KR101378378B1 - Wind Tunnel For Education - Google Patents

Wind Tunnel For Education Download PDF

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KR101378378B1
KR101378378B1 KR1020120090971A KR20120090971A KR101378378B1 KR 101378378 B1 KR101378378 B1 KR 101378378B1 KR 1020120090971 A KR1020120090971 A KR 1020120090971A KR 20120090971 A KR20120090971 A KR 20120090971A KR 101378378 B1 KR101378378 B1 KR 101378378B1
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fan
discharge port
unit
wind speed
wind tunnel
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KR20140024196A (en
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김범준
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/02—Wind tunnels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/0069—Engineering, e.g. mechanical, electrical design

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Abstract

본 발명의 풍속조절이 용이한 학습용 풍동은 관찰부를 구비하며, 제 1 흡입구와 제 1 배출구를 구비한 사각형 통체(筒體)의 실험부와; 제 2 흡입구와 제 2 배출구를 구비하며, 제 2 배출구가 선풍기의 뒷면과 연결되는 사각형 통체의 팬 설치부와; 상기 팬 설치부의 제 2 흡입구와 상기 실험부의 제 1 배출구가 연통되게 연결된 비닐튜브와; 상기 제 2 배출구에 연결되는 선풍기로 이루어진 것을 특징으로 한다. The learning wind tunnel for easy adjustment of the wind speed of the present invention includes an experiment unit of a rectangular cylinder having an observation unit and having a first suction port and a first discharge port; A fan mounting portion having a rectangular cylinder having a second suction port and a second discharge port, the second discharge port being connected to the rear surface of the fan; A vinyl tube in which the second suction port of the fan installation unit and the first discharge port of the experiment unit are in communication with each other; It characterized in that the fan is connected to the second outlet.

Figure R1020120090971
Figure R1020120090971

Description

풍속 조절이 용이한 학습용 풍동{Wind Tunnel For Education}Wind tunnel for easy wind speed control {Wind Tunnel For Education}

본 발명은 학습용 풍동에 관한 것으로, 보다 상세하게는 학습용으로 간단하게 제작되어 사용될 수 있으며, 손쉽게 풍속을 조절할 수 있는 학습용 풍동에 관한 것이다.
The present invention relates to a learning wind tunnel, and more particularly, to a learning wind tunnel that can be easily produced and used for learning and can easily adjust the wind speed.

비행기 또는 비행기 날개 등의 양력을 측정하거나, 교량 또는 건물 등의 건축물 뿐만 아니라 자동차 등에 있어 바람의 영향을 측정하기 위해서는 풍동을 사용하는 경우가 많다.
Wind tunnels are often used to measure the lift of an airplane or an airplane wing, or to measure the effects of wind on automobiles, as well as on buildings such as bridges or buildings.

통상 산업용으로 제작된 풍동은 그 크기가 거대하며, 비행기나 자동차 제작사 등에 의해 건설되어 사용되므로, 실제로 초중고 학생들이 풍동에 의한 실험을 해보기 어려운 실정이다.
In general, the wind tunnel manufactured for industrial use is enormous in size, and is constructed and used by an airplane or automobile manufacturer, and thus it is difficult for students in elementary, middle and high schools to experiment with the wind tunnel.

또한, 대한민국 등록특허 10-1107610호에 개시된 도 1과 같은 학습용 풍동의 경우, 배기관(10)에 내설된 팬(20)이 배터리(30)에 의해 구동되는 것이어서 실험에 적합한 풍속을 얻기 힘들며, 대한민국 공개특허 10-2006-00090632호에 개시된 도 2와 같은 학습용 풍동은 대형 선풍기를 사용하여 강한 풍속을 얻을 수는 있으나 풍속의 조절이 선풍기(40)의 풍속 조절단계에 따라 결정될 뿐이어서 풍속을 미세하게 조절하는 것이 불가능한 문제점이 있었다.
In addition, in the case of the learning wind tunnel as shown in FIG. 1 disclosed in the Republic of Korea Patent No. 10-1107610, the fan 20 installed in the exhaust pipe 10 is driven by the battery 30, so it is difficult to obtain a wind speed suitable for the experiment. The learning wind tunnel as shown in FIG. 2 disclosed in Korean Patent Application Publication No. 10-2006-00090632 can obtain a strong wind speed using a large fan, but the wind speed is finely determined by the wind speed control step of the fan 40. There was a problem that was impossible to control.

KR 10-1107610 B, 2012.1.25., 도면 2KR 10-1107610 B, 2012.1.25., Drawing 2 KR 10-2006-00090632 A, 2006.8.14., 도면 1KR 10-2006-00090632 A, 2006.8.14., Drawing 1

상기와 같은 문제점을 해결하기 위해 안출된 본 발명은 그 구조가 간단하면서 풍속을 미세하게 조절할 수 있는 학습용 풍동을 제공하는 것을 그 목적으로 한다.
The present invention devised to solve the above problems is to provide a learning wind tunnel that can be finely controlled while the structure is simple.

본 발명의 풍속조절이 용이한 학습용 풍동은 Easy to adjust the wind speed of the present invention learning wind tunnel

관찰부를 구비하며, 제 1 흡입구와 제 1 배출구를 구비한 사각형 통체(筒體)의 실험부와;An experimental section of a rectangular cylinder having an observation section and having a first suction port and a first discharge port;

제 2 흡입구와 제 2 배출구를 구비하며, 제 2 배출구가 선풍기의 뒷면과 연결되는 사각형 통체의 팬 설치부와;A fan mounting portion having a rectangular cylinder having a second suction port and a second discharge port, the second discharge port being connected to the rear surface of the fan;

상기 팬 설치부의 제 2 흡입구와 상기 실험부의 제 1 배출구가 연통되게 연결된 비닐튜브와;A vinyl tube in which the second suction port of the fan installation unit and the first discharge port of the experiment unit are in communication with each other;

상기 제 2 배출구에 연결되는 선풍기;로 이루어진 것을 특징으로 한다.
And a fan connected to the second outlet.

상기 실험부 내부에는 프로펠러가 장착된 발전기를 설치하고, 상기 발전기와 연결된 전압측정기를 실험부 외부에 설치하여, 풍속에 의해 프로펠러가 회전하여 발생하는 전압을 실험부 외부의 전압측정기에 의해 측정할 수 있도록 하는 것이 바람직하다.
A generator equipped with a propeller may be installed inside the test unit, and a voltage meter connected to the generator may be installed outside the test unit to measure a voltage generated by the propeller rotating by the wind speed by a voltage meter outside the test unit. It is desirable to.

본 발명에 의하면, 간단한 구조로 학습용 풍동의 제작이 용이하며, 간편하게 풍속을 미세하게 조절할 수 있는 효과가 있다.
According to the present invention, it is easy to manufacture the learning wind tunnel with a simple structure, there is an effect that can easily finely adjust the wind speed.

도 1 및 도 2는 종래의 학습용 풍동을 나타낸 도.
도 3 및 도 4는 본 발명 일 실시예 풍동의 구조 및 작동관계를 나타낸 도.1 and 2 is a view showing a conventional learning wind tunnel.
3 and 4 are views showing the structure and operation of the wind tunnel according to an embodiment of the present invention.

이하, 본 발명을 그 실시예에 따라 도면을 참조하여 보다 상세하게 설명한다.
Hereinafter, the present invention will be described in more detail with reference to the drawings in accordance with embodiments thereof.

도 3은 본 실시예 학습용 풍동의 형태를 나타낸 사시도 및 단면도이다. 3 is a perspective view and a cross-sectional view showing the form of the wind tunnel for learning this embodiment.

본 실시예 학습용 풍동은 실험부(100), 팬 설치부(200), 상기 실험부(100)와 팬 설치부(200)를 연결하는 비닐튜브(300)로 대별된다.
The wind tunnel for learning this embodiment is roughly divided into a vinyl tube 300 connecting the experiment unit 100, the fan installation unit 200, the experiment unit 100 and the fan installation unit 200.

실험부(100)는 제 1 흡입구(110)와 제 1 배출구(120)를 구비한 사각형 통체(筒體)로 제작되는데, 일반 골판지 상자로 제작할 수 있다. 또한 실험부(100)의 측면과 상면에는 실험부(100)의 내부를 관찰할 수 있는 통공을 가공하고, 통공을 투명 필름으로 막은 관찰부(130)를 구비하고 있다. 실험부는 골판지 이외에도 투명한 아크릴 수지를 사용하여 제작될 수도 있는데, 이 경우, 관찰부는 실험부 벽체가 되는 것이다.
Experiment unit 100 is made of a rectangular cylinder having a first suction port 110 and the first discharge port 120, it can be produced as a normal cardboard box. In addition, the side and the upper surface of the experimental part 100 is provided with an observation part 130 for processing the through-hole which can observe the inside of the experimental part 100, and closed the through-hole with a transparent film. The test part may be manufactured using a transparent acrylic resin in addition to the corrugated paper, in which case the observation part becomes the test part wall.

