Air intake and exhaust silencing device of power van
By designing V-shaped sound absorbing plates and air guide sound absorbing plates in the air inlet and exhaust channels of the power supply vehicle, the problem of noise propagation of diesel generators in the power supply vehicle is solved, and a significant noise reduction effect is achieved.
Patent Information
- Application Number
- CN202422473497.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-14
AI Technical Summary
In the prior art, installing a sound-silence plate on the inner wall of the power supply vehicle cannot effectively reduce the noise during the operation of the diesel generator, especially the noise propagation problem during the inlet and exhaust air.
An air inlet and exhaust sound silencer mechanism is designed, including a V-shaped sound silencer plate and a wind guide sound silencer plate. By increasing the contact area and contact frequency of the sound silencer plate in the inlet and exhaust channels, noise is reduced by multiple reflections and absorption.
It effectively reduces the noise propagation during operation of the power supply vehicle, especially the noise reduction effect at the air inlet and outlet, and is suitable for use scenarios where quiet environments are required.
Smart Images
Figure CN223216479U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an air intake and exhaust silencer in the technical field of power supply vehicles. Background Art
[0002] The power supply vehicle mainly provides backup power for the power system or provides continuous and uninterrupted power supply for a long time. It can output full power continuously and uninterruptedly for a long time, providing power supply guarantee for the power system. However, the power supply vehicle usually uses a diesel generator to generate electricity. The diesel generator will generate a large and continuous noise when working, so it needs to be treated to reduce noise. In the existing technology, silencers are usually installed on the inner wall of the power supply vehicle to reduce noise. However, since the diesel generator generates a lot of heat when in use and also requires fresh air, blinds are opened on the car body for air intake and exhaust, which plays a role in heat dissipation and maintaining air circulation. Therefore, simply relying on the silencer installed on the inner wall of the car body cannot achieve a good noise reduction effect. Utility Model Content
[0003] The utility model aims to provide an air intake and exhaust silencer for a power supply vehicle, which can effectively reduce the noise level generated by the power supply vehicle when it is working.
[0004] To achieve the above-mentioned purpose, the utility model provides an air intake and exhaust silencer device for a power supply vehicle, including an air intake silencer mechanism, which is arranged on both sides of the air intake chamber at the rear of the vehicle compartment, and an exhaust silencer mechanism is arranged in the air outlet chamber at the front of the vehicle compartment, and the exhaust silencer mechanism is equipped with an air outlet silencer mechanism, which is arranged on both sides of the air outlet chamber.
[0005] Compared with the prior art, the beneficial effect of the present invention is that when the power supply vehicle is working, the exhaust fan in the vehicle draws in cold air from outside on both sides of the air inlet chamber at the rear of the vehicle, and the noise of the diesel generator when working is greatly reduced by the air inlet silencer mechanism and then transmitted from the air inlet, while the exhaust fan discharges the hot air in the vehicle into the air outlet chamber, and the noise emitted by the diesel generator is greatly reduced by the exhaust silencer mechanism and the air outlet silencer mechanism before being transmitted from the air outlet. In this way, whether it is the air inlet or the air outlet, the noise of the diesel generator is effectively reduced when it is transmitted, so that the noise transmitted when the power supply vehicle is working is much smaller, and the propagation of noise is effectively reduced.
[0006] As a further improvement of the present invention, the air inlet silencer mechanism includes an air inlet frame, in which a plurality of V-shaped air inlet silencer plates are arranged side by side in the air inlet frame with air inlet channels left between each of the plates.
[0007] In this way, when the V-shaped air inlet silencer plates are placed side by side, the length of the air inlet channel formed between the two can be effectively increased, thereby increasing the contact area between the working noise of the diesel generator and the silencer plates when passing through the air inlet channel. Moreover, the propagation angle of the noise in the air inlet channel makes the reciprocating contact frequency between the noise and the silencer plates higher, thereby improving the noise reduction degree and greatly reducing the noise.
[0008] As a further improvement of the present invention, the exhaust silencer mechanism includes several exhaust silencer plates, which are placed side by side in the exhaust chamber and have exhaust channels between them. A pair of air guide silencer plates are provided at the front end of the middle exhaust silencer plate, and the air guide silencer plates are arranged in an eight-shaped shape and their front ends are in contact with the front wall of the air outlet chamber.
[0009] In this way, the hot air flows through the exhaust channel and contacts the exhaust silencer plate to reduce the noise. When the hot air touches the air guide silencer plate, it will be absorbed again to reduce the noise, and it will rebound and redirect and finally flow to the air outlet silencer mechanism.
