Water pump and pumping device

Patent metadata

Field	Value
Publication number	US-12060871-B2
Application number	US-202217587651-A
Country	US
Kind code	B2
Filing date	Jan 28, 2022
Priority date	Oct 25, 2021
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A water pump, including: a first housing, including a first cavity and further including a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity; a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, covering an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and a magnetic driving part, having magnetism, being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, the flexible pumping part deforms under the power to enable a fluid to conduct a pumping stroke and a suction stroke.

First claim

The invention claimed is:

1. A water pump, comprising:
a first housing, comprising a first cavity, wherein the first housing further comprises a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity;
a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, wherein the flexible pumping part covers an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, wherein a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and
a magnetic driving part, having magnetism and being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, wherein the power comprises a first power, the flexible pumping part deforms under the power to enable a fluid to conduct: a pumping stroke and a suction stroke,
wherein the fluid in the second cavity flows out from the one-way water outlet via the first cavity in the pumping stroke, the second cavity deforms from a non-loaded state into a contracted state under the first power, and causes the fluid to conduct the pumping stroke during deformation, and
wherein the fluid flows from the one-way water inlet via the first cavity and enters the second cavity in the suction stroke, the second cavity returns to the non-loaded state from the contracted state under an elasticity of the flexible pumping part, and causes the fluid to conduct the suction stroke during deformation.

2. The water pump according to claim 1 , wherein the power further comprises a second power;
the second cavity returns to the non-loaded state from the contracted state under the elasticity of the flexible pumping part and the second power.

3. The water pump according to claim 1 , wherein the water pump further comprises a second housing covering an outside of the first housing, and the flexible pumping part is arranged between the first housing and the second housing; and
wherein the flexible pumping part comprises:
a flexible diaphragm, covering the outside of the first housing, and in sealing connection with the first housing, wherein the second cavity is formed between the flexible diaphragm and the first housing, and a third cavity is formed between the flexible diaphragm and the second housing, and
a magnetic part, contained in the third cavity, and configured to move towards the first housing to compress the second cavity, or move away from the first housing to expand the second cavity under driving of the power.

4. The water pump according to claim 3 , wherein the magnetic part comprises a magnetic fluid contained in the third cavity.

5. The water pump according to claim 4 , wherein the magnetic fluid is configured to fully fill the third cavity when the flexible diaphragm is in the non-loaded state.

6. The water pump according to claim 3 , wherein the magnetic part comprises a magnetic coating coated on an outer surface of the flexible diaphragm.

7. The water pump according to claim 3 , wherein the magnetic part comprises a magnet fixed on an outer surface of the flexible diaphragm.

8. The water pump according to claim 3 , wherein the magnetic driving part comprises a first magnet arranged on an outer peripheral face of the first housing and a second magnet arranged on an outer peripheral face of the second housing, and at least one of the first magnet and the second magnet is an electromagnet and is configured to be attracted with the magnetic part respectively;
wherein an attracting force between the first magnet and the magnetic part is larger than an attracting force between the second magnet and the magnetic part in the pumping stroke; and
wherein the attracting force between the second magnet and the magnetic part is larger than the attracting force between the first magnet and the magnetic part in the suction stroke.

9. The water pump according to claim 8 , wherein the first magnet and the second magnet are both electromagnets, and the first magnet and the second magnet are alternately energized.

10. The water pump according to claim 8 , wherein one of the first magnet and the second magnet is an electromagnet, and the other is a permanent magnet, wherein the one as the electromagnet is configured to be energized and de-energized at a first preset frequency, and an attracting force to the magnetic part generated during energization is larger than an attracting force to the magnetic part of the one as the permanent magnet.

11. The water pump according to claim 3 , further comprising a third housing covering an outside of the second housing.

12. The water pump according to claim 1 , wherein the one-way water inlet is provided with one or more one-way water inlet valves, and the one-way water outlet is provided with one or more one-way water outlet valves.

13. A pumping device, comprising a plurality of water pumps,
wherein one of the plurality of water pumps comprises:
a first housing, comprising a first cavity, wherein the first housing further comprises a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity;
a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, wherein the flexible pumping part covers an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, wherein a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and
a magnetic driving part, having magnetism and being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, wherein the power comprises a first power, the flexible pumping part deforms under the power to enable a fluid to conduct:
a pumping stroke, wherein a fluid in the second cavity flows out from the one-way water outlet via the first cavity, the second cavity deforms from a non-loaded state into a contracted state under the first power, and causes the fluid to conduct the pumping stroke during deformation, and
a suction stroke, wherein the fluid flows from the one-way water inlet via the first cavity and enters the second cavity, the second cavity returns to the non-loaded state from the contracted state under an elastic of the flexible pumping part, and causes the fluid to conduct the suction stroke during deformation,

wherein the plurality of water pumps are in series connection or parallel connection, and the pumping stroke and the suction stroke of the fluid in the plurality of water pumps are synchronized.

14. The pumping device according to claim 13 , wherein the power further comprises a second power;
the second cavity returns to the non-loaded state from the contracted state under an effect of the elastic of the flexible pumping part and the second power.

15. The pumping device according to claim 13 , wherein the water pump further comprises a second housing covering an outside of the first housing, and the flexible pumping part is arranged between the first housing and the second housing; and
wherein the flexible pumping part comprises:
a flexible diaphragm, covering the outside of the first housing, and in sealing connection with the first housing, wherein the second cavity is formed between the flexible diaphragm and the first housing, and a third cavity is formed between the flexible diaphragm and the second housing, and
a magnetic part, contained in the third cavity, and configured to move towards

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Zhu Kenan

Classifications

• F04B43/02

  having plate-like flexible members, e.g. diaphragms (F04B43/14 takes precedence) · CPC title

• F04B43/10

  Pumps having fluid drive · CPC title

• F04B43/04

  Pumps having electric drive · CPC title

• F04B43/09

  Pumps having electric drive · CPC title

• F04B53/16

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title