Stator Core Comprising a Flow-Path Barrier

Patent metadata

Field	Value
Publication number	US-2016308407-A1
Application number	US-201415101629-A
Country	US
Kind code	A1
Filing date	Dec 1, 2014
Priority date	Dec 4, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A stator core for use in an electromagnetic machine is disclosed. The stator core contains at least one first lamination and one second lamination each of which has an annular element with a central point, an inner side, an outer side, and at least one pole element which is positioned on the inner side of the annular element and extends in a radial direction to the central point of the annular element. The pole element includes a pole tooth that has a first pole tooth end, a second pole tooth end, an upper side, a first lower side, and a second lower side. The pole tooth contains at least one flow barrier element.

First claim

1 .- 7 . (canceled)

8 . A stator core for use in an electromagnetic machine, comprising:
a first lamination and a second lamination, wherein the first lamination and the second lamination are arranged in a row next to one another; wherein each of the first lamination and the second lamination has:
an annular element with a central point, an inner side, and an outer side; and
a pole element disposed on the inner side and extending in a radial direction to the central point, wherein the pole element includes a pole tooth that has a first pole tooth end, a second pole tooth end, an upper side, a first lower side, a second lower side, and a flow barrier element.

9 . The stator core according to claim 8 , wherein the flow barrier element is disposed on the first pole tooth end and/or on the second pole tooth end.

10 . The stator core according to claim 8 , wherein the flow barrier element is a first projection protruding from the pole tooth and a second projection protruding from the pole tooth.

11 . The stator core according to claim 10 , wherein the first projection is larger than the second projection.

12 . The stator core according to claim 8 , wherein the respective flow barrier element of the first lamination is located at a first position on the respective pole tooth and wherein the respective flow barrier element of the second lamination is located at a second position on the respective pole tooth.

13 . The stator core according to claim 12 , wherein the first position is offset with respect to the second position.

14 . A lamination for use in a stator core, comprising:
an annular element with a central point, an inner side, and an outer side; and a pole element disposed on the inner side and extending in a radial direction to the central point, wherein the pole element includes a pole tooth that has a first pole tooth end, a second pole tooth end, an upper side, a first lower side, a second lower side, and a flow barrier element.

15 . The lamination according to claim 14 , wherein the flow barrier element is disposed on the first pole tooth end and/or on the second pole tooth end.

16 . The lamination according to claim 14 , wherein the flow barrier element is a first projection protruding from the pole tooth and a second projection protruding from the pole tooth.

17 . The lamination according to claim 16 , wherein the first projection is larger than the second projection.

Assignees

• Hilti Ag

Inventors

• Mahler Thomas

Classifications

• H02K3/345

  between conductor and core, e.g. slot insulation · CPC title

• H02K15/022

  with salient poles · CPC title

• H02K1/165 Primary

  Shape, form or location of the slots · CPC title

• H02K1/146 Primary

  consisting of a generally annular yoke with salient poles · CPC title

• H02K3/325

  for windings on salient poles, such as claw-shaped poles · CPC title