Patent ID: 7893379

Claim:
An electrical switching device for an electrical power supply system, comprising: a switching chamber which is surrounded by a switching chamber enclosure and has a central axis, a first contact, a second contact, and a body with outlet openings for switching gas to flow through being provided in an exhaust area of the first or second contact, with the exhaust area being subdivided by the body into an inner volume and an outer volume, and a baffle wall for cooling the switching gas being provided in the outer volume, wherein the outlet openings of the body are configured to produce a plurality of directed gas jets directed towards the baffle wall, and are configured to produce a plurality of vortices for providing a convective heat transfer from the switching gas to the baffle wall, wherein a) the baffle wall is attached as a heat sink to a section of the switching chamber enclosure, and b) the baffle wall is thermally conductively connected to the switching chamber enclosure, wherein the outlet openings of the body are nozzles which predetermine a desired jet characteristic and/or alignment for the gas jets by virtue of their arrangement, shape and/or alignment, and wherein: c) the nozzles are tapered in the form of a funnel in the radial flow direction of the switching gas, and/or d) nozzles are provided, which are directed with respect to one another such that the trajectories of the associated gas jets will cross one another before reaching the baffle wall and form vortices before reaching the baffle wall.