Electrical monitoring of refrigerant circuit
AssigneeJohnson Controls Technology Company
InventorsJay C. Walser, James C. Perkins
Life of this patent
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Abstract
A leak detection system for heating, ventilating, and air conditioning (HVAC) equipment includes a refrigerant circuit, where the refrigerant circuit includes tubing configured to couple components in the refrigerant circuit and where the tubing is configured to enclose a refrigerant flowing throughout the refrigerant circuit. The leak detection system further includes a processor coupled to the tubing of the refrigerant circuit, where the processor is configured to detect a variation in physical geometry of the tubing by comparing the measured electrical property to a baseline measurement.
Claims25
A leak detection system for heating, ventilating, and air conditioning (HVAC) equipment, comprising:
- a refrigerant circuit, wherein the refrigerant circuit comprises tubing configured to couple components in the refrigerant circuit, wherein the tubing is configured to enclose a refrigerant flowing throughout the refrigerant circuit;
- and
- a processor coupled to the tubing of the refrigerant circuit, wherein the processor is configured to detect a variation in physical geometry of the tubing by comparing the measured electrical property to a baseline measurement.
A system of leak detection for heating, ventilating, and air conditioning (HVAC) equipment, comprising:
- a broadcaster configured to transmit current across tubing of the HVAC equipment;
- a receiver configured to receive electric signals indicative of a measured electrical property of the tubing;
- and
- a processor configured to analyze the measured electrical property of the tubing and detect a variation in physical geometry of the tubing by comparing the measured electrical property to a baseline value of the measured electrical property.
A method for detecting variation in geometry for tubing in a heating, ventilation, and air conditioning (HVAC) system, comprising:
- transmitting current across tubing, wherein the tubing is configured to transmit a refrigerant therethrough;
- detecting a measured electrical property of the tubing;
- and
- comparing the measured electrical property with a threshold value of the measured electrical property to identify a variation of physical geometry of the tubing.
Dependencies are inferred from the claim text.