CN110691492B - Refrigeration system and data center - Google Patents

Refrigeration system and data center Download PDF

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Publication number
CN110691492B
CN110691492B CN201910773882.8A CN201910773882A CN110691492B CN 110691492 B CN110691492 B CN 110691492B CN 201910773882 A CN201910773882 A CN 201910773882A CN 110691492 B CN110691492 B CN 110691492B
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China
Prior art keywords
air
data center
direct
hot
valve
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CN110691492A (en
Inventor
曾兴旺
陈皓
陈凤
林清民
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XIAMEN HUARUISHENG INTELLIGENT TECHNOLOGY Co.,Ltd.
Kehua Data Co Ltd
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Xiamen Huaruisheng Intelligent Technology Co ltd
Xiamen Kehua Hengsheng Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20836Thermal management, e.g. server temperature control

Abstract

The invention belongs to the technical field of air conditioning, and provides a refrigeration system and a data center. The refrigerating system comprises a direct evaporation refrigerating device, an air conditioner, a main controller and an indoor temperature acquisition device; the direct evaporation refrigerating device comprises a direct refrigerating mechanism arranged on the roof, an air supply valve which is communicated with the direct refrigerating mechanism and used for supplying air to the data center, and a hot air return valve communicated with the data center; the main controller is used for acquiring the indoor temperature acquired by the indoor temperature acquisition device, controlling the air supply temperature of the direct refrigeration mechanism and/or controlling the air supply temperature of the air conditioner according to the indoor temperature, and controlling the opening degrees of the air supply valve and the hot air return valve. The data center comprises at least one data center room and the refrigeration system. The invention automatically controls the air conditioner and the direct refrigerating mechanism according to the indoor and outdoor temperature, thereby saving more energy and space.

Description

Refrigeration system and data center
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a refrigeration system and a data center.
Background
With the advent of the big data era, the scale of a data center is getting larger and larger, the Power density of a single cabinet server is also rapidly increasing, more refrigerating capacity is needed to guarantee the environmental requirements of the data center, which brings huge Power consumption, increases huge cost, is not beneficial to energy saving, and also increases the Power Usage efficiency value. The traditional refrigeration mode of a large-scale data center usually adopts mechanical refrigeration, so that the energy consumption is high, and the occupied space is large.
Disclosure of Invention
In view of this, the invention provides a refrigeration system and a data center, and aims to solve the problems that a refrigeration device of the data center in the prior art is high in energy consumption and large in occupied space.
The embodiment of the invention provides a refrigeration system, which is suitable for refrigerating a data center and comprises a direct evaporation refrigeration device, an air conditioner for providing cold air for the data center, an indoor temperature acquisition device arranged in the data center and a main controller;
the direct evaporation refrigerating device comprises a direct refrigerating mechanism arranged on the roof, an air supply valve communicated with the direct refrigerating mechanism and a hot air return valve communicated with the data center;
the main controller is used for acquiring the indoor temperature acquired by the indoor temperature acquisition device, controlling the air supply temperature of the direct refrigeration mechanism and/or controlling the air supply temperature of the air conditioner according to the indoor temperature, and controlling the opening of an air supply valve and a hot air return valve.
Optionally, the refrigeration system further comprises an outdoor temperature acquisition device;
the direct evaporative cooling device also comprises a hot air exhaust valve and an outdoor air exhaust valve which are respectively communicated with the hot air return valve; the hot air exhaust valve is communicated with an air inlet of the direct refrigeration mechanism;
the main controller is also used for acquiring the outdoor temperature acquired by the outdoor temperature acquisition device, controlling the opening degrees of the hot air exhaust valve and the outdoor air exhaust valve according to the outdoor temperature and controlling the air supply temperature of the direct refrigeration mechanism;
when the outdoor temperature acquired by the main controller is lower than a first preset temperature, the main controller increases the opening of the hot air exhaust valve so that hot air of the hot air exhaust valve enters the direct refrigeration mechanism;
the main control unit obtains when outdoor temperature is greater than the second and predetermines the temperature, main control unit control closes the hot-air exhaust valve to the control increase the aperture of outdoor air exhaust valve.
