Floor air supply device and control method thereof

Abstract

The invention discloses a floor air supply device and a control method thereof.The floor air supply device comprises a first grating used for adjusting the ventilation area and a second grating used for adjusting the ventilation angle; the first grating and the second grating are stacked so that cold air can be supplied according to the angle set by the second grating after passing through the first grating. By adjusting the air supply area of the device, on-demand supply of heat dissipation cooling capacity at different positions under the air supply mode of the data center air conditioner floor is achieved; by adjusting the air supply angle of the device, the effective air supply amount in the vertical height direction of the rack of the data center is increased, uniform cooling of different parts of the upper part, the middle part and the lower part of the rack is realized, and local hot spots of the rack are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of data center cooling systems, and in particular to a floor air supply device and a control method thereof. Background Art

[0002] Floor air supply is one of the main forms of air supply for air conditioning in data centers. This air supply method uses precision air conditioners to deliver cold air into the space below the raised floor. This space forms a large static pressure chamber, and then the cold air is delivered to the cold channel side of the IT equipment rack through the perforated floor. The cold air flows through the IT equipment rack to cool the server and other equipment. The hot air after heat exchange forms a hot channel on the other side of the rack and returns to the precision air conditioner in the form of return air. The return air is cooled after heat exchange with the refrigerant and is delivered to the raised floor again, thus completing a cold air cycle.

[0003] The main problems facing floor air supply in data centers are as follows:

[0004] First, due to the problem of uniform air supply design of floor ventilation, the heat dissipation of cabinets near air conditioners is easily deteriorated, resulting in local high temperature points; second, it is impossible to supply air to fixed points on demand, resulting in huge waste of cooling capacity; third, the existing air supply floors mostly adopt perforated plates, which cannot effectively control the air supply direction. Therefore, the effective air supply volume of cold air above the cabinet is small, and due to the low density of hot air, it is easy to gather on the top of the cabinet, which further increases the difficulty of heat dissipation above the cabinet.

[0005] In view of the above problems, the prior art hopes to achieve uniform air supply by reducing the static pressure difference of the air supply through increasing the height of the raised floor, changing the perforation rate of the air supply floor, and setting baffles in the static pressure bin under the floor, thereby improving the cooling efficiency of the air-conditioning cold air. The above approach improves the uniformity of the floor air supply to a certain extent, but there is still a limited improvement in the uniformity of the air supply, and it cannot solve the problem of on-demand supply of cooling capacity and low effective air supply volume on the top of the rack. Summary of the invention

[0006] The purpose of the present invention is to provide a floor air supply device and a control method thereof to solve the deficiencies in the prior art. By adjusting the air supply area of ​​the device, the on-demand supply of heat dissipation and cooling capacity at different positions in the form of floor air supply for data center air conditioning is realized; by adjusting the air supply angle of the device, uniform cooling of different parts in the vertical direction of the rack is achieved.

[0007] The present invention provides a floor air supply device, which includes a first grille for adjusting the ventilation area and a second grille for adjusting the ventilation angle;

[0008] The first grille is stacked with the second grille so that cold air can pass through the first grille and then be delivered at an angle set by the second grille.

[0009] The floor air supply device as described above, wherein, optionally, the first grille includes a first mounting rod and a second mounting rod;

[0010] A plurality of first grid sheets and second grid sheets are rotatably mounted between the first mounting rod and the second mounting rod;

[0011] The first grid sheet and the second grid sheet are arranged at intervals;

[0012] When the first grid sheet and / or the second grid sheet rotates, the gap between the first grid sheet and the adjacent second grid sheet becomes larger or smaller.

[0013] The floor air supply device as described above, wherein, optionally, further comprises a first driving mechanism and a second driving mechanism;

[0014] The first driving mechanism is in driving connection with the first grid piece to drive the first grid piece to rotate;

[0015] The second driving mechanism is in driving connection with the second grid piece to drive the second grid piece to rotate.

[0016] The floor air supply device as described above, wherein, optionally, the first driving mechanism comprises a first driving member, a first transmission rod and a first transmission assembly; the first driving member is connected to the first transmission rod to drive the first transmission rod to rotate;

[0017] The first grid sheet is connected to the first transmission rod via the first transmission assembly;

[0018] The second driving mechanism comprises a second driving member, a second transmission rod and a second transmission assembly; the second driving member is connected to the second transmission rod to drive the second transmission rod to rotate;

[0019] The second grid piece is connected to the second transmission rod through the second transmission assembly.

[0020] The floor air supply device as described above, wherein, optionally, the first transmission assembly includes a first worm gear and a first worm;

[0021] The first worm is formed on the outer periphery of the first transmission rod, the first worm wheel is meshed with the first worm; the first grid sheet is fixedly connected with the first worm wheel;

[0022] The second transmission assembly includes a second worm gear and a second worm;

[0023] The second worm is formed on the outer periphery of the second transmission rod, the second worm wheel is meshed with the second worm, and the second grid piece is fixedly connected with the second worm wheel.

[0024] The floor air supply device as described above, wherein, optionally, the second grille includes a third transmission assembly and a plurality of guide plates, and the plurality of guide plates can rotate under the action of the third transmission assembly to change the ventilation angle between two adjacent guide plates.

[0025] The floor air supply device as described above, optionally, further comprises a structural frame, and the first grille and the second grille are installed in the structural frame.

[0026] The present invention also proposes a control method for a floor air supply device, which includes:

[0027] Obtaining adjustment control parameters of each floor air supply device; the adjustment control parameters include ventilation area and ventilation angle;

[0028] According to the adjustment control parameters, the ventilation area and ventilation angle of each floor air supply device are adjusted;

[0029] When the cooling capacity required by each cabinet is the same, the farther each floor air supply device is from the air supply outlet of the air conditioner, the smaller the ventilation area.

[0030] In the control method of the floor air supply device as described above, optionally, the method of obtaining the adjustment control parameters of each floor air supply device includes:

[0031] Inputting the first data into a pre-established prediction model to predict temperatures at different locations of the data center;

[0032] The predicted temperatures at different locations in the data center and the second data are input into a pre-established optimized air supply model to obtain the adjustment control parameters.

[0033] The control method of the floor air supply device as described above, wherein, optionally, the second data includes the required cooling capacity of the cabinets and servers corresponding to each floor air supply device;

[0034] The calculation formula for the required cooling capacity of the cabinet and its servers is:

[0035]

[0036] Among them, Q i is the required cooling capacity; U ij is the CPU utilization of the jth server in the i-th cabinet; P ij is the rated power of the jth server in the i-th cabinet.

[0037] The control method of the floor air supply device as described above, wherein, optionally, the first data includes the temperature of each measuring point in the data center room, the location of each measuring point, the cabinet location information, the cabinet load, the air conditioner working state, the return air temperature and the return air volume;

[0038] The second data includes the air supply volume and air supply temperature of the working air conditioner at that time, the distance between each air supply floor device and the working air conditioner closest to it, and the required cooling capacity of the cabinets and servers corresponding to each air supply floor.

[0039] Compared with the prior art, the floor air supply device proposed by the present invention can adjust the ventilation area and air supply angle of the floor air supply device according to the needs, and can dissipate heat in a targeted manner according to the heat dissipation needs of different cabinets and servers by setting a first grille for adjusting the ventilation area and a second grille for adjusting the ventilation angle. This targeted heat dissipation method can be to eliminate the problem of excessively high local temperatures in the data center by only adjusting the ventilation area and air supply angle of each floor air supply device while the working parameters of the air conditioner host remain unchanged, so as to achieve the purpose of supplying cold air to different cabinets and servers, which is conducive to saving energy, improving cooling efficiency, and effectively solving the problem of local heat concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of airflow for cooling a cabinet in the prior art;

[0041] Figure 2 It is a schematic diagram of the flow direction of gas in a data center room in the prior art;

[0042] Figure 3 is a disassembled schematic diagram of the floor air supply device proposed by the present invention;

[0043] Figure 4 is a three-dimensional diagram of a first grid proposed by the present invention;

[0044] Figure 5 is a structural schematic diagram of a first transmission assembly proposed by the present invention;

[0045] Figure 6 is a structural schematic diagram of a second transmission assembly proposed by the present invention;

[0046] Figure 7 is a schematic diagram of the opening of the first grille proposed by the present invention;

[0047] Figure 8 is a three-dimensional diagram of the third transmission assembly proposed by the present invention;

[0048] Fig. 9 is a schematic structural diagram of a second grid proposed by the present invention;

[0049] Fig.10 is a schematic diagram of the installation structure of the third worm and the third worm wheel proposed by the present invention;

[0050] Fig.11 It is a schematic diagram of the flow direction of the floor air supply device proposed by the present invention in a data center room when in use;

[0051] Fig.12 It is a schematic diagram of the control flow of the floor air supply device proposed by the present invention.

[0052] Description of reference numerals:

[0053] 1-first grid, 2-second grid, 3-first driving mechanism, 4-second driving mechanism, 5-structural frame;

[0054] 11-first mounting rod, 12-second mounting rod, 13-first grid sheet, 14-second grid sheet;

[0055] 21-third transmission assembly, 22-guide plate;

[0056] 211 - third driving member, 212 - third worm, 213 - third worm wheel, 214 - third transmission rod;

[0057] 31-first driving member, 32-first transmission rod, 33-first transmission assembly;

[0058] 331-first worm wheel, 332-first worm;

[0059] 41-second driving member, 42-second transmission rod, 43-second transmission assembly;

[0060] 431 - second worm wheel, 432 - second worm. DETAILED DESCRIPTION

[0061] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0062] For questions about background technology, please refer to Figure 1 and Figure 2, since IT equipment racks are generally arranged in multiple columns or rows, the direction of air supply from the air conditioner is generally consistent with the direction of cabinet arrangement. Since the cold air velocity is higher near the air supply outlet of the air conditioner, the air dynamic pressure is large and the static pressure is small here, and the power of floor air supply mainly comes from the static pressure of the cold air, which results in the air supply volume of the cabinet near the air supply outlet of the air conditioner being smaller than that of the cabinet far away from the air conditioner, that is, the air supply volume A1<A8; on the other hand, for return air, the exhaust pressure near the air conditioner is high, that is, negative pressure is generated, so the return air exhaust volume of the cabinet near the air conditioner is greater than that of the cabinet far away from the air conditioner, that is, the return air volume A1>A8. When the hot and cold channels are not closed, the cold and hot air of the supply and return air at A1 are seriously mixed, and the heat dissipation of the cabinet near the air conditioner deteriorates, resulting in local high temperature points. Please refer to Figure 2 Due to the different loads or IT equipment utilization rates of each cabinet, the cooling capacity required by each cabinet is different. For example, at a certain moment, cabinet A5 is in a high-load state while other cabinets have a low load rate or are in a shutdown state. In order to cool cabinet A5, the air conditioner needs to supply air to the entire A-row cabinet, and it is impossible to supply air to a specific point on demand, resulting in a huge waste of cooling capacity. Figure 2 As shown, the cold air from the floor air supply flows through the cabinet from bottom to top. The existing air supply floor mostly adopts the form of a perforated plate, which cannot effectively control the air supply direction. Therefore, the effective air supply volume of the cold air above the cabinet is small, and due to the small density of hot air, it is easy to gather on the upper part of the cabinet, which further increases the difficulty of heat dissipation above the cabinet.

[0063] In view of the above problems, the present invention proposes the following embodiments to solve them:

[0064] Example 1

[0065] Please refer to Figures 3 to 11 This embodiment proposes a floor air supply device, which includes a first grille 1 for adjusting the ventilation area and a second grille 2 for adjusting the ventilation angle; the first grille 1 and the second grille 2 are stacked so that the cold air can pass through the first grille 1 and then be supplied at the angle set by the second grille 2. In specific implementation, the first grille 1 and the second grille 2 are stacked at the outlet of the air supply channel, and the air supply channel is used to connect with the outlet of the precision air conditioner. In actual application, the cold air is discharged from the outlet of the precision air conditioner, and then passes through the first grille 1 and the second grille 2 in sequence after passing through the air supply channel. There are multiple floor air supply devices, and each floor air supply device can adjust the air supply volume and air supply angle according to the cabinets and servers to be adjusted, which is conducive to targeted adjustment of the indoor temperature and achieves the purpose of supplying cold air on demand at cabinets in different positions.

[0066] Please refer to Figure 4In a specific implementation, in order to achieve control over the ventilation area, the first grille 1 includes a first mounting rod 11 and a second mounting rod 12; in a specific implementation, the first mounting rod 11 and the second mounting rod 12 are arranged in parallel, and a plurality of first grid pieces 13 and second grid pieces 14 are rotatably mounted between the first mounting rod 11 and the second mounting rod 12; in a specific implementation, the first grid pieces 13 and the second grid pieces 14 are preferably rectangular thin plates. Of course, according to actual needs or design, they can also be arranged into circular or other irregular shapes, as long as the ventilation area can be changed during the rotation process.

[0067] The first grid pieces 13 and the second grid pieces 14 are arranged at intervals; in practical applications, the number of the first grid pieces 13 and the number of the second grid pieces 14 may be equal or differ by one, so as to space the first grid pieces 13 and the second grid pieces 14 from each other, that is, one second grid piece 14 is arranged between two adjacent first grid pieces 13, and one first grid piece 13 is arranged between two adjacent second grid pieces 14.

[0068] When the first grid sheet 13 and / or the second grid sheet 14 rotates, the gap between the first grid sheet 13 and the adjacent second grid sheet 14 becomes larger or smaller. In a specific implementation, the first grid sheet 13 and the second grid sheet 14 can be driven by one driving mechanism or by two driving mechanisms respectively.

[0069] Please refer to Figure 7 In order to ensure a larger ventilation area adjustment range, when the first grid sheet 13 and the second grid sheet 14 can abut against each other in sequence in a certain state, the ventilation area is 0; in some cases, when the first grid sheet 13 and the second grid sheet 14 are adjusted to the plane where the center lines of the first mounting rod 11 and the second mounting rod 12 are located, the first grid sheet 13 and the second grid sheet 14 abut against each other in sequence. When the first grid sheet 13 and the second grid sheet 14 are set to be perpendicular to the center lines of the first mounting rod 11 and the second mounting rod 12, the ventilation area is the largest.

[0070] Please refer to Figures 4 to 6 In this embodiment, the driving is described by two driving mechanisms, specifically, it also includes a first driving mechanism 3 and a second driving mechanism 4; the first driving mechanism 3 is connected to the first grid sheet 13 to drive the first grid sheet 13 to rotate; the second driving mechanism 4 is connected to the second grid sheet 14 to drive the second grid sheet 14 to rotate. When in use, the size of the ventilation area can be adjusted by controlling the first driving mechanism 3 and the second driving mechanism 4 respectively. In the specific implementation, during the adjustment process, the first grid sheet 13 and the second grid sheet 14 rotate in opposite directions.

[0071] In the specific implementation, in order to ensure that the first grid piece 13 and the second grid piece 14 can be smoothly driven to rotate, the first driving mechanism 3 and the second driving mechanism 4 are further designed in this embodiment. Specifically, the first driving mechanism 3 includes a first driving member 31, a first transmission rod 32 and a first transmission assembly 33; the first driving member 31 is connected to the first transmission rod 32 to drive the first transmission rod 32 to rotate; the first grid piece 13 is connected to the first transmission rod 32 through the first transmission assembly 33. In practical applications, the first driving member 31 can be a motor, such as a servo motor. The second driving mechanism 4 includes a second driving member 41, a second transmission rod 42 and a second transmission assembly 43; the second driving member 41 is connected to the second transmission rod 42 to drive the second transmission rod 42 to rotate; the second grid piece 14 is connected to the second transmission rod 42 through the second transmission assembly 43. In practical applications, the second driving member 41 can be a motor, such as a servo motor.

[0072] In the specific implementation, in order to facilitate the conversion of the rotation of the first transmission rod 32 and the second transmission rod 42 into the rotation of the first grid piece 13 and the second grid piece 14, the present embodiment adopts a worm gear structure. Specifically, the first transmission assembly 33 includes a first worm wheel 331 and a first worm 332; the first worm 332 is formed on the outer periphery of the first transmission rod 32, and the first worm wheel 331 is meshed with the first worm 332; the first grid piece 13 is fixedly connected to the first worm wheel 331. In the specific implementation, the first worm wheel 331 is fixedly connected to one end of the first grid piece 13, and when the first worm wheel 331 rotates, the first grid piece 13 is driven to rotate. Specifically, the first worm 332 can be a part of the first transmission rod 32. That is, a plurality of first worms 332 are provided on the first transmission rod 32, and each first worm 332 corresponds to a first grid piece 13. In the specific implementation, the second transmission assembly 43 includes a second worm wheel 431 and a second worm 432. The second worm 432 is formed on the outer periphery of the second transmission rod 42, and the second worm wheel 431 is meshed with the second worm 432; the second grid piece 14 is fixedly connected to the second worm wheel 431. In a specific implementation, the second worm wheel 431 is fixedly connected to one end of the second grid piece 14, and when the second worm wheel 431 rotates, the second grid piece 14 is driven to rotate. Specifically, the second worm 432 can be a part of the second transmission rod 42. That is, a plurality of second worms 432 are provided on the second transmission rod 42, and each second worm 432 corresponds to a second grid piece 14.

[0073] Please refer to Figures 8 to 10In order to control the angle of air supply, in this embodiment, the second grille 2 is further designed. Specifically, the second grille 2 includes a third transmission assembly 21 and a plurality of guide plates 22. The plurality of guide plates 22 can rotate under the action of the third transmission assembly 21 to change the ventilation angle between two adjacent guide plates 22. In specific implementation, the third transmission assembly 21 includes a third driving member 211, a third worm 212, a third worm wheel 213 and a third transmission rod 214; wherein the third driving member 211 drives the third transmission rod 214 to rotate, and the third worm 212 can be integrally formed with the third transmission rod 214, and the third worm wheel 213 is driven to rotate by the third worm 212, so that the guide plates 22 connected to the third worm wheel 213 rotate. In specific implementation, the plurality of guide plates 22 rotate synchronously to adjust the ventilation angle. In the specific implementation, according to the cooling requirements of the corresponding cabinets and servers, the ventilation angle is adjusted so that more cold air can pass through the locations where the cabinets and servers are located or other locations with higher temperatures, which is conducive to targeted cooling and can improve the heat dissipation efficiency. In the specific implementation, the guide plate 22 is a wing-shaped guide plate. In the specific implementation, weight reduction holes can be set on the guide plate 22. Please refer to Fig.10 By setting the guide plate 22, the wind can be easily delivered to the cabinet, that is, Fig.10 In the IT equipment rack.

[0074] In a specific implementation, in order to facilitate installation and fixing, a structural frame 5 is further included, and the first grille 1 and the second grille 2 are installed in the structural frame. In a specific implementation, the structural frame 5 is a rectangular parallelepiped frame, and the first grille 1 and the second grille 2 are arranged in sequence in the structural frame 5. Specifically, the first grille 1 is located below the second grille 2. When air is supplied, the airflow first passes through the first grille 1 to change the ventilation amount, and then passes through the second grille 2 to adjust the ventilation direction.

[0075] Example 2

[0076] This embodiment is a control method applied to the floor air supply device proposed in Embodiment 1, and the similarities are not repeated here, and only the control method is described below.

[0077] Please refer to Fig.12 This embodiment proposes a control method for a floor air supply device, which includes the following steps:

[0078] S1, obtaining the adjustment control parameters of each floor air supply device; the adjustment control parameters include ventilation area and ventilation angle; in specific implementation, this step includes the following specific steps:

[0079] S11, inputting the first data into a pre-established prediction model to predict the temperature at different locations in the data center; the first data includes the temperature of each measuring point in the data center, the location of each measuring point, the cabinet location information, the cabinet load, the air conditioner working state, the return air temperature and the return air volume. In specific implementation, the first data can be obtained through various data platforms such as data center dynamic environment monitoring. Among them, the cabinet load can also be replaced by CPU utilization.

[0080] The pre-established prediction model is used to predict the temperature at different locations of the data center, so as to facilitate the predicted temperature values ​​at different locations of the data center.

[0081] S12, input the predicted temperature at different locations of the data center and the second data into the pre-established optimized air supply model to obtain the adjustment control parameters. In the specific implementation, the second data includes the air supply volume of the working air conditioner, the air supply temperature, the distance between each air supply floor device and the nearest working air conditioner, and the required cooling capacity of the cabinets and servers corresponding to each air supply floor. The second data can be detected and collected by sensors, wherein the distance between each air supply floor device and the nearest working air conditioner can be a predetermined constant. Combined with the prediction of the indoor temperature and humidity distribution by the previous data center temperature prediction model, and under the constraints of the indoor design temperature and the maximum air supply temperature at the cabinet inlet, a machine learning algorithm such as a neural network is used to establish an optimized air supply model for the floor air supply device, and then the adjustment control parameters of the effective air supply volume corresponding to the required cooling capacity under the current cabinet operating state are calculated, that is, the ventilation area and ventilation angle required by the floor air supply device of the present invention are calculated. Among them, the adjustment control parameters of each floor air supply device can be the same or different, depending on the actual calculation results.

[0082] S2, adjusting the ventilation area and ventilation angle of each floor air supply device according to the adjustment control parameters;

[0083] When the cooling capacity required by each cabinet is the same, the farther each floor air supply device is from the air supply outlet of the air conditioner, the smaller the ventilation area.

[0084] In specific implementation, it also includes optimizing the control of the cold air supply of the air conditioner through the floor air supply device to improve the distribution of the indoor thermal environment of the data center. It can be further linked with the air conditioning group control system to continuously improve the control accuracy through continuous learning and correction of the algorithm model, so as to realize the on-demand supply of the cooling capacity of the data center and the precise control of the terminal heat exchange, so as to achieve the purpose of optimizing the indoor thermal environment distribution of the data center and reducing energy consumption. The second data also includes the required cooling capacity of the cabinets and their servers corresponding to each floor air supply device;

[0085] The cooling capacity required by each cabinet is determined by the heat generated by the IT equipment in the cabinet, and the heat generated by the IT equipment is determined by its working status and load. Therefore, the switch standby status of the server in each cabinet and the utilization data of the server CPU can be monitored through the data acquisition platform to calculate the cooling capacity required by each cabinet. The calculation formula for the cooling capacity required by the cabinet and its server is:

[0086]

[0087] Among them, Q i is the required cooling capacity; U ij is the CPU utilization of the jth server in the i-th cabinet; P ij is the rated power of the jth server in the i-th cabinet.

[0088] To achieve the on-demand supply of cooling required by the i-th cabinet and its j-th server, it is necessary to implement precise control of the effective air supply volume of the floor at the set air supply temperature, and then control the ventilation area and air supply diversion angle of the air supply floor. To achieve the above functions, it is necessary to establish a mapping relationship between the ventilation area of ​​the air supply floor, the air supply diversion angle and the cooling capacity. In practical applications, machine learning algorithms such as neural networks are used to establish an optimized air supply model for floor air supply devices. At the same time, it is also necessary to establish a data center temperature prediction model based on indoor temperature and humidity, indoor cabinet load (or server CPU utilization), air conditioning supply and return air temperature and air supply volume provided by data collection platforms such as the data center dynamic environment platform. Combined with the indoor temperature and humidity design requirements of the data center, the ventilation area of ​​the corresponding floor air supply device and the inclination angle of the guide plate are calculated through the above models and constraints.

[0089] The actual working process of the present invention is described below in conjunction with the embodiments. Figure 1 Take the layout of the cabinets as an example, working condition 1: the load (heat generation) of each cabinet A1-A8 (B1-B8) is the same. Under this working condition, the cooling capacity required by each cabinet A1-A8 is the same. Since the air supply velocity is large near the air supply outlet of the air conditioner, the air supply static pressure at the A1 cabinet is smaller than that at the A8 cabinet. If the air supply floor opening rate (ventilation area) at A1-A8 is consistent, the floor air supply volume at A1-A8 will show a trend of gradually increasing. At this time, the floor air supply device provided by the present invention is applied to gradually reduce the floor air supply area at the A1-A8 cabinets by adjusting the gap area between the grid pieces of the lower adjustable ventilation area grille, and achieve uniform air supply at different positions of the same row of cabinets by increasing the proximal air supply area and reducing the distal air supply area. The adjustment of the ventilation areas of the floors at both ends can be controlled by artificial intelligence algorithms such as machine learning.

[0090] Working condition 2: The loads of cabinets A1-A8 are different or some cabinets are currently in standby or shutdown state. Under this working condition, cabinets at different locations require different cooling capacity, and some cabinets do not even need cooling. At this time, the floor air supply device provided by the present invention can automatically adjust the ventilation area of ​​the air supply floor at different locations by linking the cabinet load and load distribution, and cooperating with artificial intelligence algorithms such as machine learning, to meet the adaptive control requirements of the cooling capacity required by cabinets at different locations.

[0091] Working condition 3: The same cabinet, such as an A5 cabinet, has different loads on the upper, middle and lower servers, so that the cooling capacity required by the upper, middle and lower servers is different. In this case, the floor air supply device provided by the present invention can adjust the angle of the upper variable angle wing-shaped guide grille through a relevant algorithm to increase the effective air supply volume at the corresponding position of the cabinet.

[0092] Through the above-mentioned embodiment 1 and embodiment 2, the present invention realizes the on-demand supply of heat dissipation cooling capacity in different spatial locations of the data center, and the flexible scheduling of floor air supply cooling capacity, and truly achieves the precise matching of efficient heat dissipation of equipment load and on-demand supply of cooling capacity in spatial distribution. It realizes the precise heat dissipation of different locations of the same cabinet in the data center, such as the upper, middle and lower parts. It has a directional air supply function that matches the effective air supply volume of cold air according to the heat dissipation of the server. It solves the problem of uniform air outlet of floor air conditioning in the air supply direction of the data center. It improves the intelligence level of floor air supply control in the data center, realizes the precise control of the balance of cooling capacity supply and demand, and improves the energy efficiency level of the refrigeration air supply link.

[0093] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A floor air supply device, characterized in that: It comprises a first grille (1) for adjusting the ventilation area and a second grille (2) for adjusting the ventilation angle; The first grille (1) and the second grille (2) are stacked so that cold air can pass through the first grille (1) and then be delivered at an angle set by the second grille (2).

2. The floor air supply device according to claim 1, characterized in that: The first grille (1) comprises a first mounting rod (11) and a second mounting rod (12); A plurality of first grid sheets (13) and second grid sheets (14) are rotatably mounted between the first mounting rod (11) and the second mounting rod (12); The first grid sheet (13) and the second grid sheet (14) are arranged at intervals; When the first grid piece (13) and / or the second grid piece (14) rotates, the gap between the first grid piece (13) and the adjacent second grid piece (14) becomes larger or smaller.

