Frequency converter with fan cooling

Details Frequency converter with fan cooling Frequency converter with fan cooling

2008-03-18

2008-03-18

Enad, Elvin (Department: 2832)

Inductor devices

With temperature modifier

Heat exchanging surfaces

C310S06000A

Reexamination Certificate

active

07345561

ABSTRACT:
The invention relates to an air-cooled frequency converter, especially for construction site equipment, such as internal and external vibrators which are operated at a higher frequency than the existing electricity supply, said frequency converter comprising a housing and preferably being connected to a separation transformer for producing a protective extra-low voltage. Said housing is divided into two sections, that is into a converter receiving element surrounding a plate chamber, and a housing section connected to said receiving element and used as a cooling region, inside which cooling air channels and a fan for conveying the cooling air through the cooling air channels are arranged. The configuration of the housing in the cooling region and optionally the embodiment of a transformer chamber are created by annular profiled elements which are cross-cut as desired, surround each other in an interspaced manner, and are coaxially arranged in relation to each other.

REFERENCES:
patent: 5019737 (1991-05-01), Bruno
patent: 5170336 (1992-12-01), Getter et al.
patent: 6169345 (2001-01-01), Bloch et al.
patent: 6441353 (2002-08-01), Gehrmann et al.
patent: 199 00 348 (2000-07-01), None
patent: 0 854 565 (1998-07-01), None

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