Air outlet pipe capable of reducing air leakage noise of anti-surge valve

Abstract

The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve comprises a first end, a second end and a pipe body, the first end and the second end are the two ends of the pipe body, the first end is connected with the anti-surge valve, the second end is connected with an air inlet pipe of a supercharger, the air inlet pipe of the supercharger is of a 90-degree bent angle structure, and the air outlet pipe of the supercharger is connected with the anti-surge valve. The first end comprises an air inlet and an air outlet, the air inlet is used for being communicated with an air filter, the air outlet is used for being communicated with a supercharger, and the second end is arranged at the outer corner of the corner structure and partially extends into the corner structure so as to guide air leakage flow from the first end to the direction of the air outlet of the corner structure. The air outlet pipe is simple in structure and good in noise reduction effect, and the customer experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an air outlet pipe capable of reducing the air leakage noise of an anti-surge valve. Background Art

[0002] In the field of engine technology, superchargers are commonly used to boost the air entering the engine to increase power and efficiency. However, the temperature of the supercharged air rises significantly after passing through the supercharger. Without proper cooling, the high-temperature air entering the engine can negatively impact its efficiency and lifespan. Therefore, an intercooler is often installed between the supercharger and the engine to cool the supercharged air, ensuring it enters the engine at an appropriate temperature, thereby optimizing the combustion process and improving overall engine performance. When the engine is operating under high load, both the tip pressure (TIP) and the throttle position pressure (MAP) reach high levels. This is because under high load conditions, the engine requires more air to maintain efficient combustion, and a wider throttle opening allows more air to enter the engine. However, when the throttle is suddenly reduced from a high-load state, the required intake air volume decreases sharply, and the throttle position also decreases rapidly, resulting in a sudden drop in MAP. At this time, the supercharger continues to provide high-pressure air to the engine due to inertia, but due to the sudden closing of the throttle, this high-pressure air cannot enter the engine smoothly, causing pressure fluctuations inside the supercharger and causing surge.

[0003] Surge is an unstable phenomenon during supercharger operation that not only reduces engine performance but can also damage the supercharger itself. To prevent surge, an anti-surge valve is typically installed before the throttle. When the pressure differential across the throttle exceeds the valve's bleed pressure setting, the valve activates, releasing high-pressure air before the throttle through its bleed port to the supercharger inlet. This quickly reduces transient throttle pressure, preventing supercharger surge. However, the operation of the anti-surge valve creates a significant problem: bleed noise. When high-pressure air before the throttle is rapidly released through the anti-surge valve bleed port to the supercharger inlet, it creates strong airflow shock and vortexes, generating high noise levels. This noise not only negatively impacts the acoustic environment within the engine compartment but can also be transmitted through the air filter inlet, disturbing passengers in the cabin and severely impacting the driving experience.

[0004] Therefore, to address the noise problem caused by the operation of the anti-surge valve in the existing technology, a new structure or device is urgently needed to effectively reduce this noise while ensuring the normal operation of the anti-surge valve and preventing the occurrence of supercharger surge. This will not only help improve the overall performance and reliability of the engine, but also significantly enhance the driving experience and satisfaction of customers.

[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Utility Model Content

[0006] The utility model aims to provide an air outlet pipe capable of reducing the air leakage noise of an anti-surge valve, so as to solve the technical problem of noise generated during the operation of the anti-surge valve in the prior art.

[0007] To this end, the utility model proposes an air outlet pipe capable of reducing the air leakage noise of the anti-surge valve.

[0008] Preferably, the present invention may also have the following technical features:

[0009] An outlet pipe capable of reducing the air leakage noise of an anti-surge valve comprises a first end, a second end and a pipe body, wherein the first end and the second end are the two ends of the pipe body, the first end is connected to the anti-surge valve, and the second end is connected to the supercharger intake pipe, the supercharger intake pipe has a 90° bend structure, and comprises an air inlet and an air outlet, the air inlet is used to communicate with an air filter, and the air outlet is used to communicate with the supercharger, the second end is arranged at the outer corner of the bend structure, and partially extends into the interior of the bend structure to guide the leaked air flow coming out of the first end toward the air outlet of the bend structure.

