Automobile blower motor with buffer noise reduction structure

Abstract

The invention relates to the technical field of blower motors, and provides an automobile blower motor with a buffer noise reduction structure, and the automobile blower motor with the buffer noise reduction structure comprises a housing which is provided with an air channel accommodation space; the air flow conveying part is located in the air channel containing space and rotatably arranged on the shell, and the air flow conveying part comprises a rotary containing part, a plurality of air supply mechanisms and an angle adjusting mechanism; and the driving part is arranged on the side, away from the air inlet hole, of the shell, and the driving part comprises a driving piece and a plurality of magnetic current rings. According to the automobile blower motor provided with the buffer noise reduction structure, the technical problem that in the prior art, the frequency of noise generated by an automobile blower in the operation process is possibly consistent with or close to the frequency of noise generated by cooling fans of other electronic parts in an automobile, so that resonance is caused, and noise energy is amplified can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of blower motors, and in particular to an automobile blower motor provided with a buffering and noise reduction structure. Background Art

[0002] The car blower is the core component of the car air conditioning system, which is used to force air flow to achieve temperature regulation, air circulation and environmental optimization in the car.

[0003] However, the frequency of the noise generated by the impeller and blades of the car blower during operation may be consistent or close to the frequency of the noise generated by the cooling fans of other electronic components in the car (engine cooling fan, air conditioning condenser fan, etc.), thus causing resonance and amplifying the noise energy. Summary of the invention

[0004] An embodiment of the present application provides an automobile blower motor with a buffering noise reduction structure, which can improve the technical problem in the related art that the frequency of the noise generated by the automobile blower during operation may be consistent with or close to the frequency of the noise generated by the cooling fan of other electronic components in the automobile, thereby causing resonance and resulting in amplification of the noise energy.

[0005] In a first aspect, an embodiment of the present application provides an automobile blower motor with a buffer noise reduction structure, comprising: A shell, wherein the shell has an airway accommodating space, and the shell is provided with an air inlet hole and an air delivery hole connected to the airway accommodating space; An airflow conveying part is located in the airway accommodating space and is rotatably arranged on the shell, the airflow conveying part comprises a rotating accommodating member, a plurality of air supply mechanisms and an angle adjustment mechanism, the rotating accommodating member is located in the airway accommodating space on a side away from the air inlet hole and is rotatably arranged on the shell, the rotating accommodating member has a rotating accommodating space, and a plurality of rotating holes connected to the rotating accommodating space are opened on the rotating accommodating member; the air supply mechanism is partially located in the airway accommodating space and partially located in the rotating accommodating space through the rotating holes, the air supply mechanism is rotatably arranged on the rotating accommodating member, and the air supply mechanism is used to promote air flow; the angle adjustment mechanism is partially located in the rotating accommodating space and is arranged on the rotating accommodating member, the angle adjustment mechanism is respectively connected to the parts of each of the air supply mechanisms located in the rotating accommodating space, and the angle adjustment mechanism is used to drive each of the air supply mechanisms to rotate around the central axis of the rotating hole to change the inclination angle of the air supply mechanism; and The driving part is arranged on a side of the outer shell away from the air inlet, and the driving part includes a driving member and a plurality of magnetic flow rings. The driving member is arranged on the outer shell and connected to the rotating container, and the driving member is used to drive the rotating container to rotate so as to drive the air supply mechanism to rotate around the output shaft of the driving member, thereby pushing the air to be output from the air supply hole; the magnetic flow ring is arranged on the driving member and surrounds the driving member, and the magnetic flow ring is used to adjust its own stiffness.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects: The automobile blower motor provided with a buffering and noise reduction structure provided in the embodiment of the present application is fixed to the automobile through the housing and guides the air flow. The rotating container provides a basic structure for installation and support for the air supply mechanism and the angle adjustment mechanism and drives the air supply mechanism and the angle adjustment mechanism to rotate. The air supply mechanism continuously applies force to the air during the rotation process, so that the air enters the airway accommodation space from the air inlet and is finally output from the air delivery hole to realize the delivery of airflow. The angle adjustment mechanism simultaneously changes the inclination angle of each air supply mechanism to realize multi-angle air supply, meet different airflow delivery requirements and change the rotation frequency and blade passing frequency, avoid the rotation frequency and blade passing frequency being consistent or close to the noise frequency generated by the cooling fan of other electronic components in the car, thereby causing resonance and leading to the technical problem of noise energy being amplified. The driving member provides power to drive the rotating container to rotate, and each magnetic flow ring adjusts its own stiffness according to the road conditions of the car, which plays a buffering role on the driving member and reduces vibration transmission.

[0007] In a second aspect, an embodiment of the present application provides a blower motor control method, which is applied to the automobile blower motor with a buffer noise reduction structure as described in any of the above items, and the method comprises: Acquire comprehensive information; wherein the comprehensive information includes multiple noise information and road condition information, the noise information reflects the frequency of noise generated by the cooling fan of the electronic components in the car when running, and the road condition information reflects the bump frequency of the car when passing through a bumpy road; Based on the comprehensive information, adjustment range information is obtained; wherein the adjustment range information includes target noise information and target stiffness information, the target noise information includes a plurality of frequency ranges reflecting the noise generated by the airflow conveying part, and the target stiffness information reflects the stiffness of the magnetic flow ring; A control scheme is obtained based on the adjustment range information; wherein the control scheme includes air blowing adjustment information for indicating the angle adjustment mechanism and the driving member and motor adjustment information for indicating the magnetic flux ring.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects: By obtaining comprehensive information including multiple noise information and road condition information, it is ensured that the system can perceive the external environment (road condition) and internal state (noise) in real time, providing a basis for subsequent steps. Then, by obtaining adjustment range information including target noise information and target stiffness information based on the comprehensive information, the frequency of the noise that can be generated and the stiffness that the magnetic flux ring needs to achieve are determined, so as to stagger the frequency of the noise generated by the cooling fan of other electronic components in the car during operation, and to increase the stability of the driving part when the car passes through a bumpy road section, thereby reducing vibration transmission. Finally, based on the adjustment range information, a control scheme including blast adjustment information and motor adjustment information is obtained, and the inclination angle of the air supply mechanism and the speed of the driving part are adjusted, so as to adjust the noise frequency and optimize the noise distribution, avoid the rotation frequency and blade passing frequency being consistent or close to the noise frequency generated by the cooling fan of other electronic components in the car, thereby causing resonance, resulting in the technical problem of noise energy being amplified, and adjusting the magnetic field strength of the magnetic flux ring to change the stiffness of the magnetic flux ring, thereby reducing vibration transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0010] Figure 1 A schematic diagram of the structure of an automobile blower motor provided with a buffer noise reduction structure according to an embodiment of the present application; Figure 2 for Figure 1 A schematic cross-sectional view of an automobile blower motor having a buffer and noise reduction structure; Figure 3 A schematic diagram of the structure of the air flow conveying unit provided in an embodiment of the present application; Figure 4 A schematic flow chart of a blower motor control method provided in an embodiment of the present application; Figure 5 A schematic flow chart of step S200 in the blower motor control method provided in an embodiment of the present application; Figure 6 A schematic flow chart of step S300 in the blower motor control method provided in an embodiment of the present application.

