| 摘要 |
<p>An alternator comprising an outer housing, which receives and retains therein an inner housing, a cooling fan connectable to the inner housing, a cowling for retaining the fan; characterized in that the cooling fan comprises a radially disposed array of blades; the array of blades including a combination of blades of a first smaller surface area and blades of a second larger surface area. 'N.. / 3 -~ N; -v 111 / i/ ~N A" ~ . 3 'N. K' / <2 rigure 1 £4. 7/> Ii. rs~ A' - N. I ' ~" ~ -A t 12 /1/94 22 N' "N~ I/t~4< /7 / ', 10 . /~ t/ > '/'o "K r~.-3 S figure 2 Ftoure</p> |
