Layered temperature control system for computer room, and temperature control method

Abstract

Provided in the present disclosure are a layered temperature control system for a computer room, and a temperature control method. Temperature layers are formed by a plurality of temperature measurement points to detect temperature variations at different heights in a computer room; fresh air or air supply by means of an air conditioner achieves an effect similar to that of underfloor air supply, i.e., the temperature progressively rises across the layers from the floor to the ceiling of the computer room; in addition, the relative temperature uniformity within each temperature layer is ensured by means of the temperature difference between the layers, thereby ultimately achieving temperature layering in computer rooms, reducing cold air mixing, improving the refrigeration efficiency, and enabling device layout based on temperature features of each temperature layer.

Description

Computer room tiered temperature control system and temperature control method

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202411400431.7, filed on October 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of computer room temperature control technology, and in particular to a computer room tiered temperature control system and temperature control method. Background Technology

[0004] In existing technical solutions, heat dissipation in the computer room is accomplished by cooling equipment such as computer room air conditioners or fresh air systems. Computer room air conditioners typically use top-mounted or ceiling-mounted air supply, with return air from the side or rear of the indoor unit; underfloor air supply and floor-mounted air supply systems use bottom-mounted air supply and top-mounted return air. However, existing technical solutions have the following drawbacks:

[0005] Because the hot air in the computer room is mainly concentrated in the upper part, the cool air from the top-supply air conditioning unit is directly mixed with the hot air, resulting in reduced cooling efficiency and chaotic airflow. The air supply outlets of the computer room's fresh air system are mostly located in the lower part of the room, while the exhaust outlets are located in the upper part. However, its control mode is still the traditional room-level temperature control, using room temperature to start and stop the airflow, resulting in poor precision in controlling the computer room temperature. Existing bottom-supply air conditioning systems, while more conducive to temperature stratification in terms of air supply, do not actually monitor the temperature of each floor in the computer room; they only provide point-based temperature control.

[0006] Application content

[0007] To address the problems existing in the prior art, this disclosure provides a tiered temperature control system and method for computer rooms.

[0008] This disclosure provides a tiered temperature control system for a computer room, the system comprising:

[0009] A fresh air system, comprising an air intake component and an air exhaust component, wherein the air intake component and the air exhaust component are configured to be installed in a computer room;

[0010] At least one computer room air conditioner is configured to be installed in the computer room;

[0011] Multiple temperature sensors are configured to be disposed in at least two temperature layers formed in the internal space of the computer room in the direction from the floor to the roof of the computer room, and at least one of the temperature sensors is disposed in each of the temperature layers.

[0012] The controller is used to receive the device temperature detected by each of the temperature sensors, and based on the device temperature, control the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer.

[0013] In some embodiments, at least one of the temperature layers is provided with a plurality of temperature sensors, and the plurality of temperature sensors are located at different horizontal positions in the temperature layer.

[0014] In some embodiments, the system further includes:

[0015] A humidity sensor is used to detect the humidity at the air inlet and outlet of the fresh air system and send the data to the controller.

[0016] In some embodiments, the controller is configured to:

[0017] The system receives the device temperature detected by each of the temperature sensors, and controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the device temperature, so that the temperature of the internal space of the computer room gradually increases from the floor to the roof.

[0018] In some embodiments, the controller is configured to:

[0019] When the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to send air to the target temperature layer, which is the first temperature layer adjacent to the floor of the computer room.

[0020] When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is greater than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to turn on the maximum air volume and send air to the target temperature layer, which is the temperature layer with the highest temperature.

[0021] In some embodiments, the controller is configured to:

[0022] If the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, then if the first condition is met, the fresh air system is controlled to deliver air to the target temperature layer.

[0023] If the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, and the first condition is not met, then the computer room air conditioner is controlled to send air to the target temperature layer.

[0024] The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within a preset range.

[0025] In some embodiments, the controller is configured to:

[0026] The humidity sensor receives the humidity from the air inlet and air outlet.

[0027] In some embodiments, the controller is configured to:

[0028] If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

[0029] In some embodiments, the controller is configured to:

[0030] If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply height and air supply angle to supply air to the target temperature layer.

[0031] In some embodiments, the controller is configured to:

[0032] When the pressure difference between the inlet and outlet of the fresh air system is not within the normal range, the air intake and exhaust speeds of the fresh air system shall be controlled.

