| 摘要 |
The present invention relates to an arc extinguishing chamber for an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, at the moment they separate, form an arc between them, said arc formation chamber communicating with the inlet of a second chamber called arc extinguishing chamber, at least one separating wall placed in a volume situated downstream from said arc extinguishing chamber, said wall extending in the direction of the gas flow so as to perform partitioning of the above-mentioned volume in the direction of this flow of the gases, and at least one exhaust outlet enabling the quenching gases to be removed to the outside of the apparatus. This chamber is characterized in that the above-mentioned separating wall(s) extend(s) up to the panel of the apparatus comprising the above-mentioned exhaust outlet(s) so as to perform partitioning in the direction of the flow to these outlets and to thereby form at least a first removal duct and a second removal duct, said ducts each being associated with an exhaust outlet, and enabling a substantially complete separation to be achieved between a first flow called main flow and a second flow called secondary flow, said flows being emitted at the outlet of the arc extinguishing chamber and respectively flowing in the first duct and the second duct. |
