Control method and control device of duct type air conditioner and duct type air conditioner

Abstract

The invention provides a control method and device of a wind pipe machine and the wind pipe machine. The duct type air conditioner comprises a first motor and a second motor, the first motor and the second motor correspond to a first air outlet and a second air outlet respectively, and the method comprises the steps that the current value of the first motor and the current value of the second motor in the duct type air conditioner are obtained; and adjusting working parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor. According to the control method and the control device of the air duct machine and the air duct machine, the current values of the motors are monitored and adjusted in real time, and the method can ensure that the two motors can maintain load balance under different working conditions, so that the operation stability of the air duct machine is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and particularly to a control method, a control device and an air duct machine for an air duct machine. Background Art

[0002] Currently, air duct machines with relatively large heat exchange capacity all adopt dual motors to drive the two side fans to operate under the conditions of high rotational speed and high static pressure, so as to achieve a relatively large air volume. When there is a time difference in the startup of the two motors or the motor speed increase rates are inconsistent, the motor that starts first or whose speed increases first will cause the static pressure in the air duct to rise in advance. The load of the motor that starts later will decrease under the applied static pressure, resulting in the phenomenon that the two motors operate at the same rotational speed but have inconsistent loads. This is manifested as a large operating current of the fixed left motor and a small operating current of the right motor. The above phenomenon is likely to cause power fluctuations or even stall of the motor, affecting the operating stability of the air duct machine. Summary of the Invention

[0003] The present invention provides a control method, a control device and an air duct machine for an air duct machine to solve the defects existing in the prior art and achieve the following technical effects: By monitoring and adjusting the current values of the motors in real time, this method can ensure that the two motors can maintain load balance under different working conditions, thereby improving the operating stability of the air duct machine.

[0004] According to the control method of the air duct machine according to the first aspect embodiment of the present invention, the air duct machine includes a first motor and a second motor, and the first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The method includes:

[0005] Obtain the current value of the first motor and the current value of the second motor in the air duct machine;

[0006] According to the current value of the first motor and the current value of the second motor, adjust the working parameters of at least one of the first motor and the second motor.

[0007] According to an embodiment of the present invention, the step of adjusting the working parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor specifically includes:

[0008] Calculate the current difference between the current value of the first motor and the current value of the second motor, and mark the motor with the largest current value among the first motor and the second motor as the motor to be adjusted;

[0009] According to the current difference and the current value of the motor to be adjusted, adjust the working parameters of the motor to be adjusted.

[0010] In this way, the advantage of the above control method is that it can dynamically respond to the changes in the motor load. Through precise calculation and adjustment, it realizes the real-time balance of the motor load. This not only improves the operation efficiency and stability of the air duct machine, but also helps to extend the service life of the motor, reduce energy consumption, and improve the overall system performance.

[0011] According to an embodiment of the present invention, the step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes:

[0012] When the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, control the speed of the motor to be adjusted to decrease by a set adjustment speed based on the target speed; wherein, the set coefficient is less than one.

[0013] In this way, this control method can determine whether to adjust the motor speed and the adjustment amplitude according to the real-time monitoring data through the set coefficient, so as to ensure the operation stability of the air duct machine while also considering energy efficiency and motor protection.

[0014] According to an embodiment of the present invention, the step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes:

[0015] When the current difference is less than or equal to the product of the current value of the motor to be adjusted and the set coefficient, control the speed of the motor to be adjusted to remain unchanged at the target speed; wherein, the set coefficient is less than one.

[0016] In this way, this control method can determine whether to adjust the operating parameters of the motor according to the real-time monitored current value and the preset threshold, so as to consider the actual load condition of the motor while maintaining the system stability and energy efficiency. In this way, the system can flexibly adjust the operating state of the motor under different working conditions to achieve the best performance and efficiency.

[0017] According to an embodiment of the present invention, after the step of controlling the speed of the motor to be adjusted to decrease by a set adjustment speed based on the target speed when the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, it further includes:

[0018] Obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet;

[0019] Control and adjust the speed of the motor to be adjusted according to the first static pressure value and the second static pressure value.

[0020] In this way, by combining the monitoring of the current difference and the static pressure difference, the system can more comprehensively evaluate the working state of the air duct machine and perform dynamic adjustment to achieve the balance of the motor load and the air pressure. At the same time, this method not only considers the current load of the motor, but also considers the air pressure output of the air duct machine, which helps to optimize the overall performance and energy efficiency of the air duct machine.

[0021] According to an embodiment of the present invention, the step of controlling and adjusting the rotation speed of the motor to be adjusted again according to the first static pressure value and the second static pressure value specifically includes:

[0022] When the static pressure difference between the first static pressure value and the second static pressure value is less than the set pressure difference value, control the rotation speed of the motor to be adjusted to rise again to the target rotation speed.

