公开(公告)号：US10648719B2

公开(公告)日：2020-05-12

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 ,  F25B40/02 ,  F25B41/04

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：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.