TW201915343A - Axial fan - Google Patents
Axial fan Download PDFInfo
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- TW201915343A TW201915343A TW107126325A TW107126325A TW201915343A TW 201915343 A TW201915343 A TW 201915343A TW 107126325 A TW107126325 A TW 107126325A TW 107126325 A TW107126325 A TW 107126325A TW 201915343 A TW201915343 A TW 201915343A
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Classifications
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/058—Bearings magnetic; electromagnetic
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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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
本發明是有關於一種軸流風扇。The invention relates to an axial flow fan.
一般各種軸流風扇已廣為人知。例如,已揭示有如下事項,即,在外轉子型送風風扇中,設置會使機器裝設部的固有頻率改變的調整構件,以抑制共振產生(參照專利文獻1)。A wide variety of axial fans are widely known. For example, in the outer rotor type air blowing fan, an adjustment member that changes the natural frequency of the machine mounting portion is provided to suppress resonance (see Patent Document 1).
然而,在軸流風扇為有樹脂製葉輪覆蓋圓筒形狀的金屬製轉子座的形狀的情況下,葉輪有時會產生裂縫。這是由於軸流風扇一旦運轉,轉子座便會發熱,且金屬與樹脂的線膨脹係數不同所導致的。特別是在這種風扇的情況下,由於是在形成轉子座外周的側面與葉輪的接觸部分進行定心,因此無法使該接觸部分具有多餘的間隙,從而變得容易產生這種裂縫。 先前技術文獻However, in the case where the axial flow fan has a shape in which a resin impeller covers a cylindrical metal rotor seat, the impeller may be cracked. This is due to the fact that once the axial fan is operated, the rotor seat will generate heat and the coefficient of linear expansion of the metal and resin will be different. In particular, in the case of such a fan, since the contact portion between the side surface forming the outer circumference of the rotor seat and the impeller is centered, it is impossible to make the contact portion have an excessive gap, and such a crack is likely to occur. Prior technical literature
專利文獻 專利文獻1:日本特許第6183995號公報Patent Document Patent Document 1: Japanese Patent No. 6138995
發明概要 本發明之實施形態的目的在於提供一種有考慮到熱膨脹而使耐久性提升的軸流風扇。SUMMARY OF THE INVENTION An object of an embodiment of the present invention is to provide an axial flow fan which has improved durability in consideration of thermal expansion.
根據本發明的觀點的軸流風扇具備:軸件,為旋轉軸;氣體動壓軸承,藉由氣體動壓來抑制前述軸件的徑向變動;架體,為金屬製,且為圓筒形狀的一端有被圓形面堵塞的形狀,前述圓形面在中央設有可供前述軸件貫穿的第1孔;及葉輪,為樹脂製,覆蓋前述架體以將前述架體收納於內部,且在設於圓形面中央的第2孔內側與前述軸件之間完成定心。An axial flow fan according to the aspect of the present invention includes: a shaft member that is a rotating shaft; and a gas dynamic pressure bearing that suppresses radial fluctuation of the shaft member by gas dynamic pressure; the frame body is made of metal and has a cylindrical shape One end has a shape blocked by a circular surface, the circular surface is provided with a first hole through which the shaft member can pass, and an impeller is made of resin, and covers the frame body to house the frame body therein. The centering is completed between the inner side of the second hole provided at the center of the circular surface and the shaft member.
用以實施發明之形態 (實施形態)Form for carrying out the invention (embodiment)
圖1是顯示本發明之實施形態的軸流風扇10的構成的立體圖。圖2是顯示實施形態的軸流風扇10的構成的截面圖。Fig. 1 is a perspective view showing a configuration of an axial fan 10 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the configuration of the axial flow fan 10 of the embodiment.
軸流風扇10可作為例如用來冷卻伺服器的冷卻風扇來使用。軸流風扇10具備馬達本體1、葉輪2、及外機座3。The axial fan 10 can be used as, for example, a cooling fan for cooling the servo. The axial fan 10 includes a motor body 1, an impeller 2, and an outer base 3.
圖3是顯示實施形態的馬達本體1的構成的立體圖。Fig. 3 is a perspective view showing the configuration of the motor main body 1 of the embodiment.
