TWI681130B - Fan shell and fan wheel combination structure and fan shell - Google Patents

Fan shell and fan wheel combination structure and fan shell Download PDF

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Publication number
TWI681130B
TWI681130B TW107142021A TW107142021A TWI681130B TW I681130 B TWI681130 B TW I681130B TW 107142021 A TW107142021 A TW 107142021A TW 107142021 A TW107142021 A TW 107142021A TW I681130 B TWI681130 B TW I681130B
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Taiwan
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fan
fan wheel
noise reduction
casing
combined structure
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TW107142021A
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Chinese (zh)
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TW202020315A (en
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洪銀樹
林子軒
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建準電機工業股份有限公司
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Priority to TW107142021A priority Critical patent/TWI681130B/en
Priority to CN201910010887.5A priority patent/CN111219363B/en
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Publication of TW202020315A publication Critical patent/TW202020315A/en

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/283—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 rotors of the squirrel-cage type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本發明係關於一種風扇殼體與扇輪組合結構及其風扇殼體。所述風扇殼體與扇輪組合結構包括一第一殼體、一扇輪以及一第二殼體。該第一殼體具有一軸管部。該扇輪樞設於該第一殼體之該軸管部。該扇輪包括複數個葉片，該等葉片呈環狀間隔排列。該第二殼體結合於該第一殼體。該第二殼體具有一通風孔及一降噪內環面。該通風孔對應該軸管部。該降噪內環面環繞該通風孔，且該降噪內環面對應該等葉片。The invention relates to a combined structure of a fan casing and a fan wheel and a fan casing thereof. The combined structure of the fan casing and the fan wheel includes a first casing, a fan wheel and a second casing. The first housing has a shaft tube portion. The fan wheel is pivotally disposed on the shaft tube portion of the first housing. The fan wheel includes a plurality of blades, which are arranged in an annular interval. The second casing is coupled to the first casing. The second casing has a vent hole and a noise reduction inner ring surface. The vent hole corresponds to the shaft tube portion. The noise reduction inner ring surface surrounds the ventilation hole, and the noise reduction inner ring surface should wait for the blade.

Description

風扇殼體與扇輪組合結構及其風扇殼體Fan shell and fan wheel combination structure and fan shell

本發明係關於一種風扇殼體與扇輪組合結構及其風扇殼體。The invention relates to a combined structure of a fan casing and a fan wheel and a fan casing thereof.

為降低風扇運轉過程中產生的噪音，習知技術已有提出利用減低風扇運轉震動的方式來降低噪音。然而，風扇運轉中之噪音來源並非只有震動因素，風扇殼體與扇輪之間的結構組合不佳，造成扇輪周邊風壓過大，亦會使得風扇在運轉過程中產生噪音。In order to reduce the noise generated during the operation of the fan, the conventional technology has proposed to reduce the noise by reducing the vibration of the fan during operation. However, the source of noise during fan operation is not only the vibration factor. The poor structural combination between the fan casing and the fan wheel results in excessive wind pressure around the fan wheel, which also causes the fan to generate noise during operation.

因此，有必要提供一創新且具進步性之風扇殼體與扇輪組合結構及其風扇殼體，以解決上述問題。Therefore, it is necessary to provide an innovative and progressive fan casing and fan wheel combination structure and its fan casing to solve the above problems.

在一實施例中，一種風扇殼體與扇輪組合結構包括一第一殼體、一扇輪以及一第二殼體。該第一殼體具有一軸管部。該扇輪樞設於該第一殼體之該軸管部。該扇輪包括複數個葉片，該等葉片呈環狀間隔排列。該第二殼體結合於該第一殼體。該第二殼體具有一通風孔及一降噪內環面。該通風孔對應該軸管部。該降噪內環面環繞該通風孔，且該降噪內環面對應該等葉片。In an embodiment, a combined structure of a fan case and a fan wheel includes a first case, a fan wheel, and a second case. The first housing has a shaft tube portion. The fan wheel is pivotally disposed on the shaft tube portion of the first housing. The fan wheel includes a plurality of blades, which are arranged in an annular interval. The second casing is coupled to the first casing. The second casing has a vent hole and a noise reduction inner ring surface. The vent hole corresponds to the shaft tube portion. The noise reduction inner ring surface surrounds the ventilation hole, and the noise reduction inner ring surface should wait for the blade.

