一种涡轮增压器用隔热罩
The turbocharger heat shield, improved through multi-layer structure and materials, overcomes the shortcomings of existing heat shields in terms of high-temperature resistance and heat insulation efficiency, achieving more efficient heat blocking and structural stability, and improving the overall performance and service life of the turbocharger.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI XINLANGTU MACHINERY MANUFACTURING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing turbocharger heat shields are insufficient to meet the high-performance requirements of engines in terms of high-temperature resistance and heat insulation efficiency. They cannot effectively reduce the transfer of high temperatures from the turbocharger end to the bearing housing through heat radiation and heat conduction, thus affecting overall performance and lifespan.
The turbocharger heat shield adopts a multi-layer structure, which consists of a high-temperature resistant heat-insulating ceramic layer, a metal support layer, and an outer metal protective layer nested from the inside out. The layers are connected by hooks and rivets. The high-temperature resistant heat-insulating ceramic layer forms a uniform porous structure inside. It is prepared using a sol-gel process, and nano-alumina and nano-zirconia are added to the material to improve its heat insulation performance.
Significantly reduces heat conduction and radiation, improves turbocharger efficiency and stability, extends engine life, reduces thermal impact on surrounding components, and lowers overall costs.
Smart Images
Figure CN224515262U_ABST
Abstract
Claims
1. An insulating shroud for a turbocharger, characterized by: It includes a high-temperature resistant heat-insulating ceramic layer (1), a metal support layer (2) and an outer metal protective layer (3) nested from the inside out. The high-temperature resistant heat-insulating ceramic layer (1), the metal support layer (2) and the outer metal protective layer (3) are connected by no less than three hooks (4), which are arranged in a ring array. Rivets (5) are arranged in a ring array around the no less than three hooks (4). The rivets (5) are staggered with the hooks (4) and connect the high-temperature resistant heat-insulating ceramic layer (1), the metal support layer (2) and the outer metal protective layer (3). The radius of the outer metal protective layer (3) is smaller than the radius of the metal support layer (2) and larger than the radius of the high-temperature resistant heat-insulating ceramic layer (1). The high-temperature resistant heat-insulating ceramic layer (1) has at least one layer.
2. The turbocharger shroud of claim 1, wherein: The high-temperature resistant heat-insulating ceramic layer (1) has a uniform porous structure with a porosity of 15~30%. It is prepared by sol-gel process and the thickness of the high-temperature resistant heat-insulating ceramic layer (1) is 0.2~0.5mm.
3. The turbocharger shroud of claim 1 wherein: The metal support layer (2) is made of stainless steel with a thickness of 0.8~0.9mm; the outer metal protective layer (3) is made of high-temperature alloy with a thickness of 0.2~0.5mm.
4. The turbocharger shroud of claim 2 or 3, wherein: The number of hooks (4) is 3 to 8, with no fewer than three, and they are evenly distributed circumferentially.
5. The turbocharger shroud of claim 4 wherein: The number of hooks (4) is 4.
6. The turbocharger shroud of claim 1 wherein: The hook (4) includes an integrally formed fixed end (41) and no less than two snap-in ends (42). The snap-in ends (42) are provided with a protrusion (43) and a chamfer (44), and the chamfer (44) is located at the end of the snap-in end (42).