TWI681127B - Centrifugal fan and impeller thereof - Google Patents
Centrifugal fan and impeller thereof Download PDFInfo
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- TWI681127B TWI681127B TW107103656A TW107103656A TWI681127B TW I681127 B TWI681127 B TW I681127B TW 107103656 A TW107103656 A TW 107103656A TW 107103656 A TW107103656 A TW 107103656A TW I681127 B TWI681127 B TW I681127B
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
本發明係關於一種離心扇及其扇輪,尤其是一種無外框而可直接組裝在如冷凍櫃或冰箱等系統中的離心扇及其扇輪。 The invention relates to a centrifugal fan and its fan wheel, in particular to a centrifugal fan and its fan wheel that can be directly assembled in a system such as a freezer or refrigerator without a frame.
請參照第1、2圖,其係一種習知的離心扇9,該習知的離心扇9具有一基座91、一扇輪92及一定子組93,該基座91具有一中柱911,該扇輪92具有一轉軸921連接一輪轂922,該轉軸921可旋轉地設於該中柱911,數個扇葉923分別由一端連接該輪轂922的外表面,該定子組93設於該中柱911的外周。該習知的離心扇9可直接將該基座91組裝定位在如冷凍櫃或冰箱等系統中,以藉由該扇輪92的旋轉,帶動氣流從系統殼體上所開設的入風口流入系統內部,再從系統殼體上所開設的出風口排出至外界。類似於該習知離心扇9的數個實施例已揭露於中華民國公開第200838396號、公告第I530777號及第I529309號等專利案當中。
Please refer to FIG. 1 and FIG. 2, which is a conventional
然而,由於該習知離心扇9的各該扇葉923頂緣都與該輪轂922的頂緣同高,或是低於該輪轂922的頂緣,使得氣流進入該扇輪92的旋轉範圍後,首先會衝向該輪轂922的頂緣,才被該數個扇葉923所擾動而流向側端;據此,該習知離心扇9的運作噪音一直以來都有難以降低的瓶頸。此外,經實驗發現,不僅僅是氣流衝向該輪轂922頂緣的問題,該扇輪92中除了該轉軸921以外的其他構件型態及尺寸比例,也都會對運作噪音造成不同程度的影響。
However, since the top edge of each
有鑑於此,習知的離心扇確實仍有加以改善之必要。 In view of this, the conventional centrifugal fan does still need to be improved.
為解決上述問題,本發明之目的係提供一種離心扇及其扇輪,可提升氣流的流動順暢度,以降低運作噪音。 In order to solve the above problems, the object of the present invention is to provide a centrifugal fan and its fan wheel, which can improve the smoothness of the air flow and reduce the operation noise.
本發明以下所述方向性或其近似用語,例如「前」、「後」、「上(頂)」、「下(底)」、「內」、「外」、「側面」等,主要係參考附加圖式的方向,各方向性或其近似用語僅用以輔助說明及理解本發明的各實施例,非用以限制本發明。 The following directivity or similar terms of the present invention, such as "front", "rear", "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., mainly With reference to the directions of the attached drawings, each directivity or its approximate terms are only used to help explain and understand the embodiments of the present invention, and are not intended to limit the present invention.
本發明的離心扇,包含:一基座,該基座具有一軸管;一定子組,該定子組設於該軸管的外周;及一扇輪,該扇輪具有一轉軸及一連接環,該轉軸連接一輪轂,該轉軸可旋轉地設於該軸管,數個扇葉環設於該輪轂的外周,該連接環連接該數個扇葉,該連接環具有數個肋條以形成有數個配重槽;其中,各該扇葉具有一最高頂緣,各該最高頂緣高出該輪轂的頂緣;該數個扇葉的外緣形成一最大外徑,該輪轂的外徑與該最大外徑的比值大於0.4且小於或等於0.5。 The centrifugal fan of the present invention includes: a base with a shaft tube; a certain subgroup, the stator group is disposed on the outer periphery of the shaft tube; and a fan wheel with a rotating shaft and a connecting ring, The rotating shaft is connected with a hub, the rotating shaft is rotatably provided on the shaft tube, a plurality of fan blade rings are provided on the outer periphery of the hub, the connecting ring is connected with the several fan blades, the connecting ring has a plurality of ribs to form a plurality of Counterweight groove; wherein, each of the blades has a highest top edge, each of the highest top edges is higher than the top edge of the hub; the outer edges of the several blades form a maximum outer diameter, the outer diameter of the hub and the The ratio of the maximum outer diameter is greater than 0.4 and less than or equal to 0.5.
