EP1591667A2 - Lüftereinheit - Google Patents

Lüftereinheit Download PDF

Info

Publication number
EP1591667A2
EP1591667A2 EP05102671A EP05102671A EP1591667A2 EP 1591667 A2 EP1591667 A2 EP 1591667A2 EP 05102671 A EP05102671 A EP 05102671A EP 05102671 A EP05102671 A EP 05102671A EP 1591667 A2 EP1591667 A2 EP 1591667A2
Authority
EP
European Patent Office
Prior art keywords
casing
impeller
vanes
integrally connected
circular
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.)
Withdrawn
Application number
EP05102671A
Other languages
English (en)
French (fr)
Other versions
EP1591667A3 (de
Inventor
Fabrizio Ferracuti
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.)
Best SpA
Original Assignee
ELECTROMEC SpA
Elektromec 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 ELECTROMEC SpA, Elektromec SpA filed Critical ELECTROMEC SpA
Publication of EP1591667A2 publication Critical patent/EP1591667A2/de
Publication of EP1591667A3 publication Critical patent/EP1591667A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F04D29/26—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
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • 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
    • F04D29/66—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

  • This invention relates to the field of exhaust fans and in particular to the casing and the relative impeller.
  • Said device usually comprises a casing inside which there is an impeller.
  • the casing consists of a differently shaped structure with one or more inlets (usually arranged on opposite faces of the structure) and an outlet.
  • an impeller that moves the gas (air) and is driven in turn by a motor, usually an electric motor, by means of appropriate mechanical connections.
  • Said impeller consists of a structure that is basically cylindrical, comprising one or more rows of vanes the ends of which are integrally connected to two circular edges and which are arranged around a central hub in the form of a cage.
  • the capacity of the casing (meaning the volume of air per time unit that can be expelled) is clearly proportional to the speed of the impeller and the size of the actual casing.
  • the casing and relative impeller according to this invention overcome the drawbacks described above by incorporating specific supporting rings that increase the stability of the impeller vanes to prevent deformation during operation.
  • Said rings strengthen the impeller by increasing the rigidity and reducing the deformation thereof regardless of the type of material that is used to make it.
  • the impeller according to this invention has the usual cylindrical cage shape comprising two circular edges 10, at least one row of vanes 12 that are arranged around at least one central hub 11 to which they are integrally connected, the ends of each of said vanes being integrally connected to said circular edges 10.
  • the stability of the vanes as the impeller turns is guaranteed by the presence of the circular supporting rings 13 that are integrally connected to the vanes and prevent the latter from vibrating and increase their stability during rotation thus achieving the desired advantages.
  • said impeller consists of two rows of vanes 12 joined by means of a circular support arranged in correspondence with said central hub 11, said two rows of vanes 12 both having at least one circular supporting ring 13 integrally connected thereto.
  • the casing (see figure 2) consists of a structure 14 with the air inlet holes 16 on two parallel faces 15, said holes being protected in the usual manner by means of suitable grilles 17.
  • the structure has an outlet 18 that is normally cylindrical to facilitate its insertion into the specific conduits through which the air to be eliminated is conveyed.
  • the parallel faces 15 of the casing are as flat as possible, i.e. with the rims raised as little as possible in order to facilitate the smooth airflow into the actual casing.
  • the electrical connection box 19 which contains the capacitor and the electrical terminations of the motor, is arranged on the outside of the structure 14 of the casing (and integrally connected thereto) in a position that is diametrically opposite the outlet 18 in order to optimise dimensions and facilitate the installation of the casing in the fume hood.
  • said outlet 18 of the casing incorporates a ledge 20 that is provided with a number of appropriate coupling devices.
  • said coupling devices may be of the bayonet type 21 as illustrated in Fig. 2 where the ledge on the casing outlet is provided with four bayonet couplings arranged at a distance of 90° from one another.
  • Said ledge 20 enables the casing to be fitted more easily, more quickly and more accurately to the extraction duct, while the bayonet couplings 21 enable the casing to be clamped in the required position by means of a simple movement.
  • the casings and impellers according to this invention are manufactured using the materials that are normally used for this purpose, for example plastic or metal, and using the appropriate molding processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP05102671A 2004-04-06 2005-04-05 Lüftereinheit Withdrawn EP1591667A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI20040083 ITFI20040083A1 (it) 2004-04-06 2004-04-06 Dispositivo per apparecchi di aspirazione
ITFI20040083 2004-04-06

