A new type of welding high-speed dust collector impeller

Abstract

The application relates to the technical field of impeller devices, in particular to a novel welded high-speed dust collector moving vane, which comprises an impeller body, the impeller body is composed of a lower disc piece, an upper disc piece and a plurality of blades, the lower disc piece and the upper disc piece are connected through the blades, the blades are connected with the lower disc piece through welding, one end of the blade away from the lower disc piece is connected with the upper disc piece through welding, the blade annular array is between the lower disc piece and the upper disc piece, the upper disc piece and the lower disc piece are coaxially arranged, the upper disc piece and the lower disc piece are connected through welding, the connecting effect is enhanced, the working loss is reduced, the fatigue strength of the impeller is enhanced, and meanwhile, the service life of the impeller is also enhanced. The application has the effect of improving the efficiency of the impeller in the use process.

Description

Technical Field

[0001] This application relates to the field of impeller motor equipment technology, and in particular to a novel welded high-speed vacuum cleaner impeller. Background Technology

[0002] An impeller is a wheel disk equipped with moving blades. It also refers to the general term for a wheel disk and rotating blades. Impellers are widely used and can also be found in household appliances, such as vacuum cleaners.

[0003] Currently, the upper, middle, and lower plates of the impeller in vacuum cleaner motors are all made of thin aluminum alloy sheets and are assembled by riveting. Due to the yield strength of aluminum alloy and the local stress concentration caused by the riveting holes in the upper and lower plates of the impeller, there is a speed limit for traditional riveted impellers. When the speed exceeds this limit, the upper and lower plates of the impeller will experience fatigue tearing near the riveting holes, which will lead to the failure of the vacuum cleaner motor.

[0004] Traditional riveting methods make it difficult to achieve a perfect fit between the riveting holes on the upper and lower plates of the impeller and the rivet points on the middle plate, resulting in small gaps. When the impeller rotates at high speed, leakage losses will occur, which will reduce the working capacity of the vacuum cleaner motor. Utility Model Content

[0005] In order to improve the efficiency of the impeller of the new high-speed welded vacuum cleaner during use, this application provides a new type of impeller for the high-speed welded vacuum cleaner.

[0006] This application provides a novel welded high-speed vacuum cleaner impeller, employing the following technical solution: A novel welded high-speed vacuum cleaner impeller includes an impeller body composed of a lower disc, an upper disc, and several blades. The lower disc and the upper disc are connected by the blades, which are welded to the lower disc. The blades are arranged in a ring array between the lower disc and the upper disc, and the upper disc and the lower disc are coaxially arranged.

[0007] By adopting the above technical solution, the connection between the blades and the lower disc is changed from riveting to welding in the riveted impeller of the relative transmission. This can reduce the gap between the blades and the lower disc, reduce the power loss of the motor, and enhance the power and performance of the motor.

[0008] In one specific implementation, the end of the blade furthest from the lower disk is connected to the upper disk by welding.

[0009] By adopting the above technical solution, compared with the traditional riveting of the impeller, the upper disc, blades and lower disc of the welded impeller are completely free from the riveting process. The bonding strength of the blades is greatly improved by welding them to the upper and lower discs, and the yield strength of the local structure is also greatly improved. As a result, the upper limit of the impeller speed is also greatly improved, and the vacuum cleaner motor of the same size can have a higher input power. The blades of the welded impeller are connected to the upper and lower discs by multiple welding lines instead of multiple riveting points, which greatly improves the bonding strength. During high-speed rotation, the deformation of the welded impeller will be reduced, thereby avoiding motor failure caused by excessive deformation of the impeller rubbing against the end cover of the casing. The upper and lower plates of the welded impeller are relatively smooth with no exposed riveting points. When the impeller rotates at high speed, it can reduce the mechanical loss between the airflow and the upper and lower plates of the impeller, thereby improving the working efficiency of the impeller. In addition, the upper and lower plates of the welded impeller have no riveting holes and no riveting gaps, which can eliminate the leakage loss generated by traditional riveted impellers during high-speed rotation, thereby improving the working capacity of the vacuum cleaner motor. Welded impellers are not limited by riveting mold processes. In traditional riveted impellers, the middle plate must be perpendicular to the upper and lower plates. However, in welded impellers, the middle plate can form a certain angle with the upper and lower plates. This can effectively eliminate the flow separation phenomenon at the top outlet of the impeller, thereby improving the working efficiency of the impeller and extending its service life.

