JP2000227020A - Dust collector for engine exhaust gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration of a motor for an exhaust auxiliary fan by arranging an opening a bag filter for collecting particles delivered from an engine toward a delivery port of exhaust gas from the engine. SOLUTION: Exhaust gas delivered from an exhaust pipe 1 in an arrow A direction passes an inside of an exhaust gas control unit, a part thereof flows from a side surface window in an arrow B direction, the rest thereof passes a penetrating hole of a first control plate, and flows in an arrow C direction. Exhaust gas of the arrow B, C directions are dispersed after buffer. Exhaust gas passes an inner surface of a filter part 30 for catching and collecting particles by means of auxiliary suction of an exhaust motor 43, and is purified. Exhaust gas is out to an inside of an external cover 41 for continuously arranged with an exhaust motor housing part 40, is advanced in an exhaust guide in an arrow E direction, and is delivered from an exhaust port 42b as exhaust gas wherein purification is completed. Since exhaust gas dispersed in the arrows B, C directions, dust collecting action is unified without aggregating exhaust gas to one position of a filter part 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine exhaust gas dust collecting apparatus, and more particularly to an engine exhaust gas dust collecting apparatus in which filters are made of inexpensive members.

[0002]

2. Description of the Related Art As is well known, in heat engines such as gasoline engines and diesel engines used in automobiles and the like,
Generally, energy is obtained by burning a petroleum-based fuel such as gasoline or heavy oil. In this case, fine particles such as sulfur oxides, nitrogen oxides, and carbon are emitted into the atmosphere as exhaust gas due to the combustion or incomplete combustion of the fuel, and this exhaust gas causes air pollution and causes pollutants such as asthma. It is one of the causative substances. On the other hand, various devices have been conventionally proposed as a removing device for reducing and discharging polluting substances in the exhaust gas. For example, JP-A-64-32
012, Japanese Utility Model Laid-Open No. 6-83915,
-141220.

[0003]

However, the above-mentioned conventional removing device is a relatively expensive material because a platinum catalyst or the like is used as a constituent material of the filter.
In addition, since the material is relatively bulky, a large space is required for storage in a warehouse or the like. Further, some of the conventional proposals have been proposed to improve exhaust efficiency and reduce the burden on the heat engine.
There is a proposal of a type combining a filter and an exhaust fan. However, since a motor for driving the exhaust fan is disposed in the exhaust passage of the exhaust gas, there is a possibility that the motor is forcibly deteriorated by the exhaust gas.

It is an object of the present invention to provide an engine exhaust gas dust collecting apparatus in which the material of the filter is inexpensive and which is not bulky.

Another object of the present invention is to provide an engine exhaust gas dust collecting apparatus in which a motor of an exhaust fan for auxiliary exhaust is not deteriorated by exhaust gas.

[0006]

According to the present invention, in order to solve the above-mentioned problems, an opening of a bag-like filter for trapping fine particles discharged from an engine is arranged toward an exhaust gas outlet of the engine. It is characterized by the following. Further, a bag-shaped filter for trapping fine particles discharged from the engine, and only a blade-shaped portion is disposed on the downstream side of the exhaust gas flow path of the bag-shaped filter, and a motor portion for driving the blade-shaped portion is provided with the exhaust gas. And an exhaust fan disposed outside the flow path.

[0007] In this way, an inexpensive material can be selected as the filter. For example, the filter can be formed in a folded state or in a bellows shape so that the filter does not become bulky when folded. It is also simple and convenient to use. Furthermore, only the exhaust motor blades are arranged in the exhaust gas flow path,
Since the motor section is installed at a position other than the exhaust gas passage, the exhaust motor is not deteriorated by the exhaust gas.
If the decrease in engine output due to the pressure resistance of the filter or the like is small, or if there is no or slight load on the combustion chamber of the exhaust gas, the exhaust motor may be omitted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An engine exhaust gas dust collecting apparatus according to the present invention will be described below based on an embodiment shown in the drawings.

[1] First Embodiment FIG. 1 is an exploded perspective view of an engine exhaust gas dust collecting apparatus H of the present embodiment, FIG. 2 is a side sectional view when the dust collecting apparatus H is assembled, and FIG. Is the exhaust gas control unit 2 in the dust collector H
0A and FIG. 4A and FIG.
FIG. 5 is a cross-sectional view taken along line IV-IV in FIG. As shown in FIGS. 1 and 2, an engine exhaust gas dust collecting apparatus H includes a pipe mounting portion 10 fixed to an outlet of a cylindrical exhaust pipe 1 of an automobile body (not shown), and a pipe mounting portion 10. A metal exhaust gas control unit 20 for dispersing the exhaust gas while preventing exhaust gas from being concentrated at one point while guiding the exhaust gas, a filter unit 30 for capturing and collecting fine particles contained in the exhaust gas, An exhaust motor mounting portion 4 having an exhaust motor 43 for efficiently discharging purified exhaust gas on an extension of a filter storage cover 41 that covers the filter portion 30.
0.

The pipe mounting portion 10 includes an outer cover 11 made of a metal plate having a rectangular tube-like appearance, a metal band 13 fixed to the exhaust pipe 1, and an L-shaped fitting 14 mounted on a vehicle body.
And an insertion fitting 41c provided on the outer cover 41 (FIG. 1).
In response thereto, an engagement fitting 15 and the like for fixing and holding a fixing plate 32 of the filter unit 30 described below with the opening end surface of the outer cover 11 are provided. Note that the outer cover 11 is not limited to the rectangular tube shape but may be changed to a cylindrical shape or another shape. The outer cover 11 has a role of a buffer chamber for reducing the pressure of the exhaust gas ejected from the exhaust pipe 1, and is provided with an insertion portion 21 a (FIG. 3) of the guide pipe 21 constituting the exhaust gas control unit 20 described in detail below. A stabilizing member 16 that presses the cylindrical portion 11a (FIGS. 1 and 2) to be inserted and a stopper 21b (FIGS. 3A and 3B) of the guide tube 21 described below to stably mount the guide tube 21.
(FIG. 2). As shown in FIG. 10, the stabilizing member 16 includes a square frame 16a fitted on the inner peripheral surface on the opening side of the outer cover 11, and a ring 1 fitted externally on the cylindrical portion 11a.
6b and a support member 16c for connecting the ring 16b to the four corners of the frame 16a. The frame 16a is shown in FIG.
0 is a square, but the shape is not limited to this, and the point is that the shape may be adjusted to the shape of the cylinder. As shown in FIG. 10, the support member 16c is connected to the frame 16a at the inner edge of the frame 16a so that the support member 16c does not hit the outer cover 11 when the stabilizer 16 is mounted on the outer cover 11. Also, the outer cover 1
The four sides of the end face 1 and the frame 16a and the fixing plate 32 (FIG. 1)
For each member disposed at a position to be clamped and fixed, a packing made of a flame-retardant material is attached to a necessary portion according to the situation in order to enhance the sealing performance.

The exhaust gas control unit 20 is configured as shown in FIG.
(B), as shown in FIGS. 4 (A) and 4 (B), a cylindrical guide tube 21 for guiding the exhaust gas and a right end face of the guide tube 21 are provided, and the inside of the guide tube 21 goes straight. The first control plate 22 having a passage hole 22a through which a portion of the straight exhaust gas passes is formed while receiving the exhaust gas pressure coming in and exhausting the gas through a side window (hole) 21c provided on the side surface. A second control plate 23 and the like, which are arranged at or near the central portion and similarly receive exhaust gas, are provided. Guide tube 2
Reference numeral 1 denotes an insertion portion 21a which is fitted to the exhaust pipe 1 and an outer cover 1
The guide tube 21 is brought into contact with an inner corner of the cylindrical portion 11a.
Is provided with a stopper 21b for preventing excessive insertion.

