Vehicle emission device and hydrogen fuel cell vehicle
By designing the structure of the vehicle emission device with the inlet, the outlet, and the sound silencer in the middle, the liquid water and gaseous water vapor are separated and discharged, the problem of liquid water pollution and the sound silencer is solved and the sound silencer performance is maintained.
Patent Information
- Application Number
- CN202310995118.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-08
- Publication Date
- 2025-02-18
AI Technical Summary
In the existing hydrogen fuel cell vehicle emission device, liquid water adheres to the silence cotton during discharge, resulting in a degradation of the silence performance of the silence device, and the water membrane blocks the porous silence tube, hindering the emission of gaseous water vapor.
A vehicle emission device is designed, through the inlet under the lower, the outlet under the upper, and the sound silence device is in the middle, so that liquid water collects downwards and discharges from one outlet under the action of gravity, while gaseous water vapor collects upwards, and after elimination, After the sound silence of the sound device, it is discharged from another outlet to avoid contamination of the sound silence device by liquid water.
It effectively prevents the contamination of the sound-relieving device by liquid water, maintains the sound-relieving performance of the device, and ensures the effective emission of gaseous water vapor.
Smart Images
Figure CN119481176A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle emission device and a hydrogen fuel cell vehicle. Background Art
[0002] Hydrogen fuel cell vehicles use hydrogen as fuel. Through the fuel cell reaction, the hydrogen in the vehicle's hydrogen storage device reacts with oxygen in the air to generate electricity to drive the vehicle. After the reaction is completed, the water generated is discharged through the exhaust device in the form of gaseous water vapor and liquid water, and the discharge of water vapor will produce noise.
[0003] The emission devices in the related art are mostly equipped with a silencing device such as a porous silencing pipe or silencing cotton, so that the water vapor is silenced in advance by the silencing device when being discharged, so as to reduce the emission noise.
[0004] However, due to the presence of liquid water in the emissions, the liquid water adheres to the silencer cotton during discharge. At the same time, due to the surface tension of water, the holes in the porous silencer pipe are covered with a water film, making it difficult for the liquid water to be discharged. At the same time, the silencer performance of the silencer device is significantly reduced. Summary of the invention
[0005] In order to solve the above technical problems, the present application provides a vehicle emission device and a hydrogen fuel cell vehicle.
[0006] The embodiments of the present application disclose the following technical solutions:
[0007] In a first aspect, an embodiment of the present application discloses a vehicle emission device, the device comprising:
[0008] a device inlet, a first device outlet, a second device outlet, a first muffler, and a housing;
[0009] The device inlet is located on the side wall of the housing;
[0010] The first device outlet is located on the top wall or the side wall of the housing, and the first device outlet is higher than the device inlet;
[0011] The second device outlet is located at the bottom wall or the side wall of the housing, and the second device outlet is lower than the device inlet;
[0012] The first silencer is arranged in the shell, and is arranged between the horizontal plane where the device inlet is located and the horizontal plane where the second device outlet is located, and at least one side of the first silencer is connected to the side wall of the shell.
[0013] Optionally, the first sound-absorbing device comprises: a porous sound-absorbing wall and sound-insulating cotton;
[0014] The porous sound-absorbing wall serves as the wall surface of the first sound-absorbing device, and a sound-absorbing space is left inside to constitute the first sound-absorbing device;
[0015] The sound insulation cotton is arranged in the sound-absorbing space formed by the porous sound-absorbing wall.
[0016] Optionally, the device further comprises a second muffler:
[0017] The second muffler is arranged in the shell, between the horizontal plane where the inlet of the device is located and the top of the shell, and is connected to the side wall of the shell.
[0018] Optionally, the first silencer is not horizontally arranged, a first side of the first silencer is higher than a second side of the first silencer, the first side is connected to the shell; relative to the second side, the first side is closer to the device inlet.
[0019] Optionally, three sides of the first silencer device except the second side are connected to the side walls of the shell.
[0020] Optionally, the device inlet is located on the first shell side wall, the first device outlet is located on the second shell side wall, and the first shell side wall is opposite to the second shell side wall;
[0021] The second device outlet is located at the connection between the bottom wall of the shell and the second shell side wall.
[0022] Optionally, the device further comprises a condensing device, and the condensing device is arranged on an outlet of the first device.
[0023] Optionally, the first device outlet is located at the connection between the shell top wall and the second shell side wall;
[0024] The first muffler is suspended and fixed to the side wall via a fixing device.
