US20160186763A1 - Compact centrifugal fan - Google Patents

Compact centrifugal fan Download PDF

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Publication number
US20160186763A1
US20160186763A1 US14/909,472 US201414909472A US2016186763A1 US 20160186763 A1 US20160186763 A1 US 20160186763A1 US 201414909472 A US201414909472 A US 201414909472A US 2016186763 A1 US2016186763 A1 US 2016186763A1
Authority
US
United States
Prior art keywords
motor mounting
fan
centrifugal fan
electromotor
fan housing
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
US14/909,472
Other languages
English (en)
Inventor
Roland Keber
Hans-Joachim Klink
Frank Schlopakowski
Martin Deininger
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.)
Ebm Papst Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
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 Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Assigned to EBM-PAPST LANDSHUT GMBH reassignment EBM-PAPST LANDSHUT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHLOPAKOWSKI, FRANK, DEININGER, Martin, KEBER, ROLAND, KLINK, HANS-JOACHIM
Publication of US20160186763A1 publication Critical patent/US20160186763A1/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
    • 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
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • 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
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes

Definitions

  • the invention relates to a centrifugal fan, in particular a gas fan that transports fuel and air and that comprises a fan housing with a fan wheel arranged in it and with a through opening for running a drive shaft through it, which drive shaft is to be connected to the fan wheel.
  • centrifugal fans are known from the prior art, for example, from DE 102 04 037 B4.
  • the construction known from this patent has frequently proved itself in practice. Nevertheless, it is desirable to reduce the number of parts and to minimize the construction space required for the structural components arranged on the fan housing. It is especially interesting in a fan construction with laterally arranged electromotor to keep the axial extension along the drive shaft as small as possible.
  • the invention has the problem of making available a more compact centrifugal fan or gas fan with an electromotor arranged on its side which fan requires fewer structural fixing components and is more economical. Another aspect is to be able to carry out a tightness check of the centrifugal or gas fan in an easier and more comprehensive manner.
  • the gas fan in accordance with the invention can be mounted in easy and automated manner.
  • the shaft and the fan wheel arranged on it do not oscillate in the axial direction.
  • the problem for the fan of the invention of ensuring an improved protection against moisture and a lower thermal stressing of electronic structural control components.
  • Every fan which transports a mixture of fuel and air to a burner is to be understood as a gas fan.
  • the centrifugal fan comprises a fan housing with a fan wheel arranged in it and a through opening for running through a drive shaft of an electromotor to be connected to the fan wheel, wherein the electromotor is arranged on the outside of the gas fan housing and held by a motor mounting.
  • a part of the motor mounting extends through the through opening into the interior of the fan housing.
  • the motor mounting lies in the mounted state of the fan on an elastomeric element arranged on the through opening between the fan housing and the motor mounting and is fixed by the elastomeric element on the fan housing.
  • This construction makes it possible to position the motor mounting with the electromotor arranged on it with a lesser interval than previously on the fan housing or the side wall of the fan housing. No additional fastening means for fixing or decoupling oscillations of the motor mounting need to be provided on the fan housing.
  • the motor mounting was always fixed with screws on the fan housing, which are now obsolete due to the fastening by the elastomeric element.
  • the axial length or the height of the motor mounting with the electromotor integrated in it or fastened on it is reduced further by the extension of a part of the motor mounting through the through opening into the interior of the fan housing.
  • the area between the outer surface of the fan housing and the surface of the motor mounting facing the fan housing is limited to a minimum according to the invention, wherein the axial size of the area is determined by the elastomeric element on which the fan housing and the motor mounting rest.
  • the fixing of the motor mounting on the elastomeric element takes place via a safety ring that engages into the motor mounting or via an undercut integrated in the motor mounting.
