DE968553C - Fans, especially for electrical machines - Google Patents

Fans, especially for electrical machines

Info

Publication number
DE968553C
DE968553C DES14402D DES0014402D DE968553C DE 968553 C DE968553 C DE 968553C DE S14402 D DES14402 D DE S14402D DE S0014402 D DES0014402 D DE S0014402D DE 968553 C DE968553 C DE 968553C
Authority
DE
Germany
Prior art keywords
wing
electrical machines
fans
fan
support ring
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
DES14402D
Other languages
German (de)
Inventor
Ing Manfred Kirsch
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
Priority to DES14402D priority Critical patent/DE968553C/en
Application granted granted Critical
Publication of DE968553C publication Critical patent/DE968553C/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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Landscapes

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

Description

Gegenstand der Erfindung ist ein Lüfter, wie er z. B. bei elektrischen Maschinen zur Kühlung verwendet wird. Die bisherige Herstellung solcher Lüfter, die im wesentlichen aus einer von einer Nabo getragenen Scheibe und einem dieser Scheibe gegenüberstehenden Stützring bestehen, zwischen denen die Flügel durch Nieten, Schweißen usw. befestigt sind, bedingt großen Werkstoffabfall und ziemlich umständliche Fertigungsarbeit.The invention relates to a fan as it is, for. B. in electrical Machines used for cooling. The previous production of such fans, which essentially consists of a disk carried by a Nabo and one of these Support ring opposite the washer, between which the wings are riveted, Welding, etc. are attached, requires a large waste of material and quite cumbersome Manufacturing work.

Gemäß der Erfindung besteht der der Flügeltragscheibe des Lüfters gegenüberliegende Stützring nicht wie üblich aus einem für sich hergestellten Ringteil, sondern ist durch die in der Umfangsrichtung verlängerten freien Enden der einzelnen Flügel gebildet, die bis zum nächsten Flügel reichen und mit diesem verbunden sind, so daß sie in ihrer Gesamtheit einen geschlossenen Kranz bilden.According to the invention, there is the wing support disk of the fan opposite support ring not, as usual, from a ring part produced for itself, but is through the extended in the circumferential direction free ends of the individual Wings formed that extend to the next wing and are connected to it, so that in their entirety they form a closed wreath.

In der Zeichnung ist die Erfindung beispielsweise dargestellt. r ist die die Flügel tragende Scheibe des Lüfters, die eine Ausnehmung 2 zur Befestigung auf einer Nabe besitzt. 3 sind die Lüfterflügel, von denen jeder mit einer in der Umfangsrichtung abgekröpften Verlängerung q. versehen. ist, die bis zum nächsten Flügel reicht und mit diesem bei 5, wie gezeigt, durch Niete verbunden ist. Auf diese Weise läßt sich ein zusammenhängender Stützring für die Lüfterflügel erhalten, wobei insbesondere das Herausstanzen oder Herausschneiden dieses Ringes als Ganzes aus einem entsprechend großen Blechstück entfällt und zugleich auch der damit verbundene Werkstoffabfall erspart wird.In the drawing, the invention is shown as an example. r is the disc of the fan carrying the blades, which has a recess 2 for attachment owns on a hub. 3 are the fan blades, each with one in the Circumferential cranked extension q. Mistake. is that until the next Wing extends and is connected to this at 5, as shown, by rivets. on in this way a coherent support ring for the fan blades can be obtained, in particular the punching out or cutting out of this ring as a whole from a correspondingly large piece of sheet metal is omitted and at the same time also the one associated with it Material waste is saved.

Die Flügel können wie bisher durch Ausstanzen und Kröpfen hergestellt werden, nur mit dem Unterschied, daß der eine Flügelschenkel imwesentlichen um den Flügelabstand länger sein muß, was sich praktisch ohne Vergrößerung des Werkstoffabfalls und ohne Komplizierung der Flügelherstellung durchführen läßt.As before, the wings can be produced by punching and cranking only with the difference that one wing limb is essentially around the The wing spacing must be longer, which can be achieved with practically no increase in the amount of material waste and can be carried out without complicating the production of the wing.

Um eine bündige äußere Oberfläche des Stützringes zu erhalten, können die Flügel an der Abkröpfstelle mit einem kleinen Absatz versehen werden, in den das freie Ende des Nachbarflügels ver. senkt eingreift.To get a flush outer surface of the support ring, you can the wings are provided with a small paragraph at the abutment point, in the the free end of the adjacent wing is lowered.

Claims (1)

PATENTANSPRUCH: Lüfter, insbesondere für elektrische Maschinen, dadurch gekennzeichnet, daß der der Flügeltragscheibe gegenüberliegende Stützring für die Flügel durch die verlängerten, in die Umfangsrichtung abgekröpften freien Enden der Flügel gebildet ist, die je bis zum nächsten Flügel reichen und mit diesem verbunden sind. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 370 8q.5.PATENT CLAIM: Fan, in particular for electrical machines, thereby characterized in that the support ring opposite the wing support disc for the Wing through the extended free ends bent in the circumferential direction the wing is formed, each of which extends to the next wing and is connected to it are. Documents considered: German Patent No. 370 8q.5.
DES14402D 1943-10-10 1943-10-10 Fans, especially for electrical machines Expired DE968553C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES14402D DE968553C (en) 1943-10-10 1943-10-10 Fans, especially for electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES14402D DE968553C (en) 1943-10-10 1943-10-10 Fans, especially for electrical machines

Publications (1)

Publication Number Publication Date
DE968553C true DE968553C (en) 1958-03-06

Family

ID=7474566

Family Applications (1)

Application Number Title Priority Date Filing Date
DES14402D Expired DE968553C (en) 1943-10-10 1943-10-10 Fans, especially for electrical machines

Country Status (1)

Country Link
DE (1) DE968553C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236871A (en) * 1978-01-03 1980-12-02 Johnston Brothers (Engineering) Limited Centrifugal fan impellers with blades secured between plates
EP0133845A2 (en) * 1983-08-01 1985-03-06 CORAL S.p.A. Rotor for centrifugal compressors and fans

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE370845C (en) * 1920-12-24 1923-03-08 Siemens Schuckertwerke G M B H Fan, especially for electrical machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE370845C (en) * 1920-12-24 1923-03-08 Siemens Schuckertwerke G M B H Fan, especially for electrical machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236871A (en) * 1978-01-03 1980-12-02 Johnston Brothers (Engineering) Limited Centrifugal fan impellers with blades secured between plates
EP0133845A2 (en) * 1983-08-01 1985-03-06 CORAL S.p.A. Rotor for centrifugal compressors and fans
EP0133845A3 (en) * 1983-08-01 1985-07-10 Coral S.P.A. Rotor for centrifugal compressors and fans

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