Air-cooled unit control method, storage medium and electronic device

Abstract

The application discloses a kind of air-cooled unit control control method, storage medium and electronic device, it is related to air-cooled unit control technical field, air-cooled unit includes fixed frequency fan and frequency conversion fan, fixed frequency fan and frequency conversion fan are alternately arranged, by monitoring air-cooled unit operating information and ambient temperature, according to air-cooled unit operating information and ambient temperature, control fixed frequency fan and frequency conversion fan work.Combining the advantages that fixed frequency fan structure is relatively simple, long service life, easy to maintain, and the advantages that frequency conversion fan air volume control range is extensive, output fluctuation is small and relatively stable, realize by lower cost composition air-cooled unit, simultaneously by alternately arranging fixed frequency fan and frequency conversion fan, when according to air-cooled unit operating information and ambient temperature control air-cooled unit work, optimal efficiency can be achieved.

Description

Technical Field

[0001] This application relates to the field of air-cooled unit control technology, and in particular to a control method, storage medium and electronic device for air-cooled units. Background Technology

[0002] Because supercomputers, internet and communication computing and storage devices require continuous heat dissipation, any failure in the cooling system can lead to serious consequences. Air-cooled units are widely used due to their small footprint and ease of installation.

[0003] In the existing technology, the fans in air-cooled units are all fixed-frequency fans. When cooling at low temperatures, the air volume adjustment changes abruptly, and the exhaust pressure and pressure ratio change significantly, resulting in large fluctuations in cooling capacity output and unstable control.

[0004] If all the fans are variable frequency fans, although the cooling is more flexible at low temperatures, the air-cooled units basically do not need to be fully turned on. At high temperatures, the fans reach their maximum output, so the advantages of variable frequency fans cannot be demonstrated. In addition, variable frequency fans are expensive and relatively complicated to maintain. Summary of the Invention

[0005] This application provides a control method for air-cooled units to address the shortcomings of existing air-cooled units, which use only fixed-frequency fans, leading to large output fluctuations and unstable control. By alternating fixed-frequency and variable-frequency fans, combining the advantages of fixed-frequency fans (relatively simple structure, long lifespan, and easy maintenance) with the advantages of variable-frequency fans (wide airflow control range, small control fluctuations, and relatively stable operation), this method achieves optimal efficiency while assembling air-cooled units at a lower cost.

[0006] This application provides a control method for an air-cooled unit, the air-cooled unit including 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 includes:

[0007] Monitor the operating information and ambient temperature of the air-cooled unit;

[0008] Based on the operating information of the air-cooled unit and the ambient temperature, the operation of the fixed-frequency fan and the variable-frequency fan is controlled.

[0009] According to the air-cooled unit control method provided in this application, the air-cooled unit further includes a compressor; the air-cooled unit operating information includes the compressor status;

[0010] Based on the operating information of the air-cooled unit and the ambient temperature, control the operation of the fixed-frequency fan and the variable-frequency fan, including:

[0011] When the compressor is in the start-up state, based on the ambient temperature, a first target fan operation scheme is determined from a plurality of preset first fan operation schemes corresponding to the ambient temperature.

[0012] According to the first target fan operation plan, control the operation of the fixed-frequency fan and the variable-frequency fan.

[0013] According to the air-cooled unit control method provided in this application, the plurality of preset first fan operating schemes corresponding to the ambient temperature include:

[0014] When the ambient temperature is lower than a preset first temperature value, the fixed-frequency fan and the variable-frequency fan shall not be started.

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

[0016] When the ambient temperature is greater than or equal to the second temperature value, the fixed frequency fan is controlled to start sequentially at a first preset time interval with the output voltage and fan speed corresponding to the preset fixed frequency fan speed. After all the fixed frequency fans have started for a second preset time, the variable frequency fan is controlled to start with the output voltage and fan speed corresponding to the preset variable frequency fan speed.

[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 the air-cooled unit control method provided in this application, the air-cooled unit further includes a compressor; the air-cooled unit operating information includes compressor status, discharge pressure, absolute pressure ratio, preset limit value corresponding to ambient temperature, preset limit value corresponding to discharge pressure, and preset limit value corresponding to absolute pressure ratio.

