Motor housing

Patent metadata

Field	Value
Publication number	US-9997973-B2
Application number	US-201514598620-A
Country	US
Kind code	B2
Filing date	Jan 16, 2015
Priority date	Jan 17, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

The invention relates to a motor housing for an electric motor with a stator as well as to an electric motor with a housing, whereby at least one multifunctional opening is arranged in the lower housing section and whereby electronics can be arranged in the housing, characterized in that, in order to cool the electronics, the multifunctional opening has a baffle by means of which an air flow can be directed towards the electronics, and, as an alternative, it has an offset on the side facing the upper housing section in order to mechanically connect the stator to the lower housing section.

First claim

The invention claimed is:

1. A motor housing comprising:
a lower housing section and an upper housing section configured to house an electric motor with a stator, the lower housing section having at least one multifunctional opening, the multifunctional opening comprising:
a baffle to direct an air flow towards electronics arranged in the housing to cool the electronics, and
an offset on a side facing the upper housing section to mechanically connect the stator to the lower housing section when a casting or encapsulating compound penetrates into and fills up the offset.

2. The motor housing according to claim 1 , wherein, above the stator, the lower housing section widens towards the upper housing section in the radial direction in a disk-shaped manner beyond the diameter of the stator, and the electronics can be accommodated between the lower housing section and the upper housing section, whereby a rotor with a larger inner diameter than the outer diameter of the stator can be arranged in an area around the stator in the radial direction, and whereby the multifunctional opening is oriented in the axial direction towards the area of the rotor.

3. The motor housing according to claim 1 , wherein the multifunctional opening has an essentially round geometry.

4. The motor housing according to claim 1 , wherein the multifunctional opening has an essentially angular geometry.

5. The motor housing according to claim 4 , wherein the baffle is configured symmetrically.

6. The motor housing according to claim 4 , wherein the baffle is configured asymmetrically.

7. The motor housing according to claim 6 , wherein the baffle has rectilinear side surfaces.

8. The motor housing according to claim 6 , wherein the baffle has curved side surfaces.

9. The motor housing according to claim 1 , wherein the motor housing has several multifunctional openings, whereby the lower housing section has cutouts arranged on a partial circle in order to create a mechanical connection to the stator, and the multifunctional openings are arranged on a partial circle having essentially the same diameter.

10. The motor housing according to claim 9 , wherein at least one multifunctional opening has an essentially round geometry, whereas at least another multifunctional opening has an essentially angular geometry.

11. The motor housing according to claim 1 , wherein the outer radial boundary of the lower housing section has a groove to accommodate a gasket.

12. The motor housing according to claim 1 , wherein the motor housing is made of a polymeric material.

13. An electric motor, wherein the electric motor has a motor housing according to claim 1 .

Assignees

• Mueller Rainer
• Hennegriff Matthias
• Rueckert Christian
• Ebm Papst Mulfingen Gmbh & Co Kg

Inventors

• Müller Rainer
• Hennegriff Matthias
• Rückert Christian

Classifications

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K5/22 Primary

  Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes · CPC title

• H02K5/02

  Casings or enclosures characterised by the material thereof · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• H02K9/02

  by ambient air flowing through the machine · CPC title