Optionally, the direct refrigeration mechanism comprises: a refrigeration cavity structure, a filtering structure, a direct evaporative cooler fan and a fan cavity structure;
an air inlet is formed in the first side face of the refrigerating cavity structure, the filtering structure is arranged on the second side face of the refrigerating cavity structure, and the second side face of the refrigerating cavity structure is connected with the first side face of the fan cavity structure through the filtering structure; a cooling air supply outlet is arranged on the second side surface of the fan cavity structure and is communicated with the air supply valve; the direct evaporative cooler fan is fixed inside the fan cavity structure.
Optionally, the direct cooling mechanism further includes: a water spray system; the water spraying system is fixed inside the refrigeration cavity structure;
the master controller is further configured to: and when the outdoor temperature is higher than a second preset temperature, controlling the direct refrigeration mechanism to start the water spraying system.
Optionally, the refrigeration system further comprises: the suspended ceiling air return channel is arranged at the top of the data center;
the air inlet end of the ceiling air return channel is provided with a ceiling fan for sucking hot air in the data center into the ceiling air return channel, and the air outlet end of the ceiling air return channel is communicated with the air inlet end of the air conditioner or the outside;
the main controller is specifically used for controlling the air supply temperature of the air conditioner when the indoor temperature is higher than a third preset temperature, increasing the wind power of the ceiling fan, and increasing the opening degrees of the air supply valve, the hot air return valve and the ceiling return valve.
Optionally, hot channel air inlet valves are respectively arranged on the ceiling return air channel and on two sides of the ceiling fan;
the main controller is also used for increasing the opening degree of the hot channel air inlet valve when the indoor temperature is higher than a first preset temperature.
Optionally, the air supply valve, the hot air return valve and the air conditioner are correspondingly provided with at least one group, and each group of the air supply valve, the hot air return valve and the air conditioner is correspondingly communicated with the data center on the layer;
the master controller is further configured to: and acquiring the load rate of operating equipment in each data center, controlling the air supply temperature of the air conditioner on the corresponding layer according to the load rate, and controlling the opening degrees of the air supply valve and the hot air return valve on the corresponding layer.
A second aspect of an embodiment of the present invention provides a data center comprising at least one floor of data center rooms, further comprising the refrigeration system of any one of the embodiments provided in the first aspect;
the data center room comprises server cabinet groups which are arranged in parallel, and a heat channel is formed between two server cabinets in the server cabinet groups;
and the main controller of the refrigerating system controls the air supply temperature of at least one of an air conditioner and a direct evaporation refrigerating device of the refrigerating system and controls the air exhaust amount of the direct evaporation refrigerating device according to the indoor temperature or the outdoor temperature.
Optionally, the data center further includes a gas transmission channel and a gas exhaust channel;
the air inlet of the air transmission channel is communicated with the air outlet of the direct refrigerating mechanism; the air outlet of the air transmission channel is positioned in the data center chamber; the air supply valve is arranged on the air transmission channel;
the air inlet of the exhaust channel is communicated with the data center chamber, and the air outlet of the exhaust channel is used for being communicated with the outside; the hot air return valve is arranged on the exhaust passage.
Optionally, the air conditioner is a precision air conditioner and/or an inter-column refrigeration air conditioner arranged between each column of server cabinet groups in the data center;
the precision air conditioner is arranged in an air conditioning room positioned outside the data center room;
the gas transmission channel and the exhaust channel are arranged in the air-conditioning room, or are arranged in the wall of the data center, or one is arranged in the air-conditioning room, and the other is arranged in the wall of the data center.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the main controller can control the air supply temperature of the air conditioner and/or the direct refrigerating mechanism according to the indoor temperature and control the opening degrees of the air supply valve and the hot air return valve, so that the air supply quantity and the air exhaust quantity can be automatically adjusted according to the indoor temperature, the refrigerating mode is more intelligent, and the refrigeration is more energy-saving; meanwhile, the direct evaporation refrigerating device and the air conditioner can work independently, so that the refrigerating reliability is improved, and the PUE value is effectively reduced; in addition, the direct refrigeration mechanism is arranged on the ceiling, cold air is downward, hot air is upward, resistance of airflow is reduced, refrigeration speed is improved, and occupied space is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a first schematic diagram of a data center architecture according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a direct refrigeration mechanism according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a data center according to an embodiment of the present invention;
FIG. 4 is a top view of a data center room provided by an embodiment of the present invention;
FIG. 5 is a top view of another data center room provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a data center provided in the embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, connections of devices, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, the refrigeration system provided in the embodiment of the present invention is suitable for a high-density data center, and specifically includes: the system comprises a direct evaporation refrigerating device, air conditioners arranged in data centers of all layers, an indoor temperature acquisition device arranged in the data centers and a main controller. The position of the indoor temperature acquisition device is not limited in this embodiment, and the indoor temperature acquisition device can be a wall or a corner around the data center, or can be closely adjacent to each column of server cabinet groups in the data center; the number of the indoor temperature collecting devices is not limited in this embodiment, and may be one or more, as long as the current temperature information can be accurately collected.
The direct evaporation refrigerating device comprises a direct refrigerating mechanism arranged on the ceiling, an air supply valve 110 communicated with the direct refrigerating mechanism, and a hot air exhaust valve 120 communicated with the data center.
Specifically, the main controller obtains the indoor temperature collected by the indoor temperature collecting device, controls the air supply temperature of the air conditioner and/or the direct refrigeration mechanism according to the indoor temperature, controls the opening degrees of the air supply valve 110 and the hot air return valve 120, accelerates the refrigeration speed, and realizes the rapid cooling of the data center.
In specific application, the air conditioner can independently send cold air into the data center through a fan per se, the direct evaporation refrigerating device can also independently work, the direct refrigerating mechanism 130 can refrigerate external air flow or directly introduce the external air flow into the data center, and the hot air return valve 120 discharges hot air flow in the data center to the outside; the air conditioner and the direct evaporation refrigerating device in the embodiment work independently, so that the problem that one path of refrigerating device breaks down and the other path of refrigerating device can maintain normal ambient temperature is solved, the reliability of the refrigerating environment of the data center is improved, and the probability of the fault of insufficient refrigeration is reduced.
In the refrigeration system, the direct refrigeration mechanism 130 is arranged on the ceiling, cold air is downward, hot air is upward, so that the resistance of airflow is reduced, the refrigeration speed is improved, and meanwhile, the occupied space is saved; the direct evaporation refrigerating device and the air conditioner can work independently, so that the refrigerating reliability is improved, and the PUE value is effectively reduced; meanwhile, the main controller can control the air supply temperature of the air conditioner according to the indoor temperature and control the opening degrees of the air supply valve 110 and the hot air return valve 120, so that the air supply quantity and the air exhaust quantity can be automatically adjusted according to the indoor and outdoor temperatures, the refrigeration mode is more intelligent, and the refrigeration is more energy-saving.
Referring to fig. 1, in one embodiment, the refrigeration system further includes an outdoor temperature acquisition device; the direct evaporative cooling device further includes a hot air exhaust valve 140 and an outdoor air exhaust valve 150 respectively communicated with the hot air return valve 120; the hot air exhaust valve 140 is communicated with the air inlet of the direct refrigeration mechanism.
The main controller is also used for acquiring the outdoor temperature acquired by the outdoor temperature acquisition device, controlling the opening degrees of the hot air exhaust valve 140 and the outdoor air exhaust valve 150 according to the outdoor temperature, and controlling the air supply temperature of the direct refrigeration mechanism.
When the outdoor temperature acquired by the main controller is lower than the first preset temperature, the main controller increases the opening of the hot air exhaust valve 140 so that the hot air of the hot air exhaust valve 140 enters the refrigeration mechanism. For example, the temperature in winter is too low, in order to prevent condensation from occurring in the machine room, the direct evaporation refrigerating device cannot directly send cold air into the data center, at the moment, the main controller controls the opening of the hot air exhaust valve 140 to be increased, hot air of the hot air exhaust valve 140 directly enters the direct refrigerating mechanism, the hot air is mixed with the current cold air in the direct refrigerating mechanism and then enters the data center through the air supply valve 110, the requirement of the machine room environment is met, and the refrigerating efficiency of the direct evaporation refrigerating device is improved.
When the outdoor temperature acquired by the main controller is higher than the second preset temperature, the main controller controls to close the hot air exhaust valve 140 and to increase the opening of the outdoor air exhaust valve 150. For example, when the temperature is high in summer, the main controller may control the hot air exhaust valve 140 to close, so as to prevent the hot air exhausted from the data center from entering the direct cooling mechanism 130, increase the opening of the outdoor air exhaust valve 15, and exhaust the hot air in the data center to the outside.
In one embodiment, referring to fig. 2, the direct refrigeration mechanism 130 includes: a refrigeration cavity structure 131, a filter structure 133, a direct evaporative cooler fan 134, and a fan cavity structure 135. An air inlet 1311 is arranged on the first side surface of the refrigeration cavity structure 131, a filtering structure 133 is arranged on the second side surface, and the second side surface of the refrigeration cavity structure 131 is connected with the first side surface of the fan cavity structure 135 through the filtering structure 133; a cooling air supply outlet 1351 is formed in the second side face of the fan cavity structure 135, and the cooling air supply outlet 1351 is connected with an air supply valve 110 of the data center through a pipeline; the direct evaporative cooler fan 134 is secured within the fan cavity structure 135.
Outdoor hot air enters the refrigeration cavity structure 131 from the air inlet 1311, then passes through the water baffle and the filter to filter water vapor, and enters the fan cavity structure 135, the direct evaporative cooler fan 134 sends cold air into the preset air transmission channel 150 from the cooling air supply outlet 1351, and the preset air transmission channel 150 introduces the cold air into the data center. At this time, the main controller can control the hot air exhaust valve 140 to close, so as to prevent the hot air flow exhausted from the data center from entering the direct cooling mechanism 130.
Alternatively, the filtering structure 133 of the present embodiment may include a water guard plate and a filter.
In one embodiment, the direct refrigeration mechanism 130 further comprises: a water spray system. The water spray system is fixed inside the refrigeration cavity structure 131. The main controller may also control the direct refrigeration mechanism 130 to turn on the water spray system when the outdoor temperature is greater than a second preset temperature.
Illustratively, the main controller controls the direct cooling mechanism 130 to turn on the water spray system when the summer temperature is high, i.e., the outdoor temperature is greater than the second preset temperature.
Optionally, the water spray system comprises: a water storage device 1321, a water pump 1322, a water circulation line 1323 and a filler 1324. The water storage device 1321 is connected with a water circulation pipeline 1323; the water pump 1322 is connected with a water circulation pipeline 1323; the water pump 1322 sprays the water in the water storage device 1321 onto the filler 1324 through the water circulation pipe 1323; the outdoor air enters the fan cavity structure 135 through the natural wind inlet 1311, the filler 1324 and the filter structure 133 in sequence. In practical application, the main controller can control whether the water spraying system is started or not according to the outdoor temperature, the water spraying system is started when the temperature is high, and the water spraying system is closed when the temperature is low, so that the introduction of natural fresh air is realized, and the refrigeration of the data center is more energy-saving.
In one embodiment, referring to fig. 1, the refrigeration system further comprises: and the suspended ceiling air return channel is arranged at the top of each layer of data center. The suspended ceiling air return channel is arranged at the top of each layer of data center, hot air flow rises and is directly discharged, a floor does not need to be raised, and space is saved.
The ceiling return duct includes a return duct structure 510, at least four hot duct exhaust valves 520, and at least two hot duct ceiling fans 530. The bottom surface of the return air channel structure 510 is provided with at least two hot air inlet openings, each hot channel ceiling fan 530 is arranged at the corresponding hot air inlet opening, and the two sides of each hot channel ceiling fan 530 are provided with hot channel exhaust valves 520.
Specifically, the main controller can also control the air supply temperature of the precise air conditioner 200 and/or the inter-row refrigeration air conditioner 300 on the corresponding layer when the indoor temperature is higher than the third preset temperature, and increase the wind power of the hot channel ceiling fan 530 on the corresponding layer, so as to accelerate high-temperature discharge, overcome the refrigeration problem of a high-power machine room, enable the refrigeration system to automatically adjust the rotating speed according to the heat load, simultaneously increase the opening degrees of the air supply valve 110, the hot air return valve 120 and the hot channel exhaust valve 520 on the corresponding layer, and discharge the indoor hot air from the two sides of the return air channel structure 510.
Optionally, the ceiling return air duct further comprises: ceiling return valves 540 disposed on either side of the return air channel structure 510. The main controller can also increase the opening degree of the ceiling return air valve of the corresponding layer when the indoor temperature is higher than the third preset temperature, so that indoor hot air is discharged from the two sides of the return air channel structure 510.
