An exhaust arrangement for an amphibious vehicle
The exhaust system, which combines a turbo fan and a smart bearing, solves the exhaust problem of amphibious vehicles when driving on water, effectively cooling and discharging exhaust gases, and improving vehicle speed and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI EMERGENCY IND TECH RES INST CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-31
AI Technical Summary
When amphibious vehicles travel on water, their exhaust systems suffer from problems such as overheating of components, high resistance to exhaust gas discharge, low exhaust efficiency, and water leakage, which affect the vehicle's speed and stability.
The system employs a combination structure consisting of a turbine fan, intelligent bearings, first and second pipe section assemblies, and an exhaust system. The turbine fan provides initial cooling, the intelligent bearings control the exhaust gas flow rate, the multi-layer pipe section assemblies gradually cool the gas, and finally the exhaust system discharges the exhaust gas, achieving effective cooling and emission of the exhaust gas.
It improves exhaust gas emission efficiency, reduces driving resistance, enhances vehicle speed and stability in water, and reduces the risk of water leakage.
Smart Images
Figure CN120925956B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of amphibious vehicle technology, and more particularly to an exhaust system for an amphibious vehicle. Background Technology
[0002] Amphibious vehicles are widely used as multi-purpose transportation tools. When an amphibious vehicle is traveling on water, its wheels are usually lifted and stored by a retractable suspension system to prevent direct contact with the water. The entire vehicle uses a boat-like structure at the bottom to reduce drag and facilitate navigation. However, the chassis structure of these amphibious vehicles is generally designed for specific vehicles and is not suitable for modification of standard vehicles.
[0003] The exhaust system is installed at the rear or bottom of amphibious vehicles to guide exhaust gases away from the main vehicle structure and prevent water ingress. When amphibious vehicles consume excessive energy for propulsion, they produce a large amount of exhaust gas. Furthermore, when amphibious vehicles are wading through water, the exhaust system suffers from overheating components and excessive exhaust resistance, leading to increased exhaust gas temperature and impacting exhaust efficiency. Additionally, when amphibious vehicles float in water, the wheels and part of the vehicle body are submerged; the heavier the vehicle, the deeper it sinks, necessitating consideration of exhaust system leakage. Therefore, for a standard vehicle to achieve amphibious capability, an exhaust system is required to address these issues. Summary of the Invention
[0004] Based on the above, the purpose of this invention is to provide an exhaust device for amphibious vehicles that cools exhaust gases, improves exhaust efficiency, increases the water travel speed of amphibious vehicles, and reduces resistance.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An exhaust system for an amphibious vehicle includes: a turbine fan with a rotating shaft, at least one smart bearing, a first pipe section assembly, a second pipe section assembly, and an exhaust component;
[0007] The first pipe section assembly includes a first outer pipe section and a first inner pipe section. The first inner pipe section is located inside the first outer pipe section. The intelligent bearing is located inside the first outer pipe section and is installed at the opening of the first inner pipe section. The rotating shaft of the turbine fan is connected to the inner side of the opening of the first inner pipe section near the exhaust gas inflow end.
[0008] The second pipe section assembly includes a second inner pipe section and a second outer pipe section. Along the direction of exhaust gas flow, the diameters of the second inner pipe section and the second outer pipe section gradually increase. A first part of the second inner pipe section is located inside the second outer pipe section, and a second part of the second inner pipe section is located inside the first outer pipe section. The second outer pipe section is connected to the first outer pipe section, and a portion of the first inner pipe section is located inside the second part of the second inner pipe section. The first inner pipe section is sequentially connected to the second inner pipe section and the second outer pipe section.
[0009] The exhaust component is connected to the larger diameter end of the second outer pipe section;
[0010] Multiple air outlet holes are provided on the first outer pipe section, the first inner pipe section, the second inner pipe section and the second outer pipe section.
[0011] A preferred embodiment of the exhaust system for an amphibious vehicle includes two intelligent bearings, each located at one of the openings at the two ends of the first inner pipe section.
[0012] As a preferred embodiment of the exhaust system for an amphibious vehicle, the intelligent bearing includes an outer bearing ring, an inner bearing ring, and a bearing core. The bearing core is located between the outer bearing ring and the inner bearing ring. The inner bearing ring is connected to the outside of the opening of the first inner pipe section, and the outer bearing ring is connected to the inside of the first outer pipe section.
