Fluid pump

Patent metadata

Field	Value
Publication number	US-10247185-B2
Application number	US-201514630956-A
Country	US
Kind code	B2
Filing date	Feb 25, 2015
Priority date	Feb 25, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A fluid pump includes a housing; an outlet; an inlet plate within the housing and having an inlet; an outlet plate disposed within the housing and having an outlet plate outlet passage; an electric motor which rotates about an axis; a pumping arrangement rotationally coupled to the electric motor such that rotation of the pumping arrangement causes fluid to be pumped from the inlet to the outlet plate outlet passage and through the outlet; a diverter plate between the outlet plate outlet passage and the electric motor and having a diverter passage which provides fluid communication from the outlet plate outlet passage, past the electric motor, to the outlet, the diverter plate also having an imperforate wall which is axially aligned with the outlet plate outlet passage such that the imperforate wall laterally directs fluid from the outlet passage to the diverter passage.

First claim

We claim:

1. A fluid pump comprising:
a housing;
an outlet which discharges fluid from said housing;
an inlet plate disposed within said housing, said inlet plate having an inlet which introduces fluid to said housing;
an outlet plate disposed within said housing, said outlet plate having an outlet plate outlet passage;
an electric motor disposed within said housing between said outlet plate and said outlet, said electric motor having a shaft which rotates about an axis;
a pumping arrangement rotationally coupled to said shaft such that rotation of said pumping arrangement by said shaft causes fluid to be pumped from said inlet to said outlet plate outlet passage and through said outlet;
a diverter plate disposed between said outlet plate outlet passage and said electric motor, said diverter plate having a diverter passage which provides fluid communication from said outlet plate outlet passage, past said electric motor, to said outlet, said diverter plate also having an imperforate wall which is axially aligned with said outlet plate outlet passage such that said imperforate wall laterally directs fluid from said outlet plate outlet passage to said diverter passage;
wherein said diverter plate includes a laterally extending diverter channel which provides fluid communication from said outlet plate outlet passage to said diverter passage;
wherein a portion of said diverter channel that is axially aligned with said diverter passage is closed in the axial direction to a volume defined between said outlet plate and said diverter plate while a portion of said diverter channel that is not axially aligned with said diverter passage is open in the axial direction to said volume between said outlet plate and said diverter plate; and
wherein said diverter plate includes an outer peripheral surface surrounding said axis and extending axially such that said diverter channel extends to said outer peripheral surface.

2. A fluid pump as in claim 1 wherein said diverter passage extends axially through said diverter plate.

3. A fluid pump as in claim 1 wherein said diverter plate includes a diverter central aperture extending axially therethrough such that said shaft passes through said diverter central aperture, said diverter central aperture being sealed, thereby preventing fluid from passing through said diverter central aperture.

4. A fluid pump as in claim 3 wherein said diverter central aperture is sealed by said diverter plate engaging said outlet plate.

5. A fluid pump as in claim 1 wherein said diverter plate includes a contamination trap in a side of said diverter plate that faces toward said electric motor, said contamination trap being defined by a recess.

6. A fluid pump as in claim 5 wherein said contamination trap is arcuate in shape.

7. A fluid pump as in claim 6 wherein said contamination trap has an arc length that is less than 360°.

8. A fluid pump as in claim 1 wherein said diverter passage is one of a plurality of diverter passages, wherein said imperforate wall laterally directs fluid from said outlet plate outlet passage to each of said plurality of diverter passages.

9. A fluid pump as in claim 8 wherein each of said plurality of diverter passages extends axially through said diverter plate to a side of said diverter plate proximal to said electric motor.

10. A fluid pump as in claim 8 wherein said diverter plate includes a diverter central aperture extending axially therethrough such that said shaft passes through said diverter central aperture, said diverter central aperture being sealed, thereby preventing fluid from passing through said diverter central aperture.

11. A fluid pump as in claim 10 wherein said diverter central aperture is sealed by said diverter plate engaging said outlet plate.

12. A fluid pump as in claim 8 wherein said diverter plate includes a contamination trap in a side of said diverter plate that faces toward said electric motor, said contamination trap being defined by a recess.

13. A fluid pump as in claim 12 wherein said contamination trap is arcuate in shape.

14. A fluid pump as in claim 13 wherein said contamination trap has an arc length that is less than 360°.

15. A fluid pump as in claim 1 , wherein said diverter plate includes a wall which is axially aligned with said diverter passage such that said wall of said diverter plate axially blocks axial communication between said diverter passage and said volume between said outlet plate and said diverter plate.

16. A fluid pump comprising:
a housing;
an outlet which discharges fluid from said housing;
an inlet plate disposed within said housing, said inlet plate having an inlet which introduces fluid to said housing;
an outlet plate disposed within said housing, said outlet plate having an outlet plate outlet passage;
an electric motor disposed within said housing between said outlet plate and said outlet, said electric motor having a shaft which rotates about an axis;
a pumping arrangement rotationally coupled to said shaft such that rotation of said pumping arrangement by said shaft causes fluid to be pumped from said inlet to said outlet plate outlet passage and through said outlet;
a diverter plate disposed between said outlet plate outlet passage and said electric motor, said diverter plate having a diverter passage which provides fluid communication from said outlet plate outlet passage, past said electric motor, to said outlet, said diverter plate also having an imperforate wall which is axially aligned with said outlet plate outlet passage such that said imperforate wall laterally directs fluid from said outlet plate outlet passage to said diverter passage;
wherein said diverter plate includes a laterally extending diverter channel which provides fluid communication from said outlet plate outlet passage to said diverter passage;
wherein a portion of said diverter channel that is axially aligned with said diverter passage is closed in the axial direction to a volume defined between said outlet plate and said diverter plate while a portion of said diverter channel that is not axially aligned with said diverter passage is open in the axial direction to said volume between said outlet plate and said diverter plate; and
wherein said diverter channel has a width perpendicular to said axis such that said width diverges along a path parallel to said axis toward said diverter passage.

17. A fluid pump as in claim 16 wherein said diverter channel diverges axially toward said diverter passage.

18. A fluid pump comprising:
a housing;
an outlet which discharges fluid from said housing;
an inlet plate disposed within said housing, said inlet plate having an inlet which introduces fluid to said housing;
an outlet plate disposed within said housing, said outlet plate having an outlet plate outlet passage;
an electric motor disposed within said housing between said outlet plate and said outlet, said electric motor having a shaft which rotates about an axis;
a pumping arrangement rotationally coupled to said shaft such that rotation of said pumping arrangement by said shaft causes fluid to be pumped from said inlet to said outlet plate outlet passage and through said outlet; and
a diverter plate disposed between said outlet plate outlet passage and said electric motor, said diverter plate having a diverter passage which provides fluid communication from said outlet plate outlet passage, past said electric motor, to said outlet, said diverter plate also having an imperforate wall which is axially aligned with said outlet plate outlet passage s

Assignees

• Delphi Tech Ip Ltd

Inventors

• Moreno Alejandro
• Mendoza Hector R

Classifications

• F04D29/528

  especially adapted for liquid pumps · CPC title

• F04D29/4293

  Details of fluid inlet or outlet · CPC title

• F04C2/103 Primary

  one member having simultaneously a rotational movement about its own axis and an orbital movement · CPC title

• F04D29/406

  especially adapted for liquid pumps · CPC title

• F04C2/02

  of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents · CPC title