Electromagnetic pump

Patent metadata

Field	Value
Publication number	US-12266992-B2
Application number	US-202218084880-A
Country	US
Kind code	B2
Filing date	Dec 20, 2022
Priority date	May 9, 2022
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

Disclosed in the present invention is an electromagnetic pump, including: a pump body; an inner iron core, including a central cylinder, an axis of the central cylinder basically coinciding with an axis of the electromagnetic pump; a plurality of outer iron cores, disposed at least partially surrounding the inner iron core; a winding, at least partially disposed on the outer iron cores; and a pump channel mechanism, at least partially disposed between the outer iron cores and the inner iron core, where the pump channel mechanism includes: a first pump channel wall, a second pump channel wall, a circulation channel, and a cavity dividing structure, and being used for supporting the first pump channel wall and the second pump channel wall, the cavity dividing structure being further used for dividing the circulation channel, to divide the circulation channel into a plurality of channels.

First claim

The invention claimed is:

1. An electromagnetic pump, comprising:
a pump body, an accommodating space being formed in the pump body;
an inner iron core, the inner iron core being at least partially disposed in the accommodating space and comprising a central cylinder, an axis of the central cylinder substantially coinciding with an axis of the electromagnetic pump;
a plurality of outer iron cores, the plurality of outer iron cores being disposed at least partially surrounding the inner iron core;
a winding, the winding being at least partially disposed on the outer iron cores; and
a pump channel mechanism, the pump channel mechanism being at least partially disposed between the outer iron cores and the inner iron core, wherein
the pump channel mechanism comprises:
a first pump channel wall, the first pump channel wall being disposed between the outer iron cores and the inner iron core;
a second pump channel wall, the second pump channel wall being disposed between the first pump channel wall and the inner iron core;
a first protective layer, the first protective layer is disposed between the first pump channel wall and the outer iron cores;
a second protective layer, the second protective layer being disposed between the second pump channel wall and the inner iron core;
a circulation channel, the circulation channel being disposed between the first pump channel wall and the second pump channel wall; and
a cavity dividing structure, the cavity dividing structure being disposed between the first pump channel wall and the second pump channel wall and being used for supporting the first pump channel wall and the second pump channel wall,
the cavity dividing structure being further used for dividing the circulation channel, to divide the circulation channel into a plurality of channels, the cavity dividing structure comprising a first cavity dividing member and/or a second cavity dividing member and/or a third cavity dividing member, a cross section of the first cavity dividing member being a first cross section, the first cross section being substantially a first trapezoid, a length of a longer edge of the first cross section being L 1 ,

L
1

>

2
π

⁢

(

r
+

d
1

+

d
2

+
H

)

3
⁢
6
⁢
0

×

2
θ

where in r is a radius of the inner iron core, d 1 is a thickness of the second pump channel wall, d 2 is a thickness of the second protective layer, h is a width of the circulation channel,

θ
>

1
2

⁢

(

3
⁢
6
⁢
0

n

-
α

)

where n is the number of cavity dividing structures, and α is a half of the angle subtended by the ends of L 1 at the axis of the central cylinder.

2. The electromagnetic pump according to claim 1 , wherein the cavity dividing structure is connected to or abuts against the first and second pump channel walls, and the longer edge of the substantially trapezoid shaped cavity dividing structure is connected to or abuts against the first pump channel wall.

3. The electromagnetic pump according to claim 1 , wherein a length of a shorter bottom of the first cross section is L 2 , and

L
2

>

2
⁢

π
⁡
(

r
+

d
1

+

d
2

)

3
⁢
6
⁢
0

×
2
⁢

θ
.

4. The electromagnetic pump according to claim 1 , wherein a cross section of the second cavity dividing member is a second cross section, the second cross section is substantially a rectangle, a side length by which the second cross section is connected to or abuts against the first pump channel wall is L 1 , and a side length by which the second cross section is connected to or abuts against the second pump channel wall is also L 1 .

5. The electromagnetic pump according to claim 1 , wherein a cross section of the third cavity dividing member is a third cross section, the third cross section is substantially formed by splicing two second trapezoids, shorter bottoms of the two second trapezoids are spliced, a longer side of one second trapezoid is connected to or abuts against the first pump channel wall, and a longer side of the other second trapezoid is connected to or abuts against the second pump channel wall.

6. The electromagnetic pump according to claim 5 , wherein a length of the longer side of each second trapezoid is L 1 , a length of the shorter bottom of each second trapezoid is L 3 , and

L
3

>

2
⁢

π
⁡
(

r
+

d
1

+

d
2

+

Assignees

• Univ Zhejiang

Inventors

• Youtong Fang
• Jien Ma
• Wenxiao Wu
• Lin Qiu
• Lijian Wu
• Dong Wang
• Jian Zhang
• Bowen Xu

Classifications

• F04B15/04

  the fluids being hot or corrosive (for liquids near their boiling point, e.g. under subnormal pressure, F04B15/06) · CPC title

• F04B17/03

  driven by electric motors · CPC title

• H02K2213/03

  Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title

• H02K44/06 Primary

  Induction pumps · CPC title