A turbocharger with noise reduction

Abstract

The utility model discloses a kind of noise reduction turbocharger, including worm gear machine main body, rectifier ring group, bearing seat component and flange ring body. Rectifier ring group is set at the exhaust port of worm gear machine main body, including flexible connecting ring, spiral arrangement's rectifier blade, flow guide cone and rectification tooth, can be guided to the exhaust airflow and weaken vortex noise;The connecting ring is flexible structure, for realizing the flexible connection between worm gear machine main body and exhaust component. Bearing seat component includes fixed seat, fixed ring body and elastic floating lug rod, floating lug rod is connected flange ring body obliquely, for flexible support worm gear machine main body, absorbs vibration impact. The structure realizes high-efficiency noise reduction and structure buffer, improves the operating stability and service life of turbocharging system.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, specifically a noise-reducing turbocharger. Background Technology

[0002] As a key component of engine supercharging systems, turbochargers are widely used in automobiles, construction machinery, and power generation equipment. They recover exhaust energy from the engine to drive a compressor turbine, thereby pressurizing the intake air and improving engine combustion efficiency. However, existing turbocharger devices often face technical challenges such as strong exhaust turbulence, high aerodynamic noise, and severe structural vibration at high speeds, which seriously affect the overall operational stability and acoustic performance of the system.

[0003] In existing technologies, common exhaust-end rectification structures often employ rigid guide vanes fixedly installed inside the exhaust channel. While these can guide airflow direction to some extent, they are ineffective at absorbing vibrations and shocks from exhaust fluctuations, and lack flexible buffering capabilities. Furthermore, fatigue cracks or sealing failures are prone to occur at the connection points during long-term operation. Additionally, exhaust disturbances easily create vortices and boundary layer shedding at the tail end, leading to turbulent flow and generating high-frequency noise, especially noticeable at high speeds. Although some structures attempt to reduce noise through guide cones or flow channels, the overall noise reduction effect is limited, and excessive structural rigidity can actually increase system coupling stress.

[0004] On the other hand, to improve the connection stability between the main unit and the external support structure, traditional turbochargers often use metal flanges or rigid supports to connect to the platform. However, under high-speed engine operation and frequent start-stop conditions, this type of rigid connection cannot effectively eliminate system vibration, which can easily lead to wear, loosening or even detachment of the connecting parts, shortening the service life of the overall device and posing structural fatigue and safety hazards.

[0005] In summary, existing turbochargers still face significant technical bottlenecks in exhaust flow rectification and noise reduction, as well as structural flexibility support. There is an urgent need for a structural design with flexible connections and efficient noise reduction capabilities to effectively improve exhaust flow stability, reduce aerodynamic noise, and enhance system vibration resistance and reliability. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a noise reduction turbocharger, including a worm gear body, a rectifier ring assembly, a bearing assembly and a flange ring body. The exhaust flow field is optimized by the rectifier blades, guide cones and turbulence tooth structure. At the same time, the connection buffer is achieved by using a floating lug type flexible connection to ensure structural vibration suppression and component durability.

[0008] In a preferred embodiment, the exhaust port of the worm gear machine body is further configured such that a rectifier ring assembly is connected to it. The rectifier ring assembly includes a connecting ring and several rectifier blades. A guide cone is connected to the tail end of each rectifier blade, and rectifier teeth on the leeward side are provided on one side of each rectifier blade. The rectifier blades are evenly distributed in a circumferential direction, and a flexible connection is formed between the connecting ring and the worm gear machine body.

[0009] The specific technical effects are as follows: the structure can guide and rectify the high-speed airflow discharged from the worm gear, stabilize the airflow path through the guide cone, disperse vortex noise through the rectification teeth, effectively reduce exhaust noise, and reduce vibration transmission through the flexible connection structure to avoid structural resonance damage.

[0010] In the aforementioned rectifier ring assembly, the connecting ring is a flexible collar structure made of high-temperature resistant elastic rubber.

