201235569 六、發明說明： 【發明戶斤屬之技術領域3 發明領域 本發明係關於電風扇等送風機所使用的軸流風扇、及 使用該軸流風扇之送風機。 I[:先前技術3 發明背景 以往，以該類軸流風扇而言，已知有由軸套部、及由 其外周放射狀形成的複數片翼部所構成者（參照例如專利 文獻1)。而如上所示之軸流風扇係藉由電動機來作旋轉， 藉此各個翼料續發生該，以全體而言叫向傳送氣流 者。 (先前技術文獻） (專利文獻） (專利文獻1)日顿開2__ 11G788號公報 I：發明内容】 發明概要 發明欲解決之課題 j疋如上所示之轴流風扇若著重在其翼部中的一片 時其本身雖連續發生氣流，但是由於前述翼部作圓周運 動，因此所發生的氣流會形成為螺旋狀。在實際的軸流風 扇中由於λ有複數片前述翼部，各個翼部所發生的螺旋 狀氣流會偏移翼部的間距份而相重疊。因此，若由接受氣 流的對象來作觀察時’氣流會發生強弱。接著，若接受氣 201235569 流的對象是人，該氣流的強弱即會造成感受到與自然風不 同的原因。若增加前述翼部的片數，雖可使該問題緩和一 定程度，但是並不足夠。 本發明之目的在解決以上問題，可發生強弱變化少且 呈連續之氣流的軸流風扇及使用該軸流風扇之送風機。 用以欲解決課題之手段 本發明之申請專利範圍第1項所記載之軸流風扇係具 有：軸向兩端呈開放的短筒狀框體；及由設在該框體的複 數個翼所構成的翼部，在比構成該翼部的翼的内端更為内 側’形成有伴隨著前述翼部所發生的主氣流而發生的從氣 流流通的空間。 此外，本發明之申請專利範圍第2項所記載之軸流風扇 係在申請專利範圍1中，具有：位於前述框體的中心部的軸 套部，及將該轴套部與前述框體相連接的複數個輪輻。 此外，本發明之申請專利範圍第3項所記載之送風機係 使用申請專利範圍2之軸流風扇之送風機，其收容有用以使 則述軸流風扇旋轉的電動機的外殼係構成為：實質上容納 於前述翼部的内端所描繪的轨跡的範圍内。 此外，本發明之申請專利範圍第4項所記載之送風機係 使用申請專利範圍丨之軸流風扇之送風機，其將前述框體作 為轉子，在該轉子的内側設置環狀定子，藉由該等轉子及 定子來形成電動機。 發明效果. 本發明之申請專利範圍第〗項所記載之軸流風扇係藉 201235569 由如上構成，於藉由旋轉而使前述翼部形成渦狀主氣流 時，伴隨著該主氣流，在前述翼部的内側及外側形成從氣 流，該等主氣流與從氣流相組合而形成複合氣流。而且， 由於從氣流以緩和主氣流的強弱的方式流動，因此可得強 弱變化少且呈連續的複合氣流。 另外，藉由設置位於前述框體的中心部的軸套部及將 該軸套部與前述框體相連接的複數個輪輻，可以在比前述 翼部更為内側不會主動發生氣流的狀態下安裝在電動機旋 轉。 此外，在使用如上所示之軸流風扇的送風機中，使收 容有用以使前述軸流風扇旋轉的電動機的外殼，在前述軸 流風扇的轴向視下，實質上位於前述翼部的内端所描繪的 執跡的範圍内，藉此不會妨礙氣流通過前述翼部的内側， 而可良好地形成複合氣流。 此外，在使用前述軸流風扇的送風機中，將前述框體 形成為轉子，在該轉子的内側設置環狀定子，藉由該等轉 子及定子來形成電動機，藉此將妨礙在前述框體的内側流 動的從氣流的要素儘可能排除，而可平順地流動從氣流。 圖式簡單說明 第1圖係顯示本發明之第一實施形態之軸流風扇的外 觀圖，（a)係由軸向觀看的外觀圖，（b)係由軸直方向觀看的 外觀圖。 第2圖係該圖的A-A剖面圖。 第3圖係該圖之使用第一實施形態之軸流風扇的送風 5 201235569 機的動作說明圖。 第4圖係由顯示本發明之第二實施形態的袖流風扇及 使用該轴錢狀送風;向峨看的外觀圖。 第5圖係該圖的B-B剖面圖。 第6圖係該圖的動作說明圖。 第7圖係顯示本發明之第三實施形態之轴流風扇之由 軸向所觀看的外觀圖。 第8圖係顯不本發明之第四實施形態之軸流風扇之由 軸向所觀看的外觀圖。 C實施方式3 用以實施發明之形態 以下根據第1圖至第3圖，說明本發明之第一實施形 態。1為本發明之軸流風扇。該輛流風扇丨係具有框體2、軸 套部3、輪輻部4、及翼部5所構成。前述框體2係形成為轴 向兩端呈開放的短圓筒狀。此外，前述軸套部3係位於前述 框體2的中央部’並且在其中心具有用以安裝在電動機之旋 轉軸X的插入孔6。此外，前述輪輻部4係用以將前述軸套部 3同軸保持在前述框體2的中^部者n前述輪輕部咕 有前輪賴部7及後輪輻部8 ’藉由分別繞軸等間距設置複數 個輪輻9所構成。其中，前述前輪㈣7及後純响係繞轴 分別偏離半間距。在本射，前述前輪糾7及後輪輕部8 均藉由繞轴以0.4時ad)間隔排列5條前述輪韓9所構成田。此 外，在本例中’前述前輪轄部7與後輪輕部S係繞細開〇 2 —d)。其中’前述輪輻9係以由前述軸套部3朝放射；向 6 201235569 (申的方柄成。接著’前述輪轄9係其剖面㈣均相201235569 VI. Description of the Invention: [Technical Field of Invention] 3 Field of the Invention The present invention relates to an axial fan used in a blower such as an electric fan, and a blower using the axial fan. [Background of the prior art 3] In the related art, it is known that the axial fan is composed of a boss portion and a plurality of wing portions radially formed on the outer circumference thereof (see, for example, Patent Document 1). The axial fan shown above is rotated by the electric motor, whereby the respective fins continue to occur, and are collectively referred to as the conveying air. (Prior Art Document) (Patent Document 1) (Patent Document 1) Japanese Patent Publication No. 2__11G788: SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION The axial flow fan shown above is focused on its wing portion. Although the airflow continuously occurs in one piece, the airflow generated is formed into a spiral shape due to the circular motion of the wing portion. In the actual axial fan, since λ has a plurality of the aforementioned wings, the spiral airflow generated by each of the wings overlaps with the pitch of the wings. Therefore, if the observation is made by the object receiving the air flow, the airflow will be strong or weak. Then, if the object of the 201235569 flow is a person, the strength of the airflow will cause the feeling of being different from the natural wind. If the number of the aforementioned wings is increased, the problem can be alleviated to a certain extent, but it is not sufficient. SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and it is possible to generate an axial flow fan having a small change in strength and strength and a continuous air flow, and a blower using the axial flow fan. The axial flow fan according to the first aspect of the present invention is characterized in that: the axial fan having the axial ends is open; and the plurality of wings provided in the frame The wing portion that is formed has a space that flows from the airflow that is generated along with the main airflow generated by the wing portion on the inner side of the inner end of the wing that constitutes the wing portion. Further, in the axial flow fan of the second aspect of the invention, the axial flow fan according to the second aspect of the invention includes: a boss portion located at a center portion of the frame body; and the bushing portion and the frame body A plurality of spokes connected. Further, in the air blower according to the third aspect of the present invention, the air blower of the axial flow fan of claim 2 is provided, and the outer casing of the motor for rotating the axial flow fan is configured to substantially accommodate Within the range of the trajectory depicted by the inner end of the aforementioned wing. Further, in the air blower according to the fourth aspect of the present invention, the air blower of the axial flow fan of the patent application is used, wherein the frame body is a rotor, and an annular stator is provided inside the rotor. The rotor and the stator form an electric motor. According to the invention, the axial flow fan of the present invention is constituted as described above, and when the wing portion is formed into a swirling main airflow by rotation, the main airflow is accompanied by the main airflow. The inner and outer sides of the portion form a slave airflow, and the primary airflow combines with the airflow to form a combined airflow. Further, since the airflow flows in such a manner as to moderate the strength of the main airflow, it is possible to obtain a continuous composite airflow with little variation in strength. Further, by providing a boss portion located at a center portion of the frame body and a plurality of spokes connecting the boss portion to the frame body, it is possible to prevent airflow from occurring more actively inside the wing portion. Installed on the motor for rotation. Further, in the air blower using the axial flow fan as described above, an outer casing for housing an electric motor for rotating the axial flow fan is substantially located at an inner end of the wing portion in the axial direction of the axial flow fan Within the range of the traces depicted, the flow of gas through the inside of the wings is not hindered, and the composite gas flow can be well formed. Further, in the air blower using the axial flow fan, the casing is formed as a rotor, and an annular stator is provided inside the rotor, and the rotor and the stator form an electric motor, thereby hindering the inside of the casing. The flowing elements from the airflow are excluded as much as possible, and flow smoothly from the airflow. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an axial flow fan according to a first embodiment of the present invention, (a) is an external view viewed from the axial direction, and (b) is an external view as viewed from the axial direction. Figure 2 is a cross-sectional view taken along the line A-A of the figure. Fig. 3 is a view showing the operation of the air blower using the axial flow fan of the first embodiment in the figure. Fig. 4 is an external view showing a sleeve fan according to a second embodiment of the present invention and a fan-shaped air supply using the shaft. Figure 5 is a cross-sectional view taken along the line B-B of the figure. Fig. 6 is an explanatory view of the operation of the figure. Fig. 7 is an external view showing the axial flow fan of the third embodiment of the present invention as viewed in the axial direction. Fig. 8 is an external view of the axial flow fan of the fourth embodiment of the present invention as viewed in the axial direction. C. Embodiment 3 Mode for Carrying Out the Invention Hereinafter, a first embodiment of the present invention will be described based on Figs. 1 to 3 . 1 is an axial flow fan of the present invention. The flow fan has a frame body 2, a boss portion 3, a spoke portion 4, and a wing portion 5. The frame 2 is formed in a short cylindrical shape that is open at both ends in the axial direction. Further, the boss portion 3 is located at the central portion ' of the frame 2 and has an insertion hole 6 for mounting on the rotation axis X of the motor at the center thereof. Further, the spoke portion 4 is for holding the boss portion 3 coaxially in the middle portion of the frame body 2, the wheel light portion, the front wheel portion 7 and the rear spoke portion 8', respectively, by winding the shaft, etc. The pitch is formed by a plurality of spokes 9. Wherein, the front wheel (four) 7 and the rear pure sound system are respectively offset from the half pitch by the axis. In the present shot, the front wheel correction 7 and the rear wheel light portion 8 are arranged by arranging five of the aforementioned wheels 9 at intervals of 0.4 o'clock around the axis. Further, in this example, the front wheel portion 7 and the rear wheel portion S are wound around the second opening 2 - d). Wherein the aforementioned spokes 9 are radiated by the aforementioned sleeve portion 3; the direction is 6 201235569 (the square handle is formed. Then the above-mentioned wheel system 9 series its profile (four) is homogeneous
轉方向5且οι/ & J 主長形角圓的長方形、或長圓形，相對旋轉方向不 、' ' 口此，則述各輪輻9並非為主動使氣流發生的構 造。此外，此、丄.^ 月迷翼部5係僅在前述框體2的外周側，結蓉 ==:翼1〇所形成。在本例中，由以繞軸°蝴 述翼Η)所構成。藉此，比前述框體2的内 Hi:各翼1〇的内端11更為内側~ 形成=二Γ述軸流風扇1安裝在電動機的旋轉轴X而 向親下^ 風機⑽’收容前述電域的外殼13在軸 谷納於前述框體2的内側，亦即前述各翼_内端 述框體二的軌跡的内側。此外，在前述外殼13的外緣與前 的内緣之間形成有氣流的流入叫。但是’用以安 置電風扇等送風機所需的支㈣並未容納於前述框體2的 内側。 著-兒月本實施形態的作用。若前述袖流風扇L繞前 述旋轉轴X旋轉時，藉由前述翼部5而發生主氣流Vme該主 氣流vm係藉由前述各翼部1G而分卿成為螺旋狀。該等主 氣流VmM藉由前述各翼㈣而連續發生，但是各主氣流 祕 1係成為氣流較弱的區域。另—方面，若前述翼部5使 主氣抓Vm發生時’在前述翼部5更為外側、及前述框體2的 内側的流通空間P會發生從氣流Vs。其中，該等從氣流& 並非為前述翼部5或輪輕部4主動發生者，而是藉由使主氣 流Vm發生而被動發生者H由於前述翼部5使主氣流 7 201235569The direction of the 5 and οι/ & J main oblong angles of the rectangle, or oblong, relative to the direction of rotation is not, '' mouth, then the spokes 9 are not the active configuration of the airflow. In addition, this 丄.^月毛翼部5 series is formed only on the outer peripheral side of the above-mentioned frame 2, and is formed by the ring ==: wing 1〇. In this example, it consists of a wing around the axis. Therefore, the inner side of the inner side 11 of each of the outer peripherals 11 of the frame 2 is further inwardly formed. The second axial fan 1 is attached to the rotating shaft X of the electric motor, and is housed in the lower fan (10)'. The outer casing 13 of the electric field is inside the frame 2 on the inner side of the frame 2, that is, the inner side of the trajectory of the frame 2 in the respective wings. Further, an inflow of airflow is formed between the outer edge of the outer casing 13 and the inner edge of the front. However, the branch (4) required for installing a blower such as an electric fan is not accommodated inside the casing 2. The role of the embodiment of the child. When the sleeve fan L rotates around the rotation axis X, the main airflow Vme is generated by the wing portion 5, and the main airflow vm is divided into a spiral shape by the respective wing portions 1G. These main air flows VmM are continuously generated by the aforementioned wings (four), but each of the main airflows 1 is a region where the airflow is weak. On the other hand, when the wing portion 5 causes the main air catching Vm to occur, the airflow Vs is generated in the flow space P on the outer side of the wing portion 5 and inside the casing 2. Wherein, the slave airflow & is not actively generated by the wing portion 5 or the wheel light portion 4, but passively occurs by causing the main airflow Vm to occur. The main airflow is caused by the wing portion 5 201235569
Vm發生，藉此在該主氣流Vm的周圍產生較為低壓的區 域，因此周圍空氣朝向該低壓區域流通，藉此發生從氣流 Vs。接著’從氣流Vs係如上所示發生，因此大部分流入主 氣流Vm較弱（亦即較為低壓）的區域，少部分流入主氣流Vm 較強（亦即較為南壓）的區域。因此，由於從氣流Vs使主氣 流Vm的強弱緩和，因此主氣流Vm與從氣流Vs混合形成的 複合氣流Vc係成為強弱變化少且呈連續者。尤其，由於從 氣流Vs發生在主氣流Vm的外側與内侧，因此從氣流Vs可良 好緩和主氣流Vm的強弱變化。 其中，如前所述，前述外殼13在軸向視下為容納於前 述框體2的内側（亦即前述各翼1〇的内端丨丨所描繪的軌跡的 内側），在前述外殼13的外緣與前述框體2的内緣之間形成 有氣流的流入口 14，因此從氣流Vs並不會被前述外殼13妨 礙’而流入至前述流通空間P。藉此’複合氣流Vc係良好形 成。 如以上所示’本發明之軸流風扇1係具有：軸向兩端呈 開放的短筒狀框體2 ;及由設在該框體2的複數個翼10所構 成的翼部5，在比構成該翼部5的翼10的内端u更為内側， 形成有在伴隨著前述翼部5所發生的主氣流¥〇1而發生的從 氣流Vs流通的流通空間P，藉此從氣流Vs以緩和主氣流Vm 的強弱的方式流通，因此可得強弱變化少之呈連續的複合 氣流Vc者。 此外’本發明之軸流風扇1係在前述框體2的.中心部設 置軸套部3，並且設置由連接該軸套部3與前述體2的複數 8 201235569 個輪輻9所構成的輪輻部4,藉此，可以在前述框體2的内側 (亦即前述翼部5更為内側）不f主動發生斷續的氣流的狀態 下安裝在電動機旋轉。 此外，使用本發明之軸流風扇1的送風機12係使收容有 用以使前述軸流風扇1旋轉的電動機的外殼13，在前述軸流 風扇1的軸向視下為貫資上容納於前述框體2的範圍内（亦 即前述翼10的内端11所描繪的軌跡更為内側），藉此不合妨 礙從氣流Vs通過前述框體2的内側的流通空間p，可良好形 成複合氣流Vc者。 接著，根據第4圖至第6圖，說明本發明之第二實施形 態。21為本發明之軸流風扇。該軸流風扇21係具有框體22 及翼部23所構成。前述框體21係形成為軸向的兩端呈開放 的短圓筒狀。此外，在前述框體21固定有複數個永久磁石 24。此外，前述翼部23係僅在前述框體22的外周側，繞軸 等間距設置複數個翼部25而形成。在本例中係藉由繞轴以 0.2 7Γ (rad)間隔排列10片前述翼部25而構成。 接著，前述轴流風扇21係以前述框體22位於環狀外殼 26的外側的方式安裝在該環狀外殼26。該環狀外殼26係在 其内部設置環狀排列的定子27。接著，複數個前述永久磁 石24近接配置在該定子27的外側。藉此，固定有該等永久 磁石24的前述框體22本身即成為轉子28。接著，II由前述 定子27與轉子28形成電動機29。如上所示，構成藉由前述 電動機29使前述軸流風扇21旋轉的送風機3〇。此外，前述 環狀外殼26的内側，亦即前述各翼25的内端31更為内側成 9 201235569 為徒氣流Vs的流通空間p。 接著，說明本實施形態的作用。藉由對前述環狀外殼 26的定子27供給電力，使該定子27發生交變磁場。接著， 藉由該交變磁場，屬於前述轉子28的前述框體22，亦即前 述軸流風肩I 21即進行旋轉。若該軸流風扇21旋轉，藉由前 述翼部23即發生主氣流Vm。該主氣流Vm係藉由前述各翼 25分別形成為螺旋狀。該等主氣流Vm係藉由前述各翼25而 連續發生，但是各主氣流Vm間係成為氣流較弱的區域。另 一方面，若刖述翼部23使主氣流vm發生，在比前述翼部23 更為外側、及前述環狀外殼26的内側的流通空間p會發生從 氣流Vs。其中’該等從氣流Vs並不是前述翼部23主動發生 者，而是因為發生主氣流Vm而被動發生者。亦即，藉由前 述翼部23發生主氣流Vm ’會在該主氣流Vm的周圍產生成 為較為低壓的區域’因此周圍空氣會朝向該低壓區域流 動，藉此發生從氣流Vs。接著，從氣流Vs係如上所示發生， 因此大部分流入主氣流Vm較弱（亦即較為低壓）的區域，少 部分流入主氣流Vm較強（亦即較為高壓）的區域。因此，由 於從氣流Vs使主氣流Vm的強弱緩和，因此主氣流vm與從 氣流Vs混合形成的複合氣流Vc係成為強弱變化少且呈連續 者。尤其，從氣流Vs發生在主氣流Vm的外側及内側，因此 從氣流Vs可良好緩和主氣流Vm的強弱變化。 如以上所示，本發明之軸流風扇21係具有：軸向兩端 呈開放的短筒狀的框體22 ;及由設在該框體22的複數個翼 25所構成的°翼部23 ’在設在前述框體22的内側的環狀外殼 201235569 26的内側，亦即構成前述翼部23的前述翼25的内端31更為 内側，形成有伴隨著前述翼部23所發生的主氣流Vm而發生 的從氣流Vs流通的流通空間P，藉此從氣流Vs以缓和主氣流 Vm的強弱的方式流動，因此可得強弱變化少且呈連續的複 合氣流Vc者。 此外，使用本發明之軸流風扇21之送風機30係將前述 框體22作為轉子28，在該轉子28的内側設置環狀排列的定 子27，藉由該等轉子28及定子27來形成電動機29，藉此儘 可能排除妨礙在前述流通空間P，亦即前述框體22的内側流 通的從氣流Vs的要素，可平順地流通從氣流Vs。 接著’根據第7圖，說明本發明之第三實施形態。其中， 本實施形態的作用係依據上述第一實施形態 明。41係本發明之軸流風扇。該軸流風扇41係具有框體42、 軸套部43、輪輻部44、及翼部45所構成。前述框體42係形 成為軸向的兩端呈開放的短圓筒狀。此外，前述軸套部43 係位於前述框體42的中央部，並且在其中心具有用以安裝 在未圖不的電動機的旋轉軸的插入孔46 ^此外，前述輪輻 部4 4係用以在前述框體4 2的中心、部同軸保持前述軸套部4 3 ^。接著’前述輪紛M4係具有前輪_47及後輪輻部48 , 分別藉由繞料間距設置複數個輪輻49所構成。其十，前 述輪輪49係以由前述軸套部43減射方岐伸的方式所妒 成。接著’前述輪糾9係料面雜均相對旋轉方向/ ::角：的長方形、或長圓形，相對旋轉方向不呈傾斜。因 ’則述各輪糾9並非為絲使錢發生的構造。此外， « 201235569 前述翼部4 5係在前述框體4 2的外周側及内周側分別以繞軸 等間距設置複數個翼50所形成。藉此，比前述各翼50的内 端51更為内側成為從氣流V s的流通空間P。 其中’安裝有前述軸流風扇41之未圖示的外殼係在軸 向視下容納於前述各翼5 0的内端51所描繪的軌跡更為内 側。此外，在未圖示的前述外殼的外緣與各翼50的内端51 所描繪的軌跡之間形成有氣流的流入口。 接著，根據第8圖，說明本發明之第四實施形態。其中， 本實施形態的作用係依據上述第一及第三實施形態，因此 省略說明。61為本發明之軸流風扇。該軸流風扇61係具有 框體62、轴套部63、輪輻部64、及翼部65所構成。前述框 體62係形成為軸向的兩端呈開放的短圓筒狀。此外，前述 轴套部63餘於前述框體62的巾央部，並且在其中心具有 :以安裝在未圖示的電動機的旋轉軸的插入孔66。此外， 二述輪部64係用以將前述軸套部63同軸保持在前述框 62的中心邻|。垃戈 假 〜 σ 接者，前述輪輻部64係具有前輪輻部67金 $輪侧’分別燒軸等間距設置複數個_ 其中，前述輪輻69俜 係从由前述軸套部63朝放射方向延伸的 方綱面形狀一^ 傾斜。因此，前述各輪二=動：:轉方向不呈 此外，前述翼祕^並料线發生氣流的構造。 複數個翼物所形成。藉此，比前述^ 70的内端更為内 月!述各翼 $成為從氣流Vs的流通空間p。 12 201235569 其中，安裝有前述軸流風扇61之未圖示的外殼係在軸 向視下容納於比前述各翼70的内端71所描繪的軌跡更為内 側。此外，在未圖示的前述外殼的外緣與各翼70的内端71 所描繪的軌跡之間形成有氣流的流入口。 其中，本發明並非限定於以上之實施形態，在發明要 旨的範圍内可作各種變形實施。例如，在上述第一、第三、 第四實施形態中，係將輪輻的剖面形成為角圓長方形或長 圓形，但是若為其本身不會主動發生氣流的形狀，則亦可 為其他剖面形狀，例如圓形或橢圓形。此外，前述輪韓亦 可由轴套部相對放射方向呈傾斜。 I：圖式簡單說明3 第1圖係顯示本發明之第一實施形態之軸流風扇的外 觀圖，（a)係由軸向觀看的外觀圖，（b)係由軸直方向觀看的 外觀圖。 第2圖係該圖的A-A剖面圖。 第3圖係該圖之使用第一實施形態之轴流風扇的送風 機的動作說明圖。 第4圖係由顯示本發明之第二實施形態的軸流風扇及 使用該軸流風扇之送風機之軸向所觀看的外觀圖。 第5圖係該圖的B-B剖面圖。 第6圖係該圖的動作說明圖。 第7圖係顯示本發明之第三實施形態之軸流風扇之由 軸向所觀看的外觀圖。 . > 第8圖係顯示本發明之第四實施形態之軸流風扇之由 13 201235569 軸向所觀看的外觀圖。 【主要元件符號說明】 卜2卜4卜61…軸流風扇 13…外殼 2、22、42、62."框體 14…流入口 3、43、63…軸套部 15…支柱 4、44、64...輪輻部 26…環狀外殼 5、23、45、65...翼部 27...定子 6、46、66…插入孔 28...轉子 7、47、67···前輪輻部 29...電動機 8、48、68…後輪輻部 P...流通空間 9、49、69...輪輻 Vc...複合氣流 10、25、50、70…翼 Vm...主氣流 11、31、51、71 …内端 Vs...從氣流 12、30…送風機 X...旋轉軸 14Vm occurs, whereby a relatively low pressure region is generated around the main airflow Vm, so that ambient air flows toward the low pressure region, whereby the slave airflow Vs occurs. Then, the flow from the gas flow Vs occurs as described above, so that most of the flow into the main gas flow Vm is weak (i.e., relatively low pressure), and a small portion flows into the region where the main gas flow Vm is strong (i.e., relatively southward). Therefore, since the strength of the main airflow Vm is moderated from the airflow Vs, the combined airflow Vc formed by mixing the main airflow Vm and the airflow Vs is less continuous and strong. In particular, since the air flow Vs occurs on the outer side and the inner side of the main air flow Vm, the change in the strength of the main air flow Vm can be preferably moderated from the air flow Vs. As described above, the outer casing 13 is accommodated in the inner side of the casing 2 in the axial direction (that is, the inner side of the trajectory drawn by the inner end 前述 of each of the wings 1 ,), in the outer casing 13 Since the outer edge and the inner edge of the casing 2 form an inflow port 14 for the airflow, the airflow Vs does not interfere with the outer casing 13 and flows into the circulation space P. Thereby, the composite gas flow Vc is formed well. As described above, the axial flow fan 1 of the present invention has a short cylindrical casing 2 whose axial ends are open, and a wing portion 5 composed of a plurality of wings 10 provided in the casing 2, The flow space P that flows from the airflow Vs, which is generated along with the main airflow 〇1 generated by the wing portion 5, is formed on the inner side of the inner end u of the wing 10 constituting the wing portion 5, thereby the airflow from the airflow Vs. Since Vs circulates so as to alleviate the strength of the main airflow Vm, it is possible to obtain a continuous composite airflow Vc with little change in strength. Further, the axial flow fan 1 of the present invention is provided with a boss portion 3 at a center portion of the frame body 2, and a spoke portion composed of a plurality of 8, 2012, 569 spokes 9 connecting the boss portion 3 and the body 2 4. Thereby, the motor can be rotated in a state in which the inside of the casing 2 (that is, the inside of the wing portion 5 is further inside) is not actively generated in the intermittent airflow. Further, the blower 12 using the axial flow fan 1 of the present invention is configured such that the outer casing 13 for accommodating a motor for rotating the axial flow fan 1 is slidably received in the frame in the axial direction of the axial flow fan 1 In the range of the body 2 (that is, the trajectory drawn by the inner end 11 of the wing 10 is further inside), the flow space p passing through the inside of the frame 2 from the airflow Vs is not hindered, and the composite airflow Vc can be formed well. . Next, a second embodiment of the present invention will be described based on Figs. 4 to 6 . 21 is an axial flow fan of the present invention. The axial fan 21 has a casing 22 and a wing portion 23. The frame body 21 is formed in a short cylindrical shape in which both ends in the axial direction are open. Further, a plurality of permanent magnets 24 are fixed to the frame body 21. Further, the wing portion 23 is formed by providing a plurality of wing portions 25 at equal intervals around the shaft only on the outer peripheral side of the frame body 22. In this example, 10 pieces of the above-mentioned wing portions 25 are arranged at intervals of 0.2 7 Γ (rad) around the axis. Next, the axial fan 21 is attached to the annular casing 26 such that the casing 22 is located outside the annular casing 26. The annular casing 26 is provided with a stator 27 arranged in a ring shape inside. Next, a plurality of the aforementioned permanent magnets 24 are disposed adjacent to the outside of the stator 27. Thereby, the frame body 22 to which the permanent magnets 24 are fixed is the rotor 28. Next, the motor 29 is formed by the stator 27 and the rotor 28 described above. As described above, the air blower 3 that rotates the axial fan 21 by the electric motor 29 is constructed. Further, the inner side of the annular casing 26, that is, the inner end 31 of each of the wings 25 is formed to have a flow space p of 20123569 as the airflow Vs. Next, the action of this embodiment will be described. By supplying electric power to the stator 27 of the annular casing 26, an alternating magnetic field is generated in the stator 27. Then, the frame body 22 belonging to the rotor 28, i.e., the axial wind shoulder I 21, is rotated by the alternating magnetic field. When the axial fan 21 rotates, the main airflow Vm is generated by the wing portion 23 described above. The main air flow Vm is formed in a spiral shape by each of the wings 25 described above. The main airflows Vm are continuously generated by the respective wings 25, but each of the main airflows Vm is a region where the airflow is weak. On the other hand, when the wing portion 23 causes the main airflow vm to occur, the airflow Vs occurs in the flow space p outside the wing portion 23 and inside the annular casing 26. Wherein the slave airflow Vs is not actively generated by the aforementioned wing portion 23, but passively occurs because the main airflow Vm occurs. That is, the main airflow Vm' generated by the wing portion 23 generates a region which is a relatively low pressure around the main airflow Vm. Therefore, ambient air flows toward the low pressure region, whereby the slave airflow Vs occurs. Then, the flow Vs occurs as described above, so that most of the flow into the main gas flow Vm is weak (i.e., relatively low pressure), and a small portion flows into the region where the main flow Vm is strong (i.e., relatively high pressure). Therefore, since the strength of the main airflow Vm is moderated from the airflow Vs, the composite airflow Vc formed by mixing the main airflow vm and the airflow Vs has a small change in strength and is continuous. In particular, since the airflow Vs occurs outside and inside the main airflow Vm, the change in the strength of the main airflow Vm can be favorably moderated from the airflow Vs. As described above, the axial flow fan 21 of the present invention has a frame body 22 having a short cylindrical shape in which both ends in the axial direction are open, and a wing portion 23 composed of a plurality of wings 25 provided in the frame body 22. 'on the inner side of the annular casing 201235569 26 provided inside the casing 22, that is, the inner end 31 of the wing 25 constituting the wing portion 23 is formed inside, and the main body is formed along with the wing portion 23 The flow space P that flows from the airflow Vs, which is generated by the airflow Vm, flows from the airflow Vs to alleviate the strength of the main airflow Vm. Therefore, it is possible to obtain a continuous composite airflow Vc with little change in strength. Further, the blower 30 using the axial flow fan 21 of the present invention has the frame 22 as the rotor 28, and the stator 27 which is annularly arranged inside the rotor 28, and the motor 29 is formed by the rotor 28 and the stator 27. In this way, the element from the airflow Vs that hinders the flow space P, that is, the inside of the casing 22, is prevented from being distributed as much as possible, and the flow Vs can be smoothly flowed. Next, a third embodiment of the present invention will be described based on Fig. 7. Here, the operation of this embodiment is based on the first embodiment described above. 41 is an axial flow fan of the present invention. The axial fan 41 includes a frame body 42, a boss portion 43, a spoke portion 44, and a wing portion 45. The frame body 42 is formed in a short cylindrical shape in which both ends in the axial direction are open. Further, the boss portion 43 is located at a central portion of the frame body 42 and has an insertion hole 46 for mounting on a rotating shaft of a motor (not shown) at the center thereof. Further, the aforementioned spoke portion 44 is used for The center and the portion of the frame body 42 are coaxially held by the boss portion 43^. Next, the aforementioned wheel M4 has a front wheel _47 and a rear spoke portion 48, respectively, which are formed by setting a plurality of spokes 49 at a winding pitch. Tenth, the above-described wheel 49 is formed by the above-described sleeve portion 43 being defocused. Then, the aforementioned wheel correction 9 is a rectangular or oblong shape with respect to the direction of rotation/:: angle of the material, and the direction of rotation is not inclined. Because of the fact that each round of correction 9 is not a structure for making money. Further, « 201235569, the wing portion 45 is formed by providing a plurality of wings 50 on the outer circumferential side and the inner circumferential side of the frame body 4 2 at equal intervals around the axis. Thereby, the inner side of the inner end 51 of each of the wings 50 becomes the flow space P from the airflow Vs. The outer casing (not shown) to which the axial fan 41 is attached is disposed on the inner side of the trajectory drawn by the inner end 51 of each of the wings 50 in the axial direction. Further, an inflow port of the airflow is formed between the outer edge of the outer casing (not shown) and the locus drawn by the inner end 51 of each of the wings 50. Next, a fourth embodiment of the present invention will be described based on Fig. 8 . However, the operation of this embodiment is based on the first and third embodiments described above, and thus the description thereof will be omitted. 61 is the axial flow fan of the present invention. The axial fan 61 has a frame body 62, a boss portion 63, a spoke portion 64, and a wing portion 65. The frame 62 is formed in a short cylindrical shape in which both ends in the axial direction are open. Further, the boss portion 63 is left in the center portion of the frame body 62, and has an insertion hole 66 at a center thereof for attachment to a rotating shaft of a motor (not shown). Further, the wheel portion 64 is used to hold the boss portion 63 coaxially in the center of the frame 62. The spurs are spliced, and the spokes 64 have a front spoke portion 67. The gold wheel side is provided with a plurality of equal intervals. The spokes 69 are extended from the sleeve portion 63 toward the radial direction. The shape of the square face is tilted. Therefore, the above-mentioned respective wheels are two-moving: the direction of rotation is not present. In addition, the structure of the airflow is generated by the aforementioned wing. A plurality of wings are formed. Thereby, it is more internal than the inner end of the above-mentioned ^70, and the respective wings $ become the flow space p from the airflow Vs. 12 201235569 Here, the casing (not shown) to which the axial fan 61 is attached is housed in the axial direction and is located on the inner side of the trajectory drawn by the inner end 71 of each of the wings 70. Further, an inflow port of the airflow is formed between the outer edge of the outer casing (not shown) and the locus drawn by the inner end 71 of each of the wings 70. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. For example, in the first, third, and fourth embodiments described above, the cross section of the spoke is formed into a rectangular or oblong shape, but other shapes may be used if the shape of the airflow does not actively occur. Shape, such as a circle or an ellipse. In addition, the aforementioned wheel Han can also be inclined by the sleeve portion relative to the radial direction. I. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view showing an axial flow fan according to a first embodiment of the present invention, (a) is an external view viewed from the axial direction, and (b) is an appearance viewed from an axial direction. Figure. Figure 2 is a cross-sectional view taken along the line A-A of the figure. Fig. 3 is an explanatory view showing the operation of the air blower using the axial flow fan of the first embodiment. Fig. 4 is an external view showing an axial flow fan showing a second embodiment of the present invention and an axial direction of a blower using the axial flow fan. Figure 5 is a cross-sectional view taken along the line B-B of the figure. Fig. 6 is an explanatory view of the operation of the figure. Fig. 7 is an external view showing the axial flow fan of the third embodiment of the present invention as viewed in the axial direction. Fig. 8 is an external view of the axial flow fan of the fourth embodiment of the present invention as viewed from the axial direction of 201235569. [Description of main component symbols] Bu 2 Bu 4 Bu 61... Axial fan 13... Enclosures 2, 22, 42, 62. Frames 14 Inflow ports 3, 43, 63... Bushings 15... Pillars 4, 44 64... spokes 26... annular casings 5, 23, 45, 65... wings 27... stators 6, 46, 66... insertion holes 28... rotors 7, 47, 67... Front spokes 29...motors 8, 48, 68...rear spokes P...circulation spaces 9,49,69...spokes Vc...composite airflows 10,25,50,70...wings Vm.. Main airflow 11, 31, 51, 71 ... inner end Vs ... from air flow 12, 30... blower X... rotating shaft 14