Temperature control method, device, equipment and readable storage medium for back panel air conditioner

Abstract

The present invention provides a temperature control method, device, equipment and readable storage medium for a backplane air conditioner. The temperature control method for the backplane air conditioner includes: dividing the backplane air conditioner corresponding to each cabinet into several regions, where each region includes a fan group, and each fan group includes several supply / return air temperature sensors and several fans, and each fan group is independently controlled; when the backplane air conditioner is operating normally, calculating the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group, and determining the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature value of the fan group; controlling the fans in each fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located. By means of the present invention, hotspot elimination can be effectively achieved, and the problem of uneven hotspots in a single cabinet can be solved.

Description

Technical Field

[0001] The present invention relates to the field of temperature control in data center computer rooms, and particularly to a temperature control method, device, equipment and readable storage medium for a backplane air conditioner. Background Art

[0002] In recent years, data center computer rooms have been developing rapidly towards large scale, integration and high energy consumption. Investigations show that in the past decade, the power consumption of servers has increased by dozens of times, and the power consumption of the highest single rack can reach more than 20 - 30KW. These high-performance devices have caused a sharp increase in the heat generation inside the data center, posing a severe challenge to data center heat dissipation. With the entry of these high-heat-generating devices, the temperature inside the data center continues to rise, and the temperature of each local area varies. The backplane air conditioner is installed on the back of each cabinet and is a one-to-one cooling device that directly cools local hot spots to solve the problem of uneven distribution of local hot spots at the cabinet level. However, considering the differences in the layout of components inside the cabinet and the differences in the heat dissipation power of components, there is also a problem of uneven hot spot distribution at the component level in a single cabinet. Summary of the Invention

[0003] The main purpose of the present invention is to provide a temperature control method, device, equipment and readable storage medium for a backplane air conditioner, aiming to solve the technical problem that the existing temperature control scheme cannot solve the problem of uneven hot spot distribution at the component level of the backplane air conditioner in a single cabinet.

[0004] In the first aspect, the present invention provides a temperature control method for a backplane air conditioner, and the temperature control method for the backplane air conditioner includes the following steps:

[0005] Divide the backplane air conditioner corresponding to each cabinet into several regions, each region includes a fan group, and each fan group includes several supply / return air temperature sensors and several fans, wherein each fan group is independently controlled;

[0006] When the backplane air conditioner is operating normally, calculate the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group, and determine the cooling demand value of the fan group based on a preset supply / return air temperature value and the supply / return air temperature value of the fan group;

[0007] Control the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located.

[0008] Optionally, the step of controlling the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located includes:

[0009] If the refrigeration demand value is within the first preset range, control each fan of the fan group to operate at the maximum speed;

[0010] If the refrigeration demand value is within the second preset range, calculate the target speed using the first formula, and control each fan of the fan group to operate at the target speed;

[0011] If the refrigeration demand value is within the third preset range, control the fans in the fan group to be turned off according to a preset ratio, and control the fans that are not turned off in the fan group to operate at the minimum speed;

[0012] If the refrigeration demand value is within the fourth preset range, control all the fans in the fan group to be turned off.

[0013] Optionally, the temperature control method of the backplane air conditioner further includes:

[0014] If it is detected that all the fans of a fan group have reached the maximum speed, and the supply / return air temperature value of the fan group is greater than the preset threshold and the duration is greater than the first preset duration,

[0015] then determine the refrigeration demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature values of other fan groups of the backplane air conditioner until at least one fan in the fan group has a speed less than the maximum speed, or the supply / return air temperature value of the fan group is not greater than the preset threshold.

[0016] Optionally, the temperature control method of the backplane air conditioner further includes:

[0017] When it is detected that there is a fan group with a faulty fan, determine whether the number of normally operating fans in the fan group is less than the number of faulty fans;

[0018] If it is not less, increase the speed of all the normally operating fans in the fan group by the first speed correction coefficient and operate for the second preset duration;

[0019] If it is less, increase the speed of all the normally operating fans in the backplane air conditioner by the second speed correction coefficient and operate for the second preset duration.

[0020] Optionally, the temperature control method of the backplane air conditioner further includes:

[0021] When it is detected that there is a fan group with a faulty supply / return air temperature sensor, detect whether there are other non-faulty supply / return air temperature sensors in the fan group;

[0022] If the fan group has other non-faulty supply / return air temperature sensors, calculate the supply / return air temperature value of the fan group based on the supply / return air temperatures detected by other non-faulty supply / return air temperature sensors in the fan group;

[0023] If there are no other non-faulty supply / return air temperature sensors in the fan unit, determine whether there is at least one supply / return air temperature value in other fan units of the backplane air conditioner;

[0024] If there is at least one supply / return air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the supply / return air temperature value of the fan unit;

[0025] If there is no supply / return air temperature value in other fan units of the backplane air conditioner, determine whether the fan unit has a return / supply air temperature value;

[0026] If the fan unit has a return / supply air temperature value, switch the fan unit to return / supply air temperature control, and determine the cooling demand value of the fan unit based on the preset return / supply air temperature value and the return / supply air temperature value of the fan unit;

[0027] If the fan unit has no return / supply air temperature value, determine whether there is at least one return / supply air temperature value in other fan units of the backplane air conditioner;

[0028] If there is at least one return / supply air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the return / supply air temperature value of the fan unit;

[0029] If there is no return / supply air temperature value in other fan units of the backplane air conditioner, control all the normally operating fans of the backplane air conditioner to run at the maximum speed.

[0030] In a second aspect, the present invention further provides a temperature control device for a backplane air conditioner, and the temperature control device for the backplane air conditioner includes:

[0031] A zoning module, configured to divide the backplane air conditioner corresponding to each cabinet into several areas, each area includes a fan unit, and each fan unit includes several supply / return air temperature sensors and several fans, wherein each fan unit is independently controlled;

[0032] A determination module, configured to, when the backplane air conditioner is operating normally, calculate the supply / return air temperature value of the fan unit based on the supply / return air temperatures monitored by several supply / return air temperature sensors in the fan unit, and determine the cooling demand value of the fan unit based on the preset supply / return air temperature value and the supply / return air temperature value of the fan unit;

[0033] A control module, configured to control the fans in the fan unit according to the corresponding control strategy based on the range where the cooling demand value of the fan unit is located.

[0034] Optionally, the control module is configured to:

[0035] If the refrigeration demand value is within the first preset range, control each fan of the fan group to operate at the maximum speed;

[0036] If the refrigeration demand value is within the second preset range, calculate the target speed using the first formula, and control each fan of the fan group to operate at the target speed;

[0037] If the refrigeration demand value is within the third preset range, control the fans in the fan group to be turned off according to a preset ratio, and control the fans that are not turned off in the fan group to operate at the minimum speed;

[0038] If the refrigeration demand value is within the fourth preset range, control all the fans in the fan group to be turned off.

[0039] Optionally, the temperature control device of the backplane air conditioner further includes a temperature overlimit control module, which is used for:

[0040] If it is monitored that all the fans of a fan group have reached the maximum speed, and the supply / return air temperature value of the fan group is greater than the preset threshold, and the duration is greater than the first preset duration,

[0041] Then determine the refrigeration demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature values of other fan groups of the backplane air conditioner until at least one fan in the fan group has a speed less than the maximum speed, or the supply / return air temperature value of the fan group is not greater than the preset threshold.

[0042] Optionally, the temperature control device of the backplane air conditioner further includes a first fault control module, which is used for:

[0043] When it is detected that there is a fan group with a faulty fan, determine whether the number of normally operating fans in the fan group is less than the number of faulty fans;

[0044] If it is not less, increase the speed of all the normally operating fans in the fan group by the first speed correction coefficient and operate for the second preset duration;

[0045] If it is less, increase the speed of all the normally operating fans in the backplane air conditioner by the second speed correction coefficient and operate for the second preset duration.

[0046] Optionally, the temperature control device of the backplane air conditioner further includes a second fault control module, which is used for:

[0047] When it is detected that there is a fan group with a faulty supply / return air temperature sensor, detect whether there are other non-faulty supply / return air temperature sensors in the fan group;

[0048] If there are other non-faulty supply / return air temperature sensors in the fan unit, calculate the supply / return air temperature value of the fan unit based on the supply / return air temperature detected by other non-faulty supply / return air temperature sensors in the fan unit;

[0049] If there are no other non-faulty supply / return air temperature sensors in the fan unit, determine whether there is at least one supply / return air temperature value in other fan units of the backplane air conditioner;

[0050] If there is at least one supply / return air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the supply / return air temperature value of the fan unit;

[0051] If there is no supply / return air temperature value in other fan units of the backplane air conditioner, determine whether the fan unit has a return / supply air temperature value;

[0052] If the fan unit has a return / supply air temperature value, switch the fan unit to return / supply air temperature control, and determine the cooling demand value of the fan unit based on the preset return / supply air temperature value and the return / supply air temperature value of the fan unit;

[0053] If the fan unit has no return / supply air temperature value, determine whether there is at least one return / supply air temperature value in other fan units of the backplane air conditioner;

[0054] If there is at least one return / supply air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the return / supply air temperature value of the fan unit;

[0055] If there is no return / supply air temperature value in other fan units of the backplane air conditioner, control all the normally operating fans of the backplane air conditioner to run at the maximum speed.

[0056] In a third aspect, the present invention further provides a temperature control device for a backplane air conditioner. The temperature control device for the backplane air conditioner includes a processor, a memory, and a temperature control program for the backplane air conditioner stored on the memory and executable by the processor. When the temperature control program for the backplane air conditioner is executed by the processor, the steps of the temperature control method for the backplane air conditioner as described above are implemented.

[0057] In a fourth aspect, the present invention further provides a readable storage medium. A temperature control program for a backplane air conditioner is stored on the readable storage medium. When the temperature control program for the backplane air conditioner is executed by a processor, the steps of the temperature control method for the backplane air conditioner as described above are implemented.

[0058] The present invention provides a temperature control method, device, equipment and readable storage medium for a backplane air conditioner. The temperature control method for the backplane air conditioner includes: dividing the backplane air conditioner corresponding to each cabinet into several areas, each area including a fan group, and each fan group including several supply / return air temperature sensors and several fans, wherein each fan group is independently controlled; when the backplane air conditioner is operating normally, calculating the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group; determining the cooling demand value of the fan group based on a preset supply / return air temperature value and the supply / return air temperature value of the fan group; and controlling the fans in each fan group according to a corresponding control strategy based on the range where the cooling demand value of the fan group is located. The present invention independently controls the fans in each fan group within the area. Under normal operating conditions of the backplane air conditioner, the cooling capacity range of the cooling system of the backplane air conditioner can be maximally increased. Compared with the traditional control method of the cooling system of the backplane air conditioner, the cooling capacity adjustment is smoother and more uniform, the return air hot spots of the cabinet can be effectively controlled, and the phenomenon of uneven temperature field inside the cabinet can be effectively solved. And on this basis, when the temperature exceeds the limit, or the fan or the supply / return air temperature sensor fails, the cooperation and fault response measures of each fan group are increased, which can avoid the problem of single fan group temperature exceeding the limit, and avoid the load fluctuation of the cooling system of the backplane air conditioner, and maintain its adaptive operation under fault conditions. Description of the Drawings

[0059] Figure 1 It is a schematic diagram of the hardware structure of the temperature control equipment for the backplane air conditioner involved in the solution of the embodiment of the present invention;

[0060] Figure 2 It is a schematic flowchart of an embodiment of the temperature control method for the backplane air conditioner of the present invention;

[0061] Figure 3 It is a schematic diagram of the refrigeration system of the gravity backplane air conditioner in an embodiment of the temperature control method for the backplane air conditioner of the present invention;

[0062] Figure 4 It is a schematic diagram of the backplane air conditioner partition in an embodiment of the temperature control method for the backplane air conditioner of the present invention;

[0063] Figure 5 It is a schematic diagram of the fan speed - cooling demand value control in an embodiment of the temperature control method for the backplane air conditioner of the present invention;

[0064] Figure 6 It is a schematic flowchart of the control process when the return air temperature sensor fails in an embodiment of the temperature control method for the backplane air conditioner of the present invention;

[0065] Figure 7 It is a schematic diagram of the functional modules in an embodiment of the temperature control device for the backplane air conditioner of the present invention.

