Air deflector control method and device and air conditioning unit

Abstract

The invention discloses an air deflector control method and device and an air conditioning unit, and the method comprises the steps that when an air deflector opening instruction is received, the starting rotating speed of a left motor and the starting rotating speed of a right motor are determined; wherein the starting rotating speed of the left motor is different from the starting rotating speed of the right motor; controlling the operation of the left motor according to the starting rotating speed of the left motor, and controlling the operation of the right motor according to the starting rotating speed of the right motor. Through the difference value of the starting rotating speeds of the left motor and the right motor, the problem that in the prior art, the position of an air conditioner air deflector changes suddenly in the rotating process is solved, stable rotation of the air deflector is achieved, the control precision of the air deflector is effectively improved, and the air outlet effect of an air conditioner is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air guide plate control method, device and air conditioning unit. Background Art

[0002] The air guide plate is the main component of the air conditioner used to supply air in a specified direction. The air guide plate is connected to the stepper motor through a mechanical structure, and the stepper motor drives the guide plate to rotate, thereby adjusting the angle to control the wind direction.

[0003] There are gaps in mechanical structures. The main function of the gaps is to allow a certain amount of space between parts to accommodate manufacturing errors and wear during operation, thereby reducing friction and wear and extending the life of parts.

[0004] There is also a gap in the air guide plate. Due to the existence of the gap, when the stepper motor controls the movement of the air guide plate, the sawtooth of the transmission device will push the air guide plate to move. At this time, the gap is in front of the movement direction of the air guide plate. When the air guide plate moves through the critical position (i.e. the gravity balance point), due to the effect of gravity, the limit device (sawtooth) is immediately lost in front of the movement until it moves to the position where the limit device is located. In this process, the position of the air guide plate changes suddenly, and there will be a sudden change in the wind guide angle, which is not conducive to control and use.

[0005] With regard to the problem of sudden position change of the air guide plate of an air conditioner during rotation in the related art, no effective solution has been proposed so far. Summary of the invention

[0006] The present invention provides a method and device for controlling an air guide plate and an air conditioning unit, so as to at least solve the problem of sudden position change of the air guide plate of the air conditioner during its rotation in the prior art.

[0007] In order to solve the above technical problems, according to one aspect of an embodiment of the present invention, a method for controlling an air guide plate is provided, in which the air guide plate is rotated by a left motor and a right motor installed on both sides, and the method includes: when receiving an air guide plate opening instruction, determining the opening speed of the left motor and the opening speed of the right motor; wherein the opening speed of the left motor and the opening speed of the right motor are different; controlling the operation of the left motor according to the opening speed of the left motor, and controlling the operation of the right motor according to the opening speed of the right motor.

[0008] Furthermore, after controlling the operation of the right motor according to the start-up speed of the right motor, it also includes: detecting the operating current of the left motor and the operating current of the right motor; when the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, controlling the current speed of the left motor to be consistent with the current speed of the right motor.

[0009] Furthermore, after controlling the current speed of the left motor to be consistent with the current speed of the right motor, it also includes: re-detecting the operating current of the left motor and the operating current of the right motor; calculating the operating current change rate of the left motor or the operating current change rate of the right motor; determining the current operating state of the air guide plate according to the operating current change rate of the left motor or the operating current change rate of the right motor; wherein the current operating state of the air guide plate includes at least one of the following: an over-balanced state, an increased gap state; adjusting the speed of the left motor and the speed of the right motor according to the current operating state of the air guide plate.

[0010] Further, calculating the operating current change rate of the left motor or the operating current change rate of the right motor includes: detecting the operating stage of the air guide plate; wherein the operating stage of the air guide plate includes at least: an opening stage and a closing stage; when the operating stage of the air guide plate is the opening stage, calculating the operating current change rate of the right motor, and when the operating stage of the air guide plate is the closing stage, calculating the operating current change rate of the left motor, or, when the operating stage of the air guide plate is the opening stage, calculating the operating current change rate of the left motor, and when the operating stage of the air guide plate is the closing stage, calculating the operating current change rate of the right motor.

[0011] Furthermore, the operating current change rate is calculated in the following manner: obtaining a current sampling period; wherein the difference between the start-up speed of the left motor and the start-up speed of the right motor is related to the current sampling period, and the greater the difference between the start-up speed of the left motor and the start-up speed of the right motor, the shorter the current sampling period; calculating the difference between each two adjacent sampled currents as the current change value; calculating the difference between two adjacent current change values ​​as the operating current change rate.

[0012] Furthermore, the current operating state of the air guide plate is determined according to the operating current change rate of the left motor or the operating current change rate of the right motor, including: when the operating current change rate of the left motor or the operating current change rate of the right motor is less than a first preset threshold value, determining that the current operating state of the air guide plate is the impending overbalanced state; when the operating current change rate of the left motor or the operating current change rate of the right motor is greater than a second preset threshold value, determining that the current operating state of the air guide plate is the gap increasing state.

[0013] Furthermore, the rotational speeds of the left motor and the right motor are adjusted according to the current operating state of the air guide plate, including: when the current operating state of the air guide plate is the impending overbalance state, the rotational speeds of the left motor and the right motor are simultaneously adjusted to a first preset rotational speed; wherein the first preset rotational speed is the smaller of the start-up speed of the left motor and the start-up speed of the right motor; when the current operating state of the air guide plate is the gap increase state, the rotational speeds of the left motor and the right motor are simultaneously adjusted to their own start-up speeds, until the operating current change rate of the left motor or the operating current change rate of the right motor is less than or equal to a third preset threshold value, and then the rotational speeds of the left motor and the right motor are simultaneously adjusted to a second preset rotational speed; wherein the second preset rotational speed is the larger of the start-up speed of the left motor and the start-up speed of the right motor.

[0014] According to another aspect of an embodiment of the present invention, a wind deflector control device is provided, in which the wind deflector is rotated by a left motor and a right motor installed on both sides, and the device includes: a determination module, for determining the opening speed of the left motor and the opening speed of the right motor when receiving an opening instruction of the wind deflector; wherein the opening speed of the left motor and the opening speed of the right motor are different; and a control module, for controlling the operation of the left motor according to the opening speed of the left motor, and controlling the operation of the right motor according to the opening speed of the right motor.

[0015] According to another aspect of an embodiment of the present invention, there is provided an air conditioning unit, comprising the air guide plate control device as described above.

[0016] According to another aspect of an embodiment of the present invention, there is provided a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute the air deflector control method as described above when executed by a computer processor.

[0017] In the present invention, a control scheme for an air deflector is provided. Based on the left motor and the right motor installed on both sides of the air deflector, when receiving the air deflector opening command, the operation of the left motor and the right motor is controlled according to different opening speeds. When the running speeds of the left motor and the right motor are inconsistent, the transmission speeds of the left motor and the right motor will be different, and the gap between the air deflector and the gear of the transmission will be reduced, and then the air deflector is clamped by the gears of the left and right motors. Therefore, when the air deflector moves through the critical position, it is limited by the gear of the transmission device, and there will be no sudden change in the air guide angle, so that the air deflector is controlled to run smoothly. Therefore, the air deflector control scheme in the present invention effectively solves the problem of sudden position change during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the accuracy of the air deflector control, ensures the accuracy of the air outlet angle, and improves the air outlet effect of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an optional installation and connection diagram of an air guide plate according to an embodiment of the present invention;

[0019] Figure 2 is an optional motion schematic diagram of two motors and an air guide plate according to an embodiment of the present invention;

[0020] Figure 3 is an optional control circuit diagram of an air deflector according to an embodiment of the present invention;

[0021] Figure 4 is an optional flow chart of a method for controlling an air deflector according to an embodiment of the present invention;

[0022] Figure 5 is another optional flow chart of the air guide plate control method according to an embodiment of the present invention;

[0023] Figure 6 is another optional flow chart of the air guide plate control method according to an embodiment of the present invention;

[0024] Figure 7 This is an optional structural block diagram of the air guide plate control device according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Air guide plate; 2. Transmission device; 3. Left motor; 4. Right motor; 5. Gap; 6. Controller; 7. Drive chip; 8. Current detection point. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0029] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] It should be understood that although the terms first, second, third, etc. may be used to describe controllers in embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of embodiments of the present invention, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.

[0031] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0032] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0033] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] In the preferred embodiment 1 of the present invention, a method for controlling an air guide plate is provided. The method can be directly applied to various air guide plates, or to other devices having an air guide plate function. When implemented specifically, the method can be implemented by installing software or an APP on an air-conditioning unit or other device, or by writing a corresponding program into a controller.

[0036] Specifically, Figure 1 An optional installation connection diagram of the air guide plate is shown, such as Figure 1 As shown, the transmission device 2 may be a gear, and the teeth of the gear limit the air guide plate 1 to drive the movement of the air guide plate 1 .

[0037] Figure 2 A schematic diagram showing an optional movement of two motors and air guide plates, Figure 2 The left motor 3 and the right motor 4 are respectively described in front view. Figure 2 As shown, the air guide plate 1 is controlled by two motors in opposite directions at the same time. The two motors rotate in opposite directions, so that the air guide plate 1 moves in one direction. The following will use the terms opening the air guide plate 1 and closing the air guide plate 1, and the rotation direction of the opening and closing of the air guide plate. The left motor 3 and the right motor 4 refer to the locations where the motors are installed, and are referred to as left and right. Figure 2 The position of the gap between the air guide plate, i.e., the gap 5 between the air guide plate 1 and the serrations of the gear, is also shown. Due to the existence of the gap, when the air guide plate 1 passes the gravity balance point during the adjustment process, there will be a sudden change in the angle of the air guide 1, which is not conducive to the control and use of the air guide plate 1.

[0038] Figure 3 An optional control circuit diagram of the air guide plate is shown, such as Figure 3 As shown, the controller 6 is connected to the driving chip 7, and the driving chip 7 is connected to the motor, which provides kinetic energy for the driving device. A current measuring point 8 is installed between the motor and the controller for detecting the output current of the motor. The control scheme of the present invention is based on the above control circuit, and does not require the addition of additional structures or improvements to the structure. It only needs to detect the output current of the motor and perform corresponding control according to the current to eliminate the problem of inaccurate control caused by the mechanical gap of the air guide plate.

[0039] Based on the above structure, Figure 4 An optional flow chart of the method is shown as follows: Figure 4 As shown, the method includes the following steps S402-S404:

[0040] S402: When receiving the air guide plate opening instruction, determine the opening speed of the left motor and the opening speed of the right motor; wherein, the opening speed of the left motor and the opening speed of the right motor are different; for example, when the air guide plate is opened, the rotation speed of the left motor is V1 (excitation time is T1) at startup, and the rotation speed of the right motor is 2 times V1 (excitation time is T1 / 2), so that the running speeds of the two are inconsistent. At this time, the gap between the air guide plate and the transmission device will be reduced, causing the air guide plate to be clamped by the gears due to the speed difference between the two motors. The rotation speed of the above-mentioned right motor is twice the rotation speed of the left motor. Of course, other multiples can also be used, and the multiple can be increased according to the speed to be adjusted. The larger the multiple, the greater the speed difference, and the faster the gap of the air guide plate will decrease;

[0041] S404: Controlling the operation of the left motor according to the start-up speed of the left motor, and controlling the operation of the right motor according to the start-up speed of the right motor.

[0042] In the above embodiment, a control scheme for the air deflector is provided, based on the left motor and the right motor installed on both sides of the air deflector, when receiving the air deflector opening command, the operation of the left motor and the right motor is controlled according to different opening speeds. When the operating speeds of the left motor and the right motor are inconsistent, the transmission speeds of the left motor and the right motor will be different, the gap between the air deflector and the gear of the transmission will be reduced, and then the air deflector is clamped by the gears of the left and right motors. Therefore, when the air deflector moves through the critical position, it is limited by the gear of the transmission device, and there will be no sudden change in the air guide angle, so that the air deflector is controlled to run smoothly. Therefore, the air deflector control scheme in the present invention effectively solves the problem of sudden position change during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the accuracy of the air deflector control, ensures the accuracy of the air outlet angle, and improves the air outlet effect of the air conditioner.

[0043] In a preferred embodiment of the present invention, after controlling the operation of the right motor according to the start-up speed of the right motor, it also includes: detecting the operating current of the left motor and the operating current of the right motor; when the operating current of the left motor is greater than the current threshold of the left motor or the operating current of the right motor is greater than the current threshold of the right motor, controlling the current speed of the left motor to be consistent with the current speed of the right motor. In order to prevent the air guide plate from being damaged by the excessive speed difference between the two motors, when the current of any one of the two motors is greater than its respective threshold (the detection threshold of the left motor is I threshold 1, and the detection threshold of the right motor is I threshold 2), the speed will be synchronized. After the speed is synchronized, due to the change in the angle of the air guide plate during the rotation of the air guide plate, the gap between the air guide plate and the transmission device may increase, so the second stage of control is entered, and the current of the point machine is used to determine the state of the air guide plate for further control.

[0044] When the motor drives the load, the input power of the motor is the voltage multiplied by the current U*I. When the output power of the motor increases, the input power will also increase. At this time, U is constant, and I will change with the change of power. By detecting the value of I, the load condition of the motor at this time can be understood. The present invention analyzes the air guide plate gap through the change of current, and then executes the corresponding control strategy.

