Wing type fan blade cast-aluminum rotor
By designing airfoil-shaped heat dissipation blades and a cast aluminum rotor with beveled end rings, the problem of insufficient motor heat dissipation was solved, achieving more efficient heat dissipation and reduced losses, thus improving motor performance.
Patent Information
- Application Number
- CN202423279490.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional fan blade shapes cannot meet the heat dissipation requirements of motors, leading to overheating, increased rotor losses, and reduced service life.
The airfoil-shaped heat dissipation blades, combined with the inner bevel of the end ring and heat dissipation holes, optimize the air intake and exhaust effect, reduce wind resistance, and increase air volume and heat dissipation.
It reduces motor temperature rise and rotor loss, improves motor efficiency, has a simple structure, and ensures casting reliability.
Smart Images
Figure CN223680845U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to cast aluminium rotor technical field especially relates to wing type fan blade cast aluminium rotor. BACKGROUND
[0002] Cast aluminium rotor is widely used in motor, generator, wind driven generator and some high speed machinery. As a kind of light, high strength material, aluminium alloy has many advantages in rotating machinery, such as reducing the weight of rotor, improving the moment of inertia and fatigue resistance of rotor, and compared with traditional steel rotor, aluminium alloy rotor has certain advantage in production cost and processing difficulty. Therefore, cast aluminium rotor has important application in various motors and mechanical systems.
[0003] At present, in order to improve the need of motor ventilation and heat dissipation, fan blade is often designed on the end of cast aluminium rotor in motor production. The traditional shape of fan blade cannot meet the heat dissipation demand of existing motor, and motor overheating is easy to increase the loss of rotor, which affects service life. Therefore, we propose a wing type fan blade cast aluminium rotor. UTILITY MODEL CONTENTS
[0004] The utility model discloses in view of the prior art's problem, and proposes the following technical scheme:
[0005] Wing type fan blade cast aluminium rotor, including the end ring of being installed in the end of rotor, the side fixedly connected with a plurality of heat dissipation blades of the end ring away from rotor, the cross section of heat dissipation blade is wing type, and the upper and lower two ends are thin small arc, and the middle is bulged, and the junction of end and side is smooth fillet transition shape.
[0006] As the preferred technical scheme, the heat dissipation blade is provided with cavity, and the cross section of cavity is wing type, and the upper and lower two heads are thin small arc, and the middle is bulged, and the junction of head and side is smooth fillet transition shape.
[0007] As the preferred technical scheme, the maximum width of cavity is 8mm, the head is 3mm, the length of two heads of cavity is 43mm, wherein the length from the head close to the inner side of rotor to the middle bulge is 28mm, and the length from the head away from the inner side of rotor to the middle bulge is 15mm.
[0008] As the preferred technical scheme, the inner side of the end ring is provided with bevel.
[0009] As the preferred technical scheme, the bevel is inclined to the inner side of rotor by 20 °.
[0010] As the preferred technical scheme, the end ring and the end of rotor are provided with balance column, and the end ring is provided with a plurality of heat dissipation holes.
[0011] As the preferred technical scheme of the above, the inner diameter of the end ring is 95mm, and the distance from the center of the balance column to the center of the rotor is 118mm.
[0012] The utility model discloses the beneficial effect that:
[0013] 1、 the cross section of the heat dissipation blade is wing type, and the upper and lower two heads are thin small arc shapes, and the middle is bulged, and the length of the fan blade close to the inner side of the rotor core is greater than the outer side, reduces the heat dissipation air resistance, increases the air volume, and the inner ring of the end ring increases 20 ° slope, optimizes the air inlet and outlet effect, reduces the air resistance, increases the rotor heat dissipation amount, reduces the rotor loss etc. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The structure schematic diagram of the wing type fan blade cast aluminum rotor in the embodiment is shown.
[0015] Figure 2 The structure schematic diagram of the end ring in the embodiment is shown.
[0016] Figure 3 The structure schematic diagram of the heat dissipation blade in the embodiment is shown.
[0017] BRIEF DESCRIPTION OF DRAWINGS
[0018] 1、 end ring, 2, heat dissipation blade, 3, balance column, 4, heat dissipation hole. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the utility model technical scheme will be described clearly and completely in conjunction with the embodiment.
[0020] EMBODIMENT
[0021] As shown in Figure 1 , Figure 2 and Figure 3 , the wing type fan blade cast aluminum rotor includes the end ring 1 installed at the end of the rotor, and the end ring 1 is fixedly connected with a plurality of heat dissipation blades 2 away from the side of the rotor, the cross section of the heat dissipation blade 2 is wing type, and the upper and lower two ends are thin small arc shapes, and the middle is bulged, and the connection between the end and the side is smooth round angle transition shape.
[0022] Specifically, the length of the fan blade close to the inner side of the rotor core is greater than the outer side, reduces the heat dissipation air resistance, and increases the air volume.
[0023] As shown in Figure 2 and Figure 3 , the heat dissipation blade 2 is provided with a cavity, and the cross section of the cavity is wing type, and the upper and lower two heads are thin small arc shapes, and the middle is bulged, and the connection between the head and the side is smooth round angle transition shape.
[0024] Specifically, by setting a smooth round corner transition at the connection, it can prevent the workers from being injured during assembly.
[0025] As shown in Figure 3 , the maximum width of the cavity is 8mm, the head is 3mm, and the length of the two heads of the cavity is 43mm, wherein the length from the head close to the inner side of the rotor to the middle bulge is 28mm, and the length from the head away from the inner side of the rotor to the middle bulge is 15mm.
[0026] As shown in Figure 1 , the inner side of the end ring 1 is provided with a bevel, and the bevel is inclined to the inner side of the rotor by 20°.
[0027] Specifically, the air inlet and outlet effect is optimized, the wind resistance is reduced, the rotor heat dissipation is increased, and the rotor loss is reduced.
[0028] As shown in Figure 2 and Figure 3 , the end ring 1 and the rotor end are provided with a balance column 3, and the end ring 1 is provided with a plurality of heat dissipation holes 4, the inner diameter of the end ring 1 is 95mm, and the distance from the center of the balance column 3 to the center of the rotor is 118mm.
[0029] Specifically, two motors with the same model: YE5-315L1-4 are used as sample machines for comparison, in an environment with room temperature of 11.2°, the rated no-load current of the standard sample machine is 72.47A, the rated no-load power is 2160W, the mechanical loss is 838.5W, the iron loss is 1122W, the rated torque is 1025Nm, the full-load input power is 165323.3W, the full-load current is 280.67A, the full-load power factor is 0.895 (of which, the standard value is 0.9, and the limit value is 0.88), the full-load slip rate is 0.67%, the stator copper loss is 1228.9W, the rotor copper loss is 1070.9W, the stray loss is 836.4W, the efficiency is 96.91% (of which, the standard value is 97.2, and the limit value is 96.92), the stator winding temperature rise is 34.72K (of which, the standard value is 80K), the stator winding resistance (60.6℃) is 0.0156Ω, the hot-state insulation resistance is 500MΩ, the bearing temperature is 37℃, the machine shell temperature is 37℃, and the withstand voltage test is 1760V (of which, the standard value is 1760V).
