KR101008683B1 - Burner for DPF System - Google Patents

Abstract

According to the present invention, when a high voltage is applied to the power supply for forming a plasma discharge phenomenon, formed of an insulating material and is provided in a form surrounding the outer peripheral surface side of the power supply is an insulating member for insulating the power supply and the outer peripheral surface of the insulating member A reactor installed to be fixed and including a support frame supporting and fixing the insulating member; It has a ring shape and is fixedly installed on one side of an exhaust flow path through which exhaust gas is transported, and a support hole through which a support frame is inserted and fixed is formed in the center, and the exhaust gas inlet hole through which exhaust gas is introduced. Swirl motion unit provided; A cylindrical pipe member fixed to one side of the swirl motion portion, the guide plate for controlling the movement direction of the exhaust gas so that the exhaust gas transferred through the exhaust flow path flows into the exhaust gas inlet hole of the swirl motion portion; And a cylindrical tubular member fixed to the other side of the swirl motion portion, the exhaust gas being in communication with the exhaust gas inflow hole and controlled by the guide plate to be introduced therein, and having a mixed fuel supply part located at one side of the exhaust flow path. A burner device for a DPF system is provided, including; a reaction chamber installed to be in communication with a mixed fuel transfer pipe receiving mixed fuel from a mixed fuel supply unit.

DPF system, plasma discharge, exhaust gas, mixed fuel, swirl motion

Description

Burner device for DFP system {Burner for DPF System}

The present invention relates to a burner device for a DPF system, and more particularly, is mounted inside the exhaust flow path through which the exhaust gas flows, so that the spreading range of the flame ignited in the burner device is increased by using the incoming exhaust gas. It relates to a burner device for a DPF system provided.

In general, the diesel particulate filter trap (DPF) system is a filter for filtering soot particles and a diesel vehicle after-treatment system for oxidizing the collected soot when a certain amount of soot is collected in the filter, and in the process of oxidizing the soot. A separate regeneration mechanism is required. Regeneration methods for stable use of such a DPF system may be classified into a passive regeneration method and a passive regeneration method.

Here, the natural regeneration method is a method of raising the temperature of the exhaust gas by the oxidation catalyst added in the soot filtration filter, and continuously oxidizing soot using oxygen (O ₂ ) and nitrogen dioxide (NO ₂ ) in the exhaust gas. .

However, such a natural regeneration method is difficult to expect a smooth soot filter regeneration effect because the exhaust gas temperature is not much lower than the catalyst activation temperature required for the natural regeneration in the case of a vehicle running at a low speed in the city. For this reason, the vehicle equipped with the device has problems such as deterioration of fuel efficiency, engine relief, and filter damage.

On the contrary, the forced regeneration method uses a forced heating means to raise the temperature of the exhaust gas to the oxidizable temperature of the soot when a certain amount of soot is collected in the filter, thereby continuously regenerating the soot filtration filter at an appropriate time. This is a means to maintain the performance of the DPF system and the performance of the vehicle.

As the heating means used in the forced regeneration method, a plasma burner device, a catalytic burner and an electric heater are used. In particular, the plasma burner device uses a discharge phenomenon of plasma to heat, reform and ignite fuel. By generating a flame, it is possible to minimize the possible heat loss by directly burning the diesel fuel used as a power source in a vehicle directly inside the exhaust pipe.

Accordingly, the present invention is an improvement of a conventional burner device for a DPF system. First, a burner device for a conventional DPF system will be described.

1 is a cross-sectional view showing the configuration of a conventional burner device for a DPF system, the conventional burner device 10 is mounted on one side of the exhaust gas flow path 30 in a vertical direction to be used to raise the temperature of the exhaust gas. .

As shown in FIG. 1, the conventional burner device 10 includes a hollow reactor 12 in which a fire zone 18 and a gas inlet 15 are formed on one side of a space where a flame is generated, and the reaction furnace 12. ) And a mixing chamber 16a communicating with the gas inlet 15 and communicating with the inside of the reactor 12 through an inlet hole 16b formed in the reactor 12. A body 20 including a ceramic insulator 13 formed thereon; In order to form a discharge voltage for the plasma reaction in the reactor 12 is fixed to the ceramic insulator 13 in a form spaced apart from the inner wall of the reactor 12 is projected on the reactor 12 An electrode 11 into which an additional liquid fuel is introduced, and an endothermic chamber 17 communicating with the mixing chamber 16a; It comprises a liquid fuel injection means (14a, 14b) fixed to the body 20 to supply the liquid fuel added to the endothermic chamber 17 of the electrode (11).

However, this burner device 10 has the following problems.

First, breakage of the ceramic insulator 13 occurs in the interconnection part by direct coupling of the electrode 11 and the ceramic insulator 13 supporting the electrode 11, and a plurality of liquid fuels are formed inside the ceramic insulator 13. And since there is a movement path of air there was a big problem of the potential impact of breakage.

In addition, when a high voltage is applied from the outside of the burner device 10 to the electrode 11, the connection is poor when connecting from one external contact through the communication hole of the ceramic insulator 13 to one contact of the internal electrode 11. Stable power supply is limited and liquid fuel and air leaks to the outside of the reactor and to the high voltage applying part through both connection parts and connection communication parts, which may cause serious safety problems.

In addition, the reactor 12 and the ceramic insulator (for processing the mixing chamber 16a and the inlet hole 16b, which are passages of liquid fuel and air, or the processing of a screw hole for fastening the electrode and the ceramic insulator 13) 13) the manufacturing cost is increased because a number of processing steps are required, each of the components formed with the screw holes had a problem that is particularly vulnerable to external impact when heated by the flame.

In addition, in order to thermally oxidize particulate matter (PM) included in the exhaust gas, the temperature of the exhaust gas should be raised to 600 ° C. or higher, but as described above, the heating method in a direction perpendicular to the flow of the exhaust gas is In order to raise the temperature evenly to the thermal oxidation possible temperature, there is a problem in that the fire power is insufficient.

The present invention was created to solve the above problems,

The burner device for the DPF system is used in the harsh environment where the high temperature and high pressure or the external impact is severely generated, the durability of each component is ensured for normal operation and the exhaust gas is turned around the fired flame It is an object of the present invention to provide a burner device for a DPF system that is provided so as to mix the exhaust gas and the flame, and to rapidly increase the temperature of the exhaust gas.

The burner device for a DPF system according to the present invention for achieving the above object is formed of a power supply unit for forming a plasma discharge phenomenon, an insulating material and surrounding one side of the outer circumferential surface of the power supply unit when a high voltage is applied. A reactor including an insulating member for insulating the power supply unit and a support frame installed to be fixed to one side of an outer circumferential surface of the insulating member and supporting and fixing the insulating member; It has a ring shape and is fixedly installed at one side of the exhaust flow path through which the exhaust gas is transported, and a support hole is formed at the center through which the support frame is inserted and fixed, and the exhaust gas flows into the exhaust gas. Swirl motion unit having a ball; A cylindrical plate member fixed to one side of the swirl motion part, and configured to adjust a moving direction of the exhaust gas so that the exhaust gas transferred through the exhaust flow path flows into the exhaust gas inlet hole of the swirl motion part; And a cylindrical tube member fixed to the other side of the swirl motion part, the exhaust gas being in communication with the exhaust gas inlet hole and having a movement direction controlled by the guide plate introduced therein, and located at one side of the exhaust flow path. And a reaction chamber installed to communicate with the mixed fuel supply unit and having a mixed fuel transfer pipe for receiving the mixed fuel from the mixed fuel supply unit.

Here, the exhaust gas inlet hole is a predetermined angle θ based on the central axis C of the swirl motion unit so that the exhaust gas introduced through the exhaust gas inlet hole turns and flows into the reaction chamber. It may be formed in an inclined form.

In addition, one side of the mixed fuel supply unit is provided with an air inlet pipe through which the outside air is introduced, the reaction in a state in which the fuel introduced through the fuel inlet of the mixed fuel supply unit and the air introduced into the air inlet tube mixed It is preferably provided to be introduced into the chamber.

In addition, a screw thread A is formed on one side of the outer circumferential surface of the support frame, and a screw thread B is formed on the inner surface of the support hole of the swirl motion part, and the support frame and the swirl motion part may be fastened by rotational coupling of the screw thread A and the screw thread B. FIG. have.

In addition, the guide plate for the DPF system, characterized in that the diameter of the guide plate is extended toward the other end formed extending in the opposite direction of the direction in which the exhaust gas flows from one end coupled to the swirl motion portion Burner device.

On the other hand, one side of the swirl motion portion is provided with a support portion formed with an insertion groove, a fixing pin located on one side of the exhaust passage is inserted into the insertion groove, it is preferable that the swirl motion portion is fixed to one side of the exhaust passage. Do.

In addition, a thread C is formed in the insertion groove of the support part, and a thread D is formed at one side of the outer circumferential surface of the fixing pin, and the swirl motion part and the exhaust flow path are fastened by the rotational coupling of the thread C and the thread D. Can be.

According to the burner device for a DPF system according to the present invention,

First, in the power supply rod and the insulating member, the insulating member and the support frame, the support frame and the swirl motion unit are fastened respectively, the conventional screw fastening method is adopted by a method of fastening by the rotation of the screw thread formed on one side of each member As a result, since the screw hole is not formed in each member including the insulating member, durability of the respective member is ensured.

Second, since the flame is generated in the same direction as the exhaust gas flows in the exhaust passage, the spreading range of the flame can be increased and the exhaust gas can be uniformly heated.

Third, the exhaust gas is provided so as to flow through the flame generated by the burner device, so that the exhaust gas and the flame are automatically mixed, thereby rapidly increasing the temperature of the introduced exhaust gas.

Fourth, the length of the flame is extended by the swirling air flow (swirl motion) of the exhaust gas, and heat is transmitted to the vicinity of the filter provided in the filter part of the DPF system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, a burner device for a DPF system according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 to 5.

2 and 3 are perspective cross-sectional views and cross-sectional views showing the configuration of a burner device for a DPF system according to an embodiment of the present invention, Figure 4 is a perspective view showing the configuration of the swirl motion portion of Figure 2 and Figure 5 is a swirl motion portion of FIG. It is a schematic diagram which shows the form of the exhaust gas inflow hole provided in the. Here, the arrow shown in FIG. 5 represents the flow of exhaust gas.

As shown in Figure 2 to 5, the burner device (100; hereinafter, 'burner device') for the DPF system according to an embodiment of the present invention is large reactor 110, swirl motion unit 120, guide plate It includes a 130 and the reaction chamber 140, it is mounted inside the exhaust passage 200 which is a passage for the exhaust gas discharged from the engine engine to move.

First, the reactor 110 is a member for generating a spark in the reaction chamber 140 by receiving a high voltage from the outside, including a power supply 111, the insulating member 112 and the support frame 113. do.

Here, the power supply 111 is a member for forming a plasma discharge phenomenon due to the potential difference with the reaction chamber 140 when a high voltage is applied, the electrode 116 is an elliptical or circular end member that the spark occurs; A high voltage is directly applied from the outside and is formed of a rod-shaped power supply rod 117 for transmitting the high voltage applied to the electrode 116.

At this time, the electrode 116 and the power supply rod 117 should be provided with a strength that does not change the shape of the member even if an external high voltage is applied, of course, the crater portion of the reaction chamber 140 to be described later ( 145) is preferably formed of a heat resistant material that can withstand the high heat delivered due to the heat generation of the flame ignited.

In addition, the power supply 111 is connected to a power supply line (not shown) introduced through the high voltage connection groove 201 formed at one side of the exhaust passage 200, the high voltage is transmitted, and after being connected to the power supply line The high voltage connection groove 201 is preferably sealed to prevent leakage of the exhaust gas.

On the other hand, the insulating member 112 is formed of an insulating material and is provided in the form surrounding the outer peripheral surface side of the power supply 111 to function to insulate the power supply 111.

Here, the insulating member 112 is the electrode 116 so that the power supply 111 is electrically separated from other components of the burner device 100 when a high voltage is applied to the power supply 111. It is preferable to be provided to insulate the entire portion of the insulating member 112 except for the tip (Tip) to which the external voltage of the power supply rod 117 is directly applied. In addition, the insulating member 112 may be formed of a ceramic material having a durability and heat resistance while being a non-conductor.

