公开(公告)号：US20240052822A1

公开(公告)日：2024-02-15

申请号：US18494105

申请日：2023-10-25

申请人： Murata Manufacturing Co., Ltd.

发明人： Yukiharu KODAMA

IPC分类号： F04B39/16 ,  F04B43/04 ,  B01D46/00 ,  B01D46/10

CPC分类号： F04B39/16 ,  F04B43/046 ,  B01D46/0005 ,  B01D46/10 ,  B01D2265/06 ,  B01D2265/04

摘要： A pump body includes a cover member having a through hole. A filter member is located and shaped, on an outside of the pump body closer to the cover member, so as to overlap the through hole. A plurality of adhesive members hold the filter member to the pump body so as to be able to change a distance between the cover member and at least a part, overlapping the through hole, of the filter member. The plurality of adhesive members are shaped such that a space formed between the cover member and the part, overlapping the through hole, of the filter member communicates with an opening between the cover member and at least a part of an outer edge of the filter member in a state in which the part, overlapping the through hole, of the filter member is apart from the cover member.

公开(公告)号：US20200032786A1

公开(公告)日：2020-01-30

申请号：US16593451

申请日：2019-10-04

申请人： Murata Manufacturing Co., Ltd.

发明人： Atsuhiko HIRATA ,  Yukiharu KODAMA

IPC分类号： F04B45/047 ,  F04B43/04

摘要： A pump (1) includes a vibrating plate (15) that has a central part (21), a frame part (22), and connecting parts (23 to 26), a piezoelectric element (16) that is stacked over the central part (21) and configured to cause flexural vibrations to occur concentrically from the central part (21) to the connecting parts (23 to 26), and an opposed plate (13) that is stacked over the frame part (22) and positioned facing each of the connecting parts (23 to 26) with a spacing therebetween. The vibrating plate (15) has such a resonant mode that an antinode occurs in each of the central part (21) and the connecting parts (23 to 26). The opposed plate (13) has, at positions facing the connecting parts (23 to 26), a plurality of channel holes (39 to 43) through which a fluid flows.

公开(公告)号：US20200018303A1

公开(公告)日：2020-01-16

申请号：US16578438

申请日：2019-09-23

申请人： Murata Manufacturing Co., Ltd.

发明人： Atsuhiko HIRATA ,  Yukiharu KODAMA ,  Kenta OMORI

IPC分类号： F04B43/00 ,  F04B17/00 ,  F04B43/04 ,  H01L41/09 ,  F04B45/047

摘要： A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion.