Hydrogen fuel tail discharge water storage silencer integrating water storage and silencing functions

Abstract

The utility model provides a hydrogen fuel tail exhaust water storage silencer integrating water storage and silencing functions, and the tail exhaust internal structure is as follows: a type I cavity dividing plate, a type II cavity dividing plate and a type V cavity dividing plate are transversely arranged in parallel, and the type I cavity dividing plate is obliquely arranged towards an air inlet pipe and is positioned above a through hole of a tail exhaust shell; small holes are formed in the second-type cavity dividing plate and the fifth-type cavity dividing plate; the third type cavity dividing plate, the fourth type cavity dividing plate and the second type cavity dividing plate form a resonant cavity; the air inlet pipe penetrates through the wall of the tail exhaust shell and extends into the position between the linear cavity dividing plate and the wall of the tail exhaust shell. The air outlet pipe penetrates through the wall of the tail exhaust shell, then penetrates through the V-shaped cavity dividing plate and extends into the position between the III-shaped cavity dividing plate and the V-shaped cavity dividing plate; the water storage tank is provided with a water tank body, a water tank cover plate provided with a water tank cover plate through hole is welded to the water tank body, the tail exhaust is fixedly connected to the water storage tank, and the tail exhaust shell through hole is located above the water tank cover plate through hole. The utility model solves the problem of overlarge noise of the tail exhaust of the fuel cell system, and can collect the moisture in the tail exhaust.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen fuel cell engines, and particularly relates to a hydrogen fuel tail exhaust water storage muffler that integrates water storage and muffler functions. Background Art

[0002] With the development of hydrogen fuel cell systems, the market demand for mufflers goes beyond just noise reduction. It also requires consideration of the collection of water generated by the engine's chemical reactions. When a hydrogen fuel cell engine is operating, noise comes from the engine itself, the air noise generated by the air compressor during air compression, and the vortex noise generated by high-velocity air. These three factors are the primary sources of high exhaust noise. When the air compressor is running at full power, the exhaust noise is unbearable, affecting ride comfort. Furthermore, when the engine is operating, chemical reactions produce large amounts of water. In some special areas (such as highways in cold regions and indoor parking lots), this water is not allowed to be discharged at will. It must be collected and discharged at specific times and locations to prevent indoor humidity or icy roads in cold regions.

[0003] Currently, most hydrogen fuel cell tail exhaust muffler research is at a single-function stage. The muffler only has a noise reduction function, and the water tank only has a water storage function. There is no suitable product to meet the specific needs of customers. Therefore, designing a tail exhaust water storage muffler that combines water storage and noise reduction functions has become crucial and urgent. Summary of the Invention

[0004] The utility model provides a hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions, which aims to solve the shortcomings of the existing technology, and can not only solve the problem of excessive noise in the tail exhaust of the fuel cell system, but also collect water in the tail exhaust.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions, characterized by:

[0007] The internal structure of the tail row is:

[0008] The type 1, type 2 and type 5 cavity dividing plates are arranged in parallel in the horizontal direction, and both ends are welded to the inner wall of the tail row shell;

[0009] A tail exhaust housing through hole is provided on the bottom surface of the tail exhaust housing, and a cavity dividing plate is arranged obliquely toward the air inlet pipe and is located above the tail exhaust housing through hole;

[0010] There are small holes on the type II and type V chamber plates;

[0011] The two ends of the longitudinally arranged four-type cavity plate are welded to the small hole area in the middle of the two-type cavity plate and the five-type cavity plate;

[0012] The two ends of the transversely arranged three-type cavity plate are welded to the middle of the four-type cavity plate and the inner wall of the tail row shell;

[0013] The three-type cavity partition plate, the four-type cavity partition plate, and the two-type cavity partition plate form a resonant cavity;

[0014] The air inlet pipe passes through the wall of the tail exhaust shell and extends into a position between the first-type cavity plate and the wall of the tail exhaust shell;

[0015] The air outlet pipe passes through the wall of the tail exhaust shell, then passes through the five-type cavity dividing plate, and extends into the position between the three-type cavity dividing plate and the five-type cavity dividing plate;

[0016] The water tank comprises a water tank body, a water tank cover plate with a water tank cover plate through hole is welded to the water tank body, a tail drain is fixedly connected to the water tank, and the tail drain shell through hole is located above the water tank cover plate through hole.

[0017] A heating water pipe is installed in the water tank body, and a water inlet and a water outlet of the heating water pipe extend out of the water tank body and are connected to the engine water intake pipe and the water return pipe.

[0018] The heating water pipe is welded to the mounting hole of the heating pipe bracket in the water tank body and is fixed. A first spoiler and a second spoiler are welded inside the water tank body, and the heating water pipe passes through the mounting hole of the first spoiler.

[0019] A liquid level sensor is installed in the water tank.

[0020] An electromagnetic water valve and a manual water valve are installed on the water tank body, and the electromagnetic water valve is connected to the vehicle ECU.

[0021] The bottom bracket is welded to the water tank body, and the bottom bracket fixes the water tank to the crossbeam of the vehicle. Beneficial effects

[0022] 1. Applicable to hydrogen fuel cell vehicles, with muffler insertion loss ≥15dB(A), effectively reducing noise;

[0023] 2. It has a wide sound elimination spectrum and has a good effect on eliminating high-frequency noise;

[0024] 3. It not only has a silencer function, but also can store water with a storage capacity of more than 30L, and has a heating function to prevent ice from forming in the water tank in cold areas;

[0025] 4. On the side of the water tank, an electromagnetic water valve and a manual water valve are installed, which can have two modes: vehicle-controlled drainage and manual drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of the tail water storage muffler;

[0027] Figure 2This is an exploded schematic diagram of the tail water storage muffler;

[0028] Figure 3 Schematic diagram of the internal structure of the tail row;

[0029] Figure 4 Schematic diagram of the internal structure of the water tank;

[0030] Figure 5 Schematic diagram of the heating tube structure;

[0031] Figure 6 Schematic diagram of the bottom bracket structure of the water tank;

[0032] Numbers in the figure: 01: tail exhaust cover, 02: air outlet pipe, 03: type five chamber plate, 04: type four chamber plate, 05: type three chamber plate, 06: type two chamber plate, 07: type one chamber plate, 08: air inlet pipe, 09: flange, 10: electromagnetic water valve, 11: water valve base, 12: manual water valve, 13: liquid level sensor base, 14: liquid level sensor, 15: sleeve, 16: first spoiler, 17: water pipe bracket, 18: tail exhaust shell, 181: tail exhaust shell through hole, 19: heating water pipe, 20: bottom bracket, 21: water tank body, 22: second spoiler 2, 23: water tank cover, 231: water tank cover through hole, 300: resonant cavity. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the technical solution of the present invention, the following will briefly introduce the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without inventive work. In order to facilitate understanding of the present invention, the following will be described in more detail with reference to the drawings and specific embodiments.

[0034] like Figure 1 、 Figure 2 As shown:

[0035] The utility model is mainly divided into two parts: the tail exhaust 100 (muffler) and the water tank 200.

[0036] Tail exhaust 100 includes a rectangular tail exhaust housing 18, with an inlet pipe 08 and an outlet pipe 02 at either end. The muffler utilizes the principle of a hysteresis muffler, with the individual chamber plates connected in series and welded horizontally or vertically. These plates are: Type 1 chamber plate 07, Type 2 chamber plate 06, Type 3 chamber plate 05, Type 4 chamber plate 04, and Type 5 chamber plate 03. These five chamber plates divide the interior of tail exhaust 100 into six chambers.

[0037] like Figure 3 As shown:

[0038] Tail exhaust 100 internal structure:

[0039] The tail exhaust cover 01 is installed on the top surface of the tail exhaust housing 18;

[0040] The first-type cavity plate 07 , the second-type cavity plate 06 , and the fifth-type cavity plate 03 are arranged in parallel in a transverse direction, and both ends are welded to the inner wall of the tail row housing 18 .

[0041] A rectangular tail exhaust shell through hole 181 is provided on the bottom surface of the tail exhaust shell 18, and a type of cavity plate 07 is tilted toward the air inlet pipe 08 and is located above the tail exhaust shell through hole 181, and condensed water can be collected by controlling the tilt.

[0042] The left part of the second type cavity plate 06 is provided with a small hole. The fifth type cavity plate 03 is provided with dense small holes, which allow the air flow to pass back and forth to form a loop.

