EP2122266A1 - Système d'élimination de condensat - Google Patents

Système d'élimination de condensat

Info

Publication number
EP2122266A1
EP2122266A1 EP07700474A EP07700474A EP2122266A1 EP 2122266 A1 EP2122266 A1 EP 2122266A1 EP 07700474 A EP07700474 A EP 07700474A EP 07700474 A EP07700474 A EP 07700474A EP 2122266 A1 EP2122266 A1 EP 2122266A1
Authority
EP
European Patent Office
Prior art keywords
knock
condensate
protrusions
collecting surface
out cover
Prior art date
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.)
Withdrawn
Application number
EP07700474A
Other languages
German (de)
English (en)
Inventor
Fabio Beretta
Maurizio Rabito
Laura Marcucci
Felice Pirovano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of EP2122266A1 publication Critical patent/EP2122266A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/36—Drip trays for outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/54—Inlet and outlet arranged on opposite sides

Definitions

  • the invention relates generally to the field of refrigeration systems, and more specifically, to condensate disposal arrangements used in refrigeration systems.
  • An air conditioner is a type of refrigeration system, which typically facilitates heating, ventilation and air-cooling.
  • split-type air conditioners a separate outdoor condensing unit and an indoor evaporating unit are provided.
  • the air conditioner When the air conditioner is operated in the heating mode, the operation of the air conditioner is reversed. Therefore, when the atmospheric temperature drops, water vapor in the air condenses on the condenser coil situated inside the condensing unit. This water gradually drips on the base pan of the condensing unit. In places where the atmospheric temperature is below the freezing point of water, the condensate freezes to form ice. Excessive ice formation may block the operation of .
  • Another method involves the provision of a drain pipe that is connected to the conventional drain hole.
  • This drain pipe facilitates the process of draining out of the condensate continuously.
  • ice is formed in the base pan, which may result in blockage of the drain pipe.
  • knock-out drain holes to drain out the condensate.
  • knock-out drain holes are not sealed.
  • water from the condenser coil continuously drips out from the condensing unit through the knock-out drain holes.
  • rubber or silicon caps are used to seal the knock-out drain holes. This provision of caps, however, entails a high manufacturing cost.
  • Embodiments of the invention provide a condensate-removal system in a condensing unit.
  • the condensing unit includes a condenser coil, a propeller fan and a base pan.
  • the condensate removal system includes a condensate-collecting surface, a knock-out drain hole, and a knock-out cover configured to fit in the knock-out drain hole.
  • the knock-out cover has protrusions extending from its perimeter. These protrusions help in removably attaching the knock-out cover to a knock-out drain hole.
  • an air-conditioning system that includes an evaporator unit, a condensing unit and a base pan with sealed knock-out drain holes.
  • the condensing unit includes a condenser coil, a propeller fan and a base pan.
  • the condensate removal system includes a condensate-collecting surface, a knock-out drain hole, and a knock-out cover that is configured to fit in the knock-out drain hole.
  • the knock-out cover has a plurality of protrusions extending from its perimeter. The protrusions help in removably attaching the knock-out cover to the knockout drain hole.
  • Embodiments of the invention provide a method for manufacturing a base pan for a condensing unit of an air conditioning system.
  • a knock-out cover with a plurality of protrusions extending from its perimeter, is cut out from a condensate-collecting surface of the base pan.
  • the knock-out drain hole that is formed after the knock-out cover is removed is then sealed by covering the knock-out hole with the knock-out cover again.
  • the protrusions provided on the perimeter of the knock-out cover ensure that the cover is sealed.
