Magnetic devices with integral cooling channels

Patent metadata

Field	Value
Publication number	US-9299488-B2
Application number	US-201414183700-A
Country	US
Kind code	B2
Filing date	Feb 19, 2014
Priority date	Oct 4, 2013
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A magnetic device includes an electrically insulating body and a conductor coil. The insulating body defines an internal cavity for a magnetic device core and a coolant channel routed about the internal cavity. The conductor coil extends through the insulating body and winds about the internal cavity. The electrically insulating body electrically insulates the internal cavity and coolant channel from the conductor coil.

First claim

What is claimed is:

1. A magnetic device, comprising:
an electrically insulating body defining:
an internal cavity for a magnetic device core, and
a coolant channel routed about the internal cavity;

a conductor coil extending through the insulating body; and
a cold plate coupled to the electrically insulating body and having a fluid conduit defined therein,
wherein the fluid conduit is fluidly connected to the coolant channel by a coolant inlet extending through the cold plate and the insulating body,
wherein the fluid conduit is fluidly connected to the coolant channel by a coolant outlet extending through the cold plate and the insulating body,
wherein the insulating body electrically insulates the internal cavity from the coolant channel and electrically insulates the coolant channel from the conductor coil.

2. A magnetic device as recited in claim 1 , further comprising a housing, wherein the housing is integral with the insulating body and conductor coil.

3. A magnetic device as recited in claim 2 , wherein the insulating body and housing define the coolant inlet.

4. A magnetic device as recited in claim 2 , wherein the insulating body and housing define the coolant outlet.

5. A magnetic device as recited in claim 1 , wherein the insulating body and conductor coil are integrally formed, wherein the cooling channel is integrally defined using energy from an ultrasonic transducer, a laser, an electron beam, or a cold spray technique.

6. A magnetic device as recited in claim 4 , wherein the coolant channel is a first coolant channel, wherein the insulating body defines a second coolant channel, and wherein the first and second coolant channels extend about different portions of the internal cavity.

7. A magnetic device as recited in claim 6 , wherein the insulating body defines a bridging channel fluidly connecting the first and second coolant channels in series.

8. A magnetic device as recited in claim 1 , wherein the coolant channel defines a flow structure disposed between the conductor coil and the internal cavity for thermally shielding the internal cavity from the conductor coil.

9. A magnetic device as recited in claim 1 , wherein the cavity is toroid-shaped.

10. A magnetic device as recited in claim 1 , further comprising:
a flow structure fluidly connected to the coolant channel, defined by the insulating body, and extending about the cavity of the insulating body;
an integral housing surrounding the magnetic device; and
a coolant inlet and a coolant outlet fluidly connected to the coolant channel for removing heat generated by resistive heating of the conductor coil.

11. A magnetic device as recited in claim 1 , further comprising a magnetic device core with a toroid shape, wherein the insulating body is conformally disposed about a surface of the magnetic device core.

12. A magnetic device as recited in claim 1 , further including a coolant conduit fluidly connected to the coolant inlet for supplying a coolant flow to the magnetic device and the coolant outlet for removing heat from the magnetic device.

13. A magnetic device as recited in claim 1 , wherein the electrically insulating body defining the coolant channel forms a fluid-contacting surface of the coolant channel.

14. A magnetic device, comprising:
an electrically insulating body defining:
an internal cavity with a toroid shape, and
a coolant channel routed about the internal cavity;

a toroid-shaped core seated in the internal cavity;
a conductor coil extending through the insulating body and about the toroid-shaped core;
a cold plate coupled to the electrically insulating body and having a fluid conduit defined therein,
wherein the fluid conduit is fluidly connected to the coolant channel by a coolant inlet extending through the cold plate and the insulating body,
wherein the fluid conduit is fluidly connected to the coolant channel by a coolant outlet extending through the cold plate and the insulating body,
wherein the insulating body electrically insulates the internal cavity from the coolant channel and electrically insulates the coolant channel from the conductor coil, and
wherein coolant channel is disposed between the conductor coil and the core on both radially inner and radially outer sides of the toroid-shaped core.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Shepard Charles
• Karlen Eric

Classifications

• H01F27/06

  Mounting, supporting or suspending transformers, reactors or choke coils {not being of the signal type} · CPC title

• H01F27/322

  the insulation forming channels for circulation of the fluid · CPC title

• H01F41/0206

  Manufacturing of magnetic cores by mechanical means (magnetic cores per se H01F27/24) · CPC title

• H01F27/08 Primary

  Cooling (heat-transfer elements F28F); Ventilating (structural details of casings H01F27/02) · CPC title

• H05K7/20854 Primary

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20863 takes precedence) · CPC title