KR20020031544A - Cooling fan for reduction of noise for automobile - Google Patents

Cooling fan for reduction of noise for automobile Download PDF

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Publication number
KR20020031544A
KR20020031544A KR1020000062057A KR20000062057A KR20020031544A KR 20020031544 A KR20020031544 A KR 20020031544A KR 1020000062057 A KR1020000062057 A KR 1020000062057A KR 20000062057 A KR20000062057 A KR 20000062057A KR 20020031544 A KR20020031544 A KR 20020031544A
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KR
South Korea
Prior art keywords
blade
noise
cooling fan
sound absorbing
automobile
Prior art date
Application number
KR1020000062057A
Other languages
Korean (ko)
Inventor
이현구
Original Assignee
이계안
현대자동차주식회사
류정열
기아자동차주식회사
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 이계안, 현대자동차주식회사, 류정열, 기아자동차주식회사 filed Critical 이계안
Priority to KR1020000062057A priority Critical patent/KR20020031544A/en
Publication of KR20020031544A publication Critical patent/KR20020031544A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A noise reduction cooling fan for motor vehicle is provided to reduce noise by interfering the phase of noise generated at the end of blade and attaching a sound absorbing member to the front and rear surfaces of the blade. CONSTITUTION: A blade(11) of a cooling fan is fixed in a predetermined direction to a central rotating shaft(12). The blade has a fluid flow curve(13) formed at the front surface of the blade so as to reduce noise by guiding flow of fluid and adjusting the thickness of turbulent flow boundary layer, and a sound absorbing member(14) attached to the front and rear surfaces of the blade. The blade has a teeth-shaped side surface formed in the direction same as the rotating direction of the blade, so as to reduce noise by interfering the phase of noise generated at the end of the blade.

Description

자동차용 소음 저감용 냉각팬{Cooling fan for reduction of noise for automobile}Cooling fan for automobile noise reduction {Cooling fan for reduction of noise for automobile}

본 발명은 자동차용 소음 방지용 냉각팬에 관한 것으로서, 더욱 상세하게는상기 블레이드의 전면부에 소음을 저감할 수 있는 유체 흐름 굴곡을 형성하고, 상기 블레이드의 회전 방향과 같은 측면을 톱니 형상으로 하여 상기 블레이드 끝에서 발생하는 소음의 위상을 간섭시켜 소음을 저감할 수 있게 하며, 상기 블레이드 전면부와 배면부에 흡음재를 부착한 자동차용 소음 방지용 냉각팬에 관한 것이다.The present invention relates to an automotive noise reduction cooling fan, and more particularly, to a fluid flow curve that can reduce noise on the front surface of the blade, the side of the blade in the same direction as the rotational direction of the sawtooth shape It is possible to reduce the noise by interfering the phase of the noise generated at the blade end, and relates to a noise prevention cooling fan for automobiles with sound absorbing material attached to the blade front and rear.

일반적으로 냉각팬은 송풍기를 말하는 것으로서, 금속편 또는 합성 수지로 성형한 블레이드를 라디에이터로 통풍시켜 냉각한다.Generally, a cooling fan refers to a blower, and it cools by ventilating the blade shape | molded by a metal piece or synthetic resin with a radiator.

이러한 자동차용 냉각팬의 블레이드는 도 3에 도시된 바와 같이 중앙의 회전축에 블레이드가 고정, 설치된다.The blade of the vehicle cooling fan is fixed to the blade is installed on the central rotation shaft as shown in FIG.

냉각팬의 소음은 크게 축 편심에 의한 진동 소음과 유동에 의한 유동 소음으로 나눌 수 있는데, 특히 자동차의 냉각팬과 같은 중소형 크기는 유동 소음이 지배적이다.Noise of the cooling fan can be divided into vibration noise caused by the eccentricity and flow noise caused by the flow. In particular, the small and medium size, such as the cooling fan of the automobile, dominates the flow noise.

일반적으로 유동 소음 중 톤 소음은 블레이드 통과 주파수로 존재하며 상기 블레이드가 회전하면서 발생하는 소음으로 기본 주파수인 회전 주파수와 블레이드수의 곱으로 이루어지는 것을 말한다.In general, the tone noise of the flow noise is present at the blade passing frequency and refers to the noise generated while the blade rotates, which is composed of the product of the rotation frequency and the number of blades.

그리고, 광역 소음은 블레이드를 지나는 유동의 난류에 의한 것으로 상기 블레이드의 경계층에 의한 교란, 박리, 흐름에 의한 강한 난류 교란, 블레이드 끝의 와류 구조 등에 의해 발생하는 것을 말한다.In addition, wide-area noise is caused by turbulence of the flow through the blade, and is caused by disturbance, separation, strong turbulence disturbance by flow, vortex structure at the blade tip, and the like.

또한, 냉각팬은 라디에이터, 그릴, 엔진 블럭 등과 같은 시스템과 같이 작동하고, 이러한 부품들은 팬의 소음에 영향을 준다.In addition, cooling fans work like systems such as radiators, grills, engine blocks, etc., and these components affect the noise of the fans.

이러한 부품들이 냉각팬의 전 후에 있으면 입류 유동이 불균일하게 되어 광역 소음이 커지거나, 톤 소음이 증가된다.If these components are before and after the cooling fan, the inflow flow becomes uneven, resulting in wider area noise or increased tone noise.

따라서, 종래의 자동차용 냉각팬은 냉각에 초점을 두어 설계를 함으로써, 상기 냉각팬의 자체적인 소음에 대응하지 못하는 문제점이 있었다.Therefore, the conventional automotive cooling fan is designed to focus on cooling, there is a problem that can not respond to the noise of the cooling fan itself.

따라서, 본 발명은 이러한 문제점을 감안하여 안출한 것으로서, 냉각팬의 블레이드의 전면부에 유체 흐름 굴곡을 형성하고, 회전 하는 방향과 같은 방향의 측면에 톱니 형상을 형성하며, 상기 블레이드의 전면부과 배면부에 흡음재를 부착하여 소음을 저감하는데 그 안출의 목적이 있다.Accordingly, the present invention has been made in view of the above problems, and the fluid flow curve is formed on the front surface of the blade of the cooling fan, the sawtooth shape is formed on the side of the same direction as the rotating direction, the front portion and the rear portion of the blade Its purpose is to reduce noise by attaching sound absorbing material to it.

도 1은 본 발명에 따른 자동차용 소음 방지용 냉각팬을 나타내기 위해 도시한 정면도1 is a front view showing for showing a noise prevention fan for automobiles according to the present invention.

도 2는 본 발명에 따른 자동차용 소음 방지용 냉각팬을 나타내기 위해 도시한 측면도Figure 2 is a side view showing for showing a noise prevention fan for automobiles according to the present invention

도 3은 종래의 자동차용 냉각팬을 나타내기 위해 도시한 사시도3 is a perspective view showing a conventional car cooling fan

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 냉각팬 11 : 블레이드10 cooling fan 11: blade

12 : 회전축 13 : 유체 흐름 굴곡12: axis of rotation 13: fluid flow bending

14 : 흡음재14: sound absorbing material

이하, 본 발명의 특징을 설명하면 다음과 같다.Hereinafter, the features of the present invention will be described.

중앙의 회전축(12)에 일정 방향으로 고정, 설치된 냉각팬(10)의 블레이드(11)에 있어서, 상기 블레이드의 전면부에 유체 흐름 굴곡(13)을 형성하고, 전면부와 배면부에 흡음재(14)를 부착하며, 상기 블레이드(11)의 회전 방향과 같은 측면을 톱니 형상으로 하여 소음을 저감할 수 있는 것을 특징으로 한다.In the blade 11 of the cooling fan 10 fixed and fixed to a central rotation shaft 12 in a predetermined direction, a fluid flow curve 13 is formed in the front part of the blade, and the sound absorbing material 14 is formed in the front part and the rear part. ) And the side surface, such as the rotational direction of the blade 11, is serrated to reduce noise.

이하, 첨부도면을 참조하여 본 발명의 구성과 작용에 대해 상세하게 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings in detail.

도 1은 본 발명에 따른 자동차용 소음 방지용 냉각팬을 나타내기 위해 도시한 정면도이고, 도 2는 본 발명에 따른 자동차용 소음 방지용 냉각팬을 나타내기위해 도시한 측면도를 나타낸다.Figure 1 is a front view showing for showing the noise protection fan for automobiles according to the present invention, Figure 2 shows a side view shown for showing a noise protection fan for automobiles according to the present invention.

여기서, 도면부호 10은 냉각팬을 나타낸다.Here, reference numeral 10 denotes a cooling fan.

냉각팬(10)의 블레이드(11)의 전면부에 유체의 흐름을 유도하면서 난류 경계층 두께를 조절하여 소음을 저감할 수 있는 유체 흐름 굴곡(13)을 형성한다.The fluid flow curve 13 is formed in the front surface of the blade 11 of the cooling fan 10 to reduce the noise by adjusting the turbulent boundary layer thickness while inducing the flow of the fluid.

또한, 냉각팬(10)의 블레이드(11)가 회전하는 방향과 동 방향의 블레이드(11) 측면은 그 끝에서 발생하는 소음의 위상을 간섭시켜 소음을 저감할 수 있는 형상인 톱니 형상으로 형성한다.In addition, the blade 11 side of the cooling fan 10 and the side of the blade 11 in the same direction is formed in a sawtooth shape that is a shape that can reduce the noise by interfering the phase of the noise generated at the end. .

소음을 저감하기 위해 상기 냉각팬(10)의 블레이드(11)의 전면부와 배면부에 흡음재(14)를 부착한다.In order to reduce noise, the sound absorbing material 14 is attached to the front part and the rear part of the blade 11 of the cooling fan 10.

이상에서와 같이 본 발명은 냉각팬(10)의 블레이드(11)에 유체 흐름 굴곡(13)을 형성하고, 상기 블레이드(11)의 측면을 톱니 형상으로 형성하며, 상기 블레이드(11)의 전면과 배면에 흡음재(14)를 부착하여 소음을 저감할 수 있는 효과가 있다.As described above, the present invention forms a fluid flow curve 13 in the blade 11 of the cooling fan 10, and forms the side surface of the blade 11 in a sawtooth shape, and the front surface of the blade 11 and Attaching the sound absorbing material 14 to the back has the effect of reducing the noise.

Claims (1)

중앙의 회전축(12)에 일정 방향으로 고정, 설치된 냉각팬(10)의 블레이드(11)에 있어서, 상기 블레이드의 전면부에 유체 흐름 굴곡(13)을 형성하고, 전면부와 배면부에 흡음재(14)를 부착하며, 상기 블레이드(11)의 회전 방향과 같은 측면을 톱니 형상으로 하여 소음을 저감할 수 있는 것을 특징으로 하는 자동차용 소음 저감용 냉각팬.In the blade 11 of the cooling fan 10 fixed and fixed to a central rotation shaft 12 in a predetermined direction, a fluid flow curve 13 is formed in the front part of the blade, and the sound absorbing material 14 is formed in the front part and the rear part. Cooling fan for automobile noise reduction, characterized in that the noise is reduced by the side surface, such as the rotational direction of the blade 11 to the sawtooth shape.
KR1020000062057A 2000-10-20 2000-10-20 Cooling fan for reduction of noise for automobile KR20020031544A (en)

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Application Number Priority Date Filing Date Title
KR1020000062057A KR20020031544A (en) 2000-10-20 2000-10-20 Cooling fan for reduction of noise for automobile

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Application Number Priority Date Filing Date Title
KR1020000062057A KR20020031544A (en) 2000-10-20 2000-10-20 Cooling fan for reduction of noise for automobile

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150081764A (en) 2014-01-06 2015-07-15 삼성전자주식회사 Guide blade and air conditioner having the same
KR20190086911A (en) 2018-01-15 2019-07-24 주식회사 경인기계 Fan and cooling tower comprising the same
CN110179367A (en) * 2019-06-10 2019-08-30 九阳股份有限公司 A kind of food processor of excellent noise reduction effect
KR20200064293A (en) 2018-11-29 2020-06-08 주식회사 경인기계 Fan and cooling tower comprising the same
TWI775377B (en) * 2021-04-06 2022-08-21 宏碁股份有限公司 Cooling fan

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5686398A (en) * 1979-12-17 1981-07-14 Hitachi Ltd Running type neutron flux calibrating device
JPS58172498A (en) * 1982-04-05 1983-10-11 Touhei Shokai:Kk Sound absorber in blower duct
JP2000161296A (en) * 1998-11-20 2000-06-13 Fujitsu I-Network Systems Ltd Cooling axial fan

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5686398A (en) * 1979-12-17 1981-07-14 Hitachi Ltd Running type neutron flux calibrating device
JPS58172498A (en) * 1982-04-05 1983-10-11 Touhei Shokai:Kk Sound absorber in blower duct
JP2000161296A (en) * 1998-11-20 2000-06-13 Fujitsu I-Network Systems Ltd Cooling axial fan

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150081764A (en) 2014-01-06 2015-07-15 삼성전자주식회사 Guide blade and air conditioner having the same
KR20190086911A (en) 2018-01-15 2019-07-24 주식회사 경인기계 Fan and cooling tower comprising the same
KR20200064293A (en) 2018-11-29 2020-06-08 주식회사 경인기계 Fan and cooling tower comprising the same
CN110179367A (en) * 2019-06-10 2019-08-30 九阳股份有限公司 A kind of food processor of excellent noise reduction effect
CN110179367B (en) * 2019-06-10 2022-06-14 九阳股份有限公司 Food preparation machine with good noise reduction effect
TWI775377B (en) * 2021-04-06 2022-08-21 宏碁股份有限公司 Cooling fan

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