Patent · US Active

Device for the suction filtration of fluids

US9808749B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

HYDAC FILTERTECHNIK GMBH · DE

Inventors

Norbert Sann · Riegelsberg, DE
Viktor Lauer · Nalbach, DE
Stefan Hennes · Neunkirchen (Saar), DE
Michael Sakraschinsky · Sankt Ingbert, DE
Alexander Wohlers · Saarburg, DE
Paul F. Seibold · Bloomfield Hills, US

Key dates

Filing date	Jul 25, 2013
Grant date	Nov 7, 2017
Priority date	—
Expiry date	Feb 6, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A device for the suction filtration of fluids, such as urea solutions for exhaust gas after-treatment systems, has a tank (2) storing the fluid, and a filter element (34) arranged in the tank and provided with a filter medium (32) separating the tank contents from a clean-side inner filter cavity (20). The filter cavity extends from the bottom (10) of the tank (2) to a filling level height (28) and corresponds to a part of the filling volume of the tank (2). On the filter cavity (20), a suction connection (22) discharges the cleaned fluid by a suction pressure corresponding to a system operating pressure. The filter element (34) is provided with a filter medium (32), which is air-impermeable if suction pressures are within the range of a low system operating pressure.

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