公开(公告)号：US20230203739A1

公开(公告)日：2023-06-29

申请号：US18145864

申请日：2022-12-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Chikara KOJIMA ,  Tomohide ONOGI

IPC: D06F39/10 ,  D06F39/08 ,  C02F1/36 ,  B06B1/06

CPC classification number: D06F39/10 ,  D06F39/083 ,  C02F1/36 ,  B06B1/0622 ,  C02F2103/002

Abstract: A fluid device includes: a first flow path that extends along a first axis and through which a fluid flows in a positive side of the first axis; a first ultrasonic element configured to generate a first standing wave along a second axis orthogonal to the first axis in the first flow path; and a second flow path connected to the first flow path such that the fluid flows therethrough and extending along a third axis intersecting a plane including the first axis and the second axis. A first connection port for connecting the first flow path and the second flow path is formed corresponding to a position of either an antinode of the first standing wave or a node of a first standing wave.

公开(公告)号：US20220160331A1

公开(公告)日：2022-05-26

申请号：US17456387

申请日：2021-11-24

Applicant: Seiko Epson Corporation

Inventor： Koji OHASHI ,  Chikara KOJIMA ,  Makoto FURUHATA ,  Tomohide ONOGI ,  Tomohiro SAYAMA

IPC: A61B8/00 ,  B06B1/02 ,  B06B1/06 ,  G01S15/89

Abstract: A piezoelectric actuator includes a vibrating plate including a first surface that closes an opening provided in a substrate and a second surface in which a plurality of piezoelectric elements is provided, a suppression part configured to suppress a vibration of the vibrating plate, and a first wall and a second wall protruding from the first surface to the opening. When a portion where the first electrode, the piezoelectric layer and the second electrode overlap each other is an active part of the piezoelectric element, the first wall and the second wall are provided to sandwich the active part in plan view from the stacking direction of the first electrode, the piezoelectric layer and the second electrode, and the second wall is different from the first wall at least in one of the width, height, length and physical property.

公开(公告)号：US20200166618A1

公开(公告)日：2020-05-28

申请号：US16690527

申请日：2019-11-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Chikara KOJIMA ,  Koji OHASHI ,  Hironori SUZUKI ,  Tomohide ONOGI

IPC: G01S7/521

Abstract: An ultrasonic device includes nine ultrasonic array units arranged in a grid pattern of three rows and three columns, nine drive bypass wires that input and output drive signals to and from the respective ultrasonic array units, a first common bypass wire to which a common potential is applied, coupled to the eight ultrasonic array units, a second common bypass wire coupled to the ultrasonic array unit to which the first common bypass wire is not coupled, and a third common bypass wire coupling the first and the second common bypass wires. One of the drive bypass wires, the first common bypass wire, and the second common bypass wire is placed between the ultrasonic array units placed adjacent to each other. The third common bypass wire is placed inside of the ultrasonic array unit placed adjacent to the ultrasonic array unit coupled to the second common bypass wire.

公开(公告)号：US20230111845A1

公开(公告)日：2023-04-13

申请号：US18045536

申请日：2022-10-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Keita KUBO ,  Chikara KOJIMA ,  Tomohide ONOGI ,  Mitsuru MIYASAKA

IPC: B01D43/00 ,  G01N15/14 ,  C02F1/36

Abstract: A fluid device includes: a flow path through which a fluid flows; and an ultrasonic wave application device including an ultrasonic element that transmits an ultrasonic wave, in which the flow path has, as flow path wall surfaces, an ultrasonic wave application surface that applies, to the fluid, the ultrasonic wave transmitted from the ultrasonic element, and a reflection surface that reflects the ultrasonic wave applied to the fluid from the ultrasonic wave application surface, and the reflection surface has a concave curved surface shape.

公开(公告)号：US20230076028A1

公开(公告)日：2023-03-09

申请号：US17929820

申请日：2022-09-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Keita KUBO ,  Chikara KOJIMA ,  Tomohide ONOGI ,  Mitsuru MIYASAKA

IPC: F15D1/00

Abstract: A fluidic device includes a channel in which a fluid flows, and an ultrasonic element generating standing wave in the fluid within the channel by applying ultrasonic wave to the fluid, wherein the channel has a first portion formed using a resin material having a first reflectance of ultrasonic wave propagating in the fluid less than a predetermined value and a second portion having a second reflectance of ultrasonic wave propagating in the fluid equal to or more than the predetermined value, and the second portion is placed on two different surfaces along a flow direction of the fluid within the channel.

