AT218664B - Impeller made of thermoplastic material for flow machines, in particular centrifugal fans - Google Patents

Impeller made of thermoplastic material for flow machines, in particular centrifugal fans

Info

Publication number
AT218664B
AT218664B AT548160A AT548160A AT218664B AT 218664 B AT218664 B AT 218664B AT 548160 A AT548160 A AT 548160A AT 548160 A AT548160 A AT 548160A AT 218664 B AT218664 B AT 218664B
Authority
AT
Austria
Prior art keywords
thermoplastic material
centrifugal fans
flow machines
impeller made
particular centrifugal
Prior art date
Application number
AT548160A
Other languages
German (de)
Inventor
Otto Dipl Kfm Kiefer
Original Assignee
Otto Dipl Kfm Kiefer
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 Otto Dipl Kfm Kiefer filed Critical Otto Dipl Kfm Kiefer
Priority to AT548160A priority Critical patent/AT218664B/en
Application granted granted Critical
Publication of AT218664B publication Critical patent/AT218664B/en

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    I aufrad aus thermoplastischem   Kunststoff für Strömungsmaschinen, insbesondere Zentrifugal-Ventilatoren   Es sind bereits Laufräder für Zentrifugal-Ventilatoren u. dgl. bekannt,   deren aus Blech bestehende Schaufeln hohl   sind sowie auch   Laufräder, die einschliesslich der vollwandige Schaufeln aus Kunststoff 
 EMI1.1 
 
Erfindungsgegenstand ein Laufrad,genommen Ist. 



     Ein Ansfuarungsbeispiel der Erfindung Ist   an Hand der Zeichnung   näher erläutert. Darin zeigen Fig. l   eine perspektivische Darstellung einer Ventilatorschaufel mit dem an die Schaufel unmittelbar anschliessenden, aus der Deckscheibe ausgerissenen Teil derselben, Fig. 2 den gleichen Gegenstand von der   Untersei-   te gesehen, Fig. 3 einen Querschnitt durch die Schaufel und Fig. 4 das Laufrad von der Unterseite gesehen. 



   Die Schaufel c Ist durch einen flachen, dünnwandigen Hohlkörper gebildet, der sich gegen den Fuss zu keilförmig verbreitert und mit Abrundungen a in die ebene Fläche der Deckscheibe d übergeht. Die 
 EMI1.2 
 oder VakuumverfabrenDie   Keilform   des Schaufelquerschnittes gibt den Schaufeln die nötige Steifheit, und die Abrundungen am Schaufelfuss sorgen für eine gute Verbindung mit der Deckscheibe, was die Schaufel zur Aufnahme der im Betriebe auftretenden Luftreaktions- und Fliehkräfte befählgt. 



   Die Keilform   ermöglicht überdies   ein leichtes Abziehen des Schaufelrades von der Pressform. 



    PATENTANSPRÜCHE :    
 EMI1.3 
   Strômungsmaschinen,Scliaufelfassen ausgenommen Ist.    

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    I aufrad made of thermoplastic for flow machines, especially centrifugal fans There are already impellers for centrifugal fans u. Like. Known whose blades made of sheet metal are hollow and also impellers, including the full-walled blades made of plastic
 EMI1.1
 
Subject matter of the invention is an impeller.



     An Ansfuarungsbeispiel the invention is explained in more detail with reference to the drawing. 1 shows a perspective illustration of a fan blade with the part of the same immediately adjoining the blade and torn from the cover disk, FIG. 2 shows the same object seen from the underside, FIG. 3 shows a cross section through the blade and FIG the impeller seen from the bottom.



   The blade c is formed by a flat, thin-walled hollow body, which widens in a wedge-shaped manner towards the foot and merges with rounded areas a into the flat surface of the cover disk d. The
 EMI1.2
 The wedge shape of the blade cross-section gives the blades the necessary rigidity, and the rounded edges at the blade root ensure a good connection with the cover disk, which enables the blade to absorb the air reaction and centrifugal forces that occur during operation.



   The wedge shape also enables the paddle wheel to be easily removed from the mold.



    PATENT CLAIMS:
 EMI1.3
   Flow machines, excluding Scliaufassen.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Laufrad nach Anspruch 1, dadurch gekennzeichnet, dass die Schaufeln In Richtung zum Schaufelfuss hin sich verbreitern. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Impeller according to claim 1, characterized in that the blades widen in the direction of the blade root. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT548160A 1960-07-16 1960-07-16 Impeller made of thermoplastic material for flow machines, in particular centrifugal fans AT218664B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT548160A AT218664B (en) 1960-07-16 1960-07-16 Impeller made of thermoplastic material for flow machines, in particular centrifugal fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT548160A AT218664B (en) 1960-07-16 1960-07-16 Impeller made of thermoplastic material for flow machines, in particular centrifugal fans

Publications (1)

Publication Number Publication Date
AT218664B true AT218664B (en) 1961-12-11

Family

ID=3576273

Family Applications (1)

Application Number Title Priority Date Filing Date
AT548160A AT218664B (en) 1960-07-16 1960-07-16 Impeller made of thermoplastic material for flow machines, in particular centrifugal fans

Country Status (1)

Country Link
AT (1) AT218664B (en)

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