| 摘要 |
<p>A duct fan (1) comprises a fan housing (2) consisting of two components, an inlet component (3) and an outlet component (4), a motor bridge (5) placed within the housing, and a unit (6) consisting of a motor with impeller and attached to the motor bridge (5). The motor bridge (5), which is diametrically extended through the housing (2), is provided at its outer ends with lugs (16), which are received in impressions (9) in the edge portion (8) of the inlet component (3). The outlet component (4) is provided with an edge portion (12), which fits onto the edge portion (8) of the inlet component (3), and a shoulder (13) of the edge portion (12) of the outlet component (4) rests, in the assembled state, against the end edge of the edge portion (8) and against the motor bridge (5) at the lugs (16). The outlet component (4) is provided with impressions (14) in positions corresponding to the impressions (9) in the edge portion (8) of the inlet component (3) These impressions (14) form shoulders (15), which are on a level with the shoulder (13) of the edge portion (12) for abutment against the motor bridge (5) at the lugs (16). <IMAGE></p> |
