The invention relates to an automobile air conditioner blower EFC device and system and an air conditioner. The automobile air conditioner blower EFC device comprises an EFC blower speed regulation module, an over-temperature protection module, a current-limiting protection module and an overvoltage protection module, wherein the EFC blower speed regulation module is built by adopting an operational amplifier, an MOSFET and discrete electronic components, the MOSFET is additionally provided with a heat conduction copper sheet to increase the corresponding heat conduction area, and the MOSFET is fully and flatly attached to the corresponding radiator and used for dissipating heat emitted by the MOSFET in the working process. The EFC module has the main functions of self-diagnosis of overvoltage, over-temperature, current limiting, locked-rotor and short-circuit protection besides stepless speed regulation of the air speed of the blower, and is stable, reliable, low in manufacturing and material cost and high in anti-electromagnetic interference capacity.
本发明涉及一种汽车空调鼓风机EFC装置、系统及空调,该汽车空调鼓风机EFC装置包括:采用运算放大器、MOSFET和分立电子元器件搭建的EFC鼓风机调速模块、过温保护模块、限流保护模块以及过压保护模块,其中,MOSFET额外设置有导热铜片增加对应的导热面积并充分平贴于对应的散热器,用于散发掉工作时自身发出热量。本发明EFC模块除了无级调速鼓风机风速以外,其主要功能还包括自诊断过压、过温、限流、堵转、短路保护功能,稳定可靠,制造及材料成本低,并且抗电磁干扰能力强。
Automobile air conditioner blower EFC device and system and air conditioner
一种汽车空调鼓风机EFC装置、系统及空调
2022-02-25
Patent
Electronic Resource
Chinese
IPC: | F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / 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 |
Two-way ventilation blower for automobile air conditioner
European Patent Office | 2015
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