By the principle of action refrigerators are compression, absorption, thermoelectric and vortex cooling.
compression refrigerators are most common in the home and there are one-, two- or three-compartment.
How does the refrigerator compressor?The main components of these refrigerators are the compressor, evaporator, condenser, expansion valve and the refrigerant.The evaporator, which absorbs heat the internal volume of the refrigerator is in its upper part, above the freezer compartment.From the evaporator the refrigerant (Freon), which is in the gaseous state by the compressor transfers heat to the condenser.He gives it to the environment.The refrigerant cooled in the transfer of gaseous and becomes liquid.In this form, it enters the capillary tube and thence to the evaporator, where again picks up from the interior of the refrigerator heat becomes gaseous.The cycle repeats.
How does a refrigerator with a camera?Evaporator in such aggregates is placed in its upper part.The cooled air as the heavier falls down and the heat rises, to the evaporator.So is the circulation and maintain the necessary temperature.When the temperature inside the refrigerator reaches the set, the compressor is deactivated.To a very cold air does not spoil foods that do not require freezing, freezer set at a special tray with holes.They can be opened and closed, thereby controlling the temperature in the freezer.
How does the refrigerator, and having a refrigeration and freezers, the so-called two-door?Its big advantage is that both chambers have their own evaporator.Two doors provide maintaining the desired temperature in each chamber.Compressors in such units may be one or two.If there are two, each operating independently, as well as in single-compartment refrigerators.If one compressor, the temperature in the refrigerating chamber is regulated with the help of special electromagnetic valves which are opened and closed according to the indications of the thermostat in the refrigerator compartment.Compressor for such units on and off according to the testimony of the thermostat in the freezer.
Recently, two-door refrigerators are available with the system NO FROST.They not only compressor but only one evaporator.It is located either in a freezer or on the rear wall behind the panel.Behind him placed fan, forcing the warm air.In the evaporator the air is cooled and ejected for a special system for products.Most of it gets into the freezer, and less - in the refrigerator compartment.
How does refrigerator with three cameras?The third camera is designed for storing fruits, vegetables and other perishable foods at a temperature close to zero.That is why the third chamber called zero.It may be autonomous, having its own compressor and evaporator.It can also be built into the refrigerator and have a hermetic protection against the loss of cold air.Placed it near the freezer, from which it comes, and the cooled air.The temperature in such hermetic chambers is not regulated.
With any refrigerator in operation can occur different breakdown.For example, the refrigerator works, but not frost.Refrigerator runs - which means that the sound can be heard from the compressor, and when the door of the refrigerating compartment light illuminates.If a refrigerator with two compressors, is not only one freezes any camera, and sometimes both at once.The reasons for this may be several.
1. Blockage of capillary. It might be due to the fact that the filter-drier starts to pass various impurities, and also when the motor burnout occurred.To determine this fault may be on the strong heating of the compressor housing.Eliminates blockage washing and flushing the capillary tube with compressed nitrogen under high pressure or shortening of the capillary.If that fails, the capillary and filter drier are replaced by new ones.
2. Motor compressor does not create pressure in the refrigerant system. motor starts to act because of the frequent power failure, the ingress of moisture into the electronics device or because of violation of the rules of operation, that is untimely shutdown systems "super cold", "forced freeze" if in the fridge provided their mechanical disconnection.Determine the damage can be uncharacteristic of clicks, rumble, and professionally - by measuring voltage and current.Eliminating failure is to replace the compressor.
3. Leaking refrigerant. occurs due to corrosion of the material tube, which circulates the refrigerant therein any microcracks and microcracks due to soldering.This happens when a manufacturing defect, rough handling (for example, when washing the refrigerator or inaccurate transportation), with long service life.Determine the temperature can damage the capacitor.If there is a leak, it is not heated.Remedy is the sealing of cracks and filling the new refrigerant.
4. Broken thermostat. Identify possible failure by loosening terminal on the thermostat and closing the transaction.If after that the refrigerator starts to freeze, then the cause is determined correctly.Broken thermostat should be replaced by a new one.Sometimes the thermostat does not work simply because it is not regulated.
5. In NO FROST refrigerators do not work defrost heating elements and the fan in the ice. The first thing to do - to defrost the refrigerator.Then check the heating elements.Doing this should only be a professional.Faulty heating elements can not be repaired and replaced by new ones.