[0025] Optionally, the bottom wall of the shell is not arranged horizontally, and the third side of the bottom wall is lower than the fourth side of the bottom wall; relative to the fourth side, the third side is closer to the outlet of the second device.
[0026] In a second aspect, an embodiment of the present application discloses a hydrogen fuel cell vehicle, characterized in that the hydrogen fuel cell vehicle is equipped with a vehicle emission device as described in the first aspect and any optional option of the first aspect.
[0027] It can be seen from the above technical scheme that the embodiment of the present application discloses a vehicle emission device, the device includes: a device inlet, a first device outlet, a second device outlet, a first silencer, and a shell; wherein the device inlet is located on the side wall of the shell; the first device outlet is located on the top wall or side wall of the shell, and the first device outlet is higher than the device inlet; the second device outlet is located on the bottom wall or side wall of the shell, and the second device outlet is lower than the device inlet; a first silencer is arranged in the shell, the first silencer is arranged between the horizontal plane where the device inlet is located and the top of the shell, and at least one side of the first silencer is connected to the side wall of the shell. Through this design, when the emission mixture enters the vehicle emission device, under the action of gravity, liquid water gathers downward and is discharged from one device outlet, while gaseous water vapor gathers upward, and after being silenced by the silencer, is discharged from another device outlet, thereby preventing liquid water from contaminating the silencer and ensuring the silencer performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0029] Figure 1 A vehicle emission device is provided for related technology;
[0030] Figure 2 A schematic diagram of a vehicle emission device provided in an embodiment of the present application;
[0031] Figure 3 A liquid water flow diagram in a vehicle exhaust device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0032] The embodiments of the present application are described below in conjunction with the accompanying drawings.
[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] See also Figure 1 , Figure 1A vehicle emission device is provided for related technologies. The device includes: a mixture emission passage, a porous silencer pipe as the passage wall, and silencer cotton located between the passage wall and the outer shell. When the mixture emitted by the vehicle is discharged to the outside through the mixture emission passage, under ideal conditions, gaseous water vapor passes through the porous silencer pipe to achieve primary silencer, and then achieves secondary silencer through the silencer cotton placed between the outer shell and the passage wall, while liquid water is discharged along the mixture emission passage, thereby achieving separation of liquid water and gaseous water vapor, and achieving silencer for water vapor at the same time.
[0035] However, in the actual implementation process, when the emission mixture passes through the emission passage, liquid water will also pass through the passage wall along the holes of the porous silencer pipe, thereby adhering to the silencer cotton and soaking the silencer cotton, causing the silencer performance of the silencer cotton to decrease. At the same time, due to the surface tension of water, when passing through the holes, liquid water forms a layer of water film on the holes to block the holes, making it impossible for gaseous water vapor to pass through the holes for silencer, which not only significantly reduces the silencer performance of the emission device, but also makes it difficult to discharge the liquid water attached to the silencer cotton, thereby further reducing the silencer ability.
[0036] In order to solve the above technical problems, the embodiment of the present application provides a vehicle emission device. Through the design mode of the inlet at the bottom, the outlet at the top, and the silencer in the middle, when the emission mixture enters the vehicle emission device, under the action of gravity, the liquid water gathers downward and is discharged from one device outlet, while the gaseous water vapor gathers upward, is silenced by the silencer, and is discharged from another device outlet, thereby preventing the liquid water from contaminating the silencer and ensuring the silencer performance of the device.
[0037] Without loss of generality, this embodiment will be based on Figure 2 The vehicle emission device shown in FIG. 1 is used as the description subject to describe the embodiment of the present application in detail. It should be understood that Figure 2 The information such as some components and installation angles of the vehicle emission device shown does not constitute a substantial limitation on the vehicle emission device for which protection is sought in this application.
[0038] See also Figure 2 , Figure 2 This is a schematic diagram of a vehicle emission device provided in an embodiment of the present application. In the figure:
[0039] 201: device inlet; 202: first device outlet; 204: housing; 205: second device outlet;
[0040] 203: silencer; wherein, 203(1): first silencer; 203(2): second silencer.
[0041] When the discharge mixture of liquid water and gaseous water is generated and begins to be discharged, the water enters the device from the inlet 201. Figure 2The vehicle emission device shown has its inlet disposed below the silencer. Therefore, when the mixture enters the device, the liquid water and the gaseous water vapor are separated due to gravity. The liquid water flows downward, along the bottom wall of the shell to the second device outlet 205, and is discharged along the second device outlet; the gaseous water vapor flows upward, through the silencer to the first device outlet 202 and is discharged.
