TWI352779B - - Google Patents

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TWI352779B
TWI352779B TW097110726A TW97110726A TWI352779B TW I352779 B TWI352779 B TW I352779B TW 097110726 A TW097110726 A TW 097110726A TW 97110726 A TW97110726 A TW 97110726A TW I352779 B TWI352779 B TW I352779B
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TW
Taiwan
Prior art keywords
fan
sirocco fan
revolutions
sirocco
fin
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TW097110726A
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Chinese (zh)
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TW200916662A (en
Inventor
Okazawa Hiroki
Abe Ryouji
Tsutsumi Hiroshi
Yamatani Takahiro
Nishimiya Kazunobu
Kawanori Yukihiko
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Mitsubishi Electric Corp
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Publication of TW200916662A publication Critical patent/TW200916662A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Description

i0yzr/^ 可風扇1的翼片8的外周圓的直徑。翼弦長L為連結翼片 8的曲線9的内周端9a與外周㈣的直線u的長度。最 大曲線⑤度H為相對於翼片8的曲線9的直線U的垂直線 12的最大長度。入口角〜為翼片8的曲線9的内周端93 的内周接線13與曲線接線Π所形成的角度。出口角〜 為翼片8的曲線9的外周端此的外周接線15與曲線接線 16所形成的角度。入射角α為翼片8的曲線9的内周端 9a的曲線接線14與風的流入方向所形成的角度。翼内周 側前緣的半徑R為形成於翼片8的前緣的圓弧部的半徑。I0yzr/^ The diameter of the outer circumference of the fin 8 of the fan 1. The chord length L is the length of the straight line u connecting the inner peripheral end 9a of the curve 9 of the fin 8 to the outer circumference (four). The maximum curve 5 degrees H is the maximum length of the vertical line 12 with respect to the straight line U of the curve 9 of the flap 8. The entrance angle 〜 is the angle formed by the inner peripheral wire 13 of the inner peripheral end 93 of the curve 9 of the fin 8 and the curved wire Π. The exit angle ~ is the angle formed by the outer peripheral wire 15 of the outer peripheral end of the curve 9 of the fin 8 and the curved wire 16. The incident angle α is the angle formed by the curved line 14 of the inner peripheral end 9a of the curve 9 of the fin 8 and the inflow direction of the wind. The radius R of the leading edge of the inner circumferential side of the blade is the radius of the arc portion formed on the front edge of the airfoil 8.

另一方面，習知的西洛可風扇以符號1〇〇表示，西洛 可風扇100與西洛可風扇i相比，沒有在既定噪音時風量 變少的缺點》此因H/L變小，r/l變大，沒，' 沒2的角度不 適當等的原因’既定噪音時的風量變小。結果，搭載於室 内單元10的情況下，熱交換器3的性能降低，壓縮機的負 載變大，COP降低。 因此’當室内單元搭載西洛可風扇100時，由於既定 脅音時的風量變小’熱交換器3的性能降低，在既定噪音 時，得到既定的空調能力時，在冷房運轉的情況下，冷媒 溫度上升至需要以上，在暖房運轉的情況下，冷媒溫度上 升至需要以上，因此冷媒溫度與室内溫度的溫度差必須增 大，壓縮機的負載變大，有COP下降的問題。 表1表示本實施型態1的西洛可風扇1A與習知的西洛 可風扇100的H/L、R/L、召，、/3 2的值。而且L/D的值為 0.17。 214 8-954 0-PF;Chentf 8 1352779 表1翼片形狀的參數 西洛可風扇ΙΑ 西洛可風扇100 H/L 0.22 0.28 R/L 0.16 0.16 β' 100° 100° /32 43。 