WO2023005472A1 - Système de refroidissement par évaporation indirecte et salle des machines de centre de traitement de données - Google Patents

Système de refroidissement par évaporation indirecte et salle des machines de centre de traitement de données Download PDF

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Publication number
WO2023005472A1
WO2023005472A1 PCT/CN2022/098764 CN2022098764W WO2023005472A1 WO 2023005472 A1 WO2023005472 A1 WO 2023005472A1 CN 2022098764 W CN2022098764 W CN 2022098764W WO 2023005472 A1 WO2023005472 A1 WO 2023005472A1
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WIPO (PCT)
Prior art keywords
air
channel
heat exchange
cooling system
exchange core
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PCT/CN2022/098764
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English (en)
Chinese (zh)
Inventor
王爱辉
蒋钢
张凯
陈俊升
陈玉敏
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中兴通讯股份有限公司
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Publication of WO2023005472A1 publication Critical patent/WO2023005472A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the embodiments of the present application relate to but are not limited to the technical field of data center temperature and humidity control, and particularly relate to an indirect evaporative cooling system and a data center computer room.
  • the indirect evaporative cooling system (hereinafter referred to as the unit) of the existing data center temperature control equipment has been more and more used due to its energy-saving characteristics. Heat to achieve the effect of energy saving. Due to the large size of the unit, its use scenario is usually placed on the facade of the data center and needs to send and return air on the same side. Therefore, the core layout commonly used at present is stacked in the shape of a "field" and arranged in a straight line in the shape of a "one".
  • the "Tian"-shaped stacking design has a longer air flow path, which increases the pressure drop on the air side and thus increases the fan power of the unit; although the "one"-shaped stacking design alleviates the problem of too long air flow paths to a certain extent, the flow field There are more bends and greater wind resistance.
  • An embodiment of the present application provides an indirect evaporative cooling system.
  • the embodiment of the present application provides an indirect evaporative cooling system, including: a shell, the interior is divided to form an indoor circulation chamber, an outdoor circulation chamber and a maintenance chamber, the indoor circulation chamber includes The first return air passage, the second return air passage and the air supply passage are arranged in the direction, and the first return air passage and the second return air passage are located at two ends of the air supply passage along the width direction of the housing.
  • the housing is provided with a first air return port communicated with the first return air channel, a second air return port communicated with the second air return channel and a second air return port communicated with the air supply channel
  • the air supply port connected by the air channel, the first air return port, the second air return port and the air supply port are all arranged at one end of the casing along the length direction
  • the outdoor circulation chamber includes The first air inlet passage, the second air inlet passage and the air outlet passage arranged in the length direction, the first air inlet passage and the second air inlet passage are located on both sides of the air outlet passage along the width direction of the housing and communicate with the air outlet channel
  • the housing is provided with a first air inlet communicated with the first air inlet channel, a second air inlet communicated with the second air inlet channel, and a second air inlet communicated with the air outlet channel.
  • the heat exchange core group including the first heat exchange core and the second heat exchange core arranged along the length direction of the housing, the first heat exchange core and the first heat exchange core Both the return air channel and the first air inlet channel communicate with each other, and are used for heat exchange between the air in the first return air channel and the air in the first air inlet channel, and the second heat exchange core and the Both the second air return channel and the second air inlet channel are connected, and are used for heat exchange between the air in the second air return channel and the air in the second air inlet channel;
  • the internal circulation fan unit is used to drive the indoor The air enters the indoor circulation cavity from the first air return port and the second air return port, and is discharged into the room from the air supply port after passing through the heat exchange core group;
  • the external circulation fan unit is used to drive the outdoor The air enters the outdoor circulation cavity from the first air inlet and the second air inlet, passes through the heat exchange core group, and is discharged from the air outlet to the outside;
  • the spray assembly is provided with a The spray
  • an embodiment of the present application further provides a data center computer room, where the data center computer room includes the above-mentioned indirect evaporative cooling system.
