Zone-based heating element
AssigneeGeorg Fischer Rohrleitungssysteme AG
InventorsJuergen Roesch, Benedikt Engesser
Life of this patent
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Abstract
Heating element for generating IR heat beams for contactlessly heating plastic profile ends, preferably for end-face welding of pipes or fittings clamped in a device, comprising a heating plate made at least partially of a conductive material and having two heatable faces, a heating wire for generating the heat beams, wherein the heating wire is arranged on the faces of the heating plate, wherein the heating plate has a plurality of heating zones spaced apart radially from one another.
Claims20
A heating element (1) for generating IR heat beams for contactlessly heating plastic profile ends, preferably for end-face welding of pipes or fittings clamped in a device, comprising a heating plate (2) made at least partially of a conductive material and having two heatable faces (5), a heating wire (3) for generating the heat beams, wherein the heating wire (3) is arranged on the faces (5) of the heating plate (2), wherein the heating plate (2) has a plurality of heating zones (12) spaced apart radially from one another.
A heating element for generating infrared (IR) heat beams for welding end faces of pipes clamped in a device, said heating element comprising:
- a first inner heating ring;
- a series of heating rings progressively radially surrounding the first heating ring;
- each of the heating rings being U-shaped having opposing upright conductive outer faces separated by a transverse middle section, the transverse middle section having a shoulder;
- each of the rings being separated by an insulating spacer member having a recess receiving the shoulder of the transverse middle section of a heating ring;
- and
- a heating wire on the faces of the rings for generating the infrared (IR) heat beams, the heating wire being configured to generate a plurality of individually controllable heating zones for each of the rings.
Dependencies are inferred from the claim text.