KR20030064179A - A silencer of ventilator - Google Patents

A silencer of ventilator Download PDF

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Publication number
KR20030064179A
KR20030064179A KR1020020004685A KR20020004685A KR20030064179A KR 20030064179 A KR20030064179 A KR 20030064179A KR 1020020004685 A KR1020020004685 A KR 1020020004685A KR 20020004685 A KR20020004685 A KR 20020004685A KR 20030064179 A KR20030064179 A KR 20030064179A
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KR
South Korea
Prior art keywords
noise
blower
sound absorbing
cone
canvas
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KR1020020004685A
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Korean (ko)
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KR100455553B1 (en
Inventor
임대훈
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주식회사 삼정기연
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Priority to KR10-2002-0004685A priority Critical patent/KR100455553B1/en
Publication of KR20030064179A publication Critical patent/KR20030064179A/en
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Publication of KR100455553B1 publication Critical patent/KR100455553B1/en

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Classifications

    • 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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A blower having a noise removing device is provided to reduce noise by installing the noise removing device at an inner portion of an outlet cone. CONSTITUTION: A blowing fan(3) is accommodated in a housing(2). An inlet canvas having a bellmouth(5) is installed at an air feeding side of the housing(2). An outlet cone(7) is mounted on an air outlet side of the housing through an outlet canvas(6). A noise removing device(10) is installed in the outlet cone(7) in order to absorb noise generated from an inner portion of the outlet cone(7). The noise removing device(10) is supported by a supporting bar in the outlet cone(7). The noise removing device(10) is formed at an outer portion thereof with a sound absorbing hole filled up with sound absorbing material. The sound absorbing material includes glass wool.

Description

소음제거장치가 구비된 송풍기{A SILENCER OF VENTILATOR}Blower with noise reduction device {A SILENCER OF VENTILATOR}

본 발명은 통상적으로 공기를 송풍시켜 공급 또는 배출시킬 때에 사용되는 송풍장치에서 발생되는 소음을 제거 해 줄 수 있도록 소음제거장치가 구비된 송풍기에 관한 것이다.The present invention relates to a blower equipped with a noise removing device so as to remove the noise generated in the blower used when the air is usually supplied or discharged by blowing air.

이를 좀 더 상세히 설명하면, 송풍기의 선단에 구비되는 아웃랫콘(OUTLET CONE)의 내부에 흡음재가 충진되어 있는 다공틀을 구비하여 송풍기를 통하여 공기를 공급(배출)시킬 때에 송풍기에서 발생되는 소음과 공기가 유통되면서 발생되는 소음이 다공틀에 뚫어진 흡음공을 통하여 다공틀의 내부로 흡음되어 소멸되어지도록 된 것이다.In more detail, it is provided with a porous frame filled with a sound absorbing material in the inside of the outer cone (OUTLET CONE) provided at the tip of the blower, the noise generated by the blower when the air is supplied (discharged) through the blower The noise generated while being distributed is absorbed into the inside of the porous frame through the sound-absorbing hole drilled in the porous frame to be extinguished.

도 3은 통상적으로 사용되는 종래 송풍기(1-1)의 구조 및 설치상태를 보인 단면도이다.3 is a cross-sectional view showing the structure and installation state of a conventional blower (1-1) that is commonly used.

종래의 송풍기(1-1)는 모터에 의해 팬을 회전시키도록 된 송풍팬(3)이 내부에 장착되어 있는 하우징(2)의 공기 공급 측에는 인랙캔버스(4)가 구비되어 있고 배출 측에는 아웃랫캔버스(6)를 통하여 아웃랫콘(7)이 장착되어 있다.The conventional blower (1-1) is provided with an in-canvas canvas (4) on the air supply side of the housing (2) in which the blower fan (3), which is designed to rotate the fan by a motor, is provided inside, and on the discharge side, the outer The outline cone 7 is mounted through the canvas 6.

이와 같이 구성된 종래의 송풍기(1-1)에는 소음을 제거해 주도록 된 장치가 구비되어 있지 않으므로 송풍기(1-1)를 가동시키게 되면 많은 소음이 발생하게 되는 문제가 있었다.Since the conventional blower 1-1 configured as described above is not provided with a device for removing noise, there is a problem that a lot of noise is generated when the blower 1-1 is operated.

