TWI661131B - Telecentric fan, forming mold and fluid conveying device - Google Patents
Telecentric fan, forming mold and fluid conveying device Download PDFInfo
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- TWI661131B TWI661131B TW106130190A TW106130190A TWI661131B TW I661131 B TWI661131 B TW I661131B TW 106130190 A TW106130190 A TW 106130190A TW 106130190 A TW106130190 A TW 106130190A TW I661131 B TWI661131 B TW I661131B
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- 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
- F04D29/30—Vanes
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- 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
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Abstract
遠心風扇(10),包含前側葉片體(21A)與後側葉片體(21B)。將自前側葉片體(21A)的負壓面上的任意部位至後側葉片體(21B)的正壓面之最短距離定義為翼間距離,將前側葉片體(21A)的最大厚度部分中的負壓面上的位置定義為最大厚度位置(P2),將最大厚度位置(P2)與前緣部(26)之間的範圍定義為內徑側負壓面(24A),將最大厚度位置(P2)與後緣部(27)之間的範圍定義為外徑側負壓面(24B),將前側葉片體(21A)的負壓面中的自前緣部至後緣部之長度定義為負壓面長度。內徑側負壓面中的翼間距離較最大厚度位置上的翼間距離長。外徑側負壓面之中、最大厚度位置與自最大厚度位置離開負壓面長度的一半以上長度的位置之間的範圍中的翼間距離大致為一定。能抑制流體自葉片體剝離,且提高性能及減少噪音。 The telecentric fan (10) includes a front blade body (21A) and a rear blade body (21B). The shortest distance from any part of the negative pressure surface of the front blade body (21A) to the positive pressure surface of the rear blade body (21B) is defined as the inter-wing distance, and the distance from the largest thickness portion of the front blade body (21A) is The position on the negative pressure surface is defined as the maximum thickness position (P2), the range between the maximum thickness position (P2) and the leading edge portion (26) is defined as the inner diameter side negative pressure surface (24A), and the maximum thickness position ( The range between P2) and trailing edge portion (27) is defined as the outer diameter side negative pressure surface (24B), and the length from the leading edge portion to the trailing edge portion of the negative pressure surface of the front blade body (21A) is defined as negative Pressing surface length. The inter-wing distance in the inner diameter side negative pressure surface is longer than the inter-wing distance at the position of the maximum thickness. Among the outer diameter side negative pressure surfaces, the inter-wing distance in a range between the maximum thickness position and a position separated from the maximum thickness position by more than half the length of the negative pressure surface is substantially constant. Can inhibit the fluid from peeling from the blade body, improve performance and reduce noise.
Description
本說明書所揭示的技術為關於遠心風扇、成型用模具及流體輸送裝置。本申請主張基於2017年4月10日所提出申請的日本專利申請即特願2017-077580號的優先權。該日本專利申請中記載的所有的記載內容,藉由參照而被援用於本說明書中。 The technology disclosed in this specification relates to a telecentric fan, a mold for molding, and a fluid transfer device. This application claims priority based on Japanese Patent Application No. 2017-077580 filed on April 10, 2017. All the descriptions described in this Japanese patent application are referred to this specification by reference.
存在有具有相同大小及相同形狀的複數個葉片體(翼),以等間隔且以相同姿勢被排列成直線狀或圓狀的情形。複數個葉片體以上述方式構成的態樣,被稱為翼列。在翼列中,大分類有減速翼列和增速翼列的這兩種。 A plurality of blade bodies (wings) having the same size and the same shape may be arranged in a straight or circular shape at equal intervals and in the same posture. The aspect in which the plurality of blade bodies are constituted in the above manner is called a wing row. In the wing train, there are two types of deceleration wing train and acceleration wing train.
參照圖34,所謂的減速翼列是使流體減速並使壓力上升者,於壓縮機、風扇、泵等中被採用。圖34所示的減速翼列中,複數個翼隔著間隔D排列。藉由流路的擴大,從速度WA減速至速度WB,動能有效地被恢復作為壓力(增壓作用)。若將轉向角設為θ,將翼列相對於流體的法線所夾的角度設為λ,則在減速翼列的增壓作用中,例如,WA>WB,λ>θ/2。 Referring to FIG. 34, a so-called deceleration wing is a person that decelerates a fluid and raises a pressure, and is used in a compressor, a fan, a pump, and the like. In the decelerating wing train shown in FIG. 34, a plurality of wings are arranged with an interval D therebetween. By expanding the flow path, the speed is decelerated from the speed WA to the speed WB, and the kinetic energy is effectively restored as pressure (boosting effect). If the steering angle is set to θ, and the angle between the wing row and the fluid normal is set to λ, in the supercharging effect of the deceleration wing row, for example, WA> WB, λ> θ / 2.
另一方面,參照圖35,所謂的增速翼列是使流體增速並使壓力下降者,於渦輪、風車等中被採用。圖35所示的增速翼列中,從速度WA增速至速度WB。在增速翼列的增速作用中,例如,WA<WB,λ<θ/2。在該等的翼列中,以下的式(1)的關係成立,而在壓力損失實質上不產生的情形下,壓力變化量由以下的式(2)來表示。 On the other hand, referring to FIG. 35, a so-called speed-up wing train is used to increase the speed of a fluid and reduce the pressure, and is used in turbines, windmills, and the like. In the speed increasing wing train shown in FIG. 35, the speed is increased from the speed WA to the speed WB. In the speed increasing effect of the speed increasing wing train, for example, WA <WB, λ <θ / 2. In such a wing train, the relationship of the following formula (1) is established, and when a pressure loss is not substantially generated, the pressure change amount is expressed by the following formula (2).
WB/WA=cosλ/cos(θ-λ)‧‧‧式(1) WB / WA = cosλ / cos (θ-λ) ‧‧‧Formula (1)
P2-P1=ρ(WA2-WB2)/2‧‧‧式(2) P2-P1 = ρ (WA 2 -WB 2 ) / 2‧‧‧Formula (2)
如下述專利文獻1、2所揭示,已知有遠心風扇。遠心風扇因其作動原 理而一般為減速翼列。具體而言,在遠心風扇中複數個葉片體以等間隔地排列成圓狀的方式設置。伴隨於風扇的旋轉,而自旋轉中心的附近流入流體,自風扇的外周流出流體。周方向的長度,隨著自旋轉中心的位置遠離(隨著直徑變大)而成比例地變長。在彼此相鄰的葉片體與葉片體之間(即翼間)形成的流路,隨著自風扇的中心朝向徑方向外側緩緩地變大。 As disclosed in the following Patent Documents 1 and 2, a telecentric fan is known. Telecentric fan due to its actuation Generally speaking, it is a deceleration wing. Specifically, in the telecentric fan, a plurality of blade bodies are arranged so as to be arranged in a circle at equal intervals. As the fan rotates, fluid flows in from the vicinity of the rotation center, and fluid flows from the outer periphery of the fan. The length in the circumferential direction becomes proportionally longer as the position of the spin center becomes farther away (as the diameter becomes larger). The flow path formed between the adjacent blade bodies and the blade bodies (that is, between the wings) gradually increases from the center of the fan toward the outside in the radial direction.
當流路擴大時,流通於流路內的流體的流速,與流路的擴大成反比例地減速(質量守恆定律)。因此,遠心風扇中的複數個葉片體,一般為減速翼列。作為遠心風扇的葉片體,於以往一般被使用的可列舉圓弧翼、平板翼、翼型等。將該等一般的葉片體使用作為翼列而成的遠心風扇,因上述的理由而均為減速翼列。 When the flow path is enlarged, the flow velocity of the fluid flowing in the flow path is decelerated in inverse proportion to the expansion of the flow path (the law of conservation of mass). Therefore, the plurality of blade bodies in the telecentric fan are generally deceleration wing rows. As a blade body of a telecentric fan, arc wing, flat wing, airfoil, etc. which are generally used conventionally are mentioned. Telecentric fans using such general blade bodies as wing rows are all reduction wing rows for the reasons described above.
專利文獻1:日本專利第5469635號公報 Patent Document 1: Japanese Patent No. 5469635
專利文獻2:日本特開2005-016315號公報 Patent Document 2: Japanese Patent Application Laid-Open No. 2005-016315
流過遠心風扇的翼間之流體的流速,隨著流體朝向徑方向外側而降低。流體所具備的動能,與流速降低的平方成比例地降低。當流體所具備的動能相對於作用在葉片體的負壓處於劣勢時,流體自葉片體剝離,作為葉片體的性能降低,並且噪音增大。遠心風扇中所採用的習知的葉片體,大多為具有主要以克服高壓損為目的的形狀或大小者,因此,存在有容易導致流體的剝離或噪音的增大的情況。 The velocity of the fluid flowing between the wings of the telecentric fan decreases as the fluid moves outward in the radial direction. The kinetic energy of the fluid decreases in proportion to the square of the decrease in flow velocity. When the kinetic energy possessed by the fluid is inferior to the negative pressure acting on the blade body, the fluid is peeled from the blade body, the performance as a blade body is reduced, and the noise is increased. Conventional blade bodies used in telecentric fans are mostly those having a shape or size mainly for overcoming high pressure loss. Therefore, there are cases in which fluid separation or noise increase easily.
本說明書揭示一種能夠藉由抑制流體自葉片體剝離而謀求性能提高及噪音減少的遠心風扇、該遠心風扇的製造中被使用的成型用模具及具備該遠心風扇的流體輸送裝置。 This specification discloses a telecentric fan capable of improving performance and reducing noise by suppressing the fluid from peeling from the blade body, a molding die used in the manufacture of the telecentric fan, and a fluid conveying device including the telecentric fan.
基於本說明書揭示的第一形態的遠心風扇,具備複數個葉片體, 該等複數個葉片體具有空氣流入的前緣部、和空氣流出的後緣部,且於周方向彼此隔著間隔設置;在複數個該葉片體之各個分別形成有翼面,該翼面在該前緣部與該後緣部之間延伸,且由該葉片體中的位於旋轉方向之側的正壓面、和該葉片體中的位於該旋轉方向之相反側的負壓面構成;複數個該葉片體包含前側葉片體與後側葉片體,該後側葉片體隔著該間隔而與該前側葉片體對向,並且相對於該前側葉片體位於旋轉方向之相反側;若將自該前側葉片體的負壓面上的任意部位至該後側葉片體的正壓面之最短距離定義為該部位中的翼間距離,該前側葉片體具有規定該前側葉片體之中的最大厚度的最大厚度部分,而將該最大厚度部分中的負壓面上的位置定義為最大厚度位置,將該前側葉片體的負壓面之中的該最大厚度位置與該前緣部之間的範圍定義為內徑側負壓面,將該前側葉片體的負壓面之中的該最大厚度位置與該後緣部之間的範圍定義為外徑側負壓面,將該前側葉片體的負壓面中的自該前緣部至該後緣部之長度定義為負壓面長度,則該內徑側負壓面中的該翼間距離較該最大厚度位置上的該翼間距離長,該外徑側負壓面之中、該最大厚度位置與自該最大厚度位置離開該負壓面長度的一半以上長度的位置之間的範圍中的該翼間距離大致為一定。 The telecentric fan based on the first form disclosed in this specification includes a plurality of blade bodies, The plurality of blade bodies have a leading edge portion through which air flows in and a trailing edge portion through which air flows out, and are arranged at intervals from each other in the circumferential direction; each of the plurality of blade bodies is formed with an airfoil surface, and the airfoil surface is The leading edge portion and the trailing edge portion extend between the positive pressure surface of the blade body on the side of the rotation direction and the negative pressure surface of the blade body on the opposite side of the rotation direction; The blade body includes a front blade body and a rear blade body. The rear blade body is opposed to the front blade body through the interval, and is located on the opposite side of the rotation direction with respect to the front blade body. The shortest distance from any part of the negative pressure surface of the front blade body to the positive pressure surface of the rear blade body is defined as the inter-wing distance in the part, and the front blade body has a maximum thickness that defines the maximum thickness of the front blade body. The maximum thickness portion, and the position on the negative pressure surface in the maximum thickness portion is defined as the maximum thickness position, and the range between the maximum thickness position and the leading edge portion in the negative pressure surface of the front blade body is defined For within The side negative pressure surface defines a range between the maximum thickness position and the trailing edge portion among the negative pressure surfaces of the front blade body as an outer diameter side negative pressure surface, and the negative pressure surface of the front blade body The length from the leading edge portion to the trailing edge portion is defined as the length of the negative pressure surface, then the distance between the wings in the negative pressure surface on the inner diameter side is longer than the distance between the wings at the maximum thickness position, and the outer diameter side Among the negative pressure surfaces, the inter-wing distance in a range between the maximum thickness position and a position separated from the maximum thickness position by more than half the length of the negative pressure surface is substantially constant.