[0011] The specific technical effects are as follows: the flexible collar can absorb the mechanical stress and thermal expansion and contraction displacement caused by exhaust pulsation, improve the reliability and stability of the rectifier ring assembly, and extend the service life of the system.

[0012] In a preferred embodiment, the windward surface of the guide cone is configured as a conical structure and is arranged coaxially with the connecting ring; the rectifier blades are arranged in a spiral oblique direction.

[0013] The specific technical effects are as follows: the conical guide structure combined with the spiral guide blades can further improve the rectification efficiency, stabilize the central airflow, reduce boundary layer shedding, and improve the stability and transmission efficiency of the downstream fluid.

[0014] In a preferred embodiment, the rectifier teeth are further configured such that the tooth thickness gradually decreases along the airflow direction.

[0015] The specific technical effects are as follows: the sawtooth design can effectively suppress the vortex wake and noise source in high-speed exhaust, thereby achieving a significant aerodynamic noise reduction effect and optimizing the acoustic performance of the turbocharger.

[0016] In a preferred embodiment, the worm gear machine body is further configured such that: a flange ring is provided on the outside of the body, and a bearing assembly is provided. The bearing assembly includes a fixed seat and two fixed rings, and multiple floating lugs arranged in opposite directions are provided on the inner side of the two fixed rings respectively.

[0017] The specific technical effect is as follows: the flexible connection between the two fixed rings is achieved through the float rod, which can absorb vibration and impact during the operation of the booster and prevent fatigue damage or loosening of the connection parts.

[0018] In a preferred embodiment, the two fixed rings are arranged parallel to each other and fit together, and the float rod is arranged obliquely with one end connected to the flange ring.

[0019] The specific technical effects are as follows: the structure enhances the coupling stability between the flange and the bearing seat, and the oblique floating lug setting enables the connection to have multi-directional buffering capability, improving the resistance to dynamic loads.

[0020] In a preferred embodiment, the fixed ring is further configured to be made of high-strength aluminum alloy, and the float rod is made of elastic steel.

[0021] The specific technical effects are as follows: the high-strength aluminum alloy fixed ring body ensures the load-bearing strength, and the elastic steel floating lug achieves elastic deformation and vibration absorption, thereby improving the overall structural stability and service life, and making it suitable for long-term operation in high-temperature and high-vibration environments.

[0022] In summary, this utility model effectively improves the rectification and noise reduction performance of the turbocharger by using the flexible connection structure of the rectifier ring assembly in conjunction with the aerodynamic rectification components; and achieves a comprehensive improvement in structural reliability by using the flexible support structure of the bearing assembly to buffer vibration and impact, making it suitable for various high-performance internal combustion engine turbocharging systems.

[0023] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, by setting a flexible rectifier ring assembly at the exhaust port of the worm gear engine body, not only is a flexible connection between the worm gear engine body and the external exhaust component realized, improving connection stability and assembly adaptability, but also the combined structure of rectifier blades, guide cones and sawtooth rectifier teeth effectively weakens exhaust vortices and boundary layer disturbances, reduces the aerodynamic noise generated by the turbocharger at high exhaust flow rates, and significantly improves the acoustic performance of the whole machine during operation.

[0024] 2. In this utility model, by setting a bearing assembly including a fixed ring and a float rod, flexible support for the worm gear machine body is achieved. The float rod is made of elastic steel, which can absorb structural vibration and buffer impact load during the operation of the device, effectively preventing loosening and fatigue between the flange ring and external components caused by vibration, thereby improving the overall stability, durability and service life of the device, and has good engineering practicality and promotion value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the bearing assembly structure according to an embodiment of the present invention; Figure 3 This is an exploded structural diagram of a bearing assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the rectifier ring assembly structure according to an embodiment of the present invention.

[0026] Figure label: 100. Worm gear machine body; 110. Flange ring body; 200. Rectifier ring assembly; 210. Connecting ring; 220. Rectifier blade; 221. Guide cone; 222. Rectifier tooth; 300, bearing assembly; 310, fixed seat; 320, fixed ring body; 330, float rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a noise-reducing turbocharger.

