Photo-electronic air purifying and disinfecting system

• US 7,270,696 B2
• Filed: 06/22/2005
• Issued: 09/18/2007
• Est. Priority Date: 06/23/2004
• Status: Expired due to Fees

• Current Assignee: John Manufacturing Limited
• Original Assignee: John Manufacturing Limited
• Inventors: Yuen, John Se-Kit
• Primary Examiner(s): Chiesa; Richard L.
• Application Number:
  US11/158,029
• Publication Number:
  US 20060005708A1
• Time in Patent Office: 818 Days
• Field of Search: 96/16, 962/24, 422/24, 422/121, 422/186.04, 422/186.3
• 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 fiber. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mold 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 air drum, an electric motor for driving the air drum to produce an airflow, 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, wherein the one or more air-arresting units concentrates or deflects the airflow into a slot containing a respective one of the one or more extreme-UV light tubes.

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. The system according to claim 1, including multiple said extreme-UV light tubes, wherein the air arresting units concentrate or deflect the airflow into respective said slots each containing one of said extreme-UV light tubes.

9. 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 for a cathodic high-voltage carbonized fibre; and

a circuit which enables the emission of UV light at the wavelength of 253.7 nm from one or more extreme-UV light tubes,

wherein the electrical circuit system has first and second modes, the first involving cathodic high-voltage output discharged via the cathodic high-voltage carbonized fibre, the ionized air containing the anions then being expelled by an air drum;

the second involving turning on the one or more extreme-UV light tubes which emit extreme-UV light eliminating airborne bacteria, germs and mould as they pass the one or more tubes, and the electrical circuit system in addition allows a user 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 a continuous alternating cycle.

10. The electrical circuit system according to claim 9, wherein the cathodic high-voltage output is within the range of 4.5 kV to 8.5 kV.

11. The electrical circuit system according to claim 9, wherein a rheostat used in the negative ion generating circuit has the function of regulating the output of cathodic high-voltage.

12. The electrical circuit system according to claim 9, wherein a rheostat used in the circuit to emit UV light at the wavelength of 253.7 nm from the one or more UV light tubes has the function of regulating the output current.