High current vacuum interrupter with sectional electrode and multi heat pipes

Patent metadata

Field	Value
Publication number	US-9006600-B2
Application number	US-201313918031-A
Country	US
Kind code	B2
Filing date	Jun 14, 2013
Priority date	Jun 14, 2013
Publication date	Apr 14, 2015
Grant date	Apr 14, 2015

Abstract

An electrode assembly for a circuit breaker is provided. The electrode assembly includes a conductive assembly and a heat transfer assembly. The conductive assembly includes a stem portion and a contact portion. The heat transfer assembly includes a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface. The first heat transfer surface is disposed on the conductive assembly. Each heat transfer assembly body includes a second heat transfer surface. Each heat transfer assembly body is coupled to the conductive assembly with the first heat transfer surface coupled to a number of second heat transfer surfaces.

First claim

What is claimed is:

1. An electrode assembly for a circuit breaker comprising:
a conductive assembly including a stem portion and a contact portion;
a heat transfer assembly including a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface;
said first heat transfer surface disposed on said conductive assembly;
said second heat transfer surface disposed on a number of said heat transfer assembly bodies;
each said heat transfer assembly body coupled to said conductive assembly with said first heat transfer surface coupled to said second heat transfer surface;
each said heat transfer assembly body including a stem portion and a contact portion;
wherein each said heat transfer assembly body contact portion has a generally circular cross-section;
said conductive assembly defines a generally circular heat transfer passage;
each said heat transfer assembly body contact portion corresponding to said heat transfer passage;
wherein said first heat transfer surface is disposed substantially over the surface of said heat transfer passage; and
wherein said second heat transfer surface is disposed over the surface of each said heat transfer assembly body contact portion.

2. An electrode assembly for a circuit breaker comprising:
a conductive assembly including a stem portion and a contact portion;
a heat transfer assembly including a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface;
said first heat transfer surface disposed on said conductive assembly;
said second heat transfer surface disposed on a number of said heat transfer assembly bodies;
each said heat transfer assembly body coupled to said conductive assembly with said first heat transfer surface coupled to said second heat transfer surface;
each said heat transfer assembly body including a stem portion and a contact portion;
wherein each said heat transfer assembly body contact portion has a generally circular cross-section;
said conductive assembly defines a generally semi-circular heat transfer groove;
each said heat transfer assembly body contact portion corresponding to said heat transfer groove;
wherein said first heat transfer surface is disposed over the surface of said heat transfer groove; and
wherein said second heat transfer surface is disposed over about 180 degrees of the surface of each said heat transfer assembly body contact portion.

3. An electrode assembly for a circuit breaker comprising:
a conductive assembly including a stem portion and a contact portion;
a heat transfer assembly including a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface;
said first heat transfer surface disposed on said conductive assembly;
said second heat transfer surface disposed on a number of said heat transfer assembly bodies;
each said heat transfer assembly body coupled to said conductive assembly with said first heat transfer surface coupled to said second heat transfer surface;
said conductive assembly contact portion includes a generally planar contact member and a number of coil member contact portions;
each said contact member including a first surface and a second surface;
each said contact member first surface defining a channel;
each said coil member contact portions including a first surface and a second surface;
each said coil member contact portion second surface defining a channel;
each said coil member contact portion second surface coupled to said contact member first surface with each said coil member contact portion second surface channel aligned with said contact member first surface channel whereby each said coil member contact portion second surface channel and said contact member first surface channel form a heat transfer passage;
each said heat transfer assembly body including a stem portion and a contact portion;
each said heat transfer assembly body contact portion corresponding to said heat transfer passage; and
each said heat transfer assembly body contact portion disposed in said heat transfer passage.

4. The electrode assembly of claim 3 wherein:
said conductive assembly includes a number of coil members;
each coil member including a stem portion and said coil member contact portion;
each coil member contact portion including a radial portion and a circumferential portion;
each said coil member stem portion having a first end, a second end, and a longitudinal axis; and
each said coil member radial portion and each said coil member circumferential portion disposed at an associated coil member stem portion first end and disposed in a plane that is generally perpendicular to said coil member stem portion longitudinal axis.

5. The electrode assembly of claim 4 wherein:
each coil member stem portion has an arcuate cross-sectional shape including a first lateral side and a second lateral side;
wherein said coil members are disposed about a common longitudinal axis and wherein each coil member stem portion lateral side is spaced from an adjacent coil member stem portion lateral side whereby there are a number of longitudinal gaps between said coil members; and
wherein each said heat transfer assembly body stem portion is disposed in a longitudinal gaps between said coil members.

6. The electrode assembly of claim 4 wherein:
said conductive assembly stem portion includes an end cap;
said end cap coupled to each coil member second end;
each said each said heat transfer assembly body stem portion has a first end and a second end;
each said heat transfer assembly body stem portion first end disposed adjacent a coil member stem portion first end; and
each said heat transfer assembly body stem portion second end extending through said end cap.

7. A vacuum interrupter assembly comprising:
a vacuum chamber including a sidewall and a bellows;
said vacuum chamber sidewall defining an enclosed space including a first opening and a second opening;
a bellows including a body with a first end and a second end;
said bellows body first end sealingly coupled to said vacuum chamber sidewall about said second opening;
a stationary, first electrode assembly including a stem portion and a contact portion;
said first electrode assembly stem portion sealingly coupled to said vacuum chamber sidewall at said sidewall first opening;
a movable, second electrode assembly including a stem portion and a contact portion;
said second electrode assembly stem portion sealingly coupled to said bellows second end;
at least one of said first and second electrode assemblies including:
a conductive assembly including a stem portion and a contact portion;
a heat transfer assembly including a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface;
said first heat transfer surface disposed on said conductive assembly;
said second heat transfer surface disposed on a number of said heat transfer assembly bodies;
each said heat transfer assembly body coupled to said conductive assembly with said first heat transfer surface coupled to said second heat transfer surface;

each said heat transfer assembly body including a stem portion and a contact portion;
wherein each said heat transfer assembly body contact portion has a generally circular cross-section;
said conductive assembly defines a generally circular heat transfer passage;
each said heat transfer assembly body contact portion corresponding to said heat transfer passage;
wherein said first heat transfer surface is disposed substantially over the surface of said heat transfer passage; and
wherein said second heat transfer surface is disposed over the surface of each said heat transfer assembly body contact portion.

Assignees

• Eaton Corp

Inventors

• Leusenkamp Martin
• Yu Li

Classifications

• H01H9/52 Primary

  Cooling of switch parts (cooling of contacts H01H1/62) · CPC title

• H01H2009/523

  by using heat pipes · CPC title

• H01H33/6644

  having coil-like electrical connections between contact rod and the proper contact · CPC title

• H01H2009/526

  of the high voltage switches · CPC title

• H01H33/66

  Vacuum switches · CPC title