[0010] Preferably, the second end is arranged in the extension direction of the air outlet, with its axis coinciding with the central axis of the air outlet, and the lower part of the second end is arranged as an oblique cut, and at the oblique cut, the tube wall close to the air inlet is longer than the tube wall away from the air inlet.

[0011] Preferably, the second end is arranged on the left side of the extension direction of the air outlet, and the central axis of the second end forms an acute angle with the central axis of the air outlet.

[0012] Preferably, the lower portion of the second end is configured as a flat cutout.

[0013] Preferably, the lower portion of the second end is configured as an oblique cut, and at the oblique cut, the tube wall on the side close to the air inlet is longer than the tube wall on the side away from the air inlet.

[0014] Preferably, the tube body is composed of multiple sections of pipelines with different cross-sectional areas, so that the gas in the tube body undergoes a process of alternating expansion and contraction.

[0015] Preferably, a plurality of silencers are arranged around the outside of the pipe body.

[0016] Preferably, the muffler is a resistive muffler and / or a reactive muffler.

[0017] The beneficial effects of the present invention compared with the prior art include: the utility model relates to an outlet pipe that can reduce the air leakage noise of the anti-surge valve, which guides the leaking air flow coming out of the anti-surge valve through the first end of the outlet pipe towards the air outlet of the bent structure, reduces the collision of the leaking air flow with the wall of the supercharger intake pipe, and directly guides the leaking air flow towards the air outlet of the bent structure, so that the outlet pipe can quickly leak air toward the supercharger, avoiding the continuous generation of large noise; the pipe body is arranged to be composed of multiple sections of pipelines with different cross-sectional areas, so that the gas in the pipe body undergoes a process of alternating expansion and contraction, and the air flow undergoes multiple reflections inside the pipe body, consumes its energy, and also has the effect of reducing noise. The outlet pipe has a simple structure, good noise reduction effect, and enhances customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first schematic diagram of a specific implementation method of the present utility model.

[0019] Figure 2 It is a second schematic diagram of a specific implementation method of the present utility model.

[0020] Figure 3 This is a third schematic diagram of a specific implementation of the present utility model.

[0021] Figure 4 This is a fourth schematic diagram of a specific implementation method of the present utility model.

[0022] Figure 5 This is a fifth schematic diagram of a specific implementation method of the present utility model.

[0023] Figure 6 This is the sixth schematic diagram of a specific implementation method of the present utility model.

[0024] Figure 7 This is the seventh schematic diagram of a specific implementation method of the present utility model.

[0025] Explanation of the reference numerals: 1 - anti-surge valve; 2 - outlet pipe; 21 - first end; 22 - second end; 23 - pipe body; 3 - supercharger; 31 - supercharger inlet pipe; 311 - air inlet; 312 - air outlet; 4 - muffler. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope and application of the present invention.

[0027] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically specified.

[0028] An outlet pipe capable of reducing the noise of air leakage from an anti-surge valve, such as Figures 1 to 7 As shown, it includes a first end 21, a second end 22 and a tube body 23, wherein the first end 21 and the second end 22 are the two ends of the tube body 23, the first end 21 is connected to the anti-surge valve 1, and the second end 22 is connected to the supercharger intake pipe 31, the supercharger intake pipe 31 is a 90° bend structure, which includes an air inlet 311 and an air outlet 312, the air inlet 311 is used to communicate with the air filter (not shown in the figure), and the air outlet 312 is used to communicate with the supercharger 3, and the second end 22 is arranged at the outer corner of the bend structure and partially extends into the interior of the bend structure to guide the deflated air flow coming out of the first end 21 to the direction of the air outlet 312 of the bend structure. The above-mentioned outlet pipe 2 guides the deflated air flow coming out of the anti-surge valve 1 through the first end 21 of the outlet pipe 2 to the direction of the air outlet 312 of the angled structure, thereby reducing the collision of the deflated air flow with the wall of the supercharger inlet pipe 31 and directly guiding the deflated air flow to the direction of the air outlet 312 of the angled structure, so that the outlet pipe 2 can quickly deflate toward the supercharger 3, thereby avoiding the continuous generation of loud noise.

[0029] In some examples of this embodiment, Figure 2 and 6 As shown, the second end 22 is arranged in the extension direction of the air outlet 312, and its axis coincides with the central axis of the air outlet 312. The lower part of the second end 22 is arranged as an oblique cut. At the oblique cut, the tube wall close to the air inlet 311 is longer than the tube wall away from the air inlet 311, so as to guide the airflow toward the air outlet 312.

[0030] In other examples of this embodiment, Figure 3 and 7 As shown, the second end 22 is disposed on the left side of the extension direction of the air outlet 312, and the central axis of the second end 22 forms an acute angle with the central axis of the air outlet 312. Specifically, the lower portion of the second end 22 can be configured as a flat cutout or an oblique cutout, and at the oblique cutout, the tube wall on the side closer to the air inlet 311 is longer than the tube wall on the side farther from the air inlet 311.

[0031] In other examples of this embodiment, the tube body is composed of multiple sections of pipes with different cross-sectional areas, that is, the tube body is connected by pipes of different diameters, so that the gas in the tube body undergoes a process of alternating expansion and contraction, that is, the airflow undergoes multiple reflections inside the tube body, consuming its energy, which can reduce the noise generated.

[0032] In other examples of this embodiment, Figure 1 and 5 As shown, a plurality of mufflers 4 are arranged around the outside of the pipe body 23. Specifically, a resistive muffler can be used. This type of muffler is filled with sound-absorbing material, such as sound-absorbing cotton. When air flows through, the sound-absorbing material absorbs part of the sound energy, thereby reducing the propagation of noise. Alternatively, a reactive muffler can be used. This type of muffler uses a sudden change in the cross-sectional area of ​​the pipe to generate a discontinuity in acoustic impedance, thereby reflecting or consuming part of the sound energy. Of course, in actual use, one or a combination of two of the above mufflers can be used, and there is no specific limitation.

[0033] Those skilled in the art will recognize that numerous variations to the foregoing description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0034] Although what are considered exemplary embodiments of the present invention have been described and illustrated, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the present invention without departing from the central concept of the present invention as described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but rather may include all embodiments and their equivalents falling within the scope of the present invention.

Claims

1. An air outlet pipe capable of reducing the noise of air leakage from an anti-surge valve, characterized by: The invention comprises a first end, a second end and a tube body, wherein the first end and the second end are the two ends of the tube body, the first end is connected to the anti-surge valve, the second end is connected to the supercharger intake pipe, the supercharger intake pipe is in a 90° bend structure, and comprises an air inlet and an air outlet, the air inlet is used to communicate with the air filter, and the air outlet is used to communicate with the supercharger, and the second end is arranged at the outer corner of the bend structure and partially extends into the interior of the bend structure to guide the deflated air flow coming out of the first end toward the air outlet of the bend structure.

2. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 1, characterized in that: The second end is arranged in the extension direction of the air outlet, wherein the axis thereof coincides with the central axis of the air outlet, and the lower part of the second end is arranged as an oblique cut, and at the oblique cut, the tube wall close to the air inlet side is longer than the tube wall away from the air inlet side.

3. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 1, characterized in that: The second end is arranged on the left side of the extension direction of the air outlet, and the central axis of the second end forms an acute angle with the central axis of the air outlet.

4. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 3, characterized in that: The lower portion of the second end is configured as a flat cutout.

5. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 3, characterized in that: The lower portion of the second end is configured as an oblique insertion opening, and at the oblique insertion opening, the tube wall on the side close to the air inlet is longer than the tube wall on the side away from the air inlet.

6. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 1, characterized in that: The tube body is composed of multiple sections of pipelines with different cross-sectional areas, so that the gas in the tube body undergoes a process of alternating expansion and contraction.

7. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 1, characterized in that: A plurality of silencers are arranged around the outside of the pipe body.

8. The air outlet pipe capable of reducing the air leakage noise of the anti-surge valve according to claim 7, characterized in that: The muffler is a resistive muffler and / or a reactive muffler.

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