Air conditioner, air guide blade control method and device

Abstract

The present invention relates to the field of air conditioning technology, and in particular, to an air conditioner, an air guide blade control method and device. The air conditioner includes an air conditioner body, an air guide blade and an excitation mechanism; the rotation axis of the air guide blade forms an angle with the vertical direction, and the excitation mechanism includes an excitation coil and a magnetic conductor, and the excitation coil and the magnetic conductor are respectively fixed to the upper side of the air outlet of the air conditioner body and the air guide blade. After the excitation coil is energized, it can generate a magnetic field force toward the excitation coil on the magnetic conductor. The air guide blade control method includes: obtaining the rotation state of the air guide blade; determining the control current value according to the rotation state of the air guide blade; and controlling the excitation coil to be energized according to the control current value. The air conditioner, air guide blade control method and device provided by the present invention can reduce the torque demand of the air guide blade on the stepper motor, and provide feasible conditions for increasing the size of the air guide blade or reducing the volume of the stepper motor.

Description

Technical Field

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

[0002] Air outlets of air conditioners are generally provided with air guide blades to guide airflow and adjust the air outlet angle and air supply distance. Usually, the air guide mechanism includes air guide blades and a stepper motor, and the stepper motor converts electrical energy into mechanical energy to drive the air guide blades to rotate.

[0003] As the requirements for air conditioning comfort increase, higher requirements are put forward for precise air supply. Increasing the size of the air guide blades can achieve the purpose of farther and more precise air supply. However, the increase in the size of the air guide blades will inevitably lead to a larger wind receiving area and weight, which in turn will increase the rotational load of the air guide blades, and the stepper motor needs to provide a larger torque. At present, the torque is generally increased by increasing the size of the stepper motor and increasing the power. However, the increase in the size of the stepper motor will require a larger installation space. Since the air conditioner structure layout is relatively compact, the increase in the size of the stepper motor will make it inconvenient to install, and the temperature of the large-torque stepper motor will rise. Therefore, the size of the air guide blades is difficult to increase. Summary of the invention

[0004] The object of the present invention is to provide an air conditioner, an air guide blade control method and a device to alleviate the technical problem that the size of the air guide blades of the air conditioner in the prior art is difficult to increase.

[0005] The air conditioner provided by the present invention comprises an air conditioner body, air guide blades and an excitation mechanism;

[0006] The rotation axis of the air guide blade forms an angle with the vertical direction. The excitation mechanism includes an excitation coil and a magnetic conductor. The excitation coil and the magnetic conductor are respectively fixed to the upper side of the air outlet of the air conditioner body and the air guide blade. When the excitation coil is energized, it can generate a magnetic field force on the magnetic conductor toward the excitation coil.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] When the stepper motor drives the air guide blade to rotate upward (that is, the angle between the rotation direction of the air guide blade and the vertical upward direction is less than 90 degrees), the excitation coil is energized; after the excitation coil is energized, a magnetic field is generated, which can act on the magnetic conductor, generating a magnetic field force (that is, magnetic field attraction) toward the excitation coil on the magnetic conductor. Since one of the excitation coil and the magnetic conductor is fixed to the upper side of the air outlet of the air conditioner body, and the other is fixed to the air guide blade, the magnetic field attraction can apply an upward thrust to the air guide blade, and the driving torque generated by the thrust on the air guide blade can assist it to move upward. The upward rotation, that is, the magnetic field suction can assist the stepper motor to work, thereby greatly reducing the load of the stepper motor, and then reducing the torque demand of the air guide blades for the stepper motor. On the one hand, the stepper motor can drive larger air guide blades under the same torque, providing feasible conditions for increasing the size of the air guide blades; on the other hand, it is conducive to reducing the size and power of the stepper motor, saving the installation space required for the stepper motor, making the installation of the stepper motor more convenient, and using a small torque stepper motor with a lower temperature rise can improve the service life and stability of the stepper motor.

[0009] As an implementable embodiment, the magnetic conductor is close to the outer edge of the wind guide blade in the open state.

[0010] The beneficial effect is that the current flowing into the excitation coil can be reduced, thereby reducing energy consumption.

[0011] As an implementable embodiment, the excitation coil is fixed to the inner side of the air conditioner body close to the air outlet, and the magnetic conductor is fixed to the inner side of the air guide blade.

[0012] The beneficial effect is that it will not affect the aesthetics of the air conditioner, and is also beneficial to shortening the magnetic conduction distance and improving the magnetic conduction effect.

