Method and apparatus for drying articles

Patent metadata

Field	Value
Publication number	US-9410282-B2
Application number	US-201314044092-A
Country	US
Kind code	B2
Filing date	Oct 2, 2013
Priority date	Oct 2, 2013
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A method and apparatus for drying textile material with a radio frequency (RF) applicator and a controller, the method includes energizing the RF applicator to generate a field of electromagnetic radiation (e-field), measuring a parameter related to the energization of the RF applicator, determining a drying cycle of operation in the controller based on the measured parameter, and controlling the energization of the RF applicator according to the determination of the drying cycle of operation, wherein the textile material is dried.

First claim

What is claimed is:

1. A textile material treating applicator for drying textile material according to a drying cycle of operation, comprising:
a textile material support element;
an anode element and a cathode element supported by the textile material support element;
a capacitive couple between the anode element and the cathode element;
a radio frequency (RF) generator coupled to the anode element and the cathode element and selectively energizable to generate electromagnetic radiation in the radio frequency spectrum wherein the energization of the RF generator sends electromagnetic radiation through the applicator via the capacitive couple to form a field of electromagnetic radiation (e-field) in the radio frequency spectrum to dielectrically heat liquid within the textile material resting on the support element, and configured to output at least one signal indicative of the RF generator energization; and
a controller coupled with the RF generator to receive the at least one RF generator energization signal and further configured to control the drying cycle of operation in response to the at least one RF generator energization signal.

2. The textile material treating applicator of claim 1 wherein the textile material support element comprises a bed, with the textile material supported on an upper surface of the bed.

3. The textile material treating applicator of claim 1 wherein the textile material support element comprises a rotatable drum with inner and outer surfaces and the textile material is supported on the inner surface.

4. The textile material treating applicator of claim 1 wherein the at least one generator energization signal comprises at least one of power level, reflected power, anode voltage, cathode voltage, or impedance.

5. The textile material treating applicator of claim 4 , further comprising an impedance matching circuit wherein the at least one generator energization signal further includes a signal transmitted from the impedance matching circuit to the controller.

6. The textile material treating applicator of claim 1 wherein the controller is further configured to receive at least one input associated with at least one textile material characteristic, wherein the at least one textile material characteristic comprises at least one of textile material size, quantity, material, or heat level.

7. The textile material treating applicator of claim 6 , further comprising a user interface wherein the at least one textile material characteristic is user-selectable.

8. The textile material treating applicator of claim 6 wherein the controller determines the at least one textile material characteristic from the at least one RF generator energization signal.

9. The textile material treating applicator of claim 8 , further comprising an impedance matching circuit wherein the at least one generator energization signal further includes a signal transmitted from the impedance matching circuit to the controller.

10. The textile material treating applicator of claim 1 wherein the controller further comprises a memory in which is stored at least one predetermined cycle of operation.

11. The textile material treating applicator of claim 10 wherein the controller is configured to compare the at least one RF generator energization signal to the at least one predetermined cycle of operation.

12. The textile material treating applicator of claim 10 wherein the controller is configured to control the drying cycle of operation in accordance to the at least one predetermined cycle of operation.

13. The textile material treating applicator of claim 12 wherein the controller is configured to control the drying cycle of operation by control of the selective energization of the RF generator.

14. The textile material treating applicator of claim 13 wherein the at least one predetermined cycle of operation further defines at least one of a power level, a reflected power, an anode voltage, a cathode voltage, or an impedance profile for the RF applicator.

15. The textile material treating applicator of claim 14 wherein the at least one predetermined cycle of operation defines at least one of a maximum power level, a maximum reflected power, a maximum anode voltage, a maximum cathode voltage, or a maximum impedance profile for the RF generator.

16. The textile material treating applicator of claim 15 wherein the at least one maximum power level, maximum reflected power, maximum anode voltage, maximum cathode voltage, or maximum impedance profile is defined such that electrical arcing is prevented.

17. The textile material treating applicator of claim 1 wherein the controller is configured to control the drying cycle of operation by controlling the selective energization of the RF generator.

18. The textile material treating applicator of claim 1 further comprising a plurality of capacitive couplings between a plurality of anode elements and cathode elements, and wherein the RF generator is selectively energizable to generate electromagnetic radiation via individual capacitive couplings.

Assignees

• Whirlpool Co

Inventors

• Herman Mark L
• Putnam Daniel M

Classifications

• D06F2101/02

  Characteristics of laundry or load · CPC title

• D06F2105/28

  Electric heating · CPC title

• D06F60/00

  Drying not provided for in groups D06F53/00 - D06F59/00 · CPC title

• F26B3/347

  Electromagnetic heating, e.g. induction heating or heating using microwave energy · CPC title

• D06F58/266

  Microwave heating equipment · CPC title