EP1571351B1 - Mécanisme de suspension pour un moteur de ventilateur - Google Patents

Mécanisme de suspension pour un moteur de ventilateur 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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German (de)
English (en)
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EP1571351A1 (fr
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 DE200460003898 priority Critical patent/DE602004003898D1/de
Priority to EP20040425136 priority patent/EP1571351B1/fr
Priority to CN 200510053110 priority patent/CN1664379A/zh
Publication of EP1571351A1 publication Critical patent/EP1571351A1/fr
Application granted granted Critical
Publication of EP1571351B1 publication Critical patent/EP1571351B1/fr
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. Un système de suspension (100) pour un ventilateur (10), le système de suspension (100) comprenant au moins un organe d'amortissement (20; 22) interposé entre un boîtier (16) logeant un impulseur (15) dudit ventilateur (10), et au moins un organe de logement et de support (12, 13) logeant et supportant un moteur électrique (11); le système de suspension (100) étant caractérisé en ce que ledit au moins un organe d'amortissement (20; 22) est placé à une distance (r) selon l'équation suivante: r = J M
    Figure imgb0006
    où (M) est la « masse suspendue » sensiblement définie par les masses combinées dudit moteur électrique (11), dudit organe de logement et de support (12, 13), d'un arbre d'entraînement (14), et dudit impulseur (15); et (J) est le moment d'inertie de ladite « masse suspendue » par rapport à un axe longitudinal (a) de symétrie dudit arbre d'entraînement (14).
  2. Un système (100) selon la revendication 1, dans lequel ladite « masse suspendue » est sensiblement symétrique par rapport audit axe (a).
  3. Un système (100) selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un organe d'amortissement (20) est sensiblement cylindrique.
  4. Un système (100) selon la revendication 1 ou 2, dans lequel ledit au moins un organe d'amortissement (22) est un organe toroïdal.
  5. Un système (100) selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un organe d'amortissement (20; 22) est fixé audit boîtier (16).
  6. Un système (100) selon la revendication 5, dans lequel ledit au moins un organe d'amortissement (20; 22) est logé à l'intérieur d'une assise respective (21a; 23) formée dans un organe (13) intégré audit moteur électrique (11).
  7. Un système (100) selon l'une quelconque des revendications précédentes, dans lequel ledit moteur électrique (11) est un moteur électrique sans balais.
  8. Une unité de combustion, caractérisée en ce qu'elle comprend au moins un ventilateur (10) équipé d'un système de suspension (100) selon l'une quelconque des revendications précédentes.
EP20040425136 2004-03-02 2004-03-02 Mécanisme de suspension pour un moteur de ventilateur Expired - Lifetime EP1571351B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE200460003898 DE602004003898D1 (de) 2004-03-02 2004-03-02 Aufhängung für einen Ventilatormotor
EP20040425136 EP1571351B1 (fr) 2004-03-02 2004-03-02 Mécanisme de suspension pour un moteur de ventilateur
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 (fr) 2004-03-02 2004-03-02 Mécanisme de suspension pour un moteur de ventilateur

Publications (2)

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

Family

ID=34746222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040425136 Expired - Lifetime EP1571351B1 (fr) 2004-03-02 2004-03-02 Mécanisme de suspension pour un moteur de ventilateur

Country Status (3)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2555849B1 (fr) 2010-04-06 2018-06-27 3M Innovative Properties Company Dispositif de filtration d'air

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
CN1664379A (zh) 2005-09-07
DE602004003898D1 (de) 2007-02-08
EP1571351A1 (fr) 2005-09-07

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