WO2018232838A1

WO2018232838A1 - Wind wheel, fan and refrigeration equipment

Info

Publication number: WO2018232838A1
Application number: PCT/CN2017/095346
Authority: WO
Inventors: 赵紫生; 薛玮飞; 蔡序杰; 王波; 梁健巧
Original assignee: 广东美的制冷设备有限公司
Priority date: 2017-06-23
Filing date: 2017-07-31
Publication date: 2018-12-27

Abstract

A wind wheel (100), a fan and refrigeration equipment. The wind wheel (100) comprises a hub (10); the hub (10) comprises an inner wheel part (1), an outer wheel part (2), and a plurality of blades (20); a part of the inner wheel part (1) is recessed in a direction towards an air outlet side so as to define a recessed part, and the inner wheel part (1) is provided with an axle hole (11) applicable for a motor shaft to penetrate through; the outer wheel part (2) surrounds the outer side of the inner wheel part (1) and is connected to the peripheral edge of the inner wheel part (1); the plurality of blades (20) are separately connected to the peripheral wall of the outer wheel part (2); the recessed depth of the recessed part is h, and 4 mm<=h<=6 mm. By using the wind wheel, the fan with the wind wheel, and the refrigeration equipment, an effective coverage area between the blades and an air guide ring of the refrigeration equipment can be increased, the air supply volume of the blades is increased, and the working efficiency of the wind wheel, the fan with the wind wheel, and the refrigeration equipment is improved.

Description

风轮、风机及制冷设备Wind wheel, fan and refrigeration equipment

技术领域Technical field

本发明涉及制冷技术领域，尤其是涉及一种风轮、风机及制冷设备。The invention relates to the field of refrigeration technology, in particular to a wind wheel, a fan and a refrigeration device.

背景技术Background technique

相关技术中，制冷设备的风轮与导风圈的有效覆盖面积小，风轮的送风量少，工作效率低。In the related art, the effective coverage area of the wind wheel and the air guiding ring of the refrigeration device is small, the air supply volume of the wind wheel is small, and the working efficiency is low.

发明内容Summary of the invention

本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种风轮，该风轮有利于增大出风量。The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a wind wheel that is advantageous for increasing the amount of air.

本发明还提出一种包括上述风轮的风机。The invention also proposes a fan comprising the above described wind wheel.

本发明还提出一种包括上述风机的制冷设备。The invention also proposes a refrigeration apparatus comprising the above described fan.

根据本发明实施例的风轮，所述风轮的轴向两侧分别为迎风侧和出风侧，所述风轮包括：轮毂，所述轮毂包括：内轮部，所述内轮部的一部分沿着朝向所述出风侧的方向凹入以限定出凹入部，所述内轮部上设有适于电机轴穿过的轴孔；外轮部，所述外轮部环绕在所述内轮部的外侧且连接至所述内轮部的外周沿；多个叶片，所述多个叶片间隔开地连接至所述外轮部的外周壁。其中，所述凹入部的凹入深度为h，所述h满足：4mm≤h≤6mm。According to the wind wheel of the embodiment of the present invention, the axial sides of the wind wheel are respectively a windward side and an air outlet side, and the wind wheel includes: a hub, the hub includes: an inner wheel portion, and the inner wheel portion a portion is recessed in a direction toward the air outlet side to define a recessed portion, the inner wheel portion is provided with a shaft hole adapted to pass through a motor shaft, and an outer wheel portion surrounding the inner wheel An outer side of the portion and connected to an outer peripheral edge of the inner wheel portion; a plurality of blades spaced apart from the outer peripheral wall of the outer wheel portion. Wherein, the concave portion has a concave depth of h, and the h satisfies: 4 mm ≤ h ≤ 6 mm.

根据本发明实施例的风轮，通过使得内轮部的一部分沿着朝向出风侧的方向凹入以限定出凹入部，同时将凹入部的凹入深度限制为4mm≤h≤6mm，这样有利于缩小凹入部的迎风面与内轮部的非凹入部分的迎风面之间的距离，有利于叶片的设置在外轮部的邻近迎风侧的一侧，从而当风轮应用在风机，风机应用在制冷设备中时，有利于增加叶片与制冷设备的导风圈之间的有效覆盖面积，使得叶片从迎风侧捕捉到更多的气流流向出风侧，增大叶片20的送风风量，提高风轮的工作效率，而且增强了叶片的可装配性，保证了风叶安装的可靠性，同时可减小空气流入叶片的方向与叶片形成的正值冲角，有效控制叶片的工作点在失速区域以下。A wind wheel according to an embodiment of the present invention defines a concave portion by recessing a portion of the inner wheel portion in a direction toward the air outlet side, while limiting the concave depth of the concave portion to 4 mm ≤ h ≤ 6 mm, thus Conducive to narrowing the distance between the windward surface of the concave portion and the windward surface of the non-recessed portion of the inner wheel portion, which is advantageous for the blade to be disposed on the side adjacent to the windward side of the outer wheel portion, so that when the wind wheel is applied to the fan, the fan application In the refrigeration equipment, it is beneficial to increase the effective coverage area between the blade and the air guiding ring of the refrigeration device. The blade captures more airflow from the windward side to the air outlet side, increases the air supply volume of the blade 20, improves the working efficiency of the wind wheel, and enhances the assemblability of the blade, thereby ensuring the reliability of the blade installation. At the same time, the direction of the air flowing into the blade and the positive angle of attack formed by the blade can be reduced, and the working point of the blade is effectively controlled below the stall region.

根据本发明的一些实施例，所述内轮部包括：连接部，所述连接部的一部分沿着朝向所述出风侧的方向凹入以限定出所述凹入部，所述凹入部上设有在其厚度方向方贯穿其的第一通孔；配合部，所述配合部设在所述连接部的出风面上且所述配合部上设有第二通孔，所述第二通孔正对所述第一通孔设置；其中，所述第二通孔和所述第一通孔共同限定出所述轴孔，所述外轮部连接至所述连接部的外周沿。According to some embodiments of the present invention, the inner wheel portion includes: a connecting portion, a portion of the connecting portion is recessed in a direction toward the air outlet side to define the recessed portion, the recessed portion is provided a first through hole penetrating therethrough in a thickness direction thereof; a mating portion, the mating portion is disposed on an air outlet surface of the connecting portion, and the mating portion is provided with a second through hole, the second pass The hole is disposed to the first through hole; wherein the second through hole and the first through hole collectively define the shaft hole, and the outer wheel portion is connected to an outer peripheral edge of the connecting portion.

具体地，所述连接部包括：圆盘段，所述圆盘段上设有所述第一通孔，所述配合部位于所述圆盘段的出风面上；第一连接段，所述第一连接段的第一端连接至所述圆盘段的外周沿，所述第一连接段的第二端在朝向迎风侧的方向上沿着朝向远离所述轴孔的中心轴线的方向倾斜延伸；第二连接段，所述第二连接段的第一端连接至所述第一连接段的第二端且所述第二连接段的第二端沿径向向外延伸，所述外轮部连接至所述第二连接段的第二端。Specifically, the connecting portion includes: a disk segment, the disk segment is provided with the first through hole, and the fitting portion is located on an air outlet surface of the disk segment; a first end of the first connecting section is connected to an outer peripheral edge of the disc segment, and a second end of the first connecting section is in a direction toward the windward side in a direction away from a central axis of the shaft hole a second connecting section, the first end of the second connecting section is connected to the second end of the first connecting section, and the second end of the second connecting section extends radially outward, The outer wheel portion is coupled to the second end of the second connecting segment.

进一步地，所述第一连接段的延伸方向与所述轴孔的中心轴线之间的夹角为α，α满足：30°≤α≤60°。Further, an angle between the extending direction of the first connecting section and the central axis of the shaft hole is α, and α satisfies: 30° ≤ α ≤ 60°.

根据本发明的一些实施例，与多个所述叶片相切的圆的半径为D，所述外轮部的外周壁所在圆柱面的直径为d，所述D和所述d满足：0.2≤d/D≤0.3According to some embodiments of the present invention, the radius of the circle tangential to the plurality of the blades is D, the diameter of the cylindrical surface of the outer peripheral wall of the outer wheel portion is d, and the D and the d satisfy: 0.2 ≤ d /D≤0.3

可选地，d/D＝0.24。Optionally, d/D = 0.24.

根据本发明的一些实施例，所述外轮部的出风端上设有多个缺口，多个所述缺口沿所述外轮部的周向方向间隔设置，相邻的两个所述缺口之间平滑过渡。According to some embodiments of the present invention, the air outlet end of the outer wheel portion is provided with a plurality of notches, and the plurality of the notches are spaced apart along the circumferential direction of the outer wheel portion, and between the two adjacent gaps Smooth transition.