[0013] The air guide blade control method provided by the present invention is applied to the above air conditioner, and the method comprises:

[0014] Obtaining the rotation state of the air guide blade;

[0015] Determining a control current value according to a rotation state of the air guide blade;

[0016] The excitation coil is energized according to the control current value.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The air guide blade control method provided by the present invention has the beneficial effects of the above-mentioned air conditioner, and can automatically control the excitation coil to be energized when the rotational load of the air guide blade is increased due to the influence of gravity, and can automatically control the excitation coil to be de-energized when the rotational load of the air guide blade is not affected by gravity, thereby timely exerting the load-reducing effect of the excitation mechanism to reduce the load of the stepper motor and reduce the torque demand of the air guide blade on the stepper motor.

[0019] As an implementable method, determining the control current value according to the state of the wind guide blade includes:

[0020] If the air guide blade rotates downward, the control current value is determined to be zero;

[0021] If the air guide blade rotates upward, the control current value is determined to be a positive value.

[0022] The beneficial effect is that the control current value can be determined.

[0023] As an implementable method, obtaining the state of the air guide blade includes:

[0024] Acquiring a control state of a stepper motor, wherein the stepper motor is used to drive the air guide blade to rotate;

[0025] The rotation direction of the air guide blade is determined according to the control state of the stepper motor.

[0026] The beneficial effect is that the rotation direction of the wind guide blade can be indirectly obtained.

[0027] As an implementable embodiment, if the angular displacement of the stepper motor decreases, the air guide blades rotate upward and the opening of the air guide blades decreases; if the angular displacement of the stepper motor increases, the air guide blades rotate downward and the opening of the air guide blades increases.

[0028] The beneficial effect is that the rotation direction of the air guide blade can be determined by acquiring the angular displacement change of the stepper motor.

[0029] As an implementable embodiment, the calculation formula of the control current value is:

[0030] I=T×Ki,

[0031] Wherein, I represents the control current value; T represents the control state of the stepper motor, if the angular displacement of the stepper motor decreases, T is 1, if the angular displacement of the stepper motor increases, T is 0; Ki represents the required excitation intensity coefficient.

[0032] The beneficial effect is that a precise control current value can be obtained to reduce the rotational load of the wind guide blades as much as possible.

[0033] As an implementable embodiment, the required excitation intensity coefficient is proportional to the weight of the air guide blade, proportional to the opening of the air guide blade, and inversely proportional to the torque of the stepper motor.

[0034] The beneficial effect is that the torque generated by the gravity of the air guide blades is offset as much as possible, and the rotational load of the air guide blades is reduced, so that the stepper motor can smoothly drive the air guide blades to rotate.

[0035] The air guide blade control device provided by the present invention is applied to the above air conditioner, and the device comprises:

[0036] An acquisition module, used to acquire the rotation state of the wind guide blade;

[0037] A determination module, used to determine a control current value according to a rotation state of the wind guide blade;

[0038] A control module is used to control the energization of the excitation coil according to the control current value.

[0039] The air guide blade control device provided by the present invention has the same technical effect as the air guide blade control method described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0041] Figure 1 A schematic diagram of a partial structure of an air conditioner provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of a partial structure of an air conditioner from another perspective provided by an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a partial structure of an air conditioner provided by an embodiment of the present invention from another perspective;

[0044] Figure 4 A first schematic flow chart of a method for controlling an air guide blade provided in an embodiment of the present invention;

[0045] Figure 5 A second schematic flow chart of the air guide blade control method provided by an embodiment of the present invention;

[0046] Figure 6 A schematic structural diagram of an air guide blade control device provided in an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 101-air conditioner body; 102-wind guide blades; 103-excitation coil; 104-magnetic conductor; 105-stepping motor;

[0049] 401 - acquisition module; 402 - determination module; 403 - control module. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.

[0051] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0054] See also Figure 1-Figure 3, this embodiment provides an air conditioner, which includes an air conditioner body 101, air guide blades 102 and an excitation mechanism; the rotation axis of the air guide blades 102 forms an angle with the vertical direction, and the excitation mechanism includes an excitation coil 103 and a magnetic conductor 104, the excitation coil 103 and the magnetic conductor 104 are respectively fixed to the upper side of the air outlet of the air conditioner body 101 and the air guide blades 102, and the magnetic field force acting on the magnetic conductor 104 is toward the excitation coil 103 after the excitation coil 103 is energized. Among them, when the excitation coil 103 is fixed to the upper side of the air outlet of the air conditioner body 101, the magnetic conductor 104 is fixed on the air guide blades 102; when the excitation coil 103 is fixed on the air guide blades 102, the magnetic conductor 104 is fixed to the upper side of the air outlet of the air conditioner body 101. For a floor-mounted crane, the rotation axis of its air guide blades 102 is set horizontally.