  • Fig. 1 is a schematic top view of an indirect evaporative cooling system provided by an embodiment of the present application
  • Fig. 2 is a schematic diagram of the air flow organization of Fig. 1 at the cross-sectional view at A-A;
  • Fig. 3 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view at B-B in Fig. 2;
  • Fig. 4 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view at C-C in Fig. 3;
  • Fig. 5 is a top view of an indirect evaporative cooling system provided by another embodiment of the present application.
  • Fig. 6 is a schematic diagram of the air flow organization and flow direction of the cross-sectional view at D-D in Fig. 5;
  • Fig. 7 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view of E-E in Fig. 5;
  • Fig. 8 is a top view of an indirect evaporative cooling system provided by another embodiment of the present application.
  • Fig. 9 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view at F-F of Fig. 8;
  • Fig. 10 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view at G-G in Fig. 9;
  • Fig. 11 is a schematic diagram of the flow direction of the airflow organization at the cross-sectional view at H-H in Fig. 10;
  • Fig. 12 is a cross-sectional view of an indirect evaporative cooling system provided by another embodiment of the present application from a top perspective.
  • Housing 100 indoor circulation chamber 110, first air return channel 111, second air return channel 112, air supply channel 113, first air return port 114, second air return port 115, air supply port 116, outdoor circulation chamber 120, second air return channel First air inlet 121, second air inlet 122, air outlet 123, first air inlet 124, second air inlet 125, air outlet 126, maintenance cavity 130, outer maintenance door 131, inner maintenance door 132, weak current cabinet 140, strong electric cabinet 150;
  • Heat exchange core group 200 first heat exchange core 210, second heat exchange core 220;
  • Internal circulation fan unit 300 first fan 310;
  • Spray assembly 500 Spray assembly 500, spray pipe 510, first nozzle 520, second nozzle 530, water tray 540, water pump 550, pipeline system 560;
  • Auxiliary refrigeration assembly 600 evaporator 610, condenser 620, compressor 630, installation platform 631, escalator 632;
  • orientation descriptions such as “up”, “down”, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this application.
  • the application and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the application.
  • the indirect evaporative cooling system includes a shell 100, a heat exchange core group 200, an internal circulation fan unit 300, an external circulation fan unit 400, a spray assembly 500 and an auxiliary Refrigeration assembly 600, the interior of the shell 100 is divided to form an indoor circulation chamber 110, an outdoor circulation chamber 120 and a maintenance chamber 130, the indoor circulation chamber 110 includes a first return air passage 111, a second return air passage arranged along the The air passage 112 and the air supply passage 113, the outdoor circulation chamber 120 includes a first air inlet passage 121, a second air inlet passage 122 and an air outlet passage 123 arranged along the length direction of the casing 100, and the heat exchange core group 200 includes a The first heat exchange core 210 and the second heat exchange core 220 are arranged in the longitudinal direction of the housing 100.
  • the first heat exchange core 210 communicates with the first return air passage 111 and the first air intake passage 121
  • the second The heat exchange core 220 communicates with both the second return air passage 112 and the second air intake passage 122 .
  • the internal circulation fan unit 300 drives the air in the machine room to enter the first return air from the first return air outlet 114 and the second return air outlet 115 on both sides of the housing 100 respectively.
  • the channel 111 and the second return air channel 112 form a two-way return air, and then the two air flows pass through the heat exchange core group 200 and the evaporator 610 to exchange heat and cool down, then enter the air supply channel 113 in opposite directions, and finally discharge into the room from the air supply port 116 , the system optimizes the airflow organization through the setting of two-way return air, effectively reduces the airflow resistance and improves the energy efficiency of the system, and the compressor 630 is set in the maintenance chamber 130, which further reduces the airflow resistance of the system and facilitates the compressor 630 maintenance.
  • the indirect evaporative cooling system includes a shell 100 , a heat exchange core group 200 , an inner circulation fan unit 300 , an outer circulation fan unit 400 , a spray assembly 500 and an auxiliary refrigeration assembly 600 .
  • the casing 100 is roughly in the shape of a cuboid.
  • the interior of the casing 100 is partitioned to form an isolated indoor circulation chamber 110 , an outdoor circulation chamber 120 and a maintenance chamber 130 .
  • the maintenance chamber 130 is located at one end of the casing 100 in the longitudinal direction.
