公开(公告)号：US20130255801A1

公开(公告)日：2013-10-03

申请号：US13906377

申请日：2013-05-31

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Atsuhiko HIRATA ,  Gaku KAMITANI ,  Hiroyuki YOKOI

IPC: G05D7/01

CPC classification number: G05D7/012 ,  F16K31/126 ,  F16K31/1266 ,  G05D7/0113 ,  G05D7/0694 ,  Y10T137/7793 ,  Y10T137/7797

Abstract: A fluid supply device includes a fluid supply source, a valve, a differential-pressure generator, and a pressurizing device. The valve includes a casing, a displacement member that divides an inside of the casing into a first valve chamber and a second valve chamber, the displacement member being displaced by a pressure of a fluid being exerted on a front main surface and a back main surface of the displacement member, a first opening provided in the first valve chamber, a second opening provided in the first valve chamber, and a third opening provided in the second valve chamber. Thus, flow rate fluctuations are reduced even when the pressure on the ejection side or the suction side of the device fluctuates due to changes in atmospheric conditions.

Abstract translation: 流体供应装置包括流体供应源，阀，差压发生器和加压装置。 阀包括壳体，将壳体内部分成第一阀室和第二阀室的位移构件，位移构件被施加在前主表面和后主表面上的流体的压力移位 位于第一阀室中的第一开口，设置在第一阀室中的第二开口和设置在第二阀室中的第三开口。 因此，即使当设备的喷射侧或吸入侧的压力由于大气条件的变化而波动时，流量波动也减小。

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：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：US20190226472A1

公开(公告)日：2019-07-25

申请号：US16367477

申请日：2019-03-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Hiroyuki YOKOI

IPC: F04B45/047 ,  F16K7/17 ,  F16K15/14

Abstract: A valve includes a first plate (10) having a first through hole (100), a second plate (20) having a second through hole (210) that does not face the first through hole (100), a valve chamber (55) formed by being surrounded by the first plate (10) and the second plate (20), and a valve body (30) disposed in the valve chamber (55) and having a third through hole (300) that does not face the first through hole (100) and that faces the second through hole (200), the valve body (30) being movable up and down between the first plate (10) and the second plate (20). In addition, a second opening area of the second through hole (210) is smaller than a third opening area of the third through hole (300), and the second through hole (210) is located in the third through hole (300) when viewed from a front.

公开(公告)号：US20160377073A1

公开(公告)日：2016-12-29

申请号：US15258306

申请日：2016-09-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Nobuhira TANAKA ,  Hiroyuki YOKOI ,  Masahiro SASAKI ,  Kiyoshi KURIHARA

IPC: F04B45/047 ,  F04B49/22

CPC classification number: F04B45/047 ,  F04B17/003 ,  F04B45/04 ,  F04B53/10 ,  F04B53/16

Abstract: A piezoelectric blower (100) includes a housing (17), a vibrating plate (41), and a piezoelectric element (42). The vibrating plate (41) forms a column-shaped blower chamber (31) together with the housing (17). The vibrating plate (41) and the housing (17) are formed so that the blower chamber (31) has a radius a. The piezoelectric element (42) causes the vibrating plate (41) to concentrically bend and vibrate at a resonance frequency f. A recessed portion (26) is formed in the housing (17) on the side facing the vibrating plate (41). The recessed portion (26) defines a cavity (25), which constitutes the blower chamber (31) and communicates with the vent hole (24). The radius a of the blower chamber (31) and the resonance frequency f of the vibrating plate (41) satisfy a relationship of 0.8×(k0c)/(2π)≦af≦1.2×(k0c)/(2π).

Abstract translation: 压电鼓风机（100）包括壳体（17），振动板（41）和压电元件（42）。 振动板（41）与壳体（17）一起形成柱形鼓风机室（31）。 振动板（41）和壳体（17）形成为鼓风机室（31）具有半径a。 压电元件（42）使得振动板（41）以共振频率f同心地弯曲和振动。 在面向振动板（41）的一侧的壳体（17）中形成有凹部（26）。 凹部（26）限定了构成鼓风机室（31）并与通气孔（24）连通的空腔（25）。 鼓风机室（31）的半径a和振动板（41）的共振频率f满足0.8×（k0c）/（2π）≤af≤1.2×（k0c）/（2π）的关系。

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.