팬 설치부(200) 역시 제 2 흡입구(210)와 제 2 배출구(220)를 구비하며 사각형 통체로 제작되며, 일반 골판지 상자로 제작할 수 있다. 제 2 배출구(220)는 선풍기(400)의 뒷면과 연결되게 되며, 선풍기(400)의 뒷면과 제 2 배출구(220) 사이에는 팬 설치부(200) 내부의 공기 이외 외부로부터 공기가 유입되지 않도록 테이프 등으로 밀봉하는 것이 바람직하다.
The fan installation unit 200 also includes a second suction port 210 and a second discharge port 220 and is made of a rectangular cylinder, and can be manufactured as a general cardboard box. The second outlet 220 is connected to the rear side of the fan 400, so that air is not introduced from the outside other than the air inside the fan installation unit 200 between the rear side of the fan 400 and the second outlet 220. It is preferable to seal with a tape or the like.

상기 팬 설치부(200)의 제 2 흡입구(210)와 상기 실험부(100)의 제 1 배출구(120)는 비닐튜브(300)에 의해 연통되게 연결된다.
The second suction port 210 of the fan installation unit 200 and the first discharge port 120 of the test unit 100 are connected in communication with the vinyl tube 300.

또한, 상기 실험부(100) 내부에는 프로펠러(510)가 장착된 발전기(520)를 설치하고, 상기 발전기(520)와 연결된 전압측정기(530)를 실험부(100) 외부에 설치하게 된다. 본 실시예에서는 상기 발전기(520)로 직류모터를 사용하였다. 선풍기(400)가 회전하게 되면, 상기 실험부(100)의 제 1 유입구(110)로 공기가 유입된 후 선풍기(400)의 전면으로 공기가 유출되게 되는데, 이때 실험부(100) 내부로 흐르는 공기의 흐름에 따라 프로펠러(510)가 회전하게 되며, 프로펠러(510)가 회전함에 따라 발전기(520)는 전압을 발생시키게 된다. 이렇게 발생한 전압은 실험부(100) 외부에 설치된 전압측정기(530)에 의해 측정되며, 전압과 풍속은 비례관계를 가지게 된다.
In addition, a generator 520 equipped with a propeller 510 is installed inside the experiment unit 100, and a voltage meter 530 connected to the generator 520 is installed outside the experiment unit 100. In this embodiment, a DC motor is used as the generator 520. When the fan 400 rotates, the air flows into the front surface of the fan 400 after the air flows into the first inlet 110 of the test unit 100, in which case the air flows into the test unit 100. The propeller 510 rotates as the air flows, and the generator 520 generates a voltage as the propeller 510 rotates. The voltage generated as described above is measured by the voltage meter 530 installed outside the experiment unit 100, and the voltage and the wind speed have a proportional relationship.

이하, 상기 구성을 가진 본 발명 일 실시예 학습용 풍동의 풍속 조절 방법에 대하여 설명한다.
Hereinafter, a wind speed control method of a wind tunnel for learning an embodiment of the present invention having the above configuration will be described.

먼저 도 3과 같이 비닐튜브(300)가 최대로 펴진 상태에서 실험부(100) 내에 실험할 날개(600)를 거치하게 된다. 이후, 선풍기(400)를 가동시키고, 통상 3단계로 조절가능한 선풍기의 풍속조절스위치(410)를 저속에서 고속으로 증가시켜 본다. 이러한 풍속 조절의 단계 중 어느 한 단계에서 날개(600)는 양력을 받아 상승하게 되는데, 실제 어느 정도의 풍속에서 상승이 이루어지는지 정확하게 결정할 수 없다. First, as shown in FIG. 3, in the state where the vinyl tube 300 is fully extended, the wing 600 to be tested in the experiment unit 100 is mounted. Thereafter, the fan 400 is operated, and the wind speed control switch 410 of the fan, which is usually adjustable in three stages, is increased from low speed to high speed. At any one of these wind speed control stages, the wing 600 is lifted and lifted up, but it is not possible to accurately determine how much the wind speed actually rises.

