Photo-electronic air purifying disinfector

• US 20060018805A1
• Filed: 07/14/2005
• Published: 01/26/2006
• Est. Priority Date: 07/19/2004
• Status: Active Grant

• Current Assignee: John Manufacturing Limited
• Original Assignee: John Manufacturing Limited
• Inventors: Yuen, John Se-Kit
• Granted Patent: US 7,364,605 B2
• Time in Patent Office: Days
• US Class Current: 422/121
• CPC Class Codes: A61L 9/20 Ultraviolet radiation
• CPC Class Codes: A61L 9/22 Ionisation
• CPC Class Codes: B03C 3/016 by acoustic or electromagnetic energy, e.g. ultraviolet light
• CPC Class Codes: B03C 3/155 Filtration
• CPC Class Codes: F24F 8/194 by filtering using high voltage
• CPC Class Codes: F24F 8/22 using UV light
• CPC Class Codes: F24F 8/30 by ionisation
• CPC Class Codes: F24F 8/80 Self-contained air purifiers
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A photo-electronic air purifying disinfector firstly filters out airborne impurities using a washable filter screen. It then utilizes an activated carbon filter to filter out airborne bacteria and germs. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. It also utilizes a negative ion generator to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves cathodic high-voltage output that is discharged via a carbonized fibre. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Claims

1. A photo-electronic air purifying disinfector comprising a housing containing a turbine extractor, an electric motor, one or more extreme-UV light tubes, an air arresting unit, a power supply cable, a cathodic high-voltage carbonized fibre and an activated carbon filter.

2. The disinfector according to claim 1, wherein the housing has a generally square-column shape.

3. The disinfector according to claim 1, wherein the housing also contains an electrical circuit board, switches and indicator lights for controlling the operation of the disinfector.

4. The disinfector according to claim 1, wherein the air arresting unit has a front and a back light shield, which prevent extreme-UV light from escaping from the housing, thus protecting the user'"'"'s eyes.

5. The disinfector according to claim 1, wherein the one or more extreme-UV light tubes are removable and may be replaced.

6. The disinfector according to claim 1, wherein the filter is removable and may be replaced.

7. The disinfector according to any claim 1, wherein the housing has a hand hold which allows easy manhandling, and in addition the disinfector may be hung on a wall.

8. An electrical circuit system that is capable of improving specific characteristics of the environment, specifically for use in purifying indoor air and increasing the level of anions contained in the air, wherein the electrical circuit system includes.

a negative ion generating circuit;

and

a circuit which enables the emission of UV light at the wavelength of 253.7 nm from an extreme-UV light tube.

9. The electronic circuit according to claim 8, wherein the cathodic high-voltage output value is within the range of 4.5 kV to 8.5 kV.

10. The electronic circuit system according to claim 8, wherein a rheostat used in the negative ion generating circuit has the function of regulating the output of cathodic high-voltage.

11. The electronic circuit system according to claim 8, wherein a rheostat used in the circuit to emit UV light at the wavelength of 253.7 nm from a UV light tube has the function of regulating the output current.

12. The electronic circuit according to claim 8, having first and second continuous alternating cycle modes, the first involving high voltage cathodic output discharged via a carbonized fibre, the ionized air containing the anions then being expelled by a turbine extractor;

the second involving turning on extreme-UV light tubes which emit extreme-UV light eliminating airborne bacteria, germs and mould as they pass the tubes, and in addition allowing users to choose to operate in the first mode or in the second mode separately or to choose continuous simultaneous operation or to choose operation of the two modes in an alternating cycle.