US20060042292A1 - HVAC enviro-clean valve - SO model - Google Patents

HVAC enviro-clean valve - SO model Download PDF

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Publication number
US20060042292A1
US20060042292A1 US10926703 US92670304A US2006042292A1 US 20060042292 A1 US20060042292 A1 US 20060042292A1 US 10926703 US10926703 US 10926703 US 92670304 A US92670304 A US 92670304A US 2006042292 A1 US2006042292 A1 US 2006042292A1
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Prior art keywords
hvac
condensate
line
valve
compressed air
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US10926703
Inventor
Atwood Kimbrough
Carl Kimbrough
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Kimbrough Atwood M
Kimbrough Carl B
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22Means for preventing condensation or evacuating condensate
    • F24F13/222Means for preventing condensation or evacuating condensate for evacuating condensate

Abstract

Currently, there are no products available which allow a user to solely remove microbial and bacterial growth inside a blocked HVAC condensate drain line using compressed air without cutting into or disassembling the drain line. Our valve is an in-line condensate drain line valve that can be installed easily, quickly and economically, either during new construction or onto existing HVAC systems. The HVAC user can remove microbial and bacterial growths without cutting into or disassembling the drain line by injecting compressed air through the valve. The design of our valve allows the user to perform safe and routine maintenance to the HVAC drainage system without having to resort to expensive and repetitive service call repairs over the lifetime of the HVAC system. The valve is further designed to prevent undesirable reverse airflows into the HVAC system and home or building, caused by a dry trap in the condensate drain. The prevention of reverse airflows and reduction of microbial and bacterial growth will have a positive impact of Indoor Air Quality.