[0045] After controlling the current speed of the left motor to be consistent with the current speed of the right motor, it also includes: re-detecting the operating current of the left motor and the operating current of the right motor; calculating the operating current change rate of the left motor or the operating current change rate of the right motor; determining the current operating state of the air guide plate according to the operating current change rate of the left motor or the operating current change rate of the right motor; wherein the current operating state of the air guide plate includes at least one of the following: an over-balanced state, an increased gap state; adjusting the speed of the left motor and the speed of the right motor according to the current operating state of the air guide plate. The operating current of the motor is affected by the force between the air guide plate and the transmission device. The greater the force, the greater the current, and the smaller the force, the smaller the current. For the force, it is determined by the angle of the air guide plate. When the air guide plate is in the balanced position, the force is the smallest, so it can be determined by sampling the current when it is about to be over-balanced. In addition, when the gap increases, the air guide plate will shake, so it can also be determined by current.

[0046] Specifically, the current operating state of the air deflector is determined according to the operating current change rate of the left motor or the operating current change rate of the right motor, including: when the operating current change rate of the left motor or the operating current change rate of the right motor is less than the first preset threshold, the current operating state of the air deflector is determined to be an over-balanced state; when the operating current change rate of the left motor or the operating current change rate of the right motor is greater than the second preset threshold, the current operating state of the air deflector is determined to be an increased gap state. During the rotation of the air deflector, the resistance to the motor will gradually decrease due to the change in the angle of the air deflector. When the operating current change rate is less than the first preset threshold, the air deflector will be in an over-balanced state. When the operating current change rate is greater than the second preset threshold, jitter will occur when the gap of the air deflector increases. In summary, the present invention uses the current of the motor to detect the state of the air deflector for further control to improve the accuracy of the air deflector control.

[0047] In the above embodiment, calculating the running current change rate of the left motor or the running current change rate of the right motor includes: detecting the running stage of the air deflector; wherein the running stage of the air deflector includes at least: an opening stage and a closing stage; when the running stage of the air deflector is the opening stage, calculating the running current change rate of the right motor, and when the running stage of the air deflector is the closing stage, calculating the running current change rate of the left motor, or, when the running stage of the air deflector is the opening stage, calculating the running current change rate of the left motor, and when the running stage of the air deflector is the closing stage, calculating the running current change rate of the right motor. In order to ensure the accuracy of the sampled current, the running currents of different motors are used in the opening stage and the closing stage respectively, so as to avoid the situation where the current sampling value of one of the motors is inaccurate or has a large error, thereby improving the accuracy of judgment and control.

[0048] Optionally, the running current change rate is calculated in the following manner: obtaining the current sampling period; wherein the difference between the opening speed of the left motor and the opening speed of the right motor is related to the current sampling period, and the greater the difference between the opening speed of the left motor and the opening speed of the right motor, the shorter the current sampling period; calculating the difference between each two adjacent sampling currents as the current change value; calculating the difference between the two adjacent current change values ​​as the running current change rate. As mentioned above, the rotation speed of the above-mentioned right motor is twice the rotation speed of the left point motor. Of course, other multiples can also be used, and the multiple can be increased according to the speed to be adjusted. The larger the multiple, the greater the speed difference, and the faster the gap of the air guide plate will decrease. However, too large a multiple will also have adverse effects. The faster the speed, the less time the controller has to react. Therefore, the frequency of sampling current will need to be increased, otherwise the sampling will be inaccurate, resulting in damage to the air guide plate. Therefore, for the accuracy and safety of control, the above multiples are often in a suitable range, which is determined based on the comprehensive consideration of control accuracy and actual hardware (chip performance, sampling circuit hardware structure, etc.).

[0049] In another preferred embodiment of the present invention, the rotation speed of the left motor and the rotation speed of the right motor are adjusted according to the current operating state of the air deflector, including: when the current operating state of the air deflector is about to be overbalanced, the rotation speed of the left motor and the rotation speed of the right motor are adjusted to the first preset rotation speed at the same time; wherein the first preset rotation speed is the smaller of the opening rotation speed of the left motor and the opening rotation speed of the right motor; that is, when the air deflector is about to be overbalanced, the rotation speed of the motor is reduced to maintain the smooth rotation of the air deflector. When the current operating state of the air deflector is the gap increase state, the rotation speed of the left motor and the rotation speed of the right motor are adjusted to their own opening rotation speeds at the same time, until the running current change rate of the left motor or the running current change rate of the right motor is less than or equal to the third preset threshold, the rotation speed of the left motor and the rotation speed of the right motor are adjusted to the second preset rotation speed at the same time; wherein the second preset rotation speed is the larger of the opening rotation speed of the left motor and the opening rotation speed of the right motor. In order to avoid jitter, it is necessary to increase the speed difference between the two motors, and adjust the rotation speed of the left motor and the rotation speed of the right motor to their own opening rotation speeds at the same time to clamp the air deflector to avoid sudden changes in the position of the air deflector. Afterwards, after the current change rate decreases, the rotation speeds of the left motor and the right motor are simultaneously adjusted to the second preset rotation speed, that is, the rotation speeds of the motors are increased, and the air guide plates are quickly adjusted to the required angle.

