EP2766609A1 - Balancing weight for a fan wheel - Google Patents
Balancing weight for a fan wheelInfo
- Publication number
- EP2766609A1 EP2766609A1 EP11767712.0A EP11767712A EP2766609A1 EP 2766609 A1 EP2766609 A1 EP 2766609A1 EP 11767712 A EP11767712 A EP 11767712A EP 2766609 A1 EP2766609 A1 EP 2766609A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- spring clip
- additional weight
- impeller
- receiving portion
- 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
- 210000000078 claw Anatomy 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000006978 adaptation Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009964 serging Methods 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
- 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
- F04D29/662—Balancing of rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/027—Arrangements for balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/10—Anti- vibration means
-
- 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 present invention relates to a balance weight for balancing a
- Blower and fan impellers typically need to be balanced for practical use to ensure smooth, low-vibration operation.
- balancing weights are arranged above all on the outer periphery.
- the prior art describes various possibilities.
- the document DE 10 2009 007 803 A1 describes in a multi-blade centrifugal fan a balance weight with a clamp shape for attachment to an edge region of the fan.
- This embodiment of a balancing weight has the disadvantage because of the relatively low weight of the individual clamp or clamp with strong imbalances of the impeller that in each case several weights must be arranged side by side. This makes the balancing process consuming.
- DE 10 2010 01 1 526 A1 describes a radial-impeller assembly a clamp-like balance weight, which with the same, previously described
- this fan has a special
- At least one balance weight is fastened.
- the further document DE 10 2006 057 087 B3 describes an impeller for a fan, wherein the impeller has special pockets for insertion of balancing weights.
- the present invention is based on the object to provide a balance weight for the application described, which allows a simplified and effective balancing of an impeller with little effort.
- the balancing weight is formed in two parts from a spring clip and an additional weight, wherein the spring clip has a holding portion for attachment to the impeller and a receiving portion for holding the additional weight.
- the invention also relates to the individual components of
- the spring clip can be attached to the impeller in a simple manner and at any circumferential locations. Due to the separate additional weight that can
- Balancing can be optimized by different weights are provided in terms of their weight or their mass; It can then be held each appropriate additional weight in the receiving portion of the spring clip. As a result, even larger imbalances can be compensated with only one or very few balancing weights according to the invention.
- the spring clip as a one-piece stamped and bent form part of a spring steel sheet.
- the spring clip is expediently bent approximately S-shaped in such a way that the holding section is approximately U-shaped and, via a common web section, into the likewise approximately U-shaped section. shaped reception section.
- the holding portion and the receiving portion are then reversely oriented with respect to their opening sides.
- the holding section is designed in adaptation to the impeller so that it in a quick and easy way non-positively and / or positively on any peripheral edge of the
- Blower wheel is attachable. This allows for balancing at any circumferential location of the impeller.
- the additional weight is formed in a preferred embodiment as a flat, cuboid body of a particular metallic sheet.
- the additional weight and the receiving portion of the spring clip in adaptation to each other are designed such that the additional weight solvable - and thus
- Fig. 1 is an axially sectioned side view of a possible embodiment of a
- FIG. 2 is a greatly enlarged view of the area II in Fig. 1 in a section corresponding to the sectional plane II-II in Fig. 6,
- FIG. 3 is a separate perspective view of a spring clip of the
- Fig. 4 is a perspective view of the spring clip with inserted
- Additional weight is a side view of the entire balance weight in the direction of arrow V of FIG. 4,
- FIG. 6 is a front view in the direction of arrow VI of FIG. 5, wherein additionally indicated by dashed lines a larger additional weight,
- FIG. 8 shows a cross section through the additional weight in the sectional plane VIII-VIII according to FIG. 7.
- an impeller 2 is exemplified in an embodiment as a radial impeller, wherein at a peripheral location of the outer periphery a
- inventive balance weight 1 is indicated.
- the illustrated impeller 2 has a bottom disk 4, a cover disk 6 and arranged between the bottom disk 4 and the cover disk 6 blades 8.
- the bottom disk 4 and the cover disk 6 each have in their outer peripheral region an outer edge 10 which is angled in the axial or axially parallel direction.
- the impeller 2 consists in particular of aluminum sheet with a sheet thickness in the range of 1, 5 to 6 mm.
- the balancing weight 1 according to the invention will be described below with reference to the representations in FIGS. 2 to 8.
- the balancing weight 1 is made in two parts, it consists of a spring clip 12 and an additional weight 14.
- the spring clip 12 has a holding portion 16 for fixing on the peripheral edge 10 of the cover plate 6 or the bottom plate 4 of the impeller 2 and a receiving portion 18 for holding the additional weight 14 on.
- the spring clip 12 is preferably made as a one-piece stamped and bent form part of a spring steel sheet by an originally rectangular sheet metal strip is punched and shaped accordingly.
- the spring clip 12 is bent in such an approximately S-shaped or twice opposite U-shaped, that the holding portion 16 is approximately U-shaped and merges via a common web portion 20 in the likewise approximately U-shaped receiving portion 18.
- approximately S-shaped means that it is not a curved, bow-shaped embodiment, but the shape consists of flat and over edging into each other merging sections
- the holding portion 16 of a flat outer retaining web 22, a adjoining transition bar 24 and the adjoining common web section 20 To form the holding section 18, an outer joins the middle web section 20 via a further transition bar 26
- the additional weight 14 is preferably designed as a flat, cuboid-like body made of a particular metallic flat material.
- the holding portion 16 is formed in adaptation to the thickness of the peripheral edge 10 of the impeller 2 such that it is non-positively and / or positively on the peripheral edge 10 plugged.
- the additional weight 14 and the receiving portion 18 of the spring clip 12 in adaptation to each other are formed such that the additional weight 14 releasably non-positively and / or positively in the receiving portion 18 can be inserted.
- the spring clip 12 - in particular in side edge regions of the common web portion 20 - inwardly into the holding portion 16 projecting, in particular tapered
- the additional weight 14 on its two opposite side surfaces in each case similar retaining recesses 34, see Fig. 7 and 8.
- This embodiment allows insertion of the additional weight 14 in any orientation, so that to be respected at the onset of a particular orientation needs.
- the web portion 20 in the region of its side edges on two symmetrical, open-edge free cuts 36, wherein the web portion 20 is angled about an extending between the two cutouts 36 bending line 38 so at an obtuse angle, that thereby the
- Holding claws 30 protrude obliquely from the original plane in the holding portion 16.
- the retaining claws 32 are formed by two lateral, symmetrical cutouts 40 of the outer retaining web 28, wherein the retaining web is angled around an extending between the cutouts 40 bending line 42 at an obtuse angle, thereby the retaining claws 32 from the original plane of the retaining web 28 out obliquely into the receiving portion 18 protrude.
- the additional weight 14 could also be formed without the retaining recesses 34;
- the sharp, sharp-edged retaining claws 32 would then - in analogy to the retaining claws 30 - slightly intervene or penetrate into the material.
- the balancing weight 1 can be attached in any desired number or number of peripheral locations of cover plate 6 and / or bottom plate 4, preferably so that each of the
- Receiving section 18 is arranged with the additional weight 14 on the radially inwardly facing side of the peripheral edge 10 of the bottom or cover plate 4/6, see Fig. 2. This ensures a good and safe support during rotation
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2011/067768 WO2013053387A1 (en) | 2011-10-12 | 2011-10-12 | Balancing weight for a fan wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2766609A1 true EP2766609A1 (en) | 2014-08-20 |
EP2766609B1 EP2766609B1 (en) | 2016-03-30 |
Family
ID=44785865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11767712.0A Active EP2766609B1 (en) | 2011-10-12 | 2011-10-12 | Balancing weight for a fan wheel |
Country Status (6)
Country | Link |
---|---|
US (1) | US9638214B2 (en) |
EP (1) | EP2766609B1 (en) |
CN (1) | CN103857921B (en) |
ES (1) | ES2573131T3 (en) |
HU (1) | HUE028059T2 (en) |
WO (1) | WO2013053387A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016210454A1 (en) * | 2016-06-14 | 2017-12-14 | MTU Aero Engines AG | Balancing weight for a blade of a turbine stage |
JP7116301B2 (en) | 2018-06-15 | 2022-08-10 | ダイキン工業株式会社 | Blower |
JP7116300B2 (en) * | 2018-06-15 | 2022-08-10 | ダイキン工業株式会社 | Balance weight and blower |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2221747A (en) * | 1939-03-01 | 1940-11-19 | Ellen E Turner | Wheel balance weight |
US3512222A (en) * | 1968-02-27 | 1970-05-19 | George A Tinnerman | Panel clip |
US4043147A (en) * | 1976-06-15 | 1977-08-23 | The United States Of America As Represented By The Secretary Of The Air Force | Intershaft balance weight |
US6415481B1 (en) * | 1997-10-08 | 2002-07-09 | Stanley Fastening Systems, L.P. | Squeakless furniture spring anchor clip |
KR20000032976A (en) * | 1998-11-18 | 2000-06-15 | 윤종용 | Cross flow fan for air conditioner |
DE19957030A1 (en) * | 1999-11-26 | 2001-05-31 | Bosch Gmbh Robert | Weighting clip for balancing rotation of rotary body e.g. fan wheel, has pointed tongues at ends of its arms for penetrating surface of rotary body |
JP2002327697A (en) | 2001-04-27 | 2002-11-15 | Boc Edwards Technologies Ltd | Vacuum pump |
JP3974772B2 (en) * | 2001-11-16 | 2007-09-12 | Bocエドワーズ株式会社 | Vacuum pump |
ITMI20020097U1 (en) * | 2002-02-26 | 2003-08-26 | Faber Spa | FAN WITH INTERNAL ROTOR MOTOR WITH QUICK FIXING DEVICE OF AN IMPELLER |
US6796006B2 (en) * | 2002-04-25 | 2004-09-28 | Illinois Tool Works Inc. | Rib clip |
JP4333616B2 (en) * | 2005-03-28 | 2009-09-16 | トヨタ自動車株式会社 | Rotating body balance correcting member and rotating body balance correcting method |
DE102006057087B3 (en) | 2006-12-04 | 2008-06-19 | Minebea Co., Ltd. | Injection-molded plastic rotor for radial blower, is produced with integral hub including concentric recesses for balancing weights at differing axial and radial positions |
JP4978495B2 (en) | 2008-02-08 | 2012-07-18 | 株式会社デンソー | Centrifugal multi-blade fan |
US8631578B2 (en) * | 2009-10-01 | 2014-01-21 | Pratt & Whitney Canada Corp. | Radial balancing clip weight for rotor assembly |
DE102010011526A1 (en) | 2010-03-15 | 2011-09-15 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial fan arrangement |
CN201753703U (en) * | 2010-03-16 | 2011-03-02 | 广东顺威精密塑料股份有限公司 | Constant-flow wind wheel with balancing holes |
CN101922467B (en) * | 2010-03-24 | 2012-01-11 | 南通大通宝富风机有限公司 | Centrifugal blower |
CN201836125U (en) * | 2010-11-05 | 2011-05-18 | 奇鋐科技股份有限公司 | Balancing structure of annular axial flow fan |
-
2011
- 2011-10-12 WO PCT/EP2011/067768 patent/WO2013053387A1/en active Application Filing
- 2011-10-12 HU HUE11767712A patent/HUE028059T2/en unknown
- 2011-10-12 CN CN201180074064.0A patent/CN103857921B/en active Active
- 2011-10-12 ES ES11767712.0T patent/ES2573131T3/en active Active
- 2011-10-12 EP EP11767712.0A patent/EP2766609B1/en active Active
- 2011-10-12 US US14/342,462 patent/US9638214B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013053387A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9638214B2 (en) | 2017-05-02 |
WO2013053387A1 (en) | 2013-04-18 |
ES2573131T3 (en) | 2016-06-06 |
CN103857921B (en) | 2016-08-17 |
EP2766609B1 (en) | 2016-03-30 |
US20140234106A1 (en) | 2014-08-21 |
CN103857921A (en) | 2014-06-11 |
HUE028059T2 (en) | 2016-11-28 |
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