CN201730841U - Fan, hand drier and dust collector using same - Google Patents

Fan, hand drier and dust collector using same Download PDF

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Publication number
CN201730841U
CN201730841U CN2010201401730U CN201020140173U CN201730841U CN 201730841 U CN201730841 U CN 201730841U CN 2010201401730 U CN2010201401730 U CN 2010201401730U CN 201020140173 U CN201020140173 U CN 201020140173U CN 201730841 U CN201730841 U CN 201730841U
Authority
CN
China
Prior art keywords
blower fan
motor
impeller
magnet
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201401730U
Other languages
Chinese (zh)
Inventor
贺万梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Electric Shenzhen Co Ltd
Original Assignee
Johnson Electric Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Electric Shenzhen Co Ltd filed Critical Johnson Electric Shenzhen Co Ltd
Priority to CN2010201401730U priority Critical patent/CN201730841U/en
Application granted granted Critical
Publication of CN201730841U publication Critical patent/CN201730841U/en
Priority to JP2011001273U priority patent/JP3168007U/en
Priority to DE202011003752U priority patent/DE202011003752U1/en
Priority to US13/048,484 priority patent/US20110229350A1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48—Drying by means of hot air
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The utility model discloses a fan and a hand drier and a dust collector using the same. According to one embodiment of the utility model, the fan includes an impeller, a brushless motor for driving the impeller, and a housing for receiving the impeller and the motor therein, wherein the motor has an inner rotator and an outer stator; the rotator of the motor includes a rotating shaft, a rotator iron core fixed to the rotating shaft, a ring magnet fixed on an outer surface of the rotator iron core, and a protective cover for covering the outer surface of the ring magnet. The embodiment of the utility model can improve the reliability of the motor in high-speed operation, thereby improving the reliability of the fan.

Description

The hand-drying device and the vacuum cleaner of blower fan, the described blower fan of use
Technical field
The utility model relates to the blower fan that is driven by brushless electric machine.
Background technique
Blower fan generally includes housing and is installed in housing interior motor and impeller.Housing is provided with air inlet and outlet, and impeller produces high pressure draught and goes out from outlet under the driving of motor.Existing blower fan often adopts the motor of internal rotor type, and a plurality of magnet are evenly arranged on the excircle of rotor of stator inboard, and by adhesive in rotor core.When motor during, may cause magnet cracked owing to Bond can not overcome centrifugal force at high speed operation.
The model utility content
The utility model provides a kind of blower fan, comprise impeller, be used to drive the brushless electric machine of described impeller and shell with ccontaining described impeller and motor in it, described motor has internal rotor, outer stator structure; The protecting jacket that the rotor of described motor comprises rotating shaft, is fixed in the rotor core of described rotating shaft, is fixed in the ring magnet of described rotor core outer surface and covers described ring magnet outer surface.
Optionally, described protecting jacket is the stainless steel sleeve.
Optionally, described magnet is Agglutinate neodymium-iron-boron magnet.
Optionally, described magnet is Agglutinate neodymium-iron-boron magnet.
Optionally, described rotor comprises that also two gimbals are individually fixed in two axial end faces of described ring magnet.
Optionally, between described impeller and motor, has air-flow that a diffuser will the flow out described impeller described motor that leads.
Optionally, described impeller comprises cover plate, base plate and a plurality of blade, each blade both sides all has the installation protuberance, is respectively equipped with and installs the corresponding mounting hole of protuberance on described cover plate and the base plate, and the installation protuberance is connected in mounting hole makes vanes fixed in cover plate and base plate.
Embodiment's of the present utility model beneficial effect is: the outer circumferential face at ring magnet is coated with protecting jacket, can avoid magnet cracked owing to the high speed rotating of rotor; Further, the protecting jacket that uses stainless steel sheets to make can reduce the magnetic circuit loss, can guarantee that again mechanical strength is to support ring magnet with higher speed rotation; Further, use Agglutinate neodymium-iron-boron to make ring magnet, can save cost.Therefore embodiment of the present utility model can improve the reliability of motor when high speed operation, and then improves the reliability of blower fan, and can reduce the cost of blower fan.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet institute's accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Fig. 1 is the perspective view according to the utility model one embodiment's blower fan;
Fig. 2 is the perspective view of the internal structure of blower fan shown in Figure 1;
Fig. 3 is the forward view of the internal structure of blower fan shown in Figure 1;
Fig. 4 is the bottom view of the internal structure of blower fan shown in Figure 1;
Fig. 5 is the exploded view of the rotor of blower fan shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
Referring to figs. 1 to Fig. 5, for example can be used for hand dryer, vacuum cleaner etc. according to an embodiment's of the present utility model blower fan 100, comprise impeller 200, diffuser 300, motor 400 and housing.
Housing comprises impeller housing 510 of accommodating impeller 200 and diffuser 300 and the motor housing 520 of accommodating motor 400.Form opening on the impeller housing 510 as air inlet; Be formed with several openings on the motor housing 520 as air outlet slit, and portion forms the rotor bearing 443 of bearing accommodation section to accommodate motor 400 in the enclosure.
Impeller 200 is driven by motor 400, produces the suction that sucks air; Impeller 200 comprises cover plate 220, base plate 240 and a plurality of blade 260, and cover plate 220 has disc-shape, is provided with air suction inlet 222 at the lug boss place at center.A plurality of blades 260 are along the circumferential direction evenly arranged between cover plate 220 and base plate 240, form a plurality of air flues, and the air that is inhaled into by air suction inlet 222 is discharged to the outside of impeller 200 by high pressure along a plurality of air flues.Each blade 260 is curved, and its both sides are connected with base plate 240 with cover plate 220 respectively.Blade 260 both sides all have several protuberance 262 are installed, and are respectively equipped with and install protuberance 262 corresponding mounting holes on cover plate 220 and the base plate 240, and installation protuberance 262 is connected in mounting hole makes vanes fixed in cover plate 220 and base plate 240.Base plate 240 is relative with cover plate 220, has the disc-shape corresponding to cover plate 220.Establish the erection column of mounting hole in the center of base plate 240 has, impeller 200 can be fixedly installed to the rotating shaft of motor 400 by erection column, with the rotating shaft rotation with motor.
Diffuser 300 increases are discharged to the pressure of impeller 200 air outside and guide air flows to arrive motor 400.With reference to figure, the main body 320 of diffuser 300 has disc-shape, and its diameter is roughly suitable with the internal diameter of impeller housing 510 greater than the diameter of impeller 200.The center of main body 320 has the rotating shaft of perforation power supply machine and passes and the rotor bearing 445 of bearing accommodation section to accommodate motor 400.Diffuser body 320 is formed with a plurality of diffuser vanes 340 towards a side of impeller 200, edge section in main body 320 is along the circumferential direction arranged at interval, space between each diffuser vane 340 and impeller housing 510 inwalls forms diffusion admittance 342, and the front end 344 of diffuser vane 340 forms the inlet of diffusion admittance.Diffuser body 320 is formed with a plurality of guide plates 360 away from a side of impeller 200, forms guiding channel 362 between the adjacent guide plate 360.Also be formed with opening 380 on the diffuser body 320 diffusion admittance 342 is communicated with guiding channel 362, be directed to motor 400 thereby make air enter guiding channel 362 from diffusion admittance 342 by opening 380.Also being formed with some mounting holes 324 on the diffuser body 320 is used for diffuser 300 is fixedly installed to motor housing 520.
In the present embodiment, motor 400 for example can use the brushless electric machine with internal rotor, outer stator structure.Stator 420 is fixedly installed in the motor housing 520, comprises stator core and coil (not shown).Stator core is piled up along rotor axial by most laminations and is formed, and comprises a plurality of (in the present embodiment being 6) salient pole and the stator yoke portion that is provided with along circumference, and coil is wound on the salient pole.Rotor 440 comprises rotating shaft 442, rotor core 444, ring magnet 446, gimbal 441 and the protecting jacket 448 that is used to protect ring magnet 446.The two ends of rotating shaft 442 are rotatably mounted by bearing 443,445.Rotor core 444 is cylindrical body, wherein has been formed centrally perforation, and rotating shaft 442 runs through this perforation and fixing with rotor core 444.Ring magnet 446 for example can be fixed in the outer circumferential face of rotor core 444 by Bond, preferably, ring magnet 446 can be made by Agglutinate neodymium-iron-boron (NdFeB) material, compares with sintered neodymium iron boron material, the cost of Agglutinate neodymium-iron-boron is lower, and then can reduce the cost of blower fan.Certainly, sintered neodymium iron boron material can be realized the ring magnet of present embodiment equally.Gimbal 441 is ring, covers on two axial end faces of ring magnet 446, and its external diameter is substantially equal to the external diameter of ring magnet 446, and the hole at center is passed for rotating shaft 442.The inwall of protecting jacket 448 for example can be fixed in the outer circumferential face of ring magnet 446 and the peripheral edge part of gimbal 441 is used to protect magnet by Bond, and outer wall and stator form air gap; Very high linear velocity can be born in the protecting jacket surface, can avoid magnet cracked owing to the high speed rotating of rotor; Protecting jacket 448 can be made by metallic material, and is preferred, made by thin corrosion resistant plate; can reduce the magnetic circuit loss; can guarantee mechanical strength again, thereby support ring magnet 446 with higher speed when being applied to hand-drying device (as, rotor speed is usually above 2500 rev/mins) rotation.
Embodiment's of the present utility model beneficial effect is: the outer circumferential face at ring magnet is coated with protecting jacket, can avoid magnet cracked owing to the high speed rotating of rotor; Further, the protecting jacket that uses stainless steel sheets to make can reduce the magnetic circuit loss, can guarantee that again mechanical strength is to support ring magnet with higher speed rotation; Further, use Agglutinate neodymium-iron-boron to make ring magnet, can save cost.Therefore embodiment of the present utility model can improve the reliability of motor when high speed operation, and then improves the reliability of blower fan, and can reduce the cost of blower fan.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims (11)