[0050] Another air guide plate control method is also provided in the preferred embodiment 1 of the present invention. Specifically, Figure 5 An optional flow chart of the method is shown, which is a control method for the opening process of the air guide plate, such as Figure 5 As shown, the method includes the following steps S501-S513:

[0051] S501: Start;

[0052] S502: receiving an air guide plate opening command;

[0053] S503: The speed of the left motor is V1, and the speed of the right motor is 2×V1; when the air guide plate is turned on, the rotation speed of the left motor is V1 (excitation time is T1), and the rotation speed of the right motor is 2 times V1 (excitation time is T1 / 2), so that the running speeds of the two motors are inconsistent, and the air guide plate will be clamped by the gears due to the speed difference between the two motors;

[0054] S504: Whether the left motor detects current I1>I1 threshold, or the right motor detects current I2>I2 threshold, if yes, proceed to step S505, otherwise proceed to step S503; in order to prevent the air guide plate from being damaged by excessive speed difference between the two motors, when the current of any one of the two motors is greater than the respective thresholds (I threshold 1 and I threshold 2), the speeds will be synchronized;

[0055] S505: The speed of the left motor is adjusted to 2×V1, that is, V1=V2; both motors run at a speed twice that of V1, and then enter the second stage of control;

[0056] S506: Is ||△In|-|△Il||<△I threshold 1 established? If yes, go to step S507, otherwise go to step S506 again; in the second stage control, the current sampling period is t, and △I=In–Il is the rate of change of the right motor, where In is the current at the current detection moment, and Il is the current at the previous moment. △In is the difference calculated by the right motor this time (the difference between the current sampling current and the previous sampling current), and △Il is the difference calculated by the right motor last time (the difference between the previous sampling current and the previous sampling current);

[0057] S507: The speeds of the left and right motors are adjusted to V1. During the adjustment, the resistance to the motors will gradually decrease due to the change in the angle of the air guide plate. Therefore, under normal circumstances, |△In|<|△Il|, and △In<0, △Il<0. When ||△In|-|△Il||<△I threshold 1, the air guide plate will be in an over-balanced state. At this time, the speeds of the left and right motors are adjusted to V1 (deceleration) at the same time.

[0058] S508: Is |△In|-|△Il|>△I threshold 2 established? If yes, proceed to step S509; otherwise, proceed to step S507;

[0059] S509: The speed of the left motor is V1, and the speed of the right motor is 2×V1; when |△In|-|△Il|>△I threshold 2, the speed change rate is greater than a certain threshold, then the gap between the air guide plates increases, and jitter will occur, so it is necessary to further increase the speed difference to clamp the air guide plates, and at this time the speed of the right motor is adjusted to 2 times V1;

[0060] S510: Is |△In|-|△Il|<=△I threshold 3 established? If so, proceed to step S511; otherwise, proceed to step S509;

[0061] S511: The speed of the left motor is adjusted to 2×V1, that is, V1=V2; the speed of the motor is adjusted until |△In|-|△Il|<=△I threshold 3, and the speed of the two motors is adjusted to be synchronized to 2 times V1;

[0062] S512: The air guide plate moves to a specified position, and the left and right motors stop;

[0063] S513: End.

[0064] When closing the air guide plate, the adjustment method is the same as opening it, but the motor can be adjusted to switch left and right. Figure 6 ,like Figure 6 As shown, the method includes the following steps S601-S613:

[0065] S601: Start;

[0066] S602: receiving an air guide plate opening command;

[0067] S603: The speed of the right motor is V1, and the speed of the left motor is 2×V1; when the air guide plate is turned on, the rotation speed of the right motor is V1 (excitation time is T1), and the rotation speed of the left motor is 2 times V1 (excitation time is T1 / 2), so that the running speeds of the two motors are inconsistent, and the air guide plate will be clamped by the gears due to the speed difference between the two motors;

[0068] S604: Whether the left motor detects current I1>I1 threshold, or the right motor detects current I2>I2 threshold, if yes, proceed to step S606, otherwise proceed to step S603; in order to prevent the air guide plate from being damaged by excessive speed difference between the two motors, when the current of any one of the two motors is greater than the respective thresholds (I threshold 1 and I threshold 2), the speeds will be synchronized;

[0069] S605: The speed of the right motor is adjusted to 2×V1, that is, V1=V2; both motors run at a speed twice that of V1, and then enter the second stage of control;

[0070] S606: Is ||△In|-|△Il||<△I threshold 1 established? If yes, go to step S607, otherwise go to step S606 again; in the second stage control, the current sampling period is t, and △I=In–Il is the rate of change of the left motor, where In is the current at the current detection moment, and Il is the current at the previous moment. △In is the difference calculated by the left motor this time (the difference between the current sampling current and the previous sampling current), and △Il is the difference calculated by the left motor last time (the difference between the previous sampling current and the previous sampling current);

[0071] S607: The speeds of the left and right motors are adjusted to V1. During the adjustment, the resistance to the motors will gradually decrease due to the change in the angle of the air guide plate. Therefore, under normal circumstances, |△In|<|△Il|, and △In<0, △Il<0. When ||△In|-|△Il||<△I threshold 1, the air guide plate will be in an over-balanced state. At this time, the speeds of the left and right motors are adjusted to V1 (deceleration) at the same time.

[0072] S608: Is |△In|-|△Il|>△I threshold 2 established? If yes, proceed to step S609; otherwise, proceed to step S607;

[0073] S609: The speed of the right motor is V1, and the speed of the left motor is 2×V1; when |△In|-|△Il|>△I threshold 2, the speed change rate is greater than a certain threshold, then the gap between the air guide plates increases, and jitter occurs, so it is necessary to further increase the speed difference to clamp the air guide plates, and at this time the speed of the right motor is adjusted to 2 times V1;

[0074] S610: Is |△In|-|△Il|<=△I threshold 3 established? If so, proceed to step S611; otherwise, proceed to step S609;

[0075] S611: The speed of the right motor is adjusted to 2×V1, that is, V1=V2; the speed of the motor is adjusted until |△In|-|△Il|<=△I threshold 3, and the speed of the two motors is adjusted to be synchronized to 2 times V1;

[0076] S612: The air guide plate moves to a specified position, and the left and right motors stop;

[0077] S613: End.

[0078] The present invention optimizes the control of the guide plate rotation on an existing mechanical structure with an existing gap, and solves the problem of sudden changes in the control of the air guide plate due to the mechanical gap during the operation of the air guide plate through software control. The present invention does not damage the hardware structure and does not affect the use of users. The cost is low and the effect is good, and the reliability and accuracy of the operation of the air guide plate are improved.

[0079] Example 2

[0080] Based on the air deflector control method provided in the above embodiment 1, a preferred embodiment 2 of the present invention further provides an air deflector control device, specifically, Figure 7 An optional structural block diagram of the device is shown, such as Figure 7 As shown, the device comprises:

[0081] A determination module 702 is used to determine the opening speed of the left motor and the opening speed of the right motor when receiving the air guide plate opening instruction; wherein the opening speed of the left motor and the opening speed of the right motor are different;

[0082] The control module 704 is connected to the determination module 702, and is used to control the operation of the left motor according to the start-up speed of the left motor, and to control the operation of the right motor according to the start-up speed of the right motor.

[0083] In the above embodiment, a control scheme for the air deflector is provided, based on the left motor and the right motor installed on both sides of the air deflector, when receiving the air deflector opening command, the operation of the left motor and the right motor is controlled according to different opening speeds. When the operating speeds of the left motor and the right motor are inconsistent, the transmission speeds of the left motor and the right motor will be different, the gap between the air deflector and the gear of the transmission will be reduced, and then the air deflector is clamped by the gears of the left and right motors. Therefore, when the air deflector moves through the critical position, it is limited by the gear of the transmission device, and there will be no sudden change in the air guide angle, so that the air deflector is controlled to run smoothly. Therefore, the air deflector control scheme in the present invention effectively solves the problem of sudden position change during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the accuracy of the air deflector control, ensures the accuracy of the air outlet angle, and improves the air outlet effect of the air conditioner.

[0084] The device also includes: a stabilization module, which is used to detect the operating current of the left motor and the operating current of the right motor after controlling the operation of the right motor according to the start-up speed of the right motor; when the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, control the current speed of the left motor to be consistent with the current speed of the right motor.

[0085] Furthermore, the device also includes: a current control module, including: a current detection submodule, used to re-detect the operating current of the left motor and the operating current of the right motor after controlling the current speed of the left motor to be consistent with the current speed of the right motor; a calculation submodule, used to calculate the operating current change rate of the left motor or the operating current change rate of the right motor; a determination submodule, used to determine the current operating state of the air guide plate according to the operating current change rate of the left motor or the operating current change rate of the right motor; wherein the current operating state of the air guide plate includes at least one of the following: an over-balanced state, an increased gap state; an adjustment submodule, used to adjust the speed of the left motor and the speed of the right motor according to the current operating state of the air guide plate.

[0086] The calculation submodule includes: a detection unit, used to detect the operation stage of the air deflector; wherein the operation stage of the air deflector includes at least: an opening stage and a closing stage; a calculation unit, used to calculate the operation current change rate of the right motor when the operation stage of the air deflector is the opening stage, and calculate the operation current change rate of the left motor when the operation stage of the air deflector is the closing stage, or, when the operation stage of the air deflector is the opening stage, calculate the operation current change rate of the left motor, and when the operation stage of the air deflector is the closing stage, calculate the operation current change rate of the right motor.

[0087] Furthermore, the running current change rate is calculated in the following manner: obtaining the current sampling period; wherein the difference between the start-up speed of the left motor and the start-up speed of the right motor is related to the current sampling period, and the greater the difference between the start-up speed of the left motor and the start-up speed of the right motor, the shorter the current sampling period; calculating the difference between each two adjacent sampled currents as the current change value; calculating the difference between two adjacent current change values ​​as the running current change rate.

[0088] The determination submodule includes: a first determination unit, used to determine that the current operating state of the air guide plate is an impending overbalanced state when the operating current change rate of the left motor or the operating current change rate of the right motor is less than a first preset threshold value; a second determination unit, used to determine that the current operating state of the air guide plate is an increased gap state when the operating current change rate of the left motor or the operating current change rate of the right motor is greater than a second preset threshold value.

[0089] The adjustment submodule includes: a first adjustment unit, which is used to adjust the speeds of the left motor and the right motor to a first preset speed at the same time when the current operating state of the air guide plate is an over-balanced state; wherein the first preset speed is the smaller of the start-up speed of the left motor and the start-up speed of the right motor; a second adjustment unit, which is used to adjust the speeds of the left motor and the right motor to their own start-up speeds at the same time when the current operating state of the air guide plate is an increased gap state, until the operating current change rate of the left motor or the operating current change rate of the right motor is less than or equal to a third preset threshold, and then adjust the speeds of the left motor and the right motor to a second preset speed at the same time; wherein the second preset speed is the larger of the start-up speed of the left motor and the start-up speed of the right motor.

[0090] Regarding the device in the above embodiment, the specific manner in which each unit and module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0091] Example 3

[0092] Based on the air deflector control device provided in the above-mentioned embodiment 2, in a preferred embodiment 3 of the present invention, an air conditioning unit is further provided, comprising the air deflector control device as described above.

[0093] In the above embodiment, a control scheme for the air deflector is provided, based on the left motor and the right motor installed on both sides of the air deflector, when receiving the air deflector opening command, the operation of the left motor and the right motor is controlled according to different opening speeds. When the operating speeds of the left motor and the right motor are inconsistent, the transmission speeds of the left motor and the right motor will be different, the gap between the air deflector and the gear of the transmission will be reduced, and then the air deflector is clamped by the gears of the left and right motors. Therefore, when the air deflector moves through the critical position, it is limited by the gear of the transmission device, and there will be no sudden change in the air guide angle, so that the air deflector is controlled to run smoothly. Therefore, the air deflector control scheme in the present invention effectively solves the problem of sudden position change during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the accuracy of the air deflector control, ensures the accuracy of the air outlet angle, and improves the air outlet effect of the air conditioner.

[0094] Example 4

[0095] Based on the air deflector control method provided in the above-mentioned embodiment 1, a storage medium containing computer executable instructions is also provided in a preferred embodiment 4 of the present invention. When the computer executable instructions are executed by a computer processor, they are used to execute the air deflector control method as described above.

[0096] In the above embodiment, a control scheme for the air deflector is provided, based on the left motor and the right motor installed on both sides of the air deflector, when receiving the air deflector opening command, the operation of the left motor and the right motor is controlled according to different opening speeds. When the operating speeds of the left motor and the right motor are inconsistent, the transmission speeds of the left motor and the right motor will be different, the gap between the air deflector and the gear of the transmission will be reduced, and then the air deflector is clamped by the gears of the left and right motors. Therefore, when the air deflector moves through the critical position, it is limited by the gear of the transmission device, and there will be no sudden change in the air guide angle, so that the air deflector is controlled to run smoothly. Therefore, the air deflector control scheme in the present invention effectively solves the problem of sudden position change during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the accuracy of the air deflector control, ensures the accuracy of the air outlet angle, and improves the air outlet effect of the air conditioner.

