Machine room environment control system and control method

Abstract

The invention discloses a machine room environment control system and method, and belongs to the technical field of machine room environment control. The frequency conversion control fresh air handling unit is used for introducing outdoor fresh air into the machine room; the temperature and humidity data acquisition mechanism is used for acquiring temperature and humidity data in the server cabinet, in the machine room and outside the machine room in real time and transmitting the data to the intelligent control cabinet; an indoor / outdoor differential pressure sensor; a tunnel fan under the floor; the management server analyzes the current environment condition of the machine room based on the collected data, generates a corresponding control strategy, and achieves the control of each device through the intelligent control cabinet. Control strategies can be automatically adjusted according to indoor and outdoor temperature and humidity, temperature balance of all the cabinets is achieved, and energy consumption of the machine room is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of computer room environment control, and more specifically, to a computer room environment control system and a control method. Background Art

[0002] With the digital transformation and intelligent upgrading of manufacturing enterprises, more and more business processes and data processing rely on efficient server systems. These systems need to run continuously and stably to support the daily operations and decision-making analysis of enterprises. Therefore, the stability and reliability of server systems have become the focus of enterprises. At present, the environmental control of computer rooms basically uses precision air conditioners to control the ambient temperature and humidity. In order to reduce the heat dissipated by the server, the precision air conditioners in the computer room only operate in cooling mode all year round. Even in the sub-zero temperature environment outdoors, the precision air conditioners still operate in cooling mode. Therefore, the energy consumption of precision air conditioners accounts for 50%-70% of the energy consumption of the entire server room. Standard computer room precision air conditioners mostly use under-floor air supply and upper return air in the computer room. However, due to differences in server loads and heat dissipation efficiency in different areas of the computer room, there is a large temperature difference in cabinets in different areas. This temperature difference not only affects the operating efficiency of the server, but may also accelerate the aging of some servers. In addition, since it is impossible to provide relatively consistent ambient temperature and humidity for cabinets in different areas, it is difficult to meet the personalized needs of all servers. Summary of the invention

[0003] An object of the present invention is to provide a computer room environment control system and control method to solve the problem that differences in server load, heat dissipation efficiency, etc. in different areas of the aforementioned computer room result in large temperature differences in cabinets in different areas, affecting the operating efficiency of the servers and accelerating the aging of some servers.

[0004] According to a first aspect of the present invention, there is provided a computer room environment control system, comprising:

[0005] Precision air conditioning, arranged on one side of the machine room, is used to adjust the temperature and humidity in the machine room;

[0006] The variable frequency controlled fresh air unit is arranged on one side outside the machine room and is used to introduce outdoor fresh air into the machine room;

[0007] The temperature and humidity data collection mechanism is used to collect the temperature and humidity data inside the server cabinet, inside the computer room and outside the computer room in real time and transmit it to the intelligent control cabinet;

[0008] Indoor and outdoor pressure difference sensor, used to monitor the difference in air pressure inside and outside the room, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet;

[0009] Underfloor tunnel fans are evenly distributed under the floor of the computer room to deliver cold air into the tunnel under the floor, and then provide cooling air to each server cabinet through the vents on the floor;

[0010] A management server and an intelligent control cabinet, wherein the management server receives data from the temperature and humidity data acquisition mechanism, the data monitored by the indoor and outdoor pressure difference sensor, and the working status information of the precision air conditioner, the variable frequency controlled fresh air unit, and the underfloor tunnel fan, and analyzes the current computer room environmental conditions based on the collected data, and generates corresponding control strategies to realize control of each device through the intelligent control cabinet.

[0011] Optionally, the variable frequency controlled fresh air unit includes a filter, a micro-mist humidification unit, a variable frequency high-pressure fan, an air valve and an air valve actuator; the filter is installed at the air inlet of the variable frequency controlled fresh air unit, and is used to filter the fresh air entering the room from the outdoor; the micro-mist humidification unit is connected to the variable frequency controlled fresh air unit through a pipeline, and is mixed with the fresh air and then sent into the room; the variable frequency high-pressure fan is provided with two groups, which are respectively connected to the air inlet duct and the air outlet duct of the variable frequency controlled fresh air unit; the air valve and the air valve actuator are each provided with two groups, one group of air valves and air valve actuators are installed in the air inlet duct, and the other group of air valves and air valve actuators are installed in the air outlet duct, and the air valve actuator is connected to the intelligent control cabinet through a signal line, receives the instruction of the intelligent control cabinet, and drives the air valve to perform corresponding actions.

[0012] Optionally, the filter includes a stainless steel bracket and a HEPA filter, and the HEPA filter is supported and fixed by the stainless steel bracket.

[0013] Optionally, the variable frequency controlled fresh air unit further comprises a rain cover, and the rain cover is installed at one end of the filter close to the air inlet direction.

