Tail exhaust device, power system and vehicle

Abstract

The utility model relates to a tail exhaust device, a power system and a vehicle, the tail exhaust device comprises a tail exhaust pipeline, a silencing structure, a catalysis structure and a demisting structure, the tail exhaust pipeline comprises an exhaust cavity, the two opposite ends of the exhaust cavity in the tail gas circulation direction are provided with an inlet and an outlet correspondingly, and the silencing structure can be used for reducing noise generated when tail gas is exhausted; the catalytic structure can be used for absorbing hydrogen in tail gas; the demisting structure can be used for removing water vapor in the tail gas. According to the tail exhaust device, the noise reduction structure, the catalysis structure and the demisting structure are all arranged in the tail exhaust pipeline, so that the structures which are arranged in a scattered mode are integrated together, and the vehicle chassis space occupied when all the structures are arranged in a scattered mode is reduced; in addition, the tail exhaust device is provided with a demisting structure, water vapor in the tail exhaust device can be filtered, the water vapor in the tail exhaust device is prevented from forming white smoke, and therefore potential safety hazards caused by the fact that the white smoke shields the sight line of the rear vehicle are eliminated.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle tail exhaust, and in particular, to a tail exhaust device, a power system and a vehicle. Background Art

[0002] Fuel cell vehicles have broad application prospects due to their zero emission and zero pollution characteristics. In related technologies, the components of the tail exhaust device of fuel cell vehicles are relatively scattered, which will occupy more chassis space of the vehicle. In addition, the water vapor generated by the fuel cell vehicle during the reaction process will form white smoke in the tail exhaust pipe when encountering cold air, affecting the field of view of the following vehicles, thus posing a safety hazard. Utility Model Content

[0003] The purpose of the present disclosure is to provide a tail exhaust device, a power system and a vehicle, so as to integrate a silencer structure, a catalytic structure and a demisting structure into the tail exhaust pipe, thereby at least partially solving the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a tail exhaust device, including: a tail exhaust pipeline, including an exhaust chamber, the exhaust chamber is respectively provided with an inlet and an outlet at two opposite ends in the exhaust gas flow direction, a silencer structure for reducing the noise when the exhaust gas is discharged; a catalytic structure for absorbing hydrogen in the exhaust gas; a demisting structure for removing water vapor in the exhaust gas; wherein the silencer structure, the catalytic structure and the demisting structure are arranged in the exhaust chamber in sequence from the inlet to the outlet.

[0005] Optionally, the demisting structure includes a first fan, the axis of the first fan coincides with the central axis of the exhaust chamber in the direction of exhaust gas circulation, and the first fan is located in the exhaust chamber near the inlet; and / or, the demisting structure includes a second fan, the axis of the second fan coincides with the central axis of the exhaust chamber in the direction of exhaust gas circulation, and the second fan is located on the side of the exhaust chamber near the outlet.

[0006] Optionally, the demisting structure includes a second demisting portion; the second demisting portion is constructed as a folded plate bent in the exhaust cavity.

[0007] Optionally, the defogger structure includes a first fan, a second fan, and a second defogger portion located between the first fan and the second fan; the axis of the first fan coincides with the central axis of the exhaust chamber in the exhaust gas circulation direction and the first fan is located in the exhaust chamber near the inlet; the axis of the second fan coincides with the central axis of the exhaust chamber in the exhaust gas circulation direction and the second fan is located on the side of the exhaust chamber near the outlet; the second defogger portion is constructed as a folded plate bent in the exhaust chamber.

[0008] Optionally, the tail exhaust pipe also includes a water storage chamber located at the bottom of the exhaust chamber and communicated with the exhaust chamber; the water storage chamber includes a communication port for communicating with the exhaust chamber to collect water in the exhaust chamber; the water storage chamber also includes a drain port for draining the water in the water storage chamber.

[0009] Optionally, the communication port is arranged close to one side of the outlet, and the drain port is located at the bottom of the water storage cavity.

[0010] Optionally, a temperature sensor and / or a liquid level sensor is further provided in the water storage chamber.