基於本說明書揭示的第二形態的遠心風扇,具備複數個葉片體,該等複數個葉片體具有空氣流入的前緣部、和空氣流出的後緣部,且於周方向彼此隔著間隔設置;在複數個該葉片體之各個分別形成有翼面,該翼面在該前緣部與該後緣部之間延伸,且由該葉片體中的位於旋轉方向之側的正壓面、和該葉片體中的位於該旋轉方向之相反側的負壓面構成;複數個該葉片體之各個,具有包含該前緣部的內徑側葉片部、和位於該內徑側葉片部的徑方向外側且包含該後緣部的外徑側葉片部;該內徑側葉片部包含:最大厚度部分,其規定該內徑側葉片部之中的最大厚度;擴大部分, 其位於該前緣部與該最大厚度部分之間,隨著自該前緣部之側朝向徑方向外側而翼厚緩緩地變厚;以及縮小部分,其位於較該最大厚度部分更為徑方向外側,隨著自該最大厚度部分之側朝向徑方向外側而翼厚緩緩地變薄;該內徑側葉片部的負壓面及該內徑側葉片部的正壓面,均具有朝向旋轉方向之相反側彎曲成凸狀的表面形狀;該內徑側葉片部的負壓面的曲率,大於該內徑側葉片部的正壓面的曲率;該外徑側葉片部包含自該後緣部之側往徑方向內側以大致相同的翼厚延伸的板狀部;該板狀部的負壓面的曲率及該板狀部的正壓面的曲率,均小於該內徑側葉片部的負壓面的曲率。 The telecentric fan based on the second form disclosed in the present specification includes a plurality of blade bodies having a leading edge portion through which air flows in and a trailing edge portion through which air flows out, and are disposed at intervals from each other in the circumferential direction; An airfoil is formed on each of the plurality of blade bodies, the airfoil extends between the leading edge portion and the trailing edge portion, and is formed by a positive pressure surface of the blade body on the side of the rotation direction, and the The blade body is formed by a negative pressure surface on the opposite side of the rotation direction; each of the plurality of blade bodies has an inner diameter side blade portion including the leading edge portion, and a radially outer side of the inner diameter side blade portion. And includes an outer diameter side blade portion of the trailing edge portion; the inner diameter side blade portion includes: a maximum thickness portion that specifies a maximum thickness of the inner diameter side blade portion; an enlarged portion, It is located between the leading edge portion and the maximum thickness portion, and the wing thickness gradually becomes thicker as it goes from the side of the leading edge portion toward the outside in the radial direction; and the reduced portion is located larger than the maximum thickness portion. Outside the direction, the wing thickness gradually becomes thinner as it goes from the side with the largest thickness toward the outside in the radial direction; both the negative pressure surface of the inner diameter side blade portion and the positive pressure surface of the inner diameter side blade portion have a direction The curvature of the negative pressure surface of the inner diameter side blade portion is larger than the curvature of the positive pressure surface of the inner diameter side blade portion. The outer diameter side blade portion includes the rear surface. A plate-shaped portion extending from the side of the edge portion to the inside in the radial direction with approximately the same wing thickness; the curvature of the negative pressure surface of the plate-shaped portion and the curvature of the positive pressure surface of the plate-shaped portion are smaller than the inner-diameter side blade portion The curvature of the negative pressure surface.
在上述遠心風扇中,也可以:該內徑側葉片部的正壓面與該外徑側葉片部的正壓面彼此正切;該內徑側葉片部的負壓面與該外徑側葉片部的負壓面彼此正切。 In the above-mentioned telecentric fan, the positive pressure surface of the inner diameter side blade portion and the positive pressure surface of the outer diameter side blade portion may be tangent to each other; the negative pressure surface of the inner diameter side blade portion and the outer diameter side blade portion. The negative pressure surfaces are tangent to each other.
在上述遠心風扇中,也可以:該外徑側葉片部的最大厚度,小於該內徑側葉片部的最大厚度;該外徑側葉片部的彎度,小於該內徑側葉片部的彎度。 In the above-mentioned telecentric fan, the maximum thickness of the outer diameter side blade portion may be smaller than the maximum thickness of the inner diameter side blade portion, and the camber of the outer diameter side blade portion may be smaller than the camber of the inner diameter side blade portion.
在上述遠心風扇中,也可以:在該內徑側葉片部設有在相對於旋轉軸平行的方向延伸的貫通孔;該貫通孔形成為包含該最大厚度部分,或者分別在該最大厚度部分的徑方向內側與徑方向外側各形成一個。 In the above-mentioned telecentric fan, a through-hole extending in a direction parallel to the rotation axis may be provided in the inner-diameter side blade portion, and the through-hole may be formed to include the maximum thickness portion or the Each of the inside of the radial direction and the outside of the radial direction is formed.
在上述遠心風扇中,也可以:在從相對於該旋轉軸平行的方向觀察該內徑側葉片部之中的形成有該貫通孔的內周面時,該內周面呈現眉月形狀。 In the above-mentioned telecentric fan, the inner peripheral surface may have an eyebrow shape when the inner peripheral surface on which the through-hole is formed in the inner-diameter side blade portion is viewed from a direction parallel to the rotation axis.
在上述遠心風扇中,也可以:若將連結該前緣部與該後緣部的直線定義為翼弦線,將該翼弦線的長度設為C,將自該葉片體的負壓面起下垂 至該翼弦線的垂線的長度為最大的位置上的該垂線的長度設為t,將t/C之值定義為彎度比m,則複數個該葉片體之各個形成為該彎度比m為0.25以上。 In the above-mentioned telecentric fan, if a straight line connecting the leading edge portion and the trailing edge portion is defined as a chord line, the length of the chord line is set to C, and the length of Sagging The length of the vertical line at the position where the vertical line to the chord line is the largest is set as t, and the value of t / C is defined as the camber ratio m, then each of the plurality of blade bodies is formed as the camber ratio m as Above 0.25.
在上述遠心風扇中,也可以:複數個該葉片體構成為成為等速翼列。 In the above-mentioned telecentric fan, a plurality of the blade bodies may be configured to form a constant velocity wing.
上述遠心風扇也可以由樹脂形成。 The telecentric fan may be made of resin.
基於本說明書揭示的成型用模具,被使用於對基於本說明書揭示的上述遠心風扇進行成型。 The molding die disclosed in this specification is used for molding the telecentric fan described in this specification.
基於本說明書揭示的流體輸送裝置具備送風機,該送風機由基於本說明書揭示的上述遠心風扇、和與上述遠心風扇連結且使複數個該葉片體旋轉的驅動馬達構成。 The fluid conveying device disclosed in this specification includes a blower including the telecentric fan disclosed in this specification and a drive motor connected to the telecentric fan and rotating a plurality of the blade bodies.
根據具備有上述構成的遠心風扇,在旋轉方向相鄰的葉片體之間的流路,形成為隨著自遠心風扇之中心側朝向徑方向外側以大致一定的流路剖面積延伸,且流過在旋轉方向相鄰的葉片體之間的流體的流速,即便流體自遠心風扇之中心側往徑方向外側行進,也能夠始終為大致一定。即便流體往徑方向外側行進,也能夠抑制流速下降的情況,且也能夠抑制流體所具備的動能下降的情況。藉此,能夠使至流體所具備的動能相對於作用在葉片體的負壓處於劣勢為止的時間上及距離上的限度(margin)大幅地變長。也能夠抑制流體自葉片體剝離的情況,結果為,既能夠抑制作為葉片體的性能降低的情況,也能夠大幅地減輕因抑制剝離而產生噪音的情況。 According to the telecentric fan having the above-mentioned configuration, the flow path between the adjacent blade bodies in the rotation direction is formed so as to extend from the center side of the telecentric fan toward the outside in the radial direction with a substantially constant cross-sectional area of the flow path and flow through The flow velocity of the fluid between the blade bodies adjacent in the rotation direction can always be substantially constant even if the fluid travels from the center side of the telecentric fan to the outside in the radial direction. Even if the fluid travels outward in the radial direction, it is possible to suppress a decrease in the flow velocity and also to suppress a decrease in the kinetic energy of the fluid. Thereby, it is possible to greatly increase the time and distance margins until the kinetic energy of the fluid is inferior to the negative pressure acting on the blade body. It is also possible to suppress the peeling of the fluid from the blade body, and as a result, it is possible to suppress the degradation of the performance as the blade body, and it is possible to greatly reduce the occurrence of noise due to the suppression of peeling.
10、10A、10B、10C、10D、10E、10F、10S7a、10S1、10S5、10S9、10S7‧‧‧遠心風扇 10, 10A, 10B, 10C, 10D, 10E, 10F, 10S7a, 10S1, 10S5, 10S9, 10S7‧‧‧ Telecentric fans
12、13‧‧‧外周框 12, 13‧‧‧ peripheral frame
16‧‧‧軸套 16‧‧‧ shaft sleeve
21‧‧‧葉片體 21‧‧‧ blade body
21A‧‧‧前側葉片體 21A‧‧‧Front blade body
21B‧‧‧後側葉片體 21B‧‧‧ Rear blade body
21M‧‧‧內徑側葉片部 21M‧‧‧Inner diameter side blade part
21Ma‧‧‧最大厚度部分 21Ma‧‧‧Maximum thickness part
21Mb‧‧‧擴大部分 21Mb‧‧‧Expanded
21Mc‧‧‧縮小部分 21Mc‧‧‧Reduction
21N‧‧‧外徑側葉片部 21N‧‧‧Outer side blade part
21Np‧‧‧板狀部 21Np‧‧‧ Plate
23‧‧‧翼面 23‧‧‧ Wing
24、24A、24B、24M、24Np‧‧‧負壓面 24, 24A, 24B, 24M, 24Np‧‧‧ Negative pressure surface
24L‧‧‧長度 24L‧‧‧length
24R、25R‧‧‧線 24R, 25R‧‧‧line
25、25M、25Np‧‧‧正壓面 25, 25M, 25Np‧‧‧Positive pressure surface
26‧‧‧前緣部 26‧‧‧ leading edge
27‧‧‧後緣部 27‧‧‧ trailing edge
29、29A、29B‧‧‧貫通孔 29, 29A, 29B‧‧‧through holes
29C‧‧‧缺口 29C‧‧‧ gap
29C1、29C2‧‧‧部分 29C1, 29C2‧‧‧‧parts
101‧‧‧旋轉軸 101‧‧‧rotation axis
102、103、104、H‧‧‧箭頭 102, 103, 104, H‧‧‧ arrows
110‧‧‧成型用模具 110‧‧‧Forming mold
112‧‧‧可動側模具 112‧‧‧Movable side mold
114‧‧‧固定側模具 114‧‧‧Fixed side mould
116‧‧‧腔室 116‧‧‧ Chamber
120、150‧‧‧送風機 120, 150‧‧‧ blower
127、154‧‧‧吹出部 127, 154‧‧‧ blowing out
128、151‧‧‧驅動馬達 128, 151‧‧‧ drive motor
129、152‧‧‧殼罩 129, 152‧‧‧shell
129a、152a‧‧‧引導壁 129a, 152a‧‧‧Guide wall
130、153‧‧‧吸入部 130, 153‧‧‧ Inhalation Department
131、132‧‧‧空間 131, 132‧‧‧ space
140‧‧‧空氣清淨機 140‧‧‧Air Purifier
141‧‧‧濾網 141‧‧‧Filter
142‧‧‧吸入口 142‧‧‧Suction port
143‧‧‧吹出口 143‧‧‧blow outlet
144‧‧‧殼體 144‧‧‧shell
144a‧‧‧後壁 144a‧‧‧ rear wall
144b‧‧‧頂壁 144b‧‧‧Top wall
145‧‧‧通道 145‧‧‧channel
AS‧‧‧含玻璃纖維(樹脂) AS‧‧‧ with glass fiber (resin)
C‧‧‧翼弦長 C‧‧‧wing chord length
D‧‧‧間隔 D‧‧‧ interval
L1、L2、L3、L4、L5、L6‧‧‧翼間距離 L1, L2, L3, L4, L5, L6 ‧‧‧ Wing distance
LN1、LN2‧‧‧直線 LN1, LN2‧‧‧Straight
LN3‧‧‧翼弦線 LN3‧‧‧wing chord line
LN4、W1、W2‧‧‧垂線 LN4, W1, W2‧‧‧ vertical
P1、P3、P4、P5、P6‧‧‧部位 P1, P3, P4, P5, P6‧‧‧
P2‧‧‧部位(最大厚度位置) P2‧‧‧part (maximum thickness position)
P10、P11、P12‧‧‧點 P10, P11, P12‧‧‧ points
P13、P15‧‧‧位置 P13, P15‧‧‧Position
WA、WB‧‧‧速度 WA, WB‧‧‧Speed
h1、h3、h4、h5、h6‧‧‧翼厚 h1, h3, h4, h5, h6‧‧‧wing thickness
h2‧‧‧最大厚度 h2‧‧‧Maximum thickness
m‧‧‧彎度比 m‧‧‧ camber ratio
t、t1、t2‧‧‧彎度 t, t1, t2 ‧‧‧ camber
圖1為表示實施形態一中的遠心風扇10的立體圖。 FIG. 1 is a perspective view showing a telecentric fan 10 in the first embodiment.