예를 들어 중속에 풍속조절 스위치(410)를 위치시켰을 때 날개(600)가 상승하게 되면, 날개(600)를 상승시킬 풍속은 중속과 저속 사이에 위치하는 것이다. 이때 선풍기(400)와 연결된 팬 설치부(200)를 실험부(100)쪽으로 이동시키게 되면 비닐튜브(300)는 도 4와 같이 그 중간 부분이 수축하게 되어, 실험부(100) 내부를 흐르는 풍속은 서서히 약해지게 되며, 날개(600)는 하강하게 된다. 다시 선풍기(400)와 연결된 팬 설치부(200)를 실험부(100)와 멀어지도록 서서히 이동시키면 날개(600)가 상승하기 시작하는 시점을 지정할 수 있게 되는데, 이때 프로펠러(510)가 장착된 발전기(520)에 의해 발생한 전압을 전압측정기(530)에 의해 측정하여 풍속을 결정할 수 있게 되며, 이러한 전압을 기록하여 다른 형상의 날개 등을 실험할 때 동일한 풍속을 정확하게 재현할 수 있게 되는 것이다.
For example, when the blade 600 is raised when the wind speed control switch 410 is positioned at the medium speed, the wind speed to raise the blade 600 is located between the medium speed and the low speed. At this time, when the fan installation unit 200 connected to the fan 400 is moved toward the experiment unit 100, the vinyl tube 300 contracts its middle portion as shown in FIG. 4, and the wind speed flowing through the experiment unit 100. Is gradually weakened, the wing 600 is lowered. When the fan installation unit 200 connected to the fan 400 again gradually moves away from the experiment unit 100, it is possible to specify a time point at which the wing 600 starts to rise, in which the propeller 510 is equipped with a generator. By measuring the voltage generated by the 520 by the voltage meter 530 it is possible to determine the wind speed, it is possible to accurately reproduce the same wind speed when experimenting with wings of different shapes by recording such a voltage.

또한, 본 실시예의 풍동에서 공기의 흐름을 관찰하기 위해서는 실험부의 제 1 유입구 측에 연기를 발생시킬 수 있는 향 등을 피우게 되면 날개의 상하면을 흐르는 공기의 흐름을 관찰할 수도 있다.
In addition, in order to observe the flow of air in the wind tunnel of the present embodiment, when the incense, etc., which may generate smoke on the first inlet side of the test unit, the flow of air flowing through the upper and lower surfaces of the wing may be observed.

100 : 실험부 110 : 제 1 흡입구 120 : 제 1 배출구 130 : 관찰부
200 : 팬 설치부 210 : 제 2 흡입구 220 : 제 2 배출구
300 : 비닐튜브 400 : 선풍기 510 : 프로펠러 520 : 발전기
530 : 전압측정기 600 : 날개Reference Numerals 100 Experimental Part 110 First Inlet Port 120 First Outlet 130 Observation Section
200: fan mounting portion 210: second inlet 220: second outlet
300: vinyl tube 400: fan 510: propeller 520: generator
530: voltage meter 600: wing

Claims (2)

관찰부를 구비하며, 제 1 흡입구와 제 1 배출구를 구비한 사각형 통체(筒體)의 실험부와;
제 2 흡입구와 제 2 배출구를 구비하며, 제 2 배출구가 선풍기의 뒷면과 연결되는 사각형 통체의 팬 설치부와;
상기 팬 설치부의 제 2 흡입구와 상기 실험부의 제 1 배출구가 연통되게 연결된 비닐튜브와;
상기 제 2 배출구에 연결되는 선풍기로 이루어진 것을 특징으로 하는 풍속조절이 용이한 학습용 풍동.

An experimental section of a rectangular cylinder having an observation section and having a first suction port and a first discharge port;
A fan mounting portion having a rectangular cylinder having a second suction port and a second discharge port, the second discharge port being connected to the rear surface of the fan;
A vinyl tube in which the second suction port of the fan installation unit and the first discharge port of the experiment unit are in communication with each other;
Wind tunnel for easy wind speed control, characterized in that consisting of a fan connected to the second outlet.

제 1 항에 있어서,
상기 실험부 내부에는 프로펠러가 장착된 발전기를 설치하고, 상기 발전기와 연결된 전압측정기를 실험부 외부에 설치하여, 풍속에 의해 프로펠러가 회전하여 발생하는 전압을 실험부 외부의 전압측정기에 의해 측정할 수 있도록 연결하는 것을 특징으로 하는 풍속조절이 용이한 학습용 풍동.
The method according to claim 1,
A generator equipped with a propeller may be installed inside the test unit, and a voltage meter connected to the generator may be installed outside the test unit to measure a voltage generated by the propeller rotating by the wind speed by a voltage meter outside the test unit. Wind tunnel for easy wind speed control, characterized in that to connect so.
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