據此,本發明的離心扇,可藉由使各扇葉的最高頂緣高出輪轂的頂緣,以及使扇輪中除了轉軸以外的其他構件維持特定型態及尺寸比例,從而提升該離心扇運作時導引氣流流動的順暢度,有效達到降低運作噪音等功效。 According to this, the centrifugal fan of the present invention can improve the centrifuge by making the highest top edge of each blade higher than the top edge of the hub and maintaining the specific shape and size ratio of other components in the fan wheel except the rotating shaft When the fan is in operation, the smoothness of the air flow is guided, which effectively reduces the operating noise.
其中,該輪轂具有一軸向延伸部,所述該輪轂的外徑為該軸向延伸部的外徑。如此,該輪轂的結構簡易而可便於製造及組裝,具有降低製造成本及提升組裝便利性等功效。 Wherein, the hub has an axial extension, and the outer diameter of the hub is the outer diameter of the axial extension. In this way, the structure of the hub is simple and easy to manufacture and assemble, which has the effects of reducing manufacturing costs and improving assembly convenience.
其中,在該轉軸的軸向上,該輪轂的頂緣與各該扇葉的最高頂緣相距一軸向間距,各該扇葉具有一最大軸向高度,該軸向間距不大於該最大軸向高度的二分之一。如此,可具有更佳的導引氣流及降低運作噪 音等效果。 Wherein, in the axial direction of the rotating shaft, the top edge of the hub is separated from the highest top edge of each blade by an axial distance, each blade has a maximum axial height, and the axial distance is not greater than the maximum axial Half of the height. In this way, it can have better guided air flow and reduce operating noise Sound effects.
其中,該扇輪具有一延伸盤,該延伸盤連接該輪轂並沿該轉軸的徑向朝外延伸,該數個扇葉的底緣連接該延伸盤,該連接環與該延伸盤相間隔。如此,具有穩固該數個扇葉等功效。 Wherein, the fan wheel has an extension disk, the extension disk is connected to the hub and extends outward in the radial direction of the rotating shaft, the bottom edges of the blades are connected to the extension disk, and the connecting ring is spaced from the extension disk. In this way, it has the effect of stabilizing the several fan blades.
其中,在該轉軸的徑向上,該數個扇葉的最大外徑小於或等於該連接環的外徑。如此,可使各該扇葉的外緣不凸出該連接環,具有避免該連接環影響到各該扇葉的導風效果等功效。 Wherein, in the radial direction of the rotating shaft, the maximum outer diameter of the blades is less than or equal to the outer diameter of the connecting ring. In this way, the outer edge of each fan blade does not protrude from the connecting ring, which has the effect of preventing the connecting ring from affecting the wind guiding effect of each fan blade.
其中,該數個扇葉及該連接環一體成型相連接,該連接環的內徑大於或等於該數個扇葉底緣的外徑。如此,具有提升製造便利性並確保成品可順利離模等功效。 Wherein, the several fan blades and the connecting ring are integrally formed and connected, and the inner diameter of the connecting ring is greater than or equal to the outer diameter of the bottom edges of the several fan blades. In this way, it has the functions of enhancing manufacturing convenience and ensuring that the finished product can be smoothly released from the mold.
其中,該連接環的內周面連接於該數個扇葉的外緣。如此,可確保該連接環之設置不會影響進風。 Wherein, the inner circumferential surface of the connecting ring is connected to the outer edges of the several blades. In this way, it can be ensured that the setting of the connecting ring does not affect the air intake.
其中,該基座具有一基板,該軸管設於該基板,該基板具有相對的一上表面及一下表面,該基板軸向對應於該扇輪的範圍內呈封閉狀,使該上表面與該下表面不連通。如此,可減少不必要的氣流流失及擾流現象,具有提升氣流順暢度及降低運作噪音等功效。 Wherein, the base has a base plate, and the shaft tube is provided on the base plate. The base plate has an upper surface and a lower surface opposite to each other. The base plate is closed within the range corresponding to the fan wheel, so that the upper surface is The lower surface is not connected. In this way, unnecessary air loss and turbulence phenomena can be reduced, which has the effects of improving the smoothness of the air flow and reducing operating noise.