在一實施例中，一種風扇殼體包括一第一殼體及一第二殼體。該第一殼體具有一軸管部。該第二殼體結合於該第一殼體。該第二殼體具有一通風孔及一降噪內環面。該通風孔對應該軸管部。該降噪內環面環繞該通風孔。In an embodiment, a fan casing includes a first casing and a second casing. The first housing has a shaft tube portion. The second casing is coupled to the first casing. The second casing has a vent hole and a noise reduction inner ring surface. The vent hole corresponds to the shaft tube portion. The noise reduction inner annular surface surrounds the ventilation hole.

圖1顯示本發明風扇殼體與扇輪組合結構之立體分解圖。圖2顯示本發明風扇殼體與扇輪組合結構於不同視角（與圖1相反之視角）之立體分解圖。圖3顯示本發明風扇殼體與扇輪組合結構之立體組合圖。配合參閱圖1、圖2及圖3，本發明之風扇殼體與扇輪組合結構1包括一第一殼體10、一扇輪20以及一第二殼體30。在本實施例中，該第一殼體10及該第二殼體30係組成一風扇殼體。FIG. 1 shows an exploded perspective view of the combined structure of the fan casing and the fan wheel of the present invention. FIG. 2 shows an exploded perspective view of the combined structure of the fan casing and the fan wheel of the present invention from different perspectives (opposite perspective from FIG. 1 ). FIG. 3 shows a perspective assembly view of the combined structure of the fan casing and the fan wheel of the present invention. Referring to FIG. 1, FIG. 2 and FIG. 3, the fan casing and fan wheel combination structure 1 of the present invention includes a first casing 10, a fan wheel 20 and a second casing 30. In this embodiment, the first casing 10 and the second casing 30 form a fan casing.

該第一殼體10具有一軸管部11及一容置槽12。該軸管部11位於該容置槽12內。The first housing 10 has a shaft tube portion 11 and a receiving groove 12. The shaft tube portion 11 is located in the accommodating groove 12.

圖4顯示本發明風扇殼體與扇輪組合結構(靜音環面與降噪內環面為斜面)沿圖3的C-C線之剖視圖。圖5顯示本發明扇輪之側視圖。配合參閱圖1、圖4及圖5，該扇輪20樞設於該第一殼體10之該軸管部11，且該扇輪20包括複數個葉片21。FIG. 4 shows a cross-sectional view of the combined structure of the fan casing and the fan wheel of the present invention (the mute ring surface and the noise reduction inner ring surface are inclined surfaces) along the line C-C of FIG. Figure 5 shows a side view of the fan wheel of the present invention. Referring to FIG. 1, FIG. 4 and FIG. 5, the fan wheel 20 is pivotally disposed on the shaft tube portion 11 of the first housing 10, and the fan wheel 20 includes a plurality of blades 21.

該等葉片21呈環狀間隔排列，且各該葉片21具有一外側緣21S。The blades 21 are arranged in an annular interval, and each blade 21 has an outer edge 21S.

在本實施例中，該扇輪20另包括一端部連接環22，該端部連接環22連接該等葉片21，且該端部連接環22具有一靜音環面22S。In this embodiment, the fan wheel 20 further includes an end connecting ring 22, the end connecting ring 22 connects the blades 21, and the end connecting ring 22 has a silent ring surface 22S.