[0066] The realization, functional features, and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific Embodiments

[0067] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0068] In a first aspect, an embodiment of the present invention provides a temperature control device for a backplane air conditioner.

[0069] Referring to Figure 1 , Figure 1 , which is a schematic diagram of the hardware structure of the temperature control device for the backplane air conditioner involved in the embodiment of the present invention. In the embodiment of the present invention, the temperature control device for the backplane air conditioner may include a processor 1001 (such as a Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components; the user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM), or a stable memory (non-volatile memory), such as a disk memory, and the memory 1005 may optionally also be a storage device independent of the aforementioned processor 1001. Those skilled in the art can understand that Figure 1 the hardware structure shown in

[0070] does not constitute a limitation to the present invention and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 1 , Figure 1 Continuing to refer to

[0071] In a second aspect, an embodiment of the present invention provides a temperature control method for a backplane air conditioner.

[0072] Referring to Figure 2 , Figure 2Schematic flow chart of an embodiment of the temperature control method for the backplane air conditioner of the present invention.

[0073] In an embodiment of the temperature control method for the backplane air conditioner of the present invention, the temperature control method for the backplane air conditioner includes:

[0074] Step S10: Divide the backplane air conditioner corresponding to each cabinet into several regions. Each region includes a fan group, and each fan group includes several supply / return air temperature sensors and several fans. Among them, each fan group is independently controlled;

[0075] In this embodiment, the above temperature control method for the backplane air conditioner is implemented on a gravity backplane air conditioner. Refer to Figure 3 , Figure 3 is a schematic diagram of the refrigeration system of the gravity backplane air conditioner. Among them, 1 is an electric two-way valve, 2 is an exhaust valve, 3 is a chilled water outlet temperature sensor, 4 is a plate heat exchanger, 5 is a ball valve, 6 is a drain valve, 7 is a refrigerant outlet temperature sensor, 8 is a needle valve, 9 is an evaporator, 10 is a fan, 11 is a supply air temperature sensor, 12 is a refrigerant inlet temperature sensor, 13 is a return air temperature sensor, 14 is a return air temperature sensor. Among them, the refrigeration principle of the refrigeration system of the gravity backplane air conditioner is: Liquid refrigerant flows into the evaporator (9) from below the evaporator (9). Under the action of the fan (10), the indoor air exchanges heat with the refrigerant. After the air is cooled, it is blown out by the fan, taking away the cabinet heat load. After the liquid refrigerant absorbs heat and vaporizes, it enters the plate heat exchanger (4) from above the evaporator (9), and exchanges heat with the chilled water flowing in the plate heat exchanger (4). The low-temperature chilled water flows into the plate heat exchanger (4) from the chilled water main unit through the chilled water inlet pipeline, absorbs heat, and then returns to the chilled water main unit through the chilled water outlet pipeline. The vaporized refrigerant exchanges heat with the chilled water, and after releasing heat and liquefying, under the action of gravity, it flows back into the evaporator (9) from the pipeline below the evaporator (9) through the pipeline to start the next cycle.

[0076] Among them, several return air temperature sensors (12) and supply air temperature sensors (11) arranged in the height direction are set near the evaporator (9) to monitor the real-time return / supply air temperature, and several fans (10) arranged in the height direction are set. The fans (10) are generally arranged in single rows and double rows. The existing backplane air conditioner corresponding to a single cabinet will take the maximum value / average value of the real-time return / supply air temperature monitored by all the return air temperature sensors (12) / supply air temperature sensors (11) on it to uniformly control all the fans (10) on it. However, since the refrigerant flow direction of the plate heat exchanger (4) of the backplane air conditioner is from bottom to top, the temperature of the upper part will be too high, resulting in a large difference in the detected temperatures of the supply / return air temperature sensors at different height positions, that is, the hot spot distribution of the single cabinet is uneven. According to the above existing unified temperature control method, the problem of uneven hot spot distribution of the single cabinet cannot be solved, and some other problems will occur. For example, if the average value is used for control, the temperature of some parts of the single cabinet will continue to be too high, which will bring problems to the reliability of the refrigeration capacity; if the maximum value is used for control, the temperature of some parts of the single cabinet will be too low, which will cause waste of the refrigeration capacity.

[0077] Therefore, in this embodiment, the backplane air conditioner corresponding to each cabinet is divided into several areas, and each of the above areas includes several supply / return air temperature sensors and several fans. The several supply / return air temperature sensors and several fans in the above area form a fan group, and each fan group is independently controlled. For example, referring to Figure 4 , taking the example of setting 3 return air temperature sensors (Th1, Th2, Th3), 3 supply air temperature sensors (Ts1, Ts2, Ts3) and 6 fans (Fan1, Fan2, Fan3, Fan4, Fan5, Fan6) on the backplane air conditioner respectively, Figure 4 the left side in Figure 4 is the return air direction of the cabinet. Separate control areas are divided according to needs. For the convenience of description, this embodiment takes Figure 4 the right side as an example and divides it into upper, middle and lower areas. Different sensors and fans belong to different areas. The upper area includes Th1, Ts1, Fan1, Fan2, the middle area includes Th2, Ts2, Fan3, Fan4, and the lower area includes Th3, Ts3, Fan5, Fan6. When the backplane system is working properly, the fans (Fan1, Fan2) in the upper area are independently controlled based on the supply / return air temperature sensors (Th1, Ts1) and the control logic partition in this area; the fans (Fan3, Fan4) in the middle area are independently controlled based on the supply / return air temperature sensors (Th2, Ts2) and the control logic partition in this area; the fans (Fan5, Fan6) in the lower area are independently controlled based on the supply / return air temperature sensors (Th3, Ts3) and the control logic partition in this area. This method can effectively avoid the uneven return / supply air temperature of the backplane air conditioner and the problem of local hot spots generated inside the single cabinet.

[0078] In the solution of this embodiment, the division of the independent temperature control area is not limited to the described examples, and the number of fans in each area should be at least 2 or more; the backplane air-conditioning cooling system of a single cabinet can be evenly set in the height or width direction based on the actual backplane supply / return air temperature sensors and the number of fan arrangements, or can be further designed specifically based on the actual component heat loads in the cabinet, and non-uniform local zoning can be carried out for the hot spots with strong representativeness to achieve efficient and accurate temperature control. Compared with the existing conventional control methods, the solution of this embodiment can more effectively control the return air hot spots of the cabinet and effectively solve the phenomenon of uneven temperature field in the cabinet.

[0079] Step S20, when the backplane air conditioner is operating normally, calculate the supply / return air temperature values of the fan group based on the supply / return air temperatures monitored by several supply / return air temperature sensors in the fan group, and determine the cooling demand value of the fan group based on the preset supply / return air temperature values and the supply / return air temperature values of the fan group.

[0080] In this embodiment, when the backplane air conditioner is operating normally, if the user uses return air temperature control at this time, the return air temperature values of the fan group will be calculated based on the return air temperatures monitored by several return air temperature sensors in the fan group of each area. After obtaining the return air temperature values of the fan groups in each independent control area, then based on the difference between the preset return air temperature value and the return air temperature values of the above fan groups, combined with parameters such as the preset proportional band and temperature overrun threshold, the PID algorithm is used to determine the cooling demand value of the above fan group.

[0081] If the user uses supply air temperature control at this time, the supply air temperature values of the fan group will be calculated based on the supply air temperatures monitored by several supply air temperature sensors in the fan group of each area. After obtaining the supply air temperature values of the fan groups in each independent control area, then based on the difference between the preset supply air temperature value and the supply air temperature values of the above fan groups, combined with parameters such as the preset proportional band and temperature overrun threshold, the PID algorithm is used to determine the cooling demand value of the above fan group.

[0082] Step S30, based on the range where the cooling demand value of the fan group is located, control the fans in the fan group according to the corresponding control strategy.

[0083] In this embodiment, after the step of determining the cooling demand value of the fan unit based on the preset supply / return air temperature value and the supply / return air temperature value of the fan unit, the fan in the fan unit is controlled according to the corresponding control strategy based on the range where the determined cooling demand value of the fan unit is located. Among them, each fan unit is controlled in the above manner, and the difference in the control strategy of the fans in each fan unit only depends on the cooling demand value of the fan unit to which it belongs. Under normal working conditions, this method of independently controlling the fans of each fan unit in the area can maximize the cooling capacity range of the cooling system of the backplane air conditioner. Compared with the traditional control method of the backplane air conditioner cooling system, its cooling capacity adjustment is smoother and more uniform.

[0084] Further, in one embodiment, the step S30 includes:

[0085] If the cooling demand value is within the first preset range, control each fan of the fan unit to run at the maximum speed;

[0086] If the cooling demand value is within the second preset range, calculate the target speed using the first formula, and control each fan of the fan unit to run at the target speed;

[0087] If the cooling demand value is within the third preset range, control the fans in the fan unit to be turned off according to a preset ratio, and control the fans that are not turned off in the fan unit to run at the minimum speed;

[0088] If the cooling demand value is within the fourth preset range, control all the fans in the fan unit to be turned off.

[0089] In this embodiment, after determining the cooling demand value of the fan unit corresponding to each area, specifically, the step of controlling the fans in each fan unit according to the corresponding control strategy based on the range where the determined cooling demand value of each fan unit is located includes: If the cooling demand value is within the first preset range, control each fan of the fan unit to run at the maximum speed; If the cooling demand value is within the second preset range, calculate the target speed using the first formula, and control each fan of the fan unit to run at the target speed; If the cooling demand value is within the third preset range, control the fans in the fan unit to be turned off according to a preset ratio, and control the fans that are not turned off in the fan unit to run at the minimum speed; If the cooling demand value is within the fourth preset range, control all the fans in the fan unit to be turned off.

[0090] For example, referring to Figure 5 , taking the case where the user adopts return air temperature control at this time as an example, combined with Figure 4, if the preset return air temperature (set by the user) is 20°C, and the measured return air temperature value Th1 of the fan group Team-1 in the upper area above (detected by the return air temperature sensor) is 30°C. Combining parameters such as the preset proportional band and temperature overrun threshold, a series of calculations such as the PID algorithm are used to determine that the cooling demand value U1(k) of the fan group Team-1 in the upper area is 100%, and this proportional value is used to characterize the magnitude of the cooling demand. When it is determined that the cooling demand value U1(k) of the above-mentioned fan group Team-1 is greater than 100%, then the cooling demand is the largest at this time, and each fan (Fan1, Fan2) of the above-mentioned fan group Team-1 needs to be controlled to run at the maximum speed.

[0091] When the measured return air temperature value Th1 of the above-mentioned fan group Team-1 is 25°C, the cooling demand value U1(k) is 50%. When it is determined that the cooling demand value U1(k) of the above-mentioned fan group Team-1 is greater than 0% and less than or equal to 100%, the rotation speed of the fans (Fan1, Fan2) is adjusted in real time according to the cooling demand value U1(k), the target rotation speed is calculated by the first formula, and each fan (Fan1, Fan2) of the above-mentioned fan group Team-1 is controlled to run at the target rotation speed. The first formula is: fancur=(U1(k)-0%)*(fanmax-fanmin) / (100%-0%)+fanmin, where fancur is the target rotation speed, U1(k) is the cooling demand value, fanmax is the maximum rotation speed of the fan, and fanmin is the minimum rotation speed of the fan.

[0092] When the measured return air temperature value Th1 of the above-mentioned fan group Team-1 is 20°C, which is the same as the preset return air temperature, then the cooling demand value is 0%. If it is determined that the cooling demand value U1(k) of the above-mentioned fan group Team-1 is greater than -50% and less than or equal to 0%, and the cooling demand value is decreasing relative to the previous cooling demand value, then at this time, the fans (Fan1, Fan2) in the above-mentioned fan group Team-1 are controlled to run at the minimum speed.

