KR19990001853U - Shape of Centrifugal Blower Impeller for Noise Reduction - Google Patents

Shape of Centrifugal Blower Impeller for Noise Reduction Download PDF

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Publication number
KR19990001853U
KR19990001853U KR2019970015343U KR19970015343U KR19990001853U KR 19990001853 U KR19990001853 U KR 19990001853U KR 2019970015343 U KR2019970015343 U KR 2019970015343U KR 19970015343 U KR19970015343 U KR 19970015343U KR 19990001853 U KR19990001853 U KR 19990001853U
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KR
South Korea
Prior art keywords
impeller
centrifugal blower
shape
noise
noise reduction
Prior art date
Application number
KR2019970015343U
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Korean (ko)
Inventor
이철형
박완순
정종안
Original Assignee
손영목
한국에너지기술연구소
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 손영목, 한국에너지기술연구소 filed Critical 손영목
Priority to KR2019970015343U priority Critical patent/KR19990001853U/en
Publication of KR19990001853U publication Critical patent/KR19990001853U/en
Priority to KR2019990016275U priority patent/KR200173233Y1/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
    • F04D29/30Vanes
    • 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
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666Combating 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
    • 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
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667Combating 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

원심송풍기의 구동시 발생하는 소음을 절감시키기 위한 원심송풍기 소음저하용 임페럴의 형상에 관한 것으로, 종래의 임펠러의 형태는 변경하지 않고 종래의 임펠러 깃(5) 사이에 길이가 짧은 소음저하용 깃(8)을 삽입함으로써 임펠러의 깃끝(4)과 차단면(7)의 간격을 증가시켜, 임펠러의 깃끝(4)이 차단면(7)과 교차할 때의 발생하는 압력의 맥동현상을 부드럽게 하여줌으로써 원심송풍기가 구동될 때 발생되는 소음을 감소시킬 수 있게 한 소음저하용 깃(8)을 갖는 임펠러의 형상으로써 모든 원심송풍기의 임펠러에 적용할 수 있게 한 것을 특징으로 한 소음저하용 원심송풍기 임펠러의 형상The present invention relates to a shape of a centrifugal blower noise reducing impeller for reducing noise generated when driving a centrifugal blower, and has a short noise reduction collar between the conventional impeller blades 5 without changing the shape of a conventional impeller. By inserting (8), the gap between the tip 4 of the impeller and the blocking surface 7 is increased to soften the pulsation of the pressure generated when the tip 4 of the impeller intersects with the blocking surface 7. Noise reduction centrifugal blower impeller characterized by the shape of the impeller having a noise reducing feather (8) to reduce the noise generated when the centrifugal blower is driven by applying to all impellers of the centrifugal blower Shape

Description

소음저하용 원심송풍기 임펠러의 형상Shape of Centrifugal Blower Impeller for Noise Reduction

본 고안은 원심송풍기에서 발생하는 소음을 감소시키는 원심송풍기 임펠러의 형상에 관한 것으로, 본 고안의 소음저하용 원심송풍기 임펠러는 원심송풍기에서 발생하는 소음을 감소시켜 이로 인한 소음공해를 낮출 수 있다.The present invention relates to the shape of the centrifugal blower impeller to reduce the noise generated in the centrifugal blower, the noise reduction centrifugal blower impeller of the present invention can reduce the noise caused by the noise generated in the centrifugal blower.

도 1은 종래의 원심송풍기의 구조를 나타내는 것으로써, 이는 흡입구(1), 임펠러(2), 케이싱(3)으로 구성되며, 케이싱(3)은 임펠러(2)를 감싸는 형태로써, 기체가 흡입구(1)로 유입되고, 임펠러(2)의 깃(5)을 통과하면서 에너지를 공급받아 토출구(6)로 배출된다.Figure 1 shows the structure of a conventional centrifugal blower, which is composed of a suction port (1), an impeller (2), a casing (3), the casing (3) wraps around the impeller (2), the gas inlet It flows into (1), receives energy while passing through the collar 5 of the impeller 2, and discharges it to the discharge port 6.

도 1에서와 같이 원심송풍기의 임펠러(2)가 회전할 때, 임펠러의 깃끝(4)은 케이싱(3)의 차단면(7)과 연속적으로 교차하며, 압력이 맥동현상을 일으켜 소음을 발생시키므로 임펠러(2)의 형태를 수정함으로써 원심송풍기에서 발생하는 소음을 감소시킬 수 있다는 가능성을 제공하여 준다.When the impeller 2 of the centrifugal blower rotates as shown in FIG. 1, the feather tip 4 of the impeller crosses continuously with the blocking surface 7 of the casing 3, and the pressure causes pulsation to generate noise. Modifying the shape of the impeller 2 offers the possibility of reducing the noise generated in the centrifugal blower.

차단면(7)은 케이싱(3)측에서 임펠러(2)의 깃끝(4)과 가장 가까운 케이싱의 하단부이다.The blocking surface 7 is the lower end of the casing closest to the feather tip 4 of the impeller 2 on the casing 3 side.

본 고안의 목적은 임펠러가 회전할 때 케이싱의 차단면에서의 맥동현상으로 인하여 발생하는 소음을 감소시키는 것으로서 원심송풍기의 구동시 발생하는 소음을 절감시키기 위한 원심송풍기 소음저하용 임페럴의 형상이며 종래의 임펠러의 형태는 변경하지 않고 종래의 임펠러 깃 사이에 길이가 짧은 소음저하용 깃을 삽입함으로써 임펠러의 깃끝과 차단면의 간격을 증가시켜, 임펠러의 깃끝이 차단면과 교차할 때의 발생하는 압력의 맥동현상을 부드럽게 하여줌으로써 원심송풍기가 구동될 때 발생되는 소음을 감소시킬 수 있게 한 깃을 갖는 임펠러의 형상이다.The purpose of the present invention is to reduce the noise caused by the pulsation phenomenon in the blocking surface of the casing when the impeller rotates, and to reduce the noise generated when the centrifugal blower is driven, it is the shape of the impeller for reducing noise. The pressure generated when the tip of the impeller intersects the blocking surface by increasing the distance between the tip of the impeller and the blocking surface by inserting a short noise reduction feather between conventional impeller blades without changing the shape of the impeller. It is the shape of the impeller with a feather which makes it possible to reduce the noise generated when the centrifugal blower is driven by softening the pulsation phenomenon of the centrifugal blower.

모든 원심송풍기의 임펠러에 적용할 수 있는 소음저하용 원심송풍기 임펠러의 형상으로 완성되어 있다.It is completed in the shape of noise reduction centrifugal blower impeller applicable to all centrifugal blower impellers.

도 1은 기존의 원심송풍기의 임펠러와 케이싱의 구조를 나타내는 단면도1 is a cross-sectional view showing the structure of an impeller and a casing of a conventional centrifugal blower

도 2는 본 고안의 소음저하용 원심송풍기 임펠러의 형상을 나타내는 단면도 및 설명도Figure 2 is a cross-sectional view and explanatory drawing showing the shape of the noise reduction centrifugal blower impeller of the present invention

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

(1) : 흡입구(2) : 임펠러(1): suction port (2): impeller

(3) : 케이싱(4) : 깃끝(3): casing (4): feather tip

(5) : 깃(6) : 토출구(5): feather (6): discharge port

(7) : 차단면(8) : 소음저하용 깃(7): blocking surface (8): noise reduction feather

이하, 첨부된 도면 제 2 도를 참조하여 본 고안의 실시예를 구체적으로 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to FIG. 2.

도 2는 본 고안의 소음저하용 깃(8)을 갖는 원심송풍기 임페러의 형상을 나타내는 도면으로, 종래의 임펠러 깃(5) 사이에 길이가 짧은 소음저하용 깃(8)을 삽입하여 종래의 임펠러를 수정함으로써 임펠러의 깃끝(4)과 차단면(7)의 간격을 증가시켜, 소음저하용 임펠러 깃끝(4)이 차단면(7)과 교차할 때 발생하는 압력의 맥동현상을 부드럽게 하여줌으로써 원심송풍기가 구동될 때 발생하는 소음을 감소시킬 수 있음을 요지로 한다.2 is a view showing the shape of a centrifugal blower impeller having a noise reduction feather 8 according to the present invention, and a conventional noise reduction feather 8 is inserted between the conventional impeller blades 5. By modifying the impeller, the gap between the tip 4 and the blocking surface 7 of the impeller is increased, thereby softening the pulsation of pressure generated when the noise-reducing impeller tip 4 intersects the blocking surface 7. The point is that noise generated when the centrifugal blower is driven can be reduced.

다시 말하자면 원심송풍기 임펠러(2)가 회전할 때, 임펠러의 깃끝(4)은 케이싱(3)측에서 임펠러(2)의 깃끝(4)과 가장 가까운 차단면(7)과 연속적으로 교차하며, 이 때 압력이 맥동현상을 일으켜 소음을 발생시키므로 종래의 임펠러의 형태는 변경하지 않고 종래의 임펠러 깃(5) 사이에 길이가 짧은 소음저하용 깃(8)을 삽입함으로써 임펠러의 깃끝(4)과 차단면(7)의 간격을 증가시켜, 임펠러의 깃끝(4)이 차단면(7)과 교차할 때의 발생하는 압력의 맥동현상을 부드럽게 하여줌으로써 원심송풍기가 구동될 때 발생되는 소음을 감소시킬 수 있게 한 소음저하용 깃(8)을 갖는 임펠러의 형상으로써 모든 원심송풍기의 임펠러에 적용할 수 있게 한 것이다.In other words, when the centrifugal blower impeller 2 rotates, the feather tip 4 of the impeller continuously intersects the blocking surface 7 closest to the feather tip 4 of the impeller 2 on the casing 3 side. When the pressure causes pulsation to generate noise, a short noise reduction feather 8 is inserted between the impeller blades 5 and is blocked from the tip end 4 of the impeller without changing the shape of the conventional impeller. By increasing the spacing of the face 7, it is possible to reduce the noise generated when the centrifugal blower is driven by smoothing the pulsation of pressure generated when the tip 4 of the impeller intersects the blocking face 7. The shape of the impeller with the noise-lowering collar 8 can be applied to the impeller of all centrifugal blowers.

상기와 같이 된 본 고안의 소음저하용 깃(8)을 갖는 소음저하용 원심송풍기 임펠러의 형상은 모든 원심송풍기의 임펠러에 적용할 수 있다.The shape of the noise reduction centrifugal blower impeller having the noise reduction feather 8 of the present invention as described above can be applied to the impellers of all centrifugal blowers.

Claims (1)

종래의 임펠러 깃(5) 사이에 길이가 짧은 소음저하용 깃(8)을 삽입함으로써 임펠러의 깃끝(4)과 차단면(7)의 간격을 증가시켜, 임펠러의 깃끝(4)이 차단면(7)과 교차할 때의 발생하는 압력의 맥동현상을 부드럽게 하여줌으로써 원심송풍기가 구동될 때 발생되는 소음을 감소시킬 수 있게 한 소음저하용 깃(8)을 갖는 임펠러의 형상으로써 모든 원심송풍기의 임펠러에 적용할 수 있게 한 것을 특징으로 한 소음저하용 원심송풍기 임펠러의 형상By inserting a short noise reduction feather 8 between the conventional impeller blades 5, the gap between the tip 4 of the impeller and the blocking surface 7 is increased, so that the blade tip 4 of the impeller has a blocking surface ( 7) Impellers of all centrifugal blowers as a shape of an impeller with a noise reducing collar (8) that makes it possible to reduce the noise generated when the centrifugal blower is driven by smoothing the pulsation of the pressure generated when it intersects with 7). Shape of centrifugal blower impeller for noise reduction, characterized by being applicable to
KR2019970015343U 1997-06-23 1997-06-23 Shape of Centrifugal Blower Impeller for Noise Reduction KR19990001853U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR2019970015343U KR19990001853U (en) 1997-06-23 1997-06-23 Shape of Centrifugal Blower Impeller for Noise Reduction
KR2019990016275U KR200173233Y1 (en) 1997-06-23 1999-08-10 Impeller structure of centrifugal fan for reducing noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019970015343U KR19990001853U (en) 1997-06-23 1997-06-23 Shape of Centrifugal Blower Impeller for Noise Reduction

Related Child Applications (1)

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KR2019990016275U Division KR200173233Y1 (en) 1997-06-23 1999-08-10 Impeller structure of centrifugal fan for reducing noise

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KR19990001853U true KR19990001853U (en) 1999-01-15

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KR2019970015343U KR19990001853U (en) 1997-06-23 1997-06-23 Shape of Centrifugal Blower Impeller for Noise Reduction
KR2019990016275U KR200173233Y1 (en) 1997-06-23 1999-08-10 Impeller structure of centrifugal fan for reducing noise

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KR2019990016275U KR200173233Y1 (en) 1997-06-23 1999-08-10 Impeller structure of centrifugal fan for reducing noise

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102558158B1 (en) * 2021-07-06 2023-07-20 소애연 Centrifugal impeller with partially opened shroud
KR102428874B1 (en) * 2021-12-01 2022-08-03 (주)그린텍 impeller for volute pump with double-suction

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