[0019] Based on the compressor operating information and the ambient temperature, controlling the operation of the fixed-frequency fan and the variable-frequency fan includes:

[0020] When the compressor is operating normally and the exhaust pressure is less than the preset lower limit of exhaust pressure, the fixed-frequency fan and the variable-frequency fan are controlled to stop operating.

[0021] When the compressor is operating normally, and the exhaust pressure is greater than or equal to the lower limit of the exhaust pressure and less than the preset upper limit of the exhaust pressure, a second target fan operating scheme is determined from a plurality of preset second fan operating schemes corresponding 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 operating scheme.

[0022] When the compressor is operating normally, and any one of the ambient temperature, the exhaust pressure, and the absolute pressure ratio is greater than its 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 the air-cooled unit control method provided in this application, the air-cooled unit operation information also includes the fan operation status;

[0024] The multiple preset second fan operating schemes corresponding to the absolute pressure ratio include:

[0025] When the absolute pressure ratio is greater than or equal to a preset lower limit of absolute pressure ratio and less than a preset upper limit of absolute pressure ratio, the fan speed corresponding to the current gear of the fixed frequency fan and the variable frequency fan is maintained.

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

[0027] According to the air-cooled unit control method provided in this application, the step of controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the fan operating status when the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio or less than the lower limit of the absolute pressure ratio includes:

[0028] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the fan is operating in a state where only the variable frequency fan is running, the gear of the variable frequency fan is increased at preset gear-up intervals.

[0029] When the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio and the fan is operating at the highest speed, the fixed frequency fans are started sequentially with a preset start-up time interval and a preset start-up sequence, and the fixed frequency fans are controlled to operate with the output voltage and fan speed corresponding to the fixed frequency fan speed.

[0030] According to the air-cooled unit control method provided in this application, the step of controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the fan operating status when the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio or less than the lower limit of the absolute pressure ratio includes:

[0031] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is operating in a state where only the variable frequency fan is running, the speed of the variable frequency fan is reduced at preset downshift intervals.

[0032] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is operating in the form of both the variable frequency fan and the fixed frequency fan, the variable frequency fan is reduced to a lower speed at a preset downshift interval; when the variable frequency fan is reduced to a preset downshift, the fixed frequency fan is shut down sequentially at a preset shutdown interval and a preset shutdown sequence.

[0033] This application also provides a control device for an air-cooled unit, the air-cooled unit including a fixed-frequency fan and a variable-frequency fan, the fixed-frequency fan and the variable-frequency fan being arranged alternately, the device comprising:

[0034] This 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 the computer program to implement any of the above-described air-cooled unit control methods.

[0035] This application also provides a computer-readable storage medium comprising a stored program, wherein the program, when executed, implements any of the above-described air-cooled unit control methods.

[0036] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the air-cooled unit control method as described above.

[0037] The air-cooled unit control method, storage medium, and electronic device provided in this application include a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. By monitoring the operating information of the air-cooled unit and the ambient temperature, the operation of the fixed-frequency and variable-frequency fans is controlled based on these factors. Combining the advantages of fixed-frequency fans (relatively simple structure, long lifespan, and easy maintenance) and variable-frequency fans (wide airflow control range, small control fluctuations, and relatively stable operation), this method achieves a lower cost for assembling an air-cooled unit. Furthermore, by alternating the fixed-frequency and variable-frequency fans, optimal efficiency can be achieved when controlling the air-cooled unit's operation based on its operating information and ambient temperature. Attached Figure Description

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

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart illustrating the air-cooled unit control method provided in this application;

[0041] Figure 2 This is a schematic diagram showing the alternating arrangement of variable frequency fans and fixed frequency fans in the air-cooled unit provided in this application;

[0042] Figure 3 This is a schematic diagram of the control device for the air-cooled unit provided in this application;

[0043] Figure 4 This is a schematic diagram of the electronic device provided in this application. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort 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, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] This application provides a control method for an air-cooled unit, wherein the air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, and 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 operating information and ambient temperature of the air-cooled unit;

[0048] S12. Based on the operating information of the air-cooled unit and the ambient temperature, control the operation of the fixed-frequency fan and the variable-frequency fan.