In addition, as shown in Figure 2 and 3, one side of the outer peripheral surface of the power supply unit 111 and one side of the inner surface of the insulating member 112 is formed with a screw thread, respectively by the rotational coupling of the respective screw line Preferably, the power supply 111 and the insulating member 112 are fastened to each other.

The rotational coupling by the screw line corresponds to the heating and external shock caused by the flame since the screw hole for screwing is not processed in each member to be fastened, compared with the conventional screw hole and bolt coupling method. Durability is ensured, and each fastening member is sealed and coupled, thereby providing an airtight effect in which fuel supplied to the burner device 100 does not penetrate into the engaging portion of the fastening member.

Furthermore, in order to increase the above-mentioned airtightness effect, a leakage preventing bonding agent is coated on a portion of each of the insulating members 112 and the screw threads of the power supply 111 to be rotated to be in contact with the insulating member 112. And the power supply 111 may be more firmly fixed.

Here, the leakage preventing bonding agent serves to prevent the fuel introduced into the burner device 100 from penetrating at the contact interval between the insulating member 112 and the power supply 111, more preferably the The leakage preventing bonding agent may be a bonding agent formed of a material having heat resistance to withstand the high heat of the flame ignited by the fireball unit 145.

In addition, as shown in FIG. 3, a predetermined space 118 is formed between the outer circumferential surface of the power supply rod 117 and the inner surface of the insulating member 112, so that the inside of the insulating member 112 is formed. The power supply rod 117 inserted into the power supply rod 117 may prevent the insulation member 112 and the power supply rod 117 from being damaged due to volume expansion due to the high heat received through the electrode 116.

That is, the predetermined space 118 means an empty space generated due to the difference between the inner surface diameter of the insulating member 112 and the diameter of the outer circumferential surface of the power supply rod 117.

The support frame 113 is installed to be fixed to one side of the outer circumferential surface of the insulating member 112, and serves to support and fix the insulating member 112, and the support for fastening with the swirl motion unit 120 to be described later. Thread A 114 is formed on one side of the outer circumferential surface of the mold 113.

Here, an elastic gasket (not shown) having a ring shape may be provided at a portion where the support frame 113 and the insulating member 112 are in contact with each other so as to prevent fuel from penetrating into the reaction chamber 140. Can be.

At this time, the number of gaskets provided is preferably determined according to the environment and purpose of use of the burner device 100.

Meanwhile, the swirl motion unit 120 has a ring shape and is fixedly installed on one side of the exhaust flow path 200 through which the exhaust gas of the vehicle is transferred, and the support frame 113 penetrates at the center thereof. The support hole 122 is inserted into and fixed, and a plurality of exhaust gas inlet holes 121 through which the exhaust gas is introduced are provided.

Here, the thread B (115) is formed on the inner surface of the support hole 122 of the swirl motion part 120, the thread A (114) and the thread B (115) formed on one side of the outer circumferential surface of the support frame 113 described above. By the rotational coupling of the support frame 113 and the swirl motion unit 120 may be provided to be fastened.

Furthermore, the portion of the support frame 113 and the screw threads 114 and 115 of the swirl motion part 120 are rotated and contacted, as in the case where the above-described insulation member 112 and the power supply unit 111 are fastened. It is preferable that the leakage preventing bonding agent is coated and fixedly bonded in a state where more robustness and airtightness are ensured.

3 and 4, when the swirl motion part 120 is fixedly installed on one side of the exhaust passage 200, an insertion groove 124 is formed on one side of the swirl motion part 120. A plurality of supporting parts 123 are formed, and a fixing pin 125 located at one side of the exhaust flow path 200 is inserted into the insertion groove 124 so that the swirl motion part 120 is exhaust gas flow path 200. It is provided to be fixed to one side.

At this time, the thread line C (126) is formed inside the insertion groove 124 of the support portion 123, the thread line D (127) is formed on one side of the outer peripheral surface of the fixing pin 125 and the screw line C (126) It is preferable that the swirl motion unit 120 and the exhaust flow path 200 are fastened by the rotational coupling of the screw line D 127.

