A secondary condensate drop-front drain pan comprises a drainage basin formed by a main basin portion, an auxiliary basin portion, and sidewalls that extend upwardly around a perimeter of the drain pan from both the main and auxiliary basin portions. The auxiliary basin portion, which is located alo
A secondary condensate drop-front drain pan comprises a drainage basin formed by a main basin portion, an auxiliary basin portion, and sidewalls that extend upwardly around a perimeter of the drain pan from both the main and auxiliary basin portions. The auxiliary basin portion, which is located along a side of the pan, is stepped down relative to the main basin portion. A transition portion between the main and auxiliary basin portions may be flexible or convertible and operative to configure the drain pan between a stepped configuration and a standard or substantially flat configuration. Downwardly extending projections or lugs may descend below the plane of the drainage basin to form notches or saddles for straddling or mounting the drain pan to support beams. The drain pan may be nestably stackable.
대표청구항▼
1. A drop-front secondary condensate drain pan for installation under an air handling unit, the drain pan comprising: an upper base portion;a trough portion located along a side of the drain pan and stepped down from the upper base portion;wherein the drain pan is configured for mounting the upper b
1. A drop-front secondary condensate drain pan for installation under an air handling unit, the drain pan comprising: an upper base portion;a trough portion located along a side of the drain pan and stepped down from the upper base portion;wherein the drain pan is configured for mounting the upper base portion upon at least one support beam with the trough portion descending along or near a side or end of the support beam and below a portion of the support beam supporting the upper base portion;a transitional section between the trough portion and the upper base portion that defines a substantially vertical, downwardly sloping surface configured to abut the drain pan to a vertical face of the support beam; andsidewalls around a perimeter of the drain pan extending upwardly from the upper base and trough portions, wherein the drain pan is contoured so that its sidewalls flare outwardly so that the drain pan is nestably stackable with another drain pan;wherein the drain pan is configured to capture condensate that overflows from a primary drain pan of the air handling unit that is mounted above the drain pan. 2. The drain pan of claim 1, further comprising downwardly facing projections along the outside of the sidewalls, the projections being spaced for mounting a support beam. 3. The drain pan of claim 2, wherein the downwardly facing projections form a channel of approximately 1.5 to 2 inches in width to straddle an elongated support beam having a nominal 2-inch width. 4. The drain pan of claim 1, further comprising frame members for supporting the drain pan, at least some of the frame members extending beyond the perimeter of the drain pan for attachment to hanging members to hang the drain pan from overhead beams. 5. The drain pan of claim 1, further comprising integrally formed risers that extend upwardly from the upper base portion to provide a raised support surface capable of supporting the air handling unit. 6. The drain pan of claim 1, further comprising downwardly projecting lugs descending below the upper base portion and configured for straddling a support beam. 7. The drain pan of claim 6, wherein the lugs are integrally molded with the drain pan. 8. The drain pan of claim 6, wherein the sidewalls bend outwardly and downwardly to form an upper reinforcing lip, and continue downwardly in at least portions to form the straddle lugs that project below the drainage basin. 9. The drain pan of claim 6, wherein the drain pan is contoured so that its downwardly projecting lugs flare outwardly so that the drain pan is operable to be nestably stacked with another drain pan. 10. The drain pan of claim 6, wherein the downwardly projecting lugs are flexible so that they can be bent toward a horizontal direction to enable mounting of the drain pan on a flat platform. 11. The drain pan of claim 6, wherein the downwardly projecting lugs exist along opposite right and left sides of the drain pan to facilitate mounting of the drain pan to supports that run laterally beneath the drain pan. 12. The drain pan of claim 6, wherein the downwardly projecting lugs exist along a back sidewall to facilitate mounting of the drain pan to supports that run longitudinally beneath the drain pan. 13. A drop-front secondary condensate drain pan for installation under an air conditioning unit, the drain pan comprising: a main base portion;an auxiliary base portion located along a side of the drain pan;a convertible transition portion located between the main base portion and the auxiliary base portion, the convertible transition portion being operative to transition the drain pan between a stepped configuration, where the auxiliary base portion is vertically displaced below the main base portion to form a trough, and a standard configuration characterized by a non-stepped transition between main and auxiliary base portions;sidewalls around a perimeter of the drain pan extending upwardly from the main base portion, the convertible transition portion, and the auxiliary base portion;wherein the drain pan is configured to capture condensate that overflows from a primary drain pan of the air conditioning unit that is mounted above the drain pan. 14. The drain pan of claim 13, wherein the convertible transition portion is gusseted and relatively flexible. 15. The drain pan of claim 14, wherein the convertible transition portion is bendable and operable to expand and collapse along a plurality of fold lines. 16. The drain pan of claim 13, wherein the convertible transition portion comprises one or more living hinges. 17. The drain pan of claim 13, wherein the main base portion is configured to capture condensate that overflows from the primary drain pan of the air conditioning unit that is mounted above the drain pan and to direct the overflow condensate to the auxiliary base portion. 18. The drain pan of claim 13, wherein the auxiliary base portion is configured to gather the condensate toward a drainage outlet. 19. A drop-front secondary condensate drain pan for installation under an air handling unit, the drain pan comprising: a main base portion configured to be mounted on a support beam;an auxiliary base portion;a transitional portion between the main base portion and the auxiliary base portion that defines a substantially vertical, downwardly sloping surface configured to abut the drain pan to a vertical face of the support beam; andsidewalls around a perimeter of the drain pan extending upwardly from the main base portion, auxiliary base portion, and transitional portion;wherein the drain pan is configured to capture condensate that overflows from a primary drain pan of the air conditioning unit that is mounted above the drain pan. 20. The drain pan of claim 19, wherein the transitional portion is operative to transition the drain pan between a stepped configuration, where the auxiliary base portion is vertically displaced below the main base portion to form a trough, and a standard configuration characterized by a non-stepped transition between the main base portion and the auxiliary base portion.
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