Modular drain pan assembly for adjacent horizontally positioned dual-pass cooling coils

Abstract

A combination modular drain pan and horizontally positioned cooling coil assembly, providing dual pass dehumidification, including a housing, a plurality of adjacent discrete horizontal cooling coils each receiving air from an air distribution manifold. The air distribution manifold receives air from a inlet air stream and forming a single large horizontally positioned cooling coil module assembly. Each discrete horizontal cooling coil has a respective heat exchange area directly thereabove and a drain pan therebelow.

I claim: 
     
         1 . A combination modular drain pan and horizontally positioned cooling coil assembly, providing dual pass dehumidification, comprising:
 a housing;   a plurality of adjacent discrete horizontal cooling coils,   said plurality of adjacent discrete horizontal cooling coils each receiving air from an air distribution manifold;   said air distribution manifold receiving air from a inlet air stream and forming a single large horizontally positioned cooling coil module;   each said discrete horizontal cooling coil having a respective air reversal plenum thereunder and a respective sloped drain pan under each said respective air reversal plenum;   each discrete horizontal cooling coil having a respective heat exchange area directly thereabove, each said heat exchange area having at least one heat exchanger therein;   said air distribution manifold having a common outlet for said air stream contacting said respective adjacent discrete horizontal cooling coils.   
     
     
         2 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 1  further comprising at least one heat exchanger positioned above said horizontally positioned cooling coil assembly. 
     
     
         3 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 1  wherein said manifold includes respective air inlet and outlet regions, said manifold positioned above said at least one heat exchanger for introduction of said inlet air therein and for expelling said outlet air therefrom, after said inlet air communicates with said cooling coil assembly and said air reversal plenum prior to said inlet air becoming said outlet air by then traversing said cooling coil assembly, said at least one heat exchanger and said manifold. 
     
     
         4 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 2  wherein said at least one heat exchanger is a plate type heat exchanger. 
     
     
         5 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 2  wherein said at least one heat exchanger is a heat pipe heat exchanger. 
     
     
         6 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 1  wherein said housing is a pre-assembled housing having at least one recess for insertion of at least one-discrete horizontal cooling coil therein. 
     
     
         7 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 6  wherein each said discrete horizontal cooling coil is slidably insertable upon side angle profile supports within said recess of said pre-assembled housing. 
     
     
         8 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 7  further comprising each said discrete horizontal cooling coil being retained by a plurality of baffles and opposite end plates accommodating each said slidably insertable discrete horizontal cooling coil therein; wherein further said end plates and said baffles each having at least one elastomeric seal sealing said end plates and said baffles to an interior surface of said recess of said pre-assembled housing accommodating said insertable discrete horizontal cooling coil therein, whereby each said insertable discrete horizontal cooling coil is slidably removable from said recess of said pre-assembled housing for repair or maintenance thereof. 
     
     
         9 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 1  wherein said air distribution manifold is triangular in crossection, wherein the apex of said triangular cross sectional manifold extends axially parallel to the longitudinal axis of said cooling coil assembly; said manifold having a series of inlet plenums for inlet of said incoming air stream, said inlet apertures adjacent to a series of outlet plenums, each said inlet plenum and said outlet plenum being triangular in crossection and having an apex extending parallel to the longitudinal axis of said cooling coil assembly, said cooling coil assembly having a coolant manifold extending horizontal and perpendicular to the longitudinal axis of said cooling coil assembly. 
     
     
         10 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 1  wherein said horizontal cooling coil assembly is a plurality of discrete horizontal cooling coils. 
     
     
         11 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 4  wherein said plate type heat exchanger is a plurality of plate type heat exchangers. 
     
     
         12 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 4  wherein said plate type heat exchanger is a cross flow plate type heat exchanger, comprising a heat exchange body having a diamond shaped crossection, said cross flow plate type heat exchanger having a longitudinal axis extending horizontally and perpendicular to the longitudinal axis of said cooling coil assembly, each said discrete cooling coil having at least one drain pan thereunder. 
     
     
         13 . The combination modular drain pan and horizontally positioned cooling coil assembly in  claim 5  wherein said at least one heat pipe heat exchanger is a plurality of heat pipe heat exchangers. 
     
     
         14 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 8  wherein said elastomeric seal is a plurality of seals providing a sealed fit for each said discrete cooling coil in a variable dimension region between a top of each discrete cooling coil and a bottom of a respective heat exchange area above each said discrete cooling coil. 
     
     
         15 . The combination modular drain pan and horizontally positioned cooling coil assembly as in  claim 14  wherein each said variable dimension region has a height taller than a height of each respective seal, wherein when each said discrete cooling coil is inserted above a respective coil support, said respective discrete cooling coil is raised by said respective coil support to provide a tight fit for said respective seal between said top of said respective discrete cooling coil and said bottom of said respective heat exchange area.