CN107355392A - A kind of electrodynamic type centrifugal blower for being used to blow - Google Patents

A kind of electrodynamic type centrifugal blower for being used to blow Download PDF

Info

Publication number
CN107355392A
CN107355392A CN201710611149.7A CN201710611149A CN107355392A CN 107355392 A CN107355392 A CN 107355392A CN 201710611149 A CN201710611149 A CN 201710611149A CN 107355392 A CN107355392 A CN 107355392A
Authority
CN
China
Prior art keywords
yoke
central shaft
impeller
centered
annulus
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.)
Pending
Application number
CN201710611149.7A
Other languages
Chinese (zh)
Inventor
丁建峰
崔翔峰
陈超
刘欢
徐凯
郑礼龙
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.)
CHUZHOU FLURIDA MACHINERY ELECTRONIC Co Ltd
Original Assignee
CHUZHOU FLURIDA MACHINERY ELECTRONIC 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 CHUZHOU FLURIDA MACHINERY ELECTRONIC Co Ltd filed Critical CHUZHOU FLURIDA MACHINERY ELECTRONIC Co Ltd
Priority to CN201710611149.7A priority Critical patent/CN107355392A/en
Publication of CN107355392A publication Critical patent/CN107355392A/en
Pending legal-status Critical Current

Links

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
    • 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
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • 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
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0646—Details of the stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Landscapes

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

Abstract

The invention discloses a kind of electrodynamic type centrifugal blower for being used to blow, including fan assembly, the impeller portion by rotating generation air stream and motor, the motor to be connected with the impeller portion and impeller portion is rotated around central shaft Z1；The motor is external-rotor motor, and the motor has the rotor portions as the stator department of fixing assembly and as rotary assembled body, and the rotor portions are supported by Bearning mechanism, and can be rotated in relative stator portion centered on central shaft Z1.Impeller portion can be firmly installed on yoke by the present invention, it can prevent from causing impeller damaged because of thermal deformation, change existing rotating shaft and the medial surface fixed form of the cylindrical portion of yoke central portion, rotating shaft is firmly installed on the medial surface of the cylindrical portion of impeller central portion, meets actual operation requirements.

