Refrigeration mechanical diagnostic protection and control device
OwnerGeorge Tracey, Shawn Sullivan +1inventors
InventorsGeorge Tracey, Shawn Sullivan, George Holstein
Life of this patent
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Abstract
In vapor compression refrigeration systems a mechanism and method are provided for protecting a compressor from failures related to lack of superheat, loss of lubricating oil and other system malfunctions. Also provided is a mean of monitoring system conditions and providing service personnel with a quick manner of diagnosing problems.
Claims15
A cooling system including a compressor, a condenser having a fan motor and a heat exchange coil, and an evaporator with refrigerant flowing through the system, an outside ambient temperature sensor for determining outside ambient temperature, and a device for constantly calculating sub-cooling of the refrigerant and determining when the sub-cooling is below a predetermined level at a given ambient temperature, and generating a signal representative of the determined sub-cooling.
A cooling system including a compressor, a condenser having a fan motor and an exvaporator with refrigerant flowing through the system, an outside ambient temperature sensor for determining outside ambient temperature, and a fan limiting device constructed and arranged to cycle the condenser fan motor at ambient temperatures below a predetermined temperature level to thereby maintain a substantially constant pressure on the refrigerant flowing through the cooling system.
Dependencies are inferred from the claim text.