Photo-electronic air purifying and disinfecting system

• US 20060005708A1
• Filed: 06/22/2005
• Published: 01/12/2006
• Est. Priority Date: 06/23/2004
• Status: Active Grant

• Current Assignee: John Manufacturing Limited
• Original Assignee: John Manufacturing Limited
• Inventors: Yuen, John Se-Kit
• Granted Patent: US 7,270,696 B2
• Time in Patent Office: Days
• US Class Current: 96/16
• 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: B03C 3/32 Transportable units, e.g. for cleaning room air
• CPC Class Codes: B03C 3/38 Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames

Abstract

A 3-in-1 photo-electronic air purifying and disinfecting system, which utilizes alternating current, has an activated carbon filter used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. 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. An anion generator is also included to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic 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 and disinfecting system comprising a housing containing an electric motor, an air drum combination, one or more extreme-UV light tubes, one or more air-arresting units, a power supply cable, a cathodic high-voltage carbonized fibre and an activated carbon filter.

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

3. The system according to claim 1, wherein the housing also contains an electric circuit board, a remote control switch and indicator lights for controlling the operation of the system.

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

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

7. The system according to claim 1, wherein an air outlet can oscillate freely and its angle is adjustable.

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 system according to claim 8, wherein the cathodic high-voltage output 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 an air drum;

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.