圖6顯示本發明扇輪之剖視圖。配合參閱圖4、圖5及圖6，在本實施例中，該靜音環面22S係為斜面，且該靜音環面22S係朝該端部連接環22之中心方向往上傾斜。此外，該靜音環面22S與各該葉片21之外側緣21S之間具有一鈍角θ，較佳地，該鈍角θ為大於90°小於130°，以使該靜音環面22S能有效降低該扇輪20旋轉時之周邊氣流阻力及風壓。6 shows a cross-sectional view of the fan wheel of the present invention. Referring to FIG. 4, FIG. 5 and FIG. 6, in this embodiment, the mute ring surface 22S is an inclined surface, and the mute ring surface 22S is inclined upward toward the center of the end connecting ring 22. In addition, there is an obtuse angle θ between the silent torus 22S and the outer edge 21S of each blade 21, preferably, the obtuse angle θ is greater than 90° and less than 130°, so that the silent torus 22S can effectively reduce the fan The peripheral airflow resistance and wind pressure when the wheel 20 rotates.

參閱圖7，其係顯示本發明另一實施例風扇殼體與扇輪組合結構(靜音環面與降噪內環面為弧面)之剖視圖。在另一實施例中，該靜音環面22S亦可為弧面，同樣可降低該扇輪20旋轉時之周邊氣流阻力及風壓。在一實施例中，各該葉片21可具有一頂部斜面或一頂部弧面，該頂部斜面或該頂部弧面可取代靜音環面，如此可省略製作該端部連接環。Referring to FIG. 7, it is a cross-sectional view showing a combined structure of a fan casing and a fan wheel according to another embodiment of the present invention (the mute ring surface and the noise reduction inner ring surface are arc surfaces). In another embodiment, the silent ring surface 22S can also be a curved surface, which can also reduce the peripheral airflow resistance and wind pressure when the fan wheel 20 rotates. In an embodiment, each of the blades 21 may have a top inclined surface or a top curved surface. The top inclined surface or the top curved surface may replace the mute torus, so that the end connecting ring may be omitted.

再參閱圖1、圖2及圖4，在本實施例中，該扇輪20另包括一轂座23，該轂座23係樞設於該軸管部11。此外，該等葉片21係環設於該轂座23之外圍，且該等葉片21係連接該轂座23。Referring again to FIGS. 1, 2 and 4, in this embodiment, the fan wheel 20 further includes a hub seat 23, and the hub seat 23 is pivotally disposed on the shaft tube portion 11. In addition, the blades 21 are looped around the hub 23, and the blades 21 are connected to the hub 23.

圖8顯示本發明第二殼體之剖視圖。配合參閱圖2、圖4及圖8，該第二殼體30結合於該第一殼體10。在本實施例中，該第二殼體30具有一容置槽30C、一內頂面30F、一通風孔30H及一降噪內環面30S。該通風孔30H連通該容置槽30C，且該通風孔30H對應該軸管部11。該內頂面30F與該降噪內環面30S位於該容置槽30C內，該降噪內環面30S連接該內頂面30F，且該降噪內環面30S環繞該通風孔30H。8 shows a cross-sectional view of the second housing of the present invention. Referring to FIG. 2, FIG. 4 and FIG. 8, the second housing 30 is combined with the first housing 10. In this embodiment, the second housing 30 has an accommodating groove 30C, an inner top surface 30F, a vent hole 30H, and a noise reduction inner ring surface 30S. The vent hole 30H communicates with the accommodating groove 30C, and the vent hole 30H corresponds to the shaft tube portion 11. The inner top surface 30F and the noise reduction inner ring surface 30S are located in the accommodating groove 30C, the noise reduction inner ring surface 30S is connected to the inner top surface 30F, and the noise reduction inner ring surface 30S surrounds the vent hole 30H.

