Dunan Microstaq, Inc.

Dhaman Kumar Besarla

Parthiban Arunasalam

Arvind Rao

Gengxun Kara Gurley

Kevin C Sinkar

Joe Albert Ojeda, Sr

E Nelson Fuller

Wayne Curtis Long

Chen Yang

Colin B Bingle

Eric S Shea

An electronically switchable, bi-stable two-port valve includes a sleeve, a first pole piece having air flow passages formed therethrough and a first wire-wound coil mounted therein and connected to a source of electrical power, a second pole piece having air flow passages formed therethrough and a second wire-wound coil mounted therein and connected to the source of electrical power, and a permanent magnet defining an armature and movably mounted between the first and second pole pieces. The first pole piece is mounted in a first end of the sleeve and the second pole piece is mounted in a second end of the sleeve.

Bi-stable two-port valve

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.

Heating, ventilating, air conditioning, and refrigeration system with simultaneous sub-cooling and superheat control

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 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.

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Leander, TX, United States of America

Dhaman Kumar Besarla