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Filtering device

A technology of filter device and filter area, which is applied in the fields of filtration and separation, membrane filter, dispersed particle filtration, etc., can solve the problems of insufficient diesel odor filtration and uncomfortable feeling.

Inactive Publication Date: 2006-02-22
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Diesel smell can be felt even in the case of extremely small concentration and this kind of diesel smell makes people feel extremely uncomfortable. At present, the commonly used filters and filtering devices used in the automotive industry for the input air filtration of the interior space of the car are in the filter of diesel smell still not enough

Method used

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Embodiment Construction

[0038] FIG. 1 shows the results of odor measurement of the above-mentioned particulate filter, standard filter, and combined filter (diesel engine filter) of the present invention with a diesel engine raw gas sample. The unit of odor value is GE (European odor unit) / m 3 Indicates that the units in question (European Odor Units) are as defined in DIN 13725 Section 3.3.

[0039] It can be seen that the particulate filter alone already results in a significant reduction in odor compared to the device without filter (diesel raw gas sample). This confirms the hypothesis derived from the present invention that diesel soot particles likewise act as odor carriers. There was a more significant reduction in odor with the standard filter. Optimum values ​​are achieved with the combined filter (diesel engine filter) of the present invention.

[0040] figure 2 The curves of fractional separation (expressed in %) versus particle diameter for the combined filter (diesel engine filter) of...

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Abstract

A filter system in particular for filtering the fresh air supplied to the interior of a motor vehicle is described, including at least one particle-filtering area and at least one chemical filter area, the chemical filter area including an activated carbon filter. The particle-filtering area has a filter efficiency of T (0.3 mum)>=90%, measured according to DIN 71460 / 1 @ 300 m3 / h using AC fine test dust and T (0.1 mum)>=60%, measured according to DIN 71460 @ 300 m3 / h using NaCl as the test aerosol. The filter system is characterized by an optimized separation of diesel exhaust and in particular by a definitely improved odor reduction in the case of diesel odor.

Description

technical field [0001] The invention relates to a filter device, in particular for filtering the air supplied to the interior of a motor vehicle, comprising at least one particle filter zone and at least one chemical filter zone, wherein the chemical filter zone includes an activated carbon filter. Background technique [0002] Diesel odor is well known as a characteristic "discomfort odor" in automotive filter applications, especially when filtering air entering the interior of an automobile. Diesel smell can be felt even in the case of extremely small concentration and this kind of diesel smell makes people feel extremely uncomfortable. At present, the commonly used filters and filtering devices used in the automotive industry for the input air filtration of the interior space of the car are in the filter of diesel smell is still not enough. Contents of the invention [0003] The object of the present invention is to provide a filter which is optimized for the separatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B60H3/06
CPCB01D2239/0464B01D2239/0407B01D39/2065B01D2239/1291B01D2239/1233B01D39/1623B01D2239/0618B01D2239/0241B01D2239/1241B01D39/06B01D53/92
Inventor V·布劳恩灵U·施塔尔U·费尔伯H·沙赫特R·巴德尔
Owner CARL FREUDENBERG KG
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