[0093] When the measured return air temperature value Th1 of the above-mentioned fan group Team-1 is 20°C, which is the same as the preset return air temperature, then the cooling demand value is 0%. If it is determined that the cooling demand value U1(k) of the above-mentioned fan group Team-1 is greater than -50% and less than or equal to 0%, and the cooling demand value U1(k) is increasing relative to the previous cooling demand value U1(k), then at this time, the running time of the fans (Fan1, Fan2) in the fan group Team-1 is compared, the fan Fan1 with the longest running time is turned off, and the unturned-off fan Fan2 in the above-mentioned fan group is controlled to run at the minimum speed.

[0094] When the measured return air temperature value of the above-mentioned fan group is 15°C, which is less than the preset return air temperature, the refrigeration demand value is -50%. When it is determined that the refrigeration demand value U1(k) of the above-mentioned fan group Team-1 is greater than -100% and less than or equal to -50%, and the refrigeration demand value is decreasing compared to the previous refrigeration demand value, then at this time, compare the operating times of the fans (Fan1, Fan2) in the fan group Team-1, turn off the fan Fan1 with the longest operating time, and control the unturned-off fan Fan2 in the above-mentioned fan group to operate at the minimum speed.

[0095] When the measured return air temperature value of the above-mentioned fan group is 15°C, which is less than the preset return air temperature, the refrigeration demand value is -50%. When it is determined that the refrigeration demand value U1(k) of the above-mentioned fan group Team-1 is greater than -100% and less than or equal to -50%, and the refrigeration demand value is increasing compared to the previous refrigeration demand value, then at this time, turn off all the fans Fan1 and Fan2 in the above-mentioned fan group Team-1.

[0096] When the measured return air temperature value of the above-mentioned fan group is 10°C, which is less than the preset return air temperature, the refrigeration demand value is -100%. When it is determined that the refrigeration demand value U1(k) of the above-mentioned fan group Team-1 is less than or equal to -100%, then at this time, turn off all the fans Fan1 and Fan2 in the above-mentioned fan group Team-1.

[0097] This embodiment is only for descriptive examples. The actual refrigeration demand interval sampling points and the number of opened and closed fans can be adjusted according to the actual situation, increased or decreased. For example, the range nodes of the refrigeration demand value can be below -120%, -120%~-60%, -60%~-30%, -30%~10%, 10%~120%, above 120%. For example, the number of fans can be 3, divided into the fully closed state, the state of closing 2 and opening 1, the state of closing 1 and opening 2, the fully open state, etc. And starting and stopping the fans in the above-mentioned manner follows the following principle: each time a certain fan needs to be turned off, compare the cumulative operating times of all the fans in the fan group, and turn off the fans with longer operating times in turn; each time a fan needs to be turned on, compare the cumulative operating times of all the fans in the fan group, and turn on the fans with the shortest operating times in turn. In the above-mentioned manner, the uniformity setting of the operating times of each fan in the system is increased, which can effectively improve the total system maintenance time and reduce the number of fan maintenance and replacements in actual applications.

[0098] Under normal working conditions, this method of independently controlling the fans of each fan group in the area can maximize the refrigeration capacity range of the cooling system of the backplane air conditioner. Compared with the traditional control method of the backplane air conditioner cooling system, its cooling capacity adjustment is smoother and more uniform.

[0099] Further, in one embodiment, the temperature control method of the backplane air conditioner includes:

[0100] If it is detected that all the fans in a fan group reach the maximum rotation speed, and the supply / return air temperature value of the fan group is greater than a preset threshold value and the duration is greater than a first preset duration,

[0101] then determine the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature values of other fan groups of the backplane air conditioner until at least one fan in the fan group has a rotation speed less than the maximum rotation speed, or the supply / return air temperature value of the fan group is not greater than the preset threshold value.

[0102] In this embodiment, due to the uneven distribution of local hot spots in the backplane air conditioner, if the temperature detected by the temperature sensor still exceeds the temperature threshold limit even when the fan groups corresponding to some areas operate at the maximum fan rotation speed and lasts for a period of time, it will affect the control accuracy of the backplane air conditioner at this time. Among them, the temperature threshold is obtained based on the preset return / supply temperature and the temperature overrun threshold. At this time, to reduce the hot spots generated by the fan groups corresponding to some areas, it is necessary to assist through other fan groups and increase the fan rotation speed of other fan groups to eliminate the hot spots.

[0103] Therefore, the solution of this embodiment increases the collaborative function of each fan group and avoids the problem of temperature overrun of a single fan group. Since the detected temperature of the fan group with the problem of high temperature overrun is necessarily higher than the detected temperatures of other fan groups, by replacing the detected temperature of the sensor of the fan group with the problem of high temperature overrun, the cooling demand value of other fan groups can be correspondingly increased, thereby increasing the fan rotation speed of the overall backplane air conditioner to achieve the purpose of assistance.

[0104] Specifically, for the problem of temperature overrun of some fan groups, the temperature control method of the backplane air conditioner further includes: if it is detected that all the fans in a fan group reach the maximum rotation speed, and the supply / return air temperature value of the fan group is greater than a preset threshold value and the duration is greater than a first preset duration, then determine the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature values of other fan groups of the backplane air conditioner until at least one fan in the fan group has a rotation speed less than the maximum rotation speed, or the supply / return air temperature value of the fan group is not greater than the preset threshold value.

[0105] Further, in an embodiment, the temperature control method of the backplane air conditioner further includes:

[0106] When it is detected that there is a fan group with a faulty fan, determine whether the number of normally operating fans in the fan group is less than the number of faulty fans;

[0107] If it is not less than, then increase the speed of all the normally operating fans in the fan group by a first rotation speed correction factor and operate for a second preset duration;

[0108] If it is less than, increase the speed of all normally operating fans in the backplane air conditioner according to the second speed correction coefficient and operate for the second preset duration.

