US 12,266,992 B2
Electromagnetic pump
Fang Youtong, Hangzhou (CN); Ma Jien, Hangzhou (CN); Wu Wenxiao, Hangzhou (CN); Qiu Lin, Hangzhou (CN); Wu Lijian, Hangzhou (CN); Wang Dong, Hangzhou (CN); Zhang Jian, Hangzhou (CN); and Xu Bowen, Hangzhou (CN)
Assigned to Zhejiang University, Hangzhou (CN)
Filed by Zhejiang University, Hangzhou (CN)
Filed on Dec. 20, 2022, as Appl. No. 18/084,880.
Claims priority of application No. 202210499017.0 (CN), filed on May 9, 2022.
Prior Publication US 2023/0361667 A1, Nov. 9, 2023
Int. Cl. H02K 44/06 (2006.01); F04B 15/04 (2006.01); F04B 17/03 (2006.01)
CPC H02K 44/06 (2013.01) [F04B 15/04 (2013.01); F04B 17/03 (2013.01); H02K 2213/03 (2013.01)] 20 Claims
OG exemplary drawing
 
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 L1,

OG Complex Work Unit Math
where in r is a radius of the inner iron core, d1 is a thickness of the second pump channel wall, d2 is a thickness of the second protective layer, h is a width of the circulation channel,

OG Complex Work Unit Math
where n is the number of cavity dividing structures, and α is a half of the angle subtended by the ends of L1 at the axis of the central cylinder.