  • FIG. 1 illustrates an environment in which the invention may be practiced, in accordance with an embodiment of the invention
  • Fig. 2 illustrates various components of a condensing unit, in accordance with an embodiment of the invention
  • Fig. 3 illustrates various components of a base pan of a condensing unit, in accordance with an embodiment of the invention
  • Fig. 4 illustrates formation of sealed knock-out drain holes in a condensing unit, in accordance with an embodiment of the invention
  • Fig. 5 illustrates the dimensions of a knock-out cover of a base pan of a condensing unit, in accordance with an embodiment of the invention.
  • Fig. 6 is a flowchart illustrating a method for manufacturing the base pan of a condensing unit, in accordance with an embodiment of the invention.
  • Fig. 1 illustrates an environment in which the invention may be practiced, in accordance with an embodiment of the invention.
  • the environment includes an air- conditioning system.
  • Air conditioning system 100 is a split-type air conditioner that includes an evaporator 102, a condensing unit 104, including condenser coils, preferably placed outdoors, and a linkage 106.
  • Linkage 106 connects evaporator 102 to condensing unit 104.
  • Linkage 106 may include a conduit that houses a power cable, refrigerant tubing and suction tubing.
  • Fig. 2 illustrates various components of a condensing unit 104, in accordance with an embodiment of the invention.
  • Condensing unit 104 includes a base pan 202.
  • Base pan 202 is supported on two supporting elements 204.
  • Base pan 202 supports the elements of condensing unit 104.
  • a front panel 210, a back panel (not shown), and two side panels 206 are mounted on base pan 202.
  • Condensing unit 104 also includes a propeller fan 212, which blows air on the condenser coils (not shown).
  • Fig. 3 illustrates various elements of a base pan 202 of a condensing unit 104, in accordance with an embodiment of the invention.
  • Base pan 202 includes a condensate- collecting surface 302.
  • Condensate-collecting surface 302 is extended to form an upward rim 308, in order to attach front panel 210, back panel and side panels 206 to base pan 202.
  • Condensate-collecting surface 302 is supported by supporting elements 204.
  • supporting elements 204 are removably or permanently fastened to base pan 202.
  • supporting elements 204 may be integrated in base pan 202, to form a self- supporting structure.
  • a knock-out drain hole 304 is formed by cutting out a piece from condensate- collecting surface 302.
  • Condensate-collecting surface 302 may include more than one knock-out drain holes 304.
  • a drain hole 306 is provided on condensate-collecting surface 302.
  • a drain pipe can be connected to drain hole 306 for the removal of condensate collected in base pan 202.
  • multiple drain pipes can be connected to multiple drain holes 306.
  • the condensate, formed on the condenser coil drips on base pan 202.
  • This condensate is collected on condensate-collecting surface 302.
  • the condensate freezes in base pan 202, resulting in ice formation.
  • the ice can be removed by dismantling the condensing unit assembly and removing base pan 202 thereby.
  • knock-out drain holes 304 are provided on base pan 202, for removing the ice.
  • base pan 202 is made of sheet metal. It will be apparent to a person skilled in the art that the material of base pan 202 may be any metal, alloy, composite, plastic or polymer. In addition, the thickness of the material may vary, depending on manufacturing requirements.
  • Fig. 4 illustrates the formation of sealed knock-out drain holes 304 in a condensing unit, in accordance with an embodiment of the invention.
  • Fig. 4A shows an upside-down view of base pan 202.
  • a knock-out cover 402 is cut out from condensate- collecting surface 302 to form knock-out drain hole 304.
  • knock-out drain holes 304 are formed by means of blanking operation.
  • the knock-out drain holes are formed by using a Computer Numeric Control (CNC) machine or by a laser-cutting operation.
  • CNC Computer Numeric Control
  • a force of order 11-15 ton is applied by means of a blanking die to cut out knock-out cover 402. It will be apparent to a person skilled in the art that the force and the cutting-out operation may vary depending on the material of condensate-collecting surface 302.
  • Knock-out cover 402 is cut in such a way that it has one or more protrusions ' extending from its perimeter. The protrusions provide support for the knock-out cover 402 to fit into knock-out drain hole 304.
  • knock-out cover 402 is fitted in knock-out drain hole 304 by means of a nitrogen cyli ⁇ der-piston arrangement, as shown in Fig. 4B.
  • the arrows in Fig.4B indicate the direction of the pressure to be applied by means of the nitrogen piston-cylinder arrangement. It will be apparent that any other force-exerting means that generates force of the order 11-15 ton can be used to fit knock-out cover 402 into knock-out drain hole 304.
  • the protrusions provided on knock-out cover 402 facilitate the sealing of knock-out cover 402 to knock-out drain hole 304.
  • a force from the opposite direction can be applied to remove knock-out cover 402 from knock-out drain hole 304. The force can be applied manually with hand or using a hammer.
  • knock-out drain holes are provided on condensate-collecting surface 302, and a corresponding number of knockout covers are provided to seal the knock-out drain holes.
  • Knock-out drain hole 406 has a knock-out cover 404 sealed to it.
  • Fig. 5 illustrates the dimensions of a knock-out cover 402 of a base pan 202 of a condensing unit 104, in accordance with an embodiment of the invention.
  • Knock-out cover 402 is a hexagonal-shaped piece cut from condensate-collecting surface 302, with four protrusions 502, spaced along the perimeter, on four of its sides.
  • protrusion 502 is formed by using a blanking die.
  • Protrusion 502 is an arc of a circle having diameter between 2 mm and 5 mm.
  • the length of protrusion 502 may be between 0.2 mm and 1 mm.
  • the angle of protrusion 502 may be between 40 and 60 degrees.
  • the diameter of circle of protrusion 502 is 3 mm, its length ' 0.5 mm, and its angle 45 degrees.
  • the protrusions may be identical or non-identical. It will be apparent that the protrusions can be of any other dimensions apart from those given above.
  • the shape of knock-out cover 402 may be, but not limited to, a regular polygon, a star polygon, an uneven polygon, a crescent, a circle, an ellipse, and an oval. Generally, the greater number of protrusions along the perimeter of the knock-out cover provides a greater sealing surface and in some instances a stronger seal.
  • Fig. 6 is a flowchart illustrating a method for manufacturing a base pan 202 of a condensing unit 104, in accordance with an embodiment of the invention.
  • Base pan 202 is provided with knock-out drain holes 304 in order to drain out the condensate or remove the ice formed on condensate-collecting surface 302.
  • the process of manufacturing base pan 202 is initiated.
  • a piece is cut out from condensate-collecting surface 302.
  • the piece is cut by means of a blanking operation.
  • the piece is cut from condensate- collecting surface 302 of base pan 202 in such a way that it forms knock-out cover 402.
  • knock-out cover 402 has protrusions 502 extending from its perimeter.
  • knock-out cover 402 is attached to knock-out drain hole 304, such that knock-out drain hole 304 gets sealed.
  • Protrusions 502 enable the sealing of knock-out cover 402 to knock-out drain hole 304.
  • knock-out cover 402 is attached to knock-out drain hole 304 by means of a nitrogen cylinder-piston arrangement. It will be apparent that any other pressure-exerting means that generates pressure of the order 11-15 ton can be used to fit knock-out cover 402 into knock-out drain hole 3O4.Thereafter, the process is terminated at step 608.
  • the embodiments of the invention provide one or more of the following advantages.
  • the system is simple in design, cost-effective, easy to implement, and entails minimal maintenance cost. Further, it provides knock-out drain holes that are sealed. Moreover, it works even when there is ice formation in the base pan at extremely low temperatures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

L'invention concerne un système et un procédé destinés à l'élimination d'un condensat du plateau de base d'une unité de condensation. Le système d'élimination de condensat inclut une surface de recueil du condensat, un trou de drainage d'éjection et un couvercle d'éjection qui est configuré pour s'adapter dans le trou de drainage d'éjection. Le couvercle d'éjection, comportant des protubérances s'étendant depuis son périmètre, est découpé depuis la surface de recueil de condensat du plateau de base. Le trou de drainage d'éjection ainsi formé est ensuite rendu étanche en fixant sur lui le couvercle d'éjection.
EP07700474A 2007-01-10 2007-01-10 Système d'élimination de condensat Withdrawn EP2122266A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/000070 WO2008084277A1 (fr) 2007-01-10 2007-01-10 Système d'élimination de condensat

Publications (1)

Publication Number Publication Date
EP2122266A1 true EP2122266A1 (fr) 2009-11-25

Family

ID=38474163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07700474A Withdrawn EP2122266A1 (fr) 2007-01-10 2007-01-10 Système d'élimination de condensat

Country Status (3)

Country Link
EP (1) EP2122266A1 (fr)
CN (1) CN101631995A (fr)
WO (1) WO2008084277A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387606A (zh) * 2015-12-28 2016-03-09 珠海格力电器股份有限公司 换热器接水结构及空调
US9958182B1 (en) 2016-10-27 2018-05-01 Alan C. Rimmer Humidifier auxiliary drain pan
US11692735B2 (en) 2021-10-08 2023-07-04 Alan C. Rimmer Humidifier auxiliary drain pan

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010054063A (ja) * 2008-08-26 2010-03-11 Mitsubishi Electric Corp 空気調和機の室外ユニット
FR2991438B1 (fr) * 2012-05-30 2016-12-09 Cie Ind D'applications Thermiques Bac a condensats et appareil de traitement d'air muni d'un tel bac
CN104235368A (zh) * 2013-06-16 2014-12-24 东风贝洱热系统有限公司 一种汽车空调壳体的冷凝水密封结构
CN107676951B (zh) * 2017-09-13 2022-11-08 奥克斯空调股份有限公司 空调器排水结构
US10830490B2 (en) 2018-08-01 2020-11-10 Johnson Controls Technology Company Liquid drainage systems and methods
US10871306B2 (en) 2019-01-02 2020-12-22 Johnson Controls Technology Company Modular drain pans for HVAC systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039170A (ja) * 1998-07-27 2000-02-08 Fujitsu General Ltd 天井埋込型空気調和機
JP2007085690A (ja) * 2005-09-26 2007-04-05 Matsushita Electric Ind Co Ltd 空気調和機
JP2009019794A (ja) * 2007-07-11 2009-01-29 Daikin Ind Ltd ドレンパン及びこのドレンパンを備えた空調機用室内機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09210409A (ja) * 1996-01-30 1997-08-12 Mitsubishi Heavy Ind Ltd 空気調和機の室外ユニット
JP3606099B2 (ja) * 1999-03-26 2005-01-05 松下電器産業株式会社 空気調和機
JP3523823B2 (ja) * 2000-02-29 2004-04-26 東芝キヤリア株式会社 空気調和機の室外ユニット
KR20030038155A (ko) * 2001-11-08 2003-05-16 주식회사 엘지이아이 일체형 공기조화기의 드레인 홀 개폐장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039170A (ja) * 1998-07-27 2000-02-08 Fujitsu General Ltd 天井埋込型空気調和機
JP2007085690A (ja) * 2005-09-26 2007-04-05 Matsushita Electric Ind Co Ltd 空気調和機
JP2009019794A (ja) * 2007-07-11 2009-01-29 Daikin Ind Ltd ドレンパン及びこのドレンパンを備えた空調機用室内機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008084277A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387606A (zh) * 2015-12-28 2016-03-09 珠海格力电器股份有限公司 换热器接水结构及空调
US9958182B1 (en) 2016-10-27 2018-05-01 Alan C. Rimmer Humidifier auxiliary drain pan
US11692735B2 (en) 2021-10-08 2023-07-04 Alan C. Rimmer Humidifier auxiliary drain pan

Also Published As

Publication number Publication date
WO2008084277A1 (fr) 2008-07-17
CN101631995A (zh) 2010-01-20

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