Turbocharger volute structure
By setting a welded base and welded nut on the turbocharger volute housing, and using a hollow structure and resistance welding, the problems of casting defects and high costs of the volute housing are solved, achieving material savings and improved connection stability.
Patent Information
- Application Number
- CN202520656465.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-04-09
AI Technical Summary
Existing turbocharger volute housings are prone to casting defects during the casting of threaded matrix structures, resulting in high costs. Furthermore, the existing structure makes it difficult to reduce the weight and cost of raw materials.
A welded base is set on the volute body, and a nut is welded on it. The welded base and countersunk hole design with a hollow structure are used and connected by resistance welding, which eliminates the need for casting risers or feeding channels and reduces costs.
By using a welded base and countersunk hole design, casting defects are avoided, raw materials are saved, costs are reduced, and connection stability is improved.
Smart Images
Figure CN223739486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turbocharger technology, specifically to a turbocharger vortex housing structure. Background Technology
[0002] The turbocharger turbine housing needs to be connected to the heat shield via threads. Currently, the turbocharger turbine housing thread mounting point is cast integrally with the turbine housing. After casting, the material matrix is machined by drilling and then tapping internal threads. Because the threaded hole is relatively large, the cast body is also relatively large, and because the mounting point is far from the turbine housing, the cast body is also relatively long. As the industry continues to produce thinner turbine housings while the threaded hole size remains constant, the thickness of the cast material in the area where the threaded hole is located becomes increasingly thick and large relative to the surrounding turbine housing material. This thick and long cast body becomes the boundary between thick and thin castings when the turbine housing as a whole is made thinner, highlighting casting defects. In the casting process, this isolated, thick area of the threaded matrix structure is a structural region highly prone to casting defects such as shrinkage porosity, and these defects are difficult to avoid or improve due to the existing threaded matrix structure. To solve these casting defects, casting risers or feeding channels must be used, at the cost of high costs.
[0003] With the rising prices of industrial raw materials, the cost of volute housings made of stainless steel with high nickel and high chromium content is also increasing. Therefore, it is imperative to optimize the structural design to reduce weight and cost. However, the inherent structure of the existing threaded mounting points makes it impossible to promote weight reduction and cost reduction of raw materials in this area. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a turbocharger volute structure to solve the technical problems of easy casting defects and high cost in the casting of turbocharger volute structures with threaded base structures.
[0005] To solve the above-mentioned technical problems, this utility model provides a turbocharger volute structure, including a volute body, and a plurality of welded bases are provided on the outer side wall of the volute body, and a welded nut is welded to the upper end face of each welded base.
[0006] With the above structure, the turbocharger volute structure of this utility model has the following advantages: by setting a welding base on the volute body and welding the welding nut to the upper end face of the welding base, the height of the welding base can be shortened, thereby saving raw materials in this area and avoiding casting defects. It also eliminates the need for additional structures such as casting risers or feeding channels to eliminate defects, thus achieving cost reduction.
[0007] As an improvement, each welding base has a countersunk hole on its upper surface; this structure makes the welding base hollow, which can further save raw materials to reduce costs, and the countersunk hole can also avoid the bolts being installed.
[0008] As an improvement, countersunk holes are machined or cast.
[0009] As an improvement, each weld nut is provided with a limiting part at the bottom, which is inserted into the countersunk hole; with this structure, the limiting part and the countersunk hole can be used to position the weld nut.
[0010] As an improvement, the countersunk hole has a circular cross-section, and the limiting part has an annular cross-section; this structure facilitates the connection between the limiting part and the countersunk hole.
[0011] As an improvement, the welding nut is coaxially arranged with the upper end face of the welding base, and the limiting part is coaxially arranged with the welding nut; this structure improves the stability of the connection between the welding nut and the welding base.
[0012] As an improvement, the area of the upper surface of the welding base is larger than the area of the bottom surface of the welding nut; this structure facilitates the welding of the welding base and the welding nut.
[0013] As an improvement, the welding nut and welding base are welded together by resistance welding; this structure has the advantage of low cost. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a cross-sectional view of the present invention.
[0016] Figure 3 This is a three-dimensional structural diagram of the vortex shell body part in this utility model.
