An impeller, a centrifugal fan, a fume extraction device, and an integrated stove.
By using an integrated blade ring and wrapping ring design, combined with a folding structure, the problem of cumbersome and costly existing impeller manufacturing processes has been solved, achieving the effect of simplifying the process and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MARSSENGER KITCHENWARE CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, the production process of integrated impeller is complicated, with many parts and high cost, making it difficult to meet the requirements for blade arc length and quantity; the production process of blade impeller is complicated, with many parts and a high probability of incorrect installation, and the cost is also relatively high.
Design an impeller that uses a one-piece molded blade ring and wrapping ring, combined with a folding structure, to simplify the manufacturing process, reduce the number of parts, and increase the blade arc length and number.
This has resulted in a simplified impeller manufacturing process, reduced costs, improved dynamic balance stability, and more reliable performance.
Smart Images
Figure CN224315231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fans, and in particular to an impeller, a centrifugal fan, a fume extraction device, and an integrated stove. Background Technology
[0002] Currently, the most common type of impeller on the market is the blade-type impeller, with a few being one-piece stamped blade impellers. One-piece stamped blade impellers have advantages such as fewer production processes and parts, and stable dynamic balance. However, due to the limitation of the unfolded surface length of the one-piece blade sheath, the arc length and number of blades after forming often cannot meet the requirements of actual applications. While blade-type impellers can meet the requirements for blade arc length and number, production requires individually punching out the corresponding number of blades, inserting the blade pins into corresponding holes in the front and rear plates of the impeller, and then screwing them together using equipment. This process is cumbersome, involves many parts, and there is a possibility of blades being installed incorrectly, resulting in higher costs. Utility Model Content
[0003] Firstly, this utility model provides an impeller that simplifies the production process, reduces production costs, and enables the one-piece blade to achieve the same number of blades and blade arc length as the insert blade.
[0004] To achieve the above objectives, this utility model discloses an impeller comprising an integrally formed blade ring and a shroud ring. The shroud ring is integrally connected to the axial end face of the blade ring. The blade ring comprises a plurality of blades, which are spaced apart. The shroud ring is bent between at least two adjacent blades to form a folded structure.
[0005] Optionally, the shroud includes a transition portion that is parallel to the axial direction of the blade ring and integrally formed at the end of the blade ring, and a folded portion that is integrally formed at the end of the transition portion away from the blade ring and at an angle to the axial direction of the blade ring; the folded portion extends toward the side away from the center of the blade ring.
[0006] Optionally, the folding structure is S-shaped or Z-shaped in a cross-section perpendicular to the axial direction of the blade ring.
[0007] Optionally, the blade ring further includes a reinforcing portion integrally formed between the blade and the envelope, with both sides of the reinforcing portion connected to the blade and the envelope, respectively.
[0008] Optionally, the plane containing the reinforcing portion is perpendicular to the axial direction of the blade ring.
[0009] Optionally, the plurality of blades are evenly distributed along the circumference of the envelope.
[0010] Optionally, the wrapping ring is fixedly connected to both end faces of the blade ring along the axial direction.
[0011] Secondly, this utility model provides a centrifugal fan that can make its performance more reliable.
[0012] To achieve the above objectives, this utility model discloses a centrifugal fan, including an impeller as described in the above technical solution.
[0013] Thirdly, this utility model provides an oil fume extraction device that can reduce overall costs.
[0014] To achieve the above objectives, this utility model discloses an oil fume extraction device, including a centrifugal fan as described in the above technical solution.
[0015] Fourthly, this utility model provides an integrated stove, including the aforementioned fume extraction device.
[0016] Compared with the prior art, the advantages of this utility model are as follows: by using an integrated blade ring and shroud, the balance is more stable and the performance is more reliable. It can also simplify the impeller forming process, reduce the number of parts, and reduce costs. At the same time, by using a folding structure, the integrated blade can achieve the same number of blades and blade arc length as the insert blade. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a partially exploded structure of an impeller disclosed in this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of an impeller blade ring after unfolding, as disclosed in this utility model.
[0019] Figure 3 yes Figure 1 Enlarged view of part A in the image;
[0020] Figure 4 This utility model discloses an impeller, mainly used to demonstrate a partial view of a folding structure;
[0021] Figure 5 yes Figure 2 Enlarged view of part B in the image.
[0022] Explanation of reference numerals in the attached drawings: 1. Blade; 100. Blade ring; 2. Metal plate; 20. Connecting strip; 200. Enclosing ring; 201. Transition section; 202. Folding section; 300. Folding structure; 400. Reinforcing section; 401. Lateral section; 402. Lateral section; 3. Back plate; 4. Bushing. Detailed Implementation
[0023] The present application will be further described in detail below with reference to the accompanying drawings.
[0024] This application discloses an impeller, as shown in the embodiments below. Figure 1 The impeller includes an integrally formed blade ring 100 and a retaining ring 200. The blade ring 100 includes a plurality of blades 1 evenly distributed along the circumference. The retaining ring 200 has two blades, which are integrally formed on one end face of the blade ring 100 along the axial direction.