1. blower fan, comprise impeller, be used to drive the brushless electric machine of described impeller and housing with ccontaining described impeller and motor in it, described motor has internal rotor, outer stator structure; It is characterized in that the protecting jacket that the rotor of described motor comprises rotating shaft, is fixed in the rotor core of described rotating shaft, is fixed in the ring magnet of described rotor core outer surface and covers described ring magnet outer surface.
2. blower fan as claimed in claim 1 is characterized in that, described protecting jacket is the metallic sleeve.
3. blower fan as claimed in claim 1 is characterized in that, described protecting jacket is a stainless steel sheets system sleeve.
4. blower fan as claimed in claim 1 is characterized in that, described magnet is Agglutinate neodymium-iron-boron magnet.
5. blower fan as claimed in claim 1 is characterized in that, described magnet is sintered NdFeB magnet.
6. blower fan as claimed in claim 1 is characterized in that, described rotor comprises that also two gimbals are individually fixed in two axial end faces of described ring magnet.
7. blower fan as claimed in claim 1 is characterized in that, has air-flow that a diffuser will the flow out described impeller described motor that leads between described impeller and motor.
8. blower fan as claimed in claim 1, it is characterized in that, described impeller comprises cover plate, base plate and a plurality of blade, each blade both sides all has the installation protuberance, be respectively equipped with and install the corresponding mounting hole of protuberance on described cover plate and the base plate, the installation protuberance is connected in mounting hole makes vanes fixed in cover plate and base plate.
9. as each described blower fan of claim 1 to 8, it is characterized in that the rotating speed of described rotor is greater than 2500 rev/mins.
10. a hand-drying device is characterized in that, described hand-drying device has as each described blower fan of claim 1 to 9.
11. a vacuum cleaner is characterized in that, described dust catcher is just like each described blower fan of claim 1 to 9.
CN2010201401730U 2010-03-22 2010-03-22 Fan, hand drier and dust collector using same Expired - Fee Related CN201730841U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2010201401730U CN201730841U (en) 2010-03-22 2010-03-22 Fan, hand drier and dust collector using same
JP2011001273U JP3168007U (en) 2010-03-22 2011-03-09 Blower
DE202011003752U DE202011003752U1 (en) 2010-03-22 2011-03-10 fan
US13/048,484 US20110229350A1 (en) 2010-03-22 2011-03-15 Blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201401730U CN201730841U (en) 2010-03-22 2010-03-22 Fan, hand drier and dust collector using same

