JP2013238242A - Exhaust emission control filter device of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust emission control filter device of an automobile.SOLUTION: An exhaust emission control filter device of an automobile includes a case, a front face support flange and a rear face support flange installed inside the case, and a filter member installed between the front face support flange and the rear face support flange. The front face support flange and the rear face support flange are respectively vertically fixed to a front end part and a rear end part of the filter member. The filter member includes a metallic form filter of a laminated form or a winding form, a metallic mat or a jacket for enclosing the metallic form filter. A plurality of holes are formed in a porous pipe installed inside the filter member. The porous pipe includes any one of structures for gradually narrowing a width toward the rear end part of the pipe or gradually widening a width toward the rear end part of the pipe, becoming small in the holes of the rear end part, being installed by inserting a cone into an inside space, or being installed by inserting a pyramid into the inside space.

Description

  In the present invention, by inserting and installing a cone or pyramid inside a porous pipe into which exhaust gas flows, the flow of exhaust gas flowing into the inflow port can be made smooth, and a gradient of the ventilation flow rate occurs. No particulate matter can be collected evenly inside the porous pipe, and the metal foam filter mounted inside the filter device is surrounded by a metal mat to maintain the original shape of the metal foam filter. It is possible to improve the durability of the filter device, and the inside of one filter member is divided into a plurality of filter parts by a partition, and various catalysts can be treated for each part and installed in one filter member. A variety of gases emitted from the exhaust gas can be removed, and a support member is attached to the front part of the cone formed inside the porous pipe into which the exhaust gas flows. By stably supporting the cone, the flow rate of the exhaust gas is allowed to flow uniformly into the porous pipe, and there is no gradient in the ventilation flow rate inside the porous pipe into which the exhaust gas flows. As described above, by forming in a contracted or expanded structure that narrows or widens the width of the rear end of the porous pipe, particulate matter (PM) can be uniformly collected inside the porous pipe, A pore-adjustable structure that reduces the pores at the rear end inside the porous pipe, and evenly distributes the flow rate even if the ventilation area is reduced and the pressure at the rear end is increased to increase the flow velocity. By fastening a conical cap to the upper end of the filter assembly, the flow of exhaust gas flowing into the inlet can be made smooth, between the front flange and the metal foam filter, and the rear frame. DPF (Diesel) is a smoke reduction device that can be welded by inserting a sealing mat in the form of a metal wire mash having a thermal expansion coefficient similar to that of the metal foam between the die and the metal foam filter. It is possible to improve the performance by effectively preventing the leakage of exhaust gas generated by long-term use of Particulate Filter), and the sealing mat is excellent in durability and makes the flow path constant even if exhaust gas passes for a long time A vortex generator is installed in a porous tube having a polygonal air passage in the exhaust gas purifier to generate an eddy current of the exhaust gas. While making it uniform, reducing the exhaust gas velocity and increasing the residual time in the filter, particulate matter (PM: The contact probability between the particulate matter) and the metal foam filter can be increased, and the collection efficiency can be increased. By using the metal fastening device to fasten the metal foam filter in the winding form, the assembly of the metal foam can be performed. It is easy to minimize the deformation of the metal foam that occurs during the winding process, reduce the loss rate of the metal foam, and repeat the form of spirals and sine wave when winding the metal foam between different kinds or the same kind , Square wave shape, circle shape, semicircle shape, X shape, etc., so that a plurality of metal foams can be connected to various shapes for the convenience of the user. This is a technology related to an automobile exhaust gas purification filter device.

  In the case of a conventional radial type metal foam filter, if exhaust gas flows into the inner pipe side, pressure is applied to the clogged rear end of the inner pipe, and the rear end side of the filter The flow velocity passing through the filter becomes faster, the pressure is low on the front end portion of the inner pipe, and the flow velocity passing through the front end portion side of the filter becomes slower. Thus, when a difference in flow velocity occurs over the entire filter, the flow velocity is high at the rear end and a large amount of flow flows at the same time, so that a large amount of particulate matter (PM) is collected, At the front end, the flow rate is slow and a small flow rate flows in the same time, so that a small amount of particulate matter is collected. In the case described above, when regeneration occurs, a misalignment may occur along with the filter damage due to the temperature gradient. In addition, there is a problem that adversely affects performance, such as providing a cause for an increase in back pressure before regeneration occurs.

  Conventionally, a ceramic seal has been used as a sealing material for a smoke reduction device. This ceramic seal has the advantages of easy deformation and excellent workability due to the characteristics of the material. However, when this ceramic seal is used in a smoke reduction device, there is a problem in durability due to severe thermal shock as well as periodic heating and cooling.

  In addition, high temperature exhaust gas flows into the smoke reduction device and is exhausted to the outside through the filter. In this process, the high temperature of the exhaust gas is transmitted to each component of the smoke reduction device, Conventional sealing mats have the problem of being broken or burned by thermal shock as well as periodic heating and cooling.

  Also, since porous tubes have been used only for the convenience of metal foam production and the role of shape preservation, reducing the exhaust gas speed and increasing the remaining time in the filter could not. Moreover, it was not possible to increase the collection efficiency by increasing the contact probability between the particulate matter (PM) and the metal foam filter.

  In addition, in the conventional case, since the filter assembly is manufactured in a wound form or a laminated form in the production of the filter assembly, deformation of the metal foam occurs during the lamination or winding process, and the loss rate of the metal foam occurs. However, there is a problem that the fastening performance of the filter assembly is inferior.

  Traditionally, adhesives have been utilized when connecting metal foams. However, if an adhesive is used for connection, there is a disadvantage that the adhesive must be removed by heating at a high temperature of about 600 ° C. due to the function of the foam. However, in order not to damage the metal foam, it may be heated at a high speed, but since it is not possible as a conventional method, it takes a lot of process time, and the adhesive heated at high temperature partially burns 100%. However, it remains in the ash and closes the pores of the metal foam, so there is a problem that the function of the foam is reduced.When the metal foam is wound after bonding the metal foam with an adhesive, the tensile force of the connected part Therefore, a phenomenon that the connection of the metal foam is broken during the winding process may occur.

  Therefore, the present invention has been devised to solve the above problems, and the object of the present invention is to insert a cone or pyramid inside a porous pipe into which exhaust gas flows. An exhaust gas purifying filter device for automobiles that can smooth the flow of exhaust gas flowing into the inlet, does not cause a gradient of the ventilation flow rate, and can uniformly collect particulate matter inside the porous pipe Is to provide.

  Another object of the present invention is to maintain the shape of the metal foam filter in its original state by surrounding the metal foam filter mounted inside the filter device with a metal mat, thereby improving the durability of the filter device. An object of the present invention is to provide an improved automobile exhaust gas purifying filter device.

  Another object of the present invention is that the inside of one filter member is divided into a plurality of filter parts by a partition, so that various catalysts can be treated for each part and mounted in one filter member, so that exhaust gas can be installed. A variety of exhaust gas aftertreatment devices for DOC, DeNOx, CDPF, SCR, LNT, Soot Capacitor, EGR catalyst filters, evaporators, and electrostatic filters can be made using various catalysts. An object of the present invention is to provide a filter device for purifying an exhaust gas of an automobile.

  Another object of the present invention is to stably support the cone by attaching a support member to the front portion of the cone formed inside the porous pipe into which the exhaust gas flows. It is an object of the present invention to provide an automobile exhaust gas purification filter device that can uniformly flow into a porous pipe.

  Another object of the present invention is to reduce the width of the rear end portion of the porous pipe or to reduce the width of the porous pipe so that the gradient of the aeration flow rate does not occur inside the porous pipe into which exhaust gas flows. An object of the present invention is to provide an automobile exhaust gas purifying filter device capable of uniformly collecting particulate matter (PM) inside a porous pipe by forming in an expanded tube structure.

  Another object of the present invention is to form a pore-adjustable structure that reduces the pores at the rear end portion inside the porous pipe. An object of the present invention is to provide an automobile exhaust gas purification filter device in which the flow rate is evenly distributed even if the speed is increased.

  Another object of the present invention is to provide a filter device for purifying an exhaust gas of an automobile capable of smoothing the flow of exhaust gas flowing into the inlet by fastening a conical cap to the upper end of the filter assembly. Is to provide.

  Another object of the present invention is to form a metal wire mash having a similar thermal expansion coefficient between the front flange and the metal foam filter and between the rear flange and the metal foam filter. By inserting the sealing mat, welding is possible and the performance can be improved by effectively preventing the leakage of exhaust gas generated by long-term use of DPF (Diesel Particulate Filter) which is a smoke reduction device. Another object of the present invention is to provide a filter device for purifying an exhaust gas of an automobile, in which a sealing mat is excellent in durability and can maintain a constant flow path even when exhaust gas passes for a long time.

  Another object of the present invention is to install an eddy current generating member in a porous tube having a polygonal air passage in an exhaust gas purification device to generate an eddy current of exhaust gas, Automobile exhaust gas that makes the flow distribution uniform, lowers the exhaust gas velocity, increases the remaining time in the filter, increases the contact probability between the particulate matter and the metal foam filter, and increases the collection efficiency The object is to provide a filter device for purification.

  Another object of the present invention is to use a metal fastening device to fasten a metal foam filter in a rolled form, thereby making it easy to assemble the metal foam and minimizing deformation of the metal foam that occurs during the winding process. Another object of the present invention is to provide an automobile exhaust gas purifying filter device that can reduce the loss rate of metal foam.

  In addition, another object of the present invention is to form a repeated spiral form, a sine wave form, a square wave form, a circle form, a semicircle form, when different types or the same type of metal foams are connected and wound. To provide a filter device for purifying an exhaust gas of an automobile capable of connecting and using a plurality of metal foams in various forms for the convenience of the user by sewing in various forms such as a form and an X-shape. is there.

  In order to achieve the object of the present invention, an automobile exhaust gas purifying filter device comprises an inlet through which exhaust gas burned from an engine flows into a porous tube-like porous pipe, and the exhaust gas is porous inside A case in which a discharge port is formed after flowing into the tube-shaped porous pipe and then discharged through the filter; fixed to the front end of the filter that is mounted inside the case and surrounds the porous pipe Fixing the porous pipe, and a front support flange for preventing the filter from being pushed out to the front end; and being fixed inside the case and vertically fixed to the rear end of the filter surrounding the porous pipe, And a rear support flange that prevents the filter from being pushed out to the rear end; and is mounted between the front support flange and the rear support flange, A metal foam filter in a laminated form or a wound form through which exhaust gas flowing into the interior of the pipe passes, and the shape of the metal foam filter is maintained in its original state, and is formed in a net shape for durability. A filter member comprising a metal mat or jacket surrounding the metal foam filter; and a porous pipe mounted inside the filter member, wherein a plurality of exhaust gases are allowed to flow smoothly through the filter member and be discharged In order to prevent a gradient in the flow rate of air flow inside the porous pipe, holes are formed, and a narrow pipe structure with a narrow width at the rear end of the porous pipe, and a pipe expansion type with a wide width at the rear end of the porous pipe. The pores at the rear end inside the porous pipe can be distributed evenly even if the structure and ventilation area are reduced and the pressure at the rear end is increased to increase the flow velocity. Pore-regulated structure that makes it smaller, a structure in which a cone is inserted and installed in the inner space where multiple holes are formed, so that the particulate matter can be uniformly collected inside the porous pipe, It includes any one of a structure in which a pyramid is inserted and mounted in an inner space in which a plurality of holes are formed so as to uniformly collect inside the porous pipe.

  In the present invention, a support member that stably supports the cone and allows a flow rate of exhaust gas to uniformly flow into the interior of the porous pipe at a front portion of the cone mounted inside the porous pipe. It is further characterized by including.

  In the present invention, a through hole is not formed in the front support flange, and a plurality of through holes are formed in the rear support flange so that exhaust gas that has passed through the filter member can be discharged.

  In the present invention, it further includes a partition inserted in a rear end portion of a cone attached to an inner middle of the porous pipe or a partition inserted in an intermediate portion formed so as to face the pyramid with its back facing. And

  In the present invention, the inside of the one filter member is divided into a plurality of filter parts by a partition, and various catalysts can be processed for each part, and can be mounted in one filter member. The gas can be removed.

  In the present invention, a conical cap is fastened to the upper end portion of the filter assembly in order to smooth the flow of the exhaust gas flowing into the inlet.

  The present invention further includes a metal wire mash type sealing mat having a similar thermal expansion coefficient between the front flange and the metal foam filter and between the rear flange and the metal foam filter. Features.

  In the present invention, there is further provided a vortex generating member that is inserted and fixed inside the porous tube-like pipe, generates a vortex in the exhaust gas flow, reduces the speed of the exhaust gas, and increases the remaining time in the filter. It is characterized by including.

  In the present invention, the eddy current generating member is vertically integrated in a form of a porous tube-like pipe and a plate-like thin film, and the exhaust gas flowing into the porous tube-like pipe is the eddy current generating member. It is characterized in that it can collide with a plate-like thin film to generate a vortex, reduce the speed of exhaust gas, and increase the remaining time in the filter.

  In the present invention, when winding the metal foam filter, in order to improve the fastening of the filter assembly, the metallic fastening device guide surrounding the metallic foam filter and the metallic fastening device guide are fixed to deform the metallic foam. And a metallic fastening device that can reduce the loss rate of the metal foam.

  In the present invention, the metallic fastening device is fastened by using one or a plurality of metallic fastening devices, and the metallic fastening device has a plurality of sharp tip portions in the length direction of the metal foam, and the size of the tip portion is large. The thickness can vary depending on the properties of the foam.

  In the present invention, the form in which the metal foam filters of the same kind or different kinds are connected by sewing are the form of a repeated spiral, the form of a sine waveform, the form of a square wave, the form of a circle, the form of a semicircle, One or a plurality of X shapes are selected.

  As described above, the exhaust gas purifying filter device for an automobile of the present invention has a cone or pyramid inserted into a porous pipe into which exhaust gas flows, so that the flow of exhaust gas that has flowed into the inflow port. The air flow rate gradient does not occur, the particulate matter can be collected uniformly inside the porous pipe, and the metal foam filter mounted inside the filter device is surrounded by a metal mat. The shape of the metal foam filter can be maintained in its original state, and the durability of the filter device can be improved. The inside of one filter member is divided into a plurality of filter parts by a partition, and various parts can be used. Can be installed in a single filter member, so that various gases emitted from the exhaust gas can be removed and the porous gas into which the exhaust gas flows can be removed. By attaching a support member to the front part of the cone formed inside the pipe, the cone is stably supported, so that the exhaust gas flow rate can flow uniformly into the porous pipe, In order to prevent a gradient in the flow rate of air flow inside the inflowing porous pipe, it is possible to form a particulate substance (narrowed or expanded) by reducing or widening the rear end of the porous pipe. PM) can be uniformly collected inside the porous pipe, and is formed into a pore-adjustable structure that reduces the pores at the rear end of the porous pipe, reducing the ventilation area and increasing the pressure at the rear end. Even if the flow velocity increases due to the action, the flow rate is evenly distributed, and by fastening the conical cap to the upper end of the filter assembly, the flow of the exhaust gas flowing into the inlet can be made smooth, Previous Welding is possible by inserting a metal wire mash type sealing mat with similar thermal expansion coefficient between the flange and metal foam filter and between the rear flange and metal foam filter, respectively. Therefore, it is possible to improve the performance by effectively preventing the leakage of exhaust gas generated by long-term use of DPF (Diesel Particulate Filter), which is a smoke reduction device, and the sealing mat has excellent durability. Even if the exhaust gas passes, the flow path can be kept constant, and the exhaust gas is installed by installing a vortex generating member in a porous tube having a polygonal air passage in the exhaust gas purification device. Eddy currents to make the flow distribution uniform, reduce the exhaust gas speed, The residual time in the filter can be increased to increase the contact efficiency between the particulate matter (PM) and the metal foam filter, thereby increasing the collection efficiency. As a result, the metal foam can be easily assembled, the deformation of the metal foam generated during the winding process can be minimized, the loss rate of the metal foam can be reduced, and the metal foam between different types or the same type can be connected. Users can use multiple metal forms by sewing in various forms such as repeated spirals, sine wave forms, square wave forms, circles, semicircles, X shapes, etc. For convenience, it can be used in various forms.

1 is a cross-sectional view illustrating a filter device having a structure in which a cone is mounted on an internal pipe according to an embodiment of the present invention. It is sectional drawing which shows the filter apparatus which consists of a structure with which the partition was mounted | worn by the rear-end part of the cone of the internal pipe by other one Example of this invention. FIG. 6 is a cross-sectional view illustrating a filter device having a structure in which a pyramid is attached to an internal pipe according to another embodiment of the present invention. It is sectional drawing which shows the filter apparatus which consists of a structure with which the partition was mounted | worn by the intermediate part of the pyramid which opposes with the internal pipe by another one Example of this invention. It is sectional drawing which shows the shape by which the support distribution member is formed in the front-end part of a cone with the filter apparatus by one Example of this invention. It is sectional drawing which shows the shape by which the metal mat is mounted | worn with the filter apparatus by one Example of this invention. FIG. 3 is a cross-sectional view illustrating a filter structure in which an internal pipe according to an embodiment of the present invention is formed in a contraction type structure. It is sectional drawing which shows the filter structure by which the internal pipe by other one Example of this invention is formed in the pipe expansion type structure. FIG. 6 is a cross-sectional view showing a filter structure in which an internal pipe according to another embodiment of the present invention is formed in a pore-regulating structure. 1 is a schematic cross-sectional view of a vehicle exhaust gas purifying filter device according to an embodiment of the present invention in which a sealing mat is mounted. 1 is a perspective view showing a schematic configuration of a vortex generating member mounted on an exhaust gas purifying filter device according to an embodiment of the present invention. It is drawing which shows the flow of the exhaust gas by the eddy current generating member of FIG. 1 is a view showing a metallic fastening device mounted on an exhaust gas purifying filter device according to an embodiment of the present invention. 1 is a view showing a shape in which a metal foam is fastened by a metallic fastening device to an exhaust gas purifying filter device according to an embodiment of the present invention. 1 is a view showing a metallic fastening device guide mounted on an exhaust gas purifying filter device according to an embodiment of the present invention. 4 is a photograph showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 3 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 3 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 3 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 3 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 3 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. 4 is a photograph of a plurality of metal foams of different types or the same type connected by sewing in a method of connecting metal foams according to an embodiment of the present invention.

  Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, if it is determined that a specific description of a related known technique or configuration may obscure the gist of the present invention, the detailed description thereof will be omitted, and the terms described below will be used in the present invention. The term is defined in consideration of the function, and this can be changed according to the intention of the user, the operator, or the custom. The definition is a book that describes the automobile exhaust gas purifying filter device of the present invention. Must be based on the content throughout the specification.

  FIG. 1 is a cross-sectional view illustrating a filter device having a structure in which a cone is mounted on an internal pipe according to an embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view illustrating a filter device having a structure in which a partition is attached to an end, and FIG. 3 is a cross-sectional view illustrating the filter device having a structure in which a pyramid is attached to an internal pipe according to another embodiment of the present invention. FIG. 4 is a cross-sectional view showing a filter device having a structure in which a partition is attached to an intermediate portion of a pyramid opposed by an internal pipe according to another embodiment of the present invention, and FIG. FIG. 6 is a cross-sectional view illustrating a shape in which a support member is formed at a front end portion of a cone in a filter device according to an embodiment of the present invention, and FIG. form FIG. 7 is a cross-sectional view showing a filter structure in which an internal pipe according to an embodiment of the present invention is formed in a contraction-type structure, and FIG. 8 is another embodiment of the present invention. FIG. 9 is a cross-sectional view illustrating a filter structure in which an internal pipe according to an example is formed in an expanded structure, and FIG. 9 illustrates a filter structure in which an internal pipe according to another embodiment of the present invention is formed in a pore-regulated structure. FIG. 10 is a schematic cross-sectional view in which a sealing mat is mounted in an automobile exhaust gas purifying filter device according to an embodiment of the present invention, and FIG. 11 is an embodiment of the present invention. It is a perspective view which shows schematic structure of the eddy current generation member with which the exhaust gas purification filter apparatus by this is mounted | worn. 12 is a view showing the flow of exhaust gas by the vortex generating member of FIG. 11, and FIG. 13 is a diagram showing a metallic fastening device mounted on the exhaust gas purifying filter device according to an embodiment of the present invention. FIG. 14 is a view showing a shape in which a metal foam is fastened to a filter device for purifying exhaust gas according to an embodiment of the present invention by a metallic fastening device, and FIG. 15 is a view showing an embodiment of the present invention. FIG. 16 is a view showing a metallic fastening device guide mounted on an exhaust gas purifying filter device according to the present invention. FIG. 16 is a cross-sectional view showing a method for connecting and winding metal foam according to an embodiment of the present invention. FIG. 17 is a photograph showing a form in which foams are connected by sewing, and FIG. 17 is a cross-sectional view of metal foams of different or similar types in a method of connecting and winding metal foams according to an embodiment of the present invention. FIG. 18 is a diagram showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention. FIG. 19 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment of the present invention, and FIG. FIG. 21 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a method of connecting and winding metal foams according to an embodiment, and FIG. 21 is a view of connecting metal foams according to an embodiment of the present invention. FIG. 22 is a view showing a form in which metal foams of different kinds or the same kind are connected by sewing in a winding method, and FIG. 22 shows a metal foam according to an embodiment of the present invention. A method of connecting a photograph linked by sewing a plurality of metal foam between xenogeneic or allogeneic.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals provided in each drawing denote the same members.

  The filter device 100 for purifying an exhaust gas of an automobile according to the present invention includes a case 10, an inlet 11, an outlet 12, a pipe 13, a cone 14, a pyramid 15, a support member member 16, a partition 17, a front support flange 20, and a conical cap. 21, rear support flange 30, through hole 31, filter member 40, metal foam filter 41, metal mat 42, jacket 43, metal foam 50, thread (string) 51, hole 60, sealing mat 70, eddy current generating member 80, metal , A metal fastening device guide 91, a tip 92, and the like.

  As shown in FIGS. 1 to 22, an exhaust gas purifying filter device 100 for an automobile includes an inlet 11 through which exhaust gas combusted from an engine flows into a porous tubular pipe 13, and the exhaust gas has an internal porosity. A case 10 in which a discharge port 12 is formed that flows into the tube-shaped pipe 13 and then passes through the filter; and is attached to the front end of the filter that is mounted inside the case and surrounds the porous pipe 13. Fixed vertically to fix the porous pipe 13 and the front support flange 20 to prevent the filter from being pushed to the front end; the rear end of the filter mounted inside the case 10 and surrounding the porous pipe 13 Fixing the porous pipe 13 perpendicularly to the part, and a rear support flange 30 for preventing the filter from being pushed out to the rear end; A metal foam filter 41 mounted between the die 20 and the rear support flange 30 and through which the exhaust gas flowing into the porous pipe 13 passes, or the shape of the metal foam filter 41 is changed to the original shape. A filter member 40 including a metal mat 42 or a jacket 43 which is formed in a net shape for maintaining durability and has durability, and surrounds the metal foam filter 41; and is mounted inside the filter member 40; The porous pipe 13 is formed with a plurality of holes 60 so that the exhaust gas can flow smoothly through the filter member 40 and be discharged, so that the gradient of the ventilation flow rate does not occur inside the porous pipe 13. As shown in the figure, a narrow pipe structure with a narrow width at the rear end of the porous pipe, an expanded pipe structure with a wide width at the rear end of the porous pipe, and a reduced ventilation area. The pore-regulated structure that makes the pores at the rear end inside the porous pipe small so that the flow rate can be evenly distributed even when the pressure at the rear end increases and the flow velocity increases, the particulate matter is porous A structure in which a cone 14 is inserted and installed in an internal space in which a plurality of holes are formed so that it can be uniformly collected inside the porous pipe, and particulate matter is uniformly collected inside the porous pipe In order to be able to include, it includes any one of structures in which the pyramid 15 is inserted and mounted in the internal space in which the plurality of holes 60 are formed.

  The functions of the main technical means of the automobile exhaust gas purifying filter device 100 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 22 as follows. .

  The case 10 includes an inlet 11 through which exhaust gas combusted from the engine flows into the porous tube-shaped pipe 13, and the exhaust gas flows into the internal porous tube-shaped pipe 13 and then passes through a filter to be discharged. A discharge port 12 is formed. The porous pipe 13 is formed with a plurality of polygonal through holes and is made of a metal material. Here, a conical cap 21 may be fastened to the upper end of the filter assembly in order to make the exhaust gas flowing into the inlet 11 smooth.

  As shown in FIG. 11 and FIG. 12, it is inserted and fixed inside the porous tube-shaped pipe 13 to generate a vortex in the exhaust gas flow, thereby reducing the exhaust gas speed and increasing the remaining time in the filter. The eddy current generating member 80 is attached, and the eddy current generating member 80 is vertically integrated integrally with the porous tube-shaped pipe 13 in the form of a plate-like thin film, and flows into the porous tube-shaped pipe 13. Since the exhaust gas collides with the plate-like thin film that is the vortex generating member 80 to generate a vortex, the exhaust gas speed can be reduced and the remaining time in the filter can be increased.

  The front support flange 20 is mounted inside the case and is fixed vertically to the front end portion of the filter surrounding the porous pipe 13 to prevent the porous pipe 13 from being fixed and the filter from being pushed out to the front end. To do. Since no through hole is formed in the front support flange 20, exhaust gas does not flow in the direction of the front support flange.

  The rear support flange 30 is mounted inside the case 10 and is fixed vertically to the rear end portion of the filter surrounding the porous pipe 13, and the porous pipe 13 is fixed and the filter is pushed out to the rear end. To prevent that. A plurality of through holes 31 are formed in the rear support flange 30 so that the exhaust gas that has passed through the filter member 40 can be discharged.

  As shown in FIG. 10, between the front support flange 20 and the metal foam filter 41 and between the rear support flange 30 and the metal foam filter 41, a metal wire mash having a similar thermal expansion coefficient to that of the metal foam, respectively. The sealing mat 70 is included.

  The filter member 40 is mounted between the front support flange 20 and the rear support flange 30, and is a laminated or wound metal foam filter 41 through which exhaust gas flowing into the porous pipe 13 passes, 6 and FIG. 10, the metal mat that surrounds the metal foam filter 41 is formed in a net shape that maintains the original shape of the metal foam filter 41 and has durability. 42 or jacket 43. The metal mat 42 is mounted on the front and rear surfaces to surround both sides of the metal foam filter 41. The surface porosity of the metal alloy constituting the metal foam filter 41 is 200 to 2500 μm, and the porosity is 88% ± 8%. The metal foam filter 51 is made by adding chromium and iron to an Ni base and alloying it.

  As shown in FIGS. 16 to 22, the metal foam filter 41 of the same type or different types is sewn and connected in the form of a repeated spiral, a sine waveform, a square wave, a circle One or a plurality of shapes, semicircular shapes, and X shapes are selected.

  As shown in FIGS. 13 to 15, when winding the metal foam filter 41, in order to improve the fastening of the filter assembly, the metallic fastening device guide 91 surrounding the metal foam filter 41 and the metallic fastening The apparatus guide 91 is fixed, and a metallic fastening device 90 that minimizes the deformation of the metal foam and reduces the loss rate of the metal foam is attached. The metallic fastening device 90 is fastened by using one or more. The metallic fastening device has a plurality of sharp tip portions 92 in the length direction of the metal foam, and the size of the tip portion 92 may vary depending on the characteristics of the foam.

  A plurality of holes 60 are formed in the porous pipe 13 mounted inside the filter member 40 so that the exhaust gas can flow smoothly through the filter member 40 and be discharged. In order to prevent the gradient of the aeration flow rate in the interior of the pipe, a narrow pipe-type structure (shown in FIG. 7) with a narrow width at the rear end of the porous pipe, and an expanded structure with a wide width at the rear end of the porous pipe (FIG. The pores that reduce the pores at the rear end inside the porous pipe so that the flow rate can be evenly distributed even if the ventilation area is reduced and the pressure at the rear end is increased to increase the flow velocity. An adjustable structure (shown in FIG. 9), a structure in which a cone 14 is inserted and mounted in an inner space where a plurality of holes are formed so that particulate matter can be uniformly collected inside the porous pipe (see FIG. 9). 1), particulate matter is porous pie Of including any one of the structures pyramid 15 the inner space in which a plurality of holes 60 are formed so as to be uniformly collected inside is mounted is inserted (shown in Figure 3).

