Tyco Fire + Security Gmbh

Johnson Controls Tyco IP Holdings Llp

Johnson Controls Light Commercial IP Gmbh

Jeremy Ryan Smith

Shawn A Hern

Tyler P McCune

Cody J Kaiser

Tejas Mahendra

Narendra Madhukar Jagtap

Andrew Michael Boyd

Aneek Muhammad Noor

Andrew Leroy Hjortland

Theresa Thy N Gillette

Aneek M Noor

Cameron S Noggle

Naveen Ramanagouda Patil

Thomas John Martin

Pushpak Macchindra Doiphode

Ewin Ramster Melwin

Rahul Krushna Salunke

Pushpak Doiphode

Rahul Salunke

A heating, ventilation, and/or air conditioning (HVAC) system includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive data indicative of an operating parameter of the HVAC system, determine an upper suction pressure limit of the HVAC system based on the data, determine a lower suction pressure limit of the HVAC system based on the data, determine a target suction pressure value, wherein the target suction pressure value is less than or equal to the upper suction pressure limit and is greater than or equal to the lower suction pressure limit, and modulate operation of the variable capacity compressor such that a detected suction pressure of the HVAC system approaches the target suction pressure value.

System and method for operating a compressor of an HVAC system

A heat pump includes a working fluid circuit configured to circulate a working fluid therethrough. The working fluid circuit includes a first heat exchanger, a second heat exchanger, a compressor, and an expansion valve. The first heat exchanger is configured to exchange heat between the working fluid and a supply air flow, and the second heat exchanger is configured to exchange heat between the working fluid and an ambient air flow. The heat pump also includes a bypass circuit configured to direct a portion of the working fluid from the compressor to the second heat exchanger, a bypass valve configured to control a flow of the portion of the working fluid along the bypass circuit, and a controller configured to receive data indicative of a measured value of an operating parameter associated with formation of frost on the second heat exchanger and to control a position of the bypass valve based on a comparison of the measured value with a baseline value of the operating parameter.

Heat pump systems and methods with frost mitigation

An energy efficient heating, ventilation, and air conditioning (HVAC) system includes a variable capacity compressor configured to operate at a plurality to operating capacities and a control system communicatively coupled to the variable capacity compressor. The control system is configured to receive data indicative of a temperature within a conditioned space, receive data indicative of a set point temperature of the conditioned space, initialize operation of the variable capacity compressor, and ramp up operation of the variable capacity compressor to an intermediate operating capacity of the plurality of operating capacities during initial operation of the variable capacity compressor, where the intermediate operating capacity is less than a full operating capacity of the plurality of operating capacities.

Energy efficient HVAC system with variable capacity start up control

An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system includes a working fluid circuit and a first conduit of the working fluid circuit, where the first conduit extends between a first heat exchanger and a second heat exchanger of the working fluid circuit. The energy efficient heat pump also includes a compressor disposed along the working fluid circuit, where the compressor is configured to direct a working fluid along the working fluid circuit, and the compressor includes a suction port and an injection port. The energy efficient heat pump further includes an injection conduit extending from the first conduit to the injection port of the compressor, where the injection conduit includes an expansion device, and the injection conduit is configured to direct a portion of the working fluid from the working fluid circuit, through the expansion device, and to the injection port.

Energy efficient heat pump systems and methods

A heating, ventilation, and/or air conditioning (HVAC) system includes a compressor, a fan, an inverter configured to drive operation of the compressor, and a controller communicatively coupled to the fan and the inverter. The controller includes a tangible, non-transitory, computer-readable medium with computer-executable instructions that, when executed by processor circuitry, are configured to cause the processor circuitry to determine an operating parameter of the fan in response to an interruption in receiving communication signals from the inverter and operate the fan based on the operating parameter during the interruption.

Systems and methods for communication in HVAC system

An energy efficient heat pump includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive a call for heating, determine an upper discharge pressure limit of the energy efficient heat pump, determine a lower discharge pressure limit of the energy efficient heat pump, determine a target discharge pressure value, where the target discharge pressure value is less than or equal to the upper discharge pressure limit and is greater than or equal to the lower discharge pressure limit, and modulate operation of the variable capacity compressor such that a detected discharge pressure of the heat pump approaches the target discharge pressure value.

System and method for operating a compressor of an energy efficient heat pump

A heating, ventilation, and/or air conditioning (HVAC) system includes a control system, a storage of the control system that stores instructions and a set of operating conditions of the HVAC system, and processor circuitry of the control system. One or more operating conditions of the set of operating conditions is associated with a respective operational sound level, and the processor circuitry is configured to execute the instructions to receive a threshold sound level and operate the HVAC system according to an operating condition of the set of operating conditions based on an operational sound level of the operating condition being less than or equal to the threshold sound level.

Systems and methods to operate an HVAC system based on sound level

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Park City, KS, United States of America

Jeremy Ryan Smith