| 摘要 |
A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans ( 11, 12 ), each having an electrical drive motor ( 13, 14 ), and a plurality of switches (S 1 , S 2 , S 3 ), each capable of being switched over into two positions, by means of which the drive motors ( 13, 14 ) are capable of being turned on and back off individually or in a series or parallel connection. To prevent disturbing noises from developing when the individual fan ( 11, 12 ) comes to rest after being turned off, when the operating drive motor or motors ( 13, 14 ) is/are turned off, an electronic control unit ( 20 ) forces the switches (S 1 , S 2 , S 3 )-at least temporarily-over into switch positions that bring about a short-circuiting of the turned-off drive motor or motors (FIG. 1 ). |
