KR940005107Y1 - Fuel spray device for vaporization type oil burner - Google Patents

Abstract

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Description

Fuel injection device of vaporized oil combustor

1 is a cross-sectional view showing a fuel injection value of a conventional vaporized petroleum combustor.

2 is a cross-sectional view showing the fuel injection value of the vaporized petroleum combustor of the present invention.

3 is a cross-sectional view taken along the line a-a of FIG.

4 is a cross-sectional view taken along the line b-b in FIG.

* Explanation of symbols for main parts of the drawings

1: combustion air supply pipe 1a: upper surface

1b: bottom 2: oil pipe

3: first preheat heater 10: inner burner body

10a: side wall

The present invention relates to a fuel injection device for an evaporative petroleum combustor, in particular, to form a long combustion air supply pipe and to embed a preheating heater on the lower surface thereof, and to supply the oil supply pipe to the upper surface of the combustion air supply pipe. The present invention relates to a fuel injection device for a vaporized petroleum combustor capable of suppressing the generation and smell of tar in the vaporizer and increasing the vaporization efficiency as well as improving the ideal combustion efficiency.

In the conventional fuel injection device for a vaporized petroleum combustor, as shown in FIG. 1, the inner burner body having a container shape cast by aluminum die casting so that the side wall portion 10a and the bottom portion 10b are integrally formed ( 10 is inserted into the outer burner body 5, and a cutout is formed in the opening 10c of the inner burner body 10 so that the induction member 12 having the salt hole 12a formed thereon is placed on the side wall. The burner head member 11 is placed at the upper opening of the guide member 12, and a bulging portion 10d is formed at the lower portion of the opening 10c in which the preheat heater 6 is embedded. It is formed integrally.

In addition, the upper flange portion 5a of the outer burner main body 5 is provided with an igniter 7 as a spark ignition rod for igniting the mixed gas discharged into the salt hole 12a of the induction member 12 at the beginning of combustion. On the other side, a frame rod 8 as a flame sensing rod for detecting a flame formed through the flame hole 12a of the induction member 12 is disposed, and also the inner burner body 10 and the outer burner body 5 are disposed. On one side of the side wall portion of the combustion air supply pipe 23 in which the oil feed pipe 22 is installed is conveniently fixed by screwing.

By the way, in the conventional fuel injection device of the vaporized petroleum combustor comprised in this way, it heats and vaporizes by the heat_generation | fever of the preheating heater 6 embedded in the bulging part 10d of the inner burner main body 10, and forms a mixed gas. The combustion air supplied from the combustion air supply pipe 23 conveniently disposed in the side wall portions of the outer and inner burner bodies 5 and 10, and the petroleum fuel injected from the oil supply pipe 22 are the inner burner bodies. (10) Since it has a structure that is continuously supplied and injected only to one point (oil contact point) directly toward the side wall portion 10a in (10), the projection of combustion air and petroleum fuel continuously supplied and injected toward this point. Due to the frequent temperature change caused by the change in temperature, the normal burner of the inner burner body 10 cannot be maintained, and thus the injected petroleum fuel is not completely vaporized and flows directly to the bottom portion 10b along the side wall portion 10a, and thus combustion air The tar is mixed with foreign matter such as floating and at the same time scale at the bottom portion (10b) in, there is a problem that not only generate the smell, the vaporization efficiency of the fuel oil is reduced, the combustion efficiency drops.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to suppress the accumulation and smell of tar at the bottom of the inner burner body, at the same time to increase the vaporization efficiency, as well as to improve the combustion efficiency. The present invention provides a fuel injection device for a vaporized petroleum combustor.

In order to achieve the above object, the present invention provides a combustion air supply means for supplying combustion air by driving an oil pipe blowing means for receiving and injecting petroleum fuel by the pumping action of an electronic pump, and the oil supply pipe and the combustion air supply pipe. In the vaporized petroleum combustor comprising an inner burner body for heating and vaporizing petroleum fuel and combustion air injected from the gas, and a burner head member for burning a mixed gas heated in the inner burner body. A first preheater is embedded at the bottom of the supply pipe to supply combustion air and to vaporize the petroleum fuel injected from the oil pipe.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a sectional view showing a fuel injection value of the vaporized petroleum combustor of the present invention, FIG. 3 is a sectional view taken along the line A-A of FIG. 2, and FIG. 4 is a sectional view taken along the line B-B of FIG.

2 to 4, (10) is an inner burner main body, the cylindrical side wall portion (10a) and the bottom portion (10b) is formed integrally with an opening (10c) formed on the top, At one side of the side wall portion 10a, the combustion air supply pipe 1 is supplied so that the combustion air supplied by the blowing means (not shown) is supplied horizontally toward the side wall portion 10a in the inner burner body 10. ) Is eccentrically screwed to and disposed on the inner burner body 10 through the side wall of the outer burner body 5. That is, the combustion air supply pipe (1) is eccentrically disposed in the side wall portion (10a) of the inner burner body 10, the combustion air supplied from the combustion air supply pipe (1) is the inner burner body (10) It is arranged so as to form a constant vortex along the circumferential surface of the inner side wall portion 10a.

In addition, the upper surface (1a) of the combustion air supply pipe (1) so that the petroleum fuel supplied by the electronic pump (not shown) can be injected toward the bottom surface (1b) in the combustion air supply pipe (1) 2) is disposed, and this oil pipe 2 is disposed inclined to the upper surface 1a at a predetermined angle in the direction of the combustion air supply flowing through the combustion air supply pipe 1. That is, the oil feed pipe 2 is installed through the upper surface 1a of the combustion air supply pipe 1 at a predetermined distance from the side wall portion 10a of the inner burner body 10, and is used for combustion. The nozzle portion of the oil supply pipe 2 which penetrates the upper surface 1a of the air supply pipe 1 is spaced a predetermined distance toward the first preheating sheet 3 embedded in the bottom 1b of the combustion air supply pipe 1. Is located.

In addition, in the bottom surface 1b of the combustion air supply pipe 1, combustion air supplied into the inner burner body 10 along the combustion air path and the inside of the combustion air path are injected to the bottom surface 1b. The first preheat heater 3 is embedded a predetermined distance from the side wall portion 10a of the inner burner body 10 to the oil pipe 2 so that petroleum fuel is primarily heated and vaporized. That is, at least two or more first preheat heaters 3 are embedded in the bottom surface 1b of the combustion air supply pipe 1 along the longitudinal direction, and the first preheat heaters 3 are It is buried in the bottom surface 1b of the combustion air supply pipe 1 between the front end of the combustion air supply pipe 1 fitted into the inner burner body 10 and the oil supply pipe 2.

In addition, a second preheating heater is provided near the upper portion of the inner burner body 10 to heat the combustion air supplied in the inner burner body 10 and to vaporize the primary petroleum fuel secondaryly. The bulging part 10e in which 6) is embedded is integrally formed.

On the other hand, the inner burner body 10 is accommodated in the outer burner body 5, and when the mixed gas is discharged from the salt hole 12 on one side of the flange portion 5a, the mixed gas is ignited. When the igniter 7 is provided as a spark ignition rod, and the flame is formed by igniting the mixed gas discharged from the salt hole 12a to be described later by the igniter 7 on the other side of the flange portion 5a. The frame rod 8 as a flame detection rod which detects this flame is provided.

In the drawing, reference numeral 11 denotes a burner head member, and the burner head member 11 includes an induction member having a guide hole 12c bored through the bottom portion 12b and a plurality of salt holes 12a bored through the side wall portion. 12 is mounted on the opening 10c of the inner burner body 10, and the discharge hole 17a is allowed to rectify and pass the mixed gas at a predetermined height from the top of the bottom 12b in the guide member 12. The rectifying plate 17 having a plurality of) is horizontally mounted by at least two fixing rods 16 which are locked and pressed vertically to the bottom portion 12b, and the bottom portion in the induction member 12. At a predetermined height from the upper portion of the upper portion 12b, the circumferential edge of the cylindrical portion covers the rectifying plate 17, which is placed on the upper portion of the bottom portion 12b of the induction member 12, from the rectifying plate 17. At the same time as mixing the rectified and elevated mixed gas, the side wall of the induction member 12 A mixer 18 having an outlet hole 18a formed in the ceiling portion is fitted to the fixed rod 16 so as to pass through the salt hole 12a as indicated by an arrow.

In addition, an upper surface of the upper sidewall portion of the induction member 12 seals the upper portion of the induction hole 12 so as to easily guide the mixed gas raised through the outlet hole 18a of the mixer 18 to the outer surface. The upper plate member 20 in which the center portion is recessed and the concave portion is inserted into the fixing rod 16 is fastened and assembled by a nut 21, and the lower side of the upper plate member 20 blocks heat generated during combustion. A heat shield member consisting of a heat shield plate 19 and an insulation packing 19a is placed by the stepped portion formed on the fixing rod 16 to be in close contact with the upper plate member 20.

In addition, the outer and inner surfaces where the salt holes 12a are formed in the side wall of the induction member 12 have flat cylindrical outer, middle and inner metal meshes 13, 14 and 15 so as to reduce combustion noise during combustion. It is closely fixed by spot welding.

That is, the burner head member 11 has a lower end portion of the outer metal mesh 13 and a lower end portion 12b of the induction member 12 on the cutout portion formed inside the opening portion 10c of the inner burner body 10. After the surface is placed, the end portion thereof is fixedly fixed by the fixing screw 9 at the upper end of the at least two fixing rods 10d, which are integrally disposed on the bottom portion 10b of the inner burner body 10. do.

