EP0367079A1 - Capotage d'un ventilateur pour un radiateur - Google Patents

Capotage d'un ventilateur pour un radiateur Download PDF

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Publication number
EP0367079A1
EP0367079A1 EP89119779A EP89119779A EP0367079A1 EP 0367079 A1 EP0367079 A1 EP 0367079A1 EP 89119779 A EP89119779 A EP 89119779A EP 89119779 A EP89119779 A EP 89119779A EP 0367079 A1 EP0367079 A1 EP 0367079A1
Authority
EP
European Patent Office
Prior art keywords
fan
radiator
fin plates
shroud
fin
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
EP89119779A
Other languages
German (de)
English (en)
Other versions
EP0367079B1 (fr
Inventor
Hiroshi Inoue
Noriyuki Kurio
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.)
Mazda Motor Corp
Usui Kokusai Sangyo Kaisha Ltd
Original Assignee
Mazda Motor Corp
Usui Kokusai Sangyo Kaisha 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 Mazda Motor Corp, Usui Kokusai Sangyo Kaisha Ltd filed Critical Mazda Motor Corp
Publication of EP0367079A1 publication Critical patent/EP0367079A1/fr
Application granted granted Critical
Publication of EP0367079B1 publication Critical patent/EP0367079B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow

Definitions

  • the invention relates to a fan shroud for guiding air flow passing through a radiator.
  • This type of fan shroud is gener­ally mounted on an automotive radiator, surrounding an axial fan of a liquid cooled internal combustion engine in order to provide a safe guard against a manual touch to the fan.
  • the main purpose of the fan shroud is to surround the axial fan thereby to prevent peripheral air from entering into a cooled area. It also serves to increase a volume of air flow passing through the radiator thereby to promote cooling efficiency of the radiator.
  • Several examples of the fan shroud are disclosed in the U. S. Patent No. 4,541,369 to Ruhl, issued Sep. 17, 1985, Japanese unexamined Utility Model Publication No. 52-146646 issued Nov. 7, 1977, and Japanese unexamined Utility Model Publication No. 59-103822 issued Jul. 12, 1984.
  • a fan shroud for guiding air flow through a radi­ator, wherein said shroud includes a mouth portion which extends coaxially with the central axis of the fan in a par­allel or tapered form and terminates at a position passing over at least a portion of the outer circumference of the fan, and a plurality of fin plates are circumferentially disposed at regular intervals on the inside surface of said mouth portion, said fin plates projecting radially inwardly into the space between the fan and a core of the radiator.
  • each of the fin plates is formed in a triangular, frusto-triangular or trape­zoidal shape in such manner that the vertical length of the shape decreases along the direction from the core of the radiator to the fan.
  • each of the fin plates is arranged in an imaginary plane containing the central axis of the fan.
  • a radi­ator 10 comprises a core 12, a fan shroud 14, an upper tank located above the core and a lower tank located below the core. These tanks are not shown for illustrative simplifi­cation.
  • a fan 30 comprises a plurality of fan blades 32 and a fan hub 34 for supporting the blades.
  • the fan hub 34 is usually mounted on a fan drive shaft which is driven by an internal combustion engine.
  • the fan shroud 14 comprises a rectangular base frame and a mouth portion 16, which extends from the base frame coaxially with the central axis of the fan 30 and terminates at a position passing over a portion of the outer circumference of the fan 30.
  • the overlapped length is represented by "U".
  • the mouth portion 16 is formed in a parallel tubular form. However, it is also possible to make the mouth portion 16 in a tapered form which is rather common to a fan shroud. While the fan 30 is driven by the engine and rotated toward the direction R, cooling air is compulsorily admitted through the radiator core 12.
  • each of the fin plates 18 is formed in a triangular shape in such a manner that its vertical length decreases along the direction from the core 12 to the fan 30. Further, as shown in Fig. 2, each of the fin plates 18 is arranged in an imaginary plane which con­tains the central axis of the fan 30.
  • These triangular fin plates 18 have advantages that axial overall length of the radiator 10 can be minimized. The fin plates 18 can be made without difficulty.
  • the fin plates can be made by a metallic plate and then welded to the shroud.
  • the fin plates can be formed integral with the shroud through an injection moulding process.
  • the outside diameter D of the fan 30 is 440mm
  • the width W of the fan 30 is 82mm
  • number of fan blades 32 is nine
  • the inside diameter A of the mouth por­tion 16 is 500mm
  • the axial length T of the mouth portion 16 is 120mm
  • the overlapped length U is 48mm
  • the base length of the triangular fin plate 18 is 80mm
  • the vertical length of the fin plate 18 is 80mm.
  • FIGs. 4 to 10 show test results achieved in accordance with the Japanese Industrial Standard B 8330 "Testing method for Turbo-Fans and Blowers". In these tests, fan speed N was constantly kept to 2200 rpm.
  • the first curve 1 represents a case of null fin.
  • Other curves 2 to 4 represent respective cases while an angular orientation of the fin plate 18 is changed from zero oblique angle, that is parallel to the central axis of the fan, to 30 degrees oblique angle toward the same direction as the twist of the fan blade (see Fig. 3), and to 15 degrees oblique angle con­trary to the direction of the twist of the fan blade.
  • the experimental values are plotted in relation to the volume of air flow Q and static pressure P.
  • the curve S represents a peculiar permeability of the radiator 10, that is a basic resistance to air flow passing through the radiator. In the test, permeability coefficient k was 0.037.
  • Fig. 5 five curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 5 represent re­spective cases while a vertical length of the triangular fin plate 18 is changed by cutting off the top portion thereof in horizontal stepwise. From these curves following tendency is recognized: As the cut-off area increases, an advantage of the fin plate is diminished.
  • Fig. 6 six curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 6 represent re­spective cases while the number of frusto-triangular or trapezoidal fin plate is changed from four to sixteen.
  • the curve 4 in case of eight fin plates is proved to be most advantageous.
  • Fig. 7 four curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 4 represent re­spective cases while a distance L between the radiator core and the fin plate is changed in stepwise by cutting off the side portion of the fin plate. It is recognized that air flow and static pressure are not affected by the change of the distance L.
  • Fig. 8 four curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 4 represent re­spective cases while a midway folding angle of the fin plate is changed from zero, to 30 degrees in clockwise direction, and to 30 degrees in counterclockwise direction. In both cases in which the fin plate is folded in midway, an advan­tage of the fin plate is diminished.
  • Fig. 9 five curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 4 represent re­spective cases while a distance between the rectangular fin plate and the fan blade is changed by cutting off the side portion of the fin plate. It is recognized that an advantage of the fin plate is diminished as the area of the cut-off increases.
  • Fig. 10 six curves are shown.
  • the first curve 1 repre­sents a case of null fin.
  • Other curves 2 to 6 represent re­spective cases while a horizontal distance between the trape­zoidal fin plate and the fan blade is changed. It is recog­nized that an advantage of the fin plate is diminished as the distance increases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP89119779A 1988-10-31 1989-10-24 Capotage d'un ventilateur pour un radiateur Expired - Lifetime EP0367079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63273086A JP2767045B2 (ja) 1988-10-31 1988-10-31 ラジエータ用シュラウド
JP273086/88 1988-10-31

Publications (2)

Publication Number Publication Date
EP0367079A1 true EP0367079A1 (fr) 1990-05-09
EP0367079B1 EP0367079B1 (fr) 1993-10-20

Family

ID=17522949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119779A Expired - Lifetime EP0367079B1 (fr) 1988-10-31 1989-10-24 Capotage d'un ventilateur pour un radiateur

Country Status (4)

Country Link
EP (1) EP0367079B1 (fr)
JP (1) JP2767045B2 (fr)
KR (1) KR970009838B1 (fr)
DE (1) DE68910079T2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233859A1 (de) * 2002-07-18 2004-01-29 Hella-Behr Fahrzeugsysteme Gmbh Montageträger für Frontmodul
US9074515B2 (en) 2009-12-15 2015-07-07 Mitsubishi Heavy Industries, Ltd. Vehicle heat-exchange module
US20190145427A1 (en) * 2016-05-11 2019-05-16 Denso Corporation Fan shroud
FR3075324A1 (fr) * 2017-12-20 2019-06-21 Valeo Systemes Thermiques Masque acoustique et support pour dispositif de ventilation correspondant
EP3657112A4 (fr) * 2017-12-27 2020-11-18 Gree Electric Appliances, Inc. of Zhuhai Ensemble d'échange de chaleur et dispositif d'échange de chaleur
CN112444144A (zh) * 2019-08-30 2021-03-05 Ovh公司 热交换器组件

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826768B2 (ja) * 1990-07-27 1996-03-21 株式会社小松製作所 低騒音エンジン冷却装置
JPH0814249B2 (ja) * 1990-07-27 1996-02-14 株式会社小松製作所 ラジエータファンの騒音防止装置
JPH10115222A (ja) * 1996-10-11 1998-05-06 Hitachi Constr Mach Co Ltd エンジン冷却装置
KR100365402B1 (ko) * 2000-12-21 2002-12-18 만도공조 주식회사 콘덴서의 방열장치
JP5011657B2 (ja) * 2005-05-19 2012-08-29 パナソニック株式会社 軸流型羽根車
KR101318139B1 (ko) 2013-04-25 2013-10-15 (주)센도리 기밀성이 향상된 댐퍼 일체형 브로아 장치
CN107234432B (zh) * 2017-07-03 2023-06-13 湖北秀山智能科技股份有限公司 一种散热器芯体装配机及其装配方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161481B (de) * 1960-03-19 1964-01-16 Voith Gmbh J M Einrichtung zur Stabilisierung der Charakteristik von Kreiselradarbeitsmaschinen mit axialdurchstroemtem Laufrad
DE2345506A1 (de) * 1972-10-04 1974-04-11 Ford Werke Ag Luftleiteinrichtung fuer ventilatoren, insbesondere fuer kraftfahrzeugmotoren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212039U (fr) * 1975-07-12 1977-01-27
JPS57153727U (fr) * 1981-03-25 1982-09-27
JPS57159000U (fr) * 1981-03-31 1982-10-06
JPS59186421U (ja) * 1983-05-30 1984-12-11 東洋ラジエ−タ−株式会社 熱交換器用フアンのシユラウド

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161481B (de) * 1960-03-19 1964-01-16 Voith Gmbh J M Einrichtung zur Stabilisierung der Charakteristik von Kreiselradarbeitsmaschinen mit axialdurchstroemtem Laufrad
DE2345506A1 (de) * 1972-10-04 1974-04-11 Ford Werke Ag Luftleiteinrichtung fuer ventilatoren, insbesondere fuer kraftfahrzeugmotoren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 47 (M-280)(1484) 02 March 1984, & JP-A-58 200097 (MITSUBISHI) 21 November 1983, *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233859A1 (de) * 2002-07-18 2004-01-29 Hella-Behr Fahrzeugsysteme Gmbh Montageträger für Frontmodul
US9074515B2 (en) 2009-12-15 2015-07-07 Mitsubishi Heavy Industries, Ltd. Vehicle heat-exchange module
US20190145427A1 (en) * 2016-05-11 2019-05-16 Denso Corporation Fan shroud
US11009042B2 (en) * 2016-05-11 2021-05-18 Denso Corporation Fan shroud
FR3075324A1 (fr) * 2017-12-20 2019-06-21 Valeo Systemes Thermiques Masque acoustique et support pour dispositif de ventilation correspondant
WO2019122764A1 (fr) * 2017-12-20 2019-06-27 Valeo Systemes Thermiques Masque acoustique et support le comprenant pour dispositif de ventilation
EP3657112A4 (fr) * 2017-12-27 2020-11-18 Gree Electric Appliances, Inc. of Zhuhai Ensemble d'échange de chaleur et dispositif d'échange de chaleur
US11280348B2 (en) 2017-12-27 2022-03-22 Gree Electric Appliances, Inc. Of Zhuhai Heat exchange assembly and heat exchange device
CN112444144A (zh) * 2019-08-30 2021-03-05 Ovh公司 热交换器组件

Also Published As

Publication number Publication date
JP2767045B2 (ja) 1998-06-18
DE68910079T2 (de) 1994-05-05
EP0367079B1 (fr) 1993-10-20
JPH02123221A (ja) 1990-05-10
DE68910079D1 (de) 1993-11-25
KR900006691A (ko) 1990-05-08
KR970009838B1 (ko) 1997-06-18

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