Compressor heating system
AssigneeTrane International Inc.
InventorsChuan Yan, Don Schuster, Drew Whitehurst
Life of this patent
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Abstract
A compressor heating system includes a compressor drive controller electrically coupled to an outdoor controller configured to selectively implement a pulse width modulation algorithm to deliver a pulsed direct current (DC) from the compressor drive controller to at least one stator winding of a motor of a variable speed compressor to provide heat to the compressor to prevent refrigerant migration to the compressor when the compressor remains idle with respect to operating in a cooling or heating mode.
Claims17
A compressor heating system, comprising:
- a compressor including a motor, wherein the motor includes a stator winding;
- a compressor drive controller electrically coupled to the compressor and configured to selectively provide a pulsed direct current (DC) to the stator winding of the motor of the compressor to impart heat into the compressor to prevent refrigerant migration to the compressor;
- and
- an outdoor unit controller electrically coupled to the compressor drive controller.
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a compressor heating system including:
- a compressor including a motor, wherein the motor includes a stator winding;
- a compressor drive controller electrically coupled to the compressor and configured to selectively provide a pulsed direct current (DC) to the stator winding of the motor of the compressor to impart heat into the compressor to prevent refrigerant migration to the compressor;
- and
- an outdoor unit controller electrically coupled to the compressor drive controller.
A method of heating a compressor of a heating, ventilation, and/or air conditioning (HVAC) system, the method comprising:
- providing a compressor heating system including a compressor, wherein the compressor includes a motor and wherein the motor includes a stator winding;
- providing a compressor drive controller electrically coupled to the compressor, and an outdoor unit controller electrically coupled to the compressor drive controller;
- selectively pulsing a direct current (DC) through the stator winding of the motor of the compressor to impart heat into the compressor to prevent refrigerant migration to the compressor;
- and,
- delivering DC from the compressor drive controller to the stator winding of the motor of the compressor.
Dependencies are inferred from the claim text.