WO2009036536A2 - Ensemble condensateur pour unité de climatisation - Google Patents

Ensemble condensateur pour unité de climatisation Download PDF

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Publication number
WO2009036536A2
WO2009036536A2 PCT/BR2007/000244 BR2007000244W WO2009036536A2 WO 2009036536 A2 WO2009036536 A2 WO 2009036536A2 BR 2007000244 W BR2007000244 W BR 2007000244W WO 2009036536 A2 WO2009036536 A2 WO 2009036536A2
Authority
WO
WIPO (PCT)
Prior art keywords
condenser
air conditioning
conditioning unit
shroud
fan
Prior art date
Application number
PCT/BR2007/000244
Other languages
English (en)
Other versions
WO2009036536A3 (fr
Inventor
Regis Silva
Carlos Afonso Tesche
Luciano Da Luz Moraes
Rafael Schabbach
Original Assignee
Carrier Corporation
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 Corporation filed Critical Carrier Corporation
Priority to CN2007801006751A priority Critical patent/CN101802518B/zh
Priority to PCT/BR2007/000244 priority patent/WO2009036536A2/fr
Priority to BRPI0722033-2A priority patent/BRPI0722033A2/pt
Publication of WO2009036536A2 publication Critical patent/WO2009036536A2/fr
Publication of WO2009036536A3 publication Critical patent/WO2009036536A3/fr

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
    • F24F13/224—Means for preventing condensation or evacuating condensate for evacuating condensate in a window-type room air conditioner
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F24F1/027—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle mounted in wall openings, e.g. in windows

Definitions

  • This disclosure relates to a condenser assembly for an air conditioning unit, and more particularly, to a condenser assembly that includes features to secure a cover to the condenser, to prevent splashing of condensate water, and to maximize fan height.
  • Air conditioning units such as room air conditioning units for example, include a compressor that circulates refrigerant from an evaporator to produce cooled air for a room.
  • the refrigerant is circulated to a condenser, which is typically rearward mounted and exposed to an outside environment.
  • the condenser receives air from a fan to reject heat from the refrigerant in the condenser to the outside environment.
  • the air conditioning unit includes a base pan, a wrapper assembly, and various cover portions that define outer dimensions for the air conditioning unit. As such, it is desirable to have the smallest overall outer dimension with the largest possible fan diameter. This is challenging from a design standpoint due to possible interference of the fan with the base pan and cover portions.
  • the base pan collects condensate water from the evaporator.
  • the fan can generate turbulence within the condensate water if the fan blades hit the water such that the water is consequently splashed out of the air conditioning unit, which is undesirable. Collected condensate water is directed along the base pan back toward the condenser.
  • the condenser includes a plurality of condenser coils that are supported by a tube sheet. In one known configuration, a condenser cover is fixed to the tube sheet with screws. This assembly process is time consuming as it is difficult to maintain alignment of holes in the tube sheet with holes in the condenser cover during fastening of the screws.
  • An air conditioning unit has a condenser assembly that includes a condenser, a condenser shroud, and a condenser cover.
  • the air conditioning unit includes an evaporator capable of producing condensate water and a base pan that collects the condensate water.
  • the condenser shroud is positioned between the evaporator and condenser.
  • the condenser shroud includes a shroud body with an opening that receives a fan. The fan can generate turbulence within the condensate water by fan blades hitting the water, which is consequently splashed out of the air conditioning unit.
  • the condenser shroud includes an extension feature that extends outwardly from the shroud body. The extension feature blocks condensate water from being splashed out of the air conditioning unit.
  • the extension feature includes a flange that extends about a portion of a periphery of the opening in the shroud body.
  • the flange acts as a barrier between the fan and the condensate water.
  • the extension feature includes a shield that collects and returns splashed water to the base pan. The shield is positioned adjacent to the flange.
  • the condenser includes a plurality of condenser coils and a tube sheet with openings that receive the condenser coils.
  • the condenser cover is secured to the tube sheet in a resilient snap-fit attachment.
  • the base pan has a main bottom surface and a lower embossment portion formed within the main bottom surface to form a lower recessed area.
  • the condenser shroud has an upper wall portion with an upper embossment portion formed within the upper wall portion to form an upper recessed area.
  • An outer circumference of the fan is positioned under the upper recessed area and over the lower recessed area such that a diameter of the fan can be maximized relative to a distance between the main bottom surface of the loose pan and the upper wall portion of the condenser shroud.
  • Figure 1 is an exploded perspective view of an air conditioning unit.
  • Figure 2A is a partial perspective view of a condenser shroud.
  • Figure 2B is a perspective view of the condenser shroud of Figure 2A and a base pan.
  • Figure 3A is partial perspective view showing an attachment interface between a condenser cover and a condenser.
  • Figure 3B is an enlarged detail as indicated in Figure 3 A.
  • Figure 4 is a transversal cross-sectional view of an assembly of a fan, base pan, condenser shroud, condenser, and condenser cover.
  • Figure 5 is a side cross-sectional view of the assembly of Figure 4 with additional components including a partition wall and motor.
  • Figure 6 is a perspective view of the condenser, condenser shroud, and condenser cover on the base pan.
  • Figure 1 illustrates an air conditioning unit 10 that has a housing including a base pan 12 and wrapper 14.
  • the base pan 12 supports a compressor
  • An expansion device (not shown) is arranged in a known manner, for example, upstream from the condenser 18.
  • the expanded refrigerant flows to an evaporator 20 before returning to the compressor 16.
  • a motor 22 blows air through the evaporator 20 using a blower 24 to provide cooled air through a front grille 26, which is exposed to an interior room for example.
  • the blower 24 is received within an opening formed in a partition 28, which is positioned between the condenser 18 and evaporator 20.
  • Refrigerant from the condenser 18 is exposed to the outside environment in one example.
  • a fan 30 is driven by the motor 22 to blow air across the condenser 18 to reject heat from the refrigerant to the outside environment.
  • a condenser orifice or condenser shroud 32 provides a seal between the condenser 18 and the fan 30.
  • the housing also includes a condenser cover 34 arranged over the condenser shroud 32 and condenser 18 to provide an enclosure about the fan 30.
  • an evaporator orifice or evaporator shroud 36 is positioned between the evaporator 20 and the partition 28.
  • a blower scroll top is positioned between the evaporator 20 and the partition 28.
  • blower scroll top 38 cooperates with the evaporator shroud 36 to provide an enclosure for the evaporator 20.
  • a controller 40 communicates with the compressor 16 and motor 22 in a known manner to provide a desired conditioned air to the room.
  • the base pan 12 collects condensate water from the evaporator 20.
  • the fan 30 can generate turbulence within the condensate water when fan blades 42 hit the water, which is consequently splashed out of the air conditioning unit 10.
  • the condenser shroud 32 includes an extension feature to block condensate water from being splashed out by the blades 42 of the fan 30.
  • the condenser shroud 32 includes a shroud body 44 with an opening 46 that receives the fan 30.
  • the extension feature includes a flange 48 that extends outwardly from the shroud body 44 toward the partition 28.
  • the flange 48 is positioned to extend about a portion of a periphery of the opening 46.
  • the flange 48 has a concave surface 50 that faces the fan 30 and a convex surface 52 that faces the base pan 12.
  • the flange 48 provides a barrier between the fan 30 and the condensate water.
  • the extension feature includes a shield portion 56 that is positioned adjacent to the flange 48.
  • the shield portion 56 also extends outwardly from the shroud body 44 toward the partition 28.
  • the shield portion 56 is positioned to be near a periphery of the opening 46.
  • the shield portion 56 has a concave surface 58 that faces the base pan 12 and a convex surface 60 that faces away from the base pan 12. Condensate water that is splashed by the blades 42 of the fan 30 is collected against the concave surface 58 and returned to the base pan 12.
  • the shield portion 56 is positioned on one side of the flange 48, i.e. is positioned at one side of the opening 46.
  • the side that the shield portion 56 is positioned at depends upon the rotational direction of the fan 30. In other words, rotational movement of the fan 30 causes potential splashing in one direction.
  • the shield portion 56 is positioned on this splashing side of the opening 46 such that the splashed water can be collected and returned to the base pan 12.
  • the flange 48 and shield portion 56 cooperate to prevent the fan 30 from splashing water out of the wrapper 14 of the air conditioning unit 10. As such, this configuration improves product power efficiency.
  • the condenser 18 includes a plurality of condenser coils 64 and has pair of tube sheets 66 with openings to receive the coils 64.
  • the tube sheets 66 are positioned at opposing ends of the condenser 18.
  • the attachment interface 62 comprises a resilient attachment feature for a snap-fit attachment.
  • a male member is resilient received within a female member to secure the components together.
  • the condenser cover 34 includes an upper wall edge 68 with snap-tangs 70 extending downwardly from the upper wall edge 68.
  • the snap-tangs 70 include a body portion 72 with a transversely extending enlarged head portion 74.
  • the tube sheets 66 include a groove or recess 76 that receives the head portion 74 to secure the condenser cover 34 to the tube sheets 66.
  • the snap-tangs 70 resiliently bend at the body portion 72 such that the head portion 74 can be inserted into, and pulled out of, the recesses 76 as needed.
  • one snap- tang 70 is secured to each tube sheet 66.
  • the base pan 12 includes a main bottom surface 80 and a lower embossment portion 82 formed within the main bottom surface 80, which forms a lower recessed area 84.
  • the shroud body 44 has an upper wall portion 86 with an upper embossment portion 88 formed within the upper wall portion 86, which forms an upper recessed area 90.
  • An outer circumference of the fan 30 is positioned under the upper recessed area 90 in alignment with the upper embossment portion 88.
  • the outer circumference of the fan 30 is also positioned over the lower recessed area 84 in alignment with the lower embossment portion 82.
  • a diameter D of the fan 30 is larger than a straight-line distance S between the upper wall portion 86 of the condenser shroud 32 and the main bottom surface 80 of the base pan 12 (see Figure 4).
  • the condenser cover 34 has an outer embossment portion 92 that corresponds generally in shape to the upper embossment portion 88 of the condenser shroud 32.
  • the outer embossment portion 92 overlaps the upper embossment portion 88 when the condenser cover
  • fan size can be maximized for a specific air conditioning unit height while avoiding contact with these components during operation.
  • a larger fan diameter can be utilized than could be used in a configuration that did not include such embossments. This maximizes condenser airflow and improves power efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une unité de climatisation comprenant un condensateur supporté par un récipient de base et une enveloppe de condensateur positionnée entre le condensateur et un évaporateur. Dans un exemple, l'enveloppe du condensateur comprend un élément d'extension qui empêche l'eau condensée collectée dans le récipient de base d'être éjectée à l'extérieur de l'unité de climatisation. Dans un exemple, le couvercle du condensateur est fixé au condensateur par emboîtement et pression. Dans un exemple, l'enveloppe du condensateur et le récipient de base comprennent des bossages permettant de maximiser le diamètre d'un ventilateur pour l'unité de climatisation.
PCT/BR2007/000244 2007-09-18 2007-09-18 Ensemble condensateur pour unité de climatisation WO2009036536A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2007801006751A CN101802518B (zh) 2007-09-18 2007-09-18 用于空调单元的冷凝器组件
PCT/BR2007/000244 WO2009036536A2 (fr) 2007-09-18 2007-09-18 Ensemble condensateur pour unité de climatisation
BRPI0722033-2A BRPI0722033A2 (pt) 2007-09-18 2007-09-18 Unidade de condicionamento de ar.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2007/000244 WO2009036536A2 (fr) 2007-09-18 2007-09-18 Ensemble condensateur pour unité de climatisation

Publications (2)

Publication Number Publication Date
WO2009036536A2 true WO2009036536A2 (fr) 2009-03-26
WO2009036536A3 WO2009036536A3 (fr) 2009-09-03

Family

ID=40468465

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2007/000244 WO2009036536A2 (fr) 2007-09-18 2007-09-18 Ensemble condensateur pour unité de climatisation

Country Status (3)

Country Link
CN (1) CN101802518B (fr)
BR (1) BRPI0722033A2 (fr)
WO (1) WO2009036536A2 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797269A (en) * 1972-09-18 1974-03-19 Lear Siegler Inc Condensate disposal system
US3811293A (en) * 1973-03-19 1974-05-21 Philco Ford Corp Air conditioner condensate disposal apparatus
US4621682A (en) * 1982-12-17 1986-11-11 Carrier Corporation Tube support assembly for a heat exchanger
US6067812A (en) * 1997-11-13 2000-05-30 Carrier Corporation Condenser fan with condensate slinger
US6085539A (en) * 1998-12-10 2000-07-11 Carrier Corporation Condensate disposal system for an air cooled air conditioning unit with a propeller fan
US6363735B1 (en) * 2000-08-17 2002-04-02 Carrier Corporation Air conditioner condenser orifice member having condensate suction port

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797269A (en) * 1972-09-18 1974-03-19 Lear Siegler Inc Condensate disposal system
US3811293A (en) * 1973-03-19 1974-05-21 Philco Ford Corp Air conditioner condensate disposal apparatus
US4621682A (en) * 1982-12-17 1986-11-11 Carrier Corporation Tube support assembly for a heat exchanger
US6067812A (en) * 1997-11-13 2000-05-30 Carrier Corporation Condenser fan with condensate slinger
US6085539A (en) * 1998-12-10 2000-07-11 Carrier Corporation Condensate disposal system for an air cooled air conditioning unit with a propeller fan
US6363735B1 (en) * 2000-08-17 2002-04-02 Carrier Corporation Air conditioner condenser orifice member having condensate suction port

Also Published As

Publication number Publication date
CN101802518A (zh) 2010-08-11
WO2009036536A3 (fr) 2009-09-03
CN101802518B (zh) 2012-06-06
BRPI0722033A2 (pt) 2014-03-25

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