DE3272588D1 - Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed - Google Patents

Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed

Info

Publication number
DE3272588D1
DE3272588D1 DE8282108470T DE3272588T DE3272588D1 DE 3272588 D1 DE3272588 D1 DE 3272588D1 DE 8282108470 T DE8282108470 T DE 8282108470T DE 3272588 T DE3272588 T DE 3272588T DE 3272588 D1 DE3272588 D1 DE 3272588D1
Authority
DE
Germany
Prior art keywords
blades
fan
longitudinal axis
remaining
stop means
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.)
Expired
Application number
DE8282108470T
Other languages
German (de)
Inventor
Gert Hecht
Manfred Dr Sellmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of DE3272588D1 publication Critical patent/DE3272588D1/en
Expired legal-status Critical Current

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).
DE8282108470T 1982-09-14 1982-09-14 Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed Expired DE3272588D1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3272588D1 true DE3272588D1 (en) 1986-09-18

Family

ID=8189226

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282108470T Expired DE3272588D1 (en) 1982-09-14 1982-09-14 Fan comprising automatically adjustable blades about its longitudinal axis to avoid undesirable rotational speed

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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
DK413983A (en) 1984-03-15
DK413983D0 (en) 1983-09-13
DK157147C (en) 1990-04-16
DK157147B (en) 1989-11-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee