HIGH PRESSURE PROTECTOR AND CONDENSATION PRESSURE CONTROLLER IN REFRIGERATING APPARATUS

摘要

PURPOSE: To demonstrate the capacity of a refrigerating plant stably by preventing a possible abnormal rise in the high pressure of a refrigerant circuit. CONSTITUTION: A condensation temperature TEX is detected according to detection values and operation modes of an outdoor heat exchange thermistor 8 and a room heat exchange thermistor 9, and a variationΔF of the amount of air of an outdoor fan 6 is computed by a fuzzy theory computation based on a control rule from a deviation E between the condensation temperature TEX detected and a reference condensation temperature Tsc or TSH and a variationΔHz of an operation frequency of a compressor 1 to change the amount of air of the outdoor fan 6.