[0023] In this way, this method enables the system to quickly respond to the change of static pressure and timely adjust the motor rotation speed to maintain the efficient operation of the air duct machine. And through this adjustment mechanism, the system can optimize the energy efficiency and reduce energy consumption while ensuring the performance of the air duct machine. That is to say, this method can perform precise control according to the actual static pressure feedback to ensure that the air duct machine can maintain the best operating state under various working conditions, while taking into account the energy efficiency of the system and the reliability of long-term operation.

[0024] According to an embodiment of the present invention, the step of controlling and adjusting the rotation speed of the motor to be adjusted again according to the first static pressure value and the second static pressure value specifically further includes:

[0025] When the static pressure difference between the first static pressure value and the second static pressure value is greater than or equal to the set pressure difference value, control the rotation speed of the motor to be adjusted to drop by the set adjustment rotation speed again;

[0026] Re-obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet in the air duct machine, and control and adjust the rotation speed of the motor to be adjusted again according to the static pressure difference between the first static pressure value and the second static pressure value until the static pressure difference is less than the set pressure difference value.

[0027] In this way, through this cyclic adjustment mechanism, the system can dynamically adjust the load of the motor to respond to the change of static pressure of the air duct machine under different working conditions. And by avoiding the motor running under too high a static pressure difference, this method helps to protect the motor from overload damage and extend its service life.

[0028] According to an embodiment of the present invention, before the step of obtaining the first current value of the first motor and the second current value of the second motor in the air duct machine, it further includes:

[0029] Obtain the current working stage of the air duct machine;

[0030] Then the step of obtaining the current values of the first motor and the second motor in the air duct machine specifically includes:

[0031] If it is determined that the air duct machine meets the target parameter requirements in the current working stage, then obtain the current values of the first motor and the second motor.

[0032] In this way, by determining the working stage of the air duct machine before obtaining the current value, the system can more accurately judge when load balancing control is required, thereby optimizing the control logic and improving the accuracy and response speed of control. Moreover, this method helps to balance the motor load on the premise that the air duct machine meets the working requirements, avoiding adjustment when it is unnecessary, thereby protecting the motor and improving energy efficiency.

[0033] According to an embodiment of the present invention, the step of determining that the air duct machine meets the target parameter requirements in the current working stage and then obtaining the current values of the first motor and the second motor specifically includes:

[0034] When the air duct machine is in the starting stage, if it is determined that the rotational speeds of the first motor and the second motor of the air duct machine both reach the target starting rotational speed, then obtain the current values of the first motor and the second motor.

[0035] In this way, the above method can optimize the starting process of the air duct machine, ensure the load balance of the motor in the starting stage, reduce the current impact during starting, thereby protecting the motor and improving the starting efficiency. Moreover, by obtaining the current value after the motor rotational speed reaches the target value, the stability of the system in the starting stage can be improved, laying a good foundation for the stable operation of the air duct machine.

[0036] In addition, considering motor load balance in the starting stage helps to improve the energy efficiency of the entire system and reduce energy waste.

[0037] According to an embodiment of the present invention, the step of determining that the air duct machine meets the target parameter requirements in the current working stage and then obtaining the current values of the first motor and the second motor specifically includes:

[0038] When the air duct machine is in the running stage, if it is determined that the rotational speeds of the first motor and the second motor of the air duct machine both reach the target running rotational speed, or if it is determined that the air duct machine receives a signal for adjusting the control air volume gear, then obtain the current values of the first motor and the second motor.

[0039] In this way, the method allows the air duct machine to respond in real time to the user's demand for adjusting the wind speed gear, improving the responsiveness of the system and the user experience. By monitoring and obtaining the motor current value during the operation phase, the system can keep the air duct machine operating efficiently under different load conditions.

[0040] In addition, the method provides a dynamic adjustment mechanism, enabling the air duct machine to adjust the operating state of the motor in a timely manner according to the actual working conditions and user needs.

[0041] According to an embodiment of the second aspect of the present invention, a control device for an air duct machine, the air duct machine includes a first motor and a second motor, the first motor and the second motor respectively correspond to a first air outlet and a second air outlet, and the device includes:

[0042] An acquisition module, configured to acquire the current value of the first motor and the current value of the second motor in the air duct machine;

[0043] A control module, configured to adjust the working parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor.

[0044] According to an embodiment of the second aspect of the present invention, an air duct machine, the air duct machine includes a first motor and a second motor, the first motor and the second motor respectively correspond to a first air outlet and a second air outlet, and the air duct machine further includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, it implements the control method of the air duct machine as described in the embodiment of the first aspect of the present invention.

[0045] The present invention provides a control method for an air duct machine to self-balance the load of the motors on both sides during startup and operation, so as to improve the stability of the machine operation in different duct environments. Compared with the related art, this method has at least the following advantages:

[0046] (1) Improve operation stability: By monitoring and adjusting the current value of the motor in real time, this method can ensure that the two motors can maintain load balance under different working conditions, thereby improving the operation stability of the air duct machine.

[0047] (2) Avoid power fluctuations and stalling: In the case where there is a time difference in motor startup or the rotational speed rise rates are inconsistent, this method can balance the motor load and avoid power fluctuations or even stalling caused by inconsistent loads.

[0048] (3) Extend the equipment life: By preventing the motor from being overloaded and overheated, this control method helps to extend the service life of the motor and reduce the maintenance cost.

[0049] (4)Improve energy efficiency: By optimizing the load distribution of the motor, this method can improve the energy efficiency of the air duct machine and reduce energy consumption.

[0050] (5)Reduce noise and vibration: By balancing the motor load, the additional noise and vibration caused by uneven load can be reduced, improving the working environment.

[0051] (6)Reduce downtime: Through real-time monitoring and quick response, this method can reduce the downtime caused by motor failures and improve production efficiency. Description of the Drawings

[0052] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0053] Figure 1 It is a schematic flowchart of the control method of the air duct machine provided by the present invention;

[0054] Figure 2 It is a schematic structural diagram of the control device of the air duct machine provided by the present invention;

[0055] Figure 3 It is a schematic structural diagram of the electronic device provided by the present invention. Detailed Embodiments

[0056] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0057] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0058] The control method, control device and air duct machine of the present invention will be described below with reference to the accompanying drawings. Among them, before the embodiments of the present invention are described in detail, the entire application scenario will be described first. The control method, control device, electronic device and computer-readable storage medium of the air duct machine according to the embodiments of the present invention can be applied not only to the local area of the air duct machine, but also to the cloud platform in the Internet field, or the cloud platform in other types of Internet fields, or can also be applied to third-party devices. Among them, the third-party devices may include various different types such as mobile phones, tablets, notebooks, in-vehicle computers and other intelligent terminals.

[0059] Only the control method applicable to the air duct machine will be described below as an example. It should be understood that the control method of the embodiments of the present invention can also be applied to the cloud platform and third-party devices. It should also be pointed out that the air duct machine based on the control method of the present invention includes a first motor and a second motor, and the first motor and the second motor correspond to a first air outlet and a second air outlet respectively.

[0060] As Figure 1 shown, according to the control method of the air duct machine of the first aspect embodiment of the present invention, the method includes:

[0061] Step S1, obtaining the current values of the first motor and the second motor in the air duct machine;

[0062] Step S2, adjusting the working parameters of at least one of the first motor and the second motor according to the current values of the first motor and the second motor.

[0063] According to the control method of the air duct machine of the embodiment of the present invention, its specific working process is as follows: First, the system needs to monitor and obtain the current values of the two motors inside the air duct machine in real time, that is, the first motor and the second motor. These current values reflect the load conditions of the motors at a specific time point. According to the current values obtained in step S1, the system will compare the currents of the first motor and the second motor. If there is a current difference, that is, the load is unbalanced, the system will adjust the working parameters of at least one motor according to the preset control logic. These working parameters may include the speed, voltage, power, etc. of the motor.

[0064] Furthermore, the control method of the air duct machine provided by the present invention has the following specific working principle: By monitoring the current value of the motor, the system can determine which motor has a greater load. A motor with a larger current value means it bears a higher load. Once load imbalance is detected, the system will take measures to adjust the working parameters of the motor. This may involve reducing the speed of the motor with a larger load or adjusting its supply voltage to reduce its current value, thereby achieving the purpose of reducing the load. Through continuous monitoring and adjustment, the system can achieve load balance between the two motors. This dynamic adjustment process ensures that the air duct machine can maintain stable operating performance under different working conditions. In addition, by balancing the loads of the two motors, it is possible to avoid motor overheating, efficiency decline or damage caused by uneven loads, thereby improving the stability and reliability of the entire air duct machine system.

[0065] In this way, through the above control method, the dual-motor air duct machine can operate stably in a high-static pressure environment, while avoiding performance degradation or equipment damage caused by unbalanced motor loads.

[0066] In the related art, currently, air duct machines with a large heat exchange capacity all adopt dual motors to drive the two-side fans to operate under high-speed and high-static pressure conditions, so as to achieve a large air volume. When there is a time difference in the start-up of the two motors or the motor speed increase rates are inconsistent, the motor that starts first or has a higher speed increase rate will pre-rise the static pressure in the air duct in advance. The load of the motor that starts later will be reduced under the applied static pressure, resulting in the phenomenon that the two motors operate at the same speed but have inconsistent loads. It is manifested as a large operating current of the fixed left motor and a small operating current of the right motor. The above phenomenon is likely to cause power fluctuations or even stall of the motor, affecting the stability of the operation of the air duct machine.

