UV LED photocatalysis water purifying device

Patent metadata

Field	Value
Publication number	US-9896349-B2
Application number	US-201615291622-A
Country	US
Kind code	B2
Filing date	Oct 12, 2016
Priority date	Jun 22, 2016
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

The present invention provides a water purifying device that may include: an upper cover that is configured to have an inlet for liquid; two or more light source modules that are configured to include a light source that emits a UV ray; two or more light guide plates that are configured to guide, to the front, the UV ray that is incident through the lateral side thereof from the light source module to then be output; a purifying plate that is configured to provide a flow path through which liquid flows, and that is configured to provide a plate-type photocatalyst that is disposed on the flow path so that the UV ray emitted from the light guide plate reaches the plate-type photocatalyst in order to thereby purify the liquid; and a lower cover that is configured to have an outlet for the liquid.

First claim

What is claimed is:

1. A water purifying device comprising:
at least three plate-like sterilizing modules in a stack, the modules comprising:
a stack of rectangular flat plates, with at least a first plate, a second plate, a third plate, a fourth plate, and a fifth plate arranged in order;
wherein the first plate in the stack is an upper cover configured to have an inlet for a liquid in a first corner;
wherein the second plate in the stack is a first light guide with a first UV light emitting module disposed along at least one lateral edge, and configured to conduct light from the first module to a face of the first light guide towards the third plate in the stack;
wherein the third plate in the stack is a purifying plate that receives the liquid from the first plate and outputs the liquid to the fifth plate, and receives UV light from the second plate and a fourth plate, wherein the third plate is configured with a flow path that is rectangular and flows the liquid from the first corner to the opposite and nonadjacent second corner, and wherein a plate-type photocatalyst disposed in the middle of the flow path;
wherein the fourth plate in the stack is a second light guide with a second UV light emitting module disposed along at least one lateral edge and configured to conduct light from the second module to a face of the second light guide towards the third plate in the stack;
wherein the fifth plate in the stack is a lower cover configured to have an outlet for the liquid in the second corner;

wherein each module receives liquid in its inlet and passes it to its outlet such that the direction of flow of the liquid is alternated to create a serpentine-like flow path through the at least three plate-like sterilizing modules of the water purifying device.

2. The device according to claim 1 , further comprising in each sterilizing module reflectors positioned on the upper cover and the lower cover so as to face the light guide plate.

3. The device according to claim 1 , further comprising in each sterilizing module a reflector positioned on one side of the light guide plate.

4. The device according to claim 1 , further comprising in each sterilizing module a heat sink module that is configured to be disposed between the first light source module and the second light source module to radiate the heat generated from the light source.

5. The device according to claim 1 , further comprising in each sterilizing module a heat sink of which one side comes in contact with the light source module and of which another side comes in contact with the flow path of the purifying plate.

6. The device according to claim 1 , wherein the light source in each sterilizing module is an LED (Light Emitting Diode) module, and the LED module comprises a mold that is formed with a groove and an LED chip that is placed in the groove.

7. The device according to claim 6 , further comprising in each sterilizing module a pad positioned between a printed circuit board to which the LED module is attached and the light guide plate, and the thickness of the LED module is less than the pad so that the LED module is not in contact with the light guide plate.

8. The device according to claim 1 , further comprising in each sterilizing module an optical sheet that is provided on the side of the light guide plate so as to face the purifying plate, and that diffuses the UV ray emitted from the light guide plate.

Assignees

• Korea Inst Energy Res

Inventors

• Park Sukin
• Yoon Jae Kyung
• Lee Seung Jae
• Ryu In Soo
• Kim Gyu Duk

Classifications

• C02F2201/3228

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

• C02F2201/328

  Having flow diverters (baffles) · CPC title

• C02F2305/10

  Photocatalysts · CPC title

• C02F2201/3222

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

• C02F2201/3227

  Units with two or more lamps · CPC title