DE968553C - Fans, especially for electrical machines - Google Patents
Fans, especially for electrical machinesInfo
- 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
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)
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)
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)
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 |
-
1943
- 1943-10-10 DE DES14402D patent/DE968553C/en not_active Expired
Patent Citations (1)
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)
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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