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US 4,133,375 AGranted
Vertical heat exchanger
AssigneeUnice Machine Company
InventorsJoseph C. V. Ducasse, Jean Bouvet
Life of this patent
Estimating the term…
Abstract
A cylindrical shell has a conical bottom with a central outlet therein. A hollow central shaft is rotatably and vertically supported within the center of the shell and has attached thereto at least one heat exchange element including lower and upper radial tubes. Hollow rectangular ducts extend vertically between the upper and lower radial tubes. Heat exchange fluid flows from the upper end of the shaft, radially outwardly through the lower radial tubes, upwardly through the rectangular ducts, radially inwardly through the upper radial tubes, and to the upper end of the shaft.
Claims33
A heat exchanger unit comprising:
- a rotatably mounted hollow shaft having first and second ends;
- at least one heat exchange element concentrically surrounding and attached to said shaft, said element comprising:
- a first plurality of hollow radial members extending radially outwardly from said shaft;
- a second plurality of hollow radial members extending radially outwardly from said shaft;
- said first radial members being positioned further from said first end of said shaft than said second radial members, in the axial direction of said shaft;
- each first radial member being aligned in said axial direction with a respective said second radial member;
- each pair of adjacent said first radial members and the axially aligned pair of adjacent second radial members defining a cylindrical sector;
- and
- each said sector having extending in said axial direction at least one rectangular hollow duct, the interior of which is in communication with the interiors of the respective pairs of first and second radial members defining such sector;
- fluid inlet means for supplying heat exchange fluid from said first end of said shaft to said first radial members, whereby fluid flows radially outwardly through said first radial members, then axially through said hollow ducts, and then radially inwardly through said second radial members;
- and
- fluid outlet means for passing said fluid from said second radial members to said first end of said shaft.
9 more elements
An apparatus for the continuous heat treatment and stirring of a material, said apparatus comprising:
- a shell having an open top and a closed bottom;
- means for introducing material to be treated into an upper portion of said shell;
- a material outlet located in said bottom for removing treated material from said shell;
- a hollow shaft rotatably mounted substantially concentrically within said shell, said shaft having an upper end and a lower end;
- means for rotatably supporting said lower end of said shaft at a position adjacent said bottom of said shell;
- means, attached to said shaft adjacent said upper end thereof, for rotatably supporting said upper end of said shaft;
- at least one heat exchange element concentrically surrounding and attached to said shaft, said element comprising:
- a first plurality of hollow radial members extending radially outwardly from said shaft;
- a second plurality of hollow radial members extending radially outwardly from said shaft;
- said first radial members being positioned further from said upper end of said shaft than said second radial members;
- each first radial member being vertically aligned with a respective said second radial member;
- each pair of adjacent said first radial members and the vertically aligned pair of adjacent second radial members defining a cylindrical sector;
- and
- each said sector having at least one vertically extending rectangular hollow duct, the interior of which is in communication with the interiors of the respective pairs of first and second radial members defining such sector;
- fluid inlet means for supplying heat exchange fluid from said upper end of said shaft to said first radial members, whereby fluid flows radially outwardly through said first radial members, then vertically upwardly through said hollow ducts, and then radially inwardly through said second radial members;
- and
- fluid outlet means for passing said fluid from said second radial members to said upper end of said shaft.
14 more elements
An apparatus for the continuous heat treatment and stirring of a material, said apparatus comprising:
- a shell having an open top and a closed bottom;
- means for introducing material to be treated into an upper portion of said shell;
- a material outlet located in said bottom for removing treated material from said shell;
- a hollow shaft rotatably mounted substantially concentrically within said shell, said shaft having an upper end and a lower end;
- means for rotatably supporting said lower end of said shaft at a position adjacent said bottom of said shell;
- means, attached to said shaft adjacent said upper end thereof, for rotatably supporting said upper end of said shaft;
- a first heat exchange element concentrically surrounding and attached to said shaft, said first heat exchange element comprising;
- a first plurality of hollow radial members extending radially outwardly from said shaft;
- a second plurality of hollow radial members extending radially outwardly from said shaft;
- said first radial members being positioned further from said upper end of said shaft than said second radial members;
- each first radial member being vertically aligned with a respective said second radial member;
- each pair of adjacent said first radial members and the vertically aligned pair of adjacent second radial members defining a cylindrical sector;
- and
- each said sector having at least one first vertically extending rectangular hollow duct, the interior of which is in communication with the interiors of the respective pairs of first and second radial members defining such sector;
- first fluid inlet means for supplying a first heat exchange fluid from said upper end of said shaft to said first radial members, whereby said first fluid flows radially outwardly through said first radial members, then vertically upwardly through said first hollow ducts, and then radially inwardly through said second radial members;
- first fluid outlet means for passing said first fluid from said second radial members to said upper end of said shaft;
- a second heat exchange element concentrically surrounding and attached to said shaft at a position below said first heat exchange element, said second heat exchange element comprising:
- a third plurality of hollow radial members extending radially outwardly from said shaft;
- a fourth plurality of hollow radial members extending radially outwardly from said shaft;
- said third radial members being positioned further from said upper end of said shaft than said fourth radial members;
- each third radial member being vertically aligned with a respective said fourth radial member;
- each pair of adjacent said third radial members and the vertically aligned pair of adjacent fourth radial members defining a cylindrical sector;
- and
- each said sector having at least one second vertically extending rectangular hollow duct, the interior of which is in communication with the interiors of the respective pairs of third and fourth radial members defining such sector;
- second fluid inlet means for supplying a second heat exchange fluid from said upper end of said shaft to said third radial members, whereby said second fluid flows radially outwardly through said third radial members, then vertically upwardly through said second hollow ducts, and then radially inwardly through said fourth radial members;
- and
- second fluid outlet means for passing said second fluid from said fourth radial members to said upper end of said shaft.
24 more elements
Dependencies are inferred from the claim text.