That is, as shown in FIG. 3, the support part 123 of the swirl motion part 120 and the fixing pin 125 have the wall of the exhaust flow path 200 interposed therebetween and inserted into the insertion groove 124. By inserting a portion where the thread D 127 of the fixing pin 125 is formed, the head 128 of the fixing pin 125 is supported on the outer surface of the exhaust passage 200, and the support portion 123 of The end is firmly fixed by being supported by the inner surface of the exhaust passage 200.

2 to 4, the swirl motion unit 120 includes a plurality of exhaust gas inlet holes 121 in a direction corresponding to a movement direction of the exhaust gas flowing into the exhaust passage 200. In this case, as shown in Figure 5, the exhaust gas inlet hole 121 is the exhaust gas introduced through the exhaust gas inlet hole 121 is turned so as to flow into the reaction chamber 140 The swirl motion unit 120 may be formed to be inclined at a predetermined angle θ based on the center axis C of the swirl motion unit 120.

In this case, the predetermined angle θ means an angle at which the movement direction of the exhaust gas flowing into the exhaust gas inlet hole 121 of the swirl motion part 120 is adjusted, and the predetermined angle θ is increased. The swirling airflow of the exhaust gas increases as well, while the swirling airflow decreases when the predetermined angle θ decreases.

That is, the intensity of the swirling airflow increases and decreases by the predetermined angle θ, and the spread of the flame including the length of the flame ignited in the fire zone 145 of the reaction chamber 140 according to the increase and decrease of the swirling airflow. Since the range is increased, the quantity and diameter of the exhaust gas inlet hole 121 is preferably determined in consideration of the degree of ignition (diffusion range) of the flame required by the burner device 100 of the present invention.

On the other hand, the guide plate 130 is a cylindrical pipe member fixed to one side of the swirl motion portion 120, as shown in Figure 2 and 3, the exhaust gas transferred through the exhaust flow path 200 Is a member for adjusting the movement direction of the exhaust gas so as to flow into the exhaust gas inlet hole 121 of the swirl motion unit 120.

Here, the guide plate 130 extends in the opposite direction formed in the opposite direction to the direction in which the exhaust gas flows from one end coupled to the swirl motion unit 120, the diameter of which is expanded, that is, funnel shape It is preferable that the exhaust gas is formed to be provided so that a larger amount of exhaust gas flows into the exhaust gas inlet hole 121.

In addition, the distance between the end of the other end of the guide plate 130 and the inner surface of the exhaust passage 200 is determined in consideration of the discharge amount and the discharge pressure of the exhaust gas flowing into the exhaust passage 200. It is desirable to lose.

The shorter the distance is, the greater the amount of exhaust gas whose direction of movement is adjusted to the exhaust gas inlet hole 121 by the guide plate 130 is increased, so that the flame inside the reaction chamber 140. Although there is an advantage that can increase the diffusion range of more, since the amount of exhaust gas passing through the exhaust gas inlet hole 121 is limited, the exhaust gas pressure in the exhaust flow path 200 is increased, In this case, an overload occurs in an exhaust gas discharge part (not shown) for discharging the exhaust gas, which may cause damage to the engine engine or the burner device 100.

In addition, as the spaced distance increases, the amount of exhaust gas introduced into the exhaust gas inlet hole 121 by the guide plate 130 is reduced, so that the exhaust gas pressure in the exhaust flow path 200 can be maintained constant. There is an advantage, but the amount of the exhaust gas passing through the exhaust gas inlet 121 is reduced, there is a disadvantage in that the effect of increasing the diffusion range of the flame ignited in the reaction chamber 140 is insufficient.

Therefore, the spaced distance is preferably determined in consideration of the spreading range of the flame required by the burner device 100 and the appropriate pressure of the exhaust gas in the exhaust flow path 200.

On the other hand, the reaction chamber 140 is a cylindrical pipe member fixed to the other side of the swirl motion portion 120, and communicates with the exhaust gas inlet hole 121, the direction of movement by the guide plate 130 This guided and regulated exhaust gas is introduced into the interior.

