Heat pump system having a pressure trip sensor recalculation algorithm controller
AssigneeLennox Industries Inc.
InventorsRakesh Goel, Eric Berg, Pete Hrejsa
Life of this patent
Estimating the term…
Abstract
One aspect presents an controller that comprises a control board, a microprocessor located on and electrically coupled to the control board, and a memory coupled to the microprocessor and located on and electrically coupled to the control board. The controller is configured to receive a trip signal from a refrigerant high pressure sensor and set a maximum heating % demand of the heat pump system based on the trip signal, recalculate a heating % demand based on at least one of the recalculated heating % demand or the maximum heating % demand.
Claims21
A heat pump (HP) system, comprising:
- an indoor blower/heat exchanger (ID) system;
- an outdoor fan/heat exchanger and compressor (OD) system, said ID system and said OD system being fluidly coupled together by refrigerant tubing that forms a refrigerant system;
- a refrigerant high pressure sensor located on said refrigerant tubing and configured to provide a trip signal of said refrigerant system when a discharge pressure of the OD system exceeds a pressure limit;
- and
- a controller coupled to said heat pump system and configured to:
- receive said trip signal from said refrigerant high pressure sensor;
- and
- set a maximum heating % demand of said heat pump system based on a first heating % demand, said first heating % demand being a heating % demand at the time of said trip signal;
- calculate a second heating % demand based on said maximum heating % demand;
- and
- cause said HP pump system to operate based on at least one of said second heating % demand or said maximum heating % demand.
A heat pump (HP) system controller, comprising:
- a control board;
- a microprocessor located on and electrically coupled to said control board;
- and
- a memory coupled to said microprocessor and located on and electrically coupled to said control board and having a compressor controller coupled to a compressor of an outdoor (OD) system of a HP system and being couplable to a refrigerant high pressure sensor of said HP system and configured to receive a trip signal from said refrigerant high pressure sensor when a discharge pressure of the OD system exceeds a pressure limit and set a maximum heating % demand of said heat pump system based on a first heating % demand, said first heating % demand being a heating % demand at the time of said trip signal, calculate a second heating % demand based on said maximum heating % demand, and cause said HP system to operate based at least one of said second heating % demand or said maximum heating % demand.
A computer program product, comprising a non-transitory computer usable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method of recalculating, measuring, and managing indoor airflow rate of a heat pump (HP) system, said method comprising:
- setting a maximum heating % demand of said HP system based on a first heating % demand, said first heating % demand being a heating % demand at the time of a trip signal, calculating a second heating % demand based on said maximum heating % demand, and causing said HP system to operate based on at least one of said second heating % demand or said maximum heating % demand.
Dependencies are inferred from the claim text.