TWM549827U - Vortex-free conduct type fan - Google Patents
Vortex-free conduct type fan Download PDFInfo
- Publication number
- TWM549827U TWM549827U TW106207327U TW106207327U TWM549827U TW M549827 U TWM549827 U TW M549827U TW 106207327 U TW106207327 U TW 106207327U TW 106207327 U TW106207327 U TW 106207327U TW M549827 U TWM549827 U TW M549827U
- Authority
- TW
- Taiwan
- Prior art keywords
- wheel
- vortex
- air inlet
- angle
- type fan
- Prior art date
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
新型係關於一種管道型風機,特別係關於一種無渦旋管道型風機。The new type relates to a duct type fan, in particular to a non-vortex duct type fan.
管道型風機為現今社會中應用廣泛的風機,其可應用於各種場合如 商辦大樓、醫院空調、連鎖超商及家用等,一般習知的管道型風機所採用之風機為斜流式或軸流式葉輪設計,風機出口為高速切線方向速度,氣流將直接與風管進行大角度摩擦,使氣流直接衝擊風管,而不是沿著風管平順的流動,使氣流容易散射、流場不均進而產生渦流,該渦流將與風管之管壁摩擦,造成損失,另外,氣流的中心亦將形成無風區,而無法有效的將氣流送至較遠處,再者,一般管道型風機於出口處為高風速之狀態,為動壓直接損耗而無法回收為靜壓;The ducted fan is a widely used fan in today's society. It can be applied to various occasions such as commercial buildings, hospital air conditioners, chain supermarkets and households. The fan used in conventional ducted fans is a diagonal flow or shaft. Flow impeller design, the fan outlet is at high speed tangential direction speed, the air flow will directly rub with the air duct at a large angle, so that the air flow directly impacts the air duct, instead of smooth flow along the air duct, so that the air flow is easy to scatter and the flow field is uneven. In turn, a vortex is generated, which will rub against the pipe wall of the air duct, causing loss. In addition, the center of the airflow will also form a windless zone, and the airflow cannot be effectively sent to a distant place. Further, the general duct type fan is at the exit. The state of high wind speed is that the dynamic pressure is directly lost and cannot be recovered as static pressure;
為克服前述目的,急需一種耗損低、效率良好且更容易克服系統阻抗之無渦漩管道型風機。In order to overcome the foregoing objectives, there is an urgent need for a non-vortexed duct type fan that is low in loss, efficient, and easier to overcome system impedance.
本新型提供一種無渦漩管道型風機,其主要目的係提供一種耗損 低、效率良好且更容易克服系統阻抗之無渦漩管道型風機。The present invention provides a non-vortexed duct type fan, the main object of which is to provide a non-vortexed duct type fan which is low in loss, efficient and easier to overcome system impedance.
為達前述目的,本新型提供一種無渦漩管道型風機,包括:To achieve the foregoing objectives, the present invention provides a non-vortexed duct type fan comprising:
一殼體,具有一入風口、一出風口及一容設空間,該容設空間與該入風口及該出風口連通,該殼體具有一內側壁,該內側壁係面對該容設空間,該殼體具有依序連接之一入口段、一本體段及一出口段,該入風口位於該入口段,該出風口位於該出口段,定義該殼體之本體段的直徑為第一徑長;a housing having an air inlet, an air outlet, and a receiving space, the receiving space being in communication with the air inlet and the air outlet, the housing having an inner side wall facing the receiving space The housing has an inlet section, a body section and an outlet section. The air inlet is located at the inlet section, and the air outlet is located at the outlet section, and the diameter of the body section defining the housing is the first diameter. long;
一馬達,固定裝設於該容設空間內,該馬達具有一馬達外殼及一驅動軸,該馬達供以提供旋轉之力量;a motor fixedly mounted in the receiving space, the motor having a motor housing and a driving shaft, the motor is provided to provide a rotating force;
一葉輪,具有一輪盤、一輪蓋及設於該輪盤與該輪蓋之間的複數葉片,該輪盤中央設有一軸孔,該軸孔與該驅動軸固定組接,使該馬達驅動該葉輪旋轉,該輪蓋具有一進風口,該進風口連通該殼體之該入風口,各該葉片之間形成一第一導流空間,定義各該葉片自該輪盤垂直延伸至該輪蓋之方向為一傾斜方向,該葉片沿著該傾斜方向之中點具有一葉片中點,該葉片中點延伸至該軸孔中心的距離為一半徑,定義二倍的半徑為一第二徑長,該第一徑長與第二徑長之比值大於1.25; 以及An impeller having a wheel disc, a wheel cover and a plurality of blades disposed between the wheel disc and the wheel cover, wherein a center of the wheel disc is provided with a shaft hole, and the shaft hole is fixedly coupled with the drive shaft, so that the motor drives the motor The impeller rotates, the wheel cover has an air inlet, the air inlet communicates with the air inlet of the casing, and a first guiding space is formed between the blades, and each of the blades extends from the wheel to the wheel cover The direction is an oblique direction, and the blade has a blade midpoint along a midpoint of the oblique direction, the midpoint of the blade extending to a center of the shaft hole is a radius, and the radius defined by the second is a second path length The ratio of the first path length to the second path length is greater than 1.25;
複數後導葉,設置於該內側壁及該馬達外殼之間,各該後導葉之間形成一第二導流空間,該第一導流空間與該第二導流空間連通。A plurality of rear guide vanes are disposed between the inner side wall and the motor casing, and a second flow guiding space is formed between each of the rear guide vanes, and the first flow guiding space is in communication with the second guiding flow space.