[0067] In view of the above situation, in order to solve the technical defects existing in the above related art, the present invention provides a control method for self-balancing the loads of the two-side motors of the air duct machine during start-up and operation, so as to improve the stability of the machine operation in different air duct environments. This method has at least the following advantages compared with the related art:

[0068] (1) Improve operation stability: By real-time monitoring and adjusting the current value of the motor, this method can ensure that the two motors can maintain load balance under different working conditions, thereby improving the operation stability of the air duct machine.

[0069] (2) Avoid power fluctuations and stall: In the case of a time difference in the start-up of the motors or inconsistent speed increase rates, this method can balance the motor loads and avoid power fluctuations or even stall caused by inconsistent loads.

[0070] (3) Extend the equipment life: By preventing motor overload and overheating, this control method helps to extend the service life of the motor and reduce the maintenance cost.

[0071] (4) Improve energy efficiency: By optimizing the load distribution of the motors, this method can improve the energy efficiency of the air duct machine and reduce energy consumption.

[0072] (5) Reduce noise and vibration: By balancing the motor loads, the additional noise and vibration caused by uneven loads can be reduced, improving the working environment.

[0073] (6) Reduce downtime: Through real-time monitoring and quick response, this method can reduce the downtime caused by motor failures and improve production efficiency.

[0074] According to some embodiments of the present invention, the step of adjusting the operating parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor specifically includes:

[0075] Calculate the current difference between the current value of the first motor and the current value of the second motor, and mark the motor with the larger current value among the first motor and the second motor as the motor to be adjusted;

[0076] Adjust the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted.

[0077] In this embodiment, the specific steps of the control method can be further refined as follows:

[0078] First, the system will monitor and obtain the current values of the two motors inside the air duct machine in real time, that is, the current value of the first motor and the current value of the second motor.

[0079] The system will calculate the difference between the current values of the two motors, that is, ΔI = ∣I1 - I2∣, where I1 is the current value of the first motor and I2 is the current value of the second motor. The system will compare the current values of the two motors and mark the motor with the larger current value as the motor to be adjusted. This step is to identify the motor with a larger load for subsequent adjustment.

[0080] According to the calculated current difference ΔI and the current value of the motor to be adjusted, the system will adjust the operating parameters of the motor to be adjusted. The adjustment methods may include but are not limited to: (1) adjusting the supply voltage of the motor; (2) changing the speed of the motor; (3) adjusting the operating mode of the motor (such as switching from constant-speed operation to variable-speed operation).

[0081] Among them, the specific adjustment strategy may be determined according to the current difference and the current value of the motor to be adjusted. For example, if the current difference is large, a larger adjustment of the operating parameters may be required; if the current difference is small, only fine-tuning may be needed.

[0082] After the adjustment is completed, the system will monitor the current values of the two motors again to verify the adjustment effect. If the load is still not balanced, the system will continue to execute the above steps until the loads of the two motors reach a balanced state.

[0083] The system may set a threshold. When the current difference is less than this threshold, it is considered that the motor loads have reached balance, and at this time, the adjustment can be stopped or the next control stage can be entered.

[0084] In this way, the advantage of the above control method is that it can dynamically respond to changes in motor loads and achieve real-time balance of motor loads through precise calculations and adjustments. This not only improves the operating efficiency and stability of the air duct machine, but also helps to extend the service life of the motor, reduce energy consumption, and improve the overall system performance.

[0085] In some embodiments of the present invention, the step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes:

[0086] When the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, control the speed of the motor to be adjusted to decrease by a set adjustment speed based on the target speed; wherein, the set coefficient is less than one.

[0087] In this embodiment, the system will determine whether the current current difference ΔI is greater than the product of the current value of the motor to be adjusted (denoted as I 调节 ) and the set coefficient k, that is, determine whether ΔI > I 调节 ×k. If the current difference is greater than the set threshold (i.e., the product of the current value of the motor to be adjusted and the set coefficient), the system will control the speed of the motor to be adjusted to decrease. Specifically, the speed of the motor to be adjusted will be reduced by a set adjustment speed (denoted as n 调节 ) based on its target speed.

[0088] Among them, the set coefficient k being less than 1 means that only when the current difference reaches a certain proportion (less than 100%) of the current value of the motor to be adjusted will the adjustment of speed reduction be triggered. This can avoid over-adjusting the motor and thus maintain the stability of the system. Further, after adjusting the speed of the motor to be adjusted, the system will continue to monitor the current values of the two motors to determine whether further adjustment is needed.

[0089] In this way, this control method can determine whether to adjust the motor speed and the adjustment amplitude according to the real-time monitoring data through the set coefficient, thus taking into account both the operating stability of the air duct machine and energy efficiency and motor protection.

[0090] In some other embodiments of the present invention, the step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes:

[0091] When the current difference is less than or equal to the product of the current value of the motor to be adjusted and the set coefficient, control the speed of the motor to be adjusted to remain unchanged at the target speed; wherein, the set coefficient is less than one.

[0092] In this embodiment, the system will determine whether the current difference ΔI is less than or equal to the product of the current value of the motor to be adjusted (denoted as I 调节 ) and the set coefficient k, that is, to determine whether ΔI ≤ I 调节 ×k. If the current difference is less than or equal to the set threshold (i.e., the product of the current value of the motor to be adjusted and the set coefficient), the system will control the speed of the motor to be adjusted to remain unchanged at the target speed. This means that the system considers the current load distribution to be acceptable and no additional adjustment is required.

[0093] Among them, the set coefficient being less than 1 ensures that the system will consider the load distribution between the motors to be balanced only when the current difference reaches a small percentage, thus avoiding unnecessary adjustments. Further, even when the speed of the motor to be adjusted remains unchanged, the system will continue to monitor the current values of the two motors to ensure load balance and make adjustments when necessary.

[0094] In this way, this control method can determine whether it is necessary to adjust the operating parameters of the motor according to the real-time monitored current value and the preset threshold, thereby taking into account the actual load conditions of the motor while maintaining the stability and energy efficiency of the system. In this way, the system can flexibly adjust the operating state of the motor under different working conditions to achieve the best performance and efficiency.

[0095] According to some embodiments of the present invention, after the step of controlling the speed of the motor to be adjusted to decrease the set adjustment speed on the basis of the target speed when the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, the method further includes:

[0096] Obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet;

[0097] Control and adjust the speed of the motor to be adjusted according to the first static pressure value and the second static pressure value.

[0098] In this control method, when the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, and after the step of reducing the speed of the motor to be adjusted has been executed, the control method further includes the following steps:

[0099] The system will obtain the first static pressure value p1 of the first air outlet and the second static pressure value p2 of the second air outlet in the air duct machine. These static pressure values reflect the air pressure conditions at the air outlets and are important parameters for evaluating the system performance.

[0100] The system will calculate the difference Δp = ∣p1 - p2∣ between the static pressure values of the two air outlets to evaluate the air pressure balance state inside the air duct machine.

[0101] Based on the first static pressure value and the second static pressure value, the system will further control and adjust the speed of the motor to be adjusted. The specific adjustment strategy may consider the following points:

[0102] (1) If the static pressure difference is large, indicating that the air pressure between the air outlets is unbalanced, the system may further reduce the speed of the motor to be adjusted to reduce the air pressure difference.

[0103] (2) If the static pressure difference is small, indicating that the air pressure is relatively balanced, the system may maintain the current speed or make fine adjustments according to other factors (such as system requirements, energy consumption, etc.).

[0104] In this way, by combining the monitoring of the current difference and the static pressure difference, the system can more comprehensively evaluate the working state of the air duct machine and make dynamic adjustments to achieve the balance of motor load and air pressure. At the same time, this method not only considers the current load of the motor but also the air pressure output of the air duct machine, which helps to optimize the overall performance and energy efficiency of the air duct machine.

[0105] In addition, it can prevent the motor from being damaged due to long-term overload or running under inappropriate working conditions, and extend the service life of the motor. And. By maintaining a stable air pressure output, a more consistent user experience can be provided, especially in application scenarios where precise control of the air volume is required.

[0106] In summary, the advantages of the above steps are that they can comprehensively consider the electrical characteristics (current load) of the motor and the fluid mechanics characteristics (air pressure output) of the air duct machine, and achieve better system performance and higher energy efficiency through a fine control strategy.

[0107] In some embodiments of the present invention, the step of controlling and adjusting the speed of the motor to be adjusted again according to the first static pressure value and the second static pressure value specifically includes:

[0108] When the static pressure difference between the first static pressure value and the second static pressure value is less than the set pressure difference, control the speed of the motor to be adjusted to rise back to the target speed.

[0109] In this embodiment, the system will compare the calculated static pressure difference with a preset pressure difference p 设定 If the monitored static pressure difference Δp is less than the set pressure difference p 设定, which indicates that the static pressures at the two air outlets have reached a relatively balanced state.

[0110] When it is confirmed that the static pressure difference is less than the set value, the system will control the speed of the motor to be adjusted to rise again to its preset target speed. This step is to ensure that the air duct machine can provide the required air volume and static pressure to meet the working conditions.

[0111] In addition, even after the motor speed rises again, the system will continue to monitor the current value of the motor and the static pressure value at the air outlet for further adjustment if necessary.

[0112] In this way, this method enables the system to quickly respond to changes in static pressure and timely adjust the motor speed to maintain the efficient operation of the air duct machine. Moreover, through this adjustment mechanism, the system can optimize energy efficiency and reduce energy consumption while ensuring the performance of the air duct machine. That is, this method can perform precise control based on the actual static pressure feedback to ensure that the air duct machine can maintain the best operating state under various working conditions, taking into account the energy efficiency of the system and the reliability of long-term operation.

[0113] In some other embodiments of the present invention, the step of controlling and adjusting the speed of the motor to be adjusted according to the first static pressure value and the second static pressure value specifically further includes:

[0114] When the static pressure difference between the first static pressure value and the second static pressure value is greater than or equal to the set pressure difference, control the speed of the motor to be adjusted to drop by the set adjustment speed again;

[0115] Re-obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet, and control and adjust the speed of the motor to be adjusted again according to the static pressure difference between the first static pressure value and the second static pressure value until the static pressure difference is less than the set pressure difference.

[0116] In this embodiment, the system will compare the calculated static pressure difference with a preset pressure difference p 设定 If the monitored static pressure difference Δp is greater than or equal to the set pressure difference p 设定 , it indicates that the static pressures between the air outlets are unbalanced, and the system will control the speed of the motor to be adjusted to drop by a set adjustment speed n 调节 .

[0117] After performing the step of reducing the speed, the system will re-obtain the static pressure values of the first air outlet and the second air outlet. The system will recalculate the static pressure difference based on the re-obtained static pressure values and decide whether to further adjust the speed of the motor to be adjusted according to the comparison result between this difference and the set pressure difference.

[0118] This process will be carried out in a loop until the static pressure difference Δp is less than the set pressure difference p设定 At this time, the system considers that the static pressure between the air outlets has reached an acceptable equilibrium state.

[0119] In this way, through this cyclic adjustment mechanism, the system can dynamically adjust the load of the motor to respond to the static pressure changes of the air duct machine under different working conditions. Moreover, by avoiding the motor from operating under too high a static pressure difference, this method helps to protect the motor from overload damage and extend its service life.

[0120] According to some embodiments of the present invention, before the step of obtaining the first current value of the first motor and the second current value of the second motor in the air duct machine, it further includes:

[0121] Obtaining the current working stage of the air duct machine;

[0122] Then the step of obtaining the current value of the first motor and the current value of the second motor in the air duct machine specifically includes:

[0123] Determine that the air duct machine meets the target parameter requirements in the current working stage, and then obtain the current value of the first motor and the current value of the second motor.

[0124] In this embodiment, before monitoring the motor current value, the system first needs to determine the current working stage of the air duct machine. The working stages of the air duct machine may include a startup stage, a running stage, an acceleration stage, a deceleration stage, a shutdown stage, etc.

[0125] The system will judge whether the air duct machine meets the preset target parameter requirements according to the current working stage of the air duct machine. These target parameters may include but are not limited to static pressure value, air volume, temperature, energy consumption, etc.

[0126] If the air duct machine meets the target parameter requirements in the current working stage, the system will obtain the first current value of the first motor and the second current value of the second motor. This step is to prepare for subsequent load balancing control.

[0127] If the air duct machine does not meet the target parameter requirements in the current working stage, the system may take other measures, such as adjusting the motor speed, changing the working mode or sending a warning signal, to prompt the air duct machine to reach the target parameters.

[0128] The system will continuously monitor the working stage and target parameters of the air duct machine, dynamically obtain the motor current value, and perform real-time load balancing control based on these data.

[0129] In this way, by determining the working stage of the air duct machine before obtaining the current value, the system can more accurately judge when load balancing control is required, thereby optimizing the control logic and improving the accuracy and response speed of control. Moreover, this method helps to balance the motor load on the premise that the air duct machine meets the working requirements, avoiding adjustments at unnecessary times, thus protecting the motor and improving energy efficiency.

[0130] In addition, the system can flexibly adjust the control strategy according to the actual working conditions of the air duct machine, improving the adaptability and flexibility of the system. By obtaining the current value and performing load balancing control when the air duct machine meets the target parameter requirements, unnecessary adjustments can be avoided when the air duct machine is in an unstable state, thereby improving the stability of the entire system.

[0131] In some embodiments of the present invention, if the current working stage is the startup stage when the air duct machine just starts, and it is determined that the air duct machine meets the target parameter requirements in the current working stage, the steps of obtaining the current value of the first motor and the current value of the second motor specifically include:

[0132] When the air duct machine is in the startup stage, it is determined that the speeds of the first motor and the second motor of the air duct machine both reach the target startup speed, and then the current value of the first motor and the current value of the second motor are obtained.

[0133] In this embodiment, the system first identifies that the air duct machine is currently in the startup stage, that is, the moment when the air duct machine just starts. In the startup stage, the system monitors the speeds of the first motor and the second motor in the air duct machine.

[0134] The system will judge whether the speeds of the two motors both reach the preset target startup speed. The target startup speed is the speed value that the two motors should reach when the air duct machine starts, to ensure that the air duct machine can smoothly enter the normal operation state.

[0135] When the speeds of the two motors both reach the target startup speed, the system will obtain the current value of the first motor and the current value of the second motor. These current values are crucial for subsequent load balancing control. The obtained current values will be used in the subsequent control logic so that the system can calculate the current difference and adjust the working parameters of the motor according to this difference to achieve load balancing.

