METHOD AND APPARATUS FOR DISINFECTING AND/OR DEODORIZING AN ARTICLE

• US 20110002810A1
• Filed: 11/19/2009
• Published: 01/06/2011
• Est. Priority Date: 07/02/2009
• Status: Active Grant

• Current Assignee: Haier US Appliance Solutions, Inc. DBA GE Appliances (Haier Group Company)
• Original Assignee: General Electric Company
• Inventors: Schork, Brian Michael, Watson, Eric K., Durand, Christopher, Kirchoff, Sarah Lynn, Kollengode, Subhash Viswanathan, Besore, John K.
• Granted Patent: US 8,465,704 B2
• Time in Patent Office: Days
• US Class Current: 422/5
• CPC Class Codes: A61L 2/202 Ozone
• CPC Class Codes: A61L 2202/11 Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
• CPC Class Codes: A61L 2202/13 Biocide decomposition means, e.g. catalysts, sorbents
• CPC Class Codes: A61L 2202/26 Textiles, e.g. towels, beds, cloths

Abstract

An apparatus for disinfecting and/or deodorizing an article comprises a cabinet defining a compartment configured to receive the article. A regenerative dryer is positioned with respect to the compartment and is configured to dehydrate air flowing into an ozone generator. The ozone generator is in communication with the dryer and is positioned with respect to the compartment. The ozone generator is configured to selectively generate ozone. The generated ozone is introduced into the compartment. An ozone conversion device is positioned with respect to the compartment and is configured to selectively convert ozone back to oxygen. A controller is configured to selectively activate the dryer, ozone generator and ozone conversion device.

Claims

1. An apparatus for disinfecting and/or deodorizing an article comprising:

a cabinet defining a compartment configured to receive the article;

a regenerative dryer positioned with respect to the compartment and configured to dehydrate air flowing into an ozone generator, the dryer including;

a housing having an air inlet and an air outlet located downstream from the air inlet, the housing defining a chamber, and

a dehydrating agent disposed within the chamber for absorbing moisture laden in the air, the dehydrating agent being operatively regenerated by heat for vaporizing and removing moisture in the dehydrating agent when saturated with the moisture;

the ozone generator in communication with the dryer and positioned with respect to the compartment, the ozone generator being configured to selectively generate ozone, the generated ozone being introduced into the compartment;

an ozone conversion device positioned with respect to the compartment and configured to selectively convert ozone back to oxygen; and

a controller configured to selectively activate the dryer, ozone generator and ozone conversion device.

2. The apparatus of claim 1, wherein the controller is configured to regenerate the dehydrating agent of the dryer after a predetermined number of cycles of ozone generation.

3. The apparatus of claim 1, further including a heater for regenerating the dehydrating agent.

4. The apparatus of claim 1, wherein dryer housing further includes an exhaust port for releasing the moisture captured by the dehydrating agent, and further comprising a valve mechanism operatively connected to the housing, the valve mechanism including a piston and a solenoid for displacing the piston between a first position and a second position,

wherein in the first position, the piston is spaced from the air outlet to allow dehydrated air to flow from the dryer to the ozone generator, the piston closing the exhaust port,

wherein in the second position, the piston is spaced from the exhaust port to allow for exhausting of vaporized moisture from the dehydrating agent, the piston closing the air outlet.

5. The apparatus of claim 4, wherein solenoid is a coil which is wound at least partially around the piston, wherein energization of the coil moves the piston from the first position to the second position, wherein the heat generated from energization of coil increases temperature of the dehydrating agent releasing the moisture captured therein through the exhaust port.

6. The apparatus of claim 4, further including a bias mechanism for urging the piston towards the first position, the bias mechanism being compressed by the piston in the second position.

7. The apparatus of claim 1, wherein the ozone conversion device includes a fan and at least one of a heater and a catalyst, wherein in a first airflow mode, the heater is de-energized and the fan circulates generated ozone through the compartment, the ozone airflow bypassing the catalyst, wherein in a second airflow mode, the heater is energized and the fan directs the heated ozone airflow to the catalyst for converting ozone back to oxygen.