由前述可知,本新型主要藉由限定該殼體之直徑與葉片中點至軸孔中心之兩倍距離的比值為大於1.25,且配合該些後導葉之設計,進而讓葉輪輸出氣流之動壓藉由該後導葉導正為非渦漩氣流,並將動壓轉換為靜壓,提升風機之效率,並降低耗損。It can be seen from the foregoing that the present invention mainly allows the impeller to output airflow by limiting the ratio of the diameter of the casing to the double distance of the midpoint of the blade to the center of the shaft hole to be greater than 1.25, and matching the design of the rear guide vanes. The pressure is guided by the rear vane into a non-vortex flow, and the dynamic pressure is converted into a static pressure, which improves the efficiency of the fan and reduces the wear.
為使貴審查委員對本新型之目的、特徵及功效能夠有更進一步之瞭解與認識,以下茲請配合圖式簡單說明詳述如後: In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this new model, please follow the brief description of the following:
本新型提供一種無渦漩管道型風機,如圖1至圖7所示,包括:一殼體10,具有一入風口11、一出風口12及一容設空間13,該容設空間13與該入風口11及該出風口12連通,該殼體10具有一內側壁10A,該內側壁10A係面對該容設空間13,該殼體10具有依序連接之一入口段101、一本體段103及一出口段102,該入風口11位於該入口段101,該出風口12位於該出口段102,該本體段103之直徑大於該入口段101及該出口段102之直徑,定義該殼體10之本體段103的直徑為第一徑長L1;一馬達20,固定裝設於該容設空間13內,該馬達20具有一馬達外殼21及一驅動軸22,該馬達20供以提供旋轉之力量;一葉輪30,具有一輪盤31、一輪蓋32及設於該輪盤31與該輪蓋32之間的複數葉片33,該輪盤31具有一中心部31A及一傾斜部31B,該中心部31A係呈圓形之型態,該傾斜部31B係連接於該中心部31A之外周緣並傾斜一角度,該輪盤31於該傾斜部31B與該中心部31A連接之另一端具有一第一周緣311,該第一周緣311供導引氣流,該中心部31A中央設有一軸孔312, 該軸孔312與該驅動軸22固定組接,使該馬達20驅動該葉輪30旋轉,該輪蓋32之其中一端具有一第二周緣321,該第二周緣321圍繞出一進風口322,該進風口322連通該殼體10之該入風口11,該輪蓋32之另一端具有一第三周緣323,該些葉片33係呈放射狀排列的設於該輪盤31與該輪蓋32間,各該葉片33之間形成一第一導流空間33A,於本實施例中,該葉輪30可為透浦式葉輪或斜流式葉輪,較佳的,定義各該葉片33自該輪盤31垂直延伸至該輪蓋32延伸之方向為一傾斜方向X,該葉片33沿著該傾斜方向X之中點(即二分之一處),具有一葉片中點331,該葉片中點331延伸至該軸孔312之中心的距離為一半徑R,定義二倍的半徑R為一第二徑長L2,該第一徑長L1與第二徑長L2之比值大於1.25,較佳的,該第一徑長L1與第二徑長L2之比值介於1.25至2;以及 複數後導葉40,設置於該內側壁10A及該馬達外殼21之間,各該後導葉40之間形成一第二導流空間40A,該第一導流空間33A與該第二導流空間40A連通。 The present invention provides a non-vortexed duct type fan, as shown in FIG. 1 to FIG. 7 , comprising: a casing 10 having an air inlet 11 , an air outlet 12 and a receiving space 13 , the receiving space 13 and The air inlet 11 and the air outlet 12 are connected to each other. The housing 10 has an inner side wall 10A facing the receiving space 13. The housing 10 has an inlet section 101 and a body connected in sequence. a section 103 and an outlet section 102, the air inlet 11 is located in the inlet section 101, the air outlet 12 is located in the outlet section 102, and the diameter of the body section 103 is larger than the diameter of the inlet section 101 and the outlet section 102, and the shell is defined The main body section 103 of the body 10 has a diameter of a first diameter L1. A motor 20 is fixedly mounted in the accommodating space 13. The motor 20 has a motor housing 21 and a driving shaft 22, and the motor 20 is provided. a rotating wheel; an impeller 30 having a wheel 31, a wheel cover 32, and a plurality of blades 33 disposed between the wheel 31 and the wheel