CN215870931U - Noise reduction motor and hair drier - Google Patents

Noise reduction motor and hair drier Download PDF

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Publication number
CN215870931U
CN215870931U CN202121054338.7U CN202121054338U CN215870931U CN 215870931 U CN215870931 U CN 215870931U CN 202121054338 U CN202121054338 U CN 202121054338U CN 215870931 U CN215870931 U CN 215870931U
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China
Prior art keywords
fan blade
motor
noise
rotating shaft
noise reduction
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Active
Application number
CN202121054338.7U
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Chinese (zh)
Inventor
姚劲夫
姚劲松
宗锋
李洪军
李兴元
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Guangdong Tianyang Motor Co ltd
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Foshan City Nanhai District Tianyang Motor Manufacturing Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/007Axial-flow pumps multistage fans

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model discloses a noise reduction motor, comprising: the air guide device comprises a motor shell, a fan blade and a fan blade; the rotor assembly is arranged in the installation cavity and is provided with a rotating shaft, the rotating shaft is fixedly connected with a first fan blade and a second fan blade in sequence from back to front in front of the installation part, and one end of the rotating shaft, far away from the second fan blade, is fixedly connected with a magnetic ring; and the stator assembly is arranged in the mounting cavity and is used for driving the magnetic ring to rotate. Under the condition of the same wind speed and wind pressure, the rotating speed of the brushless motor can be reduced by applying the utility model, so that the howling sound generated by the fan blades and the friction noise of the bearing are eliminated, and the diameter size and the weight of the brushless motor can be reduced by applying the utility model, so that the production cost is reduced. Meanwhile, the utility model also provides a blower applying the noise reduction motor.

