CN215419778U - Brushless direct current motor air duct with good noise reduction effect - Google Patents
Brushless direct current motor air duct with good noise reduction effect Download PDFInfo
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- CN215419778U CN215419778U CN202121462920.7U CN202121462920U CN215419778U CN 215419778 U CN215419778 U CN 215419778U CN 202121462920 U CN202121462920 U CN 202121462920U CN 215419778 U CN215419778 U CN 215419778U
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- stator core
- air duct
- noise reduction
- reduction effect
- direct current
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Abstract
The utility model discloses a brushless direct current motor air duct with good noise reduction effect, which comprises a casing and is characterized in that: the novel motor stator comprises a shell, and is characterized in that an air channel is formed in the inner side of the shell, a fixing frame is arranged in the air channel, a stator core fixing cavity is fixed on the inner side of the fixing frame, a bearing installation chamber is arranged on one side of the stator core fixing cavity, guide vanes are arranged on the outer side of the stator core fixing cavity, a stator core is arranged in the stator core fixing cavity, an insulating framework is arranged in the stator core, a laminated core is installed on the inner side of the insulating framework, a guide pin is connected to the rear end of the laminated core, a working cavity is arranged at the front end of the inner side of the shell, an integrated bearing is installed in the bearing installation chamber, a rotating shaft is arranged on one side of the integrated bearing, and an impeller is arranged on one side of the rotating shaft.
Description
Technical Field
The utility model relates to the technical field of micro motors, in particular to a brushless direct current motor air duct with a good noise reduction effect.
Background
The existing hand-held hair dryer generally requires the characteristics of small volume and light weight, so that a miniature or small brushless motor is generally adopted, and the motor has the characteristics of small volume, light weight, high power density, high efficiency and the like.
Brushless motors in the prior art comprise: casing, stator core subassembly, rotor subassembly etc. constitute, this kind of motor adopts single-phase noninductive control technique in the market, and this scheme is big to the motor control technique degree of difficulty, shortcoming with high costs, and the rotor generally adopts assembled bearing assembly, and is higher to rigging equipment and assembly process requirement in the bearing assembly assembling process, if do not adopt the assembly equipment that the precision is higher to make the bearing damage when bearing assembly pressure equipment bearing very easily. The stator core assembly is installed and is fixedly installed with two or more than two positioning fixing columns in the casing, the installation mode is favorable for heat dissipation of the iron core, but the coaxiality of the stator iron core and the rotor magnet is difficult to guarantee, so that the motor generates eccentric magnetic pulling force in the operation process to influence the noise and the service life of the motor, and therefore, the brushless direct current motor air duct with strong practicability and good noise reduction effect is necessary to design.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a brushless direct current motor air duct with good noise reduction effect so as to solve the problems in the background technology.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a good brushless DC motor dryer of noise reduction effect, includes the casing, its characterized in that: the wind channel has been seted up to the inboard of casing, the inside in wind channel is provided with the mount, the inboard of mount is fixed with the fixed chamber of stator core, one side in the fixed chamber of stator core is provided with bearing installation room, the outside in the fixed chamber of stator core is provided with guide vane, the inside in the fixed chamber of stator core is provided with stator core, stator core's inside is provided with insulating skeleton, laminated core is installed to insulating skeleton's inboard, laminated core's rear end is connected with the guide pin.
According to the technical scheme, the front end of the inner side of the casing is provided with the working cavity, the integrated bearing is arranged inside the bearing installation chamber, the rotating shaft is arranged on one side of the integrated bearing, the impeller is arranged on one side of the rotating shaft, and the impeller is located inside the working cavity.
According to the technical scheme, the outer side of the laminated core is provided with the semicircular groove, and the guide vanes can extend.
According to the technical scheme, the outer diameter of the bearing installation chamber and the diameter of the blade hub of the impeller are the same.
According to the technical scheme, the boss is arranged inside the stator core fixing cavity.
According to the technical scheme, the number of the guide vanes can be 8 to 13.
