EP2697517A1 - Hélice de générateur de flux d'air puisé, en particulier pour souffleur portatif. - Google Patents
Hélice de générateur de flux d'air puisé, en particulier pour souffleur portatif.Info
- Publication number
- EP2697517A1 EP2697517A1 EP12721327.0A EP12721327A EP2697517A1 EP 2697517 A1 EP2697517 A1 EP 2697517A1 EP 12721327 A EP12721327 A EP 12721327A EP 2697517 A1 EP2697517 A1 EP 2697517A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propeller
- parts
- hub
- propeller according
- rear part
- 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 9
- 238000000465 moulding Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 239000000470 constituent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000003466 welding 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
Definitions
- Pulse air flow generator propeller especially for portable blower.
- the present invention relates to a pulsed air flow generator propeller, in particular for a portable blower. More particularly interestingly, it is applicable to portable blowers. Such devices are commonly used to "sweep up" dead leaves or various rubbish that can cover various surfaces such as lawns, urban traffic routes, outdoor parking lots, sports fields, playgrounds, etc.
- the invention also relates to portable devices, in particular self-contained portable blowers comprising a pulsed air flow generator applying this method and this propeller.
- Axial fans used in the production of blowing machines comprise a helix consisting of a plurality of radial blades, straight or twisted, attached via their base to a central hub.
- Blowers using straight-blade propellers have disadvantages in particular low efficiency, so it is often preferred to use propellers consisting of twisted blades having a better performance.
- each blade acts a bit like an airplane wing. At the entrance to the air, it presents a leading edge and, at the exit of the air, a trailing edge. In order to function optimally, it is necessary that the air arrives substantially perpendicular to the leading edge.
- the principle of the triangle of speeds Figures 8, 8A, 8B
- the document US-2010 / 007476.1 describes a propellant propeller constituted by the assembly of two pieces coaxially contiguous one after the other, namely: a first anterior part formed integrally and consisting of a plurality of twisted blades attached to a central ring, a second posterior piece of conical general shape also formed of a single block.
- the two pieces are assembled by engagement of the base of the blades of the propeller in slots that has the second rear piece.
- the central portion of this assembly is in the form of a truncated cone whose apex is constituted by a relatively large flat area disturbing the aerodynamics of the air inlet.
- Document DE-28 55 909 also describes a propeller for an internal combustion engine cooling fan constituted by the assembly of two pieces coaxially contiguous one after the other, ie: a first an anterior piece formed of a single block and consisting of a plurality of twisted blades attached to a central ring, a second rear part of conical general shape also formed of a single block.
- the first and second parts are also assembled by means of a plurality of screws.
- the central portion of this assembly has the shape of a truncated cone whose apex is also constituted by a relatively large flat area disturbing the aerodynamics of the air inlet.
- An object of the present invention is to provide a propeller free from the aforementioned drawbacks.
- this object is achieved by means of a pulsed air flow generator propeller, in particular for a portable blower, of the type constituted by the assembly of two pieces coaxially contiguous one after the other , is :
- a first anterior piece formed in one piece and consisting of a plurality of twisted blades attached to a central ring
- this propeller being remarkable in that said first and second rear parts are secured by means of a clamping device consisting of a hub comprising two parts assembled coaxially, preferably by interlocking, and between which said two constituent parts of the propeller are interlocked, said hub being integral in rotation with the latter and ensuring the maintenance in assembly position of said anterior and posterior parts.
- the front part of the clamping device has a conical shape and constitutes the top of the air inlet cone.
- the locking of the two parts of the hub in the clamping position is obtained by a forced engagement of the rear part of said hub in the anterior part of the latter.
- the hub comprises an axial bore for housing the end of the shaft of a drive motor, the end of the shaft being secured to the front part of the hub by forced engagement.
- the anterior and posterior parts are assembled by embedding and the twisted blades are attached to the central ring by means of spaced blade legs and the rear piece has a plurality of spaced teeth or claws, engaged in the gaps between said blade roots.
- the device according to the invention is also remarkable in that the outer surface of the blade roots and the outer surface of the teeth or claws constitute portions of the surface of the air intake cone, the junction lines of these external surfaces. being almost imperceptible, so that the assembly of these surfaces has the appearance of a continuous conical surface.
- the invention also relates to a portable blower comprising an axial fan, characterized in that the helix of this axial fan comprises at least one of the main characteristics mentioned above.
- the device according to the invention provides several interesting advantages. Especially :
- this method allows a good repeatability of the quality of the constituent parts of the propeller
- FIG. 1 is a perspective view of an example of an axial helix produced according to the invention.
- Figure 2 is an exploded perspective view of the two constituent parts of the propeller whose assembly hub is not shown.
- Figure 3 is also a perspective view of the two component parts of the helix viewed from another angle.
- Figure 4 is an exploded perspective view of the assembly hub.
- Figure 5 is an axial sectional view of the hub shown in the assembled position.
- Figure 6 is a partial view in axial section showing the two constituent parts assembled by the hub and the drive shaft.
- Figure 7 is a cross-sectional view of the central portion of the helix and showing the rotating drive means.
- FIGS 8, 8A and 8B illustrate an application of the principle of the triangle of speeds.
- Figure 8 is a schematic plan view of a spiral blade propeller.
- FIG. 8A is a sectional view along line AA of FIG. 8.
- FIG. 8B is a sectional view along the line BB of FIG. 8.
- the high-efficiency axial propeller 1 consists of assembling two pieces coaxially contiguous one after the other, namely:
- a first anterior piece 2 formed in a single block and consisting of a plurality of twisted blades 3 attached to a central ring 4,
- anterior parts 2 and posterior 5 are assembled by embedding.
- the twisted blades 3 are attached to the central ring 4 by means of spaced blade roots 3a and the rear part 5 has a plurality of teeth or claws 5a spaced, engaged in the intervals 7 arranged between said blade roots 3a.
- the claws 5a of the rear part 5 have a straight edge oriented along a generatrix of the air intake cone or oriented obliquely with respect to this generator, and a ( opposite curved edge whose conformation corresponds to the surface of the blade roots With this curved edge being in contact, this complementary conformation of the claws 5a and of the blade roots 3a allows a good assembly by embedding the anterior and posterior parts 5.
- the blade roots 3a to which is attached the base of the blades 3 have, laterally, a surface projecting on one side of said base.
- the outer surface 8 of the protruding portion of the blade roots 3a and the outer surface 9 of the teeth or claws 5a constitute portions of the surface of the air inlet cone 6.
- the anterior and posterior pieces 5 are obtained by molding using any suitable material and process, for example by an injection method known per se.
- anterior parts 2 and posterior 5 are made of plastic or light metal, having the desired rigidity for their function.
- a clamping device 10 (FIGS. 4 and 5) constituted by a hub comprising two parts 11 and 12 assembled coaxially and between which are clamped the two embedded parts 2, 5 constituting the helix 1.
- the hub 10 is integral in rotation with the helix 1.
- the cylindrical inner surface of the central ring 4 has, for this purpose, angularly spaced ribs 13 oriented parallel to its axis, while the cylindrical outer surface of the rear part 10 of the hub 9 has grooves 14 angularly spaced in which are engaged the ribs 13.
- the front part 12 of the clamping hub 10 has a conically shaped front portion 12a disposed at the front of the truncated cone 6 and forming therewith an air inlet cone 6-12a. Said front portion 12a forming the apex of this air intake cone.
- the locking of the two parts 11, 12 of the clamping hub 10 in the clamping position is preferably obtained by a forced engagement of the rear part 11 of said hub 10 in the front piece 12 of the latter.
- the hub 10 has an axial bore 15 for housing the end 16a of the shaft of a drive motor 16, the end of the shaft being secured to the front piece 12 of the hub 10 by forced engagement. It is understood that the shaft 16 is thus integral in rotation with the hub 10 which is itself integral in rotation with the propeller 1 itself.
- the portable blower according to the invention is of the type comprising an axial fan.
- this blower is remarkable in that the axial blower has the important characteristic features previously described, or results from the implementation of the method according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1101102A FR2973847B1 (fr) | 2011-04-11 | 2011-04-11 | Helice de generateur de flux d'air pulse, en particulier pour souffleur portatif. |
PCT/FR2012/000128 WO2012140336A1 (fr) | 2011-04-11 | 2012-04-05 | Hélice de générateur de flux d'air puisé, en particulier pour souffleur portatif. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2697517A1 true EP2697517A1 (fr) | 2014-02-19 |
EP2697517B1 EP2697517B1 (fr) | 2016-03-16 |
Family
ID=46085655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12721327.0A Active EP2697517B1 (fr) | 2011-04-11 | 2012-04-05 | Hélice de générateur de flux d'air puisé, en particulier pour souffleur portatif. |
Country Status (7)
Country | Link |
---|---|
US (1) | US10001135B2 (fr) |
EP (1) | EP2697517B1 (fr) |
JP (1) | JP5992503B2 (fr) |
CN (1) | CN103562559B (fr) |
DK (1) | DK2697517T3 (fr) |
FR (1) | FR2973847B1 (fr) |
WO (1) | WO2012140336A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2973815B1 (fr) * | 2011-04-07 | 2014-08-29 | Pellenc Sa | Souffleur electroportatif autonome a vitesse de sortie d'air modulable |
EP2884052B1 (fr) * | 2013-12-13 | 2018-02-21 | Siemens Aktiengesellschaft | Rotor pour une turbomachine avec bague d'écoulement fermée profilée et son procédé de fabrication |
JP6309884B2 (ja) * | 2014-11-25 | 2018-04-11 | 三菱重工業株式会社 | インペラ、及び回転機械 |
KR102267854B1 (ko) | 2014-11-25 | 2021-06-22 | 삼성전자주식회사 | 데이터 스케줄링 및 전력 제어를 위한 방법 및 그 전자장치 |
USD773632S1 (en) * | 2015-11-10 | 2016-12-06 | Unada Co. Ltd. | Fan impeller |
CA2966053C (fr) * | 2016-05-05 | 2022-10-18 | Tti (Macao Commercial Offshore) Limited | Ventilateur a flux melange |
US10738630B2 (en) * | 2018-02-19 | 2020-08-11 | General Electric Company | Platform apparatus for propulsion rotor |
US11486412B1 (en) * | 2019-03-08 | 2022-11-01 | Delta T, Llc | Fan blade retention system and related methods |
CN112797022B (zh) * | 2020-12-21 | 2022-06-28 | 珠海格力电器股份有限公司 | 一种风叶组件及具有它的电机 |
CN115405538A (zh) * | 2021-05-28 | 2022-11-29 | 冷王公司 | 高效轴流式风扇 |
WO2023064213A1 (fr) * | 2021-10-11 | 2023-04-20 | Milwaukee Electric Tool Corporation | Ventilateur pour soufflerie portative |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2270574A (en) * | 1937-08-25 | 1942-01-20 | Casco Products Corp | Fan |
US2960939A (en) * | 1958-03-10 | 1960-11-22 | Firm Amag Hilpert Pegnitzhutte | Rotor attachment for centrifugal pumps |
US3285187A (en) * | 1965-11-05 | 1966-11-15 | Msl Ind Inc | Impeller for use in centrifugal pump or blower and a method of manufacture thereof |
DE2621201C3 (de) * | 1976-05-13 | 1979-09-27 | Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg | Laufrad für eine Strömungsmaschine |
DE2855909C2 (de) * | 1978-12-23 | 1984-05-03 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Axial oder halbaxialdurchströmtes Lauf- oder Vorleitrad mit in Strömungsrichtung zunehmendem Nabendurchmesser, insbesondere zur Kühlung von Brennkraftmaschinen in Fahrzeugen |
JPS5865999A (ja) * | 1981-10-12 | 1983-04-19 | Nissan Motor Co Ltd | 斜流型フアン |
US5573376A (en) * | 1995-09-29 | 1996-11-12 | Sundstrand Corporation | Bladed device and method of manufacturing same |
US6290467B1 (en) * | 1999-12-03 | 2001-09-18 | American Standard International Inc. | Centrifugal impeller assembly |
JP2001304183A (ja) * | 2000-04-19 | 2001-10-31 | Isuzu Motors Ltd | テーパー形状のハブを有する冷却ファン |
JP4037084B2 (ja) * | 2000-11-02 | 2008-01-23 | 株式会社共立 | 中空品成形法によって組立てるためのブロワファン分割体 |
TW514353U (en) * | 2002-03-28 | 2002-12-11 | Delta Electronics Inc | Composite heat-dissipating device |
DE102004038494A1 (de) | 2004-08-07 | 2006-03-16 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben eines Sensorsystems |
US20080022481A1 (en) * | 2006-07-31 | 2008-01-31 | Roland John Reeves | Leaf removal system |
CN201003510Y (zh) * | 2007-01-08 | 2008-01-09 | 杨圣安 | 叶轮组 |
DE102007055614A1 (de) * | 2007-11-20 | 2009-05-28 | Mann + Hummel Gmbh | Verdichterrad eines Radialverdichters und Verfahren zur Herstellung eines solchen Verdichterrades |
DE102009044015A1 (de) * | 2008-09-18 | 2010-04-01 | Yang, Sheng-An, Dashu Hsiang | Kombinierbares Flügelrad |
US8147208B2 (en) * | 2009-02-25 | 2012-04-03 | Hamilton Sundstrand Corporation | Axially segmented impeller |
IT1396350B1 (it) * | 2009-10-26 | 2012-11-19 | Spal Automotive Srl | Ventilatore assiale |
DE202009016741U1 (de) * | 2009-12-03 | 2010-04-08 | Asia Vital Components Co., Ltd., Hsin Chuan City | Schaufelrad |
US8727729B2 (en) * | 2010-06-29 | 2014-05-20 | Turbocam, Inc. | Method for producing a shrouded impeller from two or more components |
US8690552B2 (en) * | 2010-11-15 | 2014-04-08 | Forcecon Technology Co., Ltd. | Compact and strengthened rotor assembly of a radiator fan |
-
2011
- 2011-04-11 FR FR1101102A patent/FR2973847B1/fr active Active
-
2012
- 2012-04-05 EP EP12721327.0A patent/EP2697517B1/fr active Active
- 2012-04-05 JP JP2014504368A patent/JP5992503B2/ja not_active Expired - Fee Related
- 2012-04-05 CN CN201280017164.4A patent/CN103562559B/zh active Active
- 2012-04-05 DK DK12721327.0T patent/DK2697517T3/en active
- 2012-04-05 WO PCT/FR2012/000128 patent/WO2012140336A1/fr active Application Filing
- 2012-04-05 US US14/110,691 patent/US10001135B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012140336A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK2697517T3 (en) | 2016-05-09 |
FR2973847B1 (fr) | 2015-10-30 |
US20140105749A1 (en) | 2014-04-17 |
WO2012140336A1 (fr) | 2012-10-18 |
JP5992503B2 (ja) | 2016-09-14 |
FR2973847A1 (fr) | 2012-10-12 |
CN103562559B (zh) | 2016-01-20 |
EP2697517B1 (fr) | 2016-03-16 |
US10001135B2 (en) | 2018-06-19 |
JP2014510876A (ja) | 2014-05-01 |
CN103562559A (zh) | 2014-02-05 |
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