DE7506026U - DEVICE FOR FILTERING AIR IN LIVING AND WORKING SPACES - Google Patents

Description

J 7 * 2

PLI 1-Ki / Vo February 20 - \ "'' ^3Γ ·

ROBERT BOSC H GMBH in Stuttgart

Device for cleaning air in living and working rooms

The invention relates to a device for cleaning of air in living and working rooms, with a fan and one Electrostatic filter upstream or downstream of the fan.

In electrostatic filters, ozone (Ο,) is formed in the air under the influence of the electric field, the concentration of which is decisive for the germicidal effect of the filter and the build-up of smoke in the filter. For these reasons it is desirable that the _{amount of O 7} in the air in the filter is as large as possible. On the other hand, however, it should be noted that excessively high O ^ concentrations in the air exiting the filter or the device provided with the filter, which exceed the specified MAK or MIK values, are harmful to the people in the R β Hr. let η k ö η now.

'The invention Ii.orjt the object of the devices

J 742

- B.

to be trained with simple means in such a way as initially mentioned, that the electrostatic filter has the best possible cleaning, germicidal and odor eliminating effect without the Air escaping from the device carries a harmful amount of Cu with it.

This object is achieved according to the invention in that in the flow path the air behind the high-voltage part of the electrostatic filter, a filter body made of a chemical with Cu reacting substance, such as activated carbon, is arranged, which is the Cu content of the air generated in the high-voltage part of the filter degrades to a value that is harmless to humans.

It is thereby achieved that in the actual cleaning area of the electrostatic filter, higher O _z concentrations than before can be permitted, which improve the filter effect or allow smaller filter dimensions with the same filter effect.

The arrangement of an O, filter is not limited to devices which essentially only consist of a fan and the filter. The Cu filter can also be used advantageously in fan convectors are intended for living rooms which are equipped with additional air treatment devices, such as a coarse filter, a heat exchanger and a humidifier are equipped.

It is particularly advantageous if the coarse filter is the electrostatic one Fine filter with Cu filter body, the fan, a heat exchanger and a humidifier designed as a sliding installation kit and are inserted one behind the other in the order mentioned in the air flow in a shaft-like convector housing.

This creates a device with a compact design in which

7506026 03/11/76

for maintenance or for replacing defective components Device inserts only have to be pulled out or pushed in. In addition, "the maintenance is essentially limited Periodic cleaning of the filter, because all other devices are through the previous fine filtration the intake air is largely protected from contamination.

In the drawing, a fan coil unit for space heating and air conditioning is shown schematically as an embodiment of the invention shown.

The convector has a housing 10, in the interior of which frames formed from rails 11 are fastened as a support for sliding installation kits and the front plate 12 of which is removable. A fan 13 sucks in air from below, which is roughly cleaned by a first filter 14 and finely filtered by an electrostatic filter 15 arranged above it, before it reaches the fan 13. A heat exchanger 16 is arranged above the fan, on which the air is heated or cooled as required. The heat exchanger 16 is provided with connecting pieces 16 ' for connection to the line system, a central heating system. Finally, the air flow leads past an air humidifier 17 into the room to be heated or air-conditioned.

A wall 18 separates a space 19 for a Hochspannungsenlege 20 from the duct and also serves as a carrier of connectors 21 and 22 for the electrical connection of the blower 13 and the ElektrostatfHtGi- ¹ S I5. A filter mat 23 made of activated carbon is provided above the ozone-forming high-voltage part of the electrostatic filter 15, which limits the ozone concentration of the air exiting the high-voltage part of the filter to a value, for example 0.2 mg / m *, which is α even when the fan is constantly running. permanent presence of people in the room

7506026 03/11/76. .

is not harmful to health.

The humidifier 17 can via a pipe connection 24 with a Water supply to be connected. For cooling operation in summer no additional air humidification is necessary. The pipe connection 24 and the connecting piece 16 'of the heat exchanger and the plug connection of the high-voltage system 20 protrude from the device housing on the rear of the device.

To maintain the device, the front panel 12 is removed, after which the filters 14 and 15 are pulled out and cleaned or individual parts of the filter, such as the filter mat 23> can be exchanged. If one of the other functional kits is to be exchanged, it will also be removed, in the case of the heat exchanger 16 or the air humidifier 17, the back connections must be released beforehand.

7506026 03/11/76

Claims (3)

II ·· I I UM nil ι I Il · Il ItII 1 ^ 'Ki / Kö J. New claims 1. Device for filtering air in living and working rooms, with a Fan and an electrostatic filter built in front of the fan, characterized in that between the outlet opening the electrostatic filter (15) and the inlet port of the fan (13) a filter body (23) made of a chemical with Oj reactive substance such as activated carbon is attached. 2. Gerät'nach claim 1, characterized in that the electrostatic filter (15) is designed as a fine filter and is attached to the output side of a coarse filter (I ¹ O. 3. Apparatus according to claim 2, characterized in that the coarse filter (I ¹ I), the electrostatic fine filter (15) with O ^ filter body (23), the fan (13), a heat exchanger (16) and a humidifier (17 ) are designed as thrust installation kits and are inserted one behind the other in the order mentioned in the air flow in a shaft-like convector housing (10). 7506026 03/11/76