The invention discloses a control circuit for an automobile air conditioner. The control circuit comprises a voltage comparison control circuit, a switching circuit, a divider resistor and a power supply control circuit. One end of the divider resistor is connected with the whole vehicle ground, the other end of the divider resistor is connected with the condenser fan and the first input end of the voltage comparison control circuit, and the condenser fan is connected between the first output end of the power supply control circuit and the divider resistor in series to form a voltage division detection circuit. The output end of the voltage comparison control circuit is connected with the first control end of the switching circuit, the first input end of the switching circuit is connected with the first output end of the power supply control circuit, and the first output end of the switching circuit is connected with the input end of the condenser fan. The voltage comparison control circuit outputs a high level when the condenser fan is locked, so that the first input end and the first output end of the switching circuit are disconnected, and then the condenser fan stops running. The fan stalling fault can be handled in time, and the refrigeration efficiency is improved.
本发明公开了一种用于汽车空调的控制电路,包括:电压比较控制电路、开关电路、分压电阻和电源控制电路。分压电阻一端与整车地相连接,分压电阻的另一端分别与冷凝器风扇和电压比较控制电路的第一输入端相连接,冷凝器风扇串接在电源控制电路的第一输出端与分压电阻之间,以形成分压检测电路。电压比较控制电路的输出端与所述开关电路的第一控制端相连接,开关电路的第一输入端与电源控制电路的第一输出端相连接,开关电路的第一输出端与冷凝器风扇的输入端相连接。电压比较控制电路在冷凝器风扇发生堵转时输出高电平,使开关电路的第一输入端与第一输出端断开连接,进而使冷凝器风扇停止运转。本发明能及时处理风扇堵转故障,增加制冷效率。
Control circuit for automobile air conditioner
一种用于汽车空调的控制电路
2024-08-09
Patent
Electronic Resource
Chinese
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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