|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||416/122 ; 416/176 ; 416/DIG ; 3 ; 259/191|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 0|
A helical blade is provided for a mixing or conveying apparatus which can be used for heating or cooling or in general effecting a thermal treatment such as drying, evaporating calcining or crystallizing a product fed to the apparatus. The blade comprises a pair of pressed ring shaped discs welded together. One disc is shaped with its inner margin curved into or nearly into the axial direction, and the other disc is welded to it at its inner and outer margins. The blade may be welded directly to a shaft, mounted freely thereon or welded to blocks on the ...
A heat exchange apparatus comprising a shaft and a hollow helical blade mounted on and surrounding the shaft, said blade being made of pairs of helically shaped split discs, the first disc of each pair being shaped with its inner margin curved into or nearly into the axial direction, the remainder of the disc being substantially radial to the shaft, and the second disc being welded to the first disc at its inner edge to the outer surface of the inner margin of the first disc and its outer margin curved towards the first disc and welded to it, the remaind...