ROLLER FOR HEATING A PAPER WEB OR FABRIC

• US 20140190953A1
• Filed: 03/13/2014
• Published: 07/10/2014
• Est. Priority Date: 09/13/2011
• Status: Abandoned Application

• Current Assignee: Quantum Technology Group (singapore) Pte. Ltd.
• Original Assignee: Quantum Technologie (Deutschland) GmbH
• Inventors: CHAN, Ki
• Application Number:
  US14/209,516
• Publication Number:
  US 20140190953A1
• Time in Patent Office: Days
• US Class Current: 219/469
• CPC Class Codes: D06B 23/028 Rollers for thermal treatment
• CPC Class Codes: D21F 5/021 Construction of the cylinders
• CPC Class Codes: D21F 5/024 using electrical means
• CPC Class Codes: D21G 1/028 using electrical means
• CPC Class Codes: F16C 13/00 Rolls, drums, discs, or the like guide rollers in feeding webs B65H27/00; calender rolls, bearings therefor D21G1/02; rotary drums or rollers for heat-exchange or heat-transfer apparatus F28F5/02; Bearings or mountings therefor

Abstract

A heated roller for heating a paper web or fabric web with a cylindrical roller shell, a front side and a rear side permits a homogenous temperature on its surface if the cylindrical roller shell surrounds an inner roller shell thereby forming a ring like or at least one ring segment like hollow space between the cylindrical roller shell and the inner roller shell and if at least one heat source is inserted in the hollow space.

Claims

1. A heated roller for heating a web of paper or fabric with a cylindrical roller shell, a front side and a rear side, wherein

the cylindrical roller shell surrounds an inner roller shell thereby forming a hollow space having the form of a ring or at least of a ring segment between the cylindrical roller shell and the inner roller shell,

the inner roller shell has at least one casing, which extends from the front and/or rear side into the hollow space, supporting at least one heat source and being connected to at least one of the inner roller shell and/or the cylindrical roller shell by at least one inorganic salt,

the cylindrical roller shell is supported by two shafts, being inserted into a through hole, one from each facing side of the roller shell.

2. The roller of claim 1 wherein

the at least one heat source is at least one slab like electrical heater element, which is thermally connected to the at least one inner roller shell.

3. The roller of claim 1 wherein

the heat source comprises multiple slab like encapsulated electrical heater elements, being arranged in parallel to each other on the outer surface of the inner roller shell or in at least one bore of the cylindrical roller shell and in parallel to a rotational axis of the roller.

4. The roller of claims 1 wherein

the hollow space is connected via a tube like connector with the front and/or rear side of the roll.

5. The roller of claim 1 wherein

the heat source is inserted from the front and/or rear side of the drum into the hollow space or bore, respectively.

6. The roller of claim 1 wherein

the inner roller shell is reinforced by least one ring with an outer narrow side and an inner narrow side, wherein the outer narrow side statically contacts the inner side of the inner roller shell.

7. The roller of claim 1 wherein

the cylindrical roller shell and the inner roller shell are attached to disks at the front and the rear side of the roller.

8. The roller of claim 1 wherein

the roller has at least one roller shaft supporting at least one slip ring, the latter being electrically connected with the at least one heat source for supplying electric energy to the at least one heat source.

9. The roller of claim 1 wherein

the hollow space is evacuated and in that the inner surface is coated with inorganic salts.

10. A heated roller for heating a web of paper or fabric comprising at least a cylindrical roller shell having a cylinder axis, a front side and a rear side, wherein

the cylindrical roller shell comprises at least one bore extending at least approximately parallel to the cylinder axis,

the heated roller further comprises at least one heater cartridge is inserted in at least one of the bores and being thermally connected to said cylindrical roller shell by at least one inorganic salt,

the cylindrical roller shell is supported by two shafts, being inserted into a through hole, one from each facing side of the roller shell.

11. The roller of claim 10 wherein

the at least one heat source is at least one slab like electrical heater element, which is thermally connected to the at least one inner roller shell.

12. The roller of claim 10, wherein

the heat source comprises multiple slab like encapsulated electrical heater elements, being arranged in parallel to each other on the outer surface of the inner roller shell or in the at least one bore, respectively and in parallel to a rotational axis of the roller.

13. The roller of claim 10 wherein

wherein the hollow space is connected via a tube like connector with the front and/or rear side of the roll.

14. The roller of one claim 10 wherein

the heat source is inserted from the front and/or rear side of the drum into the hollow space or bore, respectively.

15. The roller of claim 10 wherein

the inner roller shell is reinforced by least one ring with an outer narrow side and an inner narrow side, wherein the outer narrow side statically contacts the inner side of the inner roller shell.