Air conditioner fan and control method and control device thereof

Abstract

The invention discloses an air conditioner fan and a control method and device thereof, and the control method comprises the steps: in the operation process of the fan, obtaining first temperature values of all temperature sensors at the current moment; under the condition that the first temperature values of part of the temperature sensors do not meet the first preset condition, it is determined that the part of the temperature sensors break down; acquiring a second temperature value of the temperature sensor which does not fail; and the rotating speed of the fan is determined according to the second temperature value, a preset temperature value and a temperature threshold value. The situation that the fan stops running due to the fault of the temperature sensor can be avoided.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an air conditioning fan and its control method and control device. Background Technology

[0002] Data centers now have increasingly stringent reliability requirements, necessitating more diverse control methods for air conditioning fans to meet various temperature control needs. Temperature sensors are widely used in air conditioning fans, and they are prone to failure. When a temperature sensor malfunctions, the air conditioning fan cannot start operating until the fault is resolved, impacting the reliability of the data center. Summary of the Invention

[0003] This invention provides an air conditioner fan and its control method and device, which can prevent the fan from stopping operation due to temperature sensor failure.

[0004] According to one aspect of the present invention, a control method for an air conditioning fan is provided, the air conditioning fan including a fan and a temperature sensor, the temperature sensor being used to measure the temperature value corresponding to the fan;

[0005] Control methods include:

[0006] During the operation of the wind turbine, acquire the first temperature values ​​of all temperature sensors at the current moment;

[0007] If the first temperature value of some temperature sensors does not meet the first preset condition, it is determined that some temperature sensors have failed.

[0008] Obtain the second temperature value from the temperature sensor that is not malfunctioning;

[0009] The fan speed is determined based on the second temperature value, the preset temperature value, and the temperature threshold.

[0010] Optionally, before acquiring the first temperature values ​​from all temperature sensors at the current moment during fan operation, the process may also include:

[0011] Before starting the fan, determine the fan's preset operating mode; the preset operating mode includes any one of the following: return air mode, supply air mode, and temperature difference mode.

[0012] In the return air mode, the temperature sensor is a return air temperature sensor, which is located on the return air side of the fan, and the temperature values ​​obtained are all return air temperature values. In the supply air mode, the temperature sensor is a supply air temperature sensor, which is located on the supply air side of the fan, and the temperature values ​​obtained are all supply air temperature values. In the temperature difference mode, the temperature sensors include a return air temperature sensor and a supply air temperature sensor, and the temperature values ​​obtained are the difference between the return air temperature value and the supply air temperature value.

[0013] Optionally, after determining the preset operating mode of the fan before starting the fan, the following may also be included:

[0014] In the preset operating mode, before the fan starts, the third temperature value of each temperature sensor is acquired;

[0015] If the third temperature value of all temperature sensors fails to meet the first preset condition, it is determined that all temperature sensors have failed, and the fan is started at its maximum speed until the third temperature value of all temperature sensors meets the first preset condition.

[0016] Optionally, after acquiring the first temperature values ​​from all temperature sensors at the current moment during fan operation, the process may also include:

[0017] If the first temperature value of all temperature sensors fails to meet the first preset condition, it is determined that all temperature sensors have failed.

[0018] Obtain the fourth temperature value of all temperature sensors from the previous moment;

[0019] The fan speed is determined based on the fourth temperature value, the preset temperature value, and the temperature threshold.

[0020] Optionally, the temperature threshold includes a first threshold and a second threshold. The fan speed is determined based on the second temperature value, a preset temperature value, and the temperature threshold, including:

[0021] The temperature difference between the second temperature value and the preset temperature value is determined based on the second temperature value and the preset temperature value.

[0022] If the temperature difference exceeds the first threshold, increase the fan speed;

[0023] If the temperature difference is greater than or equal to the second threshold and less than or equal to the first threshold, the fan speed shall be kept constant.

[0024] If the temperature difference is less than the second threshold, reduce the fan speed.

[0025] Optionally, in return air mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset return air temperature value.

[0026] In the air supply mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset air supply temperature value.

[0027] In temperature difference mode, the first threshold includes 18℃; the second threshold includes 15℃, and the preset temperature value is the preset difference between the return air temperature value and the supply air temperature value.

[0028] Optionally, the second temperature value may include any one of the average, maximum, or minimum values ​​of all temperature values ​​acquired from the temperature sensors that have not malfunctioned;

[0029] The fourth temperature value includes any one of the average, maximum, or minimum temperature values ​​acquired from all temperature sensors at the previous moment.

[0030] Optionally, before acquiring the first temperature values ​​from all temperature sensors at the current moment during fan operation, the following steps are included:

[0031] If some fans fail to meet the second preset condition during operation, it is determined that some fans have malfunctioned, and the speed of the fans that have not malfunctioned is increased.

[0032] According to another aspect of the present invention, a control device for an air conditioning fan is provided, the air conditioning fan including a fan and a temperature sensor, the temperature sensor being used to measure the temperature value corresponding to the fan;

[0033] The control device includes:

[0034] The first temperature value acquisition module is used to acquire the first temperature value of all temperature sensors at the current moment during the operation of the fan.

[0035] The first fault determination module is used to determine that some temperature sensors have failed when the first temperature value of some temperature sensors does not meet the first preset condition.

[0036] The second temperature value acquisition module is used to acquire the second temperature value of the temperature sensor that has not malfunctioned.

[0037] The first speed determination module is used to determine the fan speed based on the second temperature value, the preset temperature value, and the temperature threshold.

[0038] According to another aspect of the present invention, an air conditioning fan is provided, including the control device for the air conditioning fan described in any embodiment of the present invention.

[0039] The air conditioning fan control method provided by the technical solution of this invention includes: during fan operation, acquiring the first temperature values ​​of all temperature sensors at the current moment; determining that some temperature sensors have failed if the first temperature values ​​of some temperature sensors do not meet a first preset condition; acquiring the second temperature values ​​of the temperature sensors that have not failed; and determining the fan speed based on the second temperature values, the preset temperature value, and the temperature threshold. In this invention, after some temperature sensors fail, the fan can be controlled based on the second temperature values ​​of the temperature sensors that have not failed, the preset temperature value, and the temperature threshold. The air conditioning fan does not need to stop operating, minimizing the impact of temperature sensor failures on fan operation and ensuring the reliability of the data unit operation.

[0040] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a flowchart of a control method for an air conditioner fan provided in an embodiment of the present invention.

[0043] Figure 2 This is a flowchart of another air conditioner fan control method provided in an embodiment of the present invention.

[0044] Figure 3 This is a flowchart of another air conditioner fan control method provided in an embodiment of the present invention.

[0045] Figure 4 This is a flowchart of a control device for an air conditioner fan provided in an embodiment of the present invention. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," etc., used in this invention 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 the invention 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.

[0048] This invention provides a control method for an air conditioner fan. The air conditioner fan includes a fan and a temperature sensor, which is used to measure the temperature value corresponding to the fan.

[0049] The temperature sensors include return air temperature sensors and supply air temperature sensors. Each fan has a return air side and a supply air side. The temperature of the return air side can be measured by the return air temperature sensor, and the temperature of the supply air side can be measured by the supply air temperature sensor. The return air temperature sensors and supply air temperature sensors are configured in a one-to-one correspondence. One return air temperature sensor and one supply air temperature sensor can correspond to multiple fans, or they can correspond to one fan.

[0050] Figure 1 This is a flowchart of a control method for an air conditioner fan provided in an embodiment of the present invention, see reference. Figure 1 The control methods include:

[0051] S110. During the operation of the fan, acquire the first temperature value of all temperature sensors at the current moment.

[0052] During the operation of the fan, the control chip in the air conditioner can obtain the first temperature value of all temperature sensors in real time or at intervals. The interval can be 10 seconds, 30 seconds, 1 minute, 2 minutes, etc., and the interval can be set according to the requirements.