[0011] Among them, the reference numerals in the figure are: 100. Automobile blower motor with buffer noise reduction structure; 10. Casing; 11. Airway accommodating space; 12. Air inlet; 13. Air delivery hole; 20. Air flow conveying part; 21. Rotating accommodating member; 211. Rotating accommodating space; 22. Air delivery mechanism; 221. Support member; 222. Blade; 223. Mounting member; 23. Angle adjustment mechanism; 231. Adjusting driving member; 232. Driving disk; 233. Connecting member; 30. Driving part; 31. Driving member; 32. Magnetic flow ring; 33. Driving accommodating member. DETAILED DESCRIPTION

[0012] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0014] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0015] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0017] In this application, "and / or" 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.

[0018] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0019] In the electrical control circuit of the elevator, multiple parts and components require contacts to realize the switching, signal transmission and control functions of the circuit, such as push button switches, relays, door lock circuit switches, etc. These switches are prone to wear and tear after multiple collisions and frictions during long-term operation of the elevator, which can lead to problems such as poor contact of contacts, unstable signal transmission or circuit failure. Therefore, it is necessary to test the durability of the elevator switch to ensure elevator safety.

[0020] Based on this, in order to improve the technical problem in the related art that the elevator switch contacts are worn due to collision and friction, which endangers the safety of the elevator, the embodiment of the present application provides the following solution.

[0021] See also Figure 1 and Figure 2 The embodiment of the present application provides an automobile blower motor 100 with a buffer noise reduction structure. The automobile blower motor 100 with a buffer noise reduction structure includes a housing 10, an airflow conveying part 20 and a driving part 30, wherein: The housing 10 has an air passage accommodating space 11 , and an air inlet 12 and an air delivery hole 13 communicating with the air passage accommodating space 11 are formed on the housing 10 .

[0022] The airflow conveying part 20 is located in the airway accommodating space 11 and is rotatably arranged on the housing 10. The airflow conveying part 20 includes a rotating accommodating member 21, a plurality of air supply mechanisms 22 and an angle adjustment mechanism 23. The rotating accommodating member 21 is located in the airway accommodating space 11 on a side away from the air inlet hole 12 and is rotatably arranged on the housing 10. The rotating accommodating member 21 has a rotating accommodating space 211. The rotating accommodating member 21 is provided with a plurality of rotating holes connected to the rotating accommodating space 211. The air supply mechanism 22 is partially located in the airway accommodating space 11. The air supply mechanism 22 is rotatably arranged on the rotating container 21 through the rotating hole, and is used to promote the air flow; the angle adjustment mechanism 23 is partially located in the rotating container 211 and is arranged on the rotating container 21. The angle adjustment mechanism 23 is respectively connected to the parts of each air supply mechanism 22 located in the rotating container 211, and the angle adjustment mechanism 23 is used to drive each air supply mechanism 22 to rotate around the center axis of the rotating hole to change the inclination angle of the air supply mechanism 22.

[0023] The driving part 30 is arranged on a side of the outer shell 10 away from the air inlet 12. The driving part 30 includes a driving member 31 and a plurality of magnetic flow rings 32. The driving member 31 is arranged on the outer shell 10 and connected to the rotating container 21. The driving member 31 is used to drive the rotating container 21 to rotate so as to drive the air supply mechanism 22 to rotate around the output axis of the driving member 31, thereby pushing the air to be output from the air supply hole 13; the magnetic flow ring 32 is arranged on the driving member 31 and surrounds the driving member 31. The magnetic flow ring 32 is used to adjust its own stiffness.

[0024] It can be understood that the housing 10 is a shell that can provide an installation base and a support frame. For example, the housing 10 can be an aluminum shell, a plastic shell, etc., but is not limited thereto. The airflow conveying part 20 is a device that can promote air flow. For example, the airflow conveying part 20 can be a backward curved impeller, a radial impeller, etc., but is not limited thereto. The rotating container 21 is a structure that can provide an installation base. For example, the material of the rotating container 21 can be aluminum, plastic, etc., but is not limited thereto. The air supply mechanism 22 is a device that can promote air flow. Each air supply mechanism 22 can be evenly arranged along the circumferential direction of the rotating container 21. For example, the air supply mechanism 22 can be a straight blade, an arc blade, etc., but is not limited thereto. The angle adjustment mechanism 23 is a device that can drive the air supply mechanism 22 to rotate to change the inclination angle of the air supply mechanism 22. For example, the angle adjustment mechanism 23 can be a servo motor, a stepping motor, etc., but is not limited thereto. The driving part 30 is a driving device capable of driving the rotating container 21 to rotate. For example, the driving part 30 may include a driving motor (servo motor, stepper motor, etc.) and an elastic member (spring, rubber pad, etc.), but not limited thereto. The driving motor may be arranged on the rotating container 21, and the elastic member may be arranged on the driving motor and connected to other parts of the automobile. The driving member 31 is a driving device capable of driving the rotating container 21 to rotate. For example, the driving member 31 may be a servo motor, stepper motor, etc., but not limited thereto. The magnetic flow ring 32 is a device capable of changing its own stiffness according to the magnetic field strength. For example, the magnetic flow ring 32 may include a fluid container (which may be annular, tile-shaped, etc.), a magnetorheological fluid (iron-based magnetorheological fluid, ferrite magnetorheological fluid, etc.) and a magnetic field generating device (electromagnetic coil, permanent magnet, etc.), but not limited thereto. The fluid container may have an annular containing space and be arranged around the driving member 31. The magnetorheological fluid may be arranged in the annular containing space in a fluid manner, and the magnetic field generating device may be arranged on the fluid container.