[0013] As a preferred embodiment of the exhaust system for amphibious vehicles, the intelligent bearing includes one of NTN thermal compensation bearings and SKF intelligent bearings.
[0014] As a preferred embodiment of the exhaust device for an amphibious vehicle, multiple rows of exhaust holes are evenly spaced along the axial direction of the first outer pipe section and the first inner pipe section, with each row of exhaust holes having multiple holes spaced apart.
[0015] As a preferred embodiment of the exhaust device for an amphibious vehicle, multiple rows of exhaust holes are evenly spaced along the axial direction of the second inner pipe section and the second outer pipe section, with each row of exhaust holes having multiple holes spaced apart.
[0016] As a preferred embodiment of the exhaust device for an amphibious vehicle, the exhaust component is cylindrical and has multiple exhaust holes along its axial direction.
[0017] The beneficial effects of this invention are as follows:
[0018] This invention provides an exhaust system for an amphibious vehicle. The exhaust system includes a turbine fan with a rotating shaft, at least one intelligent bearing, a first pipe section assembly, a second pipe section assembly, and an exhaust component. When exhaust gas from the amphibious vehicle enters the exhaust system, the exhaust gas first enters the turbine fan with the rotating shaft, causing the turbine fan to rotate and increasing the exhaust gas flow rate, thereby initially cooling the exhaust gas and increasing the exhaust gas emission rate. Under the action of the turbine fan's rotating shaft, the turbine fan drives the first inner pipe section to rotate. Since the intelligent bearing is located inside the first outer pipe section and installed at the opening of the first inner pipe section, the exhaust gas enters the first pipe section assembly through the turbine fan. The first inner pipe section drives the first outer pipe section to rotate through the intelligent bearing. The intelligent bearing expands due to heat, controlling the relative rotational position of the first outer pipe section and the first inner pipe section, thereby controlling... The exhaust gas exiting from the outlet of the first pipe section assembly has a certain flow rate. Part of the exhaust gas passes sequentially through the outlets of the first outer and inner pipe sections, achieving further cooling. The remaining exhaust gas enters the second pipe section assembly after passing through the first pipe section assembly. Due to the gradually increasing diameter of the second inner and outer pipe sections along the exhaust gas flow direction, the exhaust gas velocity decreases as it passes through the second pipe section assembly, further cooling the exhaust gas. Part of the exhaust gas entering the second pipe section assembly is discharged through the exhaust system, while the remaining part passes sequentially through the outlets of the second inner and outer pipe sections, achieving further cooling during discharge. The exhaust gas flowing through the exhaust system gradually decreases in temperature and velocity during the discharge process, achieving effective exhaust gas emission, reducing the amphibious vehicle's driving resistance, and increasing its driving speed. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.
[0020] Figure 1 This is an exploded view of the exhaust device provided in an embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the exhaust device provided in an embodiment of the present invention;
[0022] Figure 3 This is a cross-sectional view of the exhaust device provided in an embodiment of the present invention;
[0023] Figure 4 This is a schematic diagram of the waterproof component structure of the exhaust device provided in an embodiment of the present invention.
[0024] In the picture:
[0025] 1. Turbine fan; 2. Intelligent bearing; 3. First pipe section assembly; 31. First inner pipe section; 32. First outer pipe section; 4. Second pipe section assembly; 41. Second inner pipe section; 42. Second outer pipe section; 5. Exhaust components.
[0026] 100. Air outlet; 101. Connecting pipe; 102. Spiral check valve. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning.
[0031] like Figures 1 to 3As shown, this embodiment provides an exhaust device for an amphibious vehicle, including a turbine fan 1 with a rotating shaft, at least one intelligent bearing 2, a first pipe section assembly 3, a second pipe section assembly 4, and an exhaust component 5; the first pipe section assembly 3 includes a first outer pipe section 32 and a first inner pipe section 31, the first inner pipe section 31 being located inside the first outer pipe section 32, the intelligent bearing 2 being located inside the first outer pipe section 32 and installed at the opening of the first inner pipe section 31, and the rotating shaft of the turbine fan 1 being connected to the inner side of the opening of the first inner pipe section 31 near the end where exhaust gas flows in; the second pipe section assembly 4 includes a second inner pipe section 41 and a second outer pipe section 42, flowing along the exhaust gas flow. In the direction, the diameters of the second inner pipe section 41 and the second outer pipe section 42 gradually increase. The first part of the second inner pipe section 41 is located inside the second outer pipe section 42, and the second part of the second inner pipe section 41 is located inside the first outer pipe section 32. The second outer pipe section 42 is connected to the first outer pipe section 32, and a part of the first inner pipe section 31 is located inside the second part of the second inner pipe section 41. The first inner pipe section 31, the second inner pipe section 41, and the second outer pipe section 42 are connected in sequence. The exhaust component 5 is connected to the end of the second outer pipe section 42 with the larger diameter. Multiple air outlet holes 100 are provided on the first outer pipe section 32, the first inner pipe section 31, the second inner pipe section 41, and the second outer pipe section 42. When the exhaust gas generated by the amphibious vehicle enters the exhaust system, it first enters the turbine fan 1 equipped with a rotating shaft, driving the turbine fan 1 to rotate and increasing the exhaust gas flow rate, thereby initially cooling the exhaust gas and increasing the exhaust gas emission rate. Under the action of the rotating shaft of the turbine fan 1, the turbine fan 1 drives the first inner pipe section 31 to rotate. Since the intelligent bearing 2 is located inside the first outer pipe section 32 and installed at the opening of the first inner pipe section 31, the exhaust gas enters the first pipe section assembly 3 through the turbine fan 1. The first inner pipe section 31 drives the first outer pipe section 32 to rotate through the intelligent bearing 2. The intelligent bearing 2 expands due to heat, controlling the relative rotational position of the first outer pipe section 32 and the first inner pipe section 31, thereby controlling the exhaust gas. The exhaust gas exiting from the outlet 100 of the first pipe section assembly 3 experiences a partial cooling effect as it passes through the outlets 100 of the first outer pipe section 32 and the first inner pipe section 31. The remaining exhaust gas, after passing through the first pipe section assembly 3, enters the second pipe section assembly 4. Due to the gradually increasing diameter of the second inner pipe section 41 and the second outer pipe section 42 along the exhaust gas flow direction, the exhaust gas velocity decreases as it passes through the second pipe section assembly 4, further cooling the exhaust gas. Part of the exhaust gas entering the second pipe section assembly 4 enters the exhaust component 5 for discharge, while the other part passes through the outlets 100 of the second inner pipe section 41 and the second outer pipe section 42, achieving further cooling during discharge. The exhaust gas flowing through the exhaust device experiences a gradual decrease in temperature and velocity during discharge, achieving effective exhaust emission, reducing the amphibious vehicle's driving resistance, and increasing its speed.
[0032] Preferably, the exhaust system of the amphibious vehicle includes two intelligent bearings 2, which are located at the openings at both ends of the first inner pipe section 31. The intelligent bearings 2 can expand and contract according to the temperature of the exhaust gas, thereby controlling the relative rotational speed and position of the first outer pipe section 32 and the first inner pipe section 31, and thus controlling the relative angle of the exhaust outlet 100 of the first outer pipe section 32 and the first inner pipe section 31, thereby controlling the exhaust gas flow rate from the exhaust outlet 100. Of course, in other embodiments, multiple intelligent bearings 2 can be provided to simultaneously control the relative rotation of the first outer pipe section 32 and the first inner pipe section 31. The specific number is determined according to actual conditions, as long as it meets the exhaust gas emission requirements.
[0033] Specifically, the intelligent bearing 2 includes an outer bearing ring, an inner bearing ring, and a bearing core. The bearing core is located between the outer and inner bearing rings. The inner bearing ring is connected to the outer side of the opening of the first inner tube section 31, and the outer bearing ring is connected to the inner side of the first outer tube section 32. The outer and inner bearing rings rotate relative to each other via the bearing core. Since the intelligent bearing 2 is a thermosensitive bearing, it expands and contracts the outer and inner bearing rings according to temperature changes, adjusting the gap between the outer and inner bearing rings and the bearing core. As the exhaust temperature increases, the thermal compensation material in the bearing expands, causing the gap between the inner and outer rings to decrease, controlling the relative rotation speed of the outer and inner bearing rings, thereby adjusting the relative rotation of the first outer tube section 32 and the first inner tube section 31.
