Wind wheel and fan equipment

Abstract

The utility model discloses a wind wheel and fan equipment, the wind wheel comprises a hub and a plurality of blades, the plurality of blades are arranged on the peripheral side of the hub and are arranged at intervals along the circumferential direction of the hub, the blades are provided with outer edges far away from the hub in the radial direction of the wind wheel, the outer edges are provided with turnups, and the turnups are provided with flanges. The turnup is arranged along the outer edge in an extending mode, and the turnup bends and extends towards the air inlet side of the wind wheel. According to the wind wheel, the vortex noise at the blade top position is reduced, the noise value of a part of frequency bands is weakened, and the overall use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a wind wheel and a fan device. Background Art

[0002] The impeller is a crucial component of an air conditioner's outdoor unit. Its overall performance impacts the unit's operation and directly influences the user experience. However, existing impellers for air conditioners suffer from heavy weight, low energy efficiency, and high wind noise. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a wind wheel, which reduces the eddy current noise at the blade tip position, weakens the noise value in some frequency bands, and improves the overall user experience.

[0005] The embodiment of the present invention also provides a wind turbine device including the above-mentioned wind wheel.

[0006] The wind wheel of the utility model embodiment comprises:

[0007] wheel hub;

[0008] Multiple blades are provided on the outer peripheral side of the hub and are arranged at intervals along the circumference of the hub. The blades have an outer edge that is away from the hub in the radial direction of the wind wheel. The outer edge is provided with a flange, and the flange is extended along the outer edge and bent and extended toward the wind inlet side of the wind wheel.

[0009] In some embodiments, the blade has a cross-sectional profile line, and the cross-sectional profile line is offset toward the wind inlet side of the wind wheel.

[0010] In some embodiments, the cross-sectional profile includes a first profile segment, a second profile segment, a third profile segment, and a fourth profile segment sequentially arranged along the direction from the hub to the outer edge, the first profile segment and the second profile segment both protrude toward the wind inlet side, the third profile segment and the fourth profile segment both protrude toward the wind outlet side of the wind wheel, and the fourth profile segment corresponds to the flange arrangement.

[0011] In some embodiments, the first-shaped line segment and the second-shaped line segment can both be arc-shaped, the first-shaped line segment matches a first base circle, the second-shaped line segment matches a second base circle, and the diameter of the first base circle is not less than the diameter of the second base circle.

[0012] In some embodiments, the third line segment matches a third base circle, the fourth line segment matches a fourth base circle, a diameter of the first base circle is not less than a diameter of the third base circle, and a diameter of the fourth base circle is less than the diameter of the third base circle.

[0013] In some embodiments, a ratio of the diameter of the first base circle to an outer diameter of the wind wheel is 0.81 to 1.16.

[0014] And / or, a ratio of the diameter of the second base circle to the outer diameter of the wind wheel is 0.46 to 0.82.

[0015] And / or, a ratio of the diameter of the third base circle to the outer diameter of the wind wheel is 0.46 to 0.82.

[0016] And / or, a ratio of the diameter of the fourth base circle to the outer diameter of the wind wheel is 0.01 to 0.1.

[0017] In some embodiments,

[0018] The diameter of the first base circle is 350 mm to 500 mm.

[0019] And / or, the diameter of the second base circle is 200 mm to 350 mm.

[0020] And / or, the diameter of the third base circle is 200 mm to 350 mm.

[0021] And / or, the diameter of the fourth base circle is 5 mm to 40 mm.

[0022] In some embodiments, the blade has a suction surface facing the air inlet side, and the suction surface is provided with a recess.

[0023] In some embodiments, a distance between an outer peripheral edge of the recess and an outer peripheral edge of the blade is 3 mm to 20 mm.

[0024] And / or, a lower concave dimension of the recess in the axial direction of the wind wheel is 0.3 mm to 1.5 mm.

