EP0486539A1 - Ventilateur a moteur electrique. - Google Patents

Ventilateur a moteur electrique.

Info

Publication number
EP0486539A1
EP0486539A1 EP19900911759 EP90911759A EP0486539A1 EP 0486539 A1 EP0486539 A1 EP 0486539A1 EP 19900911759 EP19900911759 EP 19900911759 EP 90911759 A EP90911759 A EP 90911759A EP 0486539 A1 EP0486539 A1 EP 0486539A1
Authority
EP
European Patent Office
Prior art keywords
impeller
blower according
wings
blower
electric motor
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.)
Granted
Application number
EP19900911759
Other languages
German (de)
English (en)
Other versions
EP0486539B1 (fr
Inventor
Konrad Bisser
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.)
Metrax GmbH
Original Assignee
Metronic Electronic 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 Metronic Electronic GmbH filed Critical Metronic Electronic GmbH
Publication of EP0486539A1 publication Critical patent/EP0486539A1/fr
Application granted granted Critical
Publication of EP0486539B1 publication Critical patent/EP0486539B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • 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

Definitions

  • the invention relates to a blower with an electric motor and at least one impeller on the motor shaft, which is arranged in front of the electric motor in a housing cap with a central suction opening and supplies the suctioned air through the engine compartment through outlet openings.
  • the impeller consists of an impeller disk which is non-rotatable is connected to the motor shaft and on the side facing the intake side has wings that are evenly distributed over the circumference, that the wings on the intake side are closed with a wing washer, which is flush with the outer periphery of the impeller disk and the inner ends of the wings and a central recess has, which essentially corresponds in cross section to the suction opening of the housing cap, and that the vanes are concavely recessed on the end faces facing the circumference of the impeller.
  • the structure of the impeller from the impeller disk, F Lägg beg and the wings arranged in between brings a large delivery rate and the recessed wings on the circumference cause a superimposition of mirror-image noises, so that a partial compensation of the basic noise and thus a reduction of the noise as a whole is achieved.
  • two impellers are arranged on the motor shaft, which lie on both sides of an annular stator connected to the housing cap, which is brought up to the motor shaft down to an annular gap, the The circumference is at a distance from the housing cap and is constructed essentially like an impeller.
  • the impeller facing the suction opening acts as a suction wheel and the impeller facing the electric motor acts as a pressure wheel.
  • the stator leads the air sucked in by the suction wheel to the central inlet of the pressure wheel and the like.
  • the structure of the stator is designed according to one embodiment so that the stator is composed of two washers, z ischen those wings, as in the case of the impeller, and that the vanes of the stator are concave on both ends.
  • Fig. 2 is a view of the suction side of the impeller
  • Fig. 3 is a view of the impeller perpendicular to its axis of rotation.
  • the axial fan as can be seen in FIG. 1, has the electric motor 10, which is cut off on the outlet side with the outlet connection 35.
  • the motor bearing 13 On the suction side of the electric motor 10, the motor bearing 13 is screwed, which is used to support the motor shaft.
  • the engine mount 13 With the engine mount 13 is the two-part housing cap 15, 16 connected, which form chambers for the impellers 18 and 24 of the two-stage Axi a Lgeb Läses.
  • the housing cap 16 has the suction opening 17 centrally.
  • the engine compartment 32 is connected via the engine mount 13 to the chambers 30 and 31 of the housing cap 15, 16, since the central bearing part of the engine mount 13 is only connected to the annular fastening point of the engine mount 13 via radial webs 14.
  • the impeller consists of the impeller disk 19, which is pushed onto the MotorwelLe 11 with the bore 34 and fixed to it with the spacer bushings 12 in a rotationally fixed manner.
  • leaf-shaped, somewhat curved blades 21, 21 * and 21 are firmly attached with one longitudinal edge.
  • the concave side of the wing is facing the leading side and the convex side of the wing is facing the trailing side of the impeller 18.
  • the On the suction side, the impeller 18 is closed with the wing ring disk 20.
  • the wing ring disk 20 is firmly connected to the other longitudinal edge of the wing 21, 21 'and 21 "and closes on the circumferential side g and with its central recess 33 flush with the impeller disk 19 and the inner ends of the blades 21, 21 * and 21 ".
  • the end faces of the blades facing the circumference of the impeller 18 are provided with cutouts 22, 22 'and 22" which form% concave edges.
  • the cutouts 22, 22 * and 22" are preferably parabolic .
  • the central recess 33 of the wing washer 20 is approximately adapted to the size of the central suction opening 17 de r housing cap 15, 16.
  • the structure of the impeller 24 serving as a pressure wheel is identical to the structure of the impeller 18, as shown by the impeller rings 25, the flywheel washer 26 and the vanes 27 with the recesses 28.
  • the stator 23 is arranged, which is fastened to the housing cap 15, 16 and only leaves the small annular gap 29 exposed to the motor shaft 11.
  • the air sucked in via the intake opening 17 leaves the impeller 18 circumferentially and is sucked back by the impeller 24 via the stator 23 from the circumferential region into the central region of the chamber 30. From there, the air passes through the impeller 24 and is rraum via the engine mount 13 in the motor '32 is pressed until the air finally leaves the engine room 32 via the outlet pipe 35th
  • the stator 23 is made up of two F lie L ri ngschei ben and blades similar to the impellers 18 and 24.
  • the FLügelL can also have concave recesses on the front sides.
  • the following values were measured: power consumption 800W, delivery rate 600 liters per minute at a pressure of 150 mbar, speed 25,000 rpm and noise level 62 to 64 dB (A). This results in an average noise reduction of approx. 8 dB (A) compared to comparable devices with other impellers.
  • the blower can be designed both as an axial blower and as a bypass blower.

