Silencer, exhaust device with same and vehicle

Abstract

The utility model provides a silencer, an exhaust device with the silencer and a vehicle, the silencer is applied to the vehicle, and the silencer comprises a shell, a silencer body, an air inlet pipe, an air outlet pipe and an air outlet pipe, the first heat insulation part is arranged on the shell; and the first heat insulation piece is fixed with the shell through the fixing piece. According to the silencer, the fixing piece is arranged and can fix the heat insulation piece, so that heat can be prevented from being dissipated to the outer side of the silencer from the falling position of the heat insulation piece, and devices around the silencer can be effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle manufacturing technical field especially, and it is a kind of muffler and exhaust device and vehicle with it. BACKGROUND

[0002] The muffler in prior art, to isolate the heat in tail gas, heat insulation part is covered with shell to prevent the heat in tail gas from emitting to the outside of silencer, so as to protect the device around silencer, however, in the process of vehicle operation, the connection between heat insulation part and shell is unstable, thus easily leading to heat insulation part deformation from shell, so as to lead to heat emission to the outside of silencer. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a kind of muffler, the muffler can stably fix heat insulation part.

[0004] The utility model further provides an exhaust device with the above muffler.

[0005] The utility model further provides a kind of vehicle with the above exhaust device.

[0006] According to the muffler of the first aspect embodiment of the utility model, it is applied to vehicle, the muffler includes: shell, the shell is limited to silencing cavity in;First heat insulation part, the first heat insulation part is located in the shell;Fixing piece, the first heat insulation part is fixed with the shell by the fixing piece.

[0007] According to the muffler of the utility model, setting fixing piece, fixing piece can be fixed to heat insulation part, so as to avoid heat emission to the outside of silencer from heat insulation part drop-off position, and then can effectively protect the device around silencer.

[0008] According to some embodiments of the utility model, the fixing piece includes first fixed part and second fixed part, the first fixed part is arranged on the shell, and the first fixed part cooperates with the second fixed part to fix the first heat insulation part with the shell.

[0009] According to some optional embodiments of the utility model, first through-hole is provided on the first heat insulation part, and the second fixed part is connected with the first fixed part through the first through-hole.

[0010] According to some embodiments of the utility model, part of shell wall of the shell is recessed to form first recess along the thickness direction of the shell wall, and the first fixed part is arranged in the first recess.

[0011] According to some embodiments of the utility model, the first fixed part is screw-connected with the second fixed part.

[0012] According to some embodiments of the present application, the number of the first fixing parts is multiple, and the first fixing parts are distributed on the shell at intervals.

[0013] According to some embodiments of the present application, a first adhesive part is arranged between the first heat insulation part and the shell, and the first heat insulation part is connected to the shell by the first adhesive part.

[0014] According to some embodiments of the present application, the first heat insulation part is arranged on the inner side and / or the outer side of the shell.

[0015] According to some embodiments of the present application, the first heat insulation part comprises an aerogel layer and a glass fiber layer, and the aerogel layer and the glass fiber layer are arranged in a laminated manner along the thickness direction of the heat insulation part.

[0016] According to some optional embodiments of the present application, the thickness of the glass fiber layer is greater than or equal to the thickness of the aerogel layer.

[0017] According to some embodiments of the present application, the ratio of the thickness of the glass fiber layer to the thickness of the aerogel layer is greater than 1 and less than or equal to 3.

[0018] According to some embodiments of the present application, the thickness of the first heat insulation part is greater than or equal to 12 mm and less than or equal to 15 mm.

[0019] According to some embodiments of the present application, the muffler further comprises a second heat insulation part, the second heat insulation part defines a cavity, the shell and the first heat insulation part are arranged in the cavity, and the second heat insulation part is fixed with the shell and / or the first heat insulation part.

[0020] According to some optional embodiments of the present application, the first heat insulation part is arranged between the shell and the second heat insulation part.

[0021] According to some optional embodiments of the present application, a first through hole is arranged on the first heat insulation part, and a second through hole is arranged on the second heat insulation part; the fixing part comprises a first fixing part and a second fixing part, the first fixing part is fixed with the shell, and the second fixing part is fixed with the first fixing part by penetrating through the first through hole and the second through hole.

[0022] According to some optional embodiments of the present application, a second groove is formed on the side of the second heat insulation part away from the shell, and the second through hole penetrates through the bottom wall of the second groove.

[0023] According to some embodiments of the present application, one of the second heat insulation member and the shell is provided with a buckle and the other is provided with a clamping hole, and the buckle is connected with the clamping hole in a clamping mode.

[0024] According to some embodiments of the present application, the second heat insulation member comprises a front cover body, a rear cover body and a bottom cover body, the front cover body and the rear cover body are butted in the front-rear direction and cooperatively define the cavity with an open bottom, and the bottom cover body covers the open bottom side of the cavity.

[0025] According to some embodiments of the present application, the first heat insulation member comprises a front heat insulation part, a rear heat insulation part and a lower heat insulation part, the front heat insulation part covers the front side of the shell, the rear heat insulation part covers the rear side of the shell, the lower heat insulation part covers the bottom of the shell, and the front heat insulation part, the rear heat insulation part and the lower heat insulation part are connected in a splicing mode, wherein the front heat insulation part and / or the rear heat insulation part is fixed to the shell by the fixing member.

