Cooling-optimised housing of a machine

Patent metadata

Field	Value
Publication number	US-12057745-B2
Application number	US-201917046670-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Apr 12, 2018
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

In a method for producing a cooling structure over a surface of a housing of a dynamo-electric rotational machine, at least one material is applied in layers by an additive manufacturing method to the surface of the housing, omitting at least one predefined region. As a result of the application of material, at least two elevations are formed, with a cooling channel being formed between the two elevations.

First claim

The invention claimed is:

1. A method for producing a cooling structure on a surface of a housing of a dynamoelectric rotary machine designed as a permanently excited synchronous machine, said method comprising:
applying a material to the surface of the housing in layers by an additive manufacturing method such as to omit at least one predefined region to thereby form at least two elevations in the shape of pins with substantially identical shapes having a circular base area that are arranged in a row and extend sequentially in a straight line aligned substantially in a direction of a machine axis of the dynamoelectric rotary machine to form a row of pins, and a cooling channel extending between the at least two elevations for passage of air as coolant.

2. The method of claim 1 , wherein the material is applied in such a way as to omit a plurality of such predefined region.

3. The method of claim 1 , wherein the additive manufacturing method is a MPA (Metal Powder Application) method.

4. The method of claim 1 , wherein the elevations are formed in such a manner that the elevations extend from a front axial end of the dynamoelectric rotary machine to a rear axial end of the dynamoelectric rotary machine.

5. The method of claim 1 , wherein the pins of two opposite rows of pins in relation to a peripheral direction are arranged in an opposing or alternating manner.

6. The method of claim 1 , further comprising forming at least one of the elevations with at least one protrusion in a peripheral direction or with at least one protrusion in a reverse peripheral direction.

7. A cooling structure on a surface of a housing of a dynamoelectric rotary machine, said cooling structure comprising:
at least two elevations in the shape of pins with substantially identical shapes having a circular base area that are arranged in a row and extend sequentially in a straight line aligned substantially in a direction of a machine axis of the dynamoelectric rotary machine to form a row of pins;
a cooling channel extending between the at least two elevations for passage of air as coolant, and
a hood surrounding the housing, wherein the hood is manufactured by an additive manufacturing method,
wherein the elevations and the cooling channel are produced by applying a material to the surface of the housing in layers by the additive manufacturing method such as to omit at least one predefined region.

8. The cooling structure of claim 7 , wherein the material is applied in such a way as to omit a plurality of such predefined region.

9. The cooling structure of claim 7 , wherein the additive manufacturing method is a MPA (Metal Powder Application) method.

10. The cooling structure of claim 7 , wherein the elevations are formed in such a manner that the elevations extend from a front axial end of the dynamoelectric rotary machine to a rear axial end of the dynamoelectric rotary machine.

11. The cooling structure of claim 7 , wherein the pins of two opposite rows of pins in relation to a peripheral direction are arranged in an opposing or alternating manner.

12. The cooling structure of claim 7 , wherein at least one of the elevations is formed with at least one protrusion in a peripheral direction or with at least one protrusion in a reverse peripheral direction.

13. A housing, comprising:
a surface;
a cooling structure including at least two elevations in the shape of pins with substantially identical shapes having a circular base area, that are arranged in a row and extend sequentially in a straight line aligned substantially in a direction of a machine axis of dynamoelectric rotary machine to form a row of pins, and a cooling channel extending between the at least two elevations for passage of air as coolant, wherein the elevations and the cooling channel are produced by applying a material to the surface of the housing in layers by an additive manufacturing method such as to omit at least one predefined region, and
a hood surrounding the housing, wherein the hood is manufactured by the additive manufacturing method.

14. A dynamoelectric rotary machine, comprising a housing as set forth in claim 13 .

Assignees

• Siemens Ag

Inventors

• Bott Erich
• Seufert Reiner
• Vollmer Rolf

Classifications

• Y10T29/49009

  Dynamoelectric machine · CPC title

• H02K5/24

  specially adapted for suppression or reduction of noise or vibrations · CPC title

• H02K5/20

  with channels or ducts for flow of cooling medium · CPC title

• H02K5/18 Primary

  with ribs or fins for improving heat transfer · CPC title

• B22F10/00

  Additive manufacturing of workpieces or articles from metallic powder (apparatus or devices therefor B22F12/00) · CPC title