KR20040084411A - Fan - Google Patents

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Publication number
KR20040084411A
KR20040084411A KR1020030019470A KR20030019470A KR20040084411A KR 20040084411 A KR20040084411 A KR 20040084411A KR 1020030019470 A KR1020030019470 A KR 1020030019470A KR 20030019470 A KR20030019470 A KR 20030019470A KR 20040084411 A KR20040084411 A KR 20040084411A
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KR
South Korea
Prior art keywords
blowing
fan
balancing
blower
shroud
Prior art date
Application number
KR1020030019470A
Other languages
Korean (ko)
Other versions
KR100567218B1 (en
Inventor
정상규
주재만
이승배
Original Assignee
삼성전자주식회사
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.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020030019470A priority Critical patent/KR100567218B1/en
Priority to CN200310120179.6A priority patent/CN1288349C/en
Priority to EP03258179A priority patent/EP1462657B1/en
Priority to DE60311768T priority patent/DE60311768T2/en
Priority to US10/747,175 priority patent/US7025570B2/en
Publication of KR20040084411A publication Critical patent/KR20040084411A/en
Application granted granted Critical
Publication of KR100567218B1 publication Critical patent/KR100567218B1/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
    • F04D29/662—Balancing of rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially 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
    • F04D29/66—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
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations

Abstract

PURPOSE: A blowing fan is provided to improve a vibration characteristic of a blowing fan when the blowing fan is driven by removing a part of balancing protrusions of the blowing fan. CONSTITUTION: A blowing fan(10) includes a boss having a cylindrical shape and a plurality of blades(12). A driving motor is installed at a rear portion of the boss. The blades(12) are integrally formed with an outer peripheral portion of the boss. A shroud(13) is provided in order to connect ends of the blades to each other. The shroud(13) guides air flowing from a rear portion to a front portion by means of the blades(12). Plural balancing protrusions(15) is formed at an outer portion of the shroud(13) in order to improve the vibration characteristic of the blowing fan(10).

Description

송풍팬{FAN}Blower fan {FAN}

본 발명은 송풍팬에 관한 것으로 더욱 상세하게는 진동 특성을 용이하게 개선할 수 있는 송풍팬에 관한 것이다.The present invention relates to a blowing fan, and more particularly to a blowing fan that can easily improve the vibration characteristics.

일반적으로 송풍팬은 구동모터 등으로부터 회전력을 전달받아 회전하며 공기등의 기체가 유동하도록 송풍력을 발생시키는 것으로, 다수의 송풍날개를 구비하여 송풍날개의 회전에 의해 공기가 유동하게 함으로써 송풍력을 발생시킬 수 있게 되어 있다.In general, the blowing fan rotates by receiving a rotational force from a driving motor, and generates a blowing force to allow gas such as air to flow. The blowing fan is provided with a plurality of blowing wings to allow air to flow by rotating the blowing blades. It is possible to generate.

그런데 이러한 송풍팬은 설계에 따라 동일한 형상으로 제조되었을 경우에도 그 재질이나 크기에 따라 진동 특성이 변하므로 이러한 송풍팬을 실제로 구동모터에 설치하여 회전시키면 이상 진동 및 그에 따른 소음이 발생한다는 문제점이 있다.However, even when the blower fan is manufactured in the same shape according to the design, the vibration characteristics are changed according to the material or size thereof. Therefore, when the blower fan is actually installed and rotated in the driving motor, abnormal vibration and noise are generated. .

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 회전에 따른 진동 특성을 용이하게 개선할 수 있는 송풍팬을 제공하는 것이다.The present invention is to solve such a problem, it is an object of the present invention to provide a blowing fan that can easily improve the vibration characteristics of the rotation.

도 1은 본 발명에 따른 송풍팬이 도시된 사시도이다.1 is a perspective view showing a blowing fan according to the present invention.

도 2는 본 발명에 따른 송풍팬에 있어서 일부 밸런싱 돌기가 제거된 상태를 보인 사시도이다.Figure 2 is a perspective view showing a state in which some balancing projection is removed in the blowing fan according to the present invention.

도 3는 본 발명의 다른 실시예에 따른 송풍팬의 사시도이다.3 is a perspective view of a blowing fan according to another embodiment of the present invention.