Description

    BACKGROUND OF THE INVENTION
  • The field of endeavor to which our invention pertains is Heating, Ventilation and Air Conditioning systems for the home, office, and apartment or wherever a heating and cooling air-handling unit may be installed.
  • Current technology addressing HVAC problems our invention solves is as follows:
  • 1. When a blockage occurs in a condensate drain line, a HVAC repairman must be called to disassemble the drain line and inject compressed air into the line to remove the blockage. This normally results in a costly repair bill and considerable down time to the consumer. Another method of cleaning the drain line involves using a water hose to force water into the drain line from the outlet end and many times results in spillage of water, bacteria and microbial matter into the HVAC unit and interior of the building or dwelling, all of which have a negative impact on Indoor Air Quality. An additional method used to remove microbial growths is to suction the blockage from the drain line and drain pan using a vacuum cleaner which results in large volumes of unclean air being released into the home or building interior by this cleaning process.
  • BRIEF SUMMARY OF THE INVENTION
  • One of the most common problems that a user of a Heating, Ventilation and Air Conditioning (HVAC) system faces, is that of clogged condensate drain lines and overflowing drain pans which cause untold damage annually. Typically, when this occurs, the owner or user of the HVAC system must call a repairman to cut the drain line, remove the blockage and clear the line for normal use. This usually occurs numerous times during the life of the HVAC system and results in a costly expense for the consumer for the service call and repair, inconvenience, damage to carpet and building or dwelling interior and a danger to Indoor Air Quality (IAQ).
  • The instant invention allows for easy access whereby one can easily treat the condensate drain line with inexpensive household bleach to minimize the potential for microbial and bacterial growth while favorably affecting IAQ. If the drain line does become blocked, the line can be cleared by the introduction of compressed air to clear the blockage without the necessity of cutting into the drain line. Additionally, problems associated with a “dry condensate trap” will be eliminated by the prevention of reverse airflows through the drain line. “Dry condensate trap” problems occur during times in which the HVAC unit is sparingly used and the water trap evaporates, thus leaving the drain line open and become a source of air intake for the HVAC system and have a detrimental effect on health and IAQ. Incorrect condensate drain line configuration can also cause the improper formation of a condensate trap.
  • The primary value of our product to consumers and HVAC system owners is as follows:
    • 1: Economic: Installation can be made during the initial installation of the HVAC unit or a retrofit can be made by the user or owner at anytime, inexpensively and without special tools.
    • 2: Ease of use: If a condensate drain line becomes blocked by microbial growths, compressed air can be injected through a valve orifice by the consumer to quickly and easily remove the line blockage. Disassembly of the condensate line is not necessary.
    • 3. Indoor Air Quality: By reducing microbial and bacterial growth and reducing drain pan spillages onto carpeting and interior of homes and buildings, there will be an improvement to Indoor Air Quality. Reverse airflows will be eliminated in systems operating with a “dry condensate trap” which will further enhance IAQ.
    BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
  • 1. FIG. 1: HVAC normal condensate flow pattern
  • 2. FIG. 2: Blocked Condensate line and overflow
  • 3. FIG. 3: Compressed air input through HVAC Condensate Ejection Valve
  • 4. FIG. 4: Removed line blockage and normal line function resumed
  • 5. FIG. 5: Reverse air inflows through a dry condensate line
  • 6. FIG. 6: Valve closure preventing reverse airflows entering HVAC unit
  • 7. FIG. 7: HVAC Condensate Ejection Valve—cut away—side view
  • 8. FIG. 8: Internal Check Valve—side view
  • 9. FIG. 9: Normal condensate flow pattern through valve
  • 10. FIG. 10: Compressed Air flow pattern through valve
  • 11. FIG. 11: Reverse Air Flow Pattern into valve from dry condensate line—side view
  • 12. FIG. 12: HVAC ENVIRO-CLEAN VALVE—SO Model
  • DETAILED DESCRIPTION OF THE INVENTION
  • The instant invention is composed of a Poly Vinyl Chloride (PVC) or equivalent plastic body with an inlet port connection end which allows for connection at the HVAC unit. The valve contains an internal plastic wafer check valve designed to prevent reverse air inflows into the HVAC unit which may occur through a dry condensate line. The outflow end has an outlet port for connection to the outflow portion of a condensate drain line. One inlet orifice on the top side of the valve body allows the introduction of compressed air and is covered by a slip on plastic cap when not in use (See FIGS. 7, 8, 9).
  • The HVAC Enviro-Clean Valve—SO Model is designed to be installed in a condensate drain line (See FIG. 1) and allows for easy access by the consumer to quickly and easily remove HVAC condensate drain line blockages using compressed air (See FIG. 3, 4, 10).
  • It is desirable to prevent HVAC drain pans from overflowing and causing interior damage to homes and other buildings. Odors caused from damaged carpets which can remain wet for extended period of time and be a source of microbial and bacterial growth which cause a reduction in IAQ and is unhealthy to the consumer. It is desirable to prevent reverse air inflows into the HVAC system as a result of a “dry condensate trap”. The HVAC Enviro-Clean Valve—SO Model is designed to prevent reverse airflows into the HVAC system through a dry condensate drain line. (See FIGS. 6, 11)

Claims (3)

  1. 1. A plastic flow control device attached to a HVAC unit condensate drain line for removal of blockages within the drain line by the introduction of compressed air into the drain line through the valve and is comprised of
    an inlet port of the flow control device having one end connected to a condensate outlet port of the HVAC unit;
    an outlet port of the flow control device having the other end connected to an upstream end of the condensate line;
    a flushing port or orifice of the flow control device, adapted to allow an outside compressed air source to be introduced, for the purpose of flushing any blockages or microbial growth within the condensate line; and
    a single internal check valve disposed within the flow control device for the purpose of directing compressed air flow therein and simultaneously preventing reverse compressed air and reverse fluid flow into the HVAC unit, whereby during normal operation the check valve is allowed to open freely when fluids flow from the HVAC unit.
  2. 2. The flow control device of claim 1, wherein the check valve remains open during normal operation and moves to a closed position without manual intervention upon the introduction of compressed air into the flushing port for the purpose of removing any -blockages within the condensate line.
  3. 3. The flow control device of claim 1, wherein the check valve remains open during periods of normal operation and allows the check valve to move to a closed position without manual intervention in the event of a dry condensate line, thus reducing or preventing air inflows across residual microbial growth within the condensate line and into dwelling or office airspace.
US10926703 2004-08-27 2004-08-27 HVAC enviro-clean valve - SO model Abandoned US20060042292A1 (en)

