Vibration protection in a variable speed compressor
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United States of America Patent
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Jun 20, 2017
Grant Date -
Feb 19, 2015
app pub date -
Sep 29, 2014
filing date -
Oct 5, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method are provided for a variable speed compressor with a control module that controls an operating frequency of the variable speed compressor. The control module stores a prohibited frequency range that includes a resonant frequency of the variable speed compressor and an allowed upper frequency above the prohibited frequency range and an allowed lower frequency below the prohibited frequency range. The control module determines a requested frequency and operates the variable speed compressor at the allowed upper frequency for an upper frequency operating time and at the allowed lower frequency for a lower frequency operating time when the requested frequency is within the prohibited frequency range. The control module determines the upper frequency operating time and the lower frequency operating time such that a time-averaged frequency output over the upper frequency operating time and the lower frequency operating time corresponds to the requested frequency.
First Claim
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International Classification(s)
- G01H:MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC....
- G01M:TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR S....
- G05B:CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTION....
- F04B:POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G05D:SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC....
- F04C:ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DIS....
- F01B:MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DIS....
- F01C:ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR EN....
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