[0025] In some embodiments, a radial dimension of the hub gradually increases along a direction from the air inlet side of the wind wheel to the air outlet side of the wind wheel.

[0026] In some embodiments, the hub has a circumferential side wall, a radial dimension of the circumferential side wall gradually increases along a direction from the air inlet side to the air outlet side, and a generatrix of the circumferential side wall and a central axis of the hub form an included angle a, 0 degrees ≤ an angle of the included angle a ≤ 30 degrees.

[0027] In some embodiments, the end surface of the circumferential side wall facing the air outlet side fluctuates along the circumferential direction of the hub and forms a plurality of grooves, and the plurality of grooves and the plurality of blades are alternately arranged along the circumference of the hub.

[0028] In some embodiments, the ratio of the radial dimension of the end of the hub facing the wind inlet side to the outer diameter of the wind wheel is 0.173 to 0.25;

[0029] and / or, a ratio of a radial dimension of an end portion of the hub facing the air outlet side to an outer diameter of the wind wheel is 0.24 to 0.32;

[0030] And / or, the ratio of the axial length of the hub to the outer diameter of the wind wheel is 0.1 to 0.2.

[0031] In some embodiments, the radial dimension of the end portion of the hub facing the air inlet side is 75 mm to 105 mm;

[0032] and / or, a radial dimension of the end portion of the hub facing the air outlet side is 105 mm to 135 mm;

[0033] And / or, the length of the hub in the axial direction is 43 mm to 83 mm.

[0034] The wind turbine device of the embodiment of the present invention includes the wind wheel as described in any of the above embodiments.

[0035] Beneficial effects: The wind wheel and wind turbine equipment of the embodiment of the utility model reduce the eddy current noise at the blade tip of the wind wheel, weaken the noise value of some frequency bands, and improve the overall user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of the wind wheel according to an embodiment of the present utility model.

[0037] Figure 2 It is a side view schematic diagram of the wind wheel of an embodiment of the present utility model.

[0038] Figure 3 It is a schematic diagram of the cross-sectional profile of the blades of the wind wheel according to an embodiment of the present utility model.

[0039] Figure 4 It is a schematic diagram of the base circle corresponding to each profile line segment of the cross-sectional profile of an embodiment of the present utility model.

[0040] Figure 5 It is a schematic diagram of the arrangement of the recessed parts on the blade of an embodiment of the present utility model.

[0041] Figure 6 It is a schematic axial cross-sectional view of the wheel hub according to an embodiment of the present utility model.

[0042] Figure 7 Schematic diagram of the groove on the wheel hub according to an embodiment of the present invention.

[0043] Figure 8 2 is a comparative diagram of frequency noise curves of an embodiment of the present invention.

[0044] Figure 9 It is a wind volume noise curve diagram of an embodiment of the present utility model.

[0045] Reference numerals:

[0046] 1- hub; 11- circumferential sidewall; 111- busbar; 112- groove; 12- line parallel to the central axis;

[0047] 2-blade; 21-outer edge; 22-flange; 23-suction surface; 24-pressure surface; 25-section profile; 251-first profile segment; 2511-first base circle; 252-second profile segment; 2521-second base circle; 253-third profile segment; 2531-third base circle; 254-fourth profile segment; 2541-fourth base circle; 26-recessed portion. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0049] like Figure 1 As shown, the wind wheel of the embodiment of the present invention includes a hub 1 and a plurality of blades 2. The hub 1 can be made of plastic or the like, and the hub 1 as a whole can be a cap-shaped structure and can be integrally formed by injection molding.

[0050] A plurality of blades 2 are provided on the outer peripheral side of the hub 1 and are spaced apart along the circumference of the hub 1, for example Figure 1 and Figure 2 As shown, there may be three blades 2 , and the three blades 2 may be integrally formed on the outer peripheral side of the hub 1 by injection molding, and the three blades 2 may be arranged at equal intervals along the circumference of the hub 1 .

