Want to know how the air conditioner works?
Nowadays, most modern carsis equipped with various adaptations. Air conditioning is no longer a luxury, but only an object that provides a comfortable stay in the cabin. But, despite the prevalence of this device, not all motorists know how the air conditioner works. And this information can be useful for extending the life of the device.
How is the auto-conditioner?
Someone may wonder why to know this,seemingly, at first glance, unnecessary information. But after all, air conditioners in cars sometimes fail, then you have to contact the car service in order to repair this device. This is where you will find this information useful so that you will not be deceived in the showroom.
The device of autoconditioner includes:
- the compressor;
- the condenser;
- evaporator of the heat collector;
- tubes, sensors, valves, control unit.
The main element, perhaps, iscompressor. This is an aggregate that causes the refrigerant (most often freon) to circulate through the system. The evaporation of the heat-collector is necessary, so that freon evaporates in it, and heat is absorbed. The receiver-desiccant is necessary to drain the coolant.
How does the air conditioner work?
Ask this question when the device exitsbuilding, it will be too late. Therefore, it is better to know in advance how the air conditioner works. By and large, the principle of its operation is very similar to that of a domestic refrigerator.
Initially, Freon gas is compressed in a compressorcar air conditioner up to 12-20 bar. At the same time, it is heated to a high temperature in the range of 50 to 80 ° C. After that, the gas enters the condenser, where, thanks to a good exchange with the external environment, Freon is cooled, turning into a liquid. Fluon freon accumulates inside the condenser.
After this, the refrigerant in the liquid stateenters the receiver-desiccant. In it, it is filtered from dirt, drained by the silica gel from water, and the liquid fraction separates from the gaseous. Then freon from the receiver (in the liquid state) passes through small holes into the evaporator. The pressure decreases sharply and is from 1 to 3 bar.
As is clear from the name, in the evaporator liquid freonevaporates, turning again into gas. In this case, the evaporator itself is cooled to 0 ° C. Freon in the gaseous form re-enters the compressor under low pressure. There it contracts - and the cycle repeats again. It is clear that the control unit is used to control the air conditioning.
After reading this brief description, it is quite simpleunderstand how the air conditioner works in the car. And so it can work for a long time. However, there are negative factors that can lead to its breakdown:
- temperature changes;
- harmful environment;
Main problems of the car air conditioner
The most frequent causes of malfunctions in workconditioner can be called the leakage of the system itself. This can occur as a result of corrosion of aluminum parts, wear of rubber tubes, valves, gaskets. In addition, the integrity of the system can result from mechanical damage caused by an accident or unqualified repair.
Also, a compressor can often break down. You can determine this by the appearance of noise, knocking, buzzing. If the reason for this is damage to the bearing, it will be necessary to replace it. In the case where the compressor casing has ceased to be sealed, it can be repaired.
Restore the airtightness of the housing whenWelding assistance. In addition, problems in the operation of the car air conditioner may appear when the working surfaces of the condenser are heavily soiled. In this case, it must be replaced. The main thing is that it should be done by experienced and skilled craftsmen.