[0030] Combination Figures 1-4 As shown, the present invention provides a noise-reducing turbocharger, including a worm gear body 100, a rectifier ring assembly 200, a bearing assembly 300, and a flange ring 110, wherein the flange ring 110 is fixedly disposed on the outer surface of the worm gear body 100 for external connection and support fixation.

[0031] The exhaust port of the worm gear body 100 is connected to a rectifier ring assembly 200. This rectifier ring assembly 200 is mainly used to rectify and guide the high-speed exhaust flow and to reduce noise. The rectifier ring assembly 200 includes a flexible connecting ring 210 and several rectifier blades 220. The connecting ring 210 is arranged in a ring shape and is a flexible component made of high-temperature resistant elastic rubber material. It is sleeved on the outside of the exhaust end of the worm gear body 100 to flexibly connect the exhaust end of the worm gear body 100 to the component, avoiding vibration transmission and seal damage caused by rigid connection.

[0032] Multiple rectifier blades 220 are fixedly installed inside the connecting ring 210 and are evenly distributed in a circumferential direction. The rectifier blades 220 are arranged in a spiral oblique manner, thereby forming a tangential guiding effect when the airflow passes through them and reducing vortex disturbance. The end of each rectifier blade 220 is connected to a guide cone 221. The windward surface of the guide cone 221 has a conical structure and is arranged coaxially with the connecting ring 210. It is used to guide the exhaust airflow towards the center and slow down flow separation.

[0033] The leeward side of the rectifier blade 220 is provided with rectifier teeth 222. The rectifier teeth 222 have a sawtooth structure, and the thickness of the tooth blades gradually decreases from the root to the tip along the direction of airflow. This can break the boundary layer wake vortex during exhaust flow and effectively reduce exhaust noise.

[0034] To provide overall support for the rectifier ring assembly 200 and the worm gear machine body 100, this invention includes a support assembly 300. This assembly is installed below the worm gear machine body 100 and includes a fixed base 310 and two fixed ring bodies 320 fixed to the top surface of the fixed base 310. The two fixed ring bodies 320 are arranged parallel to each other and fitted together. Each of their inner sides is provided with several float rods 330. The float rods 330 are arranged obliquely, and one end of each float rod 330 is fixedly connected to the surface of the flange ring body 110 to provide structural cushioning.

[0035] In this embodiment, the fixed ring 320 is a ring component made of high-strength aluminum alloy to ensure good structural strength and weight control; the float rod 330 is made of elastic steel and has a certain deformability. During the operation of the worm gear machine body 100, it can effectively absorb vibration and impact loads, avoid the flange connection from loosening or failure due to dynamic interference, thereby improving structural stability and service life.

[0036] Through the above structural configuration, this utility model achieves the following multiple technical effects: First, the soft connection structure between the flexible connecting ring 210 and the exhaust component absorbs some of the displacement caused by thermal expansion and contraction and exhaust fluctuations, avoiding stress concentration in the hard connection; Second, the rectifier blade 220 and the guide cone 221 work together to guide the airflow, and the rectifier tooth 222 effectively weakens turbulence noise; Third, the flexible support structure formed by the float rod 330 improves the vibration reduction capability of the bearing assembly, so that the turbocharger remains stable and reliable during long-term high-speed operation. Working principle and usage process of this utility model: The noise-reducing turbocharger described in this utility model achieves a comprehensive technical effect of rectification, noise reduction, and structural vibration reduction by orderly guiding and weakening the exhaust airflow during operation.