[0053] S120. If the first temperature value of some temperature sensors does not meet the first preset condition, it is determined that some temperature sensors have failed.

[0054] The first preset condition is the normal reading range of the temperature sensor. If the first temperature value of some temperature sensors cannot be read or reads an abnormal value that is not within the normal reading range, it can be determined that some temperature sensors have malfunctioned.

[0055] S130: Obtain the second temperature value from the temperature sensor that is not malfunctioning.

[0056] Specifically, when some temperature sensors detect abnormal temperature values, those temperature values ​​will be removed from the calculation to avoid temperature fluctuations. The second temperature value of the temperature sensors that have not malfunctioned will be obtained. The second temperature value can be the average value of all temperature sensors that have not malfunctioned, or the maximum value of all temperature sensors that have not malfunctioned, or the minimum value of all temperature sensors that have not malfunctioned.

[0057] S140. Determine the fan speed based on the second temperature value, the preset temperature value, and the temperature threshold.

[0058] The preset temperature value can be a pre-defined temperature value that meets the operating requirements of the data center unit. The temperature difference is determined based on the second temperature value of the temperature sensors that are functioning correctly and the preset temperature value. The rotational speed of all fans is then determined by comparing the temperature difference with a temperature threshold. For example, the temperature threshold includes a maximum threshold and a minimum threshold. If the temperature difference is greater than the maximum threshold, the rotational speed of all fans is increased, lowering the temperature of the data center unit. If the temperature difference is less than the minimum threshold, the rotational speed of all fans is decreased, raising the temperature of the data center unit. If the temperature difference is greater than or equal to the minimum threshold and less than or equal to the maximum threshold, the rotational speed of all fans can be kept constant. This ensures stable operation of the data center unit at a certain temperature, improving its reliability. Furthermore, even if some temperature sensors fail, the fan speed can be adjusted based on the second temperature value of the sensors that are functioning correctly, the preset temperature value, and the temperature threshold, without requiring the air conditioning fans to stop running, thus avoiding impacting the reliability of the data center unit.

[0059] The air conditioning fan control method provided by the technical solution of this invention includes: during fan operation, acquiring the first temperature values ​​of all temperature sensors at the current moment; determining that some temperature sensors have failed if the first temperature values ​​of some temperature sensors do not meet a first preset condition; acquiring the second temperature values ​​of the temperature sensors that have not failed; and determining the fan speed based on the second temperature values, the preset temperature value, and the temperature threshold. In this invention, after some temperature sensors fail, the fan can be controlled based on the second temperature values ​​of the temperature sensors that have not failed, the preset temperature value, and the temperature threshold. The air conditioning fan does not need to stop operating, minimizing the impact of temperature sensor failures on fan operation and ensuring the reliability of the data unit operation.

[0060] Optional, Figure 2 This is a flowchart of another air conditioner fan control method provided in an embodiment of the present invention, see reference. Figure 2 The control methods include:

[0061] S100. Before starting the fan, determine the preset operating mode of the fan; the preset operating mode includes any one of the following: return air mode, supply air mode, and temperature difference mode; wherein, in return air mode, the temperature sensor is a return air temperature sensor, which is set on the return air side of the fan, and the temperature value obtained is the return air temperature value; in supply air mode, the temperature sensor is a supply air temperature sensor, which is set on the supply air side of the fan, and the temperature value obtained is the supply air temperature value; in temperature difference mode, the temperature sensor includes a return air temperature sensor and a supply air temperature sensor, and the temperature value obtained is the difference between the return air temperature value and the supply air temperature value.

[0062] Before starting the fans, different operating modes can be determined according to requirements. Preset operating modes include any one of the following: return air mode, supply air mode, and temperature difference mode. The preset operating mode of the fans needs to be determined before starting the fans. After the preset operating mode is successfully set, all fans will operate in the preset operating mode. For example, if the preset operating mode is return air mode, the temperature values ​​obtained from all temperature sensors are the return air temperature values, and the subsequent corresponding preset temperature value is the preset return air temperature value, with the temperature threshold being the return air temperature threshold. If the preset operating mode is supply air mode, the temperature values ​​obtained from all temperature sensors are the supply air temperature values, and the subsequent corresponding preset temperature value is the preset supply air temperature value, with the temperature threshold being the supply air temperature threshold. If the preset operating mode is temperature difference mode, the temperature values ​​obtained from all temperature sensors are the difference between the return air temperature value and the supply air temperature value, and the subsequent corresponding preset temperature value is the preset difference between the preset return air temperature value and the supply air temperature value, with the temperature threshold being the temperature difference threshold. By determining the preset operating mode of the wind turbine before startup, multiple wind turbine control schemes are available. The wind turbine control scheme can be adapted to different scenarios to achieve multiple control modes for the wind turbine. This allows for the selection of any mode according to the needs of the customers on site, meeting their different mode requirements.

[0063] S101. In the preset operating mode, obtain the third temperature value of each temperature sensor.

[0064] S102. If the third temperature value of all temperature sensors fails to meet the first preset condition, it is determined that all temperature sensors have failed, and the fan is started at the maximum speed until the third temperature value of all temperature sensors meets the first preset condition.

[0065] In the preset operating mode, before the fan starts, the control chip first acquires the third temperature value of each temperature sensor. If the preset operating mode is return air mode, before the fan starts, the return air temperature value of each return air temperature sensor is detected. If the return air temperature values ​​of all temperature sensors do not meet the first preset condition, then all return air temperature sensors are determined to be faulty. If the preset operating mode is supply air mode, before the fan starts, the supply air temperature value of each supply air temperature sensor is detected. If the supply air temperature values ​​of all temperature sensors do not meet the first preset condition, then all supply air temperature sensors are determined to be faulty. If the preset operating mode is temperature difference mode, before the fan starts, the return air temperature value of each return air temperature sensor or the supply air temperature value of each supply air temperature sensor is detected. If the return air temperature value of all return air temperature sensors or the supply air temperature value of all supply air temperature sensors does not meet the first preset condition, then all return air temperature sensors or all supply air temperature sensors are determined to be faulty. After all temperature sensors fail, the fan starts at its maximum speed, maximizing cooling capacity, so that the data unit operates at the lowest temperature, ensuring the operation of the data unit. If the temperature values ​​of all temperature sensors are normal before the fan starts, or if the temperature values ​​of all temperature sensors are normal after the fan starts following adjustments, the fan will operate at the normal temperature values.

[0066] S110. During the operation of the fan, acquire the first temperature value of all temperature sensors at the current moment.

[0067] S120. If the first temperature value of some temperature sensors does not meet the first preset condition, it is determined that some temperature sensors have failed.

[0068] S130: Obtain the second temperature value from the temperature sensor that is not malfunctioning.

[0069] S140. Determine the fan speed based on the second temperature value, the preset temperature value, and the temperature threshold.

[0070] This invention provides multiple wind turbine control schemes by determining the preset operating mode of the wind turbine before startup. The wind turbine control scheme can be adapted to different scenarios to achieve multiple control modes for the wind turbine, allowing any mode to be selected according to the needs of the customer on site, thus meeting the different mode requirements of the customer.

[0071] Optional, Figure 3 This is a flowchart of another air conditioner fan control method provided in an embodiment of the present invention, see reference. Figure 3 The control methods include:

[0072] S110. During the operation of the fan, acquire the first temperature value of all temperature sensors at the current moment.

[0073] S103. If the first temperature value of all temperature sensors fails to meet the first preset condition, determine that all temperature sensors have failed.

[0074] If the first temperature value of all temperature sensors fails to meet the first preset condition, the first preset condition is the normal reading range of the temperature sensors. If the first temperature value of all temperature sensors cannot be read or reads an abnormal value that is not within the normal reading range, it is determined that all temperature sensors have malfunctioned during the operation of the fan.

[0075] S104. Obtain the fourth temperature value of all temperature sensors from the previous moment.

[0076] Specifically, after all temperature sensors fail, the fourth temperature value of all temperature sensors at the moment before the failure is obtained. The fourth temperature value can be the average value of all temperature sensors, or the maximum value of all temperature sensors, or the minimum value of all temperature sensors.

[0077] S105. Determine the fan speed based on the fourth temperature value, the preset temperature value, and the temperature threshold.

[0078] The preset temperature value can be a pre-defined temperature value that meets the operating requirements of the data unit. The temperature difference is determined based on the fourth temperature value of all temperature sensors at the previous moment and the preset temperature value. The rotational speed of all fans is determined by comparing the temperature difference with a temperature threshold. For example, the temperature threshold includes a maximum threshold and a minimum threshold. If the temperature difference is greater than the maximum threshold, the rotational speed of all fans is increased, causing the data unit temperature to decrease; if the temperature difference is less than the minimum threshold, the rotational speed of all fans is decreased, causing the data unit temperature to increase; if the temperature difference is greater than or equal to the minimum threshold and less than or equal to the maximum threshold, the rotational speed of all fans can be kept constant. This ensures stable operation of the data unit at a certain temperature, improving its reliability. If all temperature sensors malfunction during fan operation, this embodiment of the invention can adjust the fan speed based on the fourth temperature value of all temperature sensors at the previous moment, the preset temperature value, and the temperature threshold. The air conditioning fans do not need to stop running, avoiding impact on the reliability of the data unit. After subsequent adjustments and repairs, if the temperature values ​​of all temperature sensors are normal after the fans start, the fans will operate at the normal temperature value.

[0079] S120. If the first temperature value of some temperature sensors does not meet the first preset condition, it is determined that some temperature sensors have failed.

[0080] S130: Obtain the second temperature value from the temperature sensor that is not malfunctioning.

[0081] S140. Determine the fan speed based on the second temperature value, the preset temperature value, and the temperature threshold.

[0082] In this embodiment of the invention, if all temperature sensors malfunction during fan operation, the fan can be adjusted based on the fourth temperature value of all temperature sensors at the previous moment, a preset temperature value, and a temperature threshold. The air conditioning fan does not need to stop running, thus avoiding impact on the reliability of the data unit. After subsequent adjustments to ensure all temperature sensor values ​​are normal upon fan restart, the fan will operate at the normal temperature values.

[0083] Optionally, S140 can be further refined, with the temperature threshold including a first threshold and a second threshold. S140 determines the fan speed based on the second temperature value, a preset temperature value, and the temperature threshold. Specifically, this refinement includes: determining the temperature difference between the second temperature value and the preset temperature value; increasing the fan speed when the temperature difference is greater than the first threshold; maintaining the fan speed unchanged when the temperature difference is greater than or equal to the second threshold and less than or equal to the first threshold; and decreasing the fan speed when the temperature difference is less than the second threshold.

[0084] Optionally, in return air mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset return air temperature value; in supply air mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset supply air temperature value; in temperature difference mode, the first threshold includes 18℃, the second threshold includes 15℃, and the preset temperature value is the preset difference between the return air temperature value and the supply air temperature value.

[0085] The first and second thresholds can be set according to requirements.

[0086] If all temperature sensors are functioning correctly and without malfunction, the following methods can be used to adjust the operating modes under different preset operating conditions:

[0087] In return air mode: The return air temperature value T1 of all return air temperature sensors is obtained by the detection chip and compared with the preset return air temperature value Tset1. When T1-Tset1>1℃ (1℃ is the first threshold), the fan speed is gradually increased according to the PID algorithm; when -1℃≤T1-Tset1≤1℃ (-1℃ is the second threshold and 1℃ is the first threshold), the fan speed remains unchanged; when T1-Tset1≤-1℃, the fan speed is gradually decreased according to the PID algorithm.

