KR101153800B1 - Injection nozzle assembly induction heater - Google Patents

Abstract

According to the present invention, a through-hole is formed therein, the inside of the through-hole is a cylindrical nozzle body formed through the air inlet through which air is introduced; A fuel supply unit inserted into one side of the through hole and receiving fuel from the outside and injecting the fuel into the nozzle body; A mixing chamber inserted into and coupled to the other side of the through hole, the mixing space having a space in which the fuel and air are mixed therein, and having a heating portion inserting groove formed at one side; And a heating part inserted into and coupled to a heating part insertion groove of the mixing chamber and generating heat when power is applied from the outside.

Injection nozzle, assembly, mixing

Description

Injection nozzle assembly with heating unit {Injection Nozzle Assembly Induction Heater}

The present invention relates to an injection nozzle assembly provided with a heating unit, and more particularly, to evaporate residual fuel that may remain in the nozzle tube or the injection hole after fuel injection, thereby preventing carbon foreign matter, fine dust, and PM inside the injection nozzle assembly. The present invention relates to a spray nozzle assembly provided with a heating unit capable of preventing accumulation of back and the like.

In general, an injection nozzle is a device for changing pressure energy of a liquid into velocity energy. In a diesel engine, an injection nozzle means a nozzle for injecting fuel into a fine mist state in a cylinder.

The injection nozzle is mounted as a part of a burner device provided in the DPF system, and functions to generate a flame by injecting a mixed fuel atomized in the burner device into a combustion chamber, where FIG. 1 shows a burner of a conventional DPF system. A configuration in which the fuel injection nozzle 14 is mounted to the apparatus 10 is disclosed.

1, the conventional burner device 10 is mounted on one side of the discharge line 20 through which the exhaust gas discharged from the engine engine flows so that particulate matter (PM) contained in the exhaust gas is The exhaust gas is heated to a certain temperature threshold so that it can be filtered by a catalyst installed at a later stage.

In addition, the conventional burner device 10 includes a high voltage electrode 11 to which a high voltage is applied from the outside, a combustion chamber 13 formed therein for a flame to be burned, and a reaction chamber 12 having a ground potential; And a fuel injection nozzle 14 mounted on an upper portion of the reaction chamber 12 to inject a mixed fuel toward the combustion chamber 13. Through such a technical configuration, the conventional burner device 10 includes fuel injection. The mixed fuel in a state where fuel and air are mixed flows from the nozzle 14, and a high voltage is applied to the high voltage electrode 11 so that the high voltage electrode is caused by a potential difference between the high voltage electrode 11 and the reaction chamber 12. A plasma arc is generated between 11 and the reaction chamber 12. The plasma arc ignites the mixed fuel to be burned in the combustion chamber 13 while generating a spark in contact with the mixed fuel.

However, the conventional burner device 10 ignites a flame by periodically burning fuel to raise the exhaust gas to a certain threshold temperature.

That is, the fuel injection nozzle 14 injects the mixed fuel only during ignition of the flame, and the supply of fuel and air from the outside is stopped while the flame is not ignited.

In the conventional fuel injection nozzle 14, residual fuel may remain in the conduit of the nozzle 14 or at the end of the injection port of the nozzle 14 after injecting the mixed fuel into the combustion chamber to generate the flame.

In addition, after the flame is burned in the burner device 10, the mixed fuel is burned in the internal space of the burner device 10 including the fuel injection nozzles 14, and the remaining carbon foreign matter and fine dust introduced from the outside. Air to be included and particulate matter (PM) included in the exhaust gas may flow.

The carbon foreign matter, fine dust, PM, etc. are adsorbed to the residual fuel remaining in the fuel injection nozzle 14 in the process of flowing the internal space of the burner device 10, and the foreign matters are adsorbed. When the residual fuel is evaporated at, the foreign substances are stuck in the fuel injection nozzle 14 so that the mixed fuel remains unremoved even when the mixed fuel is introduced again.