[0025] As can be seen from the above, the automobile blower motor 100 provided with a buffering and noise reduction structure provided in the embodiment of the present application is fixed to the automobile through the housing 10 and guides the air flow. The rotating container 21 provides a basic structure for installation and support for the air supply mechanism 22 and the angle adjustment mechanism 23 and drives the air supply mechanism 22 and the angle adjustment mechanism 23 to rotate. The air supply mechanism 22 continuously applies force to the air during the rotation process, so that the air enters the airway accommodation space 11 from the air inlet 12 and is finally output from the air delivery hole 13 to achieve air flow delivery. The angle adjustment mechanism 23 simultaneously changes the inclination angle of each air supply mechanism 22 to achieve multi-angle air supply, meet different air flow delivery requirements and change the rotation frequency and blade passing frequency, avoid the rotation frequency and blade passing frequency being consistent or close to the noise frequency generated by the cooling fan of other electronic components in the automobile, thereby causing resonance, resulting in the technical problem of noise energy being amplified. The driving member 31 provides power to drive the rotating container 21 to rotate, and each magnetic flow ring 32 adjusts its own stiffness according to the road conditions of the car, which plays a buffering role on the driving member 31 and reduces vibration transmission.

[0026] In some embodiments, please refer to Figure 2 and Figure 3 The air supply mechanism 22 includes a support member 221 , blades 222 and a mounting member 223 .

[0027] The support member 221 is partially located in the airway accommodating space 11 and partially located in the rotating accommodating space 211 through the rotating hole. The support member 221 is rotatably arranged on the rotating accommodating member 21. The blade 222 is located in the airway accommodating space 11 and is arranged on the support member 221. The blade 222 is used to promote air flow. The mounting member 223 is located in the rotating accommodating space 211 and is arranged on the support member 221.

[0028] Among them, the angle adjustment mechanism 23 is connected to each mounting member 223 respectively, and the angle adjustment mechanism 23 is used to drive the mounting member 223 to rotate to drive the support member 221 to rotate and then drive the blade 222 to rotate around the center axis of the rotating hole to change the inclination angle of the blade 222. The inclination angle is the angle between the outlet tangent of the blade 222 and the radial direction.

[0029] It can be understood that the support member 221 is a rod-shaped structure that can play a supporting role. Both ends of the support member 221 are rotatably connected to the rotating container 21. The support members 221 can be evenly arranged along the circumferential direction of the rotating container 21. For example, the support member 221 can be a carbon steel rod, an aluminum alloy rod, etc., but not limited to this. The blade 222 is a component that can promote the flow of air. For example, the blade 222 can be a straight blade, an arc blade, etc., but not limited to this. The mounting member 223 is a transmission structure that can drive the support member 221 to rotate. For example, the mounting member 223 can be a carbon steel rod, an aluminum alloy rod, etc., but not limited to this.

[0030] With such arrangement, when air supply is required, the driving member 31 drives the rotating container 21 to rotate with the driving shaft of the driving member 31 as the rotation axis, thereby driving the support member 221 to rotate and then driving the blade 222 to rotate, so that the blade 222 pushes the air flow to achieve air supply. When the inclination angle of the blade 222 needs to be adjusted, the angle adjustment mechanism 23 drives the mounting member 223 to rotate with the center axis of the rotating hole, and the mounting member 223 drives the supporting member 221 to rotate and then drives the blade 222 to rotate with the center axis of the rotating hole, thereby changing the inclination angle of the blade 222.

[0031] In some embodiments, please refer to Figure 2 and Figure 3 The angle adjustment mechanism 23 includes an adjustment driving member 231 , a driving disk 232 and a plurality of connecting members 233 .

[0032] The adjusting driving member 231 is located in the airway accommodating space 11 and is disposed on the rotating accommodating member 21 .

[0033] The driving disk 232 is located in the rotation accommodation space 211 and is rotatably disposed on the rotation accommodation member 21 .

[0034] A plurality of connecting members 233 are located in the rotation accommodating space 211 and are rotatably disposed on the driving disk 232 . Each connecting member 233 is respectively connected to each mounting member 223 . One end of the connecting member 233 away from the driving disk 232 is rotatably connected to the mounting member 223 .

[0035] The rotating shaft of the adjusting driving member 231 is connected to the driving disk 232 , and the adjusting driving member 231 is used to drive the driving disk 232 to rotate so as to drive each connecting member 233 to move, thereby driving the mounting member 223 to rotate around the central axis of the rotating hole.

[0036] It can be understood that the adjustment drive member 231 is a driving device that can drive the driving disk 232 to rotate, and can be set at the center of the rotating container 21. For example, the adjustment drive member 231 can be a stepping motor, a servo motor, etc., but not limited to this. The driving disk 232 is a disk-shaped structure, and the driving disk 232 can be connected to the rotating shaft of the adjustment drive member 231. For example, the driving disk 232 can be an aluminum disk, a plastic disk, etc., but not limited to this. The connecting member 233 is a rod-shaped structure, and both ends of the connecting member 233 are respectively rotatably connected to the driving disk 232 and the mounting member 223. For example, the connecting member 233 can be an aluminum rod, a plastic rod, etc., but not limited to this.

[0037] With such arrangement, when it is necessary to increase the inclination angle of the blade 222, the drive member 231 is adjusted to drive the driving disk 232 to rotate counterclockwise to drive one end of each connecting member 233 that is rotatably connected to the driving disk 232 to rotate counterclockwise, and make one end of the connecting member 233 that is rotatably connected to the mounting member 223 close to the driving disk 232, thereby driving the mounting member 223 to rotate clockwise, thereby increasing the inclination angle of the blade 222; when it is necessary to reduce the inclination angle of the blade 222, the drive member 231 is adjusted to drive the driving disk 232 to rotate clockwise to drive one end of each connecting member 233 that is rotatably connected to the driving disk 232 to rotate clockwise, and make one end of the connecting member 233 that is rotatably connected to the mounting member 223 away from the driving disk 232, thereby driving the mounting member 223 to rotate counterclockwise, thereby reducing the inclination angle of the blade 222.

