WO2003019014A1 - Wirkungsgradverbesserungssmethode von trag flügel - Google Patents
Wirkungsgradverbesserungssmethode von trag flügel Download PDFInfo
- Publication number
- WO2003019014A1 WO2003019014A1 PCT/GR2002/000046 GR0200046W WO03019014A1 WO 2003019014 A1 WO2003019014 A1 WO 2003019014A1 GR 0200046 W GR0200046 W GR 0200046W WO 03019014 A1 WO03019014 A1 WO 03019014A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow
- wing
- propeller
- frustoconical
- efficiency
- 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.)
- Ceased
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
- F04D29/32—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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps
Definitions
- the invention relates to the force production method with the use of hydrofoil (or propeller wing), force which arises from the speed (current) and as a drive for ships, aircraft, helicopters, etc. is used.
- the invention relates to the claw, which - according to the D.Bernoulli law - arises from the pressure difference between the two surfaces of a wing due to a flow.
- the claw which - according to the D.Bernoulli law - arises from the pressure difference between the two surfaces of a wing due to a flow.
- two or more wings move in gas or liquid. Then there are resistance forces on the underside and negative pressure forces on the top.
- the method belongs to the systems where we offer energy to get strength.
- the ratio claw to power is a coefficient characteristic of the efficiency of the dynamic system. For most fans, the efficiency coefficient (produced power through the offered power) is e.g. Wing very small and you can certainly improve it.
- the purpose of the method is to improve the efficiency coefficient of blades and propellers, and this is achieved after use by using the underside separately or in different combinations. For example, another cut (Airfoil) gets a wind turbine than a water propeller.
- Airfoil gets a wind turbine than a water propeller.
- the force produced from this type arises in two ways. By moving a surface in gas or liquid and the opposite when the surface is in a flow. Compination of both is of course possible. The method evaluates both ways and pays a lot of attention to the viscosity.
- Airfoils or propellers which, moving or not working, are provided with top edge (cut 3.), so that the contact breaks flow surface and leads to the formation of a vortex, which increases the lift.
- Circular-butt-blunted wings (you can treat them as two-dimensional) that (in relation to a current) under which three different ways and their combinations work.
- the first two assume a central outgoing flow and offer to reuse the flow.
- the third is applied to circular propeller flow.
- Fig. 2 The vortex occurs due to the viscosity, and the method exploits this property in two ways.
- the viscosity is required up to the end of the propeller radius and not further (flow environment), because it reduces the flow speed (hence the force) and at the same time increases the circulation speed of the flow, which requires more power and does not take up too much force.
- the method proposes frustoconical propellers (drawing 2), so that the entrance surface of the propeller flow gets a continuous reduction up to the exit, i.e. in the area where the current accelerates. Because the air viscosity is much lower than that of water, water propellers (recommended) are made up of gas around the flow (behind the propeller). All of this individually or in combinations improves efficiency.
- the surface vortex In a wing according to the method, which either moves in gas or liquid and participates in vortex formation with the top edge, or is in a current and functions as a resistance surface or vortex formation surface (possible combinations), the surface vortex, if it exists, is not considered to be a mathematical circulation orbiting or going through the wing (Phd GA Georgadopoulos Aerodynamic II pages 13-16 Athens 1997), but calculated as real mass per unit of time over the wing
- Section 1 Shows a known classic wing cut (Airfoil) Section 2. Shows combination of a propeller flow with a truncated cone according to the invention (12).
- Section 3 Shows Compination underside of a wing (12) according to the invention.
- Section 4. Shows combination of two wings (12) according to the invention.
- Section 5 Shows the reuse of a flow that only reaches the top of a wing (12) according to the invention.
- Section 6. Shows three wings (12) according to the invention which only produce resistance.
- Drawing 7. Shows sections 6 and 8 from above.
- Section 8. Shows a fan (central outgoing flow) with composite frustoconical blades (12)
- drawing 8 can work with air or water.
- the central outgoing flow with the help of the motor (14) comes from the pump (11) onto the frustoconical surface of the first wing (12) and produces resistance force.
- the flow height and the angle (between flow and wing) determine the maximum wing width.
- most of the flow (the height of which decreases with the radius) is filled via one (or more) ellipse wings, and the angle between the flow and the wing is increased.
- the total force required to lift is zero because of the circular symmetry.
- the wings (12) are attached to the motor (14) by flow guides (13) which at the same time counteract the tendency of the construction to rotate (torque). Similar construction (drawing 5) can use the main flow again (turning the pump)
- Drawing 2. shows a circular wing (12) which (according to D.Beraoulli) ve ⁇ rn ⁇ ert the input surface of the fan to the outlet (acceleration distance).
- the application improves the efficiency of the fan because it differs from the (viscosity) environmental disadvantages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02755372A EP1427943A1 (de) | 2001-08-29 | 2002-08-28 | Wirkungsgradverbesserungssmethode von tragflügeln |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR20010100407 | 2001-08-29 | ||
| GR20010100407A GR1003999B (el) | 2001-08-29 | 2001-08-29 | Μεθοδος παραγωγης δυναμης με χρηση πτερυγων (db). |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003019014A1 true WO2003019014A1 (de) | 2003-03-06 |
Family
ID=10944806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GR2002/000046 Ceased WO2003019014A1 (de) | 2001-08-29 | 2002-08-28 | Wirkungsgradverbesserungssmethode von trag flügel |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1427943A1 (de) |
| GR (1) | GR1003999B (de) |
| WO (1) | WO2003019014A1 (de) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB750305A (en) * | 1953-02-05 | 1956-06-13 | Rolls Royce | Improvements in axial-flow compressor, turbine and like blades |
| US3014640A (en) * | 1958-06-09 | 1961-12-26 | Gen Motors Corp | Axial flow compressor |
| DE1187432B (de) * | 1960-11-19 | 1965-02-18 | Theodor Helmbold Dr Ing | Diffusor mit Fuehrungsmulden fuer die Hauptstroemung beruehrende Potentialwirbel |
| EP0224398A1 (de) * | 1985-10-23 | 1987-06-03 | ETUDES TECHNIQUES ET REPRESENTATIONS INDUSTRIELLES E.T.R.I Société Anonyme | Gebläse mit Mitteln zur Verminderung des Lärms seiner rotierenden Flügel |
| DE4220960A1 (de) * | 1992-06-25 | 1994-01-05 | Turbowerke Meisen Ventilatoren | Schaufeln für Arbeitsmaschinen |
| DE19614420A1 (de) * | 1996-04-12 | 1997-10-16 | Aloys Wobben | Rotorblatt und Windenergieanlage mit einem Rotorblatt |
| US6024536A (en) * | 1996-11-21 | 2000-02-15 | Zexel Corporation | Device for introducing and discharging cooling air |
-
2001
- 2001-08-29 GR GR20010100407A patent/GR1003999B/el unknown
-
2002
- 2002-08-28 WO PCT/GR2002/000046 patent/WO2003019014A1/de not_active Ceased
- 2002-08-28 EP EP02755372A patent/EP1427943A1/de not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB750305A (en) * | 1953-02-05 | 1956-06-13 | Rolls Royce | Improvements in axial-flow compressor, turbine and like blades |
| US3014640A (en) * | 1958-06-09 | 1961-12-26 | Gen Motors Corp | Axial flow compressor |
| DE1187432B (de) * | 1960-11-19 | 1965-02-18 | Theodor Helmbold Dr Ing | Diffusor mit Fuehrungsmulden fuer die Hauptstroemung beruehrende Potentialwirbel |
| EP0224398A1 (de) * | 1985-10-23 | 1987-06-03 | ETUDES TECHNIQUES ET REPRESENTATIONS INDUSTRIELLES E.T.R.I Société Anonyme | Gebläse mit Mitteln zur Verminderung des Lärms seiner rotierenden Flügel |
| DE4220960A1 (de) * | 1992-06-25 | 1994-01-05 | Turbowerke Meisen Ventilatoren | Schaufeln für Arbeitsmaschinen |
| DE19614420A1 (de) * | 1996-04-12 | 1997-10-16 | Aloys Wobben | Rotorblatt und Windenergieanlage mit einem Rotorblatt |
| US6024536A (en) * | 1996-11-21 | 2000-02-15 | Zexel Corporation | Device for introducing and discharging cooling air |
Also Published As
| Publication number | Publication date |
|---|---|
| GR1003999B (el) | 2002-09-19 |
| EP1427943A1 (de) | 2004-06-16 |
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