Automatic blower control
AssigneeLennox Industries Inc.
InventorHarold Gene Havard, JR.
Life of this patent
Estimating the term…
Abstract
A blower unit controller and an HVAC system are disclosed herein. In one embodiment, the blower unit controller includes: (1) an input configured to receive motor operating parameters, (2) an output configured to provide a motor speed control signal to an inverter, (3) a memory configured to store a mathematical model of airflow produced by a blower motor, the mathematical model being configured to relate a motor speed to the motor operating parameters and (4) a processor configured to produce the speed control signal based on the mathematical model.
Claims20
A blower unit controller, comprising:
- an input configured to receive motor operating parameters;
- an output configured to provide a motor speed control signal to an inverter;
- a memory configured to store a mathematical model of airflow produced by a blower motor, the mathematical model being configured to relate a motor speed to said motor operating parameters;
- and
- a processor configured to produce said speed control signal based on said mathematical model.
A heating, ventilation, and air conditioning (HVAC) system, comprising:
- a blower configured to generate an airstream for said HVAC system;
- a blower motor mechanically connected to said blower;
- an inverter in electrical communication with said blower motor and configured to provide a motor drive signal to said blower motor;
- and
- a blower unit controller, including:
- an input configured to receive motor operating parameters associated with said blower motor;
- an output configured to provide a motor speed control signal to said inverter;
- a memory configured to store a mathematical model of airflow produced by a fan motor, the mathematical model being configured to relate a motor speed to said motor operating parameters;
- and
- a processor configured to produce said speed control signal based on said mathematical model.
A blower unit controller for a heating, ventilation and air conditioning (HVAC) system, comprising:
- an interface configured to receive motor operating parameters associated with a blower motor of said HVAC system and provide a motor speed control signal to an inverter in electrical communication with said blower motor;
- and
- an air flow calculator configured to produce said speed control signal based on said motor operating parameters and a mathematical model of airflow produced by a fan motor, the mathematical model being configured to relate a motor speed to said motor operating parameters.
Dependencies are inferred from the claim text.