[0088] In the air supply mode: The air supply temperature value T2 obtained by the detection chip from all return air temperature sensors is compared with the preset air supply temperature value Tset2. When T2-Tset2>1℃ (1℃ is the first threshold), the fan speed is gradually increased according to the PID algorithm; when -1℃≤T2-Tset2≤1℃ (-1℃ is the second threshold and 1℃ is the first threshold), the fan speed remains unchanged; when T2-Tset2≤-1℃, the fan speed is gradually decreased according to the PID algorithm.

[0089] In temperature difference mode: The temperature difference T3 between the return air temperature value obtained by the unit and the corresponding supply air temperature value obtained by the supply air temperature sensor is compared with the preset difference Tset3 between the return air temperature value and the supply air temperature value. When T3-Tset3>18℃ ​​(18℃ is the first threshold), the fan speed is gradually increased according to the PID algorithm; when 15℃≤T2-Tset2≤18℃ (15℃ is the second threshold and 18℃ is the first threshold), the fan speed remains unchanged; when T3-Tset3≤15℃, the fan speed is gradually decreased according to the PID algorithm.

[0090] Specifically, if some temperature sensors malfunction during device operation, the fan speed is determined based on the second temperature value, preset temperature value, and temperature threshold value of the compliant temperature sensors. The second temperature value corresponds to T1, T2, and T3 in the different operating modes mentioned above. If all temperature sensors malfunction during device operation, the fan speed is determined based on the fourth temperature value, preset temperature value, and temperature threshold value of all temperature sensors at the previous moment. The fourth temperature value corresponds to T1, T2, and T3 in the different operating modes mentioned above. This ensures that the data center operates normally under stable temperatures, improving the reliability of the data center.

[0091] Optionally, the second temperature value includes any one of the average, maximum, or minimum values ​​of all temperature values ​​acquired from the temperature sensors that have not malfunctioned; the fourth temperature value includes any one of the average, maximum, or minimum values ​​of all temperature values ​​acquired from the temperature sensors at the previous moment.

[0092] Among these options, selecting the average value can prevent abnormal temperature values ​​from causing temperature fluctuations and affecting the operation of the fan; selecting the minimum value can save costs while maintaining the normal operation of the fan; selecting the maximum value can ensure that the temperature of the data unit is the lowest when the fan is running, ensuring that the temperature of the data unit in each area can be guaranteed to operate normally.

[0093] Optionally, before acquiring the first temperature values ​​of all temperature sensors at the current moment during the operation of the fan, the process includes: during the operation of the fan, if some fans do not meet the second preset condition, determining that some fans have failed, and increasing the speed of the fans that have not failed.

[0094] During operation, if a fan experiences an overcurrent or overvoltage fault, the chip in the fan will send a fault code to the air conditioner's control chip. If the fan speed malfunctions, the air conditioner's control chip will detect it. If some fans fail to meet the second preset condition during operation, it is determined that some fans have malfunctioned. The speed of the non-malfunctioning fans is then increased. The increase in the speed of the non-malfunctioning fans is calculated as (total number of fans * fan speed before the fault) / number of non-malfunctioning fans. This ensures that the fan speed is controlled to guarantee the normal operation of the data unit and minimizes the impact of partial fan failure on the overall cooling effect.

[0095] Based on the above embodiments, the present invention provides a control device for an air conditioner fan. The air conditioner includes a fan and a temperature sensor, and each temperature sensor measures at least one temperature value corresponding to a fan.

[0096] The control device includes:

[0097] The first temperature value acquisition module 210 is used to acquire the first temperature value of all temperature sensors at the current moment during the operation of the fan.

[0098] The first fault determination module 220 is used to determine that some temperature sensors have failed when the first temperature value of some temperature sensors does not meet the first preset condition.

[0099] The second temperature value acquisition module 230 is used to acquire the second temperature value of the temperature sensor that has not malfunctioned.

[0100] The first speed determination module 240 is used to determine the speed of the fan based on the second temperature value, the preset temperature value and the temperature threshold.

[0101] Optionally, the control device may also include:

[0102] The mode determination module is used to determine the preset operating mode of the fan before the fan starts, before acquiring the first temperature values ​​of all temperature sensors at the current moment during the operation of the fan. The preset operating mode includes any one of the return air mode, supply air mode and temperature difference mode.

