CN204591719U - Vacuum cleaner brush DC electric fan - Google Patents
Vacuum cleaner brush DC electric fan Download PDFInfo
- Publication number
- CN204591719U CN204591719U CN201520188510.6U CN201520188510U CN204591719U CN 204591719 U CN204591719 U CN 204591719U CN 201520188510 U CN201520188510 U CN 201520188510U CN 204591719 U CN204591719 U CN 204591719U
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- vacuum cleaner
- air channel
- electric fan
- motor
- brushless motor
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Abstract
The utility model discloses a kind of vacuum cleaner brush DC electric fan, comprise fan housing, DC brushless motor, movable vane wheel, determine impeller and bonnet, air channel is formed in fan housing and bonnet, DC brushless motor is positioned at bonnet, movable vane wheel with determine impeller and be connected with DC brushless motor by rotating shaft, and both are arranged in fan housing, fan housing is provided with intake grill, be communicated with in air channel and DC brushless motor in fan housing and form the air channel that lowers the temperature, in fan housing, air channel, DC brushless motor shell are communicated with the air channel between bonnet and form absorbing sound and lowering noise air channel.The utility model decreases air flow losses, significantly improves fan efficiency, and combines with brushless electric machine, make the whole efficiency of electric fan reach 40% and more than; Optimize the flow pattern in electric fan, the power device of the efficient cooling motor staor winding of energy and control panel, makes the volume of brushless electric machine less, and weight is lighter, and plays the effect of absorbing sound and lowering noise simultaneously.
Description
Technical field
The utility model relates to vacuum cleaner electric fan field, especially relates to a kind of vacuum cleaner brush DC electric fan.
Background technique
Vacuum cleaner requires that its motor volume is little and rotating speed is high, and therefore existing vacuum cleaner generally adopts brush direct current motor, but brush direct current motor exists, and carbon brush abrasion is fast, the life-span is short shortcoming, particularly its noise are very large, large on domestic environment impact.
Although DC brushless motor has the low advantage of noise, in the prior art, DC brushless motor is applied in vacuum cleaner still exists many deficiencys.Because the internal rotor of existing DC brushless motor is made up of cylindrical permanent magnet, in electric machine rotation process, the centrifugal force of permanent magnet self makes permanent magnet produce the trend of radially displacement, when motor speed is up to more than 30000 turns, centrifugal force easily makes that permanent magnet is cracked to come off, and causes motor damage.
Therefore, the efficiency of existing electric fan is all 30 ~ 35%, generally on the low side, and it is large to there is noise, and working life is short, only has the shortcoming of 100 hours.
Model utility content
The purpose of this utility model is the defect overcoming prior art, a kind of vacuum cleaner brush DC electric fan is provided, by using DC brushless motor in vacuum cleaner, and the design to air channel in electric fan, decrease the air flow losses of electric fan, improve fan efficiency, and to combine with brushless electric machine, make the whole efficiency of electric fan reach 40% and more than.
For achieving the above object, the utility model proposes following technological scheme: a kind of vacuum cleaner brush DC electric fan, comprise fan housing, DC brushless motor, movable vane is taken turns, determine impeller and bonnet, air channel is formed in described fan housing and bonnet, described DC brushless motor is positioned at described bonnet, described movable vane wheel with determine impeller and be connected with described DC brushless motor by rotating shaft, and both are arranged in described fan housing, described fan housing is provided with intake grill, the air channel that lowers the temperature is formed in air channel and described DC brushless motor in described fan housing, air channel in described fan housing, air channel between described DC brushless motor shell and described bonnet forms absorbing sound and lowering noise air channel.
Further, described electric fan also comprises and is installed on the described control panel determined between impeller and DC brushless motor.
Preferably, described DC brushless motor comprises stator and external rotor, described external rotor comprises described motor housing and integrated type magnet ring, and described magnet ring is fixedly mounted on described motor housing, and described stator comprises stator iron core and is wound on the staor winding on described stator iron core.
Further, described motor also comprises the base with described stator iron core phase interference fit.
Preferably, described fan housing and described movable vane take turns between gap be 0.3 ~ 0.5mm.