[0055] When the stepper motor 105 drives the air guide blade 102 to rotate upward (that is, the angle between the rotation direction of the air guide blade 102 and the vertical upward direction is less than 90 degrees), the excitation coil 103 is energized; after the excitation coil 103 is energized, a magnetic field is generated, and the magnetic field can act on the magnetic conductor 104, generating a magnetic field force (that is, magnetic field attraction) toward the excitation coil 103 on the magnetic conductor 104. Since one of the excitation coil 103 and the magnetic conductor 104 is fixed to the upper side of the air outlet of the air conditioner body 101, and the other is fixed to the air guide blade 102, the magnetic field attraction can apply an upward thrust to the air guide blade 102, and the thrust generated on the air guide blade 102 The driving torque can assist Help it to rotate upward, that is, the magnetic field suction can assist the stepper motor 105 to work, thereby, can greatly reduce the load of the stepper motor 105, and then reduce the torque demand of the air guide blade 102 for the stepper motor 105. On the one hand, the stepper motor 105 can drive a larger air guide blade 102 under the same torque, which provides a feasible condition for increasing the size of the air guide blade 102; on the other hand, it is conducive to reducing the volume and power of the stepper motor 105, saving the installation space required for the stepper motor 105, making the installation of the stepper motor 105 more convenient, and using a small torque stepper motor 105, the temperature rise is lower, which can improve the service life and stability of the stepper motor 105.

[0056] Preferably, the magnetic conductor 104 can be arranged at a position close to the outer edge of the air guide blade 102 in the open state (i.e., the upper edge of the air guide blade 102 in the closed state). In this way, the torque applied to the air guide blade 102 by the magnetic field attraction on the magnetic conductor 104 can be increased, thereby reducing the current passed through the excitation coil 103 and further reducing energy consumption.

[0057] In particular, the excitation coil 103 can be fixed to the inner side of the air conditioner body 101 near the air outlet, and the magnetic conductor 104 can be fixed to the inner side of the air guide blade 102, so that the user cannot easily observe the excitation coil 103 and the magnetic conductor 104 from the outside, so that the setting of the excitation mechanism will not affect the aesthetics of the air conditioner, and it is also helpful to shorten the magnetic conduction distance and improve the magnetic conduction effect. It is preferred to fix the magnetic conductor 104 to the inner side of the air guide blade 102 near the outer edge, which is both aesthetically pleasing and can reduce energy consumption.

[0058] The magnetic conductor 104 is a structural component made of a magnetic conductor material, and can work in coordination with the excitation coil 103 .

[0059] Figure 4 A schematic flow chart of a method for controlling an air guide blade provided in one embodiment of the present invention, the method comprising:

[0060] S202, obtaining the rotation state of the air guide blades.

[0061] The air guide blades rotate under the drive of the stepper motor. The control state of the stepper motor can reflect the rotation state of the air guide blades. Therefore, the rotation state of the air guide blades can be determined by acquiring the control state of the stepper motor.

[0062] S204, determining a control current value according to the rotation state of the air guide blades.

[0063] If the air guide blade rotates downward, it means that the angle between the rotation direction of the air guide blade and its gravity direction is less than 90°, and the self-gravity of the air guide blade will not increase the rotation load. At this time, the stepper motor only needs to work normally, and there is no need to use an excitation mechanism to assist its work. The control current value can be determined to be zero; if the air guide blade rotates upward, it means that the angle between the rotation direction of the air guide blade and its gravity direction is greater than 90°, and the self-gravity of the air guide blade will increase the rotation load. At this time, the excitation mechanism is needed to assist the stepper motor to work, and the control current value can be determined to be a positive value.

[0064] S206, controlling the excitation coil to be energized according to the control current value.

[0065] If the air guide blade rotates downward and the control current value is zero, no current flows through the excitation coil and no magnetic field force is generated on the magnetic conductor; if the air guide blade rotates upward and the control current value is positive, current flows through the excitation coil, and the excitation coil with the current flowing through it can generate a magnetic field attraction on the magnetic conductor, and the magnetic field attraction can apply an upward thrust to the air guide blade, and the driving torque generated by the thrust on the air guide blade can assist its upward rotation. That is to say, the air guide blade control method provided in this embodiment can automatically control the excitation coil to be energized when the rotational load of the air guide blade is increased due to the influence of gravity, and can automatically control the excitation coil to be de-energized when the rotational load of the air guide blade is not affected by gravity, thereby timely exerting the load-reducing effect of the excitation mechanism to reduce the load of the stepper motor and reduce the torque demand of the air guide blade on the stepper motor.

