Patent ID: 9074812
Filing Date: 2015-07-07
Classification: B65D,F24F,F25D

Abstract:
1. A secondary drain pan configured to be placed under an air handling unit to secure and drain any excess condensate that overflows from a primary drip pan of the air handling unit and to support the air handling unit apart from any drainage, the secondary drain pan comprising: a base; a lip extending upward from a perimeter of the base, the lip securing drainage on the base; at least two risers extending upward from the base and substantially across the base, each riser having riser portions comprising: side walls that extend upward from the base, a bottom of the side walls turning into the base such that an inner surface of the riser portions turns outward to form a bottom surface of the base; an upper support surface capable of supporting at least a portion of the air handling unit thereon, an outer surface of the side walls turning laterally inward to form the upper support surface; and at least one rib disposed along the side walls that increases load-bearing ability of the riser; and a supportive structure disposed between the riser portions, the supportive structure having less height than the riser support surfaces; wherein the upper support surface is wider at the at least one rib; wherein the riser portions about the at least one rib comprise a substantially frustoconical cross-section; wherein the riser portions connect at an angle such that the riser portions form one longer riser, wherein a distance between the risers varies along a length of the at least two risers; each riser enclosed from above and from the sides, limiting air or water from passing through the riser so that any drainage descends to the base, the upper support surfaces positioned above the lip to support the air handling unit above the lip and apart from any drainage on the base; wherein at least a portion of the side walls of each riser and at least one end of each riser tapers to the base such that drainage on the base may flow around the at least one end such that a drainage opening interfacing the base through the lip allows the drainage to flow freely out of the base; wherein the base, the lip, the at least one rib, and the risers are molded as a unibody drain pan with integrated support; wherein at least the risers are shaped to be nestably stackable with risers of another similarly shaped secondary drain pan; and wherein the riser portions comprise conical sharps, pyramidal sharps, rectangular sharps, triangular sharps, or a combination thereof.