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DE685979C - Screw fan wheel with blades with a wing profile - Google Patents

Screw fan wheel with blades with a wing profile

Info

Publication number
DE685979C
DE685979C DEA79857D DEA0079857D DE685979C DE 685979 C DE685979 C DE 685979C DE A79857 D DEA79857 D DE A79857D DE A0079857 D DEA0079857 D DE A0079857D DE 685979 C DE685979 C DE 685979C
Authority
DE
Germany
Prior art keywords
fan wheel
blades
wing
screw fan
wing profile
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
DEA79857D
Other languages
German (de)
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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 Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of DE685979C publication Critical patent/DE685979C/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

Landscapes

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

Description

Schraubenlüfterrad mit Flügeln mit Tragflächenprofil Die Erfindung betrifft ein in beiden Drehrichtungen wirksames Schraubenlüfterrad mit Flügeln mit Tragflächenprofil und 'besteht darin, daß jeder zweite oder jeder dritte Flügel auf dem Umfang gegenüber dem Nachbarflügel um i8o° um seine radiale Mittelachse verdreht ist. Dabei ist das Rad mit mindestens sechs Flügeln ausgerüstet.Screw fan wheel with blades with aerofoil profile The invention relates to a screw fan wheel with blades that is effective in both directions of rotation Airfoil profile and 'consists in that every second or every third wing on the circumference opposite the neighboring wing by 180 ° around its radial central axis is twisted. The wheel is equipped with at least six blades.

Gegenüber bekannten Anordnungen mit zwei Flügelrädern auf gemeinsamer Antriebswelle hat das Schraubenlüfterrad gemäß der Erfindung den Vorteil wesentlicher baulicher Einfachheit bei geringster Raumbeanspruchung. Die Praxis hat außerdem gezeigt, daß das neue Schraubenlüfterrad im Wirkungsgrad den bekannten Lüfterrädern überlegen ist.Compared to known arrangements with two impellers on common Drive shaft, the screw fan wheel according to the invention has the advantage of more substantial structural simplicity with minimal space requirements. The practice also has shown that the new screw fan wheel in the efficiency of the known fan wheels is superior.

Auf der Zeichnung ist ein Ausführungsbeispiel des Schraubenlüfterrades gemäß der Erfindung in Fig. i in Stirnansicht und in Fig.2 in Seitenansicht dargestellt.In the drawing is an embodiment of the screw fan wheel according to the invention shown in Fig. i in front view and in Fig.2 in side view.

Fig. 3 zeigt die Abwicklung der Fig. i im Grundriß und Fig. q. in größerem Maßstabe ein Ausführungsbeispiel einer Flügelverbindung mit der Nabe.Fig. 3 shows the development of Fig. I in plan and Fig. Q. in larger scale an embodiment of a wing connection with the hub.

Bei dem dargestellten Schraubenlüfterrad sind an der Nabe i zwei Gruppen von Flügeln 2 und 3 gleicher Form abwechselnd so befestigt, daß jeder Flügel 2 gegenüber dem Nachbarflügel 3 um etwa i8o° um seine radiale Mittelachse verdreht ist. Die Verbindung der Flügel 2, 3 mit der Nabe i erfolgt gemäß Fig. q. dadurch, daß jeder Flügel mit einem Zapfen q. versehen ist, der in einem entsprechend ausgebildeten Lager der Nabe sitzt und hier nach seiner Einstellung durch einen Schraubenbolzen 5 festgehalten wird.In the illustrated screw fan wheel there are two groups on the hub i of wings 2 and 3 of the same shape alternately attached so that each wing 2 opposite the adjacent wing 3 is rotated by about i8o ° about its radial central axis. the Connection of the wings 2, 3 with the hub i takes place according to FIG. Q. in that everyone Wing with a tenon q. is provided in a suitably trained The hub bearing sits and here after its adjustment by a screw bolt 5 is recorded.

Die Nabe braucht nicht als Ganzes ausgebildet zu sein. Die Form der Flügel 2 kann eine andere sein als die der Flügel 3, so daß die Luftförderung nach der einen Seite mengenmäßig eine andere ist als nach der anderen Seite.The hub does not need to be designed as a whole. The shape of the Wing 2 can be different from that of the wing 3, so that the air delivery after one side is quantitatively different from the other.

Claims (2)

PATENTANSPRÜCHE: i. Schraubenlüfterrad mit Flügeln mit Tragflächenprofil, dadurch gekennzeichnet, daß jeder zweite oder jeder dritte Flügel auf dem Umfang gegenüber dem Nachbarflügel um etwa i8o° um seine radiale Mittelachse verdreht ist. PATENT CLAIMS: i. Screw fan wheel with blades with wing profile, characterized in that every second or every third wing on the circumference is rotated about its radial central axis by about 180 ° in relation to the neighboring wing. 2. Schraubenlüfterrad nach Anspruch t, dadurch gekennzeichnet, daß das Rad mit mindestens sechs Flügeln (2, 3) versehen ist.2. screw fan wheel according to claim t, characterized in that the wheel with at least six wings (2, 3) is provided.
DEA79857D 1935-07-12 1936-07-02 Screw fan wheel with blades with a wing profile Expired DE685979C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE685979X 1935-07-12

Publications (1)

Publication Number Publication Date
DE685979C true DE685979C (en) 1939-12-29

Family

ID=20315047

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA79857D Expired DE685979C (en) 1935-07-12 1936-07-02 Screw fan wheel with blades with a wing profile

Country Status (1)

Country Link
DE (1) DE685979C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969944C (en) * 1954-08-12 1958-07-31 Rudolf Hingst Dipl Ing Axial-radial blower with radial blades which have an axially flowed through blade part on their inflow side
US2870958A (en) * 1956-01-13 1959-01-27 United Aircraft Corp Mixed blade compressor
US3089314A (en) * 1961-06-08 1963-05-14 Gen Electric Fan construction
US3536417A (en) * 1965-09-22 1970-10-27 Daimler Benz Ag Impeller for axial or radial flow compressors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969944C (en) * 1954-08-12 1958-07-31 Rudolf Hingst Dipl Ing Axial-radial blower with radial blades which have an axially flowed through blade part on their inflow side
US2870958A (en) * 1956-01-13 1959-01-27 United Aircraft Corp Mixed blade compressor
US3089314A (en) * 1961-06-08 1963-05-14 Gen Electric Fan construction
US3536417A (en) * 1965-09-22 1970-10-27 Daimler Benz Ag Impeller for axial or radial flow compressors

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