Air cooling unit control method, storage medium and electronic device

Abstract

The invention discloses an air cooling unit control method, a storage medium and an electronic device, and relates to the technical field of air cooling unit control, an air cooling unit comprises fixed-frequency draught fans and variable-frequency draught fans, the fixed-frequency draught fans and the variable-frequency draught fans are alternately arranged, and by monitoring operation information and environment temperature of the air cooling unit, according to the operation information and the environment temperature of the air cooling unit, the variable-frequency draught fans are controlled according to the operation information and the environment temperature of the air cooling unit; and the fixed-frequency fan and the variable-frequency fan are controlled to work. By combining the advantages of relatively simple structure, long service life and convenience in maintenance of the fixed-frequency fans and the advantages of wide air volume control range, small output fluctuation and relatively stability of the variable-frequency fans, the air cooling unit is formed at lower cost, and meanwhile, the fixed-frequency fans and the variable-frequency fans are alternately arranged, so that the air cooling efficiency is improved. The optimal efficiency can be achieved when the air cooling unit is controlled to work according to the operation information of the air cooling unit and the environment temperature.

Description

Technical Field

[0001] The present application relates to the technical field of air-cooling unit control, and in particular to an air-cooling unit control method, a storage medium and an electronic device. Background Art

[0002] Since computing and storage devices for supercomputers, the Internet, and communications must dissipate heat continuously, any failure in the cooling method will lead to serious consequences. Air-cooled units are widely used because of their small footprint and easy installation.

[0003] In the prior art, all fans in air-cooled units are fixed-frequency fans. During low-temperature cooling, the air volume regulation changes suddenly, the exhaust pressure and pressure ratio change greatly, the cooling capacity output fluctuates greatly, and the control is unstable.

[0004] If all fans are variable frequency fans, although cooling is relatively flexible at low temperatures, the air-cooled units basically do not need to be fully opened to the maximum. At high temperatures, the fans reach maximum output, which does not reflect the advantages of variable frequency fans. In addition, variable frequency fans are expensive and relatively complex to maintain. Summary of the invention

[0005] The present application provides a method for controlling an air-cooling unit, which is used to solve the defects of the prior art that all fans in the air-cooling unit are fixed-frequency fans, resulting in large output fluctuations and unstable control of the air-cooling unit. By alternately arranging fixed-frequency fans and variable-frequency fans, combined with the advantages of relatively simple structure, long life, and easy maintenance of fixed-frequency fans, and the advantages of wide air volume control range, small control fluctuations and relatively stable control of variable-frequency fans, an air-cooling unit can be formed at a relatively low cost, and optimal efficiency can be achieved when controlling the operation of the air-cooling unit.

[0006] The present application provides a control method for an air-cooling unit, wherein the air-cooling unit comprises a fixed-frequency fan and a variable-frequency fan, wherein the fixed-frequency fan and the variable-frequency fan are arranged alternately, and the method comprises:

[0007] Monitor the operation information and ambient temperature of air-cooled units;

[0008] The fixed-frequency fan and the variable-frequency fan are controlled to operate according to the air-cooling unit operation information and the ambient temperature.

[0009] According to a method for controlling an air-cooling unit provided in the present application, the air-cooling unit further comprises a compressor; the operation information of the air-cooling unit comprises a compressor status;

[0010] According to the air cooling unit operation information and the ambient temperature, controlling the fixed frequency fan and the variable frequency fan to operate includes:

[0011] When the compressor is in the starting state, determining a first target fan operation scheme from a plurality of preset first fan operation schemes corresponding to the ambient temperature according to the ambient temperature;

[0012] According to the first target fan operation plan, the fixed-frequency fan and the variable-frequency fan are controlled to operate.

[0013] According to a method for controlling an air-cooling unit provided by the present application, the plurality of preset first fan working schemes corresponding to the ambient temperature include:

[0014] When the ambient temperature is lower than a preset first temperature value, controlling the fixed-frequency fan and the variable-frequency fan not to start;

[0015] When the ambient temperature is greater than or equal to the first temperature value and less than a preset second temperature value, the variable frequency fan is controlled to start with an output voltage and a fan speed corresponding to a preset variable frequency fan gear position;

[0016] When the ambient temperature is greater than or equal to the second temperature value, the fixed-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset fixed-frequency fan gear, in sequence at intervals of a first preset time length, and after all the fixed-frequency fans have been started for a second preset time length, the variable-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset variable-frequency fan gear;

[0017] When the ambient temperature is greater than the preset limit value corresponding to the ambient temperature, the fixed-frequency fan is controlled to start with the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to start with the output voltage and fan speed corresponding to the highest gear.

[0018] According to a control method for an air-cooled unit provided by the present application, the air-cooled unit further comprises a compressor; the operation information of the air-cooled unit comprises a compressor state, exhaust pressure, absolute pressure ratio, a preset limit value corresponding to the ambient temperature, a preset limit value corresponding to the exhaust pressure, and a preset limit value corresponding to the absolute pressure ratio;

[0019] According to the compressor operation information and the ambient temperature, controlling the fixed frequency fan and the variable frequency fan to operate includes:

[0020] When the compressor is in normal operation and the exhaust pressure is less than a preset exhaust pressure lower limit, the fixed frequency fan and the variable frequency fan are controlled to stop running;

[0021] When the compressor is in normal operation, and the exhaust pressure is greater than or equal to the exhaust pressure lower limit, and the exhaust pressure is less than a preset exhaust pressure upper limit, a second target fan operation scheme is determined from a plurality of preset second fan operation schemes corresponding to the absolute pressure ratio according to the absolute pressure ratio; and the fixed frequency fan and the variable frequency fan are controlled to operate according to the second target fan operation scheme;

[0022] When the compressor is in normal operation and any one of the ambient temperature, the exhaust pressure and the absolute pressure ratio is greater than the corresponding preset limit value, the fixed-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the highest gear.

[0023] According to a method for controlling an air-cooling unit provided by the present application, the air-cooling unit operation information further includes the operation status of the fan;

[0024] The plurality of preset second fan operation schemes corresponding to the absolute pressure ratio include:

[0025] When the absolute pressure ratio is greater than or equal to a preset absolute pressure ratio lower limit value, and the absolute pressure ratio is less than a preset absolute pressure ratio upper limit value, the fan speeds corresponding to the current gear positions of the fixed-frequency fan and the variable-frequency fan are maintained;

[0026] When the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, the fixed-frequency fan and the variable-frequency fan are controlled to operate according to the fan operating state.

[0027] According to a method for controlling an air-cooled unit provided by the present application, when the absolute pressure ratio is greater than the upper limit value of the absolute pressure ratio or the absolute pressure ratio is less than the lower limit value of the absolute pressure ratio, controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state, including:

[0028] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the fan operation state is that only the variable frequency fan is running, the gear position of the variable frequency fan is increased at intervals of a preset upshift time;

[0029] When the absolute pressure ratio is greater than the absolute pressure ratio upper limit value, and the fan operating state is that the variable frequency fans are all running at the highest gear, the fixed frequency fans are started in sequence at a preset start time interval and a preset start sequence, and the fixed frequency fans are controlled to operate at the output voltage and fan speed corresponding to the fixed frequency fan gear.

[0030] According to a method for controlling an air-cooled unit provided by the present application, when the absolute pressure ratio is greater than the upper limit value of the absolute pressure ratio or the absolute pressure ratio is less than the lower limit value of the absolute pressure ratio, controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state, including:

[0031] When the absolute pressure ratio is less than the absolute pressure ratio lower limit value and the fan operation state is that only the variable frequency fan is running, the gear position of the variable frequency fan is reduced at intervals of a preset downshifting time;

[0032] When the absolute pressure ratio is less than the absolute pressure ratio lower limit value, and the fan operation state is that the variable frequency fan and the fixed frequency fan are in operation, the gear of the variable frequency fan is reduced with the preset downshifting time as an interval; when the gear of the variable frequency fan is reduced to the preset gear, the fixed frequency fans are turned off in sequence with the preset closing time interval and the preset closing order.

[0033] The present application also provides an air-cooling unit control device, the air-cooling unit comprising a fixed-frequency fan and a variable-frequency fan, the fixed-frequency fan and the variable-frequency fan are arranged alternately, and the device comprises:

[0034] The present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute any of the above-mentioned air-cooling unit control methods through the computer program.

[0035] The present application also provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is run, it executes and implements any of the above-mentioned air-cooling unit control methods.

[0036] The present application also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the air-cooling unit control method described above is implemented.

