Patent · US Expired

Extraction hood and method for the suction extraction and/or purification of contaminated carrier substances

US8267756B2 · kind B2 · utility

3Cited by

12References

28Claims

0Family size

Assignee

BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

Jochen Klemm · Sandhausen, DE
Gert Meinhardt · Gondelsheim, DE

Key dates

Filing date	Aug 27, 2004
Grant date	Sep 18, 2012
Priority date	—
Expiry date	Sep 17, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB08B15/02
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An extractor hood is used for extracting and/or purifying a carrier that is contaminated with solid and/or liquid substances. In order to improve the extraction and/or purification output of an extractor hood and simultaneously to reduce the amount of maintenance required, the extractor hood uses a pre-filtering unit disposed upstream of the filter unit, whereby at least already a partial flow of the carrier to be extracted and/or to be purified is purified to a certain degree already before it reaches the filter unit that is configured as the main filter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.