이와 같이 발생되는 소음을 줄이기 위해서는 송풍기(1-1)에 공기가 공급되는 공급 측과 송풍된 공기가 배출되는 배출 측에 별도의 소음기(21)·(24)를 각각 설치해 주어야 했다. 즉, 공기가 공급되는 공급 측에는 인랙캔버스(4)와는 벨마우스(5)를 통하여 챔버(20)를 설치하고 그 선행 측에는 소음기(21)와 댐퍼(22) 및 유입측스크린(23)이 설치해 주어야 했고, 배출측에는 아웃랫콘(7)의 외측에 소음기(24)와 배출스크린(25)을 설치해 주었다.In order to reduce the noise generated in this way, separate silencers 21 and 24 should be provided respectively on the supply side to which the air is supplied to the blower 1-1 and the discharge side to which the blown air is discharged. That is, the chamber 20 is installed on the supply side to which the air is supplied through the bellows 5 and the in rack canvas 4, and the silencer 21, the damper 22, and the inlet side screen 23 must be installed on the preceding side. On the discharge side, a silencer 24 and a discharge screen 25 were installed on the outside of the outer cone 7.

이와 같이 종래의 송풍기(1-1)는 자체적으로 소음을 제거해 주도록 된 장치가 설치되어 있지 않으므로 송풍기(1-1)의 전후방에 별도의 소음기(21)·(24)를 장착시켜 주어야 하는 번거로움이 있었고, 그로 인하여 설치비용이 많이 소용될 뿐만 아니라 부피가 커져 설치공간과 면적을 많이 차지하게 되는 문제가 있었다.Thus, since the conventional blower (1-1) is not equipped with a device to remove noise by itself, it is cumbersome to install separate silencers (21) and (24) before and after the blower (1-1). There was a problem that, because of the installation cost is not only a lot of use, but also bulky occupy a lot of installation space and area.

본 발명은 상기와 같은 문제를 해소할 수 있도록 개선된 소음제거장치가 구비된 송풍기를 제공하려는 것이다.The present invention is to provide a blower equipped with an improved noise reduction device to solve the above problems.

본 발명은 송풍팬이 내장된 하우징의 공기 공급측에는 벨마우스가 구비된 인렛캔버스를 장착하고, 배출측에는 아웃랫캔버스를 통하여 아웃랫콘을 장착한 것에 있어서, 아웃랫콘의 내부에 소음제거장치를 설치하여서 된 소음제거장치가 구비된 송풍기를 제공하려는데 그 목적이 있다.The present invention is equipped with an inlet canvas equipped with a bell mouse on the air supply side of the housing in which the blower fan is built-in, the outlet cone is mounted on the discharge side through the outer canvas, by installing a noise canceling device inside the outer cone It is an object of the present invention to provide a blower equipped with a noise canceling device.

본 발명의 다른 목적은 소음제거장치를 송풍되는 공기가 배출되는 아웃랫콘의 내부에 설치하여 줌으로써 송풍되는 공기에서 발생되는 소음과 송풍기가 작동하면서 발생시키는 소음이 함께 제거할 수 있도록 된 소음제거장치가 구비된 송풍기를 제공하려는 것이다.Another object of the present invention is to install a noise reduction device in the inside of the out-cone discharged air blown noise removing device that can remove the noise generated in the air blown and the noise generated while the blower is operating together It is to provide a blower provided.

본 발명의 또 다른 목적은 아웃랫콘의 내부에 설치되는 소음제거장치를 형성함에 있어, 외면에 흡음공이 무수히 뚫어진 다공틀의 내부에 흡음재로서 글래스울을 충진시켜 줌으로써 소음이 용이하게 유입되어 소멸될 수 있고, 구조가 간단하여 낮은 제작비용으로 용이하게 제작 및 설치도 할 수 있도록 된 소음제거장치가 구비된 송풍기를 제공하려는 것이다.Still another object of the present invention is to form a noise removing device installed in the inside of the cone cone, by filling the glass wool as a sound absorbing material inside the porous frame with a number of sound-absorbing holes on the outer surface can be easily introduced into the noise can be extinguished In addition, the structure is simple to provide a blower with a noise reduction device that can be easily manufactured and installed at a low production cost.