[0014] Optionally, the frequency conversion controlled fresh air unit further comprises a metal anti-condensation net, which is installed at the rear section of the micro-mist humidification zone and is used to form condensation on the metal net.

[0015] Optionally, the micro-mist humidification unit includes an ultrasonic micro-mist generator and a water inlet pipeline; the ultrasonic micro-mist generator is tightly connected to the water inlet pipeline through a water inlet, and the water inlet pipeline starts from a water source interface, passes through the filter, and is connected to the water inlet of the ultrasonic micro-mist generator.

[0016] Optionally, the management server also publishes the current environment status of the computer room and the corresponding control strategy to the computer room administrator's desktop through a visual graphical interface.

[0017] Optionally, the intelligent control cabinet includes a data acquisition module, a communication module, a PLC control unit, an electromechanical control module and a human-computer interaction interface; the data acquisition module collects the operating control parameters of the precision air conditioner, temperature and humidity sensor data, and pressure difference sensor data, and provides them to the server and PLC control unit through the network module; the communication module is used to realize data exchange between the internal components of the intelligent control cabinet, as well as communication between the intelligent control cabinet and the server cabinet; the PLC control unit is connected to the data acquisition module, the communication module, and the electromechanical control module through an internal bus or interface, receives data and sends control signals; the electromechanical control module includes a power switch module and a relay control module, which are used for power on and off control of equipment in the computer room; the human-computer interaction interface is connected to the PLC control unit through an internal bus or interface, and is used to receive and display data and status information of the PLC control unit.

[0018] According to a second aspect of the present invention, there is provided a method for controlling a computer room environment using the computer room environment control system, comprising:

[0019] Regulate the temperature and humidity in the machine room through precision air conditioning;

[0020] The fresh air unit is controlled by frequency conversion to introduce the preset speed and flow of outdoor fresh air into the machine room;

[0021] The temperature and humidity data collection mechanism is used to collect the temperature and humidity data inside the server cabinet, inside the computer room and outside the computer room in real time, and transmit these data to the intelligent control cabinet in real time;

[0022] Monitor and record the difference in air pressure inside and outside the room provided by the indoor and outdoor pressure difference sensor, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet;

[0023] Control the underfloor tunnel fan to send cold air into the tunnel under the floor, and provide cooling air to each server cabinet through the vents on the floor;

[0024] The management server receives working status information from the temperature and humidity data collection mechanism, indoor and outdoor pressure difference sensors, precision air conditioners, variable frequency controlled fresh air units, and underfloor tunnel fans. It analyzes the current environmental conditions of the computer room based on the received data, and generates corresponding control strategies based on the analysis results. The control strategies include but are not limited to adjusting the working mode of the precision air conditioner, the operating parameters of the variable frequency controlled fresh air unit, the wind speed or switch status of the underfloor tunnel fan, etc. through the intelligent control cabinet.

[0025] Optionally, after receiving the air volume demand signal transmitted by the intelligent control cabinet, the variable frequency controlled fresh air unit searches for the corresponding five-level air volume adjustment gear in the PLC control unit;

[0026] Automatically adjust the speed of the high-voltage variable-frequency fan to make the fan output air volume reach the air volume value corresponding to the selected gear;

[0027] The actual output air volume of the fan is monitored in real time, and fine-tuned through the feedback mechanism to stabilize the air volume at the required level.

[0028] The computer room environment control system and control method disclosed in the present invention have the following technical effects:

[0029] The frequency conversion control fresh air mechanism in the present invention realizes the effective circulation and regulation of air inside and outside the computer room through the air intake unit and the exhaust unit, providing a stable and comfortable working environment for the computer room. According to the automatic adjustment control strategy of indoor and outdoor temperature and humidity, the power consumption of the precision air conditioning in the computer room is reduced by introducing high-purity outdoor fresh air, and the temperature, humidity and air volume balance control strategy is adopted; the fresh air unit operation status control strategy monitors the indoor and outdoor temperature difference in real time, and adjusts the operating speed of the fresh air supply fan according to this temperature difference. This adjustment is dynamic and periodic, and aims to optimize the fresh air supply according to actual needs while maintaining the stability and energy efficiency of the system. By setting the minimum speed limit and the regulation interval, the strategy also ensures the reliability and response speed of the system;

[0030] The exhaust fan unit can effectively maintain the air quality and pressure balance of the indoor environment and improve the overall comfort and energy efficiency of the computer room by starting up with the fresh air unit, automatically adjusting the operating frequency according to the pressure difference, and setting a specific dynamic control range and rule control value.