[0049] Specifically, the number of fixed-frequency fans and variable-frequency fans in an air-cooled unit can be set according to actual needs. For example, such as... Figure 2 As shown, fixed-frequency fans VF1-VF4 and variable-frequency fans FF1-FF4 are arranged alternately, with each fan forming a V-shaped channel.

[0050] In this embodiment, the air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. By monitoring the operating information of the air-cooled unit and the ambient temperature, the operation of the fixed-frequency fan and the variable-frequency fan is controlled according to the operating information of the air-cooled unit and the ambient temperature. Combining the advantages of fixed-frequency fans, such as relatively simple structure, long lifespan, and easy maintenance, and the advantages of variable-frequency fans, such as wide airflow control range, small output fluctuation, and relatively stable output, an air-cooled unit can be assembled at a lower cost. At the same time, by alternating the arrangement of fixed-frequency and variable-frequency fans, optimal efficiency can be achieved when controlling the operation of the air-cooled unit according to the operating information of the air-cooled unit and the ambient temperature.

[0051] According to the air-cooled unit control method provided in this application, the air-cooled unit further includes a compressor; the air-cooled unit operating information includes the compressor status;

[0052] Step S12 includes:

[0053] S21. When the compressor is in the start-up state, based on the ambient temperature, determine the first target fan operation scheme from among a plurality of preset first fan operation schemes corresponding to the ambient temperature.

[0054] S22. Control the operation of the fixed-frequency fan and the variable-frequency fan according to the first target fan operation scheme.

[0055] Specifically, while the compressor is starting up, multiple operating schemes for the primary fan can be preset based on different ambient temperatures. In practical applications, the operating scheme for the primary target fan is determined and executed based on the ambient temperature, thereby controlling the operation of both the fixed-frequency and variable-frequency fans.

[0056] Furthermore, the multiple preset first fan operating schemes corresponding to the ambient temperature may include:

[0057] A) When the ambient temperature is lower than a preset first temperature value, control 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 the preset second temperature value, control the variable frequency fan to start with the output voltage and fan speed corresponding to the preset variable frequency fan speed.

[0059] C) When the ambient temperature is greater than or equal to the second temperature value, control the fixed frequency fan to start sequentially at a first preset time interval with the output voltage and fan speed corresponding to the preset fixed frequency fan speed, and after all the fixed frequency fans have started for a second preset time, control the variable frequency fan to start with the output voltage and fan speed corresponding to the preset variable frequency fan speed.

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

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

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

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

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

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

[0066] The fixed-frequency fan has two speed settings: 0 (off) and 1 (on). The output voltage (DC) of the fixed-frequency fan at speed 1 is 3V, and the fan speed is 320rpm.

[0067] The variable frequency fan speed settings, their corresponding output voltages, and fan speeds are shown in Table 1.

[0068] Table 1. Relationship between Variable Frequency Fan Speed ​​and Corresponding Output Voltage and Fan Speed

[0069] Variable frequency fan speed 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] First fan operation plan A: When TA < -5°C, control the fixed-frequency fans FF1 - FF4 and the variable-frequency fans VF1 - VF4 not to start.

[0071] First fan operation plan B: When -5°C ≤ TA < 10°C, control the variable-frequency fans VF1 - VF4 to start with the output voltage and fan speed corresponding to the 8th gear.

[0072] First fan operation plan C: When 10°C ≤ TA, control the fixed-frequency fans FF1 - FF4 to start in sequence at an interval of 1 second with the output voltage and fan speed corresponding to the 1st gear of the fixed-frequency fan. After 5 seconds from the completion of the start of all fixed-frequency fans, control the variable-frequency fans VF1 - VF4 to start simultaneously with the output voltage and fan speed corresponding to the 4th gear.