[0109] In this embodiment, since the number of fans configured in the backplane air conditioner is relatively large, the probability of a certain fan failure in a backplane air conditioner is relatively high. When a non-critical failure occurs and only the fans in some independently controlled areas fail, if the control method during normal operation is continued, for the independent temperature control area where the faulty fan is located, there are not enough fans that can operate normally for supply / return air temperature control, and effective and accurate temperature control cannot be achieved, resulting in the temperature in the area corresponding to this fan group remaining too high.

[0110] Therefore, in the solution of this embodiment, under the normal operating condition of the backplane air conditioner, add measures to deal with fan failures to effectively avoid load fluctuations in the cooling system of the backplane air conditioner and maintain the adaptive operation of the cooling system of the backplane air conditioner when a failure occurs. Specifically, for the problem of fan failures, the temperature control method of the backplane air conditioner further includes: when it is detected that there is a fan group with a faulty fan, judge whether the number of normally operating fans in the above fan group is less than the number of faulty fans to determine whether the fans of other fan groups need to intervene.

[0111] If the number of normally operating fans in the above fan group is not less than the number of faulty fans, it means that the number of normally operating fans in the fan group at this time is not less than the number of faulty fans, and the hot spot can be eliminated only by increasing the speed of the normally operating fans in the fan group. Then, at this time, only need to correct the speed of all normally operating fans in the fan group with the faulty fan, operate for the second preset duration at the increased speed, and then cancel the correction and restore the normal logic control. Among them, the speed correction coefficient f(x) at this time = 1 + 1 / Xon, and Xon is the number of normally operating fans in the fan group with the faulty fan.

[0112] If the number of normally operating fans in the above fan group is less than the number of faulty fans, it means that the number of normally operating fans in the fan group at this time is less than the number of faulty fans, and the hot spot cannot be eliminated only by increasing the speed of the normally operating fans in the fan group. Then, at this time, to reduce the hot spot existing in the area corresponding to this fan group due to fan failure, the assistance of other fan groups is needed to increase the speed of the fans in other fan groups to eliminate the hot spot, that is, it is necessary to correct the speed of all normally operating fans in the entire cooling system of the backplane air conditioner, operate for the second preset duration at the increased speed, and then cancel the correction and restore the normal logic control. Among them, the speed correction coefficient f(x) at this time = 1 + 1 / Aon, and Aon is the number of all normally operating fans in the entire cooling system of the backplane air conditioner.

[0113] In the above method, the cooperation of each fan group is increased in the backplane air conditioner, which can avoid the problem of inaccurate temperature control caused by the failure of the fan in a single fan group. On the basis of effectively eliminating hot spots, the adaptive operation of the fan failure can also be realized. Among them, for the fan group with a faulty fan, there is a relevant fault prompt alarm, which can facilitate the user to accurately locate the position of the faulty fan and correct the faulty fan in time.

[0114] Further, in an embodiment, the temperature control method of the backplane air conditioner further includes:

[0115] When a fan group with a faulty supply / return air temperature sensor is detected, it is detected whether there are other non-faulty supply / return air temperature sensors in the fan group;

[0116] If there are other non-faulty supply / return air temperature sensors in the fan group, the supply / return air temperature value of the fan group is calculated based on the supply / return air temperature detected by the other non-faulty supply / return air temperature sensors in the fan group;

[0117] If there are no other non-faulty supply / return air temperature sensors in the fan group, it is judged whether there is at least one supply / return air temperature value in other fan groups of the backplane air conditioner;

[0118] If there is at least one supply / return air temperature value in other fan groups of the backplane air conditioner, the maximum value of the supply / return air temperature values of other groups is taken as the supply / return air temperature value of the fan group;

[0119] If there is no supply / return air temperature value in other fan groups of the backplane air conditioner, it is judged whether the fan group has a return / supply air temperature value;

[0120] If the fan group has a return / supply air temperature value, the fan group is switched to return / supply air temperature control, and the refrigeration demand value of the fan group is determined based on the preset return / supply air temperature value and the return / supply air temperature value of the fan group;

[0121] If the fan group has no return / supply air temperature value, it is judged whether there is at least one return / supply air temperature value in other fan groups of the backplane air conditioner;

[0122] If there is at least one return / supply air temperature value in other fan groups of the backplane air conditioner, the maximum value of the supply / return air temperature values of other groups is taken as the return / supply air temperature value of the fan group;

[0123] If there is no return / supply air temperature value in other fan groups of the backplane air conditioner, all the normally operating fans of the backplane air conditioner are controlled to run at the maximum speed.

[0124] In this embodiment, since the number of sensors configured in the backplane air conditioner is relatively large, the probability of a certain temperature sensor failure in one backplane air conditioner is relatively high. When the return / supply air temperature sensors in some independent control areas fail, the measured return / supply air temperature values of the corresponding fan groups may deviate significantly from the actual temperature. There will also be problems with the determined cooling demand values based on the measured return / supply air temperature values. If the control method during normal operation is continued to be used, for the independent temperature control area where the faulty temperature sensor is located, the fan speeds of each fan group determined based on the cooling demand value will be insufficient or excessive, and effective and precise temperature control cannot be achieved, resulting in the temperature of the area corresponding to this fan group remaining too high or too low continuously.

[0125] Therefore, in the solution of this embodiment, under the normal operating condition of the backplane air conditioner, countermeasures for temperature sensor failures are added to effectively avoid load fluctuations in the cooling system of the backplane air conditioner and at the same time maintain the adaptive operation of the cooling system of the backplane air conditioner when a failure occurs. Specifically, taking the backplane air conditioner using the return air temperature value for control as an example, referring to Figure 6 , Figure 6 which is a schematic flow chart of the temperature control method of the backplane air conditioner when a temperature sensor fails. For the problem of temperature sensor failure, the temperature control method of the backplane air conditioner further includes:

[0126] When the fan group Team-X with a faulty return air temperature sensor Th-x1 is detected, it is detected whether there are other non-faulty return air temperature sensors in the fan group Team-X;

[0127] If there are other non-faulty return air temperature sensors in the fan group Team-X, the fan group Team-X excludes the detection value of Th-x1, and calculates the return air temperature value of the fan group based on the return air temperatures detected by other non-faulty return air temperature sensors in the fan group Team-X;

