公开(公告)号：US10697449B2

公开(公告)日：2020-06-30

申请号：US15640735

申请日：2017-07-03

Applicant: Microjet Technology Co., Ltd.

Inventor： Shih-Chang Chen ,  Ying-Lun Chang ,  Hsiang-Dyi Wu ,  Yung-Lung Han ,  Chi-Feng Huang

IPC: F04B43/04 ,  F04B17/00 ,  F04B43/02 ,  F04B43/00 ,  F04B39/10

Abstract: A fluid control device includes a piezoelectric actuator and a deformable substrate. The piezoelectric actuator includes a piezoelectric element and a vibration plate. The piezoelectric element is attached on a first surface of the vibration plate and is subjected to deformation in response to an applied voltage. The vibration plate is subjected to a curvy vibration in response to the deformation of the piezoelectric element. A bulge is formed on a second surface of the vibration plate. The deformable substrate includes a flexible plate and a communication plate stacked on each other. A synchronously-deformed structure is defined by the flexible plate and the communication plate. The deformable substrate is bent in the direction away from the vibration plate. There is a specified depth maintained between the flexible plate and the bulge of the vibration plate. The flexible plate includes a movable part corresponding to the bulge of vibration plate.

公开(公告)号：US20200149209A1

公开(公告)日：2020-05-14

申请号：US16684570

申请日：2019-11-14

Applicant: Samsung Electronics Co., Ltd

Inventor： Takahiro NAKASHIMA ,  Kazushi MORI ,  Yoshiyuki NISHIOKA ,  Yuichi SUZUKI

IPC: D06F39/08 ,  D06F39/10 ,  F04B17/00 ,  F04B53/16 ,  F04B53/20

Abstract: A water transmission device and a washing machine including the same. The washing machine includes a water transmission device configured to discharge water in a washing tub, wherein the water transmission device includes a filter case which is disposed under the washing tub and accommodates a filter, and into which the water in the washing tub is introduced, a pump case connected to the filter case and accommodating an impeller configured to suction the water in the filter case and discharge, a motor configured to rotate the impeller, a suction hole through which a side portion of the pump case facing a center of the impeller and a side portion of the filter case, and an outlet which is open downward from a lowest end inside the pump case and communicates with a water discharge pipeline.

公开(公告)号：US10605237B2

公开(公告)日：2020-03-31

申请号：US15249753

申请日：2016-08-29

Applicant: KOREA INSTITUTE OF OCEAN SCIENCE & TECHNOLOGY (KIOST)

Inventor： Jin Hwan Ko ,  Patar Ebenezer Sitorus ,  Jin Soon Park

IPC: F04B17/06 ,  F03D5/06 ,  F03D9/28 ,  F03B13/26 ,  F03B17/06 ,  F04B17/00 ,  F04B19/22 ,  F04B23/06 ,  F04B53/10 ,  F04B53/14 ,  F04B53/16

Abstract: A multiple oscillating water pumping device includes: a wing member disposed in fluid to generate a lifting force using the flow energy of the fluid; a rotation device to reciprocally rotate the wing member to periodically change the direction of the lifting force acting on the wing member; an arm is rotatably coupled to the wing member, the arm being reciprocally rotated about a pivot shaft by the lifting force acting on the wing member; and a cylinder where fluid enters and exits according to the internal pressure that is periodically increased and decreased by the reciprocating motion of a piston that is connected with the arm through a connecting rod. The multiple oscillating water pumping device is configured to minimize the supply of a power source required for operation and to minimize the loss of head when pumped water flows toward a reservoir along a conduit.

公开(公告)号：US10570745B2

公开(公告)日：2020-02-25

申请号：US15371086

申请日：2016-12-06

Applicant: Molten Metal Equipment Innovations, LLC

Inventor： Paul V. Cooper

IPC: F04B17/00 ,  F01D5/18 ,  C21C1/06 ,  F16C3/02 ,  F16D1/108 ,  F27D3/16 ,  F27D27/00 ,  F27B3/22

Abstract: Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components.

公开(公告)号：US10569076B2

公开(公告)日：2020-02-25

申请号：US15632843

申请日：2017-06-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kiyoshi Kurihara ,  Susumu Takeuchi ,  Hiroaki Wada

IPC: A61M39/22 ,  F16K7/17 ,  F16K17/164 ,  A61M1/06 ,  F04B53/10 ,  A61M27/00 ,  F04B17/03 ,  F04B45/047 ,  F16K11/02 ,  F04B17/00 ,  F04B43/04 ,  A61M39/24 ,  B05B11/00 ,  B05B17/06

Abstract: A fluid control device includes a piezoelectric pump, an inhaler, and a valve. The piezoelectric pump has a gas suction hole and a gas discharge hole. The inhaler has a container, an inhalation port, and a connection hole. The valve has a first ventilation hole, a second ventilation hole, a third ventilation hole, a first valve housing, a second valve housing, and a valve body. The first ventilation hole of the valve is connected to the connection hole of the inhaler. The second ventilation hole of the valve is connected to the suction hole of the piezoelectric pump. The third ventilation hole of the valve is opened to the atmosphere. The valve body is held between the first valve housing and the second valve housing, and configures a first region and a second region.