[0026] According to some embodiments of the present application, the shell comprises a front shell part and a rear shell part, the front shell part and the rear shell part are butted in the front-rear direction and cooperatively define the sound attenuation cavity.

[0027] According to the exhaust device of the second aspect of the present application, the exhaust device comprises a catalytic converter and the muffler of the first aspect of the present application, and the muffler is connected with the catalytic converter.

[0028] According to the exhaust device of the present application, by arranging the muffler of the first aspect of the present application, the fixing member is arranged, the fixing member can fix the heat insulation member, so that heat can be prevented from being emitted from the heat insulation member to the outside of the muffler, and thus the devices around the muffler can be effectively protected.

[0029] According to the vehicle of the third aspect of the present application, the vehicle comprises an engine, the engine has an exhaust port, the exhaust device of the second aspect of the present application is arranged, the exhaust device is communicated with the exhaust port, and the muffler is arranged on the front side of the engine.

[0030] According to the vehicle of the present application, the exhaust device of the second aspect of the present application is arranged, the muffler of the first aspect of the present application is arranged on the exhaust device, and the fixing member is arranged, the fixing member can fix the heat insulation member, so that heat can be prevented from being emitted from the heat insulation member to the outside of the muffler, and thus the devices around the muffler can be effectively protected.

[0031] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic view of a vehicle according to an embodiment of the present application;

[0033] Figure 2 is Figure 1 is a schematic view of a first angle of the exhaust device shown in FIG. 1;

[0034] Figure 3 is Figure 1 is a schematic view of a second angle of the exhaust device shown in FIG. 1;

[0035] Figure 4 is Figure 3 is a partial enlarged view of A in FIG. 1;

[0036] Figure 5 is Figure 3 is a schematic view of a third angle of the exhaust device shown in FIG. 1;

[0037] Figure 6 is Figure 3 is a schematic view of a fourth angle of the exhaust device shown in FIG. 1;

[0038] Figure 7 is Figure 3 is a schematic view of a fifth angle of the exhaust device shown in FIG. 1;

[0039] Figure 8 is Figure 3 is a schematic view of a sixth angle of the exhaust device shown in FIG. 1;

[0040] Figure 9 is Figure 3 is an exploded view of one embodiment of the muffler shown in FIG. 1;

[0041] Figure 10 is Figure 9 is a schematic view of the thickness of the aerogel layer and the glass fiber layer of the rear heat insulation part shown in FIG. 1;

[0042] Figure 11 is Figure 3 is an exploded view of another embodiment of the muffler shown in FIG. 1.

[0043] Reference signs:

[0044] 100, muffler;

[0045] 10, shell; 11, first groove;

[0046] 101, front shell part; 102, rear shell part;

[0047] 20, first heat insulation part; 21, first through hole; 22, aerogel layer; 23, glass fiber layer;

[0048] 201, front heat insulation part; 202, rear heat insulation part; 203, lower heat insulation part;

[0049] 30, fixing member; 31, first fixing part; 32, second fixing part;

[0050] 40, second heat insulation member; 41, second through hole; 42, second groove;

[0051] 401, front cover; 402, rear cover; 403, bottom cover;

[0052] 200, catalytic converter;

[0053] 300, EGR;

[0054] 1000, exhaust device;

[0055] 2000, engine;

[0056] 1, vehicle. DETAILED DESCRIPTION

[0057] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0058] Reference will be made to the drawings Figures 1-11 A muffler 100 according to an embodiment of the present application is described below.

[0059] Reference is made to Figure 1 , Figure 3 , Figure 4 and Figure 9 A muffler 100 according to an embodiment of the present application is applied to a vehicle 1, and the muffler 100 is an important component in the exhaust system of the vehicle 1, and mainly functions to reduce the noise generated when the engine 2000 is exhausted, and at the same time, it can also affect the performance and emission effect of the vehicle 1. The muffler 100 comprises a housing 10, a first heat insulation member 20 and a fixing member 30. Specifically, the housing 10 defines a sound attenuation cavity therein; the first heat insulation member 20 is arranged in the housing 10; and the first heat insulation member 20 is fixed to the housing 10 by the fixing member 30.

[0060] For example, as shown in Figure 1 , Figure 3 , Figure 4 and Figure 9 , the housing 10 has a sound attenuation unit therein, the sound attenuation unit is used to reduce the noise of the engine 2000, and the heat insulation member can be arranged inside the housing 10, or the heat insulation member can be wrapped on the outer surface of the housing 10.

[0061] When the vehicle 1 is running, the engine 2000 operates to generate exhaust gas, and the exhaust gas enters the muffler 100 to be treated by the muffler 100. Since the exhaust gas is a high-temperature gas, the first heat insulation part 20 absorbs the heat of the exhaust gas, thereby effectively preventing the heat from being emitted to the devices around the muffler 100.

[0062] The muffler 100 of the utility model, set fixed part 30, fixed part 30 can be fixed to the first heat insulation part 20, compared with prior art without the first heat insulation part 20 fixed, leading to the first heat insulation part 20 deformation off scheme, the muffler 100 of the application can be stably fixed in the first heat insulation part 20 required position, prevent the first heat insulation part 20 due to vibration and gather downward, so as to avoid heat from the first heat insulation part 20 off position to emit to the outside of muffler 100, further can avoid the electrical components around the muffler 100 suffer heat damage, effectively protect the surrounding devices, simultaneously, the first heat insulation part 20 can slow down the material aging and corrosion speed caused by high temperature of muffler 100, so as to prolong the service life of muffler 100.

[0063] The muffler 100 according to the embodiments of the utility model, set fixed part 30, fixed part 30 can be fixed to the first heat insulation part 20, so as to avoid heat from the first heat insulation part 20 off position to emit to the outside of muffler 100, further can effectively protect the devices around the muffler 100.

[0064] According to some embodiments of the utility model, refer to Figure 3 、 Figure 4 and Figure 9 , the fixed part 30 includes a first fixing part 31 and a second fixing part 32, the first fixing part 31 is arranged on the shell 10, and the first fixing part 31 cooperates with the second fixing part 32 to fix the first heat insulation part 20 and the shell 10. Thus, the strength of the fixed first heat insulation part 20 and the shell 10 can be ensured, the first heat insulation part 20 and the shell 10 are effectively prevented from being separated, and the devices around the muffler 100 are further prevented from suffering heat damage. Meanwhile, the first fixing part 31 cooperates with the second fixing part 32, so that the fixed part 30 and the first heat insulation part 20 can be conveniently installed in cooperation, and the assembly efficiency of the muffler 100 can be improved.

[0065] According to some embodiments of the utility model, refer to Figure 3 、 Figure 4 and Figure 9The first heat insulation piece 20 is provided with a first through hole 21, and the second fixing part 32 is connected with the first fixing part 31 in a matched mode through the first through hole 21. In this way, the first through hole 21 is arranged, so that the second fixing part 32 can pass through the first through hole 21 and then be connected with the first fixing part 31 in a matched mode. Therefore, the second fixing part 32 can be connected with the first fixing part 31 in a matched mode after piercing the first heat insulation piece 20, so that the fixing of the fixing part 30 and the first heat insulation piece 20 is facilitated, and the assembly efficiency of the fixing part 30 and the first heat insulation piece 20 is improved.

[0066] For example, as shown in Figure 3 , Figure 4 and Figure 9 , the first fixing part 31 is a threaded hole, and the second fixing part 32 is a threaded stud. The threaded stud is connected with the threaded hole in a threaded connection mode after passing through the first through hole 21. Further, the first fixing part 31 can be a threaded stud, and the second fixing part 32 is a threaded hole. The threaded stud is connected with the threaded hole in a threaded connection mode after passing through the first through hole 21.

[0067] According to some optional embodiments of the utility model, referring to Figure 3 , Figure 4 and Figure 9 , a part of the shell wall of the shell 10 is recessed along the thickness direction of the shell wall (for example, the front-rear direction shown in Figure 3 ) to form a first recess 11, and the first fixing part 31 is arranged in the first recess 11. In this way, the first recess 11 is arranged, so that a fixing position is provided for the first fixing part 31, thereby facilitating the placement of the first fixing part 31. Meanwhile, the second fixing part 32 can extend to a position deeper relative to the surface of the muffler 100, so that the space occupied by the fixing part 30 can be reduced, thereby reducing the volume of the muffler 100 and facilitating the installation of the muffler 100 in the front compartment of the vehicle 1.

[0068] For example, as shown in Figure 4 , a part of the shell wall of the shell 10 can be recessed forward along the front-rear direction to form the first recess 11, and a part of the shell wall of the shell 10 can also be recessed backward along the front-rear direction to form the first recess 11. Specifically, as shown in Figure 4 , the shell 10 is provided with the first recess 11 recessed forward, the first fixing part 31 is arranged on the bottom wall of the first recess 11, and the front end of the second fixing part 32 extends into the first recess 11 and is connected with the first fixing part 31.

[0069] Preferably, the first fixing part 31 can be an external thread boss, and the first heat insulation piece 20 is fixed in a form of the external thread boss and a gasket. Alternatively, the first fixing part 31 can be an internal thread boss, and the first heat insulation piece 20 is fixed in a form of the internal thread boss and a gasket. The first fixing part 31 can be selected in a reasonable form according to actual requirements, thereby reducing the manufacturing difficulty of the fixing part and facilitating the matched installation of the fixing part 30 and the first heat insulation piece 20.

[0070] Further, the first fixing part 31 can be welded with the bottom wall of the first groove 11, and the connection form can guarantee the fixing strength of the first fixing part 31 and the shell 10, effectively prevent the first fixing part 31 from separating from the shell 10, and further guarantee the stability of the fixing part 30 fixing the heat insulation part.

[0071] According to some embodiments of the present application, referring to Figure 3 and Figure 4 , the first fixing part 31 is threadedly connected with the second fixing part 32. Thus, the connection form of the thread connection is simple in structure and convenient to assemble, so as to improve the assembly efficiency of the fixing part 30 and the first heat insulation part 20.

[0072] According to some embodiments of the present application, referring to Figure 3 , Figure 4 and Figure 9 , the number of the first fixing part 31 is multiple, that is, the number of the first fixing part 31 can be two, three or four or more, and the first fixing part 31 is distributed on the shell 10 in intervals, and the second fixing part 32 corresponds to the first fixing part 31 one by one. Thus, the multiple fixing parts 30 can divide the heat insulation part into smaller parts, so as to make the fixing part 30 bear smaller shaking of the heat insulation cotton, and further guarantee the stability of the fixing part 30 fixing the heat insulation cotton. For example, as shown in Figure 3 , Figure 4 and Figure 9 , the number of the fixing part 30 is seven, and the seven fixing parts 30 are arranged in intervals along the up-down direction on the shell 10.