Publications (1)

Publication Number Publication Date
CN201730841U true CN201730841U (en) 2011-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201401730U Expired - Fee Related CN201730841U (en) 2010-03-22 2010-03-22 Fan, hand drier and dust collector using same

Country Status (4)

Country Link
US (1) US20110229350A1 (en)
JP (1) JP3168007U (en)
CN (1) CN201730841U (en)
DE (1) DE202011003752U1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023184A (en) * 2011-09-20 2013-04-03 德昌电机(深圳)有限公司 High-speed airflow generating device and brushless motor thereof
CN103321922A (en) * 2012-03-22 2013-09-25 德昌电机(深圳)有限公司 Air blower, vacuum cleaner and hand drier both provided with same
CN103780021A (en) * 2012-10-24 2014-05-07 德昌电机(深圳)有限公司 Brush motor
CN104622390A (en) * 2015-01-29 2015-05-20 苏州克林威尔电器有限公司 Handheld dust collector using brushless motor
CN105090114A (en) * 2014-05-07 2015-11-25 德昌电机(深圳)有限公司 Diffuser and draught fan applying same
CN105534377A (en) * 2016-01-15 2016-05-04 袁海文 Impeller turbojet body dryer
CN106194786A (en) * 2015-04-30 2016-12-07 德昌电机(深圳)有限公司 Blower fan and include its hand dryer

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CN103929029A (en) * 2014-04-21 2014-07-16 顾善德 Compressor
CN105090067B (en) 2014-04-29 2019-07-16 德昌电机(深圳)有限公司 Blower and hand dryer including it
WO2016078434A1 (en) * 2014-11-20 2016-05-26 江苏美的清洁电器股份有限公司 Dust collector
DE102016211251A1 (en) * 2016-06-23 2017-12-28 Robert Bosch Gmbh Rotor for an electric machine, electric machine with the rotor and manufacturing process for the rotor
JP6887404B2 (en) * 2018-07-13 2021-06-16 ミネベアミツミ株式会社 motor
US20220247270A1 (en) 2021-02-02 2022-08-04 Black & Decker Inc. High-power motor for a body-grip power tool

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023184A (en) * 2011-09-20 2013-04-03 德昌电机(深圳)有限公司 High-speed airflow generating device and brushless motor thereof
CN103321922A (en) * 2012-03-22 2013-09-25 德昌电机(深圳)有限公司 Air blower, vacuum cleaner and hand drier both provided with same
CN103780021A (en) * 2012-10-24 2014-05-07 德昌电机(深圳)有限公司 Brush motor
CN103780021B (en) * 2012-10-24 2018-02-16 德昌电机(深圳)有限公司 Brush motor
CN105090114A (en) * 2014-05-07 2015-11-25 德昌电机(深圳)有限公司 Diffuser and draught fan applying same
CN104622390A (en) * 2015-01-29 2015-05-20 苏州克林威尔电器有限公司 Handheld dust collector using brushless motor
CN106194786A (en) * 2015-04-30 2016-12-07 德昌电机(深圳)有限公司 Blower fan and include its hand dryer
CN106194786B (en) * 2015-04-30 2020-04-10 德昌电机(深圳)有限公司 Fan reaches hand dryer including it
CN105534377A (en) * 2016-01-15 2016-05-04 袁海文 Impeller turbojet body dryer
CN105534377B (en) * 2016-01-15 2018-01-02 袁海文 A kind of dry body machine of impeller vortex-spraying type

Also Published As

Publication number Publication date
DE202011003752U1 (en) 2012-01-24
US20110229350A1 (en) 2011-09-22
JP3168007U (en) 2011-05-26

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110202

Termination date: 20190322

CF01 Termination of patent right due to non-payment of annual fee