Patent ID: 7677964
Filing Date: 2010-03-16
Classification: F24F

Abstract:
1. An air-exhausting apparatus adapted to be mounted on a roof of a structure for exhausting air outwardly of the structure, the air-exhausting apparatus comprising: a tubular base having a top side, a bottom side adapted to be mounted on the structure, a lower end portion being cylindrical, the top side having an upper perimeter end portion converging inwardly, the lower end portion having an opening thereto with a diameter being substantially larger than a diameter in an opening through the upper end portion, and a spider platform covering the upper opening through the upper end portion; a fan mounted on top of the spider platform covering the upper opening of the tubular base; a coupling sleeve unit having a generally cylindrical shape with a first coupling end portion forming a first generally cylindrical sleeve that is wrapped outside the base, the sleeve having a lower end with a lower diameter, a middle portion with a middle diameter, and an upper end with an upper diameter, wherein the lower diameter of the lower end of the sleeve is substantially identical to the upper diameter of the upper end of the sleeve, and the middle diameter of the middle portion being larger than both the lower and the upper diameters, and an annular space between the sleeve and the base forming a draining passage therebetween completely about the base, with an enlarged annular space between the middle portion and the base, and the middle portion of the first sleeve being substantially below the upper opening of said base, and a coupling sleeve unit having a second coupling end portion opposite to said first coupling end portion, the second coupling end portion forming a second cylindrical sleeve that extends above and about the base, the second cylindrical sleeve having a continuous diameter substantially identical to the lower and the upper diameters of the first sleeve, the second cylindrical sleeve formed with a plurality of air holes, said first coupling end portion of said coupling sleeve unit cooperating with said base to define the annular draining passage therebetween, wherein said draining passage has a lower passage section being a cylindrical shaped passage defined between said lower portion of the first sleeve and said lower end portion of said base so as to drain water onto the roof structure, and a middle passage section defined between the middle portion of the first sleeve and the base having an outer concave curved ring shaped passage, and an upper passage section defined between said upper portion of the first sleeve and said upper end portion of said base and having a funnel shaped passage with a top portion having a substantially wider passage thereto than a bottom portion; the mounted fan in said coupling sleeve unit operable so as to exhaust air outwardly of the structure via said air holes in said second coupling end portion of said coupling sleeve unit, the mounted fan being positioned above the funnel shaped passage and the concave curved ring shaped passage and the cylindrical shaped passage; and a cover unit including a cover body disposed on the second cylindrical sleeve of said second coupling end portion of said coupling sleeve unit, and a supporting frame interconnecting fixedly said cover body and said coupling sleeve unit.