Drying layer preceding adsorptive layers in vehicle air filter - is regenerated by secondary hot air supply

Abstract

Abstract A filter for purificn. of air blown into a vehicle passenger compartment has multiple layers of chemically and catalytically adsorbent material with a separate drying layer. To regenerate this drying layer, secondary air is sucked through a valve without first passing the adsorptive layers and is electrically heated to aid drying before being extracted by a reversible fan which normally forces incoming air through the filter. Cooler air can be entrained during regeneration to prevent the fan overheating. The entire unit may have an initial dust-removing layer, e.g. felt. The regenerating air, having by-passed the adsorbent layers, cannot deposit moisture on them.

Inventors

• 👤 Ing.(grad.) Heribert 4390 Gladbeck Dewert
• 👤 Ing.(grad.) Heinz 4600 Dortmund Gresch
• 👤 Ing.(grad.) Heinz 4390 Gladbeck Hölter
• 👤 Ing.(grad.) Heinrich Igelbüscher

Bibliographic Details