Storage device including target UV illumination ranges

• US 10,172,968 B2
• Filed: 08/07/2017
• Issued: 01/08/2019
• 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
• Application Number:
  US15/670,750
• Publication Number:
  US 20170333583A1
• Time in Patent Office: 519 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 formed of a plurality of layers including an outer ultraviolet reflective layer, an inner ultraviolet transparent layer, and a layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer. The refractive index of the layer between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer is less than the refractive index of the inner ultraviolet transparent layer. A set of ultraviolet radiation sources generate ultraviolet radiation directed at a set of items located within the storage area.

Claims

1. A system comprising:

a plurality of layers forming a storage area configured to contain a set of items, wherein the plurality of layers include an outer ultraviolet reflective layer, an inner ultraviolet transparent layer, and a layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer, wherein a refractive index of the layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer is lower than a refractive index of the inner ultraviolet transparent layer;

a set of ultraviolet radiation sources configured to generate ultraviolet radiation directed at the set of items within the storage area; 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; 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, wherein the layer comprises a hollow region.

3. The system of claim 1, wherein the outer ultraviolet reflective layer is at least 50% reflective.

4. The system of claim 1, wherein the inner ultraviolet transparent layer includes a plurality of protrusions extending into the layer between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer.

5. The system of claim 1, wherein the controlling includes adjusting the spatial distribution of the ultraviolet radiation by directing the ultraviolet radiation source at at least a portion of the set of items within the storage area.

6. The system of claim 1, wherein the outer ultraviolet reflective layer comprises a material chosen from a group consisting of:

aluminum and ePTFE.

7. The system of claim 1, further comprising a set of ultraviolet transparent shelves located within the storage area.

8. The system of claim 1, wherein the inner ultraviolet transparent layer comprises a material chosen from a group consisting of:

fused silica, fluoroplastic, alumina sol-gel, aerogel, and sapphire.

9. The system of claim 1, wherein a peak wavelength range for the ultraviolet radiation is between 275 nanometers and 280 nanometers.

10. The system of claim 1, wherein a peak wavelength range for the ultraviolet radiation is between 290 nanometers and 295 nanometers.

11. The system of claim 1, further comprising:

a set of visible light sources configured to generate visible light directed within the storage area; and

at least one visible camera configured to detect the visible light within the storage area.

12. A system comprising:

a plurality of layers forming a storage area configured to contain a set of items, wherein the plurality of layers include an outer ultraviolet reflective layer, an inner ultraviolet transparent layer, and a layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer, wherein a refractive index of the layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer is lower than a refractive index of the 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 set of ultraviolet radiation sources configured to generate ultraviolet radiation directed at the set of items within the storage area; 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; 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.

13. The system of claim 12, wherein controlling the ultraviolet radiation includes:

pulsing the ultraviolet radiation; and

measuring, using a fluorescence sensor, a time resolved fluorescence between each pulse of the ultraviolet radiation.

14. The system of claim 13, further comprising at least one visible light sensor configured to detect visible light within the storage area.

15. The system of claim 14, wherein at least one item in the set of items is a plant.

16. A refrigeration device comprising:

a plurality of layers forming a storage area configured to contain a set of items, wherein the plurality of layers include an outer ultraviolet reflective layer, an inner ultraviolet transparent layer, and a hollow layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer, wherein a refractive index of the hollow layer located between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer is lower than a refractive index of the 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 set of ultraviolet radiation sources configured to generate ultraviolet radiation directed at the set of items within the storage area; 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; 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.

17. The device of claim 16, wherein the outer ultraviolet reflective layer is at least 50% reflective.

18. The device of claim 16, 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 the ultraviolet radiation directed at the set of items is 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.

19. The device of claim 16, wherein the inner ultraviolet transparent layer includes a plurality of protrusions extending into the layer between the outer ultraviolet reflective layer and the inner ultraviolet transparent layer.

20. The device of claim 16, further comprising a set of ultraviolet transparent shelves located within the storage area.