5
04.06.2019
CHEM-PROOF STATIONARY FAN
WPA-CHEM
Fig. No.3
– Outlet configurations in fans type WPA-CHEM
5.
Structure and Function
Fig. No.4
– WPA-CHEM – Structure
Impeller is a welded construction, of non-plasticised plates of polyvinylchloride. To the fan
impeller is fastened an aluminium hub that (along with the impeller) is connected with the
motor pivot. The housing is a welded construction of two parallel walls strengthened with
ribs. Between the walls is located a spiral element of the housing.
The housing is made of plates of non-plasticised polyvinylchloride. To the housing disk is
welded an inlet confusor. The housing disk is fastened disconnectably, at the front wall
of the housing (its easy dismantling provides free access to the impeller).
The inlet confusor is also extruded of a plate of non-plasticised polyvinylchloride. Induc-
tion motors on feet are applied as a drive element of the fan, whereby the motor housing
is of aluminium alloy.