Description

A kind of electrodynamic type centrifugal blower for being used to blow
Technical field
The present invention relates to a kind of electrodynamic type centrifugal blower for being used to blow, belong to fan component technical field.
Background technology
The structure for the centrifugal fan type fan assembly that existing axial admission is radially vented is as follows, that is, is provided with such leaf Wheel：With multiple blades along the circumferential array centered on rotary shaft, at the cup-shaped position of the central portion located at the impeller, pressure Enter and metal yoke is installed, the yoke is cylindrical, has excitation magnet, and the yoke in the medial surface of the yoke With magnetic.According to this structure, impeller can rotate around rotary shaft, and in this impeller, the lateral surface at cup-shaped position leads to Cross connecting portion and be configured with multiple blades, it is integrally formed by synthetic resin at cup-shaped position and multiple blades, in multiple blades Side, formed with annulus between the lateral surface at multiple blades and cup-shaped position.
In existing fan assembly, by being pressed into, being bonded or caulking, by the lateral surface of cylindric yoke and impeller is located at The medial surface of the cylindrical portion of central portion is fixed；By being pressed into, being bonded or caulking, by rotating shaft and the cylindrical portion located at yoke central portion Medial surface fix.But when being pressed into, being bonded cylindric yoke and the medial surface fixation of the cylindrical portion of impeller central portion, deposit In can not impeller is firm be arranged on yoke.In the case where being fixed using caulking, it is necessary to form holding section and caulking work Industry, operating efficiency is caused to reduce.And the cup-shaped position of impeller is formed by synthetic resin, when being pressed into yoke in its medial surface, because Stress is pressed into, impeller can rupture sometimes, and particularly in more large-scale pressure fan, the damaged possibility of impeller is larger.But such as Fruit reduces pressing-in force, then yoke can not be firmly installed on impeller, thus yoke is possible to come off from impeller；The opposing party Face, when using this pressure fan at low ambient temperatures, because the impeller of resin-made shrinks greatly than metal yoke, therefore impeller Installation portion nearby be possible to rupture；When press-in, bonding rotating shaft and the medial surface of the cylindrical portion of yoke central portion are fixed, exist It can not be arranged on yoke rotating shaft is firm, in the case where being fixed using caulking, it is necessary to form holding section and caulking operation, Operating efficiency is caused to reduce.
The content of the invention
The present invention is exactly in view of the deficienciess of the prior art, providing a kind of electrodynamic type centrifugal blower for being used to blow, energy It is enough that impeller portion is firmly installed on yoke, it can prevent from causing impeller damaged because of thermal deformation, change existing rotating shaft and yoke The medial surface fixed form of the cylindrical portion of iron central portion, rotating shaft is firmly installed in the medial surface of the cylindrical portion of impeller central portion On, meet actual operation requirements.
To solve the above problems, the technical solution used in the present invention is as follows：
A kind of electrodynamic type centrifugal blower for being used to blow, including fan assembly, the impeller portion by rotating generation air stream and electricity Motivation, the motor are connected with the impeller portion and impeller portion is rotated around central shaft Z1；
The motor is external-rotor motor, and the motor has as the stator department of fixing assembly and as rotation The rotor portions of assembly, the rotor portions are supported by Bearning mechanism, and can be revolved in relative stator portion centered on central shaft Z1 Turn；
The stator department includes each several part that support portion is used to keep stator department, and the support portion includes bearing, and the bearing is in Cylinder-like structure centered on central shaft Z1, the bearing pass through injection moulding integrated molding, the bearing tool with the support portion There are annular knurl, fluting or ledge structure, and the spring of precompressed is provided with bearing top；
The stator department also includes armature and circuit substrate, and the armature is arranged on the support portion（311）Periphery, the electricity Base board is arranged on the downside of the armature and is connected with armature；
The rotor portions also include metal yoke, cylindric magnet and axle, and the yoke is in centered on central shaft Z1 Cylinder-like structure, the yoke has a magnetic conductivity, the cylindric magnet tool permanent magnetism, the cylindric magnet installation On the medial surface of yoke and relative with armature, the axle protrudes from the downward side in the top in impeller portion, the outside of the yoke with The cylindric medial surface of impeller portion central portion passes through injection moulding integrated molding；
The circuit substrate provides driving current to armature, to be produced between the armature and the magnet of cylindrical shape with center Torque centered on axle Z1, the axle are rotated with the impeller portion and yoke centered on central shaft Z1；
The impeller portion also has the annulus and more blades of the tabular from yoke towards outer expandable, and the blade is with yoke Leave and arranged along the circumferentially spaced equal intervals centered on central shaft Z1 laterally.
As the improvement of above-mentioned technical proposal, the annulus includes the circular position of inner edge side and multiple lower flange portions One, the yoke includes lateral surface and end, the circular position along the whole circumference centered on central shaft Z1 with The abutting of the lateral surface of yoke, the end of the yoke abut with the multiple lower flange portions one of the annulus, the flange part The one circumferentially spaced equal intervals configuration centered on central shaft Z1；The annulus also includes the outer of cylindrical portion and cylindrical portion Side one, lateral surface two and flange part two, a circular trough, the circle are provided between the lateral surface one and the lateral surface two Groove center overlapping of axles is in central shaft Z1, circumferentially spaced equal intervals configuration of the flange part two centered on central shaft Z1.
As the improvement of above-mentioned technical proposal, the annulus in the impeller portion also includes medial surface, and the end of the axle leads to Medial surface of the injection form plastic packaging in impeller portion annulus is crossed, the end of the axle is using structure sides such as annular knurl, groove, boss Formula, the annulus also include the flange part three of the circumferentially spaced equal intervals configuration centered on central shaft Z1.
Compared with prior art, implementation result of the invention is as follows by the present invention：