That is, in the conventional fuel injection nozzle 14, the mixed fuel is introduced and the foreign substances are accumulated while repeating the adsorption of the foreign substances, such that the diameter of the nozzle or the end of the injection port of the nozzle 14 is narrowed or blocked. As a result, the flow of the mixed fuel may not be smooth.

In addition, since the flow of the mixed fuel is not smooth, there is a problem that the filter for filtering the exhaust gas is not regenerated and further, each part is damaged throughout the DPF system.

The present invention has been made to solve the above-described problems, by evaporating residual fuel that may remain in the nozzle tube or the injection hole after the fuel injection, it is possible to accumulate carbon foreign matter, fine dust and PM in the injection nozzle assembly It is an object of the present invention to provide an injection nozzle assembly having a heating unit that can be prevented.

Injection nozzle assembly with a heating unit according to the present invention for achieving the above object, the through-hole is formed inside, the inside of the through-hole is a cylindrical nozzle body formed through the air inlet through which air is introduced; A fuel supply unit inserted into one side of the through hole and receiving fuel from the outside and injecting the fuel into the nozzle body; A mixing chamber inserted into and coupled to the other side of the through hole, the mixing space having a space in which the fuel and air are mixed therein, and having a heating portion inserting groove formed at one side thereof; And a heating part inserted into and coupled to the heating part insertion groove of the mixing chamber and generating heat when power is applied from the outside.

Here, the heating unit includes a power supply rod formed at one end of the power supply tip, which is a portion to which external power is directly applied, and a heating tip formed at the other end of the power supply rod to generate heat when the power is applied. The heating tip is inserted into the heating insert, the outer surface is provided to be in direct contact with the inner surface of the heating insert insertion groove, it may be provided so that the heat generated heat is transferred to the mixing chamber.

In addition, the inside of the mixing chamber is injected to the mixed fuel mixed in the mixing space portion to the outside, a slew chamber formed of a thermal conductor material may be inserted.

In addition, a mixed fuel transfer pipe is provided inside the swirl chamber to communicate with the mixed space part to transfer the mixed fuel introduced from the mixed space part, and at the end of the mixed fuel transfer pipe, the mixed fuel transfer is performed. Swirl space portion is formed to have a larger diameter than the tube to boost the injection pressure of the transported mixed fuel can be formed.

In addition, the one end portion is positioned to be fixed to one side of the nozzle body portion, and further comprising a fixing frame coupled to the nozzle body by a fastening screw inserted into the coupling groove formed on one side of the nozzle body portion, The other end may be coupled to one end of the fuel supply unit and one end of the heating unit to support the fuel supply unit and the heating unit to be fixed to the nozzle body.

The heating unit may generate heat by receiving power at a time when external fuel and air are not introduced from the fuel supply unit and the air inlet.

According to the injection nozzle assembly provided with a heating unit according to the present invention,

First, since residual fuel does not remain in the nozzle tube or the injection hole after the fuel injection, foreign matters such as carbon foreign matter, fine dust, and PM can be prevented from being adsorbed and accumulated in the injection nozzle assembly.

Second, since foreign substances are not adsorbed in the injection nozzle tube or the injection hole, the flow of the mixed fuel is smoothed, and the life of the product can be increased not only in the burner device but also in the entire DPF system.

Third, since the temperature of the heating unit for evaporating the residual fuel increases in proportion to the size of the power applied from the outside, there is an effect that the heating time and heating temperature required to evaporate the residual fuel can be easily adjusted.

Fourth, since the mixed fuel discharged to the outside through the injection nozzle after the heating unit is heated is preheated during the injection process (at the point of passing through the swirl chamber), the incomplete combustion of the mixed fuel is minimized and the atomized state of the mixed fuel is further improved. You can increase it.

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.

With reference to Figures 2 to 6 will be described the configuration and function of the injection nozzle assembly provided with a heating unit according to an embodiment of the present invention.