In addition, the reaction chamber 140 is installed to be in communication with the mixed fuel supply unit 142 located on one side of the exhaust passage 200, the mixed fuel transfer pipe supplied with the mixed fuel from the mixed fuel supply unit 142 141 is provided.

Here, one end of the reaction chamber 140 is formed with a crater 145 which is a space where the flame is ignited due to sparks by the power supply 111, the diameter of the end of the crater 145, It is provided with a size smaller than the diameter of the other end of the reaction chamber 140 coupled to the other side of the swirl motion unit 120, it is provided to increase the discharge pressure of the exhaust gas passing through the reaction chamber 140 desirable.

In addition, one side of the mixed fuel supply unit 142 is provided with an air inlet tube 143 through which the outside air is introduced, the fuel introduced through the fuel inlet 144 of the mixed fuel supply unit 142 and the air injection The air flowing into the tube 143 may be provided to be introduced into the reaction chamber 140 in a mixed state.

In this case, as shown in FIG. 3, the air injection pipe 143 is mounted to the side surface of the mixed fuel supply unit 142 in an oblique direction, and the air introduced through the air injection pipe 143 is the mixed fuel. As the swirling air flows into the pipe of the supply unit 142, it is preferable that the fuel and air are smoothly mixed.

That is, the mixed fuel means a state in which the fuel and the air introduced through the air injection pipe 143 are atomized and mixed.

In addition, the mixed fuel transfer pipe 141, which is a passage through which the mixed fuel supplied from the mixed fuel supply unit 142 is transferred, is mounted at one side of the reaction chamber 140, so that the mixed fuel transfer pipe 141 Since the discharge part is mounted at a position corresponding to the end of the electrode 116 of the reactor 110 fixedly installed in the reaction chamber 140, the mixed fuel is generated by the spark generated by the electrode 116. It is preferable to be provided so that it may be easily ignited. Here, the discharge means a position where one end of the mixed fuel transfer pipe 141 and the reaction chamber 140 are fastened.

Next, an operation principle according to a preferred embodiment of the burner device for a DPF system of the present invention will be described.

6 is a schematic view showing a movement path of the exhaust gas moving inside the exhaust passage 200. Here, the arrow shown in FIG. 6 indicates the flow of the exhaust gas, and the reference numeral in FIG. 6 is omitted to clearly show the flow.

First, in the state in which the end of the power supply rod 117 and the power supply line is connected, the mixed fuel through the mixed fuel supply unit 142 is a high pressure to the crater unit 145 that is the inner space of the reaction chamber 140 At the same time, a high voltage is applied to the power supply 111 through the power supply line.

Subsequently, due to the potential difference between the reaction chamber 140 and the electrode 116 exposed inside the reaction chamber 140, a spark due to a plasma discharge phenomenon is instantaneously generated, and the mixed fuel is a fired part ( 145 will ignite and generate a flame.

Meanwhile, the exhaust gas discharged from the engine engine and transferred into the exhaust flow path 200 moves in the direction in which the reaction chamber 140 is located at the position of the power supply rod 117 of the burner device 100. A part of the exhaust gas is controlled by the guide plate 130 to be moved in the exhaust gas inlet hole 121, and the remaining exhaust gas is spaced apart from the inner surface of the guide plate 130 and the exhaust flow path 200. It passes through the burner device 100 as it is without passing through the gap.

Here, as shown in FIG. 5, the exhaust gas flowing into the exhaust gas inlet hole 121 is controlled by the exhaust gas inlet hole 121 formed in an inclined shape at an angle θ. It passes through the exhaust gas inlet hole 121 in the state and moves to the inside of the reaction chamber 140.

At this time, the exhaust gas of the state in which the movement direction is adjusted by sliding along the inner surface of the reaction chamber 140 by the inner surface formed in the cylindrical shape of the reaction chamber 140, the inside of the reaction chamber 140 Generates rotating swirl airflow.

That is, as illustrated in FIG. 6, the exhaust gas passing through the exhaust gas inlet hole 121 pivots about the electrode 116 and passes through the reaction chamber 140.

