RO118844B1 - Installation for air disinfection using a concentrated flux of non-ionizing radiation - Google Patents

Abstract

The invention relates to an installation for air disinfection employed especially for operative interventions in case of bacterial pollution. According to the invention, the installation comprises a housing (1) wherein a fan (2) power-supplied at intervals is placed, a filter (3) with an adjacent sensor (4) being placed above the fan (2), while a static helix (5) imparting a helical motion to an air flow is mounted in the vicinity of said fan (2), said air flow passing then in front of several tubes (6) which emit germicidal UV radiations and which are mounted in some focus points of an ellipsoid mirror (7) in order to form a resonant cavity of UV radiations, and finally, the flow passing through an active carbon filter (8) for the neutralization of the ozone, while the disinfected air is exhausted through some side orifices confined by some parabollic walls (9).

Description

RO 118844 B

The invention refers to an installation for air disinfection with a concentrated flow of non-ionizing radiation, intended in particular for operative interventions in case of bacterial pollution in rooms such as sanitary facilities, public catering, heritage warehouses, libraries, archives, hotels, as well as in air-conditioned installations, especially in case of bacteriological attack (civil, military shelters, homes, etc.).

A device is known, called an ecological mini air conditioner, equipped with a filter and a fan that allows air to circulate in a room, through an area with germicidal radiation emitted by a specialized tube, the air being heated and cooled using Peltier elements.

Also known are air conditioning installations equipped with devices that filter the air, then subjecting it to heat and humidification treatments

These installations require high energy consumption and have a low technical efficiency.

There is also the risk of the development of mold or bacteria cultures inside the piping through which the air-conditioned air circulates, due to the existing conditions (heat, humidity, darkness).

The problem that the invention solves consists in creating installations for the disinfection of recirculated air from rooms, with a high germicidal efficiency and which, when used in air conditioning installations, eliminate the possibility of any microbial development in the distribution pipes.

The problem is solved with an installation which, in one embodiment, comprises a fan above which is mounted a filter provided with an assembly for warning its clogging, a static propeller being placed near the filter, to impart a helical motion to a flow of air passing by some UV radiation tubes, mounted in some foci that form a resonant cavity, with multiple reflections, the flow passing through an active carbon filter for the absorption of ozone formed due to the action of ultraviolet radiation on the oxygen in the air, and for the protection of people which would look inside the case, the air is discharged laterally, thanks to some parabolic walls. in another embodiment, the air disinfection installation consists of a rectangular module, which is interposed on the conditioned air distribution pipe and which contains inside four semi-ellipsoidal mirrors, in whose foci and in the common foci are positioned five tubes with the emission of germicidal radiation whose intensity is sufficient to cause the destruction of microorganisms, the installation also includes an additional activated carbon filter for ozone absorption, the operation of the germicidal tubes being optically signaled by some LEDs mounted on a small attached panel the module.

The installation according to the invention has the following advantages:

- achieves a maximum yield when disinfecting recirculated or air-conditioned air;

- increases the time of use of the ducts for the distribution of conditioned air, avoiding their pollution due to the development of microorganisms;

- requires low electricity consumption;

- protects people against ozone emission or irradiation.

The invention will be presented further, in connection with fig. 1...4, which represent:

- fig.1, logitudinal section through a recirculated air disinfection installation from the rooms;

- fig.2, longitudinal section through the installation according to fig.1;

- fig.3, general view of an air disinfection installation in air-conditioned air acquisition and distribution installations;

- fig.4, longitudinal section through the installation according to fig.3.

The installation for air disinfection with a concentrated flow of non-ionizing radiation, according to the invention, consists of a rectangular housing 1, in which the air is absorbed at the top by a fan 2, fed intermittently by means of a relay

Claims (2)

RO 118844 Β known time itself. The air being filtered by a filter 3, whose clogging is detected by a sensor 4 (by reducing the flow of filtered air), acquires a helical movement thanks to a static propeller 5, so that the volume of air, in its movement towards the exit holes, to come into contact with one or two tubes 6, germicidal, which emit ultraviolet radiation of type C (λ = 253.7 nm), mounted in the foci of an ellipsoidal mirror 7, thus forming a resonant cavity 55, where these radiations reach at maximum intensities. in order to eliminate small amounts of ozone due to the action of ultraviolet radiation on the oxygen contained in the treated air, the installation also contains an active carbon filter 8, and for the protection of people who might look through the lower part of the casing, the exit of the disinfected air takes place through two side holes, thanks to parabolic walls 9, painted black to reduce the reflection coefficient of ultraviolet radiation. in another embodiment, if it is desired to disinfect the air in the installations for obtaining and distributing air-conditioned air, the installation according to the invention is constituted by a rectangular casing 10, provided with some flanges 11, by means of which it is interspersed in the air-conditioned air distribution pipe, and in order to achieve total air disinfection, the housing 10 contains four semi-ellipsoidal mirrors 12 inside, having five tubes 13 mounted in their own foci and in the common foci, which emit UVC ultraviolet radiation (λ = 253.7nm), and whose operation can be monitored from a signal panel 14, thus obtaining a resonant cavity with high germicidal efficiency. demand 1. Installation for air disinfection with a concentrated flow of non-ionizing radiation, used in particular for the disinfection of recirculated air from rooms, characterized by the fact that it consists of a rectangular casing (1), inside which, on the upper part, 75 mounted a fan (2), fed intermittently, above which a filter (3) is placed, signaling the moment of clogging thanks to a sensor (4), near the fan a static propeller (5) is mounted, which gives a helical movement to a airflow coming into contact with one or two tubes (6) emitting germicidal ultraviolet radiation, mounted in the foci of an ellipsoidal mirror (7) to form a resonant cavity of 80 UV radiation, in the airflow passing through a filter with activated carbon (8), with the role of neutralizing the ozone obtained as a result of the action of UV radiation on the oxygen in the treated air, and for protection against irradiation, the installation also contains a system (9) that allows the disinfected air to exit laterally. 2. Installation for air disinfection with a concentrated flow of non-ionizing radiation, 85 characterized in that in the case of high air flows in air-conditioned air acquisition and distribution installations, inside a casing (10) provided with some clamping flanges (11 ), through which four semi-ellipsoidal mirrors (12) are interspersed in the air-conditioned air distribution pipe, which have five germicidal tubes generating type C UV radiation (13) mounted in the focus and in the common focus, whose operation 90 can be followed by optical signaling with LEDs, from a panel (14) mounted on the side of the housing (10) or at the dispatcher station, and for ozone neutralization, an active carbon filter (6) mounted in the housing is provided, in the treated air outlet area. The president of the examination committee: Eng. Cârstea Constantin Examiner: Eng. Spătaru Magdalena