[0031] The cold air is transported to the cabinet area with high heat generation through the tunnel fan under the floor, balancing the temperature and humidity of the entire computer room and achieving temperature balance in each cabinet. Through the energy-saving control algorithm of each device in the computer room, the energy consumption of the computer room can be greatly reduced while ensuring that the temperature, humidity and cleanliness of the computer room environment meet the standards;

[0032] The micro-mist humidification operation control strategy uses intelligent monitoring and regulation to flexibly adjust the number of humidification units in operation according to the real-time changes in outdoor humidity conditions and indoor humidity to achieve precise control of indoor humidity;

[0033] The management server publishes the computer room's environmental conditions and control strategies to the administrator's desktop through a visual graphical interface, providing great convenience and efficiency for remote monitoring and management of the computer room.

[0034] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0036] Figure 1 A computer room equipment space layout diagram of a computer room environment control system provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of a frequency conversion control fresh air unit in a computer room environment control system provided by an embodiment of the present invention;

[0038] Figure 3 This is a topological diagram of the intelligent control equipment in the computer room environment control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] In the existing environment, due to differences in server loads and heat dissipation efficiency in different areas of the computer room, there are large temperature differences in cabinets in different areas. This temperature difference not only affects the operating efficiency of the server, but may also accelerate the aging of some servers. In addition, since it is impossible to provide relatively consistent ambient temperature and humidity for cabinets in different areas, it is difficult to meet the personalized needs of all servers. This application reduces the power consumption of precision air conditioners in the computer room by introducing high-purity outdoor fresh air. Through the temperature and humidity air volume balance control strategy, the cold air is transported to the cabinet area with high heat generation through the underfloor tunnel fan, balancing the temperature and humidity of the entire computer room and achieving temperature balance in each cabinet.

[0044] The present invention proposes an embodiment of a computer room environment control system. Specifically, Figure 1 The figure shows the equipment space layout diagram of the computer room environment control system provided by the embodiment of the present invention, which includes:

[0045] Precision air conditioning is arranged on one side of the machine room to adjust the temperature and humidity in the machine room; Figure 1As shown, there are three groups of precision air conditioners, which are evenly arranged on one side of the computer room. The precision air conditioners are used to cool the computer room environment on hot days and dehumidify the computer room, and the start and stop number and working mode of the precision air conditioner units are controlled by the intelligent control cabinet.

[0046] The variable frequency controlled fresh air unit is arranged on one side outside the machine room, and is used to introduce outdoor fresh air into the machine room. Among them, the variable frequency controlled fresh air unit is equipped with two units, namely the air intake unit and the exhaust unit. The air intake unit includes a rain cover, a high-efficiency filter, a micro-fog humidification area, a metal anti-fog net, an EBM variable frequency fan and a damper, which are arranged from the outside to the inside. The damper actuator drives the damper to open and close, and the damper actuator drives the damper to open and close. The damper actuator drives the damper to open and close. The EBM variable frequency fan installed in both the air intake unit and the exhaust unit can automatically adjust the wind speed and air volume according to the exhaust demand of the machine room, and achieve an efficient and energy-saving exhaust effect.

[0047] The temperature and humidity data collection mechanism is used to collect the temperature and humidity data inside the production server cabinet, inside the computer room and outside the computer room in real time, and transmit them to the intelligent control cabinet; specifically, the temperature and humidity data collection mechanism includes a temperature and humidity sensor inside the production server cabinet, a temperature and humidity sensor inside the computer room and a temperature and humidity sensor outside the computer room. The temperature and humidity sensor inside the production server cabinet can collect the temperature and humidity parameters inside each production server cabinet in real time, and transmit the collected temperature and humidity parameters to the intelligent control cabinet; the high-precision temperature and humidity sensors inside and outside the computer room transmit the temperature and humidity data inside and outside the computer room to the intelligent control cabinet in real time, providing basic data for intelligent control monitoring of the computer room.

[0048] The indoor and outdoor pressure difference sensor is used to monitor the difference in air pressure inside and outside the computer room, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet; the intelligent control cabinet adjusts the frequency of the EBM variable frequency fan in the exhaust fan unit according to the pressure difference data inside and outside the computer room to ensure that the computer room is in a slightly positive pressure environment.

[0049] The underfloor tunnel fans are evenly distributed under the computer room floor. They are used to deliver cold air into the tunnel under the floor, and then provide cooling cold air to each production server cabinet through the vents on the floor. The tunnel fans distributed under the floor can allocate the cold air delivery area under a controlled state, ensuring that high-temperature cabinets have more cold air supply, thereby achieving temperature and humidity balance in different cabinets.

[0050] Management servers and intelligent control cabinets, specifically Figure 3As shown is a topological diagram of the intelligent control equipment in the computer room environment control system provided by an embodiment of the present invention, wherein the management server receives data from the temperature and humidity data acquisition mechanism, the indoor and outdoor pressure difference sensor monitoring data, and the working status information of the precision air conditioner, the frequency conversion control fresh air unit, and the underfloor tunnel fan, and analyzes the current computer room environment based on the collected data, and generates corresponding control strategies to achieve control of each device through the intelligent control cabinet; in addition, the management server also provides corresponding control strategies for the intelligent control cabinet based on the target temperature and humidity values ​​of the computer room, and performs environmental control status monitoring and environmental control early warning on the computer room.

[0051] In the embodiment of the present invention, Figure 2 The figure shows a schematic diagram of a variable frequency controlled fresh air unit in a computer room environment control system provided by an embodiment of the present invention. The variable frequency controlled fresh air unit includes a filter, a micro-mist humidification unit, a variable frequency high-pressure fan, an air valve and an air valve actuator; the filter is installed at the air inlet of the variable frequency controlled fresh air unit, and is used to filter the fresh air entering the room from the outdoor; the micro-mist humidification unit is connected to the variable frequency controlled fresh air unit through a pipeline, and is mixed with the fresh air and then sent into the room; two groups of variable frequency high-pressure fans are provided, which are respectively connected to the air inlet duct and the air outlet duct of the variable frequency controlled fresh air unit; two groups of air valves and air valve actuators are provided, one group of air valves and air valve actuators are installed in the air inlet duct, and the other group of air valves and air valve actuators are installed in the air outlet duct, and the air valve actuator is connected to the intelligent control cabinet through a signal line, receives the control instruction of the PLC control unit in the intelligent control cabinet, and drives the air valve to perform corresponding opening and closing actions to open and close the air duct to prevent the outdoor high-temperature gas from entering the duct and forming condensation in the computer room. Among them, the variable frequency high-pressure fan adopts EBM high-pressure variable frequency fan, which can provide variable air volume and high-pressure fresh air. The variable air volume range of the fan is 10%-100%, and it can perform stepless linear adjustment through the PLC control unit, providing a technical basis for the environmental control of the computer room.

[0052] In the embodiment of the present invention, the filter includes a stainless steel bracket and a HEPA filter (high efficiency filter), and the HEPA filter is supported and fixed by the stainless steel bracket. The stainless steel bracket adopts a 790*790*100 stainless steel bracket that is easy to disassemble and assemble. The HEPA filter can filter air dust above PM5 in the air and provide clean fresh air supply for the computer room.

[0053] In an embodiment of the present invention, the frequency conversion controlled fresh air unit also includes a rain cover, which is installed at one end of the filter close to the air inlet direction. The rain cover prevents the high-efficiency filter from wetting on rainy days and prevents rainwater from entering the air duct, thereby protecting subsequent components from damage.

[0054] In an embodiment of the present invention, the variable frequency controlled fresh air unit also includes a metal anti-condensation net, which is installed in the rear section of the micro-mist humidification area to form condensation on the metal net to prevent the water mist generated during the humidification process from directly entering the interior of the fan, while further blocking tiny particles to protect the normal operation of the fan and subsequent equipment.

[0055] In the embodiment of the present invention, the micro mist humidification unit includes an ultrasonic micro mist generator and a water inlet pipeline; the ultrasonic micro mist generator is closely connected to the water inlet pipeline through a water inlet, and the water inlet pipeline starts from a water source interface and is connected to the water inlet of the ultrasonic micro mist generator after passing through a filter. After the high-efficiency filter, the micro mist humidification area is sprayed and humidified by the micro mist humidification unit to adjust the humidity of the fresh air entering the machine room and maintain a suitable humidity environment in the machine room to prevent the equipment from being damaged or generating static electricity due to low humidity.

[0056] In the embodiment of the present invention, the management server also publishes the current environmental status of the computer room and the corresponding control strategy to the computer room administrator's desktop through a visual graphical interface, which provides great convenience and efficiency for remote monitoring and management of the computer room.

[0057] In an embodiment of the present invention, the intelligent control cabinet includes a data acquisition module, a communication module, a PLC control unit, an electromechanical control module and a human-computer interaction interface; the data acquisition module collects the operating control parameters of the precision air conditioner, the temperature and humidity sensor data, and the pressure difference sensor data, and provides them to the server and the PLC control unit through the network module; the communication module realizes data exchange between the internal components of the intelligent control cabinet, and the communication between the intelligent control cabinet and the production server cabinet; the PLC control unit is connected to the data acquisition module, the communication module, and the electromechanical control module through an internal bus or interface to receive data and send control signals; the electromechanical control module includes a power switch module and a relay control module, which are used for power on and off control of equipment in the computer room; the human-computer interaction interface is connected to the PLC control unit through an internal bus or interface to receive and display data and status information of the PLC control unit.

[0058] Specifically, the data acquisition module includes an analog acquisition module and a MODBUS module, which are responsible for collecting the operating control parameters of the precision air conditioner, the temperature and humidity sensor data, and the pressure difference sensor data, converting them into the TCP / IP communication protocol format, and providing them to the server and PLC control unit through a network module (such as an Ethernet interface card) as the basic data for the intelligent environmental control of the computer room. The communication module includes a MODBUS communication module and a network switch, which are responsible for the communication between the intelligent control cabinet and the management server and the environmental control equipment in the computer room.

[0059] In addition, the intelligent control cabinet also includes inlet and outlet cables, signal cables, control power cables, large-screen human-machine interaction interface and DC power supply module; among them, the inlet and outlet cables are used to connect the intelligent control cabinet with external equipment, including power cables, signal cables, communication cables, etc.; the control power supply cables are used to provide a stable power supply for the control equipment (such as PLC, relays, sensors, etc.) in the intelligent control cabinet. The large-screen human-machine interaction interface is a 15-inch industrial touch screen, which is an interactive platform between the intelligent control cabinet and the user. It is used to display the operating status, historical data parameters, alarm information, etc. of the intelligent control cabinet, and allows the user to operate and control the intelligent control cabinet by touch, buttons, etc. The DC power supply module is a DC24V10A DC power supply module, which mainly provides DC power for the equipment in the intelligent control cabinet and the sensors in the computer room.

[0060] The present invention also provides an embodiment of a computer room environment control method implemented by using a computer room environment control system, which specifically includes the following steps:

[0061] Regulate the temperature and humidity in the machine room through precision air conditioning;

[0062] It should be noted that the operation mode and operation parameter control strategy of the precision air conditioner are as follows: the precision air conditioner is connected to the intelligent control cabinet through the communication module (communication card), and the operation mode and operation parameters of the precision air conditioner are directly controlled online by the intelligent control cabinet. The precision air conditioner is controlled every 30 minutes. When Tout>Th-5℃ and RHout<60%RH, the indoor precision air conditioner stops and is in standby state. When Tout≤Th-5℃ or RHout≥60%RH, the precision air conditioner operates according to the set indoor temperature and humidity targets. The precision air conditioner sets the operating temperature and humidity parameters as temperature Th-1℃ to Tl-1℃, humidity RHh-3%RH to RHl +3%RH; among them, Tout is the outdoor temperature value, which is the average temperature measured by the two temperature and humidity sensors outside the computer room, in °C; RHout is the outdoor relative humidity value, which is the average humidity measured by the two temperature and humidity sensors outside the computer room, in %RH. Th is the upper limit of high temperature set for the computer room control, in °C, Tl is the lower limit of low temperature set for the computer room control, in °C, RHh is the upper limit of relative humidity set for the computer room control, in %RH, RHl is the lower limit of relative humidity set for the computer room control, in %RH;

[0063] The humidification and dehumidification modes and operation parameter control strategies of precision air conditioners are as follows: when the precision air conditioner meets RHout≥60%RH, RHin<60%RH, or Tout≤5℃, RHin<60%RH, the precision air conditioner humidification function is started, the humidification function only controls the start and stop, and the precision air conditioner humidification is automatically adjusted according to the set value; when the precision air conditioner meets RHin≥65%RH, the precision air conditioner dehumidification function is started, and when the indoor humidity reaches the standard, the dehumidification function automatically stops. Among them, RHin is the indoor relative humidity value, which is the average humidity measured by multiple temperature and humidity sensors in the room, and the unit is %RH.

[0064] The fresh air unit is controlled by frequency conversion to introduce the preset speed and flow of outdoor fresh air into the machine room;

[0065] It should be noted that the start-stop control strategy of the variable frequency control fresh air unit is as follows: the operation mode of the variable frequency control fresh air unit is adjusted every 15 minutes, that is, the current environmental conditions are checked every 15 minutes, and only when RHout≥65%RH is satisfied, the control action is immediately executed, and the fresh air unit is started to introduce fresh air; when Tout>Th-5℃, RHout<60%RH, and Tl+1℃≥Tin≥Th-1℃, the outdoor fresh air fan unit and the supply air valve are turned on to send outdoor fresh air into the room; at the same time, the exhaust fan and the exhaust air valve are turned on to exhaust part of the indoor air; when RHout≥60%RH and RHout<65%RH, the indoor and outdoor temperature parameters are not considered, the fresh air unit is shut down, and the fresh air valve is closed, because there is no need to introduce fresh air under the current humidity conditions; among them, setting Tout>Th-5℃ ensures that when introducing fresh air, the indoor temperature will not be greatly affected by the outdoor temperature being too low.

[0066] Fresh air unit operation status control strategy: In addition to meeting the fresh air unit start-up conditions and shutdown conditions, the fresh air supply fan operation speed Pf is adjusted according to the standard temperature difference between the indoor and outdoor temperature difference Tin-Tout. Th-Tout=T&, the unit is ℃, and the range of T& is calculated from the difference between the high temperature upper limit of 24℃ set in the machine room and the outdoor minimum temperature of -20℃, that is, 44℃. This temperature range is divided into 100% as the benchmark for Pf operation control. The greater the temperature difference and the greater the fan power, the more significant the difference between indoor and outdoor temperatures, and more fresh air is needed to balance the indoor temperature; the smaller the temperature difference and the smaller the fan speed, the closer the indoor and outdoor temperatures are, and the less fresh air is needed; the minimum fan speed is not less than 15% of the total speed. Even if the indoor and outdoor temperature difference is very small, the fan will run at this minimum speed to maintain a certain air circulation; the fan speed is adjusted every 15 minutes, neither too frequently to cause system instability nor too slowly to cause a response lag; the standard temperature difference T& is a calculated value used to quantify the difference between indoor and outdoor temperatures. The calculation formula is Th (indoor temperature set value) minus Tout (outdoor temperature).

[0067] It should be noted that the operation control strategy of the mist humidification unit is: when 5℃>Tout>Th-5℃, RHout<60%RH and RHl+3%RH<RHin<RHh, turn on the cold mist humidification unit to humidify the room, and the humidification power P1-P5 is adjusted according to the difference between the indoor average humidity RHin and the target humidity range (RHl to RHh, assuming 45%RH to 65%RH). Assuming X is the difference between RHin and RHl (ie X = RHin - RHl), then:

[0068] X ≥ 15%RH: Run at the highest power P5 (because the difference is the largest, the maximum humidification amount is required);

[0069] X ≥ 12%RH and X < 15%RH: operate at the second highest power P4;

[0070] X ≥ 9%RH and X < 12%RH: operate at medium power P3;

[0071] X ≥ 6%RH and X < 9%RH: run at lower power P2;

[0072] X ≥ 3%RH and X < 6%RH: operate at minimum power P1;

[0073] If X < 3%RH, no humidification is required or the current minimum power operation is maintained.

[0074] When the outdoor temperature meets certain conditions and the outdoor humidity is lower than 60%RH, the humidification power is adjusted according to the difference between the indoor humidity and the target humidity range. The larger the difference, the higher the humidification power.

[0075] It should be noted that the humidification operation control strategy of the precision air conditioner is: when the outdoor humidity cannot meet the micro-fog humidification conditions (if the outdoor humidity is already very high, close to or exceeding the required indoor humidity level, micro-fog humidification is not required), and the indoor humidity is lower than RHl+3%RH, that is, the outdoor humidity is insufficient and the indoor humidity is lower than RHl+3%RH, if these two conditions are met, the precision air conditioner humidification mode is turned on through the intelligent control cabinet, and the number of precision air conditioner humidification units started is related to the value of RHin, that is:

[0076] Single unit start-up: When the difference between the indoor humidity (RHin) and the minimum target humidity (RHl) is within 5%RH, it is judged as slightly dry, and only one precision air conditioning humidification unit is started for humidification;

[0077] Two units start: If the difference between RHin and RHl is between 5%RH and 15%RH (including 5%RH but excluding 15%RH), it is judged that the indoor dryness is high and the humidification amount needs to be increased, so the two humidification units are started;

[0078] All three units are turned on: When the difference between RHin and RHl reaches or exceeds 15%RH, it indicates that the indoor environment is very dry and requires maximum humidification to quickly increase the indoor humidity, so all three precision air conditioning humidification units are turned on;

[0079] The humidification operation control strategy of this precision air conditioner uses intelligent monitoring and regulation to flexibly adjust the operating quantity of the humidification unit according to the real-time changes in outdoor humidity conditions and indoor humidity to achieve precise control of indoor humidity.

[0080] The temperature and humidity data collection mechanism is used to collect the temperature and humidity data in the production server cabinet, in the computer room and outside the computer room in real time, and transmit these data to the intelligent control cabinet in real time;

[0081] Monitor and record the difference in air pressure inside and outside the room provided by the indoor and outdoor pressure difference sensor, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet;

[0082] It should be noted that the operation control strategy of the exhaust fan unit of the variable frequency control fresh air unit is: the exhaust fan unit starts with the start of the variable frequency control fresh air unit to ensure that the dirty air in the room can be discharged in time while introducing fresh air. The exhaust fan unit automatically adjusts its operating frequency according to the indoor and outdoor pressure difference. PD is the pressure difference value of the indoor and outdoor pressure difference sensor, unit Pa. A specific indoor and outdoor pressure difference range of 5Pa>PD>10Pa is set as the trigger condition for dynamic regulation. That is, only when the indoor and outdoor pressure difference falls within this range, the system will dynamically adjust the operating frequency of the exhaust fan unit. The operating frequency of the exhaust fan unit will be regulated according to a fixed rule, that is, the operating speed of the exhaust fan unit is set to 95% of the speed of the fresh air unit to ensure that in most cases, the amount of exhaust and fresh air can be kept relatively balanced. When the indoor and outdoor pressure difference exceeds the set range (5Pa>PD>10Pa), the system will start the dynamic regulation mechanism. This adjustment is periodic, once every 15 minutes, and the amplitude of each adjustment is 1% (up or down). In this way, the system can gradually adjust the indoor and outdoor pressure difference back to the predetermined range, thereby maintaining the stability and comfort of the indoor environment.

