TW202244397A - Fan blades, electric fan, and circulator - Google Patents

Fan blades, electric fan, and circulator Download PDF

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TW202244397A
TW202244397A TW111108787A TW111108787A TW202244397A TW 202244397 A TW202244397 A TW 202244397A TW 111108787 A TW111108787 A TW 111108787A TW 111108787 A TW111108787 A TW 111108787A TW 202244397 A TW202244397 A TW 202244397A
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aforementioned
fan
angle
rotary
degrees
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TW111108787A
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TWI844829B (en
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金井茉莉
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日商西羅卡電器有限公司
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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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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

Abstract

The present invention relates to a propeller fan, an electric fan and a circulating fan, which can efficiently supply air. The propeller fan rotates about a rotating shaft and blows air in a first direction parallel to the rotating shaft, and is provided with: a hub that rotates about the rotating shaft; and a plurality of blades provided on an outer peripheral surface of the hub. Each of the plurality of blades includes a first portion engaged with the outer peripheral surface of the hub and a second portion farther from the rotating shaft than the first portion. Each of the first portion and the second portion has a shape in which a rear portion in a rotation direction is bent toward the first direction with respect to a front portion, and a bending angle of the rear portion with respect to the front portion is such that a bending angle of the second portion is larger than a bending angle of the first portion.

Description

旋葉扇、風扇、及循環風扇Rotary blade fan, fan, and circulation fan

本發明涉及旋葉扇、風扇、及循環風扇。The invention relates to a rotary blade fan, a fan, and a circulation fan.

在專利文獻1中公開了風扇、循環風扇所使用的旋葉扇的形狀。 先前技術文獻 專利文獻 Patent Document 1 discloses the shape of a rotary blade fan used in a fan and a circulation fan. prior art literature patent documents

專利文獻1：日本專利第6143725號公報Patent Document 1: Japanese Patent No. 6143725

發明所要解決的問題The problem to be solved by the invention

在風扇、循環風扇等設備所使用的旋葉扇，為了降低該設備的功耗和/或噪音而謀求有效率地送風。Rotary blade fans used in equipment such as fans and circulation fans are designed to efficiently blow air in order to reduce power consumption and/or noise of the equipment.

因此，本發明的目的在於提供能夠有效率地送風的旋葉扇。 用於解決問題的方法 Therefore, an object of the present invention is to provide a rotary blade fan capable of blowing air efficiently. method used to solve the problem

為了實現上述目的，作為本發明的一個方面的旋葉扇是以旋轉軸為中心進行旋轉並向與前述旋轉軸平行的第一方向送風的旋葉扇，前述旋葉扇的特徵在於，具備：轂部，其以前述旋轉軸為中心進行旋轉；以及在前述轂部的外周面設置的多個葉片，前述多個葉片各自包括與前述轂部的前述外周面接合的第一部分以及與前述第一部相比遠離前述旋轉軸的第二部分，前述第一部分和第二部分各自具有旋轉方向的後部相對於前部而朝向前述第一方向彎曲的形狀，前述後部相對於前述前部的彎曲角度，是前述第二部分的前述彎曲角度大於前述第一部分的前述彎曲角度。 發明的效果 In order to achieve the above object, a rotary vane fan as one aspect of the present invention is a rotary vane fan that rotates around a rotary shaft and blows air in a first direction parallel to the rotary shaft, and the rotary vane fan is characterized in that it has: a hub rotating around the rotating shaft; and a plurality of blades provided on the outer peripheral surface of the hub, each of which includes a first portion engaged with the outer peripheral surface of the hub and a first portion connected to the first The first part and the second part each have a shape in which the rear part in the rotation direction is bent toward the first direction relative to the front part, and the bending angle of the rear part relative to the front part is The aforementioned bending angle of the aforementioned second portion is greater than the aforementioned bending angle of the aforementioned first portion. The effect of the invention

根據本發明，能夠提供例如能夠有效率地送風的旋葉扇。According to the present invention, for example, a rotary fan capable of blowing air efficiently can be provided.

以下，參照附圖詳細說明實施型態。此外，以下的實施型態並非用於限定申請專利範圍涉及的發明，另外，發明也不需要實施型態中說明的全部特徵的組合。也可以將實施型態中說明的多個特徵中的兩個以上特徵任意組合。另外，對相同或同樣的結構標注相同附圖標記，省略重複的說明。Hereinafter, embodiments will be described in detail with reference to the drawings. In addition, the following embodiments are not intended to limit the inventions related to the scope of patent claims, and the invention does not require combinations of all the features described in the embodiments. It is also possible to arbitrarily combine two or more of the features described in the embodiments. In addition, the same reference numerals are assigned to the same or similar configurations, and overlapping descriptions are omitted.

對本發明的一實施型態的旋葉扇10進行說明。本實施型態的旋葉扇10是用於將氣體(例如空氣)進行送風的風扇，能夠應用於風扇(包括掌上型風扇)和/或循環風扇等設備。以下，對將本實施型態的旋葉扇10應用(搭載)於風扇1的例子進行說明。A rotary vane fan 10 according to an embodiment of the present invention will be described. The rotary blade fan 10 of this embodiment is a fan for blowing gas (such as air), and can be applied to devices such as fans (including palm-sized fans) and/or circulation fans. Hereinafter, an example in which the rotary blade fan 10 of this embodiment is applied (mounted) to the fan 1 will be described.

圖1示出應用了本實施型態的旋葉扇10的風扇1的外觀。風扇1例如能具備：旋葉扇10；電機部2，其對旋葉扇10進行旋轉驅動；罩部3，其覆蓋旋葉扇10；以及控制部4。電機部2具有安裝有旋葉扇10的轉動軸2a以及對該轉動軸2a進行旋轉驅動的電機2b，由電機2b對轉動軸2a進行旋轉驅動，由此能夠以轉動軸2a的旋轉軸A為中心來對旋葉扇10進行旋轉驅動。罩部3是為了防止用戶接觸旋葉扇10而覆蓋旋葉扇10的構件，罩部3設置有用於使氣體通過的多個開口。本實施型態的罩部3構成為，具有將旋葉扇10的前側覆蓋的前側罩3a以及設置於電機部2並將旋葉扇10的後側覆蓋的後側罩3b，將前側罩3a與後側罩3b連接由此覆蓋旋葉扇10整體。另外，控制部4例如包括處理器、記憶體等，藉由控制向電機部2的供電來控制旋葉扇10的旋轉。FIG. 1 shows the appearance of a fan 1 to which a rotary blade fan 10 according to this embodiment is applied. The fan 1 can include, for example, a rotary fan 10 ; a motor unit 2 that rotationally drives the rotary fan 10 ; a cover unit 3 that covers the rotary fan 10 ; and a control unit 4 . The motor unit 2 has a rotating shaft 2a on which the rotary blade fan 10 is mounted and a motor 2b for rotationally driving the rotating shaft 2a. The center drives the rotary blade fan 10 to rotate. The cover part 3 is a member which covers the rotary fan 10 in order to prevent a user from touching the rotary fan 10, and the cover part 3 is provided with the several opening through which gas passes. The cover part 3 of this embodiment is comprised by having the front side cover 3a which covers the front side of the rotary blade fan 10, and the rear side cover 3b which is provided in the motor part 2 and covers the rear side of the rotary blade fan 10, and front side cover 3a It is connected to the rear side cover 3b to thereby cover the entire rotary fan 10 . In addition, the control unit 4 includes, for example, a processor, a memory, etc., and controls the rotation of the rotary fan 10 by controlling the power supply to the motor unit 2 .

這裡，在圖1的風扇1中，轉動軸2a構成為電機2b的一部分，但不限於此，也可以經由傳動帶或齒輪等動力傳遞機構將電機2b的動力傳遞至轉動軸2a，由此對轉動軸2a進行旋轉驅動。另外，圖1的風扇1是用安裝構件5將旋葉扇10安裝於電機部2的轉動軸2a的結構，但也可以是不使用安裝構件5而將旋葉扇10安裝於轉動軸2a的結構。Here, in the fan 1 of FIG. 1 , the rotating shaft 2a constitutes a part of the motor 2b, but it is not limited to this, and the power of the motor 2b may be transmitted to the rotating shaft 2a through a power transmission mechanism such as a belt or a gear, thereby controlling the rotation. The shaft 2a is driven in rotation. In addition, the fan 1 in FIG. 1 has a structure in which the rotary blade fan 10 is mounted on the rotating shaft 2a of the motor part 2 by using the mounting member 5, but it may also be a structure in which the rotary blade fan 10 is mounted on the rotating shaft 2a without using the mounting member 5. structure.

[旋葉扇的結構] 接著，對本實施型態的旋葉扇10的結構進行說明。圖2是示出本實施型態的旋葉扇10的結構例的圖。圖2的(a)示出旋葉扇10的前視圖，圖2的(b)示出旋葉扇10的立體圖，圖2的(c)示出旋葉扇10的側視圖。以下，將與旋葉扇10的旋轉軸A平行的方向作為Z軸方向並且將在與Z軸方向平行的面內相互正交的兩個軸方向作為X軸方向與Y軸方向來進行說明。在以下的說明中記載為“X軸方向”的情況下，能將其定義為包含+X方向和-X方向。對於“Y軸方向”和“Z軸方向”也一樣。另外，在圖中，用虛線箭頭表示旋葉扇10的旋轉方向Dr。 [Structure of rotary blade fan] Next, the structure of the rotary blade fan 10 of this embodiment is demonstrated. Fig. 2 is a diagram showing a configuration example of the rotary fan 10 according to the present embodiment. 2( a ) shows a front view of the rotary fan 10 , FIG. 2( b ) shows a perspective view of the rotary fan 10 , and FIG. 2( c ) shows a side view of the rotary fan 10 . Hereinafter, the direction parallel to the rotation axis A of the rotary fan 10 is referred to as the Z-axis direction, and two axial directions perpendicular to each other in a plane parallel to the Z-axis direction are referred to as the X-axis direction and the Y-axis direction. When described as "X-axis direction" in the following description, it can be defined as including +X direction and -X direction. The same applies to "Y-axis direction" and "Z-axis direction". In addition, in the figure, the rotation direction Dr of the rotary fan 10 is shown by the broken line arrow.

如上所述，本實施型態的旋葉扇10構成為，被安裝於電機部2的轉動軸2a，並且以該轉動軸2a的旋轉軸A為中心進行旋轉由此向與旋轉軸A平行的第一方向(本實施型態中為+Z方向)送風。旋葉扇10具備：轂部11，其以旋轉軸A為中心進行旋轉；以及在轂部11的外周面設置的多個葉片12。轂部11是在電機部2的轉動軸2a安裝的部分，在本實施型態的情況下，轂部11形成為圓柱狀，並且設置有供轉動軸2a貫通的貫通孔11a。另外，多個葉片12是以旋轉軸A為中心並藉由旋葉扇10(轂部11)旋轉來向前方(第一方向(+Z方向))送風的構件。將多個葉片12各自構成為板狀，以能夠藉由旋轉來向前方送風的方式相對於與旋轉軸A垂直的面而傾斜地配置。本實施型態的旋葉扇10由五個葉片12構成，但葉片12的個數不限於五個。As described above, the rotary blade fan 10 of this embodiment is configured to be attached to the rotating shaft 2a of the motor part 2, and rotate around the rotating shaft A of the rotating shaft 2a to move to a direction parallel to the rotating shaft A. Air is blown in the first direction (+Z direction in this embodiment). The rotary blade fan 10 includes: a hub portion 11 that rotates about a rotation axis A; and a plurality of blades 12 provided on the outer peripheral surface of the hub portion 11 . The hub part 11 is a part attached to the rotating shaft 2a of the motor part 2. In this embodiment, the hub part 11 is formed in a cylindrical shape and has a through hole 11a through which the rotating shaft 2a passes. In addition, the plurality of blades 12 is a member that blows air forward (first direction (+Z direction)) when the rotary blade fan 10 (hub portion 11) rotates around the rotation axis A. Each of the plurality of blades 12 is configured in a plate shape, and is arranged obliquely with respect to a plane perpendicular to the rotation axis A so that air can be blown forward by rotation. The rotary blade fan 10 of this embodiment is composed of five blades 12, but the number of blades 12 is not limited to five.

如圖2的(a)所示，多個葉片12各自包括與轂部11的外周面接合的第一部分P 1以及與第一部分P 1相比遠離旋轉軸A的第二部分P 2，第一部分P 1和第二部分P 2雙方具有相對於旋轉方向Dr的前部(前端部)使後部(後端部)朝向+Z方向彎曲的形狀。而且，旋轉方向Dr的後部相對於前部的彎曲角度構成為，第二部分P 2的彎曲角度大於第一部分P 1的彎曲角度。在本實施型態的情況下，各葉片12包括第一面12a以及第二面12b，第一面12a作為旋轉方向Dr的前部，第二面12b作為旋轉方向Dr的後部。第一面12a相對於與旋轉軸A垂直的面(XY面)傾斜。另外，第二面12b是與第一面12a連續的面，設置於旋轉方向Dr的第一面的後側，以相對於第一面12a而向+Z方向撓曲的方式傾斜。藉由這樣構成各葉片12，能夠隨著旋葉扇10的旋轉而有效率地向旋葉扇10的前方(+Z方向)送風，因而能夠降低功耗和噪音。 As shown in (a) of FIG. 2 , each of the plurality of blades 12 includes a first portion P 1 engaged with the outer peripheral surface of the hub portion 11 and a second portion P 2 farther from the rotation axis A than the first portion P 1 . Both the P 1 and the second portion P 2 have a shape in which the rear portion (rear end portion) is bent toward the +Z direction with respect to the front portion (front end portion) in the rotational direction Dr. Furthermore, the bending angle of the rear portion relative to the front portion in the rotation direction Dr is configured such that the bending angle of the second portion P2 is larger than the bending angle of the first portion P1. In the case of this embodiment, each blade 12 includes a first surface 12a and a second surface 12b, the first surface 12a is the front portion in the rotation direction Dr, and the second surface 12b is the rear portion in the rotation direction Dr. The first surface 12a is inclined with respect to a plane (XY plane) perpendicular to the rotation axis A. As shown in FIG. In addition, the second surface 12b is a surface continuous with the first surface 12a, is provided on the rear side of the first surface in the rotation direction Dr, and is inclined so as to bend in the +Z direction with respect to the first surface 12a. By configuring each blade 12 in this way, air can be efficiently blown forward (+Z direction) of the rotary fan 10 as the rotary fan 10 rotates, thereby reducing power consumption and noise.

另外，各葉片12具有以旋轉軸A為中心的半徑方向(放射方向)的端部朝向-Z方向(與第一方向相反的第二方向)彎曲的形狀。在本實施型態的情況下，如圖2的(a)所示，各葉片12在半徑方向的端部具有第三面12c。第三面12c是與第一面12a連續的面，設置於第一面12a的半徑方向外側，以相對於第一面12a而向-Z方向彎曲(撓曲)的方式傾斜。藉由在各葉片12設置該第三面12c，尤其在噪音方面能夠更有利。In addition, each blade 12 has a shape in which an end in a radial direction (radial direction) centered on the rotation axis A is curved toward the −Z direction (second direction opposite to the first direction). In the case of this embodiment, as shown in FIG. 2( a ), each blade 12 has a third surface 12c at an end in the radial direction. The third surface 12c is a surface continuous with the first surface 12a, is provided on the radially outer side of the first surface 12a, and is inclined so as to bend (bend) in the -Z direction with respect to the first surface 12a. By providing the third surface 12c on each blade 12, it can be advantageous especially in terms of noise.

以下，對一個葉片12的具體形狀進行說明。 圖3是用於說明葉片12的形狀的圖。圖3的(a)示出從前方觀察旋葉扇10的圖，圖3的(b)~(e)分別示出圖3的(a)的各位置X 1~X 4處的葉片12的截面形狀。圖3的(b)示出位置X 1處的葉片12的截面形狀，圖3的(c)示出位置X 2處的葉片12的截面形狀。此外，圖3的(d)示出位置X 3處的葉片12的截面形狀，圖3的(e)示出位置X 4處的葉片12的截面形狀。位置X 1是圖2的(a)所示的第一部分P 1所包含的位置，位置X 2~X 4(特別是位置X 2~X 3)中的至少一個是圖2的(a)所示的第二部分P 2所包含的位置。在此，各位置X 1~X 4在本實施型態中被定義為X軸方向的位置，但也可以被理解為以旋轉軸A為中心的半徑方向的位置。另外，在本實施型態中示出各位置X 1~X 4處的YZ截面，但也可以理解為沿著旋轉方向Dr的截面，即使這樣理解，也能成為同樣的葉片12的截面形狀。 Hereinafter, the specific shape of one blade 12 will be described. FIG. 3 is a diagram for explaining the shape of the blade 12 . (a) of FIG. 3 shows a view of the rotary blade fan 10 viewed from the front, and (b) to (e) of FIG. Section shape. (b) of FIG. 3 shows the cross-sectional shape of the blade 12 at the position X1, and (c) of FIG. 3 shows the cross-sectional shape of the blade 12 at the position X2. In addition, FIG. 3( d ) shows the cross-sectional shape of the blade 12 at the position X3 , and FIG. 3( e ) shows the cross-sectional shape of the blade 12 at the position X4 . The position X 1 is the position included in the first part P 1 shown in (a ) of FIG . The second part P2 shown contains the positions. Here, the respective positions X 1 to X 4 are defined as positions in the X-axis direction in this embodiment, but may also be understood as positions in the radial direction around the rotation axis A. In addition, in the present embodiment, the YZ cross section at each position X 1 to X 4 is shown, but it can also be understood as a cross section along the rotation direction Dr, and even if it is understood in this way, the same cross-sectional shape of the blade 12 can be obtained.

如圖3的(b)~(d)所示，本實施型態的葉片12的旋轉方向Dr的前部(第一面12a)構成為，相對於與旋轉軸A垂直的面(XY面)傾斜，並且相對於該面的角度α(傾斜角度)隨著遠離旋轉軸A而減小。即，葉片12的前部(第一面12a)以位置X 2處的角度α 2小於位置X 1處的角度α 1、位置X 3處的角度α 3小於位置X 2處的角度α 2的方式傾斜(扭轉)。作為一個例子，包含位置X 1的第一部分P 1處的角度α較佳設定在15度~25度的範圍內，包含位置X 2~X 3中的至少一個的第二部分P 2處的角度α較佳設定在3度~20度的範圍內。另外，圖3的(e)所示的位置X 4處的角度α 4與位置X 3處的角度α 3為相同程度。 As shown in (b)-(d) of FIG. is inclined, and the angle α (angle of inclination) with respect to the face decreases with distance from the axis A of rotation. That is, the front portion (first surface 12a) of the blade 12 is smaller than the angle α 2 at the position X 2 at the angle α 1 at the position X 1 , and the angle α 3 at the position X 3 is smaller than the angle α 2 at the position X 2 Way to tilt (twist). As an example, the angle α at the first part P1 including the position X1 is preferably set in the range of 15 degrees to 25 degrees, and the angle at the second part P2 including at least one of the positions X2 to X3 α is preferably set within the range of 3 degrees to 20 degrees. In addition, the angle α4 at the position X4 shown in (e) of FIG. 3 is about the same as the angle α3 at the position X3 .

如圖3的(b)~(d)所示，葉片12的旋轉方向Dr的後部(第二面12b)構成為，相對於前部(第一面12a)而彎曲，並且相對於該前部的角度β(彎曲角度)隨著遠離旋轉軸A而增大。即，葉片12的後部(第二面12b)以位置X 2處的角度β 2大於位置X 1處的角度β 1、位置X 3處的角度β 3大於位置X 2處的角度β 2的方式，相對於第一面12a而彎曲(撓曲)。作為一個例子，包含位置X 1的第一部分P 1處的角度β較佳設定在5度~15度的範圍內，包含位置X 2~X 3中的至少一個的第二部分P 2處的角度β較佳設定在15度~35度的範圍內。另外，圖3的(e)所示的位置X 4處的角度β 4與位置X 3處的角度β 3為相同程度。 As shown in (b) to (d) of FIG. 3 , the rear portion (second surface 12b) of the blade 12 in the direction of rotation Dr is configured to be curved relative to the front portion (first surface 12a), and is curved relative to the front portion. The angle β (bending angle) of increases with distance from the axis A of rotation. That is, the rear portion ( second face 12b) of the blade 12 is in such a manner that the angle β2 at the position X2 is greater than the angle β1 at the position X1, and the angle β3 at the position X3 is greater than the angle β2 at the position X2. , is bent (flexed) with respect to the first surface 12a. As an example, the angle β at the first part P1 including the position X1 is preferably set in the range of 5 degrees to 15 degrees, and the angle at the second part P2 including at least one of the positions X2~ X3 β is preferably set within the range of 15 degrees to 35 degrees. In addition, the angle β4 at the position X4 shown in (e) of FIG. 3 is at the same level as the angle β3 at the position X3 .

在此，葉片12的後部(第二面12b)較佳構成為，隨著遠離旋轉軸A而葉片12的厚度增厚。參照圖3的(b)~(d)，位置X 2處的後部的厚度T 2與位置X 1處的後部的厚度T 1相同，但位置X 3處的後部的厚度T 3比位置X 1處的後部的厚度T 1厚。藉由採用該結構，能夠提高葉片12的剛性，降低旋葉扇10旋轉時葉片12的振動，因此，能夠減少振動引起的送風紊亂，並且在降低功耗以及降低雜訊方面也有利。 Here, the rear portion (second surface 12 b ) of the blade 12 is preferably configured such that the thickness of the blade 12 increases as the distance from the rotation axis A increases. Referring to (b)~(d) of Fig. 3, the thickness T 2 of the rear portion at the position X 2 is the same as the thickness T 1 of the rear portion at the position X 1 , but the thickness T 3 of the rear portion at the position X 3 is larger than that at the position X 1 The thickness at the rear part is T1 thick. By adopting this structure, the rigidity of the blade 12 can be increased, and the vibration of the blade 12 can be reduced when the rotary fan 10 rotates. Therefore, the disturbance of air blowing caused by the vibration can be reduced, and it is also advantageous in reducing power consumption and noise.

另外，圖3的(e)中示出了包含第一面12a的半徑方向外側的端部(第三面12c)的位置X 4處的截面。該端部(以下有時表述為外側端部)是從第一面13a向旋轉方向Dr突出的部分，並且如上所述，以相對於第一面12a而向-Z方向彎曲(屈曲)的方式傾斜。以下，參照圖4對外側端部(第三面12c)的結構進行說明。 In addition, (e) of FIG. 3 shows a cross section at position X4 including the radially outer end portion (third surface 12c) of the first surface 12a. This end portion (hereinafter sometimes referred to as an outer end portion) is a portion protruding from the first surface 13a in the rotation direction Dr, and is bent (bent) in the -Z direction with respect to the first surface 12a as described above. tilt. Hereinafter, the configuration of the outer end portion (third surface 12c) will be described with reference to FIG. 4 .

圖4是用於說明葉片12的形狀的圖。圖4的(a)示出從前方觀察旋葉扇10的圖，圖4的(b)~(d)分別示出圖4的(a)的各位置Y 1~Y 3處的葉片12的截面形狀(XZ截面形狀)。圖4的(b)示出位置Y 1處的葉片12的截面形狀，圖4的(c)示出位置Y 2處的葉片12的截面形狀。另外，圖4的(d)示出位置Y 3處的葉片12的截面形狀。在此，各位置Y 1~Y 3在本實施型態中定義為Y軸方向的位置，但也可以被理解為以旋轉軸A為中心的角度。另外，在本實施型態中示出各位置Y 1~Y 3處的XZ截面，但也可以理解為沿著以旋轉軸A為中心的半徑方向的截面，即使這樣理解，也能成為同樣的葉片12的截面形狀。 FIG. 4 is a diagram for explaining the shape of the blade 12 . (a) of FIG. 4 shows a view of the rotary blade fan 10 viewed from the front, and (b) to (d) of FIG. Cross-sectional shape (XZ cross-sectional shape). (b) of FIG. 4 shows the cross-sectional shape of the blade 12 at the position Y1 , and (c) of FIG. 4 shows the cross-sectional shape of the blade 12 at the position Y2 . In addition, (d) of FIG. 4 shows the cross-sectional shape of the blade 12 at the position Y3 . Here, the respective positions Y 1 to Y 3 are defined as positions in the Y-axis direction in this embodiment, but they can also be understood as angles centered on the rotation axis A. In addition, in this embodiment, the XZ cross section at each position Y 1 to Y 3 is shown, but it can also be understood as a cross section along the radial direction centered on the rotation axis A, and even if it is understood in this way, it can be the same The cross-sectional shape of the blade 12.

本實施型態的葉片12的外側端部(第三面12c)以相對於第一面12a而以角度θ向-Z方向彎曲(撓曲)的方式傾斜。具體地，在位置Y 1，不包含向-Z方向彎曲的外側端部，但在位置Y 2，相對於第一面12a而外側端部以角度θ 2向-Z方向彎曲，在位置Y 3，相對於第一面12a而外側端部以角度θ 3向-Z方向彎曲。角度θ 2與角度θ 3為相同程度，作為一個例子，角度θ較佳設定在20度~30度的範圍內。 The outer end portion (third surface 12c) of the blade 12 in this embodiment is inclined so as to be bent (bent) in the -Z direction at an angle θ with respect to the first surface 12a. Specifically, at position Y 1 , the outer end portion that is bent in the -Z direction is not included, but at position Y 2 , the outer end portion is bent at an angle θ 2 to the -Z direction with respect to the first surface 12a, and at position Y 3 , with respect to the first surface 12a, the outer end portion is bent in the -Z direction at an angle θ3 . The angle θ 2 is the same as the angle θ 3 , and as an example, the angle θ is preferably set within a range of 20 degrees to 30 degrees.

[效果] 接著，對由於本實施型態的旋葉扇10的形狀的效果進行說明。在此，作為與本實施型態的旋葉扇10的比較對象，使用圖5所示的以往的旋葉扇20。圖5是示出以往的旋葉扇20的結構例的圖。圖5的(a)示出以往的旋葉扇20的前視圖，圖5的(b)示出以往的旋葉扇20的立體圖。以往的旋葉扇20是一般廣泛普及的風扇，具備在風扇1的轉動軸2a安裝的轂部21以及在轂部21的外周面設置的多個葉片22。以往的旋葉扇20具有與本實施型態的旋葉扇10相同的大小，並且具有與本實施型態的旋葉扇10相同個數的葉片22。但是，在以往的旋葉扇20中，沒有設置本實施型態的旋葉扇10的上述第二面12b和第三面12c。 [Effect] Next, the effects due to the shape of the rotary blade fan 10 of this embodiment will be described. Here, as a comparison object with the rotary fan 10 of this embodiment, the conventional rotary fan 20 shown in FIG. 5 is used. FIG. 5 is a diagram showing a configuration example of a conventional rotary fan 20 . 5( a ) shows a front view of a conventional rotary fan 20 , and FIG. 5( b ) shows a perspective view of the conventional rotary fan 20 . The conventional rotary blade fan 20 is a generally widely used fan, and includes a hub portion 21 attached to the rotating shaft 2 a of the fan 1 and a plurality of blades 22 provided on the outer peripheral surface of the hub portion 21 . The conventional rotary fan 20 has the same size as the rotary fan 10 of the present embodiment, and has the same number of blades 22 as the rotary fan 10 of the present embodiment. However, in the conventional rotary fan 20, the above-mentioned second surface 12b and third surface 12c of the rotary fan 10 of this embodiment are not provided.

圖6~圖7示出本實施型態的旋葉扇10與以往的旋葉扇20的比較結果。圖6是示出功耗[W]相對於旋葉扇的轉速[RPM(Rotations Per Minute)]的圖，圖7是示出噪音[dBA]相對於風量[m 3/min]的圖。如圖6~圖7所示，本實施型態的旋葉扇10具有上述形狀，因而與以往的旋葉扇20相比較而言，能夠相對於轉速而降低功耗(高效率)以及相對於風量而降低噪音(靜音)。 6 to 7 show comparison results between the rotary fan 10 of this embodiment and the conventional rotary fan 20 . FIG. 6 is a graph showing power consumption [W] versus rotational speed [RPM (Rotations Per Minute)] of a rotary fan, and FIG. 7 is a graph showing noise [dBA] versus air volume [m 3 /min]. As shown in FIGS. 6 to 7, the rotary blade fan 10 of this embodiment has the above-mentioned shape, so compared with the conventional rotary blade fan 20, it is possible to reduce power consumption (high efficiency) with respect to the rotation speed and to reduce the power consumption compared with the conventional rotary blade fan 20. Reduce noise (quiet) due to air volume.

本發明不限定於上述實施型態，能夠在不脫離發明的精神和範圍的情況下進行各種變更和變形。The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention.

10:旋葉扇 11:轂部 12:葉片 12a:第一面 12b:第二面 12c:第三面 10:Rotary fan 11: Hub 12: blade 12a: First side 12b: Second side 12c: The third side

[圖1]是應用了本實施型態的旋葉扇的風扇的外觀圖。 [圖2]是示出本實施型態的旋葉扇的結構例的圖。 [圖3]是用於說明本實施型態的旋葉扇的葉片的形狀的圖。 [圖4]是用於說明本實施型態的旋葉扇的葉片的形狀的圖。 [圖5]是示出以往的旋葉扇的結構例的圖。 [圖6]是示出本實施型態的旋葉扇與以往的旋葉扇的比較結果(相對於轉速的功耗)的圖。 [圖7]是示出本實施型態的旋葉扇與以往的旋葉扇的比較結果(相對於風量的噪音)的圖。 [ Fig. 1 ] is an external view of a fan to which the rotary blade fan of this embodiment is applied. [FIG. 2] It is a figure which shows the structural example of the rotary blade fan of this embodiment. [FIG. 3] It is a figure for demonstrating the shape of the blade of the rotary vane fan of this embodiment. [FIG. 4] It is a figure for demonstrating the shape of the blade of the rotary vane fan of this embodiment. [FIG. 5] It is a figure which shows the structural example of the conventional rotary blade fan. [ Fig. 6 ] is a diagram showing a comparison result (power consumption with respect to rotational speed) between the rotary blade fan according to the present embodiment and a conventional rotary blade fan. [FIG. 7] It is a figure which shows the comparison result (noise with respect to air volume) of the rotary vane fan of this embodiment, and the conventional rotary vane fan.

10:旋葉扇 10:Rotary fan

11:轂部 11: Hub

11a:貫通孔 11a: Through hole

12:葉片 12: blade

12a:第一面 12a: First side

12b:第二面 12b: Second side

12c:第三面 12c: The third side

A:旋轉軸 A: axis of rotation

Dr:旋轉方向 Dr: direction of rotation

P1:第一部分 P 1 : first part

P2:第二部分 P 2 : Second part

Claims (8)

一種旋葉扇，以旋轉軸為中心進行旋轉，並向與前述旋轉軸平行的第一方向送風，前述旋葉扇的特徵在於，具備： 轂部，其以前述旋轉軸為中心進行旋轉；以及 在前述轂部的外周面設置的多個葉片， 前述多個葉片各自包括與前述轂部的前述外周面接合的第一部分以及與前述第一部相比遠離前述旋轉軸的第二部分， 前述第一部分和第二部分各自具有旋轉方向的後部相對於前部而朝向前述第一方向彎曲的形狀， 前述後部相對於前述前部的彎曲角度，是前述第二部分的前述彎曲角度大於前述第一部分的前述彎曲角度。 A rotary blade fan that rotates around a rotating shaft and blows air in a first direction parallel to the aforementioned rotating shaft. The aforementioned rotary blade fan is characterized in that it has: a hub that rotates about the aforementioned rotating shaft; and a plurality of blades provided on the outer peripheral surface of the hub, each of the aforementioned plurality of blades includes a first portion engaged with the aforementioned outer peripheral surface of the aforementioned hub portion and a second portion farther away from the aforementioned rotating shaft than the aforementioned first portion, The aforementioned first portion and the second portion each have a shape in which the rear portion in the rotation direction is bent toward the aforementioned first direction relative to the front portion, The bending angle of the aforementioned rear portion relative to the aforementioned front portion is such that the aforementioned bending angle of the aforementioned second portion is larger than the aforementioned bending angle of the aforementioned first portion. 如請求項1所述的旋葉扇，其中， 前述第一部分的前述彎曲角度在5度~15度的範圍內， 前述第二部分的前述彎曲角度在15度~35度的範圍內。 The rotary blade fan as claimed in claim 1, wherein, The aforementioned bending angle of the aforementioned first part is within the range of 5 degrees to 15 degrees, The aforementioned bending angle of the aforementioned second part is in the range of 15 degrees to 35 degrees. 如請求項1所述的旋葉扇，其中， 前述第二部分的前述後部的厚度比前述第一部分的前述後部的厚度厚。 The rotary blade fan as claimed in claim 1, wherein, The thickness of the aforementioned rear portion of the aforementioned second portion is thicker than the thickness of the aforementioned rear portion of the aforementioned first portion. 如請求項1所述的旋葉扇，其中， 在前述第一部分以及前述第二部分的各部分，前述旋轉方向的前述前部相對於與前述旋轉軸垂直的面傾斜， 前述前部相對於前述面的傾斜角度，是前述第二部分的前述傾斜角度小於前述第一部分的前述傾斜角度。 The rotary blade fan as claimed in claim 1, wherein, In each of the first portion and the second portion, the front portion in the rotation direction is inclined with respect to a plane perpendicular to the rotation axis, The angle of inclination of the front portion relative to the surface is such that the angle of inclination of the second portion is smaller than the angle of inclination of the first portion. 如請求項4所述的旋葉扇，其中， 前述第一部分的前述傾斜角度在15度~25度的範圍內， 前述第二部分的前述傾斜角度在3度~20度的範圍內。 The rotary blade fan as claimed in item 4, wherein, The aforementioned angle of inclination of the aforementioned first part is within the range of 15 degrees to 25 degrees, The aforementioned inclination angle of the aforementioned second part is in the range of 3 degrees to 20 degrees. 如請求項1所述的旋葉扇，其中， 前述多個葉片各自具有以前述旋轉軸為中心的半徑方向的端部朝向與前述第一方向相反的第二方向彎曲的形狀。 The rotary blade fan as claimed in claim 1, wherein, Each of the plurality of blades has a shape in which an end in a radial direction centered on the rotation axis is bent toward a second direction opposite to the first direction. 一種風扇，其特徵在於， 具備請求項1至6中的任一項所述的旋葉扇。 A fan, characterized in that, The rotary vane fan described in any one of Claims 1 to 6 is provided. 一種循環風扇，其特徵在於， 具備請求項1至6中的任一項所述的旋葉扇。 A circulation fan, characterized in that, The rotary vane fan described in any one of Claims 1 to 6 is provided.
TW111108787A 2021-03-17 2022-03-10 Fan blades, electric fan, and circulator TWI844829B (en)

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JP2021043606A JP7165433B2 (en) 2021-03-17 2021-03-17 Propeller Fans, Fans, and Circulators
JP2021-043606 2021-03-17

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TW202244397A true TW202244397A (en) 2022-11-16
TWI844829B TWI844829B (en) 2024-06-11

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