WO2005083270A1 - Propeller blower, shell propeller - Google Patents
Propeller blower, shell propeller Download PDFInfo
- Publication number
- WO2005083270A1 WO2005083270A1 PCT/EP2005/001976 EP2005001976W WO2005083270A1 WO 2005083270 A1 WO2005083270 A1 WO 2005083270A1 EP 2005001976 W EP2005001976 W EP 2005001976W WO 2005083270 A1 WO2005083270 A1 WO 2005083270A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blades
- rotation
- propeller
- impeller disk
- blade
- Prior art date
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
- 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
- F04D29/30—Vanes
-
- 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
Definitions
- the invention relates to a propeller blower for the essentially axial outflow direction of gaseous or liquid media with a hub, which is rotatably driven about the axis of rotation and is designed to limit the flow of flow on the inside to the impeller disk, with blades which are curved in the flow direction in the blade area between the blade inlet edge and the blade outlet edge.
- a known fan of this type (100 20 878 C2) is provided on the outside with a guide surface. As a result, only a narrowly limited suction area in the axial direction is possible.
- the object of the present invention is to design a propeller fan of this type in such a way that the medium drawn in flows in a hemisphere and runs in the axial direction, so that e.g. rising vapors in kitchens without extractor hood can be trapped.
- each conveyor blade is designed in the form of a conch shell with an elongated extension, and is connected in one end region to the above-mentioned impeller disc and is perpendicular to the impeller disc at the connecting line, while the other end region is aligned with increasing radial distance in the axial direction.
- the blades are concave in the direction of rotation.
- the blades are similar in their elongated, oval extension to the pearl or river pearl mussel (Margaritana margaritifera).
- the hub or impeller disk can have a flat shape, or it can be designed as an ellipsoid of revolution or parabolic or hyperbolic.
- the propeller fan presented accelerates the medium primarily in the radial direction inside the shaft.
- the described concave buckets in the direction of rotation guide the outwardly flowing medium on the outer edge in the axial direction, so that a border of the fan, for. B. through a pipe, is not necessary.
- a simple calculation and the experiment even show that medium on the outer edge is sucked in.
- the peripheral speed at the outer edge is namely greater than the radial speed of the medium to be achieved by centrifugal forces. So z. B. ascending warm air in kitchens without extractor hood.
- the shape of the blades also does not allow simple, noise-generating vibrations of the blades.
- Fig. 1 shows a perspective view of an impeller disk with only one blade for a propeller fan according to the invention.
- FIG. 2 shows a perspective view of the blade shown in FIG. 1, detached from the impeller disk.
- Fig. 3 shows the impeller disk with notches and a blade.
- FIG. 4 shows a sectional view according to A-B of FIG. 2.
- FIG. 5 shows a diagrammatic view of a further propeller fan according to the invention.
- the impeller 2 is rotatably driven about the axis of rotation 3.
- the direction of rotation is indicated by arrow 5.
- FIGS. 1 to 3 For the sake of clarity, only one blade 1 is shown in FIGS. 1 to 3.
- the blade 1 has essentially the shape of a conch shell and is connected in one piece to the impeller disk 2, or is inserted or glued there. It can be injection molded or cast parts; it is essential that the blade 1 and the impeller disk 2 have a so-called penetration, so that a base line 6 is formed which merges into the trailing edge of the blade 1 outside the penetration.
- the opposite edge to the bottom line 6 is the blade leading edge 22, at which the medium flows in. It can be seen from FIG. 1 by arrows 30 that the blade leading edge extends into the outer region.
- the blade 1 is radially aligned in the area 20, while it is axially aligned in the area 21.
- FIG. 2 shows again the special shape of the blade 1, the section A-B from FIG. 2 being shown in FIG. 4.
- the angle 7 in FIG. 4 represents the angle of attack between the vector 5 of the rotational speed and the edge direction of the blade 1.
- the proposed propeller blower can also be used to propel water and aircraft.
- a propeller according to the invention is presented in Fig. 5, which also has the conveying medium, e.g. Air or water, still sucking.
- the conveying medium e.g. Air or water
- a particularly advantageous arrangement of this new propeller when extracting e.g. of air or liquids from a room under pressure difference results when the location of the outer edges or propeller blades 1, at which the suction changes to drainage, acc. Fig. 5 is exactly in a hole in the plane of the outer wall 10 of the room to be extracted. The level of the outer wall is then gem. 5 near the outermost edge of the propeller blades 1. Arrows 30 indicate the flow direction. 5 additionally shows that the edges of the propeller blades 1 can be rounded off, so that the propeller blades have no corners, as shown in FIG. 2 below.
- the conveying medium e.g. Air or water
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/563,420 US20080050239A1 (en) | 2004-03-01 | 2005-02-25 | Propeller Blower, Shell Propeller |
EP05715528A EP1721080A1 (en) | 2004-03-01 | 2005-02-25 | Propeller blower, shell propeller |
JP2006527430A JP2007506037A (en) | 2004-03-01 | 2005-02-25 | Propeller blower and shell propeller |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004010457.3 | 2004-03-01 | ||
DE200410010457 DE102004010457B3 (en) | 2004-03-01 | 2004-03-01 | Propeller fan with shell propeller for blowing air has each blade in form of shell bowl extending longitudinally |
DE200410043618 DE102004043618A1 (en) | 2004-09-07 | 2004-09-07 | Propeller blower for axial flow of gas or liquid media blows out suctioned air using impeller disc with convex shell blades which extend in a radial direction from the disc |
DE102004043618.5 | 2004-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005083270A1 true WO2005083270A1 (en) | 2005-09-09 |
Family
ID=34913345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/001976 WO2005083270A1 (en) | 2004-03-01 | 2005-02-25 | Propeller blower, shell propeller |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080050239A1 (en) |
EP (1) | EP1721080A1 (en) |
JP (1) | JP2007506037A (en) |
WO (1) | WO2005083270A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE723635A (en) * | 1968-11-08 | 1969-04-16 | ||
GB2041103A (en) * | 1978-12-26 | 1980-09-03 | Nissan Motor | A radiator cooling fan |
US5910045A (en) * | 1995-09-07 | 1999-06-08 | Daikin Industries, Ltd. | Air discharge unit for underfloor air conditioning and underfloor air conditioning system using same |
US20020085935A1 (en) * | 2000-12-28 | 2002-07-04 | Wen-Hao Chuang | Dual-effect heat dissipating fan |
US20030077175A1 (en) * | 2000-04-28 | 2003-04-24 | Thomas Marlander | Blower especially for ventilating electronic devices |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2212555A (en) * | 1938-01-20 | 1940-08-27 | Heinze Electric Company | Fan construction |
US2658455A (en) * | 1948-02-26 | 1953-11-10 | Laval Steam Turbine Co | Impeller with center intake |
US2709035A (en) * | 1950-11-13 | 1955-05-24 | Gilbert Co A C | Air streaming fan |
US4063852A (en) * | 1976-01-28 | 1977-12-20 | Torin Corporation | Axial flow impeller with improved blade shape |
DE3428650C2 (en) * | 1984-08-03 | 1986-08-14 | Braun Ag, 6000 Frankfurt | Hair dryer with axial fan |
US5393199A (en) * | 1992-07-22 | 1995-02-28 | Valeo Thermique Moteur | Fan having a blade structure for reducing noise |
US5320493A (en) * | 1992-12-16 | 1994-06-14 | Industrial Technology Research Institute | Ultra-thin low noise axial flow fan for office automation machines |
US6544010B1 (en) * | 2000-06-09 | 2003-04-08 | Lg Electronics Co., Ltd. | Axial flow fan with brushless direct current motor |
-
2005
- 2005-02-25 EP EP05715528A patent/EP1721080A1/en not_active Withdrawn
- 2005-02-25 WO PCT/EP2005/001976 patent/WO2005083270A1/en not_active Application Discontinuation
- 2005-02-25 US US10/563,420 patent/US20080050239A1/en not_active Abandoned
- 2005-02-25 JP JP2006527430A patent/JP2007506037A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE723635A (en) * | 1968-11-08 | 1969-04-16 | ||
GB2041103A (en) * | 1978-12-26 | 1980-09-03 | Nissan Motor | A radiator cooling fan |
US5910045A (en) * | 1995-09-07 | 1999-06-08 | Daikin Industries, Ltd. | Air discharge unit for underfloor air conditioning and underfloor air conditioning system using same |
US20030077175A1 (en) * | 2000-04-28 | 2003-04-24 | Thomas Marlander | Blower especially for ventilating electronic devices |
US20020085935A1 (en) * | 2000-12-28 | 2002-07-04 | Wen-Hao Chuang | Dual-effect heat dissipating fan |
Non-Patent Citations (1)
Title |
---|
See also references of EP1721080A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080050239A1 (en) | 2008-02-28 |
EP1721080A1 (en) | 2006-11-15 |
JP2007506037A (en) | 2007-03-15 |
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