[0038] In some embodiments, see Figure 2 The driving portion 30 further includes a driving accommodation member 33 .

[0039] The drive accommodating member 33 is arranged on a side of the outer shell 10 away from the air inlet 12. The drive accommodating member 33 has a drive accommodating space. The drive member 31 is located in the drive accommodating space and is arranged on the drive accommodating member 33. Each magnetic flow ring 32 is located in the drive accommodating space and between the drive accommodating member 33 and the drive member 31.

[0040] It can be understood that the driving container 33 is a barrel-shaped structure. For example, the driving container 33 can be an aluminum barrel, a plastic barrel, etc., but is not limited thereto.

[0041] In this way, the driving container 33 is used to isolate the driving member 31 and each magnetic flow ring 32 from the external environment to prevent them from being damaged by external factors (such as dust, water vapor, collision, etc.), thereby extending their service life and ensuring that their performance is not disturbed by the outside world. The activity range of the magnetic flow ring 32 is limited, so that the stiffness of the magnetic flow ring 32 can be adjusted within a specific space, thereby better cooperating with the driving member 31 to play a role in buffering and shock absorption.

[0042] See also Figure 4The embodiment of the present application further provides a blower motor control method, which is applied to the automobile blower motor 100 with a buffer noise reduction structure as described in any of the above embodiments. The blower motor control method includes: Obtain comprehensive information; wherein the comprehensive information includes multiple noise information and road condition information, the noise information reflects the frequency of noise generated by the cooling fan of the electronic components in the car when running, and the road condition information reflects the bumpy frequency of the car when passing through a bumpy road.

[0043] The adjustment range information is obtained based on the comprehensive information; wherein the adjustment range information includes target noise information and target stiffness information, the target noise information includes multiple frequency ranges reflecting the noise generated by the airflow conveying part 20, and the target stiffness information reflects the stiffness of the magnetic flow ring 32.

[0044] A control scheme is obtained based on the adjustment range information; wherein the control scheme includes air blowing adjustment information for indicating the angle adjustment mechanism 23 and the driving member 31 and motor adjustment information for indicating the magnetic flux ring 32 .

[0045] As can be seen from the above, the blower motor control method provided in the embodiment of the present application, by obtaining comprehensive information including multiple noise information and road condition information, ensures that the system can perceive the external environment (road condition) and internal state (noise) in real time, and provides a basis for subsequent steps. Then, by obtaining the adjustment range information including the target noise information and the target stiffness information based on the comprehensive information, the frequency of the noise that can be generated and the stiffness that the magnetic flux ring 32 needs to achieve are determined, so as to stagger the frequency of the noise generated by the cooling fan of other electronic components in the car during operation, and to increase the stability of the driving member 31 when the car passes through a bumpy road section, thereby reducing vibration transmission. Finally, based on the adjustment range information, a control scheme including the blast adjustment information and the motor adjustment information is obtained, and the inclination angle of the air supply mechanism 22 and the rotation speed of the driving member 31 are adjusted, so as to adjust the noise frequency and optimize the noise distribution, avoid the rotation frequency and the blade passing frequency being consistent or close to the noise frequency generated by the cooling fan of other electronic components in the car, thereby causing resonance, and causing the technical problem that the noise energy is amplified, and the magnetic field strength of the magnetic flux ring 32 is adjusted to change the stiffness of the magnetic flux ring 32, thereby reducing vibration transmission.

[0046] In order to better understand the blower motor control method provided in the embodiment of the present application, the specific implementation process of the blower motor control method provided in the embodiment of the present application is exemplarily introduced below.

[0047] Figure 4 A schematic flow chart of a blower motor control method provided in an embodiment of the present application is shown, and the blower motor control method includes: S100, obtaining comprehensive information; wherein the comprehensive information includes multiple noise information and road condition information, the noise information reflects the frequency of noise generated by the cooling fan of the electronic components in the car when running, and the road condition information reflects the bump frequency when the car passes through a bumpy road.

[0048] It can be understood that the way to obtain noise information can be to collect noise signals through a microphone, extract frequency components through fast Fourier transform (FFT), or obtain fan speed and number of blades, multiply fan speed by number of blades and divide by 60, etc., but not limited to this. The way to obtain comprehensive information can be to collect vehicle vibration signals through an acceleration sensor, extract frequency components through Fourier transform (FFT), or estimate typical frequency bands by combining vehicle speed and road surface spectrum (power spectrum density of road surface roughness), etc., but not limited to this. Obtaining comprehensive information can provide a basis for subsequent steps.

[0049] S200, obtaining adjustment range information based on the comprehensive information; wherein the adjustment range information includes target noise information and target stiffness information, the target noise information includes multiple frequency ranges reflecting the noise generated by the airflow conveying part 20, and the target stiffness information reflects the stiffness of the magnetic flow ring 32.

[0050] It can be understood that the adjustment range information can be obtained based on the comprehensive information by obtaining the target noise information based on the individual noise information and the target stiffness information based on the road condition information, and then confirming the target noise information and the target stiffness information as the adjustment range information, or by sending the comprehensive information to the user and then receiving the data transmitted by the user, etc., but it is not limited thereto. The adjustment range information obtained based on the comprehensive information can determine the optimal frequency of the noise generated and the stiffness that the magnetic flux ring 32 needs to achieve, so as to stagger the frequency of the noise generated by the cooling fan of other electronic components in the car during operation, and improve the stability of the driving member 31 when the car passes through a bumpy road section, reduce vibration transmission, and provide a basis for subsequent steps.

[0051] In one possible implementation, see Figure 5 , S200, obtaining adjustment range information based on the comprehensive information, including: S210: Obtain target noise information based on various noise information.

[0052] It is understood that the target noise information can be obtained based on each noise information by confirming the frequency reflected by each noise information within a range of 10% above and below as the target noise information, or by sending each noise information to the user and then receiving the data transmitted by the user, etc., but is not limited thereto. Obtaining the target noise information based on each noise information can ensure that the noise frequency reflected by the target noise information will not be superimposed with the noise frequency generated by other fans to form a resonance, resulting in the noise energy being amplified, and provide a basis for subsequent steps.

