Special-shaped turbocharger pressing shell
By employing high-pressure casting technology and plug sealing structure for irregularly shaped turbocharger housings, the high production cost and assembly difficulties of turbocharger housings have been solved, achieving efficient and low-cost single-piece production and smooth airflow, thus meeting boundary and assembly requirements.
Patent Information
- Application Number
- CN202520403719.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing turbocharger housing production costs are high, efficiency is low, and it is difficult to meet boundary and assembly requirements. In particular, the curved and long irregular outlet design cannot be produced using high pressure casting. A two-piece structure is required, which increases the cost of molds and bolt connections and makes it difficult to meet boundary requirements.
Design a non-standard turbocharger housing. Employ high-pressure casting technology to achieve single-piece production through through-hole and plug structures. Utilize the through-hole as a core-pulling port and combine it with the plug for sealing. This avoids sand casting, simplifies assembly, improves production efficiency, and reduces costs.
By using high-pressure casting to produce turbocharger housings, production costs are reduced, production efficiency is improved, airflow losses are reduced, boundary and assembly requirements are met, and a more compact design is achieved.
Smart Images
Figure CN223894524U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turbocharger technology, specifically to a non-standard turbocharger housing. Background Technology
[0002] In order to make engine development more compact and require a more compact engine layout, turbocharger manufacturers have made it impossible for many turbocharger housings to use the original straight outlet due to insufficient space inside the engine. Instead, they have to use curved outlets to meet boundary and assembly requirements.
[0003] Currently, most elbow-shaped pressure shells can only be produced using sand casting. However, sand casting is inefficient and has high machining allowances and costs, which is not conducive to achieving weight reduction and cost reduction goals. If high-pressure casting is used, the process requires core removal from the product. For irregularly shaped outlets (some designs are not only curved but also have long outlets), a one-piece pressure shell cannot achieve core removal. Therefore, it can only be designed as a two-piece pressure shell, that is, the outlet section is cut into two pieces and connected by bolts. This two-piece pressure shell requires an additional mold for the connecting section, and the outlet section needs to be connected by flanges and bolts. Considering the machining costs of gaskets and mounting surfaces, the overall manufacturing and installation costs are high, and the additional flange structure is difficult to meet boundary and assembly requirements. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an irregularly shaped turbocharger housing to solve the technical problems of high production cost, low efficiency and difficulty in meeting boundary and assembly requirements of the existing turbocharger housing.
[0005] To solve the above-mentioned technical problems, this utility model provides an irregularly shaped turbocharger housing, including a housing body. The housing body includes an inlet section, a flow channel section located at the lower end of the inlet section, a first outlet section located at one end of the flow channel section, and a second outlet section located at one end of the first outlet section. The second outlet section is obliquely upward. The inlet section, the flow channel section, the first outlet section, and the second outlet section are all provided with channels that are sequentially interconnected. The side wall of the second outlet section is provided with a through hole, the position of which corresponds to the end of the internal channel of the first outlet section. A plug is connected in the through hole.
[0006] With the above structure, the irregular-shaped turbocharger housing of this utility model has the following advantages: Since the position of the through hole corresponds to the end of the internal channel of the first outlet section, the through hole can be used as a core-pulling port at the first outlet section, and the outlet itself at the end of the second outlet section can be used as another core-pulling port. Therefore, the turbocharger housing of this utility model can be produced by high-pressure casting process. First, the core is pulled and demolded from the second outlet section, then the core is pulled and demolded from the first outlet section through the through hole, and finally the upper and lower demolding is performed. There is no need to use sand casting process, which improves production efficiency and reduces production cost. Moreover, after the housing is produced, only the through hole needs to be sealed with a plug, without the need for additional assembly parts, which also reduces costs and can meet boundary and assembly requirements.
[0007] As an improvement, the plug is tilted; this structure makes the airflow from the channel in the first outlet section to the channel in the second outlet section smoother, reduces airflow loss, and improves the performance of the pressure shell.
[0008] As an improvement, the intersection point between the bottom of the first outlet section and the plug is located on the inclined surface of the inner end of the plug. With this structure, the position of the intersection point between the bottom of the first outlet section and the plug will affect the airflow. Setting it on the inclined surface of the inner end of the plug makes the airflow smoother, reduces airflow loss, and improves the performance of the pressure shell.
