Compressor having sound control system
AssigneeEmerson Climate Technologies, Inc.
InventorJacob A. Groshek
Life of this patent
Estimating the term…
Abstract
A climate-control system may include a compressor and a control module. The compressor includes a motor driving a compression mechanism to compress a working fluid. The control module is in communication with the motor and may be configured to determine a balance speed of the motor at which a forward-rotational inertial force of the compression mechanism is equal to a backward-rotational gas force on the compression mechanism. The control module may be configured to adjust a running speed of the motor to the balance speed after receipt of a compressor-shutdown-command and before shutting down the compressor.
Claims20
A method for controlling compressor-shutdown-sound comprising:
- receiving a compressor-shutdown-command;
- determining an actual pressure of working fluid within a climate-control system;
- comparing the actual pressure to a predetermined threshold pressure value;
- comparing a running speed of a compressor-motor to a predetermined threshold compressor-motor-speed;
- increasing the running speed in response to receipt of the compressor-shutdown-command and based on the comparisons between the actual pressure and the predetermined threshold pressure value and between the running speed and the predetermined threshold compressor-motor-speed;
- and
- shutting down the compressor by discontinuing electrical power to the compressor-motor after increasing the running speed.
A system comprising:
- a compressor including a motor driving a compression mechanism to compress a working fluid;
- and
- a control module in communication with the motor and configured to increase a running speed of the motor in response to receipt of a compressor-shutdown-command and based on comparisons between an actual working-fluid-pressure and a predetermined threshold pressure value and between a predetermined threshold compressor-motor-speed and the running speed prior to the receipt of the compressor-shutdown-command.
A method for controlling compressor-shutdown-sound comprising:
- receiving a compressor-shutdown-command;
- determining a backward-rotational gas force on a compression mechanism of a compressor based on an actual pressure of working fluid discharged from the compressor;
- calculating a balance speed of a motor of the compressor at which a forward-rotational inertial force of the compression mechanism is equal to the backward-rotational gas force;
- adjusting a running speed of the motor to the balance speed in response to receipt of the compressor-shutdown-command;
- and
- shutting down the compressor by discontinuing electrical power to the motor after adjusting the running speed of the motor to the balance speed.
A system comprising:
- a compressor including a motor driving a compression mechanism to compress a working fluid;
- and
- a control module in communication with the motor and configured to determine a balance speed of the motor at which a forward-rotational inertial force of the compression mechanism is equal to a backward-rotational gas force on the compression mechanism, the control module configured to adjust a running speed of the motor to the balance speed in response to receipt of a compressor-shutdown-command and before shutting down the compressor.
Dependencies are inferred from the claim text.