JPS5963316A - Exhaust gas purifier - Google Patents

Abstract

PURPOSE:To ensure a longer service life of an exhaust gas purifier without need of removing a plurality of refreshable collectors which collect solid particulates in exhaust gas of an engine by changeably applying them as one for usage in collecting them and as another to be refreshed. CONSTITUTION:A plurality of refreshable collectors 10 and 11 are mounted via a holder 3 on a rotary shaft 2 inside an external casing 2. The shaft 2 has a pinion 4 at one end thereof and the collectors 10 and 11 are capable of being turned by lateral movement of a rack 5. The upper one of the collectors 10 and 11 is connected to an exhaust gas pipe of. Internal combustion engine, serving as a collector while the lower one is refreshed because solid particulates collected thereby is burnt by combustion gas which is induced therein from a combustor 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas purification device that filters and purifies exhaust gas from an internal combustion engine, and more particularly to an exhaust gas purification device in which a collector for removing solid substances such as soot from the exhaust gas is switched.

Conventionally, in order to collect solid substances such as soot in the exhaust gas of an internal combustion engine and purify the exhaust gas, for example, a non-airtight ceramic body was housed in a cylindrical body sealed with both end plates having gas circulation holes. A regenerator is installed in the exhaust gas pipe, and the collected solids are burned and regenerated using high-temperature gas.
It has been proposed to regenerate high-temperature combustion gas from a combustor by blowing it into a collector, and at the same time remove solids from internal combustion engine exhaust gas using the same collector.

However, it is difficult to realize the optimal conditions for regenerating the dust collector using the above-mentioned conventional method, and there is a drawback that solid matter gradually remains in the collector.

The present invention has been made in view of the above, and an object of the present invention is to provide an exhaust gas purification device that eliminates the above-mentioned drawbacks.

This purpose, according to the present invention, includes a plurality of regenerator collectors, and introduces engine exhaust gas into one of the plurality of collectors to bring the other collectors into a regenerating state. , a switching means for switching between the first collector and one of the collectors other than the first collector at predetermined intervals; This is achieved by switching the collectors.

The present invention will be explained below using examples.

FIGS. 1(a) and 1(b) are a sectional view and a front view showing one embodiment of the present invention.

Reference numeral 1 denotes an outer case, which is fixed to, for example, an automobile body. A shaft 2 is rotatably mounted inside the outer case 1, and a holder 3 is fixed to the shaft 2. A pinion 4 is attached to one end of the shaft 2. A rack 5 that meshes with a pinion 4 is slidably mounted on the outer case 1. 6-1 and 6-2
is a guide having a stopper and guides the movement of the rack 5. One end of the cables 7 and 8 is fixed to each end of the rack 5, and the other ends of the cables 7 and 8 are extended into the driver's cab, and each is attached to a knob provided in the driver's cab. It is fixed.

On the other hand, the holder 3 includes recyclable collectors 10 and 11 made of non-airtight ceramic material or the like and housed in a cylinder sealed with both end plates having gas flow holes.
They are fixed facing each other with the two sides in between. Collector 10 and 1
Suction pipes 12 and 13 are fixed to one side of the collector 1, respectively, and discharge pipes 14 and 15 are fixed to the other side of the collectors 10 and 11, respectively. The suction pipe 12 faces and abuts against the internal combustion engine exhaust gas pipe 16 within the outer case 1, so that the collector 1o having the suction pipe 12 and the discharge pipe 14 is interposed in the internal combustion engine exhaust gas pipe, and
The exhaust pipe 14 is provided so as to face and abut against the internal combustion engine exhaust gas pipe 17 within the outer case 1, and the suction pipe 12 guides combustion gas from the combustor 18 by rotating the shaft 2 by 180 degrees. The exhaust pipe 14 is set so that the combustion gas pipe 20 and the exhaust pipe 14, which are in contact with the combustion gas pipe 19 facing each other inside the outer case 1 and communicated with the exhaust gas pipe 17 outside the outer case 1, are in contact with each other inside the outer case 1. . Similarly, the suction pipe 13 and the exhaust pipe 15 of the collector 11 are respectively opposed to the combustion gas pipes 19 and 20, respectively, and by rotating the shaft 2 by 180 degrees, the internal combustion engine exhaust gas pipe 16
and 17, respectively, so as to face each other separately.

The combustor 18 burns, for example, fuel oil by a known method through internal combustion operation, and discharges high-temperature combustion gas.

In one embodiment of the present invention constructed as described above, when the collectors 10 and 11 are located at the positions shown in FIG.
The solid matter in the internal combustion engine exhaust gas is collected and purified by the collector 10, and the purified internal combustion engine exhaust gas passes through the exhaust pipe 14 and the exhaust gas pipe 17. be discharged. On the other hand, the combustion gas from the combustor 18 is led to the collector 11 through the combustion gas pipe 19 and the suction pipe 13, and the solid matter collected from the internal combustion engine exhaust gas present in the collector 11 is combusted and The collector 11 is regenerated. Combustion gas discharged from the collector 11 is discharged through an exhaust pipe 15 and a combustion gas pipe 20.

Then, when the collector 10 is filled with solid matter, the cable 8 is moved a predetermined distance in the direction of arrow B via the knob. As a result of this movement, the shaft 2 is driven by the rack 5 and the pinion 4 and rotates 180 degrees clockwise from the state shown in FIG. By this rotation of the shaft 2, the collectors 10 and 11 are switched, and the collector 11 is replaced with the internal combustion engine exhaust gas pipes 16 and 1.
The solid matter in the internal combustion engine exhaust gas is collected by the collector 11. In this state, the collector 10 is connected to the combustion gas pipes 19 and 20.
The combustion gas from the combustor 18 is guided to the collector 10, and the collected solids present in the collector 10 are combusted and sent to the collector 10. 10 will be played.

In addition, when the collector 11 is filled with solid objects, by moving the cable 7 a predetermined distance in the direction of the arrow via the knob, the shaft 2 is moved 180 degrees by the rack 5 and the pinion 4. Rotate counterclockwise. Due to this rotation, the collectors 10 and 11 are brought back to the state shown in FIG.
The collector 10 is then rotated in the counterclockwise direction, and solid matter in the internal combustion engine exhaust gas is collected by the regenerated collector 10, and the collector 11 is regenerated.

Therefore, there is no inconvenience of removing the collector 10 one by one and replacing it with the collector 11, and since the collectors 10 and 11 can independently collect and regenerate the debris in the internal combustion engine exhaust gas, Optimum conditions for regeneration can be achieved, and solid matter will no longer remain and disappear little by little.

Furthermore, in the embodiment of the present invention described above, the case where the cables 7 and 8 are independently moved manually via the respective knobs has been exemplified, but the other end of the cable 7 and the cable 8 are The other end may be connected to the other end, and the connected cable body may be driven a predetermined distance in the direction of arrow A or B by using a pulse motor, for example, by controlling the rotational direction of the pulse motor. Furthermore, collectors 1o and 1
1 may be determined by a timer. The regeneration conditions for the collector during freezing and regeneration and the setting of the timer may be determined based on the operating state of the internal combustion engine.

Next, a modification of the embodiment of the present invention will be described.

FIG. 2 is a sectional view and a cc parent view showing a modification of one embodiment of the present invention.

A shaft 102 is rotatably mounted inside the outer case 101. 1
03 is a holder having an equilateral triangular cross-sectional shape, and the holder 103 is fixed to the shaft 102 so that the shaft 102 is located at the center of the cross-section of the holder 103. A gear 104 is attached to one end of the shaft 2. A pulse motor 121 is fixed inside the outer box 101, and a pulse motor 121 is fixed inside the outer case 101.
A gear 105 meshing with the gear 104 is attached to the rotor shaft of the rotor, and the shaft 102 is driven to rotate by the rotation of the rotor of the pulse motor 121.

Collectors 122 to 124 are fixed to each outer circumferential surface of the holder 103, respectively. Suction pipes 125, 126, 127 are connected to the holder 103 at one end of the collectors 122 to 124.
The collectors 122 to 124 have discharge pipes 128, 129, and 130 at the other ends of the collectors 122 to 124.
The suction pipes 125 to 127 are respectively opposed to each other and fixed to each other with the pipes 124 in between.

Collector 124 with suction pipe 127 and discharge pipe 130
The suction pipe 12 is interposed in the internal combustion engine exhaust gas pipe.
7 faces and abuts against the internal combustion engine exhaust gas pipe 16 inside the outer case 101, and the exhaust pipe 130 contacts the internal combustion engine exhaust gas pipe 17.
and are provided so as to face each other and come into contact with each other inside the outer box 101.

Further, the combustion gas pipe 19 from the combustor 18 branches into combustion gas pipes 19-1 and 19-2 on the way, and the combustion gas pipe 19-1 faces and abuts the suction pipe 125 inside the outer case 101. The combustion gas pipe 19-2 is provided within the outer case 101 so as to face and abut against the suction pipe 126. Further, the combustion gas pipe 20 communicated with the hanging gas pipe 17 branches into combustion gas pipes 20-1 and 20-2 in the middle, and the combustion gas pipes 20-1 and 20-2 are connected to the outer case 101.
The discharge pipes 128 and 129 are provided so as to face each other and come into contact with the discharge pipes 128 and 129, respectively.

In one embodiment of the present invention constructed as described above, the pulse motor 121 is driven to rotate, for example, by 120 degrees in the opening direction at predetermined intervals from the position shown in FIG.

By rotating the pulse motor 121 by 120 degrees, the collectors 122, 123, and 124 are rotated by 120 degrees while maintaining their relative positions.
, ], 22, 123, 124, . . . at predetermined intervals, the internal combustion engine exhaust gas is introduced into the collector, and the solid substances in the internal combustion engine exhaust gas are collected. Further, the state gas of the combustor 18 is introduced into the collector to which internal combustion engine exhaust gas is not introduced, and the collector is regenerated.

Further, the cycle of rotationally driving the pulse motor may be set by a timer as in the case of one embodiment of the present invention, and the regeneration conditions of the collector and the setting of the timer are determined depending on the operating state of the internal combustion engine. You can do it like this.

Next, other embodiments of the present invention will be described.

Another embodiment of the present invention is an example in which a collector is provided and the collector inserted into the internal combustion engine exhaust gas path and the combustion gas path of the combustor is changed by switching the piping path.

FIG. 3 is a system diagram showing another embodiment of the present invention.

The internal combustion engine exhaust gas pipe 16 is branched into exhaust gas pipes 16-1 and 16-2, the exhaust gas \f1G-] is connected to the suction pipe 12, and the exhaust gas pipe 16-2 and the suction pipe 1:3 are connected. , internal combustion engine 1 allows exhaust gas to be introduced into the collector 10.11. In addition, the combustion gas pipes 19 are connected to combustion gas pipes 19-1 and 19-.
1 branch, combustion gas pipe 19-1 and exhaust gas pipe 16-
2 and the combustion gas pipe 19-2 and the exhaust gas pipe 16-1.
The combustion gas from the combustor]8 is collected by the collector 10.
11.

On the other hand, in the middle of each of the exhaust gas pipes 16-1 and 16-2, on/off valves 25 are interlocked and driven in opposite directions.
and 26 are provided separately.

An on-off valve 27 is provided in the middle of the combustion gas pipe 19-1, and is operated in conjunction with the on-off valve 25 and in the same direction as the on-off valve 25. An on/off valve 28 is provided which is interlocked with the on/off valve 26 and driven in the same direction as the on/off valve 26.

