Biocidal purification reactor

Patent metadata

Field	Value
Publication number	US-9617171-B2
Application number	US-201414889608-A
Country	US
Kind code	B2
Filing date	Apr 24, 2014
Priority date	May 22, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A biocidal purification reactor, including a main cylinder tube ( 1 A; 1 B), at least one end cap ( 2 A, 2 B, 2 C) closing at least one axial end opening of the main cylinder tube ( 1 A; 1 B), at least two ports ( 3 A, 3 B) communicating with the interior volume ( 4 ) of the main cylinder tube ( 1 A; 1 B) in the vicinity of the respective axial ends of the cylinder tube ( 1 A; 1 B), and at least one of said end caps ( 2 A) or said main cylinder tube ( 1 B) including a UV-light source ( 7 A; 7 B).

First claim

The invention claimed is:

1. A biocidal purification reactor, including
a main cylinder tube having opposite axial ends and an interior volume;
at least one end cap closing an opening at least one said axial end of the main cylinder tube;
at least two ports communicating with the interior volume of the main cylinder tube in the vicinity of the respective axial ends of the cylinder tube;
wherein said at least one end cap includes a UV-light source,
wherein said UV-light source is thermally connected to a heat sink adapted to dissipate heat from the UV-light source to the environment, and
wherein the heat sink is in the form of a ring segment with surface area increasing features provided at the end cap.

2. The biocidal purification reactor according to claim 1 , wherein the reactor includes a pair of end caps respectively closing openings at said opposite axial ends of the main cylinder tube.

3. The purification reactor according to claim 1 , wherein the UV-light source is separated from the interior volume of the main cylinder tube by an UV-transparent material.

4. The purification reactor according to claim 3 , wherein the ring segment is arranged in the end cap on a side of the UV-transparent material facing away from the interior volume of the main cylinder tube.

5. The purification reactor according to claim 3 , wherein said UV-transparent material is made from quartz or silica glass.

6. The purification reactor according to claim 1 , wherein the end cap(s) is/are at least partially made from a material that reflects UV-rays.

7. The purification reactor according to claim 6 , wherein said material that reflects NV-rays is aluminum or PTFE or stainless steel.

8. The purification reactor according to claim 6 , wherein said end cap(s) is/are at least partially made from a material that reflects UV-rays at portions exposed to the light radiation from the UV-light source.

9. The purification reactor according to claim 1 , wherein a portion of the end cap(s) is formed as a reflector for directing the light rays emitted from the UV-light source towards the interior volume of the main cylinder tube.

10. The purification reactor according to claim 9 , wherein said reflector is parabolic or circular or combinations thereof.

11. The purification reactor according to claim 1 , wherein the UV-light source is a UV-C-light source including at least one LED adapted to emit light in the UV-C wavelength range of 220 nm-300 nm.

12. The purification reactor according to claim 11 , wherein the main cylinder tube includes a UV-light source, and wherein a plurality of LEDs are provided in one or more arrays that is/are arranged along the length of the main cylinder tube.

13. The purification reactor according to claim 12 , wherein the one or more arrays of LEDs are located in corresponding openings or recesses of a cylindrical shell made of UV-reflective material that forms an element of the main cylinder tube.

14. The purification reactor according to claim 13 , wherein a cylinder made from an UV-transparent material is arranged between the cylindrical shell and the interior volume of the main cylinder tube.

15. The purification reactor according to claim 14 , wherein said cylinder is made from quartz or silica glass.

16. The purification reactor according to claim 11 , wherein said LED light source is adapted to emit light in the UV-C wavelength range of 260 nm+/−5 nm.

17. The purification reactor according to claim 11 , wherein the LED(s) is/are mounted on a PCB including a metal base.

18. The purification reactor according to claim 1 , wherein said main cylindrical tube has inner peripheral surfaces, and wherein at least part of the inner peripheral surfaces of the main cylinder tube are formed with a UV-reflecting material.

19. The purification reactor according to claim 18 , wherein the UV-reflecting material is provided as a lining or sheet overlaying the respective surface of a supporting tube body.

20. The purification reactor according to claim 18 , wherein said at least part of the inner peripheral surfaces of the main cylinder tube are formed with a UV-material that is PTFE or aluminum or stainless steel.

21. The purification reactor according to claim 18 , wherein the UV-reflecting material is provided as a coating applied on the respective surface of a supporting tube body.

22. The purification reactor according to claim 18 , wherein the supporting tube body is made from the solid UV-reflecting material.

23. The purification reactor according to claim 1 , wherein said main cylindrical tube has inner peripheral surfaces, and wherein at least the parts of the inner peripheral surfaces of main cylinder tube that in operation come in contact with a medium to be processed in the reactor are covered by a UV-transparent separation layer.

24. The purification reactor according to claim 23 , wherein said UV-transparent separation layer is quartz or silica glass.

25. The purification reactor according to claim 1 , comprising a third port communicating with the interior volume of the main cylinder tube between the at least two ports in the vicinity of the respective axial ends of the cylinder tube.

Assignees

• Merck Patent Gmbh

Inventors

• Rajagopalan Pascal
• Gross Julien
• Kano Ichiro
• Gaignet Yves

Classifications

• C02F2201/3228

  Units having reflectors, e.g. coatings, baffles, plates, mirrors · CPC title

• C02F2201/3227

  Units with two or more lamps · CPC title

• C02F1/325 Primary

  Irradiation devices or lamp constructions · CPC title

• C02F2303/04

  Disinfection · CPC title

• C02F2201/3222

  Units using UV-light emitting diodes [LED] · CPC title