Ultraviolet-and-ozone disinfection apparatus having improvement on disinfection effect

• US 20040140269A1
• Filed: 06/11/2003
• Published: 07/22/2004
• Est. Priority Date: 01/22/2003
• Status: Active Grant

• Current Assignee: Senno Technology Inc.
• Original Assignee: Senno Technology Inc.
• Inventors: Chang, Steven Shih-Yi
• Granted Patent: US 6,932,903 B2
• Time in Patent Office: Days
• US Class Current: 210/748
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2201/003 Coaxial constructions, e.g. a cartridge located coaxially within another
• CPC Class Codes: C02F 2201/782 Ozone generators
• CPC Class Codes: C02F 2201/784 Diffusers or nozzles for ozonation
• CPC Class Codes: C02F 2301/02 Fluid flow conditions
• CPC Class Codes: C02F 2301/026 Spiral, helicoidal, radial
• CPC Class Codes: C02F 2303/04 Disinfection
• CPC Class Codes: C02F 9/00 Multistage treatment of water, waste water or sewage

Abstract

An ultraviolet-and-ozone disinfection apparatus 200 providing an improvement on disinfection, includes a disinfection tank 202, a mercury UV lamp 210 enclosed by a quartz tube 208 for generating UV light with air trapped between them undergoing UV irradiation to generate ozone, an ozone transmitting tube 216, a spiral water transmitting tube 215 wrapping around the quartz tube in a spiral manner to achieve sufficient disinfection by mixing ozone in water, a sleeve barrel enclosing the spiral tube. Along the entire flow path, water is exposed to UV radiation to achieve sufficient disinfection and reduce excessive ozone that is harmful to human health.

Claims

1. A dual mode of an ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect, which is a part of a water treatment system, the water treatment system is composed of a filter apparatus, a disinfection apparatus, and an ozone suction apparatus;

the dual mode of an ultraviolet-and-ozone disinfection apparatus comprising;

a disinfection barrel, housing the disinfection apparatus and having a water inlet and a water outlet;

a mercury ultraviolet lamp, which is centered in the disinfection apparatus and is used to generate UV light after switching on, and the UV light having a wavelength of about 185 nm can be used to generate ozone in the air and the one having a wavelength of about 254 nm can be used to disinfect and destroy excessive ozone;

a quartz tube is a semi-transparent tube which can be penetrated by the UV light with wavelength of 254 nm but can block the UV light with wavelength of 185 nm, also the mercury UV lamp is enclosed in the quartz tube where air is saturated inside, the quantity of ozone generated by the UV irradiation with the wavelength of about 185 nm is more than the quantity of ozone destroyed by the UV irradiation having a wavelength of about 254 nm;

an ozone transmitting tube with an air inlet inserted in the gap between the mercury UV lamp and the quartz tube, and the air in the gap can generate ozone through the irradiation by UV light, and the ozone is drawn into the ozone suction apparatus through the ozone transmitting tube which the UV light cannot penetrate through since it is a non-transparent one;

a spiral water transmitting tube, enclosing the quartz tube in spiral manner with one end of the tube connected to a water inlet while the other end is connected to a water outlet, and the ozonated water transmitted through the water inlet from the ozone suction apparatus can mixes homogeneously, but the UV light cannot penetrate the translucent spiral water transmitting tube since it is a non-transparent one; and

a sleeve barrel enclosing the exterior part of the spiral water transmitting tube, one end of the sleeve barrel is closed off at the top of the disinfection tank and the other end an opening facing the bottom of the disinfection tank;

whereby, water flowing out of the spiral water transmitting tube can create a return flow from the downstream flow impact, the water then flows back to surround the quartz tube along the exterior of the spiral tube and through the gap between the pitch of the spiral shape and the sleeve barrel, and all the method following the path, water is exposed to UV irradiation having a wavelength of about 254 nm penetrating through the quartz tube, at last, water that flows out of the disinfection tank is available for drinking water.

2. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1 wherein one end of the sleeve barrel is closed off at the top of the disinfection tank and another end of the sleeve barrel is closed off at the bottom of the disinfection tank, so the sleeve barrel itself can remove the disinfection tank which houses the disinfection apparatus and therefore eliminates the disinfection tank.

3. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1 wherein the water inlet and the water outlet of the disinfection tank can be disposed anywhere in the disinfection tank.

4. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1 can be a single mode of ultraviolet disinfection apparatus having improvement on UV disinfection effect.

5. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1, wherein the disinfection tank is made of material selected from the group consisting of plastic, stainless steel and glass.

6. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1, wherein the number of the mercury of UV lamp is not limited to one but can be increased dependent on the actual need.

7. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1, where the spiral water transmitting tube is made of material selected from the group consisting of plastic and glass.

8. The ultraviolet-and-ozone disinfection apparatus having an improvement on disinfection effect of claim 1, wherein the sleeve barrel is made of material selected from the group consisting of plastic, Teflon, stainless steel, and glass.