Further, the exhaust pipe 14 is connected to an exhaust gas pipe 17, and the exhaust pipe 15 is connected to the exhaust gas pipe 17 via a combustion gas pipe 20.

In another embodiment of the present invention constructed as described above, it is assumed that the on/off valves 25 and 27 are now controlled to be in the on state. Therefore on-off valves 26 and 2
8 is controlled to be in the off state. As a result, the internal combustion engine exhaust gas is guided to the collector 10, solid matter in the internal combustion engine exhaust gas is collected by the collector 10, and the purified internal combustion engine exhaust gas is discharged through the exhaust gas pipe 17. On the other hand, the combustion gas from the combustor 18 is guided to the collector 11 and
The collected solids present in the collector 11 are burned and the collector 11 is regenerated. Note that exhaust gas from the collector 11 is discharged via an exhaust gas pipe 17.

Furthermore, if the on/off valves 25 and 27 are controlled to be in the off state, the on/off valves 26 and 28 are in the on state.

As a result, the collectors 10 and 11 are switched, the internal combustion engine exhaust gas is introduced into the collector 11, solids in the internal combustion engine exhaust gas are collected, and the combustion gas from the combustor 18 is collected. The collected solids introduced into the collector 10 and present in the collector 10 are burned, and the collector 10 is regenerated.

In this case, the on/off valves 25 to 28 may be electrically driven on/off valves or pneumatically driven on/off valves.

Furthermore, the switching timing of the on/off valves 25 to 270 may be switched at predetermined intervals using a timer or the like, or may be determined based on the operating state of the internal combustion engine.

Next, a modification of another embodiment of the present invention will be described.

FIG. 4 is a system diagram showing a modification of another embodiment of the present invention.

The internal combustion engine exhaust gas pipe 16 branches into exhaust gas pipes 16-1, 16-2 and 16-3, and the combustion gas pipe 19 is connected to the combustion gas pipe 1.
It is branched into 9-1, 19-2 and 19-3. The exhaust gas pipe 16-1 and the combustion gas pipe 19-1 are connected to the intake pipe 125, the exhaust gas pipe 16-1 is provided with an on/off valve 141, and the combustion gas pipe 19-1 is provided with an on/off valve 142. The internal combustion engine exhaust gas or the combustion gas from the combustor 18 can be selectively introduced into the exhaust collector 122 by switching between the on-fist off valves 141 and 142.

In addition, the collector 123 is configured in the same manner with an exhaust gas pipe 16-2, combustion gas pipe 19-2, and on/off valves 143 and 144, and the collector 124 is configured with a rainbow exhaust gas pipe 16-3.
, combustion gas pipe 19-3, and on/off valves 145 and 146.

The exhaust pipe 128 of the collector 122 is connected to the exhaust gas pipe 17 , and the exhaust pipe 129 , 130 of the collector 123 , 124 is connected to the exhaust gas pipe 17 via the combustion gas pipe 20 .

On the other hand, switches 147 to 14 are connected between the power supply 1V and ground.
Connect resistors 150 to 152 through 9, and connect resistors 150 to 152 through
A voltage of 152 is supplied to a resistor 153. register 1
The number set in register 153 is supplied to the shift register 155 via a switch 154 which is switched in conjunction, and the number set in register 153 is supplied to the shift register 155 by switch 154.
Ft, n, possible configuration. The shift register 155 is configured so that the highest bit can be shifted to the lowest bit.

Each bit output of the shift register 155 is on-
The off valves 141, 143, and 145 are supplied separately, and each bit output of the shift register 155 is supplied to the inverter 1.
On and off valves 142.14 through 56 to 158 separately
4.146. The on/off valves 141 to 146 are controlled to be in an on state when a high potential signal is supplied, and are controlled to be in an off state when a low potential signal is supplied.

In a modification of the other embodiment of the present invention configured as described above, one of the switches 147 to 149 is selected to determine the collector to which internal combustion engine exhaust gas is first introduced at the start of operation. Set to on state. In this modification, the case where the switch 149 is turned on is illustrated. By turning on the switch 147, “Ool” is placed in the register 153. Following this setting, the switch 154 is turned on for one moment. As a result, the number “001” in register 153 is shift register 1.
55 and 001 is placed in the shift register 155. On the other hand, when the switch 154 is turned on, a timer (not shown) starts measuring time.

By setting "001" to the shift register 155, the on-off valves 141, 143 and 146 are turned off, and the on-off valves 142, 144 and 145 are turned off.
turns on. In this state, internal combustion engine exhaust gas is introduced into the collector 124 through the on/off valve 145, and the solid matter in the internal combustion engine exhaust gas is collected by the collector 124.

The combustion gas from the frozen combustor 18 is removed from the on/off valve 142.
144 into the collectors 122, 123, respectively, and the collectors 122, 123 are in a regenerating state.

Then, when a predetermined period of time has elapsed since the switch 154 was turned on, a shift pulse is supplied to the shift register 155 by the timer.

Therefore, the number set in the shift register 155 is set to "010", the on-off valves 141, 144 and 145 are turned off, and the on-off valves 142, 143 and 146 (are turned on), and the collector is turned off. 122.124 is in playback state,
The collector 123 is switched to a state where it collects solid objects from the exhaust gas of the internal combustion engine.

Then, when a predetermined time has elapsed from the above, the timer shift halt is generated. Due to this shift pulse, the number set in the shift register 155 becomes 100". Since the number set in the shift register 155 becomes 100", the on/off valves 141, 144 and 146 are turned on, and the on/off valves 142. 143 and 145 are in the off state, collectors 123 and 124 are in the regeneration state, and collector 122 is in the regeneration state.
is switched to a state where solid matter is collected from internal combustion engine exhaust gas.

As mentioned above, the saturator that collects solid substances in the internal combustion engine exhaust gas every shift pulse is 124.123.122.124,
. . . are sequentially switched at a predetermined period, and the other collectors are switched to the regeneration state. Further, the setting cycle of the timer may be determined depending on the engine operating state, etc., as in the case of 5 in the above-described embodiment.

As explained above, according to the present invention, a plurality of collectors and one
A switch for introducing engine exhaust gas into the collector and bringing the other collectors into a regeneration state, and switching between the first collector and one of the other collectors at predetermined intervals. provide means,
In order to switch the collector that collects solids in engine exhaust gas at predetermined intervals, it is no longer necessary to use the same collector to simultaneously collect solids from engine exhaust gas and regenerate it. It becomes possible to set the regeneration conditions to the optimum conditions, and there is no possibility that the same substance that has been collected little by little remains in the collector.

Furthermore, the inconvenience of removing and replacing the collector one by one is eliminated.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are a sectional view and a front view showing an embodiment of the present invention. FIGS. 2(a) and 2(b) are a sectional view and a CC parent view showing a modification of one embodiment of the present invention. FIG. 3 is a system diagram showing another embodiment of the present invention. FIG. 4 is a system diagram showing a modification of another embodiment of the present invention. 1 and 101... Outer box, 2 and 102... Shaft, 3 and 103... Holder, 10.11.122.123 and 124... Collector, 18 - Combustor, 12 Tobals motor, 25-28.141 ~146・On/off valve,
153 register, 155... shift register, 15
6-158 Inverter. Patent applicant: Diesel Kiki Co., Ltd. Representative Patent attorney: Nobuo Sunako Figure 1 (a) 'P', analysis (b) Figure 2 (b)

Claims (1)

[Claims] a plurality of collectors that are renewable and into which engine exhaust gas is introduced to collect solid substances in the engine exhaust gas; a switching means for bringing the collectors other than the collector into a regenerating state and switching between the first collector and the first collector among the collectors other than the l collector at predetermined intervals; An exhaust gas purification device characterized by comprising: