EP0175809B1 - Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln - Google Patents

Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln Download PDF

Info

Publication number: EP0175809B1
Authority: EP; European Patent Office
Prior art keywords: rotor; hub; rotor hub; slot; outer edge
Prior art date: 1984-09-27
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

EP19840111563

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0175809A1 (de

Inventor

Gert Hecht

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.)

1984-09-27

Filing date

1984-09-27

Publication date

1987-07-08

1984-09-27 Application filed by Siemens AG filed Critical Siemens AG

1984-09-27 Priority to DE8484111563T priority Critical patent/DE3464645D1/de

1984-09-27 Priority to EP19840111563 priority patent/EP0175809B1/de

1985-09-12 Priority to DK414785A priority patent/DK160955C/da

1986-04-02 Publication of EP0175809A1 publication Critical patent/EP0175809A1/de

1987-07-08 Application granted granted Critical

1987-07-08 Publication of EP0175809B1 publication Critical patent/EP0175809B1/de

Status Expired legal-status Critical Current

Links

238000004519 manufacturing process Methods 0.000 description 2
230000001419 dependent effect Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
238000009423 ventilation Methods 0.000 description 1

Images

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
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
- 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
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
- 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
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources

Definitions

the invention relates to an impeller for an axial fan with individually adjustable blades according to the preamble of claim 1; such an impeller is known from GB-A-853 564.
U-shaped wire brackets are provided for the actual operational fixing of the blades in the impeller hub, which comprise the plug pins inserted into the slot holes on their axially free side and by screwing their free leg ends in the impeller hub can be tightened against the spigot.
a collar radially overlapping the slot hole serves for the radial, positive guidance of the blades during their adjustment before the actual fixing by tightening the U-shaped wire bracket.
each blade is inserted radially with its plug pin into a bore in the outer edge of the impeller hub;
a screw can be screwed from the inner surface of the outer edge of the impeller hub into a blind hole with a cut thread in the axis of rotation of the plug-in pin;
a locking washer and a washer with a locking pin protruding radially against the locking washer and the foot surface of the pivot pin are arranged between the screw head and the lower foot surface of the plug pin pin holes parallel to the axis of rotation can be inserted in the foot surface of the plug pin and the locking washer.
the impeller is to be significantly simplified with regard to the manufacture and reliable assembly of its individual components.
a clear planar contact between the corresponding hub part and blade attachment part over the entire wing adjustment area can be ensured in a simple manner that, according to one embodiment of the invention, the inner surface of the outer edge of the impeller hub in the manner of a polygon corresponding to the number of blades with contact surfaces for the parts to be determined the mounting flange is formed.
a particularly simple screw fastening of the blades via the mounting flanges formed on their trunnions in the outer edge of the impeller hub is possible in that the screws are each provided with the fastening flange against the inner surface of the outer edge of the impeller hub, which are tightened by nuts on the inner surface attached side guide bars can be inserted against rotation.
a further advantageous embodiment of the invention is characterized by a hub ring that can be plugged onto the impeller hub from axially backwards with axial counter-slot openings to the axial slot openings provided in the impeller hub with the axially inserted pivot pins.
the impeller contains, inter alia, an inner hub body 14 which is screwed onto the drive shaft 15 and the actual impeller hub 4 with the inserted blades 1 and a hub ring 12 which is screwed onto the inner hub body 14.
a plug pin 11 with a mounting flange is integrally attached to the bottom of each blade 1 2 molded. To hold the blades 1 via their plug pins 11 and their mounting flanges 2 - as can be seen in particular from FIG.
Each blade insertion point is assigned a bore 7 in the outer edge of the impeller hub 4 and an elongated hole 21 in the fastening flange 2 through which a screw 3 can be inserted, which is supported with its screw head on the outer surface 41 of the outer edge of the impeller hub 4 and one radially Has on the inside of the mounting flange 2 nut 31 which is secured against twisting by two lateral guide webs 8, 8 formed on the mounting flange 2.
each blade e.g. B. by hand, set to the desired blade angle
the screw 3 and the elongated hole 21 move rotatively to each other.
the screw 3 is tightened from the outside or screwed into the non-rotatably mounted nut 31 and thus the blade 1 is fixed in its intended position.
4 setting markings 9 are provided on the impeller hub in the area of the tip of the blade 1 which moves during the adjustment.
the slot openings 5 can be closed in the sense of an air line that is as trouble-free as possible and targeted air delivery can be ensured on the downstream side; in the same way as provided for the impeller hub 4, 12 markings can also be provided on the hub ring.
the adjustable blade attachment receiving actual impeller hub 4 is a further manufacturing and assembly simplification possible, since the necessary variants of Components can remain limited to the inner hub body 14 designed as a turned part.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)

EP19840111563 1984-09-27 1984-09-27 Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln Expired EP0175809B1 (de)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
DE8484111563T DE3464645D1 (en)	1984-09-27	1984-09-27	Rotor for an axial-flow ventilating fan having individually adjustable blades
EP19840111563 EP0175809B1 (de)	1984-09-27	1984-09-27	Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln
DK414785A DK160955C (da)	1984-09-27	1985-09-12	Skovlhjul til en aksialventilator med enkeltvis indstillelige skovle

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP19840111563 EP0175809B1 (de)	1984-09-27	1984-09-27	Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln

Publications (2)

Publication Number	Publication Date
EP0175809A1 EP0175809A1 (de)	1986-04-02
EP0175809B1 true EP0175809B1 (de)	1987-07-08

Family

ID=8192181

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19840111563 Expired EP0175809B1 (de)	1984-09-27	1984-09-27	Laufrad für einen Axialventilator mit einzeln einstellbaren Schaufeln

Country Status (3)

Country	Link
EP (1)	EP0175809B1 (da)
DE (1)	DE3464645D1 (da)
DK (1)	DK160955C (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102007034618A1 (de)	2007-07-25	2009-01-29	Georg Hamann	Vorrichtung zur Erzeugung von Energie aus einer Fluidströmung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB114934A (da) *		1900-01-01
CH260170A (fr) *	1947-04-08	1949-02-28	Mertz Alfred	Roue pour ventilateur hélicoïdal.
GB634486A (en) *	1947-12-11	1950-03-22	Walker Brothers Wigan Ltd	Improvements in or relating to axial flow ventilating fans
GB826519A (en) *	1957-05-10	1960-01-13	Air Control Installations Ltd	Improvements in or relating to axial flow fans
GB853564A (en) *	1958-07-17	1960-11-09	Roy William Brown A M I Mech E	Improvements in or relating to axial flow fans
FR1207918A (fr) *	1958-07-24	1960-02-19	Hudson Engineering Corp	Dispositif d'accouplement perfectionné pour ailettes de ventilateur
DE1503628B2 (de) *	1965-10-22	1974-06-27	Turbon Ventilatoren- Und Apparatebau Gmbh, 1000 Berlin	Flügelrad
DE1426883A1 (de) *	1965-12-17	1969-01-23	Voith Getriebe Kg	Schaufelbefestigung
DE2054826A1 (de) *	1970-11-07	1972-05-10	Siemens Ag	Verfahren zum Herstellen von Klemmringen und Nabenkörpern aus Guß oder Kunststoff für Flügelräder
US3984194A (en) *	1974-04-12	1976-10-05	Aktiebolaget Svenska Flaktfabriken	Axial flow fans
DE2719099C2 (de) *	1977-04-29	1983-09-29	Helios-Apparatebau KG, Müller & Co, 7730 Villingen-Schwenningen	Lüfterrad

1984
- 1984-09-27 EP EP19840111563 patent/EP0175809B1/de not_active Expired
- 1984-09-27 DE DE8484111563T patent/DE3464645D1/de not_active Expired
1985
- 1985-09-12 DK DK414785A patent/DK160955C/da not_active IP Right Cessation

Also Published As

Publication number	Publication date
EP0175809A1 (de)	1986-04-02
DK414785A (da)	1986-03-28
DE3464645D1 (en)	1987-08-13
DK414785D0 (da)	1985-09-12
DK160955C (da)	1991-10-28
DK160955B (da)	1991-05-06

Legal Events

Date	Code	Title	Description
1986-02-14	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1986-04-02	17P	Request for examination filed	Effective date: 19860128
1986-04-02	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI NL
1986-10-01	17Q	First examination report despatched	Effective date: 19860813
1987-05-23	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1987-07-08	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI NL
1987-08-13	REF	Corresponds to:	Ref document number: 3464645 Country of ref document: DE Date of ref document: 19870813
1987-08-28	ET	Fr: translation filed
1987-09-30	ITF	It: translation for a ep patent filed
1988-05-04	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1988-05-04	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1988-06-22	26N	No opposition filed
1991-09-30	ITTA	It: last paid annual fee
1998-08-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19980817 Year of fee payment: 15
1998-09-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19980916 Year of fee payment: 15
1998-09-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19980921 Year of fee payment: 15
1998-12-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19981215 Year of fee payment: 15
1999-09-27	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990927
1999-09-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990930
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2000-05-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2000-05-17	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19990927
2000-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000531
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