Multiple outlet blower scroll for an industrial oven

Claim 1

An improved industrial oven of the type including a housing defining a work chamber, a duct system including a plurality of passages within said chamber, a plurality of heating elements mounted within said passages, a blower wheel mounted within said chamber and communicating with said duct system for forcing air through said passages so as to circulate hot air through said chamber, wherein the improvement comprises: a blower scroll mounted around said blower wheel; said scroll having a plurality of radial outlets, each said outlet being aligned with a single passage, to allow air to pass therethrough into said passages, said scroll defined by a plurality of short, curved circumferentially extending individual plates equal in number to the number of said outlets, said plates surrounding said wheel and of a size such that the circumferential face area of said wheel surrounded by each of said plates is the same, said plates being of a short length such that circumferential portions of said wheel are uncovered.