Pseudo edge-wound winding using single pattern turn

Patent metadata

Field	Value
Publication number	US-10867741-B2
Application number	US-201815997842-A
Country	US
Kind code	B2
Filing date	Jun 5, 2018
Priority date	Feb 17, 2014
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A winding system may include a plurality of metal plates including the same shape and size, such that the plates are stacked, and each of the plurality of metal plates is reversely positioned with respect to a gap pattern in an adjacent one of the plurality of metal plates. The plates are simultaneously brazed together while flow of molten brazing material is constrained by grooves formed on brazing tabs of the plates.

First claim

We claim:

1. A method for producing a winding, comprising:
forming a plurality of metal plates, each plate having brazing tabs;
forming grooves in surfaces of the brazing tabs;
applying a brazing material to a first brazing tab of a first one of the plurality of metallic plates;
positioning a second one of the plurality of metallic plates so that a second brazing tab of the second one of the plurality of metallic plates contacts the brazing material and wherein each of the grooves of the first brazing tab of the first one of the metallic plates is opposed and offset to each of the grooves of the second brazing tab that oppositely faces the first brazing tab;
simultaneously heating the plurality of metallic plates and the brazing material; and
constraining flow of brazing material between adjacent ones of the brazing tabs using the grooves.

2. The method of claim 1 wherein the step of constraining flow of brazing material is performed by wicking excess molten brazing material into the grooves formed in the surfaces of the brazing tabs.

3. The method of claim 1 further comprising the steps of:
expanding the brazed stack of plates to separate unbrazed portions of the plates;
applying electrical insulating material to the unbrazed portions of the plates; and
pressing the expanded plates together so that insulated portions of any one of the plates is in contact with insulated portions of an adjacent one of the plates.

4. The method of claim 3 wherein the step of applying insulating material comprises anodizing the unbrazed portions.

5. The method of claim 3 wherein the step of applying insulating material comprises applying powder coating to the unbrazed portions.

Assignees

• Honeywell Int Inc

Inventors

• Chen Keming
• Ganev Evgeni
• Warr William

Classifications

• H01F27/303

  Clamping coils, windings or parts thereof together · CPC title

• H01F27/2847 Primary

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title

• H01F41/12

  Insulating of windings ({impregnating or encapsulating of transformers H01F41/005} ; of conductors in general H01B13/06) · CPC title

• Y10T29/49073

  by assembling coil and core · CPC title