[0073] First fan operation plan D: When 15°C < TA, control the fixed-frequency fans FF1 - FF4 to start simultaneously, and control the variable-frequency fans VF1 - VF4 to start simultaneously with the output voltage and fan 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 fans not to start to save energy; when the ambient temperature rises and cooling and heat dissipation are required, only the variable-frequency fans are turned on for cooling to facilitate subsequent control of the variable-frequency fans 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 fans are preferentially turned on for cooling. The start-up in an interval manner can reduce the instantaneous power, prevent overload, and enable the fixed-frequency fans to start stably. Then, by turning on the variable-frequency fans 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 fans to start and control all variable-frequency fans 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 operation 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 fan and the variable-frequency fan to stop running;

[0078] S32. When the compressor is operating normally, and the exhaust pressure is greater than or equal to the lower limit of the exhaust pressure and less than the preset upper limit of the exhaust pressure, determine a second target fan operating scheme from multiple preset second fan operating schemes corresponding to the absolute pressure ratio; and control the fixed-frequency fan and the variable-frequency fan to operate according to the second target fan operating 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 its corresponding preset limit value, control the fixed frequency fan to run at the output voltage and fan speed corresponding to the preset variable frequency fan gear, and control the variable frequency fan to run at the output voltage and fan speed corresponding to the highest gear.

[0080] The discharge pressure indicates the pressure generated when the compressor discharges air, while the absolute pressure ratio indicates the degree to which the air inside the compressor is compressed. The absolute pressure ratio reveals the required speed of the air-cooled unit; a higher absolute pressure ratio indicates a higher required fan speed, while a lower absolute pressure ratio indicates a lower required fan speed.

[0081] Under normal compressor operation, the upper and lower limits of the discharge pressure can be preset. Based on the relationship between the discharge pressure, the upper limit, and the lower limit, multiple operating schemes for the secondary fan can be preset. In practical applications, the operating scheme of the secondary target fan is determined and executed based on the discharge pressure, thereby controlling the operation of both the fixed-frequency and variable-frequency fans.

[0082] When the compressor is operating normally, if any one of the ambient temperature, exhaust pressure, or absolute pressure ratio exceeds its corresponding preset limit value, this is an extreme situation. It is necessary to dissipate heat as quickly as possible, control the fixed frequency fan to operate at the output voltage and fan speed corresponding to the preset variable frequency fan speed, and control the variable frequency fan to operate at the output voltage and fan speed corresponding to the highest speed, so as to maximize heat dissipation.

[0083] Furthermore, the air-cooled unit operating information also includes the fan operating status; the multiple preset second fan operating schemes corresponding to the absolute pressure ratio may include:

[0084] E) When the absolute pressure ratio is greater than or equal to the preset lower limit of the absolute pressure ratio and the absolute pressure ratio is less than the preset upper limit of the absolute pressure ratio, maintain the fan speed corresponding to the current gear of the fixed frequency fan and the variable frequency fan.

[0085] F) When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio or less than the lower limit of the absolute pressure ratio, control the operation of the fixed-frequency fan and the variable-frequency fan according to the fan operating status.

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

[0087] In the second fan operating scheme F, when the absolute pressure ratio is greater than or equal to the upper limit, the required speed increases. When the absolute pressure ratio is less than the lower limit, the required speed decreases. Based on the increasing and decreasing speed requirements, the operation of the fixed-frequency fan and the variable-frequency fan can be further controlled according to the fan's operating status.

[0088] Specifically, the second fan operating scheme F can be further divided into the second fan operating scheme F1 and the second fan operating scheme F2. F1 corresponds to the case where the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the speed requirement increases; F2 corresponds to the case where the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the speed requirement decreases.

[0089] The second fan operating scheme F1 includes:

[0090] S41. 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 of the variable frequency fan is increased at a preset gear increase time interval.

[0091] S42. When the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio and the fan is running at the highest speed, the fixed frequency fans are started sequentially with a preset start-up time interval and a preset start-up sequence, and the fixed frequency fans are controlled to work with the output voltage and fan speed corresponding to the fixed frequency fan speed.

[0092] The preset upshift duration, preset start-up interval, and preset start-up sequence can be set according to actual needs.

