JP3210230B2 - Vaporized oil combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasoline-type oil combustion apparatus provided with a heating heater constituting a combustion section of a heater or a water heater.

[0002]

2. Description of the Related Art Conventionally, in this kind, as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-60307,
The burner hole and the secondary air supply are separately formed as separate parts, and the combustion in the burner is performed by the secondary air supply that is laid out in the combustion flame formed in the burner. By supplying the secondary air, a stable combustion state can be obtained.

[0003]

In this conventional apparatus, however, the flame hole and the secondary air supply section are formed separately from each other, so that the number of parts is increased and assembly is difficult and expensive. The secondary air supplied from the secondary air hole is not ejected because the flame hole of the flame hole and the secondary air of the secondary air supply unit are formed on the same plane. At the same time, it is supplied in the combustion flame, cannot be supplied after rectification, and there is a problem that turbulence occurs during combustion and good combustion cannot always be obtained.

[0004]

The present invention focuses on this point and solves the above-mentioned drawbacks. In particular, the present invention is directed to a vaporizer provided with a heating heater, which is used to predict the vaporized gas and combustion air. In forming a mixed gas and burning it in a burner section through a mixing chamber, the burner section is composed of a plurality of alternately provided flame holes and a secondary air supply section. Further, the flame holes are formed in a convex shape, and slender inverted L-shaped flame holes extending from the substantially central portion to the side walls are formed alternately on the top and left along the longitudinal direction. The secondary air supply section is formed by a concave portion between adjacent flame holes and has a secondary air hole at the bottom.

[0005]

After energizing the heating heater 12 to heat the carburetor 1 to the set vaporization temperature, the combustion fan 40 and the electromagnetic pump 42 are driven so that the fuel oil and the primary combustion gas are contained in the carburetor 1. When air is supplied, the fuel oil is vaporized to form a premixed gas, and the mixed gas is supplied to the burner 23 through the mixing chamber 16.
It is burned in.

[0006] The combustion of the burner 23 causes the flame hole 2
Since the flames formed in No. 4 have the flame holes 26 formed alternately on the left and right sides, they are formed alternately on the left and right, and the remainder is sufficiently secured. Since the flames are alternated even if the flames become large due to the large thermal combustion, good combustion flames can always be formed without interference.

Further, since the secondary air supply section 25 arranged in parallel with the flame hole 24 is formed by a concave portion between the adjacent flame holes 24 and the secondary air hole 27 is provided at the bottom, the secondary air supply section 25 is provided. Part 2
5 It is easy and cheap to assemble without the need for dedicated parts,
Moreover, there is a predetermined space from the secondary air hole 27 to the flame hole 26 which is a combustion part, and the ejected secondary air is supplied to the combustion flame after being rectified without fail, so that turbulence does not occur. Good combustion can always be performed.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vaporized oil combustion apparatus according to the present invention. Reference numeral 1 denotes a horizontal bowl-shaped vaporizer made of aluminum die-cast, the front surface of which is closed by a lid 4 having a fuel injection nozzle 2 and a primary air outlet 3 and is divided into two by a partition wall 5 at the bottom. An outlet 6 for the mixed gas is formed.

The carburetor 1 has an inner surface facing the fuel injection nozzle 2 formed perpendicular to the fuel injection nozzle 2 to form a vertical vaporization surface 7, and a portion where the fuel oil is sprayed has a uniform diffusion of the fuel oil. A flat surface 8 for measuring the fuel flow, and a plurality of beads 9 having different lengths are arranged around the flat surface 8 in a horizontal direction and in parallel with each other to form a meandering path 10 for the fuel oil flowing down. Is formed.

The flat surface 8 and the meandering path 10 each have one injection hole 11 formed on the left and right sides of the fuel injection nozzle 2. Are provided.

Reference numeral 12 denotes a U-shaped sheet cast in the vaporizer 1.
A heating heater composed of a heater protrudes from the upper side of the vertical vaporizing surface 7 toward the fuel injection nozzle 2 and protrudes slightly from below the vertical vaporizing surface 7 to cover the space above the vertical vaporizing surface 7. It is cast into the lower wall 14 forming the outlet 6.

