High temperature electromagnetic actuator

Patent metadata

Field	Value
Publication number	US-9502167-B1
Application number	US-201514945022-A
Country	US
Kind code	B1
Filing date	Nov 18, 2015
Priority date	Nov 18, 2015
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

An electromagnetic actuator includes a magnetic circuit that includes a stationary core having a first leg, a second leg and a connecting leg that connects the first and second legs, the stationary core being formed of a high temperature ferromagnetic material, and an armature formed of the high temperature ferromagnetic material. The actuator also includes one or more position returning members disposed between the stationary core and the armature and a first winding surrounding the first leg, the first winding being formed a metal wire with ceramic insulation.

First claim

The invention claimed is:

1. An electromagnetic actuator comprising:
a magnetic circuit including:
a stationary core having a first leg, a second leg and a connecting leg that connects the first and second legs, the stationary core being formed of a high temperature ferromagnetic material; and
an armature formed of the high temperature ferromagnetic material;

one or more position returning members disposed between the stationary core and the armature; and
a first winding surrounding the first leg, the first winding being formed a metal wire with ceramic insulation.

2. The electromagnetic actuator of claim 1 , wherein the high temperature ferromagnetic material is an Fe—Co—V alloy or another cobalt alloy.

3. The electromagnetic actuator of claim 1 , wherein the metal wire is formed of nickel coated copper with ceramic insulation.

4. The electromagnetic actuator of claim 1 , wherein the position returning members are planer suspension springs.

5. The electromagnetic actuator of claim 4 , wherein the planer suspension springs are formed of steel, steel alloys, stainless steels, chrome vanadium, hastelloy, inconel, phosphor bronze, or beryllium copper.

6. The electromagnetic actuator of claim 1 , wherein the position returning members are formed of steel, steel alloys, stainless steels, chrome vanadium, hastelloy, inconel, phosphor bronze, or beryllium copper.

7. The electromagnetic actuator of claim 1 , further comprising:
a second winding surrounding the second leg of the stationary core.

8. A method of forming an electromagnetic actuator comprising:
providing a magnetic circuit that includes including:
a stationary core having a first leg, a second leg and a connecting leg that connects the first and second legs, the stationary core being formed of a high temperature ferromagnetic material; and
an armature formed of the high temperature ferromagnetic material;

disposing one or more position returning members between the stationary core and the armature; and
surrounding the first leg with a first winding, the first winding being formed a metal wire with ceramic insulation.

9. A method of forming an electromagnetic actuator of claim 8 , wherein the high temperature ferromagnetic material is an Fe—Co—V alloy or another cobalt alloy.

10. A method of forming an electromagnetic actuator of claim 8 , wherein the metal wire is formed of nickel coated copper with ceramic insulation.

11. A method of forming an electromagnetic actuator of claim 8 , wherein the position returning members are planer suspension springs.

12. A method of forming an electromagnetic actuator of claim 11 , wherein the planer suspension springs are formed of steel, steel alloys, stainless steels, chrome vanadium, hastelloy, inconel, phosphor bronze, or beryllium copper.

13. A method of forming an electromagnetic actuator claim 8 , wherein the position returning members are formed of steel, steel alloys, stainless steels, chrome vanadium, hastelloy, inconel, phosphor bronze, or beryllium copper.

14. A method of forming an electromagnetic actuator claim 8 , further comprising:
a second winding surrounding the second leg of the stationary core.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Gieras Jacek F

Classifications

• H01F5/06

  Insulation of windings · CPC title

• H01F7/081 Primary

  Magnetic constructions · CPC title

• H01F7/1638

  Armatures not entering the winding · CPC title

• H01F1/147

  Alloys characterised by their composition {(treatment thereof for enhancing their electromagnetic properties C21D8/12)} · CPC title

• H01B3/12

  ceramics · CPC title