[0066] The above step S102 may include: acquiring the control state of the stepper motor, and determining the rotation direction of the air guide blade according to the control state of the stepper motor.

[0067] The motor shaft of the stepper motor is transmission connected to the air guide blades. When the stepper motor drives the air guide blades to rotate, if the angular displacement of the stepper motor increases, the opening of the air guide blades increases, that is, the air guide blades rotate downward at this time; correspondingly, if the angular displacement of the stepper motor decreases, the opening of the air guide blades decreases, that is, the air guide blades rotate upward at this time. Therefore, the rotation direction of the air guide blades can be determined by obtaining the change in the angular displacement of the stepper motor.

[0068] The above control current value can be calculated using the following formula: I = T × Ki, where I represents the control current value; T represents the stepper motor control state, if the angular displacement of the stepper motor decreases, T is 1, if the angular displacement of the stepper motor increases, T is 0; Ki represents the required excitation intensity coefficient. According to this formula, a precise control current value can be obtained, so that the magnitude of the magnetic field suction force applied by the excitation coil on the magnetic conductor can match the actual gravity of the wind guide blade as much as possible, so that the torque applied by the magnetic field suction force on the wind guide blade can offset the torque generated by the gravity of the wind guide blade as much as possible, so as to reduce the rotational load of the wind guide blade as much as possible.

[0069] ① When the stepper motor is working in the control state T=0, the controller outputs the excitation coil control current I=0; at this time, the movement direction of the stepper motor is consistent with the gravity direction of the wind guide blade, and the stepper motor only needs to work normally and rotate itself to generate thrust;

[0070] ②When the stepper motor is working in the control state T=1, the controller outputs the excitation coil control current I=T×Ki; at this time, the movement direction of the stepper motor is opposite to the gravity direction of the wind guide blade, and the stepper motor rotates normally. At the same time, current is passed through the excitation coil to generate an electromagnetic field (the larger I is, the greater the magnetic field force is), which will generate suction on the ferromagnetic conductor and assist the wind guide blade to rotate upward.

[0071] Specifically, the required excitation intensity coefficient is set to be proportional to the weight of the air guide blade, that is, the greater the weight of the air guide blade, the greater the corresponding required excitation intensity coefficient. Therefore, the calculated control current value can be increased to increase the magnetic field force applied by the excitation coil on the magnetic conductor, so that the torque generated by the magnetic field force applied by the excitation coil on the magnetic conductor can offset the torque generated by the gravity of the air guide blade as much as possible, thereby reducing the rotational load of the air guide blade; the larger the opening of the air guide blade, the greater the torque generated by gravity, and the greater the rotational load of the air guide blade. The required excitation intensity coefficient is set to be proportional to the opening of the air guide blade, that is, the larger the opening of the air guide blade, the greater the corresponding required excitation intensity coefficient. Therefore, the calculated control current value can be increased to increase the magnetic field force applied by the excitation coil on the magnetic conductor. The magnetic field force applied to the magnetic conductor causes the torque generated by the magnetic field force applied by the excitation coil on the magnetic conductor to offset the torque generated by the gravity of the air guide blades as much as possible, thereby reducing the rotational load of the air guide blades; the smaller the torque of the stepper motor, the smaller the rotational load of the air guide blades it can bear, and the required excitation intensity coefficient is set to be inversely proportional to the torque of the stepper motor, that is, the smaller the torque of the stepper motor, the larger the corresponding required excitation intensity coefficient. Therefore, the calculated control current value can be increased to increase the magnetic field force applied by the excitation coil on the magnetic conductor, so that the torque generated by the magnetic field force applied by the excitation coil on the magnetic conductor can offset the torque generated by the gravity of the air guide blades as much as possible, thereby reducing the rotational load of the air guide blades, so that the stepper motor can smoothly drive the air guide blades to rotate.

[0072] For a stepper motor with a step angle of 1° and a maximum angular displacement of 480°, the angular displacement ranges from 0° to 480°, and the controllable and adjustable number of steps is 0 to 480 steps.

[0073] ①When Wi=0°, the air guide blades are in a closed state;

[0074] ② When Wi=0°→480° changes direction, that is, the air outlet changes from small to large, the movement direction of the stepper motor is consistent with the gravity direction of the air guide blade. At this time, the stepper motor torque demand is low, and the stepper motor control state is marked as T=0.

[0075] ③ When Wi=480°→0° changes direction, that is, the air outlet changes from large to small, the movement direction of the stepper motor is opposite to the gravity direction of the air guide blade. At this time, the stepper motor torque demand is high, and the stepper motor control state is marked as T=1.