[0093] In one example, when the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio, i.e. the speed requirement is increasing, if only the variable frequency fan is running and no fixed frequency fan is running, the speed of the variable frequency fan can be increased at 15-second intervals, so that the variable frequency fan increases the speed by 1 level / 15 seconds.

[0094] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio, i.e. the speed demand is increasing, if all variable frequency fans are already at their highest gear, i.e. all variable frequency fans are running at their maximum speed, then one fixed frequency fan can be started every 30 seconds in the order of FF1-FF2-FF3-FF4, until the speed demand increases and the subsequent fixed frequency fans are stopped, or all fans can run at full speed.

[0095] The second fan operating scheme F2 includes:

[0096] S51. When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is in the state of only the variable frequency fan is running, the gear of the variable frequency fan is reduced at a preset downshifting time interval.

[0097] S52. When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is operating in the form of both the variable frequency fan and the fixed frequency fan, the variable frequency fan is reduced to a lower speed at a preset downshift interval. When the variable frequency fan is reduced to a preset speed, the fixed frequency fan is shut down sequentially at a preset shutdown interval and a preset shutdown sequence.

[0098] The preset downshift duration, preset shutdown interval, and preset startup sequence can be set according to actual needs.

[0099] In one example, when the absolute pressure ratio is less than the lower limit of the absolute pressure ratio, i.e. the speed demand decreases, if only the variable frequency fan is running, the speed of the variable frequency fan can be reduced at 30-second intervals, so that the variable frequency fan reduces the speed at a rate of 1 speed / 30 seconds, until the speed demand decreases and the speed of the variable frequency fan stops decreasing, or all variable frequency fans are turned off at 0 speed.

[0100] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio, i.e., during the stage of decreasing speed demand, if both variable frequency fans and fixed frequency fans are operating, the variable frequency fans will first reduce their speed by 1 level every 30 seconds. When the variable frequency fan is at level 9, it has not yet left the stage of decreasing speed demand and still needs to reduce its speed. In this case, the fixed frequency fans will be stopped in the order of FF1-FF2-FF3-FF4, with one fan stopped every 60 seconds. If all fixed frequency fans have been stopped and the stage of decreasing speed demand has not yet left, then the conditions for the second fan operation plan F1 are met, and the second fan operation plan F1 will be executed.

[0101] In this embodiment, the speed requirement is determined based on 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. By combining the alternating arrangement of the variable frequency fan and the fixed frequency fan, the output fluctuation is small and relatively stable when the fan operating parameters are changed over a large range, so that the air-cooled unit can achieve optimal efficiency when working.

[0102] The air-cooled unit control device provided in this application is described below. The air-cooled unit control device described below can be referred to in correspondence with the air-cooled unit control method described above.

[0103] This application also provides a control device for an air-cooled unit, wherein the air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, the fixed-frequency fan and the variable-frequency fan being arranged alternately, and the device is as follows: Figure 3 As shown, the device includes:

[0104] Monitoring unit 31 is used to monitor the operating 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 operating information of the air-cooled unit and the ambient temperature.

[0106] In this embodiment, the air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. By monitoring the operating information of the air-cooled unit and the ambient temperature, the operation of the fixed-frequency fan and the variable-frequency fan is controlled according to the operating information of the air-cooled unit and the ambient temperature. Combining the advantages of fixed-frequency fans, such as relatively simple structure, long lifespan, and easy maintenance, and the advantages of variable-frequency fans, such as wide airflow control range, small output fluctuation, and relatively stable output, an air-cooled unit can be assembled at a lower cost. At the same time, by alternating the arrangement of fixed-frequency and variable-frequency fans, optimal efficiency can be achieved when controlling the operation of the air-cooled unit according to the operating information of the air-cooled unit and the ambient temperature.

[0107] According to the air-cooled unit control device provided in this application, the air-cooled unit further includes a compressor; the air-cooled unit operating information includes the compressor status;

[0108] Based on the operating information of the air-cooled unit and the ambient temperature, the control unit 32 is specifically used for:

[0109] When the compressor is in the start-up state, based on the ambient temperature, a first target fan operation scheme is determined from a plurality of preset first fan operation schemes corresponding to the ambient temperature.

