Impeller

Abstract

The utility model provides an impeller which comprises a rim, an impeller disc and a plurality of blades. A first contour line and a second contour line which are concentric are formed on the projection of the rim on the horizontal plane, the radius of the first contour line is marked as R1, the radius of the second contour line is marked as R2, and the range of (R1-R2) / R1 is 0.148-0.236. The wheel disc and the rim are coaxially arranged, a third contour line is formed by the projection of the wheel disc on the horizontal plane, the radius of the third contour line is marked as R3, and R3 is smaller than R2. The plurality of blades are arranged between the rim and the wheel disc, each blade comprises an arc plate body and a straight plate body which are connected, the arc plate bodies are connected with the rim, and the straight plate bodies are connected with the rim and the wheel disc respectively. According to the impeller, the wheel ring is additionally arranged, the wheel ring can prevent outlet air from flowing back to the air inlet area, the situation that blown-out air is sucked in again is avoided, and therefore the air outlet effect of the impeller is improved. Meanwhile, by optimizing the size of the rim, the width of the rim is increased as much as possible, so that the range of shielding the blades by the rim is larger, and the outlet air blocking effect of the rim is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of centrifugal heat dissipation devices, specifically to an impeller. Background Technology

[0002] The generator set uses the main power unit as its power system, driving the rotor and impeller to rotate. The rotor rotates within the stator, cutting magnetic lines of force and generating electricity. Meanwhile, the high-speed rotation of the impeller draws in outside air, creating a cooling airflow to cool the rotor and main power unit. Therefore, the impeller plays a crucial role in the overall heat dissipation of the generator. Currently, existing impeller blades typically lack rims, allowing air to be easily drawn into the intake area during operation, thus affecting the impeller's airflow efficiency and its overall heat dissipation effect. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide an impeller that, by adding a wheel rim, can prevent the exhaust air from flowing back to the intake air area, thereby improving the air output effect of the impeller.

[0004] To achieve the above objectives, this utility model provides an impeller, comprising a rim, the projection of which on a horizontal plane forms a concentric first profile line and a second profile line, the second profile line being located within the first profile line, the radius of the first profile line being denoted as R1, the radius of the second profile line being denoted as R2, wherein (R1-R2) / R1 ranges from 0.148 to 0.236; a disc, coaxially arranged with the rim, the projection of which on a horizontal plane forms a third profile line, the radius of which is denoted as R3, and R3 being less than R2; and multiple blades disposed between the rim and the disc, each blade comprising a connected arcuate plate and a straight plate, the arcuate plate being connected to the rim, and the straight plate being connected to both the rim and the disc.

[0005] Preferably, the end of the arc-shaped plate away from the straight plate is close to the outer edge of the wheel rim.

[0006] Preferably, the side of the wheel rim facing away from the arc plate has a convex first conical surface.

[0007] Preferably, the straight plate body has a convex second conical surface on the side opposite to the wheel, the second conical surface is connected to the first conical surface, and the second conical surface has the same taper as the first conical surface.

[0008] Preferably, the straight plate has a first plane, which is connected to the inner arc surface of the circular arc plate. The included angle between two adjacent first planes is denoted as α, and the range of α is 19° to 21°.

[0009] Preferably, the number of blades is even.

[0010] Preferably, the straight plate has a second plane, which is connected to the outer arc surface of the circular arc plate; the projection of the straight plate onto the horizontal plane forms an endpoint closest to the center of the wheel, and the endpoint is located on the straight line formed by the projection of the second plane onto the horizontal plane; the trajectory of the endpoint rotating around the center of the wheel forms a fourth contour line, the radius of which is denoted as R4, wherein the range of R2 / R4 is 1.249 to 1.392.

[0011] Preferably, the trajectory of the center of the inner arc surface of the arc plate rotating around the center of the wheel forms a fifth contour line, the radius of the fifth contour line is denoted as R5, and the range of R2 / R5 is 0.861 to 0.96.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses an impeller that, by adding a rim, can prevent the exhaust air from flowing back into the intake area, thus preventing the blown air from being drawn back in and improving the impeller's airflow efficiency. Simultaneously, by optimizing the rim size and maximizing its width, the rim covers a larger area of ​​the blades, optimizing the overall impeller structure and further enhancing its airflow blocking effect, thereby improving the impeller's heat dissipation effect on the entire machine during operation. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the impeller structure provided in one embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the impeller;

[0017] Figure 3 This is a side view of the impeller;

[0018] Figure 4 for Figure 3 Schematic diagram of AA section in the middle;

[0019] Figure 5 for Figure 4 A schematic diagram showing the relationship between the first, second, fourth, and fifth contour lines under the given conditions;

[0020] Figure 6 for Figure 3 Schematic diagram of the BB cross section in the middle;

[0021] Figure 7 This is a schematic diagram showing the relationship between the first contour line, the second contour line, the third contour line, the fourth contour line, and the fifth contour line;

[0022] Figure 8 This is a schematic diagram of the impeller during operation;

[0023] Figure label:

[0024] 10. Wheel rim; 11. First conical surface; 20. Wheel disc; 30. Blade; 31. Arc plate; 32. Straight plate; 321. Second conical surface; 322. First plane; 323. Second plane. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] like Figure 1-8 As shown, in one embodiment of this utility model, an impeller is provided, including a wheel rim 10, a wheel disk 20, and multiple blades 30. The projection of the wheel rim 10 onto a horizontal plane forms concentric first and second contour lines, with the second contour line located within the first contour line. (See reference...) Figures 4-7 The radius of the first contour line is denoted as R1, which ranges from 85 to 88 mm. The radius of the second contour line is denoted as R2, which ranges from 65 to 75 mm. The ratio of (R1-R2) / R1 is 0.148 to 0.236. The difference between R1 and R2 is the width of the wheel rim 10 projected onto the horizontal plane.

[0032] The wheel 20 is arranged coaxially with the wheel rim 10. The projection of the wheel 20 onto the horizontal plane forms a third contour line, the radius of which is denoted as R3, less than R2, and ranging from 64 to 74 mm. Multiple blades 30 are disposed between the wheel rim 10 and the wheel 20. The number of blades 30 is preferably even; in this embodiment, there are 18 blades 30. Each blade 30 includes a connected arcuate plate 31 and a straight plate 32. The arcuate plate 31 is connected to the wheel rim 10, and the straight plate 32 is connected to both the wheel rim 10 and the wheel 20. Figure 2 and Figure 8 The arrows in the diagram indicate air intake when pointing towards the impeller and air exhaust when moving away from the impeller.

[0033] This embodiment discloses an impeller that, by adding a ring 10, can prevent the exhaust air from flowing back to the intake area (approximately). Figure 2The area marked by the dotted line prevents the blown-out air from being drawn back in, thus improving the impeller's airflow efficiency. Simultaneously, by optimizing the dimensions of the rim 10, its width is maximized, allowing it to cover a larger area of ​​the blades 30. This optimizes the overall impeller structure and further enhances the rim 10's ability to block the airflow, thereby improving the impeller's heat dissipation effect on the entire machine during operation.

[0034] In one embodiment, in order to maximize the shading range of the blade 30 by the rim 10 within a reasonable size, the end of the arc plate 31 away from the straight plate 32 is close to the outer edge of the rim 10.

[0035] In one embodiment, the rim 10 has a convex first conical surface 11 formed on the side opposite to the arc-shaped plate 31. The straight plate 32 has a convex second conical surface 321 formed on the side opposite to the wheel disc 20. The second conical surface 321 is connected to the first conical surface 11, and the taper of the second conical surface 321 is the same as that of the first conical surface 11. (See reference...) Figure 8 During operation, the high-speed rotation of the impeller generates negative pressure, causing airflow to pass through the interior of the stator, thereby cooling both the stator and rotor. The cooled airflow is then blown out by the impeller radially. The design of the first conical surface 11 and the second conical surface 321 optimizes the structure of the wheel rim 10, allowing it to adapt to the shape of the blades 30. Simultaneously, it shortens the gap between the impeller and the housing, thus ensuring sufficient airflow while allowing more cooling air to pass through the interior of the stator.