본 발명의 또 다른 목적은 공기가 송풍 배출되는 아웃랫콘의 내부에 소음제거장치를 설치하여 소음을 제거하여 줌으로써, 송풍장치를 설치할 때에 종래와 같이 송풍장치의 전후부(유입배출)에 별도의 소음기를 설치하여야 하는 번거로움을 배제시킬 수 있고, 더불어 설치비용 등을 절감할 수 있도록 된 소음제거장치가 구비된 송풍기를 제공하려는 것이다.Another object of the present invention is to install a noise removing device in the inside of the cone cone in which the air is blown out to remove the noise, when installing the blower separate silencer in front and rear (inlet discharge) of the blower as in the prior art To eliminate the hassle to install, and to provide a blower equipped with a noise reduction device that can reduce the installation cost and the like.

본 발명의 상기 및 기타목적은,The above and other objects of the present invention,

송풍팬(3)이 내장된 하우징(2)의 공기 공급측에는 벨마우스(5)가 구비된 인렛캔버스(4)를 장착하고, 배출측에는 아웃랫캔버스(6)를 통하여 아웃랫콘(7)을 장착한 것에 있어서,An inlet canvas 4 equipped with a bell mouse 5 is mounted on the air supply side of the housing 2 in which the blower fan 3 is built in, and an outer cone 7 is mounted on the discharge side through the outer canvas 6. In one thing,

상기 아웃랫콘(7)의 내부에는 배출되는 소음을 흡음되어 소멸되어지도록 된 소음제거장치(10)를 지지바(14)에 의해지지 설치하여서 된 것을 특징으로 하는 소음제거장치가 구비된 송풍기(1)에 의해 달성된다.The blower (1) having a noise removing device (1) characterized in that the noise canceling device (10) is supported and supported by the support bar (14) to absorb and dissipate the discharged noise inside the outer cone (7). Is achieved by

도 1은 본 발명에 따른 소음제거장치가 송풍기에 설치된 상태를 보인 단면 도.1 is a cross-sectional view showing a state in which the noise reduction device according to the present invention is installed in the blower.

도 2a 및 도 2b는 본 발명에 따른 소음제거장치를 발췌하여 보인 측 단면도 및 배면도.Figures 2a and 2b is a side cross-sectional view and a rear view showing an extracting device according to the present invention.

도 3은 종래의 송풍기가 설치된 상태를 보인 단면도.3 is a cross-sectional view showing a state in which a conventional blower is installed.

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

1. 송풍기 2. 하우징 3. 송풍팬1. Blower 2. Housing 3. Blower Fan

4. 인랫캔바스 6. 아웃랫캔바스 10. 소음제거장치4. Inner canvas 6. Outer canvas 10. Noise reduction device

11. 다공틀 12. 흡음공 13. 흡음재11. Perforated frame 12. Sound absorbing hole 13. Sound absorbing material

14. 지지바 20. 챔버 21.24. 소음기14. Support bar 20. Chamber 21.24. silencer

22. 댐퍼 23. 유입측스크린 25. 배출측스크린22. Damper 23. Inlet Screen 25. Outlet Screen

본 발명의 상기 및 기타 목적과 특징은 첨부도면에 의거한 다음의 상세한 설명에 의해 더욱 명확하게 이해 할 수 있을 것이다.The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

첨부도면 도 1 내지 도 2b는 본 발명에 따른 송풍기(1)의 구체적인 실시예를 보인 것으로서, 도 1은 본 발명에 따른 송풍기(10)를 설치한 상태를 보인 것이고, 도 2a 및 도 2b는 본 발명에 따른 송풍기(1)를 발췌하여 보인 측 단면도 및 배면도이다.1 to 2b show a specific embodiment of the blower 1 according to the present invention, and FIG. 1 shows a state in which the blower 10 according to the present invention is installed, and FIGS. 2a and 2b show Side cross-sectional view and back view showing the blower 1 which concerns on this invention.

본 발명에 따른 송풍기(1)는 하우징(2)의 내부에 모터의 회전축에 임펠러가장착된 송풍팬(3)을 설치하였고, 하우징(2)에서 공기가 흡입되는 공급 측에는 인랫캔버스(4)와 벨마우스(5)를 설치하였으며, 배출 측에는 아웃랫캔버스(6)와 아웃랫콘(6)을 설치하였다.The blower 1 according to the present invention has a blower fan 3 having an impeller mounted on a rotating shaft of a motor inside the housing 2, and an inlet canvas 4 on the supply side through which air is sucked from the housing 2. Bell mouse (5) was installed, and the discharge canvas (6) and the outer cone (6) was installed on the discharge side.

이와 같은 구조는 종래의 송풍기(1-1)와 동일한 구조이므로 보다 구체적인 설명은 생략하기로 한다.Since this structure is the same as the conventional blower 1-1, more detailed description will be omitted.

이와 같이 설치한 상태에서 아웃랫콘(7)의 내부에는 소음제거장치(10)를 설치하였다.In this state of installation, the noise canceling device 10 was installed inside the outer cone 7.

상기 소음제거장치(10)는 도 2a에 구체적으로 도시되어 있는 바와 같이 외면에 소음이 흡음될 수 있도록 흡음공(12)이 뚫어진 다공틀(11)을 형성하고, 그 다공틀(11)의 내부에는 흡음되는 소음을 소멸시켜 줄 수 있도록 흡음재(13)를 충진시켜 주었으며, 상기 흡음재(13)로서는 그래스울을 충진시켜 주었다.The noise removing device 10 forms a porous frame 11 in which a sound absorbing hole 12 is perforated so that noise can be absorbed on the outer surface, as shown in FIG. 2A, and the inside of the porous frame 11. Was filled with the sound absorbing material 13 to dissipate the sound absorbed by the sound absorbing material, and filled with the glass wool as the sound absorbing material 13.

이와 같이 내부에 흡음재(13)로서 그래스울이 충진된 다공틀(11)을 지지바(14)를 이용하여 아웃랫콘(7)의 내부에 장착하였는데, 도시된바와 같이 아웃랫콘(7)의 내부의 중앙부에 위치하도록 설치하여 배출되는 소음이 고르게 흡음되어 질수 있도록 하였다.As such, the porous frame 11 filled with the glass wool as the sound absorbing material 13 therein was mounted to the inside of the outer cone 7 by using the support bar 14, as shown in the inside of the outer cone 7. It is installed so that it can be absorbed evenly.

이하, 사용상태를 설명한다.The use state will be described below.

이와 같이 소음제거장치(10)가 아웃랫콘(7)의 내부 중앙에 구비된 송풍기(1)를 설치할 때에 종래와 같이 전후(유입/배출)부에 소음기(21)·(24)의 설치를 생략하여 설치할 수 있으며, 도 1에 도시된 바와 같이 하우징(2)의 유입 측에 설치되는 인랫캔버스(4) 및 벨마우스(5)의 선행 측에 통상의 챔버(20)와 댐퍼(22) 및 유입측스크린(23)을 설치하였고, 배출 측에는 아웃랫콘(7)의 후행 측에 배출스크린(25)을 직접 설치하였다.Thus, when the noise canceller 10 installs the blower 1 provided in the inner center of the outer cone 7, the silencer 21 and 24 are abbreviate | omitted in the front-back (inflow / outflow) part conventionally. As shown in FIG. 1, the chamber 20, the damper 22, and the inlet of the inlet canvas 4 and the bell mouse 5 are installed on the inlet side of the housing 2 as shown in FIG. 1. The side screen 23 was installed, and the discharge screen 25 was directly installed on the trailing side of the outrun cone 7 on the discharge side.

이와 같이 소음제거장치(10)가 구비된 송풍기(1)를 설치한 상태에서 송풍기(1)를 작동시켜 공기를 강제로 공급시켜 준다.In this way, by operating the blower (1) in the state in which the blower (1) provided with a noise removing device 10 is forced to supply air.

스위치(구체적으로 도시하지 아니함)를 조작하여 송풍기(1)의 송풍팬(3)을 작동시키게 되면 모터가 작동하면서 임펠러를 회전시키게 되고, 임펠러가 회전하게 되면 흡입력이 발생하게 되므로 외기는 유입측스크린(23)을 통하여 흡입되어 댐퍼(22)와 챔버(20)로 유입되어진 후에 송풍팬(3)에 의해 강제로 송풍되어 아웃랫콘(7)으로 배출되어지며, 배출스크린(25)을 통하여 소정의 목적지로 송풍 공급되어진다.When operating the blower fan 3 of the blower 1 by operating a switch (not shown in detail), the impeller is rotated while the motor is operating. When the impeller is rotated, suction force is generated. After being sucked through 23 and introduced into the damper 22 and the chamber 20, it is forcibly blown by the blower fan 3 and discharged to the outer cone 7, and is discharged through the discharge screen 25. Ventilation is supplied to the destination.

상기와 같이 공기가 송풍될 때에 공기와 함께 아웃랫콘(7)으로 배출되어지는 소음은 아웃랫콘(7)의 내부에 설치된 소음제거장치(10)에 의해 제거되어진다.When the air is blown as described above, the noise discharged to the outer cone 7 together with the air is removed by the noise reduction device 10 installed inside the outer cone 7.

즉, 아웃랫콘(7)으로 배출되어지는 소음은 다공틀(11)의 외부에 뚫어져 있는 흡음공(12)을 통하여 다공틀(11)의 내부로 흡음되어지고, 흡음된 소음은 내부에 충진된 흡음재(13)인 그래스울의 내부로 유입되면서 소멸되어진다.That is, the noise discharged to the outer cone 7 is absorbed into the interior of the porous frame 11 through the sound absorbing hole 12 which is drilled outside the porous frame 11, and the absorbed noise is filled in the interior. As the sound absorbing material 13 is introduced into the glass wool, it is extinguished.

특히 일부의 소음은 아웃랫콘(7)의 내면과 충돌하고 배출스크린(25)에 의해 소멸될 뿐만 아니라 반사 굴절된 소음은 흡음공(12)을 통하여 다공틀(11)의 내부로 유입되어서 소멸되어지며, 이와 같이 소음제거장치(10)에 의해 소음이 제거되어진 공기는 조용한 상태를 유지하면서 목적지로 송풍되어진다.Particularly, the noise collides with the inner surface of the outer cone 7 and is extinguished by the discharge screen 25 as well as the reflected refracted noise is introduced into the porous frame 11 through the sound absorbing hole 12 to be extinguished. In this way, the air from which the noise is removed by the noise reduction device 10 is blown to the destination while maintaining a quiet state.

상기와 같이 송풍팬(3)의 작동에 의해 공기를 강제로 유입하면서 발생되는소음과 송풍팬(3)이 작동하면서 발생하는 소음은 아웃랫콘(7)을 통과할 때에 소음제거장치(10)에 의해 흡음되어 소멸되어지므로 송풍팬(3)은 보다 조용한 분위기를 유지하면서 작동하게 되고, 송풍되는 공기는 조용한 상태로 배출되어진다.As described above, the noise generated while forcibly introducing the air by the operation of the blower fan 3 and the noise generated while the blower fan 3 operates are transmitted to the noise canceling device 10 when passing through the outline cone 7. By being absorbed and extinguished by the blower fan 3, the blower fan 3 operates while maintaining a quieter atmosphere, and the blown air is discharged in a quiet state.

이상에서와 같이 본 발명에 따른 송풍기에는 소음제거장치가 구비되어 있으므로 공기를 강제로 유입하면서 발생되는 소음과 송풍팬의 작동에 의해 발생되는 소음은 아웃랫콘을 통과할 때에 소음제거장치에 의해 흡음되어 소멸되어지므로 송풍팬을 보다 조용하게 작동시킬 수 있게 되고 송풍되는 공기도 조용한 상태로 배출시킬 수 있으며, 아웃랫콘에 설치된 소음제거장치에 의해 소음을 제거시켜 주므로 송풍기를 설치할 때에 송풍기의 전후에 설치되던 소음기를 제거하여 설치할 수 있으므로 설비비용과 운용비용을 낮출 수 있게 된다.As described above, since the blower according to the present invention is provided with a noise removing device, noise generated by forcibly introducing air and noise generated by the operation of the blower fan are absorbed by the noise removing device when passing through the out cone. Since it is extinguished, the fan can be operated more quietly, and the blown air can be discharged in a quiet state, and the noise is removed by the noise canceling device installed in the outer cone, so that the silencer installed before and after the blower when the blower is installed Can be installed by removing the installation cost and operating cost can be lowered.

Claims (3)

송풍팬(3)이 내장된 하우징(2)의 공기 공급측에는 벨마우스(5)가 구비된 인렛캔버스(4)를 장착하고, 배출측에는 아웃랫캔버스(6)를 통하여 아웃랫콘(7)을 장착한 것에 있어서,An inlet canvas 4 equipped with a bell mouse 5 is mounted on the air supply side of the housing 2 in which the blower fan 3 is built in, and an outer cone 7 is mounted on the discharge side through the outer canvas 6. In one thing, 상기 아웃랫콘(7)의 내부에는 배출되는 소음을 흡음되어 소멸되어지도록 된 소음제거장치(10)를 지지바(14)에 의해지지 설치하여서 된 것을 특징으로 하는 소음제거장치가 구비된 송풍기.The blower provided with a noise canceling device, characterized in that the inside of the outer cone (7) by the support bar 14 to install the noise canceling device 10 to be absorbed by the noise to be extinguished. 청구항 1에 있어서, 소음제거장치(10)는 외면에 흡음공(12)이 다공틀(11)의 내부에 흡음재(13)를 충진시켜서 된 것을 특징으로 하는 소음제거장치가 구비된 송풍기.The blower according to claim 1, wherein the noise canceling device (10) is a sound absorbing hole (12) filled in the sound absorbing material (13) inside the porous frame (11) on the outer surface. 청구항 2에 있어서, 다공틀(11)의 내부에 충진되는 흡음재(13)는 그래스울인 것을 특징으로 하는 소음제거장치가 구비된 송풍기.The blower according to claim 2, wherein the sound absorbing material (13) filled in the porous frame (11) is glass wool.
KR10-2002-0004685A 2002-01-26 2002-01-26 A silencer of ventilator KR100455553B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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CN103836007A (en) * 2014-03-07 2014-06-04 巴克约根森风机（宁波）有限公司 Fan with silencer
CN111927831A (en) * 2020-07-17 2020-11-13 北方华锦化学工业股份有限公司 Silencer for treating noise of centrifugal fan
KR102214181B1 (en) * 2020-09-25 2021-02-08 박상달 Guide structure body for ventilation apparatus and ventilation apparatus
WO2022166156A1 (en) * 2021-02-07 2022-08-11 李卫东 Silencing device for fan, and fan
CN115013604A (en) * 2021-07-09 2022-09-06 无锡轩宇冷暖科技有限公司 Air pipe with wind noise reducing function

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KR101291711B1 (en) * 2010-11-04 2013-07-31 주식회사 에코다임 Silencer for Exhaust Pipe

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JPS60170100U (en) * 1984-04-20 1985-11-11 松下精工株式会社 Silencer for axial blower
US4786231A (en) * 1986-12-01 1988-11-22 Kelley Winfield L Noise attenuating and air streamlining spiral
JP3072171B2 (en) * 1991-12-25 2000-07-31 日本ノイズコントロール株式会社 Air flow guide silencer on fan suction side
KR200260752Y1 (en) * 1999-06-09 2002-01-17 김태형 Soundproofing-type fan
KR100340025B1 (en) * 1999-08-16 2002-06-10 삼남테크 주식회사 A both direction ventilated system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103836007A (en) * 2014-03-07 2014-06-04 巴克约根森风机（宁波）有限公司 Fan with silencer
CN111927831A (en) * 2020-07-17 2020-11-13 北方华锦化学工业股份有限公司 Silencer for treating noise of centrifugal fan
KR102214181B1 (en) * 2020-09-25 2021-02-08 박상달 Guide structure body for ventilation apparatus and ventilation apparatus
WO2022166156A1 (en) * 2021-02-07 2022-08-11 李卫东 Silencing device for fan, and fan
CN115013604A (en) * 2021-07-09 2022-09-06 无锡轩宇冷暖科技有限公司 Air pipe with wind noise reducing function

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