此外，該降噪內環面30S對應該等葉片21及該端部連接環22之該靜音環面22S，且該降噪內環面30S與該靜音環面22S之間具有一靜音間隙G，較佳地，該靜音間隙G係朝該通風孔30H之方向呈漸擴狀，以降低該扇輪20與該第二殼體30之間的風壓，進而消除因風壓產生之噪音。In addition, the noise reduction inner ring surface 30S corresponds to the blade 21 and the silent ring surface 22S of the end connecting ring 22, and there is a silent gap G between the noise reduction inner ring surface 30S and the silent ring surface 22S, Preferably, the silent gap G is gradually expanded toward the ventilation hole 30H, so as to reduce the wind pressure between the fan wheel 20 and the second housing 30, thereby eliminating the noise generated by the wind pressure.

再參閱圖4、圖6及圖8，為快速降低該扇輪20與該第二殼體30之間的風壓，較佳地，該降噪內環面30S之寬度W2係大於該靜音環面22S之寬度W1，該靜音環面22S位於該降噪內環面30S之向下投影範圍內，且該降噪內環面30S之斜率大於或等於該靜音環面22S之斜率。4, 6 and 8, in order to quickly reduce the wind pressure between the fan wheel 20 and the second housing 30, preferably, the width W2 of the noise reduction inner ring surface 30S is larger than the mute ring The width W1 of the surface 22S, the mute ring surface 22S is located in the downward projection range of the noise reduction inner ring surface 30S, and the slope of the noise reduction inner ring surface 30S is greater than or equal to the slope of the mute ring surface 22S.

在本實施例中，該降噪內環面30S係為斜面，且該降噪內環面30S係朝該通風孔30H之方向往上傾斜。此外，該降噪內環面30S與該內頂面30F之間具有一優角θr，較佳地，該優角θr為大於180°小於240°，以使該降噪內環面30S能配合該靜音環面22S降低該扇輪20旋轉時之周邊氣流阻力及風壓。In this embodiment, the noise reduction inner annular surface 30S is a slanted surface, and the noise reduction inner annular surface 30S is inclined upward toward the direction of the ventilation hole 30H. In addition, there is an excellent angle θr between the noise reduction inner annular surface 30S and the inner top surface 30F, preferably, the excellent angle θr is greater than 180° and less than 240°, so that the noise reduction inner annular surface 30S can cooperate The mute torus 22S reduces the peripheral airflow resistance and wind pressure when the fan wheel 20 rotates.

再參閱圖7，在另一實施例中，該降噪內環面30S亦可為弧面，同樣可配合該靜音環面22S降低該扇輪20旋轉時之周邊氣流阻力及風壓。Referring to FIG. 7 again, in another embodiment, the noise-reducing inner annular surface 30S can also be a curved surface, and can also cooperate with the silent annular surface 22S to reduce the peripheral airflow resistance and wind pressure when the fan wheel 20 rotates.

圖9顯示本發明第二殼體之降噪內環面具有波浪結構之示意圖。配合參閱圖4及圖9，在一實施例中，該第二殼體30之該降噪內環面30S可具有複數個波浪結構30W，該等波浪結構30W可用以導引該扇輪20旋轉時之周邊氣流。FIG. 9 shows a schematic view of the noise reduction inner ring surface of the second shell of the present invention having a wave structure. With reference to FIGS. 4 and 9, in one embodiment, the noise reduction inner annular surface 30S of the second housing 30 may have a plurality of wave structures 30W, and the wave structures 30W may be used to guide the rotation of the fan wheel 20 Time surrounding airflow.

圖10顯示本發明第二殼體之降噪內環面具有條狀結構之示意圖。配合參閱圖4及圖10，在一實施例中，該第二殼體30之該降噪內環面30S可具有複數個條狀結構30V，該等條狀結構30V可用以導引該扇輪20旋轉時之周邊氣流。FIG. 10 shows a schematic diagram of the noise reduction inner ring surface of the second casing of the present invention having a strip structure. With reference to FIGS. 4 and 10, in one embodiment, the noise reduction inner annular surface 30S of the second housing 30 may have a plurality of strip structures 30V, and the strip structures 30V may be used to guide the fan wheel 20 Peripheral airflow when rotating.

在另一實施例中，該第二殼體30之該降噪內環面30S亦可具有複數個凹狀結構（如高爾夫球表面結構）或複數個凸狀結構（如釋迦果表面結構），該等凹狀結構或該等凸狀結構同樣可用以導引該扇輪20旋轉時之周邊氣流。In another embodiment, the noise-reducing inner annular surface 30S of the second housing 30 may also have a plurality of concave structures (such as a golf ball surface structure) or a plurality of convex structures (such as a Sakyamuni surface structure), The concave structures or the convex structures can also be used to guide the peripheral airflow when the fan wheel 20 rotates.

藉由上述結構配置，本發明之風扇殼體與扇輪組合結構1可降低該扇輪20與該第二殼體30之間的風壓，進而消除因風壓產生之噪音，達到靜音之效果。With the above configuration, the fan housing and fan wheel combination structure 1 of the present invention can reduce the wind pressure between the fan wheel 20 and the second housing 30, thereby eliminating the noise generated by the wind pressure and achieving the effect of silence .

上述實施例僅為說明本發明之原理及其功效，並非限制本發明，因此習於此技術之人士對上述實施例進行修改及變化仍不脫本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。The above-mentioned embodiments are only to illustrate the principles and effects of the present invention, but not to limit the present invention. Therefore, those skilled in the art may modify and change the above embodiments without departing from the spirit of the present invention. The scope of the rights of the present invention shall be as listed in the patent application scope described later.

1‧‧‧風扇殼體與扇輪組合結構1‧‧‧Combined structure of fan shell and fan wheel

10‧‧‧第一殼體10‧‧‧First shell

11‧‧‧軸管部11‧‧‧Shaft and Tube Department

12‧‧‧容置槽12‧‧‧Accommodation slot

20‧‧‧扇輪20‧‧‧fan wheel

21‧‧‧葉片21‧‧‧blade

21S‧‧‧外側緣21S‧‧‧Outer edge

22‧‧‧端部連接環22‧‧‧End connection ring

22S‧‧‧靜音環面22S‧‧‧silent torus

23‧‧‧轂座23‧‧‧ Hub seat

30‧‧‧第二殼體30‧‧‧Second shell

30C‧‧‧容置槽30C‧‧‧Accommodation slot

30F‧‧‧內頂面30F‧‧‧Inner top surface

30H‧‧‧通風孔30H‧‧‧Ventilation hole

30S‧‧‧降噪內環面30S‧‧‧noise reduction inner ring

30V‧‧‧條狀結構30V‧‧‧Structure

30W‧‧‧波浪結構30W‧‧‧Wave structure

G‧‧‧靜音間隙G‧‧‧ Silent gap

W1‧‧‧靜音環面之寬度W1‧‧‧Width of mute torus

W2‧‧‧降噪內環面之寬度W2‧‧‧Width of noise reduction inner ring

θ‧‧‧鈍角θ‧‧‧obtuse angle

θr‧‧‧優角θr‧‧‧Excellent angle

圖1顯示本發明風扇殼體與扇輪組合結構之立體分解圖。FIG. 1 shows an exploded perspective view of the combined structure of the fan casing and the fan wheel of the present invention.

圖2顯示本發明風扇殼體與扇輪組合結構於不同視角（與圖1相反之視角）之立體分解圖。FIG. 2 shows an exploded perspective view of the combined structure of the fan casing and the fan wheel of the present invention from different perspectives (opposite perspective from FIG. 1 ).

圖3顯示本發明風扇殼體與扇輪組合結構之立體組合圖。FIG. 3 shows a perspective assembly view of the combined structure of the fan casing and the fan wheel of the present invention.

圖4顯示本發明風扇殼體與扇輪組合結構(靜音環面與降噪內環面為斜面)沿圖3的C-C線之剖視圖。FIG. 4 shows a cross-sectional view of the combined structure of the fan casing and the fan wheel of the present invention (the mute ring surface and the noise reduction inner ring surface are inclined surfaces) along the line C-C of FIG.

