Drain water discharge structure for air conditioner

• US 20060070658A1
• Filed: 10/28/2003
• Published: 04/06/2006
• Est. Priority Date: 10/29/2002
• Status: Active Grant

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Nakata, Haruo, Mizutani, Kazuhide, Takeuchi, Makio, Matsuoka, Hiromune
• Granted Patent: US 7,392,821 B2
• Time in Patent Office: Days
• US Class Current: 137/312
• CPC Class Codes: F24F 1/0047 mounted in the ceiling or at the ceiling
• CPC Class Codes: F24F 1/0063 by the mounting or arrangement of the heat exchangers
• CPC Class Codes: F24F 1/0083 with dehumidification means
• CPC Class Codes: F24F 13/222 for evacuating condensate
• CPC Class Codes: F24F 2013/227 Condensate pipe for drainage of condensate from the evaporator
• CPC Class Codes: Y10T 137/5762 With leakage or drip collecting
• CPC Class Codes: Y10T 137/85978 With pump

Abstract

Disclosed is a drain water discharge structure for an air conditioning apparatus in which at least any one of an internal drain pipe (12) and an external drain pipe (14) is formed from an antibacterial metal pipe, thereby to inhibit the generation of slime in the external drain pipe (14) and to make the external drain pipe (14) less apt to deterioration.

Claims

1. A drain water discharge structure for an air conditioning apparatus (1) configured so as to discharge drain water generated in an indoor heat exchanger (7) disposed within a casing (2) of said air conditioning apparatus (1) to outside the room through a drain discharge pipe (15) made up of an internal drain pipe (12) and an external drain pipe (14),

wherein at least any one of said internal and external drain pipes (12) and (14) is formed from an antibacterial metal pipe.

2. The drain water discharge structure of claim 1, wherein both said internal drain pipe (12) and said external drain pipe (14) are formed from antibacterial metal pipes.

3. The drain water discharge structure of claim 1 further comprising a drain pan (8) disposed so as to receive drain water under said indoor heat exchanger (7), and a drain pump (11) operable to send out drain water collected in said drain pan (8) to said drain discharge pipe (15),

wherein said drain pump (11) is formed by a force feed type pump.

4. The drain water discharge structure of claim 3, wherein said external drain pipe (14) is formed from an antibacterial metal pipe with an internal diameter of 12.7 millimeters or less.

5. The drain water discharge structure of any one of claims 1-4, wherein said antibacterial metal pipe is a copper pipe.

6. The drain water discharge structure of any one of claims 1-4, wherein said air conditioning apparatus (1) is of the high installed type.