43。 在表2中，室内單元10搭載著西洛可風扇1A、西洛 可風扇100，吹出的風量為16m3/min時的嗓音值、轉數。 西洛可風扇以外的條件全部相同。 表2 16m3/min時的噪音> 直、轉數 西洛可風扇1A 西洛可風扇100 噪音值dB 46.5 47.2 轉數rpm 1101 1127 如表1、表2所示，由於H/L=0.22，噪音值、轉數變 小 〇 表3表示本實施型態1的西洛可風扇1B與習知的西洛 可風扇100的H/L、R/L、/3 !、冷2的值。 表3翼片形狀的參數 西洛可風扇IB 西洛可風扇100 H/L 0.28 0. 28 R/L 0.11 0.16 β' 125° 125° 47。 47。 在表4中，室内單元10搭載著西洛可風扇1B、西洛 可風扇100，吹出的風量為1 6 m3/min時的噪音值、轉數。 西洛可風扇以外的條件全部相同。 表4 16m/min時的嚼音， 直、轉數 西洛可風扇1B 西洛可風扇100 噪音值dB 46.1 47.2 轉數rpm 1088 1127 2148-9540-PF；Chentf 9 “52779 如表3、表4所示，由於R/L=〇 u，噪音值、轉數變 /J、〇 表5表示本實施型態！的西洛可風扇ic與習知的西洛 可風扇100的H/L、R/L、召，、心的值。 翼片形狀的參數 ' S7E 西洛可風扇1C 〇Γ28 ' 可風扇100 Π 98 _ R/L 0.16 -—— U· CiO η 1R β 1 β 2 110° Λ Γ9 〇 一一_ 125。 在表6中’室内單元1〇搭載著西洛可風扇κ、西洛 可風扇100’吹出的風量為16mVmin時的噪音值、轉數。 西洛可風扇以外的條件全部相同。 16m3/min時的噪音值、轉數 西洛可風扇1C 西洛可S[息Iflfl ___噪音值dB Γ_ 46.3 ΑΊ 9 _ 轉數rpm 1115 — 啵“乙 __1127 如表5、表6所示，由於心=11〇。1音值、轉數變 /J、 〇 表7表示本實施型態i的西洛可風扇⑺與習知的西洛 可風扇100的H/L、R/L、冷，、冷2的值。 片形狀的參數 H/L — R/L 可風扇ID 西洛可風扇100 —___0.28 __0.28 ________ 0.16 Π 1 R β' ___125。 U. 10 125° ______ 29° 47。 ------ 在表8 + i内單元^ 1〇搭載著西洛可風_⑺、西洛 可風扇1〇〇，吹出的風量為16mVmin時的噪音值轉數。 2l48-9540-PF；Chentf 10 1352779On the other hand, the conventional sirocco fan is indicated by the symbol 1〇〇, and the sirocco fan 100 has no disadvantage of less air volume than the sirocco fan i. This is because the H/L becomes smaller. , r/l becomes large, no, 'The reason why the angle of 2 is not appropriate, etc.' The air volume at the time of the predetermined noise becomes small. As a result, when it is mounted in the indoor unit 10, the performance of the heat exchanger 3 is lowered, the load of the compressor is increased, and the COP is lowered. Therefore, when the indoor unit is equipped with the sirocco fan 100, the air volume at the time of the predetermined whirl is reduced, the performance of the heat exchanger 3 is lowered, and when the predetermined air conditioning capability is obtained at a predetermined noise, the refrigerant is operated in the cold room. When the temperature rises to the required level or more, in the case of a warm room operation, the temperature of the refrigerant rises to more than necessary. Therefore, the temperature difference between the refrigerant temperature and the indoor temperature must be increased, the load of the compressor is increased, and there is a problem that the COP is lowered. Table 1 shows the values of H/L, R/L, and, and /3 of the sirocco fan 1A of the present embodiment 1 and the conventional sirocco fan 100. And the value of L/D is 0.17. 214 8-954 0-PF; Chentf 8 1352779 Table 1 Parameters for the shape of the fins Xiluo Fan ΙΑ Siro Fan 100 H/L 0.22 0.28 R/L 0.16 0.16 β' 100° 100° /32 43. 