Patent ID: 7387262

Claim:
An apparatus for the heating of two dissimilar fluids comprising: a housing having an internal heat generating chamber and an external heat extracting surface, wherein one of said two dissimilar fluids is a viscous fluid disposed in said heat generating chamber, the other of said two dissimilar fluids is the heat extracting fluid for direct contact with said heat extracting surface; and further comprising a rotatable unit disposed centrally in said heat generating chamber and mounted for rotation within said heat generating chamber about an axis of rotation and a displaceable element in fluid communication with said heat generating chamber, wherein said rotatable unit further comprises a fluid shearing surface formed on a face thereof, a series of holes disposed in the interior of said rotatable unit, at least one internally disposed fluid passageway disposed in said rotatable unit, said rotatable unit further comprising an entrance port formed on a further face thereof and said fluid passageway fluidly connecting with said series of holes to supply said viscous fluids to said fluid shearing surface, and further comprising at least one fluid throttling orifice disposed in at least one of said series of holes.