CH98707A - Portable centrifugal fan driven by an electric motor. - Google Patents

Portable centrifugal fan driven by an electric motor.

Info

Publication number
CH98707A
CH98707A CH98707DA CH98707A CH 98707 A CH98707 A CH 98707A CH 98707D A CH98707D A CH 98707DA CH 98707 A CH98707 A CH 98707A
Authority
CH
Switzerland
Prior art keywords
electric motor
centrifugal fan
fan
fan driven
portable centrifugal
Prior art date
Application number
Other languages
German (de)
Inventor
Oerlikon Maschinenfabrik
Original Assignee
Oerlikon Maschf
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 Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH98707A publication Critical patent/CH98707A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/582Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/70Safety, emergency conditions or requirements
    • F04C2270/72Safety, emergency conditions or requirements preventing reverse rotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

  

      Elektromotorisch    angetriebenes, transportables Kreiselgebläse.    Bei der Verwendung von     elektromotorisch     angetriebenen, transportablen     Kreiselgeblä-          sen    zur     Speisung    von     elektrischen        Lufterhit-          zungsöfen    ist es erwünscht, neben einer Vor  richtung, .die bei verkehrter Drehrichtung des  Gebläses den Antriebsmotor selbsttätig still  setzt, auch noch eine Schutzvorrichtung vor  zusehen, die bei einer bestimmten Drehzahl  des Gebläses den elektrischen Heizstromkreis  von sich aus einschaltet, dagegen letzteren  abschaltet,

   wenn aus irgend einem Grunde  gar keine oder nur ungenügend Luft durch  den Ofen ,getrieben     wird.    Zu diesem Zweck  besitzt das den Gegenstand vorliegender Er  findung bildende Kreiselgebläse einen Zen  trifugalschalter, der in Abhängigkeit der     Ge-          bläsedrehzahl    den Ofen     selbsttätig    zu- und  abschaltet, wie die beiliegende schematische  Zeichnung anhand des im Hauptpatent be  schriebenen Ausführungsbeispiels zeigt.  



  Dazu trägt die Motor- und     Gebläsewelle     einen     Fliehkraftregler    R', der bei einer be  stimmten Drehzahl     des        Gebläses    G durch ein  Gestänge 0'.den     Schalter        S'    betätigt, wodurch    .der Ofen H .an das Netz angeschlossen wird,  falls der Motor M in der .durch den Dreh  richtungsregler R     bestimmten    Richtung läuft,  bei der das Gebläse G Luft in den Ofen H  schöpfen soll.

   Nimmt die     Gebläseleistung    in  folge Sinkens der     Gebläsedrehzahl    ab, so  stellt der Regler R' .das Gestänge 0' zurück,  so     .dass    die gespannte Feder F' den     Schalter          S'    in die Ausschaltstellung zurückzieht. Der       Motorstromschalter        S    und der Heizstrom  sehalter S' können auch zu einer Schaltvor  richtung     vereinigt    sein.



      Portable centrifugal fan driven by an electric motor. When using an electric motor-driven, portable centrifugal fan to feed electric air heating ovens, it is desirable to have a protective device in addition to a device that automatically stops the drive motor when the fan rotates in the wrong direction certain speed of the fan switches on the electrical heating circuit by itself, but switches off the latter,

   if for some reason no or insufficient air is forced through the furnace. For this purpose, the subject of the present invention He has forming centrifugal fan a centrifugal switch that automatically switches the furnace on and off depending on the fan speed, as the accompanying schematic drawing based on the embodiment described in the main patent shows.



  For this purpose, the motor and fan shaft have a centrifugal governor R 'which, at a certain speed of the fan G, actuates the switch S' through a linkage 0 ', whereby the furnace H is connected to the mains if the motor M the direction determined by the direction of rotation controller R runs, in which the fan G is to scoop air into the oven H.

   If the blower output decreases as a result of a drop in the blower speed, the controller R 'resets the linkage 0' so that the tensioned spring F 'pulls the switch S' back into the off position. The motor current switch S and the heating current sehalter S 'can also be combined into a switching device.

 

Claims (1)

PATENTANSPRUCH Elektromotorisch angetriebenes, transpor tables Kreiselgebläse, nach dem Patentan spruch des Hauptpatentes, in Verbindung mit einem elektrischen Lufterhitzungsofen, dadurch gekennzeichnet, dass das Gebläse einen Zentrifugals,chalter besitzt, der in Ab-. hängigkeit der Gebläsedrehzahl den Ofen selbsttätig zu- und .abschaltet. PATENT CLAIM Electromotor-driven, transportable centrifugal fan, according to the claim of the main patent, in connection with an electric air heating furnace, characterized in that the fan has a centrifugal switch that is switched off. depending on the fan speed switches the furnace on and off automatically.
CH98707D 1921-12-06 1921-12-06 Portable centrifugal fan driven by an electric motor. CH98707A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH98707T 1921-12-06
CH95885T 1921-12-06

Publications (1)

Publication Number Publication Date
CH98707A true CH98707A (en) 1923-04-16

Family

ID=25705026

Family Applications (1)

Application Number Title Priority Date Filing Date
CH98707D CH98707A (en) 1921-12-06 1921-12-06 Portable centrifugal fan driven by an electric motor.

Country Status (1)

Country Link
CH (1) CH98707A (en)

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