[0083] Control the underfloor tunnel fan to send cold air into the tunnel under the floor, and provide cooling air to each production server cabinet through the vents on the floor;

[0084] The management server receives working status information from the temperature and humidity data collection mechanism, indoor and outdoor pressure difference sensors, precision air conditioners, variable frequency controlled fresh air units, and underfloor tunnel fans. It analyzes the current environmental conditions of the computer room based on the received data, and generates corresponding control strategies based on the analysis results. The control strategies include but are not limited to adjusting the working mode of the precision air conditioner, the operating parameters of the variable frequency controlled fresh air unit, the wind speed or switch status of the underfloor tunnel fan, etc. through the intelligent control cabinet.

[0085] It should be noted that according to the layout and heat dissipation requirements of the cabinets in the computer room, the tunnel fans and cabinets are grouped into regional groups so that the fan control can be more accurately targeted at the cabinets in a specific area, improving the efficiency and accuracy of air volume distribution. The air volume distribution control strategy of the tunnel fan under the floor is as follows: the tunnel fan is controlled and operated according to the regional grouping of the cabinets. Except for the three areas near the precision air conditioner and the fresh air outlet, which are not controlled by the tunnel fan, N air distribution zones are set according to the cabinet layout. The cabinets in each zone share the air volume control of one or more tunnel fans. The cabinet temperature (Tcec) of the cabinet in each air distribution zone is monitored in real time to determine whether the ventilation volume needs to be increased. When the cabinet temperature of the cabinet in each air distribution zone reaches Tcec-Th>5℃, the tunnel fan in this area is started to increase the ventilation volume of the cabinet in this area. The adjustment interval is once every 30 minutes. This interval adjustment method not only ensures the timely response of the air volume, but also avoids energy waste caused by excessive adjustment. Among them, Tcec is the cabinet temperature of a single cabinet, unit ℃. Through regional grouping and air distribution zoning, the air volume of the cabinets in the computer room is precisely controlled, which improves the heat dissipation efficiency. The fan is started only when needed, and the adjustment interval is reasonable, which effectively reduces energy consumption.

[0086] In another embodiment of the present invention, after receiving the air volume demand signal transmitted by the intelligent control cabinet, the variable frequency control fresh air unit searches for the corresponding five-level air volume adjustment gear in the PLC control unit; automatically adjusts the speed of the high-voltage variable frequency fan so that the fan output air volume reaches the air volume value corresponding to the selected gear; monitors the actual output air volume of the fan in real time, and performs fine-tuning through the feedback mechanism to stabilize the air volume at the required gear. The variable frequency control fresh air unit realizes the precise adjustment and stable control of the air volume of the high-voltage variable frequency fan through the coordinated work of the intelligent control cabinet and the PLC control unit. The whole process includes the steps of receiving the air volume demand signal, searching for the corresponding gear, automatically adjusting the fan speed, real-time monitoring and fine-tuning, etc., which ensures that the system can flexibly adjust the air volume according to actual needs, improve the indoor air quality and achieve energy saving and consumption reduction.

[0087] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design ideas and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A computer room environment control system, characterized in that: include: Precision air conditioning, arranged on one side of the machine room, is used to adjust the temperature and humidity in the machine room; The variable frequency controlled fresh air unit is arranged on one side outside the machine room and is used to introduce outdoor fresh air into the machine room; The temperature and humidity data collection mechanism is used to collect the temperature and humidity data inside the server cabinet, inside the computer room and outside the computer room in real time and transmit it to the intelligent control cabinet; Indoor and outdoor pressure difference sensor, used to monitor the difference in air pressure inside and outside the room, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet; Underfloor tunnel fans are evenly distributed under the floor of the computer room to deliver cold air into the tunnel under the floor, and then provide cooling air to each server cabinet through the vents on the floor; A management server and an intelligent control cabinet, wherein the management server receives data from the temperature and humidity data acquisition mechanism, the data monitored by the indoor and outdoor pressure difference sensor, and the working status information of the precision air conditioner, the variable frequency controlled fresh air unit, and the underfloor tunnel fan, and analyzes the current computer room environmental conditions based on the collected data, and generates corresponding control strategies to realize control of each device through the intelligent control cabinet.