[0037] The present application provides an air-cooling unit control method, storage medium and electronic device, wherein the air-cooling unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately, and the fixed-frequency fan and the variable-frequency fan are controlled to work according to the air-cooling unit operation information and ambient temperature by monitoring the air-cooling unit operation information and ambient temperature. Combining the advantages of the fixed-frequency fan having a relatively simple structure, long life and easy maintenance, and the advantages of the variable-frequency fan having a wide air volume control range and relatively stable control fluctuation, the air-cooling unit can be formed at a relatively low cost, and by alternately arranging the fixed-frequency fan and the variable-frequency fan, the optimal efficiency can be achieved when the air-cooling unit is controlled according to the air-cooling unit operation information and ambient temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] Figure 1 It is a flow chart of the air-cooling unit control method provided by the present application;

[0041] Figure 2 It is a schematic diagram of the alternating arrangement of variable frequency fans and fixed frequency fans in the air cooling unit provided by the present application;

[0042] Figure 3 It is a structural schematic diagram of the air-cooling unit control device provided by the present application;

[0043] Figure 4 It is a schematic diagram of the structure of the electronic device provided in this application. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] The present application provides a method for controlling an air-cooling unit, wherein the air-cooling unit comprises a fixed-frequency fan and a variable-frequency fan, wherein the fixed-frequency fan and the variable-frequency fan are arranged alternately, such as Figure 1 As shown, the method includes:

[0047] S11, monitor the operation information and ambient temperature of the air-cooled unit;

[0048] S12. Controlling the fixed-frequency fan and the variable-frequency fan to operate according to the air-cooling unit operation information and the ambient temperature.

[0049] Specifically, the number of fixed-frequency fans and variable-frequency fans in the air-cooling unit can be set according to actual needs. Figure 2 As shown, the fixed frequency fans VF1-VF4 and the variable frequency fans FF1-FF4 are arranged alternately, and the fixed frequency fans and the variable frequency fans each form a V-shaped channel.

[0050] In the embodiment of the present application, the air-cooling unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. The operation information of the air-cooling unit and the ambient temperature are monitored, and the operation of the fixed-frequency fan and the variable-frequency fan is controlled according to the operation information of the air-cooling unit and the ambient temperature. Combining the advantages of the fixed-frequency fan having a relatively simple structure, long life, and easy maintenance, and the advantages of the variable-frequency fan having a wide air volume control range, small output fluctuation, and relatively stable, the air-cooling unit is formed at a relatively low cost. At the same time, by arranging the fixed-frequency fan and the variable-frequency fan alternately, the optimal efficiency can be achieved when the operation of the air-cooling unit is controlled according to the operation information of the air-cooling unit and the ambient temperature.

[0051] According to the air-cooling unit control method provided in the present application, the air-cooling unit further includes a compressor; the air-cooling unit operation information includes the compressor status;

[0052] Step S12 includes:

[0053] S21, when the compressor is in the starting state, determining, according to the ambient temperature, a first target fan operating scheme from a plurality of preset first fan operating schemes corresponding to the ambient temperature;

[0054] S22. According to the first target fan operation plan, control the fixed-frequency fan and the variable-frequency fan to operate.

[0055] Specifically, when the compressor is starting, multiple first fan operation schemes can be preset according to different ambient temperatures. In actual applications, the first target fan operation scheme is determined and executed according to the ambient temperature, thereby controlling the operation of the fixed frequency fan and the variable frequency fan.

[0056] Furthermore, the plurality of preset first fan operation schemes corresponding to the ambient temperature may include:

[0057] A) when the ambient temperature is lower than a preset first temperature value, controlling the fixed-frequency fan and the variable-frequency fan not to start;

[0058] B) when the ambient temperature is greater than or equal to the first temperature value and less than a preset second temperature value, controlling the variable frequency fan to start with an output voltage and a fan speed corresponding to a preset variable frequency fan gear position;

[0059] C) when the ambient temperature is greater than or equal to the second temperature value, controlling the fixed-frequency fans to start at the output voltage and fan speed corresponding to the preset fixed-frequency fan gear, in sequence at intervals of a first preset time, and after all the fixed-frequency fans have been started for a second preset time, controlling the variable-frequency fans to start at the output voltage and fan speed corresponding to the preset variable-frequency fan gear;

[0060] D) When the ambient temperature is greater than a preset limit value corresponding to the ambient temperature, the fixed-frequency fan is controlled to start with an output voltage and a fan speed corresponding to a preset variable-frequency fan gear, and the variable-frequency fan is controlled to start with an output voltage and a fan speed corresponding to a highest gear.

[0061] The first temperature value and the second temperature value can be set according to actual needs.

[0062] The variable frequency fan gear and its corresponding output voltage and fan speed of the variable frequency fan, as well as the fixed frequency fan gear and its corresponding output voltage and fan speed of the fixed frequency fan, can also be set according to actual needs.

[0063] The first preset time length and the second preset time length can be set according to actual needs.

[0064] Preferably, to ensure stable startup of all fans, the second preset time can be set to be greater than the first preset time, and the variable frequency fan can be started after all fixed frequency fans have been started for a period of time (greater than the interval between starting the fixed frequency fans).

