Control system and method for reciprocating compressors
AssigneeWhirlpool Corporation
InventorsMarcos Guilherme Schwarz, Filipe Guolo Nazario
Life of this patent
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Abstract
The present invention relates to a control system for hermetic cooling compressor, which includes a reciprocating compressor (3) and an electronic control (2) for the reciprocating compressor (3), the electronic control (2) being configured for, after commanding the turning off of the reciprocating compressor (3), detecting whether the turn velocity (23) of the turning axle (10) is below a predefined velocity level, and then applying a braking torque (36) that causes deceleration of the turning axle (10) before completing the next turn of the turning axle (10), in case the turn velocity (23) detected is below the velocity level (34).
Claims20
-18. (canceled)
A reciprocating compressor (3) comprising:
- at least one mechanical assembly (12) comprising at least one compression mechanism (8) and one motor (9);
- and
- at least one electronic control (2);
- wherein the electronic control (2) is configured to detect a turn velocity (23) of the compression mechanism (8) and to apply a braking torque (36) to the mechanical assembly (12) during the stopping process of the compressor after detecting that the turn velocity (23) is below a predefined velocity value (34), the braking torque (36) being initiated at a next moment (35) after a compression stroke has been completed;
- and
- the breaking torque (36) being configured for gradual deceleration of the turn velocity (23) such that the turn velocity (23) of the compression mechanism (8) has zero value at the moment when the new compression stroke is about to begin.
A reciprocating compressor control method comprising:
- (a) detecting a turn velocity (23) of a mechanical assembly (12) that comprises at least a compression mechanism (8) and a motor (9);
- (b) comparing the turn velocity (23) with a predefined velocity value (34);
- and
- (c) applying a braking torque (36) for deceleration of the mechanical assembly (12) during the stopping process of the compressor after detecting that the turn velocity (23) is below a predefined velocity value (34), the braking torque (36) being initiated at a next moment (35) after a compression stroke has been completed;
- wherein step (c) is configured to cause gradual deceleration of the turn velocity (23) so that the turn velocity (23) of the compression mechanism (8) has zero value at the moment when a new compression stroke is about to begin.
A cooling compressor control system comprising:
- an electronic control (2);
- and
- a reciprocating compressor (3) comprising at least one mechanical assembly (12), which includes at least one compression mechanism (8) and a motor (9);
- wherein the electronic control (2) is configured to detect a turn velocity (23) of the compression mechanism (8) and to apply a braking torque (36) to the mechanical assembly (12) during the stopping process of the compressor after detecting that the turn velocity (23) is below a predefined velocity value (34), the braking torque (36) being initiated at a next moment (35) after a compression stroke has been completed;
- the braking torque (36) being configured for gradual deceleration of the turn velocity (23) such that the turn velocity (23) of the compression mechanism (8) has zero value at the moment when the new compression stroke is about to begin.
Dependencies are inferred from the claim text.