公开(公告)号：US20150150533A1

公开(公告)日：2015-06-04

申请号：US14525623

申请日：2014-10-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomoaki NAKAMURA ,  Yasunori ONISHI ,  Tomohide ONOGI

IPC: A61B8/00 ,  A61B8/08 ,  A61B8/14 ,  G01S15/89

CPC classification number: A61B8/4494 ,  A61B8/145 ,  A61B8/4427 ,  A61B8/5207 ,  B06B1/0622 ,  G01S15/8918 ,  G10K11/004

Abstract: An ultrasonic device includes a substrate and a support member. The substrate has an element array including a plurality of ultrasonic transducer elements arranged in an array form. The support member has a surface adhered to the substrate in an area including the element array, and an opposite surface opposite from the surface adhered to the substrate, a distance from the surface adhered to the substrate to the opposite surface being different with respect to two adjacent ones of the ultrasonic transducer elements in the element array.

Abstract translation: 超声波装置包括基板和支撑部件。 衬底具有包括以阵列形式布置的多个超声换能器元件的元件阵列。 支撑构件在包括元件阵列的区域中具有粘附到基板的表面和与粘附到基板的表面相对的相对表面，从附着到基板的表面到相对表面的距离相对于两个不同 元件阵列中相邻的超声换能器元件。

公开(公告)号：US20230228604A1

公开(公告)日：2023-07-20

申请号：US18156535

申请日：2023-01-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomohide ONOGI ,  Chikara KOJIMA

IPC: G01F1/667 ,  G01F23/2962

CPC classification number: G01F1/667 ,  G01F23/2962

Abstract: A fluidic device 10 includes: a channel 20 that extends along an X axis and through which a fluid S flows; a standing wave generation part 30 that generates a standing wave SW transmitting along a Y axis in the fluid S in the channel 20; a transmission and reception part 40 that transmits an ultrasonic wave to the fluid S in the channel 20 and receives the ultrasonic wave transmitted through the fluid S; a time-of-flight measurement unit 55 that measures a time of flight that is a period of time from when the transmission and reception part 40 transmits the ultrasonic wave to when the transmission and reception part 40 receives the ultrasonic wave; and a drive control unit 582 that controls driving of the standing wave generation part 30 based on the time of flight of the ultrasonic wave.

公开(公告)号：US20220064856A1

公开(公告)日：2022-03-03

申请号：US17460374

申请日：2021-08-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Kensaku MATSUDA ,  Naotaka HIGUCHI ,  Masahide NAKAMURA ,  Tomohide ONOGI

IPC: D21F1/74 ,  D21G9/00

Abstract: A fibrous body accumulating device includes an accumulating section including a drum that introduces and releases a material including fibers, a detection section detecting a presence of the material in the drum, and an estimation section estimating an amount of the material in the drum based on a detection frequency at which the detection section detects the material. The fibrous body accumulating device further includes a storage section in which a calibration curve showing a relationship between the detection frequency and the amount of the material in the drum is stored, and the estimation section calculates information on the detection frequency and estimates the amount of the material in the drum with reference to the calibration curve.

公开(公告)号：US20230226466A1

公开(公告)日：2023-07-20

申请号：US18157244

申请日：2023-01-20

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomohide ONOGI ,  Chikara KOJIMA

IPC: B01D21/28 ,  B01D21/34 ,  C02F1/36 ,  C02F1/00

CPC classification number: B01D21/283 ,  B01D21/34 ,  C02F1/36 ,  C02F1/008

Abstract: A fluidic device includes: a channel that extends along a first axis and through which a fluid flows; an ultrasonic transmission part that is disposed at the channel and transmits an ultrasonic wave into the channel along a second axis orthogonal to the first axis in response to an input of a drive signal; and a controller that controls the ultrasonic transmission part. The controller measures impedance of the ultrasonic transmission part at a time when the ultrasonic transmission part is driven while changing a drive frequency of the drive signal within a predetermined range, specifies a drive frequency at which the impedance is a local maximum and sets the drive frequency at which the impedance is a local maximum as a first drive frequency, and inputs the drive signal of the first drive frequency to the ultrasonic transmission part.

公开(公告)号：US20220034782A1

公开(公告)日：2022-02-03

申请号：US17387367

申请日：2021-07-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Chikara KOJIMA ,  Tomohide ONOGI ,  Kanechika KIYOSE ,  Mitsuru MIYASAKA ,  Mio SASAKI

IPC: G01N15/14

Abstract: A fluid device includes: a flow path through which a fluid flows; and an ultrasonic wave transmitter configured to transmit an ultrasonic wave to generate a standing wave to the fluid in the flow path along a first direction orthogonal to a flowing direction of the fluid. The ultrasonic wave transmitter is in contact with the fluid and faces an antinode region corresponding to any antinode in the standing wave.