Preferably, the rotating shaft of described motor be provided with annular knurl with the place of being connected of described shell or play muscle.
Preferably, the installation abutting end car that described rotating shaft and described movable vane are taken turns has the tapering of 3 ~ 5 degree, and length is 4 ~ 5mm.
Further, described rotating shaft is also installed with the bearing between described base and described rotating shaft.
Preferably, between described bearing and described rotating shaft, gluing fixing between described bearing and described base.
Preferably, described control panel and described motor housing are provided with vent hole.
The beneficial effects of the utility model are:
1, the utility model adopts the DC brushless motor of external rotor, inner stator structure, and have long service life, high efficiency, noise is low, the advantage of compact, is more suitable for the needs of vacuum cleaner.Experiment proves, adopt the efficiency of the utility model motor can reach 40% and more than, the life-span can reach more than 1000 hours.
2, the utility model arranges two air channels, namely from the air-flow that intake grill blows, is divided into two-part, and a part blows on the device for power switching of control panel, stator iron core and staor winding, is taken away by heat above, reduces the temperature of staor winding; Another part flows through between motor housing and bonnet, forms a layer of air stream, play the effect of absorbing sound and lowering noise while cooling motor shell.
3, the magnet ring of the utility model motor is integrated type magnet ring, when motor High Rotation Speed, can not produce and make because of centrifugal force that permanent magnet is cracked to come off, cause motor damage and Problem of Failure.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the utility model vacuum cleaner brush DC electric fan;
Fig. 2 is the cross-sectional schematic that Fig. 1 removes fan housing, impeller and bonnet are taken turns, determined to movable vane;
Fig. 3 is the plan structure schematic diagram of the utility model vacuum cleaner brush DC electric fan.
Reference character: 10, fan housing, 11, intake grill, 12, gap, 20, DC brushless motor, 21, base, 22, motor housing, 23, integrated type magnet ring, 24, stator iron core, 25, staor winding, 26, the vent hole of motor housing, 30, movable vane wheel, 40, determine impeller, 50, control panel, 60, bonnet, 70, rotating shaft, 71, annular knurl or play muscle, 72, bearing, 73, tapering, 74, copper die, 80, cooling air channel, 90, absorbing sound and lowering noise air channel.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, clear, complete description is carried out to the technological scheme of the utility model embodiment.
The utility model devises a vacuum cleaner electric fan, decreases air flow losses, significantly improves fan efficiency, and combine with brushless electric machine, make the whole efficiency of electric fan reach 40% and more than; Optimize the flow pattern in electric fan, energy is cooling motor and control panel efficiently, makes the volume of brushless electric machine less simultaneously, and weight is lighter, can play the effect of absorbing sound and lowering noise simultaneously.
Shown in composition graphs 1 ~ Fig. 3, a kind of vacuum cleaner brush DC electric fan that the utility model discloses, comprise fan housing 10, DC brushless motor 20, movable vane wheel 30, determine impeller 40, control panel 50 and bonnet 60, after fan housing 10 and bonnet 60 are assembled, air channel is formed in it, DC brushless motor 20 is positioned at bonnet 60, take turns 30 for driving movable vane to rotate, movable vane wheel 30 and determine impeller 40 and pass through rotating shaft 70 and be connected with DC brushless motor 20, i.e. movable vane wheel 30 and determine impeller 40 and be fixedly installed in this rotating shaft 70, and movable vane takes turns 30 with this rotating shaft 70 for running shaft, movable vane wheel 30 and determine impeller 40 and be positioned at fan housing 10.Preferably, fan housing 10 and movable vane take turns gap 12 between 30 between 0.3 ~ 0.5mm, play better seal action, improve the working efficiency of electric fan.
Particularly, fan housing 10 is provided with intake grill 11, for sucking air in fan housing 10.DC brushless motor 20 comprises stator, external rotor and base 21, and external rotor comprises motor housing 22 and integrated type magnet ring 23, and motor housing 22 can adopt steel plate stretching to form, and offers vent hole 26 bottom it, as shown in Figure 3; Magnet ring 23 is fixedly mounted on motor housing 22; The staor winding 25 that stator comprises stator iron core 24 and is wound on stator iron core 24, base 21 and stator iron core 24 phase interference fit, preferably, the material of base 21 can adopt aluminium or copper, is conducive to the heat of staor winding 25 to pass.And external rotor can adopt weighting procedure dynamic balancing, balance clay can be added in magnet ring 23 both ends or one end.