[0110] According to the first target fan operation plan, control the operation of the fixed-frequency fan and the variable-frequency fan.

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

[0112] When the ambient temperature is lower than a preset first temperature value, the fixed-frequency fan and the variable-frequency fan shall not be started.

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

[0114] When the ambient temperature is greater than or equal to the second temperature value, the fixed frequency fan is controlled to start sequentially at a first preset time interval with the output voltage and fan speed corresponding to the preset fixed frequency fan speed. After all the fixed frequency fans have started for a second preset time, the variable frequency fan is controlled to start with the output voltage and fan speed corresponding to the preset variable frequency fan speed.

[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 in this application, the air-cooled unit further includes a compressor; the air-cooled unit operating information includes compressor status, discharge pressure, absolute pressure ratio, preset limit value corresponding to ambient temperature, preset limit value corresponding to discharge pressure, and preset limit value corresponding to absolute pressure ratio.

[0117] Control unit 32 is specifically used for:

[0118] When the compressor is operating normally and the exhaust pressure is less than the preset lower limit of exhaust pressure, the fixed-frequency fan and the variable-frequency fan are controlled to stop operating.

[0119] When the compressor is operating normally, and the exhaust pressure is greater than or equal to the lower limit of the exhaust pressure and less than the preset upper limit of the exhaust pressure, a second target fan operating scheme is determined from a plurality of preset second fan operating schemes corresponding 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 operating scheme.

[0120] When the compressor is operating normally, and any one of the ambient temperature, the exhaust pressure, and the absolute pressure ratio is greater than its 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-cooled unit control device provided in this application, the air-cooled unit operation information also includes the fan operation status;

[0122] The multiple preset second fan operating schemes corresponding to the absolute pressure ratio include:

[0123] When the absolute pressure ratio is greater than or equal to a preset lower limit of absolute pressure ratio and less than a preset upper limit of absolute pressure ratio, the fan speed corresponding to the current gear of the fixed frequency fan and the variable frequency fan is maintained.

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

[0125] According to the air-cooled unit control device provided in this application, the step of controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the fan operating status when the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio or less than the lower limit of the absolute pressure ratio includes:

[0126] When the absolute pressure ratio is greater than or equal to the upper limit of the absolute pressure ratio and the fan is operating in a state where only the variable frequency fan is running, the gear of the variable frequency fan is increased at preset gear-up intervals.

[0127] When the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio and the fan is operating at the highest speed, the fixed frequency fans are started sequentially with a preset start-up time interval and a preset start-up sequence, and the fixed frequency fans are controlled to operate with the output voltage and fan speed corresponding to the fixed frequency fan speed.

[0128] According to the air-cooled unit control device provided in this application, the step of controlling the operation of the fixed-frequency fan and the variable-frequency fan according to the fan operating status when the absolute pressure ratio is greater than the upper limit of the absolute pressure ratio or less than the lower limit of the absolute pressure ratio includes:

[0129] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is operating in a state where only the variable frequency fan is running, the speed of the variable frequency fan is reduced at preset downshift intervals.

[0130] When the absolute pressure ratio is less than the lower limit of the absolute pressure ratio and the fan is operating in the form of both the variable frequency fan and the fixed frequency fan, the variable frequency fan is reduced to a lower speed at a preset downshift interval; when the variable frequency fan is reduced to a preset downshift, the fixed frequency fan is shut down sequentially at a preset shutdown interval and a preset shutdown sequence.

[0131] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4As shown, the electronic device may include a processor 410, a communication interface 420, a memory 430, and a communication bus 440. The processor 410, communication interface 420, and memory 430 communicate with each other via the communication bus 440. The processor 410 can call logical instructions from the memory 430 to execute a control method for an air-cooled unit. The air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, which are arranged alternately. The method includes: monitoring the operating information of the air-cooled unit and the ambient temperature; and controlling the operation of the fixed-frequency fan and the variable-frequency fan based on the operating information of the air-cooled unit and the ambient temperature.

