AIR STERILIZING ASSEMBLY

• US 20120119108A1
• Filed: 08/13/2009
• Published: 05/17/2012
• Est. Priority Date: 05/20/2009
• Status: Active Grant

• Current Assignee: Nauchno-Proizvodstvennoe Predpriyatie Melitta Limited Liability Company
• Original Assignee: Yanex Intellectual Property Limited
• Inventors: Goldshtein, Yakov Abrammerovich, Shashkovsky, Sergei Gennadevich
• Granted Patent: US 8,497,491 B2
• Time in Patent Office: Days
• US Class Current: 250/432.R
• CPC Class Codes: A61L 2202/25 Rooms in buildings, passenger compartments
• CPC Class Codes: A61L 2209/11 Apparatus for controlling air treatment
• CPC Class Codes: A61L 9/20 Ultraviolet radiation
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Air disinfection device comprises a body that houses the power supply and control unit comprising a storage capacitor, a high-voltage DC power supply, an ignition pulse generator, a ferrite-core pulse transformer and a program control unit, and an ultraviolet radiation source mounted on the body in the form of a pulse gas discharge lamp enclosed in a tubular cooled casing transparent to bactericidal radiation. The storage capacitor and the pulse gas discharge lamp form a discharge circuit connected to the ignition pulse generator through the ferrite-core pulse transformer. The pulse gas discharge lamp is installed in a casing transparent to bactericidal radiation with convection air cooling capabilities provided by natural draft produced inside the casing, wherein the casing has one or several upper-level orifices in its upper part and some lower-level orifices in its lower part, with the following ratio of parameters:

$h·\frac{S_{\mathrm{upper}}^2·S_{\mathrm{lower}}^2}{S_{\mathrm{upper}}^2+S_{\mathrm{lower}}^2}=\frac{1}{A}·C^2U_0^4F^2$

where h is the distance between the orifices of the upper and lower levels, m; S_upper—total surface area of the orifice in the upper level, m²; S_lower—total surface area of the orifice in the lower level, m²; A=(2÷30)·10¹³J²/m⁵s²—power correlation coefficient; C—capacity of energy storage capacitor, F; U₀—charge voltage of the energy storage capacitor, V; F—pulse repetition rate of the ignition pulse generator, Hz.

Claims

1. Air disinfection device comprises a body that houses the power supply and control unit comprising a storage capacitor, a high-voltage DC power supply, an ignition pulse generator, a ferrite-core pulse transformer and a program control unit, and an ultraviolet radiation source mounted on the body in the form of a pulse gas discharge lamp enclosed in a tubular cooled casing transparent to bactericidal radiation, wherein the storage capacitor and the pulse gas discharge lamp form a discharge circuit connected to the ignition pulse generator through the ferrite-core pulse transformer, characterized in that the pulse gas discharge lamp is installed in a casing transparent to bactericidal radiation with convection air cooling capabilities provided by natural draft produced inside the casing, wherein the casing has one or several upper-level orifices in its upper part and some lower-level orifices in its lower part, with the following ratio of parameters:

2. Device according to claim 1, characterized in that the ultraviolet radiation source is installed vertically on the body.

3. Device according to claim 2, characterized in that the pulse gas discharge lamp is U-shaped.

4. Device according to claim 1 or 2, characterized in that the lower-level orifices are made in the side surface of the casing.

5. Device according to claim 1, characterized in that the ultraviolet radiation source is installed horizontally, and the upper- and lower-level orifices are made in the side surface of the casing.