Title:
METHOD AND DEVICE FOR DETERMINING THE SURFACE TEMPERATURE OF AN INDUCTIVELY HEATED ROLLER SHELL
Document Type and Number:
WIPO Patent Application WO/2014/180750
Kind Code:
A3
Abstract:
The invention relates to a method and a device for determining a surface temperature of an inductively heated roller shell. A current is induced in the roller shell by an induction coil. An actual value of the surface temperature is determined from at least one measured parameter of an electrical circuit of the induction coil by means of stored data. According to the invention, in order to be able to determine shell temperatures of the roller shell that are as exact as possible without large dispersion, the induction coil is connected to a capacitor in the electrical circuit in order to form an oscillating circuit, wherein the oscillating circuit is operated at an alternating-voltage frequency in the range of 3000 Hz to 30,000 Hz.
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Inventors:
ZENZEN DIRK (DE)
Application Number:
PCT/EP2014/059010
Publication Date:
December 31, 2014
Filing Date:
May 02, 2014
Export Citation:
Assignee:
OERLIKON TEXTILE GMBH & CO KG (DE)
International Classes:
H05B6/06
Domestic Patent References:
| WO1985001532A1 | 1985-04-11 |
Foreign References:
| DE19730531C1 | 1998-09-03 | |||
| EP1302818A1 | 2003-04-16 | |||
| DE102010051559A1 | 2012-03-22 | |||
| DE19843990C1 | 1999-08-19 | |||
| CH527934A | 1972-09-15 |
Attorney, Agent or Firm:
NEUMANN, Ditmar (Postfach 103363, Düsseldorf, DE)
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