[0037] The rectifier ring assembly 200 is located at the exhaust port of the worm gear machine body 100 and is a flexible connection structure used to achieve a flexible connection between the worm gear machine body 100 and subsequent components. Specifically, the connecting ring 210 in the rectifier ring assembly 200 is a flexible collar structure, with several spirally arranged rectifier blades 220 fixed on its inner side. The rear end of the rectifier blades 220 is connected to the guide cone 221, and one side is provided with rectifier teeth 222 on the leeward side. When the airflow passes through, the rectifier blades 220 guide the high-energy exhaust to flow in an orderly manner along a specific angle direction, the guide cone 221 converges and stabilizes the central airflow, and the rectifier teeth 222 disperse the wake vortex, effectively suppressing fluid noise caused by boundary layer shedding, thereby achieving the purpose of exhaust rectification and noise reduction.

[0038] Meanwhile, to ensure structural stability and system buffering performance during the operation of the rectifier, a flange ring 110 is provided on the outer side of the worm gear main body 100, and is connected to the external support platform through the bearing assembly 300. The bearing assembly 300 constitutes a flexible support structure, mainly including a fixed seat 310 and two parallel fixed rings 320. The two fixed rings 320 are flexibly connected by several counter-arranged float rods 330. The float rods 330 are made of elastic steel and can effectively absorb the impact load caused by engine vibration during the operation of the device, avoiding structural fatigue and loosening at the flange connection, thereby improving the stability and reliability of the entire machine.

[0039] In summary, this utility model achieves flexible coupling and vibration buffering between the worm gear engine body 100 and the exhaust component by setting up a rectifier ring assembly 200 with flexible connection and a bearing assembly 300 with flexible support. Combined with the spiral rectifier blade, guide cone surface and sawtooth turbulence, it achieves the triple technical goals of exhaust rectification, noise reduction and structural stability. It is suitable for noise reduction and optimization applications of various high-performance turbocharger systems.

[0040] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A noise-reducing turbocharger, characterized in that, The system includes a worm gear machine body (100), a rectifier ring assembly (200), a bearing assembly (300), and a flange ring (110) fixed to the surface of the worm gear machine body (100). The exhaust port of the worm gear machine body (100) is connected to the rectifier ring assembly (200). The rectifier ring assembly (200) includes a connecting ring (210) and several rectifier blades (220) fixed to the inner side of the connecting ring (210). The ends of the rectifier blades (220) are connected to guide cones (221). One side of the 220 is provided with a rectifier tooth (222) on the leeward side. The rectifier blade (220) is evenly distributed in a circumferential direction on the outer periphery of the guide cone (221). The bearing assembly (300) includes a fixed seat (310) and two fixed ring bodies (320) fixed to the top surface of the fixed seat (310). The inner side of the two fixed ring bodies (320) is provided with a number of floating lugs (330) arranged in opposite directions. The other end of the floating lugs (330) is fixedly connected to the surface of the flange ring body (110).

2. The noise-reducing turbocharger according to claim 1, characterized in that, The connecting ring (210) is a flexible collar structure used for the flexible connection between the air outlet end of the worm gear machine body (100) and the components.

3. The noise-reducing turbocharger according to claim 1, characterized in that, The windward face of the guide cone (221) is conical and coaxially arranged with the connecting ring (210), and the rectifier blade (220) is arranged in a spiral oblique direction.

4. The noise-reducing turbocharger according to claim 1, characterized in that, The rectifier tooth (222) is sawtooth-shaped, and the thickness of the tooth gradually decreases along the direction of airflow.

5. The noise-reducing turbocharger according to claim 1, characterized in that, The connecting ring (210) is a flexible component made of high-temperature resistant elastic rubber material.

6. The noise-reducing turbocharger according to claim 1, characterized in that, The two fixed ring bodies (320) are arranged in parallel and fit together. The float rods (330) inside the fixed ring bodies (320) are arranged obliquely, and one end of the float rods (330) inside the two fixed ring bodies (320) is fixedly connected to the surface of the flange ring body (110).

7. The noise-reducing turbocharger according to claim 1, characterized in that, The fixed ring (320) is a ring-shaped component made of high-strength aluminum alloy, and the float rod (330) is a deformable component made of elastic steel, used to absorb vibration and buffer structural impact during operation.

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