Due to motor employing is integrated type magnet ring, like this when motor High Rotation Speed, the effect of magnetic pole centrifugal force shows as the small elastomeric radial of magnet ring together with motor housing, can not produce to make because of centrifugal force that permanent magnet is cracked to come off, and causes motor damage and Problem of Failure.
Preferably, the rotating shaft 70 of motor be provided with annular knurl with the place of being connected of motor housing 22 or play muscle 71, can make to be connected between rotating shaft 70 with motor housing 22 more firm like this, be more suitable for high speed operation, the rotating speed of motor of the present utility model effectively can run at 30000 ~ 80000 revs/min.During concrete enforcement, motor housing 22 is connected with rotating shaft 70 and can connects with copper die 74 transition, also can directly connect.
And the abutting end car that rotating shaft 70 and movable vane take turnss 30 has the tapering 73 of 3 ~ 5 degree, length is 4 ~ 5mm, and such tapering plays leading role when press-fiting movable vane and taking turns 30, ensure movable vane take turns 30 press-fit quality, avoid generation vibration & noise.
Rotating shaft 70 is also installed with the bearing 72 between base 21 and rotating shaft 70, and fix with glue between bearing 72 and rotating shaft 70, also to fix with glue equally between bearing 72 with base 21, avoid motor in high speed operation process, relative movement is there is between rotating shaft 70 and bearing 72 or between bearing 72 and base 21, the wearing and tearing of rotating shaft 70 and bearing 72 can be accelerated, and produce ear-piercing noise.
Control panel 50 is installed on to be determined between impeller 40 and DC brushless motor 20, and control panel 50 is provided with vent hole (not shown) equally, in addition, the utility model is in the circuit design of control panel 50, adopt position-sensor-free drived control mode, soft start, avoids producing excessive rush of current during electric motor starting.
Fan housing 10 is communicated with formation two air channels with in bonnet 60, article one, air channel is communicated with fan housing 10 inside and DC brushless motor 20 inner space, forming cooling air channel 80, for taking away device for power switching and the interior heat produced of motor 20 of control panel 50, playing the effect of cooling; Another air channel is then be communicated with that fan housing 10 is inner, space between DC brushless motor shell 22 and bonnet 60, forms absorbing sound and lowering noise air channel 90, forms a layer of air stream, play the effect of absorbing sound and lowering noise while cooling motor shell 22.
Particularly, during work, air sucks from the intake grill 11 of fan housing 10, air blows out from determining impeller 40 air channel by movable vane wheel 30 backward, air is divided into two-part, a part blow to be placed in the control panel 50 determined between impeller 40 and motor 20 device for power switching on, heat on device for power switching is taken away, it is inner that vent hole simultaneously in the middle of control panel 50 enters motor 20, vent hole on gap and motor housing 22, through the stator in external rotor, the heat that stator iron core 24 and staor winding 25 produce is taken away, reduce the temperature of staor winding 25.
Another part then flows through between motor housing 22 and bonnet 60, forms a layer of air stream, play the effect of absorbing sound and lowering noise while cooling motor shell 22.
In addition, DC brushless motor of the present utility model adopts electric brake that external rotor is stopped rapidly, and by energy feedback to battery, plays energy-conservation effect; Motor runs a point multiple power gear, and typically two gears, can select different gears as required, extend the service time that battery charges at every turn; Motor has battery saving mode, when not working, not current sinking, avoid motor for a long time need not, the electric energy of battery is exhausted, causes battery failure.
Technology contents of the present utility model and technical characteristics have disclosed as above; but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from the utility model spirit based on teaching of the present utility model and announcement; therefore; the utility model protection domain should be not limited to the content that embodiment discloses; and various do not deviate from replacement of the present utility model and modification should be comprised, and contained by present patent application claim.