Description

Noise reduction motor and hair drier
Technical Field
The utility model relates to the technical field of motors, in particular to a noise reduction motor and a blower.
Background
The motor of the existing high-rotating-speed hair dryer is generally a brushless motor. At present, in order to increase the wind speed and wind pressure of the brushless motor, the technical effects of high wind speed and high wind pressure can be achieved by increasing the diameter size of the brushless motor or increasing the rotating speed of the brushless motor, but the noise of the brushless motor can be obviously improved by the two speed-increasing and pressure-increasing modes.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a noise reduction motor that solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.
According to the noise reduction motor of the embodiment of the first aspect of the utility model, the noise reduction motor comprises:
the air guide device comprises a motor shell, a fan blade and a fan blade, wherein an installation part is arranged in the motor shell;
the rotor assembly is arranged in the installation cavity and provided with a rotating shaft, the rotating shaft is fixedly connected with a first fan blade and a second fan blade in front of the installation part, the second fan blade is positioned in front of the first fan blade, and one end of the rotating shaft far away from the second fan blade is fixedly connected with a magnetic ring;
the stator assembly is arranged in the mounting cavity and is positioned behind the first fan blade, and the stator assembly is used for driving the magnetic ring to rotate so as to drive the first fan blade and the second fan blade to generate backward airflow flowing through the air duct.
The noise reduction motor provided by the embodiment of the utility model at least has the following beneficial effects: because the fan blade is provided with the two fan blades capable of generating airflow simultaneously, and the airflow generated by the two fan blades can be mutually superposed, the wind speed and the wind pressure of the fan blade are superior to those of the prior art under the conditions of the same rotating speed and the same diameter size; or conversely, under the condition of the same wind speed and wind pressure, the rotating speed of the brushless motor can be reduced by applying the utility model, so that the howling sound generated by the fan blades and the friction noise of the bearing are eliminated, and the diameter size and the weight of the brushless motor can be reduced by applying the utility model, so that the production cost is reduced.
According to some embodiments of the present invention, the first fan blade and the second fan blade are provided with the same number of rotating blades, and in order to enable the first fan blade to pressurize the airflow generated by the second fan blade, the first fan blade and the second fan blade are arranged around the rotating shaft in a staggered manner, that is, the first fan blade and the second fan blade are not overlapped in front and back, so that asynchronization exists between the first fan blade and the second fan blade during rotation, and the suction effect of the first fan blade on the airflow of the second fan blade is enhanced, thereby achieving the purpose of pressurization.
According to some embodiments of the present invention, the first fan blade and the second fan blade are provided with different numbers of rotating blades, in order to enable the first fan blade to pressurize the airflow generated by the second fan blade, the number of the rotating blades of the first fan blade is greater than that of the rotating blades of the second fan blade, that is, the first fan blade and the second fan blade are not overlapped in front and back, so that the first fan blade and the second fan blade rotate asynchronously, thereby enhancing the suction effect of the first fan blade on the airflow of the second fan blade, and achieving the purpose of pressurizing.
According to some embodiments of the utility model, in order to enable the airflow generated by the second fan blade to be completely transmitted to the first fan blade and improve the safety factor of the noise reduction motor, the first fan blade and the second fan blade are both located in the motor casing.
According to some embodiments of the present invention, in order to install the rotating shaft in the installation cavity, a bearing is further disposed on the rotating shaft, the bearing is used for installing the rotating shaft in the installation cavity, and the magnetic ring, the bearing, the first fan blade and the second fan blade are sequentially disposed on the rotating shaft from back to front.
According to some embodiments of the utility model, the stator assembly includes a stator core and a plurality of winding coils, the stator core is provided with a plurality of tooth slots, the plurality of winding coils are respectively wound on the corresponding tooth slots, and the stator core is enclosed outside the magnetic ring, so that the stator assembly can drive the magnetic ring to rotate.
According to some embodiments of the utility model, the noise reduction motor further comprises a driver, the plurality of winding coils are electrically connected with the driver, and the driver is used for controlling an internal magnetic field of the stator assembly so as to drive the magnetic ring to rotate.