圖2為表示實施形態一中的遠心風扇10的前視圖。 FIG. 2 is a front view showing the telecentric fan 10 in the first embodiment.
圖3為放大表示圖2中的III線所圍繞的區域的前視圖。 FIG. 3 is an enlarged front view showing a region surrounded by a line III in FIG. 2.
圖4為放大表示圖3中所示的遠心風扇10的一部分的前視圖。 FIG. 4 is an enlarged front view showing a part of the telecentric fan 10 shown in FIG. 3.
圖5為表示實施形態二中的遠心風扇10A的前視圖。 FIG. 5 is a front view showing a telecentric fan 10A in the second embodiment.
圖6為放大表示圖5中的VI線所圍繞的區域的前視圖。 FIG. 6 is an enlarged front view showing a region surrounded by a VI line in FIG. 5.
圖7為放大表示圖6中所示的遠心風扇10A的一部分(葉片體21)的前視圖。 FIG. 7 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10A shown in FIG.
圖8為表示實施形態三中的遠心風扇10B的立體圖。 FIG. 8 is a perspective view showing a telecentric fan 10B in the third embodiment.
圖9為放大表示圖8中所示的遠心風扇10B的一部分(葉片體21)的前視圖。 FIG. 9 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10B shown in FIG.
圖10為放大表示實施形態三的變形例中的遠心風扇10C的一部分(葉片體21)的前視圖。 FIG. 10 is an enlarged front view showing a part of the telecentric fan 10C (the blade body 21) in a modification of the third embodiment.
圖11為放大表示實施形態四中的遠心風扇10D的一部分(葉片體21)的前視圖。 Fig. 11 is an enlarged front view showing a part of the telecentric fan 10D (the blade body 21) in the fourth embodiment.
圖12為放大表示實施形態四的第1變形例中的遠心風扇10E的一部分(葉片體21)的前視圖。 FIG. 12 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10E in the first modification of the fourth embodiment.
圖13為放大表示實施形態四的第2變形例中的遠心風扇10F的一部分(葉片體21)的前視圖。 FIG. 13 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10F in the second modification of the fourth embodiment.
圖14為表示關於實施形態五中、在遠心風扇10的製造時所使用的成型用模具110的剖面圖。 FIG. 14 is a cross-sectional view showing a molding die 110 used in manufacturing the telecentric fan 10 in the fifth embodiment.
圖15為表示關於實施形態五中、使用有遠心風扇10的送風機120的剖面圖。 15 is a cross-sectional view showing a blower 120 using a telecentric fan 10 in the fifth embodiment.
圖16為表示沿著圖15中的XVI-XVI線上的送風機120的剖面形狀的剖面圖。 FIG. 16 is a cross-sectional view showing a cross-sectional shape of the blower 120 along the XVI-XVI line in FIG. 15.
圖17為表示關於實施形態五中、使用有遠心風扇10的空氣清淨機140的剖面圖。 FIG. 17 is a cross-sectional view showing an air cleaner 140 using a telecentric fan 10 in the fifth embodiment.
圖18為放大表示關於實驗例的遠心風扇的一部分(葉片體21)的前視圖。 FIG. 18 is an enlarged front view showing a part (blade body 21) of a telecentric fan according to an experimental example.
圖19為表示關於實驗例的實驗條件及實驗結果的表。 FIG. 19 is a table showing experimental conditions and experimental results of experimental examples.
圖20為放大表示關於實驗例1的遠心風扇10S1的一部分(葉片體21)的前視圖。 FIG. 20 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10S1 of Experimental Example 1. FIG.
圖21為放大表示關於實驗例5的遠心風扇10S5的一部分(葉片體21)的前視圖。 FIG. 21 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10S5 of Experimental Example 5. FIG.
圖22為放大表示關於實驗例9的遠心風扇10S9的一部分(葉片體21)的前視圖。 FIG. 22 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10S9 in Experimental Example 9. FIG.
圖23為表示作為關於實驗例的實驗結果,彎度比m與風量的關係的圖表。 FIG. 23 is a graph showing the relationship between the camber ratio m and the air flow rate as an experimental result of an experimental example.
圖24為表示作為關於實驗例的實驗結果,彎度比m與噪音的關係的圖表。 FIG. 24 is a graph showing the relationship between the camber ratio m and noise as an experimental result regarding an experimental example.
圖25為表示作為關於實驗例的實驗結果,彎度比m與消耗電力的關係的圖表。 FIG. 25 is a graph showing a relationship between the camber ratio m and power consumption as an experimental result regarding an experimental example.
圖26為表示作為關於實驗例的實驗結果,最大翼厚與風量的關係的圖表。 FIG. 26 is a graph showing the relationship between the maximum wing thickness and the air volume as an experimental result of an experimental example.
圖27為表示作為關於實驗例的實驗結果,最大翼厚與噪音的關係的圖表。 FIG. 27 is a graph showing a relationship between a maximum wing thickness and noise as an experimental result of an experimental example.
圖28為表示作為關於實驗例的實驗結果,最大翼厚與消耗電力的關係的圖表。 FIG. 28 is a graph showing the relationship between the maximum wing thickness and power consumption as an experimental result regarding an experimental example.
圖29為表示作為關於實驗例的實驗結果,翼厚比與風量的關係的圖表。 FIG. 29 is a graph showing a relationship between a wing thickness ratio and an air volume as an experimental result regarding an experimental example.
圖30為表示作為關於實驗例的實驗結果,翼厚比與噪音的關係的圖表。 FIG. 30 is a graph showing a relationship between a wing thickness ratio and noise as an experimental result regarding an experimental example.
圖31為表示作為關於實驗例的實驗結果,翼厚比與消耗電力的關係的圖表。 FIG. 31 is a graph showing a relationship between a wing thickness ratio and power consumption as an experimental result regarding an experimental example.
圖32為放大表示基於實驗例7的遠心風扇10S7的一部分(葉片體21)的前視圖。 FIG. 32 is an enlarged front view showing a part (blade body 21) of a telecentric fan 10S7 according to Experimental Example 7. FIG.
圖33為放大表示關於實驗例7的遠心風扇10S7a的一部分(葉片體21)的前視圖。 FIG. 33 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10S7a of Experimental Example 7. FIG.
圖34為表示構成為成為減速翼列的複數個葉片體的剖面圖。 FIG. 34 is a cross-sectional view showing a plurality of blade bodies configured as a reduction wing row.
圖35為表示構成為成為增速翼列的複數個葉片體的剖面圖。 35 is a cross-sectional view showing a plurality of blade bodies configured as a speed increasing wing.
針對實施形態,於以下一邊參照圖式一邊進行說明。有時會有對相同的零件及相當零件標記相同的參照符號而不反覆重複之說明的情形。 The embodiment will be described below with reference to the drawings. In some cases, the same parts and corresponding parts are marked with the same reference signs without repeated description.
參照圖1~圖4,針對實施形態一中的遠心風扇10進行說明。圖1及圖2分別為表示遠心風扇10的立體圖及前視圖。參照圖1及圖2,遠心風扇10具有複數個葉片體21。遠心風扇10作為整體具有大致圓筒形的外觀,且複數個葉片體21配置於該大致圓筒形的側面。遠心風扇10由樹脂一體形成,以假想的旋轉軸101為中心往箭頭103所示的方向旋轉。 A telecentric fan 10 according to the first embodiment will be described with reference to FIGS. 1 to 4. 1 and 2 are a perspective view and a front view showing a telecentric fan 10, respectively. 1 and 2, the telecentric fan 10 includes a plurality of blade bodies 21. The telecentric fan 10 has a generally cylindrical appearance as a whole, and a plurality of blade bodies 21 are arranged on the side of the substantially cylindrical shape. The telecentric fan 10 is integrally formed of a resin, and rotates in a direction indicated by an arrow 103 around a virtual rotation axis 101 as a center.
遠心風扇10藉由旋轉的複數個葉片體21將自內周側取入的空氣往外周側送出。遠心風扇10利用遠心力(離心力)將空氣自旋轉中心側往徑方向外側送出。遠心風扇10作為多翼式風扇(Sirocco fan)發揮功能,搭載於家庭用電器設備等,能夠以低雷諾茲數區域的旋轉數被使用。 The telecentric fan 10 sends the air taken in from the inner peripheral side to the outer peripheral side by a plurality of rotating blade bodies 21. The telecentric fan 10 uses air force (centrifugal force) to send air from the rotation center side to the outside in the radial direction. The telecentric fan 10 functions as a Sirocco fan, and is mounted on a household electrical appliance or the like, and can be used with a rotation number in a low Reynolds number region.
遠心風扇10進一步具有外周框12、13。外周框12、13形成為以旋轉軸101為中心的環狀延伸。外周框12、13在旋轉軸101的軸方向上隔著距離配置。在外周框13一體形成有用於將遠心風扇10連結於驅動馬達的軸套部16。軸套部16例如由橡膠製零件與金屬製零件構成,藉由嵌入成形而與外周框13一體化。 The telecentric fan 10 further includes outer frames 12 and 13. The outer peripheral frames 12 and 13 are formed in a ring shape extending around the rotation axis 101. The outer peripheral frames 12 and 13 are arranged at a distance in the axial direction of the rotation shaft 101. A hub portion 16 for connecting the telecentric fan 10 to the drive motor is integrally formed on the outer peripheral frame 13. The boss portion 16 is made of, for example, a rubber component and a metal component, and is integrated with the outer peripheral frame 13 by insert molding.
複數個葉片體21於以旋轉軸101為中心的周方向彼此隔有間隔地設置。複數個葉片體21在以旋轉軸101為中心的周方向上等間隔地配置,在旋轉軸101的軸方向的兩端由外周框12及外周框13支承。葉片體21立設於外周框13上,且形成為朝向外周框12沿旋轉軸101的軸方向延伸。 The plurality of blade bodies 21 are provided at intervals in the circumferential direction around the rotation axis 101. The plurality of blade bodies 21 are arranged at equal intervals in the circumferential direction around the rotation shaft 101, and are supported by the outer circumferential frame 12 and the outer circumferential frame 13 at both ends in the axial direction of the rotation shaft 101. The blade body 21 stands on the outer peripheral frame 13 and is formed to extend toward the outer peripheral frame 12 in the axial direction of the rotation axis 101.
圖3為放大表示圖2中的III線所圍繞的區域的前視圖,圖4為放大表示圖3中所示的遠心風扇10的一部分的前視圖。在圖3及圖4中,示出從相對於遠心風扇10的旋轉軸101(圖1、圖2)平行的方向觀察時的葉片體21的形狀。 FIG. 3 is a front view showing a region surrounded by a line III in FIG. 2 in an enlarged manner, and FIG. 4 is a front view showing a part of the telecentric fan 10 in FIG. 3 in an enlarged manner. 3 and 4 show the shape of the blade body 21 when viewed from a direction parallel to the rotation axis 101 (FIGS. 1 and 2) of the telecentric fan 10.
如圖3及圖4所示,複數個葉片體21具有彼此相同的形狀。複數個葉片體21之各個,形成為即便在旋轉軸101的軸方向上的任何位置切斷也具有相同的翼剖面形狀。 As shown in FIGS. 3 and 4, the plurality of blade bodies 21 have the same shape as each other. Each of the plurality of blade bodies 21 is formed to have the same wing cross-sectional shape even when cut at any position in the axial direction of the rotation shaft 101.