[0051] The blade 2 has an outer edge 21 that is away from the hub 1 in the radial direction of the wind rotor, for example Figure 1 As shown, the outer edge 21 of the blade 2 can be regarded as the outermost edge area of ​​the wind rotor. The outer edge 21 is provided with a flange 22, which extends along the outer edge 21 and bends and extends toward the wind inlet side of the wind rotor.

[0052] For example, the flange 22 can be integrally formed on the outer edge 21 of the blade 2 by injection molding, and the flange 22 can be in the shape of a long strip as a whole, and can be arranged along the extension direction of the outer edge 21. Figure 1 and Figure 2 As shown, the rotor may include an air inlet side and an air outlet side arranged opposite to each other in the axial direction of the rotor. When the rotor rotates, air can enter through the air inlet side and then be discharged through the air outlet side, thereby meeting the ventilation requirements. The flange 22 on each blade 2 can be folded toward the air inlet side of the rotor, and the flange 22 can be smoothly connected to the blade bodies 2 by means of arcs, rounded corners, etc.

[0053] The wind wheel of the embodiment of the present invention is provided with a flange 22 on the outer edge 21 of the blade 2. The flange 22 will be tilted toward the wind inlet side, and the tilted flange 22 will enhance the disturbance to the outer peripheral edge of the blade 2, thereby avoiding the formation of local eddy currents, and thus avoiding the situation where there is a large eddy current noise at the blade top position, and at the same time, it also weakens the noise value of some frequency bands, thereby improving the user experience.

[0054] In some embodiments, the blade 2 has a cross-sectional profile 25, which is offset toward the wind inlet side of the wind wheel. For example, the cross-sectional profile 25 may be a blade 2 bone line of the blade 2, which may be specifically considered as the center line of the cross section along the streamline direction of the blade 2. Figure 3 As shown, the inner end of the cross-sectional profile 25 can be connected to the end of the hub 1 facing the wind inlet side, and the position of the cross-sectional profile 25 in the axial direction of the hub 1 can be offset to the wind inlet side of the wind rotor as a whole, that is, most of the cross-sectional profile 25 can be offset to the outer side of the end surface of the hub 1 facing the wind inlet side (which can be regarded as Figure 3 (upper side in the middle).

[0055] When the wind wheel rotates, the blade 2 will bend and deform downward as a whole under the action of the airflow. By pre-shifting the shape of the blade 2 upward, the deformation of the blade 2 toward the air outlet side can be offset, which is beneficial to reducing the wind noise caused by the deformation of the blade 2. Secondly, this offset setting of the blade 2 can also increase the structural strength of the blade 2, and under the same structural strength, the weight and thickness of the blade 2 can be appropriately reduced, thereby saving costs.

[0056] In some embodiments, the cross-sectional profile 25 includes a first profile segment 251, a second profile segment 252, a third profile segment 253 and a fourth profile segment 254 arranged in sequence along the direction from the hub 1 to the outer edge 21. The first profile segment 251 and the second profile segment 252 both protrude toward the wind inlet side, the third profile segment 253 and the fourth profile segment 254 both protrude toward the wind outlet side of the wind wheel, and the fourth profile segment 254 is arranged corresponding to the flange 22.

[0057] For example,Figure 3 As shown, the direction from the hub 1 to the outer edge 21 can be from the inside to the outside. Along the direction from the inside to the outside, the cross-sectional profile 25 can include multiple profile segments, and the multiple profile segments include the first profile segment 251, the second profile segment 252, the third profile segment 253 and the fourth profile segment 254 arranged in sequence from the inside to the outside.

[0058] The first line segment 251, the second line segment 252, the third line segment 253 and the fourth line segment 254 can all be arc-shaped, wherein the first line segment 251 and the second line segment 252 are generally toward the wind inlet side ( Figure 3 The third line segment 253 and the fourth line segment 254 are both generally convex to the air outlet side ( Figure 3 The fourth profile line segment 254 may be the cross-sectional profile line 25 of the flange 22.

[0059] Therefore, by designing the cross-sectional profile 25 into the form of multiple profile segments, on the one hand, the use requirements of the design of offsetting the blade 2 upward are met, and on the other hand, the overall structural strength of the blade 2 can be further enhanced, which is conducive to further reducing the wind noise caused by deformation, and is also conducive to achieving a lighter and thinner design of the blade 2 under the same structural strength, thereby achieving cost reduction and efficiency improvement.

[0060] In some embodiments, as Figure 4 As shown, the first type line segment 251 and the second type line segment 252 can both be arc-shaped, and the first type line segment 251 is matched with the first base circle 2511, that is, the first type line segment 251 can be regarded as a part of the arc segment of the first base circle 2511, and the second type line segment 252 is matched with the second base circle 2521, that is, the second type line segment 252 can be regarded as a part of the arc segment of the second base circle 2521, and the center of the first base circle 2511 and the center of the second base circle 2521 can both be below the cross-sectional line 25.

[0061] The diameter of the first base circle 2511 is not less than the diameter of the second base circle 2521. Figure 4 As shown, the diameter of the first base circle 2511 can be size D1, and the diameter of the second base circle 2521 can be size D2, and size D1 can be larger than size D2. This gradually decreasing curvature can ensure that the portion of the blade 2 away from the hub 1 also has a higher structural strength, and also meet the design requirement of gradually offsetting the blade 2 upward.

[0062] In some embodiments, as Figure 4As shown, the third type line segment 253 and the fourth type line segment 254 can also be arc-shaped. The third type line segment 253 is matched with the third base circle 2531, that is, the third type line segment 253 can be regarded as a part of the arc segment of the third base circle 2531, and the fourth type line segment 254 is matched with the fourth base circle 2541, that is, the fourth type line segment 254 can be regarded as a part of the arc segment of the fourth base circle 2541, and the center of the third base circle 2531 and the center of the fourth base circle 2541 can both be above the cross-sectional line 25.

[0063] The diameter of the first base circle 2511 is not less than the diameter of the third base circle 2531, and the diameter of the fourth base circle 2541 is less than the diameter of the third base circle 2531. Figure 4 As shown, the diameter of the third base circle 2531 may be size D3, and the diameter of the fourth base circle 2541 may be size D4. The size D1 may be larger than the size D3, while the size D4 may be much smaller than the size D3.

[0064] As a result, the overall curvature of the blade 2 is generally driven in a progressive direction from the inside to the outside, thereby fully ensuring that the part of the blade 2 away from the hub 1 also has a higher structural strength, especially the tip part, and fully meeting the design requirement of gradually offsetting the blade 2 upward.

[0065] In some embodiments, the ratio of the diameter of the first base circle 2511 to the outer diameter of the wind wheel is 0.81 to 1.16. Figure 5 As shown, the outer diameter of the wind wheel can be Figure 5 The diameter of the circle drawn by the dotted line is the dimension D. The ratio of the dimension D1 to the dimension D can be 0.81, 0.85, 0.9, 0.95, 1.0, 1.1, 1.157, 1.16, etc.

[0066] In some embodiments, the ratio of the diameter of the second base circle 2521 to the outer diameter of the wind wheel is 0.46 to 0.82. For example, the ratio of the above-mentioned dimension D2 to the dimension D can be 0.46, 0.461, 0.47, 0.5, 0.55, 0.6, 0.65, 0.7, 0.8, 0.81, 0.82, etc.

[0067] In some embodiments, the ratio of the diameter of the third base circle 2531 to the outer diameter of the wind wheel is 0.46 to 0.82. For example, the ratio of the above-mentioned dimension D3 to the dimension D can be 0.46, 0.461, 0.47, 0.5, 0.55, 0.6, 0.65, 0.7, 0.8, 0.81, 0.82, etc.