Priority Applications (1)

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US10926703 US20060042292A1 (en) 2004-08-27 2004-08-27 HVAC enviro-clean valve - SO model

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Application Number Priority Date Filing Date Title
US10926703 US20060042292A1 (en) 2004-08-27 2004-08-27 HVAC enviro-clean valve - SO model

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US20060042292A1 true true US20060042292A1 (en) 2006-03-02

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090165868A1 (en) * 2007-12-31 2009-07-02 Pearson Steven L Automated condensate drain line cleaning system, method, and kit
WO2012110800A1 (en) 2011-02-16 2012-08-23 Aspen Pumps Limited Improvements in or relating to air conditioning and other installations
US8535453B1 (en) * 2013-03-07 2013-09-17 AGCG Investments, Inc. Automated pipe clearing apparatus
US8535452B1 (en) * 2013-03-07 2013-09-17 AGCG Investments, Inc. Automated pipe clearing apparatus
CN104279632A (en) * 2014-09-28 2015-01-14 广东美的制冷设备有限公司 Suspension and floor type air conditioner and side plate thereof
US8978690B2 (en) 2012-05-18 2015-03-17 Safe-T-Flush Corp Automatic purging device for AC condensation drain lines
US8985635B2 (en) 2011-08-29 2015-03-24 Mark Hurley AC condensate drain line evacuation adapter
US9888789B2 (en) 2012-08-01 2018-02-13 Carrier Corporation Refrigerated sales cabinet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550612A (en) * 1968-07-01 1970-12-29 Leroy James Maxon Purge valve for cooling fluid conduit systems
US5964238A (en) * 1996-02-09 1999-10-12 Beth Good Junkin Condensate discharge line treatment
US6301917B1 (en) * 1998-06-11 2001-10-16 Marvin Lacoste Condensate blowout tool
US6584995B2 (en) * 2001-07-03 2003-07-01 Atwood M. Kimbrough HVAC enviro-clean valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550612A (en) * 1968-07-01 1970-12-29 Leroy James Maxon Purge valve for cooling fluid conduit systems
US5964238A (en) * 1996-02-09 1999-10-12 Beth Good Junkin Condensate discharge line treatment
US6301917B1 (en) * 1998-06-11 2001-10-16 Marvin Lacoste Condensate blowout tool
US6584995B2 (en) * 2001-07-03 2003-07-01 Atwood M. Kimbrough HVAC enviro-clean valve

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090165868A1 (en) * 2007-12-31 2009-07-02 Pearson Steven L Automated condensate drain line cleaning system, method, and kit
US7857004B2 (en) 2007-12-31 2010-12-28 Steven L. Pearson Automated condensate drain line cleaning system, method, and kit
US20110061745A1 (en) * 2007-12-31 2011-03-17 Pearson Steven L Automated Condensate Drain Line Cleaning System, Method and Kit
US9372036B2 (en) 2007-12-31 2016-06-21 Visionex Holdings, Llc Automated condensate drain line cleaning system, method, and kit
US8646474B2 (en) 2007-12-31 2014-02-11 Visionex Holdings, Llc Automated condensate drain line cleaning system, method and kit
WO2012110800A1 (en) 2011-02-16 2012-08-23 Aspen Pumps Limited Improvements in or relating to air conditioning and other installations
US8985635B2 (en) 2011-08-29 2015-03-24 Mark Hurley AC condensate drain line evacuation adapter
US8978690B2 (en) 2012-05-18 2015-03-17 Safe-T-Flush Corp Automatic purging device for AC condensation drain lines
US9888789B2 (en) 2012-08-01 2018-02-13 Carrier Corporation Refrigerated sales cabinet
US8535453B1 (en) * 2013-03-07 2013-09-17 AGCG Investments, Inc. Automated pipe clearing apparatus
US8535452B1 (en) * 2013-03-07 2013-09-17 AGCG Investments, Inc. Automated pipe clearing apparatus
CN104279632A (en) * 2014-09-28 2015-01-14 广东美的制冷设备有限公司 Suspension and floor type air conditioner and side plate thereof

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