8. The apparatus of claim 7, wherein the fan directs heat generated from the heater into the compartment to remove any residual ozone odor left in the article.

9. The apparatus of claim 1, further comprising a sensing device positioned with respect to the compartment, the sensing device configured to detect a level of the ozone within the compartment and generate a signal representative of the level of ozone, wherein the controller is in signal communication with the sensing device and is configured to operate the ozone generator in response to the signal transmitted from the sensing device.

10. The apparatus of claim 9, wherein the controller is configured to cycle the ozone generator between a first predetermined ozone concentration value and a second predetermined ozone concentration value, wherein the sensing device is configured to monitor the rate of decline of the ozone level within the compartment from the first ozone concentration value to the second ozone concentration value, wherein the controller is configured to compare the sensed rate of decline to a predetermined rate of decline, wherein the controller is configured to continue the cycling of the ozone generator at least until the sensed rate of decline is approximately equal to the predetermined rate of decline.

11. The apparatus of claim 10, wherein the controller is configured to compare the sensed rate of decline between successive cycles to determine a level of odor and/or bacteria remaining in the article.

12. An apparatus for disinfecting and/or deodorizing an article comprising:

a cabinet defining a compartment configured to receive the article;

a regenerative dryer positioned with respect to the compartment and configured to dehydrate air flowing into the compartment;

an ozone generator in communication with the dryer and positioned with respect to the compartment, the ozone generator being configured to selectively generate ozone, the generated ozone being introduced into the compartment;

an ozone conversion device positioned with respect to the compartment and configured to selectively convert ozone to oxygen, the ozone conversion device including a fan and a housing for housing at least one of a heater and a catalyst, wherein in a first airflow mode, the heater is de-energized and the fan circulates generated ozone through the compartment, the ozone airflow bypassing the catalyst, wherein in a second airflow mode, the heater is energized and the fan directs the heated ozone airflow to the catalyst for converting ozone back to oxygen; and

a controller configured to selectively activate the dryer, ozone generator and ozone conversion device.

13. The apparatus of claim 12, wherein the dryer includes a desiccant for reducing a relative humidity of air flowing through the dryer, and a heater for vaporizing and removing moisture in the desiccant when saturated with the moisture.

14. The apparatus of claim 12, wherein the ozone conversion device further includes a damper for redirecting the ozone through the heater and/or catalyst.

15. The apparatus of claim 12, wherein the fan is a reversible fan and the ozone conversion device further includes a first check valve and a second check valve, wherein in the first air mode, the first check valve is in an open condition and the second check valve is in a closed condition and the fan directs the ozone in a first direction, wherein in the second air mode, the first check valve is in a closed condition and the second check valve is in an open condition and the fan directs the ozone in a second, reverse direction.

16. The apparatus of claim 12, wherein the fan directs heat generated from the heater into the compartment to remove any residual ozone odor left in the article.

17. A method for disinfecting and/or deodorizing an article comprising:

providing an appliance including a cabinet defining a compartment;

placing the article within the compartment;

activating an ozone generator positioned with respect to the compartment to selectively generate ozone;

introducing the generated ozone into the compartment to treat the article;

ramping the level of ozone within the compartment to a first predetermined ozone concentration value;

detecting a rate of decline of the level of ozone within the compartment from the first ozone concentration value to a second predetermined ozone concentration value with a sensing device positioned with respect to the compartment;

comparing the sensed rate of decline to a predetermined rate of decline;

cycling the ozone generator between the first ozone concentration value and the second ozone concentration value if the sensed rate of decline is less than the predetermined rate of decline.

18. The method of claim 17, further comprising comparing the sensed rate of decline between successive cycles to determine a level of odor and/or bacteria remaining in the article.

19. The method of claim 17, further comprising activating a regenerative dryer positioned with respect to the compartment to dehydrate air flowing into the ozone generator.

20. The method of claim 19, further comprising regenerating the dryer after a predetermined number of cycles of ozone generation.

21. The method of claim 17, further comprising activating an ozone conversion device positioned with respect to the compartment to convert ozone to oxygen.

22. The method of claim 17, further comprising introducing heat into the compartment to remove any residual ozone odor left in the article.