Патент USA US2107504код для вставки
_ Feb. 8, 1938. ' A. A. REA 2,107,504 DRAFT PROMOTER FOR FURNACES FilEd 061;. 9, 1936 5 Sheets-Sheei 1 Aiiomqeys Feb. 8, i938. ' A. A. REA 2,107,504 DRAFT PROMOTER FOR FURNACES Filed 001.. 9, 1956 3 Sheets-Sheet 2 Feb, 8, 1938. A A_ REA , 2,107,504 DRAFT PROMOTER FOR FURNACES Filed Oct. 9, 1936 5 Sheets-Sheet 5 _ _Aiiorneys Patented Feb. 8, 1938 2,107,504 * UNITED STATES PATENT OFFICE 2,107,504 DRAFT PROMOTER FOR FURNACES Arthur A. Rea, La Grande, Oreg. Application October 9, 1936, Serial No. 104,884 1 Claim. (Cl. 230-134) This invention appertains to‘ a blower for fur rotor l5 serve to retain the rotor in proper posi nace constructions, and more particularly to a tion on the shaft. furnace of the hot air type. r The principal object of the invention is to 5 provide a blower for a hot air furnace wherein means is provided for circulating the hot air under force. Another important object of the invention is to provide a blower for a hot air furnace where 10 in hot air can be delivered under force through the agency of means which will not cost much to install on conventional hot air furnaces. These and various other important objects and advantages of the invention will become appar 15 ent to the reader of the following speci?cation. In the drawings:—v Figure 1 represents a top plan view of the furnace. ' Fig. 2 represents a bottomplan view of the 20 dome with the blower therein. Fig. 3 represents a vertical sectional view through the furnace. VThe dome H is provided with outlets l9 to hich pipes can be connected and through which air can be supplied to the various parts of a 5 building. ' As shown in Fig. 6, numeral 20 generally refers to a spider which consists of a plurality of radi ally disposed arms 2| radiating from a common central point 22 and are provided with suitable 10 openings 23 whereby the arms can be riveted to the bottom side of the conical-shaped rotor 15 so as to reinforce the same. Elongated transversely curved blades 24 are secured to the bottom side of the rotor l5 and 15 these blades increase in thickness outwardly in proportion to the pitch of the rotor l5. Thus it can be seen, that when the motor 25 which is located on the top of the dome H is started, the belt 26 which is driven by a pulley 20 of the motor and is trained over the pulley I‘! on the shaft l6, will drive the shaft l6 and rotor l5 so that the blades 24 will effect a pull and Fig. 4 represents a side elevational view of the rotor.’ 25 Fig. 5 represents a perspective view of the blade carrier of the rotor. Fig. 6 represents a vertical sectional view draw air upwardly through the shell 9 and force the same outwardly through the openings l9 into 25 the various conduits of the hot air system. 30 merals designate like parts, it can be seen in invention in speci?c terms, it is to be under stood that numerouschanges in the shape, size and materials may be resorted to without de- 3 through the rotor spider. Referring to the drawings wherein like nu r Fig. 3, that numeral 5 represents generally a furnace which consists of the ?re box 6, the ash box 1 and the heating drum 8. Spatially dis ' posed around the furnace structure 5 is the shell 35 9 which has'the air inlet conduit I0 at its lower end. The top of the shell 9 is provided with the dome l l which is provided with side wall portions l2 and a depending apron I 3 which rests upon 40 the upper edge of the shell 9. An inwardly curved ?ange i4 is provided on the inside of the apron 13 so as to direct Warm air passing upwardly above the drum 8 toward the inverted conical shaped rotor I 5 through the apex of which the shaft 16 is disposed. The shaft l6 extends down wardly through the dome H and is supported in this position by the bearing l1. Jamb nuts or the like l8 above and below the apex ‘portion of the While the foregoing speci?cation sets forth the . parting from the spirit and scope of the invention - as claimed hereinafter. Having described the invention, what is claimed as new is: A draft promoter comprising a rotor, said rotor 35 being of inverted conical shape, a frame struc~ ture having diverged arm portions, means for securing the frame to the bottom side of the rotor, blades secured to the bottom side of the rotor, said means for securing the frame to the 40 rotor and also serving to secure the blades to the rotor, the central portion of the said frame crossing the apex portion of the rotor, a shaft provided with bearing means and having its lower ends secured both to the apex and central por- 45 tions of the rotor and frame respectively, and means at the upper end of the shaft to rotate said rotor. ARTHUR A. REA.