葉片體21具有位於葉片體21內周側的端部且於旋轉時空氣流入的前緣部26、及位於葉片體21外周側的端部且於旋轉時空氣流出的後緣部27。葉片體21形成為自前緣部26朝向後緣部27往以旋轉軸101為中心的周方向傾斜。葉片體21形成為自前緣部26朝向後緣部27往遠心風扇10的旋轉方向傾斜。 The blade body 21 has a leading edge portion 26 located at an end portion on the inner peripheral side of the blade body 21 and inflowing air during rotation, and a trailing edge portion 27 located at an end portion on the outer peripheral side of the blade body 21 and outflowing air during rotation. The blade body 21 is formed to be inclined from the leading edge portion 26 toward the trailing edge portion 27 in the circumferential direction around the rotation axis 101. The blade body 21 is formed to be inclined from the leading edge portion 26 toward the trailing edge portion 27 in the rotation direction of the telecentric fan 10.
在葉片體21形成有由正壓面25及負壓面24構成的翼面23。正壓面25在前緣部26與後緣部27之間延伸,位於葉片體21中的旋轉方向之側。負壓面24在前緣部26與後緣部27之間延伸,位於葉片體21中的旋轉方向之相反側(正壓面25的背側)。在遠心風扇10之旋轉時,伴隨於在翼面23上產生空氣流動(氣流),而產生在正壓面25相對較大、在負壓面24相對較小的壓力分布。 An airfoil surface 23 including a positive pressure surface 25 and a negative pressure surface 24 is formed on the blade body 21. The positive pressure surface 25 extends between the leading edge portion 26 and the trailing edge portion 27 and is located on the side in the rotation direction in the blade body 21. The negative pressure surface 24 extends between the leading edge portion 26 and the trailing edge portion 27, and is located on the opposite side (the back side of the positive pressure surface 25) in the rotation direction in the blade body 21. When the telecentric fan 10 rotates, accompanying the air flow (airflow) generated on the airfoil 23, a pressure distribution that is relatively large on the positive pressure surface 25 and relatively small on the negative pressure surface 24 is generated.
複數個葉片體21包含前側葉片體21A及後側葉片體21B。前側葉片體21A及後側葉片體21B具有彼此相同的形狀及大小。後側葉片體21B隔著間隔與前側葉片體21A對向,並且相對於前側葉片體21A位於旋轉方向(箭頭103)之相反側。 The plurality of blade bodies 21 include a front blade body 21A and a rear blade body 21B. The front blade body 21A and the rear blade body 21B have the same shape and size as each other. The rear blade body 21B is opposed to the front blade body 21A at an interval, and is located on the opposite side to the rotation direction (arrow 103) with respect to the front blade body 21A.
將從前側葉片體21A的負壓面24(圖4中的以虛線24R所圍繞的部分)上的任意部位至後側葉片體21B的正壓面25(圖4中的以虛線25R圍繞的部分)的最短距離,定義為該任意部位上的翼間距離。例如,在前側葉片體21A的負壓面24上的部位P1~P6,分別被規定翼間距離L1~L6。 From any position on the negative pressure surface 24 of the front blade body 21A (the portion surrounded by the dotted line 24R in FIG. 4) to the positive pressure surface 25 of the rear blade body 21B (the portion surrounded by the dotted line 25R in FIG. 4) ), The shortest distance, is defined as the inter-wing distance at this arbitrary location. For example, the portions P1 to P6 on the negative pressure surface 24 of the front blade body 21A are defined by the inter-wing distances L1 to L6, respectively.
前側葉片體21A具有規定前側葉片體21A之中的最大厚度之最大厚度部分(以箭頭H所示的部分)。所謂的最大厚度部分,是在負壓面24與正壓 面25之間描繪出與負壓面24及正壓面25內切的圓之中具有最大的大小的圓的情形下,規定該內切圓與負壓面24之交點及該內切圓與正壓面25之交點,以包含該等二個交點的方式規定最大厚度部分。部位P2相當於該最大厚度部分中的負壓面24上的位置(以下,稱為最大厚度位置P2)。 The front blade body 21A has a maximum thickness portion (a portion indicated by an arrow H) that specifies the maximum thickness of the front blade body 21A. The so-called maximum thickness part is on the negative pressure surface 24 and the positive pressure When a circle having the largest size among circles inscribed with the negative pressure surface 24 and the positive pressure surface 25 is drawn between the surfaces 25, the intersection point of the inscribed circle with the negative pressure surface 24 and the inscribed circle and The intersection of the positive pressure surface 25 defines the maximum thickness portion so as to include these two intersections. The portion P2 corresponds to a position on the negative pressure surface 24 in the maximum thickness portion (hereinafter, referred to as the maximum thickness position P2).
將前側葉片體21A的負壓面24之中的最大厚度位置P2與前緣部26之間的範圍定義為內徑側負壓面24A。將前側葉片體21A的負壓面24之中的最大厚度位置P2與後緣部27之間的範圍定義為外徑側負壓面24B。進一步地,前側葉片體21A的負壓面24中的自前緣部26至後緣部27的長度(圖4中的以虛線24R所圍繞的部分的長度)定義為負壓面長度24L。所謂的負壓面長度24L,是內徑側負壓面24A的長度與外徑側負壓面24B的長度之合計值。 The range between the maximum thickness position P2 and the leading edge portion 26 among the negative pressure surfaces 24 of the front blade body 21A is defined as the inner diameter side negative pressure surface 24A. The range between the maximum thickness position P2 and the trailing edge portion 27 among the negative pressure surfaces 24 of the front blade body 21A is defined as the outer diameter side negative pressure surface 24B. Further, the length from the leading edge portion 26 to the trailing edge portion 27 in the negative pressure surface 24 of the front blade body 21A (the length of a portion surrounded by a broken line 24R in FIG. 4) is defined as the negative pressure surface length 24L. The negative pressure surface length 24L is a total value of the length of the inner diameter side negative pressure surface 24A and the outer diameter side negative pressure surface 24B.
在本實施形態的遠心風扇10中,內徑側負壓面24A上的翼間距離構成為較最大厚度位置P2上的翼間距離L2長。最大厚度位置P2與前緣部26之間的任意部位P1上的翼間距離L1構成為較最大厚度位置P2上的翼間距離L2長。本實施形態中,構成為隨著自最大厚度位置P2接近前緣部26而翼間距離緩緩地變長。 In the telecentric fan 10 of this embodiment, the inter-wing distance on the inner-diameter-side negative pressure surface 24A is configured to be longer than the inter-wing distance L2 at the maximum thickness position P2. The inter-wing distance L1 at an arbitrary portion P1 between the maximum thickness position P2 and the leading edge portion 26 is configured to be longer than the inter-wing distance L2 at the maximum thickness position P2. In the present embodiment, the distance between wings is gradually increased as the distance from the maximum thickness position P2 approaches the leading edge portion 26.
外徑側負壓面24B之中、最大厚度位置P2與自最大厚度位置P2離開負壓面長度24L的一半以上長度的位置之間的範圍的翼間距離,構成為大致一定。所謂的大致一定,是指翼間距離包含在至少最大厚度位置P2上的翼間距離L2的±25%以內的範圍內,較佳為翼間距離包含在最大厚度位置P2上的翼間距離L2的±15%以內的範圍內,更佳為翼間距離包含在最大厚度位置P2上的翼間距離L2的±10%以內的範圍內。 Among the outer diameter side negative pressure surfaces 24B, the inter-wing distance in a range between the maximum thickness position P2 and a position separated from the maximum thickness position P2 by more than half the length of the negative pressure surface length 24L is substantially constant. The term "substantially constant" means that the distance between the wings is within ± 25% of the distance between the wings L2 at least at the maximum thickness position P2, and it is preferable that the distance between the wings includes the distance between wings 2 at the maximum thickness position P2 Within the range of within ± 15%, it is more preferable that the inter-wing distance is within the range of within ± 10% of the inter-wing distance L2 at the maximum thickness position P2.
在本實施形態的遠心風扇10中,最大厚度位置P2上的翼間距離L2、部位P3上的翼間距離L3、及部位P4上的翼間距離L4為相同值。在外徑側負 壓面24B之中的部位P4與部位P5之間的範圍,隨著自部位P4接近部位P5而翼間距離緩緩地變短。部位P5上的翼間距離L5、及部位P6上的翼間距離L6為相同值。 In the telecentric fan 10 of this embodiment, the inter-wing distance L2 at the maximum thickness position P2, the inter-wing distance L3 at the site P3, and the inter-wing distance L4 at the site P4 have the same value. Negative on outer diameter side The range between the part P4 and the part P5 in the pressing surface 24B is gradually shortened as the part P4 approaches the part P5. The inter-wing distance L5 at the site P5 and the inter-wing distance L6 at the site P6 have the same value.
若舉出具體例,則負壓面長度24L為28.3mm,最大厚度位置P2及部位P3、P4上的翼間距離(L2~L4)為3.6mm,部位P5、P6上的翼間距離(L5、L6)為3.4mm。最大厚度位置P2、與自最大厚度位置P2朝向後緣部27之側離開21.4mm的長度量的位置之間的範圍上的翼間距離為大致一定。 If a specific example is given, the length of the negative pressure surface 24L is 28.3mm, the inter-wing distance (L2 ~ L4) at the maximum thickness position P2 and the parts P3 and P4 is 3.6mm, and the inter-wing distance (L5 at the parts P5 and P6) L6) is 3.4mm. The inter-wing distance in a range between the maximum thickness position P2 and a position separated by a length of 21.4 mm from the maximum thickness position P2 toward the side of the trailing edge portion 27 is substantially constant.
若使遠心風扇10旋轉,則如圖1中的箭頭102所示,產生自前緣部26流入,通過翼面23上而從後緣部27流出的空氣流動。本實施形態的遠心風扇10具備有滿足如上述的翼間距離的複數個葉片體21。在旋轉方向相鄰的葉片體21之間的流路,形成為隨著自遠心風扇10的中心側朝向徑方向外側以大致一定的流路剖面積延伸。流過在旋轉方向相鄰的葉片體21之間的流體的流速,即便流體自遠心風扇10之中心側往徑方向外側行進,也能始終為大致一定。 When the telecentric fan 10 is rotated, as shown by an arrow 102 in FIG. 1, air flowing in from the leading edge portion 26 and flowing out of the trailing edge portion 27 through the airfoil 23 occurs. The telecentric fan 10 according to the present embodiment includes a plurality of blade bodies 21 satisfying the above-mentioned inter-wing distance. The flow path between the blade bodies 21 adjacent to each other in the rotation direction is formed to extend with a substantially constant flow path cross-sectional area as it goes from the center side of the telecentric fan 10 to the outside in the radial direction. The flow velocity of the fluid flowing between the blade bodies 21 adjacent to each other in the rotation direction can be kept substantially constant even if the fluid travels from the center side of the telecentric fan 10 to the outside in the radial direction.
本實施形態中的複數個葉片體21,為構成與減速翼列或增速翼列不同的等速翼列。即便流體往徑方向外側行進,也能夠抑制流速下降的情況,且也能抑制流體所具備的動能下降的情況。藉此,能夠使至流體所具備的動能相對於作用在葉片體21的負壓處於劣勢為止的時間上及距離上的限度大幅地變長。也能夠抑制流體自葉片體21剝離的情況,結果為,既能夠抑制作為葉片體21的性能降低的情況,也能夠大幅地減輕因抑制剝離而產生噪音的情況。 The plurality of blade bodies 21 in the present embodiment have a constant-speed wing row that is different from the deceleration wing row or the increase-wing wing row. Even if the fluid travels outward in the radial direction, it is possible to suppress a decrease in the flow velocity and a decrease in the kinetic energy of the fluid. Thereby, the time and distance limits until the kinetic energy of the fluid with respect to the negative pressure acting on the blade body 21 is inferior can be made long. It is also possible to suppress the peeling of the fluid from the blade body 21, and as a result, it is possible to suppress the degradation of the performance as the blade body 21 and also to significantly reduce the occurrence of noise due to the suppression of peeling.
參照圖5~圖7,針對實施形態二中的遠心風扇10A進行說明。圖5為表示遠心風扇10A的前視圖。圖6為放大表示圖5中的VI線所圍繞的區域的前視圖,圖7為放大表示圖6中所示的遠心風扇10A的一部分(葉片體21)的前視圖。 A telecentric fan 10A according to the second embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a front view showing a telecentric fan 10A. 6 is an enlarged front view showing a region surrounded by a line VI in FIG. 5, and FIG. 7 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10A shown in FIG. 6.
