EP1571351B1 - Aufhängung für einen Ventilatormotor - Google Patents

Aufhängung für einen Ventilatormotor Download PDF

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Publication number
EP1571351B1
EP1571351B1 EP20040425136 EP04425136A EP1571351B1 EP 1571351 B1 EP1571351 B1 EP 1571351B1 EP 20040425136 EP20040425136 EP 20040425136 EP 04425136 A EP04425136 A EP 04425136A EP 1571351 B1 EP1571351 B1 EP 1571351B1
Authority
EP
European Patent Office
Prior art keywords
electric motor
housing
fan
respect
damping member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20040425136
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English (en)
French (fr)
Other versions
EP1571351A1 (de
Inventor
Giuseppe Toniato
Stefano Bernardi
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.)
Riello SpA
Original Assignee
Riello SpA
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 Riello SpA filed Critical Riello SpA
Priority to EP20040425136 priority Critical patent/EP1571351B1/de
Priority to DE200460003898 priority patent/DE602004003898D1/de
Priority to CN 200510053110 priority patent/CN1664379A/zh
Publication of EP1571351A1 publication Critical patent/EP1571351A1/de
Application granted granted Critical
Publication of EP1571351B1 publication Critical patent/EP1571351B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/66—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

Definitions

  • the present invention relates to a fan suspension system for reducing vibration on the supporting frame induced by rotation of the electric motor shaft and the masses, e.g. the fan impeller, connected to it.
  • Severe vibration may be generated in particular when the electric motor shaft rotates at high speed.
  • one or more elastic members metal springs or rubber pads
  • the present invention may be used to advantage in a fan associated with a combustion unit, in which reducing vibration, and therefore noise, is particularly important.
  • number 10 indicates a fan to which is applied a first embodiment of a suspension system 100 for an electric motor 11 enclosed in a casing 12 supported by a partly sectioned "cup-shaped" member 13 ( Figure 1).
  • the innovative system 100 will be described in detail later on.
  • electric motor 11 rotates a drive shaft 14, which is fitted with an impeller 15 enclosed in a housing 16 having a scroll.
  • housing 16 comprises a first "cup-shaped" portion 16a, and a second portion 16b in the form of a cover; and the two portions 16a, 16b are fixed to each other by conventional means (not described) to enclose impeller 15.
  • member 13 houses, inside a seat 17, a bearing 19 supporting drive shaft 14.
  • the three elastic members 20 are made of rubber or any elastomeric material, and each surrounds a pin 20a screwed to the outer end of first portion 16a by a respective screw 21 ( Figure 3).
  • each elastic member 20 comprises a substantially cylindrical main body 20b, in which is formed a circumferential groove 20c.
  • each elastic member 20 is inserted inside a corresponding seat 21a formed in "cup-shaped” member 13; and circumferential groove 20c engages the walls of respective seat 21a to elastically secure housing 16 with respect to "cup-shaped" member 13 as required.
  • the term "suspended mass” in the present context is intended to mean the whole defined by electric motor 11, casing 12, "cup-shaped” member 13, drive shaft 14, and impeller 15, and which is substantially symmetrical with respect to the longitudinal axis (a) of drive shaft 14.
  • system 100 comprises at least one damping member 20 interposed between housing 16 housing impeller 15, and member 13 housing and supporting electric motor 11.
  • Figure 7a shows vibration, along the Y axis, with respect to the speed of drive shaft 14, along the X axis; and the comparison was made between a fan 10 in accordance with the present invention and fitted with suspension system 100 described, and the same fan fitted with a prior-art suspension system.
  • the vibration detecting device (not shown) was placed on casing 12 of electric motor 11.
  • Figure 7b shows vibration (along the Y axis) with respect to the speed of drive shaft 14, but, in this case, with the detecting device on housing 16.
  • toroidal member 22 is inserted inside a seat 23 formed in "cup-shaped" member 13, and, as shown in Figure 6, is fixed to first portion 16a by three screws 24.

