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AssigneeCarrier Corporation
InventorsPengju Kang, Alan Finn, Sivakumar Gopalnarayanan, Dong Luo, Timothy Galante
Estimating the term…
The sufficiency of refrigerant charge in an air conditioning system is determined by a comparison of two sensed temperatures in the system, one being the liquid line temperature and the other being either the outdoor temperature or the condenser coil temperature. In one embodiment the two sensed temperatures are displayed on respective thermochromic strips which are so calibrated and juxtaposed as to provide a visual indication, by the relative positions of the two displayed sensed temperatures, as to whether the refrigerant charge is adequate. In another embodiment, the sensed liquid line temperature is displayed by way of a plurality of LEDs and the other temperature is displayed by way of a marker on a temperature scale. If the two displayed temperatures are aligned, then the refrigerant charge is optimized, and if they are not aligned, the system is undercharged or overcharged.
A method of determining the sufficiency of refrigerant charge in a refrigeration system having a compressor, a condenser, an expansion device and an evaporator fluidly connected in serial refrigerant flow relationship comprising the steps of:
Apparatus for indicating the sufficiency of refrigerant charge in a refrigeration system having a compressor, a condenser, an expansion device and an evaporator fluidly connected in serial refrigerant flow relationship comprising:
Apparatus for indicating the sufficiency of refrigerant charge in a refrigeration system having a compressor, a condenser, an expansion device and an evaporator fluidly connected in serial refrigerant flow relationship comprising:
Dependencies are inferred from the claim text.