cover 32, the wheel 31 having a central portion 31A and an inclined portion 31B, The center portion 31A is in a circular shape, and the inclined portion 31B is connected to the outer periphery of the center portion 31A and is inclined. Angle to the wheel 31 31A 31B is connected to another end of the central portion of the inclined portion 311 having a first peripheral edge, the peripheral edge 311 for guiding the first stream, the central portion 31A is provided with a central axial hole 312, The shaft hole 312 is fixedly coupled to the driving shaft 22, so that the motor 20 drives the impeller 30 to rotate. One end of the wheel cover 32 has a second peripheral edge 321 , and the second peripheral edge 321 surrounds an air inlet 322 . The air inlet 322 communicates with the air inlet 11 of the casing 10. The other end of the wheel cover 32 has a third circumference 323. The blades 33 are radially arranged between the wheel 31 and the wheel cover 32. A first flow guiding space 33A is formed between the blades 33. In this embodiment, the impeller 30 can be a turbo impeller or a diagonal flow impeller. Preferably, each of the vanes 33 is defined from the roulette. 31 extends vertically to the direction in which the wheel cover 32 extends is an oblique direction X. The blade 33 has a blade midpoint 331 along the midpoint of the oblique direction X (ie, one-half), and the blade midpoint 331 The distance extending to the center of the shaft hole 312 is a radius R, and the radius R defined by the second is a second path length L2. The ratio of the first path length L1 to the second path length L2 is greater than 1.25. Preferably, The ratio of the first path length L1 to the second path length L2 is between 1.25 and 2; A plurality of rear guide vanes 40 are disposed between the inner side wall 10A and the motor casing 21, and a second flow guiding space 40A is formed between each of the rear guide vanes 40. The first guiding space 33A and the second guiding flow are formed. Space 40A is connected.
於較佳實施例中,如圖3、5至圖7所示,該中心部31A具有一連接外周緣31R,該連接外周緣31R係與該傾斜部31B連接,各該葉片33具有一入端332及一出端333,該入端332與該連接外周緣31R之間的夾角為一第一夾角θ1、該出端333與該第三周緣323之間具有一第二夾角θ2,該第一夾角θ1之角度介於10至35度,該第二夾角θ2之角度介於10至45度。 In the preferred embodiment, as shown in FIG. 3, FIG. 5 to FIG. 7, the central portion 31A has a connecting outer peripheral edge 31R, and the connecting outer peripheral edge 31R is connected to the inclined portion 31B, and each of the blades 33 has an inlet end. 332 and an output end 333, the angle between the end 332 and the outer peripheral edge 31R of the connection is a first angle θ 1 , and the second end 323 has a second angle θ 2 between the end 333 and the third end 323. The angle of the first angle θ 1 is between 10 and 35 degrees, and the angle of the second angle θ 2 is between 10 and 45 degrees.
以上為本新型無渦漩管道型風機之結構組態,而其使用方法及其功效詳述如後: The above is the structural configuration of the novel vortex-free duct type fan, and its use method and its function are detailed as follows:
本新型無渦漩管道型風機,主要係透過該馬達提供旋轉之動能進而帶動該葉輪旋轉,使氣流自該入風口11導入,透過該輪蓋32之進風口322流經第一導流空間33A,再流過各該第二導流空間40A,最後自該出風口12排出。The vortex-free duct type fan of the present invention mainly transmits the kinetic energy of the rotation through the motor to drive the impeller to rotate, so that the airflow is introduced from the air inlet 11 and flows through the first air guiding space 33A through the air inlet 322 of the wheel cover 32. Then, the second flow guiding space 40A flows again, and finally is discharged from the air outlet 12.
由前述可知,本新型主要藉由限定該殼體10之本體段103的直徑與葉片中點331至軸孔312中心之兩倍距離的比值為大於1.25,且配合該些後導葉40之設計,進而讓葉輪30輸出氣流之動壓藉由該後導葉40導正為非渦漩氣流,並將動壓轉換為靜壓,進而提升風機之效率,並降低耗損。As can be seen from the foregoing, the present invention mainly defines the ratio of the diameter of the body section 103 of the casing 10 to the twice the distance from the center point 331 of the blade to the center of the shaft hole 312, and is designed to match the design of the rear guide vanes 40. In turn, the dynamic pressure of the output airflow of the impeller 30 is guided by the rear vane 40 into a non-vortex flow, and the dynamic pressure is converted into a static pressure, thereby improving the efficiency of the fan and reducing the wear.
另外,值得一提的是,本創作之後導葉40最主要係讓氣流於脫離風機、進入管道前將氣流導正,並將動壓轉換成靜壓使用。In addition, it is worth mentioning that after the creation, the guide vanes 40 are mainly used to guide the airflow to the airflow before leaving the fan and before entering the pipeline, and convert the dynamic pressure into static pressure.
經過實際測試,本新型無渦漩管道型風機與習知管道型風機於高風速(3450rpm)時,於風機出口測得之風速分別為8.3m/s、6.4m/s、而於風機出口測得的風量分別為3.91cmm、3.02cmm;而本新型於於低風速(2400rpm)時風機出口測得之風速為5.6m/s,風量為2.64cmm,習知技術於低風速(3000rpm)時風機出口測得之風速為5.7m/s、風量為2.69cmm,詳見下表1;After actual testing, the wind speed measured at the fan outlet is 8.3m/s and 6.4m/s at the high wind speed (3450rpm) of the new non-vortex-type ducted fan and the conventional duct-type fan, respectively. The air volume obtained is 3.91cmm and 3.02cmm respectively; while the wind speed measured by the fan outlet is 5.6m/s and the air volume is 2.64cmm at low wind speed (2400rpm), the conventional technology is used at low wind speed (3000rpm). The measured wind speed at the exit is 5.7m/s and the air volume is 2.69cmm. See Table 1 below for details;
另外,本新型無渦漩管道型風機經實測後,與一般習知管道型風機相比,在獲得相同風量(2.6~2.7cmm)之前提下,本新型無渦漩管道型風機之轉速能夠少600rpm,意即,本新型無渦漩管道型風機能夠以較低的轉速取得相同之風量;且本新型之噪音聲功率與習知管道型風機相比亦減少4.8dB。 <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td><td> </td><td> 本新型 </td><td> 習知技術 </td></tr><tr><td> 高速 3450rpm </td><td> 出口風速 </td><td> 8.3m/s </td><td> 6.4m/s </td></tr><tr><td> 高速 3450rpm </td><td> 出口風量 </td><td> 3.91cmm </td><td> 3.02 cmm </td></tr><tr><td> 低速 3000rpm </td><td> 出口風速 </td><td> </td><td> 5.7/ms </td></tr><tr><td> 低速 3000rpm </td><td> 出口風量 </td><td> </td><td> 2.69cmm </td></tr><tr><td> 低速 2400rpm </td><td> 出口風速 </td><td> 5.6/ms </td><td> </td></tr><tr><td> 低速 2400rpm </td><td> 出口風量 </td><td> 2.64cmm </td><td> </td></tr></TBODY></TABLE>表1 In addition, after the actual measurement of the non-vortex-type ducted fan of the present invention, compared with the conventional conventional duct type fan, the speed of the novel non-vortex-type duct type fan can be reduced before the same air volume (2.6~2.7 cmm) is obtained. 600 rpm, that is, the novel vortex-free duct type fan can achieve the same air volume at a lower rotational speed; and the noise noise power of the present invention is also reduced by 4.8 dB compared with the conventional duct type fan. <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td><td> </td><td> This new type</td>< Td> conventional technology</td></tr><tr><td> high speed 3450rpm </td><td> exit wind speed</td><td> 8.3m/s </td><td> 6.4m /s </td></tr><tr><td> High speed 3450rpm </td><td> Outlet air volume</td><td> 3.91cmm </td><td> 3.02 cmm </td>< /tr><tr><td> Low Speed 3000rpm </td><td> Exit Wind Speed</td><td> </td><td> 5.7/ms </td></tr><tr><td > Low speed 3000rpm </td><td> Outlet air volume</td><td> </td><td> 2.69cmm </td></tr><tr><td> Low speed 2400rpm </td><td > Outlet wind speed</td><td> 5.6/ms </td><td> </td></tr><tr><td> Low speed 2400rpm </td><td> Outlet air volume</td>< Td> 2.64cmm </td><td> </td></tr></TBODY></TABLE> Table 1
10‧‧‧殼體 10‧‧‧shell
101‧‧‧入口段 101‧‧‧ entrance section
102‧‧‧出口段 102‧‧‧Exit section
103‧‧‧本體段 103‧‧‧ Body segment
10A‧‧‧內側壁 10A‧‧‧ inner side wall
11‧‧‧入風口 11‧‧‧Air inlet
12‧‧‧出風口 12‧‧‧air outlet
13‧‧‧容設空間 13‧‧‧ Included space
20‧‧‧馬達 20‧‧‧Motor
21‧‧‧馬達外殼 21‧‧‧Motor housing
22‧‧‧驅動軸 22‧‧‧Drive shaft
30‧‧‧葉輪 30‧‧‧ Impeller
31‧‧‧輪盤 31‧‧‧ Roulette
31A‧‧‧中心部 31A‧‧‧ Central Department
31B‧‧‧傾斜部 31B‧‧‧ inclined section
31R‧‧‧連接外周緣 31R‧‧‧Connecting the outer periphery
311‧‧‧第一周緣 311‧‧‧First Week
312‧‧‧軸孔 312‧‧‧ shaft hole
32‧‧‧輪蓋 32‧‧‧ wheel cover
321‧‧‧第二周緣 321‧‧‧second circumference
322‧‧‧進風口 322‧‧‧air inlet
323‧‧‧第三周緣 323‧‧‧ Third Week
33‧‧‧葉片 33‧‧‧ leaves
331‧‧‧葉片中點 331‧‧‧ blade midpoint
332‧‧‧入端 332‧‧‧Into the end
333‧‧‧出端 333‧‧‧Begin
33A‧‧‧第一導流空間 33A‧‧‧First Diversion Space
40‧‧‧後導葉 40‧‧‧ rear guide vanes
40A‧‧‧第二導流空間 40A‧‧‧Second diversion space
X‧‧‧傾斜方向 X‧‧‧ tilt direction
R‧‧‧半徑 R‧‧‧ Radius
L1‧‧‧第一徑長 L1‧‧‧First path length
L2‧‧‧第二徑長 L2‧‧‧Second long
θ1‧‧‧第一夾角 θ 1 ‧‧‧first angle
θ2‧‧‧第二夾角 θ 2 ‧‧‧second angle
圖1 為本新型無渦漩管道型風機之立體圖。Figure 1 is a perspective view of the novel vortex-free duct type fan.
圖2 為本新型無渦漩管道型風機之立體分解圖。Fig. 2 is an exploded perspective view of the novel vortex-free duct type fan.
圖3 為本新型無渦漩管道型風機之立體剖視圖。Figure 3 is a perspective cross-sectional view of the novel vortex-free duct type fan.
圖4 為本新型無渦漩管道型風機之剖視圖。 Figure 4 is a cross-sectional view of the novel vortex-free duct type fan.
圖5 為本新型無渦漩管道型風機之葉輪的局部剖視圖。 Figure 5 is a partial cross-sectional view of the impeller of the novel non-vortexed duct type fan.
圖6 為本新型無渦漩管道型風機之葉輪的側視圖。 Figure 6 is a side view of the impeller of the novel non-vortexed duct type fan.
圖7 為圖6之7-7剖視圖。Figure 7 is a cross-sectional view taken along line 7-7 of Figure 6.
10‧‧‧殼體 10‧‧‧shell
101‧‧‧入口段 101‧‧‧ entrance section
102‧‧‧出口段 102‧‧‧Exit section
103‧‧‧本體段 103‧‧‧ Body segment
10A‧‧‧內側壁 10A‧‧‧ inner side wall
11‧‧‧入風口 11‧‧‧Air inlet
12‧‧‧出風口 12‧‧‧air outlet
13‧‧‧容設空間 13‧‧‧ Included space
20‧‧‧馬達 20‧‧‧Motor
21‧‧‧馬達外殼 21‧‧‧Motor housing
22‧‧‧驅動軸 22‧‧‧Drive shaft
30‧‧‧葉輪 30‧‧‧ Impeller
31‧‧‧輪盤 31‧‧‧ Roulette
31A‧‧‧中心部 31A‧‧‧ Central Department
31B‧‧‧傾斜部 31B‧‧‧ inclined section
311‧‧‧第一周緣 311‧‧‧First Week
312‧‧‧軸孔 312‧‧‧ shaft hole
32‧‧‧輪蓋 32‧‧‧ wheel cover
321‧‧‧第二周緣 321‧‧‧second circumference
322‧‧‧進風口 322‧‧‧air inlet
323‧‧‧第三周緣 323‧‧‧ Third Week
33‧‧‧葉片 33‧‧‧ leaves
331‧‧‧葉片中點 331‧‧‧ blade midpoint
33A‧‧‧第一導流空間 33A‧‧‧First Diversion Space
40‧‧‧後導葉 40‧‧‧ rear guide vanes
40A‧‧‧第二導流空間 40A‧‧‧Second diversion space
X‧‧‧傾斜方向 X‧‧‧ tilt direction
R‧‧‧半徑 R‧‧‧ Radius
L1‧‧‧第一徑長 L1‧‧‧First path length
L2‧‧‧第二徑長 L2‧‧‧Second long
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW106207327U TWM549827U (en) | 2017-05-23 | 2017-05-23 | Vortex-free conduct type fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW106207327U TWM549827U (en) | 2017-05-23 | 2017-05-23 | Vortex-free conduct type fan |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM549827U true TWM549827U (en) | 2017-10-01 |
Family
ID=61012942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW106207327U TWM549827U (en) | 2017-05-23 | 2017-05-23 | Vortex-free conduct type fan |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM549827U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110285080A (en) * | 2019-07-23 | 2019-09-27 | 中山大洋电机股份有限公司 | A kind of axial gas booster fan and its fuel cell of application |
-
2017
- 2017-05-23 TW TW106207327U patent/TWM549827U/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110285080A (en) * | 2019-07-23 | 2019-09-27 | 中山大洋电机股份有限公司 | A kind of axial gas booster fan and its fuel cell of application |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20050186070A1 (en) | Fan assembly and method | |
CN108252949A (en) | Mixed flow wind wheel and flow-mixing blower fan | |
JP5522306B1 (en) | Centrifugal fan | |
US20080298959A1 (en) | Unit for treating air with controlled flow | |
TWI256441B (en) | Axial flow fan | |
CN107747565B (en) | Air duct component of cross flow wind wheel and tower fan | |
EP2035712A1 (en) | Centrifugal impeller | |
TWI633260B (en) | Non-vortex pipe type fan | |
TWM549827U (en) | Vortex-free conduct type fan | |
CN109595197A (en) | A kind of blower | |
JP2004506141A (en) | Centrifugal fan | |
CN105179275A (en) | Novel mixed flow pipeline fan | |
JP2013053533A (en) | Axial flow blower and air conditioner | |
JP2000314394A (en) | Blower | |
CN100406747C (en) | Air intake construction of axial flow fan | |
KR20130139023A (en) | Centrifugal blower | |
CN216111362U (en) | Volute type energy-saving fan | |
CN111911425B (en) | Centrifugal fan and air conditioner | |
JPH08312589A (en) | Structure of air blowing fan | |
CN112833047A (en) | Double-suction centrifugal impeller with guide vanes and fan | |
CN107339261B (en) | Strong-suction multi-wing centrifugal fan | |
WO2021103050A1 (en) | Fan and motor | |
JPH0932796A (en) | Blower | |
CN100353077C (en) | Air-out structure of axial-flow fan | |
CN220567396U (en) | Dehumidifier |