Storage device including target UV illumination ranges

• US 10,272,168 B2
• Filed: 05/17/2018
• Issued: 04/30/2019
• Est. Priority Date: 08/28/2012
• Status: Active Grant

• Current Assignee: Sensor Electronic Technology Incorporated (Seoul Semiconductor Co., Ltd.)
• Original Assignee: Sensor Electronic Technology Incorporated (Seoul Semiconductor Co., Ltd.)
• Inventors: Shur, Michael, Shatalov, Maxim S., Bettles, Timothy James, Bilenko, Yuri, Smetona, Saulius, Dobrinsky, Alexander, Gaska, Remigijus
• Primary Examiner(s): Martin, Elizabeth J
• Application Number:
  US15/982,611
• Publication Number:
  US 20180264151A1
• Time in Patent Office: 348 Days
• CPC Class Codes: A23L 3/28 with ultraviolet light
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/21 Pharmaceuticals, e.g. medicaments, artificial body parts
• CPC Class Codes: F25D 17/042 Air treating means within refrigerated spaces air conditioning in general F24F
• CPC Class Codes: F25D 2317/0417 using an UV-lamp

Abstract

Ultraviolet radiation is directed within a storage area at target wavelengths, target intensities, a target temporal distribution, and/or a target spatial distribution. A set of ultraviolet radiation sources generate ultraviolet radiation directed at a set of items located within the storage area. A first ultraviolet radiation source operates at a first peak wavelength and a second ultraviolet radiation source operates at a second peak wavelength that is different from the first peak wavelength.

Claims

1. A system comprising:

an enclosure including a storage area configured to store a set of items, wherein the storage area is formed of a plurality of layers, wherein the plurality of layers includes an outer ultraviolet reflective layer and an inner ultraviolet transparent layer;

a plurality of ultraviolet radiation sources configured to generate ultraviolet radiation directed at the set of items within the storage area, wherein at least one of the plurality of ultraviolet radiation sources are mounted to the inner ultraviolet transparent layer, wherein a first ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a first peak wavelength and a second ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a second peak wavelength that is different from the first peak wavelength; and

a monitoring and control system configured to;

monitor a set of current conditions of at least one of;

the storage area or the set of items located in the storage area, wherein the set of current conditions includes a change in a visual appearance of at least one of the set of items located in the storage area, wherein the change includes at least one of;

a change in color or a change in fluorescence due to microorganisms; and

control the ultraviolet radiation generated by the set of ultraviolet radiation sources using the set of current conditions and a target effect for the set of items by adjusting at least one of;

an intensity, a wavelength, a temporal distribution, or a spatial distribution of the ultraviolet radiation.

2. The system of claim 1, further comprising a set of visible radiation sources configured to generate visible radiation within the storage area.

3. The system of claim 1, wherein at least one of the ultraviolet radiation sources is configured to operate at a wavelength to elicit a fluorescent response from a surface of the set of items.

4. The system of claim 1, further comprising a photo-catalyst located within the storage area.

5. The system of claim 4, wherein at least one of the ultraviolet radiation sources is configured to facilitate a target photocatalytic reaction for the photo-catalyst.

6. The system of claim 4, wherein controlling the ultraviolet radiation includes directing the ultraviolet radiation towards the photo-catalyst.

7. The system of claim 1, further comprising a set of auxiliary light emitters emitting radiation at a wavelength between approximately 240 nanometers and approximately 900 nanometers.

8. The system of claim 1, wherein at least one of the ultraviolet radiation sources operates in a UV-A range.

9. The system of claim 1, wherein the set of current conditions includes a temperature of a surface of the set of items, and wherein the controlling includes adjusting the temporal distribution of the ultraviolet radiation so that at least one of the ultraviolet radiation sources directed at the set of items operates in pulses, wherein the pulsed ultraviolet radiation allows time for at least one of:

cooling the set of items, heating the set of items, allowing an onset of a chemical reaction, and initiating a chemical reaction.

10. The system of claim 1, further comprising controlling a humidity level within the storage area.

11. A device comprising:

an enclosure including a storage area configured to store a set of items, wherein the storage area is formed of a plurality of layers, wherein the plurality of layers includes an outer ultraviolet reflective layer and an inner ultraviolet transparent layer;

a plurality of ultraviolet radiation sources configured to generate ultraviolet radiation directed at a set of items within a storage area, wherein at least one of the plurality of ultraviolet radiation sources are mounted to the inner ultraviolet transparent layer, wherein a first ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a first peak wavelength and a second ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a second peak wavelength that is different from the first peak wavelength; and

a monitoring and control system configured to;

monitor a set of current conditions of at least one of;

the storage area or the set of items located in the storage area, wherein the set of current conditions includes a change in a visual appearance of at least one of the set of items located in the storage area, wherein the change includes at least one of;

a change in color or a change in fluorescence due to microorganisms; and

control the ultraviolet radiation generated by the set of ultraviolet radiation sources using the set of current conditions and a target effect for the set of items by adjusting at least one of;

an intensity, a wavelength, a temporal distribution, or a spatial distribution of the ultraviolet radiation.

12. The device of claim 11, further comprising a set of auxiliary light emitters emitting radiation at a wavelength between approximately 240 nanometers and approximately 900 nanometers.

13. The device of claim 12, wherein the set of current conditions includes radiation emitted by the set of items in response to the radiation of the set of auxiliary light emitters.

14. The device of claim 11, wherein the set of current conditions includes a temperature of a surface of the set of items, and wherein the controlling includes adjusting the temporal distribution of the ultraviolet radiation so that at least one of the ultraviolet radiation sources directed at the set of items operates in pulses, wherein the pulsed ultraviolet radiation allows time for at least one of:

cooling the set of items, heating the set of items, allowing an onset of a chemical reaction, and initiating a chemical reaction.

15. The device of claim 11, further comprising a set of visible radiation sources configured to generate visible radiation within the storage area.

16. The device of claim 11, wherein at least one of the ultraviolet radiation sources is configured to operate at a wavelength to elicit a fluorescent response from a surface of the set of items.

17. The device of claim 11, further comprising a photo-catalyst located within the storage area.

18. The device of claim 17, wherein controlling the ultraviolet radiation includes directing the ultraviolet radiation towards the photo-catalyst.

19. A refrigeration device comprising:

a storage area configured to store at least one refrigerated item, wherein the storage area is formed of a plurality of layers, wherein the plurality of layers includes an outer ultraviolet reflective layer and an inner ultraviolet transparent layer;

a component configured to control at least one environmental condition of the storage area, wherein the at least one environmental condition includes at least one of;

a temperature, a humidity, a gas convection, or a fluid convection;

a plurality of ultraviolet radiation sources configured to generate ultraviolet radiation directed within the storage area, wherein at least one of the plurality of ultraviolet radiation sources are mounted to the inner ultraviolet transparent layer, wherein a first ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a first peak wavelength and a second ultraviolet radiation source in the plurality of ultraviolet radiation sources operates at a second peak wavelength that is different from the first peak wavelength; and

a monitoring and control system configured to;

monitor a set of current conditions of at least one of;

the storage area or the set of items located in the storage area, wherein the set of current conditions includes a change in a visual appearance of at least one of the set of items located in the storage area, wherein the change includes at least one of;

a change in color or a change in fluorescence due to microorganisms; and

control the ultraviolet radiation generated by the set of ultraviolet radiation sources using the set of current conditions and a target effect for the set of items by adjusting at least one of;

an intensity, a wavelength, a temporal distribution, or a spatial distribution of the ultraviolet radiation.

20. The device of claim 19, further comprising a photo-catalyst located within the storage area, wherein controlling the ultraviolet radiation includes directing the ultraviolet radiation towards the photo-catalyst.