公开(公告)号：US20200318630A1

公开(公告)日：2020-10-08

申请号：US16907475

申请日：2020-06-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke KONDO ,  Hiroaki WADA ,  Nobuhira TANAKA ,  Hiroyuki YOKOI ,  Hiroki ACHIWA ,  Hiroshi TAKEMURA

IPC: F04B43/04 ,  H01L41/09

Abstract: A pump includes a housing, a first vibrating body, a second vibrating body, and a peripheral wall portion that define a pump chamber, and a driving body. The housing has a first wall portion opposed to the first vibrating body and a second wall portion. The first wall portion includes a first concave portion that opens toward the first vibrating body and opposed to a central portion of the first vibrating body and a first circumferential portion adjacent to the first concave portion. A first chamber includes a first wide portion defined by the first concave portion and the first vibrating body, and a first narrow portion defined by the first circumferential portion and the first vibrating body. The first narrow portion overlaps with at least part of the first vibrating body.

公开(公告)号：US20180051686A1

公开(公告)日：2018-02-22

申请号：US15800683

申请日：2017-11-01

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO

IPC: F04B43/04 ,  F04B45/047 ,  F04B45/053 ,  F04B53/10 ,  F04B39/12

Abstract: A fluid control device includes a pump and an external structure. The pump includes an actuator, a top portion opposed to the actuator such that a gap is disposed therebetween in the thickness direction, and a side wall plate extending from the top portion in the thickness direction and supporting a vibration member. The actuator includes the plate-like vibration member and a piezoelectric element configured to cause the vibration member to vibrate in the thickness direction. The top portion includes a projection portion and a fixation portion projecting beyond the side wall plate in an outward direction perpendicular to the thickness direction. The top portion is fixed to an external structure outside the projection portion.

公开(公告)号：US20180187672A1

公开(公告)日：2018-07-05

申请号：US15906282

申请日：2018-02-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO ,  Hiroaki WADA

IPC: F04B45/047

CPC classification number: F04B45/047 ,  F04B45/04

Abstract: A piezoelectric blower includes a valve unit, a pump unit, a controller, and an outer housing. The valve unit includes a plurality of ejection holes and film holes. The pump unit includes a plurality of communication holes and suction holes. The outer housing covers the valve unit and the pump unit with a gap between the outer housing and each of the valve unit and the pump unit. Thus, the outer housing forms vent passages between the outer housing and the valve unit and between the outer housing and the pump unit. The inlet communicates with the vent passage. The outlet communicates with the vent passage. At least one of the inlet and the outlet is displaced from a central axis of the pump chamber. The ejection holes, the film holes, the communication holes, and the suction holes are symmetric about the central axis of the pump chamber

公开(公告)号：US20200371536A1

公开(公告)日：2020-11-26

申请号：US16991458

申请日：2020-08-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO ,  Hiroyuki YOKOI

IPC: G05D16/06 ,  F04B17/00 ,  F04B53/10 ,  A61M39/22

Abstract: A fluid control apparatus includes a valve and a pump. The valve has a valve chamber surrounded by the first main plate, the second main plate, and the side plate. The first main plate has a first aperture, and the second main plate has a second aperture. The valve further includes a valve diaphragm disposed inside the valve chamber. The valve diaphragm is configured to switch between a state in which the first aperture and the second aperture communicate with each other and a state in which the first aperture and the second aperture do not communicate with each other. The pump includes a vibration unit that has a piezoelectric device and a vibrating plate. The pump has a pump chamber that is defined by the vibration unit and the second main plate. The pump chamber communicates with the valve chamber through the second aperture.

公开(公告)号：US20190170133A1

公开(公告)日：2019-06-06

申请号：US16260303

申请日：2019-01-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO

IPC: F04B43/04 ,  F04B45/047 ,  F04B39/10

Abstract: A valve includes a first plate, a side wall plate, a second plate, and a third plate. The first plate has a plurality of first vent holes. The second plate constitutes a valve chamber along with the first plate and the side wall plate. The second plate includes a second principal surface opposing a first principal surface of the first plate. The second plate has a plurality of second vent holes. The third plate has a plurality of third vent holes. The plurality of third vent holes overlaps with the plurality of first vent holes without overlapping with the plurality of second vent holes in a plan view in a direction in which the first plate and the second plate oppose each other. Both principal surfaces of the third plate oppose the first principal surface and the second principal surface. The third plate is disposed in the valve chamber.

公开(公告)号：US20210164464A1

公开(公告)日：2021-06-03

申请号：US17170171

申请日：2021-02-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO ,  Hiroaki WADA

IPC: F04B45/047

Abstract: A piezoelectric blower includes a valve unit, a pump unit, a controller, and an outer housing. The valve unit includes a plurality of ejection holes and film holes. The pump unit includes a plurality of communication holes and suction holes. The outer housing covers the valve unit and the pump unit with a gap between the outer housing and each of the valve unit and the pump unit. Thus, the outer housing forms vent passages between the outer housing and the valve unit and between the outer housing and the pump unit. The inlet communicates with the vent passage. The outlet communicates with the vent passage. At least one of the inlet and the outlet is displaced from a central axis of the pump chamber. The ejection holes, the film holes, the communication holes, and the suction holes are symmetric about the central axis of the pump chamber.

