JPS58137424A - Filter apparatus for exhaust gas - Google Patents

Abstract

PURPOSE:To remove combustible fine particles efficiently, by arranging a self- current passing abd heat generating type heater to the upstream side of a filter. CONSTITUTION:A self-current passing and heat generating type heater 1 comprising a ceramic sponge like structure and a filter 2 are bonded under baking at each one end surfaces by a ceramic paste to form the interface 7 therebetween and form integral consitutiton. In addition, to the other end surface of the heater 1, a metallic electrode is formed as a metallized layer 3 and, to the other end surface of the filter 2, a metallic electrode is further formed as a metallized layer 4. With the metallized layers 3, 4, circular corrugated metal nets 5, 6 made of stainless steel are contacted in an electrically connected state. In addition, a lead wire 13 is electrically connected to the metal net 6 at a soldering part 13a and guided to the external part of an outer cylinder 9 through an insulator 11 to be connected to a power source E.

Description

[Detailed description of the invention]

The present invention relates to a filter device capable of removing combustible particulates contained in gas, particularly combustible particulates such as carbon contained in exhaust gas from automobiles, and more particularly to a filter device capable of removing combustible particulates such as carbon contained in exhaust gas from automobiles. J, I'm getting feverish.
The present invention relates to a filter device that efficiently burns filtered combustible particulates while maintaining their permeability. Conventionally, for example, as a pollution control measure, exhaust systems or exhaust systems have been used to remove particulate matter contained in the exhaust gas of automobile engines. Filters have been used as one of the purifying devices for flow systems, but after long-term use, carbon becomes 111% -([t i-+
11, rr, /, J loss is caused (rarely.) This deficiency is assumed to be caused by the fine particles of the τ filter. 4 (!) by heating with electricity, 1 part of 1110 (by heating with the combustion heat of the fuel, 1 part by heating with the combustion heat of the fuel, or by installing a high voltage electrode)
(Methods have been used to prevent clogging, such as heating with electricity, or using carbon fibers as filters and applying electricity to the carbon fibers to sinter the carbon particles.1 However, when using a 1mm wire (the photothermal surface W1 is small and the T energy efficiency is poor, and the 1mm wire is used),
= I tJ b It may be time-consuming, but the photothermal metal layer is 8.
- If the sea urchin is installed in a narrow and small area, the energy efficiency is poor, and the installation process is time-consuming. After starting the engine for a while, I added some carbon to the filter (
Don't let the waste particles burn

There are things that must be done / 1 Jita 1
゜Also, is the fuel nozzle, 1J, and high pressure discharge method special? I
J'N<r-3- Requires 1 unit of equipment, consumes most of 1 energy, and becomes fuel.
In addition, the problem of fire caused by fire and the loss of the filter due to electricity, and the problem of the fibers themselves disappearing due to combustion in those using horn-pond fibers, can be avoided. On the other hand, Hiramic's honeycomb 414 filter is known for similar applications (and compared to general filters, this filter has less IF power loss even if the filter is made finer by 1:1). t3] It is suitable for exhaust gas in automatic vehicles because it has a low density of I. After removing the filter and heat-treating the whole, the carbon particulates were burned out and IL < r < was not achieved. As a solution to these shortcomings, the porous ceramic filter was self-energized and heated!!;, i/, ：B is taken into consideration, and these carbon particles are dispersed and captured in the entire filter, and by energizing the filter before the loss of pressure becomes large, the carbon particles are removed. This is a type of filter device that burns and extinguishes the gas, but this one is also effective when the gas flows into the filter station -4-oka. In cases where outside air for internal combustion is being used for 10,000 seconds, the temperature is low, and the heat level of the filter (especially in the front of the nozzle) decreases, causing carbon particles to burn. It will remain...)”(,[
1) If the engine becomes clogged, the LVI
There is a possibility that carbon sintering 7J1 treatment will be necessary again. Book 5 to solve the above problem 1? , l1114'+
If the engine is left running, the carbon will remain burnt even when driving in the city, worsening the power loss. , with the aim of efficiently removing combustible particulates,
As a result of the careful design of the holes, the current device has been significantly changed to a filter device that has a self-energizing heating type heater with a large contact area with the υF gas and a self-energizing heating type filter arranged from the upstream direction of the exhaust gas flow. The present invention was completed by discovering that it is possible to completely filter and incinerate flammable particles under any circumstances. type)
Is there an IM structure 4j' with a small contact area with the exhaust gas on the upstream side of the router? This is an exhaust gas filter device equipped with a self-energizing heating type heater. Next, explanation will be given with reference to the figures. FIG. 1 and FIG. 2 show a first embodiment of the "Unexploded Ill" applied to an automobile exhaust gas filter. Here, 1 is a heater made of a self-energizing heating type ceramic cylindrical spongy MA structure, and 2 is a self-energizing heating type filter consisting of a short ramic cylindrical spongy structure. The heater 1 and the filter 2, which are made of a self-energizing heat-generating ceramic inner clamp-like structure as described in 10-10, are bonded together at one end surface by baking with Hiramic paste to form an interface 7,
-14i configuration. On the other end surface of the heater 1 (b), a metallic electrode is formed in contact with the metallized layer 3, and on the other end surface (l) of the filter 2, a metallic electrode is formed as the metalized layer 4. A circular corrugated wire mesh h16 made of stainless steel or the like is partially electrically connected to the metallized layer 3.4, and the wire mesh 5 is electrically connected to the wire wire 5 ( , L
The conductor 12 is electrically connected at the wire 11 portion 128 (
Then, the conductor 12 is pulled to the outside of the outer cylinder 9 through the insulator r-10, and connected to the power supply through the switch f14.
has been done. On the other hand, a conductive wire 13 is electrically connected to the wire mesh 6 at a brazed portion 13a, and the conductive wire 13 is guided to the outside of the outer cylinder 9 via the insulator F11 and connected to the power source F. In the configuration described above, a cylindrical laminate is formed by the wire mesh 5, the metallized layer 3, the heater 1, the roux 2, the metallized layer 4, and the wire mesh 6, and the inner cylindrical laminate and the conductor 12.13.
, the switch 14 and the power supply 1 are connected together to form a heating circuit, and the whole constitutes 1) a gas filter device. ItII body [Yoreramic KtI edge 1i]
1 Is it stored within El and is an external IP? 19 is insulated and in a close contact state 1.1, and then the 11 pieces 9f+ and 9b are installed (2 and J: are held in a predetermined position in the outer cylinder 9. - 7- The outer cylinder 9 is a part of the I)I trachea or υ1 gas recirculation pipe, and when this device & is attached to the exhaust pipe, the 1-stream side of the exhaust gas is the exhaust! - Manifold side, downstream side B has exhaust port side C. On the other hand, the exhaust gas recirculation pipe is equipped with a main purchaser (1) on the upstream side of the exhaust gas.
is the exhaust 1 to hold side, and the downstream side B is the intake manifold side. In the following configuration, the exhaust gas containing carbon particles from the engine passes through the manifold to the exhaust 1, and flows into the filter device from the upstream direction F, as shown by the dotted line. However, the exhaust gas passes through the wire mesh 5 and the metallized layer 1\3 as it is, and is delivered to the self-energizing heating type ceramic flocculent structure heater 1 with a large hole diameter, while containing carbon fine particles. , passes through heater 1. Next, the IJ1 debris is transferred to the interface 7 between the heater 1 and the filter 2.
The carbon particles contained in the gas are mostly captured by the self-energizing photothermal ceramic flocculent structure filter 2, which has small diameter pores 1. Then, the Cυ gas is passed through the metallized layer 4-8 = and the wire mesh 64, and the filter is removed from the IN outside I\1.
7111, heading downstream in direction 13,
1. After this bundling, the carbon fine particles - f131 are collected in the filter 2. At this point, turn on the switch 14.'a-3<L-
and (J Mari, wire mesh i at both ends of the cylindrical laminate), 0 (・
When energized, the wire mesh 6, metallized layer 4,) Clue 2° field [i 7.
] 4' (N flow flows, and the heater 1 and filter 2, which are self-energized and generate heat, generate heat.) Then, the exhaust gas first passes through the holes of heater 1 before being filtered by filter 2. During the passage, heat is absorbed from the hole wall jn1, resulting in a high temperature.
〒-)I 1), I of filter 2 to filter 21S1
J10,000 - The flow side is not cooled by the IJI gas, so the combustion extinction of carbon particles in the filter 2 is not inhibited, and the carbon particles are dispersed in the filter 2.
'ir: The carbon *Fn completed completely burned,
There is a possibility that the filter 2 will become clogged. The above-mentioned flocculent structure has an eel-sized hole (T in ¥), which allows carbon particles in the exhaust gas to be filtered out and passes through with the exhaust gas. ,1
・-3mm hole] tY /J of 1 < Appropriate fit, -
7'i, the fine particles in the exhaust gas are all filtered out (8), and a filter with a human-sized pore diameter that allows only the exhaust gas to pass through is selected for the filter, with a diameter of 0.1 to 1 m. ... hole [the diameter of the bottle is appropriate. Next, a second embodiment of the present invention is shown in Fig. It is a heater made of oak plantation, and 22 is made of a short cylindrical lake-like structure with self-energizing surface heat Qlj.
It is f le 9. Metallic electrodes are formed on the end faces of the kneading heater 21 and the filter 22 as metallized layers 23, 24, 25, and 26, respectively. - The surfaces are aligned with each other: The circular corrugated wire mesh 27 made of sea urchin and stainless steel is in contact, while the filter 2
20 A circular corrugated wire mesh 29 made of stainless steel or the like is in contact with one side of the metallized layer 26 so that its width overlaps, and depending on the case, each of the wire meshes 27 and 29 is partially metalized 11123.
．． It is electrically connected to 26 by a brazing number. Further, a circular corrugated wire mesh 2 made of stainless steel or the like is sandwiched between the other metallized layer 24 of the heater 21 and the other metallized layer 24 of the filter 22, and the front and back sides of the wire mesh 2 are in contact with the metallized layers 24 and 25, respectively. In this case, the wire mesh 28 is partially electrically connected to the metallization layer 24, 25 by brazing. On the other hand, conductive wires 30 and 331 are brazed to the wire meshes 27 and 29 at portions 32 and 33, respectively.
The conductor 30 is connected to one pole of the power source E via the switch 7, and is connected to the vehicle body between Tim F and the switch 7. On the other hand, the conductor 6b is connected to the other pole of the power source F. In the above configuration, the wire mesh 27, the heater 21, the wire mesh 28
A cylindrical laminated body is formed by the filter 22 and the wire mesh 29, and when the cylindrical laminated body is connected to the conductors 30, -11-31, the switch 34, and the power source F, a heating circuit is formed, and the entire r IJI' is It constitutes a filter device. The cylindrical laminate is housed in a ceramic insulating cylinder 35, inserted into an outer cylinder 36 in an insulated and tightly sealed state, and is inserted into an outer cylinder F7.
The flange 3 of the joint pipe 38 connected to the flange 36b of 136
Pressing L of the spring lug 19 disposed between 8a and the insulating ring 37
Due to the E force, the cylindrical laminate is pushed against the locking portion 35a of the insulating cylinder 35 via the insulating ring 37, and then the insulating cylinder 3
5 is supported by being biased toward a locking protrusion 36a attached to the inside of the outer cylinder 36. The outer cylinder 36 may be a part of the trachea or the exhaust gas recirculation pipe, or it may be formed into a unique shape as the outer cylinder of the exhaust gas filter device of the present invention and assembled into the exhaust pipe or the exhaust gas recirculation pipe. Including Δ, fBJ. If a wooden device is attached to the exhaust pipe, the upstream side F of IJI gas is from exhaust 1 to manifold side 1. The downstream side B is the exhaust 1] side. On the other hand, when this device is attached to the exhaust gas recirculation pipe, the upstream side F of the exhaust gas is the exhaust manifold 12
- The upstream side F3 is the intake manifold side. In the configuration A3, the exhaust gas containing carbon particles from the engine passes through the exhaust manifold as it is, as shown by the dotted line, from the flow direction F.
The exhaust gas flows into the filter device, but passes through the wire mesh 27 and the metallized layer 23 as it is, and reaches the self-energizing heating type ceramic flocculent structure heater 21 with a large hole diameter. Next, the exhaust gas passes through the other metallized layer 24 of the heater 21, and also passes through the wire mesh 28 and the metallized layer 25 of the filter 22. It reaches the ceramic spongy structure filter 22, where most of the carbon particles contained in the Jul gas are found in various places in the filter 22 at 1111.
captured. Thereafter, the 4Jl gas passes through the other metallized layer 26 of the 13L filter and the wire mesh 29, is discharged outside the filter device, and heads toward the downstream exhaust port direction B. In other words, the -13- particulate matter in the gas is dispersed and remains in the filter 22. At this time, by turning on the switch 34, electricity is applied between the wire meshes 27 and 29 at both ends of the cylindrical flilli body, and the wire mesh 29, the metallized layer 26, the filter 22, the metallized layer 25, the wire mesh 28, the metallized layer 24 , a current flows through the heater 21, the metallized layer 23, and the wire mesh 27, and the heater 21 and filter 2 are self-energizing and generate heat.
2 occurs. As in the first embodiment, the exhaust gas is first heated to a high temperature by the heater 21 before being filtered by the filter 22, so when the exhaust gas reaches the filter 22, the exhaust gas is heated upstream of the filter 22, especially the upstream side of the filter 22. Since there is no cold Ml, the burning and extinction of the O(Zuru) J-bon particulates in the filter 22 is not inhibited, and all the carbon particulates dispersed and captured in the filter 22 are completely combusted, and the filter 22 This prevents clogging. The diameter of the pores of these spongy structures is 1 to 3 m111 for the heater and -1/111 for the heater, as in the first embodiment.
For I-, 0.1-·ivn is appropriate. . Compared to the first embodiment, in this embodiment, if the same heater and filter are used, the heating effect and combustion effect of the calphonic particles are the same, but it is not necessary to directly connect the heater and the nozzle filter. Since there is no cylindrical laminate, it is easy to manufacture the cylindrical laminate. Next, a third embodiment of the present invention is shown in FIGS. 4 and 5. Here, 41 is "self-energizing heat generation"? 42 is a filter made of a self-energizing heat-generating ceramic cylindrical honeycomb-like structure; Metallic electrodes are formed as metallized layers /I3.14.45 and /I6 on the r-shaped end faces of the filter /12, respectively. Sandwiched between the metallized layer 71I4 of the heater 41 and the metallized IP1715 of the fluter 42, the front and back sides of the circular corrugated wire mesh 48 made of stainless steel or the like are in contact with the metalized layers 44 and 45, respectively, and in some cases the wire mesh 48 is partially -15- It is electrically connected to the metallized layers 44 and 45 by brazing (). Meta 5-(z layer'13) on the other grid-like end surface of the heater.
Is it a circular corrugated wire mesh made of stainless steel, etc. whose sides meet? If l is in contact and J, wire mesh 27
are partially electrically connected to the metallized layer 28a by brazing. Similarly, a circular corrugated wire mesh 7I9 made of stainless steel or the like is in contact with the metallized layer 46 on the other end surface of the filter/I2 so that the wire mesh 7I9 is in contact with the metallized layer 46 on the other end surface of the filter/I2.
9 is partially electrically connected to the metallized layer 46 by soldering. 11-, the conductor wires 57 and 58 are connected to the wire mesh 47 and 49 respectively (No. 1) part b7a, 5
It is electrically connected at 8a and led out to the outside of the outer cylinder 53 via the 11q element 59.00 in an insulating manner. The conductor 57 is connected to one pole of the power supply [l) via a switch 61; The FU source is grounded to the vehicle body between the switch 61. On the other hand, the conductor 58 is connected to the other pole of the power source. , wire mesh 48, spongy filter 42 and wire mesh 49
A cylindrical laminate is formed, and when the cylindrical 8!1 layer is connected to conductors 57, 58, switch 34, and 7F7 E, it becomes a heating circuit, and the whole constitutes a filter device for JJl gas. The cylindrical laminate is housed in a ceramic insulating cylinder I52, inserted into the outer cylinder 53 in an insulated and tightly adhered state, and the flange 56 of the connecting pipe 55 is connected to the flange 53b of the outer cylinder 53.
Due to the pressing force of the spring member 62 disposed between the insulating ring 5/I and the insulating ring 5/I, the locking portion 52a of the insulating cylinder 52 is
It is supported by being biased in the direction of a locking protrusion 53a provided inside the outer cylinder 53. The outer cylinder 53 may be a part of the exhaust pipe or the exhaust gas recirculation pipe, or it can be formed independently as an outer cylinder of the exhaust gas filter of the present invention and incorporated into the exhaust pipe or the exhaust gas recirculation pipe.
J: Yes. When this device is installed in the exhaust pipe, the first flow side F of the exhaust gas is the one exhaust manifold side, the downstream side [
3 is the υY vent side. On the other hand, if this device is installed in the exhaust gas recirculation pipe,
-17- The upstream side "B" of the exhaust gas is the ibgest manifold side, and the downstream side "B" is the intake manifold side. In the above configuration, the II gas containing carbon particles from the carrot passes through the ibgest manifold as it is. Then, as shown by the dotted line, upstream direction 1: flows into the filter device, but it passes through gold 147 as it is J/j
L-J, the exhaust gas reaches the self-energizing heating type relamic honeycomb structure heater 41, and passes through the conduction hole 51 separated by the wall 50 of the heater 41 while containing the carbon particles. Next, the exhaust gas passes through the wire mesh 18 and the metallized layer 45 of the filter 12, and reaches the self-energizing heating type ceramic spongy structure filter 42 with a small hole diameter, where the carbon contained in the exhaust gas is removed. Fine particles filter 112
The king's throat is captured at various points in the hole. after that,
The exhaust gas passes through the metallized layer 46 on the other side of the filter and the wire mesh 49, is discharged out of the filter device, and is directed toward the downstream exhaust port. In other words, jj− in ill gas
The fine particles are dispersed and remain in the filter 42. -18- Nowadays, switch 61 is turned on and l'il'j<
and wire meshes 47 and 11 at both ends of the cylindrical laminate.
), the wire mesh 49, the metallized layer 46,
Filter 42, metallized layer 45, wire mesh/I E3,
Metallized layer 44, heater 41, metalized If! i
Current flows through /13 and wire mesh /17, generating heater 711 and filter 42, which are self-energizing and heat generating. As in the first embodiment, the exhaust gas is first passed through the filter 42.
The conduction hole of the heater 41 before being filtered. 51, it absorbs 1J of heat from the wall 50. J:
When the exhaust gas reaches the filter 42, the humidity becomes high.
The filter 42, especially the upstream side of the filter 42, is not cooled by the IJI gas, and the combustion W1 of carbon particles in A3 in the filter 42 is reduced by t.
The carbon particulates dispersed and captured in the filter 42 are completely combusted and
No. 12: Clogging J: No clogging occurs. The size of the five conductive holes 51 of the heater 41 used here is 20 to 200 cells/in"-19
- It is appropriate to set the temperature to 11 to sufficiently heat the gas. Further, the diameter of each pore of the spongy structure of the filter 42 is 20 to 50 [L/i +1 (approximately 0.1 to 11I1
111 pore diameter) is suitable. In the third embodiment, compared to the 112th embodiment, the exhaust gas passage is much easier to pass through, so the pressure loss is smaller. In each of the embodiments described in 1-1, the spongy structure used as the heater or the filter is a self-energizing heat-generating conductive ceramic with communication holes distributed in the right direction. A large number of self-energizing heat generation≧vJ conductive ceramic linear Kento 8i structures, for example, felt-like or woven fabric-like molded bodies, can be used as filters or heaters. - [Manufacture of the following spongy structure In addition to producing by firing using a raw ceramic whose composition is blended so that it becomes spongy when fired, the method is, for example, carried out as follows. In addition to the ingredients, raw material fine powder such as aluminum-containing silica, Al-20
− Organic binders such as sodium ginate, ammonium alginate, polyvinyl alcohol, etc., and solvents such as water and ethyl alcohol are added and kneaded to make a slurry-like preparation, and a predetermined fineness is formed in the mixture. A plastic foam such as polyurethane having a predetermined shape is immersed, dried, and then fired at around 1600° C. in an air atmosphere or a nitrogen atmosphere. In the method for producing a spongy structure described in "-", after immersing a plastic foam having two types of fineness in a pre-bonded form in a slurry-like composition and drying it,
Alternatively, two types of foams may be immersed and dried separately, then bonded with a slurry-like mixture, and then fired to create a spongy structure (4 , can be made by VJ.The gold aluminous electrode means is made of a metal powder paste such as platinum on both end surfaces of a flocculent-like structure or a barcum-like structure.
Or, by baking a powder paste [・mixture of chives, etc. and 1117]
21 - formed. In this case, in particular, the spongy structure does not have to be formed on the entire end face, but may be formed in a lattice shape, striped shape, etc. In addition to the main components such as 1, carbide or molybdenum disilicide, fine raw material powders such as alumina and silica, organic binders such as sodium alginate, ammonium alginate, and polyvinyl alcohol, water, A mixture is prepared by adding a solvent such as ethyl alcohol and kneading, which is then mixed so that the cross-sectional shape of the through hole is a polygon such as a triangle, square, or hexagon, or a predetermined shape such as a circle or an ellipse. A raw honeycomb-like structure can be obtained by extruding through a die having a large number of slits to obtain a monolithic elongated object, and by cutting the elongated object into required lengths. Further, the shape of the conductive holes in the honeycomb-like 4 mm body can be selected from various shapes such as a square prism, a hexagonal prism, and a triangular prism. As mentioned above, the ceramic raw material used is silicon carbide (chemical formula: SiC) or molybou 22
- Those whose main component is F (chemical formula: Mo5iz) etc. are used, but in particular, those containing T:1-gden disilicide as a single component are used. It has excellent positive characteristics over the entire temperature range, making it easy to adjust the hot water temperature. For example, even if electrodes are placed at appropriate intervals on the circumference of A, J: is not possible. Case 8! When the 111° flow direction and the current direction are parallel, and the heater and filter are electrically connected in series, such as when electrodes are provided on both end faces of a single-layer structure. If the heater and filter are made of positive R1'l (!IJη) such as molybdenum disilicide, etc., if a self-energizing heat-generating type is used, the heater side, especially when the exhaust gas flows in.
Since the front surface has relatively low humidity, the electrical resistance of the heater decreases, and the amount of current increases as a whole.As a result, the filter part uses more light and heat, and the overall temperature does not decrease.
Carbon = 23 - Fine particles do not remain unburned and do not cause clogging. On the other hand, for those with negative characteristics, the electrodes are placed on the peripheral surface as described above, so that the current direction and the exhaust gas flow direction are at right angles, and the heater and -7- (ruter) are electrically parallel to each other. When the heater is connected to
As a result, the amount of current increases on the filter side, which is electrically connected in parallel with the heater, and the heat generation increases, so the overall temperature does not drop, the carbon particles do not remain unburned, and clogging occurs. Don't wake up. In addition, dispersing a catalytic metal such as platinum, a mixture or alloy of platinum and 1-]dium, or a mixture or alloy of platinum and palladium on the entire or partial surface of the porous filter, This is advantageous because carbon sintering 7JI can be carried out at lower humidity. This can be obtained, for example, by immersing the porous wall structure in a solution of catalytic metal or salt and then heating it at a relatively high temperature. - As explained, the exhaust gas noilter device 24 of the present invention
- According to the system, the exhaust gas can be quickly heated up in advance by a self-energizing heating type heater that has a large contact area with the exhaust gas, and the temperature inside the filter can be increased without reducing the leakage of the filter, especially the front surface of the filter. Since the combustion of carbon particulates is completely completed at -C, carbon particulates can be removed from the filter even while the car is in operation, preventing filter clogging and reducing engine output due to pressure loss at the filter part. : It is possible to prevent a drop in C. Next, regarding the comparative test with the conventional example). Comparative test The exhaust gas filter device was the same as that of the third embodiment with the specified specification shown in Table 1. , assuming that the flow rate of room temperature air is 1.5nf per minute as 111 gas flow rate,
Injected from the heater side (1.1 power loss, saturated power consumption and saturated temperature were measured. -26- As is clear from this combination, the saturation temperature at the front of the filter is (3
At 50'C, 600°C is the thirst required for carbon combustion.
In the comparative example, the temperature was 60°C at 550°C.
If the temperature is below 0°C, carbon fine particles remain unburned and form masonry, resulting in clogging.

[Brief explanation of the drawing]

Figure 1 shows 1) 1 gas filter Ii! of the present invention! 1lFi
Fig. 2 is a cross-sectional view of the 1flll embodiment of 171I of the present invention, Fig. 3 is a cross-sectional view of 171I of the second embodiment of the present invention. FIG. 4 is a sectional view of the third embodiment of the present invention, and FIG. 5 is a sectional view taken along line V-V in FIG. -27- 1, 21, /11...Self-energizing heating type heater 2.22
．． 42... Self-energizing heating type filter 5.6.27. ．．
28.29.47.48.49...Circular corrugated wire mesh 3.4.23.24.25.26.43.44.45.
46...Metallized layer 12.13,;30.31.57.58...Conducting wire 19
．． 62,...Spring material 8.35.52...Insulating tube agent Patent attorney Tsutomu Seitachi-28- Figure 1 Figure 3'+lIl. :,:,,',,l,,,',, :):,,: -
,. F-"-'r"'Z'rZ+:', + 0 "' 35a "'"ζ4 forward (-→11 Figure 4 Figure 5 Figure 7

Claims (1)

[Scope of Claims] 1. An exhaust gas filter device comprising a self-energizing heating type heater having a structure having a large contact area with It gas on the -1- flow side of a self-energizing heating type filter. 2. The exhaust gas filter device according to claim 1, wherein the heater comprises a honeycomb-like structure having a large number of through holes. 3. The exhaust gas filter device according to claim 1, comprising an asbestos-like structure in which the heater has 31 holes distributed in a distributed manner. 4. The exhaust gas filter device according to claim 1, wherein the heater comprises an aggregate structure of a large number of linear elements having communication holes distributed in a distributed manner. 5 Is the filter and heater separated?
・(Exhaust gas filter 'JS' according to claim 1 of claim 4: installation. 6 The filter and the heater have an integrated structure).
1 - Claim No. 1 Jr! The exhaust gas filter device described. 7. The exhaust gas filter device according to claim 1, wherein the filter and the heater are electrically connected in series. 8. The exhaust gas filter device according to claim 1, wherein the entire or part of the surface of the filter has IL1 of catalytic metal distributed thereon.