For example, referring to fig. 3, when the data center of the layer a fails, the indoor temperature of the data center of the layer a rises, and when the indoor temperature is higher than a third preset temperature, the main controller controls the ceiling return valve a540, the hot aisle exhaust valve a520 and the hot air return valve a120 of the data center of the layer a to increase the opening degree, and controls the hot aisle ceiling fan a530 to increase the wind power and accelerate the discharge of hot air; when the data center on the A layer normally operates, the main controller controls the ceiling return air valve A540, the hot channel exhaust valve A520 and the hot air return air valve A120 to reduce the opening degree, and controls the hot channel ceiling fan A530 to reduce the wind power, so that the energy conservation is realized. If hot aisle ceiling fan A530 breaks down, hot aisle exhaust valve A520 can help the hot gas flow to discharge, can not cause the heat to pile up because of hot aisle ceiling fan A530 trouble.
In one embodiment, the master controller is further operable to: and acquiring the load rate of operating equipment in each data center, controlling the air supply temperature of the precision air conditioner 200 and/or the inter-row refrigeration air conditioner 300 of the corresponding layer according to the load rate, and controlling the opening degrees of the air supply valve 110 and the hot air return valve 120 of the corresponding layer.
Specifically, the main controller obtains the load rates of the server cabinet groups in each layer of data center, when the load rates of two or more layers of data centers are different, for example, the load racking rate of the server cabinet groups of the data center at the layer a data center is 100%, the load racking rate of the server cabinet groups of the data center at the layer B data center is only 60%, the calorific value of the data center at the layer B data center is smaller than the calorific value of the data center at the layer a data center at the moment, the indoor temperatures of the data center at the layer a data center and the data center at the layer B data center are transmitted to the main controller, the main controller increases the air supply amount of the precise air conditioner 200 and/or the inter-row refrigeration air conditioner 300 at the data center at the layer a data center and reduces the air supply temperature, increases the opening degrees of the inter-row air supply; meanwhile, the air supply volume of the precision air conditioner 200 and/or the inter-row cooling air conditioner 300 in the B-layer data center is reduced, and the opening degree of the interlayer air supply valve B110 in the B-layer data center is reduced.
For example, the operation flow of the refrigeration system of the present embodiment is described with reference to fig. 3 and 4. Referring to fig. 3 and 4, the refrigeration system can be applied to two-layer data centers for refrigeration, namely, a data center at a layer and a data center at a layer B.
Air circuit of the layer a precision air conditioner 200: after heat exchange, the precision air conditioner 200 sends cold air into the data center room through the fan 210, the cold air passes through the server cabinet group, hot air flows enter the hot channel 600, most of the hot air flows in the hot channel 600 are quickly discharged into the layer a return air channel structure a510 by the hot channel ceiling fan a530, and the other part of the hot air flows into the layer a return air channel structure a510 through the hot channel exhaust valve a 520. The hot air in the layer-A return air channel structure A510 enters the layer-A air-conditioned room through the ceiling return air valve A540, and the hot air return air valve A120 discharges the hot air in the layer-A air-conditioned room to the outside.
Air loop of layer A direct evaporation refrigerating device: the direct refrigeration mechanism 130, the hot air exhaust valve 140 and the outdoor air exhaust valve 150 are placed on the top of a large-scale data center, space is not occupied, outdoor air enters the refrigeration cavity structure 131 from 4 directions through the natural air inlet 1311, the temperature of natural air is reduced after the natural air passes through the filler 1324 of the water spraying system, excessive moisture and impurities are removed through the water baffle and the filter and then enter the fan cavity structure 135, cold air enters the A-layer data center room through the cooling air inlet 1351 and the interlayer air supply valve A110 under the driving of the direct evaporative cooler fan 134, and the hot air is brought into the hot channel 600 through the server cabinet group. The hot air in the hot channel 600 enters the layer A air-conditioned room through the ceiling return channel, and the hot air return valve A120 discharges the hot air in the layer A air-conditioned room to the outside. The temperature of cold air fed by the direct evaporation refrigerating device can be about 1-2 ℃ higher than the temperature of a local wet bulb.
The air circuit of the precision air conditioner 200 in the data center of the layer B and the air circuit of the direct evaporation refrigerating device are consistent with the layer A, and the description is omitted here.
In this embodiment, the number of data center layers applicable to the refrigeration system is not limited, and may be one layer or multiple layers, and if the number of data center layers exceeds two, the setting of each device in the refrigeration systems of the remaining layers refers to the data center structure in the layer B in fig. 3 or the data center structure in the layer B in fig. 6.