[0128] If there are no other non-faulty return air temperature sensors in the fan group Team-X, it is judged whether there is at least one return air temperature value in other fan groups of the backplane air conditioner;

[0129] If there is at least one return air temperature value Th-x in other fan groups of the backplane air conditioner, the maximum value Max = {Th1, Th2,...} of the return / supply air temperature values of other groups is taken as the return air temperature value of the fan group;

[0130] Since the return air temperature control calculates the cooling demand by comparing the detected return air temperature with the set return air temperature value, if all the return air temperature sensors of the backplane air conditioner fail, the calculation process cannot be executed. If the fan group has a supply air temperature value, the fan group is switched to supply air temperature control, and the cooling demand value of the fan group is determined based on the preset supply air temperature value and the supply air temperature value of the fan group;

[0131] If the fan unit Team-X has no supply air temperature value Ts-x1, then determine whether at least one of the other fan units of the backplane air conditioner has a supply air temperature value Ts-x;

[0132] If at least one of the other fan units of the backplane air conditioner has a supply air temperature value Ts-x, then take the maximum value Max={Ts1, Ts2,...} of the supply / return air temperature values of the other groups as the supply air temperature value of the fan unit;

[0133] If none of the other fan units of the backplane air conditioner have a supply air temperature value, then the supply / return air temperature sensors of the backplane air conditioner are all faulty and the cooling demand calculation cannot be performed. Triggered by reliability, it is defaulted that the cooling demand is the largest at this time, and all the normally operating fans of the backplane air conditioner are controlled to run at the maximum speed.

[0134] Similarly, the above control is also applicable to the case where the supply air temperature control is initially adopted. After all the return air temperature sensors of the backplane air conditioner fail, it switches to the return air temperature control. When the supply / return air temperature sensors of the backplane air conditioner are all faulty and the cooling demand calculation cannot be performed, triggered by reliability, it is defaulted that the cooling demand is the largest at this time, and all the normally operating fans of the backplane air conditioner are controlled to run at the maximum speed.

[0135] The above method increases the coordination of each fan unit in the backplane air conditioner and the automatic switching between the return air temperature control and the supply air temperature control, which can avoid the problem of inaccurate temperature control caused by the failure of the temperature sensor of a single fan unit. On the basis of effectively eliminating hot spots, it can also achieve the adaptive operation of the temperature sensor failure. Among them, there are relevant fault prompt alarms for the fan units with faulty temperature sensors, which can facilitate the user to accurately locate the position of the faulty temperature sensor and promptly correct the faulty fan.

[0136] In this embodiment, a temperature control method for a backplane air conditioner is provided, including: dividing the backplane air conditioner corresponding to each cabinet into several areas, where each area includes a fan group, and each fan group includes several supply / return air temperature sensors and several fans, and each fan group is independently controlled; when the backplane air conditioner is operating normally, calculating the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group; determining the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature value of the fan group; and controlling the fans in each fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located. The present invention independently controls the fans in each fan group within the area. Under the normal operating conditions of the backplane air conditioner, the cooling capacity range of the cooling system of the backplane air conditioner can be maximized. Compared with the traditional control method of the cooling system of the backplane air conditioner, its cooling capacity adjustment is smoother and more uniform, the hot spots of the return air of the cabinet can be effectively controlled, and the phenomenon of uneven temperature field inside the cabinet can be effectively solved. And on this basis, when the temperature exceeds the limit, or the fan or the supply / return air temperature sensor fails, the cooperation and fault response measures of each fan group are increased, which can avoid the problem of the temperature of a single fan group exceeding the limit, and avoid the load fluctuation of the cooling system of the backplane air conditioner, and maintain its adaptive operation under fault conditions.

[0137] In a third aspect, an embodiment of the present invention further provides a temperature control device for a backplane air conditioner.

[0138] Referring to Figure 7 , a schematic diagram of the functional modules of an embodiment of the temperature control device for a backplane air conditioner.

[0139] In this embodiment, the temperature control device for the backplane air conditioner includes:

[0140] A zoning module 40, configured to divide the backplane air conditioner corresponding to each cabinet into several areas, where each area includes a fan group, and each fan group includes several supply / return air temperature sensors and several fans, and each fan group is independently controlled;

[0141] A determination module 20, configured to, when the backplane air conditioner is operating normally, calculate the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group, and determine the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature value of the fan group;

[0142] A control module 30, configured to control the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located.

[0143] Further, in an embodiment, the control module 30 is configured to:

[0144] If the refrigeration demand value is within the first preset range, control each fan of the fan group to operate at the maximum speed;

[0145] If the refrigeration demand value is within the second preset range, calculate the target speed according to the first formula, and control each fan of the fan group to operate at the target speed;

[0146] If the refrigeration demand value is within the third preset range, control the fans in the fan group to be turned off according to a preset ratio, and control the fans that are not turned off in the fan group to operate at the minimum speed;

[0147] If the refrigeration demand value is within the fourth preset range, control all the fans in the fan group to be turned off.

[0148] Furthermore, in one embodiment, the temperature control device of the backplane air conditioner further includes a temperature overrun control module, which is used for:

[0149] If it is detected that all the fans of a fan group have reached the maximum speed, and the supply / return air temperature value of the fan group is greater than the preset threshold and the duration is greater than the first preset duration,

[0150] Then determine the refrigeration demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature values of other fan groups of the backplane air conditioner until at least one fan in the fan group has a speed less than the maximum speed, or the supply / return air temperature value of the fan group is not greater than the preset threshold.

[0151] Furthermore, in one embodiment, the temperature control device of the backplane air conditioner further includes a first fault control module, which is used for:

[0152] When it is detected that there is a fan group with a faulty fan, determine whether the number of normally operating fans in the fan group is less than the number of faulty fans;

[0153] If it is not less than, then increase the speed of all the normally operating fans in the fan group by the first speed correction coefficient and operate for the second preset duration;

[0154] If it is less than, then increase the speed of all the normally operating fans in the backplane air conditioner by the second speed correction coefficient and operate for the second preset duration.