[0033] This disclosure also provides a temperature control method based on the above-described computer room tiered temperature control system, the method comprising:

[0034] The controller receives the device temperature detected by each of the temperature sensors, and controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the device temperature, so that the temperature of the internal space of the computer room gradually increases from the floor to the roof.

[0035] In some embodiments, controlling the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes:

[0036] When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, the controller controls the fresh air system and / or the computer room air conditioner to send air to the target temperature layer, which is the first temperature layer adjacent to the floor of the computer room.

[0037] When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is greater than a first preset value, the controller controls the fresh air system and / or the computer room air conditioner to turn on the maximum air volume and send air to the target temperature layer, which is the temperature layer with the highest temperature.

[0038] In some embodiments, when the device temperature is higher than a device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, the controller controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer, specifically including:

[0039] If the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, then if the first condition is met, the fresh air system is controlled to deliver air to the target temperature layer.

[0040] If the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, and the first condition is not met, then the computer room air conditioner is controlled to send air to the target temperature layer.

[0041] The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within a preset range.

[0042] In some embodiments, the method further includes:

[0043] The controller receives the humidity from the air inlet and air outlet detected by the humidity sensor.

[0044] In some embodiments, controlling the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes:

[0045] If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

[0046] In some embodiments, controlling the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes:

[0047] If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply height and air supply angle to supply air to the target temperature layer.

[0048] In some embodiments, the method further includes:

[0049] When the pressure difference between the inlet and outlet of the fresh air system is not within the normal range, the controller controls the air intake and exhaust speeds of the fresh air system.

[0050] The computer room tiered temperature control system and method disclosed herein use multiple temperature detection points to form temperature layers, which detect temperature changes at different heights in the computer room. By supplying fresh air or air conditioning, an effect similar to underfloor air supply is created, meaning that the temperature gradually increases from the computer room floor to the ceiling. The temperature difference between each layer ensures a relatively average temperature across all layers, ultimately achieving tiered temperature control in the computer room, reducing cooling mix, improving cooling efficiency, and allowing for equipment layout based on the temperature characteristics of each layer. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 is a top view of a cross-section of a computer room at a certain height according to an embodiment of this disclosure.

[0053] Figure 2 is a schematic diagram of a frontal cross-section of a computer room provided in an embodiment of this disclosure.

[0054] Figure 3 is a flowchart of the temperature control method of the computer room tiered temperature control system provided in the embodiments of this disclosure. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0056] The existing main temperature control solution for computer rooms is an underfloor air supply air conditioning system. Underfloor air supply air conditioning cools the equipment by directly delivering cold air to the air inlet side of the equipment in the cabinet or to the cold aisle at the front of the cabinet. Its main control temperature is the overall temperature of the cold aisle. Moreover, this solution requires the use of enclosed cabinets or physically separated cold aisles to constrain the cold air and reduce the mixing of hot and cold air. For example, in reality, the floor height of a computer room is 2.5 meters or even higher. Since the height of the computer room cabinets is 2.2 meters or less, the actual space with equipment is only the part below 2.2 meters. Due to the loading method of the equipment inside the cabinet, the actual installation position of heat-generating equipment may be even lower. Moreover, some equipment is designed with bottom air intake and top air exhaust. Therefore, the actual environment that needs to be cooled is only the part below 2.2 meters or even lower. In order to achieve more efficient and energy-saving heat dissipation, in the various embodiments of this disclosure, combined with the characteristics of the computer room equipment, a fresh air system combined with a mechanical refrigeration system is used to realize the layered temperature control of the computer room. The main feature is that it utilizes the characteristic that the air density is different at different temperatures (as shown in Table 1) so that the temperature of the computer room gradually increases from the floor to the ceiling, reducing the mixing of hot and cold air, improving the cooling efficiency of the computer room, and achieving energy saving and emission reduction.

[0057] Table 1

[0058] Figure 1 is a top view of a computer room at a certain height according to an embodiment of this disclosure, and Figure 2 is a front view of a computer room according to an embodiment of this disclosure. As shown in Figures 1 and 2, the computer room layered temperature control system provided in this embodiment includes a fresh air system, which includes an air intake component 101 and an exhaust component 102, configured to be installed inside the computer room. At least one computer room air conditioner (two computer room air conditioners 301 and 302 are shown as examples in the figure) is configured to be installed inside the computer room. Equipment cabinets 2 are installed in the internal space of the computer room. In addition, the computer room layered temperature control system also includes multiple temperature sensors, which are configured to be installed in at least two temperature layers formed in the internal space of the computer room from the floor to the roof, and each temperature layer is provided with at least one temperature sensor 4 (in the figure, "·" represents a temperature sensor). As shown in Figure 2, the internal space of the computer room forms four temperature layers from the floor to the roof: L1, L2, L3, and L4. Each temperature layer contains multiple temperature sensors. Specifically, temperature sensors 407, 408, and 409 are located in L1; temperature sensors 410, 411, and 412 are located in L2; temperature sensors 401, 402, 403, and 404 are located in L3; and temperature sensors 405 and 406 are located in L4.

[0059] The computer room tiered temperature control system provided in this embodiment of the disclosure further includes a controller (not shown in the figure), which is used to receive the equipment temperature detected by each of the temperature sensors, and control the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the equipment temperature.

[0060] The aforementioned computer room may include a computer room maintenance structure, computer room air conditioning, a computer room fresh air system, computer room equipment cabinets, temperature and humidity sensors, electrical meter boxes, equipment power detectors, and a computer room air conditioning-fresh air communication system. The air intake components include a filtration system, a fan system, a temperature and humidity detection system, and a pressure detection system; the exhaust components include a fan system, a temperature and humidity detection system, and a pressure detection system. The equipment cabinets contain equipment and temperature sensors. The fresh air system is DC powered, and the computer room air conditioning is AC powered.

[0061] In the data center tiered temperature control system provided in this embodiment, at least one temperature layer, such as each temperature layer, can be equipped with multiple temperature sensors. To better detect the temperature in the temperature layer, the multiple temperature sensors can be located at different horizontal levels within the temperature layer. Alternatively, multiple temperature sensors can be positioned at the same horizontal level within the temperature layer.

[0062] Furthermore, the computer room tiered temperature control system provided in this embodiment may also include a humidity sensor for detecting the humidity at the air inlet and outlet of the fresh air system and sending the data to the controller.

[0063] Temperature and humidity sensors in each temperature zone send the detected temperature and humidity information to the controller. Based on the received temperature and humidity information and pre-set thresholds, the controller individually controls the fresh air system or the server room air conditioner to supply air to the target temperature zone, or simultaneously controls both the fresh air system and the server room air conditioner to work together. The target temperature zone can be any of multiple temperature zones, determined based on the current temperatures of the other temperature zones.

[0064] In some embodiments, the controller is configured to:

[0065] The system receives the device temperature detected by each of the temperature sensors, and controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the device temperature, so that the temperature of the internal space of the computer room gradually increases from the floor to the roof.

[0066] In some embodiments, the controller is configured to:

[0067] When the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to send air to the target temperature layer, which is the first temperature layer adjacent to the floor of the computer room.

[0068] When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is greater than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to turn on the maximum air volume and send air to the target temperature layer, which is the temperature layer with the highest temperature.

[0069] In some embodiments, the controller is configured to:

[0070] If the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, then if the first condition is met, the fresh air system is controlled to deliver air to the target temperature layer.

[0071] If the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, and the first condition is not met, then the computer room air conditioner is controlled to send air to the target temperature layer.

[0072] The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within a preset range.

[0073] In some embodiments, the controller is configured to:

[0074] The humidity sensor receives the humidity from the air inlet and air outlet.

[0075] In some embodiments, the controller is configured to:

[0076] If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

[0077] In some embodiments, the controller is configured to:

[0078] If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply height and air supply angle to supply air to the target temperature layer.

[0079] In some embodiments, the controller is configured to:

[0080] When the pressure difference between the inlet and outlet of the fresh air system is not within the normal range, the air intake and exhaust speeds of the fresh air system shall be controlled.

[0081] The temperature layering method in this embodiment can combine different temperature control points to form a temperature layer, and can arbitrarily combine a certain number of temperature control points to form temperature layers of different heights. In some embodiments, the temperature layer can also be understood as a height layer obtained by dividing the height direction.

[0082] The computer room tiered temperature control system disclosed herein uses multiple temperature detection points to form temperature layers, detecting temperature changes at different heights within the computer room. By supplying fresh air or air conditioning, it creates an effect similar to underfloor ventilation, where the temperature gradually increases from the computer room floor to the ceiling. The temperature difference between each layer ensures relative temperature uniformity, ultimately achieving tiered temperature control in the computer room, reducing cooling mix, improving cooling efficiency, and allowing for equipment layout based on the temperature characteristics of each layer.

[0083] The following describes the temperature control method of the data center tiered temperature control system provided in this disclosure based on the above embodiments, which can be applied to data center temperature regulation. Specifically, the controller receives the equipment temperature detected by each of the temperature sensors, and based on the equipment temperature, controls the fresh air system and / or the data center air conditioner to deliver air to the target temperature layer, so as to realize that the temperature of the internal space of the data center gradually increases from the data center floor to the data center roof.

[0084] The computer room, computer room equipment, computer room equipment cabinet layout, number of computer room air conditioners, and number of computer room fresh air systems in the embodiments are only one application description of the method of the embodiments of this disclosure, and are not limited to one case of the embodiments.

[0085] Before introducing the control method, some parameters need to be defined:

[0086] According to the computer room being divided into n height layers or temperature layers (L1, L2, L3....Ln respectively), Tn is the highest temperature of a certain height layer in the computer room (according to the number of layers, the highest temperatures of each height layer can be T1, T2, T3, T4....Tn), where n is an integer greater than or equal to 1. Tn - x is the temperature of a certain temperature detection point in a certain height layer of the computer room (for example, in layer L1, according to the number of detection points, it can be T1 - 1, T1 - 2....T1 - x), x is an integer greater than or equal to 1, the temperature difference threshold between different temperature layers is △T1, the temperature variance of the jth temperature layer is Ej, the value range of j is from 1 to n, and the variance threshold is Es. The fresh air temperature is Tin, the fresh air humidity is Din, the exhaust air temperature is Tout, the exhaust air humidity is Dout, and the fresh air opening temperature difference is △Twc. The fresh air inlet pressure is Pin, the fresh air outlet pressure is Pout, the pressure difference between the inlet and outlet of the fresh air system is △P, and the normal range of the pressure difference is (P0, Pmax). The temperature coefficient α (α>1), the temperature threshold of the equipment inlet in the computer room is Tsj0, the equipment temperature is Tsc, and the equipment temperature threshold is Tsc0.

[0087] The embodiments of the present disclosure introduce the temperature control method in several working modes.

[0088] I. Normal operation mode

[0089] When the equipment temperature Tsc is higher than the equipment temperature threshold Tsc0 and the ratio of Tsc / Tsc0 is less than α (the first preset value), that is, in the non - overheating (emergency) situation, the controller controls the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer. At this time, the target temperature layer is layer L1, that is, the first temperature layer near the computer room floor. Specifically, the computer room air conditioner supplies air for cooling to layer L1. After continuous cooling, the cooling capacity of the air conditioner is gradually reduced from near the computer room floor to the ceiling, realizing the temperature rising gradually from the lowest at the bottom to the ceiling. The temperature layer variance Ej of each layer < Es, and the temperature fluctuation is small.

[0090] In the above - mentioned normal operation mode, further, when the controller receives the humidity of the inlet and outlet detected by the humidity sensor, when the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than the first preset value, if the first condition is met, the controller controls the fresh air system to supply air to the target temperature layer; if the first condition is not met, the controller controls the computer room air conditioner to supply air to the target temperature layer. The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within the preset range.

[0091] II. Emergency situation mode

[0092] If the equipment temperature Tsc is higher than the equipment temperature threshold Tsc0, and the Tsc / Tsc0 ratio is greater than α (the first preset value), the controller controls the fresh air system and / or the computer room air conditioner to activate the maximum airflow and deliver air to the target temperature layer, which is the temperature layer with the highest temperature. Specifically, the above situation indicates that the computer room equipment is extremely overheated, and there may be extreme situations, such as power outages, air conditioner compressor failures, or fan damage. It is necessary to activate the emergency mode. At this time, the computer room fresh air system communicates with the computer room air conditioner to determine which cooling equipment can be turned on. The air conditioner is turned on first and activated with the maximum airflow. If the air conditioner cannot be turned on or cannot cool down, the fresh air system is turned on with the maximum airflow, and the air delivery angle is adjusted to prioritize cooling the extremely overheated area. After the emergency mode ends, the system returns to the "normal operation mode".

[0093] III. Situations where the temperature difference between adjacent floors is too large

[0094] If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

[0095] Specifically, taking layers L3 and L2 as examples, a temperature difference threshold △T1 is set for each layer. If the difference between the highest temperature T3 of layer L3 (assuming it is the temperature of detection point 403) and the highest temperature T2 of layer L2 (assuming it is the temperature of detection point 410) is greater than △T1, it indicates that the temperature T3 of layer L3 is high and there may be an overheating risk. It is necessary to adjust the air supply of the air conditioner to intervene in the temperature of the layer with excessively high temperature. At this time, the air supply angle of the air conditioner or fan is aimed at layer L3, and the minimum air supply speed is adjusted according to the height. The air supply angle is changed from near to far, and the fan speed is gradually increased from near to far. Then, it is judged again whether the difference between the highest temperature T3 of layer L3 and the highest temperature T2 of layer L2 is less than △T1.

[0096] IV. Large temperature fluctuations in a single temperature layer

[0097] If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply height and air supply angle to supply air to the target temperature layer.

[0098] Specifically, when the temperature difference between adjacent layers is less than the set temperature difference threshold △T1, it is necessary to judge the temperature uniformity of a single layer. For example, the temperature variance is set to Es. By detecting the temperatures of each detection point T401, T402, T403, T404... in layer L3, the temperature variance of layer L3 is calculated as E3. In this embodiment, it is assumed that E3>Es, which indicates that the temperature uniformity of layer L3 is poor and there is a large fluctuation. At this time, the height of the air outlet is adjusted and the air supply angle is changed to sweep the layer L3.

[0099] Figure 3 is a flowchart of the temperature control method of the computer room layered temperature control system provided in this embodiment. According to the characteristics of the computer room, this embodiment defines the height layer of several temperature sensors distributed from the floor upwards in the space as layer L1. The temperatures of the temperature detection points in this layer are T1-1, T1-2...T1-x, with the highest temperature being T1 and the temperature variance being E1. In the space upwards from layer L1, layers L2 to Ln are sequentially determined using the above method. The temperatures of the temperature detection points in each layer are T2-1, T2-2...T2-x to Tn-1, Tn-2...Tn-x, with the highest temperature in each layer being T2 to Tn and the temperature variance being E2 to En. As shown in Figure 3, the method includes:

[0100] ① Detect the equipment temperature Tsc in the computer room, the temperature of each temperature control point in the computer room, and the temperature and humidity of the fresh air system inlet. Determine whether the equipment temperature Tsc is greater than or equal to the equipment temperature threshold Tsc0. If yes, it means that the equipment temperature is high and it is necessary to further determine the degree of equipment overheating and proceed to step ②. If no, it means that the equipment temperature is normal and the air conditioner and fresh air system should be kept on standby.

[0101] ② Determine whether Tsc / Tsc0 is greater than α. If yes, it indicates that the equipment is extremely overheated, and proceed to step ③; if no, it indicates that the equipment temperature is within the set temperature control range, and proceed to step ④.

[0102] ③ Due to extreme overheating of the equipment, emergency cooling may be required. In this case, communication between the fresh air system and the computer room air conditioning system will determine which cooling equipment can be turned on. The air conditioning will be turned on first and operated at maximum airflow. If the air conditioning cannot be turned on or cannot cool the area, the fresh air system will be turned on and operated at maximum airflow, adjusting the air supply angle to cool the overheated area. The emergency situation mentioned includes, but is not limited to, situations affecting the cooling of the computer room such as power outages, cooling system failures, and fresh air system failures.

[0103] ④ Determine whether the fresh air temperature and humidity meet the conditions Tsj0 - Tin > △Twc and Din ∈ (D1, D2). If so, it means that the fresh air opening condition is met at this time, and the fresh air system is started. If not, it means that the fresh air temperature and humidity do not meet the requirements for computer room heat dissipation, and the computer room air conditioner is started. Keep the air supply direction at the L1 layer. At this time, mainly through air supply, the lower layer of air close to the floor of the computer room has a lower temperature. Using the principle that air with different temperatures has different densities, a natural temperature stratification is formed in the computer room. Proceed to step ⑤.

[0104] ⑤ Determine whether the temperature difference between adjacent layers in the computer room meets the condition T(i + 1) - Ti < △T1. If so, it means that from the L1 layer to the Ln layer, the temperature gradually increases while meeting the condition that the temperature difference is less than △T1, forming a hierarchical control of the computer room temperature. The cold and hot air flow organization in the computer room is good, without mixing, and the cooling efficiency is high, which can save air conditioner energy consumption to the greatest extent. Proceed to step ⑥. If not, it means that the temperature difference between a certain adjacent layer is too large, the natural temperature stratification effect is poor, and there is a risk of overheating. At this time, detect the adjacent Li and L(i + 1) layers with a large temperature difference, adjust the height or angle of the air supply outlet to the L(i + 1) layer with a large temperature difference, adjust the minimum air supply wind speed according to the floor height, change the angle of air supply from near to far, and gradually increase the wind speed of the fan from near to far to cool the high-temperature area, and then perform step ⑤ again for judgment. Among them, the value range of i is from 1 to n - 1.

[0105] ⑥ Determine whether the temperature variance of each temperature layer meets the condition Ej < Es. If so, it means that the temperature stratification in the computer room is good and the temperature of each layer is relatively uniform, reaching a stable situation of hierarchical temperature control, that is, the temperature gradually increases from the L1 layer to the Ln layer, and the temperature of each temperature layer is similar. Proceed to step ⑦. If not, it means that the temperature of a certain layer Lj fluctuates greatly. Adjust the height of the air supply outlet, change the angle of air supply and blow on this layer, and then perform step ⑥ again for judgment.

[0106] ⑦ Determine whether the pressure difference between the fresh air inlet and outlet meets the condition △P ∈ (P0, Pmax). If so, it means that the pressure difference in the computer room is within the normal range. If not, adjust the rotation speed of the inlet and exhaust fans of the fresh air system. When the pressure difference exceeds Pmax, increase the rotation speed of the exhaust fan to reduce the pressure difference. When the pressure difference is less than P0, increase the rotation speed of the fresh air inlet fan to increase the pressure difference.

[0107] In the method provided by the embodiment of the present disclosure, a conventional temperature stratification distribution can be realized, that is, the temperature stratification distribution of the computer room temperature from the lowest plane to the highest plane of the computer room, which is the lowest plane temperature in turn, and gradually increases to the highest temperature of the highest plane. It can also realize the regulation of the temperature of a certain layer. When the temperature of the Ln layer does not meet the set temperature requirements, the temperature of a certain layer can be adjusted by adjusting the air supply angle time to achieve temperature stratification regulation. [[ID=十四]]

[0108] The method provided in this disclosure, based on the different air densities at different temperatures, creates a stratified state with temperatures rising from low to high by adjusting the fresh air or lower air supply of the air conditioning system, reducing the mixing of hot and cold air currents and achieving efficient cooling of the computer room. Using the temperature difference control method between adjacent layers, potential overheating hazard layers are identified, and the hazards are eliminated by adjusting the air supply angle and speed, maintaining the temperature stratification. Based on the temperature variance of all temperature control points on each layer, the air supply height, air supply angle, and fan speed are coordinated to achieve relatively uniform temperature on each layer, reducing the mixing of hot and cold air currents in the computer room and stabilizing the temperature stratification.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A tiered temperature control system for a computer room, wherein, The system includes: A fresh air system, comprising an air intake component and an air exhaust component, wherein the air intake component and the air exhaust component are configured to be installed in a computer room; At least one computer room air conditioner is configured to be installed in the computer room; Multiple temperature sensors are configured to be disposed in at least two temperature layers formed in the internal space of the computer room in the direction from the floor to the roof of the computer room, and at least one of the temperature sensors is disposed in each of the temperature layers. The controller is used to receive the device temperature detected by each of the temperature sensors, and based on the device temperature, control the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer.

2. The computer room tiered temperature control system according to claim 1, wherein, At least one of the temperature layers is provided with multiple temperature sensors, and the multiple temperature sensors are located at different horizontal positions in the temperature layer.

3. The computer room tiered temperature control system according to claim 1 or 2, wherein, The system also includes: A humidity sensor is used to detect the humidity at the air inlet and outlet of the fresh air system and send the data to the controller.

4. The computer room tiered temperature control system according to any one of claims 1-3, wherein, The controller is configured to: The system receives the device temperature detected by each of the temperature sensors, and controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the device temperature, so that the temperature of the internal space of the computer room gradually increases from the floor to the roof.

5. The computer room tiered temperature control system according to claim 4, wherein, The controller is configured to: When the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to send air to the target temperature layer, which is the first temperature layer adjacent to the floor of the computer room. When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is greater than a first preset value, the fresh air system and / or the computer room air conditioner are controlled to turn on the maximum air volume and send air to the target temperature layer, which is the temperature layer with the highest temperature.

6. The computer room tiered temperature control system according to claim 5, wherein, The controller is configured to: If the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, then if the first condition is met, the fresh air system is controlled to deliver air to the target temperature layer. If the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, and the first condition is not met, then the computer room air conditioner is controlled to send air to the target temperature layer. The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within a preset range.

7. The computer room tiered temperature control system according to claim 6, wherein, The controller is configured to: The humidity sensor receives the humidity from the air inlet and air outlet.

8. The computer room tiered temperature control system according to any one of claims 4-7, wherein, The controller is configured to: If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

9. The computer room tiered temperature control system according to any one of claims 4-8, wherein, The controller is configured to: If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the fresh air system and / or the computer room air conditioner are controlled to adjust the air supply height and air supply angle to supply air to the target temperature layer.

10. The computer room tiered temperature control system according to any one of claims 4-9, wherein, The controller is configured to: When the pressure difference between the inlet and outlet of the fresh air system is not within the normal range, the air intake and exhaust speeds of the fresh air system shall be controlled.

11. A temperature control method based on the computer room tiered temperature control system as described in any one of claims 1 to 10, wherein, The method includes: The controller receives the device temperature detected by each of the temperature sensors, and controls the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer based on the device temperature, so that the temperature of the internal space of the computer room gradually increases from the floor to the roof.

12. The temperature control method according to claim 11, wherein, The control of the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes: When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, the controller controls the fresh air system and / or the computer room air conditioner to send air to the target temperature layer, which is the first temperature layer adjacent to the floor of the computer room. When the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is greater than a first preset value, the controller controls the fresh air system and / or the computer room air conditioner to turn on the maximum air volume and send air to the target temperature layer, which is the temperature layer with the highest temperature.

13. The temperature control method according to claim 12, wherein, The method, wherein when the device temperature is higher than a device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, involves the controller controlling the fresh air system and / or the computer room air conditioner to deliver air to the target temperature layer, specifically including: If the device temperature is higher than the device temperature threshold and the ratio of the device temperature to the device temperature threshold is less than a first preset value, then if the first condition is met, the fresh air system is controlled to deliver air to the target temperature layer. If the equipment temperature is higher than the equipment temperature threshold and the ratio of the equipment temperature to the equipment temperature threshold is less than a first preset value, and the first condition is not met, then the computer room air conditioner is controlled to send air to the target temperature layer. The first condition includes that the fresh air temperature of the fresh air system is less than the inlet temperature threshold and the fresh air humidity is within a preset range.

14. The temperature control method according to claim 13, wherein, The method further includes: The controller receives the humidity from the air inlet and air outlet detected by the humidity sensor.

15. The temperature control method according to any one of claims 11-14, wherein, The control of the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes: If the difference between the highest temperatures of two adjacent temperature layers is greater than the temperature difference threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply angle and air supply speed to supply air to the target temperature layer, which is the upper temperature layer among the two adjacent temperature layers.

16. The temperature control method according to any one of claims 11-15, wherein, The control of the fresh air system and / or the computer room air conditioner to supply air to the target temperature layer specifically includes: If the temperature variance of multiple device temperatures detected at the target temperature layer is greater than the variance threshold, the controller controls the fresh air system and / or the computer room air conditioner to adjust the air supply height and air supply angle to supply air to the target temperature layer.

17. The temperature control method according to any one of claims 11-16, wherein, The method further includes: When the pressure difference between the inlet and outlet of the fresh air system is not within the normal range, the controller controls the air intake and exhaust speeds of the fresh air system.

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