[0073] According to some embodiments of the present application, referring to Figure 3 , Figure 4 and Figure 9 , the first adhesive part is arranged between the first heat insulation part 20 and the shell 10, and is connected by the first adhesive part. Thus, the first adhesive part can increase the connection strength of the first heat insulation part 20 and the shell 10, so as to effectively prevent the heat insulation part from deforming and falling off.

[0074] Preferably, the first adhesive part is inorganic glue with high temperature resistance, so as to prevent the first adhesive part from failing due to heat, and at the same time, the inorganic glue is simple to obtain, so as to be used in batches.

[0075] Further, as shown in Figure 9 and Figure 11 , the heat insulation part can be single-layer or multi-layer, so as to select a reasonable number of layers according to actual needs, and further guarantee the versatility of the heat insulation part.

[0076] According to some embodiments of the present application, referring to Figure 3 , Figure 4 andFigure 9 The first heat insulation member 20 is arranged on the inner side and / or the outer side of the shell 10, that is, the first heat insulation member 20 can be arranged on the inner side of the shell 10, the first heat insulation member 20 can also be arranged on the outer side of the shell 10, and the first heat insulation member 20 can also be arranged on the inner side and the outer side of the shell 10. Therefore, the first heat insulation member 20 can be arranged at a reasonable position according to actual needs, so as to ensure the heat insulation effect of the muffler 100. For example, the first heat insulation member 20 is arranged on the inner side of the shell 10, so that the heat in the sound absorption cavity can be directly absorbed, thereby protecting the shell 10 and prolonging the service life of the shell 10. The first heat insulation member 20 is arranged on the outer side of the shell 10, so that the first heat insulation member 20 can be maintained and replaced without disassembling the shell 10, thereby facilitating after-sales maintenance. The first heat insulation member 20 is arranged on the inner side and the outer side of the shell 10, so as to effectively ensure the heat insulation effect of the muffler 100.

[0077] According to some embodiments of the present application, referring to Figure 9 and Figure 10 The first heat insulation member 20 comprises an aerogel layer 22 and a glass fiber layer 23, and the aerogel layer 22 and the glass fiber layer 23 are stacked along the thickness direction of the heat insulation member. Therefore, the aerogel layer 22 has good heat absorption effect, so as to avoid the heat in the exhaust gas from being dissipated to the outer side of the muffler 100. The glass fiber layer 23 also has good heat absorption effect, and the cost of the glass fiber layer 23 is low, so as to reduce the manufacturing cost of the muffler 100. In addition, the aerogel layer 22 and the glass fiber layer 23 cooperate together, so as to maximize the absorption of the heat in the exhaust gas, thereby effectively protecting the structure around the muffler 100 and avoiding heat damage.

[0078] For example, as shown in Figure 9 and Figure 10 The aerogel layer 22 is arranged on the outer side of the glass fiber layer 23. The base material of the aerogel layer 22 is a felt made by needle punching process. The aerogel layer 22 is made by attaching aerogel powder on the base material through process treatment, and the working temperature of the aerogel layer 22 can reach above 1050℃. The glass fiber layer 23 does not have aerogel powder attached, and the working temperature of the glass fiber layer 23 is above 650℃.

[0079] According to the experimental measurement, the thermal conductivities of the aerogel layer 22 and the glass fiber layer 23 increase with the increase of temperature, and the heat insulation effect of the aerogel layer 22 is significantly better than that of the glass fiber layer 23 below 600 DEG C, and the heat insulation effect of the aerogel layer 22 is similar to that of the glass fiber layer 23 above 600 DEG C. In the idling condition, the heat dissipation amount of the single-layer glass fiber layer 23 is about 14% higher than that of the single-layer aerogel layer 22, which indicates that the heat insulation performance of the single-layer aerogel layer 22 is better than that of the single-layer glass fiber layer 23 in the case of the same thickness.

[0080] In addition, by taking the heat dissipation amount of the single-layer aerogel layer 22 with a thickness of 15 mm as a reference, the heat dissipation performance of the double-layer material with different thickness ratios is compared, and it is found that the heat dissipation amounts of the 10 mm glass fiber layer 23 and the 9 mm aerogel layer 22, the 16 mm glass fiber layer 23 and the 6 mm aerogel layer 22, the 22 mm glass fiber layer 23 and the 3 mm aerogel layer 22, and the 27 mm glass fiber layer 23 and the 3 mm single-layer aerogel are similar. The working temperature of the muffler 100 is about 800 DEG C, and the single-layer glass fiber layer 23 heat insulation piece needs a relatively thick design thickness to meet the heat insulation requirement, and the production cost of the single-layer aerogel layer 22 heat insulation piece is relatively high. Therefore, the double-layer stacked heat insulation piece is used as the heat insulation scheme of the muffler 100 by comprehensively considering the assembly space, the production cost and the heat insulation performance requirement.