[0043] The two ends of the longitudinally arranged four-type cavity plate 04 are welded to the small hole area in the middle of the two-type cavity plate 06 and the five-type cavity plate 03 .

[0044] The two ends of the transversely arranged three-type cavity plate 05 are welded to the middle of the four-type cavity plate 04 and the inner wall of the tail row housing 18 .

[0045] The third-type cavity plate 05, the fourth-type cavity plate 04, and the second-type cavity plate 06 form a resonant cavity 300 to reduce noise. The size of the resonant cavity 300 can be adjusted by adjusting the positions of the second-type cavity plate 06, the third-type cavity plate 05, and the fourth-type cavity plate 04.

[0046] The five-type cavity plate 03 is provided with dense small holes.

[0047] The air inlet pipe 08 passes through the wall of the tail exhaust shell 18 and extends into a position between a cavity dividing plate 07 and the wall of the tail exhaust shell 18 .

[0048] The air outlet pipe 02 passes through the wall of the tail exhaust housing 18 , and then passes through the five-type cavity dividing plate 02 , and extends into a position between the three-type cavity dividing plate 05 and the five-type cavity dividing plate 05 .

[0049] like Figure 4 As shown:

[0050] Internal structure of water tank 200:

[0051] The water tank cover 23 and the bottom bracket 20 (such as Figure 6 As shown) is fully welded around the water tank body 21, and the bottom bracket 20 is used to fix the water tank 200 to the crossbeam of the entire vehicle.

[0052] A rectangular water tank cover through hole 231 is defined on the water tank cover 23 .

[0053] A heating water pipe 19 (such as a curved extension) is designed in the water tank body 21. Figure 5 (as shown) The water inlet and outlet of the heating water pipe 19 extend out of the water tank body 21 and are connected to the engine water supply and return pipes to heat the collected water to prevent internal freezing. The heating water pipe 19 is fixed through the mounting hole of the heating pipe bracket 17 welded in the water tank body 21 to improve durability and strength. A first spoiler 16 and a second spoiler 22 are welded inside the water tank body 21. The heating water pipe 19 passes through the mounting hole of the first spoiler 16. The first spoiler 16 serves as a guide and support, and the second spoiler 22 serves as a guide.

[0054] A sleeve 15 is welded at the lower left corner of the water tank, and a liquid level sensor 14 is installed in the sleeve 15. The sleeve 15 protects the liquid level sensor 14 from impact, and the liquid level sensor 14 monitors the water level.

[0055] A flange 09 is welded to the side of the water tank body 21, and an electromagnetic water valve 10 is installed on the flange 09. A water valve base 11 is welded to the side of the water tank body 21, and a manual water valve 12 is installed on the water valve base 11. The electromagnetic water valve 10 and the manual water valve 12 are connected to the water tank body 21. The electromagnetic water valve 10 is connected to the vehicle ECU to accurately control drainage at a specific time and position. The manual water valve 12 is used for manual drainage.

[0056] The tail drain 100 is fixedly connected to the water tank 200 , and the through hole 181 of the tail drain housing is located above the through hole 231 of the water tank cover.

[0057] In actual use:

[0058] The discharged water flow and air flow enter the tail exhaust 100 from the air inlet pipe 08, and pass through the type 1 dividing chamber plate 07, the type 2 dividing chamber plate 06, the type 3 dividing chamber plate 05, the type 5 dividing chamber plate 03, and the air outlet pipe 02 in sequence. Under the action of the type 1 dividing chamber plate 07, the water flow hits the inclined plate and, through the action of gravity, flows into the water tank body 21 through the through hole 181 of the tail exhaust shell and the through hole 231 of the water tank cover plate. The type 1 dividing chamber plate 07 plays the role of water separation and noise reduction.

[0059] Part of the airflow directly passes through the small hole of the second type of cavity plate 06 and enters the left space surrounded by the second type of cavity plate 06, the third type of cavity plate 05 and the fifth type of cavity plate 03. Another part of the airflow passes through the small hole of the second type of cavity plate 06 and enters the resonant cavity 300 formed by the third type of cavity plate 05, the fourth type of cavity plate 04, the second type of cavity plate 06 and the fifth type of cavity plate 03, and then comes out from the small hole of the second type of cavity plate 06, and then passes through the small hole of the second type of cavity plate 06 and directly enters the left space surrounded by the second type of cavity plate 06, the third type of cavity plate 05 and the fifth type of cavity plate 03.

[0060] The airflow passes through the small holes of the five-type cavity plate 03 and enters the space between the five-type cavity plate 03 and the wall of the tail exhaust shell 18, then passes through the small holes of the five-type cavity plate 03 and enters the space surrounded by the four-type cavity plate 04, the three-type cavity plate 05, and the five-type cavity plate 03, and finally enters the outlet pipe 02 for discharge.

[0061] This utility model has a wide sound absorption spectrum. Reflection between the cavity plates and changes in acoustic impedance eliminates low- and medium-frequency noise at specific frequencies. The resonant cavity 300 formed also reduces medium- and high-frequency noise. It can also store water, with a capacity of over 30L. The water tank has a heating line connected to the engine's water supply and return pipes to prevent internal freezing. The tailwater tank is externally connected to a solenoid valve and a manual valve, enabling both vehicle-controlled and manual drainage modes.

[0062] This utility model has a wide-band high-frequency noise reduction capability and water storage function, which can not only solve the problem of excessive tail exhaust noise in the fuel cell system, but also collect water from the tail exhaust. The water storage capacity can reach over 30L. It is connected to the engine retrieval water pipe and has a heating function to prevent ice from forming in the water tank in cold areas or in cold weather. The tail water tank is externally connected to the electromagnetic water valve and the manual water valve, which can have two modes of vehicle-controlled drainage and manual drainage to meet the special requirements of customers. It meets the customer's need to drain water at a specific time and location, and can maintain a relatively low exhaust back pressure to avoid excessive power loss in the hydrogen fuel cell system.

Claims

1. A hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions, characterized by: The internal structure of the tail row is: The type 1 cavity plate, type 2 cavity plate and type 5 cavity plate are arranged in parallel in the horizontal direction, and both ends are welded to the inner wall of the tail row shell; A tail exhaust housing through hole is provided on the bottom surface of the tail exhaust housing, and a cavity dividing plate is arranged obliquely toward the air inlet pipe and is located above the tail exhaust housing through hole; There are small holes on the type II and type V chamber plates; The two ends of the longitudinally arranged four-type cavity plate are welded to the small hole area in the middle of the two-type cavity plate and the five-type cavity plate; The two ends of the transversely arranged three-type cavity plate are welded to the middle of the four-type cavity plate and the inner wall of the tail row shell; The three-type cavity partition plate, the four-type cavity partition plate, and the two-type cavity partition plate form a resonant cavity; The air inlet pipe passes through the wall of the tail exhaust shell and extends into a position between the first-type cavity plate and the wall of the tail exhaust shell; The air outlet pipe passes through the wall of the tail exhaust shell, then passes through the five-type cavity dividing plate, and extends into the position between the three-type cavity dividing plate and the five-type cavity dividing plate; The water tank comprises a water tank body, a water tank cover plate with a water tank cover plate through hole is welded to the water tank body, a tail drain is fixedly connected to the water tank, and the tail drain shell through hole is located above the water tank cover plate through hole.

2. A hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions as claimed in claim 1, characterized in that: A heating water pipe is installed in the water tank body, and a water inlet and a water outlet of the heating water pipe extend out of the water tank body and are connected to the engine water intake pipe and the water return pipe.

3. The hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions as claimed in claim 1, characterized in that: The heating water pipe is welded to the mounting hole of the heating pipe bracket in the water tank body and is fixed. A first spoiler and a second spoiler are welded inside the water tank body, and the heating water pipe passes through the mounting hole of the first spoiler.

4. The hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions as claimed in claim 1, characterized in that: A liquid level sensor is installed in the water tank.

5. The hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions as claimed in claim 1, characterized in that: An electromagnetic water valve and a manual water valve are installed on the water tank body, and the electromagnetic water valve is connected to the vehicle ECU.

6. The hydrogen fuel tail exhaust water storage muffler with integrated water storage and muffler functions as claimed in claim 1, characterized in that: The bottom bracket is welded to the water tank body, and the bottom bracket fixes the water tank to the crossbeam of the vehicle.

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