[0136] If the motor speed does not reach the target startup speed, the system may adjust the power supply voltage or acceleration command of the motor until the two motors both reach the target speed. This step also includes a protection mechanism, that is, before the motor speed reaches the safe speed, the acquisition of the current value and subsequent load balancing control will not be performed to prevent possible unstable operation and damage to the motor.

[0137] In this way, the above method can optimize the startup process of the air duct machine, ensure the load balance of the motor during the startup phase, reduce the current impact during startup, thereby protecting the motor and improving the startup efficiency. Moreover, by obtaining the current value after the motor speed reaches the target value, the stability of the system during the startup phase can be improved, laying a good foundation for the stable operation of the air duct machine.

[0138] In addition, considering the motor load balance during the startup phase helps to improve the energy efficiency of the entire system and reduce energy waste.

[0139] In some other embodiments of the present invention, when it is determined that the air duct machine meets the target parameter requirements in the current working phase, the steps of obtaining the current value of the first motor and the current value of the second motor specifically include:

[0140] When the air duct machine is in the running phase, if it is determined that the speeds of the first motor and the second motor of the air duct machine both reach the target running speed, or if it is determined that the air duct machine receives a signal for controlling the adjustment of the wind speed gear, then the current value of the first motor and the current value of the second motor are obtained.

[0141] It can be understood that in some other embodiments of the present invention, when the air duct machine is in the running phase, the steps of obtaining the motor current value specifically include the following two situations:

[0142] (1) The speed reaches the target running speed: The system monitors the speeds of the first motor and the second motor in the air duct machine. When the speeds of both motors reach the preset target running speed, the system obtains the current value of the first motor and the current value of the second motor. The target running speed is the speed that the motor of the air duct machine should maintain during the normal running phase.

[0143] (2) Receiving a wind speed gear adjustment signal: The system also monitors the control signal of the air duct machine, especially the wind speed gear adjustment signal issued by the user. When the air duct machine receives a signal for controlling the adjustment of the wind speed gear, regardless of whether the motor speed reaches the target running speed, the system obtains the current value of the first motor and the current value of the second motor. This allows the system to adjust the working state of the motor according to the user's needs or external instructions.

[0144] In any of the above situations, once it is determined that the motor speed reaches the target or a wind speed gear adjustment signal is received, the system obtains the current values of the first motor and the second motor for subsequent load balance control.

[0145] The obtained current values will be used to calculate the current difference between the two motors, and then the working parameters of the motors are adjusted according to the current difference to achieve load balance.

[0146] In this way, the method allows the air duct machine to respond in real time to the user's adjustment requirements for the wind speed gear, improving the system's responsiveness and the user's experience. By monitoring and obtaining the motor current value during the operation phase, the system can keep the air duct machine operating efficiently under different load conditions.

[0147] In addition, the method provides a dynamic adjustment mechanism that enables the air duct machine to adjust the motor operating state in a timely manner according to the actual working conditions and user requirements.

[0148] The control device of the air duct machine provided by the present invention will be described below. The control device of the air duct machine described below can be mutually referred to in correspondence with the control method of the air duct machine described above.

[0149] As Figure 2 shown, for the control device of the air duct machine according to the second aspect embodiment of the present invention, the air duct machine includes a first motor and a second motor, and the first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The device includes:

[0150] An acquisition module 110, configured to acquire the current values of the first motor and the second motor in the air duct machine;

[0151] A control module 120, configured to adjust the working parameters of at least one of the first motor and the second motor according to the current values of the first motor and the second motor.

[0152] For the air duct machine according to the third aspect embodiment of the present invention, the air duct machine includes a first motor and a second motor, and the first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The air duct machine further includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the control method of the air duct machine according to the first aspect embodiment of the present invention.

[0153] Figure 3 An entity structure diagram of an electronic device is exemplified. As Figure 3 shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communication interface 820, and the memory 830 complete mutual communication through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the control method of the air duct machine, including: determining that the air duct machine is turned on and operating stably, then acquiring the outdoor ambient temperature; controlling the air duct machine to enter the low-temperature refrigeration mode according to the outdoor ambient temperature being less than or equal to the first set temperature; and adjusting the working parameters of the air duct machine according to the outdoor ambient temperature in the low-temperature refrigeration mode.

[0154] In addition, when the logical instructions in the above-mentioned memory 830 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, 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 for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0155] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method of the air duct machine provided by the above-mentioned various methods, including: determining that the air duct machine is turned on and running stably, and then obtaining the outdoor ambient temperature; controlling the air duct machine to enter the low-temperature refrigeration mode according to the outdoor ambient temperature being less than or equal to the first set temperature; and adjusting the working parameters of the air duct machine according to the outdoor ambient temperature in the low-temperature refrigeration mode.