Compared with the prior art, the utility model has the following beneficial effects: in the utility model, the raw materials are mixed,
(1) the stator core fixing cavity is arranged, and the bearing installation chamber and the stator core fixing cavity are connected and supported with the shell through the guide vanes, so that a flow channel which is favorable for ventilation is formed among the shell, the bearing installation chamber and the stator core fixing cavity;
(2) through being provided with the working chamber, working chamber and bearing installation room have the axiality requirement, and the impeller mounted position should be according to the terminal surface parallel and level of air inlet face guide vane upper end afterbody and working chamber, confirm the axial distance of impeller and guide vane terminal surface promptly, and this operating condition can effectively reduce interelectrode interference.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is an overall sectional view of a brushless dc motor duct according to the present invention;
fig. 2 is an exploded view of a brushless dc motor according to the present invention;
FIG. 3 is a schematic view of the structure of the stator core assembly of the air duct housing according to the present invention;
in the figure: 1. a rotating shaft; 2. an impeller; 3. an integral bearing; 4. a housing; 5. a guide vane; 6. leading a needle; 7. an insulating framework; 8. a laminated core; 100. an air duct; 101. a working chamber; 102. a fixed mount; 103. a semicircular groove; 104. a stator core fixing cavity; 105. a boss; 106. a stator core; 107. and a bearing mounting chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a brushless DC motor dryer that noise reduction effect is good, includes casing 4, its characterized in that: an air duct 100 is arranged on the inner side of the casing 4, a fixing frame 102 is arranged inside the air duct 100, a stator core fixing cavity 104 is fixed on the inner side of the fixing frame 102, a bearing installation chamber 107 is arranged on one side of the stator core fixing cavity 104, guide vanes 5 are arranged on the outer side of the stator core fixing cavity 104, a stator core 106 is arranged inside the stator core fixing cavity 104, an insulating framework 7 is arranged inside the stator core 106, a laminated core 8 is arranged on the inner side of the insulating framework 7, a guide pin 6 is connected to the rear end of the laminated core 8, the bearing installation chamber 107 and the stator core fixing cavity 104 are connected and supported with the casing 4 through the guide vanes 5, so that a flow passage beneficial to ventilation is formed between the casing 4 and the bearing installation chamber 107 as well as the stator core fixing cavity 104, after the stator core 106 is installed in place, a certain distance exists between the tail end of the insulating framework 7 of the stator core 106 and the bottom of the stator core fixing cavity 104, the upper part of the stator core 106 is exposed in the air, and the stator core 106 is subjected to forced air cooling to reduce the temperature of the laminated core 8 when the motor normally operates;
the front end of the inner side of the machine shell 4 is provided with a working cavity 101, the inside of the bearing installation chamber 107 is provided with an integrated bearing 3, one side of the integrated bearing 3 is provided with a rotating shaft 1, one side of the rotating shaft 1 is provided with an impeller 2, the impeller 2 is positioned in the working cavity 101, the working cavity 101 and the bearing installation chamber 107 have coaxiality requirements, the installation position of the impeller 2 is flush with the end surface of the working cavity 101 according to the tail part of the upper end of the guide vane 5 on the air inlet surface, namely the axial distance between the impeller 2 and the end surface of the guide vane 5 is determined, and the working state can effectively reduce interelectrode interference;
the outer side of the laminated core 8 is provided with semicircular grooves 103, the guide vanes 5 can extend, the guide vanes 5 extend to the tail of the end face of the stator core fixing cavity 104, so that an air duct can be extended, the stator core fixing cavity 104 is reinforced, the airflow noise is reduced, and 3 semicircular grooves 103 are distributed on the outer diameter of the stator core 106 and used for positioning and storing bonding glue to fix the stator core 106;
the outer diameter of the bearing installation chamber 107 is the same as the diameter of a blade hub of the impeller 2, the size of the fan blade of the impeller 2 is the same as the radial diameter of the guide vane 5, and the state is favorable for reducing power loss of the motor and reducing wind noise of the motor;
a boss 105 is arranged in the stator core fixing cavity 104, and the boss 105 is used for axially positioning the stator core 106;
the number of the guide vanes 5 can be 8 to 13, and the guide vanes 5 extend to the tail end of the stator core fixing cavity 104, so that the strength of the stator core fixing cavity 104 is increased, and the vibration is reduced.
