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：US10760836B2

公开(公告)日：2020-09-01

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

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：US10145594B2

公开(公告)日：2018-12-04

申请号：US15399792

申请日：2017-01-06

Applicant: DunAn Microstaq, Inc.

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

IPC: F25B41/06

Abstract: A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. The second stage spool assembly includes a sleeve and a spool slidably mounted within the sleeve.

公开(公告)号：US20170219259A1

公开(公告)日：2017-08-03

申请号：US15399792

申请日：2017-01-06

Applicant: DunAn Microstaq, Inc.

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

IPC: F25B41/06 ,  F16K27/04 ,  F16K31/124

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

Abstract: A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. The second stage spool assembly includes a sleeve and a spool slidably mounted within the sleeve.

公开(公告)号：US20170082336A1

公开(公告)日：2017-03-23

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

CPC classification number: G01N25/00 ,  G01M99/008

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.