[0081] According to some optional embodiments of the present application, referring to Figure 9 and Figure 10 , the thickness of the glass fiber layer 23 is greater than the thickness of the aerogel layer 22. Since the aerogel layer 22 has a high cost, the thickness of the glass fiber layer 23 is maximized, and the thickness of the aerogel layer 22 is minimized, so that the manufacturing cost of the muffler 100 is maximally reduced while the heat insulation effect is ensured.

[0082] For example, as shown in Figure 10 , d1 represents the thickness of the glass fiber layer 23, and d2 represents the thickness of the aerogel layer 22, and it can be seen from the figure that the thickness of the glass fiber layer 23 is greater than the thickness of the aerogel layer 22.

[0083] According to some embodiments of the present application, referring to Figure 9 and Figure 10 , the ratio of the thickness of the glass fiber layer 23 to the thickness of the aerogel layer 22 is greater than 1 and less than or equal to 3. Thus, the manufacturing cost of the muffler 100 is maximally reduced while the heat insulation effect is ensured.

[0084] For example, as shown in Figure 9 and Figure 10 , the ratio of the thickness of the glass fiber layer 23 to the thickness of the aerogel layer 22 can be 3:1, 3:2 or 3:3, preferably, the ratio of the thickness of the glass fiber layer 23 to the thickness of the aerogel layer 22 is 3:2.

[0085] According to some embodiments of the present application, referring to Figure 3 , Figure 9 and Figure 10 , the thickness of the first thermal insulation part 20 is greater than or equal to 12mm and less than or equal to 15mm. Thus, the heat absorption effect of the first thermal insulation part 20 can be effectively guaranteed, and the structure around the muffler 100 can be protected. For example, the thickness of the first thermal insulation part 20 can be 12mm, 13mm, 14mm or 15mm.

[0086] Further, as shown in Figure 3 , Figure 9 and Figure 10 , the design thickness requirement of the first thermal insulation part 20 is 15mm, according to experimental measurement, when the glass fiber layer 23 replaces the aerogel layer 22 with a thickness of 5mm, the increase in heat dissipation in the front compartment of the vehicle 1 is less than 3%; when the glass fiber layer 23 replaces the aerogel layer 22 with a thickness of less than 2.5mm, the increase in heat dissipation in the front compartment of the vehicle 1 is less than 1%. Therefore, under the premise of meeting the heat insulation performance requirements, in order to reduce the cost, the thickness ratio of the two materials of the double-layer thermal insulation part is 9mm for glass fiber and 9mm for aerogel, and the thickness ratio of the two thermal insulation materials is 3:2. Under this thickness ratio, the heat insulation performance of the 15mm double-layer first thermal insulation part 20 is similar to that of the 12mm single-layer aerogel, but the production cost is greatly reduced. The exhaust gas temperature of the engine 2000 is usually above 600℃, according to the material properties of the aerogel layer 22 and the glass fiber layer 23, as shown in Figure 10 , the glass fiber layer 23 is arranged on the side close to the shell 10, and the aerogel is arranged on the side of the second thermal insulation part 40. By this arrangement, the heat insulation performance of the two materials at different temperatures can be fully utilized, which is conducive to the reduction of the surface temperature of the muffler 100.

[0087] According to some embodiments of the present application, referring to Figure 3 and Figure 9 , the muffler 100 further comprises a second thermal insulation part 40, the second thermal insulation part 40 defines a cavity, the shell 10 and the first thermal insulation part 20 are arranged in the cavity, and the second thermal insulation part 40 is fixed with the shell 10 and / or the first thermal insulation part 20, that is, the second thermal insulation part 40 can be fixed with the shell 10, or the second thermal insulation part 40 can be fixed with the first thermal insulation part 20, or the second thermal insulation part 40 can be fixed with both the shell 10 and the first thermal insulation part 20.

[0088] In this way, the second heat insulation piece 40 can protect the first heat insulation piece 20 and the shell 10 in the cavity, so that the first heat insulation piece 20 and the shell 10 can be prevented from being damaged by contacting other structures, and meanwhile, the second heat insulation piece 40 can further absorb the residual heat that is not completely absorbed by the first heat insulation piece 20, so that the heat absorption effect of the muffler 100 can be ensured, and the devices around the muffler 100 can be effectively protected.

[0089] For example, as shown in Figure 3 and Figure 9 , the second heat insulation piece 40 defines a cavity inside, when the first heat insulation piece 20 is located inside the shell 10, the second heat insulation piece 40 is fixed with the shell 10, when the first heat insulation piece 20 is wrapped on the outer surface of the shell 10, the second heat insulation piece 40 can be fixed with the first heat insulation piece 20 alone, and the second heat insulation piece 40 can also be fixed with the first heat insulation piece 20 and the shell 10. Preferably, the second heat insulation piece 40 is a metal piece, and the metal material has excellent high-temperature resistance and can withstand the high temperature generated by the engine 2000 and the exhaust system, so that the second heat insulation piece 40 can effectively prevent heat from being transmitted to other key components such as wires and plastic parts.

[0090] According to some embodiments of the present application, referring to Figure 3 and Figure 9 , the first heat insulation piece 20 is arranged between the shell 10 and the second heat insulation piece 40. In this way, the first heat insulation piece 20 is arranged at a reasonable position, which can not only ensure that the shell 10 can normally perform the noise reduction treatment on the exhaust gas discharged by the engine 2000, but also can not contact the outside, so that the service life of the second heat insulation piece 40 can be ensured.