[0011] Optionally, a hydrogen concentration sensor is further provided on the tail exhaust pipe, and the hydrogen concentration sensor is arranged close to the outlet.

[0012] A second aspect of the present disclosure provides a power system including the above-mentioned tail exhaust device.

[0013] A third aspect of the present disclosure provides a vehicle comprising the above-mentioned power system.

[0014] Through the above technical solution, the tail exhaust device disclosed in the present invention arranges the silencer structure, the catalytic structure and the defogger structure in the tail exhaust pipe, so that the structures that are dispersedly arranged are integrated together, reducing the vehicle chassis space occupied by the various structures when they are dispersedly arranged, so that the layout space of the tail exhaust device can be adjusted, and the disassembly, assembly and maintenance of the tail exhaust device are facilitated; in addition, the tail exhaust device is provided with a defogger structure, which can filter the water vapor in the tail exhaust device to prevent the water vapor in the tail exhaust device from forming white smoke, thereby eliminating the safety hazard caused by white smoke blocking the view of the following vehicle.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 It is a schematic structural diagram of the tail exhaust device provided in an embodiment of the present disclosure.

[0018] Description of Reference Numerals

[0019] 1-tail exhaust pipe; 110-exhaust chamber; 1101-inlet; 1102-outlet; 120-water storage chamber; 1201-connecting port; 1202-drain outlet; 2-silencer structure; 3-catalytic structure; 4-demist structure; 410-first fan; 420-second demist section; 4201-folding plate; 430-second fan; 5-temperature sensor; 6-liquid level sensor; 7-hydrogen concentration sensor. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0021] In this disclosure, unless otherwise specified, directional terms such as "inside" and "outside" refer to the "inside" and "outside" relative to the outline of the corresponding component itself. In addition, the terms "first" and "second" used in this disclosure are intended to distinguish one element from another and do not have sequential or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate this disclosure and should not be understood as limiting this disclosure.

[0022] The tail exhaust device in an exemplary embodiment of the present disclosure will be described below with reference to the accompanying drawings.

[0023] refer to Figure 1As shown, the first aspect of the present disclosure provides a tail exhaust device, including a tail exhaust pipe 1, a silencer structure 2, a catalytic structure 3 and a demisting structure 4. The tail exhaust pipe 1 includes an exhaust chamber 110. The exhaust chamber 110 is respectively provided with an inlet 1101 and an outlet 1102 at opposite ends in the exhaust gas flow direction. The silencer structure 2 can be used to reduce the noise when the exhaust gas is discharged; the catalytic structure 3 can be used to absorb hydrogen in the exhaust gas; the demisting structure 4 can be used to remove water vapor in the exhaust gas; wherein the silencer structure 2, the catalytic structure 3 and the demisting structure 4 are arranged in the exhaust chamber 110 from the inlet 1101 to the outlet 1102 in sequence. After the vehicle exhaust gas enters the tail exhaust pipe 1 from the inlet 1101, the volume will be lowered by the silencer structure 2 first, and then enter the catalytic structure 3 to reduce or even eliminate the residual hydrogen in the exhaust gas, reduce the hydrogen concentration, and prevent safety accidents caused by excessive hydrogen content in the exhaust gas. Finally, the exhaust gas will remove the moisture of the water vapor in the exhaust gas when passing through the demisting structure 4, thereby avoiding the formation of white smoke in the tail exhaust pipe 1 when the exhaust gas is discharged from the outlet 1102 and encounters cold air. Based on this, the tail exhaust device disclosed in the present invention arranges the silencer structure 2, the catalytic structure 3 and the demisting structure 4 in the tail exhaust pipe 1, so that the structures that are dispersedly arranged are integrated together, reducing the vehicle chassis space occupied by each structure when it is dispersedly arranged, so that the layout space of the tail exhaust device can be adjusted, which is convenient for the disassembly, assembly and maintenance of the tail exhaust device; and the demisting structure 4 in the tail exhaust device can also filter the moisture in the water vapor of the tail exhaust device to avoid the formation of white smoke when the exhaust gas is discharged from the tail exhaust device, thereby eliminating the safety hazard caused by white smoke blocking the sight of the following vehicle.

[0024] Exemplarily, the above-mentioned silencer structure 2 may include a silencer chamber and a silencer and / or silencer cotton arranged in the silencer chamber, thereby reducing the noise generated when the tail exhaust system device is working; the catalytic structure 3 may include a catalytic chamber and a metal catalyst arranged in the catalytic chamber, thereby consuming hydrogen in the exhaust gas, reducing the hydrogen content in the exhaust gas, and ensuring the safety of the tail exhaust device.

[0025] In some embodiments of the present disclosure, the demisting structure 4 can have multiple settings. For example, the demisting structure 4 may include a first fan 410, the axis of the first fan 410 coincides with the central axis of the exhaust chamber 110 in the exhaust gas circulation direction, and the first fan 410 is located in the exhaust chamber 110 near the inlet 1101; when the exhaust gas passes through the first fan 410, the water vapor therein will contact the rotating first fan 410 and adhere to the blades of the first fan 410 to form small water droplets, thereby, the rotating blades can make the water vapor attached to the blades move toward the outer peripheral side of the tail exhaust pipe 1 under the action of centrifugal force and gather, thereby eliminating at least a part of the moisture of the water vapor in the exhaust gas, achieving the effect of reducing or even eliminating white smoke; or, the demisting structure 4 may include a second fan 430, the axis of the second fan 430 coincides with the central axis of the exhaust chamber 110 in the exhaust gas circulation direction, and the second fan 430 is located on the side of the exhaust chamber 110 near the outlet 1102. The function of the second fan 430 is the same as that of the first fan 410 , and since it is disposed close to the outlet 1102 , it can also help exhaust gas to be discharged from the exhaust chamber 110 , thereby ensuring the normal operation of the exhaust device.

[0026] In addition, the demisting structure 4 may include the first fan 410 and the second fan 430 . Thus, under the joint action of the first fan 410 and the second fan 430 , the working efficiency of the demisting structure 4 may be improved.

[0027] Alternatively, the demisting structure 4 may further include a second demisting portion 420; the second demisting portion 420 is constructed as a folded plate 4201 bent in the exhaust chamber 110, so that the exhaust gas will be in full contact with the surface of the folded plate 4201 when flowing in the tail exhaust pipe 1, so that the moisture in the water vapor can be gathered into small water droplets on the surface of the folded plate 4201, thereby collecting the moisture in the exhaust gas, thereby eliminating at least a portion of the moisture in the water vapor in the exhaust gas, and achieving the effect of reducing or even eliminating white smoke.

[0028] Alternatively, the demisting structure 4 may include a first fan 410, a second fan 430 and a second demisting section 420 located between the first fan 410 and the second fan 430, that is, the three are arranged in the exhaust chamber 110 in sequence from the inlet 1101 to the outlet 1102 to maximize the effect of removing moisture from the exhaust gas. Of course, one or two of the three can also be arranged in the exhaust chamber 110 according to the actual use environment and the size of the tail exhaust pipe 1.

[0029] In an embodiment of the present disclosure, the tail exhaust pipe 1 also includes a water storage chamber 120 located at the bottom of the exhaust chamber 110 and communicated with the exhaust chamber; the water storage chamber 120 includes a communication port 1201 for communicating with the exhaust chamber 110 to collect water in the exhaust chamber 110; the water storage chamber 120 also includes a drain port 1202 for draining the water in the water storage chamber 120. After being filtered by the demisting structure 4, the moisture in the water vapor in the exhaust gas will gather in the exhaust chamber 110 and flow to the bottom of the exhaust chamber 110. As a result, the gathered moisture can enter the bottom of the water storage chamber 120 through the connecting port 1201 under the action of gravity and be stored in the water storage chamber 120. In addition, since there is a certain amount of water in the exhaust gas itself, the water storage chamber 120 can also store this part of the water to prevent this water from being directly discharged from the outlet 1102 of the tail exhaust pipe 1, causing ice on the road surface when the temperature is low, affecting driving safety, and the water storage chamber 120 can be discharged out of the vehicle through the drain port 1202 or recycled under appropriate circumstances; in addition, the water storage chamber 120 can be located at the bottom of the exhaust chamber 110, that is, it is arranged adjacent to the exhaust chamber 110, so the moisture stored in the water storage chamber 120 can also play a role in heat exchange with the exhaust chamber 110, ensuring that the temperature in the exhaust chamber 110 is maintained within the normal operating temperature.

[0030] The communication port 1201 can be provided near the outlet 1102, and the drain port 1202 can be located at the bottom of the water storage chamber 120. The communication port 1201 being provided near the outlet 1102 can prevent water accumulated near the outlet 1102 of the exhaust chamber 110 from bypassing the communication port 1201 and being discharged directly from the outlet 1102. The location of the drain port 1202 at the bottom of the water storage chamber 120 also allows the water in the water storage chamber 120 to be drained by gravity, eliminating the need for additional components and simplifying the structure of the tail drain device.

[0031] In an embodiment of the present disclosure, a temperature sensor 5 and / or a liquid level sensor 6 are further provided in the water storage chamber 120. The temperature sensor 5 can detect the temperature of the water in the water storage chamber 120, and the liquid level sensor 6 can detect the height of the water level in the water storage chamber 120. Thus, the water storage condition in the water storage chamber 120 can be determined, so that the water in the water storage chamber 120 can be discharged when appropriate.

[0032] In addition, a hydrogen concentration sensor 7 may be provided on the tail exhaust pipe 1, and the hydrogen concentration sensor 7 is provided near the outlet 1102. Since an excessively high hydrogen concentration in the tail gas may cause an explosion upon contact with an open flame, thereby posing a safety hazard, the hydrogen concentration sensor 7 provided in the tail exhaust pipe 1 can detect the hydrogen concentration of the tail gas in the tail exhaust pipe 1 to ensure that the hydrogen concentration in the tail gas is maintained within a safe range.

[0033] The second aspect of the present disclosure provides a power system including the above-mentioned tail exhaust device. In addition, if it is necessary to explain, the power system has all the beneficial effects of the above-mentioned tail exhaust device, which will not be repeated in this disclosure.

[0034] The third aspect of the present disclosure provides a vehicle including the above-mentioned power system. In addition, if necessary, the vehicle has all the beneficial effects of the above-mentioned power system, which will not be further described in this disclosure.

[0035] In summary, the present disclosure exemplarily illustrates the working process of the tail exhaust device.

