Multiple-pump device

Patent metadata

Field	Value
Publication number	US-12276281-B2
Application number	US-202217966097-A
Country	US
Kind code	B2
Filing date	Oct 14, 2022
Priority date	Oct 15, 2021
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

A multiple-pump device for a vehicle may include a housing. The housing may include at least a first drive device for driving a first drive shaft with a first impeller, and a second drive device for driving a second drive shaft with a second impeller. The multiple-pump device may include a bearing shield penetrated by the first drive shaft and the second drive shaft. The beating shield may separate a wet region with the first impeller and the second impeller from a dry region with the first drive device and the second drive device. The multiple-pump device may include power electronics arranged in the dry region and connected with the bearing shield to transfer heat.

First claim

The invention claimed is:

1. A multiple-pump device, comprising
a housing, the housing including at least a first drive device for driving a first drive shaft with a first impeller and a second drive device for driving a second drive shaft with a second impeller;
a bearing shield, the bearing shield penetrated by the first drive shaft and the second drive shaft and separating a wet region with the first impeller and the second impeller, and a dry region with the first drive device and the second drive device;
power electronics arranged in the dry region and connected with the bearing shield to transfer heat;
a spiral housing;
wherein at least one drive device of the first drive device and the second drive device includes an electric motor having a rotor and a stator;
the stator includes at least one holding contour projecting axially from the stator, via which the power electronics are secured;
wherein the housing is connected to the spiral housing via a seal; and
wherein the spiral housing includes a first spiral channel corresponding to the first impeller and a second spiral channel corresponding to the second impeller.

2. The multiple-pump device according to claim 1 , wherein the at least one holding contour extends axially from the stator to the power electronics.

3. The multiple-pump device according to claim 1 , wherein:
the stator preloads the power electronics against the bearing shield via the at least one holding contour.

4. The multiple-pump device according to claim 1 , wherein:
the at least one holding contour of the stator engages through an associated opening of a printed circuit board of the power electronics in a positive-locking manner.

5. The multiple-pump device according to claim 4 , wherein:
the at least one holding contour of the stator is at least one of glued and heat-staked to the printed circuit board.

6. The multiple-pump device according to claim 1 , wherein:
the stator includes a laminated core over-moulded with plastic, and the at least one holding contour is formed by a plastic over-moulding of the laminated core.

7. The multiple-pump device according to claim 1 , wherein:
the bearing shield includes at least one positioning contour and the power electronics includes at least one counter-positioning contour, the at least one positioning contour and the at least one counter-positioning contour formed complementarily thereto, together forming a poka-yoke system.

8. The multiple-pump device according to claim 1 , wherein:
the power electronics control at least the first drive device and the second drive device.

9. The multiple-pump device according to claim 1 , wherein:
the first impeller and the second impeller in the wet region are fluidically separated from one another.

10. The multiple-pump device according to claim 1 , wherein:
the bearing shield is aluminium at least in regions.

11. The multiple-pump device according to claim 1 , wherein:
at least one of the housing and the spiral housing are at least partially plastic.

12. The multiple-pump device according to claim 1 , wherein at least one of:
the bearing shield and the spiral housing delimit the wet region; and
the bearing shield in the region of at least one of the first impeller and the second impeller includes a recess, in which the associated impeller of the at least one first impeller and second impeller is at least partially arranged.

13. The multiple-pump device according to claim 1 , wherein:
at least one of the first impeller and the second impeller includes an opening; and
at least one of the first drive shaft and the second drive shaft is hollow and is fluidically connected with the wet region via the associated opening of the at least one first impeller and the second impeller.

14. A motor vehicle comprising a multiple-pump device, the multiple-pump device including:
a housing including at least a first drive device for driving a first drive shaft with a first impeller, and a second drive device for driving a second drive shaft with a second impeller;
a bearing shield penetrated by the first drive shaft and the second drive shaft, the bearing shield separating a wet region with the first impeller and the second impeller, from a dry region with the first drive device and the second drive devices;
power electronics arranged in the dry region and connected to the bearing shield;
a spiral housing;
wherein at least one drive device of the first drive device and the second drive device includes an electric motor having a rotor and a stator;
the stator includes at least one holding contour projecting axially from the stator, via which the power electronics are secured;
wherein the housing is connected to the spiral housing via a seal; and
wherein the spiral housing includes a first spiral channel corresponding to the first impeller and a second spiral channel corresponding to the second impeller.

15. A multiple-pump device, comprising:
a housing including a first drive device and a second drive device, the first drive device for driving a first drive shaft with a first impeller, and the second drive device for driving a second drive shaft with a second impeller;
a bearing shield separating the housing into a wet region and a dry region, the wet region including the first impeller and the second impeller, and the dry region including the first drive device and the second drive device;
power electronics for controlling the first drive device and the second drive device, the power electronics arranged in the dry region and connected to the bearing shield;
a spiral housing;
wherein at least one drive device of the first drive device and the second drive device includes an electric motor having a rotor and a stator;
wherein the stator includes at least one holding contour, via which the power electronics are secured, and wherein the at least one holding contour extends from the stator to the power electronics;
wherein the housing is connected to the spiral housing via a seal; and
wherein the spiral housing includes a first spiral channel corresponding to the first impeller and a second spiral channel corresponding to the second impeller.

16. The multiple-pump device of claim 15 , wherein:
the spiral housing includes a first inlet and a second inlet for delivering a fluid to the wet region and a first outlet and a second outlet for discharge the fluid.

17. The multiple-pump device of claim 16 , wherein:
the fluid flows in the wet region of the housing, the power electronics are connected to the bearing shield in the dry region, and the fluid cools the power electronics via the bearing shield.

18. The multiple-pump device of claim 15 , wherein:
the power electronics are connected to at least one of the first drive device and the second drive device via the at least one holding contour.

19. The multiple-pump device of claim 15 , wherein:
the at least one holding contour preloads the power electronics against the bearing shield, forming a flat and heat-transferring contact with the bearing shield.

Assignees

• Mahle Int Gmbh

Inventors

• Badt Maron
• Blazic Vojko
• Cigoj Ales
• Makarow Eugen
• Spies Alexander
• Weimann Benjamin

Classifications

• F04D25/16

  Combinations of two or more pumps {; Producing two or more separate gas flows} · CPC title

• F04D13/025

  Details of the can separating the pump and drive area · CPC title

• F04D29/588

  cooling or heating the machine (F04D29/5886, F04D29/5893 take precedence) · CPC title

• F04D13/0606

  Canned motor pumps · CPC title

• F04D13/026

  Details of the bearings · CPC title