[0091] Further, as shown in Figure 3 and Figure 9 , inorganic glue is arranged between the first heat insulation piece 20 and the second heat insulation piece 40, and the first heat insulation piece 20 is connected to the inner surface of the second heat insulation piece 40 by the inorganic glue.

[0092] According to some embodiments of the present application, referring to Figure 3 , Figure 4 and Figure 9 , the first heat insulation piece 20 is provided with a first through hole 21, and the second heat insulation piece 40 is provided with a second through hole 41; the fixing piece 30 includes a first fixing part 31 and a second fixing part 32, the first fixing part 31 is fixed with the shell 10, and the second fixing part 32 is fixed with the first fixing part 31 by penetrating the first through hole 21 and the second through hole 41. In this way, the fixing piece 30 can sequentially penetrate the first through hole 21 and the second through hole 41 from the outside to the inside, and then fix the first heat insulation piece 20 in the cavity, which is simple in installation and convenient in operation, so that the assembly efficiency of the muffler 100 can be improved.

[0093] For example, asFigure 3 、 Figure 4 and Figure 9 As shown in

[0094] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 and Figure 9 , the second heat insulation piece 40 is formed with a second groove 42 on the side away from the shell 10, and the second through hole 41 penetrates the bottom wall of the second groove 42. Thus, the second groove 42 can provide a setting position for the second through hole 41, so that the arrangement of the second through hole 41 can be facilitated, and at the same time, the second groove 42 can limit the heat insulation piece in the up-down direction, so that the heat insulation piece can be prevented from deforming and falling off.

[0095] For example, as shown in Figure 3 、 Figure 4 and Figure 9 , the second heat insulation piece 40 is provided with a second groove 42, the second groove 42 is recessed towards the shell 10, the second through hole 41 penetrates the second recessed part in the front-rear direction, and the second recessed part corresponds to the first recessed part one by one in the front-rear direction.

[0096] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 and Figure 9 , one of the second heat insulation piece 40 and the shell 10 is provided with a buckle and the other is provided with a clamping hole, that is, the second heat insulation piece 40 can be provided with a buckle and the shell 10 can be provided with a clamping hole, or the shell 10 can be provided with a buckle and the second heat insulation piece 40 can be provided with a clamping hole, and the buckle and the clamping hole are connected by clamping. Thus, this connection form is simple and convenient to operate, so that the assembly efficiency of the muffler 100 can be effectively improved.

[0097] According to some embodiments of the present application, referring to Figure 3 and Figure 9 , the first heat insulation piece 20 includes a front heat insulation part 201, a rear heat insulation part 202 and a lower heat insulation part 203, the front heat insulation part 201 covers the front side of the shell 10 (such as the front side of the shell 10 shown in Figure 9 ), the rear heat insulation part 202 covers the rear side of the shell 10 (such as the front side of the shell 10 shown in Figure 9 ), and the lower heat insulation part 203 covers the bottom of the shell 10 (such as the bottom of the shell 10 shown in Figure 9 ), and the front heat insulation part 201, the rear heat insulation part 202 and the lower heat insulation part 203 are connected by splicing, wherein the front heat insulation part 201 and / or the rear heat insulation part 202 is / are fixed to the shell 10 / or the second heat insulation piece 40 by the fixing piece 30.

[0098] In this way, the front heat insulation part 201, the rear heat insulation part 202 and the lower heat insulation part 203 are spliced ​​together to form the first heat insulation component 20, which can not only cover the shell 10 as a whole, but also facilitate the installation of the heat insulation component on the shell 10, reduce the installation difficulty, and thus effectively improve the manufacturing efficiency of the muffler 100.

[0099] For example, such as Figure 3 and Figure 9 As shown, the front heat insulation part 201 covers the front side of the housing 10, the rear heat insulation part 202 covers the rear side of the housing 10, and the lower heat insulation part 203 covers the bottom of the housing 10. The front heat insulation part 201, the rear heat insulation part 202 and the lower heat insulation part 203 are spliced ​​together. The front heat insulation part and the rear heat insulation part are both fixed to the housing 10 and the second heat insulation part 40 by the fastener 30.

[0100] According to some optional embodiments of the present invention, refer to Figure 3 and Figure 9 The second heat insulation component 40 includes a front cover 401, a rear cover 402, and a bottom cover 403, with the front cover 401 and the rear cover 402 positioned in the front-rear direction (e.g., ...). Figure 9 The bottom cover 403 is sealed on the open side of the bottom of the cavity, and the front and rear directions shown are aligned to define the cavity.

[0101] In this way, the front cover 401, the rear cover 402 and the bottom cover 403 are spliced ​​together to form the second heat insulation component 40, which can not only cover the first heat insulation component 20 one by one, but also facilitate the installation of the second heat insulation component 40 on the housing 10, reduce the installation difficulty, and thus effectively improve the assembly efficiency of the muffler 100.

[0102] For example, such as Figure 3 and Figure 9 As shown, the front cover 401 is located on the front side of the front heat insulation part 201, the rear cover 402 is located on the rear side of the rear heat insulation part 202, and the bottom cover 403 is located on the lower side of the lower heat insulation part 203. The front cover 401 and the rear cover 402 are joined in the front-rear direction and cooperate to define a cavity with an open bottom. The bottom cover 403 covers the open bottom side of the cavity, and the heat insulation element is located inside the cavity. Preferably, the front cover 401, the rear cover 402, and the bottom cover 403 are all formed by stamping from stainless steel plates with a thickness of 0.3mm, thereby ensuring the strength of the second heat insulation element 40.

[0103] According to some embodiments of this utility model, refer to Figure 3 and Figure 9 The housing 10 includes a front housing portion 101 and a rear housing portion 102, the front housing portion 101 and the rear housing portion 102 being in the front-rear direction (e.g., Figure 9The front shell part 101 and the rear shell part 102 are butted in the front-rear direction of the rear shell part 102 shown, and cooperate to define a sound damping cavity. Thus, the assembly of the shell 10 can be facilitated. Preferably, the front shell part 101 and the rear shell part 102 are each stamped from a stainless steel sheet having a thickness of 1.2 mm, so that the structural strength of the shell 10 can be ensured.

[0104] Further, as shown in Figure 2 , the front side surface of the front cover body 401 is a plane, so that the occupation of the muffler 100 in the front compartment space of the vehicle 1 can be reduced, so that the muffler 100 can be conveniently installed in cooperation with the structure of the front compartment.

[0105] Further, as shown in Figure 2 , the muffler 100 is larger than other conventional mufflers 100, and has a length of about 500 mm, a width of about 390 mm, and an internal volume of about 30 L. The EGR 300 (exhaust gas recirculation cooler) is present above the muffler 100, and the entire pipeline is less affected by heat damage. However, the motor of the nearby EGR 300 is more seriously affected by heat, and therefore, a double-layer heat insulation member is used, so that the heat insulation effect of the muffler 100 can be ensured.

[0106] According to the exhaust device 1000 of the second aspect of the utility model, referring to Figure 1 , Figure 2 and Figure 3 , it comprises: a catalyst 200 and the muffler 100 of the first aspect of the embodiment, and the muffler 100 is connected with the catalyst 200.

[0107] For example, as shown in Figure 1 , Figure 2 and Figure 3 , the muffler 100 has an air inlet, and the catalyst 200 is arranged on the upper side of the right side of the muffler 100, and the catalyst 200 is connected with the air inlet of the muffler 100. In this way, the exhaust gas of the engine 2000 will pass through the catalytic action of the catalyst 200 and then enter the muffler 100, so that the exhaust gas can meet the emission standard. The thickness of the glass fiber layer 23 is 9 mm, and the thickness of the aerogel layer 22 is 6 mm, so the total thickness of the first heat insulation member 20 is 15 mm.

[0108] Further, as shown in Figure 1As shown, the exhaust device 1000 is developed and designed based on a 2.0T engine 2000 assembly, and the exhaust temperature thereof is about 800℃ or so. For other displacement engines 2000, the exhaust temperature of the 2.0T engine 2000 is slightly higher, but still meets the working temperature range of the heat insulation member composed of the aerogel layer 22 and the glass fiber layer 23, and the exhaust temperature of the 1.5L engine 2000 is relatively low, and also meets the working temperature range of the heat insulation member. Therefore, the heat insulation structure of the exhaust device 1000 can adapt to the heat insulation performance requirements of various engine 2000 assemblies.

[0109] Further, as shown in Figure 1 , the heat insulation member of the exhaust device 1000 meets the heat insulation performance requirements of the automobile under various operating conditions, such as idling driving, low-speed climbing, high-speed climbing, high-speed driving, etc. Similarly, the double-layer heat insulation structure is suitable for the traditional automobile exhaust system with high-temperature heat damage risk.

[0110] According to the exhaust device 1000 of the embodiment of the utility model, by setting the muffler 100 of the first aspect of the above embodiment, the fixing part 30 can fix the heat insulation member, so as to avoid heat from the heat insulation member falling position to the outside of the muffler 100, and then the device around the muffler 100 can be effectively protected, at the same time, the catalyst 200 is connected to the muffler 100, which can improve the functional integration of the exhaust device 1000, so as to reduce the volume of the exhaust device 1000 and reduce the space occupation of the exhaust device 1000.

[0111] According to the vehicle 1 of the third aspect of the utility model, referring to Figure 1 , Figure 2 and Figure 3 , comprising: an engine 2000 and the exhaust device 1000 of the second aspect of the embodiment, the engine 2000 has an exhaust port; the exhaust device 1000 is in communication with the exhaust port, and the muffler 100 is arranged on the front side of the engine 2000 (such as Figure 1 as shown in the front side of the engine 2000).

[0112] For example, as shown in Figure 1 , Figure 2 and Figure 3 , the engine 2000 has an exhaust port, and the catalyst 200 is in communication with the exhaust port, so that the exhaust gas of the engine 2000 enters the muffler 100 after being catalyzed by the catalyst 200.

[0113] According to the embodiment of the utility model, the second aspect exhaust device 1000 is arranged on the vehicle 1, the muffler 100 of the above first aspect embodiment is arranged on the exhaust device 1000, the fixing part 30 is arranged, the fixing part 30 can fix the heat insulation part, thereby can avoid heat from the heat insulation part drop position to dissipate to the outside of the muffler 100, further can effectively protect the device around the muffler 100, simultaneously, the catalytic converter 200 is connected on the muffler 100, can promote the function integration of exhaust device 1000, thereby can exhaust device 1000 volume, reduce the space occupation of exhaust device 1000.