Next, the operational effects of the fuel injection device of the vaporized petroleum combustor of the present invention configured as described above are as follows.

As shown in FIGS. 2 to 4, when the main switch (not shown) of the petroleum burner is turned on, power is supplied to the first preheater 3 and the second preheater 6, respectively. (1) and the inner burner body (10) is preheated, and the first and second preheat heaters (3) and (6) bring the combustion air supply pipe (1) and the inner burner body (10) to a normal condition temperature. When heated, it detects whether the thermistor (not shown) is heated above a certain temperature of the combustion air supply pipe (1) and the inner burner main body (10), and inputs it to a microcomputer (not shown), whereby an electronic pump (not shown) And blower means.

That is, when the electronic pump is operated to pump petroleum fuel stored in a fuel tank (not shown), the petroleum fuel is supplied along the oil pipe 2 installed inclined to the upper surface 1 a of the combustion air supply pipe 1. At the same time, it is sprayed from the nozzle portion of the oil supply pipe 2 protruding into the combustion air supply pipe 1 toward the bottom surface 1b of the combustion air supply pipe 1 to generate heat of the first preheated heater 3. By the contact with the bottom surface (1b) preheated to a predetermined temperature by the primary gas (state of semi-evaporated gas), and the primary petroleum fuel is the combustion air of the combustion air supply pipe (1) from the blowing means It is supplied to the side wall portion 10a in the inner burner body 10 along the path and is buried in the bulge portion 10e of the inner burner body 10 while forming a vortex in one direction along the curved surface of the side wall portion 10a. On the side wall portion 10a that is heated by the heat of the second preheater 6. Catalyst to be chagihwa 2 (a state of complete gasification gas).

In addition, the secondary vaporized gas is mixed with the heated combustion air to form a mixed gas, the mixed gas is increased by the supply pressure of the combustion air, the induction formed in the bottom portion 12b of the induction member 12 The hole 12c passes through the discharge hole 17a of the resistance plate 17 due to the pressure difference acting as a venturi tube, and the outflow of the mixer 18 covered at the upper portion with a predetermined distance from the resistance plate 17. The inner metal mesh 15, the intermediate metal mesh 14, the salt hole 12a, and the outer metal mesh (through the predetermined gap formed by the ceiling of the mixer 18 and the heat shield plate 19 through the holes 18a) Guided by 13) and ignited by the igniter 7 to perform combustion.

As described above, according to the fuel injection device of the vaporized petroleum combustor of the present invention, when the combustion air and petroleum fuel are supplied and injected into the inner burner main body from the combustion air supply pipe and the oil supply pipe, Semi-evaporated gas is formed by primary heating and vaporization by the heating of the embedded first preheater, and further heating and vaporization by the heating of the second preheater embedded in the inner burner body to complete vaporization. Since the gas is formed, the concern that the temperature cannot be maintained above a certain level due to the frequent temperature change caused by the projection of the combustion air and the petroleum fuel continuously supplied and injected toward one point in the inner burner body is eliminated. This suppresses tar accumulation and odor and at the same time increases the evaporation efficiency, as well as the ideal combustion effect. A very practical devised to improve.

Claims (4)

An oil supply pipe for supplying and injecting petroleum fuel by the pumping action of the electromagnetic pump, a combustion air supply pipe for supplying combustion air by driving the blower means, petroleum fuel injected and supplied from the oil supply pipe and the combustion air supply pipe, and In the vaporized petroleum combustor comprising an inner burner body for heating and vaporizing combustion air, and a burner head member for burning a mixed gas heated in the inner burner body, the bottom surface of the combustion air supply pipe 1 ( 1b) is a fuel injection device of a vaporized petroleum combustor characterized in that the first preheat heater (3) is embedded to supply the combustion air and to vaporize the petroleum fuel injected from the oil pipe (2). . The fuel of the vaporized petroleum combustor according to claim 1, wherein at least two first preheat heaters (3) are embedded in the bottom surface (1b) of the combustion air supply pipe (1) laterally. Injector. According to claim 1, wherein the first preheating heater (3) is the front end of the combustion air supply pipe (1) fitted to the inner burner body 10, and the combustion air supply pipe at a predetermined distance from the front end ( 1) A fuel injection device for a vaporized petroleum combustor, which is embedded only between a bottom face (1b) and an oil pipe (2) inserted and disposed to penetrate. The vaporized petroleum combustor according to claim 1, wherein the oil pipe (2) is inclined on the upper surface (1a) at a predetermined angle in a direction of supplying combustion air flowing through the combustion air supply pipe (1). Fuel injection device.