[0036] In one embodiment, the straight plate 32 has a first plane 322, which is connected to the inner arc surface of the arc plate 31. The included angle between two adjacent first planes 322 is denoted as α, and the range of α is 19° to 21°. By optimizing the included angle between two adjacent straight plates 32, the air outlet speed of the impeller is improved.

[0037] In one embodiment, the straight plate 32 has a second plane 323 connected to the outer arc surface of the arc plate 31. The projection of the second plane 323 onto the horizontal plane forms a straight line. The projection of the straight plate 32 onto the horizontal plane forms an endpoint closest to the center of the wheel 20. This endpoint lies on the straight line, and the trajectory of the endpoint rotating around the center of the wheel 20 forms a fourth contour line. The radius of the fourth contour line is denoted as R4, where R2 / R4 ranges from 1.249 to 1.392. The trajectory of the center of the inner arc surface of the arc plate 31 rotating around the center of the wheel 20 forms a fifth contour line. The radius of the fifth contour line is denoted as R5, where R2 / R5 ranges from 0.861 to 0.96. This structural design further defines the straight plate 32 and the arc plate 31, thereby optimizing the position of the blade 30, further improving the air outlet speed of the impeller, and ensuring the air outlet effect.

[0038] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An impeller, characterized in that, include: The wheel rim (10) has a first profile line and a second profile line that are concentric on the horizontal plane. The second profile line is located inside the first profile line. The radius of the first profile line is denoted as R1 and the radius of the second profile line is denoted as R2. The range of (R1-R2) / R1 is 0.148 to 0.

236. The wheel (20) is arranged coaxially with the rim (10). The projection of the wheel (20) on the horizontal plane forms a third contour line. The radius of the third contour line is denoted as R3, and R3 is smaller than R2. as well as Multiple blades (30) are disposed between the wheel rim (10) and the wheel disk (20). Each blade (30) includes a connected arc plate (31) and a straight plate (32). The arc plate (31) is connected to the wheel rim (10), and the straight plate (32) is connected to the wheel rim (10) and the wheel disk (20) respectively.

2. The impeller according to claim 1, characterized in that, The end of the arc plate (31) away from the straight plate (32) is close to the outer edge of the wheel rim (10).

3. The impeller according to claim 1, characterized in that, The rim (10) has a first conical surface (11) that is convex on the side opposite to the arc plate (31).

4. The impeller according to claim 3, characterized in that, The straight plate (32) has a convex second conical surface (321) on the side opposite to the wheel (20). The second conical surface (321) is connected to the first conical surface (11), and the second conical surface (321) has the same taper as the first conical surface (11).

5. The impeller according to claim 1, characterized in that, The straight plate (32) has a first plane (322), which is connected to the inner arc surface of the arc plate (31). The included angle between two adjacent first planes (322) is denoted as α, and the range of α is 19° to 21°.

6. The impeller according to claim 5, characterized in that, The number of the blades (30) is even.

7. The impeller according to claim 1, characterized in that, The straight plate (32) has a second plane (323), which is connected to the outer arc surface of the arc plate (31); The projection of the straight plate (32) onto the horizontal plane forms an endpoint closest to the center of the wheel (20), and the endpoint is located on the straight line formed by the projection of the second plane (323) onto the horizontal plane; the trajectory of the endpoint rotating around the center of the wheel (20) forms a fourth contour line, and the radius of the fourth contour line is denoted as R4, wherein the range of R2 / R4 is 1.249 to 1.

392.

8. The impeller according to claim 1, characterized in that, The trajectory of the inner arc surface of the arc plate (31) rotating around the center of the wheel (20) forms a fifth contour line, the radius of which is denoted as R5, wherein the range of R2 / R5 is 0.861 to 0.96.

Images