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.

公开(公告)号：US10125988B2

公开(公告)日：2018-11-13

申请号：US15297400

申请日：2016-10-19

Applicant: DunAn Microstaq, Inc.

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

IPC: F16K25/00 ,  F23N1/00 ,  F16K31/06 ,  F16K31/524 ,  F16K99/00 ,  F16K37/00

Abstract: A two-stage fluid control valve includes a first stage mechanical control valve movable between an open position and a leak-free closed position, and a second stage microvalve configured to control the flow of fluid through a fluid outlet of the two-stage fluid control valve when the first stage mechanical control valve is in the open position.

公开(公告)号：US09970572B2

公开(公告)日：2018-05-15

申请号：US14919953

申请日：2015-10-22

Applicant: DunAn Microstaq, Inc.

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

IPC: F16K31/126 ,  F16K99/00

CPC classification number: F16K99/0059 ,  F16K31/126 ,  F16K99/0042

Abstract: A valve assembly is configured to regulate the flow of an isolated fluid therethrough and includes a first valve stage configured to control the flow of a first fluid through a first fluid circuit, and a second valve stage configured to control the flow of a second fluid through a second fluid circuit. The first valve stage is connected to the second valve stage such that the first fluid acts on the second valve stage to move the second valve stage between open and closed positions. The second fluid flowing through the second valve stage is also isolated from the first fluid flowing through the first valve stage.

公开(公告)号：US09909671B2

公开(公告)日：2018-03-06

申请号：US15191567

申请日：2016-06-24

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Gengxun K. Gurley

IPC: F16K1/46 ,  F16K99/00 ,  F16K31/124

CPC classification number: F16K1/46 ,  F16K31/124 ,  F16K99/0001 ,  F16K2099/009

Abstract: A hybrid spool valve includes a body having a longitudinal bore. The bore has a fluid inlet chamber in fluid communication with a fluid inlet port and a fluid outlet chamber in fluid communication with a fluid outlet port. A spool is slidably mounted in the bore and is movable between a fully open position, a fully closed position, and a plurality of partially open positions. A pilot microvalve is mounted within the bore and is configured to control the sliding movement of the spool by varying the flow of fluid therethrough. A seal is disposed in a groove formed in an outside surface of the spool such that when the spool is in the fully closed position the seal engages a wall of the bore, and when the spool is the fully open position or one of the partially open positions the seal does not engage the bore.

公开(公告)号：US09551435B2

公开(公告)日：2017-01-24

申请号：US14704505

申请日：2015-05-05

Applicant: DunAn Microstaq, Inc.

Inventor： Parthiban Arunasalam ,  Arvind Panduranga Rao ,  Dhaman Kumar Besarla ,  Gengxun Kara Gurley

IPC: F16K99/00 ,  F16K11/07 ,  F16K31/02 ,  B08B7/02 ,  B08B17/00

CPC classification number: F16K99/0003 ,  B08B7/02 ,  B08B17/00 ,  F16K11/0716 ,  F16K31/025 ,  F16K99/0044 ,  F16K2099/009 ,  F16K2099/0098 ,  Y10T137/043

Abstract: A method of cleaning contaminants, including particulate contaminants, from a valve in a fluid system includes moving a valve flow control element of the valve from a first position to a second position in response to a change in a condition in the fluid system other than a change in superheat.

Abstract translation: 从流体系统中的阀清除污染物（包括颗粒污染物）的方法包括响应于流体系统中的状态的改变将阀的阀流量控制元件从第一位置移动到第二位置，除了 过热变化

公开(公告)号：US20170002932A1

公开(公告)日：2017-01-05

申请号：US15191567

申请日：2016-06-24

Applicant: DunAn Microstaq, Inc.

Inventor： E. Nelson Fuller ,  Gengxun K. Gurley

IPC: F16K1/46 ,  F16K1/52 ,  F16K99/00 ,  F16K1/12

CPC classification number: F16K1/46 ,  F16K31/124 ,  F16K99/0001 ,  F16K2099/009

Abstract: A hybrid spool valve includes a body having a longitudinal bore. The bore has a fluid inlet chamber in fluid communication with a fluid inlet port and a fluid outlet chamber in fluid communication with a fluid outlet port. A spool is slidably mounted in the bore and is movable between a fully open position, a fully closed position, and a plurality of partially open positions. A pilot microvalve is mounted within the bore and is configured to control the sliding movement of the spool by varying the flow of fluid therethrough. A seal is disposed in a groove formed in an outside surface of the spool such that when the spool is in the fully closed position the seal engages a wall of the bore, and when the spool is the fully open position or one of the partially open positions the seal does not engage the bore.

Abstract translation: 复合滑阀包括具有纵向孔的本体。 孔具有与流体入口端口和与流体出口端口流体连通的流体出口室流体连通的流体入口室。 阀芯可滑动地安装在孔中并且可在完全打开位置，完全关闭位置和多个部分打开位置之间移动。 引导微阀安装在孔内，并且构造成通过改变流体的流动来控制阀芯的滑动运动。 密封件设置在形成在阀芯的外表面中的凹槽中，使得当阀芯处于完全关闭位置时，密封件接合孔的壁，并且当阀芯是完全打开位置或部分打开 位置密封不接合孔。