automotive air conditioning system is
1. The automotive air conditioning system to realize the in-vehicle entry interpretation means air cooling, heating, ventilation and air purification
automotive air conditioning system is realized vehicle interior air cooling, heating, ventilating, and air purification. It can provide the passenger a comfortable driving environment, reducing operator fatigue and improve traffic safety. Air conditioning equipment has become one of the hallmarks of a measure of automotive functions are complete.
2. The automotive air conditioning system of the type
● divided by driving manner: Detached (a dedicated engine to drive the compressor, cooling capacity, stable, but the high cost, large size and weight, and more for large and medium-sized passenger cars) and non-independent (conditioning compressor driven by the vehicle engine, engine cooling performance influenced by the work, poor stability, and more for small buses and cars).
● divided by the air conditioning performance: single function type (refrigeration, heating, ventilation systems are each mounted, a separate operation, noninterference, used for passenger cars and trucks on the large) and being of one-piece (refrigeration , heating, ventilation and air duct common blower, control the same control board, it can be divided into temperature controlled mixing warm and cold air, respectively, and a combined work of cold or warm wind can operate simultaneously work multiple mixed temperature controlled car). When
● divided by manual control (DIP control function keys on the panel temperature, wind speed, wind direction control) and electrically controlled pneumatic control (by the vacuum control means, a good air-conditioning function election key, temperature and air flow can be automatically controlled within a predetermined temperature).
● Press control modes: automatic adjustment (using the calculated comparison circuit, by presetting of sensor signal and the control signal adjusting means to automatically adjust the temperature and air volume) and a computer-controlled automatic adjustment (to the microcomputer as the control center of the interior air to achieve all-round, multi-function control and optimal regulation)
3. the arrangement of the air conditioning system
arrangement of different types of air-conditioning system vary. Car is currently widely used integrated heating and air-conditioning systems. Pattern is arranged to an evaporator, a radiator heater, a centrifugal blower, and the like are assembled control mechanism, referred to as an air conditioner assembly
4. Composition automotive air conditioning system
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modern refrigeration system of an air conditioning system, heating systems, ventilation and air cleaning device and control system.
automotive air conditioning compressor is generally formed predominately (Compressor), electrically controlled clutch, a condenser (condensers), an evaporator (Evaporator), an expansion valve (expansionvalve), drier (receiverdrier), pipe (Hoses ), condenser fan, vacuum solenoid (vacuumsolenoid), idle speed control systems and other components. Automobile air-conditioning of the high pressure line and a low-pressure line. It includes a compressor output-side high pressure side, the high-pressure pipe, a condenser, a drier and a liquid conduit; low-pressure side comprises an evaporator, the accumulation, a return line, the input side of the compressor and compressor oil pool.
drier – storing a refrigerant and is actually absorbed by the refrigerant moisture, impurities apparatus. On the one hand, it is equivalent to the fuel tank of the car, was leaked refrigerant extra space to add refrigerant. On the other hand, that it is like a air cleaner, filter out impurities doped in the refrigerant. Also drier with some silicone material acts to absorb moisture.
condenser and an evaporator – although they are not the same name, but similar structures. They are covered with a metal sheet for heat dissipation in a row around the bend pipe, in order to achieve devices with outside air heat exchange pipe material. It refers to a condenser for condensation refrigerant heat pipe in which a liquid from the gaseous cemented. Radiator The principle is similar to the engine (only difference is that the water tank has a liquid only), so it is often installed at the front, with tanks together to enjoy the cool breezes from the front. Where short condenser where to cool, so that condensation heat. Opposite the evaporator and condenser, which is a refrigerant from the liquid into gas (i.e., evaporator) to absorb heat properties.
5. Automobile air conditioner works
car air conditioning system compressor, a condenser, a receiver drier, an expansion valve, an evaporator and a blower and so on. Using brass (or aluminum) and high pressure rubber tube connected to a closed system between the various components. Working refrigeration system, refrigerant circulates in different states within this closed system, and each cycle of four basic processes: 1 compression process: compressor suction temperature low-pressure refrigerant gas at the outlet of the evaporator, it compressed into high temperature high pressure gas discharge of the compressor. 2, the cooling cycle: superheated refrigerant gas high temperature and pressure into the condenser, due to the reduction of pressure and temperature, the refrigerant gas is condensed into a liquid, and discharges a large amount of heat. 3, throttling process: temperatures and higher pressure refrigerant liquid through an expansion device after the larger volume, a sharp decline in pressure and temperature, a mist (fine droplets) discharging the expansion device. 4Endothermic process: mist liquid refrigerant enters the evaporator, and therefore much lower than the boiling point of the refrigerant within the evaporator temperature, it is evaporated into gas refrigerant liquid. It absorbs surrounding heat in the evaporation process, and then temperature low-pressure refrigerant vapor and enters the compressor. The above process cycle is performed, to reduce the ambient air temperature of the evaporator.
6. The automotive air conditioning use and maintenance methods
wanted to create a cool and comfortable interior space, the proper use of air conditioning and air conditioning necessary maintenance is essential. The correct use and maintenance methods, not only can bring you a cool summer, but also extend the life of air conditioning, air conditioning use the following “nine considerations” may be helpful.
● retrofit air conditioning to be careful
does not advocate for car air-conditioning to be modified, because the original car’s engine and air conditioning are matched, such as random modification will affect the car’s performance.
● air temperature is not too low
to choose the right air temperature, air-conditioning maintenance is the first step. As the hot weather, many owners prefer to make the temperature too low, it will affect their health. Normally, the inside temperature and the outside temperature difference should be 5 ℃ to 6 ℃, i.e., the optimum temperature is 18 ℃ and conditioned to 25 ℃.
● control outlet direction
since that enrich our knowledge of physics, we must remember that cold air sinks, the principle of hot air rising. Do not forget to learn and use, oh. Car air conditioning vent principles: The outlet upward air conditioners, will open heatingOutlet down.
● Do not open the time is too long
We know you’re “not bad money”, but still encourage you to properly close the air in motion. Prolonged use of air conditioning will make the condenser pressure is too large, this will cause loss of refrigeration systems. Thus, if the temperature inside the car has been let your peace of mind, it might be closed while air conditioning, it also rest, rest.
● open the appropriate winds of
afraid of the noise you already have long to enjoy the sweetness and light in only a small amount of wind? It is also appropriate to sing a song River of Go! Will use when air conditioning sucked into a lot of dust, the dust periodically open the wind can blow out the surface of the duct, the easiest method is most effective.
off the air conditioner with low ●
try to close the air at low speeds, improving the air conditioning performance is not traffic jam at the high speed operation of the engine, it will shorten the engine and air conditioning compressors life.
● switching sequence to remember
off the air conditioner and then to turn off, to ensure that the vehicle starts at the next engine start is simple; on the contrary, is not completely turned off along with the air conditioner starts the engine such a high load operation will damage the engine. And many owners are often remembered after flameout turn off air conditioning. Therefore, each should be closed after parking then turn off air conditioning, it is best to start the vehicle two or three minutes after the engine is lubricated, and then turn on the air.
● long time under the hot sun air conditioner slowdown
long vehicle parked in the sun, the inside temperature is high. In such cases, immediately after the vehicle is started Do not use air-conditioning, should put all the windows are open for ventilation, the hot air out, and so the inside temperature drop, then close the windows, turn on air conditioning. In addition, it should not be frequently turned on and off air conditioning to prevent damage to the air conditioning system. Especially for cargo pickup models, in a short time when the shipment should avoid repeated switching air conditioning.
● car air conditioning as much as possible not to smoke
When the air conditioning inside the car, the crew not to smoke in the car. If smoking, please conditioning ventilation controls to their position outside the circle. Also note that, to keep in mind is not an air-conditioned car for a long time suspended rest or sleep. Because when a stopped vehicle, driving and poor ventilation in a closed compartment air conditioning, if this time open air rest or sleepIt is likely to be caused by the leakage of harmful gases emitted from the engine into the car poisoning, and even life-threatening.