Device for the heat treatment of a product
AssigneeE.T.I.A.—Evaluation Technologique, Ingenierie Et Applications
InventorsOlivier Lepez, Philippe Sajet
Life of this patent
Estimating the term…
Abstract
A device for the heat treatment of a product includes an enclosure, a conveyor for transporting the product between an inlet of the enclosure and an outlet of the enclosure, which comprise a screw mounted in such a way as to rotate in the enclosure according to a geometric rotational axis, and a heater for heating the screw by Joule effect. The screw has an electrical resistance that varies along the geometric rotational axis.
Claims17
A device for applying heat treatment to a substance, the device comprising:
- an enclosure;
- a conveyor for conveying the substance between an inlet of the enclosure and an outlet of the enclosure, the conveyor comprising a screw mounted to be driven in order to rotate inside the enclosure about an axis of rotation, the screw being subdivided into at least two portions in the axis of rotation, the at least two portions have equal lengths;
- and
- a heater that passes electric current through the screw for heating the screw by a Joule effect;
- wherein electrical resistance of one of the at least two portions of the screw is higher than electrical resistance of another one of the at least two portions of the screw such that temperature of the screw changes along the axis of rotation.
A device for applying heat treatment to a substance, the device comprising:
- an enclosure;
- a conveyor for conveying the substance between an inlet of the enclosure and an outlet of the enclosure, the conveyor comprising a screw mounted to be driven in order to rotate inside the enclosure about an axis of rotation, the screw being subdivided into at least two portions in the axis of rotation, the at least two portions have equal lengths;
- and
- a heater that passes electric current through the screw for heating the screw by a Joule effect;
- wherein electrical resistance of one of the at least two portions of the screw is higher than electrical resistance of another one of the at least two portions of the screw such that temperature of the screw changes along the axis of rotation and a center of the screw is devoid along a central axis.
A device for applying heat treatment to a substance, the device comprising:
- an enclosure;
- a conveyor extending from an inlet to an outlet of the enclosure for conveying the substance between the inlet of the enclosure and the outlet of the enclosure, the conveyor comprising a screw mounted to be driven in order to rotate inside the enclosure about an axis of rotation, the screw being subdivided into at least two portions in the axis of rotation, the at least two portions have equal lengths;
- and
- a heater that passes electric current through the screw for heating the screw by a Joule effect;
- wherein electrical resistance of one of the at least two portions of the screw is higher than electrical resistance of another one of the at least two portions of the screw such that temperature of the screw changes along the axis of rotation.
A device for applying heat treatment to a substance, the device comprising:
- an enclosure;
- a conveyor extending from an inlet to an outlet of the enclosure for conveying the substance between the inlet of the enclosure and the outlet of the enclosure, the conveyor comprising a screw mounted to be driven in order to rotate inside the enclosure about an axis of rotation, the screw being subdivided into at least two portions in the axis of rotation, the at least two portions have equal lengths;
- and
- a heater that passes electric current through the screw for heating the screw by a Joule effect;
- wherein electrical resistance of one of the at least two portions of the screw is higher than electrical resistance of another one of the at least two portions of the screw such that temperature of the screw changes along the axis of rotation and a center of the screw is devoid along a central axis.
Dependencies are inferred from the claim text.