[0065] In an example, the first temperature value may be set to -5°C (degrees Celsius), the second temperature value may be set to 10°C (degrees Celsius), TA represents the ambient temperature, and the preset limit value corresponding to the ambient temperature is 15°C.

[0066] The fixed-frequency fan gears of the fixed-frequency fan are gear 0 (off) and gear 1 (on). The fixed-frequency fan gear 1 corresponds to an output voltage (DC) of 3V and a fan speed of 320rpm.

[0067] The variable frequency fan gears and their corresponding output voltages and fan speeds are shown in Table 1:

[0068] Table 1. Relationship between variable frequency fan gear positions and their corresponding output voltage and fan speed

[0069] Frequency conversion fan gear Output voltage V (DC) Fan speed rpm 0 0 0 1 1.5 185 2 2 230 3 2.5 275 4 3 320 5 3.5 374 6 4 430 7 4.5 485 8 5 550 9 6 634 10 7 740 11 8 850 12 9 960 13 10 1082

[0070] The working scheme A of the first blower: When TA < -5°C, control the fixed-frequency blowers FF1-FF4 and the variable-frequency blowers VF1-VF4 not to start.

[0071] The working scheme B of the first blower: When -5°C ≤ TA < 10°C, control the variable-frequency blowers VF1-VF4 to start with the output voltage and blower speed corresponding to the 8th gear.

[0072] The working scheme C of the first blower: When 10°C ≤ TA, control the fixed-frequency blowers FF1-FF4 to start in turn at intervals of 1 second with the output voltage and blower speed corresponding to the 1st gear of the fixed-frequency blower. After 5 seconds when all the fixed-frequency blowers are started, control the variable-frequency blowers VF1-VF4 to start simultaneously with the output voltage and blower speed corresponding to the 4th gear.

[0073] The working scheme D of the first blower: When 15°C < TA, control the fixed-frequency blowers FF1-FF4 to start simultaneously, and control the variable-frequency blowers VF1-VF4 to start simultaneously with the output voltage and blower speed corresponding to the 13th gear.

[0074] In the embodiment of the present application, when the ambient temperature is relatively low, there is no need to cool down and dissipate heat, and control all blowers not to start to save energy; when the ambient temperature rises and cooling and heat dissipation are required, only the variable-frequency blowers are turned on for cooling to facilitate subsequent control of the variable-frequency blowers to change gears and flexibly control the heat dissipation effect; when the ambient temperature is relatively high and the demand for cooling and heat dissipation is high, the fixed-frequency blowers are preferentially turned on for cooling. The instantaneous power can be reduced by the interval start method to prevent overload and enable the fixed-frequency blowers to start stably. Then, by turning on the variable-frequency blowers to assist in heat dissipation, the heat dissipation efficiency of the air-cooled unit can be maximized; when the ambient temperature exceeds the ambient temperature limit value, at this time, control all fixed-frequency blowers to start and control all variable-frequency blowers to start at the highest gear for maximum heat dissipation.

[0075] According to the air-cooled unit control method provided by the present application, the air-cooled unit further includes a compressor; the operating information of the air-cooled unit includes the compressor state, the exhaust pressure, the absolute pressure ratio, the preset limit value corresponding to the ambient temperature, the preset limit value corresponding to the exhaust pressure, and the preset limit value corresponding to the absolute pressure ratio;

[0076] Step S12 includes:

[0077] S31. When the compressor state is normal operation and the exhaust pressure is less than the preset lower limit value of the exhaust pressure, control the fixed-frequency blower and the variable-frequency blower to stop running;

[0078] S32, when the compressor is in normal operation, and the exhaust pressure is greater than or equal to the exhaust pressure lower limit, and the exhaust pressure is less than a preset exhaust pressure upper limit, determining a second target fan operation scheme from a plurality of preset second fan operation schemes corresponding to the absolute pressure ratio according to the absolute pressure ratio; and controlling the fixed frequency fan and the variable frequency fan to operate according to the second target fan operation scheme;

[0079] S33. When the compressor is in normal operation and any one of the ambient temperature, the exhaust pressure and the absolute pressure ratio is greater than the corresponding preset limit value, the fixed-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the highest gear.

[0080] Among them, the exhaust pressure is used to indicate the pressure generated when the compressor is exhausting, and the absolute pressure ratio is used to indicate the degree to which the air inside the compressor is compressed. The absolute pressure ratio can be used to understand the speed demand of the air-cooled unit. An increase in the absolute pressure ratio indicates an increase in the speed demand of the fan, and a decrease in the absolute pressure ratio indicates a decrease in the speed demand of the fan.

