| 摘要 |
<p>A scroll housing (40) is provided for enclosing a centrifugal fan of an air distribution unit. The housing (40) is of the type configured for mounting to a panel (22) dividing the air distribution unit into inlet and outlet regions. The scroll housing (40) is formed from two sections (50, 52). A rear section (50) includes a curved wall (56) having a first edge (58) at one end thereof, which defines one side of the rectangular opening (39), and a second edge (60) at the other end of the wall (56). A front section (52) of the scroll housing also includes a curved wall (96) having a first edge (98) at one end thereof, which defines the fourth side of the rectangular opening (39) and a second edge (100) of the other end thereof. The second edge (60) of the curved wall (56) of the back section (50) is provided with a first hinge element (70) thereon. The second edge (100) of the curved wall (96) of the front section (52) is provided with a second hinge element (110)thereon. The side walls (62, 64) of the back section (50) have latching conformations (88) formed thereon at a location underlying the first edge thereof and above the semi-circular opening therein. The side walls (102) of the front section (52) have a latching conformation formed thereon in the first edge, which are adapted to positively engage the latching conformations on the back section (50) when the sections are pivoted toward one another about the hinge engagement.</p> |
