WO2015014505A1 - Ventilateur radial de construction compacte - Google Patents

Ventilateur radial de construction compacte Download PDF

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Publication number
WO2015014505A1
WO2015014505A1 PCT/EP2014/055997 EP2014055997W WO2015014505A1 WO 2015014505 A1 WO2015014505 A1 WO 2015014505A1 EP 2014055997 W EP2014055997 W EP 2014055997W WO 2015014505 A1 WO2015014505 A1 WO 2015014505A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
radial
fan
fan housing
carrier
Prior art date
Application number
PCT/EP2014/055997
Other languages
German (de)
English (en)
Inventor
Roland Keber
Hans-Joachim Klink
Frank Schlopakowski
Martin DEININGER
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
Priority to EP14713813.5A priority Critical patent/EP3027911A1/fr
Priority to US14/909,472 priority patent/US20160186763A1/en
Publication of WO2015014505A1 publication Critical patent/WO2015014505A1/fr

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
    • 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 radial fan, in particular a fuel and air-conveying gas fan, which comprises a fan housing with an impeller disposed therein and a passage opening for carrying out a drive shaft to be connected to the impeller.
  • radial fans are known from the prior art, for example from DE 102 04 037 B4.
  • the structure known from this patent has proven itself many times in practice. Nevertheless, it is desirable to reduce the number of parts and the required construction cavities for the arranged on the fan housing components to minimize.
  • Of particular interest in the fan design with laterally arranged electric motor is to keep the axial extent along the drive shaft as small as possible.
  • a gas blower is understood to be any blower which conveys a fuel-air mixture to a burner.
  • the radial fan has a fan housing with an impeller arranged therein and a passage opening for carrying out a drive shaft of an electric motor to be connected to the fan wheel, wherein the electric motor is arranged externally on the gas fan housing by a motor mount.
  • a part of the motor mount extends through the passage opening into the interior of the fan housing.
  • the motor support is located in the mounted state of the blower on a at the für- pomsö opening between the fan housing and the motor carrier arranged elastomeric element and is fixed on the elastomeric element to the fan housing.
  • Height of the motor carrier with integrated or attached thereto electric motor is further reduced by the extension of a part of the motor carrier through the passage opening into the interior of the blower housing.
  • the area between the outer surface of the blower housing and the face of the engine mount facing the blower housing is minimized according to the invention, the axial size of the area being determined by the elastomeric element against which both the blower housing and the engine mount abut.
  • the fixing of the engine mount to the elastomeric element takes place via a retaining ring engaging in the engine mount or an undercut integrated in the engine mount.
  • the fan housing used according to the invention has no undercuts to attach components thereto, so that it can be manufactured and demoulded with a simple on-off tool.
  • the elastomeric element is at the same time designed as a seal of the engine mount opposite an edge of the passage opening and is arranged directly between the blower housing and the engine mount. Due to the sealing function of the elastomeric element between the motor mount and the blower housing, the only leakage path to be checked remains the passage from the blower wheel through the bearings of the drive shaft to the outside. In one embodiment of the invention, it is therefore provided that on the motor mount an outside circumferential Dichtprüfkante is provided.
  • the sealing test edge is designed such that a sealing bell can be placed over the motor carrier in such a way that the remaining leakage path is sealed. In a leak test can thus be compared to previously used premixing gas blowers also checked whether the fan housing wall including the elastic member to which the motor carrier and thus indirectly also the electric motor is attached, is also tight.
  • the part of the motor carrier 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. It is thus not necessary to maintain a special distance between the impeller and the housing wall, in which the fixation of the motor carrier is completed. Rather, the blower wheel can only be positioned with a small gap along the blower housing inner wall. to avoid flow losses.
  • the drive shaft is mounted with a ball bearing and a plain bearing in a one-piece engine mount.
  • a plain bearing has the advantage that it is easy to assemble and less expensive.
  • the rotor of the electric motor between the ball bearing and the plain bearing and the ball bearing axially inside, i. is arranged closer to the housing and the impeller. Compared with the structure known from the prior art, the assembly can be carried out exclusively from one side, so that it can be automated.
