DE8321286U1 - ELECTROSTATIC AIR FILTER UNIT - Google Patents

Description

, 21. BONN 1

DIPL-INQ. KLAUS-JÜRGEN SCHWARZ i. «Z" ^AU " ^46A

GERMANY

TELEGRAMS (CABLE) BONNFA1ENT BONN

EUROPEAN PATENT OFFICE "."",",

- 3 - AKTENN «., 2 404/83

Registration ι ^{MBi 1ΟΘ 545}

ISI-Industrie-Pfo <3ukte GmbH Westerwaldstrasse 180

5202 Hennef 41

Utility model

Electrostatic air filter unit

The invention relates to an electrostatic air filter device according to the preamble of claim 1.

In known ionizers for electrostatic air filter devices, there is one serving as an ionization wire Tungsten wire between two side earth plates. The distances between the ionization wire and the parallel to it arranged hatch plates are according to the operating ■ selected the voltage of the filter device connected to a high-voltage transformer. In front of the ionizer is at a distance a so-called aluminum or wire mesh prefilter, the distance between the ionizer and the

The prefilter is chosen to be so large that ionization between the prefilter and the ground plates of the ionizer does not occur can take place, but only between the ionization wire and the parallel ground plates.

If such known ionizers, each with a tungsten wire arranged between two lateral ground plates, there is a risk that the ionization in certain zones and with certain changing air speeds in the intake air flow between the mass plates takes place only inadequately to arrange the sucked-in air parallel one behind the other in the passages between the parallel ground plates , which has brought about a somewhat better degree of efficiency »but does not represent a final solution to the problem.

The invention is based on the object, the performance and to improve the efficiency of the ionizer in such electrostatic air filter devices with simple means.

According to the invention, this object is achieved by the identification part of claim 1 solved, while in claims 2 and 3 particularly advantageous developments of the invention Marked are.

Because the ionizer is at least one immediately before and / or has filters made of a suitable electrically conductive material arranged behind the ground plates, which is connected to earth together with the earth plates on the filter housing, creates a particularly uniform ionization field achieved the sympathetic free flow opening of the ionizer.

This results in a particularly high performance and a particularly good efficiency of one with such a device Ionizer equipped electrostatic air filter device.

A preferred exemplary embodiment of the invention is shown in FIG Drawing shown schematically. Show it

1 shows an electrostatic air filter device in side view / partly in section /

2 shows a partial section through the ionizer of the filter device according to section line II-11 of FIG. 1 in one first execution fc-rm and

FIG. 3f likewise shows a partial section through the ionizer according to FIG Section line 11-11 of FIG. 1 in a second embodiment.

The electrostatic air filter device shown has a mechanical pre-filter 1, an ionizer 2 and a collector 3, which are arranged one behind the other in a housing 4 in the intake air stream 8 of a fan 5. The ionizer 2 has a number of parallel ground plates 6 each on both sides of an ionization wire arranged approximately in the middle between them 7 on.

As can be seen in detail in FIG. 2, the ionizer 2 has at least one filter 1, 1a made of a suitable electrical filter, which is arranged immediately in front of or behind the ground plates 5 conductive material, which is grounded together with the ground plates 6 on the filter housing 4. In Fig. 2 is dsbei the front the ground plates 6 arranged filters with the reference number

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Il till ·> ··> ·

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and in the case of an arrangement behind the grounding plates 6, provided with the reference numeral 1a in a dash-dotted representation.

The ionization wire 7 is both to each of the two ground plates 6 as well as the one in front of or behind it conductive filter 1, 1a each arranged at approximately the same distance 9.

This is also the case with the modified embodiment of FIG. the case, only that there in addition to a pre-filter 1 from electrically conductive material also a post-filter la made of identical material is arranged.

In all the exemplary embodiments shown, the filter 1 is 1a as a wire or knitted aluminum filter, filter cloth or as a perforated plate made of a suitable electrically conductive material such as aluminum, copper or the like.

Claims (2)

PATENT ADVERTISEMENT "·· * · '*" * ** ** 5300 BONN 1 r 2 "> · July 1983 DlPLHNG. KLAUS-JÜRGEN SCHWARZ SSE ***** *** file no. = 2 404/83 applicant: ISI-Industrie-Produkte GmbH vnRi 108 545 Westerwaldstrasse 180 Hennef 41 claims for protection 1. Electrostatic air filter device with mechanical pre-filter, Ionizer and collector in the intake air flow of a blower, whereby the ionizer has a number of parallel, ground plates on the filter housing on both sides of an ionization wire arranged approximately in the middle between them characterized in that the ionizer (2) is arranged at least one directly in front of and / or behind the ground plates (6) Filter (1, 1a) made of a suitable electrically conductive material, which together with the ground plates (6) on the filter housing (4) is grounded. 2. Electrostatic air filter device according to claim!, Characterized in that the ionization wire (7) each at approximately the same distance (9) from the lateral ground plates (6} and from each conductive one Filter Π, 1a) is arranged. Electrostatic air filter device according to claim 1 or 2, characterized in that the filter (1, 1a) is designed as a wire or aluminum knitted filter, filter cloth or as a perforated plate made of a suitable electrically conductive material such as aluminum, copper or the like . • I · 4 tt