Air conditioning system for car

Abstract

The invention relates to an air conditioning system for a car. The air conditioning system is characterized in that a first air flowing shell is used for guiding air flow; an evaporator is arranged inthe first air flowing shell, and all the air flow in the first air flowing shell flows through the evaporator; a first air blower is arranged in the first air flowing shell and used for generating air flow; a first outflow hole leads the air flow in the first air flowing shell to flow to the outside of the shell. According to the air conditioning system, the least number of valves are arranged onrefrigerant circuits, meanwhile, air flow guide devices are arranged in air flowing shells respectively, and the switching between a refrigeration / dehumidification work mode and a heating work mode of the system is achieved through the teamwork of the valves and the air flow guide devices. According to the air conditioning system for the car, while the size of the system is reduced, the refrigeration / heating efficiency of the system is improved, that is, it is achieved that the size is small and the efficiency is high with fewest components.

Description

technical field [0001] The invention relates to an air-conditioning system for automobiles, which is used for automobiles and integrates cooling and heating. Background technique [0002] At present, with the continuous upgrading of automobile emission regulations, automobiles are gradually reducing their emissions, and are further developing into new energy forms such as hybrid electric vehicles and pure electric vehicles. However, it has brought about technical problems in automotive air conditioning: the engines of small-displacement vehicles have less waste heat available in winter, hybrid vehicles have no heat source when driving purely electric, and pure electric vehicles have no heat source. The above situation has caused vehicle heating and defrosting in winter / Defog requirements cannot be met, reducing driving comfort and even affecting driving safety. There are two known solutions, PTC heater and heat pump air conditioning system. PTC heaters are simple and rel...

AI Technical Summary

Problems solved by technology

However, the heat exchanger used for condensation heat exchange is completely placed inside the air circulation shell, and the headwind caused by the speed of the vehicle cannot be used to improve the heat exchange efficiency of the condenser, and the condenser must have a large windward area, resulting in its bulky and difficult to arrange

At the same time, since the heat transfer from the condenser to the air is large in the cooling / dehumidification working mode, and the heat transfer from the condenser to the air is small in the heating working mode, in order to take into account the two working modes, the condenser in the system is Tends to be poor heat dissipation in cooling / dehumidification mode of operation, and tends to be too much resistance in heating mode, resulting in low system efficiency

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