[0042] In this embodiment, the silencer device, including the first silencer device and the second silencer device, are both arranged between the horizontal plane where the device inlet is located and the horizontal plane where the device outlet is located, so as to ensure that when the discharge mixture passes through the discharge device, the liquid water flows downward to avoid passing through the silencer device, and the gaseous water vapor flows upward to pass through the silencer device to achieve silencer.
[0043] In some possible implementations of this embodiment, the sound-absorbing device specifically includes a porous sound-absorbing wall and sound-insulating cotton.
[0044] For example, the silencer can be a device composed of a porous silencer wall with a silencer space, in which silencer cotton is filled. When gaseous water vapor passes through the silencer device, secondary silencer is achieved through the porous silencer wall and the silencer cotton. At the same time, no liquid water passes through, and the silencer cotton will not be soaked by the liquid water, thereby maintaining a high silencer performance.
[0045] In some possible implementations of this embodiment, in order to improve the muffler efficiency of the exhaust mixture entering the vehicle exhaust device, based on the above embodiment, the device further includes a second muffler:
[0046] The second muffler is arranged in the shell, between the horizontal plane where the inlet of the device is located and the top of the shell, and is connected to the side wall of the shell.
[0047] exist Figure 2 In the schematic diagram of the vehicle emission device shown, the two silencers can be configured as shown in 203 (1) and 203 (2) in the schematic diagram. In this case, the water vapor that cannot be completely silenced by the first silencer can be silenced for a second time through the redundant configuration of the two silencers, thereby further improving the gas-liquid separation capability and silencer performance of the vehicle emission device.
[0048] In order to speed up the flow rate of water vapor and liquid water and improve the discharge efficiency of the device, based on the above embodiment, further, the first silencer is not horizontally arranged, the first side of the first silencer is higher than the second side of the first silencer, and the first side is connected to the shell; relative to the second side, the first side is closer to the inlet of the device.
[0049] Please review Figure 2 , Figure 2The left side of 203 (1) is the first side of the first silencer, and the right side of 203 (1) is the second side of the first silencer. As a possible implementation method, the other three sides of the first silencer except the second side are connected to the side wall of the shell. When the discharge mixture enters the discharge device from the device inlet 201, due to the setting method of the first silencer, the airflow area for the gaseous water vapor to flow gradually decreases with the flow. Due to the continuous discharge of the mixture, the water vapor flow rate is continuously accelerated. When it reaches the end of the first silencer, as the airflow direction turns from right to upward, the change in airflow direction causes a gas vortex to form inside the device. The water vapor is accelerated to flow upward with the help of the gas vortex, and the liquid water is also driven by the gas vortex, just like high-speed wind blowing the water surface, prompting the liquid water to be thrown out and gathered in the second device outlet 205, thereby simultaneously accelerating the flow speed of liquid water and water vapor, and improving the discharge efficiency of the vehicle discharge device.
[0050] In order to maximize the use of the space inside the shell and increase the flow rate of gaseous water vapor as much as possible, based on the above embodiment, further, the device inlet is located on the first shell side wall, the first device outlet is located on the second shell side wall, and the first shell side wall is opposite to the second shell side wall;
[0051] The second device outlet is located at the connection between the bottom wall of the shell and the second shell side wall.
[0052] Please continue reading Figure 2 The device inlet 201 and the first device outlet 202 are respectively located at the diagonal corners of the shell. When water vapor flows inside the shell, it flows from the device inlet 201 through the silencer 203 to the first device outlet 202, and can pass through the entire space inside the shell, thereby improving the utilization rate of the internal space of the shell, increasing the flow rate of water vapor, and accelerating the silencer speed.
[0053] To facilitate the liquid water to gather at the outlet of the second device, based on the above embodiment, further, the bottom wall of the shell is not horizontally arranged, and the third side of the bottom wall is lower than the fourth side of the bottom wall; relative to the fourth side, the third side is closer to the outlet of the second device.
[0054] exist Figure 2 In the device shown, the left side of the bottom wall is the fourth side, and the right side of the bottom wall is the third side. With the help of gravity, when liquid water flows into the device, it automatically converges to the second device outlet by its own weight to accelerate the discharge of the liquid water.
[0055] See also Figure 3 , is a liquid water flow diagram in a vehicle exhaust device provided in an embodiment of the present application. Figure 2 The same parts of the vehicle exhaust device shown refer to the above Figure 2The relevant statements will not be repeated here.
[0056] and Figure 2 The device shown differs in that Figure 3 The device shown is provided with a condensing device at the first device outlet. When gaseous water vapor is discharged from the first device outlet, the condensing device can condense part of the water vapor into liquid water, which then flows along the shell side wall where the first device outlet is located to the shell bottom wall to be discharged from the second device outlet.
[0057] The water vapor inside the device that has been silenced by the silencer is condensed into water, so that the air pressure above the device is reduced. The pressure difference between the high air pressure at the bottom of the device and the low air pressure at the top of the device is used to accelerate the upward flow of water vapor in the mixture that subsequently enters the device, thereby increasing the silencer efficiency of the emission device.
[0058] In some possible implementations of this embodiment, in order to facilitate the smooth flow of condensed water to the bottom wall, based on the above embodiment, the silencer is further suspended and fixed to the side wall by a fixing device.
[0059] The fixing device may be a fixing component such as a rivet, through which the outer wall of the muffler is not in direct contact with the inner wall of the shell side wall, but a certain gap is left, thereby achieving suspended fixing. When the condensed liquid water flows down, the gap can provide a passage for the liquid water to flow, reducing the obstruction of the muffler to the liquid water flow.
[0060] In addition to the aforementioned vehicle emission device, the embodiment of the present application also provides a car including the vehicle emission device, wherein the car is a hydrogen fuel cell car. It is understandable that the other functions of the hydrogen fuel cell car are not the core invention of the present application, and those skilled in the art can realize them based on the prior art, so this specification will not elaborate on them.
[0061] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. Ordinary technicians in this field can understand and implement it without creative work.
[0062] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A vehicle exhaust device, characterized in that: The device comprises: a device inlet, a first device outlet, a second device outlet, a first muffler, and a housing; The device inlet is located on the side wall of the housing; The first device outlet is located on the top wall or the side wall of the housing, and the first device outlet is higher than the device inlet; The second device outlet is located at the bottom wall or the side wall of the housing, and the second device outlet is lower than the device inlet; The first silencer is arranged in the shell, and is arranged between the horizontal plane where the device inlet is located and the horizontal plane where the second device outlet is located, and at least one side of the first silencer is connected to the side wall of the shell.
2. The vehicle exhaust device according to claim 1, characterized in that: The first sound-absorbing device comprises: a porous sound-absorbing wall and sound-insulating cotton; The porous sound-absorbing wall serves as the wall surface of the first sound-absorbing device, and a sound-absorbing space is left inside to constitute the first sound-absorbing device; The sound insulation cotton is arranged in the sound-absorbing space formed by the porous sound-absorbing wall.
3. The vehicle exhaust device according to claim 1, characterized in that: The device also includes a second muffler: The second muffler is arranged in the shell, between the horizontal plane where the inlet of the device is located and the top of the shell, and is connected to the side wall of the shell.
4. The vehicle exhaust device according to claim 1, characterized in that: The first muffler is not arranged horizontally, a first side of the first muffler is higher than a second side of the first muffler, the first side is connected to the shell; relative to the second side, the first side is closer to the device inlet.
5. The vehicle exhaust device according to claim 4, characterized in that: The other three sides of the first muffler device except the second side are connected to the side wall of the shell.
6. The vehicle exhaust device according to claim 1, characterized in that: The device inlet is located on the first shell side wall, the first device outlet is located on the second shell side wall, and the first shell side wall is opposite to the second shell side wall; The second device outlet is located at the connection between the bottom wall of the shell and the second shell side wall.
7. The vehicle exhaust device according to claim 6, characterized in that: The device further comprises a condensing device, which is arranged on the first device outlet.
8. The vehicle exhaust device according to claim 7, characterized in that: The first device outlet is located at the connection between the shell top wall and the second shell side wall; The first muffler is suspended and fixed to the side wall via a fixing device.
9. The vehicle exhaust device according to claim 1, characterized in that: The bottom wall of the shell is not arranged horizontally, and the third side of the bottom wall is lower than the fourth side of the bottom wall; relative to the fourth side, the third side is closer to the outlet of the second device.
10. A hydrogen fuel cell vehicle, characterized in that: The hydrogen fuel cell vehicle is equipped with a vehicle emission device as described in any one of claims 1-9.