The fan assembly of other preferred embodiments based on the present invention, the medial surface of the cylindrical portion of impeller central portion and yoke it is outer Side continuously contacts, and a circular groove between the lateral surface of the cylindrical portion of impeller central portion and impeller portion be present.According to this Kind structure, it can prevent from causing impeller portion damaged because of thermal deformation or press-in stress, yoke and the cylindrical portion of impeller central portion The lateral surface installation of medial surface and yoke can by being pressed into, be bonded or integrated injection moulding technique realizes；
Rotating shaft is arranged on the medial surface of the cylindrical portion of impeller central portion, is realized using integrated through injection molding chemical industry skill, and the rotating shaft is because of tool Standby following aspect feature：With the shaft contacts end of the cylindric medial surface installation of impeller central portion, using annular knurl, groove, convex The frame modes such as platform；According to this structure, can prevent from causing impeller portion damaged because of thermal deformation or press-in stress.
Brief description of the drawings
Fig. 1 is the structural section figure for representing the fan assembly that embodiment is related to；
Fig. 2 is the upward view for representing yoke, axle and ring；
Fig. 3 is the top view for representing yoke, axle and ring；
Fig. 4 is the sectional view for representing yoke, axle and ring.
Embodiment
Illustrate present disclosure below in conjunction with specific embodiments.
As shown in Figures 1 to 4, it is a kind of electrodynamic type centrifugal fan structure schematic diagram for being used to blow of the present invention.
Fig. 1 of the present invention is the structure chart for representing the centrifugal fan type fan assembly 1 that embodiment of the present invention is related to, and represents edge The longitudinal section of plane cut-out comprising central shaft Z1.
As shown in figure 1, fan assembly 1 has：The impeller 2 of air stream is produced by rotating；And motor 3, its with Impeller portion 2 connects, and impeller portion 2 is rotated around central shaft Z1；
Motor 3 is external-rotor motor, is had as the stator department 31 of fixing assembly and turning as rotary assembled body Sub-portion 32, rotor portions 32 are supported by Bearning mechanism described later, and can be rotated in relative stator portion 31 centered on central shaft Z1；
Stator department 31 has support portion 311, and for keeping each several part of stator department 31, support portion 311 has bearing 312, the axle Hold 312 and pass through injection moulding integrated molding, bearing with support portion 311 in the substantially cylindrical shape centered on central shaft Z1, bearing 312 312 have annular knurl, fluting or step-feature, and the spring 313 of precompressed is provided with the top of bearing 312；
Stator department 31 also has：Armature 314, it is installed on the periphery in support portion 311, and circuit substrate 315, and it is arranged on armature 314 downside is simultaneously connected with armature 314；
Rotor portions 32 have：Metal yoke 321, in the cylindrical shape centered on central shaft Z1, the yoke 321, which has, leads for it Magnetic, cylindric magnet 322, there is permanent magnetism, it is arranged on the medial surface 3211 of yoke 321, relative with armature 314；With And axle 323, it is protruded from the 211 downward side of top in impeller portion 2, the lateral surface 3212 of yoke 321 and the circle of the central portion of impeller portion 2 The injection moulding integrated molding of medial surface 212 of tubular；
Control is supplied to the driving current of armature 314 through circuit substrate 315, so as in armature 314 and excitation between magnet 322 Produce torque centered on central shaft Z1, thus axle 323 and impeller portion 2 on yoke 321 and yoke 321 together with Rotated centered on central shaft Z1；
Impeller portion 2 has：From yoke 321 towards the annulus 21 of the tabular of outer expandable；And more blades 22, they are from yoke Iron 321 leaves laterally, and is arranged along the circumferentially spaced equal intervals centered on central shaft Z1.
Fig. 2 and Fig. 3 is the upward view of annulus 21 and top view in the impeller portion 2 on the yoke 321 for represent rotor portions 32；Figure 4 be to represent the sectional view after cutting off yoke 321 and annulus 21 along the position of the A-A in Fig. 2.
As shown in Figures 2 to 4, the circular position 2121 of the inner edge side of annulus 21, along using central shaft Z1 in The whole circumference of the heart and the abutting of the lateral surface 3212 of yoke 321, the end 3213 and more than 21 individual bottom of annulus of yoke 321 are convex Edge 1 abuts, circumferentially spaced equal intervals configuration of the flange part 1 centered on central shaft Z1.Annulus 21 A circular trough 215 is provided between the lateral surface 1 and lateral surface 2 217 of cylindrical portion 212, the central shaft of circular trough 215 coincides with Central shaft Z1；Circumferentially spaced equal intervals configuration of the flange part 2 216 centered on central shaft Z1.
Wherein, the one end 3231 of axle 323 is by being molded medial surface 213 of the form plastic packaging in the annulus 21 of impeller portion 2, axle 3231 ends are using frame modes such as annular knurl, groove, boss.The flange part 3 218 of annulus 21 is centered on central shaft Z1 Circumferentially spaced equal intervals configuration.
As described above, in impeller portion 2, the circular position 2121 of the inner edge side of annulus 21, along with central shaft Whole circumference and the abutting of the lateral surface 3212 of yoke 321 centered on Z1, the lateral surface one of the cylindrical portion 212 of annulus 21 A circular trough 215 is provided between 2122 and lateral surface 2 217, the central shaft of circular trough 215 coincides with central shaft Z1.Therefore, even if In fan assembly 1 at low ambient temperatures in use, the annulus 21 of resin-made shrinks bigger situation than metal yoke 321 Under, due to being provided with a circular trough 215 between the lateral surface 1 and lateral surface 2 217 of the cylindrical portion 212 of annulus 21, have Deformable space is produced, so the stress on annulus 21 in caused circumference can be reduced, can be prevented due to thermal deformation（It is special It is not thermal contraction）The breakage in caused impeller portion 2.
Specifically, the one end 3231 of axle 323 is by being molded medial surface 213 of the form plastic packaging in the annulus 21 of impeller portion 2, because This, even in fan assembly 1 at low ambient temperatures in use, the annulus 21 of resin-made shrinks bigger feelings than metal axle Under condition, because the end of axle 3231 is using frame modes such as annular knurl, groove, boss, it can prevent due to leaf caused by cold and hot deformation The breakage of wheel portion 2 and coming off for axle 323.
Above content is detailed description made for the present invention in conjunction with specific embodiments, it is impossible to assert that the present invention is specific real Apply and be only limitted to these explanations.For those skilled in the art, before present inventive concept is not departed from Put, some simple deduction or replace can also be made, should all be considered as belonging to the scope of protection of the invention.

