US20140134012A1 - Impeller and electric blower having the same - Google Patents

Impeller and electric blower having the same Download PDF

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Publication number
US20140134012A1
US20140134012A1 US13/831,834 US201313831834A US2014134012A1 US 20140134012 A1 US20140134012 A1 US 20140134012A1 US 201313831834 A US201313831834 A US 201313831834A US 2014134012 A1 US2014134012 A1 US 2014134012A1
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US
United States
Prior art keywords
impeller
shaft
electric blower
sleeve
set forth
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.)
Abandoned
Application number
US13/831,834
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English (en)
Inventor
Yong Wan CHO
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.)
Samsung Electro Mechanics Co Ltd
Original Assignee
Samsung Electro Mechanics 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 Samsung Electro Mechanics Co Ltd filed Critical Samsung Electro Mechanics Co Ltd
Assigned to SAMSUNG ELECTRO-MECHANICS CO., LTD. reassignment SAMSUNG ELECTRO-MECHANICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHO, YONG WAN
Publication of US20140134012A1 publication Critical patent/US20140134012A1/en
Abandoned 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • 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
    • F04D29/30—Vanes
    • 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
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/662—Balancing of rotors

Definitions

  • the present invention relates to an impeller and an electric blower having the same.
  • a balancing method of compensating for unbalance of a rotating rotor in a motor structure of a high speed cleaner is performed by assembling and processing a balancing part, which is a component capable of compensating for a balance in the rotating rotor to be balanced.
  • the balancing part may be configured of upper and lower balancing parts.
  • a process of process or molding a separate balancing part to assembling the balance part is required, and thus, volume, weight and inertia of the rotor increase, thereby increasing a load at the time of rotation.
  • Patent Document 1 US 20070134109 A
  • the present invention has been made in an effort to provide an impeller capable of performing two-dimensional balancing, that is, balancing at upper and lower portions of the impeller, and performing more accurate and efficient balancing by balancing guide grooves.
  • the present invention has been made in an effort to provide an electric blower capable of implementing microminiaturization and ultra-lightness by including an impeller capable of performing efficient balancing, and receiving a driving module for driving the impeller in the impeller.
  • an impeller including: an upper surface, which is an air inlet portion; a lower surface, which is an air outlet portion; and blades formed between the upper and lower surfaces, wherein the upper and lower surfaces are provided with guide grooves for balancing a motor.
  • the guide groove may be formed in a circular shape in a rotation direction of the impeller.
  • an electric blower including: an impeller including an upper surface, which is an air inlet portion, a lower surface, which is an air outlet portion, and blades formed between the upper and lower surfaces, the upper and lower surfaces provided with guide grooves for balancing the motor; and a driving module including a rotor part coupled to the impeller in order to drive the impeller and a stator part, the rotor part including a magnet, the stator part including an armature configured of a core and a coil that are positioned to face the magnet, and the rotor part and the stator part including an air bearing part formed therebetween, wherein the rotor part and the impeller are rotated by electromagnetic force of the magnet and the armature, and the driving module is received in the impeller.
  • the rotor part of the driving module may include: a sleeve rotatably supported by a shaft; and a hub coupled to the sleeve and including the magnet coupled to an inner peripheral portion thereof.
  • the sleeve and the shaft may be mounted with magnetic bearing magnets at surfaces facing each other, respectively.
  • the magnetic bearing magnet may be mounted at an upper end portion of the sleeve.
  • the stator part of the driving module may include: a shaft rotatably supporting the rotor part; a base to which the shaft is fixedly coupled; and the armature coupled to the base and configured of the core and the coil.
  • the shaft may have a micro gap with the sleeve and be insertedly coupled to the sleeve so that an air bearing part is formed, and dynamic pressure generating grooves may be formed in an outer peripheral surface of the shaft facing the sleeve in a radial direction of the shaft.
  • the shaft may further include a ball mounted on a surface facing the impeller in an axial direction of the shaft.
  • the shaft may be formed with a ball receiving groove for mounting the ball at a central portion of an upper end surface thereof.
  • the impeller may further include a plate mounted on a surface facing the ball.
  • the electric blower may further including: an impeller cover covering the impeller; and a motor housing coupled to the impeller cover and including the stator part mounted therein.
  • an electric blower including: an impeller including an upper surface, which is an air inlet portion, a lower surface, which is an air outlet portion, and blades formed between the upper and lower surfaces, the upper and lower surfaces provided with guide grooves for balancing of the motor; and a driving module including a rotor part coupled to the impeller in order to drive the impeller and a stator part, the rotor part including a magnet, the stator part including an armature configured of a core and a coil that are positioned to face the magnet, and the rotor part and the stator part including an air bearing partformed therebetween, wherein the rotor part and the impeller are rotated by electromagnetic force of the magnet and the armature, the driving module is received in the impeller, and the rotor part of the driving module includes a sleeve rotatably supported by the shaft and a magnet coupled to the sleeve so as to face the armature of the stator part.
