Patent · US Expired

Method for dehumidifying air and air dehumidifier for oil-insulated transformers, reactance coils and step switches

US7468091B2 · kind B2 · utility

0Cited by

6References

4Claims

0Family size

Assignee

MASCHINENFABRIK REINHAUSEN GMBH · DE

Inventors

Karsten Viereck · Teisendorf, DE
Dieter Dohnal · Lappersdorf, DE
Ansgar Hinz · Leichlingen, DE
Reiner Brill · Nidda, DE

Key dates

Filing date	Dec 3, 2004
Grant date	Dec 23, 2008
Priority date	—
Expiry date	Feb 6, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01F27/321
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method for dehumidifying air and to an air dehumidifier. To this end, a filter element is provided that is filled with granular material that can be regenerated by baking out. For effecting this baking out, a heating device is provided that is only actuated when both a humidity sensor indicates that a humidity limit value has been exceeded as well as a relative pressure sensor or a comparable technical means indicates that, at the moment, no flow toward the oil expansion tank is recorded.

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