Reference numeral 15 denotes a trapezoidal guide wall as viewed from a plane provided at the last end of the meandering path 10 of the carburetor 1, and a mixed gas formed in the carburetor 1 by the vaporized gas and the primary air for combustion. It is divided into two outlets 6 and guided smoothly.

Reference numeral 16 denotes an aluminum die-casting mixing chamber provided at the lower part of the vaporizer 1. The mixing chamber 17 communicates with the outflow port 6 and is depressed one step downward so as to rectify the mixed gas. And a plurality of gas chambers 19 having alternately formed secondary air chambers 18 which communicate with the rectifying chamber 17 and are tapered and formed therebetween and communicate downwardly therebetween.
7 has an auxiliary heater 2 formed of a U-shaped sheath heater at the bottom.
0 is cast, and is energized only for a predetermined time during preheating to preheat the mixing chamber 16.

By coating a heat-resistant paint on the inner surface of the mixing chamber 16 to form a coated surface 21 having fine irregularities, the flow velocity of the mixed gas is made uniform as the flow resistance of the mixed gas, and the rectification is promoted. To measure.

Reference numeral 22 denotes a flow straightening plate provided at the inlet of each gas chamber 19 from the upper side. The straightening plate 22 is formed by alternately forming cutouts and bent pieces on a single plate. / 6
Is closed from above, thereby suppressing the sending of wind to the gas chamber 19 to prevent the flame from being biased, thereby forming a uniform flame as a whole.

Reference numeral 23 denotes a burner portion formed on the back side of the vaporizer 1 above the gas chamber 19 and the secondary air chamber 18 of the mixing chamber 16, and a convex flame hole fixed on the gas chamber 19. Part 24
And a secondary air supply unit 25 formed by a concave portion between the adjacent flame holes 24 and communicating with the secondary air chamber 18. At the top of the flame hole 24, it extends substantially from the center to the side wall. Elongated inverted L-shaped flame holes 26 are formed alternately on the left and right along the longitudinal direction. Further, a secondary air hole 27 communicating with the secondary air chamber 18 is formed at the bottom of the secondary air supply unit 25. The small holes formed in the flange portion 28 of the portion 24 are formed by overlapping, so that the distance from the flame hole 26 is secured and the rectification of the secondary air can be performed reliably.

Numeral 29 denotes a flame holding guide fixed to both sides of the flame hole portion 24. The flame holding guide is formed in the flame hole 26 by bending the upper portion facing the flame hole 26 obliquely upward on the opposite side to the flame hole 26. It suppresses the spread of the flame and guides the secondary air supplied from below.

Reference numeral 30 denotes a heat-resistant rectifier provided in the flame hole portion 24. The heat rectifier member is formed by knitting a wire having a wire diameter of 0.29 mm into 36 mesh, and performs the final rectification of the mixed gas ejected from the flame hole 26. Is what you do.

Numeral 31 denotes a vertically long heat absorbing fin projecting from the back of the vaporizer 1 onto the burner portion 23, and is formed in a plurality of portions so as to increase a contact area with a combustion gas to increase a heat back amount. At the time of combustion, the heat back of the combustion heat is used as heat of vaporization to reduce the power consumption of the heating heater 12, and the upper end is formed as an inclined portion 32 inclined downward toward the burner portion 23 and raised. This is to improve the escape of combustion heat.

Further, a flame hole portion 24 is disposed below each of the heat absorbing fins 31 so that the flame hole portion 24 between the heat absorbing fins 31 is about 10 times as large as the other flame holes 26. Forming a large flame hole 33 consisting of two squares,
A single longitudinal groove 34 extending from the lower end to the upper end is provided substantially at the center of the protruding end surface of each heat absorbing fin 31.
The structure is such that the flame enters and the heat absorption area increases.

Reference numeral 35 denotes an L provided above the heat absorbing fin 31.
The heat-suppressing fins 31 are approximately 2
３ to cover the space between the heat absorbing fins 31 and the vertical groove 34 to suppress the rising force of the combustion heat rising between the heat absorbing fins 31. Alternatively, the suppression force may be adjusted by forming a slit or a hole in the suppression plate 35 itself.

Reference numeral 36 denotes an uneven surface formed by continuously forming a plurality of R-shaped convex portions on the back wall of the vaporizer 1 between the heat absorbing fins 31 to increase the heat absorbing area and to control the rising force of the combustion heat. I am trying to get enough heat back,
In particular, because of the R shape, it is possible to smoothly suppress only the rising force without causing turbulence in the combustion heat.

Reference numeral 37 denotes a combustion chamber surrounding the upper part of the burner section 23, and its outer periphery is covered by a cover frame 39 via an air chamber 38.

Numeral 40 denotes a combustion fan, which communicates with the jet port 3 and the air chamber 38 through an air passage 41, supplies primary air for combustion to the jet port 3, and feeds the air chamber 38 to the side of the carburetor 1. The secondary air supplied to the secondary air supply unit 25 of the burner unit 23 from below the mixing chamber 16 through the air supply unit and the air for cooling the combustion chamber 37 are supplied.

Reference numeral 42 denotes an electromagnetic pump for supplying fuel oil to the fuel injection nozzle 2 via an oil pipe 43, and reference numeral 44 denotes a heat shield plate.

Next, the operation of the embodiment of the present invention will be described. When the heating heater 12 is energized to heat the vaporizer 1 to a predetermined temperature, this is detected by a temperature sensor (not shown) provided at an appropriate position, and the combustion fan 40 and the electromagnetic pump 42 are detected.
Is driven, fuel oil is supplied to the carburetor 1 from the fuel injection nozzle 2, and primary air for combustion is supplied from the injection port 3.

In the carburetor 1, the fuel oil injected from the fuel injection nozzle 2 collides with the flat surface 8 of the vertical vaporization surface 7 and diffuses uniformly around the surface because there is no unevenness. The primary air supplied on the bead 9 moves in a sequential manner along the meandering path 10 due to the wind blown by the primary air. The primary air also causes turbulence and is sufficiently mixed with the vaporized gas, so that a good mixed gas can be obtained.

Therefore, the lightweight and compact vaporizer 1 can be obtained by the vertical vaporizing surface 7, a compact and powerful combustion device can be obtained, and a sufficient mixed gas can always be formed without lowering the vaporizing ability. Things.

The vaporized gas vaporized on the vertical vaporizing surface 7 is
The primary air which collides with the vertical vaporizing surface 7 and rebounds flows in the horizontal bowl-shaped vaporizer 1 to the upper and lower side walls 13 and 14 provided with the heating heaters 12.
Since the heater 4 is sufficiently heated by the heating heater 12, the vaporization of the vaporized gas is further promoted, and the primary air is also heated well. Does not flow out immediately, but stays in the vaporizer 1 to a certain extent and after being sufficiently mixed, flows out from the outlet 6.

On the other hand, the mixed gas flowing out from the outlet 6 flows into the mixing chamber 16, and the mixing chamber 16 is heated for a predetermined time by the auxiliary heater 20 which is energized simultaneously with the preheating of the vaporizer 1, and Since the high-temperature preheating state is maintained, the inflowing mixed gas does not liquefy.

The mixed gas promotes rectification in the rectification chamber 17 and then immediately splits finely into a plurality of gas chambers 19 and flows into the plurality of gas chambers 19. The ejection speed of the mixed gas ejected from the flame holes 26 of the 24 becomes uniform irrespective of the longitudinal direction,
The mixed gas is rectified immediately before being ejected from the flame hole 26.
After passing through zero, it is finally rectified and ejected, and combustion is started if it is appropriately ignited by ignition means (not shown).

