Cost-effective remote monitoring, diagnostic and system health prediction system and method for vapor compression and heat pump units based on compressor discharge line temperature sampling
First Claim
1. A monitoring system for at least one vapor-compression system having an outdoor section comprised of a compressor and a condenser, wherein the monitoring system comprises three sensors associated with only the outdoor section, one of the sensors being a current measuring sensor and two of the sensors being voltage measuring sensors, so that a processed output of measured values of the current and voltage sensors in only the outdoor section is able by itself to predict failed or improper compressor operation based on a comparison of one of a previously obtained measured performance curve, a table of values and an equation, each as a function of outdoor ambient air temperature obtained during normal operation of the vapor-compression system, in relation to the measured current and voltage sensor values.
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Abstract
A diagnostic monitoring system and method is employed for one or more vapor compression systems such as air conditioners and heat pumps having a compressor, an indoor air handler fan coil and an outdoor condensor. Temperature, voltage and current sensors are provided at the outdoor condensor to determine that at least one vapor compression system is operating properly. Data obtained from the sensors is wirelessly transmitted to a receiving-device for use by the systems'"'"' custodian or repair service provider and includes information concerning an occurrence of periods when one or more of the vapor compression systems are operating at an abnormal state.
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Citations
7 Claims
- 1. A monitoring system for at least one vapor-compression system having an outdoor section comprised of a compressor and a condenser, wherein the monitoring system comprises three sensors associated with only the outdoor section, one of the sensors being a current measuring sensor and two of the sensors being voltage measuring sensors, so that a processed output of measured values of the current and voltage sensors in only the outdoor section is able by itself to predict failed or improper compressor operation based on a comparison of one of a previously obtained measured performance curve, a table of values and an equation, each as a function of outdoor ambient air temperature obtained during normal operation of the vapor-compression system, in relation to the measured current and voltage sensor values.
Specification