Figure 2 is a perspective view showing the external configuration of the injection nozzle assembly with a heating unit of the present invention, Figure 3 is a side view showing the external configuration of the injection nozzle assembly with a heating unit of the present invention, Figure 4 is provided with a heating unit of the present invention FIG. 5 is a cross-sectional view showing the internal structure of the injection nozzle assembly with a heating unit of the present invention, and FIG. 6 is a swirl chamber provided in the injection nozzle assembly with the heating unit of the present invention. It is an enlarged sectional view which expands and shows the structure of this.

2 to 6, the injection nozzle assembly 100 with a heating unit according to an embodiment of the present invention, the nozzle body 110, the fuel supply unit 120, the mixing chamber 130 , Including a heating unit 140 and a fixed frame 150.

First, the nozzle body 110 is a cylindrical body having a through-hole formed therein, the air inlet 111 through which air is introduced from the outside is formed through the through-hole.

 Here, the fuel supply unit 120 and the mixing chamber 130 are inserted and coupled to one side and the other side, respectively, so that the mixing space 131 is formed in the central portion of the through hole, and the outside of the external air flows into the air inlet 111. The external fuel introduced into the air and the fuel supply unit 120 is mixed in the mixing space 131 to be introduced into the swirl chamber 133 mounted inside the mixing chamber 130.

In addition, the air inlet 111 is formed in the through hole as shown in Figures 2, 3 and 5, but is formed so as to penetrate in a direction perpendicular to the flow direction of the fuel flowing from the fuel supply unit 120. Thus, the swirl flows inside the mixing space 131 and air is introduced. Therefore, the fuel injected in the atomized state through the fuel supply unit 120 rotates together by the swirl flow airflow of the air and is mixed in the mixing space 131.

In addition, the outside for supplying air and fuel to the air inlet 111 and the fuel supply unit 120 means a burner device or a DPF system mounted to the injection nozzle assembly 100 provided with the heating unit of the present invention, and narrow Meaning means the outside of the injection nozzle assembly 100 provided with a heating unit of the present invention.

The fuel supply unit 120 is inserted into and coupled to one side of the through hole of the nozzle body 110, and receives fuel from the outside to inject the inside of the nozzle body 110, that is, the mixed space 131. .

Here, the fuel supply unit 120, as shown in Figures 4 and 5, the fuel introduced into the fuel inlet 152 formed on the other side of the fixed frame 150 in the direction of the mixing space 131. A boosting space configured to have a larger diameter than that of the fuel transport pipe 121 at one side of the fuel transport pipe 121 to be transported and mounted at an end of the fuel transport pipe 121 to have a larger diameter than the fuel transport pipe 121. It is provided including a fuel injection head 122 is formed with a portion 123.

Therefore, since the fuel introduced through the fuel transfer pipe 121 is boosted to a pressure higher than the flow pressure at the time of flowing into the fuel inlet 152 from the boosting space 123, the fuel injection head 122 The fuel injected into the mixing space 131 through the () is injected in the atomized gas state.

Here, the air inlet 111 is formed so as to pass through the inside of the through hole of the nozzle body 110 in a direction perpendicular to the flow direction of the fuel, the fuel injected through the fuel injection head 122 is pivoting It is preferably formed on the side of the fuel injection head 122 to flow and discharge.

The mixing chamber 130 is inserted and coupled to the other side of the through-hole of the nozzle body 110, there is formed a mixing space 131 is a space in which the fuel and air is mixed, the heating portion on one side The heating part insertion groove 132 into which the 140 is inserted is formed.

Here, the mixing chamber 130 is injected into the mixed fuel mixed in the mixing space 131 to the outside, the swirl chamber 133 formed of a thermal conductor material is inserted is provided.