Publications (2)

Publication Number Publication Date
EP1591667A2 true EP1591667A2 (de) 2005-11-02
EP1591667A3 EP1591667A3 (de) 2009-05-13

Family

ID=34939143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102671A Withdrawn EP1591667A3 (de) 2004-04-06 2005-04-05 Lüftereinheit

Country Status (2)

Country Link
EP (1) EP1591667A3 (de)
IT (1) ITFI20040083A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1478909A (en) * 1921-08-24 1923-12-25 Richard W Oswald Fan wheel
FR1360241A (fr) * 1963-03-23 1964-05-08 Générateur d'air chaud pulsé
FR2199358A5 (de) * 1972-09-14 1974-04-05 Drouard Moteurs
JPS57119199A (en) * 1981-01-17 1982-07-24 Hitachi Ltd Impeller for centrifugal fan
EP1236908A2 (de) * 2001-03-01 2002-09-04 ELIN S.r.l. Motorlüfter für Abzugshauben
EP1338798A2 (de) * 2002-02-26 2003-08-27 Faber S.p.A. Vorrichtung zur Befestigung für einen Lüfterrad

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1478909A (en) * 1921-08-24 1923-12-25 Richard W Oswald Fan wheel
FR1360241A (fr) * 1963-03-23 1964-05-08 Générateur d'air chaud pulsé
FR2199358A5 (de) * 1972-09-14 1974-04-05 Drouard Moteurs
JPS57119199A (en) * 1981-01-17 1982-07-24 Hitachi Ltd Impeller for centrifugal fan
EP1236908A2 (de) * 2001-03-01 2002-09-04 ELIN S.r.l. Motorlüfter für Abzugshauben
EP1338798A2 (de) * 2002-02-26 2003-08-27 Faber S.p.A. Vorrichtung zur Befestigung für einen Lüfterrad

Also Published As

Publication number Publication date
EP1591667A3 (de) 2009-05-13
ITFI20040083A1 (it) 2004-07-06

Similar Documents

Publication Publication Date Title
JP4366092B2 (ja) ブロワー電動機
JP5466315B2 (ja) ブロワアセンブリ
US9017011B2 (en) Furnace air handler blower with enlarged backward curved impeller and associated method of use
EP3308028B1 (de) Gebläseanordnung und gebläse
US20070059167A1 (en) Centrifugal blower for air handling equipment
US20170067485A1 (en) Centrifugal blower and method of assembling the same
US11566634B2 (en) Arrangement of centrifugal impeller of a fan for reducing noise
EP2937570A1 (de) Zentrifugalgebläse
WO2015148819A1 (en) Diffuser collar
EP0651161A1 (de) Kühlvorrichtung für einen Elektromotor eines Turbolüfters
CN104454572A (zh) 单吸入式离心风机
US20150337855A1 (en) Installation structure for drive motor of double suction blower
CN104712583A (zh) 离心鼓风机
KR101817956B1 (ko) 송풍기용 임펠러
GB2080879A (en) Flow guides for centrifugal fans
KR101348035B1 (ko) 원심 팬, 성형용 금형 및 유체 이송 장치
EP1591667A2 (de) Lüftereinheit
KR100725813B1 (ko) 원심팬
KR20200037945A (ko) 팬 어셈블리
CN212657009U (zh) 吊扇
CN203835799U (zh) 混流式消防排烟风机
KR101879124B1 (ko) 송풍기 및 상기 송풍기를 포함하는 송풍 시스템
KR102122255B1 (ko) 시로코팬
CN111828390A (zh) 一种导风定叶轮及风机组件
KR101139118B1 (ko) 집진 장치

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20091111

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20100114

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BEST S.P.A.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20111216