[0097] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0098] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0099] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0100] 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 distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0101] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0102] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0103] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0104] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for controlling an air guide plate, characterized in that: The air guide plate is driven to rotate by a left motor and a right motor installed on both sides, and the method includes: When receiving the air guide plate opening instruction, determining the opening speed of the left motor and the opening speed of the right motor; wherein the opening speed of the left motor and the opening speed of the right motor are different; The operation of the left motor is controlled according to the start-up rotation speed of the left motor, and the operation of the right motor is controlled according to the start-up rotation speed of the right motor.

2. The method according to claim 1, characterized in that After controlling the operation of the right motor according to the start-up speed of the right motor, the method further includes: Detecting the operating current of the left motor and the operating current of the right motor; When the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, the current rotation speed of the left motor is controlled to be consistent with the current rotation speed of the right motor.

3. The method according to claim 2, characterized in that After controlling the current rotation speed of the left motor to be consistent with the current rotation speed of the right motor, the method further includes: Re-detecting the operating current of the left motor and the operating current of the right motor; Calculating the operating current change rate of the left motor or the operating current change rate of the right motor; The current operating state of the air deflector is determined according to the operating current change rate of the left motor or the operating current change rate of the right motor; wherein the current operating state of the air deflector includes at least one of the following: an over-balanced state, a gap increase state; The rotation speeds of the left motor and the right motor are adjusted according to the current operating state of the air guide plate.

4. The method according to claim 3, characterized in that Calculating the running current change rate of the left motor or the running current change rate of the right motor includes: Detecting the operation stage of the air deflector; wherein the operation stage of the air deflector at least includes: an opening stage and a closing stage; When the operating stage of the air guide plate is the opening stage, the operating current change rate of the right motor is calculated; when the operating stage of the air guide plate is the closing stage, the operating current change rate of the left motor is calculated; or, when the operating stage of the air guide plate is the opening stage, the operating current change rate of the left motor is calculated; when the operating stage of the air guide plate is the closing stage, the operating current change rate of the right motor is calculated.

5. The method according to claim 3, characterized in that: The running current change rate is calculated as follows: Obtaining a current sampling period; wherein the difference between the start-up speed of the left motor and the start-up speed of the right motor is related to the current sampling period, and the greater the difference between the start-up speed of the left motor and the start-up speed of the right motor, the shorter the current sampling period; Calculate the difference between two adjacent sampling currents as the current change value; The difference between two adjacent current change values ​​is calculated as the operating current change rate.

6. The method according to claim 3, characterized in that Determining the current operating state of the air guide plate according to the operating current change rate of the left motor or the operating current change rate of the right motor includes: When the running current change rate of the left motor or the running current change rate of the right motor is less than a first preset threshold, determining that the current running state of the air guide plate is the impending overbalance state; When the operating current change rate of the left motor or the operating current change rate of the right motor is greater than a second preset threshold, it is determined that the current operating state of the air guide plate is the gap increase state.

7. The method according to claim 3, characterized in that Adjusting the rotation speed of the left motor and the rotation speed of the right motor according to the current operating state of the air guide plate includes: When the current operating state of the air guide plate is the about-to-be-overbalanced state, the rotation speeds of the left motor and the right motor are simultaneously adjusted to a first preset rotation speed; wherein the first preset rotation speed is the smaller of the start-up rotation speed of the left motor and the start-up rotation speed of the right motor; When the current operating state of the air guide plate is the gap increase state, the rotational speeds of the left motor and the right motor are simultaneously adjusted to their own opening rotational speeds until the operating current change rate of the left motor or the operating current change rate of the right motor is less than or equal to a third preset threshold value, and then the rotational speeds of the left motor and the right motor are simultaneously adjusted to a second preset rotational speed; wherein the second preset rotational speed is the larger of the opening rotational speed of the left motor and the opening rotational speed of the right motor.

8. A wind deflector control device, characterized in that: The air guide plate is driven to rotate by a left motor and a right motor installed on both sides. The device comprises: A determination module, configured to determine the opening speed of the left motor and the opening speed of the right motor when receiving the air guide plate opening instruction; wherein the opening speed of the left motor and the opening speed of the right motor are different; A control module is used to control the operation of the left motor according to the start-up speed of the left motor, and to control the operation of the right motor according to the start-up speed of the right motor.

9. An air conditioning unit, characterized in that: It comprises the air deflector control device as claimed in claim 8.

10. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to perform the wind deflector control method according to any one of claims 1 to 7 when executed by a computer processor.

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