In addition, as shown in Figure 5 and 6, the interior of the swirl chamber 133 is provided to communicate with the mixing space 131 is mixed to transport the mixed fuel injected into the mixing space 131 A fuel delivery pipe 134 is formed, and at the end of the mixed fuel transport pipe 134, a swirl space portion formed to have a larger diameter than the mixed fuel transport pipe 134 to boost the injection pressure of the transported mixed fuel ( 135 may be formed.

Therefore, the mixed fuel introduced through the mixed fuel transfer pipe 134 is raised to a pressure higher than the injection pressure when the swirl space 135 is introduced into the mixed space 131. Can be sprayed on.

Here, the outside may be a member that receives the mixed fuel from the injection nozzle assembly 100 provided with the heating unit of the present invention to generate flame, such as the combustion chamber of the burner device.

The heating unit 140, one side is inserted and coupled to the heating unit insertion groove 132 of the mixing chamber 130, and functions to generate heat when receiving power from the outside.

More specifically, as shown in FIGS. 4 and 5, the heating unit 140 may include a power supply rod 142 having a power supply tip 143 formed at one end of a portion to which external power is directly applied. It is formed on the other end of the power supply rod 142 is provided including a heating tip 141 that generates heat when the power is applied.

In addition, the heating tip 141 is inserted into the heating unit insertion groove 132, the outer surface is provided to be in direct contact with the inner surface of the heating unit insertion groove 132, the heat generated heat is mixed It is provided to be delivered to the chamber 130.

That is, the heating unit 140, after injecting the mixed fuel in the injection nozzle assembly 100 provided with the heating unit of the present invention, the inner surface of the mixing space 131, the mixed fuel of the swirl chamber 133 The heating of the transfer pipe 134 and the remaining fuel that may remain in the inner surface of the swirl space portion 135 of the swirl chamber 133 is heated to evaporate.

Here, the heating unit 140 is preferably provided to generate heat by receiving power at a time when external fuel and air are not introduced from the fuel supply unit 120 and the air inlet 111.

In addition, since the temperature of the heating unit for evaporating the residual fuel increases in proportion to the magnitude of the power applied from the outside, the heating unit 140 easily adjusts the time and heating temperature required to evaporate the residual fuel. It can be effective.

Therefore, the mixing chamber 130 and the swirl chamber 133 which are in direct contact with the heating unit 140 are preferably formed of a material having high thermal conductivity so that heat generated by the heating unit 140 is efficiently transferred. In order to preserve heat generated by the heating unit 140, the nozzle body 110 formed to surround the outside of the mixing chamber 130 may be formed of a material having low thermal conductivity.

In addition, after the swirl chamber 133 is heated by the heating unit 140, the mixed fuel flowing through the mixed fuel transfer pipe 134 in the mixing space 131 is the mixed fuel transfer pipe. Preheated by the residual heat of the swirl chamber 133 while passing through 134, the pre-combustion of the mixed fuel can be minimized, and the atomized state of the mixed fuel can be further increased.

On the other hand, the fixing frame 150, as shown in Figure 4 and 5 is positioned so that one end is fixed to one side of the nozzle body 110, a fastening groove formed on one side of the nozzle body 110 It is fastened with the nozzle body 110 by a fastening screw 151 inserted into the (112).

Here, the other end of the fixed frame 150 is coupled to one end of the fuel supply unit 120 and one end of the heating unit 140, the fuel supply unit 120 and the heating unit 140 is a nozzle body It may be provided to be supported to be fixed to the portion (110).

Through the configuration of the injection nozzle assembly 100 with the heating unit of the present invention as described above, after the mixed fuel injection, the inner surface of the mixing space 131, the mixed fuel transfer pipe 134 of the swirl chamber 133 Since the residual fuel does not remain in the pipeline and the inner surface of the swirl space portion 135 of the swirl chamber 133, foreign matters such as carbon foreign matter, fine dust and PM are spray nozzle assembly 100 of the present invention. Can be prevented from being adsorbed inside.

