▎ 摘　　要

NOVELTY - The utility model claims a new fan for middle and primary school classroom, comprising a box body and a main control circuit and a power supply module set in the box body; the front surface of the box body is provided with a control panel; the side part and the top part of the box body are respectively provided with an indoor air inlet and an indoor air outlet; the back part of the box body is respectively provided with an outdoor fresh air inlet and an outdoor exhaust outlet; the box body is provided with a composite primary filter; a plasma generator and a composite high efficiency filter; between two filters is provided with an alternating current fan and a heat exchange box with graphene full heat exchanger; the outdoor exhaust outlet is connected with an outdoor machine through the air pipe; the outdoor machine comprises a condensing plate, a temperature sensor, a cross flow fan, a compressor; a four-way valve and a liquid storage tank; The utility model has the function of clean air and heat exchange at the same time, through the separation of the indoor machine and the exhaust fan, greatly reducing the occupied space in the room, especially suitable for middle school classroom.