  • the indoor circulation chamber 110 includes a first air return channel 111 , a second air return channel 112 and an air supply channel 113 , and the first return air channel 111 and the second air return channel 112 communicate with the air supply channel 113 respectively.
  • the first return air passage 111, the second return air passage 112 and the air supply passage 113 are arranged along the length direction of the casing 100, and the first return air passage 111 and the second return air passage 112 are located along the air supply passage 113.
  • the air supply channel 113 is closer to the lower end of the housing 100 relative to the first return air channel 111 and the second return air channel 112, and the first return air channel 111 and the second return air channel 112 can be It is arranged symmetrically with respect to the center line of the air supply channel 113 .
  • the other end of the casing 100 in the length direction is provided with a first air return port 114, a second air return port 115 and an air supply port 116, the first air return port 114 and the second air return port 115 are located on both sides of the air supply port 116, and the first air return port 114 It communicates with the first air return channel 111, the second air return port 115 communicates with the second air return channel 112, the air supply port 116 communicates with the air supply channel 113, and the air in the machine room enters the first air return channel 111 through the first air return port 114 , and enter the second return air channel 112 through the second return air port 115, thereby forming a two-way return air flow, optimizing the air flow organization of the system, and the air flow in the two return air channels passes through the heat exchange core group 200 and the evaporator 610 for heat exchange After cooling down, it enters the air supply channel 113, and then is discharged into the room of the machine room through the air supply port 116, thereby
  • the outdoor circulation chamber 120 includes a first air inlet channel, a second air inlet channel and an air outlet channel 123 , and the first air inlet channel and the second air inlet channel communicate with the air outlet channel 123 respectively.
  • the first air inlet passage, the second air inlet passage and the air outlet passage 123 are all arranged along the length direction of the housing 100, and the first air inlet passage and the second air inlet passage are located along the air outlet passage 123 along the housing 100.
  • the air outlet channel 123 is close to the upper end of the housing 100, the first air inlet channel and the first return air channel 111 are located on one side of the air supply channel 113, the second air inlet channel and the second return air channel 112 is located on the other side of the air supply channel 113 .
  • the casing 100 is provided with a first air inlet 124 , a second air inlet 125 and an air outlet 126 , and the first air inlet 124 and the second air inlet 125 can be provided with a high-efficiency filter to filter impurities such as dust in the air.
  • the first air inlet 124 and the second air inlet 125 can be arranged on the two side walls in the width direction of the housing 100, the air outlet 126 can be arranged on the top wall of the housing 100, and the first air inlet 124 communicates with the first air inlet passage , the second air inlet 125 communicates with the second air inlet channel, and the air outlet 126 communicates with the air outlet channel 123 .
  • Outdoor air enters the first air inlet passage through the first air inlet 124, and enters the second air inlet passage through the second air inlet 125, and the airflow in the two air inlet passages passes through heat exchange with the airflow of the two return air passages. , then enters the air outlet channel 123, and finally is discharged outside from the air outlet 126, thereby forming an external circulation of outdoor air.
  • the heat exchange core group 200 includes a first heat exchange core 210 and a second heat exchange core 220 arranged along the length direction of the casing 100, the first heat exchange core 210 and the second heat exchange core
  • a return air channel 111 communicates with the first air intake channel, and the indoor air in the first air return channel 111 and the outdoor air in the first air intake channel exchange heat through the first heat exchange core 210 .
  • the second heat exchange core 220 communicates with both the second return air passage 112 and the second air intake passage, and the indoor air in the second return air passage 112 and the outdoor air in the second air intake passage pass through the second heat exchange core Body 220 performs heat exchange.
  • the internal circulation fan unit 300 is used to drive indoor air from the first air return port 114 and the second air return port 115 into the indoor circulation cavity 110 , and after passing through the heat exchange core group 200 , it is discharged into the room from the air supply port 116 .
  • the external circulation fan unit 400 is used to drive outdoor air to enter the outdoor circulation chamber 120 from the first air inlet 124 and the second air inlet 125 , and to be discharged outside through the air outlet 126 after passing through the heat exchange core group 200 .
