Refrigeration – With indicator or tester – Condition sensing
Patent
1993-07-21
1995-01-17
Tanner, Harry B.
Refrigeration
With indicator or tester
Condition sensing
62149, F25B 4902
Patent
active
053816692
ABSTRACT:
The refrigeration control software periodically checks for overcharge and undercharge conditions by placing the expansion valve at a predetermined setting, based on measured environmental temperature. While the expansion valve is at the predetermined setting a series of compressor discharge temperature readings are taken to obtain an average reading and this average reading is compared with a reference value. An undercharge condition is declared when the average reading is greater than the reference value and an overcharged condition is declared when the average reading is less than the reference value.
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Bahel Vijay
Herroon Gregory P.
Hickey Mickey
Millet Hank
Pham Hung
Copeland Corporation
Tanner Harry B.
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