公开(公告)号：US20200056598A1

公开(公告)日：2020-02-20

申请号：US16104808

申请日：2018-08-17

Applicant: Miguel A. Timm ,  Hans Swanger

Inventor： Miguel A. Timm ,  Hans Swanger

IPC: F04B17/00 ,  F24D11/00 ,  F24S40/55 ,  F24S10/90

Abstract: A thermal pump system energized by a daytime heating phase and a night time cooling phase associated with a naturally occurring environmental heating and cooling cycle includes a hydraulic fluid source, a thermal fluid expansion chamber having a fixed internal volume, and a hydraulic accumulator at least partially filled by a compressible gas. A first unidirectional flow valve connected to a first duct permits flow only out of the hydraulic fluid source during the night time cooling phase. A second unidirectional flow valve connected to a second duct permits flow only out of the thermal fluid expansion chamber upon expansion of the hydraulic fluid trapped in the thermal fluid expansion chamber due to heating during the daytime heating phase. The thermal fluid expansion chamber has a thermally conductive wall communicating thermal energy from the naturally occurring heating and cooling cycle to the hydraulic fluid trapped in the fixed internal volume.

公开(公告)号：US20190331101A1

公开(公告)日：2019-10-31

申请号：US16508856

申请日：2019-07-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenjiro OKAGUTI

IPC: F04B17/00 ,  A61B5/0225 ,  A61B5/021

Abstract: Provided are a fluid control device capable of operating a piezoelectric pump even in a case where a low discharge pressure or a slow pressurization speed is required and a sphygmomanometer including the fluid control device. A fluid control device includes a piezoelectric pump that includes a piezoelectric element, a self-excited circuit that performs, upon application of a driving power source voltage thereto, self-excited oscillation to drive the piezoelectric element, a switch that interrupts the driving power source voltage for the self-excited circuit, and a control circuit that changes an on duty ratio of the self-excited circuit by switching between states of the switch at a predetermined switching frequency and a predetermined on duty ratio.

公开(公告)号：US10426862B2

公开(公告)日：2019-10-01

申请号：US15727238

申请日：2017-10-06

Applicant: SPDI Holdings, Inc.

Inventor： Stephen N. Pitcher

IPC: A61L9/14 ,  B01F3/04 ,  A61M11/02 ,  F04B17/00 ,  F04B43/04 ,  F04B13/02 ,  F04B23/02 ,  F04B35/04 ,  F04B45/047 ,  F04B53/16 ,  F04F1/18 ,  A61M21/02 ,  A61M15/08 ,  A61M21/00

Abstract: Disclosed herein is a diffusing apparatus for diffusing essential oils into the air. The apparatus includes a reservoir configured to hold essential oils in an internal cavity, and a controller assembly removably coupled to the reservoir, the controller assembly including an air inlet port, a first controller, and a piezo micro air pump unit. The apparatus further includes a base removably coupled to the controller assembly, the base including a second controller, wherein the second controller is connected to the first controller. The apparatus further includes a tube in fluid connection at a first end with the micro air pump unit and extending into the reservoir, the tube providing a path for pressurized air from the micro air pump unit into the reservoir through a plurality of orifices at a second end of the tube.

公开(公告)号：US10376841B2

公开(公告)日：2019-08-13

申请号：US15652571

申请日：2017-07-18

Applicant: SOGANG UNIVERSITY RESEARCH & BUSINESS DEVELOPMENT FOUNDATION

Inventor： Woonsup Shin ,  Enhua Zhu

IPC: B01D61/42 ,  F04B19/04 ,  F04B19/00 ,  A61M5/142 ,  A61K9/00 ,  F04B17/00 ,  F04B17/03 ,  A61M5/145

Abstract: A fluid pumping system may include an electroosmotic pump; and a separation member provided at least one end of the electroosmotic pump, and configured to separate the fluid and a transfer target fluid. The electroosmotic pump may include: a membrane that allows a fluid to move therethrough; and a first electrode and a second electrode which are respectively provided at two opposite sides of the membrane, and each of which is formed of a porous material or has a porous structure to allow a fluid to move therethrough; each of the first electrode and the second electrode may be made of porous carbon only; and an electrochemical reaction of the first electrode and the second electrode may take place as a cation is moved in a direction whereby a charge balance is established.

公开(公告)号：US10343404B2

公开(公告)日：2019-07-09

申请号：US15641022

申请日：2017-07-03

Applicant: Microjet Technology Co., Ltd.

Inventor： Yung-Lung Han

IPC: B41J2/16 ,  B29C53/04 ,  F04B43/04 ,  H01L41/25 ,  B29C65/48 ,  B29C69/00 ,  H01L41/23 ,  F04B17/00 ,  B29L31/00

Abstract: A manufacturing method of a fluid control device is provided. Firstly, a housing, a piezoelectric actuator and a deformable substrate are provided. The piezoelectric actuator includes a piezoelectric element and a vibration plate. The deformable substrate includes a flexible plate and a communication plate. A bulge is formed on the vibration plate. The flexible plate includes a movable part. Next, the flexible plate and the communication plate are stacked and coupled, and a preformed synchronous deformation process is implemented by applying at least one external force to outer portion of the deformable substrate to form a preformed synchronously-deformed structure. Then, the housing, the piezoelectric actuator and the deformable substrate are sequentially stacked and coupled. The preformed synchronously-deformed structure is aligned with the bulge of the vibration plate. Consequently, a specified depth is defined between the movable part of the flexible plate and the bulge of the vibration plate.