  • FIG. 1 is a cross-sectional view schematically showing an impeller according to a preferred embodiment of the present invention
  • FIG. 2 is a perspective view schematically showing the impeller shown in FIG. 1 ;
  • FIG. 3 is a cross-sectional view schematically showing an electric blower including the impeller shown in FIG. 1 according to a first preferred embodiment of the present invention.
  • FIG. 4 is a cross-sectional view schematically showing an electric blower including the impeller shown in FIG. 1 according to a second preferred embodiment of the present invention.
  • FIG. 1 is a cross-sectional view schematically showing an impeller according to a preferred embodiment of the present invention
  • FIG. 2 is a perspective view schematically showing the impeller shown in FIG. 1 .
  • an upper surface 11 which is an air inlet portion
  • a lower surface 12 which is an air outlet portion
  • blades 13 are formed between the upper and lower surfaces 11 and 112 .
  • the blade 13 is formed with a round part so that a standing direction is bent from an upper portion, which is the inlet portion, to a lower portion, which is the outlet portion.
  • the upper surface 11 is provided with a guide groove 11 a for balancing of the motor.
  • the lower surface 12 is provided with a guide groove 12 a for balancing of the motor.
  • the guide groove 12 a may be formed in a circular shape in a rotation direction of the impeller.
  • FIGS. 1 and 2 show the case in which the guide grooves 11 a and 12 a are simultaneously formed in the upper and lower surfaces 11 and 12 , respectively, and balancing processing groove 11 b and 12 b are formed to be balanced. That is, more accurate and efficient balancing may be performed by two-dimensional balancing at the upper and lower portions.
  • FIG. 3 is a cross-sectional view schematically showing an electric blower including the impeller shown in FIG. 1 according to a first preferred embodiment of the present invention.
  • the electric blower 100 includes an impeller 110 and a driving module 120 . More specifically, the driving module 120 is positioned at a lower portion of the impeller so as to be received in the impeller.
  • the impeller 110 is covered with an impeller cover 200 .
  • the driving module 120 is configured of a rotor part and stator part, wherein the rotor part is coupled to the impeller 110 and the stator part is mounted in a motor housing 300 . Further, the cover 200 and the motor housing 300 are coupled to each other by press-fitting, or the like.
  • the impeller 110 includes the balancing guide grooves 111 a and 112 a formed in upper and lower surfaces 111 and 112 , respectively, for balancing of the motor, and balancing processing grooves 111 b and 112 b are formed in the balancing guide grooves 111 a and 112 a to be balanced, such that more accurate and efficient balancing may be implemented.
  • a shaft is provided with a radial dynamic pressure bearing part so as to have an air bearing part
  • the electric blower has a structure in which the driving module is inserted into the impeller, such that miniaturization and lightness may be implemented, and high speed driving may be performed by the air bearing.
  • the driving module 120 is configured of a stator part including a shaft 121 , a base 122 , an armature 123 configured of a core 123 a and a coil 123 b, and a printed circuit board 129 and a rotor part including a sleeve 124 , a hub 125 , and a magnet 126 .
  • an outer diameter portion of the shaft 121 and an inner diameter portion of the sleeve 124 have a micro gap therebetween, and an air bearing part is formed in the micro gap.
  • facing surfaces of the sleeve and the shaft are mounted with magnetic bearing magnets 127 , respectively.
  • the sleeve 124 is rotatably supported by the shaft 121 .
  • the sleeve 124 may include a radial dynamic pressure generating groove formed in the inner diameter portion thereof so that the air bearing part is formed in the micro gap with the shaft 121 , as described above.
  • the hub 125 is coupled to the sleeve 124 and configured of a disk part 125 a extended from the sleeve 124 in an outer diameter direction and a side wall part 125 b extended downwardly in an axial direction of the shaft from an end portion of the disk part 125 a in the outer diameter direction.
  • the sidewall part 125 b includes an annular ring shaped magnet 126 mounted on an inner peripheral surface thereof so as to face the armature 123 configured of the core 123 a and the coil 123 b.
  • a magnetic bearing magnet 127 a is mounted on an inner peripheral surface of the sleeve 124 so as to face a magnetic bearing magnet 127 b of the shaft.
  • the magnetic bearing magnet 127 a may have an annular ring shape.
  • the shaft 121 rotatably supports the sleeve 124 as described above, and the lower portion thereof is fixedly coupled to the base 122 .
  • the shaft 121 is mounted with the magnetic bearing magnet 127 b so as to face the magnetic bearing magnet 127 a of the sleeve.
  • the driving module having a system in which dynamic pressure by the magnetic bearing magnets 127 a and 127 b mounted on each of the sleeve 124 and the shaft 121 in addition to the air bearing may be further stably designed may be implemented.
  • an outer peripheral surface of the shaft 121 may be provided with radial dynamic pressure generating grooves so as to form the air bearing part.
  • the dynamic pressure generating groove may be selectively formed in the outer peripheral surface of the shaft facing the sleeve or the inner peripheral surface of the sleeve facing the shaft.
  • FIG. 3 shows the case in which the dynamic pressure generating grooves 121 a are formed in the outer peripheral surface of the shaft.
  • the dynamic pressure generating groove may have various shapes such as a herringbone shape, or the like, and various sizes according to a design of the dynamic pressure.
  • the base 122 includes the armature 123 fixedly coupled to the outer peripheral portion thereof by press-fitting, adhesion, or the like, so as to face the magnet 126 , wherein the armature 123 includes the core 123 a and the coil 123 b.
  • the printed circuit board 129 which is to supply power to the armature, is mounted on one surface of the base 122 .
  • two-dimensional balancing that is, balancing at the upper and lower portions of the impeller, may be performed, and more accurate and efficient balancing may be performed by the balancing guide grooves.
  • FIG. 4 is a cross-sectional view schematically showing an electric blower including the impeller shown in FIG. 1 according to a second preferred embodiment of the present invention. More specifically, in the electric blower according to the second preferred embodiment of the present invention, a magnet is implemented in an inner-rotor type in which the magnet is coupled to a sleeve and rotates together with the sleeve, as compared to the electric blower according to the first preferred embodiment of the present invention. As shown FIG. 4 , the electric blower 100 includes an impeller 110 and a driving module 130 . More specifically, the driving module 130 is mounted at an inner portion and a lower portion of the impeller 110 of the electric blower 100 .
  • the impeller 110 is covered with an impeller cover 200 .
  • the driving module 130 is configured of a rotor part and stator part, wherein the rotor part is coupled to the impeller 110 and the stator part is mounted in a motor housing 300 .
  • the cover 200 and the motor housing 300 are coupled to each other by press-fitting, or the like.
  • the impeller 110 includes the balancing guide grooves 111 a and 112 a formed in upper and lower surfaces 111 and 112 , respectively, for balancing the motor, and balancing processing grooves 111 b and 112 b are formed in the balancing guide grooves 111 a and 112 a to be balanced, such that more accurate and efficient balancing may be implemented.
  • the driving module has a shaft provided with a radial dynamic pressure bearing part so as to have an air bearing part.
  • the driving module 130 is configured of a stator part including a shaft 131 , a base 132 , an armature 133 configured of a core 133 a and a coil 133 b, and a printed circuit board 138 and a rotor part including a sleeve 134 and a magnet 135 , wherein an outer diameter portion of the shaft 131 and an inner diameter portion of the sleeve 134 have a micro gap therebetween, and an air bearing part is formed in the micro gap.
  • facing surfaces of the sleeve and the shaft are mounted with magnetic bearing magnets 137 a and 137 b , respectively.
  • the sleeve 134 is rotatably supported by the shaft 131 .
  • the sleeve 134 may include a radial dynamic pressure generating groove formed in an inner diameter portion thereof so that the air bearing part is formed in the micro gap with the shaft 131 , as described above.
  • the sleeve is mounted with the magnet 135 facing the armature of the stator part on an inner peripheral surface thereof. Further, a magnetic bearing magnet 137 a is mounted so as to face a magnetic bearing magnet 137 b of the shaft.
  • the magnetic bearing magnet 137 a may have an annular ring shape.
  • the shaft 131 rotatably supports the sleeve 134 as described above, and the lower portion thereof is fixedly coupled to the base 132 .
  • the shaft 131 is mounted with the magnetic bearing magnet 137 b so as to face the magnetic bearing magnet 137 a of the sleeve.
  • the driving module having a system in which dynamic pressure by the magnetic bearing magnets 137 a and 137 b mounted on each of the sleeve 134 and the shaft 131 in addition to the air bearing may be stably designed may be implemented.
  • an outer peripheral surface of the shaft 131 may be provided with radial dynamic pressure generating grooves so as to form the air bearing part.
  • the dynamic pressure generating groove may be selectively formed in the outer peripheral surface of the shaft facing the sleeve or the inner peripheral surface of the sleeve facing the shaft.
  • the base 132 includes the armature 133 fixedly coupled thereto by press-fitting, adhesion, or the like, so as to face the magnet 135 , wherein the armature 133 includes the core 133 a and the coil 133 b.
  • the printed circuit board 138 which is to supply power to the armature, is mounted on one surface of the base 132 .
  • the electric blower according to the first preferred embodiment of the present invention has a structure in which the driving module is inserted into the impeller, miniaturization and lightness thereof may be implemented, and high-speed driving may be implemented by the air bearing.
  • the impeller capable of performing two-dimensional balancing, that is, balancing at the upper and lower portions of the impeller, and performing more accurate and efficient balancing by balancing guide grooves may be provided.
  • the electric blower capable of implementing microminiaturization and ultra-lightness by including the impeller capable of performing efficient the balancing, and receiving the driving module for driving the impeller in the impeller may be provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US13/831,834 2012-11-15 2013-03-15 Impeller and electric blower having the same Abandoned US20140134012A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120129569A KR20140062779A (ko) 2012-11-15 2012-11-15 임펠러 및 이를 포함하는 전동 송풍기
KR10-2012-0129569 2012-11-15

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US13/831,834 Abandoned US20140134012A1 (en) 2012-11-15 2013-03-15 Impeller and electric blower having the same

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US (1) US20140134012A1 (ko)
KR (1) KR20140062779A (ko)
CN (1) CN103821762A (ko)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD778958S1 (en) * 2014-12-19 2017-02-14 Kawasaki Jukogyo Kabushiki Kaisha Impeller for superchargers
US20170177009A1 (en) * 2015-12-17 2017-06-22 Venturedyne, Ltd. Environmental sensor and method of operating the same
EP3432453A1 (en) * 2017-07-21 2019-01-23 Nidec Corporation Blowing device and cleaner
USD847861S1 (en) * 2017-03-21 2019-05-07 Wilkins Ip, Llc Impeller
EP3376047A4 (en) * 2015-11-09 2019-07-24 Nidec Corporation BLOWER DEVICE, AND VACUUM CLEANER
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
WO2020086095A1 (en) * 2018-10-26 2020-04-30 Borgwarner Inc. Rotating machine and method of using the same
US10729218B2 (en) 2015-12-11 2020-08-04 Dyson Technology Limited Motor and a handheld device having a motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017203833A1 (de) * 2017-03-08 2018-09-13 Mahle International Gmbh Flüssigkeitspumpe
CN112412836B (zh) * 2020-10-15 2022-08-02 山东中威空调设备集团暖通有限公司 一种装配式轴流风机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771910A (en) * 1970-09-11 1973-11-13 Laing Nikolaus Axial thrust compensation for centrifugal pumps
US4842485A (en) * 1988-02-10 1989-06-27 Westinghouse Electric Corp. Balanced turbine rotor and method for making the same
US6332758B1 (en) * 2000-01-25 2001-12-25 Hsin-Mao Hsieh Air-bearing fan
US20050150322A1 (en) * 2004-01-09 2005-07-14 Rocky Drew M. Rotatable member with an annular groove for dynamic balancing during rotation
US20060255668A1 (en) * 2005-05-13 2006-11-16 Delta Electronics Inc. Fan motor and stator thereof
US20090004007A1 (en) * 2007-06-29 2009-01-01 Denso Corporation Centrifugal fan and blower having the same
US20100080705A1 (en) * 2008-09-30 2010-04-01 Christian Pronovost Rotor disc and method of balancing
US20120219419A1 (en) * 2011-02-28 2012-08-30 Wen-Hao Liu Round axial fan with balancing structure
US8807949B2 (en) * 2010-03-15 2014-08-19 Emb-Papst Mulfingen Gmbh & Co. Kg Radial fan wheel arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161367A1 (de) * 2001-12-14 2003-07-03 Conti Temic Microelectronic Elektrische Antriebseinheit
GB2417981A (en) * 2004-09-14 2006-03-15 Dana Automotive Ltd Sealing arrangement for a canned motor pump
CN2854915Y (zh) * 2005-12-16 2007-01-03 元山科技工业股份有限公司 小型无刷直流风扇马达
JP4994937B2 (ja) * 2007-05-07 2012-08-08 日立粉末冶金株式会社 ファンモータ用焼結含油軸受
CN201187477Y (zh) * 2008-04-24 2009-01-28 湖北省风机厂有限公司 瓦斯离心鼓风机叶轮装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771910A (en) * 1970-09-11 1973-11-13 Laing Nikolaus Axial thrust compensation for centrifugal pumps
US4842485A (en) * 1988-02-10 1989-06-27 Westinghouse Electric Corp. Balanced turbine rotor and method for making the same
US6332758B1 (en) * 2000-01-25 2001-12-25 Hsin-Mao Hsieh Air-bearing fan
US20050150322A1 (en) * 2004-01-09 2005-07-14 Rocky Drew M. Rotatable member with an annular groove for dynamic balancing during rotation
US20060255668A1 (en) * 2005-05-13 2006-11-16 Delta Electronics Inc. Fan motor and stator thereof
US20090004007A1 (en) * 2007-06-29 2009-01-01 Denso Corporation Centrifugal fan and blower having the same
US20100080705A1 (en) * 2008-09-30 2010-04-01 Christian Pronovost Rotor disc and method of balancing
US8807949B2 (en) * 2010-03-15 2014-08-19 Emb-Papst Mulfingen Gmbh & Co. Kg Radial fan wheel arrangement
US20120219419A1 (en) * 2011-02-28 2012-08-30 Wen-Hao Liu Round axial fan with balancing structure

