DE1179338B - Diffuser for vacuum cleaner - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: A 471

German class: 34 c -5/70

Number: 1179 338

File number: A33379Ic / 34c

Filing date: November 27, 1959

Opening day: October 8, 1964

The invention relates to a diffuser for deflecting the air blown out by a vacuum cleaner. Such deflection devices are in the form of grids, baffles or nozzles at the discharge end known and used from vacuum cleaners of the horizontal design, around those that normally emerge horizontally Deflect the air flow upwards, so that the dust located on the processing surface is not whirled up if possible. This task is insufficient by the known deflection devices solved because of the sharp, upward airflow when working with the vacuum cleaner is partially reflected back down on neighboring furniture or walls and then but whirls up the dust lying on the ground.

It is also already a diffuser with an annular neck part that can be inserted into the blow-out opening has been proposed to the one with considerable dimensions longitudinally extending basket made of wire mesh or welded, soldered or riveted metal strips. This basket is filled with a soaked, coarse-fiber material such as wood, rock or glass wool, which must be replaced after it has become dirty. It is true that such a diffuser is due to The large outlet cross-section avoids a sharp, directed air flow. Besides that in itself difficult training of this diffuser entails the need to change the from time to time Fillings, however, involve unpleasant and inconvenient extra work, and stocking up on Reserve fillings require a lot of space for storage.

It is also known to provide the dust bag of the vacuum cleaner with a fine-pored built-in, Subordinate so-called bacterial filter in disc shape. But this is always so far inside the vacuum cleaner housing concentrating the air flow that it has no diffuser effect can. The built-in bacterial filter also makes it difficult to access the dust bag.

The object of the invention is to overcome the disadvantages of the previously known diffusers and deflectors turn off and insert a diffuser with an annular, into the exhaust opening of the vacuum cleaner To create insertable neck part, which is extremely cheap to manufacture, in the non-operational state Requires a minimum of space and, because of its low cost, the whole of it is renewed from time to time can be, in the meantime without a noticeable increase in the dimensions of the device Diffuser for vacuum cleaner

Applicant:
Aktiebolaget Electrolux, Stockholm

Representative:

Dipl.-Ing. E. Jourdan, patent attorney,

Frankfurt / M., Freiherr-vom-Stein-Str. 18th

Named as inventor:
Torsten Brimberg, Bandhagen,

Felix Tiidt, Sundbyberg (Sweden)

Claimed priority:

Sweden of November 28, 1958 (11 080)

Vacuum cleaner can be left. According to the invention, this object is achieved in that of the neck part several mainly radial, with one

The outer ring connected spokes run out and that the diffuser insert consists of two disc-shaped, air-permeable elements enclosing a cavity between them Diaphragms are made with their edges in a radial indentation of the outer ring are taken, wherein the membrane adjacent to the spokes one with the opening of the neck part Has matching opening and rests with the inner edge on the neck part.

Further features of the invention form the subjects of the subclaims.

The invention should continue with the aid of the exemplary embodiment shown schematically in the figures explained. It shows

Fig. 1 is a side view of the in the blow-out opening the rear section of the housing end shown inserted diffuser,

F i g. 2 an axial section through the diffuser,
F i g. 3 shows an axial partial view from the outlet side onto the support frame of the diffuser,

FIG. 4 shows a detail of FIG. 2.

The diffuser is with the neck part 1 of its funnel-shaped supporting structure, which is made of soft, elastic Material, such as polyethylene, is inserted into the exhaust opening of the vacuum cleaner housing 9, wherein the outer ring groove 2 of the neck part 1 with the edge 3 of the blow-out opening a tight fit results (Fig. 1). Put spokes 4 on the neck part 1

409 690/26

which lead to the outer ring 5. Neck, spokes and outer ring are made in one piece from polyethylene manufactured. The supporting structure can also consist of rubber and / or metal, but it is polyethylene very cheap. Against the by the outer ring 5, the memory 4 and the subsequent Edge of the neck part 1 formed basket-shaped part of the supporting structure is a circular, air-permeable, preferably microporous membrane 6, which has a central bore in alignment with the neck part 1 having. The membrane can be constructed from fiber material that is held together by binding agents is, preferably by an agent dissolving the fibers when the fibers are made of plastic.

The membrane 6 does not extend all the way to the inner edge of the indentation formed by the outer ring S, but leaves some space there to enclose a second, similar circular one above it Membrane 7, as shown in FIG. 4 can be seen, which together with the membrane 6 forms a diffuser bag, which distributes the exiting air 8 (Fig. 1) on all sides.

This diffuser bag is on the inner basket surface parts 4, 5 facing its membranes 6, 7 supported and fixed, expediently by welding when producing the supporting structure thermoplastic material or by vulcanization if the supporting structure is made of rubber, or also by gluing.

Claims (6)

Patent claims: 1. Diffuser for vacuum cleaners with an annular, into the exhaust opening of the vacuum cleaner Insertable neck part, characterized in that several of the neck part (1), mainly radial ones, with an outer ring (S) connected spokes (4) go out and that the diffuser insert consists of two between them disc-shaped, air-permeable membranes (6, 7) enclosing a cavity, which are taken with their edges in a radial indentation of the outer ring (5), wherein the membrane (6) adjacent to the spokes (4) corresponds to the opening of the neck part (1) Has opening and rests with the inner edge on the neck part (1). 2. Diffuser according to claim 1, characterized in that at least the neck part (1) made of resilient and / or elastic material such as polyethylene, rubber or the like., Is. 3. Diffuser according to claim 1 or 2, characterized by an outer ring groove (2) in the neck part (1), in which the edge (3) on the exhaust opening of the vacuum cleaner housing (9) fits. 4. Diffuser according to one of claims 1 to 3, characterized in that the spokes (4) with the surface parts of the membranes (6, 7) resting against their inner surfaces are glued. 5. Diffuser according to one of claims 1 to 3, characterized in that the thermoplastic Material existing spokes (4) are welded to the surface parts of the membranes (6, 7) resting against their inner surfaces are. 6. Diffuser according to one of claims 1 to 3, characterized in that the consisting of rubber Spokes (4) with the surface parts of the membranes resting against their inner surfaces (6, 7) are vulcanized together. Considered publications:
German utility model No. 1 710 542. 1 sheet of drawings 409 690/26 9.64 @ Bundesdruckerei Berlin