EP0486539A1 - Gebläse mit einem elektromotor. - Google Patents
Gebläse mit einem elektromotor.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
Links
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 1
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)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3926456 | 1989-08-10 | ||
DE19893926456 DE3926456A1 (de) | 1989-08-10 | 1989-08-10 | Geblaese mit einem elektromotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0486539A1 true EP0486539A1 (de) | 1992-05-27 |
EP0486539B1 EP0486539B1 (de) | 1994-03-02 |
Family
ID=6386878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900911759 Expired - Lifetime EP0486539B1 (de) | 1989-08-10 | 1990-08-04 | Gebläse mit einem elektromotor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0486539B1 (de) |
DE (1) | DE3926456A1 (de) |
WO (1) | WO1991002163A1 (de) |
Families Citing this family (3)
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)
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 (de) * | 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 (de) * | 1970-10-24 | 1972-04-26 |
-
1989
- 1989-08-10 DE DE19893926456 patent/DE3926456A1/de active Granted
-
1990
- 1990-08-04 EP EP19900911759 patent/EP0486539B1/de not_active Expired - Lifetime
- 1990-08-04 WO PCT/DE1990/000603 patent/WO1991002163A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9102163A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0486539B1 (de) | 1994-03-02 |
WO1991002163A1 (de) | 1991-02-21 |
DE3926456C2 (de) | 1991-06-27 |
DE3926456A1 (de) | 1991-02-14 |
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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 |
|
17P | Request for examination filed |
Effective date: 19920125 |
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AK | Designated contracting states |
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17Q | First examination report despatched |
Effective date: 19930719 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: METRAX GMBH |
|
GRAA | (expected) grant |
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ITF | It: translation for a ep patent filed | ||
AK | Designated contracting states |
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PLBE | No opposition filed within time limit |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050804 |