  • a safety ring engages into the motor mounting or via an undercut integrated in the motor mounting.
  • a solution with a safety ring as well as in a solution with an undercut they are engaged with the elastomeric element in the mounted state and prevent a loosening of the motor mounting from the elastomeric element and therefore from the fan housing.
  • the screwing of the motor mounting to the fan housing which is necessary in the prior art, is no longer necessary.
  • the associated elimination of at least three screws per fan reduces the expense.
  • the fan housing used in accordance with the invention has no undercuts for fastening structural components to them so that it can be produced and removed from the mold with a simple open-close tool.
  • the elastomeric element is simultaneously constructed as a seal of the motor mounting opposite an edge of the through opening and is arranged directly between the fan housing and the motor mounting.
  • the sealing function of the elastomeric element between the motor mounting and the fan housing the only leakage passage that needs to be checked for tightness is the passage from the fan wheel via the support of the drive shaft to the outside. Therefore, an embodiment of the invention provides that a sealing test edge running circumferentially on the outside is provided on the motor mounting.
  • the sealing test edge is constructed in such a manner that a sealing bell can be placed over the motor mounting in such a manner that the remaining leakage path is sealed. Therefore, in the case of a tightness check it can also be checked, in contrast to previously used pre-mixing gas fans whether the fan housing wall including the elastic element to which the motor mounting and therefore indirectly also the electromotor are fastened are also tight.
  • the part of the motor mounting extending into the interior of the fan housing extends into a free space provided on the fan wheel or a hub of the fan wheel. Therefore, it is not necessary to maintain a special interval between the fan wheel and the housing wall in which interval the fixing of the motor mounting is completed but rather the fan wheel can be positioned along the inner wall of the fan housing with only a slight slot dimension in order to avoid flow losses.
  • the centrifugal fan that can be mounted from one side that the drive shaft is supported by a ball bearing and a sliding bearing in the one-part motor mounting.
  • the use of a sliding bearing has the advantage that it can be readily mounted and is less expensive.
  • the invention provides that the rotor of the electromotor is arranged between the ball bearing and the sliding bearing and that the ball bearing is located axially on the inner side, i.e., closer to the housing and to the fan wheel. In comparison to the construction known from the prior art the mounting can take place here exclusively from one side so that it can be automated.
  • the motor mounting comprises a holder on which the ball bearing of the drive shaft rests.
  • Such a holder can be constructed as a projection in the motor mounting or as a circumferential edge on which the ball bearing is supported.
  • the mounting into the motor mounting takes place in that at first the ball bearing and then the rotor of the electromotor and finally the sliding bearing are pushed or pressed onto the drive shaft.
  • the holder of the motor mounting offers a stop here for the ball bearing and therefore determines the axial position of the drive shaft.
  • the rotor can be injected onto the shaft.
  • the electromotor is constructed as a direct current motor with a rotor arranged on the drive shaft and a stator received in the motor mounting.
  • the rotor of the direct current motor is fastened in an advantageous embodiment on the drive shaft and the position of the rotor opposite the stator is offset by one axial length to the outside, i.e., in the direction away from the fan wheel or the housing.
  • This off-center arrangement of the rotor in comparison to the state or in the zero position serves to utilize a magnetic return force during the application of the current to press or draw the driveshaft with the rotor fastened to it into a predetermined direction.
  • the fan wheel itself produces a force in the same direction during operation that is, however, dependent for its magnitude on the speed.
  • the off-center arrangement of the rotor opposite the stator in the currentless state ensures that the shaft with the fan wheel arranged on it does not oscillate in both axial directions during operation but rather a defined axial force is always provided in one direction (in the direction of the central position of the rotor to the stator).
  • a rectangular guide plate is used to control the electromotor.
  • rectangular guide plates are advantageous since they ensure significantly less waste of material which reduces the cost.
  • a rectangular guide plate can therefore be provided according to the invention since it can be fastened on the motor mounting radially offset from the drive shaft.
  • the term radially denotes a lateral arrangement relative to the drive shaft. The fastening of the guide plate on the motor mounting can take place, for example, by a clip connection or by some other catch known from the prior art.
  • the guide plate is arranged on the motor mounting in a position to the side of or below the electromotor and which is not influenced by a heat flow caused by the operation of the electromotor.
  • the inclusion of the pre-mixing centrifugal or gas fan usually takes place in two alternative positions, vertically or horizontally. This brings it about that the motor mounting and the electromotor fastened to it are arranged horizontally in the one case and vertically in the other case. Since the heat flow constantly takes place substantially vertically upward, the guide plate should be arranged either to the side of the flow in the vertical case or below the electromotor in the horizontal case.
  • the thermal load in a side arrangement of the guide plate directly following the electromotor axially is more advantageous compared to the previous arrangement known from the prior art since the thermal load is less in any case. Furthermore, it is advantageous that a simple connection to the individual coil bodies of the electromotor via a stamped sheet can be ensured by a side arrangement.
  • a motor protection cap with a circumferential edge is provided that covers at least the electromotor, the guide plate and the motor mounting and rests with the circumferential edge on the fan housing.
  • a direct contact is made possible by the fact that the motor protection cap is fastened directly on the fan housing and not, as in the state of the art, on the motor mounting.
  • the motor mounting was constantly influenced by the vibrations of the electromotor which were transferred onto the motor protection cap and therefore made a slot necessary between the fan housing wall and the motor protection cap. This disadvantage is overcome with the direct connection of the motor protection cap to the fan housing.
  • Another embodiment provides that air conduction conduits are injected into the motor protection cap produced with the injection molding method and ensure a better removal of the heat generated by the motor.
  • a cooling wing is customarily provided on the drive shaft whose flow cooperates with the air conduction conduits.
  • FIG. 1 shows a sectional side view of the centrifugal fan of the invention
  • FIG. 2 shows a detailed view from FIG. 1 ;
  • FIG. 3 shows an exploded view of the parts in FIG. 1 to be mounted.
  • FIGS. 1 and 2 shows a pre-mixing centrifugal fan constructed as a gas fan 1 constructed to deliver air and gas to a gas burner via the fan wheel 3 .
  • the fan wheel 3 is arranged in a fan housing 2 of which only the side cover is shown in FIG. 1 .
  • a through opening 4 is provided in the fan housing 2 through which a drive shaft 5 of an electromotor 6 runs and is connected to the fan wheel 3 .
  • the electromotor 6 is held by a one-part motor mounting 7 arranged on the outside of the fan housing 2 and is fastened on the one-part motor mounting 7 .
  • a part 8 of the motor mounting 7 extends through the through opening 4 into the interior of the fan housing 2 into an area in which the fan wheel 3 is arranged.
  • An elastomeric element 9 is positioned between the fan housing 2 and the motor mounting 7 on which element the motor mounting 7 rests and by which the motor mounting 7 is fixed on the fan housing 2 .
  • the fixing takes place in the view shown by a safety ring 26 that engages into a circumferential groove arranged on the motor mounting 7 .
  • the motor mounting 7 is therefore directly fixed and tensioned on the fan housing 2 by the elastomeric element 9 and the safety ring 26 .
  • the elastomeric element 9 serves at the same time as a seal of the motor mounting 7 opposite an edge 10 of the through opening 4 so that the single leakage path from the fan wheel 3 to the outside is the path via the drive shaft 5 and its support.
  • a circumferential sealing check edge 11 is provided on the motor carrier 7 and can be connected to a sealing bell.
  • the leakage path for the drive shaft 5 and its support is sealed by the sealing bell so that a check can be made in a vacuum container whether the tightness of the gas fan including the seal is ensured by the elastomeric element 9 .
  • the direct resting of the motor mounting 7 directly on the elastomeric element 9 brings about in addition to the seal a decoupling of the oscillations of the motor mounting 7 with the electromotor 6 arranged on it.
  • the motor mounting 7 moves closer to the fan housing 2 in contrast to explanations from the prior art so that the entire structural space required is reduced in the axial direction of the drive shaft 5 .
  • the part 8 of the motor mounting 7 which extends into the interior of the fan housing 2 ends in a free space 12 provided in the area of the hub of the fan wheel 3 . This also makes possible a more compact construction of the motor mounting 7 to the fan wheel 3 .
  • the drive shaft 5 is supported twice by a ball bearing 13 and a sliding bearing 14 .
  • the ball bearing 13 rests on a holder 15 of the motor mounting 7 , which holder 15 is constructed as a circumferential edge in the embodiment shown.
  • the mounting of the structural components of the bearing and of the electromotor 6 takes place on the drive shaft 5 exclusively from one side, from above in the embodiment shown.
  • the ball bearing 13 is pressed onto the drive shaft 5 , then the rotor 16 of the electromotor 6 and finally the sliding bearing 14 is placed on.
  • the rotor 16 can also be injected onto the drive shaft 5 .
  • the support of the drive shaft 5 takes place from two sides, wherein the ball bearing 13 lies axially inward, i.e. closer to the fan wheel 3 and the sliding bearing 14 is located axially outward, i.e. further removed from the fan wheel 3 .
  • the electromotor 6 is a direct current motor in the embodiment according to FIGS. 1 and 2 whose is rotor 16 is offset relative to the stator 17 by a predetermined axial length X 1 toward the outside, i.e., in the direction away from the fan wheel 3 , in its zero position.
  • This off-center positioning of the rotor 16 relative to the stator 17 has the result that during a current feed the drive shaft 5 with the rotor arranged on it is drawn in the “down” direction.
  • an action of force takes place on the drive shaft 5 by the rotation of the fan wheel 3 in the same direction so that during operation forces act exclusively downward. Therefore, an oscillation of the system of fan wheel 3 and drive shaft 5 is avoided.
  • a rectangular guide plate 18 is schematically shown on a holder 28 on the motor mounting 7 .
  • the guide plate 18 is offset radially to the side by the length X 2 relative to the drive shaft 5 . Radially offset signifies in this connection nothing more than a lateral arrangement of the guide plate 18 relative to the motor mounting 7 and to the electromotor 6 fastened on it.
  • the arrangement of the guide plate 18 is selected in such a manner that when the gas fan 1 is being used in the vertical position ( FIG. 1 shows the horizontal position) the guide plate 18 is arranged underneath the electromotor 6 so that a heat flow produced during the operation by the electromotor 6 takes place upward in the opposite direction of the arrangement of the guide plate 18 .
  • a motor protection cap 19 that has a circumferential edge 20 that rests on the fan housing 2 . Furthermore, the motor protection cap 19 is fastened on the fan housing 2 and therefore decoupled from oscillations of the electromotor 6 . The arrangement of the motor protection cap 19 therefore takes place without a gap opposite the fan housing 2 .
  • An air conduction conduit 27 is formed inside the motor protection cap 19 which makes possible a rapid removal of the heat to the outside. The view of the air conduction conduit 27 is only schematic.
  • FIG. 3 shows a few structural components of the embodiment of FIG. 1 in an exploded view in order to illustrate that the mounting of the structural components takes place from one side, wherein the details are shown in a simplified manner.
  • the elastomeric element 9 is placed on the fan housing 2 and coupled into it on its circumferential edge 10 , wherein stop means 29 are provided which make an alignment of the structural components relative to each other possible.
  • the motor mounting 7 is pushed by the elastomeric element 9 into the interior of the fan housing 2 and fixed there with the safety ring 26 to the elastomeric element 9 .
  • the ball bearing 13 is inserted into the motor mounting 7 and the drive shaft 5 pressed on. Alternatively, the ball bearing 13 can also be pressed onto the drive shaft 5 first and both parts are introduced together into the motor mounting 7 .
  • the structural components shown further outside (further removed from the housing) in FIG. 1 are omitted in FIG. 3 .
  • the fan housing can form a base in the area of the through opening on which the elastomeric element and the motor mounting rest.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US14/909,472 2013-08-02 2014-03-25 Compact centrifugal fan Abandoned US20160186763A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102013108368.4 2013-08-02
DE102013108368 2013-08-02
DE102013109401.5 2013-08-29
DE102013109401.5A DE102013109401A1 (de) 2013-08-02 2013-08-29 Radialgebläse in kompakter Bauweise
PCT/EP2014/055997 WO2015014505A1 (de) 2013-08-02 2014-03-25 Radialgebläse in kompakter bauweise

Publications (1)

Publication Number Publication Date
US20160186763A1 true US20160186763A1 (en) 2016-06-30

Family

ID=52430152

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/909,472 Abandoned US20160186763A1 (en) 2013-08-02 2014-03-25 Compact centrifugal fan

Country Status (4)

Country Link
US (1) US20160186763A1 (de)
EP (1) EP3027911A1 (de)
DE (1) DE102013109401A1 (de)
WO (1) WO2015014505A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261005A1 (en) * 2014-10-14 2017-09-14 Panasonic Intellectual Property Management Co., Ltd. Centrifugal blower and automobile provided with same
US20180238345A1 (en) * 2017-02-23 2018-08-23 Ebm-Papst Landshut Gmbh Connector unit for a fan
CN112888860A (zh) * 2018-11-23 2021-06-01 依必安-派特圣乔根有限责任两合公司 具有冷却功能的转子安装单元

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US2020092A (en) * 1934-07-05 1935-11-05 B F Sturtevant Company Inc Motor mounting
US2680559A (en) * 1949-11-02 1954-06-08 Wayne J Morrill Rotative driving coupler
US3339867A (en) * 1966-06-28 1967-09-05 Electrolux Corp Motor mount
US3601502A (en) * 1969-09-17 1971-08-24 Gen Motors Corp Vibration isolation blower mounting
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
US5786647A (en) * 1993-03-04 1998-07-28 Robert Bosch Gmbh Device for incorporating a motor
US20090004010A1 (en) * 2007-06-04 2009-01-01 Rhine Electronic Co., Ltd. Signal transmission apparatus of a dc brushless motor for a ceiling fan
US7520734B2 (en) * 2002-12-18 2009-04-21 Robert Bosch Gmbh Electrically driven air pump and method for the production thereof
US20090179510A1 (en) * 2007-12-06 2009-07-16 Hitachi, Ltd. Rotating Electrical Machine

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US2868440A (en) * 1953-02-03 1959-01-13 Kenton D Mcmahan Multi-stage centrifugal blowers, compressors and the like
JP3304680B2 (ja) * 1995-04-24 2002-07-22 株式会社日立製作所 ブロワ装置
DE19652328C2 (de) * 1996-12-16 2000-09-28 Siemens Ag Geräuschgedämmte Halterung eines Elektromotors und Verfahren zum Zusammenbau der Halterung
DE10204037C5 (de) 2002-02-01 2009-07-23 Ebm-Papst Landshut Gmbh Radialgebläse mit Elektromotor
JP4682854B2 (ja) * 2006-01-25 2011-05-11 株式会社デンソー 送風機
US8267674B2 (en) * 2010-02-04 2012-09-18 Robert Bosch Gmbh Centrifugal blower assembly
ITTO20110188A1 (it) * 2011-03-02 2012-09-03 Denso Thermal Systems Spa Sistema di isolamento elastico di un motore elettrico per ridurre la trasmissione di vibrazioni

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Publication number Priority date Publication date Assignee Title
US2020092A (en) * 1934-07-05 1935-11-05 B F Sturtevant Company Inc Motor mounting
US2680559A (en) * 1949-11-02 1954-06-08 Wayne J Morrill Rotative driving coupler
US3339867A (en) * 1966-06-28 1967-09-05 Electrolux Corp Motor mount
US3601502A (en) * 1969-09-17 1971-08-24 Gen Motors Corp Vibration isolation blower mounting
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
US5786647A (en) * 1993-03-04 1998-07-28 Robert Bosch Gmbh Device for incorporating a motor
US7520734B2 (en) * 2002-12-18 2009-04-21 Robert Bosch Gmbh Electrically driven air pump and method for the production thereof
US20090004010A1 (en) * 2007-06-04 2009-01-01 Rhine Electronic Co., Ltd. Signal transmission apparatus of a dc brushless motor for a ceiling fan
US20090179510A1 (en) * 2007-12-06 2009-07-16 Hitachi, Ltd. Rotating Electrical Machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261005A1 (en) * 2014-10-14 2017-09-14 Panasonic Intellectual Property Management Co., Ltd. Centrifugal blower and automobile provided with same
US10634167B2 (en) * 2014-10-14 2020-04-28 Panasonic Intellectual Property Management Co., Ltd. Centrifugal blower and automobile provided with same
US20180238345A1 (en) * 2017-02-23 2018-08-23 Ebm-Papst Landshut Gmbh Connector unit for a fan
US10704566B2 (en) * 2017-02-23 2020-07-07 Ebm-Papst Landshut Gmbh Connector unit for a fan
CN112888860A (zh) * 2018-11-23 2021-06-01 依必安-派特圣乔根有限责任两合公司 具有冷却功能的转子安装单元

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WO2015014505A1 (de) 2015-02-05
DE102013109401A1 (de) 2015-02-19
EP3027911A1 (de) 2016-06-08

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