[0009] As an improvement, the cross-sectional area of the internal channel of the second outlet section is larger than that of the internal channel of the first outlet section. With this structure, there is gas energy loss when the airflow flows from the channel in the first outlet section to the channel in the second outlet section. Making the cross-sectional area of the internal channel of the second outlet section larger than that of the internal channel of the first outlet section can reduce gas energy loss, thereby improving the pressure shell performance.
[0010] As an improvement, the cross-sectional area of the internal channel of the first outlet section is greater than or equal to 85% of the cross-sectional area of the internal channel of the second outlet section; this structure further reduces gas energy loss, thereby improving the performance of the pressure shell.
[0011] As an improvement, the cross-sectional area of the internal channel of the first outlet section gradually increases towards the end; this structure further reduces gas energy loss, thereby improving the performance of the pressure shell.
[0012] As an improvement, the plug is interference-fitted with the through hole; this structure improves the sealing performance of the plug at the through hole.
[0013] As an improvement, the plug is a plug head or a cup-shaped plug. Attached Figure Description
[0014] Figure 1 This is a cross-sectional view of the present invention.
[0015] Figure 2 This is a cross-sectional view of the pressure shell body in this utility model.
[0016] Figure 3 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 4 This is a three-dimensional structural schematic diagram of the present invention from another perspective.
[0018] Figure 5 This is a three-dimensional structural diagram of the plug component in this utility model.
[0019] Reference numerals: 100, pressure shell body; 1, inlet section; 2, flow channel section; 3, first outlet section; 4, second outlet section; 5, through hole; 6, plug. Detailed Implementation
[0020] The following is a detailed description of a non-standard turbocharger housing according to the present invention, with reference to the accompanying drawings.
[0021] like Figures 1 to 5 As shown, a shaped turbocharger housing includes a housing body 100. The housing body 100 includes an inlet section 1, a flow channel section 2 located at the lower end of the inlet section 1, a first outlet section 3 located at one end of the flow channel section 2, and a second outlet section 4 located at one end of the first outlet section 3. The second outlet section 4 is obliquely upward. The inlet section 1, the flow channel section 2, the first outlet section 3, and the second outlet section 4 all have sequentially interconnected channels. Specifically, as shown... Figure 1 As shown, flow channel section 2 is located at the lower end of inlet section 1, while the left end of the first outlet section 3 is located at the right end of flow channel section 2, and the second outlet section 4 is located at the right end of the first outlet section 3, and they are inclined from left to right and upward to the right. The principle of airflow through the casing is as follows: First, air enters through the engine pipeline through the upper opening of inlet section 1, and is transported through the internal channel of flow channel section 2 to the internal channel of the first outlet section 3. The airflow direction is as follows... Figure 1 Arrow A in the diagram indicates that the airflow finally exits into the pipeline through the upper opening of the second outlet section 4, with the airflow direction as shown. Figure 1 Arrow B in the diagram. The distribution, specific structure, and principles of the various sections of the pressure shell body 100 are existing technologies and will not be elaborated upon here.
[0022] like Figure 1 and Figure 2As shown, a through hole 5 is provided on the side wall of the second outlet section 4. The position of the through hole 5 corresponds to the end of the internal channel of the first outlet section 3. The term "end" refers to the direction of airflow. The through hole 5 can be used for core pulling in high-pressure casting. Since the position of the through hole 5 corresponds to the end of the internal channel of the first outlet section 3, the through hole 5 can serve as one core pulling port at the first outlet section 3, and the outlet itself at the end of the second outlet section 4 can serve as another core pulling port. Therefore, the turbocharger housing of this utility model can be produced by high-pressure casting. First, the core is pulled and demolded from the second outlet section 4, then the core is pulled and demolded from the first outlet section 3 through the through hole 5, and finally the upper and lower parts are demolded. Sand casting is not required, which improves production efficiency and reduces production costs.
[0023] like Figure 1 As shown, a plug 6 is connected inside the through hole 5. The plug 6 is interference-fitted with the through hole 5 to seal and prevent air leakage. After the pressure shell body 100 is produced by high pressure casting, the through hole 5 only needs to be sealed with the plug 6. No additional assembly parts are required, which also reduces costs and meets the boundary and assembly requirements.
[0024] In this embodiment, the plug 6 is a plug or a cup-shaped plug. Of course, in some other embodiments, the plug 6 can also be other sealing elements that can be used to seal the through hole 5 and play a sealing role.
[0025] When the airflow flows from the channel in the first outlet section 3 to the channel in the second outlet section 4, there is gas energy loss. The greater the gas energy loss, the worse the performance of the pressure shell will be. Therefore, in order to improve the performance of the pressure shell, it is necessary to minimize the gas energy loss as much as possible.
[0026] like Figure 1 As shown, the plug 6 is inclined and roughly parallel to the side wall of the second outlet section 4. That is, the second outlet section 4 is inclined upwards from left to right, and the plug 6 is also inclined upwards from left to right. There is also a certain angle between the plug 6 and the second outlet section 4. The intersection point between the bottom of the first outlet section 3 and the plug 6 is located on the inclined surface of the inner end of the plug 6. Figure 1 Point P, the intersection of the bottom of the first outlet section 3 and the plug 6, affects the airflow. Setting it on the inclined surface of the inner end of the plug 6 makes the airflow smoother, reduces airflow loss, and improves the performance of the pressure shell. The inner end of the plug 6 refers to the end face of the plug 6 located inside the pressure shell body 100.
[0027] To improve the performance of the pressure shell, furthermore, the cross-sectional area of the internal channel of the second outlet section 4 is larger than the cross-sectional area of the internal channel of the first outlet section 3, preferably the cross-sectional area of the internal channel of the first outlet section 3 is greater than or equal to 85% of the cross-sectional area of the internal channel of the second outlet section 4. In addition, the cross-sectional area of the internal channel of the first outlet section 3 gradually increases towards the end, such as... Figure 1 and Figure 2 As shown, the lower wall of the first outlet section 3 slopes downwards from left to right, thereby gradually increasing the cross-sectional area of the internal channel of the first outlet section 3. Gas flows through the internal channels of the first outlet section 3 and the second outlet section 4, with the cross-sectional area increasing over time. Furthermore, the cross-sectional area of the internal channel of the first outlet section 3 should be as large as possible. The connecting section between the internal channels of the first outlet section 3 and the second outlet section 4 requires machining to remove some of the raw material, facilitating a smooth gas transition.
[0028] This invention enables high-pressure casting of irregularly shaped (especially those with an outlet slope greater than 45 degrees, or curved and long outlets) outlet shells, achieving cost reduction. Compared with the traditional two-piece design, it can reduce an additional mold and sub-parts, reduce costs, make installation more convenient, and make the space more compact, achieving the best performance target.
[0029] 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 uniquely shaped turbocharger housing, characterized in that, The pressure shell body (100) includes an inlet section (1), a flow channel section (2) located at the lower end of the inlet section (1), a first outlet section (3) located at one end of the flow channel section (2), and a second outlet section (4) located at one end of the first outlet section (3). The second outlet section (4) is obliquely upward. The inlet section (1), the flow channel section (2), the first outlet section (3), and the second outlet section (4) are all provided with channels that are connected to each other in sequence. The side wall of the second outlet section (4) is provided with a through hole (5). The position of the through hole (5) corresponds to the end of the internal channel of the first outlet section (3). A plug (6) is connected in the through hole (5).
2. The irregularly shaped turbocharger housing according to claim 1, characterized in that, The plug (6) is set at an angle.
3. The irregularly shaped turbocharger housing according to claim 2, characterized in that, The intersection point between the bottom of the first outlet section (3) and the plug (6) is located on the inclined surface of the inner end of the plug (6).
4. The irregularly shaped turbocharger housing according to claim 1, characterized in that, The cross-sectional area of the internal channel of the second exit section (4) is greater than the cross-sectional area of the internal channel of the first exit section (3).
5. The irregularly shaped turbocharger housing according to claim 4, characterized in that, The cross-sectional area of the internal channel of the first exit section (3) is greater than or equal to 85% of the cross-sectional area of the internal channel of the second exit section (4).
6. The irregularly shaped turbocharger housing according to claim 4 or 5, characterized in that, The cross-sectional area of the internal passage of the first exit section (3) gradually increases towards the end.
7. The irregularly shaped turbocharger housing according to claim 1, characterized in that, The plug (6) is interference-fitted with the through hole (5).
8. The irregularly shaped turbocharger housing according to claim 1, characterized in that, The plug (6) is a plug or a cup-shaped plug.