The invention discloses an anti-freezing control system of a vehicle-mounted air conditioner. The system is used for a closed circulation refrigeration loop composed of a compressor, a condenser, a liquid storage device, a filter, an expansion valve and an evaporator. A CPU chip is adopted for controlling and collecting the temperature of an evaporator coil, starting and stopping of a compressor are controlled through the controller CPU chip, the purposes of defrosting and restoring normal work of a system are achieved, and it is guaranteed that the compressor is started again for more than 3min; a medium-pressure pressure switch is installed between the condenser and the liquid storage device, starting and stopping of a condensation fan are directly controlled, the pressure of the systemis dynamically adjusted, and the purposes of preventing the evaporator from frosting and freezing are achieved. The CPU (central processing unit) chip is adopted for control, and signals before a low-pressure pressure switch mounted on an air return pipe of the compressor is started are acquired, so that the problem that a system cannot be started when the environment temperature is too low and the low-pressure pressure switch is in an off state is solved. By adopting effective control measures, the adaptability of a refrigerating system is ensured.

    本发明公开了一种车载空调防冻结控制系统,用于由压缩机、冷凝器、储液器、过滤器、膨胀阀和蒸发器构成的封闭循环制冷回路,采用CPU芯片控制,采集蒸发器盘管温度,并通过控制器CPU芯片控制压缩机的启停,达到化霜和恢复系统正常工作的目的,确保压缩机再次启动有3min以上间隔时间;采取在冷凝器与储液器之间安装中压压力开关,直接控制冷凝风机的启停,达到动态调节系统的压力,达到避免蒸发器结霜、结冰的目的。采用CPU芯片控制,通过采集安装装在压缩机回气管上的低压压力开关开机前的信号,以解决环境温度太低时,低压压力开关处于断开状态下,系统不能启动的问题。通过采取有效的控制措施,保证了制冷系统的适应性。


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    Titel :

    Anti-freezing control system of vehicle-mounted air conditioner


    Weitere Titelangaben:

    一种车载空调防冻结控制系统


    Beteiligte:
    SUN YING (Autor:in)

    Erscheinungsdatum :

    2020-10-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht





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