In the above embodiment, the direct cooling mechanism 130, the hot air exhaust valve 140 and the outdoor air exhaust valve 150 are disposed on the ceiling, with the cold air downward and the hot air upward, which is beneficial to reducing the resistance of the air flow, improving the cooling speed, and saving a large amount of space; the direct evaporation refrigerating device and the precision air conditioner 200 and/or the inter-row refrigerating air conditioner 300 can work independently, so that the refrigerating reliability is improved, and the PUE value is effectively reduced; meanwhile, the main controller may control the opening degrees of the hot air exhaust valve 140 and the outdoor air exhaust valve 150 according to the outdoor temperature, and control the air supply temperature of the direct refrigeration mechanism 130, or control the air supply temperature of the precision air conditioner 200 and/or the inter-row refrigeration air conditioner 300 of the corresponding layer according to the indoor temperature, and control the opening degrees of the air supply valve 110 and the hot air return valve 120 of the corresponding layer, so as to accelerate the discharge of hot air flow, accelerate the refrigeration speed, improve the refrigeration efficiency, simultaneously make the refrigeration more energy-saving, and effectively reduce the PUE value.
Example two
The embodiment provides a data center comprising at least one data center room 700 and an air conditioning room 800, and further comprising any one of the refrigeration systems provided in the first embodiment, which has the advantages of the refrigeration system. The precision air conditioner 200 of the refrigerating system is disposed in the air conditioning room 800 of the corresponding floor.
The data center room 700 includes a server cabinet group 710 disposed in parallel, and a hot aisle 600 is formed between two server cabinets in the server cabinet group 710.
The main controller of the refrigerating system controls the air supply temperature of at least one of the precision air conditioner 200 and/or the inter-row refrigerating air conditioner 300 and the direct evaporation refrigerating device of the refrigerating system according to the indoor temperature or the outdoor temperature, and controls the air exhaust amount of the direct evaporation refrigerating device.
Optionally, the multi-tier data center further includes: a gas delivery passage 910 and a gas exhaust passage 920. The air delivery passage 910 and the air exhaust passage 920 are both disposed in the air-conditioning room 800, or both disposed in the wall of the multi-tiered data center, or one disposed in the air-conditioning room 800 and the other disposed in the wall of the multi-tiered data center.
For example, referring to fig. 1, 3 and 4, the refrigeration system includes the precision air conditioners 200 disposed in each floor of the data center, the main units 220 of the precision air conditioners 200 are disposed in the air conditioning room 800, and the fans 210 of the precision air conditioners 200 are disposed at the vents between the air conditioning room 800 and the data center room 700.
In another embodiment, referring to fig. 5 and 6, the refrigeration system includes intercolumn refrigerated air conditioners 300 disposed between columns of server cabinet groups in each tier of data centers. The air transmission channel 910 and the air exhaust channel 920 are arranged in the wall of the multilayer data center 210, the air conditioning room 800 is not needed, and a large amount of space is saved; meanwhile, the ceiling return valve 540 of the ceiling return air channel is directly connected with the exhaust channel 920, and the interlayer return air valve 120 is not needed.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The refrigerating system is suitable for refrigerating a data center and is characterized by comprising a direct evaporation refrigerating device, an air conditioner for providing cold air for the data center, an indoor temperature acquisition device arranged in the data center and a main controller;
the direct evaporation refrigerating device comprises a direct refrigerating mechanism arranged on the roof, a server cabinet group area, an air supply valve communicated with the direct refrigerating mechanism and a hot air return valve communicated with the data center;
the main controller is used for acquiring the indoor temperature acquired by the indoor temperature acquisition device, controlling the air supply temperature of the direct refrigeration mechanism and/or controlling the air supply temperature of the air conditioner according to the indoor temperature, and controlling the opening of an air supply valve and a hot air return valve;
the refrigeration system further includes: the ceiling air return channel is arranged at the top of the data center and used for discharging hot air of the hot channel, and comprises an air return channel structure, a hot channel exhaust valve and a hot channel ceiling fan; the hot channel is formed between two server cabinets in the server cabinet group;
the data center further comprises: a gas delivery passage and a gas exhaust passage;
the gas transmission channel is communicated with the server cabinet group area and the direct refrigeration mechanism; the air supply valve is arranged on the air transmission channel, and the hot air return valve is arranged on the exhaust channel;
the air transmission channel and the air exhaust channel are arranged in the wall of the data center, or one air transmission channel and the other air exhaust channel are arranged in an air conditioning room and the other air transmission channel and the other air exhaust channel are arranged in the wall of the data center.
2. The refrigerant system as set forth in claim 1, further including an outdoor temperature pickup device;
the direct evaporative cooling device also comprises a hot air exhaust valve and an outdoor air exhaust valve which are respectively communicated with the hot air return valve; the hot air exhaust valve is communicated with an air inlet of the direct refrigeration mechanism;
the main controller is also used for acquiring the outdoor temperature acquired by the outdoor temperature acquisition device, controlling the opening degrees of the hot air exhaust valve and the outdoor air exhaust valve according to the outdoor temperature and controlling the air supply temperature of the direct refrigeration mechanism;
when the outdoor temperature acquired by the main controller is lower than a first preset temperature, the main controller increases the opening of the hot air exhaust valve so that hot air of the hot air exhaust valve enters the direct refrigeration mechanism;
the main control unit obtains when outdoor temperature is greater than the second and predetermines the temperature, main control unit control closes the hot-air exhaust valve to the control increase the aperture of outdoor air exhaust valve.
3. The refrigeration system of claim 2 wherein said direct refrigeration mechanism comprises: a refrigeration cavity structure, a filtering structure, a direct evaporative cooler fan and a fan cavity structure;
an air inlet is formed in the first side face of the refrigerating cavity structure, the filtering structure is arranged on the second side face of the refrigerating cavity structure, and the second side face of the refrigerating cavity structure is connected with the first side face of the fan cavity structure through the filtering structure; a cooling air supply outlet is arranged on the second side surface of the fan cavity structure and is communicated with the air supply valve; the direct evaporative cooler fan is fixed inside the fan cavity structure.
4. The refrigeration system of claim 3 wherein said direct refrigeration mechanism further comprises: a water spray system; the water spraying system is fixed inside the refrigeration cavity structure;
the master controller is further configured to: and when the outdoor temperature is higher than a second preset temperature, controlling the direct refrigeration mechanism to start the water spraying system.
5. The refrigeration system as claimed in claim 1, wherein the air inlet end of the ceiling return air channel is provided with a ceiling fan for sucking hot air in the data center into the ceiling return air channel, and the air outlet end of the ceiling return air channel is communicated with the air inlet end of the air conditioner or the outside;
the main controller is specifically used for controlling the air supply temperature of the air conditioner when the indoor temperature is higher than a third preset temperature, increasing the wind power of the ceiling fan, and increasing the opening degrees of the air supply valve, the hot air return valve and the ceiling return valve.
6. The refrigeration system as recited in claim 5 wherein said ceiling return duct has hot duct inlet valves on each side of said ceiling fan;
the main controller is also used for increasing the opening degree of the hot channel air inlet valve when the indoor temperature is higher than a first preset temperature.
7. The refrigeration system according to any one of claims 1 to 6, wherein said supply valve, said hot air return valve and said air conditioner are provided in at least one group in correspondence, each group of said supply valve, said hot air return valve and said air conditioner being in communication with one layer of said data center;
the master controller is further configured to: and acquiring the load rate of operating equipment in each data center, controlling the air supply temperature of the air conditioner on the corresponding layer according to the load rate, and controlling the opening degrees of the air supply valve and the hot air return valve on the corresponding layer.
8. A data center comprising at least one floor of data center rooms, further comprising a refrigeration system according to any one of claims 1 to 7;
the data center room comprises server cabinet groups which are arranged in parallel, and a heat channel is formed between two server cabinets in the server cabinet groups;
and the main controller of the refrigerating system controls the air supply temperature of at least one of an air conditioner and a direct evaporation refrigerating device of the refrigerating system and controls the air exhaust amount of the direct evaporation refrigerating device according to the indoor temperature or the outdoor temperature.
9. The data center of claim 8, wherein the air conditioner is a precision air conditioner and/or an inter-column cooling air conditioner disposed between each column of server cabinet groups in the data center;
the precision air conditioner is arranged in an air conditioning room outside the data center room.
CN201910773882.8A 2019-08-21 2019-08-21 Refrigeration system and data center Active CN110691492B (en)

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