[0081] When the compressor is operating normally, the exhaust pressure upper limit and the exhaust pressure lower limit can be preset, and multiple second fan working plans can be preset according to the relationship between the exhaust pressure, the exhaust pressure upper limit and the exhaust pressure lower limit. In actual application, the second target fan working plan is determined and executed according to the exhaust pressure, so as to control the operation of the fixed frequency fan and the variable frequency fan.

[0082] When the compressor is in normal operation and any one of the ambient temperature, exhaust pressure and absolute pressure ratio is greater than the corresponding preset limit value, it is an extreme situation and needs to dissipate heat as quickly as possible. The fixed-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the highest gear to achieve maximum heat dissipation.

[0083] Furthermore, the air-cooling unit operation information also includes a fan operation state; the plurality of preset second fan operation schemes corresponding to the absolute pressure ratio may include:

[0084] E) when the absolute pressure ratio is greater than or equal to a preset absolute pressure ratio lower limit value, and the absolute pressure ratio is less than a preset absolute pressure ratio upper limit value, maintaining the fan speeds corresponding to the current gear positions of the fixed-frequency fan and the variable-frequency fan;

[0085] F) when the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operating state.

[0086] Specifically, in the second fan working scheme E, the absolute pressure ratio is within the normal range. At this time, maintaining the normal speed to dissipate heat can maximize the heat dissipation effect and the working efficiency of the air-cooled unit.

[0087] In the second fan working scheme F, the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit, and the speed demand increases. The absolute pressure ratio is less than the absolute pressure ratio lower limit, and the speed demand decreases. When the speed demand increases or decreases, the fixed frequency fan and the variable frequency fan can be further controlled according to the fan operation state.

[0088] Specifically, the second fan working scheme F can be subdivided into a second fan working scheme F1 and a second fan working scheme F2. F1 corresponds to the situation where the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the speed demand increases; F2 corresponds to the situation where the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the speed demand decreases.

[0089] The second fan working scheme F1 includes:

[0090] S41, when the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit value, and the fan operation state is that only the variable frequency fan is running, increasing the gear position of the variable frequency fan at intervals of a preset gear-up time;

[0091] S42. When the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio and the fan operation state is that the variable frequency fans are all operating at the highest gear, the fixed frequency fans are started in sequence at a preset start time interval and a preset start sequence, and the fixed frequency fans are controlled to operate at the output voltage and fan speed corresponding to the fixed frequency fan gear.

[0092] Among them, the preset upshift duration, the preset start time interval and the preset start sequence can be set according to actual needs.

[0093] In an example, when the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio, that is, the speed demand is rising, if only the variable frequency fan is running, that is, no fixed frequency fan is running, then the gear of the variable frequency fan can be increased at intervals of 15 seconds, so that the gear of the variable frequency fan increases at a speed of 1 gear / 15 seconds.

[0094] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio, that is, the speed demand is rising, if all the variable frequency fans are already in the highest gear, that is, all the variable frequency fans are already running at the maximum speed, then you can start a fixed frequency fan every 30 seconds in the order of FF1-FF2-FF3-FF4, until the speed demand is out of the rising stage and stop starting the subsequent fixed frequency fans, or all fans are running at full speed.

[0095] The second fan working scheme F2 includes:

[0096] S51, when the absolute pressure ratio is less than the absolute pressure ratio lower limit value, and the fan operation state is that only the variable frequency fan is running, reducing the gear of the variable frequency fan at intervals of a preset downshifting time;

[0097] S52. When the absolute pressure ratio is less than the absolute pressure ratio lower limit value, and the fan operation state is that the variable frequency fan and the fixed frequency fan are in operation, the gear of the variable frequency fan is reduced at intervals of the preset downshifting time; when the gear of the variable frequency fan is reduced to the preset gear, the fixed frequency fans are turned off in sequence at preset closing time intervals and preset closing order.

[0098] Among them, the preset downshift duration, the preset shutdown time interval and the preset start sequence can be set according to actual needs.

[0099] In an example, when the absolute pressure ratio is less than the absolute pressure ratio lower limit, that is, in the speed demand decreasing stage, if only the variable frequency fan is running, the gear of the variable frequency fan can be reduced at intervals of 30 seconds, so that the gear of the variable frequency fan is reduced at a speed of 1 gear / 30 seconds until the speed demand is out of the decreasing stage and the gear of the variable frequency fan is stopped from being reduced, or the gears of all the variable frequency fans are changed to 0 and turned off.