  • the spray assembly 500 is provided with a spray pipe 510 located in the outdoor circulation chamber 120, and the spray pipe 510 is used to spray the outdoor air entering the outdoor circulation chamber 120, so that the outdoor air can be absorbed through the evaporation of water.
  • the heat of the air realizes the cooling of the outdoor air, so that the outdoor air can cool the indoor air through the heat exchange core group 200 .
  • the auxiliary refrigeration assembly 600 is provided with a connected evaporator 610 , a condenser 620 and a compressor 630 , and the evaporator 610 is located in the air supply channel between the air supply port 116 and the heat exchange core group 200
  • the condenser 620 is located in the air outlet channel 123 between the air outlet 126 and the heat exchange core group 200
  • the compressor 630 is located in the maintenance chamber 130 .
  • the maintenance chamber 130 can be provided with an installation platform 631 on which the compressor 630 is located, and the installation platform 631 can be provided with an escalator 632 for easy up and down, so as to prevent the compressor 630 from being arranged in the outdoor circulation chamber 120 from increasing wind resistance, and at the same time Maintenance of the compressor 630 may also be facilitated.
  • the end of the first heat exchange core 210 facing the air outlet channel 123 and the end of the second heat exchange core 220 facing the air outlet channel 123 gradually Set close to each other, so that the first heat exchange core 210 and the second heat exchange core 220 are in an inverted V shape, which is conducive to the rapid drainage of the first heat exchange core 210 and the second heat exchange core 220, and reduces the temperature in winter, etc.
  • the first heat exchange core 210 and the second heat exchange core 220 may be damaged due to frosting or freezing of condensed water.
  • the end of the first heat exchange core 210 away from the first air return port 114 and the end of the second heat exchange core 220 away from the second air return port 115 One end is gradually set away from, so that the first return air passage 111 and the second return air passage 112 are gradually narrowed along the length direction of the housing 100, which is conducive to reducing the inlet wind speed of the first return air port 114 and the second return air port 115, reducing The wind resistance in the indoor circulation cavity 110 is conducive to further improving the energy efficiency of the system. As shown in FIGS.
  • the internal circulation fan unit 300 since the housing 100 has a large longitudinal dimension, in order to better realize the internal circulation of indoor air, the internal circulation fan unit 300 includes a plurality of first fans 310 A plurality of first fans 310 are arranged at intervals in the air supply channel 113 along the length direction of the casing 100, so that the air supply channel 113 can be blown by the plurality of first fans 310 in the length direction of the casing 100, improving The smoothness of indoor air circulation.
  • the end of the air supply channel 113 away from the evaporator 610 gradually increases in the shape of a trumpet along the height direction of the housing 100, that is, the air supply end surface of the air supply channel 113 is in the shape of a trumpet.
  • the air supply resistance of the first fan 310 in the air supply channel 113 can be further reduced, thereby further improving the energy efficiency of the system.
  • a plurality of first fans 310 are configured as multiple groups of first fan groups, each group of first fan groups includes at least one first fan group 310, and multiple groups of first fan groups Staggered settings along the height direction of the casing 100, for example, along the direction close to the air supply port 116, the positions of multiple first fan groups gradually rise or fall, so that each first fan group is in the height direction of the casing 100
  • the air supply is staggered to reduce the resistance of the air supply and achieve a more uniform air supply effect. As shown in FIG.
  • multiple groups of first fan units may be staggered along the width direction of the casing 100, so that each first fan group staggers the air supply in the width direction of the casing 100, thereby reducing the air supply.
  • the resistance can achieve a more uniform air supply effect.
  • multiple sets of first fan units are staggered along the height direction of the casing 100 and staggered along the width direction of the casing 100, so that a more uniform air supply effect can be obtained.
  • the external circulation fan unit 400 includes a plurality of second fans 410, a plurality of The second fan 410 is arranged on the outer wall of the housing 100 at intervals along the length direction of the housing 100, and the outer wall of the housing 100 is provided with an air outlet 126 at a corresponding position, and the second fan 410 is installed at the air outlet 126, so that the air outlet channel 123 Along the length direction of the casing 100 , multiple second fans 410 can be used to blow out air, so as to improve the smoothness of external circulation of outdoor air.
