发明名称 |
Method of refrigeration case control |
摘要 |
A method of controlling a refrigeration case of a refrigeration system including the steps of locating an expansion valve of a refrigeration case, moving the expansion valve of the refrigeration case out of a predetermined position, sampling temperature readings from an evaporator coil of a refrigeration case, calculating an adaptive proportional-integral-differential (PID) of the temperature of the evaporator coil for the refrigeration case, and moving the expansion valve to a second position closer to the predetermined position based on the calculated proportional-integral-differential until the temperature of the evaporator coil for the refrigeration case is within a predetermined temperature range.
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申请公布号 |
US5533347(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19950396698 |
申请日期 |
1995.03.01 |
申请人 |
NOVAR ELECTRONICS CORPORATION |
发明人 |
OTT, JAMES H.;ANGLIN, MARK E.;HENDERSON, JAMES P. |
分类号 |
F25B41/06;F25B49/02;F25D29/00;G05D23/19;G05D23/20;(IPC1-7):F25B41/00 |
主分类号 |
F25B41/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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