[0025] Reference Figure 1 and Figure 2 The axial direction of the blade ring 100 is parallel to the central axis of the blade ring 100. The blade ring 100 is formed by rolling and welding a rectangular metal plate 2 around the central axis of the blade ring 100. Before rolling the metal plate 2, multiple spaced blades 1 are punched along its length direction. The portions of the metal plate 2 at both ends of the blades 1 parallel to the central axis of the blade ring 100 form connecting strips 20.
[0026] After the connecting strip 20 is rolled and welded, it forms a wrapping ring 200 through an edge rolling process.
[0027] Reference Figure 1 and Figure 3 The bezel 200 includes a transition portion 201 integrally formed on the end of the blade ring 100 and parallel to its axial direction, and a folded portion 202 integrally formed on the end of the transition portion 201 away from the blade ring 100 and at an angle to its axial direction; the folded portion 202 extends toward the side opposite to the center of the blade ring 100. In this embodiment, the folded portion 202 and the transition portion 201 are approximately at 90°.
[0028] The blade ring 100 and the shroud 200 are integrally stamped and formed. The folded part 202 forms a flange, which strengthens the hardness of the shroud 200, eliminates the need for the front cover plate of the traditional impeller, further reduces costs, improves dynamic balance, and enhances stability.
[0029] Reference Figure 4 The 200 ring has a folding structure 300 between two adjacent blades 1. The folding structure 300 is formed by bending the connecting strip 20 area of the stamped metal plate 2, which is used to extend the effective arc length of the blade 1, thereby increasing the number of blades 1 and the arc length of the blade 1.
[0030] It should be noted that the number of folding structures, the number of folds, and the length of a single fold can all be adjusted as needed. For example, a total of 50 blades can be set with 25 folding structures spaced at intervals, and each folding structure can be folded twice, as long as it meets the needs of production and manufacturing.
[0031] The folded structure 300 has an S-shaped or Z-shaped cross section perpendicular to the axial direction of the blade ring 100, and forms a multi-layered reinforced structure through two folds.
[0032] Reference Figure 2 and Figure 5 The blade ring 100 also includes a reinforcing portion 400 integrally formed between the two ends of the blade 1 and the envelope 200. The plane of the reinforcing portion 400 is perpendicular to the axial direction of the blade ring 100. In some embodiments, in order to improve the reliability of the connection between the reinforcing portion 400 and the blade 1, the reinforcing portion 400 has three sides connected end to end. The reinforcing portion 400 is connected to a transverse portion 401 extending along the axial direction of the blade ring 100 between one of its sides and the connecting strip 20. The reinforcing portion 400 is connected to a lateral portion 402 between one of its other two sides and the end portion of the blade 1. The lateral portion 402 is similar in shape to the blade 1 and protrudes from the side of the reinforcing portion 400 facing the blade 1.
[0033] The impeller also includes a rear plate 3 and a bushing 4, with the rear plate 3 and bushing 4 riveted or welded to one of the retaining rings 200.
[0034] This application also discloses a centrifugal fan, including an impeller as described in the above technical solution.
[0035] This application also discloses an oil fume extraction device, including a centrifugal fan described in the above technical solution.
[0036] This application also discloses an integrated stove, including the fume extraction device described in the above technical solution.
[0037] 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. An impeller, characterized by, It includes an integrally formed blade ring (100) and a wrapping ring (200), the wrapping ring (200) being integrally connected to the axial end face of the blade ring (100), the blade ring (100) including a plurality of blades (1), each blade (1) being spaced apart, the wrapping ring (200) being bent between at least two adjacent blades (1) to form a folded structure (300).
2. A vane according to claim 1, wherein The ring (200) includes a transition portion (201) that is parallel to the axial direction of the blade ring (100) and integrally formed at the end of the blade ring (100), and a folded portion (202) that is integrally formed at the end of the transition portion (201) away from the blade ring (100) and at an angle to the axial direction of the blade ring (100); the folded portion (202) extends toward the side away from the center of the blade ring (100).
3. A vane according to claim 1, wherein The folded structure (300) is S-shaped or Z-shaped in cross-section perpendicular to the axial direction of the blade ring (100).
4. A vane according to claim 1, wherein The blade ring (100) also includes a reinforcing portion (400) integrally formed between the blade (1) and the shroud (200), with the two sides of the reinforcing portion (400) connected to the blade (1) and the shroud (200) respectively.
5. A vane according to claim 4, wherein The plane containing the reinforcing portion (400) is perpendicular to the axial direction of the blade ring (100).
6. An impeller according to claim 1, characterized in that, The plurality of blades (1) are evenly distributed along the circumference of the envelope (200).
7. An impeller according to claim 1, characterized in that, The wrapping ring (200) is fixedly connected to both end faces of the blade ring (100) along the axial direction.
8. A centrifugal fan, characterized in that, The impeller includes any one of claims 1-7.
9. A fume extraction device, characterized in that, Including the centrifugal fan described in claim 8 above.
10. An integrated stove, characterized in that, The present invention includes the fume extraction device described in claim 9.