43. In Table 2, the indoor unit 10 is equipped with a syllabic fan 1A and a sirocco fan 100, and the sound value and the number of revolutions when the air volume blown is 16 m3/min. The conditions other than the sirocco fan are the same. Table 2 Noise at 16m3/min> Straight, number of sirocco fans 1A sirocco fan 100 Noise value dB 46.5 47.2 rpm rpm 1101 1127 As shown in Table 1, Table 2, since H/L=0.22, The noise value and the number of revolutions are reduced. Table 3 shows the values of H/L, R/L, /3!, and cold 2 of the sirocco fan 1B of the present embodiment 1 and the conventional sirocco fan 100. Table 3 Parameters of the shape of the fins Xiluo Fan IB Xiluo Fan 100 H/L 0.28 0. 28 R/L 0.11 0.16 β' 125° 125° 47. 47. In Table 4, the indoor unit 10 is equipped with a sirocco fan 1B and a sirocco fan 100, and the noise value and the number of revolutions when the air volume blown is 16 m3/min. The conditions other than the sirocco fan are the same. Table 4 Chewing sound at 16m/min, straight, number of sirocco fans 1B sirocco fan 100 noise value dB 46.1 47.2 revolutions rpm 1088 1127 2148-9540-PF; Chantf 9 "52779 as shown in Table 3, Table 4 As shown, since R/L=〇u, the noise value, the number of revolutions/J, and the table 5 indicate the embodiment of the sirocco fan ic and the conventional H&L and R of the sirocco fan 100 /L, call, and heart value. Parameters of the wing shape 'S7E XIROCO fan 1C 〇Γ28' Fan 100 Π 98 _ R/L 0.16 -—— U· CiO η 1R β 1 β 2 110° Λ Γ9 〇一一_ 125. In Table 6, the indoor unit 1 is equipped with the noise value and the number of revolutions when the air volume blown by the sirocco fan κ and the sirocco fan 100' is 16 mVmin. Conditions other than the sirocco fan All the same. The noise value at 16m3/min, the number of revolutions of the sirocco fan 1C sirocco S [interest Iflfl ___ noise value dB Γ _ 46.3 ΑΊ 9 _ number of revolutions rpm 1115 — 啵 "B__1127 as shown in Table 5, As shown in 6, due to heart = 11 〇. 1 tone value, revolution number change / J, 〇 Table 7 shows the values of H/L, R/L, cold, and cold 2 of the sirocco fan (7) of the present embodiment i and the conventional sirocco fan 100. . Slice shape parameters H/L — R/L Fan ID West Rock Fan 100 —___0.28 __0.28 ________ 0.16 Π 1 R β' ___125. U. 10 125° ______ 29° 47. ------ In Table 8 + i, the unit ^ 1〇 is equipped with the number of revolutions of the number of noises when the air volume of the sirloin _ (7) and the sirocco fan is 1 〇〇 and the air volume is 16 mVmin. 2l48-9540-PF; Chentf 10 1352779

西洛可風扇以外的條件全部相同 的噪音值、轉數 西洛可風扇1DAll the conditions except the siro fan are the same. The noise value and the number of revolutions.

小 〇 西洛可風扇100 47.2 1127 如表7、表8所示，由於冷2= 29。，噪音值、轉數變 在表 9 中’表示當 h/l=0.22、R/L=〇.ll、万1=11〇 0 ^ 2 29時，室内單元10搭載西洛可風扇1所吹出風 里為1 6m3/min時的噪音值、轉數。 時的噪音值Small 〇 West Rock Fan 100 47.2 1127 As shown in Table 7, Table 8, due to cold 2 = 29. The noise value and the number of revolutions are changed in Table 9 to indicate that when h/l=0.22, R/L=〇.ll, 10,0001=11〇0^2 29, the indoor unit 10 is blown out by the sirocco fan 1. The noise value and number of revolutions in the wind at 16 m3/min. Noise value

β 1、/? 2的組 如表9所示，在最適當的Η/1、R/L 合時，噪音值、轉數會最小。 —接著，針對 h/L=〇.22、r/l=〇 心 = 29。時噪音值、轉數變小的理由做說明。 H/L·大於〇. 26的情況下，翼片的彎 壓面側由於風從翼面離開 又·.大，在負 數增大的原因。另-方面，比。.18小的情二值翼： :奇曲程度變小’由於翼片的升力降 數增大的原因^ 巧^9值、轉 當R/L值大於0·11時，在翼片的前緣’由於镇服 動壓降低，風量降低，i 、靜壓上升、 成為噪音值、轉數增加 當万丨比130。大時，置 的原因。 翼間流入4的流入面積減少，成 2148-9540-PF；Chentf 11 1352779 時的主板附近的風扇内部的相對速度分佈，在表11中表示 單體運轉時的靜壓（llOOrpm、風量8m3/min)。 第6圖所不的西洛可風扇1與第7圖所不的削去前緣 的負壓面側的西洛可風扇IX的風扇内部的相對速度分比 相比’西洛可風扇IX在負壓面側的前緣附近的速度分佈變 大。藉由削除負壓面側，原來風容易流動的前緣的負壓面 側的速度變大，如表1 〇所述，轉數變小、嗓音值變小❶又， 從表11所示的靜壓也可以得到削除前緣的負壓面側的西 洛可風扇IX相同轉數、相同風量時最高的靜壓，藉由削除 前緣的負壓面侧，可得到風容易流動的效果。 表11 llOOrpm、風量8mVmin時的靜壓 西洛可風扇IX 西洛可風扇 靜壓Pa 61.3 60.2 【圖式簡單說明】 第1圖為具備本發明的實施型態1中的西洛可風扇的 空調裝置的室内單元的内部構造的示意平面圖（a)與側面 圖（b)。 第2圖為表示實施型態1的西洛可風扇的翼片形狀的 參數的說明圖。 第3圖為表示實施型態1的西洛可風扇的翼片形狀的 圖。 第4圖為表示實施型態1的西洛可風扇的翼片形狀與 習知的翼片形狀的比較圖。 第5圖為表示實施型態1、2的西洛可風扇的翼片形狀 13 2148-9540-pF；chentf 第6圖為表示實施型態 分佈的圖。 第7圖為表示實施型態 分佈的圖。 【主要元件符號說明】 1〜西洛可風扇， 3〜熱交換器； 5〜吹出口； 7〜轉轴； 9〜曲線； 11〜直線（翼弦長L); 1 3〜内周接線； 15〜外周接線； 中的西洛可風扇的相對速度 t的西洛可風扇的相對速度 〜風扇馬達； 4〜。及入口； 6〜渦管； 8〜翼片； 10〜室内單元； 12〜垂線； 14〜曲線接線； 16〜曲線接線。 2148-9540-PF;ChentfThe group of β 1 and /? 2 As shown in Table 9, the noise value and the number of revolutions are the smallest when the most suitable Η/1 and R/L are combined. - Next, for h/L = 〇.22, r/l = 〇 heart = 29. The reason why the noise value and the number of revolutions become small is explained. When H/L· is larger than 〇. 26, the bending side of the fin is large due to the fact that the wind is separated from the airfoil surface, and the negative number increases. Another-side, than. .18 small love binary wing: : the degree of odd curvature becomes smaller 'causes due to the increase in the lift of the fins ^ Q ^9 value, when the R / L value is greater than 0 · 11, in front of the fin Because of the lowering of the dynamic pressure of the town, the air volume is reduced, i, the static pressure rises, becomes the noise value, and the number of revolutions increases when the ratio is 130. When you are big, set the reason. The inflow area of the inflow 4 between the wings is reduced to 2148-9540-PF; the relative velocity distribution inside the fan near the main board at the time of the Chentf 11 1352779, and the static pressure at the time of the single operation in the table 11 (llOO rpm, air volume 8 m3/min) ). The ratio of the relative speed of the inside of the fan of the sirocco fan IX of the sirocco fan IX on the side of the negative pressure side of the cutting edge of the front edge is not the same as that of the sirocco fan IX. The velocity distribution near the leading edge of the negative pressure side becomes large. By cutting off the side of the negative pressure side, the speed of the negative pressure side of the leading edge where the