圖5顯示本發明扇輪之側視圖。Figure 5 shows a side view of the fan wheel of the present invention.

圖6顯示本發明扇輪之剖視圖。6 shows a cross-sectional view of the fan wheel of the present invention.

圖7顯示本發明另一實施例風扇殼體與扇輪組合結構(靜音環面與降噪內環面為弧面)之剖視圖。7 shows a cross-sectional view of the combined structure of a fan casing and a fan wheel according to another embodiment of the present invention (the silent ring surface and the noise reduction inner ring surface are arc surfaces).

圖8顯示本發明第二殼體之剖視圖。8 shows a cross-sectional view of the second housing of the present invention.

圖9顯示本發明第二殼體之降噪內環面具有波浪結構之示意圖。FIG. 9 shows a schematic view of the noise reduction inner ring surface of the second shell of the present invention having a wave structure.

圖10顯示本發明第二殼體之降噪內環面具有條狀結構之示意圖。FIG. 10 shows a schematic diagram of the noise reduction inner ring surface of the second casing of the present invention having a strip structure.

1‧‧‧風扇殼體與扇輪組合結構 1‧‧‧Combined structure of fan shell and fan wheel

10‧‧‧第一殼體 10‧‧‧First shell

11‧‧‧軸管部 11‧‧‧Shaft and Tube Department

12‧‧‧容置槽 12‧‧‧Accommodation slot

20‧‧‧扇輪 20‧‧‧fan wheel

21‧‧‧葉片 21‧‧‧blade

21S‧‧‧外側緣 21S‧‧‧Outer edge

22‧‧‧端部連接環 22‧‧‧End connection ring

22S‧‧‧靜音環面 22S‧‧‧silent torus

23‧‧‧轂座 23‧‧‧ Hub seat

30‧‧‧第二殼體 30‧‧‧Second shell

30C‧‧‧容置槽 30C‧‧‧Accommodation slot

30F‧‧‧內頂面 30F‧‧‧Inner top surface

30H‧‧‧通風孔 30H‧‧‧Ventilation hole

30S‧‧‧降噪內環面 30S‧‧‧noise reduction inner ring

G‧‧‧靜音間隙 G‧‧‧ Silent gap

W1‧‧‧靜音環面之寬度 W1‧‧‧Width of mute torus

W2‧‧‧降噪內環面之寬度 W2‧‧‧Width of noise reduction inner ring

Claims (18)

一種風扇殼體與扇輪組合結構，包括：一第一殼體，具有一軸管部；一扇輪，樞設於該第一殼體之該軸管部，該扇輪包括複數個葉片及一端部連接環，該等葉片呈環狀間隔排列，該端部連接環連接該等葉片，且該端部連接環具有一靜音環面；以及一第二殼體，結合於該第一殼體，該第二殼體具有一通風孔及一降噪內環面，該通風孔對應該軸管部，該降噪內環面環繞該通風孔，且該降噪內環面對應該等葉片及該端部連接環之該靜音環面，該降噪內環面與該靜音環面之間具有一靜音間隙，該靜音間隙係朝該通風孔之方向呈漸擴狀。 A combined structure of fan casing and fan wheel includes: a first casing with a shaft tube portion; a fan wheel pivotally arranged on the shaft tube portion of the first casing, the fan wheel including a plurality of blades and one end A connecting ring, the blades are arranged in a ring-shaped interval, the end connecting ring connects the blades, and the end connecting ring has a silent torus; and a second housing, combined with the first housing, The second shell has a ventilation hole and a noise reduction inner ring surface, the ventilation hole corresponds to the shaft tube portion, the noise reduction inner ring surface surrounds the ventilation hole, and the noise reduction inner ring surface should wait for the blade and the The mute torus of the ring connected at the end has a mute gap between the noise reduction inner torus and the mute torus, and the mute gap is gradually expanded toward the direction of the vent hole. 如請求項1之風扇殼體與扇輪組合結構，其中各該葉片具有一外側緣，該靜音環面與各該葉片之外側緣之間具有一鈍角。 According to the combined structure of the fan casing and the fan wheel of claim 1, each of the blades has an outer edge, and there is an obtuse angle between the silent torus and the outer edge of each blade. 如請求項2之風扇殼體與扇輪組合結構，其中該鈍角為大於90°小於130°。 As in the combined structure of the fan casing and the fan wheel of claim 2, the obtuse angle is greater than 90° and less than 130°. 如請求項1之風扇殼體與扇輪組合結構，其中該靜音環面係為斜面。 As in the combined structure of the fan casing and the fan wheel of claim 1, the silent torus is inclined. 如請求項1之風扇殼體與扇輪組合結構，其中該靜音環面係為弧面。 As in the combined structure of the fan casing and the fan wheel of claim 1, the silent torus is a curved surface. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面係為斜面。 As in the combined structure of the fan casing and the fan wheel of claim 1, wherein the noise reduction inner ring surface is a slanted surface. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面係為弧面。 As in the combined structure of the fan case and the fan wheel of claim 1, wherein the noise reduction inner ring surface is a curved surface. 如請求項1之風扇殼體與扇輪組合結構，其中該第二殼體具有一內頂面，該降噪內環面連接該內頂面，且該降噪內環面與該內頂面之間具有一優角。 The combined structure of a fan casing and a fan wheel according to claim 1, wherein the second casing has an inner top surface, the noise reduction inner ring surface is connected to the inner top surface, and the noise reduction inner ring surface and the inner top surface There is a good angle between. 如請求項8之風扇殼體與扇輪組合結構，其中該優角為大於180°小於240°。 The combined structure of the fan casing and the fan wheel according to claim 8, wherein the excellent angle is greater than 180° and less than 240°. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面之寬度大於該靜音環面之寬度。 As in the combined structure of the fan casing and the fan wheel of claim 1, wherein the width of the noise reduction inner ring surface is greater than the width of the silent ring surface. 如請求項1之風扇殼體與扇輪組合結構，其中該靜音環面位於該降噪內環面之向下投影範圍內。 As in the combined structure of the fan casing and the fan wheel of claim 1, wherein the silent torus is located in the downward projection range of the noise reduction inner torus. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面之斜率大於或等於該靜音環面之斜率。 As in the combined structure of the fan casing and the fan wheel of claim 1, wherein the slope of the noise reduction inner torus is greater than or equal to the slope of the silent torus. 如請求項1之風扇殼體與扇輪組合結構，其中該靜音環面係朝該端部 連接環之中心方向往上傾斜。 According to the combined structure of fan casing and fan wheel of claim 1, wherein the mute torus faces the end The center of the connecting ring is inclined upwards. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面係朝該通風孔之方向往上傾斜。 As in the combined structure of the fan casing and the fan wheel of claim 1, wherein the noise reduction inner ring surface is inclined upward toward the direction of the ventilation hole. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面具有複數個波浪結構。 The combined structure of the fan casing and the fan wheel according to claim 1, wherein the noise reduction inner ring surface has a plurality of wave structures. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面具有複數個條狀結構。 The combined structure of the fan casing and the fan wheel of claim 1, wherein the noise reduction inner ring surface has a plurality of strip-shaped structures. 如請求項1之風扇殼體與扇輪組合結構，其中該降噪內環面具有複數個凹狀結構或複數個凸狀結構。 The combined structure of the fan casing and the fan wheel of claim 1, wherein the noise reduction inner ring surface has a plurality of concave structures or a plurality of convex structures. 如請求項1之風扇殼體與扇輪組合結構，其中該扇輪另包括一轂座，該等葉片環設於該轂座之外圍，且該等葉片連接該轂座。 The combined structure of the fan casing and the fan wheel according to claim 1, wherein the fan wheel further includes a hub seat, the blade rings are provided on the periphery of the hub seat, and the blades are connected to the hub seat.
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