Turbocharger compressor casing with noise reduction structure
By introducing a combination structure of straight pipe, variable diameter pipe and foam metal layer into the turbocharger compressor housing, the noise reduction problem of the turbocharger compressor housing is solved, and better noise control effect is achieved.
Patent Information
- Application Number
- CN202520537953.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing turbocharger compressor housings have poor noise reduction performance, resulting in noise pollution.
It adopts a noise reduction structure with a straight pipe and a variable diameter pipe, with a foam metal layer on the inner wall and a rotatable fan blade installed in the straight pipe. The fan blade is equipped with a sound-absorbing hole. Combined with the tapered structure, it guides the airflow smoothly into the impeller chamber and absorbs noise through the foam metal layer.
It effectively reduces airflow separation and turbulence, lowers the risk of whistling, increases sound energy consumption, and improves the noise reduction performance of the turbocharger compressor housing.
Smart Images
Figure CN223754335U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to turbocharger technical field, concretely relates to a turbocharger compressor casing with noise reduction structure. BACKGROUND
[0002] The turbocharger is actually an air compressor, and the air intake is increased by compressing air. It uses the inertial force of the exhaust gas discharged by the engine to push the turbine in the turbine chamber, and the turbine drives the impeller on the same shaft, the impeller compresses the air sent by the air filter pipe, and the air is pressurized into the cylinder, thereby increasing the output power of the engine.
[0003] When the turbocharger works, a large noise will be generated in the compressor casing of the turbocharger, and a certain noise pollution will be generated.
[0004] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the overall background of the utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL
[0005] In order to overcome the defects existing in the prior art, the utility model provides a turbocharger compressor casing with noise reduction structure to solve the problem of poor noise reduction effect of the existing turbocharger compressor casing.
[0006] In order to achieve the above-mentioned purpose, a turbocharger compressor casing with noise reduction structure is provided, which comprises:
[0007] The compressor casing body has an air inlet;
[0008] The noise reduction structure comprises a straight pipe and a variable diameter pipe, one end of the straight pipe is installed on the air inlet, the variable diameter pipe has opposite first end and second end, the inner diameter size of the variable diameter pipe gradually increases from the first end to the second end, the first end is installed on the other end of the straight pipe, the inner wall of the straight pipe and the variable diameter pipe is paved with a foam metal layer, a fixed shaft is installed in the straight pipe, a plurality of fan blades are rotatably installed on the fixed shaft, the plurality of fan blades are arranged along the circumferential direction of the fixed shaft, and a plurality of sound holes are formed in the fan blades.
[0009] Further, the porosity of the foam metal layer gradually decreases from the inside to the outside of the foam metal layer.
[0010] Further, the porosity of the foam metal layer is 60-80%.
[0011] Further, the inner wall of the impeller chamber of the compressor casing body is paved with a foam metal layer. Further, the inner wall of the impeller chamber of the compressor casing body is paved with a foam metal layer.
[0012] Further, the fixed shaft is rotatably sleeved with a shaft sleeve, and the plurality of vanes are mounted to a circumferential surface of the shaft sleeve.
[0013] The turbine supercharger compressor casing with the noise reduction structure has the advantages that the tapered structure of the reducing pipe and the vanes of the straight-through pipe are matched to guide airflow to smoothly enter the compressor impeller chamber, airflow separation and turbulent flow generation are reduced, sound wave resonance caused by local flow rate mutation is avoided, and thus the howling risk is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings:
[0015] Fig. 1 The figure is a structural schematic view of the turbine supercharger compressor casing with the noise reduction structure.
[0016] Fig. 2 The figure is a sectional view of the turbine supercharger compressor casing with the noise reduction structure.
[0017] Fig. 3 The figure is a sectional view of the straight-through pipe. DETAILED DESCRIPTION
[0018] The application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for convenience of description.
[0019] It should be noted that the embodiments and features in the embodiments in the application can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and embodiments.
