Refrigeration – Automatic control – Refrigeration producer
Patent
1991-12-02
1993-11-09
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
236 78D, 395 61, F25B 4100
Patent
active
052592103
ABSTRACT:
A refrigerating apparatus which is capable of accurate and swift correspondence to a transient change of a refrigerant circuit or an accumulated deviation of the degree of superheat of a refrigerant, thereby releasing the state in which the liquid refrigerant is flowing back to the compressor and the overheated state, and a method of controlling such a refrigerating apparatus. The refrigerating apparatus comprises a refrigerant circuit composed of a condenser, an expansion valve and an evaporator which are connected to each other in series, a means for detecting the evaporating temperature of the refrigerant, a means for detecting the exit temperature of the evaporator, and a control means for controlling the opening of the expansion valve on the basis of the evaporating temperature of the refrigerant and the exit temperature of the evaporator in accordance with a fuzzy reasoning.
REFERENCES:
patent: 5043862 (1991-08-01), Takahashi et al.
Procyk et al., A Linguistic Self-Organizing Process Controller, 1979.
Rule-Based Self-Organizing Controller, Sugiyama 1988 pp. 341-353.
Fuzzy Pid Supervisor, Lemke et al., 1985 pp. 602-608.
Ohya Satoshi
Tamayama Hiroshi
Taniguchi Hiroshi
Sanyo Electric Co,. Ltd.
Wayner William E.
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