EP2476913A2 - Außenraumeinheit für Klimaanlage - Google Patents

Außenraumeinheit für Klimaanlage Download PDF

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Publication number
EP2476913A2
EP2476913A2 EP12150278A EP12150278A EP2476913A2 EP 2476913 A2 EP2476913 A2 EP 2476913A2 EP 12150278 A EP12150278 A EP 12150278A EP 12150278 A EP12150278 A EP 12150278A EP 2476913 A2 EP2476913 A2 EP 2476913A2
Authority
EP
European Patent Office
Prior art keywords
orifice
outdoor unit
air conditioner
axial flow
rotation
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Withdrawn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
EP12150278A
Other languages
English (en)
French (fr)
Other versions
EP2476913A3 (de
Inventor
Seokho Choi
Yungkoo Lee
Mijin Jung
Junghoon Kim
Yongsang Yoon
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP2476913A2 publication Critical patent/EP2476913A2/de
Publication of EP2476913A3 publication Critical patent/EP2476913A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/12—Vibration or noise prevention thereof
    • 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

Definitions

  • the present disclosure relates to an outdoor unit for an air conditioner.
  • Air conditioners are home appliances for cooling or/and heating an indoor space by heat-exchanging with a refrigerant circulating a heat exchange cycle.
  • a split type air conditioner of the air conditioners includes an indoor unit and an outdoor unit. Parts constituting the heat exchange cycle such as an outdoor heat exchanger and a compressor are installed in the outdoor unit.
  • a fan for generating an airflow for heat-exchange between the outdoor heat exchanger and outdoor air is installed in the outdoor unit.
  • an axial flow fan is used as the fan.
  • An orifice for guiding air discharged from the fan is installed within the outdoor unit to increase a constant pressure of air flowing by the axial flow fan.
  • the fan and the orifice are spaced from each other to stably rotate the fan.
  • the air flowing by the axial flow fan may be leaked through a gap between the fan and the orifice.
  • the leakage of the air through the gap between the fan and the orifice may cause reduction of the performance of the fan and increase of noise when the fan is operated.
  • Embodiments provide an outdoor unit of an air conditioner configured to allow air to efficiently flow.
  • Embodiments also provide an outdoor unit of an air conditioner configured to reduce noise.
  • an outdoor unit of an air conditioner includes: an axial flow fan including a hub and a plurality of blades disposed on the hub; a rotation orifice disposed to surround the axial flow fan, the rotation orifice guiding air flowing by the axial flow fan; and a fixed orifice having an orifice hole through which the air flowing by the axial flow fan passes, the fixed orifice being disposed outside the rotation orifice, wherein at least one portion of each of the blades and one surface of the rotation orifice are coupled to each other and rotated together with each other.
  • an outdoor unit of an air conditioner including a compressor, an outdoor heat exchanger, and a fan which constitute a heat exchange cycle includes: an axial flow fan blowing air to heat-exchange the outdoor heat exchanger with outdoor air, the axial flow fan including a hub and a plurality of blades disposed on the hub; a rotation orifice rotated together with the axial flow fan, the rotation orifice guiding air flowing by the axial flow fan; a fixed orifice disposed at an upstream side in a flow direction of the air flowing by the axial flow fan when compared to that of the rotation orifice; and a plurality of auxiliary blades disposed on an outer surface of the rotation orifice, the plurality of auxiliary blades blowing air in the same direction as that of the axial flow fan, wherein the air flowing by the rotation of the axial flow fan passes through one portion of the orifice hole, and the air flowing by the auxiliary blades passes through the other portion of the orifice hole.
  • Fig. 1 is a perspective view illustrating an outdoor unit of an air conditioner according to a first embodiment.
  • Fig. 2 is a perspective view illustrating a main part of the outdoor unit of the air conditioner according to the first embodiment.
  • Fig. 3 is a sectional view illustrating the main part of the outdoor unit of the air conditioner according to the first embodiment.
  • Fig. 4 is a sectional view illustrating a flow of air in the outdoor unit of the air conditioner according to the first embodiment.
  • Fig, 5 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a second embodiment.
  • Fig, 6 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a third embodiment.
  • Fig, 7 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a fourth embodiment.
  • Fig. 1 is a perspective view illustrating an outdoor unit of an air conditioner according to a first embodiment.
  • Fig. 2 is a perspective view illustrating a main part of the outdoor unit of the air conditioner according to the first embodiment.
  • Fig. 3 is a sectional view illustrating the main part of the outdoor unit of the air conditioner according to the first embodiment.
  • a casing 10 defines an outer appearance of an outdoor unit 1.
  • An intake hole (not shown) for sucking indoor air and an exhaust hole 20 for discharging air within the casing 10 are defined in the casing 10.
  • a discharge grill 30 is disposed in the exhaust hole 20.
  • an axial flow fan 40 (see Fig. 2 ), a fan motor (not shown), an outdoor heat exchanger (not shown), a compressor (not shown), and an accumulator (not shown) are installed within the casing 10.
  • the axial flow fan 40 forms a flow of air sucked or discharged into the inside and outside of the casing 10 through the intake hole and the exhaust hole 20.
  • the fan motor provides a driving force for rotating the axial flow fan 40.
  • the outdoor heat exchanger serves as a condenser during a cooling operation and an evaporator during a heating operation.
  • a refrigerant circulating the heat exchanger cycle is heat-exchanged with the air flowing by the operation of the axial flow fan 40 while flowing into the outdoor heat exchanger.
  • the compressor compresses the refrigerant circulating the heat exchange cycle.
  • an axial flow fan including a hub 41 and a plurality of blades 43 is used as the axial flow fan 40.
  • a rotation shaft is coupled to the hub 41.
  • a plurality of blades 43 are disposed on an outer surface of the hub 41.
  • Each of the blades 43 includes a tip 44 defined as an end of the blade 43 and a leading edge 45 and trailing edge 47 respectively defined as both ends connecting the hub 41 to the tip 44.
  • a front end of the blade 43 may be called a leading edge 45, and a rear end of the blade 43 may be called a trailing edge 47 by a rotation direction of the blade 43.
  • a rotation orifice 110 is coupled to the outside of the axial flow fan 40.
  • the rotation orifice 110 may guide air flowing by rotation of the axial flow fan 40 to increase a constant pressure of the air flowing by the axial flow fan 40.