根据本发明的一些实施例，所述轴孔的内壁上设有用于对所述电机轴进行周向定位的扁位结构。According to some embodiments of the present invention, the inner wall of the shaft hole is provided with a flat structure for circumferentially positioning the motor shaft.

具体地，所述外轮部的内周壁和所述内轮部的外周壁之间设有多个加强筋，多个所述加强筋在所述外轮部的周向方向上间隔设置。Specifically, a plurality of reinforcing ribs are disposed between the inner peripheral wall of the outer wheel portion and the outer peripheral wall of the inner wheel portion. A plurality of the ribs are spaced apart in the circumferential direction of the outer ring portion.

进一步地，与其中一个所述加强筋最相邻的两个所述加强筋之间的夹角为γ，γ满足：γ＝120°。Further, an angle between two of the reinforcing ribs most adjacent to one of the reinforcing ribs is γ, and γ satisfies: γ=120°.

进一步地，其中两个所述加强筋邻近所述扁位结构的两侧设置，所述其中两个加强筋之间的夹角为η，η满足：30°≤η≤60°。Further, two of the reinforcing ribs are disposed adjacent to both sides of the flat structure, wherein an angle between the two reinforcing ribs is η, and η satisfies: 30°≤η≤60°.

根据本发明的一些实施例，在从所述叶片的尾缘到前缘的方向上，所述叶片沿着朝向迎风侧的方向延伸。According to some embodiments of the invention, the vanes extend in a direction towards the windward side in a direction from the trailing edge of the vane to the leading edge.

具体地，所述轮毂的旋转中心线为直线m，以所述直线m为中心线的柱面为参考圆柱面，所述参考圆柱面与所述叶片的截面为曲面P，所述曲面P具有点A和点B，所述点A和所述点B的连线为中弦线AB；Specifically, the rotation center line of the hub is a straight line m, the cylinder surface with the straight line m as a center line is a reference cylindrical surface, and the cross section of the reference cylindrical surface and the blade is a curved surface P, and the curved surface P has Point A and point B, the line connecting the point A and the point B is a center line AB;

过所述中弦线AB且与所述直线m平行的平面为参考面Q，所述曲面P在所述参考面Q上的投影区域为长条形，所述长条形的最大宽度为x，从所述参考圆柱面的径向内侧至所述参考圆柱面的径向外侧方向上，所述x逐渐减小。A plane passing through the center line AB and parallel to the straight line m is a reference plane Q, and a projection area of the curved surface P on the reference plane Q is an elongated shape, and a maximum width of the elongated strip is x The x gradually decreases from a radially inner side of the reference cylindrical surface to a radially outer direction of the reference cylindrical surface.

根据本发明的一些实施例，所述叶片的前缘为曲线，且该曲线上任意一点的曲率中心位于所述前缘的同一侧。According to some embodiments of the invention, the leading edge of the blade is a curve and the center of curvature of any point on the curve is on the same side of the leading edge.

根据本发明的一些实施例，所述叶片的尾缘为曲线，且该曲线上至少存在两点，该两点的曲率中心位于所述尾缘的两侧。According to some embodiments of the invention, the trailing edge of the blade is curved and there are at least two points on the curve, the centers of curvature of the two points being located on either side of the trailing edge.

根据本发明的一些实施例，所述叶片为三片。According to some embodiments of the invention, the blade is three pieces.

根据本发明的一些实施例，所述叶片与所述轮毂卡接。According to some embodiments of the invention, the blade is engaged with the hub.

根据本发明实施例的风机，包括：电机，所述电机具有所述电机轴；和上述的风轮。A fan according to an embodiment of the present invention includes: a motor having the motor shaft; and the above-described wind wheel.

根据本发明实施例的风机，通过设置上述的风轮，有利于提高风机的工作效率，降低电机的功率。According to the fan of the embodiment of the invention, by providing the above-mentioned wind wheel, it is advantageous to improve the working efficiency of the fan and reduce the power of the motor.

根据本发明实施例的制冷设备，包括上述的风机。A refrigeration apparatus according to an embodiment of the present invention includes the above-described fan.

根据本发明实施例的制冷设备，通过设置上述的风机，有利于提高制冷设备的换热能力和效率。 According to the refrigeration apparatus of the embodiment of the present invention, by providing the above-described fan, it is advantageous to improve the heat exchange capability and efficiency of the refrigeration apparatus.

附图说明DRAWINGS

本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

图1是根据本发明一些实施例的风轮的示意图；1 is a schematic view of a wind wheel in accordance with some embodiments of the present invention;

图2是根据本发明一些实施例的风轮另一方向的示意图；2 is a schematic illustration of another direction of a wind wheel in accordance with some embodiments of the present invention;

图3是根据本发明一些实施例的风轮的其它方向的示意图；3 is a schematic illustration of other directions of a wind wheel in accordance with some embodiments of the present invention;

图4是根据图3所示的风轮的E-E方向的剖视图；Figure 4 is a cross-sectional view taken along the line E-E of the wind wheel shown in Figure 3;

图5是根据图4所示的F处的放大图；Figure 5 is an enlarged view of the portion F according to Figure 4;

图6是根据本发明另一些实施例的风轮的结构示意图；6 is a schematic structural view of a wind wheel according to other embodiments of the present invention;

图7是根据图6所示的风轮的另一方向的结构示意图；Figure 7 is a schematic structural view of another direction of the wind wheel shown in Figure 6;

图8是根本发明实施例的风轮的叶片的截面在参考面Q上的投影示意图；Figure 8 is a schematic view showing the projection of the section of the blade of the wind wheel of the embodiment of the invention on the reference plane Q;

图9是根本发明实施例的风轮的叶片的截面在参考面Q上的投影示意图；Figure 9 is a schematic view showing the projection of the section of the blade of the wind wheel of the embodiment of the invention on the reference plane Q;

图10是根本发明实施例的风轮的叶片的截面在参考面Q上的投影示意图；Figure 10 is a schematic view showing the projection of the section of the blade of the wind wheel of the embodiment of the invention on the reference plane Q;

图11是根本发明实施例的风轮的叶片的截面在参考面Q上的投影示意图。Figure 11 is a schematic view showing the projection of the section of the blade of the rotor of the essential embodiment of the invention on the reference plane Q.

图12是根据图7所示的叶片的1A-5A方向的剖示意图；Figure 12 is a cross-sectional view taken along line 1A-5A of the blade shown in Figure 7;

图13是本发明实施例的风轮与相关技术中的风轮的风量与转速的对比图；Figure 13 is a comparison diagram of the air volume and the rotational speed of the wind wheel of the embodiment of the present invention and the related art;

图14是本发明实施例的风轮与相关技术中的风轮的风量与噪音的对比图。Fig. 14 is a view showing a comparison of the air volume and the noise of the wind wheel of the embodiment of the present invention and the wind wheel of the related art.

附图标记：Reference mark:

风轮100； Wind wheel 100;

轮毂10；内轮部1；轴孔11；扁位结构111；连接部12；圆盘段121；第一通孔1211；第一连接段122；第二连接段123；配合部13；第二通孔131；容纳槽132；外轮部2；缺口21；加强筋3；The hub 10; the inner wheel portion 1; the shaft hole 11; the flat structure 111; the connecting portion 12; the disk segment 121; the first through hole 1211; the first connecting portion 122; the second connecting portion 123; the mating portion 13; Through hole 131; receiving groove 132; outer wheel portion 2; notch 21; reinforcing rib 3;

叶片20；前缘201；尾缘202；Blade 20; leading edge 201; trailing edge 202;

参考圆柱面30。 Reference cylindrical surface 30.

具体实施方式Detailed ways

下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

在本发明的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“上”、“下”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "inner", "outer", "axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and the simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention. Furthermore, features defining "first" and "second" may include one or more of the features, either explicitly or implicitly. In the description of the present invention, "a plurality" means two or more unless otherwise stated.

在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that the terms "connected" and "connected" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise explicitly defined and defined. Ground connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

下面参考图1-图14描述根据本发明实施例的风轮100。具体地，风轮100可与电机一起组装成风机，需要说明的是，根据本发明实施例的风机可以用于任何制冷设备中，特别地，根据本发明的风机特别适用于空调***。A wind wheel 100 according to an embodiment of the present invention will be described below with reference to Figs. Specifically, the wind wheel 100 can be assembled with a motor as a fan. It should be noted that the fan according to an embodiment of the present invention can be used in any refrigeration device, and in particular, the fan according to the present invention is particularly suitable for use in an air conditioning system.