The flame ignited in the fire zone 145 of the reaction chamber 140 by the swirling air flow of the exhaust gas is mixed with the exhaust gas, so that its length is extended to increase the spreading range of the flame, and mixed with the flame It is possible to increase the temperature of the exhaust gas at once.

In addition, the exhaust gas contains oxygen together with particulate matter (PM), which is used to burn the flame to increase the combustion efficiency of the burner device (100).

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is a cross-sectional view showing the configuration of a burner device for a conventional DPF system;

2 to 3 is a perspective cross-sectional view and a cross-sectional view showing the configuration of a burner device for a DPF system according to an embodiment of the present invention;

4 is a perspective view showing the configuration of the swirl motion portion of FIG.

5 is a schematic view showing the shape of the exhaust gas inlet provided in the swirl motion portion of FIG.

6 is a schematic view showing a movement path of the exhaust gas moving inside the exhaust passage.

<Explanation of symbols for the main parts of the drawings>

100 ... burner unit for DPF system 110 ... reactor

111 Power supply 112 Insulation member

113 Support frame 120 Swirl motion

121 Exhaust gas inlet 130 Information board

140 Reaction chamber 141 Mixed fuel transfer pipe

142.Mixed fuel supply

Claims (7)

When a high voltage is applied to the power supply to form a plasma discharge phenomenon, formed of an insulating material and is formed in a form surrounding the outer peripheral surface of the power supply is an insulating member to insulate the power supply, and to be fixed to one side of the outer peripheral surface of the insulating member A reactor including a support frame installed and supporting the insulating member; It has a ring shape and is fixedly installed at one side of the exhaust flow path through which the exhaust gas is transported, and a support hole is formed at the center through which the support frame is inserted and fixed, and the exhaust gas flows into the exhaust gas. Swirl motion unit having a ball; A cylindrical plate member fixed to one side of the swirl motion part, and configured to adjust a moving direction of the exhaust gas so that the exhaust gas transferred through the exhaust flow path flows into the exhaust gas inlet hole of the swirl motion part; And A cylindrical tube member fixed to the other side of the swirl motion portion, the exhaust gas in communication with the exhaust gas inlet hole is controlled by the guide plate flows into the interior, mixed fuel located on one side of the exhaust flow path And a reaction chamber installed to communicate with a supply unit, the reaction chamber having a mixed fuel transfer pipe supplied with the mixed fuel from the mixed fuel supply unit. The method of claim 1, wherein the exhaust gas inlet hole, It is formed in a form inclined at a predetermined angle (θ) with respect to the center axis (C) of the swirl motion portion so that the exhaust gas introduced through the exhaust gas inlet hole is turned and introduced into the reaction chamber. Burner device for DPF system. The method of claim 1, One side of the mixed fuel supply unit is provided with an air inlet tube through which external air is introduced, and the fuel introduced through the fuel inlet of the mixed fuel supply unit and the air introduced into the air inlet tube are mixed with each other in the reaction chamber. Burner device for a DPF system, characterized in that it is provided to be introduced into. The method of claim 1, A thread line A is formed at one side of the outer circumferential surface of the support frame, and a thread line B is formed at an inner surface of the support hole of the swirl motion part. Burner device for a DPF system, characterized in that the support frame and the swirl motion portion is fastened by the rotational coupling of the screw line A and screw line B. The method of claim 1, The guide plate is burner device for the DPF system, characterized in that the diameter of the guide plate is extended toward the other end formed extending in the opposite direction of the direction in which the exhaust gas flows from one end coupled to the swirl motion portion . The method of claim 1, One side of the swirl motion part is provided with a support having an insertion groove, and a fixing pin located at one side of the exhaust flow path is inserted into the insertion groove. Burner device for a DPF system, characterized in that the swirl motion unit is fixed to one side of the exhaust passage. The method of claim 6, A thread line C is formed inside the insertion groove of the support part, and a thread line D is formed at one side of the outer circumferential surface of the fixing pin. The burner device for a DPF system, characterized in that the swirl motion portion and the exhaust flow path is fastened by the rotation of the screw C and screw D.

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