公开(公告)号：US11621125B2

公开(公告)日：2023-04-04

申请号：US16605288

申请日：2018-04-13

Applicant: COMET AG

Inventor： Thierry Altenhoven ,  Walter Bigler ,  Timothy Albert Weber ,  Mark Mildner

IPC: H01G2/08 ,  H01G5/14 ,  H01G5/017 ,  H01G5/013 ,  H01G5/00

Abstract: A variable vacuum capacitor is described in which oil inside the main bellows (21) is pumped through the bellows and through the oil circuit (8) of a heat exchanger by a pump (15). Water passes through coolant channels (6) of the heat exchanger, from inlet (7) to outlet (7′). The extendable capacitor drive shaft (14) is hollow and serves as a conduit, conveying the oil to the bottom of the (bellows 21), thereby ensuring a full circulation of the oil right through the bellows and then through the heat exchanger. Pump drive means (9) may be a gerotor hydraulic motor, coupled to a gerotor oil pump (15) via magnetic coupling (22). Pumping heat transfer fluid (oil) through the bellows allows the capacitor to operate at significantly higher currents and/or lower temperatures, and significantly extends the life of the device.

公开(公告)号：US20200058441A1

公开(公告)日：2020-02-20

申请号：US16605288

申请日：2018-04-13

Applicant: COMET AG

Inventor： Thierry Altenhoven ,  Walter Bigler ,  Timothy Albert Weber ,  Mark Mildner

IPC: H01G2/08 ,  H01G5/017 ,  H01G5/14 ,  H01G5/013

Abstract: A variable vacuum capacitor is described in which oil inside the main bellows (21) is pumped through the bellows and through the oil circuit (8) of a heat exchanger by a pump (15). Water passes through coolant channels (6) of the heat exchanger, from inlet (7) to outlet (7′). The extendable capacitor drive shaft (14) is hollow and serves as a conduit, conveying the oil to the bottom of the (bellows 21), thereby ensuring a full circulation of the oil right through the bellows and then through the heat exchanger. Pump drive means (9) may be a gerotor hydraulic motor, coupled to a gerotor oil pump (15) via magnetic coupling (22). Pumping heat transfer fluid (oil) through the bellows allows the capacitor to operate at significantly higher currents and/or lower temperatures, and significantly extends the life of the device.