Pump insert and pump array comprising such a pump insert

Patent metadata

Field	Value
Publication number	US-11725653-B2
Application number	US-202117198723-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Mar 12, 2020
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A pump insert (1) for arranging in an accommodating space (104), the pump insert (1) comprising: a pump (10) comprising a pump chamber (15) and a delivery element (11) which can rotate about a rotational axis (D) and which is arranged in the pump chamber (15); an electric motor (20) comprising a rotor (21), which can rotate about the rotational axis (D), and a stator (22); and a drive shaft (30) which is mounted such that it can rotate about the rotational axis (D), wherein the rotor (21) and the delivery element (11) are connected via the drive shaft (30) in such a way that rotating the rotor (21) causes the delivery element (11) to rotate.

First claim

The invention claimed is:

1. A pump array, comprising an accommodating housing which forms an accommodating space with an end-facing wall and a circumferential wall and a pump insert, which is at least partially arranged in the accommodating space, the pump insert comprising:
a pump comprising a pump chamber and a delivery element which is rotatable about a rotational axis and which is arranged in the pump chamber;
an electric motor comprising a rotor, which is rotatable about the rotational axis, and a stator;
a drive shaft which is mounted such that it is rotatable about the rotational axis, wherein the rotor and the delivery element are connected via the drive shaft in such a way that rotating the rotor causes the delivery element to rotate; and
an inlet, which is embodied to feed fluid to the pump chamber, and/or an outlet, which is adapted to discharge fluid from the pump chamber, on the side pointing towards the end-facing wall of the accommodating space,

wherein the end-facing wall of the accommodating housing comprises a feed channel and a drainage channel; and
wherein the pump array further comprises a tubular connecting element, which is adapted to be inserted into the feed channel from the side of the accommodating space and which is inserted into the inlet and arranged between the feed channel and the inlet and connects them in fluid communication, and a tubular connecting element, which is adapted to be inserted into the drainage channel from the side of the accommodating space and which is inserted into the outlet and arranged between the drainage channel and the outlet and connects them in fluid communication.

2. The pump insert according to claim 1 , wherein the pump insert comprises an assembly structure using which the pump insert can be fastened to the accommodating housing.

3. The pump insert according to claim 2 , wherein the pump insert comprises control electronics for controlling the electric motor, wherein a thermal bridge is formed between the control electronics and the assembly structure, via which heat can be transmitted from the control electronics to the assembly structure.

4. The pump insert according to claim 3 , wherein a thermally conductive element is arranged between the control electronics and the assembly structure.

5. The pump insert according to claim 3 , wherein the control electronics are arranged at least partially on a carrier, wherein in the region of (each of) one or more components of the control electronics, a thermally conductive element is arranged between the component and the assembly structure and/or one or more thermally conductive elements are arranged between the carrier and the assembly structure.

6. The pump insert according to claim 2 , further comprising an electronics housing which is fastened to the assembly structure and in which control electronics for the electric motor are arranged, wherein the electronics housing comprises one or more hold-down elements which press a carrier, on which the control electronics are at least partially arranged, against or onto the assembly structure.

7. The pump insert according to claim 4 , wherein the assembly structure comprises at least one passage through which at least one contact element extends which electrically contacts the control electronics unit and at least one coil of the stator.

8. The pump insert according to claim 2 , wherein the drive shaft is supported on the assembly structure such that it can rotate about the rotational axis.

9. The pump insert according claim 1 , wherein the pump insert comprises a motor space outlet which connects a motor space, which is surrounded by the stator on the circumferential side, in fluid communication with the outer side of the pump insert and/or emerges onto the outer side.

10. The pump array according to claim 2 , wherein a thermal bridge is formed between the assembly structure and the accommodating housing, via which heat can be transmitted from the assembly structure to the accommodating housing.

11. The pump array according to claim 2 , wherein the assembly structure abuts the accommodating housing.

12. The pump array according to claim 2 , wherein a thermally conductive element is arranged between the assembly structure and the accommodating housing.

13. The pump array according to claim 1 , wherein
a thermal bridge formed between an assembly structure of the pump insert and the accommodating housing,
the assembly structure and
a thermal bridge formed between the assembly structure and control electronics embodied to control the motor

are adjusted to each other such that the heat generated in the control electronics while the electric motor is in operation is or can be at least mostly discharged into the accommodating housing via the thermal bridge formed between the control electronics and the assembly structure, via the assembly structure and via the thermal bridge formed between the assembly structure and the accommodating housing.

14. The pump array according claim 2 , wherein the assembly structure forms a cover which closes off the accommodating space, and/or an annular gasket which seals off the accommodating space from the outside is arranged between the assembly structure and the accommodating housing.

15. The pump array according to claim 2 , wherein the assembly structure is flange-mounted to the accommodating housing.

16. The pump array according to claim 2 , wherein the assembly structure, comprises a motor space outlet which connects a motor space, which is surrounded by the stator on the circumferential side, in fluid communication with the accommodating space.

17. The pump array according to claim 16 , wherein the motor space outlet is arranged laterally on the pump insert, or the motor space outlet emerges onto the outer side of the assembly structure via an opening of the motor space outlet pointed towards the circumferential wall.

18. The pump array according to claim 1 , wherein the accommodating housing comprises a discharge channel which emerges into the accommodating space and via which fluid can be discharged from the accommodating space or a storage container.

19. The pump array according to claim 1 , wherein the accommodating space is sealed off in relation to the inlet and the outlet.

20. The pump array according to claim 1 , wherein the stator forms at least a part of the outer circumference or the outer side of the pump insert and/or delineates the accommodating space.

21. The pump array according to claim 2 , wherein at least one of the assembly structure and the accommodating housing is made of metal or a metal alloy.

22. The pump array according to claim 4 , wherein the thermally conductive element comprises a thermally conductive paste or a thermally conductive pad.

23. The pump array according to claim 5 , wherein the carrier comprises a printed circuit board.

24. The pump array according to claim 6 , wherein the electronics housing is made of plastic.

25. The pump array according to claim 15 , wherein the assembly structure is fastened to the accommodating housing by means of at least one stud-bolt.

Assignees

• Shw Automotive Gmbh

Inventors

• Jäggle Gerd
• Ehringer Michael
• Wiebel Georg

Classifications

• F04C11/008 Primary

  Enclosed motor pump units · CPC title

• F04C2/08

  of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing · CPC title

• F04C2/10 Primary

  of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member · CPC title

• F04C2/102

  the two members rotating simultaneously around their respective axes · CPC title

• F04C15/00

  Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00 (of pumps specially adapted for elastic fluids F04C18/00 - F04C29/00) · CPC title