Air volume control method

The invention provides an air volume control method. The air volume control method is applicable to an air conditioning system with a fresh air device. The air volume control method comprises the following steps: detecting indoor pressure and outdoor pressure so as to obtain an indoor pressure detection value P1 and an outdoor pressure detection value P2; acquiring a pressure difference delta(P) according to the indoor pressure detection value P1 and the outdoor pressure detection value P2; and adjusting a fresh air inlet amount Q1 of the fresh air device and/or the blowdown air amount Q2 of the air conditioning system according to the pressure difference delta(P) so as to allow the pressure difference delta(P) to be equal to the preset pressure value P. The air volume control method in the invention overcomes the problem that fresh air conditioning systems are large in energy consumption in the fresh air exchange process in the prior art. 本发明提供了一种风量控制方法。风量控制方法适用于具有新风装置的空调系统，风量控制方法包括：检测室内压力和室外压力，以得出室内压力检测值P和室