[0100] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio, that is, in the speed demand reduction stage, if both variable frequency fans and fixed frequency fans are running, the variable frequency fans will first reduce the gear at a rate of 1 gear / 30 seconds. When the gear of the variable frequency fan is at gear 9, it has not yet left the speed demand reduction stage, and the speed still needs to be reduced, then in the order of FF1-FF2-FF3-FF4, one fixed frequency fan will be stopped every 60 seconds. If all fixed frequency fans are stopped and have not yet left the speed demand reduction stage, the conditions of the second fan working plan F1 are met, and the second fan working plan F1 is executed.

[0101] In the embodiment of the present application, the speed requirement is determined according to the absolute pressure ratio, and the operation of the variable frequency fan and the fixed frequency fan is controlled according to different fan operating states. Combined with the alternating arrangement of the variable frequency fan and the fixed frequency fan, when the operating parameters of the fan are changed within a larger range, the output fluctuation is small and relatively stable, so that the air-cooled unit can achieve optimal efficiency when working.

[0102] The air-cooling unit control device provided in the present application is described below. The air-cooling unit control device described below and the air-cooling unit control method described above can be referenced to each other.

[0103] The present application also provides a control device for an air-cooling unit, wherein the air-cooling unit comprises a fixed-frequency fan and a variable-frequency fan, wherein the fixed-frequency fan and the variable-frequency fan are arranged alternately. Figure 3 As shown, the device comprises:

[0104] Monitoring unit 31, used to monitor the operation information and ambient temperature of the air-cooled unit;

[0105] The control unit 32 is used to control the operation of the fixed-frequency fan and the variable-frequency fan according to the operation information of the air-cooling unit and the ambient temperature.

[0106] In the embodiment of the present application, the air-cooling unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. The operation information of the air-cooling unit and the ambient temperature are monitored, and the operation of the fixed-frequency fan and the variable-frequency fan is controlled according to the operation information of the air-cooling unit and the ambient temperature. Combining the advantages of the fixed-frequency fan having a relatively simple structure, long life, and easy maintenance, and the advantages of the variable-frequency fan having a wide air volume control range, small output fluctuation, and relatively stable, the air-cooling unit is formed at a relatively low cost. At the same time, by arranging the fixed-frequency fan and the variable-frequency fan alternately, the optimal efficiency can be achieved when the operation of the air-cooling unit is controlled according to the operation information of the air-cooling unit and the ambient temperature.

[0107] According to the air-cooling unit control device provided in the present application, the air-cooling unit further includes a compressor; the air-cooling unit operation information includes the compressor status;

[0108] According to the air cooling unit operation information and the ambient temperature, the control unit 32 is specifically used to:

[0109] When the compressor is in the starting state, determining a first target fan operation scheme from a plurality of preset first fan operation schemes corresponding to the ambient temperature according to the ambient temperature;

[0110] According to the first target fan operation plan, the fixed-frequency fan and the variable-frequency fan are controlled to operate.

[0111] According to the air-cooling unit control device provided in the present application, the plurality of preset first fan working schemes corresponding to the ambient temperature include:

[0112] When the ambient temperature is lower than a preset first temperature value, controlling the fixed-frequency fan and the variable-frequency fan not to start;

[0113] When the ambient temperature is greater than or equal to the first temperature value and less than a preset second temperature value, the variable frequency fan is controlled to start with an output voltage and a fan speed corresponding to a preset variable frequency fan gear position;

[0114] When the ambient temperature is greater than or equal to the second temperature value, the fixed-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset fixed-frequency fan gear, in sequence at intervals of a first preset time length, and after all the fixed-frequency fans have been started for a second preset time length, the variable-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset variable-frequency fan gear;

[0115] When the ambient temperature is greater than the preset limit value corresponding to the ambient temperature, the fixed-frequency fan is controlled to start with the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to start with the output voltage and fan speed corresponding to the highest gear.

[0116] According to the air-cooled unit control device provided by the present application, the air-cooled unit also includes a compressor; the air-cooled unit operation information includes the compressor state, exhaust pressure, absolute pressure ratio, a preset limit value corresponding to the ambient temperature, a preset limit value corresponding to the exhaust pressure, and a preset limit value corresponding to the absolute pressure ratio;

[0117] The control unit 32 is specifically used for:

[0118] When the compressor is in normal operation and the exhaust pressure is less than a preset exhaust pressure lower limit, the fixed frequency fan and the variable frequency fan are controlled to stop running;

[0119] When the compressor is in normal operation, and the exhaust pressure is greater than or equal to the exhaust pressure lower limit, and the exhaust pressure is less than a preset exhaust pressure upper limit, a second target fan operation scheme is determined from a plurality of preset second fan operation schemes corresponding to the absolute pressure ratio according to the absolute pressure ratio; and the fixed frequency fan and the variable frequency fan are controlled to operate according to the second target fan operation scheme;

[0120] When the compressor is in normal operation and any one of the ambient temperature, the exhaust pressure and the absolute pressure ratio is greater than the corresponding preset limit value, the fixed-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the highest gear.

