| 摘要 |
An improved diffuser (27) for central Air Conditioning system comprising of a single piece centre core (30) at least one intermediate core (29) and an outer frame, (28) the single piece centre core consisting of an outwardly and downwardly directed slanting surface (35) originating from a centre point and ending into a substantially horizontal flange at its bottom periphery, a pair of vertical strips (36) attached at the back side of the slanting surface in spaced apart relationship and opposing to each other, at least a pair of spaced apart holes (25) provided in each vertical strips, the said intermediate core consisting of vertical collar (31) at its top, an outwardly and downwardly directed slanting surface (16) ending into a substantially horizontal flange (17) at its bottom, at least a pair of holes (25) provided into two opposing vertical sides (34) of the said collar, the said outer frame consisting of a vertical collar (7) at the top, an outwardly downwardly directed slanting surface (9) ending into a substantially horizontal flange (10), at least a pair of holes provided in two opposing sides of the said collar and at least one pair of rods (19) passing through the said holes for attaching the said centre core to the said intermediate core and said outer frame. |
