Housing with integral drain for removing condensate from a heating and air conditioning unit

• US 5,894,737 A
• Filed: 03/20/1997
• Issued: 04/20/1999
• Est. Priority Date: 03/20/1997
• Status: Expired due to Fees

• Current Assignee: Proair, LLC (ProAir Holdings Corp.)
• Original Assignee: Pro Air, Inc.
• Inventors: Haeck, Dennis Leon
• Primary Examiner(s): Sollecito, John M.
• Application Number:
  US08/828,735
• Time in Patent Office: 761 Days
• Field of Search: 62/272, 62/285, 62/288, 62/289, 62/290, 62/239, 62/244, 62/404, 62/407, 62/408, 165/42, 165/43, 165/111
• US Class Current: 62/285
• CPC Class Codes: B60H 1/3233 characterised by condensed liquid drainage means
• CPC Class Codes: F24F 13/222 for evacuating condensate

Abstract

An improved housing for draining condensed water from the interior of a heating and air conditioning unit installed in a motor vehicle. The contoured bottom wall of the housing includes a raised portion surrounded by a series of sloped channels which lead to a collection basin having a drain. A fan or blower forces air through the housing inlet and past the heating and cooling elements. A portion of one of the sidewalls adjacent the air inlet interrupts the entering air to create a low pressure area. Condensed moisture is drawn along the sloped channels towards a collection basin located in the low pressure area. A drain is provided in the collection basin to remove the moisture from the housing.

Claims

1. A device for draining condensed water from the interior of a heating and air conditioning unit of a motor vehicle, comprising:

a housing having a top wall and a bottom wall and a plurality of interconnecting sidewalls, said housing including an air inlet defined by one of said sidewalls and further including an air outlet, said housing defining an air flow path between said inlet and said outlet, said housing adapted to accommodate a heating element and a cooling element located in said flow path, said one sidewall and said bottom wall cooperating to define a collection basin;

a fan means mounted to said one sidewall for forcing air through and over said collection basin to define a region of low air pressure air flowing over said collection basin, said collection basin including a drain hole; and

said bottom wall includes a raised portion and, channeling means flanking said raised portion and integral with said bottom wall for channeling condensed water towards said collection basin so that the condensed water can exit said housing through said drain hole.

2. The device as claimed in claim 1, said air inlet including a lower edge defining a portion of said collection basin, said lower edge cooperating with the fan to create said low pressure area as the fan forces air through said inlet and into said housing.

3. The device as claimed in claim 1, wherein said channeling means includes a raised portion in said bottom wall, and said bottom wall includes a sloped area sloping from said raised portion towards said collection basin.

4. The device as claimed in claim 3, wherein said raised portion extends from an other of said sidewalls to said collection basin.

5. The device as claimed in claim 4, wherein said raised portion includes a plurality of sloped edges, said sloped edges being in flow communication with said channeling means.

6. The device as claimed in claim 5, wherein said channeling means surrounds said sloped edges of said raised portion.

7. The device as claimed in claim 3, wherein said channeling means includes a pair of channels, said channels surrounding a portion of said raised portion of said bottom wall, said channels defining said sloped area of said bottom wall.

8. The device as claimed in claim 1, wherein said drain includes an elongated tubular extension for communicating water out of said housing and out of the vehicle.

9. A device for draining condensed water from the interior of a heating and air conditioning unit of a motor vehicle, comprising:

a housing having an air inlet and an air outlet, said housing defining an air flow path between said inlet and said outlet;

said housing including a top wall and a bottom wall and a plurality of interconnecting sidewalls, a heating element and a cooling element within said flow path;

a fan mounted to one of said sidewalls adjacent said air inlet for forcing air through said housing along said flow path, said one sidewall and said bottom wall cooperating to define a collection basin, said collection basin including a drain hole; and

said bottom wall includes a raised portion and channeling means flanking said raised portion and integral with said bottom wall for channeling condensed water towards said collection basin, said channeling means including means responsive to said fan for interrupting a portion of said flow path to thereby create a region of low pressure air flowing over said collection basin, so that said low pressure region draws condensed water through said channeling means towards said low pressure region and into said collection basin and said drain hole.