system further comprises:

and the cold channel 40 is arranged inside the data center machine room 100.

And the refrigerating device 50 is connected with the hot channel 20, the cold channel 40 and the first cooling tower 10. The refrigerating device 50 is used for exchanging heat for hot air input by the hot aisle 20 according to the cold energy provided by the first cooling tower 10, and inputting the cold air after exchanging heat to the data center room 100 through the cold aisle 40.

In this embodiment, while the evaporation section 31 of the heat pipe 30 exchanges heat with hot air in the data center room 100, the refrigeration device 50 is utilized to transport cold air to the data center room 100 through the cold channel 40, so that the heat exchange efficiency of the data center room 100 can be effectively improved, and the heat pipe 30 is an automatic heat exchange without driving force, so that the energy consumption is not increased while the heat exchange efficiency is improved.

In one example, the refrigeration unit 50 may include a heat exchanger, a chiller, and an air conditioner. The heat exchanger is used for exchanging heat with the hot air in the hot aisle 20. The water chilling unit is used for exchanging heat for chilled water of the air conditioner through cooling water of the first cooling tower 10. The air conditioner further cools the air after heat exchange of the heat exchanger by using chilled water after heat exchange of the water chilling unit, and conveys the cooled cold air to the data center machine room 100 through the cold channel 40.

In one embodiment, as shown in fig. 6, the heat exchange system further includes a second cooling tower 60 disposed outside the data center room 100, an air inlet of the second cooling tower 60 is provided with an air inlet grille 61, and an air outlet of the second cooling tower 60 is provided with a spraying device 62 and a fan 64. The heat exchange core 63 of the second cooling tower is connected to the hot channel 20 and the cold channel 40 of the data center room 100 respectively. The second cooling tower 60 is in contact with the heat exchange core 63 through the cold air flowing in from the air inlet grille 61, so that the hot air input from the hot channel 20 in the heat exchange core 63 is subjected to heat exchange in an air-air heat exchange mode, and the air after heat exchange is input into the cold channel 40.

The first cooling tower 10 is used for cooling the cooling water in the heat exchange system. The second cooling tower 60 is used to directly cool the hot air inside the data center room 100. The air inlet of the second cooling tower 60 can also be provided with a condensation section of a heat pipe, and spraying can also be adopted in winter for phase change heat exchange, so that the fan frequency of the cooling tower is reduced, and the purpose of energy conservation is achieved.

In one embodiment, as shown in fig. 1, the condensation section 32 includes a plurality of cooling fins 321, each cooling fin is spaced apart from the inlet 11 of the first cooling tower 10, and each cooling fin is detachably connected to the inlet 11 of the first cooling tower 10.

In the present embodiment, since the condensation section 32 is composed of a plurality of heat dissipation fins, the heat dissipation efficiency can be improved, thereby ensuring that the cold air at the air inlet 11 of the first cooling tower 10 can be sufficiently heated.

In one embodiment, a thermostatic expansion valve may be disposed on the circulation line 33. The thermostatic expansion valve is used for controlling the flow of the refrigerant according to the pressure in the heat pipe 30, so as to ensure the normal and stable operation of the heat pipe 30. The thermostatic expansion valve may adopt any thermostatic expansion valve structure in the prior art, and is not limited herein.

In one embodiment, a pressure detection point may be disposed on the circulation line 33 for detecting whether the pressure inside the heat pipe 30 is normal. The circulation line 33 may further be provided with an isolation valve, so that when the heat pipe 30 is not needed or the condensation section 32 of the heat pipe 30 needs to be detached from the air inlet 11 of the first cooling tower 10, the flow of the refrigerant in the heat pipe 30 can be throttled by the isolation valve, thereby preventing the refrigerant from leaking. The isolation valve may adopt any isolation valve structure in the prior art, and is not particularly limited herein. A refrigerant charge port may be further provided in the circulation line 33 for injecting refrigerant into the heat pipe 30 or extracting refrigerant from the heat pipe 30.

In one example, as shown in fig. 1, the first cooling tower 10 includes at least an air inlet 11, an air outlet 12, a fan 13, and a heat exchange core 14. The heat exchanging core 14 is used for exchanging heat with air flowing in from the air inlet 11. The air outlet 12 is used for discharging the air after heat exchange. The exhaust fan 13 is used for providing driving force for the air outlet 12 to exhaust the air after heat exchange.

In another example, a cooling liquid spray device may be further disposed above the heat exchange core of the first cooling tower 10 and/or the second cooling tower 60.

In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, 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 application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat exchange system, comprising:

the first cooling tower is arranged outside the data center machine room;

the hot channel is arranged inside the data center machine room;

the heat pipe is provided with an evaporation section, a condensation section and a circulating pipeline, wherein the evaporation section is arranged in the hot channel and used for absorbing heat generated by equipment in the data center machine room; the condensation section is arranged at the air inlet of the first cooling tower and is used for dissipating the heat absorbed by the evaporation section to the air inlet of the first cooling tower; the circulation pipeline is communicated with the evaporation section and the condensation section.

2. The heat exchange system of claim 1, wherein the circulation line comprises a first delivery line connected between the output of the evaporation section and the input of the condensation section, and a second delivery line connected between the input of the evaporation section and the output of the condensation section.

3. The heat exchange system of claim 2, wherein the input end of the condensation section is detachably connected with the first conveying pipe through a quick coupling, and the output end of the condensation section is detachably connected with the second conveying pipe through the quick coupling.

4. The heat exchange system of claim 1, wherein the evaporator section is disposed outside of a heat sink of the device, the heat sink of the device being in communication with the thermal channel.

5. The heat exchange system of claim 1, wherein the first cooling tower is provided with a plurality of heat pipes, the evaporation section of each heat pipe is arranged in the heat channel, and the condensation section of each heat pipe is arranged at the air inlet of each first cooling tower in a one-to-one correspondence manner.

6. The heat exchange system of claim 1, further comprising:

the cold channel is arranged inside the data center machine room;

and the refrigerating device is connected with the hot channel, the cold channel and the first cooling tower, and is used for exchanging heat of hot air input by the hot channel according to cold energy provided by the first cooling tower and inputting cold air after heat exchange into the data center machine room through the cold channel.

7. The heat exchange system of claim 6, further comprising:

8. The heat exchange system of claim 1, wherein the condensation section comprises a plurality of cooling fins, each cooling fin is spaced apart from the air inlet of the first cooling tower, and each cooling fin is detachably connected to the air inlet of the first cooling tower.

9. The heat exchange system of claim 1, wherein a thermostatic expansion valve is disposed on the circulation line.

10. The heat exchange system of claim 1, wherein the circulation line is provided with at least one of a pressure detection point, an isolation valve, and a refrigerant charge port.