Claims (10)
1. a vacuum cleaner brush DC electric fan, it is characterized in that: comprise fan housing, DC brushless motor, movable vane is taken turns, determine impeller and bonnet, air channel is formed in described fan housing and bonnet, described DC brushless motor is positioned at described bonnet, described movable vane wheel with determine impeller and be connected with described DC brushless motor by rotating shaft, and both are arranged in described fan housing, described fan housing is provided with intake grill, in described fan housing, air channel forms with described DC brushless motor interior connection the air channel that lowers the temperature, air channel in described fan housing, described DC brushless motor shell is communicated with the air channel between described bonnet and forms absorbing sound and lowering noise air channel.
2. vacuum cleaner brush DC electric fan according to claim 1, is characterized in that, described electric fan also comprises and is installed on the described control panel determined between impeller and DC brushless motor.
3. vacuum cleaner brush DC electric fan according to claim 1 and 2, it is characterized in that, described DC brushless motor comprises stator and external rotor, described external rotor comprises described motor housing and integrated type magnet ring, described magnet ring is fixedly mounted on described motor housing, and described stator comprises stator iron core and is wound on the staor winding on described stator iron core.
4. vacuum cleaner brush DC electric fan according to claim 3, is characterized in that, described motor also comprises the base with described stator iron core phase interference fit.
5. vacuum cleaner brush DC electric fan according to claim 1 and 2, is characterized in that, described fan housing and described movable vane take turns between gap be 0.3 ~ 0.5mm.
6. vacuum cleaner brush DC electric fan according to claim 1 and 2, is characterized in that, the rotating shaft of described motor is provided with annular knurl with the place of being connected of described shell or plays muscle.
7. vacuum cleaner brush DC electric fan according to claim 1 and 2, is characterized in that, the installation abutting end car that described rotating shaft and described movable vane are taken turns has the tapering of 3 ~ 5 degree, and length is 4 ~ 5mm.
8. vacuum cleaner brush DC electric fan according to claim 4, is characterized in that, described rotating shaft is also installed with the bearing between described base and described rotating shaft.
9. vacuum cleaner brush DC electric fan according to claim 8, is characterized in that, gluing fixing between described bearing and described rotating shaft, between described bearing and described base.
10. vacuum cleaner brush DC electric fan according to claim 2, is characterized in that, described control panel and described motor housing are provided with vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188510.6U CN204591719U (en) | 2015-03-31 | 2015-03-31 | Vacuum cleaner brush DC electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188510.6U CN204591719U (en) | 2015-03-31 | 2015-03-31 | Vacuum cleaner brush DC electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591719U true CN204591719U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520188510.6U Active CN204591719U (en) | 2015-03-31 | 2015-03-31 | Vacuum cleaner brush DC electric fan |
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| CN (1) | CN204591719U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105917988A (en) * | 2016-06-20 | 2016-09-07 | 常州格力博有限公司 | Chain saw |
| CN108736648A (en) * | 2018-08-01 | 2018-11-02 | 苏州工业园区星德胜电机有限公司 | Motor of dust collector component |
| CN109713813A (en) * | 2019-02-02 | 2019-05-03 | 沈阳工大电机有限公司 | A kind of novel double outer cold external rotor permanent magnet synchronous machines |
| CN112436637A (en) * | 2020-12-03 | 2021-03-02 | 江苏苏美达五金工具有限公司 | Brushless motor with outer rotor structure for cleaning machine |
-
2015
- 2015-03-31 CN CN201520188510.6U patent/CN204591719U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105917988A (en) * | 2016-06-20 | 2016-09-07 | 常州格力博有限公司 | Chain saw |
| CN108736648A (en) * | 2018-08-01 | 2018-11-02 | 苏州工业园区星德胜电机有限公司 | Motor of dust collector component |
| CN109713813A (en) * | 2019-02-02 | 2019-05-03 | 沈阳工大电机有限公司 | A kind of novel double outer cold external rotor permanent magnet synchronous machines |
| CN112436637A (en) * | 2020-12-03 | 2021-03-02 | 江苏苏美达五金工具有限公司 | Brushless motor with outer rotor structure for cleaning machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |