Carrier Corporation

Trane International Inc.

Other

Carrier Corporation Carrier World Hdqrts.

Don Alan Schuster

Sathish R Das

Rajendra K Shah

Larry J Burkhart

Jonathan Edward Thrift

Raymond Walter Rite

Youssef A Jaber

Nathan Smith

Chuan Yan

Arvind Chitrala

Adeyemi A Adepetu

Larry D Burns

John Hughes

Karl J Mutchnik

Sivakumar Gopalnarayanan

Drew Whitehurst

Percy F Wang

Frederick J Keller, Jr

Ronald G Butcher

Hongmei Liang

Beth Robinson

Thomas Reed

Julio I Concha

Timothy J Perry

Timothy P Galante

Jeffrey L Jones

Lynn A Turner

Louis J Sullivan

Gary D Wedlake

Robert J Braun

Todd Kearney

Loren Dean Hoffman

Craig Kersten

Gary L Shultz, Jr

Jeffery A Storie

Adeyemi A Adeptu

Satish R Das

Hong Mei Liang

Logenthiran Vazhmuni

Prabakaran Chezhian

Hannah Exner

Zane Prince

Sabrina Kase

An embodiment of an outdoor unit for a climate control system includes a refrigerant compressor. In addition, the outdoor unit includes a plurality of refrigerant lines coupled to the refrigerant compressor. Further, the outdoor unit includes an enclosure positioned around the refrigerant compressor, wherein the enclosure includes an inner jacket and an outer jacket, the inner jacket being engaged with the outer jacket such that the inner jacket is configured to deform independently from the outer jacket to dissipate vibration emitted from the refrigerant compressor.

Sound and vibration damping enclosures for refrigerant compressors of climate control systems

Indicator disk

Methods and related systems for controlling an indoor air temperature for a heat pump system are disclosed. The method includes (a) determining an outdoor coil temperature of an outdoor heat exchanger and a speed of a compressor of a heat pump system, (b) determining a target indoor coil temperature of the indoor coil based on the outdoor coil temperature and the speed of the compressor, and (c) adjusting a speed of air flowing across the indoor coil based on a difference between a current indoor coil temperature and the target indoor coil temperature to reduce the difference between the current indoor coil temperature and the target indoor coil temperature.

Systems and methods for indoor air temperature control for heat pump systems

Methods and related systems for controlling indoor relative humidity include (a) determining a target dew point temperature based on desired indoor conditions for the indoor space, and (b) determining an initial dew point temperature based on an initial set of current indoor conditions of the indoor space. The method includes (c) determining a target coil temperature of a coil of an indoor heat exchanger of the climate control system based on the target dew point temperature and the initial dew point temperature, and (d) adjusting a speed of air flowing across the coil or a speed of a compressor of the climate control system after (c) based on the target coil temperature to reduce a difference between a coil temperature of the coil and the target coil temperature.

Systems and methods for controlling indoor humidity

Example embodiments of the present disclosure relate to a heat pump including a system or method for detecting a fault in the heat pump. Some embodiments include a method for detecting a switch over valve fault where the heat pump includes a refrigerant cycle, a compressor, a first heat exchanger, a second heat exchanger, and a switch over valve, and the method includes operating the HVAC system in one of a heating mode or a cooling mode, monitoring first, second, and third refrigerant parameters associated with the refrigerant circuit using first, second, and third refrigerant sensors, determining first and second refrigerant inputs based on the first, second, and third second refrigerant parameters, and determining a refrigerant circulation mode by comparing the first refrigerant input to the second refrigerant input to provide an indication of whether the refrigerant is circulating in the heating mode or the cooling mode.

Heat pump fault detection system

A sound level control system for a heating, ventilation, and air conditioning (HVAC) system is provided. The sound level control system comprises an outdoor unit with a compressor, an outdoor fan, and an outdoor controller and a communication device located at a predefined distance from the outdoor unit. The communication device measures sound levels in response to operating the outdoor unit. The outdoor controller is configured to receive a first noise level limit for a predefined time period, receive an instruction related to selective control of the outdoor unit, selectively control both of the compressor to rotate at a first compressor speed and the outdoor fan to rotate at a first fan speed based on the noise level limit for the predefined time period, and receive information related to whether a sound pressure level at a predefined location exceeds the first noise level limit for the predefined time period.

Limiting operation of a HVAC system for low-noise municipalities

Embodiments of vibration damping clips for use within a climate control system are disclosed. In an embodiment, a vibration damping clip is engaged with three fluid lines of an outdoor unit of the climate control system, such as, for instance, a suction line of a compressor of the climate control system, a discharge line of the compressor, and a fluid line coupled to a pressure equalization valve (PEV) within the outdoor unit.

Vibration damping clips for climate control systems

Methods and related systems for controlling superheat in a climate control system are disclosed. In an embodiment, the method includes (a) determining a superheat of a refrigerant downstream of a coil of a heat exchanger of the climate control system. In addition, the method includes (b) determining that an expansion valve upstream of the heat exchanger is fully open. Further, the method includes (c) adjusting a speed of air flowing across the coil or a speed of a compressor of the climate control system after (b) based on the determination in (a) to control the superheat of the refrigerant.

Systems and methods for controlling superheat in a climate control system

A two temperature electronic expansion valve control for variable speed compressors that utilizes a correlation between airflow percentage and heat exchanger pressure drop to control the operation of an expansion valve. An indoor airflow percentage request may be communicated from an outdoor controller to an air handler controller. Using a correlation between airflow percentage and pressure drop across the heat exchanger, the airflow percentage may be used in predicting an outlet pressure of refrigerant exhausted from the heat exchanger. The predicted pressure drop may be used in determining a saturated temperature for the exhausted refrigerant. The determined saturated temperature may be compared to a sensed temperature of the refrigerant at the outlet of the heat exchanger to determine a superheat value, which is compared to a reference superheat value in determining the degree to open or close the expansion valve.

HVAC system with electronically controlled expansion valve

A method for determining system subcooling in a vapor compression system including a compressor, a condenser, an expansion device and an evaporator operatively connected in a serial relationship in a refrigerant flow circuit, the method including receiving information indicative of a compressor torque or compressor current; and determining a degree of system subcooling in response to the receiving of the information.

Discharge pressure calculation from torque in an HVAC system

Systems and methods are disclosed herein that include controlling operation of a heating, ventilation, and/or air conditioning (HVAC) system that utilizes information from a plurality of temperature sensors to monitor, verify, determine, and/or discover whether a temperature sensor is properly located in proximity to a dome of a compressor of the HVAC system. When the HVAC system determines that the temperature sensor associated with the dome of the compressor is not properly located, the HVAC system may initiate a shutdown of the compressor and/or other components of the HVAC system, generate a signal, present a message, and/or otherwise provide a notification of the improper temperature sensor placement, and/or reduce a runtime of the compressor, operate the compressor at a lower speed, reduce a power consumption of the compressor, and/or otherwise control the compressor and/or associated components to effectuate a reduced compressor dome temperature.

System and method for a compressor dome temperature sensor location verification

Systems and methods for determining the health of a compressor are disclosed. In one embodiment, a prognostic-diagnostic unit (PDU) compares expected compressor power consumption, based on current operating conditions of the HVAC system, to actual compressor power consumption. If the actual power consumption is within a predefined range of the expected power consumption under current operational conditions, the HVAC system is determined to be operating properly. If the actual power consumption deviates from the expected power consumption, a fault is indicated. An appropriate action is taken, such as displaying a fault alert, transmitting a fault message to another device, and storing information relating to the fault for later retrieval to assist troubleshooting.

HVAC compressor prognostics

A compressor heating system includes a compressor drive controller electrically coupled to an outdoor controller configured to selectively implement a pulse width modulation algorithm to deliver a pulsed direct current (DC) from the compressor drive controller to at least one stator winding of a motor of a variable speed compressor to provide heat to the compressor to prevent refrigerant migration to the compressor when the compressor remains idle with respect to operating in a cooling or heating mode.

Compressor heating system

A power factor optimized variable speed drive unit for an electric motor of an HVAC device is disclosed. In an embodiment, the unit includes a selectively-activatable power factor correction unit operatively associated with a switched mode power supply unit. A power measurement unit measures the input power of the electric motor. A comparator unit compares the motor input power to a predetermined threshold. The comparator unit activates the power factor correction unit when the input power of the electric motor is above the threshold, and deactivates the power factor correction unit when the input power of the electric motor falls below the threshold. In an embodiment, motor input power is determined by the product of motor load current and motor speed.

HVAC components having a variable speed drive with optimized power factor correction

Growing community of inventors

Lindale, TX, United States of America

Don Alan Schuster