DE8320697U1 - FILTER CARTRIDGE FOR HAND VACUUM CLEANERS - Google Patents

Abstract

1. External filter cassette, which accommodates a paper filter bag, for hand suction cleaners, characterized in that the filter cassette (3) consists of a housing (5) made of tufted material which is permeable to air without additional support elements.

Description

& Co. Interholding •
•
• · · •.,:. : J: ·::. :
.. · · .. *: · - GmbH. Vorwerk -1-

Filter cassette for hand vacuum cleaner

The hiring concerns a filter cassette for handheld vacuum cleaners, which holds a paper filter bag.
5

Filter cartridges are either in the form of stable air-impermeable Housings known on the market or as mesh baskets covered with fabric.

Both have different disadvantages depending on their structure.

The solid housings are made of plastic and are therefore impermeable to air. However, since the in the, arranged in the housing paper filter bag Incoming air must also be discharged again, the fixed housing must be provided with openings. These are then additionally with covered with a filtering medium in order to stop the so-called fine dust, which may not be captured by the paper filter bag.

This makes the production of such filter cassettes more expensive and one can only use a small part of the fixed housing as an exhaust air surface, otherwise the case will become unstable.

Almost all of the mesh baskets covered with fabric are To use the surface as an exhaust air opening, but there are no other things Disadvantage.

When the air is blown into the paper filter bag, it expands and presses the mesh basket against the fabric. Since movements occur when working with the vacuum cleaner, the bars of the wire basket can over time the fabric will rub through. In addition, the bridges paint themselves over time, also due to the accumulation of dust on the fabric, which leads to unsightly appearance.

The task of the innovation is now to create a filter cassette which does not require additional support elements and nevertheless has the entire surface as an exhaust air filter surface ζ · χ like a fabric-related filter cassette.

07/18/1983

Vorwerk S Co. Interfolding GmbH.

-Z-

The object is achieved by the features of claim 1, whereby, depending on the area of application and application, the The thickness of the individual sides of the filter cassette can be varied.

An exemplary embodiment of the innovation is drawn and described below.
It shows:

Fig. 1: The schematic diagram of a handheld vacuum cleaner with an external Filter cassette,

2 shows the basic sketch of a filter cassette,

3 shows a partial section of a filter cartridge.

Figure 1 shows a handheld vacuum cleaner 1, which consists of a motor head 2, an external filter cassette 3 and a guide handle 4.

The filter cassette 3 according to FIG. 2 essentially consists of an outer housing 5 and a frame 6 on which the filter cartridge 3 is connected to the motor head 2 of the vacuum cleaner 1 according to FIG. The exact structure is shown in FIG.

The frame 6 has two functions. He carries the housing 5 and a removable one Lid 7. The housing 5 is made of air-permeable needle-punched nonwoven fabric, which can e.g. be deep-drawable. Such substances are known on the market, for example, under the brand name "Paradur". Since these needle nonwovens are stiff and self-supporting, unnecessary a support housing or support elements. Still, the case is open the entire surface is permeable to filtering air.

07/18/1983

Vorwerk S Co. Interholding GmbH.

Furthermore, the frame 6 carries a cover 7 which is arranged detachably from the frame 6.

This cover 7 has an opening 8, which the connection with the Manufactures a dust fan in the vacuum cleaner (both not shown) and, connected to it, a connector 9, which holds the replaceable paper filter bag 10 carries.

Such a filter cartridge 3 can be made by using needle punched nonwoven fabric can be produced easily and cheaply. It can even be washed without the lid 7 and the paper filter bag 10. The use of needle punch as a housing without additional support elements is a matter of course not only limited to the form shown.

• ΛΝ & -ΪΌ30-434 July 18, 1983

Claims (1)

• · · r Vorwerk & Co. Interholding GmbH. -1- protection claims 1. External filter cassette for handheld vacuum cleaners, which have a Pa-5 Holds a piercing filter bag, characterized in that the filter cassette (3) consists of a housing (5) made of air-permeable needle-punched nonwoven fabric without additional support elements. 2c outer filter cassette according to claim 1, characterized in that the side parts of the housing (5) are designed to be different in thickness from the rest of the housing. Ϊ 15 20th 25th 30th 35 "" ANR ¹ I 030 '434' 07/18/1983