Patent ID: 8109814
Filing Date: 2012-02-07
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine generator system comprising: a rotor head provided with wind turbine blades; equipment of a drive mechanism and an electricity generation mechanism that are coupled to the rotor head; a nacelle in which the equipment is disposed; an air inlet provided in a front face of the nacelle; an air outlet provided on the nacelle; a ventilation fan provided in the nacelle and having a fan outlet communicated with the air outlet to exhaust air introduced from the air inlet through the air outlet to an outside of the nacelle, to perform ventilation cooling of the equipment; a side air inlet provided in a side face of the nacelle at a position where a negative pressure is generated by air flowing outside the nacelle; a rearward side air inlet provided in the side face of the nacelle at a position that is located rearward of the nacelle with respect to the side air inlet and where the negative pressure is eliminated; and switching means for selecting an open or closed state of the side air inlet and the rearward side air inlet.