State estimation apparatus, method, and program storage medium
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United States of America Patent
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Jun 14, 2022
Grant Date -
Jan 14, 2021
app pub date -
Mar 30, 2018
filing date -
Mar 30, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A state estimation apparatus includes: a current information acquisition part that acquires information about a current at a power supply part of a refrigerating/freezing apparatus; a current information storage part that holds current information in a normal state of the refrigerating/freezing apparatus; an evaluation part that derives a degree of change based on the acquired current information and the current information in the normal state of the refrigerating/freezing apparatus; a filter cleaning determination part that estimates a clogging state of a filter of the refrigerating/freezing apparatus based on the degree of change to determine whether cleaning of the filter is necessary; and an output part that provides, for a determination result indicating that the cleaning of the filter is necessary, an output to that effect.
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