DE1816446A1 - Radial fan casings made from extrusion - blown plastics pref with vacuum assistance - Google Patents

Radial fan casings made from extrusion - blown plastics pref with vacuum assistance

Info

Publication number
DE1816446A1
DE1816446A1 DE19681816446 DE1816446A DE1816446A1 DE 1816446 A1 DE1816446 A1 DE 1816446A1 DE 19681816446 DE19681816446 DE 19681816446 DE 1816446 A DE1816446 A DE 1816446A DE 1816446 A1 DE1816446 A1 DE 1816446A1
Authority
DE
Germany
Prior art keywords
pref
extrusion
radial fan
vacuum assistance
casings made
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.)
Pending
Application number
DE19681816446
Other languages
German (de)
Inventor
Dipl-Ing Karl Jung
Gunther Moeckel
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 DE19681816446 priority Critical patent/DE1816446A1/en
Priority to BE743347D priority patent/BE743347A/xx
Publication of DE1816446A1 publication Critical patent/DE1816446A1/en
Pending 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

Landscapes

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

Abstract

Cylindrical casings developed in a spiral to provide a tangential exhaust outlet are more easily formed by (vacuum assisted) blow moulding than by fabrication from sheet materials. Pref. at least one casing and wall is moulded integrally with the casing - normally the second end is also formed but cut off to allow the fan rotor and/or a (detachable) end cover to be fitted.

Description

Verfahren zum Herstellen von Spiralgehäusen für RadialgebläseProcess for the production of volute casings for radial fans

Die Erfindung betrifft ein Verfahren zum Herstellen von rohrförmigen Spiralgehäusen für Radialgebläse, insbesondere mit Trommelläufern. -The invention relates to a method for producing tubular Spiral housings for radial fans, in particular with drum rotors. -

Bei Radialgebläsen sind bei gleichen Durchmessern je nach Radbreite verschiedene Gehäusebreiten erforderlich. Ferner müssen je nach Bauart - z.B. ein- oder doppelseitig ansaugende, mehrflutige Anordnung - verschiedenartige Deckscheiben und Deckscheibenanordnungen vorgesehen werden.With radial fans, different housing widths are required for the same diameter depending on the wheel width. Furthermore must depending on the design - e.g. single or double suction, multi-flow Arrangement - various cover disks and cover disk arrangements are provided.

Bei den bekannten Blechgehäusen müssen für jede dieser Varianten spezielle Schnitte oder Formen angefertigt und die Einzelteile verhältnismäßig aufwendig zusammengebaut werden.In the known sheet metal housings, for each of these variants special cuts or shapes are made and the individual parts are assembled in a relatively complex manner.

Es wurde bereits ein Verfahren vorgeschlagen, das eine einfache und billige Herstellung der Gehäuse erlaubt, und bei dem gleichzeitig nur eine einzige Form "für verschiedene Lüfterradbreiten bei gleichem Durchmesser erforderlich ist. Bei diesem Verfahren wird ein endloses Rohr mit. dem Querschnitt des Gehäuses im Schleuderguß- oder Strangpreßverfahren hergestellt, die jeweils benötigte Gehäuselänge abgetrennt und die jeweils erforderlichen Deckscheiben dann auf- oder angesetzt.A method has already been proposed that is simple and cheap production of the housing is allowed, and at the same time only a single shape "for different fan widths with the same diameter is required. This process uses an endless tube. the cross section of the housing in Centrifugal casting or extrusion processes produced, the respective required housing length cut off and the respectively required Cover disks then put on or attached.

Die Aufgabe der vorliegenden Erfindung besteht ebenfalls darin, ein einfaches und billiges Herstellungsverfahren für derartige Gehäuse anzugeben. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das rohrförmige Gehäuse und mindestens eine seiner seitlichen Deokscheibe aus Kunststoff im Blasverfahren hergestellt wird. Als Blasverfahren kann dabei z.B. das bei der Herstellung von Flaschen bekannte Vakuumblasverfahren benutzt werden, ■The object of the present invention is also to specify a simple and inexpensive manufacturing process for such housings. This object is achieved according to the invention solved that the tubular housing and at least one of its side Deok disc made of plastic in a blow molding process will. For example, the vacuum blowing process known from the manufacture of bottles can be used as a blowing process be, ■

Ö098 3Q/4S36 Ö098 3Q / 4S36

PLA 68/1718PLA 68/1718

Anhand einer Zeichnung sei die Erfindung näher erläutert:The invention is explained in more detail with the aid of a drawing:

Bas is Vakuusblasverfahren hergestellte Spiralgehäuse aus Kunststoff eines Radialventilators besteht aus eines rohrförmigen Teil 1 und eines Ausblas 2. Beim Blasvorgang wird das rohrföraige Gehäuse 1 gleichzeitig mit einer Beckscheibe 5 von gewünschter Form hergestellt; z.B. kann diese Beckscheibe 5 bereits markierte Stellen zum Durchbruch einer Motorwelle oder einer Luftansaugöffnung aufweisen.A centrifugal fan consists of a tubular spiral casing made of plastic based on the vacuum blow molding process Part 1 and a blow-out 2. During the blowing process, the tubular housing 1 is produced at the same time as a Beck washer 5 of the desired shape; E.g. this Beck disc 5 can already have marked points for the breakthrough of a motor shaft or an air intake opening.

Nach dem Blasvorgang wird der obere Seitenteil 6, der den Blasstutzen 4 enthält, vom rohrförmigen Gehäuse 1 abgetrennt -strichpunktierte Linie 3 - und die den Ausblas 2 verschließende Kunststoffhaut entfernt.After the blowing process, the upper side part 6, which contains the blowing nozzle 4, is separated from the tubular housing 1 - dash-dotted line 3 - and the one that closes the blow-out 2 Plastic skin removed.

In das so entstandene Gehäuse wird dann bei Bedarf das nicht dargestellte Laufrad eingesetzt und durch eine weitere» ebenfalls nicht dargestellte Beckscheibe verschlossen. Biese Beckscheibe kann dann gleichzeitig auch den Antriebsmotor des Laufrades tragen. Bie Befestigung dieser weiteren Deckscheibe sit dem rohrförmigen Gehäuse 1 kann z.B. durch Kleben oder durch Rastnuten oder ähnliche Befestigungsmittel vorgenommen werden.If necessary, this will not be done in the housing created in this way The impeller shown is inserted and closed by another »Beck disc, also not shown. Biese Beck disc can then also carry the impeller's drive motor at the same time. When this additional cover plate is fastened, the tubular housing 1 can be made, for example, by gluing or by locking grooves or similar fastening means.

2 Patentansprüche 1 Pigur2 claims 1 Pigur

- 3 -0 0 9830/1536- 3 -0 0 9830/1536

Claims (2)

PLA 68/1718 PatentansprüchePLA 68/1718 claims 1. Verfahren zum Herstellen von rohrförmigen Spiralgehäusen für Radialgebläse, insbesondere mit Trommelläufern, dadurch gekennzeichnet, daß das rohrförmige Gehäuse (1) und mindestens eine seiner seitlichen Deckscheiben (5) aus Kunststoff im Blasverfahren hergestellt wird.1. Method of manufacturing tubular volute casings for Radial fans, in particular with drum rotors, characterized in that that the tubular housing (1) and at least one of its side cover plates (5) made of plastic in the Blow molding is produced. 2. Verfahren nach Anspruch 1, gekennzeichnet durch die Verwendung des Vakuumblasverfahrens.2. The method according to claim 1, characterized by the use the vacuum blowing process. 009830/1536009830/1536 LeerseiteBlank page JAtflOi«)JAtflOi «)
DE19681816446 1968-12-21 1968-12-21 Radial fan casings made from extrusion - blown plastics pref with vacuum assistance Pending DE1816446A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19681816446 DE1816446A1 (en) 1968-12-21 1968-12-21 Radial fan casings made from extrusion - blown plastics pref with vacuum assistance
BE743347D BE743347A (en) 1968-12-21 1969-12-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681816446 DE1816446A1 (en) 1968-12-21 1968-12-21 Radial fan casings made from extrusion - blown plastics pref with vacuum assistance

Publications (1)

Publication Number Publication Date
DE1816446A1 true DE1816446A1 (en) 1970-07-23

Family

ID=5717125

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681816446 Pending DE1816446A1 (en) 1968-12-21 1968-12-21 Radial fan casings made from extrusion - blown plastics pref with vacuum assistance

Country Status (2)

Country Link
BE (1) BE743347A (en)
DE (1) DE1816446A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214308U1 (en) * 1992-10-23 1993-01-07 Siegenia-Frank Kg, 5900 Siegen, De
EP1388669A1 (en) * 2002-08-01 2004-02-11 GEBHARDT VENTILATOREN GMBH & CO. Fan casing and method of production thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214308U1 (en) * 1992-10-23 1993-01-07 Siegenia-Frank Kg, 5900 Siegen, De
EP1388669A1 (en) * 2002-08-01 2004-02-11 GEBHARDT VENTILATOREN GMBH & CO. Fan casing and method of production thereof

Also Published As

Publication number Publication date
BE743347A (en) 1970-05-28

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