Method and system for controlling compressor temperature
OwnerCharles A. Cluffinventor
Life of this patent
Estimating the term…
Abstract
A method for controlling the temperature of a compressor having a motor including a rotor and a stator, and a control assembly operably coupled to the compressor, the method comprising the steps of: applying an initial current to the compressor motor; measuring a voltage across the compressor motor and determining a resistance of the compressor motor based on the initial current and a measured voltage; determining whether the determined resistance is less than or equal to a desired resistance; applying a secondary current to the compressor motor if the determined resistance is less than or equal to the desired resistance.
Claims19
A method for heating a compressor when the compressor is off, the compressor having a motor including a rotor and a stator, and a control assembly operably coupled to the compressor, the method comprising the steps of:
- applying an initial current to the compressor motor when the compressor is off;
- measuring a voltage across the compressor motor and determining a resistance of the compressor motor based on the initial current and a measured voltage, the determined resistance corresponding to a temperature of the compressor;
- determining whether the determined resistance is less than or equal to a desired resistance, the desired resistance corresponding to a desired temperature;
- and
- applying a secondary current to the compressor motor if the temperature is less than or equal to the desired temperature.
A vapor compression system comprising:
- a compressor, having a motor including a rotor and a stator;
- a control assembly operably coupled to the compressor motor, the control assembly configured to:
- apply an initial current to the compressor motor when the compressor is off;
- measure a voltage across the compressor motor and determine a resistance of the compressor motor based on the initial current and the measured voltage the determined resistance corresponding to a temperature of the compressor;
- determine whether the determined resistance is less than or equal to a desired resistance the desired resistance corresponding to a desired temperature;
- and
- apply a secondary current to the compressor motor if the temperature is less than or equal to the desired temperature.
A control assembly comprising:
- at least one connection configured to attach to a component;
- a control device operably coupled to the at least one connection, the control device configured to:
- apply an initial current to the component when the compressor is off;
- measure a voltage across the component and determine a resistance of the component based on the initial current and the measured voltage the determined resistance corresponding to a temperature of the compressor;
- determine whether the determined resistance is less than or equal to a desired resistance, the desired resistance corresponding to a desired temperature;
- and
- apply a secondary current if the temperature less than or equal to the desired compressor.
Dependencies are inferred from the claim text.