其中,該基座具有一基板,該軸管設於該基板,該基座在該基板的周緣設有數個凸耳,各該凸耳設有一定位孔,各該凸耳結合有一彈性墊,該彈性墊包覆該凸耳的上、下表面且不完全遮蔽該定位孔。如此,可利用鎖固件將該基座組裝定位在系統殼體中的預定位置,並由該彈性墊貼接該系統殼體以吸收震動,具有改善震動噪音等功效。 Wherein, the base has a base plate, the shaft tube is provided on the base plate, the base is provided with a plurality of lugs on the periphery of the base plate, each lug is provided with a positioning hole, and each lug is combined with an elastic pad, the The elastic pad covers the upper and lower surfaces of the lug and does not completely cover the positioning hole. In this way, the base can be assembled and positioned at a predetermined position in the system housing by using a fastener, and the elastic pad can be attached to the system housing to absorb vibration and improve vibration noise.
本發明另提供一種離心扇的扇輪,包含:一轉軸;一輪轂,該輪轂連接該轉軸;數個扇葉,該數個扇葉環設於該輪轂的外周;及一連接環,該連接環連接該數個扇葉,該連接環具有數個肋條以形成有數個配重槽;其中,各該扇葉具有一最高頂緣,各該最高頂緣高出該輪轂的頂緣; 該數個扇葉的外緣形成一最大外徑,該輪轂的外徑與該最大外徑的比值大於0.4且小於或等於0.5。如此,具有降低運作噪音等功效。 The invention also provides a fan wheel of a centrifugal fan, comprising: a rotating shaft; a hub connected to the rotating shaft; a plurality of fan blades, the plurality of fan blade rings are provided on the outer periphery of the hub; and a connecting ring, the connection The ring connects the blades, and the connecting ring has a plurality of ribs to form a plurality of weight grooves; wherein each blade has a highest top edge, and each of the highest top edges is higher than the top edge of the hub; The outer edges of the blades form a maximum outer diameter, and the ratio of the outer diameter of the hub to the maximum outer diameter is greater than 0.4 and less than or equal to 0.5. In this way, it has the effect of reducing operating noise.
其中,該輪轂具有一軸向延伸部,所述該輪轂的外徑為該軸向延伸部的外徑。如此,該輪轂的結構簡易而可便於製造及組裝,具有降低製造成本及提升組裝便利性等功效。 Wherein, the hub has an axial extension, and the outer diameter of the hub is the outer diameter of the axial extension. In this way, the structure of the hub is simple and easy to manufacture and assemble, which has the effects of reducing manufacturing costs and improving assembly convenience.
其中,在該轉軸的軸向上,該輪轂的頂緣與各該扇葉的最高頂緣相距一軸向間距,各該扇葉具有一最大軸向高度,該軸向間距不大於該最大軸向高度的二分之一。如此,可具有更佳的導引氣流及降低運作噪音等效果。 Wherein, in the axial direction of the rotating shaft, the top edge of the hub is separated from the highest top edge of each blade by an axial distance, each blade has a maximum axial height, and the axial distance is not greater than the maximum axial Half of the height. In this way, it can have better effects of guiding airflow and reducing operation noise.
其中,該扇輪具有一延伸盤,該延伸盤連接該輪轂並沿該轉軸的徑向朝外延伸,該數個扇葉的底緣連接該延伸盤,該連接環與該延伸盤相間隔。如此,具有穩固該數個扇葉等功效。 Wherein, the fan wheel has an extension disk, the extension disk is connected to the hub and extends outward in the radial direction of the rotating shaft, the bottom edges of the blades are connected to the extension disk, and the connecting ring is spaced from the extension disk. In this way, it has the effect of stabilizing the several fan blades.
其中,在該轉軸的徑向上,該數個扇葉的最大外徑小於或等於該連接環的外徑。如此,可使各該扇葉的外緣不凸出該連接環,具有避免該連接環影響到各該扇葉的導風效果等功效。 Wherein, in the radial direction of the rotating shaft, the maximum outer diameter of the blades is less than or equal to the outer diameter of the connecting ring. In this way, the outer edge of each fan blade does not protrude from the connecting ring, which has the effect of preventing the connecting ring from affecting the wind guiding effect of each fan blade.
