SEMI-HERMETIC COMPRESSOR MOTOR FOR AMMONIA SERVICE

• Main Authors: NEMIT, Paul, Jr, HARRINGTON, Dennis Andrew, HUBER, Paul A
• Format: Patent
• Language: English; French; German
• Published: 29.08.2018
• Subjects: BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

A semi-hermetic compressor (40) comprising a compressor portion (14) and a motor (12) encased in a housing portion (16); the compressor portion (14) configured to compress a working fluid (24), wherein the working fluid is ammonia, and being driven by the motor (12); the motor (12) comprising a plurality of insulated copper wires (22); the plurality of insulated copper wires (22) forming a stator (20) of the motor (12) and extending from the stator (20) within an interior of the housing portion (16) to an exterior of the housing portion (16) through an annular pass-through assembly (30) mounted in the housing portion (16); and the pass-through assembly (30) comprising a base portion (28), a first isolation portion (26), a second isolation portion (42), and a cap portion (40); wherein the base portion (28) forms an airtight seal between the housing portion (16) and an external periphery of the base portion (28); each of the first and second isolation portions (26, 42) comprising at least one aperture for receiving and compressing an insulated copper wire (22) passing through the base portion (28).