[0114] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0115] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0116] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0117] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without mutual contradiction.

[0118] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A silencer (100) applied to a vehicle (1), characterized in that, The application relates to a sound attenuation device, comprising: a shell (10) defining a sound attenuation cavity inside the shell (10); a first thermal insulation member (20) arranged in the shell (10); a fixing member (30) for fixing the first thermal insulation member (20) to the shell (10).

2. The muffler (100) according to claim 1, characterized in that The fixing member (30) comprises a first fixing part (31) arranged on the shell (10) and a second fixing part (32) cooperating with the first fixing part (31) to fix the first thermal insulation member (20) to the shell (10).

3. The muffler (100) of claim 2, characterized in that The first thermal insulation member (20) is provided with a first through hole (21), and the second fixing part (32) passes through the first through hole (21) to be connected to the first fixing part (31).

4. The muffler (100) of claim 2, characterized in that A part of a shell wall of the shell (10) is recessed along the thickness direction of the shell wall to form a first recess (11), and the first fixing part (31) is arranged in the first recess (11).

5. The muffler (100) of claim 2, characterized in that, The first fixing part (31) is threadedly connected to the second fixing part (32).

6. The muffler (100) of claim 2, characterized in that, The first fixing part (31) is in a plurality of numbers and is arranged on the shell (10) in a spaced manner, and the second fixing part (32) corresponds to the first fixing part (31) in a one-to-one manner.

7. The muffler (100) of claim 1, characterized in that, The first thermal insulation member (20) is fixed to the shell (10) by a first adhesive.

8. The muffler (100) of claim 1, characterized in that, The first thermal insulation member (20) is arranged on the inner side and / or the outer side of the shell (10).

9. The muffler (100) according to any one of claims 1-8, characterized in that The first thermal insulation member (20) comprises an aerogel layer (22) and a glass fiber layer (23), and the aerogel layer (22) and the glass fiber layer (23) are arranged in a laminated manner along the thickness direction of the thermal insulation member.

10. The muffler (100) of claim 9, characterized in that The thickness of the glass fiber layer (23) is greater than or equal to the thickness of the aerogel layer (22).

11. The muffler (100) of claim 9, characterized in that The ratio of the thickness of the glass fiber layer (23) to the thickness of the aerogel layer (22) is greater than 1 and less than or equal to 3.

12. The muffler (100) of claim 9, characterized in that, The thickness of the first thermal insulation member (20) is greater than or equal to 12 mm and less than or equal to 15 mm.

13. The muffler (100) according to any one of claims 1-8, characterized in that The application further relates to a sound attenuation device, comprising: a second thermal insulation member (40) defining a cavity, wherein the shell (10) and the first thermal insulation member (20) are arranged in the cavity, and the second thermal insulation member (40) is fixed to the shell (10) and / or the first thermal insulation member (20).

14. The muffler (100) of claim 13, characterized in that The first thermal insulation member (20) is arranged between the shell (10) and the second thermal insulation member (40).

15. The muffler (100) of claim 14, characterized in that The first thermal insulation member (20) is provided with a first through hole (21), and the second thermal insulation member (40) is provided with a second through hole (41). The fixing member (30) comprises a first fixing part (31) fixed to the shell (10) and a second fixing part (32) fixed to the first fixing part (31) through the first through hole (21) and the second through hole (41).

16. The muffler (100) of claim 15, characterized in that The second heat insulation piece (40) is formed with a second groove (42) on the side away from the shell (10), and the second through hole (41) penetrates the bottom wall of the second groove (42).

17. The muffler (100) of claim 13, characterized by The second heat insulation piece (40) is provided with a buckle and a clamping hole on one of the shell (10), and the buckle is connected with the clamping hole.

18. The muffler (100) of claim 13, characterized by The second heat insulation piece (40) comprises a front cover (401), a rear cover (402) and a bottom cover (403), the front cover (401) and the rear cover (402) are butted in the front-rear direction, and cooperate to define the cavity with an open bottom, and the bottom cover (403) covers the open bottom side of the cavity.

19. The muffler (100) of claim 1, characterized in that, The first heat insulation piece (20) comprises a front heat insulation part (201), a rear heat insulation part (202) and a lower heat insulation part (203), the front heat insulation part (201) covers the front side of the shell (10), the rear heat insulation part (202) covers the rear side of the shell (10), and the lower heat insulation part (203) covers the bottom of the shell (10), and the front heat insulation part (201), the rear heat insulation part (202) and the lower heat insulation part (203) are connected in a splicing manner, wherein the front heat insulation part (201) and / or the rear heat insulation part (202) is fixed to the shell (10) by the fixing piece (30).

20. The muffler (100) of claim 1, characterized in that, The shell (10) comprises a front shell part (101) and a rear shell part (102), the front shell part (101) and the rear shell part (102) are butted in the front-rear direction, and cooperate to define the sound attenuation cavity.

21. An exhaust device (1000) characterized by, Comprising: A catalytic converter (200) and a muffler (100) according to any one of claims 1-20, the muffler (100) is connected with the catalytic converter (200).

22. A vehicle (1) characterized in that Comprising: An engine (2000) having an exhaust port; An exhaust device (1000) according to claim 21, the exhaust device (1000) is communicated with the exhaust port, and the muffler (100) is arranged on the front side of the engine (2000).

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