  As shown in FIG. 5, the cone is stably supported on the front portion of the cone 14 mounted inside the porous pipe 13, and the flow rate of the exhaust gas flows uniformly into the porous pipe. A support member 16 is formed to enable it.

  Further, a partition 17 inserted in the rear end of the cone 14 installed in the middle of the porous pipe 13 or a partition 17 inserted in an intermediate portion formed so as to face the pyramid 15 facing the back is installed. The form to do is also possible. And, the inside of the one filter member 40 is divided into a plurality of filter parts by the partition 17, and various catalysts can be treated and installed in one filter member 40 for each part. Can be removed.

  Meanwhile, as another embodiment, a plurality of holes 60 are formed in the porous pipe 13 mounted inside the filter member 40 so that the exhaust gas can smoothly flow through the filter member and be discharged. The pores at the rear end of the porous pipe are made small so that the flow rate can be evenly distributed even if the ventilation area is reduced and the pressure at the rear end is increased to increase the flow velocity. A form in which the porous pipe 13 is formed is also possible. In order to adjust the exhaust gas amount by artificially creating a back pressure from the left side to the right side inside the porous pipe 13, that is, from the exhaust gas inlet to the exhaust outlet, Since the thickness is made different, that is, the flow rate is reduced, the flow rate is evenly distributed even if the ventilation area is reduced and the pressure at the rear end is increased to increase the flow velocity.

  It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and can be variously modified and changed without departing from the technical idea of the present invention. It is.

  As described above, the present invention can smoothly flow the exhaust gas flowing into the inflow port by inserting and installing the cone or pyramid inside the porous pipe into which the exhaust gas flows. The flow rate gradient does not occur, the particulate matter can be collected uniformly inside the porous pipe, and the shape of the metal foam filter is restored by surrounding the metal foam filter mounted inside the filter device with a metal mat. In this state, the durability of the filter device can be improved, and the inside of one filter member is divided into a plurality of filter parts by a partition, and a variety of catalysts are treated for each part, so that one filter can be processed. Since it can be installed in the member, various gases emitted from the exhaust gas can be removed, and the cone formed inside the porous pipe into which the exhaust gas flows By attaching a support member to the part, the cone is stably supported, so that the exhaust gas flow rate can flow uniformly into the porous pipe, and the ventilation flow rate inside the porous pipe into which the exhaust gas flows In order to prevent the occurrence of a gradient, the particulate matter (PM) is made uniform inside the porous pipe by forming it in a contracted or expanded structure that narrows or widens the rear end of the porous pipe. Even if the air flow area is reduced and the pressure at the rear end is increased and the flow velocity is increased, The flow rate is evenly distributed and the conical cap is fastened to the upper end of the filter assembly, so that the flow of exhaust gas flowing into the inlet can be made smooth, and the front flange and metal foam fill , And between the rear flange and the metal foam filter, by inserting a metal wire mash type sealing mat having a similar thermal expansion coefficient to that of the metal foam, respectively, welding is possible, and the smoke reduction device The DPF (Diesel Particulate Filter) can effectively improve the performance by effectively preventing the leakage of exhaust gas generated by long-term use, and the sealing mat is excellent in durability. Even if it passes, the flow path can be kept constant, and a vortex generating member is mounted in a porous tube having a polygonal air passage in the exhaust gas purifying device to thereby reduce the vortex flow of the exhaust gas. To make the flow distribution uniform, reduce the exhaust gas speed, and reduce the remaining time in the filter. Increase the collection probability by increasing the contact probability between the particulate matter (PM) and the metal foam filter, and use the metal fastening device to fasten the metal foam filter in the wound form As a result, the metal foam can be easily assembled, the deformation of the metal foam generated during the winding process can be minimized, the loss rate of the metal foam can be reduced, and when different types or the same type of metal foam are connected and wound, Various forms can be made for the convenience of the user by sewing in various forms such as line form, sine wave form, square wave form, circle form, semi-circle form, X-shape form, etc. Can be used in conjunction with.

DESCRIPTION OF SYMBOLS 100 Exhaust gas purification filter apparatus 10 Case 11 Inflow port 12 Discharge port 13 Porous pipe 14 Cone 15 Pyramid 16 Support member member 17 Partition 20 Front support flange 21 Conical cap 30 Rear surface support flange 31 Through hole 40 Filter member 41 Metal foam Filter 42 Metal mat 43 Jacket 50 Metal foam 51 Thread
60 hole 70 sealing mat 80 eddy current generating member 90 metallic fastening device 91 metallic fastening device guide 92 tip

Claims (12)

In a filter device for purifying automobile exhaust gas,
An inflow port through which exhaust gas combusted from the engine flows into a porous tube-shaped pipe and an exhaust port through which the exhaust gas flows into the internal porous tube-shaped pipe and then passes through a filter are formed. The case to be done;
A front support flange mounted inside the case and fixed vertically to a front end of a filter surrounding the porous pipe to prevent the porous pipe from being pushed to the front end;
Fixed to the rear end portion of the filter, which is mounted inside the case and surrounds the porous pipe, to fix the porous pipe and a rear support flange that prevents the filter from being pushed out to the rear end;
A metal foam filter that is mounted between the front support flange and the rear support flange and through which the exhaust gas that has flowed into the porous pipe passes or is wound, and the shape of the metal foam filter is the original state. A filter member comprising a metal mat or jacket surrounding the metal foam filter, the porous pipe mounted inside the filter member; A plurality of holes are formed so that the exhaust gas flows smoothly through the filter member and can be discharged, and the width of the rear end of the porous pipe is set so as not to cause a gradient in the air flow rate inside the porous pipe. Narrow-constricted tube structure, expanded tube-type structure with wide rear end of porous pipe, lower air flow area and greater pressure at rear end to increase flow velocity However, a pore-regulating structure that reduces the pores at the rear end of the porous pipe so that the flow rate can be evenly distributed, so that the particulate matter can be uniformly collected inside the porous pipe. A structure in which a cone is inserted and installed in the inner space where holes are formed, and a pyramid is inserted in the inner space where multiple holes are formed so that particulate matter can be uniformly collected inside the perforated pipe An exhaust gas purifying filter device for an automobile, comprising any one of the structures mounted on the vehicle.   The front portion of the cone mounted inside the porous pipe further includes a support member that stably supports the cone and allows the exhaust gas flow rate to uniformly flow into the porous pipe. The filter device for purifying an exhaust gas of an automobile according to claim 1.   2. The front support flange according to claim 1, wherein a through hole is not formed in the front support flange, and a plurality of through holes are formed in the rear support flange so that exhaust gas that has passed through the filter member can be discharged. A filter device for purifying automobile exhaust gas.   A partition inserted in a rear end portion of a cone attached to an inner middle of the porous pipe or a partition inserted in an intermediate portion formed so as to face the pyramid with the back facing thereto. 2. A filter device for purifying exhaust gas of an automobile according to 1.   The inside of the one filter member is divided into a plurality of filter parts by a partition, and can treat various catalysts for each part, can be installed in one filter member, and can remove various gases emitted from the exhaust gas, It is possible to make various exhaust gas after-treatment devices for DOC, DeNOx, DPF, SCR, LNT, Soot Capacitor, EGR catalyst filter, evaporator and electrostatic filter by using different types of catalyst for metal foam. The automobile exhaust gas purifying filter device according to claim 1.   The exhaust gas purification filter device for an automobile according to claim 1, wherein a conical cap is fastened to an upper end portion of the filter assembly in order to smooth the flow of the exhaust gas flowing into the inflow port. .   A sealing mat in the form of a metal wire mash having a thermal expansion coefficient similar to that of the metal foam is further included between the front flange and the metal foam filter and between the rear flange and the metal foam filter, respectively. Item 2. A vehicle exhaust gas purifying filter device according to Item 1.   It further includes an eddy current generating member inserted and fixed inside the porous tube-shaped pipe to generate a vortex in the flow of exhaust gas, thereby reducing the speed of the exhaust gas and increasing the remaining time in the filter. The automobile exhaust gas purifying filter device according to claim 1.   The eddy current generating member is vertically and integrally fixed with a porous tube-shaped pipe and a plate-shaped thin film, and the exhaust gas flowing into the porous tube-shaped pipe is a plate-shaped thin film that is a vortex generating member. The automobile exhaust gas purifying filter device according to claim 8, wherein a vortex flow is generated in collision with the vehicle to reduce a speed of the exhaust gas and increase a remaining time in the filter.   When winding the metal foam filter, in order to improve the fastening of the filter assembly, the metal fastening device guide surrounding the metal foam filter and the metal fastening device guide are fixed to minimize the deformation of the metal foam. The automobile exhaust gas purifying filter device according to claim 1, further comprising a metallic fastening device capable of reducing the loss rate of the automobile.   The metallic fastening device is fastened by using one or a plurality of metallic fastening devices, and the metallic fastening device has a plurality of sharp tip portions in the length direction of the metal foam, and the size of the tip portion is the size of the foam. The filter device for purifying an exhaust gas of an automobile according to claim 10, wherein the filter device can vary depending on characteristics.   The same type or different types of metal foam filters that are sewn and connected may be a spiral shape, a sine wave shape, a square wave shape, a circle shape, a semicircle shape, or an X-shape. The filter device for purifying an exhaust gas of an automobile according to claim 1, wherein the filter device is selected from one or more.