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

Claims (8)

  1. Aufhängungssystem (100) für einen Lüfter (10), wobei das Aufhängungssystem (100) wenigstens ein Dämpfungselement (20; 22) umfasst, das zwischen einem Gehäuse (16), in dem ein Lüfterrad (15) des Lüfters (10) untergebracht ist, und wenigstens einem Gehäuse- und Trägerelement (12, 13) angeordnet ist, welches einen Elektromotor (11) aufnimmt und trägt, wobei das Aufhängungssystem (100) dadurch gekennzeichnet ist, dass sich das wenigstens eine Dämpfungselement (20; 22) gemäß der folgenden Gleichung in einem Abstand (r) befindet: r = J M ,
    Figure imgb0005
    wobei (M) die "aufgehängte Masse" ist, die im Wesentlichen von der kombinierten Masse aus dem Elektromotor (11), dem Gehäuse- und Trägerelement (12, 13), einer Antriebswelle (14) und dem Lüfterrad (15) gebildet wird, und (J) das Trägheitsmoment der "aufgehängten Masse" in Bezug auf eine Längssymmetrieachse (a) der Antriebswelle (14) ist.
  2. System (100) nach Anspruch 1, wobei die "aufgehängte Masse" im Wesentlichen symmetrisch zur Achse (a) ist.
  3. System (100) nach einem der vorangehenden Ansprüche, wobei das wenigstens eine Dämpfungselement (20) im Wesentlichen zylindrisch ist.
  4. System (100) nach Anspruch 1 oder 2, wobei das wenigstens eine Dämpfungselement (22) ein ringförmiges Element ist.
  5. System (100) nach einem der vorangehenden Ansprüche, wobei das wenigstens eine Dämpfungselement (20; 22) an dem Gehäuse (16) befestigt ist.
  6. System (100) nach Anspruch 5, wobei das wenigstens eine Dämpfungselement (20; 22) im Innern eines Sitzes (21a; 23) untergebracht ist, der in einem Element (13) integral mit dem Elektromotor (11) ausgebildet ist.
  7. System (100) nach einem der vorangehenden Ansprüche, wobei der Elektromotor (11) ein bürstenloser Elektromotor ist.
  8. Verbrennungseinheit, dadurch gekennzeichnet, dass sie wenigstens einen Lüfter (10) umfasst, der mit einem Aufhängungssystem (100) gemäß einem der vorangehenden Ansprüche ausgestattet ist.
EP20040425136 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor Expired - Lifetime EP1571351B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20040425136 EP1571351B1 (de) 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor
DE200460003898 DE602004003898D1 (de) 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor
CN 200510053110 CN1664379A (zh) 2004-03-02 2005-03-02 风扇悬挂系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040425136 EP1571351B1 (de) 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor

Publications (2)

Publication Number Publication Date
EP1571351A1 EP1571351A1 (de) 2005-09-07
EP1571351B1 true EP1571351B1 (de) 2006-12-27

Family

ID=34746222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040425136 Expired - Lifetime EP1571351B1 (de) 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor

Country Status (3)

Country Link
EP (1) EP1571351B1 (de)
CN (1) CN1664379A (de)
DE (1) DE602004003898D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5916704B2 (ja) 2010-04-06 2016-05-11 スリーエム イノベイティブ プロパティズ カンパニー 空気濾過装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030068A (en) * 1989-09-18 1991-07-09 Jacobs Paul G Vibration and shock damping air blower
DE19813984C5 (de) * 1998-03-28 2010-02-11 Robert Bosch Gmbh Entkopplungsvorrichtung für einen Elektromotor
DE20206862U1 (de) * 2002-04-30 2003-09-04 ebm Werke GmbH & Co. KG, 74673 Mulfingen Anordnung zur schwingungsisolierenden Halterung eines Elektromotors

Also Published As

Publication number Publication date
EP1571351A1 (de) 2005-09-07
DE602004003898D1 (de) 2007-02-08
CN1664379A (zh) 2005-09-07

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