| 摘要 |
The ventilation assembly (1) consists of external housing (2) fixed to main ceiling (3) of building and containing motordriven fan (4), with intake (5) and outlets (6) in the curved and optionally ribbed side walls (7) of housing, located between top and bottom (9) walls. The ventilation assembly (1) consists of an external housing (2) fixed to the main ceiling (3) of a building and containing a motordriven fan (4), with an intake (5) and outlets (6) in the curved and optionally ribbed side walls (7) of its housing, located between top and bottom (9) walls. The fan is insulated from the housing by a shell (11), with anti-vibration lugs (12) between it and the housing, while the latter is insulated from the ceiling by lugs (14) with elastic inserts (17). There is also an anti-vibration bellows element (21) between the housing and the shell, both of which are made from a molded thermoplastic material with a sound-deadening filler additive. |