馬達本體1分為會旋轉的旋轉體及相對於旋轉體的旋轉呈靜止的靜止部分。The motor body 1 is divided into a rotating body that rotates and a stationary portion that is stationary with respect to the rotation of the rotating body.
馬達本體1的旋轉體是以軸件11、軸座12、架體13、及磁鐵14所構成。軸座12及架體13形成轉子座。The rotating body of the motor body 1 is composed of a shaft member 11, a shaft seat 12, a frame body 13, and a magnet 14. The shaft seat 12 and the frame body 13 form a rotor seat.
馬達本體1的靜止部分是以基板15、複數個線圈16、芯件17、及複數個支撐構件18所構成。The stationary portion of the motor body 1 is composed of a substrate 15, a plurality of coils 16, a core member 17, and a plurality of support members 18.
軸件11為旋轉體的旋轉軸,呈圓柱形狀。軸件11為鐵等金屬製。The shaft member 11 is a rotating shaft of the rotating body and has a cylindrical shape. The shaft member 11 is made of metal such as iron.
軸座12為環狀,表面為平面,背面為與架體13的孔嵌合的形狀。軸座12是在軸件11的上部已嵌合於表面中央的孔的狀態下進行接合。軸座12的底面部分與架體13的上部接合。軸座12的材料是選擇線膨脹係數與架體13的材料的金屬接近的物體,藉此來抑制因為熱膨脹所導致的軸座12與架體13的偏移。具體而言,架體13為鐵製時,軸座12較佳為黃銅製或鋼製等。黃銅比鋼更不易生鏽,因此適用於軸座12的材料。The shaft base 12 has an annular shape, a flat surface, and a rear surface that is fitted into the hole of the frame body 13. The shaft base 12 is joined in a state in which the upper portion of the shaft member 11 is fitted into a hole in the center of the surface. The bottom surface portion of the axle seat 12 is engaged with the upper portion of the frame body 13. The material of the shaft seat 12 is an object that selects a line expansion coefficient close to the metal of the material of the frame body 13, thereby suppressing the offset of the shaft seat 12 from the frame body 13 due to thermal expansion. Specifically, when the frame body 13 is made of iron, the shaft base 12 is preferably made of brass or steel. Brass is less prone to rust than steel and is therefore suitable for the material of the shaft seat 12.
架體13為如下形狀,即,在將圓筒形狀的一端加以堵塞的圓形表面(上表面)上於中央設有可供軸件11突出的孔的形狀。架體13上表面的孔在有軸件11貫穿的狀態下,會成為被軸座12堵塞而可將軸件11與架體13之間所產生的間隙加以包覆的狀態。架體13為鐵等金屬製。架體13是藉由衝壓加工而成形。The frame body 13 has a shape in which a circular surface (upper surface) which is closed at one end of the cylindrical shape is provided with a hole in the center where the shaft member 11 can protrude. The hole on the upper surface of the frame body 13 is in a state in which the shaft member 11 is penetrated, and the gap formed between the shaft member 11 and the frame body 13 can be covered by the shaft seat 12. The frame body 13 is made of metal such as iron. The frame body 13 is formed by press working.
磁鐵14是用來使其具有作為馬達本體1的轉子之功能的永久磁鐵。磁鐵14為圓筒形狀且被裝設於架體13的內側。The magnet 14 is a permanent magnet for providing a function as a rotor of the motor body 1. The magnet 14 has a cylindrical shape and is attached to the inner side of the frame body 13.
基板15呈圓板形狀且中央設有供軸件11貫穿的孔。基板15有安裝用來驅動馬達本體1的控制電路。基板15上設有可檢測轉子的旋轉位置的感測器151。此外,基板15也可以使用於未設有感測器151的無感測器馬達(sensorless motor)。又,基板15也可以不裝設於馬達本體1上,而是裝設於外機座3上。這種構成例如被使用於未設有感測器151的無感測器馬達上。The substrate 15 has a circular plate shape and is provided at the center with a hole through which the shaft member 11 is inserted. The substrate 15 has a control circuit mounted to drive the motor body 1. A sensor 151 is provided on the substrate 15 to detect the rotational position of the rotor. Further, the substrate 15 can also be used for a sensorless motor in which the sensor 151 is not provided. Further, the substrate 15 may be mounted on the outer casing 3 without being mounted on the motor body 1. Such a configuration is used, for example, on a sensorless motor that is not provided with the sensor 151.
線圈16與芯件17被設在架體13的內部。各線圈16纏繞芯件17,並在圓周上以等間隔配置在軸件11的周圍。線圈16和芯件17具有作為馬達本體1的定子的功能。此外,芯件17也可以由多個構件所構成。例如,芯件17也可以為薄板沿旋轉軸方向堆積形成,以抑制渦流損失的構造。The coil 16 and the core member 17 are provided inside the frame body 13. Each of the coils 16 is wound around the core member 17, and is disposed around the shaft member 11 at equal intervals on the circumference. The coil 16 and the core member 17 have a function as a stator of the motor body 1. Further, the core member 17 may also be composed of a plurality of members. For example, the core member 17 may be a structure in which a thin plate is stacked in the direction of the rotation axis to suppress eddy current loss.
複數個支撐構件18包含:將旋轉體支撐成可相對於馬達本體1的靜止部分進行旋轉的構件、及將馬達本體1的靜止部分支撐成可被固定在外機座3的構件。例如,支撐構件18是用來配置線圈16及芯體17的構件,或是貫穿設於基板15的小孔,從而將靜止部分固定在外機座3的棒狀構件。The plurality of support members 18 include a member that supports the rotating body to be rotatable relative to the stationary portion of the motor body 1, and a member that supports the stationary portion of the motor body 1 to be fixed to the outer base 3. For example, the support member 18 is a member for arranging the coil 16 and the core 17, or a rod-shaped member that is inserted through the small hole of the substrate 15 to fix the stationary portion to the outer casing 3.
圖4是顯示實施形態的葉輪2自下側看的構成的立體圖。圖5是顯示實施形態的葉輪2裝設於馬達本體1的狀態的立體圖。Fig. 4 is a perspective view showing a configuration of the impeller 2 of the embodiment as seen from the lower side. FIG. 5 is a perspective view showing a state in which the impeller 2 of the embodiment is mounted on the motor main body 1.
葉輪2為塑膠等樹脂製。葉輪2為在葉輪本體21上設有複數個葉片22的形狀,葉輪本體21為圓筒形狀的一端有被堵塞的形狀。又,葉輪本體21為在圓形表面(上表面)上於中央設有供軸座12的外周面嵌合的孔的形狀。為了防止因熱膨脹所導致的裂縫,而使葉輪本體21的上表面的孔的周圍具有足夠的厚度。葉輪本體21的內側的形狀為能供架體13從上部嵌入的形狀。葉輪本體21的內側可設置塗上黏著劑的凹部,黏著劑是用來與架體13黏著。葉片22是成形為旋轉時可讓風沿旋轉軸方向流動的形狀。葉輪2是構成為會覆蓋架體13,且被裝設成能供軸座12的外形嵌入上表面的孔。藉由將軸座12的外形嵌入葉輪2的上表面的孔,就會成為馬達本體1完成定心(centering)的狀態。葉輪本體21的內周面和架體13的外周面以黏著劑黏著。The impeller 2 is made of a resin such as plastic. The impeller 2 has a shape in which a plurality of blades 22 are provided on the impeller body 21, and the impeller body 21 has a shape in which one end of the cylindrical shape is blocked. Further, the impeller body 21 has a shape in which a hole for fitting the outer peripheral surface of the shaft base 12 is provided at the center on the circular surface (upper surface). In order to prevent cracks caused by thermal expansion, the periphery of the hole of the upper surface of the impeller body 21 has a sufficient thickness. The shape of the inner side of the impeller body 21 is a shape in which the frame body 13 can be fitted from the upper portion. A concave portion coated with an adhesive may be disposed on the inner side of the impeller body 21, and the adhesive is used to adhere to the frame body 13. The blade 22 is shaped to allow wind to flow in the direction of the rotation axis when it is shaped to rotate. The impeller 2 is configured to cover the frame body 13 and is provided with a hole into which the outer shape of the shaft seat 12 can be fitted to the upper surface. By fitting the outer shape of the shaft base 12 into the hole on the upper surface of the impeller 2, the motor body 1 is in a centering state. The inner circumferential surface of the impeller body 21 and the outer circumferential surface of the frame body 13 are adhered by an adhesive.
圖6是顯示垂直地切斷實施形態的外機座3的構成的立體圖。Fig. 6 is a perspective view showing a configuration in which the outer casing 3 of the embodiment is vertically cut.
外機座3具備:杯件部分31、複數個靜止翼(肋)32、外形部分33、軸承套34、及磁性軸承35。The outer casing 3 is provided with a cup portion 31, a plurality of stationary blades (ribs) 32, an outer shape portion 33, a bearing sleeve 34, and a magnetic bearing 35.
杯件部分31被配置在外機座3的底面部分的中央。杯件部分31為安裝馬達本體1之處。馬達本體1被設置於杯件部分31的底面,以使葉輪2位於上面。基板15被配置為固定在杯件部分31的內部。杯件部分31的外形比基板15的外形大一圈。因此,在馬達本體1被安裝的狀態下,位在杯件部分31外周且往垂直方向延伸的外緣和基板15之間會有少許空隙。另外,基板15被裝設於外機座3的時候,基板15是設置成黏著於杯件部分31的外緣,且在中央的孔被軸件11貫穿的位置上,該孔的內周會產生少許空隙。The cup portion 31 is disposed at the center of the bottom surface portion of the outer housing 3. The cup portion 31 is where the motor body 1 is mounted. The motor body 1 is disposed on the bottom surface of the cup portion 31 such that the impeller 2 is positioned above. The substrate 15 is configured to be fixed inside the cup portion 31. The outer shape of the cup portion 31 is larger than the outer shape of the substrate 15. Therefore, in a state where the motor body 1 is mounted, there is a slight gap between the outer edge of the outer periphery of the cup portion 31 and extending in the vertical direction and the substrate 15. Further, when the substrate 15 is mounted on the outer casing 3, the substrate 15 is disposed to adhere to the outer edge of the cup portion 31, and at the position where the central hole is penetrated by the shaft member 11, the inner circumference of the hole A little gap is created.
靜止翼32是在杯件部分31的周圍以等間隔設置,以連接杯件部分31的外周面和外形部分33的內周面。靜止翼32是成形為會隨著旋轉體的旋轉而使風沿旋轉軸方向穿過相鄰兩個靜止翼32之間的形狀。為了確保空氣的流動特性,靜止翼32是使用樹脂等具柔軟性的材料成形為薄形狀。The stationary blades 32 are disposed at equal intervals around the cup portion 31 to connect the outer peripheral surface of the cup portion 31 and the inner peripheral surface of the outer shape portion 33. The stationary blade 32 is shaped to pass the wind between the adjacent two stationary blades 32 in the direction of the rotation axis as the rotating body rotates. In order to ensure the flow characteristics of the air, the stationary blade 32 is formed into a thin shape using a flexible material such as a resin.
外形部分33為覆蓋軸流風扇10最外側的部分。外形部分33是在收納馬達本體1的圓筒形狀部分的兩端裝設了四角形狀的凸緣部分的形狀,凸緣部分設有用來將軸流風扇10裝設於安裝處的孔。The outer shape portion 33 is a portion covering the outermost side of the axial flow fan 10. The outer shape portion 33 has a shape in which a quadrangular flange portion is provided at both ends of the cylindrical portion of the motor main body 1, and the flange portion is provided with a hole for mounting the axial flow fan 10 at the mounting portion.
軸承套34設在杯件部分31的中央。軸承套34為圓筒形狀。馬達本體1是安裝成可使得軸件11***軸承套34。軸承套34是用來抑制軸件11往徑向變動的氣體動壓軸承。軸件11一旦旋轉,便會因軸件11周圍的氣體動壓,使得軸件11和軸承套34的間隙保持一定,藉此來抑制軸件11的變動。因此,在軸件11旋轉時,軸件11和軸承套34保持未接觸。A bearing sleeve 34 is provided at the center of the cup portion 31. The bearing sleeve 34 has a cylindrical shape. The motor body 1 is mounted such that the shaft member 11 is inserted into the bearing sleeve 34. The bearing sleeve 34 is a gas dynamic pressure bearing for suppressing the radial variation of the shaft member 11. When the shaft member 11 is rotated, the gap between the shaft member 11 and the bearing sleeve 34 is kept constant due to the dynamic pressure of the gas around the shaft member 11, whereby the fluctuation of the shaft member 11 is suppressed. Therefore, when the shaft member 11 is rotated, the shaft member 11 and the bearing sleeve 34 remain untouched.
磁性軸承35被設在位於軸承套34的底面的部分。磁性軸承35主要由永久磁鐵所構成。磁性軸承35是利用永久磁鐵彼此的磁性所產生的吸引力或排斥力,來抑制軸件11往推力方向變動。因此,軸件11和磁性軸承35保持未接觸。此外,如果是能夠抑制軸件11往推力方向變動的軸承,就不限於磁性軸承35,可以是任何一種軸承。如同於磁性軸承35,只要是使軸件11保持未接觸的非接觸型軸承的話,則耐久性佳,適合高速旋轉,但也可以是接觸型軸承。The magnetic bearing 35 is provided at a portion located at the bottom surface of the bearing sleeve 34. The magnetic bearing 35 is mainly composed of a permanent magnet. The magnetic bearing 35 suppresses the thrust direction of the shaft member 11 by the attraction force or repulsive force generated by the magnetic properties of the permanent magnets. Therefore, the shaft member 11 and the magnetic bearing 35 remain untouched. Further, if it is a bearing capable of suppressing the fluctuation of the shaft member 11 in the thrust direction, it is not limited to the magnetic bearing 35, and may be any type of bearing. As with the magnetic bearing 35, as long as it is a non-contact type bearing that keeps the shaft member 11 untouched, it is excellent in durability and suitable for high-speed rotation, but may be a contact type bearing.
接著,針對軸流風扇10的定心來進行說明。Next, the centering of the axial fan 10 will be described.
如圖1及圖2顯示,軸座12的上部的外周面與葉輪2的上表面的孔的內側接觸的部分為軸流風扇10的定心處SN。軸流風扇10製造時,會在定心處SN進行定心調整,以使軸件11的旋轉軸的中心成為希望的位置。As shown in FIGS. 1 and 2, the portion where the outer peripheral surface of the upper portion of the boss 12 contacts the inner side of the hole of the upper surface of the impeller 2 is the centering portion SN of the axial fan 10. When the axial fan 10 is manufactured, centering adjustment is performed at the centering point SN so that the center of the rotating shaft of the shaft member 11 becomes a desired position.
軸流風扇10的製造是在常溫下進行,故必須考慮到因軸流風扇10運轉所引起的發熱而使得各零件熱膨脹這點。該熱膨脹的影響會是定心處SN比較少,定心處SN是位在直徑比葉輪2的內周面小的上表面的孔的內側。例如,考慮到熱膨脹,若葉輪2的內周面和架體13的外周面之間需要50~150μm的間隙,則定心處SN即軸座12的外周面與葉輪2的上表面的孔的內側之間隙只需0~50μm即可。Since the axial fan 10 is manufactured at a normal temperature, it is necessary to consider the heat generated by the operation of the axial fan 10 to cause the components to thermally expand. The effect of this thermal expansion is that the centering point SN is relatively small, and the centering point SN is located inside the hole having a diameter smaller than the inner peripheral surface of the impeller 2. For example, in consideration of thermal expansion, if a gap of 50 to 150 μm is required between the inner circumferential surface of the impeller 2 and the outer circumferential surface of the frame body 13, the centering portion SN is the inner circumferential surface of the shaft seat 12 and the inner side of the hole of the upper surface of the impeller 2. The gap is only required to be 0 to 50 μm.
在定心處SN進行定心調整,就不須在葉輪2的內周面與架體13的外周面的接觸處實施定心,因此能夠考慮到葉輪2與架體13的線膨脹係數的差異,充分地加寬該接觸處的間隙以免產生裂縫。又,藉由將定心處SN設在直徑比葉輪2的內周面小的上表面的孔的內側,需要考慮到熱膨脹來加以確保的間隙寬度便可較窄,故能夠提升定心的精度。Since the centering adjustment is performed at the centering portion SN, it is not necessary to perform centering at the contact between the inner circumferential surface of the impeller 2 and the outer circumferential surface of the frame body 13, so that the difference in linear expansion coefficient between the impeller 2 and the frame body 13 can be considered. , fully widen the gap at the contact to avoid cracks. Further, by providing the centering portion SN on the inner side of the hole having a diameter smaller than the inner peripheral surface of the impeller 2, it is necessary to ensure a narrow gap width in consideration of thermal expansion, so that the centering accuracy can be improved. .
接著,針對軸流風扇10的旋轉體的質量失衡的修正方法的一例來進行說明。Next, an example of a method of correcting the mass imbalance of the rotating body of the axial fan 10 will be described.
軸座12設置於軸件11上部的周圍。軸座12的材質為比重比較重,容易切削加工的黃銅。因此,藉由切削軸座12,進行負平衡(minus balance)方式的質量失衡修正。在此,是將以鑽孔機鑽圓孔做質量失衡修正的方法作為範例來進行說明,但是要使用什麼,以何種方式做切削加工都可。The shaft seat 12 is disposed around the upper portion of the shaft member 11. The material of the shaft seat 12 is brass which is relatively heavy in weight and easy to be machined. Therefore, the mass balance correction by the minus balance method is performed by cutting the shaft base 12. Here, a method of correcting the mass imbalance by drilling a circular hole in a drilling machine will be described as an example, but what is to be used and how to perform the cutting process.
首先,測量軸流風扇10的旋轉體的質量平衡。根據此測量結果,決定以鑽孔機在軸座12鑽孔之處及深度。依照此決定結果,以鑽孔機在軸座12鑽孔。關於鑽孔之處及深度,可藉由運用以往所知的方法來機械性地決定。因此,亦可自動化進行從質量平衡的測量到決定鑽孔之處及深度並對軸座12進行質量失衡的修正加工的作業。First, the mass balance of the rotating body of the axial flow fan 10 is measured. Based on this measurement, it is determined where the drilling machine is drilled in the shaft seat 12 and the depth. According to the result of this decision, the drill is drilled in the shaft seat 12. The location and depth of the hole can be determined mechanically by using a conventionally known method. Therefore, it is also possible to automate the work of correcting the machining from the measurement of the mass balance to the determination of the position and depth of the hole and the mass imbalance of the shaft seat 12.
此外,質量失衡的修正方法不限於上述方法,以何種方式進行都可。例如,亦可進行正平衡(plus balance)方式的質量失衡修正。作為具體例,在軸件11上部的周圍設置溝槽,在該溝槽塗上比重較重的黏著劑,藉以進行質量失衡修正亦可。Further, the method of correcting the mass imbalance is not limited to the above method, and may be performed in any manner. For example, a mass balance correction in the plus balance mode can also be performed. As a specific example, a groove is provided around the upper portion of the shaft member 11, and an adhesive having a relatively large specific gravity is applied to the groove to perform mass imbalance correction.
根據本實施形態,因為是在中央的孔已經有軸件11嵌合的軸座12的外周面和葉輪2的上表面的孔的內側接觸的定心處SN進行定心,所以不須在葉輪2的內周面與架體13的外周面之間進行定心。因此,能夠考慮到熱膨脹而確保葉輪2的內周面與架體13的外周面的間隙較寬。因此,能夠防止由於葉輪2的材料即樹脂與架體13的材料即金屬的線膨脹係數的差異,而使葉輪2產生裂縫的情形。According to the present embodiment, since the center hole is centered at the centering portion SN where the outer peripheral surface of the shaft seat 12 to which the shaft member 11 is fitted and the inner surface of the upper surface of the impeller 2 is centered, it is not necessary to be in the impeller. Centering is performed between the inner circumferential surface of the second surface and the outer circumferential surface of the frame body 13. Therefore, it is possible to ensure that the gap between the inner circumferential surface of the impeller 2 and the outer circumferential surface of the frame body 13 is wide in consideration of thermal expansion. Therefore, it is possible to prevent the impeller 2 from being cracked due to the difference in the linear expansion coefficient of the material of the impeller 2, that is, the resin and the material of the frame 13, that is, the metal.
又,因為葉輪2的定心處SN的直徑比葉輪2的內周面的直徑還小,所以因熱膨脹所產生的變化的大小也會變小。因此,藉由在定心處SN進行定心,相較於在葉輪2的內周面進行定心的情形,能將考慮到熱膨脹的間隙的寬度變小,因此能夠提升定心的精度。Further, since the diameter of the centering portion SN of the impeller 2 is smaller than the diameter of the inner peripheral surface of the impeller 2, the magnitude of the change due to thermal expansion also becomes small. Therefore, by centering at the centering point SN, the width of the gap in consideration of thermal expansion can be made smaller than the case where centering is performed on the inner circumferential surface of the impeller 2, so that the accuracy of the centering can be improved.
另外,藉由採用非接觸型的氣體動壓軸承作為軸件11的軸承,相較於接觸型的滾珠軸承,能夠作成適合於高速旋轉的高耐久性軸流風扇10。另外,藉由採用非接觸型的磁性軸承作為推力軸承,能夠作成更加適合於高速旋轉,並且耐久性優異的軸流風扇10。Further, by using the non-contact type gas dynamic pressure bearing as the bearing of the shaft member 11, the high-durability axial flow fan 10 suitable for high-speed rotation can be formed as compared with the contact type ball bearing. Further, by using a non-contact type magnetic bearing as the thrust bearing, it is possible to manufacture the axial flow fan 10 which is more suitable for high-speed rotation and excellent in durability.
又,藉由設置可切削的軸座12,能夠容易地以負平衡方式進行旋轉體的質量失衡修正。Further, by providing the machinable shaft base 12, the mass imbalance correction of the rotating body can be easily performed in a negative balance manner.
另外,作為本實施形態的變形例,如以下的構成亦可。不設置軸座12,進行衝緣加工(Burring),以使架體13上表面的孔成為可供軸件11嵌合的大小,並且使孔的周圍垂直豎起。將葉輪2的上表面的孔縮小,以使其能嵌合於架體13經衝緣加工的孔的外周面。在這種構成中,將葉輪2的上表面的孔的內側與架體13經衝緣加工的孔的外周面的接觸處當作定心處SN。因此如同本實施形態,能夠考慮到熱膨脹而確保葉輪2的內周面與架體13的外周面的間隙較寬。因此,能抑制因兩種材質的線膨脹係數的差異而造成裂縫的產生,進而提升其耐久性。又,相較於在葉輪2的內周面進行定心的情形,由於能夠在直徑更小之處進行定心,因此能夠提升定心的精度。Further, as a modification of the embodiment, the following configuration may be employed. The shaft seat 12 is not provided, and the burring is performed so that the hole on the upper surface of the frame body 13 is sized to fit the shaft member 11, and the circumference of the hole is vertically erected. The hole of the upper surface of the impeller 2 is reduced so as to be fitted to the outer peripheral surface of the hole of the frame body 13 through the punching. In this configuration, the contact between the inner side of the hole of the upper surface of the impeller 2 and the outer peripheral surface of the hole of the frame body 13 by the punching edge is regarded as the centering point SN. Therefore, as in the present embodiment, it is possible to ensure that the gap between the inner circumferential surface of the impeller 2 and the outer circumferential surface of the frame body 13 is wide in consideration of thermal expansion. Therefore, it is possible to suppress the occurrence of cracks due to the difference in the linear expansion coefficients of the two materials, thereby improving the durability. Moreover, compared with the case where centering is performed on the inner peripheral surface of the impeller 2, since centering can be performed in the smaller diameter, the precision of centering can be improved.
此外,本發明不限於上述的實施形態,即便將構成要素削除、附加或變更等亦可。又,針對複數個實施形態將構成要素加以組合或交換等,藉此來作成新的實施形態亦可。即便此種實施形態直接與上述的實施形態不同,但與本發明宗旨相同者是視為本發明的實施形態已說明的事物,而省略其說明。Further, the present invention is not limited to the above-described embodiments, and any constituent elements may be deleted, added, changed, or the like. Further, in a plurality of embodiments, constituent elements may be combined or exchanged to create a new embodiment. Even if the embodiment is different from the above-described embodiment, the same as the gist of the present invention will be described as an embodiment of the present invention, and the description thereof will be omitted.
1‧‧‧馬達本體1‧‧ ‧ motor body
10‧‧‧軸流風扇10‧‧‧Axial fan
11‧‧‧軸件11‧‧‧ shaft parts
12‧‧‧軸座12‧‧‧ shaft seat
13‧‧‧架體13‧‧‧ ‧ frame
14‧‧‧磁鐵14‧‧‧ magnet
15‧‧‧基板15‧‧‧Substrate
151‧‧‧感測器151‧‧‧ sensor
16‧‧‧線圈16‧‧‧ coil
17‧‧‧芯件17‧‧‧ core pieces
18‧‧‧支撐構件18‧‧‧Support members
2‧‧‧葉輪2‧‧‧ Impeller
21‧‧‧葉輪本體21‧‧‧The impeller body
22‧‧‧葉片22‧‧‧ blades
3‧‧‧外機座3‧‧‧Outer stand
31‧‧‧杯件部分31‧‧‧ Cup parts
32‧‧‧靜止翼32‧‧‧ stationary wing
33‧‧‧外形部分33‧‧‧ Shape part
34‧‧‧軸承套34‧‧‧ bearing sleeve
35‧‧‧磁性軸承35‧‧‧Magnetic bearing
SN‧‧‧定心處SN‧‧‧ Center
圖1是顯示本發明之實施形態的軸流風扇的構成的立體圖。Fig. 1 is a perspective view showing a configuration of an axial flow fan according to an embodiment of the present invention.
圖2是顯示實施形態的軸流風扇的構成的截面圖。Fig. 2 is a cross-sectional view showing the configuration of an axial flow fan of the embodiment.
圖3是顯示實施形態的馬達本體的構成的立體圖。Fig. 3 is a perspective view showing a configuration of a motor main body of the embodiment.
圖4是顯示實施形態的葉輪自下側看的構成的立體圖。Fig. 4 is a perspective view showing a configuration of the impeller according to the embodiment as seen from the lower side.
圖5是顯示實施形態的葉輪裝設於馬達本體的狀態的立體圖。Fig. 5 is a perspective view showing a state in which an impeller according to the embodiment is mounted on a motor body.
圖6是顯示垂直地切斷實施形態的外機座的構成的立體圖。Fig. 6 is a perspective view showing a configuration in which an outer casing of the embodiment is vertically cut.
Claims (7)
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JP2017-185308 | 2017-09-26 | ||
JP2017185308A JP2019060280A (en) | 2017-09-26 | 2017-09-26 | Axial flow fan |
Publications (1)
Publication Number | Publication Date |
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TW201915343A true TW201915343A (en) | 2019-04-16 |
Family
ID=65901253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW107126325A TW201915343A (en) | 2017-09-26 | 2018-07-30 | Axial fan |
Country Status (3)
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JP (1) | JP2019060280A (en) |
TW (1) | TW201915343A (en) |
WO (1) | WO2019064879A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN110056952B (en) * | 2019-05-05 | 2021-12-21 | 重庆海尔空调器有限公司 | Air outlet device, air conditioner indoor unit and air conditioner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08114197A (en) * | 1994-10-17 | 1996-05-07 | Yanagawa Seiko Kk | Bearing structure for axial blower |
JP2000009090A (en) * | 1998-06-23 | 2000-01-11 | Matsushita Electric Ind Co Ltd | Cooling fan and heat sink device using it |
JP2002034205A (en) * | 2000-07-17 | 2002-01-31 | Shicoh Eng Co Ltd | Fan motor with oil-retaining bearing |
JP3082701U (en) * | 2001-06-14 | 2001-12-26 | 皚▲文▼科技股▲分▼有限公司 | fan |
JP2009247143A (en) * | 2008-03-31 | 2009-10-22 | Nidec Sankyo Corp | Fan motor |
DE102015112731A1 (en) * | 2015-08-03 | 2017-02-09 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan device and method for balancing a fan device |
-
2017
- 2017-09-26 JP JP2017185308A patent/JP2019060280A/en active Pending
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2018
- 2018-07-27 WO PCT/JP2018/028349 patent/WO2019064879A1/en active Application Filing
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WO2019064879A1 (en) | 2019-04-04 |
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