KR940007747Y1 - Fan - Google Patents
Fan Download PDFInfo
- Publication number
- KR940007747Y1 KR940007747Y1 KR2019910023990U KR910023990U KR940007747Y1 KR 940007747 Y1 KR940007747 Y1 KR 940007747Y1 KR 2019910023990 U KR2019910023990 U KR 2019910023990U KR 910023990 U KR910023990 U KR 910023990U KR 940007747 Y1 KR940007747 Y1 KR 940007747Y1
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- South Korea
- Prior art keywords
- housing
- blade
- cross
- thickness
- sectional
- Prior art date
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Classifications
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- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
내용 없음.No content.
Description
제 1 도는 종래 축류팬의 단면도.1 is a cross-sectional view of a conventional axial flow fan.
제 2 도는 일반적인 축류팬의 날개 정면도.2 is a front view of the wing of a general axial fan.
제 3 도는 제 2 도의 A-A선을 따라 절단한 종래 날개의 단면도.3 is a cross-sectional view of a conventional wing taken along the line A-A of FIG.
제 4 도는 본고안은 축류팬의 단면도.4 is a cross-sectional view of the axial fan.
제 5 도는 제 2 도의 A-A선을 따라 절단한 본고안 날개의 단면도.5 is a cross-sectional view of the vane blade cut along the line A-A of FIG.
제 6a, b, c, d, e 도는 본고안 축류팬의 하우징과 비교되는 다른 하우징의 예를 나타낸 단면도.Section 6a, b, c, d, e or cross-sectional view showing an example of another housing compared to the housing of the present axial fan.
제 7 도는 제 6 도의 하우징에 대한 풍량 변화 그래프.7 is a graph of the air volume change for the housing of FIG.
제 8 도는 제 6 도의 하우징에 대한 소음 변화 그래프.8 is a graph of noise change for the housing of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 하우징 5 : 날개1: housing 5: wing
본 고안에 날개를 회전시켜 바람을 송풍하는 축류팬에 관한것으로, 특히 날개와 하우징의 단면형상을 개선하여 송풍 효율을 향상시키고 소음을 감소시킬수 있도록 한것이다.The present invention relates to an axial fan that blows wind by rotating a blade, and in particular, by improving the cross-sectional shape of the blade and the housing to improve the blowing efficiency and reduce the noise.
일반적으로 축류팬은 모터에 의해 회전하는 날개부와, 몸체를 이루면서 바람의 안내 역할을 하는 하우징과, 모터를 지지 고정하는 스테이터로 구성된다.In general, the axial fan is composed of a wing that rotates by the motor, the housing constituting the body to guide the wind, and the stator supporting the motor.
제 1 도는 종래 축류팬을 나타낸 단면도로서 하우징(1)은 공기 흐름의 입구부가 되는 전면과 출구부가 되는 후면이 각각 경사지게 형성된 단면 형상으로 되어있고 스테이터(2)에 모터(3)가 고정되어 있다.1 is a cross-sectional view of a conventional axial flow fan. The housing 1 has a cross-sectional shape in which a front surface of an air flow inlet and a rear surface of an outlet portion are inclined, respectively, and the motor 3 is fixed to the stator 2.
또한 모터(3)는 허브(Hub)(4)내에 삽입 고정되어 있고 허브의 원주면에는 다수의 날개(5)가 형성되어 있다.In addition, the motor 3 is inserted into and fixed in the hub 4, and a plurality of blades 5 are formed on the circumferential surface of the hub.
제 2 도는 일반적인 축류팬의 날개 정면도로서 날개는 허브의 원주면에 일정 간격으로 다수개가 형성되며, 종래에 사용되어온 날개(5)는 제 2 도의 단면형상과 같이 동일한 두께로된 평판을 비틀린 형태로 형성한 것이었다.FIG. 2 is a front view of a wing of a general axial fan, and a plurality of wings are formed at regular intervals on the circumferential surface of the hub, and the wings 5 used in the related art are twisted in a flat plate having the same thickness as the cross-sectional shape of FIG. It was formed.
그러나 상기와 같은 종래의 축류팬은 하우징(1)의 입구부와 출구부가 경사지게 형성되고 그나머지 부분은 평탄하게 형성되어 있기 때문에 공기의 유동저항이 크고 이에 따라 풍량의 감소와 소음증가의 원인이 되었다.However, in the conventional axial flow fan as described above, since the inlet and the outlet of the housing 1 are formed to be inclined and the other portions are formed to be flat, the flow resistance of the air is large, which causes a decrease in the amount of air and an increase in noise. .
또한 날개(5)가 제 3 도와 같이 균일한 두께의 단면형상으로 되어 있어 팬의 유동이 자유스럽지 못하고 풍량을 효과적으로 증가시킬수 없다.In addition, since the blade 5 has a cross-sectional shape with a uniform thickness as in the third degree, the flow of the fan is not free and the amount of air cannot be effectively increased.
본고안의 목적은 풍량이 보다 증대되면서도 소음은 감소될수 있는 축류팬을 제공하기 위한것이다.The purpose of this paper is to provide an axial fan whose air volume can be increased while the noise is reduced.
상기한 목적을 달성하기 위해 본고안 축류팬의 하우징은 공기의 유동저항이 최대한 감소될수 있도록 공기의 입구부부터 출구부까지 곡면을 이루는 단면형상으로 되어있고 날개는 중앙부분과 양측부분의 두께가 다른 아크(Arc)형 단면 형상으로 되어있다.In order to achieve the above object, the housing of the axial fan of the present design has a cross-sectional shape that forms a curved surface from the inlet to the outlet of the air so that the flow resistance of the air can be reduced as much as possible. It has an arc-shaped cross-sectional shape.
이하 본고안을 첨부된 도면 제 4 도 내지 제 6 도를 참조하여 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to FIGS. 4 to 6.
제 4 도는 본고안 축류팬의 단면도로서 하우징(1), 스테이터(2), 모터(3), 허브(4), 날개(5)등의 기본 구성은 통상의 축류팬과 같다.4 is a cross-sectional view of the present axial fan, the basic configuration of the housing (1), the stator (2), the motor (3), the hub (4), the blade (5) and the like is the same as a conventional axial fan.
하우징(1)의 내측면은 입구부의 곡률 반경이 크고 출구부의 곡률 반경이 작은 곡면 형상으로 되어있고 하우징의 입구부로 부터 단면상 높이가 최대로 되는 위치까지의 거리(b)는 하우징의 전체폭(a)의 60%가 된다.The inner surface of the housing 1 has a curved shape with a large curvature radius of the inlet part and a small curvature radius of the outlet part, and the distance b from the inlet part of the housing to the maximum height in cross section is the overall width (a) of the housing. 60% of).
즉,이 되도록 설계되어 있다.In other words, It is designed to be.
날개(5)의 외측면도 전체적으로 곡면 형상을 이루고 있으며, 날개의 입구부로 부터 반경이 최대가 되는 위치까지의 거리(d)는 날개 전체폭(c)의 70%가 된다.The outer surface of the blade 5 also has a curved shape as a whole, and the distance d from the inlet of the blade to the position where the radius is maximum becomes 70% of the blade width c.
즉,이 되도록 설계되어 있다.In other words, It is designed to be.
또한 날개는 제 5 와 같이 중간부분의 두께가 양측 부분보다 두꺼운 아크 형상으로 되어있고 최대 두께가 되는 지점의 거리(f)가 날개 전체폭(e)의 절반, 즉가 되게 하였다.In addition, as in the fifth, the blade has an arc shape in which the thickness of the middle portion is thicker than both sides, and the distance f at the point at which the maximum thickness is the maximum is half the width e of the blade. To become.
상기와 같이된 본고안은 축류팬은 하우징(1)의 형상과 날개(5)의 형상이 변화됨에 따라 풍량이 현저히 증가하고 소음이 감소됨을 실험에 의해 확인되었다.As described above, the axial fan has been confirmed by experiments that the air volume is significantly increased and the noise is reduced as the shape of the housing 1 and the shape of the blade 5 are changed.
제 6 도는 본고안에 적용되는 하우징을 다른 하우징과 비교하기 위한 하우징의 여러형태를 나타낸 단면도로서, 하우징의 전체 외형은 92㎜×92㎜로 하였고, 하우징의 폭을 A형과 B형은 25㎜, C형과 D형은 30㎜, 본고안인 E형 35㎜로 하였다.6 is a cross-sectional view showing various types of housings for comparing the housings applied in this paper with other housings. The overall shape of the housings is 92 mm x 92 mm, and the width of the housings is 25 mm for A and B types. Form C and D were made into 30 mm and 35 mm of E-types which are the subjects.
또한 A형은 하우징의 내측면을 반원형으로, B형은 입구측보다 출구측으로 갈수록 두께가 두꺼워지는 타원형으로, C형은 입구측과 출구측 일부가 곡면이면서 중간부분은 평탄한 면으로, D형은 C형과 같은 형태에서 평탄한 면에 흡음체(두께3㎜)를 부착한 것으로, E형은 본고안과 같은 형태로 하였다.In addition, type A is a semicircular shape of the inner side of the housing, type B is an ellipse that becomes thicker toward the exit side than the inlet side, type C is a curved surface while the middle portion is a flat surface, while the D type is In the same form as the C type, the sound absorbing body (thickness 3 mm) was attached to the flat surface, and the E type was the same as the present design.
상기 여러형태의 하우징에 대한 풍량과 풍압의 변화를 조사한 결과 제 7 도와 같은 결과를 얻었으며, A형과 C형 및 E형이 B형과 D형에 비해 풍량이 많음을 알수 있고, 그 중에서도 E형이 우수하다.As a result of examining the changes in the air volume and the air pressure of the various types of housings, the same results as in the seventh degree were obtained, and it was found that A and C and E types had more air volume than B and D types, among which E The mold is excellent.
또 C형과 D형은 같은 단면 형상이지만 D형의 경우 흡음제가 공기 유동에 저항 요소가 되어 전체 풍량이 저하된 결과이다.Type C and D have the same cross-sectional shape, but in the case of type D, the sound absorbing agent becomes a resistance element to the air flow, resulting in a decrease in the total air volume.
제 8 도는 상기한 여러 형태의 하우징에 대한 소음값을 비교한 그래프로서, 반원형 단면으로된 A형과 타원형상을 이루는 B형 및 본고안인 E형의 소음이 적고 평탄한 형상으로된 C형과 D형의 소음이 큰것으로 나타났으며, 상기한 풍량과 소음을 종합적으로 비교할때 본고안의 하우징이 여타 하우징에 비해 우수한 성능을 가진다.FIG. 8 is a graph comparing noise values of various types of housings described above, in which C and D have a flat shape with low noise of type A having a semicircular cross section, type B having an elliptical shape, and type E having the main design. It was shown that the noise of the mold was large, and the housing of this paper has superior performance to other housings when comprehensively comparing the air volume and noise.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910023990U KR940007747Y1 (en) | 1991-12-26 | 1991-12-26 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910023990U KR940007747Y1 (en) | 1991-12-26 | 1991-12-26 | Fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930014724U KR930014724U (en) | 1993-07-27 |
| KR940007747Y1 true KR940007747Y1 (en) | 1994-10-24 |
Family
ID=19325646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910023990U KR940007747Y1 (en) | 1991-12-26 | 1991-12-26 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940007747Y1 (en) |
-
1991
- 1991-12-26 KR KR2019910023990U patent/KR940007747Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930014724U (en) | 1993-07-27 |
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