As another method of fixing the exhaust gas control section, a plurality of mounting holes 21g and 21h for mounting the stopper 21b to the outer cover 11 are formed in the stopper 21b as shown in FIG. I have. A locking pin (not shown) is provided on the outer cover 11 side, the diameter of the mounting hole 21g is large enough to allow the head of the locking pin to be inserted, and the diameter of the mounting hole 21h is the same as the diameter of the locking pin. It is smaller than the diameter of the pin head. The mounting hole 21g and the mounting hole 21h are the connecting hole 21k.
And a bulge 21m is formed at the edge of the communication hole 21k. When attaching the stopper 21b,
The locking pin is inserted into the mounting hole 21g and rotated counterclockwise in the figure to fix the locking pin at the mounting hole 21h via the communication hole 21k. Then, since the diameter of the mounting hole 21h is smaller than the head of the locking pin, the stopper 21b
Does not fall off, and bulges 21 at the edge of the communication hole 21k.
Since m is formed, the stopper 21b is prevented from rotating in the reverse direction and coming off from the locking pin, thereby being fixed.

As another fixing method, a screw 21f is inserted into the insertion portion 21a of the exhaust gas control unit 20 as shown in FIG.
May be formed, and the screw 21f may be fastened and fixed to a female screw (not shown) formed on the inner surface of the cylindrical portion 11a of the outer cover.

In FIG. 3A, the first control plate 22 has a disk shape and has a plurality of (four in the figure) exhaust gas passage holes 22a on the diagonal line. First control plate 22
The first control plate 22 and the second control plate 23 are fixed together by inserting a long screw 24 into the center of the first control plate 22 and screwing into a screw receiving member 25 (described later). The tip of the long screw 24 is formed in a conical shape, and its tip is slightly rounded. A ring-shaped inner surface projection 25a is formed at a slightly central portion of the guide tube 21 (FIG. 4), and a screw receiving member 25 for receiving the long screw 24 is attached to the inner surface projection 25a. The screw receiving member 25 is provided with a support arm 25b formed in a cross shape in connection with the ring-shaped inner surface projection 25a, and a screw receiver 25c in which a bag-shaped female screw is screwed is disposed at an orthogonal portion of the cross. The screw receiver 25c has a funnel-shaped portion 25d so that the tip of the long screw 24 can be easily screwed. The second control plate 23 has a disk shape, and a plurality of (four in the figure) exhaust gas passage holes 2 are arranged diagonally to each other.
3a. Then, the long screw 24 is inserted into the center as described above, and the second control plate 23 is fastened and fixed to the screw receiving member 25. At the time of this fixing, the passage holes 2 of the first control plate 22
The position of the hole 2a and the position of the passage hole 23a of the second control plate 23 are arranged so as to deviate from each other. This is for suppressing the straight traveling pressure of the exhaust gas. In the example of FIG. 3 (B), no control plate is disposed in the guide tube 21, and a large number of holes 21 p are formed on the side surface and a large number of holes 22 p are formed on the bottom surface of the guide tube 21. , 22p to prevent decentralized pressure of exhaust gas and concentration at one point to achieve dispersion.

The filter 31 constituting the filter section 30 (FIGS. 1 and 2) is made of a material (cloth-like material) made of a material (eg, glass wool or the like) that can withstand the high heat of exhaust gas.
To form a bag shape, and capture fine particles of sulfur oxides, nitrogen oxides, carbon, and the like by the fine pores of the cloth material. Since the filter 31 is foldable or formed in a bellows shape, the filter 31 is in an expanded state 30A when used (FIG. 1), and is folded or contracted 30B when stored in a warehouse or the like. Therefore, not only is it convenient to attach and detach, but also the storage space can be reduced. Reference numeral 32 denotes a fixing plate which is sandwiched and fixed between the opening end surface 41d of the outer cover 41 and the opening end surface 11d of the outer cover 11 of the storage section for storing the filter section 30 as described above (FIG. 2). If necessary, a somewhat elastic heat-resistant material packing is attached to both sides of the sandwiched portion of the plate 32 and the combined sandwiched portions (32, 16a).

