Device car's air conditioner

In this article I would like to describe the device of the air conditioner of the vehicle and to focus readers ' attention on the mechanism of its functioning.

Any sophisticated Assembly used in automotive vehicles, requires constant care, and conditioners are no exception to this rule. On the contrary, attention to expensive detail should be proportionate to the losses incurred by the owner, if ‘C", God forbid, something happens. In order to better understand the needs of this unit, let us recall the construction of auto air conditioning and its principles of operation.

The air-cooling System inside a car works exactly on the same principle as conventional refrigerator, which costs you in the kitchen. In a closed, sealed system filled with freon dissolved in refrigeration oil. The objective of the oil – lubricate the compressor and the entire system.

The air conditioner Device of each of the automaker – his own. But fundamentally, these structures do not differ practically nothing.

What happens when you click “start” the cooling system? When enabled, serviceable air-conditioning is switched on electromagnetic clutch, and prijemny disk with a characteristic metallic sound is attracted toward the pulley, through which passes a timing belt (when the air conditioner is off, the pulley is spinning with no load). The compressor starts to work. Its mission – to compress the freon, which is now in the gaseous state. During the compression process heats the freon, and then hot and liquid refrigerant in the tube flows into condenser, or as it is called - the radiator. This title is quite acceptable, since the heated and compressed to a state of fluid gas is cooled in this structure.

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Helps him better and faster to give off heat fan, and in that case, if the car is still moving, the cooling process additionally connects a counter-flow of air.

When the loop ends, in another case, still under the pressure of the liquid freon at the outlet of the radiator enters the receiver-dryer. Here it is cleaned of dirt and the products of the compressor, before filing back into the system. Some manufacturers think the air conditioner device better than others. They add to the design of the receiver sight glass, looking in which, it is possible to visually assess the fill system. Unfortunately, this opportunity is available for a limited number of machines, and the vast majority of manufacturers in the air conditioner device a simple and useful option not administered.

But we digress, it's time to keep moving with the flow of the freon. After cleaning the dryer, it moves into the interior of the car, where it fulfills the job for which intended – the cooling of the car. Passing through the thermostatic expansion valve (TEV), which is installed on the end of the tube going to the cabin evaporator, the refrigerant in the vapor state at the boiling point leaving the evaporator. If the steam temperature is too high, the expansion valve closes if too low offer. Thus, it performs the function of a thermostatic choke, changing the cross section of the outlet tube to such values at which the temperature of the refrigerant at the outlet of the evaporator will be optimal. In the evaporation process, passing into the gaseous state, the working fluid cools and reaches freezing temperatures, the cold has blown over the evaporator by the blower fan. Then, after passing through the evaporator, the cold refrigerant enters the compressor, and the cycle begins anew.

The part of the system that goes from the compressor to the expansion valve is the pressure line. Tube thin and hot during operation. From the evaporator to the compressor is the return line, its tube, usually thicker and is cold to the touch. During operation, the pressure in the pressure line is up to 15 atmospheres. In reverse - 1-2 day. At rest it is balanced and is 5 atmospheres, and there and there.

I Hope that you read this material, and device of air conditioning has become much clearer for you.