  • the rotation orifice 110 may have a ring shape surrounding the axial flow fan 40. At least one portion of the plurality of blades 43 is fixed to an inner surface of the rotation orifice 110.
  • the axial flow fan 40 and the rotation orifice 110 may be integrated with each other.
  • the rotation orifice 110 may be fixed to a position adjacent to the tip 44 of the blade 43.
  • the rotation orifice 110 fixed to the blade 43 may be parallel to or inclined at an angle less than an acute angle with respect to a flow direction of the air flowing by the axial flow fan 40.
  • a plurality of auxiliary blades 111 are disposed on an outer surface of the rotation orifice 110.
  • the plurality of auxiliary blades 111 may be disposed at the approximately same interval along the outer surface of the rotation orifice 110.
  • Each of the auxiliary blades 111 allows air to flow in the same direction as the flow direction of the air flowing by the rotation of the axial flow fan 40 when the rotation orifice 110 is rotated together with the axial flow fan 40.
  • a fixed orifice 120 is installed within the casing 10. Also, the fixed orifice 120 may guide the air flowing by the axial flow fan 40 to increase the constant pressure, like the rotation orifice 110.
  • the fixed orifice 120 is not a separate member. For example, a member for fixing the discharge grill 30 may serve as the fixed orifice 120.
  • An orifice hole 121 is defined in the fixed orifice 120.
  • the orifice hole 121 may have a circular shape having a diameter greater than the trace defined by at least the rotation orifice 110. That is, the axial flow fan 40 and the rotation orifice 110 may be disposed inside the orifice hole 121.
  • an inner circumference of the orifice hole 121 i.e., a front end of the fixed orifice 120 may be spaced from the outer surface of the rotation orifice 110 in a direction perpendicular to the flow direction of the air flowing by the axial flow fan 40.
  • the auxiliary blade 111 is disposed in a space between the rotation orifice 110 and the fixed orifice 120.
  • the auxiliary blade 111 is disposed at a relatively upstream side with respect to the orifice hole 121 in the flow direction of the air flowing by the axial flow fan 40.
  • a front end of the auxiliary blade 111 is spaced from the inner circumference of the orifice hole 121 in the direction perpendicular to the flow direction of the air flowing by the axial flow fan 40.
  • Fig. 4 is a sectional view illustrating a flow of air in the outdoor unit of the air conditioner according to the first embodiment.
  • a portion of the air flowing by the rotation of the axial flow fan 40 may flow from the upstream to the downstream (see an arrow B) in the flow direction of the air flowing by the axial flow fan 40 through the gap between the rotation orifice 110 and the fixed orifice 120. It may be understood that the flow in the arrow B direction is generated by the rotation of the auxiliary blade 111 to flow from a side of the auxiliary blade 111 toward the orifice hole 121.
  • a returning wind (see an arrow C) may occur through the orifice hole 121. Since a flow direction of the returning wind is opposite to the flow direction of the air flowing by the rotation of the axial flow fan 40, the air may be leaked.
  • Fig, 5 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a second embodiment.
  • the same components as those of the first embodiment will be derived from reference numerals of Figs. 1 to 4 , and thus their detailed descriptions will be omitted.
  • an extension part 211 (hereinafter, for convenience of description, referred to as a "first end") is disposed on one end of both ends of a rotation orifice 210 corresponding to a relatively upstream side in a flow direction of air flowing by an axial flow fan 40.
  • the extension part 211 extends outside the rotation orifice 210.
  • at least one portion of a front end of the extension part 211 overlaps a fixed orifice 220 with respect to the flow direction of the air flowing by the axial flow fan 40. That is, when a virtual straight line extends vertically (when viewed in Fig. 5 ) from the extension part 211, the straight line meets the fixed orifice 220.
  • the extension part 211 may be disposed at a relatively upstream side in the flow direction of the air flowing by the axial flow fan 40 when compared to that of the fixed orifice 220.
  • the orifice hole 221 may be shielded by the extension part 211 in the flow direction of the air flowing by the axial flow fan 40. According to the current embodiment, it may substantially prevent the air from being leaked through the orifice hole 221 corresponding to the outside of the rotation orifice 210 by the extension part 211.
  • Fig, 6 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a third embodiment.
  • the same components as those of the first embodiment will be derived from reference numerals of Figs. 1 to 4 , and thus their detailed descriptions will be omitted.
  • an extension part 311 (hereinafter, for convenience of description, referred to as a "second end”) is disposed on one end of both ends of a rotation orifice 310 corresponding to a relatively downstream side in a flow direction of air flowing by an axial flow fan 40.
  • the extension part 311 extends outside the rotation orifice 310.
  • the extension part 311 may shield at least one portion of an orifice hole 321 in the flow direction of the air flowing by the axial flow fan 40. That is, at least one portion of the extension part 311 overlaps a fixed orifice 320 with respect to the flow direction of the air flowing by the axial flow fan 40.
  • the extension part 311 may be disposed at a relatively downstream side in the flow direction of the air flowing by the axial flow fan 40 when compared to that of the fixed orifice 320.
  • Fig, 7 is a sectional view illustrating a main part of an outdoor unit of an air conditioner according to a fourth embodiment.
  • the same components as those of the first to third embodiments will be derived from reference numerals of Figs. 1 to 5 , and thus their detailed descriptions will be omitted.
  • first and second extension parts 411 and 413 are disposed on first and second ends of a rotation orifice 410.
  • first extension part 411 may be the same component as that 211 of the second embodiment.
  • second extension part 413 may be the same component as that 313 of the third embodiment.
  • the air leakage through an orifice hole 421 of a fixed orifice 420 corresponding to the relative outside of the rotation orifice 410 when compared to those of the second and third embodiments may be efficiently reduced.
  • the auxiliary blade may be disposed on the outer surface of the rotation orifice.
  • the air leakage through a gap between the first orifice fixed to the fan and the second orifice installed inside the outdoor unit may be minimized.
  • an air flow amount of the fan may be secured to substantially improve efficiency of the air conditioner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)
EP12150278.5A 2011-01-10 2012-01-05 Außenraumeinheit für Klimaanlage Withdrawn EP2476913A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110002201A KR20120080789A (ko) 2011-01-10 2011-01-10 공기조화기의 실외기

Publications (2)

Publication Number Publication Date
EP2476913A2 true EP2476913A2 (de) 2012-07-18
EP2476913A3 EP2476913A3 (de) 2017-04-05

Family

ID=45464417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12150278.5A Withdrawn EP2476913A3 (de) 2011-01-10 2012-01-05 Außenraumeinheit für Klimaanlage

Country Status (4)

Country Link
US (1) US20120175089A1 (de)
EP (1) EP2476913A3 (de)
KR (1) KR20120080789A (de)
CN (1) CN102589057A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447542A3 (de) * 2010-10-27 2018-03-07 LG Electronics Inc. Klimaanlage mit Außeneinheit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104296346B (zh) * 2013-07-19 2017-06-06 广东美的暖通设备有限公司 用于空调器的送风组件及具有其的空调器
CN106705220B (zh) * 2014-11-13 2019-07-02 广东美的制冷设备有限公司 空调器室内机、室外机及其空调器降噪装置
US10197294B2 (en) 2016-01-15 2019-02-05 Johnson Controls Technology Company Foam substructure for a heat exchanger
CN106885316B (zh) * 2017-02-07 2019-10-11 海信（广东）空调有限公司 一种导风圈及空调器室外机
CN113775560B (zh) * 2021-09-15 2023-12-19 浙江理工大学 一种火箭发动机涡轮泵的密封结构

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JPH05288196A (ja) * 1992-04-08 1993-11-02 Daikin Ind Ltd 空気調和機
JPH09318100A (ja) * 1996-05-28 1997-12-12 Hitachi Ltd ルームエアコン
IT1319637B1 (it) * 2000-01-20 2003-10-20 Gate Spa Ventilatore,particolarmente per un convogliatore d'aria associato adun radiatore di un autoveicolo.
JP2002022210A (ja) * 2000-07-11 2002-01-23 Daikin Ind Ltd 空気調和装置
JP2002276598A (ja) * 2001-03-19 2002-09-25 Denso Corp シュラウド付き軸流ファン
JP2006189039A (ja) * 2004-12-07 2006-07-20 Daikin Ind Ltd シュラウド付プロペラファン
JP2008057480A (ja) * 2006-09-01 2008-03-13 Daikin Ind Ltd シュラウド付プロペラファン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447542A3 (de) * 2010-10-27 2018-03-07 LG Electronics Inc. Klimaanlage mit Außeneinheit

Also Published As

Publication number Publication date
KR20120080789A (ko) 2012-07-18
EP2476913A3 (de) 2017-04-05
US20120175089A1 (en) 2012-07-12
CN102589057A (zh) 2012-07-18

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