其中,該數個扇葉及該連接環一體成型相連接,該連接環的內徑大於或等於該數個扇葉底緣的外徑。如此,具有提升製造便利性並確保成品可順利離模等功效。 Wherein, the several fan blades and the connecting ring are integrally formed and connected, and the inner diameter of the connecting ring is greater than or equal to the outer diameter of the bottom edges of the several fan blades. In this way, it has the functions of enhancing manufacturing convenience and ensuring that the finished product can be smoothly released from the mold.
其中,該連接環的內周面連接於該數個扇葉的外緣。如此,可確保該連接環之設置不會影響進風。 Wherein, the inner circumferential surface of the connecting ring is connected to the outer edges of the several blades. In this way, it can be ensured that the setting of the connecting ring does not affect the air intake.
〔本發明〕 〔this invention〕
1‧‧‧基座 1‧‧‧Dock
11‧‧‧基板 11‧‧‧ substrate
11a‧‧‧上表面 11a‧‧‧Upper surface
11b‧‧‧下表面 11b‧‧‧Lower surface
12‧‧‧軸管 12‧‧‧Shaft tube
13‧‧‧凸耳 13‧‧‧ lug
131‧‧‧定位孔 131‧‧‧Locating hole
2‧‧‧定子組 2‧‧‧Stator
21‧‧‧鐵芯 21‧‧‧Iron core
22‧‧‧線圈組 22‧‧‧coil set
3‧‧‧扇輪 3‧‧‧fan wheel
31‧‧‧轉軸 31‧‧‧spindle
32‧‧‧輪轂 32‧‧‧Wheel
321‧‧‧軸向延伸部 321‧‧‧Axial extension
33‧‧‧扇葉 33‧‧‧ fan blade
331‧‧‧最高頂緣 331‧‧‧Highest top edge
332‧‧‧外緣 332‧‧‧Outer edge
333‧‧‧底緣 333‧‧‧Bottom edge
34‧‧‧磁性件 34‧‧‧Magnetic parts
35‧‧‧延伸盤 35‧‧‧Extended plate
36‧‧‧連接環 36‧‧‧Connecting ring
361‧‧‧內周面 361‧‧‧Inner peripheral surface
362‧‧‧配重槽 362‧‧‧ Counterweight slot
4‧‧‧彈性墊 4‧‧‧Elastic pad
D1‧‧‧最大外徑 D1‧‧‧Maximum outer diameter
d1‧‧‧外徑 d1‧‧‧Outer diameter
D2‧‧‧外徑 D2‧‧‧Outer diameter
d2‧‧‧內徑 d2‧‧‧Inner diameter
D3‧‧‧外徑 D3‧‧‧Outer diameter
H‧‧‧最大軸向高度 H‧‧‧Maximum axial height
h‧‧‧軸向間距 h‧‧‧Axial spacing
〔習用〕 〔Convention〕
9‧‧‧離心扇 9‧‧‧Centrifugal fan
91‧‧‧基座 91‧‧‧Dock
911‧‧‧中柱 911‧‧‧Central column
92‧‧‧扇輪 92‧‧‧fan wheel
921‧‧‧轉軸 921‧‧‧spindle
922‧‧‧輪轂 922‧‧‧Wheel
923‧‧‧扇葉 923‧‧‧fan blade
93‧‧‧定子組 93‧‧‧Stator
第1圖:一種習知離心扇的立體結構示意圖。 Figure 1: Schematic diagram of a three-dimensional structure of a conventional centrifugal fan.
第2圖:一種習知離心扇的剖視結構示意圖。 Fig. 2: A schematic sectional view of a conventional centrifugal fan.
第3圖:本發明離心扇一實施例的立體結構示意圖。 Figure 3: Schematic diagram of a three-dimensional structure of an embodiment of the centrifugal fan of the present invention.
第4圖:本發明離心扇一實施例的剖視結構示意圖。 Fig. 4: A schematic sectional view of an embodiment of a centrifugal fan of the present invention.
第5圖:本發明扇輪一實施例的立體結構示意圖。 Fig. 5: A schematic view of a three-dimensional structure of an embodiment of a fan wheel of the present invention.