According to some embodiments of the present invention, the motor housing and the mounting portion are both circular bodies to reduce resistance to airflow, and all the air guide blades are circumferentially and uniformly distributed around the outer circumferential surface of the mounting portion, so that spaces between every two adjacent air guide blades are uniform to avoid generating a wind speed difference.
According to some embodiments of the utility model, the motor housing, the mounting portion and the wind guide blade are all conductors, and the motor housing is provided with a grounding male terminal, and the grounding male terminal is arranged on the motor housing so as to facilitate grounding of the motor housing.
According to the blower of the embodiment of the second aspect of the utility model, the blower comprises an airflow channel and the noise reduction motor, the airflow channel is provided with an air inlet and an air outlet, the noise reduction motor is installed in the airflow channel, and the second fan blade is arranged towards the direction of the air inlet.
According to the hair dryer of the embodiment of the utility model, at least the following beneficial effects are achieved: adopt the hair-dryer of motor of making an uproar falls under the prerequisite that does not influence its normal use, can effectively reduce the produced noise of its during operation, and it is better to use experience.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic perspective view of a noise reduction motor according to an embodiment of the present invention;
FIG. 2 is a top view of the noise reducing motor shown in FIG. 1;
FIG. 3 is a cross-sectional view of the noise reducing motor of FIG. 2 taken along line A-A;
fig. 4 is an exploded view of the noise-reducing motor shown in fig. 1.
In the drawings: 100-motor shell, 200-rotor component, 300-mounting part, 310-mounting cavity, 311-rotor cavity, 400-wind guide blade, 110-air duct, 210-rotating shaft, 220-magnetic ring, 250-bearing, 230-first blade, 240-second blade, 231-rotating blade, 120-groove and 121-grounding male terminal.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1 to 4, the noise reduction motor according to the embodiment of the first aspect of the present invention includes a motor housing 100, a rotor assembly 200, a stator assembly (not shown in the drawings), and a driver (not shown in the drawings), wherein a mounting portion 300 is disposed in the motor housing 100, a mounting cavity 310 is disposed in the mounting portion 300, the mounting cavity 310 includes a rotor cavity 311 and a stator cavity, a size of the stator cavity is greater than a size of the rotor cavity 311, the rotor cavity 311 is communicated with the stator cavity, and the rotor assembly 200 and the stator assembly are respectively mounted in the rotor cavity 311 and the stator cavity; the mounting portion 300 and a plurality of air guide blades 400 are fixedly connected between the motor housing 100, and an air duct 110 is formed between the motor housing 100 and the mounting portion 300.
Specifically, the rotor assembly 200 includes a rotating shaft 210, a magnetic ring 220, a bearing 250, a first blade 230 and a second blade 240, the bearing 250 is installed in the rotating cavity 311, and the bearing 250 is in interference fit with the rotating shaft 210 to bear and fix the rotating shaft 210; the first fan blade 230 and the second fan blade 240 are fixedly connected to the rotating shaft 210 in front of the mounting portion 300, the second fan blade 240 is located in front of the first fan blade 230, the rotating ranges of the two fan blades almost cover the air duct 110, the magnetic ring 220 is fixedly connected to one end of the rotating shaft 210 far away from the second fan blade 240, the magnetic ring 220 is a permanent magnet, and at this time, the magnetic ring 220, the bearing 250, the first fan blade 230 and the second fan blade 240 are sequentially arranged on the rotating shaft 210 from back to front. The stator assembly includes a stator core and a plurality of winding coils, the stator core is made of a magnetic conductive material, such as a silicon steel material, the stator core is provided with a plurality of tooth slots, the plurality of winding coils are respectively wound on the corresponding tooth slots, the stator core is arranged around the outside of the magnetic ring 220, the plurality of winding coils are all electrically connected with the driver, after the driver is powered on, the magnetic ring 220 on the rotor assembly 200 is driven by the lorentz force of the stator assembly to rotate under the control of the driver, so as to drive the rotating shaft 210 of the rotor assembly 200 to rotate, and finally, the first fan blade 230 and the second fan blade 240 are driven to rotate simultaneously, so as to drive the first fan blade 230 and the second fan blade 240 to generate backward airflow flowing through the air duct 110.
By adopting the structure, the wind power generation device is provided with the two fan blades capable of generating airflow simultaneously, and the airflow generated by the two fan blades can be mutually superposed, so that the wind speed and the wind pressure of the wind power generation device are superior to those of the prior art under the conditions of the same rotating speed and the same diameter size; or conversely, under the condition of the same wind speed and wind pressure, the rotating speed of the brushless motor can be reduced by applying the utility model, so that the howling sound generated by the fan blades and the friction noise of the bearing 250 can be eliminated, and the diameter size and the weight of the brushless motor can be reduced by applying the utility model, so that the production cost is reduced.
