Fixing and protecting arrangement for a capacitor

• US 20050007725A1
• Filed: 06/01/2004
• Published: 01/13/2005
• Est. Priority Date: 06/04/2003
• Status: Active Grant

• Current Assignee: Vacon Oy (Danfoss A/S)
• Original Assignee: Vacon Oyj (Danfoss A/S)
• Inventors: Koskinen, Timo, Miettinen, Osmo, Norrena, Juha, Palomaki, Leo
• Granted Patent: US 6,972,941 B2
• Time in Patent Office: Days
• US Class Current: 361/329
• CPC Class Codes: H01G 2/08 Cooling arrangements; Heating arrangements; Ventilating arrangements
• CPC Class Codes: H01G 4/38 Multiple capacitors, i.e. structural combinations of fixed capacitors

Abstract

The present invention relates to a fixing and protecting arrangement for a capacitor. The arrangement comprises a cooling element, one or more recesses arranged in the cooling element, and a capacitor intended to be fixed into each recess. The arrangement is characterized in that it comprises one or more recesses arranged in the cooling element, in which recess the capacitor is intended to be arranged in such a way that the lower surface of the capacitor is in contact with the cooling element for transferring heat from the capacitor to the cooling element.

Claims

1. A fixing and protecting arrangement for a capacitor, comprising:

a capacitor;

a cooling element;

a fixing member for fixing the capacitor to the cooling element;

wherein

the arrangement comprises one or more recesses arranged in the cooling element, into which recess the capacitor is intended to be arranged in such a way that the lower surface of the capacitor is in contact with the cooling element for transferring heat from the capacitor to the cooling element.

2. A fixing and protecting arrangement for a capacitor according to claim 1, wherein an adapter collar is arranged between the capacitor and the cooling element.

3. A fixing and protecting arrangement for a capacitor according to claim 1, wherein the recess is provided with a deeper portion closer to the outer periphery, to which portion the lower portion of the adapter collar is mountable, and an inner portion, to which the lower surface of the capacitor is mountable.

4. A fixing and protecting arrangement for a capacitor according to claim 1, wherein the upper portion of the adapter collar is arranged to protrude in order to support the capacitor in the direction perpendicular to the longitudinal axis of the capacitor.

5. A fixing and protecting arrangement for a capacitor according to claim 1, wherein the fixing member is a fixing plate which is arranged against the upper surface of the capacitor in order to direct forces at the capacitors in the direction of the longitudinal axis.

6. A fixing and protecting arrangement for a capacitor according to claim 5, wherein the fixing plate comprises fixing members 7a for fixing the fixing plate to the cooling element.

7. A fixing and protecting arrangement for a capacitor according to claim 5, wherein the fixing plate is provided with openings and, through which the capacitor is connectable.

8. A fixing and protecting arrangement for a capacitor according to claim 5, wherein the fixing plate is provided with one or more fixing members for directing forces at the capacitor in the direction perpendicular to the longitudinal axis of the capacitor.

9. A fixing and protecting arrangement for a capacitor according to claim 1, wherein an insulating film is arranged between the capacitor and the cooling element.

10. A fixing and protecting arrangement according to claim 1, wherein heat-conducting paste is arranged between the capacitor and the cooling element.

11. A fixing and protecting arrangement for a capacitor according to claim 2, wherein the upper portion of the adapter collar is arranged to protrude in order to support the capacitor in the direction perpendicular to the longitudinal axis of the capacitor.