Electric switch provided with an arc-blasting unit
AssigneeGeneral Electric Technology GmbH
InventorsThomas Sikorski, Boris Nechal, Robert Luescher
Life of this patent
Estimating the term…
Abstract
Embodiments of the disclosure relate to an electric switching unit provided with an arc-blasting unit. In one embodiment, an electric switch can be provided. This electric switch can include an arc-blasting unit with a compression cylinder enclosing a compression chamber mobile together with the mobile contacts, and a stationary piston at an end of the compression chamber, provided with a support rod made up as a blowpipe which channels the gas compressed in the chamber when the contacts separate to a nozzle that directs the flow to a separation place of the contacts so as to efficiently blast electric arcs. The arrangement can be relatively lightweight and can occupy relatively little space.
Claims13
An electric switch comprising:
- at least one fixed contact;
- at least one mobile contact sliding in front of the fixed contact in a movement direction between a closed position at which the at least one mobile contact is joined with the fixed contact, and an open position at which the at least one mobile contact is separated from the fixed contact;
- at least one blowpipe adjacent to the at least one fixed contact and extending on only one side of and at a short distance above the at least one mobile contact and parallel to the movement direction, the at least one blowpipe comprising a nozzle at a front end, the nozzle being directed towards a place at which the at least one mobile contact separates from the at least one fixed contact and being arranged to blow an arc in only one direction substantially perpendicular to the arc, and a piston at a rear end;
- and
- a mobile enclosure connected to the at least one mobile contact and sliding around the at least one blowpipe and around the piston, a compression chamber, which communicates with the nozzle, being defined by the mobile enclosure, the piston and the at least one blowpipe.
Dependencies are inferred from the claim text.