[0068] In some embodiments, the ratio of the diameter of the fourth base circle 2541 to the outer diameter of the wind wheel is 0.01 to 0.1. For example, the ratio of the dimension D4 to the dimension D can be 0.01, 0.0115, 0.0120, 0.0200, 0.0250, 0.0300, 0.0400, 0.0500, 0.0600, 0.0700, 0.0800, 0.0900, 0.0926, 0.1, etc.

[0069] Therefore, by limiting the above-mentioned proportional relationship, the processing of wind wheels of different specifications and sizes is facilitated. For example, when applied to multi-split units or commercial machines, it facilitates the proportional enlargement of the wind wheel, thereby improving the convenience of processing wind wheels of different specifications and sizes.

[0070] In some embodiments, the diameter of the first base circle 2511 is 350 mm to 500 mm. Figure 4 As shown, the dimension D1 may be 350 mm, 360 mm, 370 mm, 400 mm, 410 mm, 450 mm, 500 mm, etc. Preferably, the dimension D1 may be 400 mm.

[0071] In some embodiments, the diameter of the second base circle 2521 is 200 mm to 350 mm. Figure 4 As shown, the dimension D2 may be 200 mm, 210 mm, 250 mm, 300 mm, 310 mm, 320 mm, 350 mm, etc. Preferably, the dimension D2 is 282 mm.

[0072] In some embodiments, the diameter of the third base circle 2531 is 200 mm to 350 mm. Figure 4 As shown, the dimension D3 may be 200 mm, 210 mm, 250 mm, 300 mm, 310 mm, 320 mm, 350 mm, etc. Preferably, the dimension D3 is 244 mm.

[0073] In some embodiments, the diameter of the fourth base circle 2541 is 5 mm to 40 mm. Figure 4 As shown, the dimension D4 may be 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, etc. Preferably, the dimension D4 is 20 mm.

[0074] In some embodiments, the blade 2 has a suction surface 23 facing the wind inlet side, and the suction surface 23 is provided with a recessed portion 26. Figure 5As shown, the suction surface 23 can be considered the surface of the blade 2 facing the windward side, and the surface of the blade 2 opposite the suction surface 23 in the axial direction of the hub 1 constitutes the pressure surface 24. The recessed portion 26 can be formed on the suction surface 23 of the blade 2 by die-casting, integral injection molding, etc., and the overall outer peripheral shape of the recessed portion 26 can be generally consistent with the outer peripheral shape of the blade 2.

[0075] On the one hand, the provision of the recessed portion 26 can enhance the overall structural strength of the blade 2, thereby helping to reduce problems such as wind noise caused by deformation. On the other hand, the provision of the recessed portion 26 can also reduce the material consumption of the blade 2, thereby reducing the overall weight of the wind wheel and saving costs.

[0076] In some embodiments, the distance between the outer peripheral edge of the recessed portion 26 and the outer peripheral edge of the blade 2 is 3 mm to 20 mm. Figure 5 As shown, the distance between the outer peripheral edge of the recess 26 and the outer peripheral edge of the blade 2 can be dimension L, and the value of dimension L in each direction can be 3mm, 4mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, etc.

[0077] This makes the distance between the recess 26 and the outer peripheral edge of the blade 2 matched, fully ensuring the structural strength of the outer peripheral edge of the blade 2 and increasing the area of ​​the recess 26 as much as possible, thereby further reducing material consumption and achieving a weight reduction effect.

[0078] In some embodiments, the concave dimension of the concave portion 26 in the axial direction of the wind wheel is 0.3 mm to 1.5 mm. For example, the concave portion 26 as a whole can be a groove-shaped structure, and the concave dimension of the concave portion 26 can specifically be the groove depth dimension along the axial direction of the wind wheel, such as Figure 5 As shown, the concave dimension can be specifically dimension M, which can be 0.3mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, etc. Preferably, dimension M is 0.8mm. Thus, while reducing weight and cost through the concave portion 26, it also avoids the situation where the blade 2 is locally too thin.

[0079] In some embodiments, the radial dimension of the hub 1 gradually increases from the wind inlet side of the wind rotor to the wind outlet side of the wind rotor. Figure 6 As shown, the outer shape of the hub 1 can be generally a frustum structure, so that the direction from the air inlet side to the air outlet side can be from top to bottom, and the radial size of the hub 1 can gradually increase along the direction from top to bottom.

[0080] In this way, the radial dimension of the upper end of the hub 1 can be made smaller, thereby increasing the size of the air inlet surface on the air inlet side, so that the wind pressure of the wind wheel is higher than that of the wind wheel in the prior art, thereby making it possible to increase the air volume of the wind wheel relative to the wind wheel in the prior art under the condition of the same noise, that is, to help reduce the operating noise of the wind wheel under the condition of obtaining the same air volume.

[0081] In some embodiments, the hub 1 has a circumferential side wall 11, the radial dimension of the circumferential side wall 11 gradually increases along the direction from the air inlet side to the air outlet side, and the busbar 111 of the circumferential side wall 11 and the central axis of the hub 1 form an angle a, and the angle of 0 degrees ≤ angle a ≤ 30 degrees.

[0082] For example, Figure 6 As shown, the circumferential sidewall 11 of the hub 1 can be generally shaped like a trumpet, and the radial dimension of the circumferential sidewall 11 gradually increases from top to bottom. The generatrix 111 of the circumferential sidewall 11 is the line that forms the circumferential sidewall 11 by rotating around the circumference of the hub 1 once. The generatrix 111 forms an angle a with the center axis of the hub 1, as shown in FIG. Figure 6 The figure shows the angle a formed between the busbar 111 and the line parallel to the central axis 12. Angle a can be 1 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, etc. Preferably, angle a is 10 degrees. This allows the hub 1 to have a better mold opening angle, while reducing the end of the hub 1 on the air inlet side, thereby facilitating processing and manufacturing.

[0083] In some embodiments, the busbar 111 of the circumferential side wall 11 can be an arc or a straight line. When it is an arc, the busbar 111 can protrude away from the axis of the wind wheel, so that the circumferential side wall 11 has better airflow fluidity, which is conducive to further reducing wind noise.

[0084] In some embodiments, the end surface of the circumferential side wall 11 facing the air outlet side fluctuates along the circumferential direction of the hub 1 and is configured with a plurality of grooves 112. The plurality of grooves 112 and the plurality of blades 2 are alternately arranged along the circumference of the hub 1. For example, Figure 7 As shown, the groove 112 can be a C-shaped groove, and there can be three grooves 112. The three grooves 112 and the three blades 2 can be arranged alternately along the circumferential direction. The provision of the grooves 112 can further reduce consumables and reduce the weight of the wind wheel.

[0085] In some embodiments, the ratio of the radial dimension of the end of the hub 1 facing the wind inlet side to the outer diameter of the wind wheel is 0.17 to 0.25. Figure 6As shown, the radial dimension of the end portion of the hub 1 on the air inlet side may be dimension D5, and the ratio of dimension D5 to the above-mentioned dimension D may be 0.17, 0.173, 0.180, 0.190, 0.200, 0.210, 0.220, 0.230, 0.240, 0.243, 0.25, etc.

[0086] In some embodiments, the ratio of the radial dimension of the end of the hub 1 facing the wind outlet side to the outer diameter of the wind wheel is 0.24 to 0.32. Figure 6 As shown, the radial dimension of the end portion of the hub 1 on the air outlet side can be dimension D6, and the ratio of dimension D6 to the above-mentioned dimension D can be 0.24, 0.243, 0.250, 0.260, 0.270, 0.280, 0.290, 0.300, 0.310, 0.3125, 0.320, etc.

[0087] In some embodiments, the ratio of the axial length of the hub 1 to the outer diameter of the wind wheel is 0.1 to 0.2. Figure 6 As shown, the axial length dimension of the hub 1 can be dimension H, and the ratio of dimension H to the above-mentioned dimension D can be 0.1, 0.150, 0.160, 0.170, 0.180, 0.190, 0.192, 0.2, etc.

[0088] This further facilitates the processing of wind wheels of different specifications and sizes.

[0089] In some embodiments, the radial dimension of the end of the hub 1 facing the air inlet side is 75 mm to 105 mm. For example, the radial dimension of the end of the hub 1 facing the air inlet side can be dimension D5, and dimension D5 can be 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm, 105 mm, etc.

[0090] In some embodiments, the radial dimension of the end of the hub 1 facing the air outlet side is 105 mm to 135 mm. For example, the radial dimension of the end of the hub 1 facing the air outlet side can be dimension D6, and dimension D6 can be 105 mm, 100 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, etc.

[0091] In some embodiments, the axial length of the hub 1 is 43 mm to 83 mm. For example, the axial length of the hub 1 may be dimension H, which may be 43 mm, 53 mm, 63 mm, 75 mm, 80 mm, 81 mm, 83 mm, etc.

[0092] The following describes the fan equipment according to the embodiment of the present invention.

[0093] The fan device of the embodiment of the present invention includes a wind wheel, which can be a wind wheel as described in any of the above embodiments. The fan device can be an air conditioner outdoor unit. In other embodiments, the fan device can also be an axial flow fan device such as an industrial fan or an electric fan.

[0094] The wind turbine device of the embodiment of the present invention adopts the above-mentioned wind wheel. Compared with the existing product wind wheel, the weight of the wind wheel of the present application is reduced from 520g of the prototype to 380g, the weight of the wind wheel consumables is reduced by 138g, and the cost of each wind wheel is reduced by 1.38 yuan.

[0095] Secondly, if Figure 8 As shown in the figure, by comparing the noise frequency curve of the wind wheel in the prior art, under the condition of the same air volume, the noise level of the whole machine of the present application is reduced by 0.8dB(A), that is, Figure 8 The noise peak of the middle A curve is 0.8dB(A) lower than the noise peak of the B curve of the present application, and the noise at the 3-blade harmonic frequency (200HZ) and the 5-blade harmonic frequency (600HZ) can be weakened. The sound quality of the wind wheel of the present application is better than that of the wind wheel in the prior art.

[0096] In addition, if Figure 9 As shown, Figure 9 is a wind volume noise curve diagram of the existing wind wheel and the wind wheel of this application, and Figure 9 Specifically, the noise spectrum of the existing wind wheel and the wind wheel of the present application at 900 rpm is shown. As can be seen from the figure, the curve C of the wind wheel of the existing technology is generally higher than the curve D of the present application. The wind wheel of the present application has a lower noise value, which improves the user experience.

[0097] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A wind wheel, characterized in that: include: Wheel hub (1); A plurality of blades (2) are provided on the outer peripheral side of the hub (1) and are spaced apart along the circumference of the hub (1); the blades (2) have an outer edge (21) away from the hub (1) in the radial direction of the wind wheel; the outer edge (21) is provided with a flange (22); the flange (22) is extended along the outer edge (21), and the flange (22) is bent and extended toward the wind inlet side of the wind wheel.

2. The wind wheel according to claim 1, characterized in that: The blade (2) has a cross-sectional profile (25), and the cross-sectional profile (25) is offset toward the wind inlet side of the wind wheel.

3. The wind wheel according to claim 2, characterized in that: The cross-sectional profile (25) includes a first profile segment (251), a second profile segment (252), a third profile segment (253) and a fourth profile segment (254) sequentially arranged along a direction from the hub (1) to the outer edge (21); the first profile segment (251) and the second profile segment (252) both protrude toward the wind inlet side; the third profile segment (253) and the fourth profile segment (254) both protrude toward the wind outlet side of the wind wheel; and the fourth profile segment (254) is arranged corresponding to the flange (22).