As shown in fig. 4, in some embodiments of the present invention, in order to enable the first fan blade 230 to pressurize the airflow generated by the second fan blade 240, the first fan blade 230 and the second fan blade 240 are not overlapped front and back, so that asynchronization exists between the first fan blade 230 and the second fan blade 240 during rotation, so as to enhance the suction effect of the first fan blade 230 on the airflow of the second fan blade 240, thereby achieving the purpose of pressurization. Specifically, when the first fan blade 230 and the second fan blade 240 are provided with the same number of rotating blades 231, the first fan blade 230 and the second fan blade 240 are arranged in a staggered manner around the rotating shaft 210, if both the first fan blade 230 and the second fan blade 240 are composed of eleven rotating blades 231, an angle of difference between two adjacent rotating blades 231 is about 32 °, at this time, an angle of misalignment between two fan blades is preferably 32 °/2 — 16 °, and similarly, if the first fan blade 230 and the second fan blade 240 are composed of thirteen rotating blades 231, an angle of misalignment between two fan blades is preferably 27 °/2 — 13.5 °. In other embodiments, when the first blade 230 and the second blade 240 have different numbers of rotating blades, the number of the rotating blades 231 of the first blade 230 is greater than the number of the rotating blades 231 of the second blade 240, and if the second blade 240 is composed of eleven rotating blades 231, the first blade 230 may be composed of thirteen rotating blades 231.
As shown in fig. 1 and fig. 3, in some embodiments of the present invention, in order to enable the airflow generated by the second fan blade 240 to be completely transmitted to the first fan blade 230, the first fan blade 230 and the second fan blade 240 are both located inside the motor casing 100, that is, both fan blades rotate inside the motor casing 100, and the safety factor of the noise reduction motor is increased.
As shown in fig. 3 and 4, in some embodiments of the present invention, in order to reduce resistance of the airflow in the air duct 110, the motor housing 100 and the mounting portion 300 may be selected as circular rings, which are coaxially disposed, and in order to make the layout of the air duct 110 more reasonable, all the air guide blades 400 are circumferentially and uniformly distributed around the outer circumferential surface of the mounting portion 300, so that the spaces between every two adjacent air guide blades 400 are uniform, so as to stabilize the wind speed when the airflow passes through the air duct 110.
Further, all the wind guide blades 400 can be selected as curved blade blades, and the inclination of each curved blade is the same, so that under the condition that the airflow density is not changed, the arrangement can increase the local pressure in the air duct 110 to press the airflow to reach a higher flowing speed, thereby enhancing the wind speed. It should be noted that, in the present invention, the shapes of the motor housing 100 and the mounting portion 300 are not specifically limited, and the shape of the air guide vane 400 is also not specifically limited, and the motor housing 100 and the mounting portion 300 may also have other shapes, for example, a ring body whose outer periphery is a rounded rectangle, and the air guide vane 400 may also have other shapes, for example, a straight blade.
In some embodiments of the present invention, in order to enable the bearing 250 of the rotor assembly 200 to be firmly installed in the rotor cavity 311, four glue grooves (not shown in the drawings) are provided on the inner wall surface of the rotor cavity 311, and are arranged around the center circumference of the rotor cavity 311. Before the bearing 250 is installed, pouring the pouring sealant into each glue groove, then installing the bearing 250, if the bearing 250 needs to be disassembled, blowing the pouring sealant to the glue grooves by using a hot air gun, and smoothly disassembling the bearing 250 after the pouring sealant is melted. It is understood that the number of the glue grooves may also be two, three, five, etc., without being limited thereto.
As shown in fig. 1 and fig. 2, in some embodiments of the present invention, the motor casing 100, the wind-guiding blade 400, and the mounting portion 300 are all conductors, a groove 120 is formed at a rear edge of the motor casing 100, a grounding male terminal 121 is arranged in the groove 120, and the grounding male terminal 121 is a pin structure that can be detachably connected to a grounding female terminal (not shown in the drawings) to meet the grounding requirement of the noise reduction motor.
