Dunan Microstaq, Inc.

Zhejiang Dunan Hetian Metal Co., Ltd.

Arvind Rao

Parthiban Arunasalam

Wayne Curtis Long

Dhaman Kumar Besarla

Gengxun Kara Gurley

Chen Yang

Buu C Chung

Joe Albert Ojeda, Sr

E Nelson Fuller

Joseph Nguyen

Colin B Bingle

Kevin C Sinkar

Jennifer O'Keefe

Fadi Alsaleem

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.

Apparatus for calibrating and testing multiple superheat controllers

A system for controlling fluid pressure to a transmission system through a MEMS microvalve includes a transmission controller configured to receive a target command pressure, a current system command pressure input signal, and a transmission system operating temperature. A power determination module determines a temperature-related power factor from the target command pressure, the current system command pressure input signal, the transmission system operating temperature received in the controller, and a look-up table within the controller. A power signal module adjusts the current system command pressure input signal by the temperature-related power factor and applies the adjusted current system command pressure input signal to the MEMS microvalve via the controller.

Open loop control system for a MEMS microvalve

A method of maintaining a fluid flow rate in a heating, ventilating, air conditioning, and refrigeration (HVAC-R) system while maintaining superheat in the HVAC-R system at a desired level includes: continuously measuring an operating fluid temperature of the HVAC-R system and calculating superheat at a pre-determined rate, determining if the calculated superheat is stable, measuring and recording an operating fluid pressure of the system each time the calculated superheat is stable, recording an average operating fluid pressure each subsequent time the superheat is stable, calculating an output PWM and reducing fluid flow through a metering valve when an actual PWM is greater than the calculated output PWM by adjusting a PWM signal to a microvalve in the metering valve, and increasing fluid flow through the metering valve when the actual PWM is less than the calculated output PWM by adjusting the PWM signal to the microvalve.

Method of maintaining the flow rate of a refrigerant while maintaining superheat

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.

Test equipment arrangement having a superheat controller

A system for controlling one or more structural appliances, such heating, cooling, and ventilation sensor systems utilizing cloud computing architecture, includes at least one intelligent controller, a local intelligent gateway in communication with the intelligent controller, and a cloud computing network in communication with the local intelligent gateway. A local device is operative to communicate through the cloud computing network to the intelligent controller.

Apparatus and method for controlling heating, cooling, and refrigeration sensor systems utilizing the wireless cloud

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.

Method of preventing clogging in a microvalve

A system for controlling the flow of a fluid from a source to a load includes a source. An on/off type of control valve communicates with the source. A micro-electric mechanical system communicates with the on/off type of control valve. A consuming device communicates with the micro-electric mechanical system. An electronic controller that communicates with the consuming device and the source. The electronic controller measures a change in a parameter of the micro-electric mechanical system that results from the flow of fluid through the micro-electric mechanical system to sense a flow of fluid through a micro-electric mechanical system.

Microvalve with integrated flow sensing capability

A controller device and a method for controlling a system that utilizes an adaptive mechanism to self-learn the system characteristics and incorporates this adaptive self-learning ability to predict a control parameter correctly to provide precise control of a system component.

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Austin, TX, United States of America

Arvind Rao