為讓本發明之上述及其他目的、特徵及優點能更明顯易懂,下文特舉本發明之較佳實施例,並配合所附圖式,作詳細說明如下:請參照第3、4圖,其係本發明離心扇的一較佳實施例,該離心扇大致上包含一基座1、一定子組2及一扇輪3,該定子組2及該扇輪3均組裝於該基座1。
In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are described below in conjunction with the attached drawings, which are described in detail as follows: Please refer to Figures 3 and 4. It is a preferred embodiment of the centrifugal fan of the present invention. The centrifugal fan generally includes a
該基座1具有一基板11及一軸管12,該軸管12可以結合該基板11,或是較佳使該軸管12與該基板11一體成型相連,進而簡化該基座1的結構複雜性。此外,該軸管12的一端呈開放狀,另一端則較佳呈封閉狀,以防注入該軸管12中的潤滑流體從該軸管12的底部滲漏。
The
又,該基座1還可在該基板11的周緣設有數個凸耳13,各該凸耳13設有一定位孔131,各該凸耳13結合有一彈性墊4(例如橡膠墊),該彈性墊4包覆該凸耳13的上、下表面,但維持該定位孔131不被完全遮蔽。如此,可利用鎖固件(例如螺絲,圖未繪示)穿過各該定位孔131,將該基座1組裝定位在如冷凍櫃或冰箱等系統殼體(圖未繪示)中的預定位置,並由該彈性墊4貼接該系統殼體以吸收震動,使本發明離心扇運作時所產生的震動不易傳導至系統殼體,系統運作時所產生的震動亦不易傳導至該基座1,故能有效改善震動噪音問題。
In addition, the
該定子組2設於該軸管12的外周,該定子組2可以為各種能夠驅動該扇輪3旋轉的結構設計;例如但不限制地,本實施例可選擇將該定子組2套設結合於該軸管12的外周壁,且該定子組2包含一鐵芯21及捲繞結合於該鐵芯21的一線圈組22。
The
請參照第4、5圖,該扇輪3具有一轉軸31、一輪轂32、數
個扇葉33及一磁性件34,該轉軸31可旋轉地設於該軸管12,該輪轂32連接該轉軸31,該數個扇葉33環設於該輪轂32的外周,該磁性件34則設於該輪轂32的內表面並與該定子組2的鐵芯21相對;藉此,該定子組2通電產生磁場後,可驅動該扇輪3旋轉作動。其中,該基座1的基板11具有相對的一上表面11a及一下表面11b,該基板11軸向對應於該扇輪3的範圍內較佳呈封閉狀,使該上表面11a與該下表面11b不連通,以減少不必要的氣流流失及擾流現象,確保氣流可被順暢地導向側端,並具有降低運作噪音的功能。
Please refer to Figures 4 and 5, the
更詳言之,各該扇葉33具有一最高頂緣331,且各該扇葉33的最高頂緣331高出該輪轂32的頂緣,使得氣流進入該扇輪3的旋轉範圍後,在衝向該輪轂32的頂緣之前,即可被該數個扇葉33所擾動而流向側端,藉以提升導引氣流流動的順暢度,並兼可降低運作噪音。具體而言,在該轉軸31的軸向上,該輪轂32的頂緣與各該扇葉33的最高頂緣331相距一軸向間距h,而各該扇葉33具有一最大軸向高度H,該軸向間距h較佳不大於該最大軸向高度H的二分之一,以達到更佳的導引氣流及降低運作噪音等效果。
More specifically, each
此外,該數個扇葉33的外緣332形成一最大外徑D1,該輪轂32的外徑D2與該最大外徑D1的比值(D2/D1)較佳大於0.4且小於或等於0.5,可達到最為明顯的降低運作噪音效果。其中,該輪轂32具有一軸向延伸部321,前述該輪轂32的外徑D2即為該軸向延伸部321的外徑。
In addition, the
本實施例的扇輪3另具有一延伸盤35及一連接環36,該延伸盤35連接該輪轂32並沿該轉軸31的徑向朝外延伸,該數個扇葉33的底緣333連接於該延伸盤35;該連接環36則連接該數個扇葉33並與該延伸盤35相間隔,用以穩固該數個扇葉33。其中,在該轉軸31的徑向上,該數個扇葉33的最大外徑D1較佳小於或等於該連接環36的外徑d1,使
各該扇葉33的外緣332不凸出該連接環36,藉以避免該連接環36之設置影響到各該扇葉33的導風效果。是以,各該扇葉33的外緣332可以如圖所示呈平直狀,或是由上而下朝該輪轂32方向傾斜等,本發明均不加以限制。特別是,當選擇使該數個扇葉33及該連接環36一體成型相連接以提升製造便利性時,較佳使該連接環36的內徑d2大於或等於該數個扇葉33底緣333的外徑D3,以確保射出成型後的成品可順利離模。
The
此外,該連接環36的內周面361較佳連接於該數個扇葉33的外緣332,藉以確保該連接環36之設置不會影響進風,且該連接環36連接各該扇葉33處較佳設成導弧型態,藉以加強連接處的強度,且可避免該處易裂損。該連接環36還可設有至少一配重槽362,該配重槽362可用以容置平衡配重件,藉以調整該扇輪3之配重,從而提升該扇輪3的旋轉順暢度及平穩度。