[0017] Figure 4 This is a three-dimensional structural diagram of the welding nut in this utility model.
[0018] Reference numerals in the attached drawings: 1. Volute body; 2. Welded base; 3. Welded nut; 4. Countersunk hole; 5. Limiting part. Detailed Implementation
[0019] The present invention provides a detailed description of a turbocharger vortex housing structure in conjunction with the accompanying drawings.
[0020] like Figures 1 to 4As shown, a turbocharger volute structure includes a volute body 1, with several welding bases 2 on the outer side wall of the volute body 1. Each welding base 2 has a welding nut 3 welded to its upper end face. The welding nut 3 and the welding base 2 are welded together by resistance welding to reduce welding costs.
[0021] like Figure 1 As shown, the area of the upper end face of the welding base 2 is larger than the area of the bottom end of the welding nut 3, so as to facilitate welding the welding nut 3 to the welding base 2. That is to say, when the welding nut 3 is connected to the welding base 2, the bottom end of the welding nut 3 is located inside the welding base 2, and there is still a margin on the upper end face of the welding base 2 to ensure welding. The upper end face of the welding base 2 can be cast together with the welding base 2 and the vortex body 1, or it can be machined after casting.
[0022] Among them, the welding nut 3 can be a national standard nut or a customized non-standard nut.
[0023] like Figure 2 and Figure 3 As shown, each welding base 2 has a countersunk hole 4 on its upper surface and a limiting part 5 at its bottom. The limiting part 5 is inserted into the countersunk hole 4. The countersunk hole 4 has a circular cross-section and the limiting part 5 has an annular cross-section. The welding nut 3 is coaxially arranged with the upper surface of the welding base 2 and the limiting part 5 is coaxially arranged with the welding nut 3. The countersunk hole 4 is naturally also coaxially arranged with the welding base 2.
[0024] The countersunk hole 4 is machined or cast. The countersunk hole 4 makes the welding base 2 form a hollow structure. For the countersunk hole 4 formed by direct casting, it further saves raw materials to achieve the purpose of cost reduction. In addition, the countersunk hole 4 can avoid the bolts to be installed. The limiting part 5 and the countersunk hole 4 play a positioning role for the welding nut 3.
[0025] This utility model shortens the height of the welding base 2 by setting a welding base 2 on the vortex body 1 and welding the welding nut 3 to the upper end face of the welding base 2, thereby saving raw materials in this area and avoiding casting defects. It also eliminates the need for additional structures such as casting risers or feeding channels to eliminate defects, thus achieving cost reduction.
[0026] It should be noted that the lower the height of the welding base 2, the more beneficial it is for casting and cost reduction. However, the height of the welding base 2 must at least meet the requirements for avoiding the installation bolts, the positioning of the upper limit part 5 of the welding nut 3, and the connection with the positive / negative poles during the welding process. On the basis of meeting the above requirements, the height of the welding base 2 should be as low as possible.
[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
Claims
1. A turbocharger volute structure, characterized by, Including volute body (1), the outer side wall of volute body (1) is equipped with several welding base (2), each welding base (2) upper end face is welded with welding nut (3).
2. The turbocharger volute structure of claim 1, wherein, Each welding base (2) upper end face is equipped with counterbore (4).
3. The turbocharger volute structure of claim 2, wherein, The counterbore (4) is by machining or casting.
4. The turbocharger volute structure of claim 2, wherein, Each welding nut (3) bottom end is equipped with limiting portion (5), the limiting portion (5) is inserted in the counterbore (4).
5. The turbocharger volute structure of claim 4, wherein, The counterbore (4) section is circular, and the limiting portion (5) section is circular ring shape.
6. The turbocharger volute structure of claim 4, wherein, The welding nut (3) is coaxially arranged with the upper end surface of the welding base (2), and the limiting portion (5) is coaxially arranged with the welding nut (3).
7. The turbocharger volute structure of claim 1, wherein, The upper end surface area of the welding base (2) is greater than the bottom end area of the welding nut (3).
8. The turbocharger volute structure of claim 1, wherein, The welding nut (3) and the welding base (2) are welded by resistance welding.