[0121] According to the air-cooling unit control device provided in the present application, the air-cooling unit operation information also includes the fan operation status;

[0122] The plurality of preset second fan operation schemes corresponding to the absolute pressure ratio include:

[0123] When the absolute pressure ratio is greater than or equal to a preset absolute pressure ratio lower limit value, and the absolute pressure ratio is less than a preset absolute pressure ratio upper limit value, the fan speeds corresponding to the current gear positions of the fixed-frequency fan and the variable-frequency fan are maintained;

[0124] When the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, the fixed-frequency fan and the variable-frequency fan are controlled to operate according to the fan operating state.

[0125] According to the air-cooling unit control device provided by the present application, when the absolute pressure ratio is greater than the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, the fixed-frequency fan and the variable-frequency fan are controlled to work according to the fan operation state, including:

[0126] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the fan operation state is that only the variable frequency fan is running, the gear position of the variable frequency fan is increased at intervals of a preset upshift time;

[0127] When the absolute pressure ratio is greater than the absolute pressure ratio upper limit value, and the fan operating state is that the variable frequency fans are all running at the highest gear, the fixed frequency fans are started in sequence at a preset start time interval and a preset start sequence, and the fixed frequency fans are controlled to operate at the output voltage and fan speed corresponding to the fixed frequency fan gear.

[0128] According to the air-cooling unit control device provided by the present application, when the absolute pressure ratio is greater than the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, the fixed-frequency fan and the variable-frequency fan are controlled to work according to the fan operation state, including:

[0129] When the absolute pressure ratio is less than the absolute pressure ratio lower limit value and the fan operation state is that only the variable frequency fan is running, the gear position of the variable frequency fan is reduced at intervals of a preset downshifting time;

[0130] When the absolute pressure ratio is less than the absolute pressure ratio lower limit value, and the fan operation state is that the variable frequency fan and the fixed frequency fan are in operation, the gear of the variable frequency fan is reduced with the preset downshifting time as an interval; when the gear of the variable frequency fan is reduced to the preset gear, the fixed frequency fans are turned off in sequence with the preset closing time interval and the preset closing order.

[0131] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the air cooling unit control method, wherein the air cooling unit includes a fixed frequency fan and a variable frequency fan, and the fixed frequency fan and the variable frequency fan are arranged alternately, and the method includes: monitoring the operation information of the air cooling unit and the ambient temperature; and controlling the fixed frequency fan and the variable frequency fan to work according to the operation information of the air cooling unit and the ambient temperature.

[0132] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

[0133] On the other hand, the present application also provides a computer program product, which includes a computer program. The computer program can be stored on a computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air-cooling unit control method provided by the above methods. The air-cooling unit includes a fixed-frequency fan and a variable-frequency fan, and the fixed-frequency fan and the variable-frequency fan are arranged alternately. The method includes: monitoring the operating information of the air-cooling unit and the ambient temperature; controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the operating information of the air-cooling unit and the ambient temperature.

[0134] On the other hand, the present application also provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the air-cooling unit control method provided by the above methods is executed, the air-cooling unit includes a fixed-frequency fan and a variable-frequency fan, and the fixed-frequency fan and the variable-frequency fan are arranged alternately. The method includes: monitoring the operating information of the air-cooling unit and the ambient temperature; controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the operating information of the air-cooling unit and the ambient temperature.

[0135] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0136] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling an air-cooled unit, characterized in that: The air cooling unit comprises a fixed frequency fan and a variable frequency fan, the fixed frequency fan and the variable frequency fan are arranged alternately, and the method comprises: Monitor the operation information and ambient temperature of air-cooled units; The fixed-frequency fan and the variable-frequency fan are controlled to operate according to the air-cooling unit operation information and the ambient temperature.

2. The air cooling unit control method according to claim 1, characterized in that: The air-cooling unit further comprises a compressor; the operation information of the air-cooling unit comprises a compressor status; According to the air cooling unit operation information and the ambient temperature, controlling the fixed frequency fan and the variable frequency fan to operate includes: When the compressor is in the starting state, determining a first target fan operation scheme from a plurality of preset first fan operation schemes corresponding to the ambient temperature according to the ambient temperature; According to the first target fan operation plan, the fixed-frequency fan and the variable-frequency fan are controlled to operate.