[0020] REFERENCE Figs. 1 to 3 As shown in the figure, the utility model provides a turbine supercharger compressor casing with noise reduction structure, which comprises: compressor casing body 1, noise reduction structure 2.
[0021] Among them, the compressor casing body 1 is prior art, and its specific structure is not described here. The compressor casing body 1 has an air inlet.
[0022] The noise reduction structure 2 is used for mounting on the air inlet of the compressor casing body. Specifically, the noise reduction structure 2 comprises a straight pipe 21 and a variable diameter pipe 22.
[0023] One end of the straight pipe 21 is mounted on the air inlet. The straight pipe is coaxially arranged with the air inlet.
[0024] The variable diameter pipe 22 has opposite first and second ends. The inner diameter of the variable diameter pipe 22 gradually increases from the first end to the second end. The first end of the variable diameter pipe 22 is mounted on the other end of the straight pipe 21. The variable diameter pipe is coaxially arranged with the straight pipe.
[0025] The inner wall of the straight pipe 21 and the variable diameter pipe 22 is paved with a foam metal layer 26.
[0026] As a preferred embodiment, the porosity of the foam metal layer 26 gradually decreases from the inside to the outside of the foam metal layer 26.
[0027] The porosity of the foam metal layer 26 is 60-80%.
[0028] The foam metal layer has a layered structure, and the porosity gradient is set from the inside to the outside (such as 80%→60%), so that different frequency noises are attenuated layer by layer. The high frequency noise is absorbed by the small pores, and the low frequency noise is processed by the large pores.
[0029] As a preferred embodiment, referring to Fig. 2 , the inner wall of the impeller chamber of the compressor casing body 1 is paved with a foam metal layer 26.
[0030] Combined with Fig. 2 , Fig. 3 , a fixed shaft 23 is mounted in the straight pipe 21. A plurality of fan blades 24 are rotatably mounted on the fixed shaft 23. The plurality of fan blades 24 are arranged along the circumferential direction of the fixed shaft 23. The fan blades 24 are provided with a plurality of sound holes.
[0031] In this embodiment, the fixed shaft 23 is rotatably sleeved with a shaft sleeve 25. The plurality of fan blades 24 are mounted on the circumferential surface of the shaft sleeve 25.
[0032] The turbocharger compressor casing with the noise reduction structure has the advantages that in the working process, the airflow enters the impeller chamber of the compressor casing body through the variable diameter pipe, the straight-through pipe and the air inlet of the compressor casing body.
[0033] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. It should be understood by those skilled in the art that the scope of the utility model disclosed in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form a technical solution.
Claims
1. A turbocharger compressor housing having a noise reduction structure, characterized by, The application relates to a compressor shell body, a noise reduction structure and a fan blade. The compressor shell body has an air inlet. The noise reduction structure comprises a straight-through pipe and a variable-diameter pipe.
2. The turbocharger having a noise reducing structure according to claim 1, wherein, One end of the straight-through pipe is installed on the air inlet.
3. The turbocharger having a noise reducing structure according to claim 2 wherein, The variable-diameter pipe has opposite first and second ends.
4. The turbocharger having a noise reducing structure according to claim 1, wherein, The inner diameter of the variable-diameter pipe gradually increases from the first end to the second end.
5. The turbocharger having a noise reducing structure according to claim 1, wherein, The first end is installed on the other end of the straight-through pipe. The inner walls of the straight-through pipe and the variable-diameter pipe are paved with a foam metal layer. A fixed shaft is installed in the straight-through pipe. A plurality of fan blades are rotatably installed on the fixed shaft. The plurality of fan blades are arranged along the circumferential direction of the fixed shaft. The fan blades are provided with a plurality of sound holes. The porosity of the foam metal layer gradually decreases from the inner side to the outer side. The porosity of the foam metal layer is 60-80%. The inner wall of the impeller chamber of the compressor shell body is paved with a foam metal layer. The fixed shaft is rotatably sleeved with a shaft sleeve. The plurality of fan blades are installed on the circumferential surface of the shaft sleeve.