In addition, since foreign matters are not adsorbed in the injection nozzle pipe or the injection port, the flow of mixed fuel is smoothed, which can increase the life of the product throughout the DPF system as well as the burner, as well as the power applied from the outside. Since the temperature of the heating unit for evaporating the residual fuel increases in proportion to the size of, it is possible to implement an effect of easily adjusting the time and heating temperature required to evaporate the residual fuel.

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 a configuration in which a fuel injection nozzle is mounted on a conventional burner device;

Figure 2 is a perspective view showing the external configuration of the injection nozzle assembly provided with a heating unit of the present invention,

Figure 3 is a side view showing the external configuration of the injection nozzle assembly provided with a heating unit of the present invention,

Figure 4 is a perspective cross-sectional view showing the internal configuration of the injection nozzle assembly provided with a heating unit of the present invention,

Figure 5 is a cross-sectional view showing the internal configuration of the injection nozzle assembly provided with a heating unit of the present invention,

Figure 6 is an enlarged cross-sectional view showing an enlarged configuration of the swirl chamber provided in the injection nozzle assembly with a heating unit of the present invention.

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

100 ... Dispensing nozzle assembly with heating part 110 ... Nozzle body part

120 Fuel supply 130 Mixed chamber

131 Mixing space 132 Inserting groove

140.heater 150 ... fixed frame

Claims (6)

A through-hole is formed inside, the inside of the through-hole of the cylindrical nozzle body 110 is formed through the air inlet 111 through which air is introduced; A fuel supply unit 120 inserted into one side of the through hole and receiving fuel from the outside to inject the fuel into the nozzle body 110; A mixing chamber 130 inserted into and coupled to the other side of the through hole, the mixing space 131 being a space where the fuel and air are mixed, and having a heating insert groove 132 formed at one side thereof; And One side is inserted and coupled to the heating portion insertion groove 132 of the mixing chamber 130, the heating unit 140 is generated when the power is applied from the outside; The heating unit 140 has a power supply rod 142 formed at one end of the power supply tip 143 which is a portion to which external power is directly applied, and is formed at the other end of the power supply rod 142 to apply power. It is provided including a heating tip 141 that generates heat when received, The heating tip 141 is inserted into the heating insert groove 132, the outer surface is provided to be in direct contact with the inner surface of the heating insert groove 132, the heat generated is the mixing chamber 130 Injection nozzle assembly provided with a heating unit characterized in that it is provided to be delivered to. delete The method of claim 1, Inside the mixing chamber 130 is sprayed with the mixed fuel mixed in the mixing space 131 to the outside, the heating chamber is provided with a swirl chamber 133 formed of a thermal conductor material is provided Injection nozzle assembly. The method of claim 3, Inside the swirl chamber 133 is provided to be in communication with the mixing space 131, the mixed fuel transfer pipe 134 for transferring the mixed fuel flowing from the mixing space 131 is formed, At the end of the mixed fuel transfer pipe 134, a swirl space portion 135 is formed to have a larger diameter than the mixed fuel transfer pipe 134 to boost the injection pressure of the mixed fuel is heated, characterized in that the heating Injection nozzle assembly provided. The method according to any one of claims 1, 3 or 4, One end portion is fixed to one side of the nozzle body 110, the nozzle body 110 by a fastening screw 151 is inserted into the coupling groove 112 formed on one side of the nozzle body 110. And further includes a fixed frame 150 is fastened, The other end of the fixed frame 150 is coupled to one end of the fuel supply unit 120 and one end of the heating unit 140, so that the fuel supply unit 120 and the heating unit 140 is the nozzle body portion Injection nozzle assembly provided with a heating unit, characterized in that the support to be fixed to (110). The method of claim 5, wherein the heating unit 140, The injection nozzle assembly with a heating unit, characterized in that the heat is applied to the power supply at a time when the external fuel and air is not introduced from the fuel supply unit 120 and the air inlet 111.

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