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD778958S1 (en) * 2014-12-19 2017-02-14 Kawasaki Jukogyo Kabushiki Kaisha Impeller for superchargers
EP3376047A4 (en) * 2015-11-09 2019-07-24 Nidec Corporation BLOWER DEVICE, AND VACUUM CLEANER
US10729218B2 (en) 2015-12-11 2020-08-04 Dyson Technology Limited Motor and a handheld device having a motor
US20170177009A1 (en) * 2015-12-17 2017-06-22 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9983596B2 (en) * 2015-12-17 2018-05-29 Venturedyne, Ltd. Environmental sensor and method of operating the same
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
USD847861S1 (en) * 2017-03-21 2019-05-07 Wilkins Ip, Llc Impeller
EP3432453A1 (en) * 2017-07-21 2019-01-23 Nidec Corporation Blowing device and cleaner
JP2019023434A (ja) * 2017-07-21 2019-02-14 日本電産株式会社 送風装置及び掃除機
WO2020086095A1 (en) * 2018-10-26 2020-04-30 Borgwarner Inc. Rotating machine and method of using the same
US20210336513A1 (en) * 2018-10-26 2021-10-28 Borgwarner Inc. Rotating machine and method of using the same

Also Published As

Publication number Publication date
CN103821762A (zh) 2014-05-28
KR20140062779A (ko) 2014-05-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG ELECTRO-MECHANICS CO., LTD., KOREA, REPUBL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHO, YONG WAN;REEL/FRAME:030118/0089

Effective date: 20130109

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION