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US Patent Issued 2024 – US 11957803 B2 “Ultraviolet apparatus for food disinfection”

Inventors: Lee; Jiyoon et al.

Abstract

A disinfecting apparatus including a housing to accommodate at least one tray therein, the housing having a first side and a second side, an ultraviolet (UV) light source disposed in the housing and configured to emit UV light towards the tray, and a plurality of doors including a first door and a second door disposed on the first side and the second side of the housing, respectively, in which the first door and the second door are configured to be opened in a direction away from the housing.

Tags/Keywords: ultraviolet, UV, disinfecting apparatus, tray, housing

Claims

1. A disinfecting apparatus comprising: a housing to accommodate at least one tray therein, the housing having a first side and a second side; an ultraviolet (UV) light source disposed in the housing and configured to emit UV light towards the tray; a lighting unit spaced apart from the UV light source and configured to emit white light; and a plurality of doors including a first door and a second door disposed on the first side and the second side of the housing, respectively, wherein the first door and the second door are configured to be opened in a direction away from the housing, and wherein the UV light source and the lighting unit are configured to emit light at different times.

2. The disinfecting apparatus of claim 1, wherein the first side and the second side are opposite to each other.

3. The disinfecting apparatus of claim 1, wherein: the housing further has a third side opposite to the first side; and the first side and the second side are adjacent to each other.

4. The disinfecting apparatus of claim 1, further comprising a first access button to open at least one of the first door and the second door.

5. The disinfecting apparatus of claim 4, wherein the first access button is disposed in the first side of the housing.

6. The disinfecting apparatus of claim 4, wherein the first access button is disposed remotely from the housing.

7. The disinfecting apparatus of claim 1, wherein both of the size and the number of the first door are different from that of the second door.

8. The disinfecting apparatus of claim 1, further comprising a processor to sequentially operate the first door, the UV light source, and the second door.

9. The disinfecting apparatus of claim 8, further comprising a locking unit disposed in the housing, wherein the processor causes the locking unit to keep the first and second doors from opening while the UV light source emits UV light.

10. The disinfecting apparatus of claim 8, wherein the UV light source is configured to emit light having a wavelength in a range of about 200 nm to about 280 nm at about 0.1 joules/cm.sup.2.

11. The disinfecting apparatus of claim 10, wherein the UV light source is configured to emit UV light towards the tray less than about 30 seconds.

12. The disinfecting apparatus of claim 11, wherein the UV light source is configured to emit UV light towards the tray for about 10 to about 20 seconds.

13. The disinfecting apparatus of claim 1, wherein the tray is configured to extend outwardly from the housing via the second door once the UV light emission has been completed.

14. The disinfecting apparatus of claim 1, wherein the UV light source includes a first UV lighting unit and a second UV lighting unit configured to emit UV light having different wavelengths.

15. The disinfecting apparatus of claim 14, wherein the lighting unit is configured to illuminate the interior of the housing.

16. The disinfecting apparatus of claim 15, wherein the lighting unit is configured to emit light having a first color when the first door is opened, and is configured to emit light having a second color different from the first color when the second door is opened.

17. The disinfecting apparatus of claim 1, further comprising a reflective film disposed in the housing.

18. A disinfecting apparatus comprising: a housing to accommodate at least one tray therein, the housing having a first side and a second side; an ultraviolet (UV) light source disposed in the housing and configured to emit UV light towards the tray; a plurality of doors including a first door and a second door disposed on the first side and the second side of the housing, respectively, a first access button to open at least one of the first door and the second door; and a second access button to open the other one of the first door and the second door, wherein the first door and the second door are configured to be opened in a direction away from the housing.

19. The disinfecting apparatus of claim 18, wherein the second access button is disposed at a lower elevation that the of the first access button.

20. A disinfecting apparatus comprising: a housing to accommodate at least one tray therein, the housing having a first side and a second side; a plurality of doors including a first door and a second door disposed on the first side and the second side of the housing, respectively; an ultraviolet (UV) light source disposed in the housing and configured to emit UV light towards the tray; a rail disposed inside the housing; and a mount on which the UV light source is disposed and coupled to the rail, wherein the first door and the second door are configured to be opened in a direction away from the housing, and wherein the mount is configured to slide along the rail within the housing while emitting UV light towards the tray.

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