wind easily flows is increased, as shown in Table 1 ,, the number of revolutions becomes smaller, and the squeak value becomes smaller, as shown in Table 11. The static pressure can also obtain the same number of revolutions of the sirocco fan IX on the negative pressure side of the leading edge and the highest static pressure at the same air volume, and the effect of easy flow of the wind can be obtained by cutting off the negative pressure side of the leading edge. Table 11 Static Pressure Xiluo Fan IX at llOOrpm and Air Volume 8mVmin XI Siluo Fan Static Pressure Pa 61.3 60.2 [Simplified Schematic] FIG. 1 is an air conditioner equipped with a sirocco fan in the first embodiment of the present invention. A schematic plan view (a) and a side view (b) of the internal configuration of the indoor unit of the apparatus. Fig. 2 is an explanatory view showing parameters of the shape of the fin of the sirocco fan of the first embodiment. Fig. 3 is a view showing the shape of a fin of a sirocco fan of the first embodiment. Fig. 4 is a view showing a comparison of the shape of the fin of the sirocco fan of the first embodiment and the shape of the conventional fin. Fig. 5 is a view showing the shape of the fin of the sirocco fan of the first and second embodiments 13 2148-9540-pF; FIG. 6 is a view showing the distribution of the embodiment. Fig. 7 is a view showing an implementation type distribution. [Main component symbol description] 1 ~ West Loco fan, 3 ~ heat exchanger; 5 ~ blowout; 7 ~ shaft; 9 ~ curve; 11 ~ straight line (chord length L); 1 3 ~ inner circumference wiring; 15 ~ peripheral wiring; relative speed of the sirocco fan in the relative speed of the siro fan fan ~ fan motor; 4 ~. And inlet; 6 ~ scroll; 8 ~ wing; 10 ~ indoor unit; 12 ~ vertical line; 14 ~ curve wiring; 16 ~ curve wiring. 2148-9540-PF; Chentf

Claims (1)

1352779 第〇9711〇々26號 100年7月7叫正替換頁 十、申請專利範圍： 1.—種西洛可風扇，包括： 一渦管； 複數個向前的翼片，排列成圓筒狀並 該渦管内，盆中告s芹古^ 4 轉地配置於 , 〃中田風扇直㈣D、最大曲線高度為H、置贫 長為L、X内周側前緣的圓弧部的半徑$卜入' 出 口角為心時，（MkH/I^0.26'R/I^〇 ii m、 β 130° ' 26°^ /5 32° 〇 "1352779 Dijon 9711〇々26号 100 July 7th is called the replacement page. Ten, the scope of application for patents: 1. - The type of siro fan, including: a scroll; a plurality of forward fins, arranged in a cylinder In the shape of the vortex tube, the basin is singed in the celestial body. The 风扇 田 风扇 ^ 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4卜入' When the exit angle is the heart, (MkH/I^0.26'R/I^〇ii m, β 130° ' 26°^ /5 32° 〇" 之西洛可風扇，其中翼 ，翼片的負壓面側削除 2.如申请專利乾圍第1項所述 内周側前緣的形狀為略呈半圓弧形 成大略呈直線的形狀。 3. —種空調裝置 的西洛可風扇。 包括申請專利範圍第 1或2項所述The sirocco fan, wherein the wing and the negative pressure side of the fin are removed. 2. The inner peripheral side leading edge of the first aspect of the patented dry circumference has a slightly semicircular arc shape and a substantially straight shape. 3. The sirocco fan of the air conditioner. Including the application of patent scope 1 or 2 2148-9540-PFl;Chentf 15 1352779 ^097110726¾ 100年7月7日修正替換頁2148-9540-PFl; Chentf 15 1352779 ^0971107263⁄4 Revised replacement page on July 7, 100 旋轉方向^— 第2圖Direction of rotation ^ - Figure 2 外周側Peripheral side 第3圖Figure 3
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