[0103] In the return air mode, the temperature sensor is a return air temperature sensor, which is located on the return air side of the fan, and the temperature values ​​obtained are all return air temperature values. In the supply air mode, the temperature sensor is a supply air temperature sensor, which is located on the supply air side of the fan, and the temperature values ​​obtained are all supply air temperature values. In the temperature difference mode, the temperature sensors include a return air temperature sensor and a supply air temperature sensor, and the temperature values ​​obtained are the difference between the return air temperature value and the supply air temperature value.

[0104] Optionally, the control device may also include:

[0105] The third temperature value determination module is used to determine the preset operating mode of the fan before the fan starts, and then, under the preset operating mode, obtain the third temperature value of each temperature sensor before the fan starts.

[0106] The second fault determination module is used to determine that all temperature sensors have failed when the third temperature value of all temperature sensors fails to meet the first preset condition. The fan is then started at its maximum speed until the third temperature value of all temperature sensors meets the first preset condition.

[0107] Optionally, the control device may also include:

[0108] The third fault determination module, after acquiring the first temperature value of all temperature sensors at the current moment during the operation of the fan, determines that all temperature sensors have failed if the first temperature value of all temperature sensors fails to meet the first preset condition.

[0109] The fourth temperature value acquisition module is used to acquire the fourth temperature value of all temperature sensors at the previous moment;

[0110] The second speed determination module is used to determine the fan speed based on the fourth temperature value, the preset temperature value, and the temperature threshold.

[0111] Optionally, the temperature threshold includes a first threshold and a second threshold, and the first rotational speed determination module includes:

[0112] A temperature difference unit is used to determine the temperature difference between the second temperature value and the preset temperature value based on the second temperature value and the preset temperature value.

[0113] The first speed regulation unit is used to increase the speed of the fan when the temperature difference is greater than the first threshold.

[0114] The second speed regulation unit is used to maintain the fan speed constant when the temperature difference is greater than or equal to the second threshold and less than or equal to the first threshold.

[0115] The third speed regulation unit is used to reduce the fan speed when the temperature difference is less than the second threshold.

[0116] Optionally, in return air mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset return air temperature value.

[0117] In the air supply mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset air supply temperature value.

[0118] In temperature difference mode, the first threshold includes 18℃; the second threshold includes 15℃, and the preset temperature value is the preset difference between the return air temperature value and the supply air temperature value.

[0119] Optionally, the second temperature value may include any one of the average, maximum, or minimum values ​​of all temperature values ​​acquired from the temperature sensors that have not malfunctioned;

[0120] The fourth temperature value includes any one of the average, maximum, or minimum temperature values ​​acquired from all temperature sensors at the previous moment.

[0121] Optionally, the control device includes:

[0122] The fan adjustment module is used to determine if some fans have malfunctioned during fan operation, before acquiring the first temperature values ​​of all temperature sensors at the current moment, and to increase the speed of the fans that have not malfunctioned if some fans do not meet the second preset condition.

[0123] The air conditioner fan control device provided in this embodiment of the invention has the same beneficial effects as the air conditioner fan control method described in any embodiment of the invention.

[0124] Based on the above embodiments, this invention provides an air conditioning fan, including the control device for the air conditioning fan described in any embodiment of this invention.

[0125] The air conditioner fan provided in this embodiment of the invention has the same beneficial effects as the control device for the air conditioner fan described in any embodiment of the invention.

[0126] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0127] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling an air conditioner fan, characterized in that, The air conditioning fan includes a fan and a temperature sensor, and the temperature sensor is used to measure the temperature value corresponding to the fan. Control methods include: During the operation of the fan, the first temperature values ​​of all temperature sensors at the current moment are acquired; If the first temperature value of some temperature sensors does not meet the first preset condition, it is determined that some temperature sensors have malfunctioned. Obtain the second temperature value of the temperature sensor if no malfunction has occurred; The fan speed is determined based on the second temperature value, the preset temperature value, and the temperature threshold.