4. The wind wheel according to claim 3, characterized in that: The first-shaped line segment (251) and the second-shaped line segment (252) can both be arc-shaped, the first-shaped line segment (251) is matched with a first base circle (2511), and the second-shaped line segment (252) is matched with a second base circle (2521), and the diameter of the first base circle (2511) is not less than the diameter of the second base circle (2521).

5. The wind wheel according to claim 4, characterized in that: The third type line segment (253) is matched with a third base circle (2531), and the fourth type line segment (254) is matched with a fourth base circle (2541). The diameter of the first base circle (2511) is not less than the diameter of the third base circle (2531), and the diameter of the fourth base circle (2541) is less than the diameter of the third base circle (2531).

6. The wind wheel according to claim 5, characterized in that: The ratio of the diameter of the first base circle (2511) to the outer diameter of the wind wheel is 0.81 to 1.16; And / or, the ratio of the diameter of the second base circle (2521) to the outer diameter of the wind wheel is 0.46 to 0.82; And / or, the ratio of the diameter of the third base circle (2531) to the outer diameter of the wind wheel is 0.46 to 0.82; And / or, the ratio of the diameter of the fourth base circle (2541) to the outer diameter of the wind wheel is 0.01 to 0.

1.

7. The wind wheel according to claim 5, characterized in that: The diameter of the first base circle (2511) is 350 mm to 500 mm; And / or, the diameter of the second base circle (2521) is 200 mm to 350 mm; And / or, the diameter of the third base circle (2531) is 200 mm to 350 mm; And / or, the diameter of the fourth base circle (2541) is 5 mm to 40 mm.

8. The wind wheel according to claim 1, characterized in that: The blade (2) has a suction surface (23) facing the wind inlet side, and the suction surface (23) is provided with a recessed portion (26).

9. The wind wheel according to claim 8, characterized in that: The distance between the outer peripheral edge of the recessed portion (26) and the outer peripheral edge of the blade (2) is 3 mm to 20 mm; And / or, the concave dimension of the recessed portion (26) in the axial direction of the wind wheel is 0.3 mm to 1.5 mm.

10. The wind wheel according to any one of claims 1 to 9, characterized in that: The radial dimension of the hub (1) gradually increases along the direction from the wind inlet side of the wind wheel to the wind outlet side of the wind wheel.

11. The wind wheel according to claim 10, characterized in that: The hub (1) has a circumferential side wall (11), the radial dimension of the circumferential side wall (11) gradually increases along the direction from the air inlet side to the air outlet side, and a generatrix (111) of the circumferential side wall (11) and the central axis of the hub (1) form an angle a, and an angle of 0 degrees ≤ angle a ≤ 30 degrees.

12. The wind wheel according to claim 11, characterized in that: The end surface of the circumferential side wall (11) facing the air outlet side fluctuates along the circumferential direction of the hub (1) and forms a plurality of grooves (112); the plurality of grooves (112) and the plurality of blades (2) are alternately arranged along the circumference of the hub (1).

13. The wind wheel according to claim 10, characterized in that: The ratio of the radial dimension of the end portion of the hub (1) facing the wind inlet side to the outer diameter of the wind wheel is 0.17 to 0.25; And / or, the ratio of the radial dimension of the end portion of the hub (1) facing the wind outlet side to the outer diameter of the wind wheel is 0.24 to 0.32; And / or, the ratio of the axial length of the hub (1) to the outer diameter of the wind wheel is 0.1 to 0.

2.

14. The wind wheel according to claim 10, characterized in that: The radial dimension of the end portion of the hub (1) facing the air inlet side is 75 mm to 105 mm; And / or, the radial dimension of the end portion of the hub (1) facing the air outlet side is 105 mm to 135 mm; And / or, the length dimension of the hub (1) in the axial direction is 43 mm to 83 mm.

15. A fan device, characterized in that: The wind wheel comprises the wind wheel as claimed in any one of claims 1 to 14.

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