EP0884542A4 - Outdoor unit of air conditioner - Google Patents

Outdoor unit of air conditioner

Info

Publication number
EP0884542A4
EP0884542A4 EP97911481A EP97911481A EP0884542A4 EP 0884542 A4 EP0884542 A4 EP 0884542A4 EP 97911481 A EP97911481 A EP 97911481A EP 97911481 A EP97911481 A EP 97911481A EP 0884542 A4 EP0884542 A4 EP 0884542A4
Authority
EP
European Patent Office
Prior art keywords
saw
toothed portion
negative pressure
grille
pressure surface
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.)
Granted
Application number
EP97911481A
Other languages
German (de)
French (fr)
Other versions
EP0884542A1 (en
EP0884542B1 (en
Inventor
Zhiming Zheng
Seiji Sato
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP0884542A1 publication Critical patent/EP0884542A1/en
Publication of EP0884542A4 publication Critical patent/EP0884542A4/en
Application granted granted Critical
Publication of EP0884542B1 publication Critical patent/EP0884542B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • 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
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F24F1/58—Separate protective covers for outdoor units, e.g. solar guards, snow shields or camouflage
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/24—Means for preventing or suppressing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

A saw-toothed portion (5) is provided on a front edge (3a) of a grille vane (2a) which constitutes a blow grille of an outdoor unit. The tips of crests (5a) of the saw-toothed portion (5) are rounded. The height (H) of the crests of the saw-toothed portion (5) is 0.05 to 0.25 times the length (chord length) of the airfoil grille vane, and the crest pitch (S) of the saw-toothed portion (5) is 0.5 to 1.5 times the height of the crest. Thus a multiplicity of vertical vortices generate from valleys (5b) of the saw-toothed portion (5) to draw the air flow, which has a great flow velocity at locations away from a negative pressure surface of the grille vane (2a), toward the negative pressure surface, and to make it hard for the flow on the negative pressure surface side to separate, thereby reducing the noise.
EP97911481A 1996-12-16 1997-11-07 Outdoor unit of air conditioner Expired - Lifetime EP0884542B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP335448/96 1996-12-16
JP33544896 1996-12-16
JP8335448A JP3052862B2 (en) 1996-12-16 1996-12-16 Outdoor unit for air conditioner
PCT/JP1997/004059 WO1998027390A1 (en) 1996-12-16 1997-11-07 Outdoor unit of air conditioner

Publications (3)

Publication Number Publication Date
EP0884542A1 EP0884542A1 (en) 1998-12-16
EP0884542A4 true EP0884542A4 (en) 2000-03-29
EP0884542B1 EP0884542B1 (en) 2003-05-07

Family

ID=18288680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97911481A Expired - Lifetime EP0884542B1 (en) 1996-12-16 1997-11-07 Outdoor unit of air conditioner

Country Status (12)

Country Link
EP (1) EP0884542B1 (en)
JP (1) JP3052862B2 (en)
KR (1) KR100453318B1 (en)
CN (1) CN1106545C (en)
AU (1) AU719177B2 (en)
DE (1) DE69721739T2 (en)
ES (1) ES2198557T3 (en)
HK (1) HK1016247A1 (en)
ID (1) ID21219A (en)
PT (1) PT884542E (en)
SA (1) SA97180747B1 (en)
WO (1) WO1998027390A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533313C2 (en) * 2008-12-22 2010-08-24 Atlas Copco Rock Drills Ab Cooling system intended for cooling at least one circulating fluid, and a machine comprising the cooling system
ES2788099T3 (en) * 2011-04-08 2020-10-20 Trox Gmbh Geb Device for influencing an air flow in a component of an air conditioning installation
DE102012213930A1 (en) * 2012-08-07 2014-02-13 BSH Bosch und Siemens Hausgeräte GmbH Blower with air inlet nozzle for swirling air flow and air inlet nozzle for a blower
KR101435007B1 (en) * 2013-04-22 2014-08-28 반석공조시스템(주) Noise reduction Louver
CN103292441B (en) * 2013-06-25 2016-03-30 吉林大学 Bionical noise reduction air conditioner grid
KR101702169B1 (en) 2013-10-02 2017-02-02 엘지전자 주식회사 Indoor unit for cassette type air conditoiner
KR101706812B1 (en) * 2013-10-02 2017-02-14 엘지전자 주식회사 Indoor unit for cassette type air conditoiner
KR20150043573A (en) 2013-10-11 2015-04-23 엘지전자 주식회사 Indoor unit for cassette type air conditoiner
KR101662377B1 (en) 2014-01-27 2016-10-04 엘지전자 주식회사 Indoor unit of air conditoiner
CN105588231B (en) * 2015-03-31 2019-07-23 青岛海信日立空调***有限公司 A kind of air-conditioner outdoor unit air exhausting structure
KR101906844B1 (en) * 2015-07-24 2018-10-11 코닌클리케 필립스 엔.브이. Hair care device
CN107388424A (en) * 2017-08-04 2017-11-24 广东美的制冷设备有限公司 Outlet housing and air-conditioner outdoor unit
JP2019098878A (en) * 2017-11-30 2019-06-24 トヨタ自動車株式会社 register
JP2021080851A (en) * 2019-11-15 2021-05-27 株式会社マキタ Blower

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976115A (en) * 1989-08-21 1990-12-11 Carrier Corporation Cambered condenser grill
JPH0593531A (en) * 1991-10-01 1993-04-16 Matsushita Electric Ind Co Ltd Front grille for outdoor apparatus of air conditioner
EP0711925A1 (en) * 1994-11-08 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Propeller fan

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267839U (en) * 1988-11-07 1990-05-23
JP2516634Y2 (en) * 1990-03-19 1996-11-06 松下冷機株式会社 Blowout guider
JP3337248B2 (en) * 1992-12-03 2002-10-21 三菱重工業株式会社 Propeller fan
JPH08313006A (en) * 1995-05-17 1996-11-29 Matsushita Electric Ind Co Ltd Front grille for outdoor machine of air conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976115A (en) * 1989-08-21 1990-12-11 Carrier Corporation Cambered condenser grill
JPH0593531A (en) * 1991-10-01 1993-04-16 Matsushita Electric Ind Co Ltd Front grille for outdoor apparatus of air conditioner
EP0711925A1 (en) * 1994-11-08 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Propeller fan

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 430 (M - 1460) 10 August 1993 (1993-08-10) *
See also references of WO9827390A1 *

Also Published As

Publication number Publication date
KR19990081955A (en) 1999-11-15
EP0884542A1 (en) 1998-12-16
PT884542E (en) 2003-09-30
ID21219A (en) 1999-05-06
ES2198557T3 (en) 2004-02-01
EP0884542B1 (en) 2003-05-07
WO1998027390A1 (en) 1998-06-25
SA97180747B1 (en) 2006-08-12
KR100453318B1 (en) 2004-12-31
AU4885597A (en) 1998-07-15
DE69721739T2 (en) 2004-02-05
CN1106545C (en) 2003-04-23
HK1016247A1 (en) 1999-10-29
JP3052862B2 (en) 2000-06-19
CN1211311A (en) 1999-03-17
DE69721739D1 (en) 2003-06-12
JPH10176847A (en) 1998-06-30
AU719177B2 (en) 2000-05-04

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