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

10: 축류팬 11: 보스10: Axial Fan 11: Boss

12, 22: 송풍날개 13: 축류팬 시라우드12, 22: Ventilation wing 13: Axial fan shroud

14: 밸런싱 부재 15, 24: 밸런싱 돌기14: balancing member 15, 24: balancing protrusion

20: 원심팬 21: 회전판20: centrifugal fan 21: rotating plate

21a: 허브 23: 원심팬 시라우드21a: hub 23 centrifugal fan shroud

이와 같은 목적을 달성하기 위한 본 발명에 따른 송풍팬은, 회전하며 송풍력을 발생시키되 그 회전방향으로 진동 특성 개선을 위한 다수의 밸런싱 돌기가 서로 일정 간격을 이루도록 실질적으로 환상으로 배치되어 있다.Blowing fan according to the present invention for achieving the above object is arranged in a substantially annular rotation so as to generate a blowing force, but a plurality of balancing projections for improving the vibration characteristics in the rotational direction at regular intervals.

또한, 상기 송풍팬은 회전력을 발생시키는 구동모터로부터 동력이 전달되는 보스와, 상기 보스의 외주면에 형성되어 송풍력을 발생시키는 다수의 송풍날개와, 실질적으로 링형상으로 형성되어 상기 송풍날개의 외측 끝단을 서로 연결하며 상기 밸런싱 돌기가 배치되는 밸런싱 부재를 포함한다.The blower fan may include a boss through which power is transmitted from a driving motor generating a rotational force, a plurality of blower wings formed on an outer circumferential surface of the boss to generate a blowing force, and formed substantially in a ring shape to the outside of the blower blade. And a balancing member on which the ends are connected to each other and the balancing protrusion is disposed.

또한, 상기 송풍팬은 상기 다수의 송풍날개들의 끝단을 서로 연결하며 상기 송풍날개의 의해 유동하는 기체를 안내하는 축류팬 시라우드를 구비하며, 상기 밸런싱 부재는 상기 축류팬 시라우드의 외주면에 일체로 성형된다.In addition, the blowing fan has an axial fan shroud that connects the ends of the plurality of blowing wings to each other and guides the gas flowing by the blowing blades, the balancing member is integrally formed on the outer peripheral surface of the axial fan shroud Molded.

또한, 상기 송풍팬은 그 중심이 회전력을 발생시키는 구동모터에 결합되는 회전판과, 상기 회전판에 일단이 고정되되 방사상으로 배열되어 송풍력을 발생시키는 다수의 송풍날개와, 실질적으로 링형상으로 형성되어 상기 다수의 송풍날개 타단에 고정되는 원심팬 시리우드를 구비하며, 상기 다수의 밸런싱 돌기는 상기 원심팬 시라우드에 환상으로 배치된다.In addition, the blower fan has a rotary plate coupled to a driving motor for generating a rotational force at its center, and a plurality of blower vanes having one end fixed to the rotating plate and arranged radially to generate a blowing force, and substantially formed in a ring shape. And a plurality of centrifugal fan shrouds fixed to the other ends of the plurality of blowing vanes, and the plurality of balancing protrusions are annularly disposed on the centrifugal fan shrouds.

이하에서는 본 발명의 바람직한 하나의 실시예를 도면을 참조하여 상세히 설명한다.Hereinafter, one preferred embodiment of the present invention will be described in detail with reference to the drawings.

본 실시예에서는 송풍팬으로써 축류팬이 예로써 제시되어 있다.In this embodiment, an axial fan is shown as an example of the blowing fan.

본 발명에 따른 축류팬(10)은 도 1에 도시되어 있는 바와 같이 원통형상으로 형성되며 후단측에 구동모터(미도시)가 설치되는 보스(11)와, 보스(11)의 외주면에 일체로 마련되어 회전하며 기체가 후방측으로부터 흡입되어 전방측으로 송풍되게 하는 다수의 송풍날개(12)가 구비된다.The axial flow fan 10 according to the present invention is formed in a cylindrical shape as shown in Figure 1 and the boss 11 is installed integrally to the outer peripheral surface of the boss 11 and the drive motor (not shown) is installed on the rear end side It is provided with a plurality of blowing blades 12 to rotate and the gas is sucked from the rear side to blow to the front side.

