Fluid sterilizing device

Patent metadata

Field	Value
Publication number	US-11312642-B2
Application number	US-201916381816-A
Country	US
Kind code	B2
Filing date	Apr 11, 2019
Priority date	Mar 31, 2017
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A fluid sterilizing device includes a first reaction chamber, a second reaction chamber, a communication chamber and a light source. The first reaction chamber is connected to a fluid inlet. The second reaction chamber is connected to a fluid outlet. The communication chamber is connected the first reaction chamber with the second reaction chamber. The light source is configured to emit sterilization light to enter the first reaction chamber and the second reaction chamber. The fluid inlet allows a fluid to enter the first reaction chamber, the communication chamber allows the fluid to pass through and enter the second reaction chamber, and a flow velocity distribution of the fluid in the second reaction chamber is different from that of the fluid in the first reaction chamber.

First claim

What is claimed is:

1. A fluid sterilizing device, comprising:
a first reaction chamber connected to a fluid inlet;
a second reaction chamber connected to a fluid outlet;
a communication chamber connecting the first reaction chamber with the second reaction chamber; and
a light source configured to emit sterilization light to enter the first reaction chamber and the second reaction chamber;
wherein the fluid inlet allows a fluid to enter the first reaction chamber, the communication chamber allows the fluid to pass through and enter the second reaction chamber, and a flow velocity distribution of the fluid in the second reaction chamber is different from a flow velocity distribution of the fluid in the first reaction chamber,
wherein the sterilization light has a light-emitting optical axis parallel to an extension of the first reaction chamber and an extension of the second reaction chamber, and
wherein the fluid flows in a first direction in the first reaction chamber, the fluid flows in a second direction in the second reaction chamber, and the second direction is different from the first direction.

2. The fluid sterilizing device according to claim 1 , wherein the second direction is opposite to the first direction.

3. The fluid sterilizing device according to claim 1 , wherein the flow velocity distribution of the fluid in the second reaction chamber comprises a flow velocity in an outer sidewall of the second reaction chamber, a flow velocity in a central region of the second reaction chamber, and a flow velocity in an inner sidewall of the second reaction chamber, wherein the flow velocity in the outer sidewall of the second reaction chamber is larger than the flow velocity in the central region of the second reaction chamber, and the flow velocity in the central region of the second reaction chamber is larger than the flow velocity in the inner sidewall of the second reaction chamber.

4. The fluid sterilizing device according to claim 1 , wherein the Reynolds number of the fluid in a region of the second reaction chamber is larger than the Reynolds number in the first reaction chamber.

5. The fluid sterilizing device according to claim 4 , wherein the fluid is in a turbulent state in the second reaction chamber.

6. The fluid sterilizing device according to claim 1 , wherein a cross-sectional area of the fluid inlet is substantially equal to a cross-sectional area of the fluid outlet, and a cross-sectional area of the communication chamber is not less than half of the cross-sectional area of the fluid inlet or the cross-sectional area of the fluid outlet.

7. The fluid sterilizing device according to claim 1 , wherein the communication chamber has a cavity.

8. The fluid sterilizing device according to claim 7 , wherein a section of the cavity is square.

9. The fluid sterilizing device according to claim 1 , wherein the first reaction chamber, the second reaction chamber and the communication chamber form a U-shaped flow path.

10. The fluid sterilizing device according to claim 1 , further comprising:
a fluid sensor disposed in the first reaction chamber, wherein the fluid forms a turbulent flow after passing through the fluid sensor.

11. The fluid sterilizing device according to claim 1 , further comprising:
a fluid sensor configured to sense passage of the fluid and a flow velocity of the fluid.

12. The fluid sterilizing device according to claim 1 , wherein the power of the sterilization light is adjusted according to the flow velocity of the fluid.

13. The fluid sterilizing device according to claim 1 , further comprising:
a fluid sensor having the first reaction chamber.

14. The fluid sterilizing device according to claim 12 , wherein when the fluid sensor senses that the fluid is in a non-flow state, the light source continuously emits the sterilization light in a low power state.

15. The fluid sterilizing device according to claim 14 , wherein when the fluid sensor senses that the fluid is in a flow state, the light source continuously emits the sterilization light in a high power state.

16. The fluid sterilizing device according to claim 11 , wherein when the fluid sensor senses that the fluid is in a non-flow state, the light source emits the sterilization light in a pulse signal manner.

17. The fluid sterilizing device according to claim 16 , wherein when the fluid sensor senses that the fluid is in a flow state, the light source emits the sterilization light in a continuous light-emitting manner.

18. The fluid sterilizing device according to claim 11 , wherein when an external signal is activated, the light source is delayed to emit the sterilization light.

19. The fluid sterilizing device according to claim 18 , wherein when an external signal ends, the light source stops emitting the sterilization light after being delayed for a period of time.

20. The fluid sterilizing device according to claim 1 , further comprises:
a spoiler disposed in the first reaction chamber, wherein the spoiler has a plurality of through holes for changing a flow field of the fluid passing through the through holes.

21. A fluid sterilizing device, comprising:
a light source configured to emit sterilization light;
a reaction chamber configured to allow fluid to pass through, wherein the sterilization light is emitted to the reaction chamber;
a fluid sensor configured to sense passage of the fluid and a flow velocity of the fluid;
a light sensor configured to receive and sense a reflection light of the sterilization light that is emitted to enter the reaction chamber; and
a controller configured to control a light intensity of the sterilizing light according to an intensity of the reflection light.

22. The fluid sterilizing device according to claim 21 , further comprises:
a calculation unit configured to determine bacteria content and water quality of the fluid according to the light intensity of the reflection light.

23. The fluid sterilizing device according to claim 21 , wherein when the fluid sensor senses that the fluid is in a non-flow state, the light source continuously emits the sterilization light in a low power state.

24. The fluid sterilizing device according to claim 23 , wherein when the fluid sensor senses that the fluid is in a flow state, the light source continuously emits the sterilization light in a high power state.

25. The fluid sterilizing device according to claim 21 , wherein when the fluid sensor senses that the fluid is in a non-flow state, the light source emits the sterilization light in a pulse signal manner.

26. The fluid sterilizing device according to claim 25 , wherein when the fluid sensor senses that the fluid is in a flow state, the light source emits the sterilization light in a continuous light-emitting manner.

27. A fluid sterilizing device, comprising:
a first reaction chamber connected to a fluid inlet;
a second reaction chamber connected to a fluid outlet;
a communication chamber connecting the first reaction chamber with the second reaction chamber; and
a light source configured to emit sterilization light to enter the first reaction chamber and the second reaction chamber;
wherein the fluid inlet allows a fluid to enter the first reaction chamber, the communication chamber allows the fluid to pass through and enter the second reaction chamber, and a flow velocity distribution of the fluid in the second reaction cham

Assignees

• Ind Tech Res Inst

Inventors

• Lu Chien-Chun
• Hsu Chen-Peng
• Muthuramalingam Karthickraj

Classifications

• C02F1/325 Primary

  Irradiation devices or lamp constructions · CPC title

• C02F1/008

  Control or steering systems not provided for elsewhere in subclass C02F · CPC title

• C02F2301/024

  Turbulent · CPC title

• C02F2201/326

  Lamp control systems · CPC title

• C02F2209/40

  Liquid flow rate · CPC title