[0053] In one possible implementation, see Figure 5 , S210, obtaining target noise information based on each noise information, including: S211, after multiplying the noise frequency reflected by each piece of noise information by a first preset value to obtain a plurality of first values, multiplying the noise frequency reflected by each piece of noise information by a second preset value to obtain a plurality of second values.

[0054] It is understood that the first preset value may be 0.8, 0.9, etc., but not limited thereto. The second preset value may be 1.1, 1.2, etc., but not limited thereto. Obtaining multiple first values ​​and multiple second values ​​based on each noise information can provide a basis for subsequent steps.

[0055] Exemplarily, assuming that the noise frequency reflected by the noise information is 100 Hz, the first preset value is 0.9, and the second preset value is 1.1, then the first value=100*0.9=90 Hz, and the second value=100*1.1=110 Hz.

[0056] S212: Confirm a numerical interval between the first value and the second value corresponding to each piece of noise information as an avoidance interval.

[0057] It can be understood that confirming the numerical interval between the first value and the second value corresponding to each noise information as the avoidance interval can transform the single-point frequency risk into interval safety redundancy, simplify multi-condition adaptation, dynamically avoid resonance risk, and provide a basis for subsequent steps.

[0058] Exemplarily, assuming that the first value is 90 Hz and the second value is 110 Hz, the avoidance interval is (90 Hz, 110 Hz).

[0059] S213, obtaining noise range information; wherein the noise range information is the frequency range of the noise that can be generated by the airflow conveying unit 20.

[0060] It is understood that the noise range information can be obtained by obtaining the noise frequency generated by the airflow conveying part 20 under various extreme working conditions in advance through an acoustic sensor array, or can be obtained by theoretical calculation based on the rotation speed of the rotating container 21 in the airflow conveying part 20 and the inclination angle of the blade 222, etc., but is not limited thereto. Obtaining the noise range information can provide a basis for subsequent steps.

[0061] S214 , after confirming the continuous numerical range intervals that do not touch the numerical range intervals reflected by any avoidance interval in the numerical range intervals reflected by the noise range information as the target range, the entire target range is confirmed as the target noise information.

[0062] It can be understood that confirming the entire target range as the target noise information can clearly identify the frequency range that will not resonate with the noise frequencies of other fans, dynamically avoid the risk of resonance, and provide a basis for subsequent steps.

[0063] Exemplarily, assuming that the numerical range interval reflected by the noise range information is (1 Hz, 1000 Hz), there are two avoidance intervals, and the numerical range intervals reflected by the two avoidance intervals are (90 Hz, 110 Hz) and (180 Hz, 220 Hz), respectively. Then the target range includes (1 Hz, 89 Hz), (111 Hz, 179 Hz) and (221 Hz, 1000 Hz).

[0064] S220, obtaining target stiffness information based on the road condition information.

[0065] It can be understood that the target stiffness information can be obtained based on the road condition information by calculating the dominant frequency to be avoided based on the bump frequency reflected by the road condition information and the rotation speed of the driving member 31, and then calculating the stiffness that the magnetic fluid needs to achieve based on the dominant frequency, or by sending the road condition information to the user and then receiving the data transmitted by the user, etc., but it is not limited thereto. Obtaining the target stiffness information based on the road condition information can clarify the frequency that needs to be avoided, providing a basis for subsequent steps.

[0066] In one possible implementation, see Figure 5 , S220, obtaining target stiffness information based on the road condition information, including: S221, obtaining total stiffness; wherein the total stiffness is the sum of the structural stiffness and the magnetic fluid stiffness.

[0067] It can be understood that structural stiffness refers to the ability of the driver 31 to resist deformation (especially bending, torsion or vibration). The method for obtaining structural stiffness can be to receive data transmitted by the user, or to retrieve the corresponding structural stiffness in a preset database using the specific model of the driver 31 as an index, but is not limited to this. Magnetic fluid stiffness refers to the ability of a magnetorheological fluid to resist shear deformation or flow under the action of a magnetic field. The method for obtaining magnetic fluid stiffness can be to receive data transmitted by the user, or to retrieve the corresponding magnetic fluid stiffness in a preset database using the specific model of the magnetic flow ring 32 as an index, but is not limited to this. Obtaining the total stiffness of the sum of the structural stiffness and the magnetic fluid stiffness can provide a basis for subsequent steps.

[0068] For example, assuming that the structural stiffness is 1000 N / m and the magnetic fluid stiffness is 200 N / m, the total stiffness=1000+200=1200 N / m.

[0069] S222 , taking the square root of the value obtained by dividing the total stiffness by the system mass, and confirming the value obtained as the natural frequency; wherein the system mass is the mass of the driving member 31 .

[0070] It can be understood that the system mass is the equivalent mass of the driving member 31. The system mass can be obtained by receiving data transmitted by the user, or by searching the preset database with the specific model of the driving member 31 as an index to obtain the corresponding system mass, etc., but it is not limited thereto. The natural frequency obtained by dividing the total stiffness by the system mass can provide a basis for subsequent steps.

[0071] For example, assuming the total stiffness is 1200 N / m and the system mass is 10 kg, the natural frequency = ≈10.95rad / s ≈1.74Hz.

[0072] S223, the absolute value obtained by subtracting the turbulence frequency from the natural frequency is determined as the frequency margin.

[0073] It can be understood that confirming the absolute value obtained by subtracting the bump frequency from the natural frequency as the frequency margin can provide a basis for subsequent steps.

[0074] For example, assuming that the natural frequency is 1.95 Hz and the bump frequency is 5 Hz, the frequency margin=|1.95-5|=3.05 Hz.

[0075] S224, a value obtained by multiplying the system mass by the square of the sum of the bump frequency plus the frequency margin and then subtracting the structural stiffness is confirmed as the target stiffness information.

[0076] It can be understood that confirming the value obtained by multiplying the system mass by the square of the sum of the bump frequency plus the frequency margin and then subtracting the structural stiffness as the target stiffness information can provide a basis for subsequent steps.

[0077] For example, assuming that the system mass is 50 kg, the bump frequency is 5 Hz, the frequency margin is 2 Hz, and the structural stiffness is 1500 N / m, the target stiffness information = 50*(5+2)²-1500=950 N / m.

[0078] S230: confirm the target noise information and the target stiffness information as adjustment range information.

[0079] It can be understood that confirming the target noise information and the target stiffness information as the adjustment range information can provide a basis for subsequent steps.

[0080] S300 , obtaining a control scheme based on the adjustment range information; wherein the control scheme includes air blowing adjustment information for indicating the angle adjustment mechanism 23 and the driving member 31 and motor adjustment information for indicating the magnetic flux ring 32 .

[0081] It is understandable that the control scheme based on the adjustment range information may be obtained by sending the adjustment range information to the user and then receiving the data transmitted by the user, or may be obtained based on the adjustment range information to control the rotation speed of the driving member 31 and the control angle adjustment mechanism 23 to adjust the inclination angle of the blade 222, and obtain instructions for controlling the magnetic field strength of the magnetic flux ring 32 based on the target stiffness information, etc., but is not limited thereto. The control scheme is obtained based on the adjustment range information to improve the technical problem that the frequency of the noise generated by the blower during operation may be consistent with or close to the frequency of the noise generated by the cooling fan of other electronic components in the car, thereby causing resonance and resulting in the amplification of the noise energy.

[0082] In one possible implementation, see Figure 6 , S300, obtaining a control scheme based on the adjustment range information, including: S310, obtaining air blowing adjustment information based on the adjustment range information.

[0083] It can be understood that the method of obtaining the air blowing adjustment information based on the adjustment range information may be to send the adjustment range information to the user and then receive the data transmitted by the user, or to obtain the ideal rotation speed of the driving member 31 and the ideal inclination angle of the blade 222 based on the air blowing adjustment information, but is not limited thereto. Obtaining the air blowing adjustment information based on the adjustment range information can avoid the generation of resonance, thereby causing the problem of noise energy being amplified.

[0084] In one possible implementation, see Figure 6 S310, obtaining air blowing adjustment information based on the adjustment range information, including: S311, obtain air volume information and rotation speed information; wherein the air volume information reflects the air volume of the airflow conveying unit 20, and the rotation speed information reflects the rotation speed range that the driving member 31 can adjust in order from small to large.

[0085] It can be understood that the air volume information is the air volume that the blower needs to achieve under the current in-vehicle environment. The way to obtain the air volume information can be to receive data transmitted by the user, or to receive the air volume data transmitted by the intelligent vehicle control system after calculation based on the in-vehicle ambient temperature, etc., but it is not limited to this. The way to obtain the speed information can be to receive data transmitted by the user, or to retrieve the corresponding speed information in a preset database with the specific model of the driving member 31 as an index, etc., but it is not limited to this. Obtaining the air volume information and the speed information can provide a basis for subsequent steps.

[0086] S312, step a, after confirming the nth numerical value in the speed range reflected by the speed information as the preselected value, divide the preselected value by 60 to obtain the rotation frequency, and then multiply the rotation frequency by the number of blades to obtain the blade passing frequency; wherein, the initial value of n is 1, and the number of blades is the number of air supply mechanisms 22.

[0087] It can be understood that the method for obtaining the number of blades can be to receive data transmitted by the user, or to retrieve the corresponding number of blades in a preset database using the specific model of the driving member 31 as an index, but is not limited thereto. When n=1, the corresponding value is less than any other value in the speed range. The rotation frequency and the blade passing frequency obtained by calculation can provide a basis for subsequent steps.

[0088] Exemplarily, assuming that the preselected value is 800 rpm and the number of blades is 6, the rotation frequency = 800 / 60≈13.333 Hz, and the blade passing frequency = 13.333*6 = 80 Hz.

[0089] S313, step b, determine whether the rotation frequency and the blade passing frequency are both within any frequency range in the target noise information; if the rotation frequency or the blade passing frequency is not within any frequency range in the target noise information, substitute the value obtained by adding 1 to n into n in step a and repeat steps a and b; if the rotation frequency and the blade passing frequency are both within any frequency range in the target noise information, substitute the preselected value into the analysis formula to obtain the inclination angle.

[0090] It can be understood that the analytical formula can be Q= , but not limited to this, wherein Q is the air volume reflected by the air volume information, D is the diameter of the rotating container 21, b is the blade outlet width, n is a preselected value, and β is the inclination angle. If the rotation frequency or the blade passing frequency is not within any frequency range in the target noise information, it means that the noise frequency generated may be superimposed with other noise frequencies to form a resonance, then the value obtained by adding 1 to n is substituted into n in step a, and then steps a and b are repeated to determine whether another rotation speed of the driving member 31 can avoid the noise frequency generated by other fans. If the rotation frequency and the blade passing frequency are both within any frequency range in the target noise information, it means that the noise frequency generated by the driving member 31 at the current rotation speed will not be superimposed with the noise frequencies generated by other fans to form a resonance, and the preselected value is substituted into the analysis formula to obtain the inclination angle, which is to analyze that the air volume generated by the driving member 31 at the rotation speed of the numerical value reflected by the preselected value can meet the air volume reflected by the air volume information.

[0091] For example, assuming that Q is 10 m³ / s, D=0.5 m, b=0.1 m, and n=1000 rpm, β=arctan[(9.87*0.25*0.1*1000) / (60*10)] is approximately equal to 67.7°.

[0092] S314, determine whether the inclination angle is within the adjustable angle range. If the inclination angle is within the adjustable angle range, obtain the blowing adjustment information indicating that the angle adjustment mechanism 23 adjusts the inclination angle of the blade 222 to the inclination angle, and indicates that the driving member 31 adjusts the rotation speed to a preselected value; wherein the adjustable angle range reflects the angle range in which the blade 222 can be adjusted by the angle adjustment mechanism 23; if the inclination angle is not within the adjustable angle range, substitute the value obtained by adding 1 to n into n in step a and repeat steps a and b.

[0093] It can be understood that the method of obtaining the adjustable angle range can be to receive data transmitted by the user, or to retrieve the corresponding adjustable angle range of the blade 222 from a preset database, etc., but it is not limited to this. If the inclination angle is within the adjustable angle range, it means that the air supply volume reflected by the air volume information can be satisfied by changing the inclination angle of the blade 222 at the current speed, and the blast adjustment information indicating that the angle adjustment mechanism 23 adjusts the inclination angle of the blade 222 to the inclination angle and instructs the drive member 31 to adjust the speed to the preselected value can avoid resonance while satisfying the air supply volume. If the inclination angle is not within the adjustable angle range or there is no solution to calculate the inclination angle through the analytical formula, then the value obtained by adding 1 to n is substituted into n in step a, and steps a and b are repeated to calculate whether the drive member 31 has an inclination angle of the blade 222 that satisfies the air supply volume and avoids resonance at another speed.

[0094] S320, after confirming the target magnetic field strength as the value obtained by dividing the stiffness reflected by the target stiffness information by the material constant and taking the square root thereof, the motor adjustment information instructing the magnetic flux ring 32 to adjust the magnetic field strength to the target magnetic field strength is obtained; wherein the material constant reflects the degree of influence of the magnetic field strength on the shear modulus of the magnetic flux ring 32.

[0095] It is understood that the material constants can be obtained by receiving data transmitted by the user, or by searching a preset database to obtain the corresponding material constants, etc., but it is not limited thereto. The target magnetic field strength is obtained by calculation, and the motor adjustment information indicating that the magnetic flux ring 32 adjusts the magnetic field strength to the target magnetic field strength is obtained, which can play a buffering role and reduce the vibration transmission.

[0096] For example, assuming that the target stiffness information reflects a stiffness of 35,825 N / m and the material constant is 0.1, the target magnetic field strength = ≈598A / m.

[0097] S330, confirming the air blowing adjustment information and the motor adjustment information as a control solution.

[0098] It can be understood that confirming the air blowing adjustment information and the motor adjustment information as a control scheme can avoid the rotation frequency and the blade passing frequency being consistent or close to the noise frequency generated by the cooling fan of other electronic components in the car, thereby causing resonance and causing the noise energy to be amplified. The driving member 31 provides power to drive the rotating receiving member 21 to rotate, and each magnetic flow ring 32 adjusts its own stiffness according to the road conditions of the car, which plays a buffering role on the driving member 31 and reduces vibration transmission.

[0099] The automobile blower motor 100 provided with a buffering and noise reduction structure provided in the embodiment of the present application may also include a control unit that is respectively communicatively connected to the angle adjustment mechanism 23, the driving member 31 and the magnetic flow ring 32. The control unit may include: at least one processor, at least one memory and a computer program stored in at least one memory and executable on at least one processor. When the processor executes the computer program, the automobile blower motor 100 provided with a buffering and noise reduction structure implements the steps in any of the above-mentioned blower motor control method embodiments.

[0100] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in a memory and executed by a processor to complete the present application. One or more modules / units may be a series of computer program instruction segments capable of completing a specific function, and the instruction segments are used to describe the execution process of the computer program in the control unit.

[0101] The control unit may be a computing device such as a control box, a single-chip microcomputer, a circuit board, etc. The control unit may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that the above embodiments are merely examples of the control unit and do not constitute a limitation on the control unit, which may include more or fewer components, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.

[0102] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0103] In some embodiments, the memory may be an internal storage unit of the control unit, such as a hard disk or memory of the control unit. In other embodiments, the memory may also be an external storage device of the control unit, such as a plug-in hard disk equipped on the control unit, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the memory may also include both an internal storage unit of the control unit and an external storage device. The memory is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as program code of a computer program. The memory may also be used to temporarily store data that has been output or is to be output.

[0104] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0105] An embodiment of the present application provides a computer program product. When the computer program product runs on a control unit, the control unit implements the steps in any of the above method embodiments.

[0106] 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 present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the control unit, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0107] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0109] In the embodiments provided in the present application, it should be understood that the disclosed automobile blower motor 100 with a buffer noise reduction structure and the blower motor control method can be implemented in other ways. For example, the embodiments of the automobile blower motor 100 with a buffer noise reduction structure and the blower motor control method described above are only illustrative. In addition, the coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0110] 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 network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0111] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automobile blower motor with a buffer noise reduction structure, characterized in that: include: A shell, wherein the shell has an airway accommodating space, and the shell is provided with an air inlet hole and an air delivery hole connected to the airway accommodating space; an airflow conveying part, located in the airway accommodating space and rotatably arranged on the shell, the airflow conveying part comprising a rotating accommodating member, a plurality of air delivery mechanisms and an angle adjustment mechanism, the rotating accommodating member is located in the airway accommodating space on a side away from the air inlet and rotatably arranged on the shell, the rotating accommodating member having a rotating accommodating space, and the rotating accommodating member is provided with a plurality of rotating holes connected to the rotating accommodating space; The air supply mechanism is partially located in the airway accommodating space and partially located in the rotating accommodating space through the rotating hole. The air supply mechanism is rotatably arranged on the rotating accommodating member, and the air supply mechanism is used to promote air flow; the angle adjustment mechanism is partially located in the rotating accommodating space and arranged on the rotating accommodating member, and the angle adjustment mechanism is respectively connected to the portion of each air supply mechanism located in the rotating accommodating space, and the angle adjustment mechanism is used to drive each air supply mechanism to rotate around the central axis of the rotating hole to change the inclination angle of the air supply mechanism; as well as The driving part is arranged on a side of the outer shell away from the air inlet, and the driving part includes a driving member and a plurality of magnetic flow rings. The driving member is arranged on the outer shell and connected to the rotating container, and the driving member is used to drive the rotating container to rotate so as to drive the air supply mechanism to rotate around the output shaft of the driving member, thereby pushing the air to be output from the air supply hole; the magnetic flow ring is arranged on the driving member and surrounds the driving member, and the magnetic flow ring is used to adjust its own stiffness.

2. The automobile blower motor with a buffer noise reduction structure according to claim 1, characterized in that: The air supply mechanism comprises: A support member, partly located in the airway accommodating space and partly located in the rotation accommodating space through the rotation hole, the support member being rotatably disposed on the rotation accommodating member; a blade, located in the airway accommodating space and disposed on the support member, the blade being used to promote air flow; and A mounting member, located in the rotation accommodation space and arranged on the support member; Among them, the angle adjustment mechanism is connected to each of the mounting parts respectively, and the angle adjustment mechanism is used to drive the mounting parts to rotate to drive the support parts to rotate and then drive the blades to rotate around the center axis of the rotating hole to change the inclination angle of the blades, and the inclination angle is the angle between the tangent of the blade outlet and the radial direction.