The working principle is as follows: the bearing installation chamber and the stator core fixing cavity are connected and supported through the guide vanes and the shell, so that a flow channel which is favorable for ventilation is formed among the shell, the bearing installation chamber and the stator core fixing cavity;
the working cavity and the bearing installation chamber have coaxiality requirements, the installation position of the impeller is flush with the end surface of the working cavity according to the tail part of the upper end of the guide vane of the air inlet surface, namely the axial distance between the impeller and the end surface of the guide vane is determined, and the interelectrode interference can be effectively reduced under the working state;
the guide vanes extend to the tail part of the end face of the stator core fixing cavity, so that an air channel can be extended, the stator core fixing cavity is reinforced, airflow noise is reduced, and semicircular grooves are distributed in the outer diameter of the stator core and used for positioning and storing bonding glue to fix the stator core;
the size of the impeller blades is the same as the radial diameter of the guide vanes, and the state is favorable for reducing the power loss of the motor and reducing the wind noise of the motor;
the boss is used for axially positioning the stator core;
the guide vanes extend to the tail end of the stator core fixing cavity, and the strength of the stator core fixing cavity is increased, so that vibration is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a good brushless DC motor dryer of noise reduction effect, includes casing (4), its characterized in that: air duct (100) have been seted up to the inboard of casing (4), the inside in air duct (100) is provided with mount (102), the inboard of mount (102) is fixed with stator core fixed chamber (104), one side of stator core fixed chamber (104) is provided with bearing installation room (107), the outside of stator core fixed chamber (104) is provided with guide vane (5), the inside of stator core fixed chamber (104) is provided with stator core (106), the inside of stator core (106) is provided with insulating skeleton (7), laminated core (8) are installed to the inboard of insulating skeleton (7), the rear end of laminated core (8) is connected with and draws needle (6).
2. The brushless direct current motor air duct with good noise reduction effect according to claim 1, characterized in that: the front end of the inner side of the casing (4) is provided with a working cavity (101), the inside of the bearing installation chamber (107) is provided with an integrated bearing (3), one side of the integrated bearing (3) is provided with a rotating shaft (1), one side of the rotating shaft (1) is provided with an impeller (2), and the impeller (2) is located inside the working cavity (101).
3. The brushless direct current motor air duct with good noise reduction effect according to claim 2, characterized in that: semicircular grooves (103) are formed in the outer side of the laminated iron core (8), and the guide vanes (5) can extend.
4. The brushless direct current motor air duct with good noise reduction effect according to claim 3, characterized in that: the outer diameter of the bearing installation chamber (107) is the same as the diameter of a blade hub of the impeller (2).
5. The brushless direct current motor air duct with good noise reduction effect according to claim 4, characterized in that: and a boss (105) is arranged in the stator core fixing cavity (104).
6. The wind barrel of the brushless direct current motor with good noise reduction effect according to claim 5, wherein: the number of the guide vanes (5) can be 8 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462920.7U CN215419778U (en) | 2021-06-30 | 2021-06-30 | Brushless direct current motor air duct with good noise reduction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462920.7U CN215419778U (en) | 2021-06-30 | 2021-06-30 | Brushless direct current motor air duct with good noise reduction effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215419778U true CN215419778U (en) | 2022-01-04 |
Family
ID=79643162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121462920.7U Active CN215419778U (en) | 2021-06-30 | 2021-06-30 | Brushless direct current motor air duct with good noise reduction effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215419778U (en) |
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2021
- 2021-06-30 CN CN202121462920.7U patent/CN215419778U/en active Active
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