Electric Heating Element Having An Electrically Operated Heating Element And An Anode For Cathodic Corrosion Protection

Abstract

The disclosure relates to an electric heating element for use in a water storage unit, comprising a metal attaching element for attaching the electric heating element on the water storage unit, an electrically operated heating element, an anode for cathodic corrosion protection, and an adjustable resistor element, wherein the heating element is electrically contacted with the attaching element and/or the water storage unit via the adjustable resistor element, and the heating element and the anode are arranged in physical proximity to one another on the attaching element.

1 . An electric heating element for use in a water storage unit, comprising a metal attaching element for attaching the electric heating element to the water storage unit, an electrically operated heating element, an anode for cathodic corrosion protection, and an adjustable resistor element,
 wherein   the heating element is electrically contacted with the attaching element and/or the water storage unit via the adjustable resistor element and the heating element and the anode are arranged in physical proximity to one another on the attaching element.   
     
     
         2 . The electric heating element according to  claim 1 ,
 wherein   the attaching element has a thread and may be screwed directly into the water storage unit.   
     
     
         3 . The electric heating element according to  claim 1 ,
 wherein   the anode comprises an anode body and a contact element connected in an electrically conducting manner to the anode body, wherein the contact element is passed through the attaching element in an electrically insulated manner through an insulating pass-through.   
     
     
         4 . The electric heating element according to  claim 3 ,
 wherein   the contact element for cathodic corrosion protection is connected in an electrically conducting manner to the attaching element and/or the water storage unit.   
     
     
         5 . The electric heating element according to  claim 3 ,
 wherein   the contact element for cathodic corrosion protection is connected in an electrically conducting manner to an external voltage source.   
     
     
         6 . The electric heating element according to  claim 3 ,
 wherein   at least parts of the insulating pass-through are produced from cross-linked polyethylene.   
     
     
         7 . The electric heating element according to  claim 1 ,
 wherein   the heating element comprises a temperature sensor, at least one heating tube, an intermediate piece, and a connecting element connected in an electrically conducting manner to the intermediate piece, wherein the connecting element passes through the attaching element through a sealing/insulating body in an electrically insulated manner.   
     
     
         8 . The electric heating element according to  claim 7 ,
 wherein   the connecting element passes through the adjustable resistor element and is electrically contacted with the attaching element and/or water storage unit via the adjustable resistor element.   
     
     
         9 . The electric heating element according to  claim 1 ,
 wherein   the adjustable resistor element is annular, has a contact surface for electrical contacting on both an upper side and lower side, and an ohmic resistor is interposed between the contact surfaces.   
     
     
         10 . The electric heating element according to  claim 1 ,
 wherein   the adjustable resistor element is provided as a miniaturized plate with an SMD.