[0036] The tail exhaust device disclosed in the present invention integrates the silencer structure 2, the catalytic structure 3 and the demisting structure 4 into the tail exhaust pipe 1, so that after the exhaust gas enters the tail exhaust pipe 1 from the inlet 1101, it will first pass through the silencer structure 2. The silencer cotton or silencer and other structures in the silencer structure 2 will reduce the noise generated by the exhaust gas. Then the exhaust gas enters the catalytic structure 3. The catalyst in the catalytic structure 3 will filter and absorb hydrogen, thereby reducing the hydrogen content in the exhaust gas and avoiding safety hazards caused by excessive hydrogen content in the exhaust gas. The exhaust gas passing through the catalytic structure 3 will enter the demisting structure 4. The water vapor in the exhaust gas will adhere to the surface of the rotating blades of the first fan 410 and gather to form small water droplets. During the rotation of the fan blades, the small water droplets on its surface will flow toward the inner wall of the tail exhaust pipe 1 under the action of centrifugal force, and finally flow along the inner wall of the tail exhaust pipe 1 to the water storage chamber 120, and through the first fan 4 When the exhaust gas of 10 passes through the folding plate 4201, due to the bent setting of the folding plate 4201, at least part of the water vapor in the exhaust gas will adhere to the surface of the folding plate 4201 and form small water droplets. After gathering to a certain extent, the small water droplets will slide down from the surface of the folding plate 4201 and eventually flow into the water storage chamber 120. In the process of the first fan 410 and the folding plate 4201 eliminating at least part of the water vapor in the exhaust gas, the second fan 430 is also continuously rotating. On the one hand, this can play the same demisting role as the first fan 410, and on the other hand, it can also help the exhaust gas to be quickly discharged from the tail exhaust pipe 1. In addition, the original moisture in the exhaust gas can also flow into the water storage chamber 120 from the connecting port 1201 during this process; the temperature sensor 5 and the liquid level sensor 6 can detect the state of the water in the water storage chamber 120, so that the water storage chamber 120 can discharge it when appropriate. Based on this, the tail exhaust device disclosed in the present invention arranges the silencer structure 2, the catalytic structure 3 and the defogger structure 4 in the tail exhaust pipe 1, so that the structures that are dispersedly arranged are integrated together, reducing the vehicle chassis space occupied by each structure when it is dispersedly arranged, so that the layout space of the tail exhaust device can be adjusted, and the disassembly, assembly and maintenance of the tail exhaust device are facilitated; and the defogger structure 4 in the tail exhaust device can also filter the moisture in the water vapor of the tail exhaust device to avoid the formation of white smoke when the exhaust gas is discharged from the tail exhaust device, thereby eliminating the safety hazard caused by the white smoke blocking the view of the following vehicle.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A tail exhaust device, characterized in that: include: The tail exhaust pipe includes an exhaust chamber, wherein the exhaust chamber is provided with an inlet and an outlet at opposite ends in the exhaust gas flow direction. A silencer structure for reducing the noise when the exhaust gas is discharged; a catalytic structure for absorbing hydrogen from the tail gas; a demisting structure for removing water vapor from the exhaust gas; Wherein, the muffler structure, the catalytic structure and the demisting structure are sequentially arranged in the exhaust chamber from the inlet to the outlet.

2. The tail exhaust device according to claim 1, characterized in that: The demisting structure includes a first fan, the axis of the first fan coincides with the central axis of the exhaust chamber in the exhaust gas flow direction, and the first fan is located in the exhaust chamber near the inlet; and / or, The demisting structure includes a second fan, the axis of the second fan coincides with the central axis of the exhaust chamber in the exhaust gas flow direction, and the second fan is located on a side of the exhaust chamber close to the outlet.

3. The tail exhaust device according to claim 1, characterized in that: The demisting structure includes a second demisting portion; The second demisting portion is constructed as a folded plate that is bent in the exhaust chamber.

4. The tail exhaust device according to claim 1, characterized in that: The demisting structure includes a first fan, a second fan, and a second demisting portion located between the first fan and the second fan; The axis of the first fan coincides with the central axis of the exhaust chamber in the exhaust gas flow direction, and the first fan is located in the exhaust chamber near the inlet; The axis of the second fan coincides with the central axis of the exhaust chamber in the exhaust gas flow direction, and the second fan is located on a side of the exhaust chamber close to the outlet; The second demisting portion is constructed as a folded plate that is bent in the exhaust chamber.

5. The tail exhaust device according to claim 1, characterized in that: The tail exhaust pipeline further includes a water storage chamber located at the bottom of the exhaust chamber and communicating with the exhaust chamber; The water storage chamber includes a communication port for communicating with the exhaust chamber to collect water in the exhaust chamber; The water storage chamber also includes a drain port for draining the water in the water storage chamber.

6. The tail exhaust device according to claim 5, characterized in that: The communication port is arranged close to one side of the outlet, and the drain port is located at the bottom of the water storage cavity.

7. The tail exhaust device according to claim 6, characterized in that: A temperature sensor and / or a liquid level sensor is also provided in the water storage cavity.

8. The tail exhaust device according to any one of claims 1 to 7, characterized in that: The tail exhaust pipe is further provided with a hydrogen concentration sensor, which is arranged close to the outlet.

9. A power system, characterized in that: The invention comprises the tail exhaust device according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Including the power system described in claim 9.

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