Evaporative heat exchanger
OwnerRobert T. Tippmanninventor
Life of this patent
Estimating the term…
Abstract
A heat exchanger is disclosed having a coil positioned between an outer casing member with a bottom having a sump formed therein and an inner casing member containing a rotatable shaft to which a fan is mounted. The fan has a first stage or set of blades which pushes air from the outside down over the coils and a second stage or set of blades having a pitch opposite the first set for pulling the air up through the inner casing member to exhaust. A distributor having a pump which operates on centrifugal force is also provided which draws a liquid heat transfer medium preferably water from the sump and rotates with the fan blades to effectively "sling" the medium over the coils as the fan rotates.
Claims11
A heat exchange apparatus for fluids comprising:
- (a) an outer casing member having a bottom wall enclosing one end thereof,
- (b) an inner casing member having an outer surface spaced from said outer casing and defining with said outer casing a first chamber with an inlet opening at one end and an outlet opening at the other end disposed above said bottom wall, said inner casing member having an inner surface defining a second chamber having an outlet opening and an inlet opening adjacent to the outlet opening of said first chamber,
- (c) wetted surface means located in said first chamber, and
- (d) fan means superimposed above both said first and second chambers, said fan means having blade means common to both said first and second chambers and capable of simultaneously pushing air into said inlet opening of said first chamber, over said wetted surface means and pulling said air out said outlet opening of said second chamber when rotated.
A heat exchange apparatus for fluids comprising:
- (a) an outer casing member having a bottom wall enclosing one end thereof,
- (b) an inner casing member having an outer surface spaced from said outer casing and defining with said outer casing a first chamber with an inlet opening at one end and an outlet opening at the other end disposed above said bottom wall, said inner casing member having an inner surface defining a second chamber having an outlet opening and an inlet opening adjacent to the outlet opening of said first chamber,
- (c) wetted surface means located in said first chamber, and
- (d) fan means superimposed above both said first and second chambers, said fan means comprising first and second sets of fan blades mounted for rotation in the same direction said first set of fan blades being positioned at a pitch opposite in direction to the direction of the pitch of said second set of fan blades to simultaneously push air into said inlet opening of said first chamber, over said wetted surface means and pull said air out said outlet opening of said second chamber when rotated.
Dependencies are inferred from the claim text.