如图1-图2以及图6-图7所示，根据本发明实施例的风轮100，可以包括轮毂10和多个叶片20。多个叶片20可连接至轮毂10且在轮毂10的周向方向上间隔设置。也就是说，多个叶片20可连接至轮毂10的外周壁且在轮毂10的周向方向上间隔设置。As shown in FIGS. 1-2 and 6-7, a wind wheel 100 according to an embodiment of the present invention may include a hub 10 and a plurality of blades 20. A plurality of blades 20 may be coupled to the hub 10 and spaced apart in the circumferential direction of the hub 10. That is, the plurality of blades 20 may be coupled to the outer peripheral wall of the hub 10 and spaced apart in the circumferential direction of the hub 10.

可以理解的是，风轮100在工作时可驱动气流沿着风轮100的轴向流动，即风轮100的轴向两侧分别为迎风侧和出风侧，风轮100驱动气流从迎风侧流向出风侧。例如，如图4和图5所示，气流从下到上的方向上流通，即箭头指出的风轮100的下侧为迎风侧，箭头指出的风轮100的上侧为出风侧。需要说明的是，此处和下文中所描述的上下方向仅是依据附图的示意性说明，不能理解为对本发明的一种限制。It can be understood that the wind wheel 100 can drive the airflow to flow along the axial direction of the wind wheel 100 during operation, that is, the axial sides of the wind wheel 100 are the windward side and the wind side, respectively, and the wind wheel 100 drives the airflow from the windward side. Flow To the wind side. For example, as shown in FIGS. 4 and 5, the airflow flows from the bottom to the top, that is, the lower side of the wind wheel 100 indicated by the arrow is the windward side, and the upper side of the wind wheel 100 indicated by the arrow is the wind side. It should be noted that the above-described vertical and downward directions described herein and below are merely illustrative of the drawings and are not to be construed as limiting the invention.

如图4和图5所示，轮毂10可以包括：内轮部1和外轮部2。具体地，内轮部1的一部分沿着朝向出风侧的方向凹入以限定出凹入部，例如，如图3和图4所示，内轮部1的一部分向上凹入以限定出凹入部，内轮部1的其余部分凸出于凹入部。As shown in FIGS. 4 and 5, the hub 10 may include an inner wheel portion 1 and an outer wheel portion 2. Specifically, a portion of the inner wheel portion 1 is recessed in a direction toward the wind outlet side to define a concave portion, for example, as shown in FIGS. 3 and 4, a portion of the inner wheel portion 1 is recessed upward to define a concave portion. The remaining portion of the inner wheel portion 1 protrudes from the recessed portion.

内轮部1上设有适于电机轴穿过的轴孔11。具体地，如图4和图5所示，轴孔11在内轮部1的轴向上贯穿内轮部1，电机的电机轴可从迎风侧伸入轴孔11内并从出风侧伸出轴孔11。可选地，在电机轴从轴孔11伸出后，可与紧固件固定连接，例如在电机轴从轴孔11伸出后，可与螺母螺纹连接，从而实现电机轴与风轮100的固定连接。The inner wheel portion 1 is provided with a shaft hole 11 adapted to pass through the motor shaft. Specifically, as shown in FIGS. 4 and 5, the shaft hole 11 penetrates the inner ring portion 1 in the axial direction of the inner wheel portion 1, and the motor shaft of the motor can extend from the windward side into the shaft hole 11 and extend from the air outlet side. The shaft hole 11 is taken out. Optionally, after the motor shaft protrudes from the shaft hole 11 , it can be fixedly connected with the fastener, for example, after the motor shaft protrudes from the shaft hole 11 , can be screwed with the nut, thereby realizing the motor shaft and the wind wheel 100 . Fixed connection.

外轮部2环绕在内轮部1的外侧且连接至内轮部1的外周沿。具体地，如图4和图5所示，外轮部2在内轮部1的整个方向上环绕在内轮部1的外侧且外轮部2连接至内轮部1的外周沿。The outer wheel portion 2 surrounds the outer side of the inner wheel portion 1 and is connected to the outer peripheral edge of the inner wheel portion 1. Specifically, as shown in FIGS. 4 and 5, the outer ring portion 2 surrounds the outer side of the inner ring portion 1 in the entire direction of the inner wheel portion 1, and the outer ring portion 2 is connected to the outer peripheral edge of the inner ring portion 1.

多个叶片20间隔开地连接至外轮部2的外周壁，例如，如图1-图3、图6和图7所示，叶片20为三个，三个叶片20在外轮部2的周向方向上均匀间隔设置且连接至外轮部2的外周壁。The plurality of blades 20 are connected to the outer peripheral wall of the outer ring portion 2 at intervals, for example, as shown in FIGS. 1-3, 6, and 7, three blades 20 are in the circumferential direction of the outer wheel portion 2. They are evenly spaced in the direction and are connected to the outer peripheral wall of the outer wheel portion 2.

具体地，如图5所示，凹入部的凹入深度为h，h满足：4mm≤h≤6mm。可选地，h为4mm。Specifically, as shown in FIG. 5, the concave portion has a concave depth h, and h satisfies: 4 mm ≤ h ≤ 6 mm. Alternatively, h is 4 mm.

根据本发明实施例的风轮100，通过使得内轮部1的一部分沿着朝向出风侧的方向凹入以限定出凹入部，同时将凹入部的凹入深度限制为4mm≤h≤6mm，这样有利于缩小凹入部的迎风面与内轮部1的非凹入部分的迎风面之间的距离，有利于叶片20的设置在外轮部的邻近迎风侧的一侧，从而当风轮100应用在风机，风机应用在制冷设备中时，有利于增加叶片20与制冷设备的导风圈之间的有效覆盖面积，使得叶片20从迎风侧捕捉到更多的气流流向出风侧，增大叶片20的送风风量，提高风轮100的工作效率，而且增强了叶片20的可装配性，保证了风叶安装的可靠性，同时可减小空气流入叶片20的方向与叶片20形成的正值冲角，有效控制叶片20的工作点在失速区域以下。The wind wheel 100 according to an embodiment of the present invention defines a concave portion by causing a portion of the inner wheel portion 1 to be recessed in a direction toward the air outlet side while limiting the concave depth of the concave portion to 4 mm ≤ h ≤ 6 mm, This is advantageous for reducing the distance between the windward side of the recessed portion and the windward side of the non-recessed portion of the inner wheel portion 1, facilitating the arrangement of the blade 20 on the side adjacent to the windward side of the outer wheel portion, so that when the wind wheel 100 is applied When the fan and the fan are used in the refrigeration device, it is beneficial to increase the wind guide of the blade 20 and the refrigeration device. The effective coverage area between the rings causes the blade 20 to capture more airflow from the windward side to the wind side, increase the airflow volume of the blade 20, improve the working efficiency of the wind wheel 100, and enhance the assembly of the blade 20. The reliability ensures the reliability of the blade installation, and at the same time, the positive angle of attack formed by the direction of the air flowing into the blade 20 and the blade 20 is reduced, and the working point of the blade 20 is effectively controlled below the stall zone.

简而言之，根据本发明实施例的风轮100，具有风量大、工作效率高等优点。In short, the wind wheel 100 according to the embodiment of the present invention has the advantages of large air volume, high work efficiency, and the like.

在本发明的一些实施例中，如图5所示，内轮部1包括：连接部12和配合部13，外轮部2连接至连接部12的外周沿。In some embodiments of the present invention, as shown in FIG. 5, the inner wheel portion 1 includes a connecting portion 12 and a fitting portion 13, and the outer wheel portion 2 is connected to the outer peripheral edge of the connecting portion 12.

具体地，连接部12的一部分沿着朝向出风侧的方向凹入以限定出所述凹入部，例如，如图4所示，连接部12的一部分向上凹入以限定出凹入部。Specifically, a portion of the connecting portion 12 is recessed in a direction toward the windward side to define the recessed portion, for example, as shown in FIG. 4, a portion of the connecting portion 12 is recessed upward to define a recessed portion.

