公开(公告)号：JPH11329191A

公开(公告)日：1999-11-30

申请号：JP10683299

申请日：1999-04-14

Applicant: ABB RESEARCH LTD

Inventor： ZEHNDER LUKAS DR ,  KALTENEGGER KURT DR ,  NIEMEYER LUTZ DR ,  SCHOENEMANN THOMAS DR ,  SPECKHOFER GUENTER DR

IPC: H01H33/91 ,  H01H33/98 ,  H01H33/985 ,  H01H39/00

Abstract: PROBLEM TO BE SOLVED: To provide a breaker in which energy exhaust, especially pinch pressure is effectively utilized spraying gas to arc. SOLUTION: Pressure chambers 25a, 25b are placed subsequently to an arc compartment 16 divided by burning rings 32a, 32b. The pressure chambers 25a, 25b are severally connected to a heating chamber 18 concentrically surrounding the arc chamber 18, through return passages 28a, 28b having a rotation symmetry to an opening and closing axis and check valves 29a, 29b. A circumferential spraying slit 19 opened toward the arc chamber 16 from a space between the burning rings 32a, 32b is extended from the heating chamber 18. The pressure chambers 25a, 25b are connected to exhaust chambers 30a, 30b through exhaust pipes 34a, 34b. A pressure rise in the pressure chamber by a pinch pressure contributes to generation of a high spraying pressure in the heating room 18 through the return passages 28a, 28b.