Controller for electrically driven expansion valve of refrigerating cycle
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United States of America Patent
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-
Oct 27, 1992
Grant Date -
N/A
app pub date -
Jun 27, 1991
filing date -
Jun 29, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A valve controller which controls the opening degree of an electrically driven expansion valve mounted in the refrigerating cycle, in accordance with a difference between a refrigerant saturation temperature of an outdoor heat exchanger detected with a first temperature sensor and a refrigerant temperature at the suction port of a compressor detected with a second temperature sensor. A sensor error correcting unit is provided whereby a detected temperature error is calculated in accordance with the outputs of the first and second temperature sensors exposed in an atmospheric air having a specific temperature, and in accordance with the detected temperature error, a difference between the refrigerant saturation temperature and the refrigerant temperature at the suction port of the compressor is corrected.
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