1. Refrigerator is composed of four major components: compressor, condenser, expansion valve and evaporator.
2. According to the control or the use of intermediate needs can choose to install pressure controllers, temperature controllers, filter driers and other auxiliary devices, but the four major components are essential.
3. When the work of the gaseous refrigerant through the compressor is compressed into a high-temperature and high-pressure gas, into the condenser, the condenser is equivalent to a heat transfer equipment, the high-temperature and high-pressure gaseous refrigerant heat transfer into a low-temperature and high-pressure liquid refrigerant. Liquid refrigerant and then through the expansion valve, the so-called expansion valve is a throttling device, due to the flow of refrigerant out of the expansion valve is curbed, so out of the refrigerant pressure reduction, the temperature continues to fall, (refrigerator expansion valve is generally used instead of a capillary tube, because of the sudden from the big tube to the small tube, the same effect can play a throttling) become gas-liquid two-phase, and then into the evaporator, this time, refrigerant and then evaporator heat exchange gasification At this time, the refrigerant evaporator for heat transfer gasification, become high temperature and low pressure gaseous refrigerant back to the compressor to continue the cycle.
Maintenance of refrigerator
1. The power supply voltage used for the refrigerator shall not exceed or be lower than the range specified in the product specification (generally at 190-230 volts). If the power supply voltage does not comply with the provisions of the power supply should be regulated power supply, otherwise it can not be normal workpiece, and its damage to the refrigerator.
2. When the refrigerator needs to stop for a short period of time, must wait 3-5 minutes and then energized to start the motor. Such as many times in a row to start the electric machine, will make the start winding current overheating and beaker.
3. Strong acid, strong alkali and other corrosive substances, can not be placed in the freezer, so as not to rust the road body. Items with a strong odor, should be tightly packaged before placing in the freezer, so as not to contaminate other refrigerated items.
4. refrigerator if not used for a long time, should be placed in a dry, ventilated, non-corrosive gases in the room, to avoid the sun and close to the heat source, never open storage.
The refrigerator once a failure, to be timely eliminated. For the repair of refrigerators, generally have to first find out the fault, analyze the cause, in order to correctly remove the fault. Check the order is: first simple after the complex, first check the electrical system, then check the refrigeration system.