[0034] More specifically, the intelligent bearing 2 includes either the NTN thermal compensation bearing or the SKF intelligent bearing 2, which can fulfill the function of a thermal bearing.
[0035] Furthermore, along the axial direction of the first outer pipe section 32 and the first inner pipe section 31, multiple rows of air outlet holes 100 are evenly spaced on the first outer pipe section 32 and the first inner pipe section 31. Each row of air outlet holes 100 has multiple rows spaced apart, and the number of rows of air outlet holes 100 on the first outer pipe section 32 and the first inner pipe section 31 is the same, ensuring pressure balance. The gas pressure is evenly distributed through the air outlet holes 100 on the first outer pipe section 32 and the first inner pipe section 31, maintaining optimal flow of exhaust gas. This prevents the formation of differential pressure zones that affect cooling efficiency and component shelf life, and avoids mechanical vibration caused by asymmetric gas flow and mass. This is used to adjust cooling performance and mechanical stability, achieving optimal system performance. For example, when there are 15 rows of air outlet holes 100 on the first outer pipe section 32, there are also 15 rows of air outlet holes 100 on the first inner pipe section 31. The first outer pipe section 32 has an outlet 100, which is the first outlet, and the first inner pipe section 31 has a second outlet. The first inner pipe section 31 and the first outer pipe section 32 rotate relative to each other through the intelligent bearing 2. When the first outlet and the second outlet are rotated to be fully aligned, the central axis of the first outlet coincides with the central axis of the second outlet, which is the maximum emission rate of the exhaust gas. When the first outlet and the second outlet are rotated to be partially aligned, the central axis of the first outlet and the central axis of the second outlet are misaligned, which reduces the emission rate of the exhaust gas. Therefore, by adjusting the alignment area of the outlet 100 of the first outer pipe section 32 and the outlet 100 of the first inner pipe section 31, the emission rate of the exhaust gas can be adjusted, thereby realizing the intelligent adjustment of the exhaust gas emission flow rate.
[0036] Furthermore, along the axial direction of the second inner pipe section 41 and the second outer pipe section 42, multiple rows of air passage holes 100 are evenly spaced on the second outer pipe section 42 and the second inner pipe section 41, with multiple air passage holes 100 spaced apart in each row. This ensures that the exhaust gas is discharged evenly. The multiple air passage holes 100 are used to guide the gas, reduce airflow blockage, and gradually reduce the gas flow velocity in the exhaust device, thus optimizing the gas discharge.
[0037] Specifically, the exhaust component 5 is cylindrical, and along its axial direction, it is provided with multiple exhaust ports 100. The multiple exhaust ports 100 are designed to facilitate the emission of exhaust gas, ensuring its eventual discharge. Furthermore, a check valve is installed at the outlet of the exhaust component 5 to prevent water from flowing back into the exhaust system from the outlet.
[0038] Optionally, such as Figure 4As shown, the exhaust system of the amphibious vehicle also includes a waterproof component, which includes a connecting pipe 101 and a spiral check valve 102. Multiple connecting pipes 101 are installed between the first outer pipe section 32 and the first inner pipe section 31, and between the second inner pipe section 41 and the second outer pipe section 42. Each end of the connecting pipe 101 is connected to two corresponding air outlet holes 100. A spiral check valve 102 is installed at the end of the connecting pipe 101 closest to the first outer pipe section 32 or the second outer pipe section 42. The opening and closing of the spiral check valve 102 can be adjusted according to the exhaust pressure outside the first outer pipe section 32 and the second outer pipe section 42. When there is exhaust pressure, the spiral check valve 102 opens to facilitate exhaust gas discharge; when the exhaust pressure stops, the spiral check valve 102 closes to prevent water leakage. A silicone membrane is also provided to automatically seal when exhaust gas flow stops. Preferably, the spiral check valve has an inclination angle of 35°, which helps to discharge water by gravity, thereby enhancing the backflow prevention function. The specific angle is determined according to the actual situation.
[0039] Furthermore, the first inner pipe section 31 is made of heat-resistant steel such as stainless steel 310, which has excellent high-temperature resistance and prevents damage to the first inner pipe section 31 when exhaust gas passes through it. The first outer pipe section 32, the second outer pipe section 42, the second inner pipe section 41, and the exhaust component 5 are made of corrosion-resistant polymer material to prevent the first outer pipe section 32 and the second outer pipe section 42 from being corroded or damaged by seawater or other harsh environments. The above-mentioned raw materials have a simple structure, which can maintain the stability of the vehicle without significantly increasing the vehicle weight and ensure operational safety.
[0040] Furthermore, the outer walls of the first pipe section assembly 3, the second pipe section assembly 4, and the exhaust component 5 are all provided with a waterproof coating to prevent water from entering the exhaust device.
[0041] Preferably, in the exhaust system of the amphibious vehicle, all components are connected using screws, metal joints, or special welded connection components, depending on the actual situation.
[0042] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.
Claims
1. An exhaust system for an amphibious vehicle, characterized in that, include: The device includes a turbine fan with a rotating shaft, at least one smart bearing, a first pipe section assembly, a second pipe section assembly, and an exhaust component; The first pipe section assembly includes a first outer pipe section and a first inner pipe section. The first inner pipe section is located inside the first outer pipe section. The intelligent bearing is located inside the first outer pipe section and is installed at the opening of the first inner pipe section. The rotating shaft of the turbine fan is connected to the inner side of the opening of the first inner pipe section near the exhaust gas inflow end. The second pipe section assembly includes a second inner pipe section and a second outer pipe section. Along the direction of exhaust gas flow, the diameters of the second inner pipe section and the second outer pipe section gradually increase. A first part of the second inner pipe section is located inside the second outer pipe section, and a second part of the second inner pipe section is located inside the first outer pipe section. The second outer pipe section is connected to the first outer pipe section, and a portion of the first inner pipe section is located inside the second part of the second inner pipe section. The first inner pipe section is sequentially connected to the second inner pipe section and the second outer pipe section. The exhaust component is connected to the larger diameter end of the second outer pipe section; It also includes a waterproof component, which comprises a connecting pipe and a spiral check valve. Multiple connecting pipes are provided between the first outer pipe section and the first inner pipe section, and between the second inner pipe section and the second outer pipe section. Each connecting pipe has multiple corresponding air outlet holes at both ends. A spiral check valve is provided at one end of each connecting pipe near the first outer pipe section or the second outer pipe section. The opening or closing of the spiral check valve can be adjusted according to the exhaust pressure outside the first outer pipe section and the second outer pipe section. When there is exhaust pressure, the spiral check valve opens; when the exhaust pressure stops, the spiral check valve closes. A silicone membrane is also provided to automatically seal when the exhaust gas stops flowing.
2. The exhaust system for an amphibious vehicle according to claim 1, characterized in that, It includes two intelligent bearings, which are located at the two openings at the two ends of the first inner tube section.
3. The exhaust system for an amphibious vehicle according to claim 2, characterized in that, The intelligent bearing includes an outer bearing ring, an inner bearing ring, and a bearing core. The bearing core is located between the outer bearing ring and the inner bearing ring. The inner bearing ring is connected to the outside of the opening of the first inner tube section, and the outer bearing ring is connected to the inside of the first outer tube section.
4. The exhaust system of the amphibious vehicle according to claim 1, characterized in that, The intelligent bearing includes one of NTN thermal compensation bearings and SKF intelligent bearings.
5. The exhaust system for an amphibious vehicle according to claim 1, characterized in that, Along the axial direction of the first outer pipe section and the first inner pipe section, multiple rows of air outlet holes are evenly spaced on the first outer pipe section and the first inner pipe section, and multiple air outlet holes are spaced apart in each row.
6. The exhaust system for an amphibious vehicle according to claim 1, characterized in that, Along the axial direction of the second inner pipe section and the second outer pipe section, multiple rows of air outlet holes are evenly spaced on the second outer pipe section and the second inner pipe section, and multiple air outlet holes are spaced apart in each row.
7. The exhaust system for an amphibious vehicle according to claim 1, characterized in that, The exhaust component is cylindrical and has multiple exhaust holes along its axial direction.