公开(公告)号：US20210003226A1

公开(公告)日：2021-01-07

申请号：US17029612

申请日：2020-09-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki YOKOI ,  Nobuhira TANAKA ,  Daisuke KONDO

IPC: F16K15/02 ,  F04B43/04

Abstract: A valve includes a first plate having a first vent hole; a second plate defining a valve chamber, which communicates with the first vent hole, between the second plate and the first plate, the second plate having a second vent hole that communicates with the valve chamber and that does not face the first vent hole; and a movable plate having a third vent hole that faces the second vent hole and disposed in the valve chamber such that the movable plate is movable between the first plate and the second plate. The second plate has an auxiliary hole that does not face the third vent hole in the movable plate, the auxiliary hole being surrounded by an edge portion that forms a first corner portion having a substantially convex rounded shape in front view of a principal surface of the second plate at a side facing the valve chamber.

公开(公告)号：US20160271305A1

公开(公告)日：2016-09-22

申请号：US15167092

申请日：2016-05-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kiyoshi KURIHARA ,  Daisuke KONDO ,  Hiroshi TAKEMURA ,  Yoshinori ANDO

IPC: A61M1/00

CPC classification number: A61M1/0023 ,  A61M1/0011 ,  A61M1/0019 ,  A61M1/0025 ,  A61M1/0031 ,  A61M1/0052 ,  A61M1/0056 ,  A61M1/0066 ,  A61M1/0088 ,  A61M1/009 ,  A61M1/06 ,  A61M1/062 ,  A61M2205/42 ,  A61M2205/8206 ,  A61M2210/0618

Abstract: Provided is a suction device that can suppress sound and vibration during use. A suction device includes a flow-passage forming section (1) having a suction port (20) from which fluid is sucked, a discharge port (29) from which the fluid is discharged, and a flow passage (2) which is sealed from an outside except at the suction port (20) and the discharge port (29) and through which the fluid flows, and a piezoelectric driving part (33) that generates a flow of the fluid in the flow passage (2). The piezoelectric driving part (33) includes a diaphragm (37) and a piezoelectric element (34) as a moving part that transmits driving force to the fluid. The moving part is entirely disposed inside the flow passage (2).

Abstract translation: 提供了一种能够抑制使用期间的声音和振动的吸引装置。 抽吸装置包括具有吸入流体的吸入口（20）的流动通道形成部分（1），流体被排出的排出口（29），以及流体通道 在吸入口（20）和排出口（29）之外的流体流过的外部的外部以及在流路（2）中产生流体的压电驱动部（33）。 压电驱动部（33）具有作为将驱动力传递给流体的移动部的振动膜（37）和压电元件（34）。 移动部件完全设置在流路（2）的内部。

公开(公告)号：US20160010636A1

公开(公告)日：2016-01-14

申请号：US14858737

申请日：2015-09-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Daisuke KONDO ,  Kiyoshi KURIHARA

IPC: F04B45/047 ,  F04B53/08

CPC classification number: F04B45/047 ,  F04B43/046 ,  F04B53/08 ,  F04F7/00

Abstract: A piezoelectric blower includes an outer casing and a blower main body. The outer casing houses the blower main body. The blower main body includes a top plate, side plate, first vibrating plate, piezoelectric element, intermediate plate, second vibrating plate, side plate, and bottom plate and has a structure in which they are laminated in sequence. The top plate, side plate, and first vibrating plate define a columnar first blower space. The second vibrating plate, side plate, bottom plate define a columnar second blower space. The distance from a neutral plane of the piezoelectric element in the thickness direction to a surface of the second vibrating plate, the surface being near the piezoelectric element, is longer than the distance from the neutral plane to a surface of the first vibrating plate, the surface being near the piezoelectric element.

Abstract translation: 压电鼓风机包括外壳和鼓风机主体。 外壳容纳鼓风机主体。 鼓风机主体包括顶板，侧板，第一振动板，压电元件，中间板，第二振动板，侧板和底板，并且具有依次层叠的结构。 顶板，侧板和第一振动板限定了柱状的第一鼓风机空间。 第二振动板，侧板，底板限定了柱状的第二鼓风机空间。 压电元件的中性平面在厚度方向到第二振动板的表面（靠近压电元件的表面）的距离比从中性面到第一振动板的表面的距离长， 表面靠近压电元件。

公开(公告)号：US20140178220A1

公开(公告)日：2014-06-26

申请号：US14066958

申请日：2013-10-30

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Masaaki FUJISAKI ,  Kiyoshi KURIHARA ,  Daisuke KONDO

IPC: F04B43/04

CPC classification number: F04B43/046 ,  F04B45/047 ,  F04F7/00

Abstract: A piezoelectric micro-blower includes an inner case to which a peripheral portion of a vibrating plate including a piezoelectric element is fixed such that a blower chamber is defined between the inner case and the vibrating plate and an outer case arranged to cover an outer periphery of the inner case with a gap therebetween. The inner case is elastically retained in the outer case by a plurality of connecting portions. A first opening is provided in a top plate portion of the inner case that faces a central portion of the vibrating plate, and a second opening is provided in a top plate portion of the outer case that faces the first opening. A central space is provided between the top plate portions, and fluid introduced from the outside is guided to the central space through the gap between the inner and outer cases.

Abstract translation: 一种压电微型鼓风机，包括内壳体，其中包括压电元件的振动板的周边部分固定在内壳体和振动板之间限定鼓风机室，外壳体设置成覆盖外壳 内壳体之间具有间隙。 内壳通过多个连接部分弹性地保持在外壳中。 第一开口设置在内壳体的面对振动板的中心部分的顶板部分中，并且第二开口设置在外壳体的面向第一开口的顶板部分中。 在顶板部之间设置中央空间，从外侧引入的流体通过内外壳之间的间隙被引导到中央空间。