  • the motor mount has a holder on which rests the ball bearing of the drive shaft. Such a holder may be formed as in the motor carrier projection or as a circumferential edge on which the ball bearing is supported.
  • the assembly takes place in the engine mount by first the ball bearing then the rotor of the electric motor and finally the slide bearing pushed or pressed onto the drive shaft.
  • the holder of the engine mount here provides a stop for the ball bearing and thus determines the axial position of the drive shaft.
  • the rotor can alternatively be injection molded onto the shaft.
  • the electric motor is designed as a DC motor with a rotor arranged on the drive shaft and a stator accommodated in the motor mount.
  • the rotor of the DC motor is mounted in an advantageous embodiment on the drive shaft and the position of the rotor relative to the stator is offset by an axial length to the outside, ie in the direction away from the impeller or housing.
  • This eccentric arrangement of the rotor relative to the stator in the zero position serves to provide a magnetic return to use force when applying the current, always press the drive shaft with the attached rotor in a predetermined direction or pull.
  • the impeller itself produces a force in operation in the same direction, but in terms of size is speed-dependent. Due to the eccentric arrangement of the rotor relative to the stator in
  • a rectangular printed circuit board is used to control the electric motor.
  • round circuit boards with central recesses for passing the drive shaft rectangular printed circuit boards are advantageous because they ensure a much lower waste, so the cost is reduced.
  • a rectangular circuit board according to the invention therefore providable, since this is radially offset from the drive shaft to the motor mount fastened.
  • a lateral arrangement relative to the drive shaft is understood as radially offset.
  • the attachment of the circuit board to the engine mount can be done for example via a clip connection or other known from the prior art locking.
  • the printed circuit board on the motor mount in a position laterally or below the electric motor which. is unaffected by a caused by the operation of the electric motor heat flow.
  • the installation of the pre-mixing radial or gas blower invention is usually carried out in two alternative positions vertically or horizontally. This requires that the modem Gate carrier and the attached electric motor in one case horizontally, in the other case are arranged vertically. After the heat flow is always substantially vertically upwards, the circuit board is to be arranged either laterally to the flow in the vertical case or below the electric motor in the horizontal case.
  • the heat load is in a lateral arrangement of the circuit board over the previously known from the prior art arrangement immediately axially following the electric motor cheaper because the heat load is lower in any case. Furthermore, it is favorable that a simple connection to the individual bobbins of the electric motor can be ensured by means of a lateral arrangement via a stamped sheet metal.
  • a motor protection cap is provided with a peripheral edge, which covers at least the electric motor, the circuit board and the motor carrier and rests with the peripheral edge of the fan housing.
  • the previously provided in the prior art gap between the motor protection cap and the fan housing wall is thus eliminated and prevents ingress of moisture or other dirt particles between the fan housing wall and the motor protection cap.
  • the electric motor is thus better protected.
  • a direct application is made possible by the fact that the motor protection cap is attached directly to the fan housing and not, as in the prior art, to the engine mount.
  • the engine mount was always influenced by the vibrations of the electric motor, which were transmitted to the motor protection cap, thus necessitating a gap between the fan housing wall and the motor protection cap. With the direct connection of the motor protection cap on the blower housing this disadvantage is overcome.
  • Fig. 1 is a side sectional view of the radial fan according to the invention
  • Fig. 2 is a detail view of Fig. 1; and Fig. 3 is an exploded view of the parts to be assembled
  • a premixing designed as a gas blower 1 radial blower is shown, which is formed on the impeller 3 to promote air and gas to a gas burner.
  • the impeller 3 is arranged in a fan housing 2, of which in Fig. 1, only the side cover is shown.
  • a passage opening 4 is provided through which a drive shaft 5 of an electric motor 6 is guided out and connected to the blower wheel 3.
  • the electric Gate 3 is held by a one-piece on the blower housing 2 arranged, one-piece engine mount 7 or is attached to the one-piece engine mount 7.
  • a part 8 of the motor mount 7 extends through the passage opening 4 into the interior of the blower housing 2 into a region in which the blower wheel 3 is arranged.
  • an elastomeric element 9 is positioned, on which the motor mount 7 rests and over which the motor mount 7 is fixed to the blower housing 2.
  • the fixation takes place in the illustration shown by means of a securing ring 26 which engages in a circumferential groove arranged on the motor carrier 7.
  • the motor mount 7 is thus indirectly fixed and clamped via the elastomeric element 9 and the securing ring 26 on the blower housing 2.
  • the elastomeric element 9 simultaneously serves as a seal of the engine mount 7 with respect to an edge 10 of the passage opening 4, so that there is the only way out of the impeller 3 to the outside via the drive shaft 5 and the storage thereof.
  • a circumferential Dichtprüfkante 11 is provided on the motor carrier 7, to which a sealing bell is connected.
  • the sealing bell the leakage path for the drive shaft 5 and its storage is sealed so that it can be tested in a vacuum container, whether the tightness of the gas blower including the seal is ensured by the elastomeric element 9.
  • the motor mount 7 moves closer to the blower housing 2 in comparison with the prior art that the entire space required in the axial direction of the drive shaft 5 is reduced.
  • the drive shaft 5 is mounted twice over a ball bearing 13 and a sliding bearing 14.
  • the ball bearing 3 rests on a holder 15 of the motor carrier 7, wherein the holder 15 is formed in the embodiment shown as a circumferential edge.
  • the assembly of the components of the bearing and the electric motor 6 takes place on the drive shaft 5 exclusively from one side, in the embodiment shown from above.
  • the ball bearing 13 is pressed onto the drive shaft 5, then the rotor 16 of the electric motor 6 and finally the sliding bearing 14 is attached.
  • the rotor 16 can also be molded onto the drive shaft 5.
  • the bearing of the drive shaft 5 takes place from two sides, wherein the ball bearing 13 axially inwardly, ie closer to the impeller 3, and the sliding bearing 14 axially outboard, ie further away from the impeller 3, are arranged.
  • the electric motor 6 is in the embodiment of FIGS. 1 and 2, a DC motor, the rotor 16 is offset relative to the stator 17 by a predetermined axial length X1 to the outside, ie in the direction away from the impeller 3, in its zero position.
  • This eccentric positioning of the rotor 16 with respect to the stator 17 causes the drive shaft 5 with the rotor arranged thereon to be pulled in the direction "downwards" when energized, in addition to which a force is exerted on the drive shaft 5 by rotating the impeller 3 in the same direction , so that only forces act downward during operation, thus avoiding oscillation of the system impeller 3 and drive shaft 5.
  • a bracket 28 on the motor carrier 7 a rectangular circuit board 8 is shown schematically.
  • the circuit board 18 is offset radially laterally with respect to the drive shaft 5 by the length X2. Radially offset in this context means nothing else than a lateral arrangement of the printed circuit board 18 to the motor carrier 7 and the attached electric motor 6.
  • the arrangement of the circuit board 18 is further selected so that when using the gas blower 1 in a vertical position (in FIG 1, the horizontal position is shown), the printed circuit board 18 is arranged below the electric motor 6, so that a heat flow during operation caused by the electric motor 6 upwards in the opposite direction of the arrangement of the printed circuit board 18 takes place.
  • a motor protection cap 19 which has a peripheral edge 20 which bears against the blower housing 2.
  • the motor protection cap 19 is further attached to the blower housing 2 and thus decoupled from vibrations of the electric motor 6.
  • the arrangement of the motor protection cap 19 takes place with respect to the blower housing 2 thus gap-free.
  • an air duct 27 is formed, which allows a faster removal of heat to the outside.
  • the representation of the air duct 27 is merely schematic.
  • Fig. 3 some components of the embodiment of Fig. 1 are shown in an exploded view to make it clear that the assembly of the components takes place from one side, the details are shown in simplified.
  • the elastomeric element 9 is placed on the blower housing 2 or knotted into this at the peripheral edge 10, wherein locking means 29 are provided which allow an alignment of the components to each other.
  • the motor support 7 is pushed by the elastomeric element 9 into the interior of the fan housing 2 and fixed there with the retaining ring 26 on the elastomeric element 9.
  • the Mo- Gate carrier 7 the ball bearing 13 is inserted and the drive shaft 5 is pressed. Alternatively, only the ball bearing 13 can be pressed onto the drive shaft 5 and both parts are introduced together in the motor carrier 7.
  • the further outward (from the housing farther) illustrated in Fig. 1 components are omitted in Fig. 3.
  • the invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.
  • the fan housing in the region of the passage opening form a base on which rest the elastomeric element and the motor carrier.

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)

Abstract

L'invention concerne un ventilateur radial (1) de construction compacte dans lequel un support de moteur (7) est placé sur un élément élastomère (9) disposé au niveau d'une ouverture de passage (4) ménagée entre le boîtier (2) du ventilateur et le support du moteur et est fixé au boîtier du ventilateur par le biais de l'élément élastomère.
PCT/EP2014/055997 2013-08-02 2014-03-25 Ventilateur radial de construction compacte WO2015014505A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14713813.5A EP3027911A1 (fr) 2013-08-02 2014-03-25 Ventilateur radial de construction compacte
US14/909,472 US20160186763A1 (en) 2013-08-02 2014-03-25 Compact centrifugal fan

Applications Claiming Priority (4)

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

Publications (1)

Publication Number Publication Date
WO2015014505A1 true WO2015014505A1 (fr) 2015-02-05

Family

ID=52430152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/055997 WO2015014505A1 (fr) 2013-08-02 2014-03-25 Ventilateur radial de construction compacte

Country Status (4)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3208472B1 (fr) * 2014-10-14 2023-04-05 Panasonic Intellectual Property Management Co., Ltd. Soufflante centrifuge et automobile la comportant
DE202017104046U1 (de) * 2017-02-23 2017-07-27 Ebm-Papst Landshut Gmbh Verbindungseinheit für ein Gebläse
DE102018129611A1 (de) * 2018-11-23 2020-05-28 Ebm-Papst St. Georgen Gmbh & Co. Kg Rotormontageeinheit mit Kühlfunktion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868440A (en) * 1953-02-03 1959-01-13 Kenton D Mcmahan Multi-stage centrifugal blowers, compressors and the like
US5716200A (en) * 1995-04-24 1998-02-10 Hitachi, Ltd. Blower apparatus having a casing and motor flange having noise reducing configuration
EP0848477A1 (fr) * 1996-12-16 1998-06-17 Siemens Aktiengesellschaft Support isolant du bruit pour moteur électrique et procédé d'assemblage de celui-ci
US20070170790A1 (en) * 2006-01-25 2007-07-26 Denso Corporation Blower
WO2011097157A1 (fr) * 2010-02-04 2011-08-11 Robert Bosch Gmbh Ensemble ventilateur centrifuge
EP2495446A1 (fr) * 2011-03-02 2012-09-05 DENSO THERMAL SYSTEMS S.p.A. Système d'isolation élastique pour un moteur électrique en vue de réduire la transmission de vibrations

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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
DE4334124A1 (de) * 1993-03-04 1994-09-08 Bosch Gmbh Robert Vorrichtung zum Aufnehmen eines Elektromotors
DE10204037C5 (de) 2002-02-01 2009-07-23 Ebm-Papst Landshut Gmbh Radialgebläse mit Elektromotor
DE10259179A1 (de) * 2002-12-18 2004-07-08 Robert Bosch Gmbh Elektrisch angetriebene Luftpumpe und Verfahren zur Herstellung einer elektrisch angetriebenen Luftpumpe
CN101320949A (zh) * 2007-06-04 2008-12-10 瑞格电子股份有限公司 应用于吊扇的直流无刷马达的信号传输装置
JP2009142084A (ja) * 2007-12-06 2009-06-25 Hitachi Ltd 回転電機装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868440A (en) * 1953-02-03 1959-01-13 Kenton D Mcmahan Multi-stage centrifugal blowers, compressors and the like
US5716200A (en) * 1995-04-24 1998-02-10 Hitachi, Ltd. Blower apparatus having a casing and motor flange having noise reducing configuration
EP0848477A1 (fr) * 1996-12-16 1998-06-17 Siemens Aktiengesellschaft Support isolant du bruit pour moteur électrique et procédé d'assemblage de celui-ci
US20070170790A1 (en) * 2006-01-25 2007-07-26 Denso Corporation Blower
WO2011097157A1 (fr) * 2010-02-04 2011-08-11 Robert Bosch Gmbh Ensemble ventilateur centrifuge
EP2495446A1 (fr) * 2011-03-02 2012-09-05 DENSO THERMAL SYSTEMS S.p.A. Système d'isolation élastique pour un moteur électrique en vue de réduire la transmission de vibrations

Also Published As

Publication number Publication date
DE102013109401A1 (de) 2015-02-19
EP3027911A1 (fr) 2016-06-08
US20160186763A1 (en) 2016-06-30

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