또한, 축류팬(10)에는 링 형상으로 형성되어 다수의 송풍날개(12) 끝단을 서로 연결하는 축류팬 시라우드(13)가 구비된다. 축류팬 시라우드(13)는 송풍날개(12)에 의해 후방측으로부터 전방측으로 유동하는 기체를 안내하여 기체가 직진성을 갖고 송풍되도록 하는 것으로, 송풍날개(12)의 끝단을 지지함으로써 장시간 사용에도 송풍날개(12)의 형상이 일정하게 유지될 수 있게 하는 부수적인 효과도 얻을 수 있다.In addition, the axial fan 10 is formed in a ring shape is provided with an axial fan shroud 13 to connect the ends of the plurality of blowing wings 12 to each other. The axial fan shroud 13 guides the gas flowing from the rear side to the front side by the blowing blades 12 so that the gas is blown with straightness. The axial fan shroud 13 supports the end of the blowing blades 12 to blow even for long time use. Ancillary effects can also be obtained in which the shape of the blade 12 can be kept constant.

또한 본 발명에 따른 축류팬(10)에는 이러한 축류팬 시라우드(13)의 외측에축류팬(10)의 진동특성을 개선하기 위한 밸런싱 돌기(15)가 형성되어 있다. 밸런싱 돌기(15)는 금형을 통해 축류팬(10)과 일체로 성형되는 것으로 축류팬(10)의 회전방향으로 다수개가 실질적으로 환형상을 이루게 배치되되 서로 일정 간격 이격되게 배치된다.In addition, in the axial fan 10 according to the present invention, a balancing protrusion 15 for improving the vibration characteristics of the axial fan 10 is formed outside the axial fan shroud 13. The balancing protrusion 15 is formed integrally with the axial fan 10 through a mold, and is arranged to form a substantially annular shape in a rotational direction of the axial fan 10 but spaced apart from each other at regular intervals.

축류팬(10)에는 이러한 밸런싱 돌기(15)가 배치되는 밸런싱 부재(14)가 마련되는데, 밸런싱 부재(14)는 밸런싱 돌기(15)에 의해 축류팬 시라우드(13) 외측의 기체 유동이 혼잡해 지는 것을 방지하기 위한 것으로, 축류팬 시라우드(13)의 외주면에 일체로 성형되며 축류팬 시라우드(13)의 원주방향으로 연장되어 축류팬 시라우드(13)와 마찬가지로 링형상을 갖도록 형성되되 밸런싱 돌기(15)를 축류팬(10)의 반경방향 외측에서 덮을 수 있도록 끝단이 절곡되어 있다.The axial fan 10 is provided with a balancing member 14 in which such balancing protrusions 15 are arranged, and the balancing member 14 is congested by gas balancing outside the axial fan shroud 13 by the balancing protrusions 15. It is to prevent it from being formed, integrally formed on the outer circumferential surface of the axial fan shroud 13 and extending in the circumferential direction of the axial fan shroud 13 so as to have a ring shape like the axial fan shroud 13. The end is bent so that the balancing protrusion 15 can be covered on the radially outer side of the axial fan 10.

그러므로, 축류팬(10)의 진동이 적정 수준 이상일 경우, 밸런싱 부재(14)에 마련된 밸런싱 돌기(15)를 하나씩 제거하여 축류팬(10)의 진동특성을 변경시킴으로써, 진동이 적정 수준이하가 되도록 조정하여 개선할 수 있게 된다.Therefore, when the vibration of the axial fan 10 is above the appropriate level, by removing the balancing protrusions 15 provided on the balancing member 14 one by one to change the vibration characteristics of the axial fan 10, so that the vibration is below the appropriate level. Can be adjusted to improve.

또한, 제거된 밸런싱 돌기(15)의 위치를 확인하여 축류팬(10)의 제조에 사용된 금형에서 제거된 밸런싱 돌기(15)의 제조를 위해 마련되어 있는 홈을 막음으로써 실질적으로 동일한 진동특성을 갖는 다수의 축류팬(10)을 다수 제조할 수 있게 된다.In addition, by checking the position of the removed balancing protrusion 15 to prevent the groove provided for the manufacture of the balancing protrusion 15 removed from the mold used in the manufacture of the axial fan 10, it has substantially the same vibration characteristics. It is possible to manufacture a plurality of axial fan 10.

본 실시예에서 밸런싱 부재(14)는 축류팬 시라우드(13) 외측에 형성되어 있으나, 이에 한정하지 않고 축류팬 시라우드 없이 밸런싱 부재만이 송풍날개(12)의 외측에 형성되도록 하는 구성도 가능하다.In this embodiment, the balancing member 14 is formed on the outside of the axial fan shroud 13, but is not limited to this configuration may be configured so that only the balancing member without the axial fan shroud is formed on the outside of the blower blade (12). Do.

다음은 이와 같이 구성된 본 발명에 따른 축류팬 조립체의 동작 및 작용효과를 설명한다.The following describes the operation and effect of the axial fan assembly according to the present invention configured as described above.

먼저, 축류팬(10)의 보스(11)에 구동모터(미도시)를 결합하여 회전시키며 축류팬(10)의 진동특성을 체크한다. 이 때 발생되는 진동이 적정 수준 이상일 경우, 진동이 적정 수준 이하가 될 때까지 도 2에 도시되어 있는 바와 같이 축류팬(10)에 마련된 밸런싱 돌기(15)를 하나씩 제거하며 반복적으로 축류팬(10)의 진동특성을 체크하여, 진동이 적정 수준 이하가 되도록 축류팬(10)을 조정한다. 따라서 밸런싱 돌기(15)를 순차적으로 제거함으로써 축류팬(10)의 진동 특성은 용이하게 개선된다.First, the driving motor (not shown) is coupled to the boss 11 of the axial fan 10 to rotate, and the vibration characteristic of the axial fan 10 is checked. If the vibration generated at this time is more than the appropriate level, as shown in Figure 2 until the vibration is below the appropriate level, the balancing projection 15 provided in the axial fan 10 is removed one by one and repeatedly the axial fan 10 Check the vibration characteristics of the), and adjust the axial flow fan 10 so that the vibration is below an appropriate level. Therefore, by sequentially removing the balancing protrusion 15, the vibration characteristics of the axial fan 10 is easily improved.

상기의 실시예에서는 밸런싱 돌기(15)가 축류팬(10)에 적용되어 있는 경우를 예로써 설명하였으나 이에 한정하지 않고, 다른 실시예로써 도 3에 도시되어 있는 바와 같이 원심팬(20)에 적용하는 것도 가능하다.In the above embodiment, a case in which the balancing protrusion 15 is applied to the axial fan 10 has been described as an example, but is not limited thereto. In another embodiment, the balancing protrusion 15 is applied to the centrifugal fan 20 as shown in FIG. 3. It is also possible.

본 발명의 다른 실시예에 따른 원심팬(20)은 회전력을 발생시키는 구동모터(미도시)가 결합되는 허브(21a)가 일체로 성형된 회전판(21)과, 회전판(21)의 전면 외주면에 일단이 고정되되 회전판(21)에 방사상으로 배치되는 다수의 송풍날개(22)와, 다수의 송풍날개(22) 타단을 지지함과 동시에 공기의 흐름을 안내하는 링형상의 원심팬 시라우드(23)를 구비한다.The centrifugal fan 20 according to another embodiment of the present invention has a rotating plate 21 in which a hub 21a to which a driving motor (not shown) for generating a rotating force is coupled is integrally formed, and a front outer circumferential surface of the rotating plate 21. One end is fixed, but the plurality of blowing blades 22 are arranged radially on the rotating plate 21, the plurality of blowing blades 22 and the other end of the ring-shaped centrifugal fan shroud 23 to guide the flow of air at the same time ).

본 발명에 따라 원심팬(20)에는 다수의 밸런싱 돌기(24)가 환형으로 배치되는데, 본 실시예에서는 도시되어 있는 바와 같이 원심팬 시라우드(23)의 전방측에 서로 일정 간격 이격되도록 배치된다.According to the present invention, the centrifugal fan 20 has a plurality of balancing protrusions 24 arranged in an annular shape. In this embodiment, the centrifugal fan 20 is arranged to be spaced apart from each other at the front side of the centrifugal fan shroud 23 as shown. .

