Basic composition and principle of air conditioning system
Air conditioning system consists of refrigeration system, heating system, air supply system and electronic control system.
1.Refrigeration system
The compressor compresses the low-temperature and low-pressure refrigerant gas from the evaporator into high-temperature and high-pressure refrigerant gas, and then sends it to the condenser to cool it into medium-temperature and high-pressure refrigerant liquid, and then flows through the liquid storage and drying bottle. According to the demand of refrigeration load, the excess liquid refrigerant is stored. The dried refrigerant liquid is throttled and depressurized in the expansion valve (the valve port size is determined by the refrigerant state of the temperature sensing package), forming a droplet-shaped refrigerant that evaporates and absorbs heat in large quantities in the evaporator, causing the temperature of the outer surface of the evaporator to drop (the blower drives the air to flow through the evaporator, and most of the heat of this air is transferred to the evaporator and becomes cold air, and then sent to the car). After absorbing heat, the refrigerant is sucked into the compressor cylinder under the negative pressure of the compressor inlet, and the refrigerant undergoes the next cycle, while the blower outlet continuously obtains cold air.
That is how the refrigeration system in the motor home air conditioner works in summer.
2.Warm air system
The warm air system uses a heater to introduce engine cooling water, and a warm water valve is set in the water channel. This valve is controlled by the driver or computer's instructions. When the warm water valve is opened, the hot engine cooling water flows through the heater, making the heater warmer. The blower drives the air to flow through the heater, and the air coming out of the heater is hot air.
That is how the warm air system in the RV air conditioner works.
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Post time: Jun-19-2024
