Copeland Corporation

Michael A DiFlora

Jeffery D Ramsey

James M Brown

Steven Lee Rice

A valve plate for a motor compressor has a continuously smooth figure-eight shaped port for reducing stresses along the primary longitudinal axis of a reed valve associated with the port, and an arrangement for providing a mechanical interlock for a head gasket to inhibit pressure loss between adjacent compressor cylinders.

Compressor valve assembly

A retention arrangement for retaining a motor cover and a thermal protection device over one end of a dynamoelectric motor uses connection bolts already available on the motor for mounting the stator and positions the protector in an annulus between the cover side wall and stator end turns and below the upward extension of the stator end turns. The retention arrangement includes a pair of plates being bolted to the motor and encircling the end turns of the stator with first interengageable portions securing the cover to the plates and second interengageable portions securing at least one plate to a holder to which the protector is mounted, such retention assuring that after the air space between the stator and rotor is set a suction duct will be positioned to cool the protection device and the end turns.

Thermally protected hermetic motor compressor

There is disclosed herein an improved motor protection assembly for a motor compressor comprising a motor cover having an opening provided on a side wall thereof adjacent the exposed end turns of the motor stator windings. A motor protection device is adjustably secured to the motor cover and projects through the opening into engagement with a portion of the stator windings so as to enable sensing of abnormal conditions existing within these windings. The motor protection device is electrically connected to the stator windings so as to de-energize the windings in response to such abnormal sensed condition. The adjustable securing arrangement allows the axial positioning of the motor protection device within the opening to be varied thereby enabling a standard motor cover to be used with stator windings of different sizes and different manufacturers.

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Sidney, OH, United States of America

Michael A DiFlora