[0156] In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the control method of the air duct machine provided by the above-mentioned various methods, including: determining that the air duct machine is turned on and running stably, and then obtaining the outdoor ambient temperature; controlling the air duct machine to enter the low-temperature refrigeration mode according to the outdoor ambient temperature being less than or equal to the first set temperature; and adjusting the working parameters of the air duct machine according to the outdoor ambient temperature in the low-temperature refrigeration mode.

[0157] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0158] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, 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 for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiments.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A control method for an air duct machine, characterized in that, The air duct machine includes a first motor and a second motor. The first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The method includes: Obtain the current value of the first motor and the current value of the second motor in the air duct machine; Adjust the operating parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor.

2. The control method of the air duct machine according to claim 1, wherein The step of adjusting the operating parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor specifically includes: Calculate the current difference between the current value of the first motor and the current value of the second motor, and mark the one with the largest current value among the first motor and the second motor as the motor to be adjusted; Adjust the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted.

3. The control method of the air duct machine according to claim 2, characterized in that The step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes: When the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, control the rotation speed of the motor to be adjusted to decrease by a set adjustment speed on the basis of the target speed; wherein, the set coefficient is less than one.

4. The control method of the air duct machine according to claim 2, characterized in that, The step of adjusting the operating parameters of the motor to be adjusted according to the current difference and the current value of the motor to be adjusted specifically includes: When the current difference is less than or equal to the product of the current value of the motor to be adjusted and the set coefficient, control the rotation speed of the motor to be adjusted to remain unchanged at the target speed; wherein, the set coefficient is less than one.

5. The control method of the air duct machine according to claim 3, characterized in that, After the step of controlling the rotation speed of the motor to be adjusted to decrease by a set adjustment speed on the basis of the target speed when the current difference is greater than the product of the current value of the motor to be adjusted and the set coefficient, it further includes: Obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet; Control and adjust the rotation speed of the motor to be adjusted according to the first static pressure value and the second static pressure value.

6. The control method of the air duct machine according to claim 5, characterized in that The step of controlling and adjusting the rotation speed of the motor to be adjusted again according to the first static pressure value and the second static pressure value specifically includes: When the static pressure difference between the first static pressure value and the second static pressure value is less than the set pressure difference, control the rotation speed of the motor to be adjusted to rise back to the target speed.

7. The control method of the air duct machine according to claim 5, characterized in that The step of controlling and adjusting the rotation speed of the motor to be adjusted again according to the first static pressure value and the second static pressure value specifically further includes: When the static pressure difference between the first static pressure value and the second static pressure value is greater than or equal to the set pressure difference, control the rotation speed of the motor to be adjusted to decrease by the set adjustment speed again; Re-obtain the first static pressure value of the first air outlet and the second static pressure value of the second air outlet, and control and adjust the rotation speed of the motor to be adjusted again according to the static pressure difference between the first static pressure value and the second static pressure value until the static pressure difference is less than the set pressure difference.

8. The control method of the air duct machine according to any one of claims 1 to 7, characterized in that, Before the step of obtaining the first current value of the first motor and the second current value of the second motor in the air duct machine, the following steps are further included: Obtain the current working stage of the air duct machine; Then the step of obtaining the current value of the first motor and the current value of the second motor in the air duct machine specifically includes: If it is determined that the air duct machine meets the target parameter requirements in the current working stage, then obtain the current value of the first motor and the current value of the second motor.

9. The control method of the air duct machine according to claim 8, characterized in that, The step of determining that the air duct machine meets the target parameter requirements in the current working stage and then obtaining the current value of the first motor and the current value of the second motor specifically includes: When the air duct machine is in the startup stage, if it is determined that the rotational speeds of the first motor and the second motor of the air duct machine both reach the target startup rotational speed, then obtain the current value of the first motor and the current value of the second motor.

10. The control method of the air duct machine according to claim 8, characterized in that, The step of determining that the air duct machine meets the target parameter requirements in the current working stage and then obtaining the current value of the first motor and the current value of the second motor specifically includes: When the air duct machine is in the running stage, if it is determined that the rotational speeds of the first motor and the second motor of the air duct machine both reach the target running rotational speed, or if it is determined that the air duct machine receives a signal for controlling the adjustment of the wind speed gear, then obtain the current value of the first motor and the current value of the second motor.

11. A control device for an air duct machine, characterized in that, The air duct machine includes a first motor and a second motor, and the first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The device includes: An acquisition module, configured to acquire the current value of the first motor and the current value of the second motor in the air duct machine; A control module, configured to adjust the working parameters of at least one of the first motor and the second motor according to the current value of the first motor and the current value of the second motor.

12. An air duct machine, characterized in that, The air duct machine includes a first motor and a second motor, and the first motor and the second motor respectively correspond to a first air outlet and a second air outlet. The air duct machine further includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the control method of the air duct machine according to any one of claims 1 to 10.

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