supermarket refrigerated showcase » article > walk-in display coolers > The structure and working principle of the indirect-cooled walk-in cooler
The structure and working principle of the indirect-cooled walk-in cooler
author: supermarket refrigerated showcase category: walk-in display coolers Views: 569Time: 2016-08-22
The structure and working principle of the indirect-cooled walk-in cooler
The inter-cooled walk-in cooler, also known as the air-cooled frost-free walk-in cooler, is characterized by:
① Only install an evaporator in the freezer for refrigeration, rely on the freezer fan and air duct to circulate the strong refrigeration air, control the cold distribution of the freezer and the refrigerator according to the size of the door air, and sense the temperature of the refrigerator through the thermostat to realize the on and off control;
② The automatic frosting circuit is added. The work of the defrosting circuit and the compression operation are opposite to each other, because the compressor circuit and the defrosting circuit are controlled by the defrost timer at the same time, and the defrost timer is single-pole dual-control, which can only be controlled at any time. Connect one of the circuits. The working principle of the
walk-in cooler refrigeration system The structure of the
0n walk-in cooler refrigeration system depends on the type of compressor used. The refrigeration principle is basically the same as that of the ordinary walk-in cooler.
adopts reciprocating compressor refrigeration system The essential difference between the reciprocating compressor refrigeration system and the ordinary walk-in cooler refrigeration system is that the refrigerating compartment evaporator is removed, and the working principle is exactly the same. Ordinary walk-in cooler refrigeration system uses a rotary compressor refrigeration system, which is a rotary compressor refrigeration system. The difference between it and the refrigeration system using reciprocating compressors is that it adds a one-way valve, accumulator and oil-liquid separator (generally not marked in the refrigeration system diagram), which is caused by the absence of suction valve and refrigeration in the rotary compressor. It is determined by the characteristics of small oil rating.
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