如圖5所示,實施形態二中的遠心風扇10A也與實施形態一中的遠心風扇10(圖2)同樣地,作為整體具有大致圓筒形的外觀,且複數個葉片體21配置於該大致圓筒形的側面。遠心風扇10A由樹脂一體形成,以假想的旋轉軸101為中心往箭頭103所示的方向旋轉。實施形態一中的遠心風扇10與實施形態二中的遠心風扇10A,於以下之方面不相同。 As shown in FIG. 5, the telecentric fan 10A in the second embodiment also has a generally cylindrical appearance as a whole, similar to the telecentric fan 10 (FIG. 2) in the first embodiment, and a plurality of blade bodies 21 are arranged in the same. Roughly cylindrical sides. The telecentric fan 10A is integrally formed of a resin, and rotates in a direction indicated by an arrow 103 around a virtual rotation axis 101 as a center. The telecentric fan 10 in the first embodiment is different from the telecentric fan 10A in the second embodiment in the following points.
如圖6及圖7所示,複數個葉片體21之各個具有包含前緣部26的內徑側葉片部21M、和包含後緣部27的外徑側葉片部21N。外徑側葉片部21N,位於內徑側葉片部21M的徑方向外側。本實施形態的內徑側葉片部21M,為葉片體21之中、由前緣部26及點P10~P12所圍繞的部分。 As shown in FIGS. 6 and 7, each of the plurality of blade bodies 21 includes an inner diameter side blade portion 21M including a leading edge portion 26 and an outer diameter side blade portion 21N including a trailing edge portion 27. The outer-diameter-side vane portion 21N is located radially outward of the inner-diameter-side vane portion 21M. The inner diameter side blade portion 21M of this embodiment is a portion of the blade body 21 surrounded by the leading edge portion 26 and the points P10 to P12.
內徑側葉片部21M包含最大厚度部分21Ma、擴大部分21Mb、及縮小部分21Mc。最大厚度部分21Ma為規定內徑側葉片部21M之中的最大厚度h2的部分。最大厚度h2例如為3.6mm。點P11表示最大厚度部分21Ma中的負壓面24上的位置。 The inner diameter side blade portion 21M includes a maximum thickness portion 21Ma, an enlarged portion 21Mb, and a reduced portion 21Mc. The maximum thickness portion 21Ma is a portion that defines the maximum thickness h2 among the inner diameter side blade portions 21M. The maximum thickness h2 is, for example, 3.6 mm. The point P11 indicates the position on the negative pressure surface 24 in the maximum thickness portion 21Ma.
擴大部分21Mb為內徑側葉片部21M之中的較最大厚度部分21Ma更靠前緣部26之側的部分。擴大部分21Mb位於前緣部26與最大厚度部分21Ma之間,擴大部分21Mb的翼厚h1(圖6)構成為隨著自前緣部26之側朝向徑方向外側緩緩地變厚。 The enlarged portion 21Mb is a portion of the inner-diameter-side blade portion 21M that is closer to the leading edge portion 26 than the largest thickness portion 21Ma. The enlarged portion 21Mb is located between the leading edge portion 26 and the maximum thickness portion 21Ma. The wing thickness h1 (FIG. 6) of the enlarged portion 21Mb is gradually thickened as it goes from the side of the leading edge portion 26 toward the outside in the radial direction.
縮小部分21Mc為內徑側葉片部21M之中的較最大厚度部分21Ma更靠徑方向外側的部分。縮小部分21Mc位於最大厚度部分21Ma與外徑側葉片部21N之間,縮小部分21Mc的翼厚h3、h4構成為隨著自最大厚度部分21Ma之側朝向徑方向外側緩緩地變薄。 The reduced portion 21Mc is a portion of the inner-diameter-side blade portion 21M that is closer to the outside in the radial direction than the largest-thickness portion 21Ma. The reduced portion 21Mc is located between the maximum thickness portion 21Ma and the outer diameter side blade portion 21N. The wing thicknesses h3 and h4 of the reduced portion 21Mc are gradually thinned toward the outside in the radial direction from the side of the maximum thickness portion 21Ma.
內徑側葉片部21M的負壓面24M及內徑側葉片部21M的正壓面25M,均具有朝向旋轉方向(圖6所示的箭頭103)之相反側彎曲成凸狀的表面形狀。內徑側葉片部21M的負壓面24M的曲率,大於內徑側葉片部21M的正壓面25M的曲率。 Both the negative pressure surface 24M of the inner diameter side blade portion 21M and the positive pressure surface 25M of the inner diameter side blade portion 21M have a surface shape that is curved in a convex shape toward the opposite side of the rotation direction (arrow 103 shown in FIG. 6). The curvature of the negative pressure surface 24M of the inner diameter side blade portion 21M is larger than the curvature of the positive pressure surface 25M of the inner diameter side blade portion 21M.
外徑側葉片部21N包含有自後緣部27之側往徑方向內側以大致相同的翼厚h6、h5(圖6)延伸的板狀部21Np。翼厚h6、h5例如為1.0mm。板狀部21Np的負壓面24Np的曲率及板狀部21Np的正壓面25Np的曲率,均小於內徑側葉片部21M的負壓面24M的曲率。 The outer diameter side blade portion 21N includes a plate-like portion 21Np extending from the side of the trailing edge portion 27 to the inside in the radial direction with approximately the same wing thicknesses h6 and h5 (FIG. 6). The wing thicknesses h6 and h5 are, for example, 1.0 mm. The curvature of the negative pressure surface 24Np of the plate-shaped portion 21Np and the curvature of the positive pressure surface 25Np of the plate-shaped portion 21Np are smaller than the curvature of the negative pressure surface 24M of the inner diameter side blade portion 21M.
若使遠心風扇10A旋轉,則產生自前緣部26流入,通過翼面23上而從後緣部27流出的空氣流動。本實施形態的遠心風扇10A具備有滿足如上述的翼厚及曲率的複數個葉片體21。在旋轉方向相鄰的葉片體21之間的流路,形成為隨著自遠心風扇10A的中心側朝向徑方向外側以大致一定的流路剖面積延伸。流過在旋轉方向相鄰的葉片體21之間的流體的流速,即便流體自遠心風扇10A之中心側往徑方向外側行進,也能始終為大致一定。 When the telecentric fan 10A is rotated, air flowing in from the leading edge portion 26 and flowing out of the trailing edge portion 27 through the airfoil 23 is generated. The telecentric fan 10A of the present embodiment includes a plurality of blade bodies 21 satisfying the above-mentioned wing thickness and curvature. The flow path between the blade bodies 21 adjacent to each other in the rotation direction is formed so as to extend along the radial direction from the center side of the telecentric fan 10A to a substantially constant flow path cross-sectional area. The flow velocity of the fluid flowing between the blade bodies 21 adjacent to each other in the rotation direction can be kept substantially constant even if the fluid travels from the center side of the telecentric fan 10A to the outside in the radial direction.
本實施形態中的複數個葉片體21,也為構成與減速翼列或增速翼列不同的等速翼列。即便流體往徑方向外側行進,也能夠抑制流速下降的情況,且也能抑制流體所具備的動能下降的情況。藉此,能夠使至流體所具備的動能相對於作用在葉片體21的負壓處於劣勢為止的時間上及距離上 的限度大幅地變長。也能夠抑制流體自葉片體21剝離的情況,結果為,既能夠抑制作為葉片體21的性能降低的情況,也能夠大幅地減輕因抑制剝離而產生噪音的情況。 The plurality of blade bodies 21 in this embodiment are also constant-speed wing rows that are different from the deceleration wing row or the increase-speed wing row. Even if the fluid travels outward in the radial direction, it is possible to suppress a decrease in the flow velocity and a decrease in the kinetic energy of the fluid. Thereby, the time and distance until the kinetic energy of the fluid is inferior to the negative pressure acting on the blade body 21 can be achieved. The limits have been significantly lengthened. It is also possible to suppress the peeling of the fluid from the blade body 21, and as a result, it is possible to suppress the degradation of the performance as the blade body 21 and also to significantly reduce the occurrence of noise due to the suppression of peeling.
參照圖7,作為較佳的實施形態,只要內徑側葉片部21M的正壓面及外徑側葉片部21N的正壓面在點P10的位置上彼此正切而平順地連接,內徑側葉片部21M的負壓面與外徑側葉片部21N的負壓面在點P12的位置上彼此正切而平順地連接即可。根據該構成,在空氣流過旋轉方向上相鄰的葉片體21之間時,於空氣流動中有效地產生升力,藉此能夠進一步提高作為葉片體21的性能。 Referring to FIG. 7, as a preferred embodiment, as long as the positive pressure surface of the inner diameter side blade portion 21M and the positive pressure surface of the outer diameter side blade portion 21N are connected to each other tangentially and smoothly at the point P10, the inner diameter side blade The negative pressure surface of the portion 21M and the negative pressure surface of the outer diameter side blade portion 21N may be connected tangently and smoothly to each other at the position of the point P12. According to this configuration, when air flows between the adjacent blade bodies 21 in the rotation direction, lift is effectively generated in the air flow, and thereby the performance as the blade body 21 can be further improved.
參照圖7,作為較佳的實施形態,只要外徑側葉片部21N的最大厚度小於內徑側葉片部21M的最大厚度即可。進一步地,只要外徑側葉片部21N的彎度t2小於內徑側葉片部21M的彎度t1即可。外徑側葉片部21N的彎度t2、及內徑側葉片部21M的彎度t1為如以下所定義的值。點P10位於葉片體21的正壓面25之中、內徑側葉片部21M的正壓面與外徑側葉片部21N的正壓面之間。 Referring to FIG. 7, as a preferred embodiment, the maximum thickness of the outer diameter side blade portion 21N may be smaller than the maximum thickness of the inner diameter side blade portion 21M. Further, it is sufficient that the camber t2 of the outer-diameter side blade portion 21N is smaller than the camber t1 of the inner-diameter side blade portion 21M. The camber t2 of the outer-diameter blade portion 21N and the camber t1 of the inner-diameter blade portion 21M are values defined as follows. The point P10 is located among the positive pressure surface 25 of the blade body 21 between the positive pressure surface of the inner diameter side blade portion 21M and the positive pressure surface of the outer diameter side blade portion 21N.
描繪連結內徑側葉片部21M中的前緣部26與點P10的直線LN1,將自內徑側葉片部21M中的負壓面起下垂至直線LN1的垂線的長度為最大的位置(點P11)上的垂線W1的長度,定義作為內徑側葉片部21M的彎度t1。描繪連結外徑側葉片部21N中的點P10與後緣部27的直線LN2,將自外徑側葉 片部21N中的負壓面起下垂至直線LN2的垂線的長度為最大的位置P13上的垂線W2的長度,定義作為外徑側葉片部21N的彎度t2。 A straight line LN1 connecting the leading edge portion 26 in the inner diameter side blade portion 21M and the point P10 is drawn, and a position where the length of the perpendicular line from the negative pressure surface in the inner diameter side blade portion 21M to the straight line LN1 is maximized (point P11 The length of the vertical line W1 on) is defined as the camber t1 of the inner-diameter side blade portion 21M. A straight line LN2 connecting the point P10 in the outer-diameter-side blade portion 21N and the trailing edge portion 27 is drawn. The length of the vertical line W2 at the position P13 where the negative pressure surface in the sheet portion 21N sags down to the straight line LN2 is the largest, and is defined as the camber t2 of the outer diameter side blade portion 21N.
根據上述構成,在空氣流過旋轉方向上相鄰的葉片體21之間時,於空氣流動中有效地產生升力,藉此能夠進一步提高作為葉片體21的性能。結果為,既能夠抑制作為葉片體21的性能降低的情況,也能夠大幅地減輕因抑制剝離而產生噪音的情況。 According to the above configuration, when air flows between the adjacent blade bodies 21 in the rotation direction, lift is effectively generated in the air flow, and thereby the performance as the blade body 21 can be further improved. As a result, it is possible to suppress both a reduction in performance as the blade body 21 and a reduction in the occurrence of noise due to suppression of peeling.
參照圖8及圖9,針對實施形態三中的遠心風扇10B進行說明。圖8為表示遠心風扇10B的立體圖。圖9為放大表示圖8中所示的遠心風扇10B的一部分(葉片體21)的前視圖。 A telecentric fan 10B in the third embodiment will be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view showing a telecentric fan 10B. FIG. 9 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10B shown in FIG.
如圖8所示,實施形態三中的遠心風扇10B也與實施形態一、二中的遠心風扇10(圖2)、10A(圖5)同樣地,作為整體具有大致圓筒形的外觀,且複數個葉片體21配置於該大致圓筒形的側面。遠心風扇10B由樹脂一體形成,以假想的旋轉軸101(圖8)為中心往箭頭103所示的方向旋轉。實施形態二中的遠心風扇10A(圖5)與實施形態三中的遠心風扇10B(圖8、圖9),於以下之方面不相同。 As shown in FIG. 8, the telecentric fan 10B in the third embodiment also has a substantially cylindrical appearance as a whole in the same manner as the telecentric fans 10 (FIG. 2) and 10A (FIG. 5) in the first and second embodiments. The plurality of blade bodies 21 are arranged on the substantially cylindrical side surface. The telecentric fan 10B is integrally formed of a resin, and rotates in a direction indicated by an arrow 103 around a virtual rotation shaft 101 (FIG. 8). The telecentric fan 10A (FIG. 5) in the second embodiment is different from the telecentric fan 10B (FIGS. 8 and 9) in the third embodiment in the following points.
在遠心風扇10B中,於內徑側葉片部21M(圖9)設有貫通孔29。貫通孔29形成為包含內徑側葉片部21M的最大厚度部分21Ma,於相對於遠心風扇10B的旋轉軸101平行的方向延伸。 In the telecentric fan 10B, a through hole 29 is provided in the inner diameter side blade portion 21M (FIG. 9). The through hole 29 is formed to include a maximum thickness portion 21Ma of the inner diameter side blade portion 21M, and extends in a direction parallel to the rotation axis 101 of the telecentric fan 10B.
根據上述構成,能夠減輕葉片體21的重量,並且能緩和及減少在葉片體21的厚壁部(最大厚度部分21Ma的附近)會產生的成形時的縮痕(sink mark)。此外,能夠大幅地抑制遠心風扇10B在旋轉時產生的不平衡,進一步地也能降低遠心風扇10B的振動噪音。 According to the above-mentioned configuration, the weight of the blade body 21 can be reduced, and a sink mark at the time of forming that can occur in the thick portion (near the maximum thickness portion 21Ma) of the blade body 21 can be reduced and reduced. In addition, it is possible to significantly suppress the imbalance generated during the rotation of the telecentric fan 10B, and further reduce the vibration noise of the telecentric fan 10B.
圖10為放大表示實施形態三的變形例中的遠心風扇10C的一部分(葉片體21)的前視圖。在遠心風扇10C中,於內徑側葉片部21M形成有合計2個的貫通孔29A、29B。貫通孔29A、29B在相對於遠心風扇10C的旋轉軸平行的方向延伸。貫通孔29A、29B分別在內徑側葉片部21M的最大厚度部分21Ma的徑方向內側與徑方向外側各形成一個。 FIG. 10 is an enlarged front view showing a part of the telecentric fan 10C (the blade body 21) in a modification of the third embodiment. In the telecentric fan 10C, a total of two through holes 29A and 29B are formed in the inner diameter side blade portion 21M. The through holes 29A and 29B extend in a direction parallel to the rotation axis of the telecentric fan 10C. Each of the through holes 29A and 29B is formed in the radial direction inner side and the radial direction outer side of the maximum thickness portion 21Ma of the inner diameter side blade portion 21M.
根據上述構成,能夠進一步減輕葉片體21的重量,並且能更加地緩和及減少在葉片體21的厚壁部(最大厚度部分21Ma的附近)會產生的成形時的縮痕。此外,能夠大幅地抑制遠心風扇10C在旋轉時產生的不平衡,也能進一步地降低遠心風扇10C的振動噪音。 According to the above configuration, it is possible to further reduce the weight of the blade body 21, and it is possible to further alleviate and reduce the shrinkage marks at the time of molding that occur in the thick wall portion (near the maximum thickness portion 21Ma) of the blade body 21. In addition, it is possible to significantly suppress the imbalance generated during the rotation of the telecentric fan 10C, and to further reduce the vibration noise of the telecentric fan 10C.
在上述的實施形態三(圖9)及其變形例(圖10)中,在從相對於旋轉軸101平行的方向觀察內徑側葉片部21M之中的形成有貫通孔29、29A、29B的內周面時,該內周面呈現圓形狀。 In the third embodiment (FIG. 9) and its modification (FIG. 10), the through-holes 29, 29A, and 29B are formed in the inner-diameter-side blade portion 21M as viewed from a direction parallel to the rotation axis 101. In the case of the inner peripheral surface, the inner peripheral surface has a circular shape.
並不限於如上述的構成,也可如實施形態一中的圖3、圖4所示,在從相對於旋轉軸101平行的方向觀察內徑側葉片部21M之中的形成有貫通孔29的內周面時,該內周面呈現眉月形狀。藉由眉月形狀的貫通孔29,也能獲得如上述實施形態三及其變形例的說明中已說明般的作用及效果,並且也能期待作為遠心風扇的美觀提高。 The configuration is not limited to the above, and as shown in FIG. 3 and FIG. 4 of the first embodiment, the through-hole 29 in the inner-diameter-side blade portion 21M may be viewed from a direction parallel to the rotation axis 101. On the inner peripheral surface, the inner peripheral surface assumes the shape of an eyebrow. The eyebrow-shaped through-holes 29 can also obtain the functions and effects as described in the description of the third embodiment and its modification, and can also improve the appearance of the telecentric fan.
參照圖11,針對實施形態四中的遠心風扇10D進行說明。圖11為放大表示遠心風扇10D的一部分(葉片體21)的前視圖。 A telecentric fan 10D according to the fourth embodiment will be described with reference to FIG. 11. FIG. 11 is an enlarged front view showing a part of the telecentric fan 10D (the blade body 21).
實施形態四中的遠心風扇10D與實施形態一~三中的遠心風扇,於在遠心風扇10D形成有凹狀的缺口29C以取代貫通孔29(貫通孔29A、29B)的這方面不相同。缺口29C在以從內徑側葉片部21M的正壓面25的長邊方向上的靠近外徑側葉片部21N的部分接近前緣部26的方式延伸的這方面,與貫通孔29的構成不相同。 The telecentric fan 10D in the fourth embodiment is different from the telecentric fan in the first to third embodiments in that a concave notch 29C is formed in the telecentric fan 10D to replace the through hole 29 (through holes 29A, 29B). The notch 29C extends from the positive-pressure surface 25 of the inner-diameter-side blade portion 21M to the front-edge portion 26 in the longitudinal direction of the portion adjacent to the outer-diameter-side blade portion 21N, and does not differ from the configuration of the through-hole 29. the same.
藉由上述構成,也能夠進一步減輕葉片體21的重量,並且能更加地緩和及減少在葉片體21的厚壁部(最大厚度部分21Ma的附近)會產生的成形時的縮痕。此外,也能夠大幅地抑制遠心風扇10D在旋轉時產生的不平衡,且也能進一步地降低遠心風扇10D的振動噪音。 With the above-mentioned configuration, the weight of the blade body 21 can be further reduced, and the shrinkage marks at the time of forming which occur in the thick wall portion (near the maximum thickness portion 21Ma) of the blade body 21 can be further alleviated and reduced. In addition, it is possible to significantly suppress the imbalance generated during the rotation of the telecentric fan 10D, and further reduce the vibration noise of the telecentric fan 10D.
參照圖12,針對實施形態四的第1變形例中的遠心風扇10E進行說明。圖12為放大表示遠心風扇10E的一部分(葉片體21)的前視圖。 A telecentric fan 10E in a first modification of the fourth embodiment will be described with reference to FIG. 12. Fig. 12 is an enlarged front view showing a part of the telecentric fan 10E (the blade body 21).
本實施形態中的遠心風扇10E(圖12)與實施形態四中的遠心風扇10D(圖11)在以下之方面不相同,即,遠心風扇10E中的缺口29C包含以接近前緣部26的方式延伸的部分29C1、和以遠離前緣部26的方式延伸的部分29C2。 The telecentric fan 10E (FIG. 12) in this embodiment is different from the telecentric fan 10D (FIG. 11) in the fourth embodiment in that the notch 29C in the telecentric fan 10E includes a way to approach the leading edge portion 26. An extended portion 29C1 and a portion 29C2 extending away from the leading edge portion 26.
藉由上述構成,也能夠進一步減輕葉片體21的重量,並且能更加地緩和及減少在葉片體21的厚壁部(最大厚度部分21Ma的附近)會產生的成形時的縮痕。此外,也能夠大幅地抑制遠心風扇10E在旋轉時產生的不平衡,且也能進一步地降低遠心風扇10E的振動噪音。 With the above-mentioned configuration, the weight of the blade body 21 can be further reduced, and the shrinkage marks at the time of forming which occur in the thick wall portion (near the maximum thickness portion 21Ma) of the blade body 21 can be further alleviated and reduced. In addition, it is possible to greatly suppress the imbalance generated during the rotation of the telecentric fan 10E, and further reduce the vibration noise of the telecentric fan 10E.
參照圖13,針對實施形態四的第2變形例中的遠心風扇10F進行說明。圖13為放大表示遠心風扇10F的一部分(葉片體21)的前視圖。 A telecentric fan 10F in a second modification of the fourth embodiment will be described with reference to FIG. 13. FIG. 13 is an enlarged front view showing a part (blade body 21) of the telecentric fan 10F.
本實施形態中的遠心風扇10F(圖13)與上述的各實施形態中的遠心風扇,在遠心風扇10F中的內徑側葉片部21M與外徑側葉片部21N彼此分開形成的這方面不相同。 The telecentric fan 10F (FIG. 13) in this embodiment is different from the telecentric fan in each of the embodiments described above in that the inner diameter side blade portion 21M and the outer diameter side blade portion 21N in the telecentric fan 10F are formed separately from each other. .
藉由上述構成,也能夠進一步減輕葉片體21的重量,並且能更加地緩和及減少在葉片體21的厚壁部(最大厚度部分21Ma的附近)會產生的成形時的縮痕。此外,也能夠大幅地抑制遠心風扇10F在旋轉時產生的不平衡,且也能進一步地降低遠心風扇10F的振動噪音。 With the above-mentioned configuration, the weight of the blade body 21 can be further reduced, and the shrinkage marks at the time of forming which occur in the thick wall portion (near the maximum thickness portion 21Ma) of the blade body 21 can be further alleviated and reduced. In addition, it is possible to significantly suppress the imbalance generated during the rotation of the telecentric fan 10F, and further reduce the vibration noise of the telecentric fan 10F.
本實施形態中,針對實施形態一中的遠心風扇10(圖1)的製造時所使用的成型用模具、使用有遠心風扇10的送風機及空氣清淨機進行說明。本實施形態中於以下揭示的內容,也可適用於上述實施形態二~四及該等之變形例中的遠心風扇。 In this embodiment, a molding die used in manufacturing the telecentric fan 10 (FIG. 1) in the first embodiment, a blower using the telecentric fan 10, and an air cleaner will be described. The contents disclosed below in this embodiment can also be applied to the telecentric fans in the second to fourth embodiments and the modifications thereof.
圖14為表示在遠心風扇10的製造時所使用的成型用模具110的剖面圖。成型用模具110具有固定側模具114及可動側模具112。藉由固定側模具114及可動側模具112,規定與遠心風扇10大致相同形狀、供注入流動性樹脂的腔室116。 FIG. 14 is a cross-sectional view showing a molding die 110 used in manufacturing the telecentric fan 10. The molding die 110 includes a fixed-side die 114 and a movable-side die 112. The fixed-side mold 114 and the movable-side mold 112 define a cavity 116 having a shape substantially the same as that of the telecentric fan 10 and into which a fluid resin is injected.
在成型用模具110,也可以設置用於提高注入於腔室116的樹脂之流動性的未圖示之加熱器。如上述的加熱器之設置,例如在使用含玻璃纖維AS樹脂般的已使強度增加的合成樹脂的情形時特別有效果。 The molding die 110 may be provided with a heater (not shown) for improving the fluidity of the resin injected into the cavity 116. The installation of the heater as described above is particularly effective when a synthetic resin having an increased strength such as a glass fiber AS resin is used.
圖15為表示使用有遠心風扇10的送風機120的剖面圖。圖16為表示沿著圖15中的XVI-XVI線上的送風機120的剖面形狀的剖面圖。送風機120在外裝殼罩126內具有驅動馬達128(圖16)、遠心風扇10、及殼罩129。 FIG. 15 is a cross-sectional view showing a blower 120 using a telecentric fan 10. FIG. 16 is a cross-sectional view showing a cross-sectional shape of the blower 120 along the XVI-XVI line in FIG. 15. The blower 120 includes a drive motor 128 (FIG. 16), a telecentric fan 10, and a casing 129 in an outer casing 126.
驅動馬達128之輸出軸,與遠心風扇10的軸套16(圖16)連結。殼罩129具有引導壁129a。引導壁129a藉由配置在遠心風扇10之外周上的大致3/4圓弧形成。引導壁129a形成為一邊將藉由葉片體21之旋轉而產生的氣流往葉片體21之旋轉方向引導,一邊使氣流之速度增大。 The output shaft of the drive motor 128 is connected to the shaft sleeve 16 (FIG. 16) of the telecentric fan 10. The casing 129 has a guide wall 129a. The guide wall 129 a is formed by a substantially 3/4 circular arc arranged on the outer periphery of the telecentric fan 10. The guide wall 129a is formed to increase the speed of the airflow while guiding the airflow generated by the rotation of the blade body 21 in the rotation direction of the blade body 21.
在殼罩129形成有吸入部130(圖16)及吹出部127。吸入部130形成為位於旋轉軸101之延長上。吹出部127形成為自引導壁129a的一部分往引導壁129a之切線方向的一方開放。吹出部127形成為自引導壁129a的一部分往引導壁129a的切線方向的一方突出的方管形狀。 A suction portion 130 (FIG. 16) and a blowing portion 127 are formed in the casing 129. The suction portion 130 is formed on an extension of the rotation shaft 101. The blow-out portion 127 is formed so as to open from a part of the guide wall 129a to one of the tangential directions of the guide wall 129a. The blowout part 127 is formed in the shape of a rectangular tube which protrudes from a part of the guide wall 129a toward one of the tangential directions of the guide wall 129a.
藉由驅動馬達128(圖16)的驅動,遠心風扇10往箭頭103(圖15)所示的方向旋轉。此時,空氣自吸入部130被取入至殼罩129內,自遠心風扇10的內周側空間131往外周側空間132送出。被送至外周側空間132的空氣,沿著箭頭104所示的方向於周方向流動,通過吹出部127往外部送風。 Driven by the drive motor 128 (FIG. 16), the telecentric fan 10 rotates in a direction shown by an arrow 103 (FIG. 15). At this time, air is taken into the casing 129 from the suction part 130 and sent out from the inner peripheral side space 131 of the telecentric fan 10 to the outer peripheral side space 132. The air sent to the outer peripheral side space 132 flows in the circumferential direction in the direction indicated by the arrow 104, and blows air to the outside through the blowing section 127.
圖17為表示使用有遠心風扇10的空氣清淨機140的剖面圖。空氣清淨機140具有殼體144、送風機150、通道145、及(HEPA:High Efficiency Particulate Air Filter)濾網141。 FIG. 17 is a cross-sectional view showing an air cleaner 140 using a telecentric fan 10. The air cleaner 140 includes a casing 144, a blower 150, a passage 145, and a (HEPA: High Efficiency Particulate Air Filter) filter 141.
殼體144具有後壁144a及頂壁144b。在殼體144形成有用於將設置有空氣清淨機140的室內的空氣吸入的吸入口142。吸入口142形成於後壁144a。在殼體144進一步形成有吹出口143,該吹出口143將清淨空氣朝向室內排出。吹出口143形成於頂壁144b。一般而言,空氣清淨機140設置於牆壁邊以使後壁144a與室內的牆壁對向。 The housing 144 has a rear wall 144a and a top wall 144b. The casing 144 is formed with a suction port 142 for sucking air in a room in which the air cleaner 140 is installed. The suction port 142 is formed in the rear wall 144a. An air outlet 143 is further formed in the casing 144, and the air outlet 143 exhausts clean air toward the room. The air outlet 143 is formed in the top wall 144b. Generally, the air cleaner 140 is installed on the side of the wall so that the rear wall 144a faces the wall in the room.
濾網141以與吸入口142相向的方式配置於殼體144的內部。通過吸入口142而被導入至殼體144內部的空氣,藉由通過濾網141而被去除異物,成為清淨空氣。 The screen 141 is disposed inside the housing 144 so as to face the suction port 142. The air introduced into the housing 144 through the suction port 142 passes through the filter 141 to remove foreign matter and becomes clean air.
送風機150將室內的空氣吸引至殼體144內部,將已由濾網141清淨後的空氣,通過吹出口143往室內送出。送風機150具有遠心風扇10、殼罩152、及驅動馬達151。殼罩152具有引導壁152a。在殼罩152形成有吸入部153及吹出部154。 The blower 150 sucks the indoor air into the inside of the casing 144, and sends the air that has been cleaned by the filter 141 to the room through the air outlet 143. The blower 150 includes a telecentric fan 10, a casing 152, and a drive motor 151. The casing 152 has a guide wall 152a. A suction portion 153 and a blowing portion 154 are formed in the casing 152.
通道145設於送風機150之上方,被設置作為將清淨空氣自殼罩152往吹出口143引導的導風路。通道145具有其下端與吹出部154連接且其上端開放之成為方管形的形狀。通道145構成為將自吹出部154吹出的清淨空氣朝向吹出口143呈層流地引導。 The passage 145 is provided above the blower 150 and is provided as an air guide path for guiding clean air from the casing 152 to the air outlet 143. The channel 145 has a square tube shape in which a lower end is connected to the blow-out portion 154 and an upper end is opened. The passage 145 is configured to guide the clean air blown from the blow-out portion 154 toward the blow-out port 143 in a laminar flow.
在具備如上述的構成之空氣清淨機140中,藉由送風機150之驅動,葉片體21進行旋轉,室內的空氣自吸入口142被吸入至殼體144內。此時,在吸入口142及吹出口143間產生空氣流動,被吸入的空氣中所含的塵埃等異物藉由濾網141而被去除。 In the air cleaner 140 having the above-mentioned structure, the blade body 21 is rotated by the blower 150, and the indoor air is sucked into the casing 144 through the suction port 142. At this time, an air flow is generated between the suction port 142 and the blowing port 143, and foreign matter such as dust contained in the sucked air is removed by the filter 141.
通過濾網141獲得的清淨空氣,被吸入至殼罩152內部。此時,被吸入至殼罩152內的清淨空氣,藉由葉片體21周圍的引導壁152a而成為層流。已成為層流的空氣,沿著引導壁152a而被引導至吹出部154,自吹出部154往通道145內送風。空氣自吹出口143朝向外部空間排出。 The clean air obtained through the screen 141 is sucked into the inside of the casing 152. At this time, the clean air sucked into the casing 152 becomes a laminar flow through the guide wall 152 a around the blade body 21. The laminar air is guided to the blowing section 154 along the guide wall 152a, and air is blown from the blowing section 154 into the passage 145. The air is discharged from the air outlet 143 toward the external space.
根據如上述構成的空氣清淨機140,能夠藉由使用送風能力優異的遠心風扇10,而減少驅動馬達151的消耗電力。藉此,能夠實現有助於節能化的空氣清淨機140。在本實施形態中雖舉出空氣清淨機為例進行了說明,但也可將上述的各實施形態中的遠心風扇適用於其他例如空氣調和機(空調)或加濕機、冷卻裝置、換氣裝置等將流體送出的裝置中。 According to the air cleaner 140 configured as described above, it is possible to reduce the power consumption of the drive motor 151 by using the telecentric fan 10 having excellent air supply capability. Thereby, the air cleaner 140 which contributes to energy saving can be implement | achieved. Although the air cleaner has been described as an example in this embodiment, the telecentric fan in each of the above embodiments may be applied to other air conditioners (air conditioners) or humidifiers, cooling devices, and ventilators. A device such as a device that sends out fluid.
例如,若在被使用於吊掛天花板型空調等的多翼式送風機(Sirocco fan)中使用上述各實施形態中的遠心風扇,則能夠提高性能、降低噪音。另外,能夠使噪音為一定,且使風扇的尺寸縮小,進而本體的尺寸縮小等。小型化的結果為,也能夠設置作為壁掛的空調。吊掛天花板型的空調必須進行大規模的施工,但壁掛的房間空調利用一般的施工便能完成,且現存的需求也較大。此外,上述的各實施形態中的遠心風扇也可應用於內藏於壁掛的房間空調中的橫流式風扇(cross flow fan)。 For example, if a telecentric fan in each of the above embodiments is used in a Sirocco fan used in a ceiling-mounted air conditioner or the like, it is possible to improve performance and reduce noise. In addition, the noise can be kept constant, the size of the fan can be reduced, and the size of the body can be reduced. As a result of miniaturization, a wall-mounted air conditioner can also be installed. The ceiling-mounted air conditioner must be constructed on a large scale, but the wall-mounted room air conditioner can be completed by ordinary construction, and the existing demand is also large. In addition, the telecentric fan in each of the embodiments described above can also be applied to a cross flow fan built into a wall-mounted room air conditioner.
參照圖18~圖33,針對與上述各實施形態相關連地進行的實驗例進行說明。在說明時,如圖18所示,將連結葉片體21的前緣部26與後緣部27的直線定義為翼弦線LN3。將翼弦線LN3的長度設為翼弦長C。將自葉片體21的負壓面24起下垂至翼弦線LN3的垂線的長度為最大的位置P15上的垂線LN4的長度設為彎度t。將彎度t/翼弦長C之值定義為彎度比m。 An experimental example performed in association with each of the above embodiments will be described with reference to FIGS. 18 to 33. In the description, as shown in FIG. 18, a straight line connecting the leading edge portion 26 and the trailing edge portion 27 of the blade body 21 is defined as a chord line LN3. Let the length of the chord line LN3 be the chord length C. The length t of the vertical line LN4 at the position P15 from the negative pressure surface 24 of the blade body 21 to the chord line LN3 is the maximum. The value of camber t / chord length C is defined as camber ratio m.
如圖19所示,作為實施例1~9,準備合計9種的遠心風扇。作為實驗例1~9的遠心風扇中共通的條件,均將風扇的外徑設定為236mm,將高度設定為80mm,將葉片體21的翼弦長C設定為20mm,將葉片體21的最小翼厚設定為1mm。 As shown in FIG. 19, as Examples 1 to 9, a total of nine types of telecentric fans were prepared. As conditions common to the telecentric fans of Experimental Examples 1 to 9, the outer diameter of the fan was set to 236 mm, the height was set to 80 mm, the chord length C of the blade body 21 was set to 20 mm, and the minimum wing of the blade body 21 was set. The thickness is set to 1mm.
如圖19及圖20所示,在實驗例1的遠心風扇10S1中,將彎度t設定為4.0mm,將最大翼厚設定為1.0mm。彎度比m(彎度t/翼弦長C)為0.2,表示最小翼厚與最大翼厚之比的翼厚比為1.0。 As shown in FIGS. 19 and 20, in the telecentric fan 10S1 of Experimental Example 1, the camber t was set to 4.0 mm, and the maximum wing thickness was set to 1.0 mm. The camber ratio m (curvature t / chord length C) is 0.2, and the wing thickness ratio representing the ratio of the minimum wing thickness to the maximum wing thickness is 1.0.
如圖19所示,在實驗例2~4的遠心風扇中,分別將彎度t設定為4.22mm、4.5mm、5.0mm,將最大翼厚設定為1.55mm、2.8mm、3.15mm。彎度比m(彎度t/翼弦長C)分別為0.211、0.225、0.25,翼厚比分別為1.55、2.8、3.15。 As shown in FIG. 19, in the telecentric fans of Experimental Examples 2 to 4, the camber t was set to 4.22 mm, 4.5 mm, and 5.0 mm, respectively, and the maximum wing thickness was set to 1.55 mm, 2.8 mm, and 3.15 mm. The camber ratio m (curvature t / wing chord length C) is 0.211, 0.225, and 0.25 respectively, and the wing thickness ratios are 1.55, 2.8, and 3.15, respectively.
如圖19及圖21所示,在實驗例5的遠心風扇10S5中,將彎度t設定為5.6mm,將最大翼厚設定為3.3mm。彎度比m(彎度t/翼弦長C)為0.28,翼厚比為3.3。 As shown in FIGS. 19 and 21, in the telecentric fan 10S5 of Experimental Example 5, the camber t was set to 5.6 mm, and the maximum wing thickness was set to 3.3 mm. The camber ratio m (curvature t / wing chord length C) is 0.28, and the wing thickness ratio is 3.3.
如圖19所示,在實驗例6~8的遠心風扇中,分別將彎度t設定為6.6mm、7.2mm、8.0mm,將最大翼厚設定為3.46mm、3.6mm、3.67mm。彎度比m(彎度t/翼弦長C)分別為0.33、0.36、0.4,翼厚比分別為3.46、3.6、3.67。 As shown in FIG. 19, in the telecentric fans of Experimental Examples 6 to 8, the camber t was set to 6.6 mm, 7.2 mm, and 8.0 mm, respectively, and the maximum wing thickness was set to 3.46 mm, 3.6 mm, and 3.67 mm. The camber ratio m (curvature t / wing chord length C) is 0.33, 0.36, and 0.4 respectively, and the wing thickness ratios are 3.46, 3.6, and 3.67, respectively.
如圖19及圖22所示,在實驗例9的遠心風扇10S9中,將彎度t設定為8.2mm,將最大翼厚設定為3.84mm。彎度比m(彎度t/翼弦長C)為0.41,翼厚比為3.84。 As shown in FIGS. 19 and 22, in the telecentric fan 10S9 of Experimental Example 9, the camber t was set to 8.2 mm, and the maximum wing thickness was set to 3.84 mm. The camber ratio m (curvature t / wing chord length C) is 0.41, and the wing thickness ratio is 3.84.
參照圖19及圖23,使具有上述各條件的實驗例1~9的遠心風扇以1250rpm旋轉,在對風量進行了測定之下,得到如圖19的表所示的結果。圖23為將圖19所示的表圖表化後的圖。可知隨著彎度比m增加,風量也增加。若考慮風量的增加率,則可知較佳為彎度比m為0.25以上。 Referring to FIG. 19 and FIG. 23, the telecentric fans of Experimental Examples 1 to 9 having the above conditions were rotated at 1250 rpm, and the air volume was measured to obtain the results shown in the table of FIG. 19. FIG. 23 is a diagram in which the table shown in FIG. 19 is graphed. It can be seen that as the camber ratio m increases, the air volume also increases. Considering the increase rate of the air volume, it can be seen that the camber ratio m is preferably 0.25 or more.
參照圖19及圖24,使具有上述各條件的實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉,在對噪音進行了測定之下,得到如圖19的表所示的結果。圖24為將圖19所示的表圖表化後的圖。考慮噪音的減少率,也可知較佳為彎度比m為0.25以上。 Referring to FIG. 19 and FIG. 24, the telecentric fans of Experimental Examples 1 to 9 having the above-mentioned conditions were rotated so that the air volume was 7.5 m 3 / min. After measuring the noise, the table shown in FIG. 19 was obtained. the result of. FIG. 24 is a diagram in which the table shown in FIG. 19 is graphed. In consideration of the noise reduction rate, it can be seen that the camber ratio m is preferably 0.25 or more.
參照圖19及圖25,使具有上述各條件的實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉,在對消耗電力進行了測定之下,得到如圖19的表 所示的結果。圖25為將圖19所示的表圖表化後的圖。考慮消耗電力的減少率,也可知較佳為彎度比m為0.25以上。 Referring to FIG. 19 and FIG. 25, the telecentric fans of Experimental Examples 1 to 9 having the above conditions were rotated so that the air volume was 7.5 m 3 / min, and the power consumption was measured to obtain the table shown in FIG. 19 Show results. FIG. 25 is a diagram in which the table shown in FIG. 19 is graphed. Considering the reduction rate of power consumption, it is also found that the camber ratio m is preferably 0.25 or more.
圖26為表示具有上述各條件的實驗例1~9的最大翼厚、與使實驗例1~9的遠心風扇以1250rpm旋轉時所獲得的風量的關係的圖表。可知隨著最大翼厚增加,風量以概略線性的關係增加。 FIG. 26 is a graph showing the relationship between the maximum wing thickness of Experimental Examples 1 to 9 having the above-mentioned conditions and the air volume obtained when the telecentric fan of Experimental Examples 1 to 9 is rotated at 1250 rpm. It can be seen that as the maximum wing thickness increases, the air volume increases in a roughly linear relationship.
圖27為表示具有上述各條件的實驗例1~9的最大翼厚、與使實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉時所產生的噪音的關係的圖表。可知若最大翼厚超過2.8mm(圖19所示的實驗例3),則噪音急遽地減少。可知在最大翼厚為3.6mm(圖19所示的實驗例7)的情形下,噪音為最小。 FIG. 27 is a graph showing the relationship between the maximum wing thickness of Experimental Examples 1 to 9 having the above-mentioned conditions and the noise generated when the telecentric fan of Experimental Examples 1 to 9 is rotated with an air volume of 7.5 m 3 / min. It can be seen that if the maximum wing thickness exceeds 2.8 mm (Experimental Example 3 shown in FIG. 19), the noise sharply decreases. It can be seen that when the maximum wing thickness is 3.6 mm (Experimental Example 7 shown in FIG. 19), the noise is minimal.
圖28為表示具有上述各條件的實驗例1~9的最大翼厚、與使實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉時消耗的電力的關係的圖表。可知若最大翼厚超過3.15mm(圖19所示的實驗例4),則消耗電力急遽地減少。可知在最大翼厚為3.6mm(圖19所示的實驗例7)的情形下,消耗電力為最小。 FIG. 28 is a graph showing the relationship between the maximum wing thickness of the experimental examples 1 to 9 having the above-mentioned conditions and the power consumed when the telecentric fan of the experimental examples 1 to 9 is rotated with an air volume of 7.5 m 3 / min. It can be seen that if the maximum wing thickness exceeds 3.15 mm (Experimental Example 4 shown in FIG. 19), the power consumption sharply decreases. It can be seen that when the maximum wing thickness is 3.6 mm (Experimental Example 7 shown in FIG. 19), the power consumption is minimal.
圖29為表示具有上述各條件的實驗例1~9的翼厚比、與使實驗例1~9的遠心風扇以1250rpm旋轉時所獲得的風量(相對值)的關係的圖表。可知隨著翼厚比增加,風量以概略線性的關係增加。 FIG. 29 is a graph showing a relationship between a wing thickness ratio of Experimental Examples 1 to 9 having the above-mentioned conditions and an air volume (relative value) obtained when the telecentric fan of Experimental Examples 1 to 9 is rotated at 1250 rpm. It can be seen that as the wing thickness ratio increases, the air volume increases in a roughly linear relationship.
圖30為表示具有上述各條件的實驗例1~9的翼厚比、與使實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉時產生的噪音(相對值)的關係的圖表。可知若翼厚比超過2.8mm(圖19所示的實驗例3),則噪音急遽地減少。可知在翼厚比為3.6mm(圖19所示的實驗例7)的情形下,噪音為最小。 FIG. 30 shows the relationship between the wing thickness ratios of Experimental Examples 1 to 9 having the above-mentioned conditions and the noise (relative value) generated when the telecentric fan of Experimental Examples 1 to 9 is rotated with an air volume of 7.5 m 3 / min. Chart. It can be seen that if the wing thickness ratio exceeds 2.8 mm (Experimental Example 3 shown in FIG. 19), the noise decreases sharply. It can be seen that when the wing thickness ratio is 3.6 mm (Experimental Example 7 shown in FIG. 19), the noise is minimal.
圖31為表示具有上述各條件的實驗例1~9的翼厚比、與使實驗例1~9的遠心風扇以風量為7.5m3/min的方式旋轉時消耗的電力(相對值)的關係的圖表。可知若翼厚比超過3.15mm(圖19所示的實驗例4),則消耗電力急遽地減少。可知在翼厚比為3.6mm(圖19所示的實驗例7)的情形下,消耗電力為最小。 FIG. 31 shows the relationship between the wing thickness ratios of Experimental Examples 1 to 9 having the above-mentioned conditions and the power (relative value) consumed when the telecentric fan of Experimental Examples 1 to 9 is rotated with an air volume of 7.5 m 3 / min. Chart. It can be seen that if the wing thickness ratio exceeds 3.15 mm (Experimental Example 4 shown in FIG. 19), the power consumption sharply decreases. It can be seen that when the wing thickness ratio is 3.6 mm (Experimental Example 7 shown in FIG. 19), the power consumption is minimal.
根據以上的實驗例1~9的結果,從風量增大、噪音降低、及消耗電力減少的觀點來看,可知若彎度比m為0.25以上,則能獲得更佳的改善效果。 From the results of the above Experimental Examples 1 to 9, from the viewpoints of increased air volume, reduced noise, and reduced power consumption, it is understood that a better improvement effect can be obtained if the camber ratio m is 0.25 or more.
圖32為放大表示基於上述的實驗例7的遠心風扇10S7的一部分的前視圖。在實驗例7的遠心風扇10S7中(圖19),將彎度t設定為7.2mm,將最大翼 厚設定為3.6mm。彎度比m(彎度t/翼弦長C)為0.36,翼厚比為3.6。根據如上述的遠心風扇10S7,如圖19所示,風量增加8%,噪音減少1.87dB,消耗電力減少6%。 FIG. 32 is an enlarged front view showing a part of the telecentric fan 10S7 according to the aforementioned Experimental Example 7. FIG. In the telecentric fan 10S7 of Experimental Example 7 (Fig. 19), the camber t was set to 7.2 mm, and the maximum wing The thickness is set to 3.6mm. The camber ratio m (curvature t / chord length C) is 0.36, and the wing thickness ratio is 3.6. According to the above-mentioned telecentric fan 10S7, as shown in FIG. 19, the air volume is increased by 8%, the noise is reduced by 1.87dB, and the power consumption is reduced by 6%.
圖33所示的遠心風扇10S7a,在將彎度t設定為7.2mm的這方面,與圖32所示的遠心風扇10S7共通,但在遠心風扇10S7a中,將最大翼厚設定為1.0mm。遠心風扇10S7a的彎度比m(彎度t/翼弦長C)與遠心風扇10S7同為0.36,但遠心風扇10S7a的翼厚比為1.0。根據如上述的遠心風扇10S7a,風量增加4%,噪音增加1dB,消耗電力減少1%。 The telecentric fan 10S7a shown in FIG. 33 is common to the telecentric fan 10S7 shown in FIG. 32 in that the camber t is set to 7.2 mm. However, in the telecentric fan 10S7a, the maximum wing thickness is set to 1.0 mm. The camber ratio m (curvature t / chord length C) of the telecentric fan 10S7a is 0.36 as the telecentric fan 10S7, but the wing thickness ratio of the telecentric fan 10S7a is 1.0. According to the telecentric fan 10S7a as described above, the air volume is increased by 4%, the noise is increased by 1dB, and the power consumption is reduced by 1%.
根據以上的遠心風扇10S7、10S7a的比較可知,藉由不僅彎度比m,最大翼厚或翼厚比也進行最佳化,能謀求風量增大、噪音減少、及消耗電力減少。 From the comparison of the above-mentioned telecentric fans 10S7 and 10S7a, it can be seen that by optimizing not only the camber ratio m but also the maximum wing thickness or the wing thickness ratio, it is possible to increase the air volume, reduce noise, and reduce power consumption.
以上,雖針對實施形態及其變形例、以及實驗例進行了說明,但上述的揭示內容在各方面上均為示例,並非限制的內容。本發明的技術性的範圍是藉由申請專利範圍來表示,且意圖包含與申請專利範圍均等的意思及範圍內的所有的變更。 As mentioned above, although the embodiment, its modification, and an experimental example were demonstrated, the above-mentioned disclosure is an example in every respect, and it is not limited content. The technical scope of the present invention is expressed by the scope of patent application, and is intended to include all changes within the meaning and scope equivalent to the scope of patent application.
本說明書中已揭示的內容,產業上可利用於主要在空氣清淨機或空氣調和機等的具有送風功能的家庭用電器設備上。 What has been disclosed in this specification can be industrially applied to household electrical appliances having a ventilation function, such as an air cleaner or an air conditioner.
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JP5469635B2 (en) * | 2011-05-30 | 2014-04-16 | シャープ株式会社 | Centrifugal fan, molding die and fluid feeder |
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2017
- 2017-08-31 JP JP2019512180A patent/JP6951428B2/en active Active
- 2017-08-31 WO PCT/JP2017/031312 patent/WO2018189931A1/en active Application Filing
- 2017-08-31 CN CN201780089424.1A patent/CN110494654B/en active Active
- 2017-09-04 TW TW106130190A patent/TWI661131B/en not_active IP Right Cessation
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CN203627302U (en) * | 2013-11-20 | 2014-06-04 | 浙江双阳风机有限公司 | Centrifugal fan impeller |
Also Published As
Publication number | Publication date |
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CN110494654A (en) | 2019-11-22 |
JPWO2018189931A1 (en) | 2020-02-20 |
CN110494654B (en) | 2021-09-14 |
JP6951428B2 (en) | 2021-10-20 |
WO2018189931A1 (en) | 2018-10-18 |
TW201837322A (en) | 2018-10-16 |
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