公开(公告)号：US11353140B2

公开(公告)日：2022-06-07

申请号：US16775402

申请日：2020-01-29

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Chen Yang ,  Joe A. Ojeda

IPC: F16K99/00

Abstract: A microvalve includes a first plate having a surface defining an actuator cavity. A second plate has a surface that abuts the surface of the first plate and includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve. An actuator is connected to the displaceable member. The displaceable member includes a sealing portion having a plurality of elongated control arms extending inwardly from one end thereof, wherein the control arms are configured as a valve closing members for each of a plurality of fluid flow openings in the first plate.

公开(公告)号：US20200240547A1

公开(公告)日：2020-07-30

申请号：US16775402

申请日：2020-01-29

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Chen Yang ,  Joe A. Ojeda

IPC: F16K99/00

Abstract: A microvalve includes a first plate having a surface defining an actuator cavity. A second plate has a surface that abuts the surface of the first plate and includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve. An actuator is connected to the displaceable member. The displaceable member includes a sealing portion having a plurality of elongated control arms extending inwardly from one end thereof, wherein the control arms are configured as a valve closing members for each of a plurality of fluid flow openings in the first plate.

公开(公告)号：US10563896B2

公开(公告)日：2020-02-18

申请号：US16244440

申请日：2019-01-10

Applicant: DunAn Microstaq, Inc.

Inventor： Buu C. Chung ,  Wayne C. Long ,  Arvind Rao ,  Chen Yang ,  Joseph Nguyen ,  Joe A. Ojeda, Sr. ,  Colin B. Bingle

IPC: F25B49/02 ,  G01L27/00 ,  F25B41/06

Abstract: A manifold assembly is configured to calibrate and test one or more superheat controllers and includes a manifold frame, a manifold having a plurality of fluid conduits mounted to the manifold frame, and a plurality of superheat controller fittings mounted to the fluid conduits, each superheat controller fitting configured to have a superheat controller attached thereto.

公开(公告)号：US10556072B2

公开(公告)日：2020-02-11

申请号：US15658861

申请日：2017-07-25

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Joseph L. Nguyen ,  Joe A. Ojeda ,  Wayne C. Long

IPC: A61M16/00 ,  A61M15/00 ,  A61M16/20 ,  A61M39/22 ,  F16K99/00

Abstract: An improved aerosol dispensing apparatus includes an aerosol container, a discharge piece, an actuator, a flow control canister valve assembly attached to the aerosol container, a battery, and an electronically controlled flow control valve electronically connected to the battery and in fluid communication with the flow control canister valve assembly. The aerosol container and the attached flow control canister valve assembly are further attached to the actuator and the actuator is mounted for slidable movement within the discharge piece. The flow control canister valve assembly is movable between an open position wherein a volume of an aerosol formulation is directed from the aerosol container through the flow control canister valve assembly to the electronically controlled flow control valve, and a closed position wherein the aerosol formulation is not permitted to flow through the flow control canister valve assembly to the electronically controlled flow control valve.

公开(公告)号：US20190186800A1

公开(公告)日：2019-06-20

申请号：US16163855

申请日：2018-10-18

Applicant: DunAn Microstaq, Inc.

Inventor： Dhaman K. Besarla ,  Colin B. Bingle ,  Kevin C. Sinkar ,  Eric S. Shea

IPC: F25B49/02 ,  F25B40/06 ,  F25B41/06

CPC classification number: F25B49/02 ,  F25B40/06 ,  F25B41/062 ,  F25B2600/2513 ,  F25B2700/197 ,  F25B2700/21175

Abstract: A method of controlling fluid flow through a heating, ventilating, air conditioning, and refrigeration (HVAC-R) system includes measuring temperature and pressure at an outlet of an evaporator of the HVAC-R system, wherein the evaporator is in fluid communication with a compressor, a condenser, an expansion device between the evaporator and the condenser, and a flow control valve between the compressor and the condenser, and measuring a sub-cooling temperature at an outlet of the condenser. The measured evaporator temperature and pressure data is sent to a first superheat processor, and the measured sub-cooling temperature data is send to a second superheat processor. A control signal to the expansion device from the first superheat processor and a control signal to the flow control valve from the second superheat processor are then simultaneously sent.

公开(公告)号：US20190178545A1

公开(公告)日：2019-06-13

申请号：US16050007

申请日：2018-07-31

Applicant: DunAn Microstaq, Inc.

Inventor： Dhaman K. Besarla ,  Colin B. Bingle ,  Kevin C. Sinkar ,  Eric S. Shea

IPC: F25B49/02 ,  F25B41/06

Abstract: A heating, ventilating, air conditioning, and refrigeration (HVAC-R) system includes an evaporator, a compressor, a condenser, an expansion device between the condenser and the evaporator, a superheat controller between the evaporator and the compressor, and a mass flow meter between the condenser and the expansion device. The superheat controller is configured to measure refrigerant fluid pressure and temperature and calculate superheat therefrom, to receive and analyze a mass flow rate of the refrigerant fluid traveling out of the condenser and measured by the mass flow meter, and further configured to provide a control signal to the expansion device.

公开(公告)号：US20190167939A1

公开(公告)日：2019-06-06

申请号：US16266342

申请日：2019-02-04

Applicant: DunAn Microstaq, Inc. ,  Pearl Therapeutics, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Joseph Nguyen ,  Joe A. Ojeda, Sr. ,  Wayne Curtis Long ,  Michael Thomas Riebe ,  Matthew Skelly Ferriter ,  Jill Karen Sherwood ,  Daniel Marion Deaton, III ,  Michael Leon Franklin

IPC: A61M16/20 ,  A61M15/00

Abstract: An improved aerosol dispensing apparatus includes an aerosol container, a discharge piece movably mounted to the aerosol container, a flow control valve mounted within the discharge piece, a battery, and an electronically controlled metering valve electronically connected to the battery and in fluid communication with the flow control valve. The flow control valve is movable between an open position wherein a volume of an aerosol formulation is directed from the aerosol container through the flow control valve to the metering valve, and a closed position, wherein the metering valve is configured to precisely control a flow of the aerosol formulation outward of the discharge piece. A solenoid is electronically connected to the battery and is movable between an actuated position wherein the solenoid urges the flow control valve into the open position, and an un-actuated position wherein the flow control valve remains in the closed position.

公开(公告)号：US10234409B2

公开(公告)日：2019-03-19

申请号：US15265798

申请日：2016-09-14

Applicant: DunAn Microstaq, Inc.

Inventor： Arvind Rao ,  Chen Yang ,  Jennifer O'Keefe ,  Buu Chung

IPC: F25B49/02 ,  G01N25/00 ,  G01M99/00

Abstract: A test equipment arrangement includes a superheat controller configured for connection to a unit under test, and further configured to test at least one operational parameter of the unit under test.

公开(公告)号：US20190078819A1

公开(公告)日：2019-03-14

申请号：US16184620

申请日：2018-11-08

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Joe A. Ojeda ,  Gengxun K. Gurley ,  Chen Yang ,  Jennifer O'Keefe

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/06 ,  F25B2600/2513

Abstract: A spool assembly configured for use in a two-stage proportional control valve in a fluid system includes a substantially cylindrical sleeve having an axially extending sleeve bore extending from an open first end to an open second end. A spool includes a spool bore that extends from an open first axial end to a closed second axial end and is slidably mounted within the sleeve bore. The spool further includes a first circumferentially extending groove defining a fluid flow path, a second circumferentially extending groove formed near a first end thereof, a third circumferentially extending groove formed near the second axial end thereof, a circumferentially extending pressure groove formed therein between the second axial end and the third circumferentially extending groove, and first, second, and third transverse fluid passageways formed through a side wall of the spool.

公开(公告)号：US10190702B2

公开(公告)日：2019-01-29

申请号：US15451615

申请日：2017-03-07

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Parthiban Arunasalam ,  Joe A. Ojeda ,  Chen Yang

IPC: F16K99/00 ,  F16K31/02 ,  F16K31/08

Abstract: The electronically switchable MEMS valve includes a housing formed from soft magnetic material and defining a fluid flow path therethrough. A magnetic field generating member is mounted within the housing and connected to a source of electrical power. A MEMS valve portion is mounted within the magnetic field generating member, has a valve closing member movably mounted therein, and defines a portion of the fluid flow path therethrough. The valve closing element is movable between a closed position wherein the fluid flow path is blocked, and an open position wherein the fluid flow path is not blocked. When an electric current is removed from the magnetic field generating member, the valve closing element is configured to move to and remain in the one of the closed position and the open position to which the valve closing element is the closest when the electric current is removed.