FIXING AND PROTECTING ARRANGEMENT FOR A CAPACITOR

• US 20060028783A1
• Filed: 10/12/2005
• Published: 02/09/2006
• 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 7,035,075 B2
• Time in Patent Office: Days
• US Class Current: 361/274.300
• 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

A fixing and protecting arrangement for a capacitor may include a cooling element, one or more recesses arranged in the cooling element, and a capacitor intended to be fixed into each recess. The capacitor may be arranged in the recess in such a way that a 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, the capacitor including a lower surface, an upper surface and a longitudinal axis;

a cooling element;

a fixing member configured to fix the capacitor to the cooling element; and

at least one recess arranged in the cooling element, into which recess the capacitor is configured to be arranged in such a way that the lower surface of the capacitor is in contact with the cooling element to transfer heat from the capacitor to the cooling element;

wherein an adapter collar is arranged between the capacitor and the cooling element.

2. A fixing and protecting arrangement for a capacitor according to claim 1, wherein the recess includes:

a deeper portion closer to an outer periphery thereof, to which a lower portion of the adapter collar is mountable, and an inner portion, to which the lower surface of the capacitor is mountable.

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

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

5. A fixing and protecting arrangement for a capacitor according to claim 4, wherein the fixing plate comprises fixing members configured to fix plate to the cooling element.

6. A fixing and protecting arrangement for a capacitor according to claim 4, wherein the fixing plate includes openings through which the capacitor is connectable.

7. A fixing and protecting arrangement for a capacitor according to claim 4, wherein the fixing plate includes at least one fixing member configured to forces at a capacitor in the direction perpendicular to the longitudinal axis of the capacitor.

8. 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.

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

10. A cooling element for receiving a capacitor, comprising:

at least one recess arranged in the cooling element, into which recess the capacitor is configured to be arranged in such a way that a lower surface of the capacitor is in contact with the cooling element to transfer heat from the capacitor to the cooling element;

wherein the recess includes;

a deeper portion closer to an outer periphery thereof, to which a lower portion of an adapter collar is mountable,

and an inner portion, to which the lower surface of the capacitor is mountable.