Appliance for drying articles

Patent metadata

Field	Value
Publication number	US-11459696-B2
Application number	US-202017077058-A
Country	US
Kind code	B2
Filing date	Oct 22, 2020
Priority date	Aug 23, 2013
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A radio frequency (RF) dryer includes a cuboid structure defining an interior, an RF applicator having an anode and a cathode, the anode having multiple digits extending from an anode trunk and the cathode having multiple digits extending from a cathode trunk and, the cathode encompassing the multiple digits of the anode, and a drying surface on which textiles are supported for drying, located relative to the RF applicator such that the drying surface lies within an e-field generated by the RF applicator.

First claim

What is claimed is:

1. A radio frequency (RF) dryer comprising:
a cuboid structure defining an interior;
an RF applicator having an anode and a cathode, the anode having multiple digits extending from an anode trunk and the cathode having multiple digits extending from a cathode trunk comprising a gap defining a space and, the cathode encompassing the multiple digits of the anode, wherein at least a subset of the digits of the anode and at least a subset of the digits of the cathode being interdigitated; and
a drying surface on which textiles are supported for drying, located relative to the RF applicator such that the drying surface lies within an e-field generated by the RF applicator;
wherein the cuboid structure defines a Faraday cage.

2. The RF dryer of claim 1 wherein the anode and cathode are coplanar.

3. The RF dryer of claim 1 , further comprising the RF generator.

4. The RF dryer of claim 1 , wherein the anode trunk passes through the space.

5. The RF dryer of claim 1 wherein the Faraday cage encloses the anode, the cathode, and the drying surface.

6. The RF dryer of claim 1 wherein the cuboid structure further comprises a movable lid.

7. The RF dryer of claim 6 wherein the movable lid is configured to pivotable relative to the cuboid structure defining an opened position providing access to the interior of the cuboid structure and a closed position preventing access to the interior of the cuboid structure.

8. The RF dryer of claim 1 wherein, at any point on the cathode, a distance to the anode from that point is closer than a distance to the Faraday cage from that point.

9. The RF dryer of claim 1 wherein a cuboid structure is a rectangular cuboid structure.

10. The RF dryer of claim 1 wherein the drying surface is a stationary drying surface.

11. The RF dryer of claim 10 wherein the stationary drying surface does not move relative to the cuboid structure.

12. The RF dryer of claim 1 wherein the drying surface is a planar surface.

13. The RF dryer of claim 1 wherein at least a subset of the digits of the cathode encompasses at least a subset of the digits of the anode.

14. The RF dryer of claim 1 wherein the digits of the anode branch from the anode trunk.

15. The RF dryer of claim 1 wherein the digits of the cathode branch from the cathode trunk.

16. The RF dryer of claim 1 further comprising an impedance matching circuit electrically coupling the RF generator and at least the anode.

17. The RF dryer of claim 1 wherein the anode defines at least one of a linear tree structure and a circular tree structure.

18. The RF dryer of claim 1 wherein the anode defines a first terminal, and wherein the cathode defines a second terminal and a third terminal.

19. The RF dryer of claim 18 , further comprising a gap in the cathode trunk defining a space wherein the first terminal of the anode passes through the space, and wherein the second terminal and the third terminal of the cathode are disposed at the gap.

20. A radio frequency (RF) dryer comprising:
a cuboid structure defining an interior;
an RF applicator having an anode and a cathode, the anode defining a first terminal and having multiple digits extending from an anode trunk and the cathode defining a second terminal and a third terminal and having multiple digits extending from a cathode trunk and the cathode trunk comprising a gap defining a space wherein the first terminal of the anode passes through the space, and wherein the second terminal and the third terminal of the cathode are disposed at the gap, the cathode encompassing the multiple digits of the anode, wherein at least a subset of the digits of the anode and at least a subset of the digits of the cathode being interdigitated; and
a drying surface on which textiles are supported for drying, located relative to the RF applicator such that the drying surface lies within an e-field generated by the RF applicator;
wherein the cuboid structure defines a Faraday cage.

Assignees

• Whirlpool Co

Inventors

• Herman Mark L
• Peterman Garry L
• Rajendran Arun

Classifications

• H05B6/62

  Apparatus for specific applications · CPC title

• H05B6/54

  Electrodes · CPC title

• D06F58/266

  Microwave heating equipment · CPC title

• F26B3/34

  by using electrical effects · CPC title

• D06F58/10 Primary

  Drying cabinets or drying chambers having heating or ventilating means · CPC title