JPS6267168U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a refrigerant circuit of an embodiment of the refrigeration system of this invention, Fig. 2 is a diagram showing the relationship between pressure settings and low pressure and force to explain the operation of the above refrigeration system, and Fig. 3 is a diagram of the conventional refrigeration system. It is a refrigerant circuit diagram of a refrigeration device. 1... Compressor, 1a... Drive motor, 3...
Condenser, 5...Expansion valve, 6...Evaporator, 8...Pressure detector, 9...Inverter, 10...Low pressure outlet. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) A compressor capable of compressing refrigerant and controlling its capacity, a condenser that liquefies the refrigerant gas compressed by this compressor, and an expansion device that depressurizes and expands the liquefied refrigerant in this condenser. A valve, an evaporator that evaporates the decompressed and expanded refrigerant, exchanges heat with the object to be cooled in the refrigerator, and returns the refrigerant to the compressor, and a drive electric motor that drives the compressor with variable frequency power. The inverter supplies the refrigerant from near the outlet of the evaporator, detects the low pressure and force at the low pressure and force outlet, and performs the capacity control by comparing the detected low pressure and force with a set pressure. A refrigeration system comprising a pressure detector that varies the frequency of the inverter to achieve this. (2) The refrigeration system according to claim 1 of the utility model registration, characterized in that a plurality of compressors are used to control the number of compressors in operation.