Blank for a conduit arrangement

Patent metadata

Field	Value
Publication number	US-12134130-B2
Application number	US-201817056778-A
Country	US
Kind code	B2
Filing date	May 24, 2018
Priority date	May 24, 2018
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A blank for a conduit arrangement includes an annular conduit having a first end and a second end, which is formed by a channel surrounded by a wall. The conduit arrangement has an axis of rotation and the conduit extends in a circumferential direction over an angle of more than 360 degrees about the axis of rotation and forms at least one wind turn. The axis of rotation is arranged perpendicularly to a base surface, the wall having first surfaces which are arranged at a first angle of at least 30 degrees relative to the base surface or in which a surface normal forms at least one second angle of 0 to 60 degrees with respect to the base surface. First partial surfaces of the walls, which face one another in an axial direction, of adjacent turns are arranged spaced apart from one another. The blank is produced by an additive manufacturing process.

First claim

The invention claimed is:

1. A blank of a line arrangement, comprising:
an annular line which has a first end and a second end and is formed by a channel enclosed by a wall; and
a supporting structure that is formed by second areas having a weight of at least 30% by weight with respect to material forming the supporting structure;
wherein the line arrangement has an axis of rotation and the annular line extends in a circumferential direction over more than 360 degrees around the axis of rotation and forms at least two turns;
wherein the turns are arranged adjacent to one another in an axial direction, and wherein the axis of rotation is arranged perpendicular to a base area;
wherein the channel has a throughflow cross section and at least one of the turns forms the channel and has a cross section that encompasses the throughflow cross section, and the cross section has a height between a lower boundary and an upper boundary in the axial direction;
wherein, starting from the lower boundary and up to at least 30% of the height, the wall exclusively includes first areas (a) that are arranged at a first angle of at least 30 degrees with respect to the base area, or (b) in which a surface normal forms at least a second angle of from 0 to 60 degrees with respect to the base area;
wherein first sub-areas of the walls of adjacently arranged turns face one another in the axial direction and are arranged spaced apart from one another;
wherein the blank is produced by an additive manufacturing process;
wherein the line arrangement is used as an electrical inductor through which a coolant can flow via the channel; and
wherein the second areas are arranged (a) at an angle of at least 30 degrees with respect to the base area, or (b) such that a surface normal forms at least a second angle of from 0 to 60 degrees with respect to the base area.

2. The blank of claim 1 , wherein, starting from the wall, the supporting structure extends in a radial direction one of inside or outside the at least one turn.

3. The blank of claim 1 , wherein the supporting structure has a weight of at most 30% by weight with respect to material forming the blank.

4. The blank of claim 1 , wherein the supporting structure comprises a web that extends inwardly or outwardly from the wall of the at least one turn at least in a radial direction and encircles the wall in the circumferential direction; wherein webs of individual turns are attached to a supporting wall which is arranged inside or outside the at least one turn and extends from the base area in the axial direction.

5. The blank of claim 1 , wherein the supporting structure comprises a connecting wall which encircles the wall in the circumferential direction and connects the walls of turns which are arranged adjacent to one another to one another.

6. The blank of claim 1 , wherein, in the axial direction, the blank has a first end face and an oppositely arranged second end face; wherein the first end and the second end are arranged on the second end face; wherein, starting from the first end, the channel extends at least partially in the axial direction as far as the first end face and forms a first turn at the first end face.

7. The blank of claim 1 , wherein the throughflow cross section has a largest width, wherein the largest width is at least eight millimeters.

8. The blank of claim 1 , wherein the two turns respectively have cross sections which are arranged adjacent to one another in the axial direction, wherein the two cross sections are different from one another.

9. The blank of claim 1 , wherein first sub-areas of adjacently arranged turns that face one another in an axial direction are arranged spaced apart from one another, and individual turns are connected exclusively via the wall.

Assignees

• Gkn Driveline Int Gmbh

Inventors

• Cremerius Rolf
• Weckerling Thomas
• Aydin Ümit
• Ermakova Galina

Classifications

• B22F10/20

  Direct sintering or melting · CPC title

• H01F41/04

  for manufacturing coils {(coils for transformer or inductances H01F27/28)} · CPC title

• H01F27/2876

  Cooling (cooling transformers and inductances in general H01F27/08) · CPC title

• B33Y40/20

  Post-treatment, e.g. curing, coating or polishing · CPC title

• B33Y80/00 Primary

  Products made by additive manufacturing · CPC title