[0076] Figure 5 A schematic flow chart of a method for controlling an air guide blade provided in one embodiment of the present invention, the method comprising:

[0077] S301, start;

[0078] S302, damper initialization (excitation coil is energized, stepper motor is reset);

[0079] S303, determining whether the control instruction is to control the air guide blades to open;

[0080] S304, if not, return to step S303; if yes, determine whether the stepper motor control state T = 1:

[0081] S305, if T=1, determine the control current value of the excitation coil according to the required excitation intensity coefficient;

[0082] S306, controlling the stepper motor to operate so as to drive the air guide blades to close;

[0083] S307, if T=0, determine that the control current value of the excitation coil is 0;

[0084] S308, controlling the stepper motor to operate so as to drive the air guide blades to open;

[0085] S309, execute loop control.

[0086] Figure 6 A schematic structural diagram of a wind guide blade control device provided in one embodiment of the present invention, the device comprising:

[0087] An acquisition module 401 is used to acquire the rotation state of the wind guide blade;

[0088] A determination module 402, used to determine a control current value according to a rotation state of the wind guide blade;

[0089] The control module 403 is used to control the energization of the excitation coil according to the control current value.

[0090] The air guide blade control device provided in this embodiment has a control module 403 which can automatically control the excitation coil to be energized when the rotational load of the air guide blade is increased due to the influence of gravity, and can automatically control the excitation coil to be de-energized when the rotational load of the air guide blade is not affected by gravity. Thus, the load-reducing effect of the excitation mechanism can be brought into play in a timely manner to reduce the load of the stepper motor and the torque demand of the air guide blade on the stepper motor.

[0091] The determination module 402 can determine that the control current value is zero when the air guide blade rotates downward, and determine that the control current value is a positive value when the air guide blade rotates upward.

[0092] The acquisition module 401 includes an acquisition unit and a determination unit. The acquisition unit can acquire the control state of the stepper motor; the determination unit can determine the rotation direction of the air guide blade according to the control state of the stepper motor.

[0093] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the control device through a computer, and the program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments, wherein the storage medium may be a memory, a disk, an optical disk, etc.

[0094] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0095] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0096] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An air conditioner, characterized in that: It includes an air conditioner body, air guide blades and an excitation mechanism; The rotation axis of the air guide blade forms an angle with the vertical direction, the excitation mechanism comprises an excitation coil and a magnetic conductor, the excitation coil and the magnetic conductor are respectively fixed to the upper side of the air outlet of the air conditioner body and the air guide blade, and the excitation coil can generate a magnetic field force toward the excitation coil on the magnetic conductor after being energized; The magnetic conductor is close to the outer edge of the air guide blade in the open state, the excitation coil is fixed to the inner side of the air conditioner body close to the air outlet, and the magnetic conductor is fixed to the inner side of the air guide blade.

2. A method for controlling an air guide blade, characterized in that: Applied to the air conditioner according to claim 1, the method comprises: S202, obtaining the rotation state of the air guide blade; S204, determining a control current value according to the rotation state of the air guide blade; S206, controlling the excitation coil to be energized according to the control current value; Step S202 includes: acquiring a control state of a stepper motor, the stepper motor being used to drive the air guide blade to rotate; and determining a rotation direction of the air guide blade according to the control state of the stepper motor; Step S204 includes: if the air guide blade rotates downward, determining that the control current value is zero; if the air guide blade rotates upward, determining that the control current value is a positive value.

3. The air guide blade control method according to claim 2, characterized in that: If the angular displacement of the stepper motor decreases, the air guide blades rotate upward and the opening of the air guide blades decreases; if the angular displacement of the stepper motor increases, the air guide blades rotate downward and the opening of the air guide blades increases.

4. The air guide blade control method according to claim 3, characterized in that: The calculation formula of the control current value is: I = T × Ki, Wherein, I represents the control current value; T represents the control state of the stepper motor, if the angular displacement of the stepper motor decreases, T is 1, if the angular displacement of the stepper motor increases, T is 0; Ki represents the required excitation intensity coefficient.

5. The air guide blade control method according to claim 4, characterized in that: The required excitation intensity coefficient is proportional to the weight of the air guide blade, proportional to the opening of the air guide blade, and inversely proportional to the torque of the stepper motor.

6. A wind guide blade control device, characterized in that: The wind guide blade control method according to any one of claims 2 to 5, wherein the device comprises: An acquisition module, used to acquire the rotation state of the wind guide blade; A determination module, used to determine a control current value according to a rotation state of the wind guide blade; A control module is used to control the energization of the excitation coil according to the control current value.

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