[0030] The rated no-load current of the prototype using the design is 72.47A, the rated no-load power is 2160W, the mechanical loss is 775W, the iron loss is 1081W, the rated torque is 1025Nm, the full-load input power is 165498.7W, the full-load current is 278.69A, the full-load power factor is 0.8937 (of which, the standard value is 0.9, and the limit value is 0.88), the full-load slip rate is 0.641%, the stator copper loss is 1221.1W, the rotor copper loss is 1021.6W, the stray loss is 836.4W, the efficiency is 96.9154% (of which, the standard value is 97.2, and the limit value is 96.92), the stator winding temperature rise is 32.69K (of which, the standard value is 80K), the stator winding resistance (60.6℃) is 0.0156Ω, the hot-state insulation resistance is 500MΩ, the bearing temperature is 34.3℃, the machine shell temperature is 34.2℃, and the withstand voltage test is 1760V (of which, the standard value is 1760V);
[0031] In the environment of room temperature 34.3°, the rated no-load current of the standard prototype is 72.47A, the rated no-load power is 2160W, the mechanical loss is 867.4W, the iron loss is 1145W, the rated torque is 1025Nm, the full-load input power is 165709.9W, the full-load current is 287.98A, the full-load power factor is 0.8997 (of which, the standard value is 0.9, and the limit value is 0.88), the full-load slip rate is 0.77%, the stator copper loss is 1231.1W, the rotor copper loss is 1091.6W, the stray loss is 849.3W, the efficiency is 96.912% (of which, the standard value is 97.2, and the limit value is 96.92), the stator winding temperature rise is 37.14K (of which, the standard value is 80K), the stator winding resistance (60.6℃) is 0.0156Ω, the hot-state insulation resistance is 500MΩ, the bearing temperature is 56.3℃, the machine shell temperature is 56.2℃, and the withstand voltage test is 1760V (of which, the standard value is 1760V);
[0032] The rated no-load current of the prototype adopting the design is 72.54A, the rated no-load power is 2040W, the mechanical loss is 784W, the iron loss is 1095W, the rated torque is 1025Nm, the full-load input power is 165044.3W, the full-load current is 281.999A, the full-load power factor is 0.8892 (in which, the standard value is 0.9, and the limit value is 0.88), the full-load slip is 0.658%, the stator copper loss is 1223.3W, the rotor copper loss is 1046.8W, the stray loss is 816W, the efficiency is 96.99% (in which, the standard value is 97.2, and the limit value is 96.92), the stator winding temperature rise is 36.64K (in which, the standard value is 80K), the stator winding resistance (60.6 DEG C) is 0.0156 omega, the hot-state insulation resistance is 500M omega, the bearing temperature is 53.4 DEG C, the machine shell temperature is 54 DEG C, and the withstand voltage test is 1760V (in which, the standard value is 1760V).
[0033] According to the above experiment comparison, it is found that the utility model reduces the temperature rise of the motor, reduces the mechanical loss and rotor loss of the motor, improves the efficiency of the motor, has simple structure, guarantees the reliability of the rotor cast aluminum, optimizes the air inlet effect, and improves the performance of the motor.
[0034] The above examples are only used to illustrate the technical scheme of the utility model, and not limit it.
Claims
1. A cast aluminium rotor of aerofoil type fan blade comprising end rings (1) mounted at the ends of the rotor, characterised in that: The end ring (1) is fixedly connected with several heat dissipation blades (2) away from the rotor, the cross section of the heat dissipation blade (2) is in the shape of an airfoil, the upper and lower ends are thin and small circular arc shapes, the middle is bulged, and the connection between the end and the side is in the shape of a smooth round corner transition.
2. The airfoil-shaped blade cast aluminum rotor according to claim 1, wherein, The heat dissipation blade (2) is provided with a cavity, the cross section of the cavity is in the shape of an airfoil, the upper and lower ends are thin and small circular arc shapes, the middle is bulged, and the connection between the head and the side is in the shape of a smooth round corner transition.
3. The airfoil-shaped cast aluminum rotor of claim 2, wherein, The maximum width of the cavity is 8mm, the head is 3mm, the length of the two ends of the cavity is 43mm, the length from the end close to the inner side of the rotor to the middle is 28mm, and the length from the end away from the inner side of the rotor to the middle is 15mm.
4. The airfoil-shaped blade cast aluminum rotor of claim 1, wherein, The inner side of the end ring (1) is provided with a bevel.
5. The airfoil-shaped cast aluminum rotor of claim 4, wherein, The bevel is inclined to the inner side of the rotor by 20°.
6. The airfoil-shaped blade cast aluminum rotor of claim 1, wherein, The end ring (1) is provided with a balance column (3) at the end of the rotor, and the end ring (1) is provided with several heat dissipation holes (4).
7. The airfoil-shaped cast aluminum rotor of claim 6, wherein, The inner diameter of the end ring (1) is 95mm, and the distance from the center of the balance column (3) to the center of the rotor is 118mm.