Sleeve break detector for UV disinfection system lamp assembly

Patent metadata

Field	Value
Publication number	US-12552689-B2
Application number	US-201917608378-A
Country	US
Kind code	B2
Filing date	Dec 23, 2019
Priority date	May 2, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A UV disinfection system including at least one UV lamp assembly with a sleeve surrounding a UV lamp and defining an inner volume. The UV disinfection system further includes at least one pressure sensor. At least one non-return valve connects the inner volume of the at least one sleeve to the pressure sensor. The UV disinfection system is configured to detect a sleeve breakage by the resulting change in pressure at the at least one pressure sensor. A break detection device for a UV disinfection system with a pressure detector includes at least one tubing which communicates directly or indirectly with an inner volume of a sleeve surrounding at least one of a UV lamp unit.

First claim

The invention claimed is:

1 . A UV disinfection system, comprising:
at least one UV lamp assembly, each UV lamp assembly comprising a sleeve surrounding a UV lamp and defining an inner volume, at least one pressure sensing means, and at least one non-return valve connecting the inner volume of the sleeve to the pressure sensing means; wherein the UV disinfection system is configured to detect breakage of the sleeve by detecting a change in pressure at the at least one pressure sensing means.

2 . The UV disinfection system of claim 1 , wherein the pressure sensing means comprises a pressure switch, a pressure transducer, or a combination thereof.

3 . The UV disinfection system of claim 1 , further comprising an interface configured to directly or indirectly connect a sleeve breakage alarm to the UV disinfection system.

4 . The UV disinfection system of claim 3 , wherein the sleeve breakage alarm comprises a passive controller having an open or closed contact to a subsequent user operated controller.

5 . The UV disinfection system of claim 1 , further comprising a fluid inlet valve for controlling fluid entering the UV disinfection system, a fluid outlet valve for controlling fluid leaving the UV disinfection system, or a combination thereof.

6 . The UV disinfection system of claim 5 , wherein:
i) the pressure sensing means is configured to directly control at least one of the fluid inlet valve and the fluid outlet valve, wherein the pressure sensing means comprises a pressure switch, a pressure transducer, or a combination thereof; ii) the UV disinfection system further comprises a controller configured to indirectly control the at least one of the fluid inlet valve, the fluid outlet valve, or combination thereof, or iii) a combination of (i) and (ii).

7 . The UV disinfection system of claim 1 , wherein the pressure sensing means is connected directly or indirectly to the inner volume of the sleeve by a passage.

8 . The UV disinfection system of claim 7 , wherein the passage comprises tubing.

9 . The UV disinfection system of claim 8 , wherein the tubing comprises pneumatic tubing.

10 . A break detection device for a UV disinfection system having at least one UV lamp unit with a sleeve defining an inner volume surrounding the at least one UV lamp, the break detection device comprising:
a pressure sensing means; at least one tubing providing direct or indirect communication between the pressure sensing means and the inner volume of the sleeve; and a non-return valve disposed between the inner volume of the sleeve and the pressure sensing means.

11 . The break detection device of claim 10 , wherein the UV disinfection system comprises at least two UV lamp units, each UV lamp unit having a corresponding sleeve and a corresponding inner volume, and the at least one tubing comprises at least two tubings, each tubing pneumatically connected between the corresponding inner volume of one of the at least two UV lamp units and a manifold having two or more pneumatic ports.

12 . The break detection device of claim 11 , further comprising a non-return valve disposed between the inner volume of each corresponding sleeve and the pressure sensing means, the at least one nonreturn valve is disposed so that a fluid can unidirectionally pass from each of the at least two tubings into the manifold.

13 . The break detection device of claim 12 , wherein the manifold comprises a pressure release valve adapted to de-pressurize the manifold.

14 . The break detection device of claim 12 , wherein the manifold comprises a pressure test port adapted to pressurize the manifold.

15 . A UV water treatment plant comprising the UV disinfection system of claim 1 .

16 . A UV water treatment plant comprising the break detection device of claim 10 .

Assignees

• Xylem Europe Gmbh

Inventors

• Patterson Charlie
• Cantor Mike
• Burn Ray

Classifications

• C02F2303/14

  Maintenance of water treatment installations · CPC title

• C02F2209/03

  Pressure · CPC title

• C02F2201/326

  Lamp control systems · CPC title

• C02F2201/3227

  Units with two or more lamps · CPC title

• C02F1/325 Primary

  Irradiation devices or lamp constructions · CPC title