Electric drive motor

Patent metadata

Field	Value
Publication number	US-9712017-B2
Application number	US-201214367529-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Dec 23, 2011
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An electric drive motor ( 4 ), in particular for a pump assembly, has a terminal box ( 8 ) arranged on the electric drive motor ( 4 ). The terminal box ( 8 ) includes a first section ( 10 ) arranged at an axial end ( 6 ) of the drive motor ( 4 ) and a second section ( 14 ) arranged radially to the first section ( 10 ). The second section ( 14 ) is radially spaced from the first section ( 10 ) and in the tangential direction has a width (b) which is larger than a diameter (d) of the first section in this direction. The second section ( 14 ) is connected to the first section ( 10 ) via a connection section ( 16 ) having two side walls which are away for one another. These two side walls extend from the second section ( 14 ) to the first section ( 10 ) and are angled to one another, such that they approach one another towards the first section ( 10 ).

First claim

The invention claimed is:

1. An electric drive motor having a terminal box arranged on the electric drive motor, the terminal box comprising:
a first section arranged at an axial end of the drive motor and a second section arranged radially to the first section, the second section being radially spaced from the first section, positioned entirely outside a radical extent of the electric drive motor and having a width (b) in a tangential direction which is larger than a diameter (d) of the first section in this direction, and
the second section being connected to the first section via a connection section having two side walls spaced from one another, extending from the second section to the first section, and angled to one another in a manner, such that the two side walls approach one another towards the first section.

2. The electric drive motor according to claim 1 , wherein the first section, the second section, and the connection section are situated on the axial end the drive motor.

3. The electric drive motor according to claim 1 , wherein the first section, the second section, and the connection section define a common interior of the terminal box.

4. The electric drive motor according to claim 1 , wherein the first section has a same peripheral contour as the axial end of the drive motor or a larger peripheral contour which is parallel to the peripheral contour of the axial end.

5. The electric drive motor according to claim 1 , wherein the first section has a cylindrical basic shape.

6. The electric drive motor of claim 5 , wherein the first section is circularly cylindrical.

7. The electric drive motor according to claim 1 , wherein the second section has a prismatic basic shape.

8. The electric drive motor of claim 7 , wherein the second section is cuboid-shaped.

9. The electric drive motor according to claim 1 , wherein the two side walls spaced from one another, respectively departing from a side edge of the second section, extend in a manner tangentially adjacent the first section.

10. The electric drive motor according to claim 1 , wherein the terminal box further comprises a third section which is an axial extension of the second section and is situated radially spaced from the drive motor in a peripheral region of the drive motor.

11. The electric drive motor according to claim 10 , further comprising a free space between an outer periphery of the electric drive motor and the third section of the terminal box, and the free space in at least one predefined installed position of the drive motor extends in a vertical direction.

12. The electric drive motor according to claim 10 , further comprising a free space between an outer periphery of the drive motor and the third section of the terminal box, and cooling elements situated in the free space and arranged on the drive motor and/or on the terminal box.

13. The electric drive motor according to claim 1 , wherein the terminal box further comprises a fourth section radially adjacent the first section and at side of terminal box away from the second section.

14. The electric drive motor of claim 13 , wherein the fourth section forms a radial extension of the connection section.

15. The electric drive motor according to claim 1 , wherein at least two of the sections of the terminal box are designed as one piece.

16. The electric drive motor according to claim 1 , wherein the terminal box is manufactured of plastic.

17. The electric drive motor according to claim 1 , wherein the walls of the sections of the terminal box which are adjacent to one another merge into one another in a rounded manner without sharp edges.

18. The electric drive motor according to claim 1 , wherein the first section, the second section, and the connection section at their axial ends away from the drive motor are closed by a common cover.

19. The electric drive motor according to claim 18 , wherein operating elements and/or display elements are arranged on the cover.

20. A pump assembly comprising an electric drive motor according to claim.

21. The pump assembly according to claim 20 , comprising a circulation pump assembly designed as a wet-running drive motor.

Assignees

• Grundfos Holding As

Inventors

• Sofussen Morten

Classifications

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/225 Primary

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

• F04D13/0686

  Mechanical details of the pump control unit (pump control F04D15/00) · CPC title