Degradation sensing and shut-down means for refrigeration motor-compressor units

Patent · Tue Nov 12 04:00:00 EST 1985

OSTI ID:5689917

Vogel, R E; Bowsky, B

Means for continuously shutting-down operation of an enclosed motor-compressor unit upon predetermined contamination of the refrigerant-oil mixture therein by conductive particles which comprises providing a normally open switch in the motor energizing circuit operated to a closed position by a sensitive D.C. relay when energized, in immersing a pair of spaced electrodes in the refrigerant-oil mixture, connecting the electrodes across an A.C. power source, connecting the D.C. relay in parallel with the electrodes across the A.C. power source through rectifying and voltage dropping means and in providing a fusible link in the A.C. power source connections so as to be responsive to a predetermined sum of current flow across the electrodes plus through the relay to break the connections, and in the provision of a normally open fusible switch responsive to fuse and close in response to a predetermined high motor temperature and through relay means open a second normally closed switch to break also the motor energizing circuit.

• Assignee: Emerson Electric Co.
• Patent Number(s): US 4551984
• OSTI ID: 5689917
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
ALTERNATING CURRENT
COMPRESSORS
CURRENTS
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTRONIC CIRCUITS
ENERGY SOURCES
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUELS
MOTORS
OPERATION
PETROLEUM
POWER CONDITIONING CIRCUITS
REFRIGERANTS
REFRIGERATORS
RELAYS
START-UP
SWITCHES
WORKING FLUIDS