2. The computer room environment control system according to claim 1, characterized in that: The variable frequency controlled fresh air unit includes a filter, a micro-mist humidification unit, a variable frequency high-pressure fan, an air valve and an air valve actuator; the filter is installed at the air inlet of the variable frequency controlled fresh air unit, and is used to filter the fresh air entering the room from the outdoor; the micro-mist humidification unit is connected to the variable frequency controlled fresh air unit through a pipeline, and is mixed with the fresh air and then sent into the room; the variable frequency high-pressure fan is provided with two groups, which are respectively connected to the air inlet duct and the air outlet duct of the variable frequency controlled fresh air unit; the air valve and the air valve actuator are each provided with two groups, one group of air valves and air valve actuators are installed in the air inlet duct, and the other group of air valves and air valve actuators are installed in the air outlet duct, and the air valve actuator is connected to the intelligent control cabinet through a signal line, receives the command of the intelligent control cabinet, and drives the air valve to perform corresponding actions.

3. The computer room environment control system according to claim 2, characterized in that: The filter comprises a stainless steel bracket and a HEPA filter net, and the HEPA filter net is supported and fixed by the stainless steel bracket.

4. The computer room environment control system according to claim 3, characterized in that: The variable frequency controlled fresh air unit also includes a rain cover, which is installed at one end of the filter close to the air inlet direction.

5. The computer room environment control system according to claim 2, characterized in that: The variable frequency controlled fresh air unit also includes a metal anti-condensation net, which is installed in the rear section of the micro-mist humidification zone and is used to form condensation on the metal net.

6. The computer room environment control system according to claim 1, characterized in that: The micro-mist humidification unit comprises an ultrasonic micro-mist generator and a water inlet pipeline; the ultrasonic micro-mist generator is closely connected with the water inlet pipeline through a water inlet, and the water inlet pipeline starts from a water source interface and is connected to the water inlet of the ultrasonic micro-mist generator after passing through the filter.

7. The computer room environment control system according to claim 1, characterized in that: The management server also publishes the current environment status of the computer room and the corresponding control strategy to the computer room administrator's desktop through a visual graphical interface.

8. The computer room environment control system according to claim 1, characterized in that: The intelligent control cabinet includes a data acquisition module, a communication module, a PLC control unit, an electromechanical control module and a human-computer interaction interface; the data acquisition module collects the operating control parameters of the precision air conditioner, the temperature and humidity sensor data, and the pressure difference sensor data, and provides them to the server and the PLC control unit through the network module; the communication module is used to realize data exchange between the internal components of the intelligent control cabinet, as well as communication between the intelligent control cabinet and the server cabinet; the PLC control unit is connected to the data acquisition module, the communication module, and the electromechanical control module through an internal bus or interface to receive data and send control signals; the electromechanical control module includes a power switch module and a relay control module, which are used for power on and off control of equipment in the computer room; the human-computer interaction interface is connected to the PLC control unit through an internal bus or interface to receive and display data and status information of the PLC control unit.

9. A method for controlling a computer room environment implemented by using the computer room environment control system according to any one of claims 1 to 8, characterized in that: include: Regulate the temperature and humidity in the machine room through precision air conditioning; The fresh air unit is controlled by frequency conversion to introduce the preset speed and flow of outdoor fresh air into the machine room; The temperature and humidity data collection mechanism is used to collect the temperature and humidity data inside the server cabinet, inside the computer room and outside the computer room in real time, and transmit these data to the intelligent control cabinet in real time; Monitor and record the difference in air pressure inside and outside the room provided by the indoor and outdoor pressure difference sensor, and transmit the indoor and outdoor pressure difference data to the intelligent control cabinet; Control the underfloor tunnel fan to send cold air into the tunnel under the floor, and provide cooling air to each server cabinet through the vents on the floor; The management server receives working status information from the temperature and humidity data collection mechanism, indoor and outdoor pressure difference sensors, precision air conditioners, variable frequency controlled fresh air units, and underfloor tunnel fans. It analyzes the current environmental conditions of the computer room based on the received data, and generates corresponding control strategies based on the analysis results. The control strategies include but are not limited to adjusting the working mode of the precision air conditioner, the operating parameters of the variable frequency controlled fresh air unit, the wind speed or switch status of the underfloor tunnel fan, etc. through the intelligent control cabinet.

10. The computer room environment control method according to claim 9, characterized in that: After receiving the air volume demand signal transmitted by the intelligent control cabinet, the frequency conversion control fresh air unit searches for the corresponding five-level air volume adjustment gear in the PLC control unit; Automatically adjust the speed of the high-voltage variable-frequency fan to make the fan output air volume reach the air volume value corresponding to the selected gear; The actual output air volume of the fan is monitored in real time, and fine-tuned through the feedback mechanism to stabilize the air volume at the required level.

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