One-piece float switch housing and drain line assembly with condensate collection pan

• US 7,878,019 B2
• Filed: 06/30/2006
• Issued: 02/01/2011
• Est. Priority Date: 06/30/2006
• Status: Active Grant

• Current Assignee: RectorSeal, LLC (CSW Industrials, Inc.)
• Original Assignee: Christopher Ralph Cantolino
• Inventors: Cantolino, Christopher Ralph
• Primary Examiner(s): Jones; Melvin
• Application Number:
  US11/478,904
• Publication Number:
  US 20080000250A1
• Time in Patent Office: 1,677 Days
• Field of Search: 622/72, 622/79, 622/85
• US Class Current: 62/285
• CPC Class Codes: F24F 13/222 for evacuating condensate
• CPC Class Codes: F24F 2140/30 Condensation of water from cooled air
• CPC Class Codes: F25D 21/14 Collecting or removing condensed and defrost water; Drip trays

Abstract

A one-piece liquid-level float switch housing and drain line assembly for use with a collection tray or pan to collect condensate and shut off the source of condensate production when it exceeds a pre-established threshold level. The assembly is configured for rapid connection through a pre-formed drain line opening in the perimeter wall of a condensate collection tray/pan to place the deployable float body within its housing in a level orientation relative to the tray/pan without additional leveling adjustment. The housing has an open bottom and vertically-extending slots providing fluid inlet, debris blocking, and air venting functions for enhanced float body operation. The condensate pan/tray used with the assembly has a nesting configuration that includes a perimeter wall with varying combinations of gussets, curved ribs, angled corner configurations, and support shelves, and a central bottom surface with raised patterns, all of which strengthen the tray/pad during installation and use.

Claims

1. A one-piece assembly for use with a source of condensate production and a condensate collection pan having a preformed drain line opening, said assembly also used with a vertically deployable float body that rises with rising levels of collected condensate and sends a signal to shut off the source of condensate production when a pre-established threshold level of collected condensate is reached in the pan, said assembly comprising:

a liquid-level float switch housing member having a hollow interior with diameter and height dimensions configured for vertical movement therein of a deployable float body, said housing also having a slotted configuration adapted for providing fluid inlet, debris blocking, and air venting functions for reliability of float body deployment, said housing further having an open bottom end and a top opening; and

a drain line connection member secured in fixed orientation to said float switch housing member, said drain line connection member configured with a substantially planar mounting plate having a drain line bore therethrough, said drain line connection member also having a drain line connector rearwardly-depending from said mounting plate, and wherein said drain line connection member further comprises opposed and substantially rearwardly-depending lateral protrusions configured for securely engaging complementary stabilizing support structure associated with the preformed drain line opening of a condensate collection pan.

2. The assembly of claim 1 wherein said drain line connection member further comprises at least one horizontally-extending corner rib secured between said mounting plate and each of said rearwardly-depending lateral protrusions.

3. The assembly of claim 1 further comprising a rigid connection member secured in fixed orientation between said liquid-level float switch housing member and said drain line connection member.

4. The assembly of claim 1 wherein said float switch housing member has a bottom edge and at least one cutout area in said bottom edge adapted to improve condensate drainage from float switch housing member.

5. The assembly of claim 1 wherein said liquid-level float switch housing member and said drain line connection member are made from sturdy plastic materials.

6. The assembly of claim 1 wherein said drain line connection member has a bottom front edge and a flange forwardly-extending from said bottom front edge.

7. The assembly of claim 1 wherein said drain line bore of said mounting plate has a bottom portion, and further comprising a dam positioned to block condensate flow through said bottom portion, and where said dam is selected from a group consisting of permanently installed dams and break-out dams that can be readily removed from their manufactured position via hand pressure.

8. The assembly of claim 1 further comprising male threads behind said mounting plate on said drain line connection member, in close proximity to said mounting plate.

9. The assembly of claim 1 further comprising a condensate collection pan having structure around its preformed drain line opening that is complementary to that of said substantially planar mounting plate and configured to securely mate with said mounting plate for long-term fixed positioning of said float switch housing member relative to said pan to prevent changes in said float switch housing member relative to said pan over time that could lead to malfunction of a deployable float body within said float switch housing member.

10. The assembly of claim 9 wherein said structure around said preformed drain line opening is configured as a support shelf.

11. The assembly of claim 9 wherein said pan further comprises structure-strengthening features selected from a group consisting of gussets, horizontally-extending curved ribs, angled corner configurations, horizontally-extending ridges between adjacent gussets, and support shelves in association with a perimeter wall, and raised patterns on a central bottom surface with and without attached high friction grommets.

12. The assembly of claim 11 wherein said curved ribs, angled corner configurations, support shelves and raised patterns each have a nesting configuration.

13. The assembly of claim 11 wherein said horizontally-extending curved ribs are each positioned on said perimeter wall adjacent to one of said support shelves.

14. The assembly of claim 11 wherein said central bottom surface has an area void of said raised patterns adjacent to said perimeter wall of sufficient size for placement of at least one information marking.

15. The assembly of claim 11 wherein said lateral protrusions rearwardly-depending from said mounting plate are configured to provide a secure wrap-around fit of said drain line connection member against one of said support shelves.

16. The assembly of claim 11 wherein said drain line connection member has a bottom front edge and a flange forwardly-extending from said bottom front edge, and further wherein said opposed lateral protrusions rearwardly-depending from said mounting plate are configured to provide a secure wrap-around fit of said drain line connection member against one of said support shelves.

17. A method for using the assembly of claim 1 with a condensate collection pan for condensate collecting purposes and to send a signal that stops condensate production when a pre-established threshold level of collected condensate is reached in the pan, said method comprising the steps of:

providing said assembly, a condensate collection pan with a pre-formed drain line opening, a float body and guide shaft, an O-ring, a connection nut with female threads;

securing said float body and guide shaft within said hollow interior of said switch housing member of said assembly;

inserting said drain line connection member of said assembly through said pre-formed drain line opening until said drain line bore is adjacent to said pre-formed drain line opening;

placing said O-ring on said drain line connection member in a position close behind said mounting plate; and

securely tightening said connection nut over said drain line connection member to provide a watertight seal between said assembly and said pan.

18. The method of claim 17 wherein the order of said steps of securing said float body and guide shaft and inserting said drain line connection member of said assembly through said pre-formed drain line opening may be reversed, and also wherein the order of said steps of inserting said drain line connection member of said assembly through said pre-formed drain line opening and placing said O-ring on said drain line connection member may be reversed.

19. The method of claim 17 wherein said drain line connection member has a distal end, and further comprising the steps of providing a plug and using said plug within said distal end of said drain line connection member said to block condensate flow through said drain line bore when use of said drain line connection member to discharge condensate from said pan is no longer required.

37. The assembly of claim 1 wherein said drain line connection member further comprises

a tubular member rearwardly-depending from said mounting plate, said tubular member being in fluid communication with said bore and having a diameter dimension smaller than the pre-formed drain line opening;

and

said drain line connecting member further comprises attachment means adapted for leak-proof securing of said tubular member adjacent to the pan after said tubular member is inserted through the pre-formed drain line opening so that said mounting plate becomes positioned within the pan and adjacent to it.

38. The assembly of claim 37 wherein connection between said tubular member and said attachment means of said drain line connection member is at least in part a threaded connection.

39. The assembly of claim 37 wherein said attachment means of said drain line connection member comprises at least one o-ring.

40. The assembly of claim 37 wherein said drain line connection member further comprises opposed and substantially rearwardly-depending lateral protrusions.

41. The assembly of claim 40 wherein said drain line connection member further comprises at least one horizontally-extending corner rib secured between said bore plate and each of said rearwardly-depending lateral protrusions.

42. The assembly of claim 37 wherein said drain line connection member further comprises a rigid connection member attaching a liquid-level float switch housing member to said drain line connection member.

43. The assembly of claim 37 wherein said drain line connection member further comprises a bottom front edge and a flange forwardly-extending from said bottom front edge.

44. The assembly of claim 37 wherein said bore of said mounting plate has a bottom portion, and further comprising a dam positioned to block condensate flow through said bottom portion, and where said dam is selected from a group consisting of permanently installed dams and break-out dams that can be readily removed from their manufactured position via hand pressure.

45. The assembly of claim 37 wherein said drain line connection member further comprises male threads behind said mounting plate in close proximity to said mounting plate.

46. The assembly of claim 37 wherein said drain line connection member has a bottom front edge and a flange forwardly-extending from said bottom front edge, and further comprising opposed lateral protrusions rearwardly-depending from said mounting plate.

47. The assembly of claim 37 further comprising a condensate collection pan having mounting structure around a preformed drain line opening that is complementary to that of said mounting plate and configured to securely mate with said mounting plate for long-term fixed positioning of a float switch housing member relative to said pan to prevent changes in said float switch housing member relative to said pan over time that could lead to malfunction of a deployable float body within said float switch housing member.

48. The assembly of claim 47 wherein said mounting structure around said preformed drain line opening is configured as a support shelf.

49. The assembly of claim 47 wherein said pan comprises features selected from a group consisting of a central portion with a plurality of risers spaced apart from one another that are configured and adapted for collective support at least in part of a condensate producing system, a perimeter wall around said central portion and having at least one preformed drain line opening and mounting structure around said at least one preformed drain line opening configured for secure positioning and long-term fixed orientation of a float switch housing member relative to said pan that resists changes over time which could lead to malfunction of a deployable float body within the float switch housing member, a plurality of strengthening gussets between said central portion and said perimeter wall, a plurality of resilient grommets in association with said risers and positioned for use between said risers and a condensate producing system supported by said risers, an area in said central portion without said risers adjacent to said perimeter wall of sufficient size for placement of at least one information marking, horizontally-extending curved ribs, angled corner configurations, and horizontally extending ridges between adjacent ones of said gussets.

50. The assembly of claim 49 wherein said mounting structure around said preformed drain line opening is configured as a support shelf.

51. The assembly of claim 49 wherein said risers, said central portion, said perimeter wall, said mounting structure, said gussets, said horizontally-extending curved ribs, said angled corner configurations, and said horizontally-extending ridges each have a nesting configuration adapted for compact transport and storage of said pan.

52. The assembly of claim 47 wherein said pan is made from materials selected from a group consisting of polycarbonate, an ABS/polycarbonate blend, an ABS/polycarbonate blend that is impervious to corrosion, materials used for injection molding manufacture, materials used for thermoform construction, UV-resistant materials, non-flammable materials, and impact-resistant materials.

20. A pan for use in providing a drain line opening for transport out of said pan any surplus condensate accumulating in said pan from an associated condensate producing system, said pan comprising:

a central portion with a plurality of risers spaced apart from one another that are configured and adapted for collective support at least in part of a condensate producing system;

a perimeter wall around said central portion and having at least one preformed drain line opening and mounting structure around said at least one preformed drain line opening configured for secure positioning and long-term fixed orientation of a float switch housing member relative to said pan that resists changes over time which could lead to malfunction of a deployable float body within the float switch housing member; and

a plurality of strengthening gussets between said central portion and said perimeter wall.

21. The pan of claim 20 further comprising a plurality of resilient grommets in association with said risers and positioned for use between said risers and a condensate producing system supported by said risers.

22. The pan of claim 20 wherein said central portion has an area without said risers adjacent to said perimeter wall of sufficient size for placement of at least one information marking.

23. The pan of claim 20 made from materials selected from a group consisting of polycarbonate, an ABS/polycarbonate blend, an ABS/polycarbonate blend that is impervious to corrosion, materials used for injection molding manufacture, materials used for thermoform construction, UV-resistant materials, non-flammable materials, and impact-resistant materials.

24. The pan of claim 20 wherein said risers, said central portion, said perimeter wall, said mounting structure, and said gussets, each have a nesting configuration adapted for compact transport and storage of said pan.

25. The pan of claim 20 further comprising structure-strengthening features selected from a group consisting of horizontally-extending curved ribs, angled corner configurations, horizontally-extending ridges between adjacent ones of said gussets.

26. The pan of claim 25 wherein said risers, said central portion, said perimeter wall, said mounting structure, said gussets, said horizontally-extending curved ribs, said angled corner configurations, and said horizontally-extending ridges each have a nesting configuration adapted for compact transport and storage of said pan.

27. The pan of claim 25 wherein said at least one mounting structure is configured as a support shelf.

28. The pan of claim 27 wherein said horizontally-extending curved ribs are positioned on said perimeter wall adjacent to said at least one support shelf.

29. The pan of claim 28 further comprising an assembly configured to provide a drain line opening for transport out of said pan any surplus condensate accumulating in said pan from an associated condensate producing system, said assembly comprising a drain line connection member configured with a substantially planar mounting plate adapted for attachment with said at least one support shelf, a drain line bore through the mounting plate, and a drain line connection member rearwardly-depending from the mounting plate.

30. The pan of claim 29 wherein said assembly further comprises a float switch housing member and secure engagement of said assembly mounting plate to said at least one support shelf of said pan securely fixes said float switch housing in orientation relative to said pan and prevents changes in said float switch housing member relative to said pan over time that could lead to malfunction of a deployable float body within said float switch housing member, said float switch housing member containing during use a vertically-deployable float body configured and positioned to rise with rising levels of condensate collected in said pan and sends a signal to shut off the condensate producing system when a pre-established threshold level of collected condensate is reached in said pan.

31. The pan of claim 30 further comprising a rigid connection member secured in fixed orientation between said float switch housing member and said mounting plate.

32. The pan of claim 29 wherein said mounting plate further comprises at least one horizontally-extending corner rib secured between said rearwardly-depending drain line connection member and each of said rearwardly-depending lateral protrusions.

33. The pan of claim 29 wherein said mounting plate has a bottom front edge and a flange forwardly-extending from said bottom front edge.

34. The pan of claim 29 wherein said mounting plate comprises opposed and substantially rearwardly-depending lateral protrusions configured for wrap-around attachment of said mounting plate to said at least one support shelf.

35. The pan of claim 34 wherein said mounting plate further comprises at least one horizontally-extending corner rib secured between said drain line bore and each of said rearwardly-depending lateral protrusions.

36. A pan for use with an assembly configured to provide a drain line opening for transport out of said pan any surplus condensate accumulating in said pan from an associated condensate producing system, the assembly comprising a drain line connection member configured with a substantially planar mounting plate, a drain line bore through the mounting plate, and a drain line connection member rearwardly-depending from the mounting plate, said pan comprising:

a central portion with a plurality of risers spaced apart from one another that are configured and adapted for collective support at least in part of a condensate producing system;

a perimeter wall around said central portion and at least one support shelf with a preformed drain line opening therein, said at least one support shelf being configured and dimensioned for secure engagement of the assembly mounting plate thereto; and

a plurality of strengthening gussets between said central portion and said perimeter wall, whereby as a result of said secure engagement said pre-formed drain line opening becomes aligned with the mounting plate drain line bore and the drain line connection member rearwardly-depending from the mounting plate becomes securely engaged with and fixed in orientation relative to said pre-formed drain line opening.