| 摘要 |
Fan (1), comprising a centrifugal governor device (15) for automatic operation of a shutter (4) provided with fins (104), housed in a container (2) and comprising blades (5) which can be connected to a rotation shaft (6) connected to operation means (7); said centrifugal governor device (15) comprises at least one translating and rotating assembly (115) to which the lower ends of a pair of levers (29, 30) are connected, in a rotatable manner; said levers are symmetrical with respect to said assembly (115) and each comprises, at the upper end, at least one counterweight mass (31) and, in an intermediate position, a rotation pin (129, 130); said assembly (115) is adapted to move as a result of the centrifugal force generated by said masses (31) when the shaft (6) is rotated and consequent rotation of said levers (29, 30) about the relative pins (129, 130); said centrifugal governor device (15) is provided with a translating element (215) connected on one side to said assembly (115) by means of at least one bearing (16) and on the other side to a connecting rod (18, 18', 18") connected by means of appropriate transmission elements (39, 34, 37) to two or more fins (104a, 104b, 104c, 104d) for operation of the shutter (4) so as to simultaneously open them or close them; said two or more fins (104a, 104b, 104c, 104d) are connected by means of appropriate transmission means (9, 10) to the remaining fins (104) of the shutter (4) to allow simultaneous and automatic opening or closing thereof. |