The exhaust motor mounting portion 40 (FIG. 2) is provided with a rectangular cylindrical outer cover 41 having a length for accommodating the expanded filter 30A (FIG. 1), and is provided continuously downstream of the outer cover 41. An exhaust guide 42 for guiding the exhaust gas made of a metal plate, and an exhaust motor 43 composed of a sirocco fan arranged on the inlet side of the exhaust guide 42 are provided. By providing the exhaust motor 43, exhaust gas emission is promoted, and the load on the engine is reduced. Note that the outer cover 41 is not limited to the rectangular tube shape but may be a cylindrical shape or another shape. Outer cover 4
The first half of 1 covers the filter section 30 (FIG. 2), and the second half overlaps the first half of the exhaust guide 42. A heat-dissipating hole 41a is formed in the outer peripheral portion of the rear half of the outer cover 41, and a heat-dissipating iron plate 44a having a net made of a heat-resistant member is fixed on the left side surface (in FIG. 5) with screws 45. Similarly, an iron plate 44b having a large number of holes for heat radiation or an iron plate 44b for heat radiation having a net is fixed to the right side surface with screws 45 (FIG. 5). In FIG. 1 and FIG. 2, reference numeral 41b denotes a fastener which engages with a hook 11b fixed to the outer cover 11 and tightens (the lower fastener 41b is not shown).

The exhaust guide 42 is formed in a funnel shape (FIG. 2), and a blade 43b of an exhaust motor 43 is arranged at the entrance side of the funnel-shaped portion (FIG. 5). It is installed in a corridor 46 for efficiently dissipating heat formed by the cover 41. Except for the outer cover 41 and the exhaust guide 42 connected to the outer cover 41, except for an exhaust hole 42b (right end in FIG. 2) formed on the outlet side described below.
The exhaust gas is not leaked to the outside.
In order to prevent the exhaust gas from leaking from the exhaust guide 42 into the corridor 46, a packing formed of a heat-resistant member is arranged at the connection portion and tightly tightened with the screw 42a (FIG. 5). When the motor section 43a is installed in the corridor section 46, only the blade section 43b is exposed at the exhaust gas passage position, and the motor section 43a is not exposed to the exhaust gas.
a is not deteriorated by the exhaust gas. If there is a possibility that the radiated heat may be transmitted to the vehicle body, it is preferable to close some of the holes in the corridor 46 so that heat does not leak or heat is not transmitted.

FIG. 6 shows an iron plate 44 constituting the outer cover 41.
6A and 6B are exploded perspective views illustrating the arrangement of first and second plates 61 and 62 (FIG. 5) constituting the exhaust guide 42. As shown, the first plate 61 is composed of two individual iron plates 61a,
61b, the convex portion of the individual iron plate 61b is inserted into the concave portion of the individual iron plate 61a, and the non-combustible packing disposed in the concave portion and the convex portion maintains the airtightness, so that the exhaust gas passing through the exhaust guide 42 passes through the corridor. It does not leak to the part 46. Similarly to the first plate 61, the second plate 62 is constituted by individual iron plates 62a and 62b having concave portions and convex portions. The arrangement of the packing is determined as necessary.

The motor section 43a of the exhaust motor 43 (FIG. 5)
Is fixed to the heat-dissipating iron plate 44a with a plurality of (for example, about 3 to 5) screws 48. The right end (in FIG. 5) of the output shaft 43c of the exhaust motor is rotatably supported by a bearing 49,
The bearing 49 is fixed to the iron plate 44b by a screw 51.

Next, the operation of this embodiment will be described by dividing it into (1) assembly and replacement and (2) dust collection.

(1) Assembly / Replacement As shown in FIGS. 1 and 2, first, the cylindrical portion 11a of the outer cover 11 constituting the pipe mounting portion 10 is inserted into the exhaust pipe 1 of the automobile, and the band 13 is screwed with the screw 13a. Tighten and fix. Further, the method may be slightly changed and fixed. Next, the L-shaped bracket 14
(A fitting having a shape suitable for the place of use) is fixed to a convenient position (not shown) for attachment and detachment such as a rear side surface of the automobile or in a trunk with a screw (not shown). In this case, the degree of insertion into the exhaust pipe 1, the mounting angle with the exhaust pipe 1, and the like can be appropriately adjusted so that dust collection efficiency is considered to be good. Next, filter 3
1. The front surface (in FIG. 1) of the fixing plate 32 of FIG.
The opening end surface 41 of the outer cover 41 that is configured to be connected to the exhaust motor housing portion 40 by contacting the opening end portion 11d (FIG.
d is brought into contact with the rear side surface of the fixing plate 32, and the engaging fitting 15c (FIG. 2) in which the insertion fitting 41c (FIG. 1) is attached to the outer cover 11
Hang on. A concave portion having a tapered surface 15 a inclined toward the outer cover 11 is formed on the upper surface of the engagement fitting 15. The convex portion of the insertion fitting 41c has an inclined surface that coincides with the tapered surface, and the two covers 11, 41 can be easily combined simply by inserting the insertion fitting 41c into the concave portion. Then, the hook 11b of the outer cover is fastened to the fastening fitting 4
Firmly tighten with 1b. By doing so, the state shown in FIG. 2 is obtained. If the upper cover and the like near the opening of the outer cover 11 and the outer cover 41 are tightened with screws, bolts or the like (not shown), the unification of the two covers 11 and 41 can be further strengthened, and some vibration and impact It is well fixed and stable enough to withstand the heat.

FIG. 11 shows an example of the shape of the insertion fitting 41c. The insertion fitting 41c is obtained by turning a quadrangular pyramid (or a cone) upside down, cutting it in half by a plane perpendicular to the bottom surface and passing through the apex, The part is cut in parallel with the bottom surface. Although not shown, the corners of the cut portions are chamfered and rounded gently. FIG. 12 shows another example of the insertion fitting. In this example, the insertion fitting 71 is formed by cutting out a quarter of the sphere 72 of the insertion fitting 71.
Of course, the metal fitting is formed in a shape that matches this shape. On the other hand, the bottom of the engagement fitting 15 may be a through hole,
By doing so, dust and the like do not accumulate in the recess.

When the filter unit 30 is to be replaced, the fastening fitting 41b is released, and the outer cover 41 connected to the exhaust motor housing 40 is removed from the outer cover 11. Next, the filter unit 30, which has sufficiently trapped the particulates of the exhaust gas and has a reduced dust collection action, the stabilizing member 16 to which the particulates of the exhaust gas are attached, and the exhaust gas control unit 20 are taken out. Then, the inside of the outer cover 11, the stabilizing member 16, the exhaust gas control unit 20, the inside of the exhaust motor storage unit 40, and the like are cleaned or cleaned with a brush or the like to remove exhaust gas particulates and the like.
0. After attaching the stabilizing member 16, the new or cleaned filter unit 30 is sandwiched between the outer cover 11 and the outer cover 41. The procedure of this pinching is the same as in the above-described assembling. It should be noted that the stabilizing member 16 is omitted and the cylindrical portion 11 of the outer cover is formed by the screw 21f cut into the guide tube 21 itself.
(a) It may be fixed by tightening to a female screw (not shown) formed on the inner surface. Also, the mounting holes 21g shown in FIG.
The fixing method according to 21h may be used, or another fixing method may be used.

(2) Dust Collection In FIG. 2, the exhaust gas from the exhaust pipe 1 is discharged in the direction of arrow A. The exhaust gas passes through the inside of the exhaust gas control unit 20, and a part of the exhaust gas flows in the direction of arrow B from the side window 21c.
The rest passes through the passage hole 22a of the first control plate 22 and passes through arrow C.
Flows in the direction. The exhaust gases in the directions of arrows B and C are both diffused after buffering. The exhaust gas passes through the inner surface of the filter 31 and is purified by the auxiliary suction of the exhaust motor 43 composed of a sirocco fan, which will be described below. In the direction of arrow E in the inside 42, the exhaust gas is discharged from the outlet 42b as purified exhaust gas. Exhaust gas is B, C
Since the exhaust gas is dispersed in each direction, the exhaust gas does not concentrate at one location of the filter 31, preventing clogging at only one location, and equalizing the dust collecting action on the inner surface of the filter.