3. The floor air supply device according to claim 2, characterized in that: It also includes a first driving mechanism (3) and a second driving mechanism (4); The first driving mechanism (3) is in transmission connection with the first grid piece (13) to drive the first grid piece (13) to rotate; The second driving mechanism (4) is in driving connection with the second grid plate (14) to drive the second grid plate (14) to rotate.

4. The floor air supply device according to claim 3, characterized in that: The first driving mechanism (3) comprises a first driving member (31), a first transmission rod (32) and a first transmission assembly (33); the first driving member (31) is connected to the first transmission rod (32) to drive the first transmission rod (32) to rotate; The first grid sheet (13) is connected to the first transmission rod (32) via the first transmission assembly (33); The second driving mechanism (4) comprises a second driving member (41), a second transmission rod (42) and a second transmission assembly (43); the second driving member (41) is connected to the second transmission rod (42) to drive the second transmission rod (42) to rotate; The second grid sheet (14) is connected to the second transmission rod (42) via the second transmission assembly (43).

5. The floor air supply device according to claim 4, characterized in that: The first transmission assembly (33) comprises a first worm wheel (331) and a first worm (332); The first worm (332) is formed on the outer periphery of the first transmission rod (32), and the first worm wheel (331) is meshed with the first worm (332); the first grid sheet (13) is fixedly connected to the first worm wheel (331); The second transmission assembly (43) comprises a second worm wheel (431) and a second worm (432); The second worm (432) is formed on the outer periphery of the second transmission rod (42), and the second worm wheel (431) is meshed with the second worm (432); and the second grid plate (14) is fixedly connected to the second worm wheel (431).

6. The floor air supply device according to claim 1, characterized in that: The second grille (2) comprises a third transmission assembly (21) and a plurality of guide plates (22); the plurality of guide plates (22) are capable of rotating under the action of the third transmission assembly (21) to change the ventilation angle between two adjacent guide plates (22).

7. The floor air supply device according to any one of claims 1 to 6, characterized in that: It also comprises a structural frame (5), in which the first grille (1) and the second grille (2) are installed.

8. A method for controlling a floor air supply device, characterized in that: include, Obtaining adjustment control parameters of each floor air supply device; the adjustment control parameters include ventilation area and ventilation angle; According to the adjustment control parameters, the ventilation area and ventilation angle of each floor air supply device are adjusted; When the cooling capacity required by each cabinet is the same, the farther each floor air supply device is from the air supply outlet of the air conditioner, the smaller the ventilation area.

9. The control method of the floor air supply device according to claim 8, characterized in that: The method for obtaining the adjustment control parameters of each floor air supply device includes: Inputting the first data into a pre-established prediction model to predict temperatures at different locations of the data center; The predicted temperatures at different locations in the data center and the second data are input into a pre-established optimized air supply model to obtain the adjustment control parameters.

10. The method for controlling a floor air supply device according to claim 9, characterized in that: The second data includes the required cooling capacity of the cabinets and servers corresponding to each floor air supply device; The calculation formula for the required cooling capacity of the cabinet and its servers is: Among them, Q i is the required cooling capacity; U ij is the CPU utilization of the jth server in the i-th cabinet; P ij is the rated power of the jth server in the i-th cabinet.

11. The method for controlling a floor air supply device according to claim 9, characterized in that: The first data includes the temperature of each measuring point in the data center, the location of each measuring point, cabinet location information, cabinet load, air conditioning working status, return air temperature and return air volume; The second data includes the air supply volume and air supply temperature of the working air conditioner at that time, the distance between each air supply floor device and the working air conditioner closest to it, and the required cooling capacity of the cabinets and servers corresponding to each air supply floor.

Images