2. The control method according to claim 1, characterized in that, Before acquiring the first temperature values ​​of all temperature sensors at the current moment during the operation of the fan, the process also includes: Before starting the fan, a preset operating mode for the fan is determined; the preset operating mode includes any one of return air mode, supply air mode, and temperature difference mode. In the return air mode, the temperature sensor is a return air temperature sensor, which is located on the return air side of the fan, and the acquired temperature values ​​are all return air temperature values. In the supply air mode, the temperature sensor is a supply air temperature sensor, which is located on the supply air side of the fan, and the acquired temperature values ​​are all supply air temperature values. In the temperature difference mode, the temperature sensor includes a return air temperature sensor and a supply air temperature sensor, and the acquired temperature values ​​are the difference between the return air temperature value and the supply air temperature value.

3. The control method according to claim 2, characterized in that, Before starting the fan, after determining the preset operating mode of the fan, the method further includes: In the preset operating mode, before the fan is started, the third temperature value of each temperature sensor is obtained; If the third temperature value of all temperature sensors fails to meet the first preset condition, it is determined that all temperature sensors have failed, and the fan is started at its maximum speed until the third temperature value of all temperature sensors meets the first preset condition.

4. The control method according to claim 1, characterized in that, After acquiring the first temperature values ​​from all temperature sensors at the current moment during the operation of the fan, the process further includes: If the first temperature value of all the temperature sensors fails to meet the first preset condition, it is determined that all the temperature sensors have malfunctioned. Obtain the fourth temperature value of all temperature sensors from the previous moment; The fan speed is determined based on the fourth temperature value, the preset temperature value, and the temperature threshold.

5. The control method according to claim 1, characterized in that, The temperature threshold includes a first threshold and a second threshold. Determining the fan speed based on the second temperature value, a preset temperature value, and the temperature threshold includes: The temperature difference between the second temperature value and the preset temperature value is determined based on the second temperature value and the preset temperature value. If the temperature difference is greater than a first threshold, the speed of the fan is increased; If the temperature difference is greater than or equal to the second threshold and less than or equal to the first threshold, the fan speed shall be kept constant. If the temperature difference is less than the second threshold, the fan speed is reduced.

6. The control method according to claim 5, characterized in that, In return air mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is a preset return air temperature value. In the air supply mode, the first threshold includes 1℃, the second threshold includes -1℃, and the preset temperature value is the preset air supply temperature value. In temperature difference mode, the first threshold includes 18°C; the second threshold includes 15°C, and the preset temperature value is the preset difference between the return air temperature value and the supply air temperature value.

7. The control method according to claim 4, characterized in that, The second temperature value includes any one of the average, maximum, or minimum values ​​of all temperature values ​​acquired from the temperature sensor that is not malfunctioning; The fourth temperature value includes any one of the average, maximum, or minimum temperature values ​​of all temperature sensors acquired at the previous moment.

8. The control method according to claim 1, characterized in that, Before acquiring the first temperature values ​​of all temperature sensors at the current moment during the operation of the fan, the process includes: If, during the operation of the fan, some fans fail to meet the second preset condition, it is determined that some fans have malfunctioned, and the speed of the fans that have not malfunctioned is increased.

9. A control device for an air conditioner fan, characterized in that, The air conditioning fan includes a fan and a temperature sensor, and the temperature sensor is used to measure the temperature value corresponding to the fan. The control device includes: The first temperature value acquisition module is used to acquire the first temperature value of all temperature sensors at the current moment during the operation of the fan. The first fault determination module is used to determine that the partial temperature sensors have failed when the first temperature value of the partial temperature sensors does not meet the first preset condition. The second temperature value acquisition module is used to acquire the second temperature value of the temperature sensor when no malfunction occurs. The first speed determination module is used to determine the speed of the fan based on the second temperature value, the preset temperature value, and the temperature threshold.

10. An air conditioning fan, characterized in that, Includes the control device for the air conditioning fan as described in claim 9.

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