System and method for monitoring charge level of HVAC system
AssigneeJohnson Controls Tyco IP Holdings LLP
InventorsTyler P. McCune, Shawn A. Hern, Aneek M. Noor, Cody J. Kaiser, Drew H. Carlton
Life of this patent
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Abstract
A heating, ventilation, and/or air conditioning (HVAC) system includes a sensor configured to detect an operating parameter of the HVAC system, a processor, and a memory having instructions executable by the processor to cause the processor, during a normal operation mode of the HVAC system, to iteratively receive feedback from the sensor indicative of a value of the operating parameter, compare the value with reference data, and determine a refrigerant charge level of the HVAC system based on the value and the reference data.
Claims22
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a sensor configured to detect an operating parameter of the HVAC system;
- a processor;
- and
- a memory including instructions executable by the processor to cause the processor, during a normal operation mode of the HVAC system, to iteratively:
- receive feedback from the sensor indicative of a value of the operating parameter;
- compare the value with a reference data point;
- determine a refrigerant charge level of the HVAC system based on the value and the reference data point;
- and
- update the reference data point to an updated reference data point based on comparing the value with the reference data point.
A non-transitory computer readable storage medium for a heating, ventilation, and/or air conditioning (HVAC) system comprising instructions that, when executed by a processor, are configured to cause the processor, during a normal operation mode of the HVAC system, to:
- receive an input indicative of an operating parameter value of the HVAC system from a sensor of the HVAC system for a plurality of iterations;
- correlate the operating parameter value to a reference data point determined in testing of the HVAC system;
- compare the operating parameter value to the reference data point for the plurality of iterations;
- determine a refrigerant charge level of the HVAC system based on correlation of the operating parameter value and the reference data point for the plurality of iterations;
- and
- update the reference data point to an updated reference data point based on comparison of the operating parameter value to the reference data point in the plurality of iterations.
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a plurality of sensors, wherein each sensor of the plurality of sensors is configured to detect a respective operating parameter of a plurality of operating parameters of the HVAC system;
- and
- a controller configured to, during a normal operation mode of the HVAC system, iteratively:
- receive feedback from the plurality of sensors, wherein the feedback includes a respective value associated with each operating parameter of the plurality of operating parameters of the HVAC system;
- compare each value with respective reference data;
- determine that first feedback from a first sensor of the plurality of sensors is indicative of a first deviation of a value of a particular operating parameter from a corresponding reference data point;
- determine whether the first deviation is caused by a second deviation of a current refrigerant charge level from an expected refrigerant charge level based on second feedback from a second sensor of the plurality of sensors;
- and
- determine the current refrigerant charge level of the HVAC system based on the first deviation in response to a determination that the first deviation is caused by the second deviation.
Dependencies are inferred from the claim text.