The blower according to the second aspect of the present invention includes the noise reduction motor according to the first aspect of the present invention, and further includes an airflow channel (not shown in the drawings), the airflow channel is provided with an air inlet and an air outlet, the noise reduction motor is installed in the airflow channel, the second fan blade 240 is arranged towards the air inlet, so that the airflow entering from the air inlet can be sucked into the second fan blade 240 at the first time, and the airflow generated by the noise reduction motor flows out through the air outlet. Since the blower adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. Noise reduction motor, its characterized in that includes:
the air guide structure comprises a motor shell (100), wherein an installation part (300) is arranged in the motor shell (100), an installation cavity (310) is arranged in the installation part (300), a plurality of air guide blades (400) are fixedly connected between the installation part (300) and the motor shell (100), and an air channel (110) is formed between the motor shell (100) and the installation part (300);
the rotor assembly (200) is mounted in the mounting cavity (310), the rotor assembly (200) is provided with a rotating shaft (210), the rotating shaft (210) is fixedly connected with a first fan blade (230) and a second fan blade (240) in front of the mounting part (300), the second fan blade (240) is positioned in front of the first fan blade (230), and one end of the rotating shaft (210) far away from the second fan blade (240) is fixedly connected with a magnetic ring (220);
the stator assembly is arranged in the mounting cavity (310), is located behind the first fan blade (230), and is used for driving the magnetic ring (220) to rotate so as to drive the first fan blade (230) and the second fan blade (240) to generate backward airflow flowing through the air duct (110).
2. The noise-reduced motor according to claim 1, wherein: the first fan blade (230) and the second fan blade (240) are provided with the same number of rotating blades (231), and the first fan blade (230) and the second fan blade (240) are arranged around the rotating shaft (210) in a staggered mode.
3. The noise-reduced motor according to claim 1, wherein: the first fan blade (230) and the second fan blade (240) are provided with different numbers of rotating blades (231), and the number of the rotating blades (231) of the first fan blade (230) is more than that of the rotating blades (231) of the second fan blade (240).
4. The noise-reduced motor according to claim 1, wherein: the first fan blade (230) and the second fan blade (240) are both located in the motor casing (100).
5. The noise-reduced motor according to claim 1, wherein: the rotating shaft (210) is further provided with a bearing (250), the bearing (250) is used for enabling the rotating shaft (210) to be installed in the installation cavity (310), and the magnetic ring (220), the bearing (250), the first fan blade (230) and the second fan blade (240) are sequentially arranged on the rotating shaft (210) from back to front.
6. The noise-reduced motor according to claim 1, wherein: the stator assembly comprises a stator core and a plurality of winding coils, the stator core is provided with a plurality of tooth sockets, the plurality of winding coils are wound on the corresponding tooth sockets respectively, and the stator core is arranged outside the magnetic ring (220) in a surrounding mode.
7. The noise-reduced motor of claim 6, wherein: the winding coil is electrically connected with the driver.
8. The noise-reduced motor according to claim 1, wherein: motor housing (100) with installation department (300) are the tourus, and all wind vane (400) all carry out circumference equipartition around the outer peripheral face of installation department (300).
9. The noise-reduced motor according to claim 1, wherein: motor housing (100), installation department (300) and wind blade (400) are the conductor, be equipped with ground connection male terminal (121) on motor housing (100).
10. Blower comprising a noise reduction motor according to any of claims 1 to 9, further comprising: the fan comprises an airflow channel, the airflow channel is provided with an air inlet and an air outlet, the noise reduction motor is installed in the airflow channel, and the second fan blade (240) is arranged towards the direction of the air inlet.
CN202121054338.7U 2021-05-17 2021-05-17 Noise reduction motor and hair drier Active CN215870931U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121054338.7U CN215870931U (en) 2021-05-17 2021-05-17 Noise reduction motor and hair drier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121054338.7U CN215870931U (en) 2021-05-17 2021-05-17 Noise reduction motor and hair drier

Publications (1)

Publication Number Publication Date
CN215870931U true CN215870931U (en) 2022-02-18

Family

ID=80316411

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121054338.7U Active CN215870931U (en) 2021-05-17 2021-05-17 Noise reduction motor and hair drier

Country Status (1)

Country Link
CN (1) CN215870931U (en)

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Address after: 528000 tanbian District, Changshan changhongling Industrial Park, Nanhai District, Foshan City, Guangdong Province

Patentee after: Guangdong Tianyang Motor Co.,Ltd.

Address before: 528000 tanbian District, Changshan changhongling Industrial Park, Nanhai District, Foshan City, Guangdong Province

Patentee before: FOSHAN CITY NANHAI DISTRICT TIANYANG MOTOR MANUFACTURING CO.,LTD.

CP01 Change in the name or title of a patent holder