3. The automobile blower motor with a buffer noise reduction structure as claimed in claim 2, characterized in that: The angle adjustment mechanism comprises: an adjusting driving member, located in the airway accommodating space and arranged on the rotating accommodating member; a driving disk, located in the rotation accommodation space and rotatably disposed on the rotation accommodation member; and A plurality of connecting members, located in the rotation accommodating space and rotatably disposed on the driving disk, each of the connecting members is respectively connected to each of the mounting members, and one end of the connecting member away from the driving disk is rotatably connected to the mounting member; Wherein, the rotating shaft of the adjusting driving member is connected to the driving disk, and the adjusting driving member is used to drive the driving disk to rotate to drive each of the connecting members to move, and then drive the mounting member to rotate around the center axis of the rotating hole.

4. The automobile blower motor with a buffer noise reduction structure as claimed in claim 1, characterized in that: The driving unit further includes: A drive accommodating member is arranged on a side of the outer shell away from the air inlet, the drive accommodating member has a drive accommodating space, the drive member is located in the drive accommodating space and is arranged on the drive accommodating member, and each of the magnetic flow rings is located in the drive accommodating space and between the drive accommodating member and the drive member.

5. A method for controlling a blower motor, characterized in that: Applied to the automobile blower motor with a buffer noise reduction structure as claimed in any one of claims 1 to 4, the method comprises: Acquire comprehensive information; wherein the comprehensive information includes multiple noise information and road condition information, the noise information reflects the frequency of noise generated by the cooling fan of the electronic components in the car when running, and the road condition information reflects the bump frequency of the car when passing through a bumpy road; Based on the comprehensive information, adjustment range information is obtained; wherein the adjustment range information includes target noise information and target stiffness information, the target noise information includes a plurality of frequency ranges reflecting the noise generated by the airflow conveying part, and the target stiffness information reflects the stiffness of the magnetic flow ring; A control scheme is obtained based on the adjustment range information; wherein the control scheme includes air blowing adjustment information for indicating the angle adjustment mechanism and the driving member and motor adjustment information for indicating the magnetic flux ring.

6. The blower motor control method according to claim 5, characterized in that: The obtaining the adjustment range information based on the comprehensive information includes: Obtaining the target noise information based on each of the noise information; Obtaining the target stiffness information based on the road condition information; The target noise information and the target stiffness information are confirmed as the adjustment range information.

7. The blower motor control method according to claim 6, characterized in that: The obtaining the target noise information based on each of the noise information includes: After multiplying the noise frequency reflected by each piece of the noise information by a first preset value to obtain a plurality of first values, multiplying the noise frequency reflected by each piece of the noise information by a second preset value to obtain a plurality of second values; confirming a numerical interval between the first value and the second value corresponding to each of the noise information as an avoidance interval; Acquire noise range information; wherein the noise range information is the frequency range of the noise that can be generated by the airflow conveying unit; After confirming as a target range a continuous numerical range section that does not contact any numerical range section reflected by the avoidance section among the numerical range sections reflected by the noise range information, the entire target range is confirmed as the target noise information.

8. The blower motor control method according to claim 6, characterized in that: The obtaining the target stiffness information based on the road condition information includes: Obtaining total stiffness; wherein the total stiffness is the sum of the structural stiffness and the magnetic fluid stiffness; The value obtained by taking the square root of the value obtained by dividing the total stiffness by the system mass is confirmed as the natural frequency; wherein the system mass is the mass of the driving member; The absolute value obtained by subtracting the turbulence frequency from the natural frequency is determined as the frequency margin; The value obtained by multiplying the system mass by the square of the sum of the bump frequency and the frequency margin minus the structural stiffness is confirmed as the target stiffness information.

9. The blower motor control method according to claim 5, characterized in that: The obtaining of a control scheme based on the adjustment range information includes: obtaining the air blowing adjustment information based on the adjustment range information; After the value obtained by dividing the stiffness reflected by the target stiffness information by the material constant and then taking the square root thereof is confirmed as the target magnetic field strength, the motor adjustment information instructing the magnetic flux ring to adjust the magnetic field strength to the target magnetic field strength is obtained; wherein the material constant reflects the degree of influence of the magnetic field strength on the shear modulus of the magnetic flux ring; The air blowing adjustment information and the motor adjustment information are confirmed as the control scheme.

10. The blower motor control method according to claim 9, characterized in that: The obtaining the air blowing adjustment information based on the adjustment range information includes: Acquire air volume information and rotation speed information; wherein the air volume information reflects the air volume of the air flow conveying unit, and the rotation speed information reflects the rotation speed range that the driving member can adjust in order from small to large; Step a, after confirming the nth value in the speed range reflected by the speed information as a preselected value, dividing the preselected value by 60 to obtain the rotation frequency, and then multiplying the rotation frequency by the number of blades to obtain the blade passing frequency; wherein the initial value of n is 1, and the number of blades is the number of the air supply mechanism; Step b, determining whether the rotation frequency and the blade passing frequency are both within the frequency range of any one of the target noise information; if the rotation frequency or the blade passing frequency is not within the frequency range of any one of the target noise information, substituting the value obtained by adding 1 to n into n in step a and then re-performing step a and step b; if the rotation frequency and the blade passing frequency are both within the frequency range of any one of the target noise information, substituting the preselected value into the analysis formula to obtain the inclination angle; Determine whether the inclination angle is within the adjustable angle range. If the inclination angle is within the adjustable angle range, obtain the blowing adjustment information for instructing the angle adjustment mechanism to adjust the inclination angle of the blade to the inclination angle, and instructing the driving member to adjust the rotation speed to the preselected value; wherein the adjustable angle range reflects the angle range in which the blade can be adjusted by the angle adjustment mechanism; if the inclination angle is not within the adjustable angle range, substitute the value obtained by adding 1 to n into n in step a, and repeat steps a and b.

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