Further, since the flame holes 26 in which the flame is formed are provided alternately on the left and right at the top of the flame hole portion 24, the remaining portion is sufficiently secured and the strength is high, so that there is no fear of burning out even during long-term combustion. Also, even if the flame becomes large due to the large thermal combustion, the formed flame is alternately left and right, and a good combustion flame can be obtained without interfering with each other.

Further, a secondary air supply section 25 is formed between each of the flame holes 24, and a flame hole 26 is extended to the side wall surface of the flame hole 24, and a flame holding guide 29 guides this. Therefore, the spread of the flame formed in each of the flame holes 26 is suppressed by the flame holding guide 29 and the flame is guided at the bent portion, and the flame protrudes above the secondary air supply part 25, and the secondary The secondary air is supplied from the air hole 27. There is a distance between the time when the secondary air is ejected and the time when the secondary air is supplied to the combustion flame. During this time, the secondary air is reliably rectified and supplied. Therefore, good combustion is always performed.

Further, since the secondary air supply section 25 is formed by a concave portion between the adjacent flame holes 24, a special component is not required and the structure is simple. The air supply section 25 is also formed, and can be easily assembled and inexpensive.

On the other hand, between the above-mentioned heat absorbing fins 31 during combustion,
A larger flame is formed in the large flame hole 33, and a large amount of combustion heat rises between the heat absorbing fins 31, so that the vaporizer 1 obtains a sufficient heat back amount through the heat absorbing fins 31,
After the start of combustion, heat is not supplied to the heating heater 12, and heat of vaporization can be obtained by heat-back, thereby ensuring power saving.

If a hot water supply heat exchanger (not shown) through which water flows inside is installed above the combustion chamber 37, a good hot water supply with low combustion noise and good responsiveness can be obtained. It is.

[0037]

In short, the present invention is a vaporizer provided with a heater for heating, which forms a premixed gas of a vaporized gas and combustion air, and burns it in a burner section through a mixing chamber. The burner portion is composed of a plurality of alternately provided flame holes and a secondary air supply portion. Further, the flame holes are formed in a convex shape, and the top portion has a substantially central portion. Elongated inverted L-shaped flame holes extending from side to side wall are formed alternately on the left and right along the longitudinal direction, and the secondary air supply part is formed by a concave portion between adjacent flame holes, and a secondary Since the air holes are provided, good flame can be formed and there is no fear of burning out even if the combustion is performed for a long period of time. In addition, good combustion can be always obtained while being simple and inexpensive.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vaporized petroleum combustion apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the combustion chamber.

FIG. 3 is a sectional view of the main part.

FIG. 4 is an exploded perspective view of the main part.

FIG. 5 is an enlarged sectional view of the main part.

FIG. 6 is a front view of the vaporizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vaporizer 12 Heating heater 16 Mixing chamber 23 Burner part 24 Flame hole 25 Secondary air supply part 26 Flame hole 27 Secondary air hole

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takahiro Kimura 7-7 Higashi Shinbo, Sanjo-shi, Niigata Examiner, Corona Co., Ltd. Katsuyuki Higashi (56) References JP-A-6-300226 (JP, A) JP-A Heihei 3-158608 (JP, A) JP-A-5-126318 (JP, A) JP-A-2-71005 (JP, A) JP-A-4-151410 (JP, A) JP-A-2-219901 (JP, A) A) JP-A-5-60307 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 11/10 F23D 11/40 F23D 11/44

Claims (1)

(57) [Claims] 1. A vaporizer having a heating heater, wherein a premixed gas of a vaporized gas and combustion air is formed, and the premixed gas is combusted in a burner section through a mixing chamber. The burner portion is composed of a plurality of alternately provided flame holes and a secondary air supply portion. Further, the flame holes are formed in a convex shape, and the top portion extends substantially from the center to the side wall. Left and right elongated inverted L-shaped flame holes are alternately formed along the longitudinal direction, and the secondary air supply section is formed by a concave portion between adjacent flame hole portions and has a secondary air hole at the bottom. A vaporized oil combustion device characterized by the following: