Filtering device, in particular for the air to be supplied to a fuel cell

Patent metadata

Field	Value
Publication number	US-10164280-B2
Application number	US-201715687878-A
Country	US
Kind code	B2
Filing date	Aug 28, 2017
Priority date	Jul 12, 2012
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A filtering device features a carrier medium and activated carbon stratum as adsorbent and having a sealing closing over or sealing longitudinal and width sides of the activated carbon stratum all-around a periphery of the activated carbon stratum.

First claim

We claim:

1. A filtering device for the air to be supplied to a fuel cell or for filtering pesticides, comprising:
a first carrier medium;
an activated carbon stratum as adsorbent arranged on and abutting the first carrier medium;
an adhesive immobilizing individual particles of the activated carbon stratum together;
wherein the adhesive bonds the activated carbon stratum onto a first face of the first carrier medium;
a sealing closing over or seals longitudinal and width sides of the activated carbon stratum all-around a periphery of the activated carbon stratum, the sealing arranged at the longitudinal and width sides of the activated carbon stratum;
wherein the sealing fixes the activated carbon stratum to the first carrier medium, improving safety against delamination and displacement of the activated carbon stratum from the first carrier medium;
a second activated carbon stratum abutting directly on and overlaying the activated carbon stratum;
an adhesive immobilizing individual particles of the second activated carbon stratum together;
a second sealing closing over or seals longitudinal and width sides of the second activated carbon stratum all-around a periphery of the activated carbon stratum;
wherein the second activated carbon stratum is not bonded to or glued to the activated carbon stratum.

2. The filtering device according to claim 1 , wherein
the first carrier medium is a filter fleece operable to remove particulates from air flowing therethrough;
wherein the first filter fleece consists of any of: polyester, polypropylene, polyacrylonitrile or polycarbonate.

3. The filtering device according to claim 1 , wherein
the adhesive is a reactive adhesive on the basis of polyurethane or silane.

4. The filtering device according to claim 1 , wherein
wherein the adhesive is a thermoplastic adhesive manufactured on the basis of polyolefins.

5. A filtering device for the air to be supplied to a fuel cell or for filtering pesticides, comprising:
a first carrier medium;
an activated carbon stratum as adsorbent arranged on and abutting the first carrier medium;
an adhesive immobilizing individual particles of the activated carbon stratum together;
wherein the adhesive bonds the activated carbon stratum onto a first face of the first carrier medium;
a sealing closing over or seals longitudinal and width sides of the activated carbon stratum all-around a periphery of the activated carbon stratum, the sealing arranged at the longitudinal and width sides of the activated carbon stratum;
wherein the sealing fixes the activated carbon stratum to the first carrier medium, improving safety against delamination and displacement of the activated carbon stratum from the first carrier medium;
the filtering device further comprising:
a second carrier medium having a first face;
wherein the activated carbon stratum is arranged on a first face of the first carrier medium;
wherein the first and second carrier medium are spaced apart on opposing sides of the activated carbon stratum;
wherein the activated carbon stratum is not bonded to or glued to the second carrier medium;
wherein the activated carbon stratum is arranged on and abutting directly onto the first face of the second carrier medium;
wherein an opposing second face of the first or second carrier medium does not have an activated carbon stratum secured thereto.

6. The filtering device according to claim 5 , wherein
the first carrier medium or the second carrier medium is a filter fleece operable to remove particulates from air flowing therethrough;
wherein the first filter fleece consists of any of: polyester, polypropylene, polyacrylonitrile or polycarbonate.

7. The filtering device according to claim 5 , wherein
the adhesive is a reactive adhesive on the basis of polyurethane or silane.

8. The filtering device according to claim 5 , wherein
wherein the adhesive is a thermoplastic adhesive manufactured on the basis of polyolefins.

Assignees

• Mann & Hummel Gmbh

Inventors

• Scope Andreas
• Volk Mathias
• Pemsel Thomas
• Woitoll Ina
• Fasold Michael
• Weiss Dieter
• Muenkel Karlheinz
• Panni Andreas

Classifications

• B01D2239/0654

  Support layers · CPC title

• B01D2253/34

  Specific shapes · CPC title

• B01D2239/0407

  comprising particulate additives, e.g. adsorbents · CPC title

• H01M8/0687 Primary

  Reactant purification by the use of membranes or filters · CPC title

• B01D53/02

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title