WO2021017153A1 - Pale de ventilateur à écoulement axial, ventilateur à écoulement axial et climatiseur - Google Patents

Pale de ventilateur à écoulement axial, ventilateur à écoulement axial et climatiseur Download PDF

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Publication number
WO2021017153A1
WO2021017153A1 PCT/CN2019/109056 CN2019109056W WO2021017153A1 WO 2021017153 A1 WO2021017153 A1 WO 2021017153A1 CN 2019109056 W CN2019109056 W CN 2019109056W WO 2021017153 A1 WO2021017153 A1 WO 2021017153A1
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WO
WIPO (PCT)
Prior art keywords
point
blade
line
center point
axial flow
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Application number
PCT/CN2019/109056
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English (en)
Chinese (zh)
Inventor
凌敬
王锡栋
刘乾坤
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2021017153A1 publication Critical patent/WO2021017153A1/fr

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Classifications

    • 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
    • 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

Definitions

  • This application relates to the technical field of air conditioning, and in particular, to an axial flow fan, an axial fan having the axial flow fan, and an air conditioner having the axial fan.
  • the axial flow blade in the related art includes a hub and two or more blades with equal or unequal spacing arranged on the hub.
  • the blade trailing edge of the axial flow blade is flush, integrally protruding or integrally recessed.
  • This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes an axial flow blade, which has the advantages of small fluid kinetic energy loss and low working noise.
  • the application also proposes an axial flow fan with the axial flow blades.
  • the application also proposes an air conditioner with the axial fan.
  • an embodiment of the first aspect of the present application proposes an axial flow fan blade.
  • the axial flow fan blade includes a hub and a blade, the blade is connected to the hub, and the trailing edge of the blade
  • the side has a gap
  • the orthographic projection of the central axis of the hub in a plane perpendicular to the central axis is the center point
  • the orthographic projection of the outer edge of the blade in the plane is the same as the trailing edge side of the blade
  • the orthographic projection in the plane has a point of intersection, wherein the orthographic projection of the contour line of the gap in the plane has a start point close to the hub, an end point far away from the hub, and are located at the start point and the end point
  • the distance between the transition point and the line connecting the starting point and the end point is greater than the distance between the remaining points in the orthographic projection of the contour line of the gap in the plane and the straight line, The angle between the line between the center point and the transition point and the line between the center point and the starting
  • the axial flow fan blade according to the embodiment of the present application has the advantages of small fluid kinetic energy loss and low working noise.
  • axial fan blades may also have the following additional technical features:
  • the line between the center point and the intersection is located between the line between the center point and the starting point and the line between the center point and the transition point.
  • the angle between the line between the center point and the intersection point and the line between the center point and the transition point is ⁇ , and the ⁇ is greater than or equal to the ⁇ .
  • the angle between the line between the center point and the end point and the line between the center point and the starting point is ⁇ , and the ⁇ is less than or equal to the ⁇ .
  • the length of the line connecting the center point and the starting point is 70-110 mm, and the length of the line connecting the center point and the end point is 170-220 mm.
  • the length of the line connecting the center point and the starting point is 92 mm, and the length of the line connecting the center point and the end point is 195 mm.
  • the diameter of an imaginary circle with the center point as the center and an orthographic projection of the contour line of the gap on the plane is D
  • the imaginary circle is
  • the arc length of the line connecting the start point and the end point and the orthographic projection of the notch in the plane is H, and the H first increases and then decreases with the increase of the D .
  • the ratio of the H to the D is greater than or equal to 0, and the ratio of the H to the D is less than or equal to 0.25.
  • the plurality of blades are arranged at intervals along the circumferential direction of the hub.
  • the shape of the notch of each blade is the same; and/or the opening direction of the notch of each blade is the same.
  • connection between the trailing edge side of the blade and the outer edge of the blade and the connection between the notch and the trailing edge side of the blade are all arc transitions.
  • an axial flow fan is provided, and the axial flow fan includes the axial flow fan blade according to the embodiment of the first aspect of the present application.
  • the axial flow fan according to the embodiment of the present application by using the axial flow fan blade according to the embodiment of the first aspect of the present application, has the advantages of small fluid kinetic energy loss and low operating noise.
  • an air conditioner is provided, and the air conditioner includes the axial fan according to the embodiment of the second aspect of the present application.
  • the air conditioner according to the embodiment of the present application by using the axial flow fan according to the embodiment of the second aspect of the present application, has the advantages of small fluid kinetic energy loss and low operating noise.
  • Fig. 1 is a schematic structural diagram of an axial flow fan blade according to an embodiment of the present application.
  • Fig. 2 is an enlarged view of D in Fig. 1.
  • Fig. 3 is a schematic structural diagram of an axial flow fan according to an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of an axial flow fan according to an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of an axial flow fan blade according to another embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of an axial flow fan according to another embodiment of the present application.
  • Fig. 12 is a diagram of the relationship between the power of the axial flow blade and the air volume according to an embodiment of the present application.
  • Fig. 13 is a diagram of the relationship between noise and air volume of an axial flow fan according to an embodiment of the present application.
  • the axial flow fan 1 according to the embodiment of the present application will be described below with reference to the drawings.
  • the axial flow fan 1 includes a hub 100 and a blade 200.
  • the blade 200 is connected to the hub 100.
  • the trailing edge side of the blade 200 has a notch 210.
  • the orthographic projection of the center axis of the hub 100 in a plane perpendicular to the center axis is the center point E, and the outer edge of the blade 200 is in the plane.
  • the orthographic projection of and the orthographic projection of the trailing edge side of the blade 200 in the plane has an intersection Q, where the orthographic projection of the contour line of the notch 210 in the plane has a starting point K close to the hub 100 and a distance away from the hub 100
  • the distance between the transition point M and the line connecting the start point K and the end point N is greater than the orthographic projection of the contour line of the gap 210 in the plane
  • the distance between the remaining points in the line and the line, the angle between the line between the center point E and the transition point M and the line between the center point E and the starting point K is ⁇
  • the angle between the line connecting E and the starting point K is ⁇
  • the ⁇ is greater than or equal to the ⁇ .
  • the angle between the straight section EM and the straight section EK is ⁇
  • the angle between the straight section EQ and the straight section EK is ⁇
  • the ⁇ is greater than or equal to the ⁇
  • the blade 200 includes a leading edge and a trailing edge.
  • the leading edge of the blade 200 is the windward side edge of the blade 200.
  • the trailing edge of the blade 200 is the edge of the blade 200 opposite to the leading edge of the blade 200.
  • the blade 200 further includes an outer edge and a root.
  • the outer edge of the blade 200 is the edge away from the wheel carrier 100, and the root of the blade 200 is the part of the blade where the wheel carrier 100 is connected.
  • the trailing edge of the blade 200 is connected to the outer edge of the blade 200 and the root of the blade 200, wherein the root of the blade 200 is connected to the drum 100, and the outer edge of the blade 200 is the free end of the blade 200.
  • the notch 210 is provided on the trailing edge side of the blade 200.
  • the airflow can be avoided.
  • the large vortex generated at the trailing edge of the blade 200 can not only prevent the large kinetic energy loss from the airflow, thereby avoiding excessive power consumption of the fan, playing the role of energy saving and environmental protection, reducing the operating cost of the fan, but also avoiding The fan produces a lot of noise during the working process, which is convenient to improve the performance of the fan, prolong the service life of the fan, and improve the user's comfort.
  • ⁇ is convenient to improve the anti-vortex performance of the notch 210, and avoid the excitation of the airflow and the trailing edge of the blade 200, thereby improving the delivery of the axial flow blade 1.
  • the wind effect improves the working efficiency of the axial flow fan 1, and can further reduce the working noise of the axial flow fan 1 and improve the use performance of the axial flow fan 1.
  • the weight of the axial flow fan 1 can be reduced to a certain extent, and the production cost of the axial flow fan 1 can be reduced.
  • the axial flow fan 1 according to the embodiment of the present application has the advantages of small fluid kinetic energy loss and low operating noise.
  • the axial flow fan 1 according to specific embodiments of the present application will be described below with reference to the drawings.
  • the axial flow fan 1 includes a hub 100 and a blade 200.
  • the angle between the line between the center point E and the transition point M and the line between the center point E and the starting point K is ⁇
  • the center point E and The angle between the line of the intersection Q and the line of the center point E and the starting point K is ⁇
  • the ⁇ is greater than the ⁇
  • the angle between the straight section EM and the straight section EK is ⁇
  • the angle between the straight section EQ and the straight section EK is ⁇
  • the ⁇ is greater than the ⁇
  • the line between the center point E and the intersection Q is located between the line between the center point E and the starting point K and the line between the center point E and the transition point M.
  • the straight line segment EQ is located between the straight line segment E K and the straight line segment EM.
  • the angle between the line between the center point E and the intersection Q and the line between the center point E and the transition point M is ⁇ , and the ⁇ is greater than Or equal to the ⁇ .
  • the angle between the straight line segment EQ and the straight line segment EM is ⁇ , and the ⁇ is greater than or equal to the ⁇ .
  • the angle between the line between the center point E and the intersection Q and the line between the center point E and the transition point M is ⁇ , and the ⁇ is greater than the ⁇ .
  • the angle between the straight line segment EQ and the straight line segment EM is ⁇ , and the ⁇ is greater than the ⁇ .
  • the angle between the line between the center point E and the end point N and the line between the center point E and the start point K is ⁇ , and the ⁇ is less than or equal to the ⁇ .
  • the angle between the straight line segment EN and the straight line segment EK is ⁇ , and the ⁇ is less than or equal to the ⁇ .
  • the angle between the line between the center point E and the end point N and the line between the center point E and the start point K is ⁇ , and the ⁇ is smaller than the ⁇ .
  • the angle between the straight section EN and the straight section EK is ⁇ , and the ⁇ is smaller than the ⁇ .
  • the length of the line connecting the center point E and the start point K is 70-110 mm
  • the length of the line connecting the center point E and the end point N is 170-220 mm
  • the length of the straight section EK is 70-110 mm
  • the length of the straight section EN is 170-220 mm.
  • the length of the line connecting the center point E and the start point K is 92 mm
  • the length of the line connecting the center point E and the end point N is 195 mm.
  • the radius of an imaginary circle with the center point E as the center and passing through the starting point K is 92 mm
  • the radius of the imaginary circle with the center point E as the center and passing through the end point N is 92 mm.
  • the axial flow fan 1 is composed of a hub 100 and three equally spaced blades 200 arranged on the hub 100.
  • the trailing edge side of each blade 200 is provided with exactly the same shape and size. Gap 210.
  • the diameter of an imaginary circle centered at the center point E and at any point on the orthographic projection of the contour line of the gap 210 in the plane is D, wherein the imaginary circle is connected by the starting point K and the ending point N
  • the arc length intercepted by the orthographic projection of the line and the contour line of the gap 210 in the plane is H, and the H first increases and then decreases as the D increases.
  • the H has the largest arc length somewhere on the straight line KN. This facilitates the formation of a C-shaped notch 210 on the side of the trailing edge of the blade 200, and further facilitates accurate control of the shape of the notch 210.
  • the ratio of the H to the D is greater than or equal to 0, and the ratio of the H to the D is less than or equal to 0.25. In this way, it is convenient to control the proportional relationship between the H and the D, so as to further facilitate the control of the size of the H to ensure that the notch 210 has a suitable depth range.
  • the ratio of the H to the D is greater than 0 and less than 0.25.
  • FIG. 1 there are multiple blades 200, and the multiple blades 200 are arranged at intervals along the circumferential direction of the hub 100. In this way, it is convenient to increase the air supply capacity of the axial flow fan 1 and improve the working efficiency of the axial flow fan 1.
  • the blades 200 may be arranged at equal or unequal intervals along the circumferential direction of the hub 100.
  • the shape of the notch 210 of each blade 200 is the same; and/or the opening direction of the notch 210 of each blade 200 is the same. In this way, it is convenient to reduce the power consumption of the axial flow fan 1 and reduce the working noise of the axial flow fan 1, and can also reduce the weight of the axial flow fan 1 to a certain extent.
  • the shape of the notch 210 of each blade 200 is the same, and the opening direction of the notch 210 of each blade 200 is the same.
  • the size of the notch 210 on each blade 200 may be the same or different.
  • connection between the trailing edge side of the blade 200 and the outer edge of the blade 200 and the connection between the notch 210 and the trailing edge side of the blade 200 are all arc transitions. In this way, it is convenient to reduce the flow resistance of the air flow when flowing through the blade 200, and it is further convenient to improve the air supply efficiency of the axial flow blade 1.
  • the axial flow fan 1 includes a hub 100 and a blade 200.
  • the blade 200 is connected to the hub 100.
  • the trailing edge side of the blade 200 has a notch 210.
  • the orthographic projection of the center axis of the hub 100 in a plane perpendicular to the center axis is the center point E, and the outer edge of the blade 200 is in the plane.
  • the orthographic projection of and the orthographic projection of the trailing edge side of the blade 200 in the plane have an intersection Q,
  • the orthographic projection of the contour line of the notch 210 in the plane has a starting point K close to the hub 100, an ending point N away from the hub 100, and a transition point M between the starting point K and the ending point N.
  • the transition point M The distance between the line connecting the starting point K and the end point N is greater than the distance between the remaining points in the orthographic projection of the contour line of the gap 210 in the plane and the straight line, the line connecting the center point E and the transition point M and the center point.
  • the angle between the line between E and the starting point K is ⁇
  • the angle between the line between the central point E and the intersection Q and the line between the central point E and the starting point K is ⁇
  • the ⁇ is greater than or equal to ⁇ .
  • the line connecting the center point E and the intersection point Q is located between the line connecting the center point E and the starting point K and the line connecting the center point E and the transition point M.
  • the angle between the line between the center point E and the intersection Q and the line between the center point E and the transition point M is ⁇ , and the ⁇ is greater than or equal to the ⁇ .
  • the angle between the line between the center point E and the end point N and the line between the center point E and the start point K is ⁇ , and the ⁇ is less than or equal to the ⁇ .
  • the length of the line connecting the center point E and the start point K is 70-110 mm, and the length of the line connecting the center point E and the end point N is 170-220 mm.
  • the diameter of an imaginary circle centered at the center point E and at any point on the orthographic projection of the contour line of the gap 210 on the plane is D, where the imaginary circle is defined by the line connecting the start point K and the end point N and the gap 210
  • the arc length intercepted by the orthographic projection of the contour line in the plane is H, and the H first increases and then decreases as the D increases.
  • the ratio of the H to the D is greater than or equal to 0, and the ratio of the H to the D is less than or equal to 0.25.
  • each blade 200 There are multiple blades 200, and the multiple blades 200 are arranged at intervals along the circumferential direction of the hub 100.
  • the shape of the notch 210 of each blade 200 is the same; and/or the opening direction of the notch 210 of each blade 200 is the same.
  • the connection between the trailing edge side of the blade 200 and the outer edge of the blade 200 and the connection between the notch 210 and the trailing edge side of the blade 200 are all arc transitions.
  • the axial flow fan according to the embodiment of the present application includes the axial flow fan 1 according to the above embodiment of the present application.
  • the axial flow fan according to the embodiment of the present application by using the axial flow fan 1 according to the above embodiment of the present application, has the advantages of low fluid kinetic energy loss and low operating noise.
  • the air conditioner according to the embodiment of the present application is described below.
  • the air conditioner according to the embodiment of the present application includes the axial flow fan according to the foregoing embodiment of the present application.
  • the air conditioner according to the embodiment of the present application by using the axial flow fan according to the above-mentioned embodiment of the present application, has the advantages of small fluid kinetic energy loss and low operating noise.
  • first and second may explicitly or implicitly include one or more of these features.
  • plural means two or more.
  • first feature of the second feature can include the first and second features in direct contact, or can include the first and second features not in direct contact but through them Another feature contact between.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the level of the first feature is higher than The second feature.
  • connection should be interpreted broadly unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be interpreted broadly unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.

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

Abstract

L'invention concerne une pale de ventilateur à écoulement axial (1), un ventilateur à écoulement axial et un climatiseur. La pale de ventilateur à écoulement axial (1) comprend un moyeu (100) et des pales (200) ; une partie côté bord de fuite de chaque pale (200) est pourvue d'une encoche (210) ; la projection orthographique de l'axe central du moyeu (100) dans un plan perpendiculaire à l'axe central est un point central ; la projection orthographique du bord externe de la pale (200) dans le plan et la projection orthographique de la partie côté bord de fuite de la pale (200) dans le plan ont un point d'intersection ; la projection orthographique de la ligne de contour de l'encoche (210) dans le plan a un point de départ, un point de fin et un point de transition ; l'angle inclus entre une ligne reliant le point central et le point de transition et une ligne reliant le point central et le point de départ est α ; l'angle inclus entre une ligne reliant le point central et le point d'intersection et une ligne reliant le point central et le point de départ est β, α étant supérieur ou égal à β.
PCT/CN2019/109056 2019-07-31 2019-09-29 Pale de ventilateur à écoulement axial, ventilateur à écoulement axial et climatiseur WO2021017153A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910700366.2 2019-07-31
CN201910700366.2A CN110345106A (zh) 2019-07-31 2019-07-31 轴流风叶、轴流风机和空调器

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WO2021017153A1 true WO2021017153A1 (fr) 2021-02-04

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PCT/CN2019/109056 WO2021017153A1 (fr) 2019-07-31 2019-09-29 Pale de ventilateur à écoulement axial, ventilateur à écoulement axial et climatiseur

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CN113757168A (zh) * 2020-06-01 2021-12-07 广东美的白色家电技术创新中心有限公司 扇叶、风机、空调室外机和空调系统

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WO2018124773A1 (fr) * 2016-12-28 2018-07-05 한온시스템 주식회사 Ventilateur à écoulement axial
CN207879695U (zh) * 2017-12-28 2018-09-18 奥克斯空调股份有限公司 一种空调器室外机的风扇及空调器室外机
CN109058161A (zh) * 2018-09-27 2018-12-21 美的集团股份有限公司 轴流风轮及空调室外机
CN109915411A (zh) * 2019-04-24 2019-06-21 特灵空调系统(中国)有限公司 轴流风机及具有其的空调

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CN204572556U (zh) * 2015-02-12 2015-08-19 美的集团武汉制冷设备有限公司 空调器室外机和空调器
CN206144845U (zh) * 2016-11-09 2017-05-03 广东美的暖通设备有限公司 轴流风轮和具有轴流风轮的空调器
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Publication number Priority date Publication date Assignee Title
CN202732467U (zh) * 2012-06-29 2013-02-13 珠海格力电器股份有限公司 空调、轴流风机及其轴流风叶
CN103511339A (zh) * 2012-06-29 2014-01-15 珠海格力电器股份有限公司 空调、轴流风机及其轴流风叶
CN204175642U (zh) * 2014-09-30 2015-02-25 美的集团武汉制冷设备有限公司 轴流风轮和具有其的空调器
WO2018124773A1 (fr) * 2016-12-28 2018-07-05 한온시스템 주식회사 Ventilateur à écoulement axial
CN207879695U (zh) * 2017-12-28 2018-09-18 奥克斯空调股份有限公司 一种空调器室外机的风扇及空调器室外机
CN109058161A (zh) * 2018-09-27 2018-12-21 美的集团股份有限公司 轴流风轮及空调室外机
CN109915411A (zh) * 2019-04-24 2019-06-21 特灵空调系统(中国)有限公司 轴流风机及具有其的空调

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