KR20010001065A - Turbofan - Google Patents

Turbofan Download PDF

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Publication number
KR20010001065A
KR20010001065A KR1019990020044A KR19990020044A KR20010001065A KR 20010001065 A KR20010001065 A KR 20010001065A KR 1019990020044 A KR1019990020044 A KR 1019990020044A KR 19990020044 A KR19990020044 A KR 19990020044A KR 20010001065 A KR20010001065 A KR 20010001065A
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KR
South Korea
Prior art keywords
turbofan
shroud
hub
blades
blade
Prior art date
Application number
KR1019990020044A
Other languages
Korean (ko)
Inventor
김정훈
박병일
김대식
Original Assignee
구자홍
엘지전자 주식회사
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Filing date
Publication date
Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019990020044A priority Critical patent/KR20010001065A/en
Priority to PCT/KR2000/000574 priority patent/WO2000073661A1/en
Priority to AU52527/00A priority patent/AU5252700A/en
Publication of KR20010001065A publication Critical patent/KR20010001065A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/28Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/50Building or constructing in particular ways
    • F05D2230/53Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction

Abstract

PURPOSE: A turbofan is provided to reduce the number of the assembling processes and metal mold by manufacturing the turbo fan in one metal mold, thereby curtailing the cost of production. CONSTITUTION: A turbofan includes a hub part(11) combined with a rotary shaft of a driving motor for rotating, a plurality of blades(12) integratively formed in the edge of the front part of the hub part and rotating with inhaled air by a centrifugal force for sending the air in axial direction, and a shroud(13) integratively formed in the front edge of the blades for preventing the vibration of the blades and forming a passage of the air to be sent, wherein the full diameter of the hub part is less than or equal to the minimum bore of the shroud.

Description

터보팬{TURBOFAN}Turbo Fan {TURBOFAN}

본 발명은 터보팬에 관한 것으로, 특히 허브와 블레이드와 슈라우드를 갖는 터보팬을 하나의 금형으로 성형하여 생산성을 향상시키는데 적합한 터보팬에 관한 것이다.The present invention relates to a turbofan, and more particularly, to a turbofan suitable for improving productivity by forming a turbofan having a hub, a blade, and a shroud into one mold.

일반적으로 터보팬(turbofan)은 날개차의 회전에 의하여 발생되는 기체의 원심력을 이용하여 기체를 압송하는 원심팬의 일종으로, 이러한 터보팬은 많은 풍량을 발생시킬 수 있어 대용량 공기조화기 등에 주로 사용되고 있다.In general, a turbofan is a type of centrifugal fan that pressurizes gas by using centrifugal force of a gas generated by the rotation of a van. Such a turbofan is mainly used for a large-capacity air conditioner because it generates a large amount of air. have.

도 1은 종래 터보팬의 일례를 보인 사시도로서, 이에 도시된 바와 같이 종래의 터보팬은 수개의 블레이드가 원주방향으로 구비되고 그 중심이 구동모터(미도시)에 결합되어 회전하면서 유체를 흡입하여 토출시키는 팬몸체(1)와, 그 팬몸체(1)의 각 블레이드 선단에 결합되어 블레이드의 진동을 방지하고 유체의 유동을 유도하는 슈라우드(shroud)(2)으로 구성되어 있다.1 is a perspective view showing an example of a conventional turbo fan, as shown in the conventional turbo fan is provided with several blades in the circumferential direction and the center thereof is coupled to the drive motor (not shown) to suck the fluid while rotating It consists of a fan body 1 for discharging, and a shroud 2 coupled to the tip of each blade of the fan body 1 to prevent vibration of the blades and induce fluid flow.

상기 팬몸체(1)는 구동모터(미도시)의 회전축에 결합되는 허브몸체부(1a)와, 그 허브몸체부(1a)의 외주면에 연장되어 상기한 블레이드가 성형되는 허브살부(1b)와, 그 허브살부(1b)의 전방면(편의상, 유체의 토출방향을 전방측으로 명명함) 가장자리에 다수개의 블레이드가 원주방향으로 형성되는 블레이드부(1c)로 이루어져 있다.The fan body 1 includes a hub body portion 1a coupled to a rotating shaft of a drive motor (not shown), a hub portion portion 1b extending to an outer circumferential surface of the hub body portion 1a, and forming the blades. And a blade portion 1c in which a plurality of blades are formed in the circumferential direction at the edge of the front face of the hub rib portion 1b (for convenience, the discharge direction of the fluid is referred to as the front side).

상기 허브살부(1b)의 외주면에 각 블레이드의 바깥면이 일치하도록 형성되므로, 상기 허브살부(1b)의 직경과 블레이드부(1c)의 최대외경은 동일한 크기로 성형되어 있다.Since the outer surface of each blade coincides with the outer circumferential surface of the hub meat 1b, the diameter of the hub meat 1b and the maximum outer diameter of the blade 1c are molded to the same size.

상기와 같이 구성된 종래 터보팬을 제조하는 과정은 다음과 같다.The process of manufacturing the conventional turbofan configured as described above is as follows.

즉, 상기 팬몸체(1)와 슈라우드(2)를 각각 별개로 제작하여 서로 조립하게 되는데, 먼저 팬몸체용 금형(미도시)에 소정형상의 캐비티(미도시)를 형성하고, 그 캐비티에 피브이시(PVC)와 같은 융제를 주입하여 허브몸체부(1a) 및 허브살부(1b) 그리고 블레이드부(1c)가 일체로 성형되는 팬몸체(1)를 제작한다.That is, the fan body 1 and the shroud 2 are separately manufactured and assembled together. First, a cavity of a predetermined shape (not shown) is formed in a mold for the fan body (not shown), and the cavity is placed in the cavity. A flux such as (PVC) is injected to produce a fan body 1 in which the hub body portion 1a, the hub meat portion 1b, and the blade portion 1c are integrally molded.

다음, 슈라우드용 금형(미도시)에 소정형상의 캐비티(미도시)를 형성하고, 그 캐비티에 역시 피브이시와 같은 융제를 주입하여 환상의 슈라우드(2)를 제작한다.Next, a cavity (not shown) of a predetermined shape is formed in a mold for shroud (not shown), and an annular shroud 2 is produced by injecting a flux such as FBish into the cavity.

이렇게 제작된 팬몸체(1)의 전방면 가장자리에 원주방향으로 성형된 블레이드부(1c)의 바깥쪽 선단면에 상기의 슈라우드(2)를 열융착 등으로 부착시켜 터보팬을 완성하는 것이었다.The shroud 2 was attached to the outer end surface of the blade portion 1c formed in the circumferential direction on the front edge of the fan body 1 thus manufactured by heat fusion or the like to complete the turbo fan.

그러나, 상기와 같이 팬몸체(1)와 슈라우드(2)를 개별 제작하여 후조립으로 제조하는 종래의 터보팬은, 전술한 바와 같이 팬몸체(1)와 슈라우드(2)를 서로 다른 금형에서 미리 개별 제작한 다음에 열융착과 같은 후가공을 통해 조립하여야 하므로 조립공수가 많고, 상기 팬몸체(1)와 슈라우드(2)를 서로 다른 금형에서 성형하여야 하므로 필요한 금형 및 금형작업시간도 증가하게 되는 단점이 있었다.However, in the conventional turbofan which separately manufactures the fan body 1 and the shroud 2 as a post-assembly as described above, the fan body 1 and the shroud 2 are previously formed in different molds as described above. Since the individual manufacturing and then assembly through post-processing, such as heat welding, the number of assembling work is required, and the fan body (1) and the shroud (2) must be molded in different molds, so the required mold and mold work time is also increased. there was.

본 발명은 상기와 같은 종래 터보팬이 가지는 문제점을 감안하여 안출한 것으로, 상기 팬몸체와 슈라우드를 일괄 성형할 수 있도록 하여 조립공수를 감축함과 아울러 금형 및 금형작업 시간을 줄여 생산성을 향상시킬 수 있는 터보팬을 제공하려는데 본 발명의 목적이 있다.The present invention has been made in view of the problems of the conventional turbofan as described above, by reducing the number of assembly work by reducing the number of assembly work by molding the fan body and the shroud can improve the productivity. It is an object of the present invention to provide a turbofan.

도 1a 및 도 1b는 종래 터보팬을 분해하여 보인 사시도 및 종단면도.1A and 1B are a perspective view and a longitudinal cross-sectional view showing an exploded conventional turbofan.

도 2는 종래 터보팬의 결합된 상태를 보인 종단면도.Figure 2 is a longitudinal sectional view showing a combined state of a conventional turbofan.

도 3은 종래 터보팬의 결합된 상태를 후방에서 보인 정면도.Figure 3 is a front view showing a coupled state of the conventional turbofan from the rear.

도 4는 본 발명 터보팬을 보인 사시도.Figure 4 is a perspective view of the turbofan of the present invention.

도 5는 본 발명 터보팬을 보인 종단면도.Figure 5 is a longitudinal cross-sectional view showing a turbofan of the present invention.

도 6은 본 발명 터보팬을 후방에서 보인 정면도.Figure 6 is a front view of the present invention the turbofan from the rear.

도 7은 본 발명 터보팬의 제작방법을 설명하기 위해 보인 개략도.7 is a schematic view illustrating a method of manufacturing a turbofan of the present invention.

** 도면의 주요부분에 대한 부호의 설명 **** Explanation of symbols for main parts of drawings **

11 : 허브부 11a : 허브몸체11: hub portion 11a: hub body

11b : 허브살 12 : 블레이드부11b herb flesh 12 blade portion

13 : 슈라우드부 M1 : 하형13: shroud portion M1: lower type

M2 : 상형M2: Pictograph

본 발명의 목적을 달성하기 위하여, 구동모터의 회전축에 결합되어 회전하는 허브와, 그 허브의 전방면 가장자리에 일체로 형성되어 회전하면서 원심력에 의해 기체를 흡입하여 축방향으로 압송하는 다수개의 블레이드와, 그 블레이드의 선단면에 일체로 형성되어 블레이드 진동을 방지함과 아울러 압송되는 기체의 유로를 형성하는 슈라우드를 갖는 터보팬에 있어서 ; 상기 허브의 외경이 슈라우드의 최소내경 보다 작거나 같도록 형성되는 것을 특징으로 하는 터보팬이 제공된다.In order to achieve the object of the present invention, the hub is coupled to the rotating shaft of the drive motor, and a plurality of blades which are integrally formed on the front edge of the hub to rotate and suck the gas by the centrifugal force and axially pumped; In the turbofan having a shroud formed integrally with the front end surface of the blade to prevent blade vibration and to form a flow path of the gas being conveyed; A turbofan is provided, wherein the outer diameter of the hub is smaller than or equal to the minimum inner diameter of the shroud.

이하, 본 발명에 의한 터보팬을 첨부도면에 도시된 일실시예에 의거하여 상세하게 설명한다.Hereinafter, the turbofan according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

도 4는 본 발명 터보팬을 보인 사시도이고, 도 5는 본 발명 터보팬을 보인 종단면도이며, 도 6은 본 발명 터보팬을 후방에서 보인 정면도이다.Figure 4 is a perspective view of the turbofan of the present invention, Figure 5 is a longitudinal sectional view of the turbofan of the present invention, Figure 6 is a front view of the turbofan of the present invention seen from the rear.

이에 도시된 바와 같이, 본 발명의 터보팬은 구동모터(미도시)의 회전축에 결합되어 회전하는 허브부(11)와, 그 허브부(11)의 전방면에 일체로 성형되어 기체를 흡입 압송하는 블레이드부(12)와, 그 블레이드부(12)의 선단면에 일체로 성형되어 블레이드부(12)의 진동을 방지하고 기체를 유도하는 슈라우드부(13)로 구성된다.As shown therein, the turbofan of the present invention is integrally formed on the hub portion 11 and the front surface of the hub portion 11, which is coupled to the rotating shaft of the driving motor (not shown), and sucks and pumps gas. It consists of a blade portion 12 and a shroud portion 13 formed integrally with the front end surface of the blade portion 12 to prevent vibration of the blade portion 12 and to guide gas.

상기 허브부(11)는 구동모터(미도시)의 회전축이 결합되는 허브몸체(11a) 및 그 허브몸체(11a)의 외주면에 연장되어 상기한 블레이드부(12)가 성형되는 허브살(11b)로 이루어지는데, 이 허브살(11b)의 외경이 상기 슈라우드의 최소내경 보다 작거나 같은 크기로 형성되도록 성형된다. 즉, 상기 슈라우드와 허브살의 외경차(L)가 슈라우드의 내외경차(H) 보다 크거나 동일하다.The hub portion 11 is a hub body 11a to which the rotating shaft of the drive motor (not shown) is coupled, and a hub meat 11b extending to the outer circumferential surface of the hub body 11a to form the blade portion 12. It consists of, the outer diameter of the hub meat (11b) is molded so as to have a size smaller than or equal to the minimum inner diameter of the shroud. That is, the outer diameter difference L between the shroud and the herb meat is greater than or equal to the inner and outer difference H of the shroud.

상기 블레이드부(12)는 허브부(11)의 회전시 함께 회전하면서 원심력 또는 구심력을 발생시켜 기체를 비스듬히 흡입하여 반경방향 또는 축방향으로 압송하도록 상기한 허브살(11b)의 전방면 가장자리에 반경방향으로 만곡져 일체로 성형된다.The blade portion 12 is a radius on the front edge of the hub meat (11b) so as to rotate centrifugal force or centripetal force while rotating together with the rotation of the hub portion 11 to suck the gas at an angle to be fed in the radial or axial direction. Curving in the direction to form a single piece.

상기 슈라우드부(13)는 블레이드부(12)의 바깥쪽 선단면에 일체로 성형되는 것으로, 전방쪽으로 갈 수록 직경이 작아지도록 축방향으로 만곡지게 형성된다.The shroud portion 13 is formed integrally with the outer end surface of the blade portion 12, is formed to be curved in the axial direction so that the diameter becomes smaller toward the front side.

상기와 같은 본 발명의 터보팬을 제조하는 과정은 다음과 같다.The process of manufacturing the turbofan of the present invention as described above is as follows.

즉, 본 발명은 하나의 금형으로 허브와 블레이드와 슈라우드를 갖는 터보팬을 성형하는 것으로, 소정형상의 캐비티(미부호)를 갖는 하형(M1)에 피브이시와 같은 융제를 주입하고 나서 역시 소정형상의 캐비티를 갖는 상형(M2)을 덮고, 이후 일정시간을 경과시켜 상기의 융제를 경화시킨 다음에 상형(M2)을 열어 터보팬을 빼냄으로써 완료된다.That is, the present invention is to form a turbofan having a hub, a blade and a shroud in one mold, and after the injection of a flux such as fibish into the lower mold M1 having a cavity (unsigned) of a predetermined shape, The upper mold | type M2 which has a cavity is covered, after that, the said flux is hardened by passing a predetermined time, and the upper mold | type M2 is opened, and it completes by removing a turbofan.

이때, 상기 허브부(11)와 슈라우드부(13)가 상호 대향되는 면을 가지고 있어 제품을 빼내는 과정에서 이 대향면끼리 걸릴 수 있으나, 상기 슈라우드부(13)가 축방향에 대해 점유하는 면적 만큼을 허브살(11b)에서 제거하여 허브부(11)와 슈라우드부(13)가 상기의 방향에 대해 교차되지 않도록 함으로써, 제품을 금형으로부터 용이하게 빼낼 수 있게 되는 것이다.At this time, the hub portion 11 and the shroud portion 13 has a surface facing each other, and the opposite surfaces may be caught in the process of removing the product, but as much as the area occupied by the shroud portion 13 in the axial direction. It is possible to easily remove the product from the mold by removing from the hub meat (11b) so that the hub portion 11 and the shroud portion 13 does not cross in the direction.

이렇게 하면, 상기 허브와 블레이드를 일체로 성형하고 나서 슈라우드를 따로 성형하여 블레이드에 부착시키는 후가공 작업이 생략되고 한번에 허브와 블레이드와 슈라우드를 갖는 터보팬을 제작할 수 있게 됨에 따라 조립공수가 줄어 들게 되는 것은 물론, 이로 인해 작업공수 및 금형수량이 감축되어 생산비용이 절감된다.This eliminates the post-processing work of forming the hub and blades integrally and then forming the shrouds separately and attaching them to the blades. As a result, the labor and mold quantity are reduced, thereby reducing the production cost.

본 발명에 의한 터보팬은 허브의 전방면에 다수개의 블레이드가 구비되고, 그 블레이드의 선단면에 슈라우드가 구비되어 이루어지되, 상기 허브의 외경이 슈라우드의 최소내경 보다 작거나 같도록 형성함으로써, 하나의 금형으로 허브와 블레이드와 슈라우드를 갖는 터보팬을 제작할 수 있게 됨에 따라 조립공수가 줄어 들게 되는 것은 물론, 이로 인해 작업공수 및 금형수량이 감축되어 생산비용이 절감되는 효과가 있다.Turbo fan according to the present invention is provided with a plurality of blades on the front surface of the hub, the shroud is provided on the front end surface of the blade, by forming such that the outer diameter of the hub is less than or equal to the minimum inner diameter of the hub, one As the mold of the turbo fan having the hub, blades and shroud can be manufactured, as well as the assembly labor is reduced, this reduces the labor cost and the number of molds, thereby reducing the production cost.

Claims (1)

구동모터의 회전축에 결합되어 회전하는 허브부와, 그 허브부의 전방면 가장자리에 일체로 형성되어 회전하면서 원심력에 의해 기체를 흡입하여 축방향으로 압송하는 다수개의 블레이드와, 그 블레이드의 선단면에 일체로 형성되어 블레이드 진동을 방지함과 아울러 압송되는 기체의 유로를 형성하는 슈라우드를 갖는 터보팬에 있어서 ;A hub portion coupled to the rotating shaft of the drive motor and rotating, a plurality of blades integrally formed at the front edge of the hub portion and rotating to suck gas into the axial direction by centrifugal force, and to the front end surface of the blade In the turbofan having a shroud to form a flow path of the gas to be conveyed to prevent the blade vibration formed; 상기 허브부의 외경이 슈라우드의 최소내경 보다 작거나 같도록 형성되는 것을 특징으로 하는 터보팬.Turbo hub characterized in that the outer diameter of the hub portion is formed to be less than or equal to the minimum inner diameter of the shroud.
KR1019990020044A 1999-06-01 1999-06-01 Turbofan KR20010001065A (en)

Priority Applications (3)

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KR1019990020044A KR20010001065A (en) 1999-06-01 1999-06-01 Turbofan
PCT/KR2000/000574 WO2000073661A1 (en) 1999-06-01 2000-06-01 Turbo fan
AU52527/00A AU5252700A (en) 1999-06-01 2000-06-01 Turbo fan

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KR1019990020044A KR20010001065A (en) 1999-06-01 1999-06-01 Turbofan

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042546A1 (en) * 2001-11-13 2003-05-22 Lg Innotek Co., Ltd Bidirectional indraft type centrifugal fan and cooling apparatus for computer
KR100460587B1 (en) * 2002-04-19 2004-12-09 삼성전자주식회사 Turbofan and mold for manufacturing the same
KR100725813B1 (en) * 2006-04-04 2007-06-08 삼성전자주식회사 Centrifugal fan

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100414117C (en) * 2003-08-25 2008-08-27 乐金电子(天津)电器有限公司 Turbofan for air conditioner
AU2006308435B2 (en) * 2005-10-28 2013-02-14 Resmed Motor Technologies Inc. Single or multiple stage blower and nested volute(s) and/or impeller(s) therefor
CN103321954B (en) * 2012-03-21 2016-09-14 奇鋐科技股份有限公司 Blade structure and manufacture method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261997A (en) * 1984-06-08 1985-12-25 Hitachi Ltd Integratedly molded fan configuration
US4647271A (en) * 1984-06-08 1987-03-03 Hitachi, Ltd. Impeller of centrifugal blower

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2661986B2 (en) * 1988-09-30 1997-10-08 松下冷機株式会社 Centrifugal blower impeller
JPH0318698A (en) * 1989-06-16 1991-01-28 Sato Kogyosho:Kk Centrifugal fan
JP2985656B2 (en) * 1994-04-26 1999-12-06 株式会社デンソー Centrifugal multi-blade fan and its manufacturing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261997A (en) * 1984-06-08 1985-12-25 Hitachi Ltd Integratedly molded fan configuration
KR860000485A (en) * 1984-06-08 1986-01-29 미다 가쓰시게 Wing wheel of centrifugal blower
US4647271A (en) * 1984-06-08 1987-03-03 Hitachi, Ltd. Impeller of centrifugal blower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042546A1 (en) * 2001-11-13 2003-05-22 Lg Innotek Co., Ltd Bidirectional indraft type centrifugal fan and cooling apparatus for computer
KR100460587B1 (en) * 2002-04-19 2004-12-09 삼성전자주식회사 Turbofan and mold for manufacturing the same
KR100725813B1 (en) * 2006-04-04 2007-06-08 삼성전자주식회사 Centrifugal fan

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WO2000073661A1 (en) 2000-12-07

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