  • the plurality of second fans 410 may be arranged as a group of second fan groups arranged in a line, or as two groups of second fan groups arranged side by side.
  • a plurality of second fans 410 are arranged as two groups of second fan groups arranged side by side on the outer wall of the casing 100, wherein one group of second fan groups is used to turn the first The outdoor air in the air passage is exhausted outside, and another set of second fan units is used to discharge the outdoor air in the second air inlet passage outdoors, so that more efficient air outlet can be realized.
  • two sets of second fan units are gradually set away from the end of the housing 100, so that the two groups of second fan units are V-shaped. , so that the accumulation of rainwater or snow on the top of the second fan 410 can be reduced.
  • the plurality of second fans 410 are arranged as a group of second fan units arranged in a line, the second fan units can also be arranged obliquely, and the above-mentioned technical effect can also be obtained.
  • both the first heat exchange core 210 and the second heat exchange core 220 have a double-layer core structure, and the double-layer core structure includes first cores distributed up and down. and the second core, the shower pipe 510 is arranged between the first core and the second core, the shower pipe 510 is provided with a first nozzle 520 towards the first core and a second nozzle towards the second core 530, the diameter of the first nozzle 520 is smaller than the diameter of the second nozzle 530, so that the water sprayed by the first nozzle 520 can form more water mist, which is beneficial to improve the effect of water vaporization and heat absorption, and improve the heat exchange core. Heat transfer efficiency of group 200.
  • the spray assembly 500 is also provided with a water receiving tray 540 and a water pump 550, and the water receiving tray 540 is located in the outdoor circulation chamber 120 for receiving the water sprayed from the spray pipe 510.
  • Water, the water pump 550 is used to transport the water from the water receiving tray 540 to the spray pipe 510, so as to realize water recycling, save water resources, and reduce the use cost of the system.
  • the water pump 550 is a pipeline pump, and the pipeline pump is arranged in the maintenance chamber 130, so as to facilitate the maintenance of the pipeline pump and prevent the pipeline pump from being easily damaged due to damaged by low temperatures.
  • the pipeline system 560 and corresponding sensors of the spray assembly 500 can also be arranged in the maintenance cavity 130, so as to effectively prevent the failure of the pipeline system 560, sensors and other components due to low temperature, and also facilitate daily maintenance.
  • the water pump 550 may also be a submersible pump, which is arranged on the water receiving tray 540 .
  • the bottom wall of the water receiving tray 540 has a sunken position, the position of the sunken position is relatively low so as to facilitate the accumulation of water, the pipeline pump is connected with a suction pipe extending into the sunken position, so that The pipeline pump can more fully absorb the water on the water receiving tray 540 .
  • the water receiving tray 540 may have a V-shaped structure, so that a sink is formed in the middle of its bottom wall.
  • the water receiving tray 540 may also be inclined so that a sink is formed on one side thereof.
  • the water receiving tray 540 can also be formed with a sunken position in the center relative to the outer periphery.
  • the indirect evaporative cooling system also includes a weak current cabinet 140 and a strong current cabinet 150, the corresponding functional modules of the weak current cabinet 140 and the strong
  • the electric cabinet 150 is arranged in the maintenance cavity 130, so that the maintenance of the weak current cabinet 140 and the strong current cabinet 150 can be facilitated, and it is not necessary to separately set a maintenance rainproof shed for maintenance in rainy and snowy days.
  • the maintenance doors of the strong current cabinet 150 and the weak current cabinet 140 are set as inward opening maintenance doors.
  • An inner maintenance door 132 may also be provided between the maintenance chamber 130 and the indoor circulation chamber 110 , so as to facilitate entering the indoor circulation chamber 110 through the maintenance chamber 130 .
  • the maintenance chamber 130 is also provided with an outer maintenance door 131 for communicating with the outside world.
  • the indirect evaporative cooling system further includes a bypass air valve 700, the gap between the evaporator 610 and the inner wall of the air supply channel 113 forms a bypass area, and the bypass air valve 700 is arranged on bypass area.