[0010] As a further improvement of the present invention, the rear ends of the two outermost exhaust muffler plates are in contact with the rear wall of the air outlet chamber, and gaps are left between the rear ends of the remaining exhaust muffler plates and the rear wall of the air outlet chamber.
[0011] In this way, the exhaust fan is surrounded by the outermost exhaust silencer plate, so that the hot air discharged by the exhaust fan and the noise emitted by the diesel generator are all between the exhaust silencer plates. This can avoid noise expansion to the greatest extent, thereby better reducing the noise through the exhaust silencer plate, and better dispersing the hot air along the exhaust duct.
[0012] As a further improvement of the present invention, the air outlet silencer mechanism includes an air outlet frame, in which a plurality of V-shaped air outlet silencer plates are arranged side by side in the air outlet frame with air outlet channels left between each of the plates.
[0013] In this way, the length of the air inlet channel formed between the two V-shaped air inlet silencer plates is effectively increased, thereby increasing the contact area between the working noise of the diesel generator and the silencer plates when passing through the air inlet channel. Moreover, the propagation angle of the noise in the air inlet channel makes the reciprocating contact frequency between the noise and the silencer plates higher, thereby improving the noise reduction degree and greatly reducing the noise.
[0014] As a further improvement of the present invention, the inner side of the air inlet frame is close to the diesel generator set.
[0015] This can increase the length of the air inlet silencer plate to match the depth of the air inlet frame, thereby increasing the length of the air inlet channel and further increasing the noise reduction and silencing effect.
[0016] As a further improvement of the present invention, two groups of air inlet silencer mechanisms are provided on both sides of the air inlet chamber.
[0017] This can further improve the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the distribution structure of the utility model in the carriage.
[0019] Figure 2 This is an exploded view of the air inlet silencer mechanism of the utility model.
[0020] Figure 3 It is a structural diagram of the exhaust and silencer mechanism of the utility model.
[0021] Figure 4 This is an exploded view of the air outlet and silencer mechanism of the utility model.
[0022] Among them, 1 is an air guide silencer plate, 2 is an exhaust silencer plate, 3 is an exhaust duct, 4 is a diesel generator, 5 is an air inlet silencer plate, 6 is an air inlet duct, 7 is an air outlet silencer plate, 8 is an air outlet duct, 9 is an exhaust chamber, 10 is an air inlet chamber, 11 is an air inlet frame, and 12 is an air outlet frame. DETAILED DESCRIPTION
[0023] The present invention is further described below with reference to the accompanying drawings:
[0024] like Figure 1-4 The power supply vehicle shown in the figure includes an air inlet and exhaust silencer device, which is arranged on both sides of the air inlet chamber 10 at the rear of the vehicle, and an exhaust silencer mechanism is arranged in the air outlet chamber at the front of the vehicle. The exhaust silencer mechanism is equipped with an air outlet silencer mechanism, which is arranged on both sides of the air outlet chamber.
[0025] The air inlet muffler mechanism includes an air inlet frame 11, within which are disposed a plurality of V-shaped air inlet muffler panels 5. These panels 5 are arranged side by side within the frame 11, with air inlet channels 6 between them. The inner side of the air inlet frame 11 is adjacent to the four diesel generators. Two sets of the air inlet muffler mechanism are located on either side of the air inlet chamber 10.
[0026] The exhaust muffler mechanism includes several exhaust muffler panels 2, which are placed side by side within the exhaust chamber 9, with exhaust ducts 3 between them. A pair of guide muffler panels 1 are positioned at the front end of the center exhaust muffler panel 2. These panels 1 are arranged in a figure-eight pattern, with their front ends aligned with the front wall of the exhaust chamber. The rear ends of the two outermost exhaust muffler panels 2 are aligned with the rear wall of the exhaust chamber, while gaps are left between the rear ends of the remaining exhaust muffler panels 2 and the rear wall of the exhaust chamber.
[0027] The air outlet silencer mechanism includes an air outlet frame 12 , in which a plurality of V-shaped air outlet silencer plates 7 are arranged. The air outlet silencer plates 7 are arranged side by side in the air outlet frame 12 with air outlet channels 8 left between each of them.
[0028] In the present invention, air inlet shutters are opened on both sides of the air inlet chamber 10 of the carriage, and the air inlet shutters are equipped with an air inlet silencer mechanism. An exhaust port is opened on the rear wall of the exhaust chamber 9 of the carriage, and the exhaust port is directly opposite to the exhaust fan. Air outlet shutters are opened on both sides of the exhaust chamber 9, and the air outlet silencer mechanism is equipped with the air outlet shutters.
[0029] During operation, the diesel generator 4 is started, the air inlet louvers and the air outlet louvers are opened, and the exhaust fan in the heat dissipation mechanism of the diesel generator 4 is started. The exhaust fan directly sucks air from the air inlet chamber 10, so that the external cold air is sucked into the air inlet chamber 10 through the air inlet louvers. During this process, the noise emitted by the diesel generator 4 will be transmitted along the air inlet channel 6 of the air inlet muffler mechanism toward the air inlet louvers. Since the air inlet muffler plates 5 are V-shaped, the air inlet channels 6 formed between the air inlet muffler plates 5 are also V-shaped. When passing through the muffler channel, the noise will move forward while rebounding back and forth between the air inlet muffler plates 5, and will be continuously absorbed when it impacts the air inlet muffler plates 5. In this way, the energy of the noise is continuously weakened, and when it is transmitted from the air inlet louvers to the outside of the vehicle, its size is effectively reduced.
[0030] The cold air sucked in by the exhaust fan becomes hot air after passing through the diesel generator 4, and is discharged into the exhaust chamber 9 by the exhaust fan, enters the air outlet channel 8 through the exhaust channel 3, and is finally discharged from the air outlet louver. During this process, the noise generated by the diesel generator 4 will also be transmitted from the air outlet louver along the same path. The noise first enters the exhaust duct 3. Since the exhaust duct 3 completely surrounds the exhaust port of the exhaust fan and is divided by multiple exhaust silencer plates 2, the noise will enter multiple exhaust ducts 3, and then absorb part of the energy after contacting the exhaust silencer plate 2. Then it will hit the wind guide silencer plate. Since the wind guide silencer plate is obliquely facing the exhaust duct 3 and the air outlet silencer mechanism, the two wind guide silencer plates will bounce part of the noise back into the exhaust duct 3 and collide with the exhaust silencer plate 2 to continue noise reduction, and the other part will be transmitted to the air outlet silencer mechanism. This part of the noise will pass through the air outlet duct 8, repeatedly collide with the noise reduction in the V-shaped air outlet duct 8, and then be transmitted outside the car through the air outlet shutters. In this way, the noise is effectively reduced after multiple noise reduction processes.
[0031] The utility model ensures that when the power supply vehicle is working normally, the noise is greatly reduced when it is discharged through the air inlet louvers and the air outlet louvers, so that it is more suitable for use in an environment where quietness is required.
[0032] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed herein, technicians in this field can make some substitutions and deformations of some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.
Claims
1. A power supply vehicle intake and exhaust air silencer, characterized in that: It includes an air inlet silencer mechanism, which is arranged on both sides of the air inlet chamber at the rear of the car, and an exhaust silencer mechanism is arranged in the air outlet chamber at the front of the car. The exhaust silencer mechanism is equipped with an air outlet silencer mechanism, which is arranged on both sides of the air outlet chamber.
2. The power supply vehicle air intake and exhaust silencer according to claim 1, characterized in that: The air inlet silencer mechanism includes an air inlet frame, in which a plurality of V-shaped air inlet silencer plates are arranged side by side in the air inlet frame with air inlet channels left between them. The inner side of the air inlet frame is close to the diesel generator set.
3. The power supply vehicle air intake and exhaust silencer according to claim 2, characterized in that: The exhaust silencer mechanism includes several exhaust silencer plates, which are placed side by side in the exhaust chamber and have exhaust channels between them. A pair of air guide silencer plates are provided at the front end of the middle exhaust silencer plate. The air guide silencer plates are arranged in an eight-shaped shape and their front ends are in contact with the front wall of the air outlet chamber.
4. The power supply vehicle air intake and exhaust silencer according to claim 3, characterized in that: The rear ends of the two outermost exhaust muffler plates are in contact with the rear wall of the air outlet chamber, and gaps are left between the rear ends of the remaining exhaust muffler plates and the rear wall of the air outlet chamber.
5. The power supply vehicle air intake and exhaust silencer according to claim 4, characterized in that: The air outlet silencer mechanism comprises an air outlet frame, in which a plurality of V-shaped air outlet silencer plates are arranged side by side in the air outlet frame with air outlet channels left between each of the plates.
6. The power supply vehicle air intake and exhaust silencer according to claim 5, characterized in that: There are two sets of air inlet silencer mechanisms on both sides of the air inlet chamber.