[0010] In one specific implementation, during welding, the side of the blade closest to the lower disk is welded to the lower disk, and the side of the blade closest to the upper disk is welded to the upper disk.

[0011] By adopting the above technical solution, welding the entire blade surface can seal all gaps between the blade and the upper and lower discs, and the complete welding line can reduce the occurrence of thicker weld layers, thereby enhancing the performance of the impeller.

[0012] In one specific implementation, the blade is welded perpendicular to the lower disk and the blade is welded perpendicular to the upper disk.

[0013] By adopting the above technical solution, vertically welded blades can form a stable flow path for airflow within the channel, which is suitable for scenarios with specific requirements for airflow direction and ensures the stability of airflow output.

[0014] In one specific embodiment, the blade is inclinedly disposed between the lower disk and the upper disk, the blade is inclinedly welded to the lower disk, the blade is inclinedly welded to the upper disk, and the blade forms an angle with the lower disk and the upper disk.

[0015] By adopting the above technical solution, the inclined blades can better guide the airflow direction, reduce the impact loss of airflow on the blade surface, and effectively eliminate the flow separation phenomenon at the top outlet of the impeller, so that the airflow flows more smoothly through the impeller and further improves the working efficiency of the impeller.

[0016] In one specific implementation, the lower plate is provided with a first positioning hole and a second positioning hole, and the side of the blade connected to the lower plate is provided with a first positioning post and a second positioning post, the first positioning post being inserted into the first positioning hole and the second positioning post being inserted into the second positioning hole.

[0017] By adopting the above technical solution, only positioning holes are needed for welding the upper and lower discs of the impeller, eliminating the need for multiple riveting holes. When the impeller rotates at high speed, the failure of the riveting structure due to local stress concentration can be avoided, thus preventing fatigue tearing or brittle fracture of the upper and lower discs of the impeller. At the same time, by inserting the first positioning pin into the first positioning hole and the second positioning pin into the corresponding positioning hole, the blades can be quickly positioned on the lower disc, preventing the blades from rotating on the lower disc and ensuring the positional accuracy of the blades in the annular array. This provides an accurate assembly basis for subsequent laser welding processes and ensures the stability and consistency of the overall impeller structure.

[0018] In one specific implementation, a third positioning hole is provided on the upper plate, and a third positioning post is provided on the side of the blade that is connected to the upper plate, and the third positioning post is inserted into the third positioning hole.

[0019] By adopting the above technical solution, the positioning and matching of the upper disc and the blade can form a double constraint with the positioning structure of the lower disc, ensuring the coaxiality of the upper and lower discs, avoiding impeller imbalance caused by blade tilting, and reducing vibration and noise during high-speed rotation.

[0020] In one specific implementation, the lower plate, the upper plate, and the blade are all made of aluminum alloy sheet.

[0021] By adopting the above technical solutions, aluminum alloy material has the characteristics of high strength and low density, which can reduce the overall weight and reduce drive energy consumption while ensuring the structural strength of the impeller. In addition, aluminum alloy has good weldability and is suitable for the implementation of laser welding process to ensure that the connection of each component is firm.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Laser welding is used instead of riveting, which improves the structural strength and upper speed limit of the impeller, reduces leakage and mechanical losses, and improves the working capacity of the vacuum cleaner motor.

[0023] 2. The matching of positioning holes and positioning pins improves assembly accuracy and structural stability, and reduces vibration and noise during high-speed rotation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the moving impeller of a novel welded high-speed vacuum cleaner according to an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the lower disk in an embodiment of this application.

[0026] Figure 3 This is an exploded view of the impeller in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the blade in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram illustrating the installation relationship between the blades and the lower disk in an embodiment of this application.

[0029] Figure 6 This is a schematic diagram illustrating the installation relationship between the blades and the upper disk in an embodiment of this application.

[0030] Figure 7 This is a comparison chart of the test data relationship between flow rate and vacuum degree for welded impeller and riveted impeller according to embodiments of this application.

[0031] Figure 8 This is a comparison chart of the test data relationship between flow rate and efficiency for welded impellers and riveted impellers according to embodiments of this application. Reference numerals: 1. Impeller body; 11. Lower plate; 111. First positioning hole; 112. Second positioning hole; 12. Blade; 121. First positioning post; 122. Second positioning post; 123. Third positioning post; 13. Upper plate; 131. Third positioning hole. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0033] This application discloses a novel welded high-speed vacuum cleaner impeller, referring to... Figure 1 and Figure 2 The impeller body 1 comprises a lower disc 11, an upper disc 13, and several blades 12. The blades 12 are laser-welded onto the lower disc 11, and the ends of the blades 12 furthest from the lower disc 11 are also laser-welded to the upper disc 13. The blades 12 are arranged in a ring array between the lower disc 11 and the upper disc 13, which are coaxially aligned. The lower disc 11, upper disc 13, and blades 12 are all made of aluminum alloy.

[0034] In this embodiment, when the blade 12 is welded to the lower disk 11 and the upper disk 13, the welding is performed along the outline of the blade 12. During welding, the side of the blade 12 closest to the lower disk 11 is welded to the lower disk 11, and the side of the blade 12 closest to the upper disk 13 is welded to the upper disk 13. There are two connection situations between the blade 12 and the lower disk 11 and the upper disk 13. The first situation is that the blade 12 is in a vertical state, and the blade 12 is perpendicular to both the lower disk 11 and the upper disk 13. The second situation is that the blade 12 is in an inclined state, and the blade 12 is inclined between the lower disk 11 and the upper disk 13 and has an angle with both the lower disk 11 and the upper disk 13.

[0035] Reference Figure 3 and Figure 4 In this embodiment, the lower plate 11 has a first positioning hole 111 and a second positioning hole 112, both of which are rectangular holes. A first positioning post 121 and a second positioning post 122 are integrally formed on the side of the blade 12 connected to the lower plate 11; both are rectangular posts. The upper plate 13 has a third positioning hole 131, which is rectangular. A third positioning post 123 is integrally formed on the side of the third blade 12 connected to the upper plate 13; this third positioning post 123 is also rectangular.

[0036] Before welding the blades 12 onto the lower disk 11 and the upper disk 13, the blades 12 are first assembled onto the lower disk 11, with the first positioning post 121 inserted into the first positioning hole 111 and the second positioning post 122 inserted into the second positioning hole 112. These two positioning points allow for quick positioning of the blades 12 onto the lower disk 11, while also preventing rotation of the blades 12 on the lower disk 11. After all the blades 12 are assembled onto the lower disk 11, the third positioning hole 131 on the upper disk 13 is aligned with the third positioning post 123, and the third positioning post 123 is inserted into the third positioning hole 131 to assemble the upper disk 13 onto the blades 12. The positioning holes and positioning posts pre-assemble and position the lower disk 11, upper disk 13, and blades 12, facilitating subsequent laser welding. In this embodiment, during welding, the positioning posts are also welded to the corresponding upper disk 13 and lower disk 11.

[0037] Reference Figure 5 and Figure 6 The end of blade 12 near the edge of the lower disk 11 is flush with the edge of the lower disk 11, while the end of blade 12 near the edge of the upper disk 13 is at a distance from the edge of the upper disk 13.

[0038] Reference Figure 7 and Figure 8The impeller produced by the welding process of this application and the impeller produced by the riveting process in the prior art are installed on a motor of the same model with a rated power of 400W. Testing is performed on a vacuum cleaner motor performance test bench according to the IEC60312 test standard. In this embodiment, the vacuum cleaner motor performance test bench is purchased equipment and belongs to prior art. This embodiment will not describe the structural composition of the vacuum cleaner motor performance test bench or the testing method of the impeller. Figure 7 and Figure 8 The test data presented yielded the following information: In the comparison curve of vacuum degree and flow rate, under the same vacuum degree conditions, the welded impeller can make the air flow rate sucked in by the vacuum cleaner greater than that sucked in by the riveted impeller. This means that the welded impeller can handle more air per unit time than the riveted impeller, which can improve the cleaning efficiency of the vacuum cleaner.

[0039] In the comparison curve of vacuum degree and flow rate, as the flow rate increases, the vacuum degree corresponding to the welded impeller is always higher than that of the riveted impeller, indicating that during the operation of the vacuum cleaner, the welded impeller can still maintain the vacuum degree better than the riveted impeller.

[0040] In the efficiency versus flow rate curve, the working efficiency of the welded impeller and the riveted impeller increases with flow rate. The working efficiency of the welded impeller is higher than that of the riveted impeller, indicating that the welded impeller can maintain higher working efficiency than the riveted impeller over a wider flow rate range.

[0041] The implementation principle of this application embodiment is as follows: The impeller of this application uses laser welding instead of traditional riveting, which improves the connection strength and structural yield strength of each component, thereby increasing the upper limit of rotational speed; the cooperation between the positioning hole and the positioning post ensures assembly accuracy and reduces performance loss caused by deviation; the dimensional relationship between the blade 12 and the upper disc 13 and lower disc 11 optimizes the airflow path and reduces eddy current and friction loss; the aluminum alloy material balances strength and lightweight. These designs work together to significantly reduce leakage loss and mechanical loss when the impeller rotates at high speed, improve work efficiency, and thus make the vacuum cleaner using this impeller perform better.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel welded high-speed vacuum cleaner impeller, characterized in that: The impeller body (1) is composed of a lower disc (11), an upper disc (13) and several blades (12). The lower disc (11) and the upper disc (13) are connected by the blades (12). The blades (12) are connected to the lower disc (11) by welding. The blades (12) are arranged in a ring array between the lower disc (11) and the upper disc (13). The upper disc (13) and the lower disc (11) are coaxially arranged.

2. The novel welded high-speed vacuum cleaner impeller according to claim 1, characterized in that: The end of the blade (12) away from the lower plate (11) is connected to the upper plate (13) by welding.

3. The novel welded high-speed vacuum cleaner impeller according to claim 2, characterized in that: During welding, the side of the blade (12) closest to the lower plate (11) is welded to the lower plate (11), and the side of the blade (12) closest to the upper plate (13) is welded to the upper plate (13).

4. The novel welded high-speed vacuum cleaner impeller according to claim 2, characterized in that: The blade (12) is welded perpendicular to the lower plate (11), and the blade (12) is welded perpendicular to the upper plate (13).

5. The novel welded high-speed vacuum cleaner impeller according to claim 2, characterized in that: The blade (12) is inclined between the lower plate (11) and the upper plate (13). The blade (12) is welded to the lower plate (11) in an inclined manner and to the upper plate (13) in an inclined manner. The blade (12) forms an angle with the lower plate (11) and the upper plate (13).

6. The novel welded high-speed vacuum cleaner impeller according to claim 1, characterized in that: The lower plate (11) is provided with a first positioning hole (111) and a second positioning hole (112). The blade (12) is provided with a first positioning post (121) and a second positioning post (122) on the side connected to the lower plate (11). The first positioning post (121) is inserted into the first positioning hole (111), and the second positioning post (122) is inserted into the second positioning hole (112).

7. The novel welded high-speed vacuum cleaner impeller according to claim 1, characterized in that: The upper plate (13) is provided with a third positioning hole (131), and a third positioning post (123) is provided on the side where the blade (12) is connected to the upper plate (13). The third positioning post (123) is inserted into the third positioning hole (131).

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