Vibration protection in a variable speed compressor
AssigneeEmerson Climate Technologies, Inc.
InventorJean-Luc M. Caillat
Life of this patent
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Abstract
Vibration protection in a compressor system with a variable speed compressor may include operating a variable speed compressor of a compressor system at a first frequency, measuring a vibration of the compressor system at the first frequency, determining whether the vibration exceeds a maximum vibration value, and operating the variable speed compressor at an average frequency equivalent to the first frequency, when the vibration exceeds the maximum vibration value, by identifying an allowed upper frequency and an allowed lower frequency, calculating an upper operating time and a lower operating time, and operating the variable speed compressor at the allowed upper frequency for the upper operating time and the allowed lower frequency for the lower operating time.
Claims20
A method comprising:
- operating a variable speed compressor of a compressor system at a first frequency;
- measuring a vibration of the compressor system at the first frequency;
- determining whether the vibration exceeds a maximum vibration value;
- and
- operating the variable speed compressor at an average frequency equivalent to the first frequency when the vibration exceeds the maximum vibration value, by:
- identifying an allowed upper frequency and an allowed lower frequency;
- calculating an upper operating time and a lower operating time;
- and
- operating the variable speed compressor at the allowed upper frequency for the upper operating time and the allowed lower frequency for the lower operating time.
A system comprising:
- a compressor including a motor operable at a variable frequency based on a motor input;
- a drive in communication with the motor providing the motor input based on a drive input;
- a vibration measurement device, operably coupled to the compressor, that measures a vibration of a compressor system that includes the compressor and that outputs vibration values based on the measured vibration;
- and
- a control module in communication with the vibration measurement device and the drive, wherein the control module receives and stores the vibration values, determines frequency characteristics of the compressor based on the vibration values, and provides the drive input based on the frequency characteristics.
Dependencies are inferred from the claim text.