3. The air cooling unit control method according to claim 2, characterized in that: The plurality of preset first fan operation schemes corresponding to the ambient temperature include: When the ambient temperature is lower than a preset first temperature value, controlling the fixed-frequency fan and the variable-frequency fan not to start; When the ambient temperature is greater than or equal to the first temperature value and less than a preset second temperature value, the variable frequency fan is controlled to start with an output voltage and a fan speed corresponding to a preset variable frequency fan gear position; When the ambient temperature is greater than or equal to the second temperature value, the fixed-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset fixed-frequency fan gear, in sequence at intervals of a first preset time length, and after all the fixed-frequency fans have been started for a second preset time length, the variable-frequency fans are controlled to start at an output voltage and a fan speed corresponding to a preset variable-frequency fan gear; When the ambient temperature is greater than the preset limit value corresponding to the ambient temperature, the fixed-frequency fan is controlled to start with the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to start with the output voltage and fan speed corresponding to the highest gear.

4. The air cooling unit control method according to claim 1, characterized in that: The air-cooled unit further includes a compressor; the air-cooled unit operation information includes compressor status, exhaust pressure, absolute pressure ratio, a preset limit value corresponding to the ambient temperature, a preset limit value corresponding to the exhaust pressure, and a preset limit value corresponding to the absolute pressure ratio; According to the compressor operation information and the ambient temperature, controlling the fixed frequency fan and the variable frequency fan to operate includes: When the compressor is in normal operation and the exhaust pressure is less than a preset exhaust pressure lower limit, the fixed frequency fan and the variable frequency fan are controlled to stop running; When the compressor is in normal operation, and the exhaust pressure is greater than or equal to the exhaust pressure lower limit, and the exhaust pressure is less than a preset exhaust pressure upper limit, a second target fan operation scheme is determined from a plurality of preset second fan operation schemes corresponding to the absolute pressure ratio according to the absolute pressure ratio; and the fixed frequency fan and the variable frequency fan are controlled to operate according to the second target fan operation scheme; When the compressor is in normal operation and any one of the ambient temperature, the exhaust pressure and the absolute pressure ratio is greater than the corresponding preset limit value, the fixed-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at the output voltage and fan speed corresponding to the highest gear.

5. The air cooling unit control method according to claim 4, characterized in that: The air-cooling unit operation information also includes the fan operation status; The plurality of preset second fan operation schemes corresponding to the absolute pressure ratio include: When the absolute pressure ratio is greater than or equal to a preset absolute pressure ratio lower limit value, and the absolute pressure ratio is less than a preset absolute pressure ratio upper limit value, the fan speeds corresponding to the current gear positions of the fixed-frequency fan and the variable-frequency fan are maintained; When the absolute pressure ratio is greater than or equal to the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, the fixed-frequency fan and the variable-frequency fan are controlled to operate according to the fan operating state.

6. The air cooling unit control method according to claim 5, characterized in that: When the absolute pressure ratio is greater than the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state includes: When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the fan operation state is that only the variable frequency fan is running, the gear position of the variable frequency fan is increased at intervals of a preset upshift time; When the absolute pressure ratio is greater than the absolute pressure ratio upper limit value, and the fan operating state is that the variable frequency fans are all running at the highest gear, the fixed frequency fans are started in sequence at a preset start time interval and a preset start sequence, and the fixed frequency fans are controlled to operate at the output voltage and fan speed corresponding to the fixed frequency fan gear.

7. The air cooling unit control method according to claim 5, characterized in that: When the absolute pressure ratio is greater than the absolute pressure ratio upper limit or the absolute pressure ratio is less than the absolute pressure ratio lower limit, controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state includes: When the absolute pressure ratio is less than the absolute pressure ratio lower limit value and the fan operation state is that only the variable frequency fan is running, the gear of the variable frequency fan is reduced at intervals of a preset downshifting time; When the absolute pressure ratio is less than the absolute pressure ratio lower limit value, and the fan operation state is that the variable frequency fan and the fixed frequency fan are in operation, the gear of the variable frequency fan is reduced with the preset downshifting time as an interval; when the gear of the variable frequency fan is reduced to the preset gear, the fixed frequency fans are turned off in sequence with the preset closing time interval and the preset closing order.

8. A control device for an air-cooled unit, characterized in that: The air cooling unit includes a fixed frequency fan and a variable frequency fan, the fixed frequency fan and the variable frequency fan are arranged alternately, and the device includes: Monitoring unit, used to monitor the operation information and ambient temperature of the air-cooled unit; A control unit is used to control the operation of the fixed-frequency fan and the variable-frequency fan according to the operation information of the air-cooling unit and the ambient temperature.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 7 when executed.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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