  • the bypass air valve 700 When the system is in the non-auxiliary refrigeration working condition, that is, when the system does not need to open the auxiliary refrigeration assembly 600 to achieve the cooling effect, by opening the bypass ventilation valve 700, the wind resistance of the indoor air circulation can be effectively reduced, which is conducive to improving the overall performance of the system. annual energy efficiency.
  • an embodiment of the present application also provides a data center computer room including the above-mentioned indirect evaporative cooling system.
  • the data center computer room adopts natural cooling and mechanical auxiliary cooling through the indirect evaporative cooling system, and can provide corresponding Cooling capacity, to meet the demand for air cooling and heat dissipation of data center equipment.
  • the indirect evaporative cooling system includes a shell, a heat exchange core group, an internal circulation fan unit, an external circulation fan unit, a spray assembly and an auxiliary refrigeration assembly, wherein the internal partition of the shell forms an indoor circulation cavity, an outdoor circulation cavity and a maintenance cavity, the indoor circulation cavity includes a first return air passage, a second return air passage and an air supply passage arranged along the length direction of the shell, and the outdoor circulation chamber includes a first return air passage arranged along the length direction of the casing An air inlet channel, a second air inlet channel and an air outlet channel, the heat exchange core group includes a first heat exchange core and a second heat exchange core arranged along the length direction of the shell, the first heat exchange core and Both the first return air passage and the first air inlet passage are connected, and the second heat exchange core is connected with both the second return air passage and the second air inlet passage.
  • the internal circulation fan unit drives the air in the machine room to enter the first return air channel and the second air return channel from the first return air outlet and the second air return port on both sides of the casing
  • the return air channel thus forming a two-way return air, and then the two airflows pass through the heat exchange core group and the evaporator to exchange heat and cool down, then enter the air supply channel in opposite directions, and finally discharge into the room from the air supply port.
  • the compressor is placed in the maintenance cavity, which optimizes the airflow organization, effectively reduces the airflow resistance, and improves the energy efficiency of the system.

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Abstract

L'invention concerne un système de refroidissement par évaporation indirecte et une salle des machines de centre de traitement des données. Le système de refroidissement par évaporation indirecte comprend un boîtier (100), un ensemble cœur d'échange de chaleur (200), un ensemble ventilateur de circulation interne (300), un ensemble ventilateur de circulation externe (400), un ensemble jet d'eau (500) et un ensemble de réfrigération auxiliaire (600). L'intérieur du boîtier (100) est divisé en une chambre de circulation d'intérieur (110), une chambre de circulation d'extérieur (120) et une chambre de maintenance (130). La chambre de circulation d'intérieur (110) comprend un premier canal de retour d'air (111), un second canal de retour d'air (112) et un canal d'alimentation en air (113) ; la chambre de circulation d'extérieur (120) comprend un premier canal d'admission d'air (121), un second canal d'admission d'air (122) et un canal de refoulement d'air (123). L'ensemble cœur d'échange de chaleur (200) comprend un premier corps (210) de cœur d'échange de chaleur et un second corps (220) de cœur d'échange de chaleur, le premier corps (210) de cœur d'échange de chaleur étant relié à la fois au premier canal de retour d'air (111) et au premier canal d'admission d'air (121), et le second corps (220) de cœur d'échange de chaleur étant relié à la fois au second canal de retour d'air (112) et au second canal d'admission d'air (122).
PCT/CN2022/098764 2021-07-26 2022-06-14 Système de refroidissement par évaporation indirecte et salle des machines de centre de traitement de données WO2023005472A1 (fr)

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CN202110842780.4A CN115682193A (zh) 2021-07-26 2021-07-26 间接蒸发冷却系统及数据中心机房
CN202110842780.4 2021-07-26

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CN116017962A (zh) * 2023-03-28 2023-04-25 义博通信设备集团股份有限公司 一种节能型基站空调
CN116583062A (zh) * 2023-07-12 2023-08-11 长春职业技术学院 一种基于汽车智能控制用车载雷达响应装置
CN117062418A (zh) * 2023-10-09 2023-11-14 杭州海康威视数字技术股份有限公司 雷达装置

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