[0132] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

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

[0134] In another aspect, this application also provides a computer-readable storage medium, the computer-readable storage medium including a stored program, wherein the program executes the air-cooled unit control method provided by the above methods when it runs, the air-cooled unit including a fixed-frequency fan and a variable-frequency fan, the fixed-frequency fan and the variable-frequency fan being arranged alternately, the method including: monitoring the air-cooled unit operating information and the ambient temperature; and controlling the fixed-frequency fan and the variable-frequency fan to work according to the air-cooled unit operating information and the ambient temperature.

[0135] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0136] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, 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 can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments 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 this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An air-cooled unit control method, characterized by, The air-cooled unit comprises fixed-frequency blowers and variable-frequency blowers, the fixed-frequency blowers and the variable-frequency blowers are arranged alternately, and the method comprises the following steps: Monitoring air-cooled unit operation information and environmental temperature; According to the air-cooled unit operation information and the environmental temperature, the fixed-frequency blower and the variable-frequency blower are controlled to work; The air-cooled unit further comprises a compressor; the air-cooled unit operation information comprises a compressor state; According to the air-cooled unit operation information and the environmental temperature, the fixed-frequency blower and the variable-frequency blower are controlled to work, which comprises the following steps: When the compressor state is starting, according to the environmental temperature, a first target blower working scheme is determined from a plurality of preset first blower working schemes corresponding to the environmental temperature; According to the first target blower working scheme, the fixed-frequency blower and the variable-frequency blower are controlled to work; The plurality of preset first blower working schemes corresponding to the environmental temperature comprises the following steps: When the environmental temperature is less than a preset first temperature value, the fixed-frequency blower and the variable-frequency blower are controlled not to start; When the environmental temperature is greater than or equal to the first temperature value and less than a preset second temperature value, the variable-frequency blower is controlled to start at an output voltage and a blower rotating speed corresponding to a preset variable-frequency blower gear; When the environmental temperature is greater than or equal to the second temperature value, the fixed-frequency blower is controlled to start at an output voltage and a blower rotating speed corresponding to a preset fixed-frequency blower gear in turn at an interval of a first preset time length, and after all the fixed-frequency blowers are started for a second preset time length, the variable-frequency blower is controlled to start at an output voltage and a blower rotating speed corresponding to a preset variable-frequency blower gear; When the environmental temperature is greater than a preset limit value corresponding to the environmental temperature, the fixed-frequency blower is controlled to start at an output voltage and a blower rotating speed corresponding to a preset variable-frequency blower gear, and the variable-frequency blower is controlled to start at an output voltage and a blower rotating speed corresponding to a highest gear.

2. The air-cooled unit control method of claim 1, wherein The air-cooled unit further comprises a compressor; the air-cooled unit operation information comprises a compressor state, discharge pressure, absolute pressure ratio, a preset limit value corresponding to the environmental temperature, a preset limit value corresponding to the discharge pressure, and a preset limit value corresponding to the absolute pressure ratio; According to the compressor operation information and the environmental temperature, the fixed-frequency blower and the variable-frequency blower are controlled to work, which comprises the following steps: When the compressor state is normal operation and the discharge pressure is less than a preset lower limit value of the discharge pressure, the fixed-frequency blower and the variable-frequency blower are controlled to stop running; When the compressor state is normal operation and the discharge pressure is greater than or equal to the lower limit value of the discharge pressure and less than a preset upper limit value of the discharge pressure, a second target blower working scheme is determined from a plurality of preset second blower working schemes corresponding to the absolute pressure ratio according to the absolute pressure ratio; according to the second target blower working scheme, the fixed-frequency blower and the variable-frequency blower are controlled to work; In a case where the compressor state is normal operation and any one of the ambient temperature, the exhaust pressure and the absolute pressure ratio is greater than a corresponding preset limit value, the fixed-frequency fan is controlled to operate at an output voltage and a fan rotating speed corresponding to a preset variable-frequency fan gear, and the variable-frequency fan is controlled to operate at an output voltage and a fan rotating speed corresponding to a highest gear.