凹入部上设有在其厚度方向方贯穿其的第一通孔1211，也就是说，连接部12的限定出凹入部的部分上设有在其厚度方向上贯穿其的第一通孔1211。配合部13设在连接部12的出风面上且配合部13上设有第二通孔131。例如，如图4所示，配合部13设在连接部12的限定出凹入部的部分的出风面上，配合部13上设有在配合部13的轴向上贯穿配合部13的第二通孔131。The recessed portion is provided with a first through hole 1211 penetrating therethrough in the thickness direction thereof, that is, a portion of the connecting portion 12 defining the recessed portion is provided with a first through hole 1211 penetrating therethrough in the thickness direction thereof. The fitting portion 13 is provided on the air outlet surface of the connecting portion 12 and the second through hole 131 is provided in the fitting portion 13. For example, as shown in FIG. 4, the engaging portion 13 is provided on the air outlet surface of the portion of the connecting portion 12 that defines the recessed portion, and the mating portion 13 is provided with the second portion that penetrates the mating portion 13 in the axial direction of the mating portion 13. Through hole 131.

第二通孔131正对第一通孔1211设置，从而第二通孔131和所述第一通孔1211共同限定出轴孔11，也就是说，轴孔11是由位于配合部13上的第二通孔131和位于连接部12上的第一通孔1211共同限定出的。The second through hole 131 is disposed opposite to the first through hole 1211 such that the second through hole 131 and the first through hole 1211 together define the shaft hole 11 , that is, the shaft hole 11 is located on the mating portion 13 The second through hole 131 and the first through hole 1211 on the connecting portion 12 are defined together.

从而，使得轮毂10的朝向迎风侧的一侧形成为“凹凸”型结构，使得风轮100具有噪音小、风量大等优点。Thereby, the side of the hub 10 facing the windward side is formed into a "concave-convex" type structure, so that the wind wheel 100 has the advantages of low noise, large air volume, and the like.

在本发明的进一步实施例中，连接部12可以包括圆盘段121、第一连接段122和第二连接段123。具体地，如图5所示，圆盘段121上设有所述第一通孔1211，配合部13位于圆盘段121的出风面上。例如，如图4所示，配合部13位于圆盘段121的上表面上。In a further embodiment of the invention, the connecting portion 12 may comprise a disk segment 121, a first connecting segment 122 and a second connecting segment 123. Specifically, as shown in FIG. 5, the first through hole 1211 is disposed on the disk segment 121, and the engaging portion 13 is located on the air outlet surface of the disk segment 121. For example, as shown in FIG. 4, the fitting portion 13 is located on the upper surface of the disk segment 121.

第一连接段122的第一端连接至所述圆盘段121的外周沿，第一连接段122的第二端在朝向迎风侧的方向上沿着朝向远离轴孔11的中心轴线的方向倾斜延伸。例如如图5所示，第一连接段122的上端连接至圆盘段121的外周沿，第一连接段122的下端在从上到下的方向上沿着朝向远离轴孔11的中心轴线的方向倾斜延伸。The first end of the first connecting section 122 is connected to the outer peripheral edge of the disk segment 121, and the second end of the first connecting section 122 is inclined in a direction toward the windward side in a direction away from the central axis of the shaft hole 11. extend. For example, as shown in FIG. 5, the upper end of the first connecting section 122 is connected to the outer peripheral edge of the disk segment 121, and the lower end of the first connecting section 122 is along the central axis away from the axial hole 11 in the direction from top to bottom. The direction extends obliquely.

第二连接段123的第一端连接至第一连接段122的第二端且第二连接段123的第二端沿径向向外延伸，外轮部2连接至所述第二连接段123的第二端。例如，如图5所示，第二连接段123的内端连接至第一连接段122的下端且第二连接段123的外端沿着径向方向向外延伸，外轮部22的下端连接至第二连接段123的第二端。由此，结构简单可靠。The first end of the second connecting section 123 is connected to the second end of the first connecting section 122 and the second end of the second connecting section 123 extends radially outward, and the outer wheel part 2 is connected to the second connecting section 123 Second end. For example, as shown in FIG. 5, the inner end of the second connecting section 123 is connected to the lower end of the first connecting section 122 and the outer end of the second connecting section 123 extends outward in the radial direction, and the lower end of the outer wheel portion 22 is connected to The second end of the second connecting section 123. Thereby, the structure is simple and reliable.

这里，需要理解的是，外是指远离轴孔11的中心轴线的方向，与之相反的方向为内。Here, it is to be understood that the outer direction refers to a direction away from the central axis of the shaft hole 11, and the opposite direction is inner.

在本发明的一些示意性实施例中，如图5所示，第一连接段122的延伸方向与轴孔11的中心轴线之间的夹角为α，α满足：30°≤α≤60°，例如，α为35°、40°、43°、45°、50°或55°等。由此，不但结构简单，而且有利于增加风量，当风轮100用在风机上时，有利于提高风机的工作效率，降低电机的功率，从而当风机用在制冷设备上时，有利于整个制冷设备换热能力和效率的提升。In some exemplary embodiments of the present invention, as shown in FIG. 5, the angle between the extending direction of the first connecting portion 122 and the central axis of the shaft hole 11 is α, α satisfies: 30° ≤ α ≤ 60° For example, α is 35°, 40°, 43°, 45°, 50° or 55°, and the like. Therefore, not only is the structure simple, but also beneficial to increase the air volume. When the wind wheel 100 is used on the fan, it is beneficial to improve the working efficiency of the fan and reduce the power of the motor, so that when the fan is used in the refrigeration device, the whole refrigeration is facilitated. Increased heat transfer capacity and efficiency of equipment.

根据本发明的一些实施例，如图3所示，与多个叶片20相切的圆的半径为D，外轮部2的外周壁所在圆柱面的直径为d，所述D和所述d满足：0.2≤d/D≤0.3。从而进一步优化风轮100的尺寸，有利于进一步增加风轮100的出风量，提高风轮100的工作效率。According to some embodiments of the present invention, as shown in FIG. 3, the radius of the circle tangential to the plurality of blades 20 is D, and the diameter of the cylindrical surface of the outer peripheral wall of the outer wheel portion 2 is d, and the D and the d satisfy : 0.2 ≤ d / D ≤ 0.3. Therefore, the size of the wind wheel 100 is further optimized, which is beneficial to further increase the air volume of the wind wheel 100 and improve the working efficiency of the wind wheel 100.

可选地，d/D的取值为0.24、0.25、0.28等。优选地，d/D＝0.24。Optionally, the value of d/D is 0.24, 0.25, 0.28, and the like. Preferably, d/D = 0.24.

在本发明的一些可选的实施例中，如图1所示，外轮部2的出风端上设有多个缺口21，多个缺口21沿外轮部2的周向方向间隔设置，相邻的两个缺口21之间平滑过渡。由此，可将轮毂10内涡流泄漏至叶片20的压力面，有效地降低近轮毂10内的涡旋强度，与相关技术相比，在同等工况下，有利于增大风量，提高风机的工作效率，同时还可以降低风轮100自重，减小风机负载，从而降低风机的送风功率。 In some optional embodiments of the present invention, as shown in FIG. 1, the air outlet end of the outer wheel portion 2 is provided with a plurality of notches 21, and the plurality of notches 21 are spaced apart along the circumferential direction of the outer wheel portion 2, adjacent to each other. A smooth transition between the two notches 21 is achieved. Thereby, the eddy current in the hub 10 can be leaked to the pressure surface of the blade 20, and the vortex intensity in the near hub 10 can be effectively reduced. Compared with the related art, under the same working conditions, it is advantageous to increase the air volume and improve the fan. The working efficiency can also reduce the weight of the wind wheel 100 and reduce the load of the fan, thereby reducing the air supply power of the fan.

具体地，如图1所示，在从叶片20的前缘201到尾缘202的方向上，缺口21先沿着朝向迎风侧的方向延伸后又沿着朝向送风侧的方向延伸，从而进一步将轮毂10内涡流泄漏至叶片20的压力面，有效地降低近轮毂10内的涡旋强度，增大风量，提高风机的工作效率。Specifically, as shown in FIG. 1, in the direction from the leading edge 201 to the trailing edge 202 of the blade 20, the notch 21 first extends in a direction toward the windward side and then in a direction toward the air blowing side, thereby further The eddy current in the hub 10 leaks to the pressure surface of the blade 20, effectively reducing the vortex strength in the near hub 10, increasing the air volume, and improving the working efficiency of the fan.

根据本发明的一些实施例，轴孔11的内壁上设有用于对电机轴进行周向定位的扁位结构111。例如，如图5所示，扁位结构111从第一通孔1211延伸至第二通孔131。电机轴上设有与扁位结构111配合的扁位部通过扁位结构111和扁位部的配合，从而便于电机轴通过扁位结构111向轮毂10传递扭矩，使电机驱动风轮100旋转。According to some embodiments of the present invention, the inner wall of the shaft hole 11 is provided with a flat structure 111 for circumferentially positioning the motor shaft. For example, as shown in FIG. 5, the flat structure 111 extends from the first through hole 1211 to the second through hole 131. The motor shaft is provided with a flat portion that cooperates with the flat structure 111, and the flat position structure 111 and the flat portion cooperate, so that the motor shaft transmits torque to the hub 10 through the flat structure 111, so that the motor drives the wind wheel 100 to rotate.

具体地，扁位结构111的长度为m，m小于等于扁位部的长度，由此，有利于避免电机轴与轮毂10之间结构上的干涉。Specifically, the length of the flat structure 111 is m, and m is less than or equal to the length of the flat portion, thereby facilitating avoidance of structural interference between the motor shaft and the hub 10.

具体地，轴孔11的朝向出风侧的一端的内周壁上设有容纳槽132，当电机轴从轴孔11伸出以与紧固件例如螺母配合时，螺母容纳在容纳槽132内，且电机轴的扁位部处的台阶面与内轮部1的迎风面(例如，上述圆盘段121的迎风面)配合以进行轴向定位，从而保证在运转过程中，叶片20的轴向位置不会发生改变，提高风轮100工作的可靠性。Specifically, the inner peripheral wall of one end of the shaft hole 11 facing the air outlet side is provided with a receiving groove 132. When the motor shaft protrudes from the shaft hole 11 to be engaged with a fastener such as a nut, the nut is received in the receiving groove 132. And the step surface at the flat portion of the motor shaft cooperates with the windward surface of the inner wheel portion 1 (for example, the windward surface of the disk segment 121) for axial positioning, thereby ensuring the axial direction of the blade 20 during operation. The position does not change, improving the reliability of the operation of the wind wheel 100.

可选地，容纳槽132的深度为d，d满足2mm≤d≤4mm。由此，有利于保证螺母装配过程中的最大扭矩，保证风轮100工作的可靠性。优选地，d为3mm。Optionally, the receiving groove 132 has a depth d, and d satisfies 2 mm ≤ d ≤ 4 mm. Thereby, it is beneficial to ensure the maximum torque during the assembly of the nut and ensure the reliability of the operation of the wind wheel 100. Preferably, d is 3 mm.

具体地，外轮部2的内周壁与内轮部1的外周壁之间设有多个加强筋3，多个加强筋3在外轮部2的周向方向上间隔设置。例如，如图1和图3所示，在外轮部2的内周壁和上述配合部13的外周壁之间设有六个加强筋3，六个加强筋3在外轮部2的周向方向上间隔设置。由此，有利于提高轮毂10的强度，而且还有利于避免气流在外轮部2的内周壁与内轮部1的外周壁之间产生涡流，从而提高风轮100的出风量。Specifically, a plurality of reinforcing ribs 3 are provided between the inner peripheral wall of the outer ring portion 2 and the outer peripheral wall of the inner ring portion 1, and the plurality of reinforcing ribs 3 are spaced apart from each other in the circumferential direction of the outer ring portion 2. For example, as shown in FIGS. 1 and 3, six reinforcing ribs 3 are provided between the inner peripheral wall of the outer ring portion 2 and the outer peripheral wall of the fitting portion 13, and the six reinforcing ribs 3 are in the circumferential direction of the outer ring portion 2. Interval setting. Thereby, it is advantageous to increase the strength of the hub 10, and it is also advantageous to prevent the airflow from generating eddy current between the inner peripheral wall of the outer ring portion 2 and the outer peripheral wall of the inner ring portion 1, thereby increasing the amount of air blown by the wind wheel 100.

具体地，如图3所示，其中两个加强筋3邻近扁位结构111的两侧设置，所述其中两个加强筋3之间的夹角为η，也就是说，邻近扁位结构111一侧的位置处设有一个加强筋3，邻近扁位结构111另一侧的位置处设有另一个加强筋3，所述其中一个加强筋3与所述另一个加强筋3之间的夹角为η，η满足：30°≤η≤60°。从而进一步优化轮毂10的尺寸，提高风轮100的工作效率。Specifically, as shown in FIG. 3, two reinforcing ribs 3 are disposed adjacent to both sides of the flat structure 111, wherein an angle between the two reinforcing ribs 3 is η, that is, adjacent to the flat structure 111 One side A reinforcing rib 3 is disposed at a position, and another reinforcing rib 3 is disposed at a position adjacent to the other side of the flat structure 111, and an angle between the one reinforcing rib 3 and the other reinforcing rib 3 is η , η satisfies: 30 ° ≤ η ≤ 60 °. Thereby, the size of the hub 10 is further optimized, and the working efficiency of the wind wheel 100 is improved.

具体地，与其中一个加强筋3最相邻的两个加强筋3之间的夹角为γ，也就是说，每个加强筋3的两侧分别具有一个与其最相邻的加强筋3，位于每个加强筋3两侧的且与其最相邻的两个加强筋3之间的夹角为γ，γ满足：γ＝120°。例如如图3所示，γ＝η+θ＝120°。由此，有利于进一步避免气流在外轮部2的内周壁与内轮部1的外周壁之间产生涡流，从而提高风轮100的出风量。Specifically, the angle between the two reinforcing ribs 3 adjacent to one of the reinforcing ribs 3 is γ, that is, each side of each reinforcing rib 3 has a reinforcing rib 3 adjacent thereto, The angle between the two reinforcing ribs 3 located on both sides of each of the reinforcing ribs 3 and adjacent thereto is γ, and γ satisfies: γ = 120°. For example, as shown in FIG. 3, γ = η + θ = 120°. Thereby, it is advantageous to further prevent the airflow from generating eddy current between the inner peripheral wall of the outer ring portion 2 and the outer peripheral wall of the inner ring portion 1, thereby increasing the amount of air blown by the wind wheel 100.

在本发明的一些可选的实施例中，如图5所示，内轮部1的高度为H，H和h满足：0.2≤h/H≤0.8。例如，内轮部1的高度为H，第二连接段123的迎风面到圆盘段121的迎风面之间的垂直距离为h，H和h满足：0.2≤h/H≤0.8。从而对轮毂10的尺寸进行优化，不但结构简单，而且有利于增加风量，当风轮100用在风机上时，有利于进一步提高风机的工作效率，降低电机的功率，当风机用在制冷设备上时，有利于整个制冷设备换热能力和效率的进一步提升。In some optional embodiments of the present invention, as shown in FIG. 5, the height of the inner wheel portion 1 is H, H and h satisfy: 0.2 ≤ h / H ≤ 0.8. For example, the height of the inner wheel portion 1 is H, and the vertical distance between the windward surface of the second connecting portion 123 to the windward side of the disk segment 121 is h, H and h satisfy: 0.2 ≤ h / H ≤ 0.8. Therefore, the size of the hub 10 is optimized, which is not only simple in structure, but also beneficial to increase the air volume. When the wind wheel 100 is used on the fan, it is beneficial to further improve the working efficiency of the fan and reduce the power of the motor. When the fan is used in the refrigeration device, At the same time, it is beneficial to further improve the heat exchange capacity and efficiency of the entire refrigeration equipment.

在本发明的一些实施例中，每个叶片20具有前缘201和尾缘202，在从叶片20的尾缘202到前缘201的方向上，叶片20沿着朝向迎风侧的方向延伸。也就是说，在从叶片20的尾缘202到前缘201的方向上，叶片20沿着朝向与气流流动方向相反的方向延伸。In some embodiments of the invention, each blade 20 has a leading edge 201 and a trailing edge 202 that extend in a direction toward the windward side in a direction from the trailing edge 202 of the blade 20 to the leading edge 201. That is, in the direction from the trailing edge 202 of the blade 20 to the leading edge 201, the blade 20 extends in a direction opposite to the direction in which the airflow flows.