[0155] Furthermore, in one embodiment, the temperature control device of the backplane air conditioner further includes a second fault control module, which is used for:

[0156] When it is detected that there is a fan group with a faulty supply / return air temperature sensor, detect whether there are other non-faulty supply / return air temperature sensors in the fan group;

[0157] If there are other non-faulty supply / return air temperature sensors in the fan unit, calculate the supply / return air temperature value of the fan unit based on the supply / return air temperature detected by other non-faulty supply / return air temperature sensors in the fan unit;

[0158] If there are no other non-faulty supply / return air temperature sensors in the fan unit, determine whether there is at least one supply / return air temperature value in other fan units of the backplane air conditioner;

[0159] If there is at least one supply / return air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the supply / return air temperature value of the fan unit;

[0160] If there is no supply / return air temperature value in other fan units of the backplane air conditioner, determine whether the fan unit has a return / supply air temperature value;

[0161] If the fan unit has a return / supply air temperature value, switch the fan unit to return / supply air temperature control, and determine the cooling demand value of the fan unit based on the preset return / supply air temperature value and the return / supply air temperature value of the fan unit;

[0162] If the fan unit has no return / supply air temperature value, determine whether there is at least one return / supply air temperature value in other fan units of the backplane air conditioner;

[0163] If there is at least one return / supply air temperature value in other fan units of the backplane air conditioner, take the maximum value of the supply / return air temperature values of other groups as the return / supply air temperature value of the fan unit;

[0164] If there is no return / supply air temperature value in other fan units of the backplane air conditioner, control all the normally operating fans of the backplane air conditioner to run at the maximum speed.

[0165] Among them, the function implementation of each module in the temperature control device of the above backplane air conditioner corresponds to each step in the embodiment of the temperature control method of the above backplane air conditioner, and its function and implementation process will not be elaborated here one by one.

[0166] Fourthly, the embodiment of the present invention also provides a readable storage medium.

[0167] The readable storage medium of the present invention stores a temperature control program for the backplane air conditioner. When the temperature control program for the backplane air conditioner is executed by a processor, the steps of the temperature control method for the backplane air conditioner as described above are implemented.

[0168] Among them, the method implemented when the temperature control program for the backplane air conditioner is executed can refer to each embodiment of the temperature control method for the backplane air conditioner of the present invention, and will not be elaborated here.

[0169] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or system comprising that element.

[0170] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0171] From the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device to execute the methods described in the various embodiments of the present invention.

[0172] The above are only the preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A temperature control method for a back panel air conditioner, characterized in that, The temperature control method of the backplane air conditioner includes: Dividing the backplane air conditioner corresponding to each cabinet into several zones, each zone including a fan group, and each fan group including several supply / return air temperature sensors and several fans, where each fan group is independently controlled; When the backplane air conditioner is operating normally, calculating the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in the fan group, and determining the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature value of the fan group; Controlling the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located; The temperature control method of the backplane air conditioner further includes: When detecting a fan group with a faulty fan, determining whether the number of normally operating fans in the fan group is less than the number of faulty fans; If it is not less than, then accelerating the operation of all the normally operating fans in the fan group at the first speed correction coefficient for a second preset duration; the first speed correction coefficient f(x) = 1 + 1 / Xon, where Xon is the number of normally operating fans in the above-mentioned fan group with a faulty fan; If it is less than, then accelerating the operation of all the normally operating fans in the backplane air conditioner at the second speed correction coefficient for a second preset duration; the second speed correction coefficient f(x) = 1 + 1 / Aon, where Aon is the number of all the normally operating fans in the entire backplane air conditioner cooling system.

2. The temperature control method of the backplane air conditioner according to claim 1, wherein, The step of controlling the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located includes: If the cooling demand value is in the first preset range, controlling each fan in the fan group to operate at the maximum speed; If the cooling demand value is in the second preset range, calculating the target speed according to the first formula, and controlling each fan in the fan group to operate at the target speed; If the cooling demand value is in the third preset range, controlling the fans in the fan group to be turned off according to a preset ratio, and controlling the fans not turned off in the fan group to operate at the minimum speed; If the cooling demand value is in the fourth preset range, controlling all the fans in the fan group to be turned off.

3. A temperature control device for a backplane air conditioner based on the method described in claim 1, characterized in that, The temperature control device of the backplane air conditioner includes: A zoning module for dividing the backplane air conditioner corresponding to each cabinet into several zones, each zone including a fan group, and each fan group including several supply / return air temperature sensors and several fans, where each fan group is independently controlled; A determination module for calculating the supply / return air temperature value of the fan group based on the supply / return air temperatures monitored by the several supply / return air temperature sensors in each fan group when the backplane air conditioner is operating normally, and determining the cooling demand value of the fan group based on the preset supply / return air temperature value and the supply / return air temperature value of the fan group; A control module for controlling the fans in the fan group according to the corresponding control strategy based on the range where the cooling demand value of the fan group is located.

4. The temperature control device of the back panel air conditioner according to claim 3, characterized in that, The control template is used for: If the cooling demand value is in the first preset range, controlling each fan in the fan group to operate at the maximum speed; If the refrigeration demand value is within the second preset range, calculate the target speed according to the first formula, and control each fan of the fan group to operate at the target speed; If the refrigeration demand value is within the third preset range, control the fans in the fan group to be turned off according to a preset ratio, and control the fans that are not turned off in the fan group to operate at the minimum speed; If the refrigeration demand value is within the fourth preset range, control all the fans in the fan group to be turned off.

5. A temperature control device for a back panel air conditioner, characterized in that, The temperature control device of the backplane air conditioner includes a processor, a memory, and a temperature control program of the backplane air conditioner stored on the memory and executable by the processor. When the temperature control program of the backplane air conditioner is executed by the processor, the steps of the temperature control method of the backplane air conditioner according to any one of claims 1 to 2 are implemented.

6. A readable storage medium, characterized in that, The readable storage medium stores a temperature control program of the backplane air conditioner. When the temperature control program of the backplane air conditioner is executed by the processor, the steps of the temperature control method of the backplane air conditioner according to any one of claims 1 to 2 are implemented.

Images