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Back flushable air filter

An air filter, reverse flushing technology, applied in the direction of cleaning the filter device, dispersing particle filtration, chemical instruments and methods, etc., to achieve the effect of eliminating damage

Active Publication Date: 2020-06-16
VORWERK & CO INTERHOLDING GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above-mentioned air filter is that, in terms of backwashing operation, it can only function in combination with equipment having a compressor with a corresponding valve block for switching the flow direction

Method used

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  • Back flushable air filter

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] figure 1 A vacuum cleaner 1 is shown, ie a hand-held vacuum cleaner with a back-flushable air filter 2 . The backflushable air filter 2 has a cylindrical filter element 3 in which likewise cylindrical cleaning nozzles 6 with nozzle openings 7 are arranged for cleaning the filter element during backflush operation. 3 Perform a backwash. The air filter 2 has a valve part 9 with a non-return flap 13 which is open during the shown filtering operation in order to allow filtered air to reach the suction fan 16 of the vacuum cleaner 1 .

[0029] figure 2 According to figure 1 Air filter 2 with closed non-return flap 13 is shown.

[0030] image 3 Indicates that during a backflush run according to figure 1 Air filter 2 shown. In the reverse flushing mode, the non-return flap 13 is closed, wherein the valve element 9 is moved in the direction of the cleaning nozzle 6, thereby releasing the bypass air inlet 11 through which ambient air can be sucked into the air filter 2 ...

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PUM

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Abstract

The invention relates to a back-flushable air filter (2) in particular for a vacuum cleaner. The back-flushable air filter (2) is provided with a filter element (3) for separating a dust-containing air chamber (8) and a clean air chamber (4). During the filter operation, air to be cleaned flows through the filter element in the direction from the dust-containing air chamber (8) to the clean air chamber (4), wherein the clean air chamber (4) is provided with a clean air outflow zone (5). Regardless of the special design of a device employing the air filter, the provided air filter can be back flushed, and is compatible with a plurality of devices, the clean air outflow zone (5) needs to comprise a valve element (9), the valve element (9) is designed in a way that during the back-flushing process, a bypass air inlet path (10) is opened, and the filter element (3) is back flushed through ambient air, and the bypass air inlet path is arranged at the back of the clean air outflow zone in the flow direction of the filter operation. Furthermore, the invention relates to a method for operating the back-flushable air filter.

Description

technical field [0001] The invention relates to a backwashable air filter, in particular for vacuum cleaners, which has a filter element which separates a clean air chamber from a dust-laden air chamber. The filter element flows through the filter element in the direction of the dust air chamber in the direction of the clean air chamber, wherein a clean air outflow area is assigned to the clean air chamber. Background technique [0002] Back-flushable air filters of the type described above are known in the prior art. It is commonly used to clean the air containing dust and / or dirt. In terms of vacuum cleaners, it is used to protect the blower of the vacuum cleaner from being filled with dust / dirt that is sucked in. Due to the suction operation of the vacuum cleaner, the filter element is gradually filled with dust. The filter element becomes contaminated over time, so that the air filter needs to be backwashed periodically. [0003] For example, publication DE 195 17 19...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/24B01D46/42
CPCA47L9/20
Inventor M·塞尔内基
Owner VORWERK & CO INTERHOLDING GMBH