Air purifying unit for e.g. operating theatres - circulating air through ster-ilising radiation treatment chamber without causing draughts

| The invention relates to a device for germination. clearing spaces. >>

Devices for degerming rooms are used in operating rooms, surveillance places and sick rooms, especially in hospitals, as well as in doctors' offices to sterilize the air in the room. They contain chambers provided with quartz lamps, through which the air is displaced. Ozone is formed in the chambers as a result of the short-wave radiation from quartz lamps, which makes possible effective germ-freeing. The object of the invention is to provide a device for the germ-free mailing of rooms, which sterilizes the amount of air in the room as evenly as possible, which adapts well to the most diverse environments and avoids unpleasant drafts in the room.

The device for sterilizing rooms is characterized

0 7 9 8 4' by having a. radial blower is mounted in a suction container large in relation to its dimensions, in the walls of which is arranged an air inlet opening which occupies a large part of the wall and is closed by a filter, while with the vertically extending outlet duct of the radial blower a , ί of quartz lamp and. provided sterilization chamber is connected, above what?

second j a muffler as/filter is fitted, of which large diameter dg outlet opening j i is directed vertically upwards

A large amount of air is drawn in at a low flow rate through the air inlet opening.

The contamination of the air filter thus remains small. Similarly* disturbing noises are largely avoided. small flow velocities even close to the device the feeling of · ...

March,

In a preferred embodiment, the radial blower is a slow-running fan with large guide vanes. With this construction large amounts of air can be moved, while the noise of the ventilation and the flow rates are kept low.

According to the invention, the lower edge of the suction opening for the air is arranged at the lowest possible height above the floor, thereby reducing the suction effect of the radial blower. on the floor is greatly reduced. On the. dust lying on the floor is therefore not sucked in or swirled up in this embodiment.

According to the invention, the silencer is surrounded by one detachable hood. Mom it. When removing the hood, the sound filter can be easily removed from the appliance and, by a. new or purified filter must be replaced»

In another preferred embodiment, the walls of the head taper towards the top. This embodiment acts as a deflector for a portion of the degermed air leaving the second filter. While most of the degermed air rises in the space above the appliance, quantities of air especially at the edges of the second filter are dispersed by vortex

0 7 9 8 4 to different directions. The tapered hood bends the downward moving volumes of air to the side of the device

I so that the correct sterilized air is kept far from the suction opening <.

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This embodiment thus increases the effectiveness of the device.

According to the invention, the suction container and the sterilization chamber occupy about 3/4 and the second filter about 1/4 of the height of the device for sterilizing spaces. It's | proved that this embodiment is an optimum with respect tof^:

I the amount of germ-free air and the even distribution ί

I of these in the room as well as a minimum of ventilation noises and i

The invention also has for its object to provide a device for making a space of the above-mentioned type germ-free, wherein the filter at the air intake opening remains largely germ-free.

This is achieved according to the invention in that quartz lamps are arranged on the filter at the inlet opening for the air, so that the filter can be irradiated with it.

The irradiation already kills some germs before they reach the air filter. The germs that settle on the surface of the filter are rendered uncooperative by the continuous irradiation,

This arrangement improves the sterilization effect of the sterilization device 11 for degerming. |

It is therefore no longer necessary that filters after using the | device must be removed and disinfected after shorter or longer periods. This relieves the staff of the supervision of the establishment. Another advantage of the device according to the invention consists in the fact that odors are avoided which can occur due to evaporation of chemicals used for cleaning the filter after the device has been put into use. According to a preferred embodiment, the air inlet opening is arranged in the outer wall, in which opening a grid is placed, against which a space adjoins towards the interior of the device, in which the quartz lamps are arranged, while in a wall thereof.

0 7 9 8 4 | the. filter is installed. In this embodiment, the quartz lamps | protected from touching. The grid affects the envelope of the ; device is not harmful. It can be easily attached to round or flat.

_; walls of the facility are modified. !

I According to the invention, the quartz lamps are up and down against the inlet

I covered for the sky. This arrangement has the advantage that radiation emitted by f ι ii from the quartz lamps does not bulge into space. I device is pressing. Objects and persons are therefore also In the vicinity ; of the germ-free device is not affected by the radiation.

; caused Influences exposed.

According to the invention, the filter can be used with the. the air inlet.openlng xn the Casing can be placed in the lining of the wall of the room. This embodiment allows a quick, simple change of · • the filter. ' . According to another embodiment, the quartz lamps can be monitored via a delay switching device. switch off only after the blower has come to a standstill j. In this embodiment it is avoided that after the quartz lamps are switched off during the venting of the blower, germs can accumulate in the device and are blown into the room when the device is put into operation again. y

Moreover, this device has the advantage of a post-decoration of the interior space when the air is still. The device for making germs free thus offers a further safety against the unintentional spread of germs:

The invention is elucidated with reference to a drawing.

In this drawing shows:

* Fig. 1 shows a schematically indicated device for the . germ-free rooms In cross-section; ....

Fig. 2 shows a perspective view of this device.

a one with

A device 10 for sterilizing spaces is by cylindrical casing 1'2. surrounded, in the lower part where the inlet opening 14 for air is provided. This opening 14 . a large surface, which is closed by a grid 1Ö, spreads over one. large portion of the circumference of the envelope 12 consists of..

7-o 0 7 9 8 4 nr 5

The enclosure. 12 forms a house, set down at the lower end i ί

and is closed with a tub-shaped bottom portion 18. In addition to the tub/shaped bottom portion 18, legs 20 are attached to the housing. The ends of the legs 20 carry rotatably mounted rollers 22, of which the retaining members not shown in the drawing can be pivoted in the axial direction of the legs 20. The device 10 for making spaces germ-free can thus be transported easily.

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The lower part of the housing 12 forms a cue holder 24, | wherein a radial blower 26 is provided, which is housed in a housing 28. The housing 28 includes a vertical outlet duct p0 of large cross-section. !

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Connected to the channel 30 is a sterilization space 32, where quartz lamps 34 are provided, which emit an energy-rich radiation v short wavelength, whereby 32 cc h are formed in the sterilization space, which with the contacting air vn!

the sterilization space 32 oxidizes particles present. The rod ver pp

lamp bodies of the quartz lamps 34 are arranged in the direction of flow of the air flow generated by the blower. The air η) the particles or particles entrained with this air. germs, are located | therefore in a specific time in the range irradiated by the quartz lamps 3^'. As a result, a good germ-freeing is achieved.

Above the sterilization chamber 32 is a muffler 36 surrounded by a removable hood 38. The muffler 36, which has a great length extending in the direction of air flow, must be thoroughly cleaned,

The hood 3θ comprises a shoulder 40, the side wall of which has a recess. This recess is filled by an operating console 43, which has switches, signal lamps and measuring devices not shown in the drawing.

In the interior of the housing 12 adjoins against the grid 16 a space 42, in the rear wall of which a filter 44 is arranged. The top and bottom walls, as well as the side walls of the space 42 are sealed airtight. In the chamber 42 are located in front of the filter 44 quartz lamps 46, which, like the lamps 3^, emit an energy-rich radiation with a short wavelength, as a result of which the 4-S aen is developed in the chamber ©————— 73 0 7 S 8 h

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As a result, germs present in the aspirated air are already partially killed before they reach the air filter 44* Be zibh ·* ί germs accumulating on the surface of the filter 44 are removed by the

- ^v , [ uninterrupted irradiation rendered harmless.'. · . ί

The quartz lamps 46 are to the air inlet opening 14 by schematic.

roofed. As a result, radiation emitted by the quartz lamps 46 cannot reach the space outside the device 10, so that persons or objects in the vicinity of the device 10 are not exposed to influences of radiation.

The filter 44 cannot be passed through. frame t indicated in the drawing, which has an opening in the envelope with its front ih {l2 • ' i - * | can be set. The other front of the frame is expedient of;

| provided with a handle 50. When inserting a filter 44 in the J | opening will be this. slid in front of the space 42 as a rear wall. The filter 44 can therefore be exchanged easily and quickly. :

ï . ⁴ | Within the operating console 45 is a delay;

I switching device >2, die-between the. quartz lamps 34, 46 and the snaning supply is provided. As a result of the switching device 52, the quarter lamps 34, 46 are switched off only after the blower has come to a standstill.

turned off. As a result, the quartz lamps 34, 46 still exert their germicidal effect for a certain period of time when the air in the germicidal device 10 is stationary. In this way it is avoided that after the quartz lamps have been switched off, a fan that runs with a delay will draw in further air. can no longer be made germ-free. The germs present in the air would in this case accumulate in parts of the germ removal device 10 which are behind the chamber 32 . When the device 10 is switched on again, germs could then enter the space. With the aid of the switching device 52, a post-sterilization can be carried out when the device 10 is switched off. The device 10 therefore offers a very high degree of safety against the unintentional spreading of germs in the room. ~ ·

The arrangement of the quartz lamps 46 avoids to a large extent that the air is drawn in from the air. space available germs on or in the filter 44 buy up and can v.@rmenigmetaal.eh*.

0 79 8 4' !

In such a breeding ground for germs, the germs would accumulate in the air conveyed in the sterilization room 52 to such an extent that the operation of the device is adversely affected. This objection

J would only be eliminated by frequent cleaning and disinfection of the air inlet filter»

Because of the continuous germination of the filter 44, this can be done for a long time in the device 10 for the germination-free filling. li be left. | ! . !

This means facilitating the supervision of the establishment

10« Furthermore, there is no odor nuisance caused by the evaporation of

I filter adhering disinfectants could be induced. !

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