DK413983A - VENTILATOR TO AVOID UNDESIRABLE SPEED AUTOMATICALLY ON A LONG-SHEET SWINGING WINGS - Google Patents
VENTILATOR TO AVOID UNDESIRABLE SPEED AUTOMATICALLY ON A LONG-SHEET SWINGING WINGS Download PDFInfo
- Publication number
- DK413983A DK413983A DK413983A DK413983A DK413983A DK 413983 A DK413983 A DK 413983A DK 413983 A DK413983 A DK 413983A DK 413983 A DK413983 A DK 413983A DK 413983 A DK413983 A DK 413983A
- Authority
- DK
- Denmark
- Prior art keywords
- blades
- remaining
- stop means
- impeller hub
- ventilator
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
- F04D29/362—Blade mountings adjustable during rotation
- F04D29/366—Adjustment by interaction of inertion and lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
Abstract
1. A fan comprising blades which can be automatically rotated about a longitudinal axis on an impeller hub of the fan, in order to avoid undesired rotation speeds, using centrifugal weights and two stop means, which are operative in different directions, characterized by the following features : a) first blades (2) are permanently arranged on the impeller hub (1) and the remaining blades (3) are mounted so as to be freely rotatable about their axes of gravity ; b) a first stop means (6) is provided which delimits the operating position of the remaining blades (3) and a second stop means (7) is provided against which the remaining blades (3) abut, in the event of a malfunction, in a position opposing the first blades (2) ; c) in an upstream region of the impeller hub (1) each of the remaining blades (3) is permanently connected to a counter-weight (5) ; d) at low starting speeds the remaining blades (3) are maintained solely by the counter-weight (5) - and at normal operating speeds additionally by the aerodynamic forces - in an operating position which is equivalent to the position of the first blades (2) (Fig. 1 to 4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP82108470A EP0103042B1 (en) | 1982-09-14 | 1982-09-14 | Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed |
| EP82108470 | 1982-09-14 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK413983D0 DK413983D0 (en) | 1983-09-13 |
| DK413983A true DK413983A (en) | 1984-03-15 |
| DK157147B DK157147B (en) | 1989-11-13 |
| DK157147C DK157147C (en) | 1990-04-16 |
Family
ID=8189226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK413983A DK157147C (en) | 1982-09-14 | 1983-09-13 | Fan with wings that are pivotal about their longitudinal axes to avoid unwanted rotational speeds |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0103042B1 (en) |
| AT (1) | ATE21438T1 (en) |
| DD (1) | DD217585A5 (en) |
| DE (1) | DE3272588D1 (en) |
| DK (1) | DK157147C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2828586B2 (en) * | 1993-12-28 | 1998-11-25 | 三菱電機株式会社 | Rotating fan |
| DE102007011990B4 (en) * | 2007-03-09 | 2019-01-10 | Tlt-Turbo Gmbh | Device for the hydraulic adjustment of the blades of an impeller of an axial fan |
| DE102008001556A1 (en) * | 2008-05-05 | 2009-11-12 | Robert Bosch Gmbh | Fan and method for operating a fan |
| CN106194832B (en) * | 2016-08-15 | 2019-02-05 | 联想(北京)有限公司 | Fluid drive apparatus and electronic equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE351781C (en) * | 1922-04-13 | Otto Kuster | Wind turbine | |
| GB719967A (en) * | 1951-06-04 | 1954-12-08 | Nordisk Ventilator | Axial-flow blower |
| DE1036780B (en) * | 1954-10-12 | 1958-08-14 | Pintsch Electro Gmbh | Device for automatically reducing the blade position with high-speed wind turbines |
| DE1034808B (en) * | 1955-02-11 | 1958-07-24 | Siemens Ag | Impeller for flow machines |
| FR1553046A (en) * | 1967-11-28 | 1969-01-10 |
-
1982
- 1982-09-14 AT AT82108470T patent/ATE21438T1/en not_active IP Right Cessation
- 1982-09-14 EP EP82108470A patent/EP0103042B1/en not_active Expired
- 1982-09-14 DE DE8282108470T patent/DE3272588D1/en not_active Expired
-
1983
- 1983-09-12 DD DD83254745A patent/DD217585A5/en not_active IP Right Cessation
- 1983-09-13 DK DK413983A patent/DK157147C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DD217585A5 (en) | 1985-01-16 |
| EP0103042B1 (en) | 1986-08-13 |
| ATE21438T1 (en) | 1986-08-15 |
| EP0103042A1 (en) | 1984-03-21 |
| DK413983D0 (en) | 1983-09-13 |
| DK157147C (en) | 1990-04-16 |
| DE3272588D1 (en) | 1986-09-18 |
| DK157147B (en) | 1989-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |