KR970016170A - Axial flow fan - Google Patents

Axial flow fan Download PDF

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Publication number
KR970016170A
KR970016170A KR1019950028579A KR19950028579A KR970016170A KR 970016170 A KR970016170 A KR 970016170A KR 1019950028579 A KR1019950028579 A KR 1019950028579A KR 19950028579 A KR19950028579 A KR 19950028579A KR 970016170 A KR970016170 A KR 970016170A
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KR
South Korea
Prior art keywords
fan
hub
axial flow
flow fan
tip
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Application number
KR1019950028579A
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Korean (ko)
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KR0139690B1 (en
Inventor
최무용
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구자홍
Lg 전자 주식회사
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Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950028579A priority Critical patent/KR0139690B1/en
Priority to GB9600102A priority patent/GB2302141B/en
Priority to CN 96100882 priority patent/CN1089142C/en
Publication of KR970016170A publication Critical patent/KR970016170A/en
Application granted granted Critical
Publication of KR0139690B1 publication Critical patent/KR0139690B1/en

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Abstract

본 발명은 전자레인지 등에 적용되는 축류팬에 관한 것으로, 원통의 허브에 5개의 블레이드를 일정 간격을 두고 형성하고, 그 블레이드의 내외경비(팬허브경÷팬외경)를 0.28~0.35로 설정하여, 보다 낮은 회전수에서 냉각 성능을 만족시키면서 소음을 저감시키도록 한 것으로, 소음 실험에 의하면 현재 양산중인 M모델에 적용한 기존 축류팬(3020rpm)의 평균 소음값은 46.06dB(A)인 반면에, 본 발명의 축류팬(2400rpm)의 평균 소음값은 41.88dB(A)이고, 또한 현재 개발중인 A모델에 적용한 기존 축류팬(2350rpm)의 평균 소음값은 43.24dB(A)이고, 본 발명의 축류팬(2145rpm)의 평균 소음값은 39.47dB(A)로서 약 3.8dB(A)정도의 소음 저감 효과를 얻을 수 있다.The present invention relates to an axial flow fan applied to a microwave oven and the like, five blades are formed in a cylindrical hub at regular intervals, and the inner and outer ratios (fan hub diameter ÷ fan outer diameter) of the blade is set to 0.28 ~ 0.35, In order to reduce the noise while satisfying the cooling performance at a lower rotational speed, the noise test shows that the average noise value of the existing axial fan (3020 rpm) applied to the M model in mass production is 46.06 dB (A). The average noise value of the axial fan (2400 rpm) of the invention is 41.88 dB (A), and the average noise value of the existing axial fan (2350 rpm) applied to the A model currently being developed is 43.24 dB (A), and the axial fan of the present invention. The average noise value of (2145 rpm) is 39.47 dB (A), and a noise reduction effect of about 3.8 dB (A) can be obtained.

Description

축류팬Axial flow fan

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명에 의한 전자레인지용 축류팬의 일실시례를 보인 정면도,5 is a front view showing one embodiment of the axial fan for a microwave oven according to the present invention;

제6도는 제5도의 부분 상세도,6 is a partial detailed view of FIG.

제7도 및 제8도는 본 발명에 의한 축류팬의 요부 구성을 보인 것으로, 제7도는 최대 캠버를 설명하기 위한 X-Z평면도,7 and 8 show the main part of the axial fan according to the present invention, Figure 7 is an X-Z plan view for explaining the maximum camber,

제8도는 피치 각도를 설명하기 위한 X-Z평면도,8 is an X-Z plan view for explaining a pitch angle,

제15도는 본 발명에 의한 축류팬의 팬 바운더리(boundary)데이타에 의한 블레이드의 일실시례를 보인 부분 정면도.Figure 15 is a partial front view showing an embodiment of a blade by the fan boundary data of the axial fan according to the present invention.

Claims (7)

원통형의 허브에 5개의 블레이드를 일정 간격을 두고 형성하고, 그 블레이드의 내외경비(팬허브경÷팬외경)를 0.28~0.35로 설정하여서 구성한 것을 특징으로 하는 축류팬.An axial flow fan comprising five blades formed at regular intervals in a cylindrical hub and having an inner and outer ratio (fan hub diameter ÷ fan outer diameter) of the blade set to 0.28 to 0.35. 제1항에 있어서, 상기 팬외경은 108±1㎜로 하고, 팬허브경은 35.6±1㎜인 것을 특징으로 하는 축류팬.The axial flow fan according to claim 1, wherein the fan outer diameter is 108 ± 1 mm and the fan hub diameter is 35.6 ± 1 mm. 제1항에 있어서, 스윕 각도()는 (0~25°)±1°로 분포하도록 형성된 것을 특징으로 하는 축류팬.The method of claim 1, wherein the sweep angle ) Is an axial flow fan, characterized in that it is formed so as to distribute (0 ~ 25 °) ± 1 °. 제1항에 있어서, 피치 각도()는 43.99~30.99±1°로 선형적인 분포를 이루도록 형성된 것을 특징으로 하는 축류팬.The method of claim 1 wherein the pitch angle ( ) Is an axial flow fan, characterized in that to form a linear distribution in 43.99 ~ 30.99 ± 1 °. 제1항에 있어서, 최대 캠버 위치는 0.45~0.5로서 허브에서 팁까지 균일하게 분포하고, 최대 캠버 비율(최대캠버÷코드 길이×100)은 허브에서 팁까지(5.01~11.01%)±0.05%를 선형적인 분포를 이루도록 형성된 것을 특징으로 하는 축류팬.The maximum camber position is 0.45 to 0.5, which is uniformly distributed from the hub to the tip, and the maximum camber ratio (maximum camber ÷ cord length x 100) is ± 0.05% from the hub to the tip (5.01 to 11.01%). Axial flow fan, characterized in that formed in a linear distribution. 제1항에 있어서, 상기 블레이드의 두께는 허브에서의 최대 두께를 Th라 할 때 팁에서는 Tt=0.75Th의 두께로 선형적인 분포를 이루며, 리딩에지에서 트레일링 에지 사이의 두께 분포는 이중타원곡선식을 이용하여 분포되도록 형성된 것을 특징으로 하는 축류팬.The method of claim 1, wherein the thickness of the blade has a linear distribution with a thickness of Tt = 0.75Th at the tip when the maximum thickness at the hub is Th, and the thickness distribution between the trailing edges at the leading edge is a double elliptic curve. Axial flow fan, characterized in that formed to be distributed using. 제1항에 있어서, 상기 블레이드 사이의 간격은 허브를 0으로 하고, 팁을 1로 정의할 때, 허브에서의 간격은 6.2±0.5㎜, 0~75구간은 2차 포물선으로 6.2±0.5㎜에서 10.4±0.5㎜까지 증가시키고, 0.75~0.95구간은 2차 포물선으로 10.4±0.5㎜에서 8.0±0.5㎜까지 감소시키다가 블레이드의 팁 부분인 0.95~1.0구간에서 3차 포물선으로 8.0㎜±0.5㎜에서 21.6±0.5㎜까지 간격을 급격히 증가시키며, 각 구간의 경계점(0.75,0.95)에서의 미분도함수가 0일때 2차 및 3차 포물선 식을 사용하여 분포시키도록 형성된 것을 특징으로 하는 축류팬.2. The method of claim 1 wherein the spacing between the blades is at hub 0 and the tip is defined at 1, where the spacing at the hub is 6.2 ± 0.5 mm, and 0-75 sections at 6.2 ± 0.5 mm as secondary parabolas. Increase to 10.4 ± 0.5mm, 0.75 ~ 0.95 section from 20.4 parabolic to 10.4 ± 0.5mm to 8.0 ± 0.5mm, then from blade tip of 0.95 ~ 1.0 to 3rd parabola at 8.0mm ± 0.5mm An axial flow fan, characterized in that it rapidly increases the interval to 21.6 ± 0.5 mm and is distributed using the second and third parabolic equations when the derivative function at the boundary point (0.75,0.95) of each section is zero. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950028579A 1995-06-13 1995-09-01 Axial flow fan for microwave KR0139690B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950028579A KR0139690B1 (en) 1995-09-01 1995-09-01 Axial flow fan for microwave
GB9600102A GB2302141B (en) 1995-06-13 1996-01-04 Axial flow fan for microwave oven
CN 96100882 CN1089142C (en) 1995-06-13 1996-01-19 Axial flow fan for microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950028579A KR0139690B1 (en) 1995-09-01 1995-09-01 Axial flow fan for microwave

Publications (2)

Publication Number Publication Date
KR970016170A true KR970016170A (en) 1997-04-28
KR0139690B1 KR0139690B1 (en) 1998-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487338B1 (en) * 2002-11-18 2005-05-03 엘지전자 주식회사 axial flow fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487338B1 (en) * 2002-11-18 2005-05-03 엘지전자 주식회사 axial flow fan

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