Landscapes

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

Abstract

Un ventilateur comporte un moteur électrique (10) et au moins un rotor (18, 24) sur l'arbre de moteur (11), qui est monté devant le moteur électrique (10) dans un cache de carter (16) pourvu d'une ouverture d'aspiration centrale (17) et amène à des ouvertures de sorties par-delà le compartiment moteur (32) l'air aspiré. Dans le but d'obtenir un débit important et un fonctionnement plus silencieux, le rotor (18, 24) comporte un disque (19, 25) solidaire en rotation avec l'arbre de moteur (11), et des pales (22, 22', 22") sont uniformément réparties sur la circomférence du côté tourné vers l'admission; les pales tournées côté admission sont entourées par une plaque annulaire (20, 26) qui affleure la circonférence extérieure du disque de rotor et les extrémités intérieures des pales (22, 22', 22"); la plaque annulaire (20, 26) possède un évidement central (33) dont la section est sensiblement égale à celle de l'ouverture d'admission (17) du cache de carter (16); et les faces frontales des pales (22, 22', 22") tournées vers la périphérie du rotor sont concaves.
EP19900911759 1989-08-10 1990-08-04 Ventilateur a moteur electrique Expired - Lifetime EP0486539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893926456 DE3926456A1 (de) 1989-08-10 1989-08-10 Geblaese mit einem elektromotor
DE3926456 1989-08-10

Publications (2)

Publication Number Publication Date
EP0486539A1 true EP0486539A1 (fr) 1992-05-27
EP0486539B1 EP0486539B1 (fr) 1994-03-02

Family

ID=6386878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900911759 Expired - Lifetime EP0486539B1 (fr) 1989-08-10 1990-08-04 Ventilateur a moteur electrique

Country Status (3)

Country Link
EP (1) EP0486539B1 (fr)
DE (1) DE3926456A1 (fr)
WO (1) WO1991002163A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161803A (ja) * 2004-12-09 2006-06-22 Samsung Kwangju Electronics Co Ltd 掃除機用インペラーおよびこれを有するモータ組立体
US8057185B2 (en) 2008-02-11 2011-11-15 Lau Industries Forward swept centrifugal fan wheel
DE102012211250A1 (de) * 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugergebläse und Staubsauger mit einem Staubsaugergebläse

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648371A (fr) * 1927-06-20 1928-12-08 Sev Marchal Perfectionnements aux turbines centrifuges pour aspiration ou soufflage
US2091537A (en) * 1933-12-13 1937-08-31 Electrolux Corp Vacuum cleaner
DE1016888B (de) * 1952-02-23 1957-10-03 Maschf Augsburg Nuernberg Ag Laufrad fuer Radialverdichter
NL196239A (fr) * 1954-08-07
US2915237A (en) * 1956-06-13 1959-12-01 Electrolux Corp Centrifugal blowers
US3245610A (en) * 1964-01-02 1966-04-12 Ametek Inc Motor-fan unit for vacuum cleaners
NL7015615A (fr) * 1970-10-24 1972-04-26

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9102163A1 *

Also Published As

Publication number Publication date
DE3926456A1 (de) 1991-02-14
WO1991002163A1 (fr) 1991-02-21
DE3926456C2 (fr) 1991-06-27
EP0486539B1 (fr) 1994-03-02

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