CH101501A

CH101501A - Terminal for electrical heating conductors laid in protective covers.

Info

Publication number: CH101501A
Authority: CH
Inventors: Oerlikon Maschinenfabrik
Original assignee: Oerlikon Maschf
Priority date: 1922-10-17
Filing date: 1922-10-17
Publication date: 1923-09-17

Description

  

      Anschlussklemme    für in Schutzhüllen verlegte elektrische Heizleiter.    Bei elektrischen Heizeinrichtungen mit in  Schutzhüllen verlegten Heizleitern können an  den     Stromanschlussstellen    gefährliche Über  hitzungen eintreten. Um dies zu verhüten,  wird die den Gegenstand vorliegender Erfin  dung bildende     Anschlussklemme    für derar  tige Heizleiter in eine Kühlkammer, die an  der Schutzhülle angebracht sein kann, ange  ordnet.  



  In dem beiliegend gezeichneten Ausfüh  rungsbeispiel des Erfindungsgegenstandes ist  die Kühlkammer 1 am Ende eines Heiz  rohres 2     befestigt    und von diesem durch eine  Zwischenwand 3 abgeschlossen. 4 ist die       Anschlussklemme,    die von elektrisch isolieren  den Ringen 5 in der Kammer 1 getragen ist.  Im einen Ende der Klemme     steckt    der Heiz  draht 6 und im andern Ende die Stromzu  leitung 7.     Dadurch,    dass der Anschluss des  Heizdrahtes und derjenige der Stromzufüh  rung in entgegengesetzten Enden der Kühl  kammer erfolgen, wird die Wärmeleitung  vom Heizdraht 6 zur Leitung 7 vermindert.

    Zwischen den beiden Anschlüssen liegt noch  eine im Verhältnis zum Querschnitt des Heiz  drahtes 6 grosse Metallmasse 8 mit Kühlrip-         pen-    9, welche die Abkühlung der Klemme  befördern. Ventilationslöcher 10 sorgen für  den Luftwechsel in der Kühlkammer.



      Terminal for electrical heating conductors laid in protective covers. In the case of electrical heating devices with heating conductors laid in protective covers, dangerous overheating can occur at the power connection points. To prevent this, the subject of the present inven tion forming terminal for such term heating conductors in a cooling chamber, which can be attached to the protective cover, is arranged.



  In the accompanying Ausfüh approximately example of the subject invention, the cooling chamber 1 is attached to the end of a heating tube 2 and closed by a partition 3 from this. 4 is the connecting terminal which is carried by the rings 5 in the chamber 1 to insulate electrically. The heating wire 6 is inserted in one end of the clamp and the power supply line 7 in the other end. Because the connection of the heating wire and that of the power supply take place in opposite ends of the cooling chamber, the heat conduction from the heating wire 6 to the line 7 is reduced.

    Between the two connections there is also a metal mass 8, which is large in relation to the cross section of the heating wire 6, with cooling ribs 9, which promote the cooling of the terminal. Ventilation holes 10 ensure the exchange of air in the cooling chamber.

Claims

PATENT CLAIM: Connection terminal for electrical heating conductors laid in protective covers, characterized in that the terminal is arranged in a cooling chamber. SUBCLAIMS: i. Terminal according to claim, characterized in that the connections of the heating conductor and its power supply are located in opposite ends of the cooling chamber in order to reduce the transfer of heat from the heating conductor to the power supply. 2. Terminal according to claim, characterized in that the terminal between the heating conductor and the Stromzu guide has a large metal mass compared to the cross section of the heating conductor.

3. Connection terminal according to patent claim, characterized in that the terminal has a shape that promotes the dissipation of heat to its environment. 4. Connection terminal according to claim, characterized in that the terminal is provided with cooling fins'. 5. Connection terminal according to claim, characterized in that the cooling chamber is closed off by the protective sleeve. G. Terminal according to claim, characterized in that the cooling chamber is seen ver with ventilation openings.