[2] Second Embodiment FIG. 7 is a side sectional view of a second embodiment, and FIG. 8 is an enlarged side sectional view of an exhaust gas control section 20A of the present embodiment. The difference between the present embodiment and the first embodiment is that, in the present embodiment, the guide tube 21a (FIG. 3) constituting the exhaust gas control unit is eliminated, and the first and second control plates 22, 23 are provided. Is positioned substantially at the center of the filter 31, and a mounting plate 21e made of a large flange-shaped heat-resistant material is provided, so that the exhaust gas does not flow toward the outer cover 11 and airtightness and fixing during mounting are performed. The stability is improved (FIG. 7). The mounting plate 21
The size of e is a dimension that is in close contact with the end inner peripheral surface 11d of the outer cover 11A. Reference numeral 22b denotes a handle that is gripped when attaching or detaching the exhaust gas guide tube, attaching or detaching the filter to or from the outer cover 41, or handling the exhaust motor mounting portion 40 or the like. In addition, since the exhaust gas outlet hole 21c of the guide pipe is arranged inside the filter 31, the size and shape of the outer cover 11A are
This is slightly different from the case of the first embodiment.

[3] Third Embodiment FIG. 9 is an exploded perspective view and a side sectional view of an exhaust gas control unit 20B according to a third embodiment. In the present embodiment, the guide tube is configured by inserting the inner tube 52 into the outer tube 51. Outer cylinder 51
Has a number of holes 51a as side windows, and the inner cylinder 52 has holes 52a as side windows at positions displaced from the holes 51a.
To form With this configuration, when the exhaust gas that has traveled inside the inner cylinder 52 is discharged in the side direction, the exhaust gas must pass through both the hole 52a of the inner cylinder and the hole 51a of the outer cylinder. In addition, it is possible to prevent the exhaust gas from going straight or concentrating at one point, and to spread and disperse the exhaust gas. The outer cylinder 51 and the inner cylinder 52 have a role and purpose of preventing pressure applied to the filter 31 and further dispersing the same. According to the above configuration,
The exhaust gas particles that have been decomposed and adhered can be easily removed. Further, the exhaust gas control unit 20B shown in FIG.
Is fixed by the method shown in FIG.
What is necessary is just to make b large like a collar.

[4] Fourth Embodiment In the fourth embodiment, as shown in FIG. 13, the guide tube is formed in a cylindrical shape. That is, FIG. 13A is of a double type, and the guide pipe 81 for exhaust gas buffering includes an outer cylinder 82 and an inner cylinder 83 arranged inside the outer cylinder 82. Although a plurality of holes are formed in each of the cylinders 82 and 83, the positions of the holes are alternated between the outer cylinder 82 and the inner cylinder 83. Each of the cylinders 82 and 83 is made of a sheet-like material, and is made of a material that can withstand heat and pressure of exhaust gas. The cylinders 82 and 83 are fixed to a mounting plate 84, and the mounting plate 84 is sandwiched between the outer cover 11 and the outer cover 41. FIG. 13B shows a single type guide tube 85 having a large number of holes as a whole.

In the above embodiment, the case of an automobile has been described. However, it goes without saying that the present invention can be applied to an engine using petroleum-based fuel, such as a fixed-type generator using gasoline or a cultivator. Further, although the case of the sirocco fan has been described in the present embodiment, a general fan of a type in which the blade portion and the motor portion are disposed in the exhaust guide 42 if sufficient measures are taken to prevent the deterioration of the motor portion. Good.

[0029]

As described above, according to the present invention, since the filter is formed of a bag-like member (for example, a heat-resistant cloth), the filter can be formed at low cost and does not become bulky. Also, the dust collection effect is very good. Further, since only the blades of the exhaust motor provided in the exhaust gas passage are arranged, the drive motor of the exhaust motor is not deteriorated by the exhaust gas. Also, handling such as disassembly, cleaning, and assembly becomes easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is an assembled sectional view of the first embodiment.

