Carrier Corporation

Jun Pyo Lee

Daniel J Dempsey

Sheng Li

Sathish R Das

Xinyu Wu

Marcin Cychowski

Xing Cai

Kevin B Mercer

Larry D Burns

Stella M Oggianu

Charles A Cluff

Asad M Sardar

Runfu Shi

Keyu Li

Wei Zhou

Matthew Clark

Everett Lumpkin

Mathew Gervais

Charles A Seymour

Sherri R Wilkerson

Dennis J Blessing

Brooke Greenwood

A refrigeration system configured for controlling operation of a compressor is disclosed. The refrigeration system comprises an electronic expansion device operatively coupled with the compressor. The refrigeration system comprises a controller operatively coupled with the electronic expansion device. The controller is configured to control the electronic expansion valve based on a superheat setpoint range. The controller is further configured to adjust the superheat setpoint range in response to an operating point of the compressor being within a threshold distance from a boundary of an operational envelope for the compressor.

Systems and methods for active compressor control

A method of heating a component within a heating, ventilation and air conditioning (HVAC) system is provided. The method includes maintaining a non-heating condition of the HVAC system component when the HVAC system component is in a non-operational state. The method also includes determining when the HVAC system component will switch from the non-operational state to an operational state, the determination based on a threshold parameter being met. The method further includes operating a heating device from the non-heating condition to a heating condition to heat the HVAC system component from a temperature to a target temperature suitable for the operational state of the HVAC system component.

HVAC heating system and method

A grommet assembly includes a bolt assembly that has a head portion. A grommet includes a tapering bolt opening for accepting the bolt assembly. A projecting portion extends from a body portion and has an overhang adjacent a distal end. The bolt opening at least partially defines a radial gap between the grommet and the bolt assembly. The head portion of the bolt assembly is spaced from the distal end of the projecting portion by an axial gap.

Vibration reducing grommet

A self-adaptive smart setback heating, ventilation and air conditioning (HVAC) control system includes an HVAC unit configured to deliver at least one of heated air and cooled air to a target area. A temperature sensor determines a current internal air temperature (IAT) of the target area. An HVAC controller is in signal communication with the HVAC unit and the temperature sensor. The HVAC controller selectively operates in an active mode and a setback mode. The active mode controls the HVAC unit based on a first temperature setpoint value, and the setback mode controls the HVAC unit based on a second temperature setpoint value different from the first temperature setpoint value. The HVAC controller includes an electronic temperature setback unit that is configured change the IAT during the setback mode based on an actively determined upcoming temperature recovery rate.

Self-adaptive smart setback control system

A heating, ventilation, and air conditioning (HVAC) energy management control system includes an HVAC system configured to deliver at least one of heated air and cooled air to a targeted area; and a computing server including an HVAC energy analytics engine in signal communication with the HVAC system. The HVAC energy analytics engine is configured to actively learn historical data of the HVAC system based on at least one of the heated air and the cooled air produced over a time period. The HVAC energy analytics engine determines a predicted energy consumption of the HVAC system based on the historical data, and the HVAC system operates based on the predicted energy consumption.

HVAC system including energy analytics engine

A method of operating a variable speed compressor, the variable speed compressor in electrical communication with a computing element and the computing element in electrical communication with a sensing device, the method including operating the computing element to transmit a control signal to the compressor to operate in an operational mode, operating the computing element to receive outdoor air temperature data from the sensing device, operating the computing element to determine an operational run time value of the compressor based in part on the outside air temperature data, operating the computing element to determine an estimated day period based in part on the control signal, and operating the compressor at an operational speed based in part on the outdoor air temperature data, the operational run time value, and the estimated day period.

System and method for operating a variable speed compressor

A system and method of determining duct leakage in an HVAC system including an HVAC unit assembly operably coupled to a system controller, the method including operating the system controller to determine system leakage data, operating the system controller to determine supply leakage data, and operating the system controller to determine a duct leakage measurement based in part on the system leakage data and the supply leakage data.

System and method for determining duct leakage in a HVAC system

A method of operating an air conditioning system including: operating a refrigerant compression device at a demand speed to circulate refrigerant through a refrigeration circuit; monitoring, using a temperature sensor, a temperature of external ambient air; monitoring, using a pressure sensor, a pressure of the refrigerant within the refrigerant circuit; detecting, using a controller, when the temperature of external ambient air is greater than a selected temperature; detecting, using the controller, when the pressure of the refrigerant is greater than a selected pressure; and reducing the speed of the refrigerant compression device to a selected speed for a first duration of time when the temperature of external ambient air is greater than the selected temperature and the pressure of the refrigerant is greater than the selected pressure.

High outdoor ambient and high suction pressure oil pump out mitigation for air conditioners

A system and method for determining proper operation of an HVAC system by generating a test condition, operating the HVAC system in a heating or cooling mode for either an operational duration of time or until a first indoor air temperature change limit is achieved, if the test condition is satisfied, determining whether the HVAC system is performing at an operational tolerance level, and generating an alert signal if the HVAC system is not performing at the operational tolerance level.

System and method of determining proper operation of an HVAC system

A system and method of measuring duct leakage in an HVAC system including an indoor unit assembly operably coupled to a processing device, wherein at least one supply air conduit, and at least one return air conduit are coupled to the indoor unit assembly by operating a blower system at a nominal airflow rate, restricting airflow in each of the at least one supply air conduits, and each of the at least one return air conduits; operating the blower system, within the indoor unit assembly, at a first airflow rate; and operating the processing device to calculate a duct leakage airflow and duct leakage measurement.

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Zionsville, IN, United States of America

Jun Pyo Lee