Condensate Drain Pan

Abstract

A condensate drain pan in particular for use in combination with a HVAC system, comprising a sump, an inlet and an outlet for gases, in particular combustion gases, as well as an outlet for condensate. The sump is made of a non-corrodible or corrosion-resistant material, such as a chemically inert-synthetic plastics material, in particular a thermoplastic elastomer, preferably elastic thermoplastic copolyester. The pan may be produced by rotational molding, preferably as one piece. The invention also concerns a HVAC system provided with such condensate drain pan.

What is claimed is: 
     
         1 . A single part condensate drain pan for use in combination with a HVAC system, comprising
 a sump,   an inlet, an outlet for combustion gases, as well as an outlet for condensate, and   wherein at least the sump is made of a non-corrodible or corrosion-resistant material.   
     
     
         2 . A condensate drain pan according to  claim 1 , wherein the sump is of a chemically inert-synthetic plastics material. 
     
     
         3 . A condensate drain pan according to  claim 1 , wherein the plastic material is an elastic thermoplastic polymer. 
     
     
         4 . A condensate drain pan according to  claim 1 , wherein the sump is manufactured by rotational molding. 
     
     
         5 . A condensate drain pan according to  claim 1 , wherein one or more of the inlet for gases, the outlet for gases, the outlet for condensate and a siphon form an integral part of the sump. 
     
     
         6 . A condensate drain pan according to  claim 1 , wherein the sump is provided with an inspection port. 
     
     
         7 . A condensate drain pan according to  claim 6 , wherein one or more of the inlets, outlets, siphon and inspection ports is provided with thread. 
     
     
         8 . A condensate drain pan according to  claim 6 , wherein the inspection port is provided with a cover. 
     
     
         9 . A condensate drain pan according to  claim 1 , wherein the sump has a profiled internal bottom. 
     
     
         10 . A condensate drain pan according to  claim 1 , wherein the condensate drain pan is suitable for placement on a surface. 
     
     
         11 . A condensate drain pan according to  claim 10 , wherein the condensate drain pan has a support surface to support the HVAC system or a part thereof. 
     
     
         12 . A condensate drain pan according to  claim 10 , wherein the condensate drain pan is provided with reinforcements. 
     
     
         13 . An HVAC system provided with a condensate drain pan according to  claim 1 . 
     
     
         14 . A multi-piece mold for manufacturing a condensate drain pain comprising
 a left portion,   a right portion, wherein the left and right portion provide an outlet, a sump, and an outlet, and   a top portion providing an inlet.   
     
     
         15 . A method of producing a condensate drain pan according to  claim 1 , comprising the steps of
 providing a three or four part mold,   combining the mold,   providing a thermoplastic elastomer, and   forming the condensate drain pain by rotational molding.   
     
     
         16 . The condensate drain pan according to  claim 2 , wherein the plastics material is a thermoplastic elastomer. 
     
     
         17 . The condensate drain pan according to  claim 3 , wherein the plastics material is a copolyester. 
     
     
         18 . The condensate drain pan according to  claim 17 , wherein the copolyester is one or both of polypropylene copolymer and polyphenylene sulphide. 
     
     
         19 . The condensate drain pan according to  claim 10 , wherein the condensate drain pan is provided with legs. 
     
     
         20 . The method of  claim 15 , wherein the thermoplastic elastomer is an elastic thermoplastic copolyester. 
     
     
         21 . The method of  claim 20  wherein the copolyester is one or both of polypropylene copolymer and polyphenylene sulphide.