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Fresh display cabinet refrigeration system introduction

2017/11/16

Ordinary fresh-keeping display cabinet refers to the direct-cooling fresh-keeping display cabinet with reciprocating compressors. There is only one mechanical thermostat in this kind of fresh-keeping display cabinet, with two doors, three doors and four refrigerated freezers.

       The working principle of general fresh-keeping display cabinet refrigeration system Ordinary fresh-keeping display cabinet generally adopts reciprocating compressors. The structure of its refrigeration system is typical. The work of refrigeration system is controlled by the electrical system. The control of the electrical system is based on user settings.

Below, Xiao Bian will introduce you to the work of the refrigeration system:

1, the compressor motor is the heart of the refrigeration system for thermal energy conversion, and the refrigerant in the system reciprocating cycle, it sucked from the evaporator has absorbed heat into a gaseous refrigerant, after compression into high temperature and pressure Gas, delivered to the door to the box dew tube. This process is based on the motor as the power, about to convert electrical energy into mechanical work through the compressor and mechanical power into heat.

2. The anti-condensation pipe is hidden around the cabinet door, the refrigerant is compressed into high temperature and high pressure gas in the compressor, sent to the condenser through the anti-condensation pipe, so that the cabinet door frame is warmed to above room temperature to avoid the hot and humid season Door frame surface dew.

3. Condenser Due to the condenser pipeline is very long, the compressor discharges the high pressure, high temperature gaseous refrigerant in the process of flowing through it, through the heat transfer to the air cooling, the temperature gradually decreased and condensed into liquid refrigerant.

4. Drying the filter The liquid refrigerant discharged from the condenser first absorbs the moisture in the refrigerant due to the dry filter, filters the visible dirt, and sends it to the capillary. In order to avoid the impurities and water into the small pore capillary formation blockage, affecting the refrigerant circulation.

5. Capillary capillary orifice diameter is very small, usually 0.5mm - lmm from the drying filter liquid refrigerant flow through the capillaries are limited throttling, flow control to make it fully and fully liquid.

6. Evaporator Liquid refrigerant enters a large pore evaporator through a capillary tube with a very small diameter. Sudden reduction in pressure causes the boiling point to drop and evaporate into a gas which absorbs heat from the surroundings (freezer and freezer compartment) during evaporation, thereby reducing Freezing, freezer temperature. The refrigerant vaporized by the evaporator is again sucked in by the compressor and the refrigerant is circulated in the system in such a manner that heat in the freshest showcase is transferred to the surrounding air through the refrigerant so that the most fresh showcase can be cooled.