FIG. 3A is a perspective view of an exhaust gas control unit for guiding exhaust gas according to the first embodiment, and FIG. 3B is a perspective view showing a modification.

FIG. 4 is a diagram showing a main part of an exhaust gas control unit,
(A) is a front view, (B) is a side sectional view.

FIG. 5 is a sectional view taken along line IV-IV in FIG.

FIG. 6 is an exploded perspective view of a motor mounting portion according to the first embodiment.

FIG. 7 is an assembled sectional view of a second embodiment of the present invention.

FIG. 8 is a side sectional view of an exhaust gas control unit according to a second embodiment.

FIG. 9 is an exploded perspective view and an assembled side view of an exhaust gas control unit according to a third embodiment of the present invention.

FIG. 10 is a perspective view of a stabilizer for attaching a guide tube.

FIG. 11 is an enlarged perspective view of an insertion fitting.

FIG. 12 is a view showing another example of the insertion fitting.

FIG. 13 is a perspective view showing another example of the guide tube.

[Explanation of symbols]

 H Engine exhaust gas dust collector A to E Exhaust gas flow path 1 Automobile exhaust pipe 10 Pipe mounting section 11 Outer cover 20 Exhaust gas control section 30 Filter (bag-shaped filter) 40 Exhaust motor housing section 41 Outer cover 42 Exhaust guide 43 Exhaust motor (sirocco fan) 43a Exhaust motor unit 43b Exhaust motor blade

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 28, 1999 (1999.9.2)
8)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (10)

[Claims] An exhaust gas collecting apparatus for an engine, wherein an opening of a bag-like filter for trapping fine particles discharged from an engine is arranged toward an exhaust gas outlet of the engine. 2. A bag-like filter for trapping fine particles discharged from an engine, and a blade portion only disposed downstream of an exhaust gas flow path of the bag-like filter, and a motor unit for driving the blade-like portion. An exhaust gas collecting apparatus for an engine, comprising: an exhaust fan disposed outside the exhaust gas passage. 3. The exhaust gas collecting apparatus for an engine according to claim 1, wherein the bag-shaped filter is formed in a folded state or in a bellows shape. 4. The engine exhaust gas dust collecting apparatus according to claim 1, wherein said bag-shaped filter is configured to be detachable. 5. An exhaust fan having only a blade portion disposed downstream of an exhaust gas flow path from an engine, and a motor unit for driving the blade portion being removed from the exhaust gas flow channel. An engine exhaust gas dust collecting device. 6. The exhaust gas collecting apparatus according to claim 2, wherein the exhaust fan is a sirocco fan. 7. An exhaust gas collecting apparatus for an engine according to claim 1, further comprising an exhaust gas control unit for preventing exhaust gas from concentrating at one point and dispersing the exhaust gas while guiding the exhaust gas before the bag-shaped filter. . 8. An engine exhaust gas collecting apparatus according to claim 7, further comprising a stabilizing member for stably fixing said exhaust gas control section to an exhaust pipe of a vehicle. 9. A pipe mounting portion fixed to an exhaust pipe of a vehicle,
A filter accommodating section for accommodating a bag-shaped filter for trapping particulates discharged from the engine, an insertion fitting provided on one of the pipe mounting section and the filter accommodating section, and an engagement fitting receiving the insertion fitting on the other. An exhaust gas collecting apparatus for an engine exhaust gas, wherein the pipe mounting portion and the filter housing portion are detachably combined by engaging the insertion fitting and the engagement fitting. 10. An exhaust gas passage in which the wing-shaped portion is disposed is formed by a first plate and a second plate, and the first plate and the second plate are respectively connected to two pieces. The exhaust gas dust collecting apparatus according to claim 2, wherein the connection is performed by engaging a concave portion and a convex portion formed on each individual piece.