3. The air-cooled unit control method of claim 2, wherein The air-cooled unit operation information further includes a fan operation state; The plurality of preset second fan operation schemes corresponding to the absolute pressure ratio includes: In a case where the absolute pressure ratio is greater than or equal to a preset lower limit value of the absolute pressure ratio and the absolute pressure ratio is less than a preset upper limit value of the absolute pressure ratio, a fan rotating speed corresponding to a current gear of the fixed-frequency fan and the variable-frequency fan is maintained; In a case where the absolute pressure ratio is greater than or equal to 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, the fixed-frequency fan and the variable-frequency fan are controlled to operate according to the fan operation state.

4. The air-cooled unit control method according to claim 3, characterized by, The controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state in a case where 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 includes: In a case where the absolute pressure ratio is greater than or equal to the upper limit value of the absolute pressure ratio and the fan operation state is that only the variable-frequency fan operates, gears of the variable-frequency fan are raised at preset gear-raising time intervals; In a case where the absolute pressure ratio is greater than the upper limit value of the absolute pressure ratio and the fan operation state is that the variable-frequency fan operates at a highest gear, the fixed-frequency fan is started in a preset starting time interval and a preset starting sequence, and the fixed-frequency fan is controlled to operate at an output voltage and a fan rotating speed corresponding to the gear of the fixed-frequency fan.

5. The air-cooled unit control method according to claim 3, characterized by, The controlling the fixed-frequency fan and the variable-frequency fan to operate according to the fan operation state in a case where 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 includes: In a case where the absolute pressure ratio is less than the lower limit value of the absolute pressure ratio and the fan operation state is that only the variable-frequency fan operates, gears of the variable-frequency fan are lowered at preset gear-lowering time intervals; In a case where the absolute pressure ratio is less than the lower limit value of the absolute pressure ratio and the fan operation state is that the variable-frequency fan and the fixed-frequency fan operate, gears of the variable-frequency fan are lowered at the preset gear-lowering time intervals, and the fixed-frequency fan is turned off in a preset turn-off time interval and a preset turn-off sequence in a case where the gear of the variable-frequency fan is lowered to a preset gear.

6. An air-cooled unit control device characterized by comprising: The air-cooled unit includes a fixed-frequency fan and a variable-frequency fan, the fixed-frequency fan and the variable-frequency fan are alternately arranged, and the device includes: a monitoring unit configured to monitor air-cooled unit operation information and an ambient temperature; a control unit configured to control the fixed-frequency fan and the variable-frequency fan to operate according to the air-cooled unit operation information and the ambient temperature; The air-cooled unit further includes a compressor, and the air-cooled unit operation information includes a compressor state. According to the air-cooled unit operation information and the ambient temperature, the fixed-frequency fan and the variable-frequency fan are controlled to work, including: In a case where the compressor state is starting, according to the ambient temperature, a first target fan working scheme is determined from a plurality of preset first fan working schemes corresponding to the ambient temperature; According to the first target fan working scheme, the fixed-frequency fan and the variable-frequency fan are controlled to work; The plurality of preset first fan working schemes corresponding to the ambient temperature include: In a case where the ambient temperature is less than a preset first temperature value, the fixed-frequency fan and the variable-frequency fan are controlled not to start; In a case where 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 at an output voltage and a fan rotating speed corresponding to a preset variable-frequency fan gear; In a case where the ambient temperature is greater than or equal to the second temperature value, the fixed-frequency fan is controlled to start at an output voltage and a fan rotating speed corresponding to a preset fixed-frequency fan gear at intervals of a first preset time length, and after all the fixed-frequency fans are started for a second preset time length, the variable-frequency fan is controlled to start at an output voltage and a fan rotating speed corresponding to a preset variable-frequency fan gear; In a case where the ambient temperature is greater than a preset limit value corresponding to the ambient temperature, the fixed-frequency fan is controlled to start at an output voltage and a fan rotating speed corresponding to a preset variable-frequency fan gear, and the variable-frequency fan is controlled to start at an output voltage and a fan rotating speed corresponding to a highest gear.

7. A computer readable storage medium, characterized in that, The computer readable storage medium includes a stored program, wherein the program performs the method of any one of claims 1 to 5 when running. 8.An electronic device comprising a memory and a processor, the electronic device comprising: The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 5 by using the computer program.

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