例如，如图7所示，过轮毂10的旋转中心线的平面1A、2A、3A、4A、5A中相邻的两个平面之间的夹角为15°，平面1A、2A、3A、4A、5A的远离轮毂10的旋转中心线的一端间隔开且分别切割叶片20以获得如图12所示的与平面1A、2A、3A、4A、5A一一对应的叶片20的截面1A’、2A’、3A’、4A’、5A’，从截面1A’到5A’，截面整体具有朝向迎风侧延伸的趋势。由此，可使得叶片20沿圆周方向带有明显顺叶轮旋转方向弯曲的特征，从而有利于在一定程度上消除叶片20的外端壁区域的气流阻塞，增大叶片2的前掠角度，增加叶片20有效做功面积，而且可有效提高吸力面叶顶区低压和压力面叶顶区高压，使气流沿叶高分布更为均匀，减弱从压力面到吸力面的二次流，提高气流的流量和叶片20的耐压性，提升风道流量，并减小了二次流造成的涡流噪音。简而言之，根据本发明实施例的风轮100，具有结构简单、风量大、噪音小、耐压性好等优点。For example, as shown in FIG. 7, the angle between adjacent two planes of the

planes

1A, 2A, 3A, 4A, 5A of the rotation center line of the hub 10 is 15°, planes 1A, 2A, 3A, 4A One end of the 5A away from the rotation center line of the hub 10 is spaced apart and the blades 20 are respectively cut to obtain the sections 1A', 2A of the blade 20 corresponding to the

planes

1A, 2A, 3A, 4A, 5A as shown in FIG. ', 3A', 4A', 5A', from the section 1A' to 5A', the entire section has a tendency to extend toward the windward side. Thereby, the blade 20 can be characterized in the circumferential direction to be curved obviously in the direction of rotation of the impeller, thereby facilitating the elimination of the airflow blockage of the outer end wall region of the blade 20 to a certain extent, increasing the forward sweep angle of the blade 2, and increasing The blade 20 effectively performs the work area, and can effectively increase the low pressure of the suction tip area and the pressure top area high pressure, so that The airflow is more evenly distributed along the leaf height, reducing the secondary flow from the pressure surface to the suction surface, increasing the flow rate of the airflow and the pressure resistance of the blade 20, increasing the airflow of the air passage, and reducing the eddy current noise caused by the secondary flow. In short, the wind wheel 100 according to the embodiment of the present invention has the advantages of simple structure, large air volume, low noise, good pressure resistance and the like.

在本发明的一些实施例中，轮毂10的旋转中心线为直线m，以直线m为中心线的柱面为参考圆柱面30，参考圆柱面30的半径为r。可以理解的是，参考圆柱面30的中心线与轮毂10的旋转中心线在同一直线上，用直线m的垂直面切割参考圆柱面30，切割面形成为参考圆，参考圆的半径为r。例如，如图7所示，多片叶片20所在的参考圆柱面30为第四参考圆柱面，邻近轮毂10的参考圆柱面30为第一参考圆柱面，第一参考圆柱面与第四参考圆柱面之间存在第二参考圆柱面与第三参考圆柱面，第二参考圆柱面到第一参考圆柱面的距离与第三参考圆柱面到第二参考圆柱面的距离相等，这里所提到的“距离”是指参考圆径向方向距离。In some embodiments of the invention, the centerline of rotation of the hub 10 is a straight line m, the cylinder with the line m as the center line is the reference cylindrical surface 30, and the radius of the reference cylindrical surface 30 is r. It can be understood that the center line of the reference cylindrical surface 30 is on the same line as the rotation center line of the hub 10, and the reference cylindrical surface 30 is cut by the vertical plane of the straight line m, the cut surface is formed as a reference circle, and the radius of the reference circle is r. For example, as shown in FIG. 7, the reference cylindrical surface 30 where the plurality of blades 20 are located is a fourth reference cylindrical surface, and the reference cylindrical surface 30 adjacent to the hub 10 is a first reference cylindrical surface, a first reference cylindrical surface and a fourth reference cylinder. There is a second reference cylindrical surface and a third reference cylindrical surface between the faces, and the distance between the second reference cylindrical surface and the first reference cylindrical surface is equal to the distance from the third reference cylindrical surface to the second reference cylindrical surface, as mentioned herein "Distance" refers to the distance in the radial direction of the reference circle.

如图7所示，第一参考圆柱面的半径为r1，第二参考圆柱面的半径为r2，第三参考圆柱面的半径为r3，第四参考圆柱面的半径为r4，从第一参考圆柱面到第四参考圆柱面的方向上，半径逐渐增大，即r4>r3>r2>r1。As shown in FIG. 7, the radius of the first reference cylindrical surface is r1, the radius of the second reference cylindrical surface is r2, the radius of the third reference cylindrical surface is r3, and the radius of the fourth reference cylindrical surface is r4, from the first reference. In the direction from the cylindrical surface to the fourth reference cylindrical surface, the radius gradually increases, that is, r4>r3>r2>r1.

参考圆柱面30与叶片的截面为曲面P，曲面P具有点A和点B，点A和点B的连线为中弦线AB。The cross section of the reference cylindrical surface 30 and the blade is a curved surface P, the curved surface P has a point A and a point B, and the line connecting the point A and the point B is a central string AB.

例如，叶片20具有相对的第一表面和第二表面，第一表面和第二表面相对且第一表面位于第二表面的上方，第一参考圆柱面与叶片20相交形成曲面P，曲面P包括曲线a和曲线b，曲线a为第一表面与第一参考圆柱面的相交线。曲线b为第二表面与第一参考圆柱面的相交线。曲线a包括端点A1和端点A2，端点A1和端点A2分别位于曲线a的两端。曲线b包括端点B1和端点B2，端点B1和端点B2分别位于曲线b的两端。端点A1靠近端点B1，端点A2靠近端点B2，端点A1与端点B1的连线的中点为点A，端点A2与端点B2的连线的中点为点B,连接点A与点B的线段为中弦线AB。 For example, the blade 20 has opposing first and second surfaces, the first surface being opposite the first surface and the first surface being above the second surface, the first reference cylindrical surface intersecting the blade 20 forming a curved surface P, the curved surface P comprising Curve a and curve b, curve a is the intersection of the first surface and the first reference cylindrical surface. Curve b is the intersection of the second surface with the first reference cylindrical surface. The curve a includes an end point A1 and an end point A2, and the end point A1 and the end point A2 are respectively located at both ends of the curve a. The curve b includes an end point B1 and an end point B2, and the end point B1 and the end point B2 are respectively located at both ends of the curve b. End point A1 is close to end point B1, end point A2 is close to end point B2, the midpoint of the line connecting end point A1 and end point B1 is point A, the midpoint of the line connecting end point A2 and end point B2 is point B, and the line segment connecting point A and point B For the center line AB.

如图8-图11所示，取过中弦线AB且与直线m平行的平面为参考面Q，曲面P在参考面Q上的投影区域为长条形，长条形的最大宽度为x，从参考圆柱面30的径向内侧至参考圆柱面30的径向外侧方向上，x逐渐减小。可以理解的是，曲面P在参考面Q上的投影面为映射面R，曲线a与曲线b在参考面Q上投影形成曲线a’与曲线b’，曲线a’与曲线b’之间距离的最大值为h，从参考圆柱面30的径向内侧至参考圆柱面30的径向外侧方向上，即从第一参考圆柱面到第四参考圆柱面的方向上，h逐渐减小。由此，可以使叶片20具备较高的抗静压能力，能够保证在压降较大的工况下，叶片20依旧能够提供较高的风量，而且有利于简化风轮100的结构，方便叶片的出模。As shown in FIG. 8 to FIG. 11, the plane that has taken the center line AB and is parallel to the line m is the reference plane Q, and the projection area of the curved surface P on the reference plane Q is elongated, and the maximum width of the strip is x. From the radially inner side of the reference cylindrical surface 30 to the radially outer direction of the reference cylindrical surface 30, x gradually decreases. It can be understood that the projection surface of the curved surface P on the reference surface Q is the mapping surface R, and the curve a and the curved curve b are projected on the reference surface Q to form a curve a' and a curve b', and the distance between the curve a' and the curve b' The maximum value is h, from the radially inner side of the reference cylindrical surface 30 to the radially outer direction of the reference cylindrical surface 30, that is, from the first reference cylindrical surface to the fourth reference cylindrical surface, h gradually decreases. Therefore, the blade 20 can be provided with a high anti-static pressure capability, and the blade 20 can still provide a high air volume under a large pressure drop condition, and is advantageous for simplifying the structure of the wind wheel 100 and facilitating the blade. Model.

如图1—图2以及图6-图7所示，根据本发明的一些实施例，叶片20的前缘201为曲线，且该曲线上任意一点的曲率中心位于前缘201的同一侧。可以理解的是，叶片20的前缘201的每个区间段均是曲线段且每段曲线段的曲线延伸方向均位于前缘201的同一侧。例如，如图1、图6、图7所示，叶片20的形状为镰刀形，叶片20的前缘201向尾缘202凹陷，前缘201上任意一点的曲率中心位于前缘201的前侧(如图7所示的前方向)。由此，可以在保证叶片20的通风量的同时有效地减小气流对于叶片20的阻力，进而降低了叶片20的功率，提高了风轮100的能效比。As shown in FIGS. 1-2 and 6-7, in accordance with some embodiments of the present invention, the leading edge 201 of the blade 20 is curved and the center of curvature of any point on the curve is on the same side of the leading edge 201. It will be understood that each section of the leading edge 201 of the blade 20 is a curved section and the curved extension of each curved section is located on the same side of the leading edge 201. For example, as shown in FIGS. 1, 6, and 7, the blade 20 has a sickle shape, the leading edge 201 of the blade 20 is recessed toward the trailing edge 202, and the center of curvature of any point on the leading edge 201 is located on the front side of the leading edge 201. (The front direction shown in Figure 7). Thereby, the resistance of the airflow to the blade 20 can be effectively reduced while ensuring the ventilation amount of the blade 20, thereby reducing the power of the blade 20 and improving the energy efficiency ratio of the wind wheel 100.

如图6-图7所示，根据本发明的一些实施例，叶片20的尾缘202为曲线，且该曲线上至少存在两点，该两点的曲率中心位于尾缘202的两侧(例如前后两侧)。可以理解的是，叶片20的尾缘202的每个区间段均是曲线段且多段曲线段中至少存在两段曲线段的曲线延伸方向不同。例如，如图1、图2所示，叶片20的形状为镰刀形，叶片20的尾缘202呈波浪形，叶片20的尾缘202可以分为三段，中间段上任意一点的曲率中心位于尾缘202的前侧，其余两段上任意一点的曲率中心位于尾缘202的后侧。由此，可以避免叶片20周缘处涡流的形成，从而可以达到很好的降低噪音的作用。As shown in Figures 6-7, in accordance with some embodiments of the present invention, the trailing edge 202 of the blade 20 is curved and there are at least two points on the curve, the centers of curvature of the two points being located on either side of the trailing edge 202 (e.g. Front and rear sides). It can be understood that each section of the trailing edge 202 of the blade 20 is a curved section and the curve extending direction of at least two sections of the plurality of curved sections is different. For example, as shown in FIGS. 1 and 2, the shape of the blade 20 is a sickle shape, the trailing edge 202 of the blade 20 is wavy, and the trailing edge 202 of the blade 20 can be divided into three segments, and the center of curvature of any point on the middle segment is located. On the front side of the trailing edge 202, the center of curvature at any point on the remaining two segments is located on the rear side of the trailing edge 202. Thereby, the formation of eddy currents at the periphery of the blade 20 can be avoided, so that a good noise reduction effect can be achieved.

根据本发明的一些实施例，叶片20与轮毂10卡接。例如，叶片20上可以设有卡接凸块，卡接凸块包括凸块部和卡接部且凸块部和卡接部连接，凸块部的延伸方向和卡接部的延伸方向不同，轮毂10上可以设有卡接凹槽，卡接凸块在外力的作用下可以穿过卡接凹槽，卡接部可以限定在卡接凹槽内，凸块部穿过卡接凹槽后位于卡接凹槽外且与卡接凹槽的一端相抵。由此，可以将叶片20连接到轮毂10上，且装配过程简单、不易脱落。在另一些可选的实施例中，叶片20与轮毂为一体件。According to some embodiments of the invention, the blade 20 is engaged with the hub 10. For example, the blade 20 can be a latching protrusion is provided, the latching protrusion includes a bump portion and a latching portion, and the bump portion and the latching portion are connected, and the extending direction of the protruding portion is different from the extending direction of the engaging portion, and the hub 10 can be disposed The engaging groove can pass through the engaging groove under the action of an external force, and the engaging portion can be defined in the engaging groove, and the protruding portion passes through the engaging groove and is located outside the engaging groove And it is opposite to the end of the snap groove. Thereby, the blade 20 can be attached to the hub 10, and the assembly process is simple and not easy to fall off. In other alternative embodiments, the blade 20 is integral with the hub.

发明人在实际研究中，将风轮100应用在风机中，并将风机应用在空调室外机中，且采用不同层数的120目尼龙纱布模拟在空调室外机换热器积灰脏堵时风轮100的风量，并对比同等条件下相关技术中的风轮的风量，结果如下表所示：In the actual research, the inventor applied the wind wheel 100 to the fan, and applied the fan to the air conditioner outdoor unit, and used different layers of 120 mesh nylon gauze to simulate the wind when the air conditioner outdoor unit heat exchanger was dusty and dirty. The air volume of the wheel 100, and compare the wind volume of the wind wheel in the related art under the same conditions, the results are shown in the following table:

相同工况下，本发明的风轮100的风量具有显著的增加，从而可使得空调的结霜周期延长，空调器正常工作时间增加。Under the same working condition, the air volume of the wind wheel 100 of the present invention has a significant increase, so that the frosting period of the air conditioner can be prolonged, and the normal working time of the air conditioner is increased.

对比两个风轮100的叶片20的耐压性，对两个风轮100分别蒙纱布处理后，同风量下，相关技术中的风轮叶片的抗压风量均值为1261m3/h，采用本专利风轮的叶片的抗压风量均值为1351m3/h，同比增大90m3/h，增幅高达7％Comparing the pressure resistance of the blades 20 of the two wind wheels 100, after the gauze treatment is performed on the two wind wheels 100 respectively, the average air pressure of the wind turbine blades in the related art is 1261 m3/h under the same air volume, and the patent is adopted. The mean value of the compressive air volume of the blades of the wind wheel is 1351m3/h, which is 90m3/h, an increase of 7%.

同时，发明人采用本发明实施例中的风轮100对风量与转速之间以及风量与噪音之间的关系进行试验，并将结果与相关中的轴流风轮进行比较，结果如图13和图14所示，实验数据表明，本发明实施例中的风轮100与相关技术相比，同转速下风量提升约260m³/h，增幅14％；同噪音下风量提升122m³/h，同比增幅6％。Meanwhile, the inventor uses the wind wheel 100 in the embodiment of the present invention to test the relationship between the air volume and the rotational speed and the relationship between the air volume and the noise, and compares the result with the related axial flow wind wheel, and the result is as shown in FIG. 13 and 14, the experimental data show, the rotor 100 compared with the related art, at the same speed wind lift amount of about 260m ³ / h embodiment, an increase of 14% embodiment of the present invention; the same air volume noise lift 122m ³ / h, an The increase was 6%.

根据本发明实施例的风机，包括电机和上述实施例中的风轮100。其中，电机的电机轴从迎风侧伸入轴孔11并从出风侧伸出。A fan according to an embodiment of the present invention includes an electric motor and the wind wheel 100 in the above embodiment. The motor shaft of the motor extends from the windward side into the shaft hole 11 and protrudes from the air outlet side.

根据本发明实施例的风机，通过设置上述的风轮100，有利于提高风机的工作效率，降低电机的功率。According to the fan of the embodiment of the invention, by providing the wind wheel 100 described above, it is advantageous to improve the working efficiency of the fan and reduce the power of the motor.

根据本发明实施例的制冷设备，通过设置上述的风机，有利于提高制冷设备的换热能力和效率。According to the refrigeration apparatus of the embodiment of the present invention, by providing the above-described fan, it is advantageous to improve the heat exchange capability and efficiency of the refrigeration apparatus.

可选地，制冷设备为空调***。可以理解的是，空调***可以包括空调室外机和空调室内机，上述的风机可以用在空调室外机中，也可以用在空调室内机中。其中，空调室外机包括换热器、支架、电机、风轮100、导风圈和出风格栅等。Optionally, the refrigeration device is an air conditioning system. It can be understood that the air conditioning system may include an air conditioner outdoor unit and an air conditioner indoor unit, and the above fan may be used in an air conditioner outdoor unit or in an air conditioner indoor unit. Among them, the air conditioner outdoor unit includes a heat exchanger, a bracket, a motor, a wind wheel 100, a wind guide ring, and a style grille.

在本说明书的描述中，参考术语“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of the present specification, the description with reference to the terms "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" and the like means specifics in connection with the embodiments or examples. A feature, structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。 While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

一种风轮，其特征在于，所述风轮的轴向两侧分别为迎风侧和出风侧，所述风轮包括：A wind wheel is characterized in that: the axial sides of the wind wheel are respectively a windward side and an air outlet side, and the wind wheel comprises:

轮毂，所述轮毂包括：a hub, the hub comprising:

内轮部，所述内轮部的一部分沿着朝向所述出风侧的方向凹入以限定出凹入部，所述内轮部上设有适于电机轴穿过的轴孔；An inner wheel portion, a portion of the inner wheel portion being recessed in a direction toward the air outlet side to define a recessed portion, the inner wheel portion being provided with a shaft hole adapted to pass through a motor shaft;

外轮部，所述外轮部环绕在所述内轮部的外侧且连接至所述内轮部的外周沿；An outer wheel portion surrounding the outer side of the inner wheel portion and connected to an outer peripheral edge of the inner wheel portion;

多个叶片，所述多个叶片间隔开地连接至所述外轮部的外周壁。a plurality of blades that are spaced apart from each other to the outer peripheral wall of the outer wheel portion.

其中，所述凹入部的凹入深度为h，所述h满足：4mm≤h≤6mm。Wherein, the concave portion has a concave depth of h, and the h satisfies: 4 mm ≤ h ≤ 6 mm.
根据权利要求1所述的风轮，其特征在于，所述内轮部包括：The wind wheel of claim 1 wherein said inner wheel portion comprises:

连接部，所述连接部的一部分沿着朝向所述出风侧的方向凹入以限定出所述凹入部，所述凹入部上设有在其厚度方向方贯穿其的第一通孔；a connecting portion, a portion of the connecting portion is recessed in a direction toward the air outlet side to define the recessed portion, and the recessed portion is provided with a first through hole penetrating therethrough in a thickness direction thereof;

配合部，所述配合部设在所述连接部的出风面上且所述配合部上设有第二通孔，所述第二通孔正对所述第一通孔设置；a mating portion, the mating portion is disposed on an air outlet surface of the connecting portion, and the mating portion is provided with a second through hole, and the second through hole is disposed opposite to the first through hole;

其中，所述第二通孔和所述第一通孔共同限定出所述轴孔，所述外轮部连接至所述连接部的外周沿。Wherein the second through hole and the first through hole together define the shaft hole, and the outer wheel portion is connected to an outer peripheral edge of the connecting portion.
根据权利要求2所述的风轮，其特征在于，所述连接部包括：The wind wheel according to claim 2, wherein the connecting portion comprises:

圆盘段，所述圆盘段上设有所述第一通孔，所述配合部位于所述圆盘段的出风面上；a disk segment, the disk segment is provided with the first through hole, and the mating portion is located on an air outlet surface of the disk segment;

第一连接段，所述第一连接段的第一端连接至所述圆盘段的外周沿，所述第一连接段的第二端在朝向迎风侧的方向上沿着朝向远离所述轴孔的中心轴线的方向倾斜延伸；a first connecting section, the first end of the first connecting section is connected to an outer peripheral edge of the disc segment, and the second end of the first connecting section is oriented away from the axis in a direction toward the windward side The direction of the central axis of the hole extends obliquely;

第二连接段，所述第二连接段的第一端连接至所述第一连接段的第二端且所述第二连接段的第二端沿径向向外延伸，所述外轮部连接至所述第二连接段的第二端。 a second connecting section, a first end of the second connecting section is connected to a second end of the first connecting section, and a second end of the second connecting section extends radially outward, the outer wheel part is connected To the second end of the second connecting segment.
根据权利要求3所述的风轮，其特征在于，所述第一连接段的延伸方向与所述轴孔的中心轴线之间的夹角为α，α满足：30°≤α≤60°。The wind turbine according to claim 3, wherein an angle between the extending direction of the first connecting portion and the central axis of the shaft hole is α, and α satisfies: 30° ≤ α ≤ 60°.
根据权利要求1-4中任一项所述的风轮，其特征在于，与多个所述叶片相切的圆的半径为D，所述外轮部的外周壁所在圆柱面的直径为d，所述D和所述d满足：0.2≤d/D≤0.3The wind wheel according to any one of claims 1 to 4, wherein a radius of a circle tangential to the plurality of the blades is D, and a diameter of a cylindrical surface of the outer peripheral wall of the outer wheel portion is d, The D and the d satisfy: 0.2 ≤ d / D ≤ 0.3
根据权利要求5所述的风轮，其特征在于，d/D＝0.24。A wind turbine according to claim 5, wherein d/D = 0.24.
根据权利要求1-6中任一项所述的风轮，其特征在于，所述外轮部的出风端上设有多个缺口，多个所述缺口沿所述外轮部的周向方向间隔设置，相邻的两个所述缺口之间平滑过渡。The wind wheel according to any one of claims 1 to 6, wherein a plurality of notches are formed in an air outlet end of the outer wheel portion, and the plurality of the notches are spaced apart in a circumferential direction of the outer wheel portion A smooth transition between the two adjacent gaps is provided.
根据权利要求1-7中任一项所述的风轮，其特征在于，所述轴孔的内壁上设有用于对所述电机轴进行周向定位的扁位结构。The wind wheel according to any one of claims 1 to 7, characterized in that the inner wall of the shaft hole is provided with a flat structure for circumferentially positioning the motor shaft.
根据权利要求8所述的风轮，其特征在于，所述外轮部的内周壁和所述内轮部的外周壁之间设有多个加强筋，多个所述加强筋在所述外轮部的周向方向上间隔设置。The wind turbine according to claim 8, wherein a plurality of reinforcing ribs are provided between an inner peripheral wall of the outer ring portion and an outer peripheral wall of the inner ring portion, and a plurality of the reinforcing ribs are at the outer wheel portion The interval is set in the circumferential direction.
根据权利要求9所述的风轮，其特征在于，与其中一个所述加强筋最相邻的两个所述加强筋之间的夹角为γ，γ满足：γ＝120°。The wind turbine according to claim 9, wherein an angle between two of said reinforcing ribs adjacent to one of said reinforcing ribs is γ, and γ satisfies: γ = 120°.
根据权利要求9所述的风轮，其特征在于，其中两个所述加强筋邻近所述扁位结构的两侧设置，所述其中两个加强筋之间的夹角为η，η满足：30°≤η≤60°。The wind wheel according to claim 9, wherein two of the reinforcing ribs are disposed adjacent to two sides of the flat structure, wherein an angle between the two reinforcing ribs is η, and η satisfies: 30 ° ≤ η ≤ 60 °.
根据权利要求1-11中任一项所述的风轮，其特征在于，在从所述叶片的尾缘到前缘的方向上，所述叶片沿着朝向迎风侧的方向延伸。A wind turbine according to any one of claims 1 to 11, wherein the blade extends in a direction toward the windward side in a direction from a trailing edge of the blade to a leading edge.
根据权利要求12所述的风轮，其特征在于，所述轮毂的旋转中心线为直线m，以所述直线m为中心线的柱面为参考圆柱面，所述参考圆柱面与所述叶片的截面为曲面P，所述曲面P具有点A和点B，所述点A和所述点B的连线为中弦线AB；The wind wheel according to claim 12, wherein a center line of rotation of the hub is a straight line m, a cylinder having the line m as a center line is a reference cylindrical surface, and the reference cylindrical surface and the blade The cross section of the curved surface P, the curved surface P has a point A and a point B, the line connecting the point A and the point B is a central string AB;

过所述中弦线AB且与所述直线m平行的平面为参考面Q，所述曲面P在所述参考面Q上的投影区域为长条形，所述长条形的最大宽度为x，从所述参考圆柱面的径向内侧至所述参考圆柱面的径向外侧方向上，所述x逐渐减小。A plane passing through the center line AB and parallel to the straight line m is a reference plane Q, and the curved surface P is a projection area on the reference surface Q is an elongated shape, and a maximum width of the elongated shape is x, from a radially inner side of the reference cylindrical surface to a radially outer direction of the reference cylindrical surface, x gradually decreases.
根据权利要求1-13中任一项所述的风轮，其特征在于，所述叶片的前缘为曲线，且该曲线上任意一点的曲率中心位于所述前缘的同一侧。A wind wheel according to any one of claims 1 to 13, wherein the leading edge of the blade is curved and the center of curvature of any point on the curve is on the same side of the leading edge.
根据权利要求1-14中任一项所述的风轮，其特征在于，所述叶片的尾缘为曲线，且该曲线上至少存在两点，该两点的曲率中心位于所述尾缘的两侧。The wind wheel according to any one of claims 1 to 14, wherein the trailing edge of the blade is a curve, and there are at least two points on the curve, and the center of curvature of the two points is located at the trailing edge On both sides.
根据权利要求1-15中任一项所述的风轮，其特征在于，所述叶片为三片。A wind wheel according to any one of claims 1 to 15, wherein the blades are three pieces.
根据权利要求1-16中任一项所述的风轮，其特征在于，所述叶片与所述轮毂卡接。The wind wheel according to any one of claims 1 to 16, wherein the blade is engaged with the hub.
一种风机，其特征在于，包括：A fan characterized by comprising:

电机，所述电机具有所述电机轴；和a motor having the motor shaft; and

根据权利要求1-17中任一项所述的风轮。A wind wheel according to any one of claims 1-17.
一种制冷设备，其特征在于，包括根据权利要求18所述的风机。 A refrigeration apparatus characterized by comprising the fan according to claim 18.