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US 6,441,353 B1Granted
Integrated roller unit
AssigneeD.I.E.N.E.S. Apparatebau GmbH
InventorsWolfgang Gehrmann, Max Brossmer
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Abstract
The invention relates to roller unit consisting of an inductively heated roller, a drive motor, an inductor and a frequency converter. According to the invention not only the converter but also the temperature regulator for the induction heater and monitoring devices for the roller, heater and/or motor are integrated into the roller unit. The power electronics and the regulator are mounted on a common cooling unit which is cooled by a coolant which at the same time also cools the motor, the bearings and the inductor.
Claims31
A godet assembly comprising:
- support means for affixing said assembly to a machine frame of a yarn processing machine;
- a godet having an inductively heatable shell;
- a drive motor and a drive shaft connecting said godet to said motor;
- bearings supporting said drive shaft;
- an electronic frequency inverter for generating three-phase power for said motor;
- a stationary induction heater for heating said godet shell;
- an electronic heating power supply foresaid induction heater;
- cooling means for cooling said motor, said frequency inverter, said electronic heating power supply and at least one of said bearings;
- at least one first temperature sensor for sensing the temperature of said godet shell;
- at least one second temperature sensor for sensing the temperature of one of said bearings;
- a microcomputer operating as a feed-back controller for controlling the temperature of said godet by controlling the energy supply to said induction heater;
- first terminal means for supplying a DC voltage to said frequency inverter;
- second terminal means for supplying AC current to said induction heater;
- and
- third terminal means for connecting said microcomputer to a data bus leading to an external process computer, wherein said microcomputer further compares output signals of said first and second temperature sensors with predetermined limit signals and provides an alarm signal if one of said predetermined limits is exceeded.
12 more elements
Dependencies are inferred from the claim text.