In addition, the inner circumferential surface 361 of the connecting
綜上所述,本發明的離心扇及其扇輪,可藉由使各扇葉的最高頂緣高出輪轂的頂緣,以及使扇輪中除了轉軸以外的其他構件維持特定型態及尺寸比例,從而提升該離心扇運作時導引氣流流動的順暢度,有效達到降低運作噪音等功效。 In summary, the centrifugal fan and the fan wheel of the present invention can maintain the specific shape and size of the other components of the fan wheel except the rotating shaft by making the highest top edge of each blade higher than the top edge of the hub Proportion, so as to improve the smoothness of the air flow during the operation of the centrifugal fan, and effectively reduce the operating noise.
雖然本發明已利用上述較佳實施例揭示,然其並非用以限定本發明,任何熟習此技藝者在不脫離本發明之精神和範圍之內,相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with this art without departing from the spirit and scope of the present invention still makes various changes and modifications to the above-mentioned embodiments. The technical scope of the invention is protected, so the scope of protection of the present invention shall be subject to the scope defined in the appended patent application.
1‧‧‧基座 1‧‧‧Dock
11‧‧‧基板 11‧‧‧ substrate
11a‧‧‧上表面 11a‧‧‧Upper surface
11b‧‧‧下表面 11b‧‧‧Lower surface
12‧‧‧軸管 12‧‧‧Shaft tube
2‧‧‧定子組 2‧‧‧Stator
21‧‧‧鐵芯 21‧‧‧Iron core
22‧‧‧線圈組 22‧‧‧coil set
3‧‧‧扇輪 3‧‧‧fan wheel
31‧‧‧轉軸 31‧‧‧spindle
32‧‧‧輪轂 32‧‧‧Wheel
321‧‧‧軸向延伸部 321‧‧‧Axial extension
33‧‧‧扇葉 33‧‧‧ fan blade
331‧‧‧最高頂緣 331‧‧‧Highest top edge
332‧‧‧外緣 332‧‧‧Outer edge
333‧‧‧底緣 333‧‧‧Bottom edge
34‧‧‧磁性件 34‧‧‧Magnetic parts
35‧‧‧延伸盤 35‧‧‧Extended plate
36‧‧‧連接環 36‧‧‧Connecting ring
361‧‧‧內周面 361‧‧‧Inner peripheral surface
362‧‧‧配重槽 362‧‧‧ Counterweight slot
D1‧‧‧最大外徑 D1‧‧‧Maximum outer diameter
d1‧‧‧外徑 d1‧‧‧Outer diameter
D2‧‧‧外徑 D2‧‧‧Outer diameter
d2‧‧‧內徑 d2‧‧‧Inner diameter
D3‧‧‧外徑 D3‧‧‧Outer diameter
H‧‧‧最大軸向高度 H‧‧‧Maximum axial height
h‧‧‧軸向間距 h‧‧‧Axial spacing
Claims (16)
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TW107103656A TWI681127B (en) | 2018-02-01 | 2018-02-01 | Centrifugal fan and impeller thereof |
CN201810160050.4A CN110107514A (en) | 2018-02-01 | 2018-02-26 | Centrifugal fan and fan wheel thereof |
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TW201934879A (en) | 2019-09-01 |
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