Claims (3)

  1. A kind of 1. electrodynamic type centrifugal blower for being used to blow, it is characterised in that：Including fan assembly（1）, pass through rotate produce it is empty The impeller portion of air-flow（2）And motor（3）, the motor（3）With the impeller portion（2）Connect and make impeller portion（2）In Mandrel Z1 rotates；
    The motor（3）It is external-rotor motor, the motor（3）With the stator department as fixing assembly（31） With the rotor portions as rotary assembled body（32）, the rotor portions（32）It is to be supported by Bearning mechanism, and can be with central shaft Z1 Centered on relative stator portion（31）Rotation；
    The stator department（31）Including support portion（311）For keeping stator department（31）Each several part, the support portion（311）Bag Include bearing（312）, the bearing（312）In the cylinder-like structure centered on central shaft Z1, the bearing（312）With the machine Portions（311）By injection moulding integrated molding, the bearing（312）With annular knurl, fluting or ledge structure, and in bearing（312） Top is provided with the spring of precompressed（313）；
    The stator department（31）Also include armature（314）And circuit substrate（315）, the armature（314）Installed in the support Portion（311）Periphery, the circuit substrate（315）Installed in the armature（314）Downside and and armature（314）Connection；
    The rotor portions（32）Also include metal yoke（321）, cylindric magnet（322）And axle（323）, the yoke （321）In the cylinder-like structure centered on central shaft Z1, the yoke（321）With magnetic conductivity, the cylindric magnet （322）Has permanent magnetism, the cylindric magnet（322）Installed in yoke（321）Medial surface（3211）Upper and and armature （314）Relatively, the axle（323）From impeller portion（2）Top（211）Downward side protrudes, the yoke（321）Outside （3212）With the impeller portion（2）The cylindric medial surface of central portion（212）Pass through injection moulding integrated molding；
    The circuit substrate（315）To armature（314）Driving current is provided, so as in the armature（314）With the magnetic of cylindrical shape Iron（322）Between produce torque centered on central shaft Z1, the axle（323）With the impeller portion（2）And yoke（321） Rotated centered on central shaft Z1；
    The impeller portion（2）Also have from yoke（321）Towards the annulus of the tabular of outer expandable（21）And more blades （22）, the blade（22）With yoke（321）Leave laterally and along circumferentially spaced equal intervals centered on central shaft Z1 Arrangement.
  2. A kind of 2. electrodynamic type centrifugal blower for being used to blow according to claim 1, it is characterised in that：The annulus（21） Circular position including inner edge side（2121）With multiple lower flange portions one（214）, the yoke（321）Including lateral surface （3212）And end（3213）, the circular position（2121）Along the whole circumference and yoke centered on central shaft Z1 （321）Lateral surface（3212）Abutting, the yoke（321）End（3213）With the annulus（21）Multiple bottoms are convex Edge one（214）Abut, the flange part one（214）Circumferentially spaced equal intervals configuration centered on central shaft Z1；Institute State annulus（21）Also include cylindrical portion（212）And cylindrical portion（212）Lateral surface one（2122）, lateral surface two（217）It is and convex Edge two（216）, the lateral surface one（2122）With the lateral surface two（217）Between be provided with a circular trough（215）, the circle Shape groove（215）Central shaft coincides with central shaft Z1, the flange part two（216）Circumferentially spaced phase centered on central shaft Z1 Configure at equal intervals.
  3. A kind of 3. electrodynamic type centrifugal blower for being used to blow according to claim 1, it is characterised in that：The impeller portion（2） Annulus（21）Also include medial surface（213）, the axle（323）End（3231）By being molded form plastic packaging in impeller portion （2）Annulus（21）Medial surface（213）, the axle（323）End（3231）Using structure sides such as annular knurl, groove, boss Formula, the annulus（21）Also include the flange part three of the circumferentially spaced equal intervals configuration centered on central shaft Z1 （218）.
CN201710611149.7A 2017-07-25 2017-07-25 A kind of electrodynamic type centrifugal blower for being used to blow Pending CN107355392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710611149.7A CN107355392A (en) 2017-07-25 2017-07-25 A kind of electrodynamic type centrifugal blower for being used to blow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710611149.7A CN107355392A (en) 2017-07-25 2017-07-25 A kind of electrodynamic type centrifugal blower for being used to blow

Publications (1)

Publication Number Publication Date
CN107355392A true CN107355392A (en) 2017-11-17

Family

ID=60285386

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710611149.7A Pending CN107355392A (en) 2017-07-25 2017-07-25 A kind of electrodynamic type centrifugal blower for being used to blow

Country Status (1)

Country Link
CN (1) CN107355392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109958629A (en) * 2017-12-22 2019-07-02 日本电产株式会社 Pressure fan
CN110206755A (en) * 2018-02-28 2019-09-06 日本电产株式会社 Centrifugal fan and cooling device comprising the centrifugal fan

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002106493A (en) * 2000-09-29 2002-04-10 Toshiba Corp Fan
CN1896548A (en) * 2005-07-15 2007-01-17 日本电产株式会社 Fan assembly
CN203321860U (en) * 2012-05-29 2013-12-04 美蓓亚株式会社 Centrifuge type blower
CN104295530A (en) * 2013-07-18 2015-01-21 日本电产株式会社 Blower fan and electronic device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002106493A (en) * 2000-09-29 2002-04-10 Toshiba Corp Fan
CN1896548A (en) * 2005-07-15 2007-01-17 日本电产株式会社 Fan assembly
CN203321860U (en) * 2012-05-29 2013-12-04 美蓓亚株式会社 Centrifuge type blower
CN104295530A (en) * 2013-07-18 2015-01-21 日本电产株式会社 Blower fan and electronic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109958629A (en) * 2017-12-22 2019-07-02 日本电产株式会社 Pressure fan
CN110206755A (en) * 2018-02-28 2019-09-06 日本电产株式会社 Centrifugal fan and cooling device comprising the centrifugal fan
CN110206755B (en) * 2018-02-28 2021-10-12 日本电产株式会社 Centrifugal fan and cooling device comprising same

Similar Documents

Publication Publication Date Title
CN203321860U (en) Centrifuge type blower
US8568110B2 (en) Blower fan and method of manufacturing the same
JP3388470B2 (en) Axial blower
US8157513B2 (en) Axial flow fan
CN102465902B (en) Air Blast fan
US20120177515A1 (en) Mixed flow fan
JPS62693A (en) Radial-fan with driving motor coaxial to impeller made of synthetic resin
CN104795935B (en) Motor
US8113775B2 (en) Axial flow fan
US8449268B2 (en) Fan and method for manufacturing the same
CN102454620A (en) Air supply fan
US9303657B2 (en) Fan and motor bearing heat dissipation structure thereof
JP5630143B2 (en) Centrifugal fan and self-propelled robot equipped with centrifugal fan
US10014755B2 (en) Component for an electric machine
CN107355392A (en) A kind of electrodynamic type centrifugal blower for being used to blow
CN108306453B (en) Motor and blower
CN101599682B (en) Motor device and manufacturing method thereof
US9917488B2 (en) Motor including removable weights for balancing
US20120251321A1 (en) Impeller and centrifugal fan
KR20170077516A (en) Rotor assembly and motor including the same
CN208380960U (en) Impeller and air supply device
CN109654043B (en) Fan with cooling device
US20120171024A1 (en) Bearing holding structure and fan module using same
JP2009250158A (en) Bower fan
CN202833224U (en) Centrifugal fan

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20171117