따라서, 원심팬(20)일 경우에도 적정 수준 이상의 진동이 발생하면 밸런싱 돌기(24)를 하나씩 제거하며 진동이 적정 수준 이하가 되도록 조정할 수 있다.Therefore, even in the case of the centrifugal fan 20, if the vibration occurs more than the appropriate level, the balancing protrusions 24 are removed one by one and the vibration can be adjusted to be below the appropriate level.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 송풍팬은 다수의 밸런싱 돌기 중 일부를 제거함으로써 송풍팬의 진동 특성을 용이하게 개선할 수 있게 되는 작용효과가 있다.As described in detail above, the blowing fan according to the present invention has an effect of being able to easily improve the vibration characteristics of the blowing fan by removing some of the plurality of balancing protrusions.

Claims (4)

회전하며 송풍력을 발생시키되 그 회전방향으로 진동 특성 개선을 위한 다수의 밸런싱 돌기가 서로 일정 간격을 이루도록 실질적으로 환상으로 배치되어 있는 것을 특징으로 하는 송풍팬.Blowing fan, characterized in that arranged in a substantially annular so as to generate a blowing force, but a plurality of balancing projections for improving the vibration characteristics in the rotational direction at a predetermined interval from each other. 제 1항에 있어서,The method of claim 1, 상기 송풍팬은 회전력을 발생시키는 구동모터로부터 동력이 전달되는 보스와, 상기 보스의 외주면에 형성되어 송풍력을 발생시키는 다수의 송풍날개와, 실질적으로 링형상으로 형성되어 상기 송풍날개의 외측 끝단을 서로 연결하며 상기 밸런싱 돌기가 배치되는 밸런싱 부재를 포함하는 것을 특징으로 하는 송풍팬.The blower fan has a boss to which power is transmitted from a driving motor generating a rotational force, a plurality of blower wings formed on an outer circumferential surface of the boss to generate a blow force, and are formed in a substantially ring shape to form an outer end of the blower blade. A blowing fan, comprising: a balancing member connected to each other and the balancing protrusion is disposed. 제 2항에 있어서,The method of claim 2, 상기 송풍팬은 상기 다수의 송풍날개들의 끝단을 서로 연결하며 상기 송풍날개의 의해 유동하는 기체를 안내하는 축류팬 시라우드를 구비하며,The blowing fan has an axial fan shroud that connects the ends of the plurality of blowing wings to each other and guides the gas flowing by the blowing blades, 상기 밸런싱 부재는 상기 축류팬 시라우드의 외주면에 일체로 성형되는 것을 특징으로 하는 송풍팬.And said balancing member is integrally formed on an outer circumferential surface of said axial fan shroud. 제 1항에 있어서,The method of claim 1, 상기 송풍팬은 그 중심이 회전력을 발생시키는 구동모터에 결합되는 회전판과, 상기 회전판에 일단이 고정되되 방사상으로 배열되어 송풍력을 발생시키는 다수의 송풍날개와, 실질적으로 링형상으로 형성되어 상기 다수의 송풍날개 타단에 고정되는 원심팬 시리우드를 구비하며,The blower fan has a rotary plate coupled to a driving motor for generating a rotational force, a plurality of blower vanes fixed at one end to the rotary plate, and arranged radially to generate a blowing force, and substantially formed in a ring shape. Centrifugal fan is fixed to the other end of the blowing wing of the 상기 다수의 밸런싱 돌기는 상기 원심팬 시라우드에 환상으로 배치되는 것을 특징으로 하는 송풍팬.And said plurality of balancing protrusions are annularly disposed in said centrifugal fan shroud.
KR1020030019470A 2003-03-28 2003-03-28 Fan KR100567218B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020030019470A KR100567218B1 (en) 2003-03-28 2003-03-28 Fan
CN200310120179.6A CN1288349C (en) 2003-03-28 2003-12-10 Axial fan component element
EP03258179A EP1462657B1 (en) 2003-03-28 2003-12-23 Axial flow fan assembly
DE60311768T DE60311768T2 (en) 2003-03-28 2003-12-23 Axiallüftereinheit
US10/747,175 US7025570B2 (en) 2003-03-28 2003-12-30 Axial flow fan assembly

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11371530B2 (en) * 2019-10-08 2022-06-28 Delta Electronics, Inc. Fan and fan impeller thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11371530B2 (en) * 2019-10-08 2022-06-28 Delta Electronics, Inc. Fan and fan impeller thereof

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