JP5026300B2 - Vaporizing oil combustion equipment - Google Patents

Description

  The present invention relates to a vaporization type oil combustion apparatus provided with a vaporization heater that constitutes a combustion section of a heater or a water heater.

Conventionally, in this type, the primary combustion air supplied to the carburetor is supplied from an outlet opening in the air passage, and the secondary combustion air is supplied from an air passage other than the outlet to the outer periphery of the carburetor. Or, it passed through the outer periphery of the combustion chamber and was supplied from the bottom of the burner to the burner. (For example, refer to Patent Document 1.)
Japanese Patent No. 3210229

  By the way, in this conventional type, neither primary combustion air nor secondary combustion air is actively supplied, but it is left to the process. Especially, the secondary combustion air is compared with the outer circumference of the carburetor and the outer circumference of the combustion chamber. If the air is supplied from a wide space, there is a problem that the momentum is lost and the supply to the combustion section does not go well and good combustion cannot be obtained, or the combustion air stays without being supplied to the combustion section. It was.

  The present invention pays attention to this point and solves the above-mentioned drawbacks. In particular, the configuration is a box-type vaporizer provided with a vaporization heater and formed with a mixed gas outlet at the bottom, and the back side of the vaporizer. A gas chamber having a burner portion at the upper portion thereof in communication with the outlet, a fuel injection nozzle for spraying fuel on a lid for closing the vaporizer, and a venturi portion for supplying combustion air. The vaporizer has a box-shaped secondary air chamber that covers the gas chamber and exposes the burner portion on the upper surface, and has straight secondary air holes in the lower portions of both side walls of the burner portion. Provided with a cover body that covers the vaporizer, and provided with a primary air hole communicating with the venturi section and a secondary air hole communicating with the secondary air chamber. Air guide means for covering the next air hole and guiding the combustion air is provided. In both cases, a secondary air guide plate having an inverted L-shaped cross section is provided on the inner side of the cover body facing the secondary air hole to guide the inflowing secondary combustion air downward and to pass through the vaporizing heater embedded portion at the bottom of the carburetor. It is provided.

  According to the present invention, the combustion air supplied from the combustion fan is divided into the primary combustion air and the secondary combustion air for the first time at the primary air hole and the secondary air hole formed in the cover body guided by the air guiding means. Since it is supplied, both the primary air and the secondary air are vigorously and reliably supplied, and good combustion is always obtained. Further, the secondary combustion air supplied from the secondary air hole is Because it is guided by the air guide plate, there is no worry of directly impacting the vaporizer and lowering the temperature of the vaporizer to affect the vaporization of the fuel oil, and the secondary combustion air is finally used for vaporization embedded in the bottom of the vaporizer The secondary combustion air that is heated by the heater and smoothly flows into the secondary air chamber, and the secondary combustion air that has flowed into the secondary air chamber will be supplied from the secondary air chamber to the upper burner portion. Good supply without stagnant air One in which it is possible to obtain a complete combustion.

Next, an embodiment of the present invention will be described based on a vaporized oil combustion apparatus shown in the drawings.
Reference numeral 1 denotes a vertically long box type carburetor made of aluminum die cast in which a U-shaped vaporizing heater 2 is cast on a side wall, and a front face is a fuel injection nozzle 3 and a venturi section 4 which is a primary air outlet for combustion. The mixed gas outlet 7 is formed in the lower part which is closed by the lid 5 provided with the above and partitioned by the partition wall 6 protruding in the center.

  The carburetor 1 has an inner surface facing the fuel injection nozzle 3 and the venturi section 4 formed perpendicular to the fuel injection nozzle 3 and the venturi section 4 to form a vertical vaporization surface 8 (vaporization surface), and fuel oil and primary The portion to which the combustion air is blown is a flat surface 9 in order to achieve a uniform diffusion of the fuel oil, and further communicates with the side wall of the carburetor 1 on both sides of the flat surface 9 except directly below the flat surface 9. A horizontal bead 10 is provided, and below this horizontal bead 10, a mountain-shaped bead 11 having a vertex corresponding to the flat surface 9 is provided. It is something to be made.

  Further, a horizontal plate 12 protruding from the lid 5 toward the vertical vaporization surface 8 is provided between the venturi portion 4 and the partition wall 6, and the vertical vaporization surface 8 and the lid 5 are separated by the partition wall 6. A meandering path 13 is formed between them, and a rectifying plate 14 protruding in a U-shape from the lid 5 is provided in front of the outlet 7, and mixing is promoted through the meandering path 13. The mixed gas once hits the rectifying plate 14 to suppress its momentum and flow to the outlet 7 while being rectified.

  Reference numeral 15 denotes a cover body that covers the entire surface except for the back surface of the carburetor 1. The cover body 15 includes a primary air hole 16 that communicates with the venturi portion 4 and supplies primary combustion air. The secondary air passage 17 is provided with a secondary air hole 18 for supplying secondary combustion air, and a trumpet-shaped air guide means 19 for smoothly supplying air to the two supply holes 16, 18 is provided for blowing the combustion fan 20. The secondary air passage 17 provided inside the cover body 15 is attached to the inside of the cover body 15 so as to cover the secondary air hole 18, and from the secondary air hole 18. The inflowing secondary combustion air is partitioned into a secondary air guide plate 21 having an inverted L-shaped cross-section so that it does not directly hit the lid 5, and flows downward and passes through the vaporizing heater buried portion 22 at the bottom of the vaporizer 1. It is heated sequentially by doing.

  23 is a stainless steel taper gas chamber made of stainless steel which is made to flow in the gas mixture from the outlet 7 on the back side of the vaporizer 1 and burned in the burner portion 24 in only one row at the upper end. It is covered with a stainless steel box-shaped secondary air chamber 26 having a communication port 25 communicating with the passage 17, and a gap between the upper surface of the secondary air chamber 26 and the one row of burner portions 24 is formed as a secondary air hole. 27, and a flame holding plate 28 for secondary air rectification is provided between the secondary air holes 27 and the burner portion 24 on both sides.

  In addition, a flame hole 29 composed of a plurality of lateral slits is formed on the upper surface of the burner portion 24, and of these flame holes 29, the flame holes 29 facing the heat absorption fins 30 for heat back on the back of the vaporizer 1. Is a larger flame hole 31 than the others.

Reference numeral 32 denotes a triangular mountain-shaped drift plate provided near the entrance at the bottom of the gas chamber 23, and guides a part of the mixed gas flowing into the gas chamber 23 toward the large flame hole 31.
Reference numeral 33 denotes a spark plug provided on the carburetor 1 side on the burner portion 24, and reference numeral 34 denotes a frame rod provided on the burner portion 24 on the opposite side of the spark plug 33.
A combustion chamber 35 includes the carburetor 1 on one side and covers the gas chamber 23, the burner portion 24, and the secondary air chamber 26.

  Next, the operation of this embodiment will be described. When the vaporization heater 2 is energized and the vaporizer 1 is heated to a predetermined temperature at which fuel oil can be vaporized, a temperature sensor (not shown) provided at an appropriate position is provided. By detecting and driving a combustion fan 20 for supplying combustion air and an electromagnetic pump (not shown) for supplying fuel oil, the carburetor 1 receives fuel oil from the fuel injection nozzle 3 and the venturi section 4 performs primary combustion. Each is supplied with air.

  In the carburetor 1, the fuel injected from the fuel injection nozzle 3 collides with the flat surface 9 of the vertical vaporization surface 8 and vaporizes to become a vaporized gas, and the fuel that could not be vaporized here is horizontal. The gas flows through the beads 10 and the bead 11 and is vaporized and premixed with the primary combustion air supplied from the venturi section 4 to form a mixed gas, which circulates toward the lower outlet 7. First, it circulates through the meandering path 13 formed by the partition wall 6 and the horizontal plate 12, and the mixing is promoted by passing through two bends in the long flow path, and further hits the rectifying plate 14 before the inlet 7. Further, the current plate 14 collides with the upper and lower support plates for projecting from the lid 5, the flow velocity is suppressed, turbulence occurs, and further mixing is promoted, and finally the current plate 14 through the inlet 7 It is intended to flow into the scan room 23.

  Since the flow velocity of the mixed gas flowing into the gas chamber 23 is suppressed by the rectifying plate 14, the gas chamber is tapered without being concentrated in the large flame hole 31 of the burner portion 24 near the outlet 7. After being distributed to the opposite side in 23, it is discharged uniformly from all the flame holes 29 of the upper burner portion 24, is ignited by the discharge of the spark plug 33, and burns stably.

  On the other hand, the combustion air supplied from the combustion fan 20 is divided into the primary air holes 16 and the secondary air holes 18 while being guided by the air guiding means 19, and flows into the primary air holes 16. As described above, the air is vigorously ejected from the venturi section 4 to the vertical vaporization surface 8 and supplied to the burner section 24 through the residue chamber 23 while being premixed with the vaporized gas.

  The secondary combustion air that has flowed into the secondary air hole 18 is guided by the secondary air guide plate 21 and circulates through the secondary air passage 17, and directly hits the lid 5 of the carburetor 1 to cause the vaporization. The secondary air passes through the secondary air passage 17 and is finally heated sequentially by the vaporizing heater embedded portion 22 at the bottom of the vaporizer 1. Then, the air enters the secondary air chamber 26 covering the gas chamber 23, receives the heat from the gas chamber 23 and rises in temperature, and the secondary air is formed by a gap between the upper surface of the gas chamber 23 and both side walls of the burner portion 24. It is discharged from the hole 27 vigorously and smoothly, guided to the flame holding plates 28 on both sides, and supplied to the combustion flame, but the supplied secondary combustion air is supplied in a straight layer without any breaks, and is uniform. Burner section 24 without lift combustion or red fire combustion Are those that can be satisfactorily burn the body, it performed to ensure favorable combustion complete combustion, in which the room heating is performed in this combustion heat.

  Therefore, by covering the gas chamber 23 with the secondary air chamber 26, the secondary combustion air supplied to the burner section 24 is heated, and the supplied secondary air is supplied in a straight layer without any gaps. In combination with this, good combustion can be obtained continuously and can be used with confidence.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of the vaporization type oil combustion apparatus which shows one Embodiment of this invention. Explanatory drawing of the secondary air chamber. Sectional drawing of the same vaporizer. The front view of the same vaporizer. The top view of the burner part. The perspective view of the burner part. Explanatory drawing of the principal part of the burner part. The perspective view of the cover body. The perspective view inside the cover body. The perspective view of the principal part cover body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vaporizer 2 Vaporization heater 3 Fuel injection nozzle 4 Venturi part 5 Lid body 6 Partition wall 7 Outlet 8 Vertical vaporization surface 12 Horizontal plate 13 Meander path 15 Cover body 16 Primary air hole 18 Secondary air hole 20 Combustion fan 21 Two Secondary air guide plate 22 Evaporator heater embedded portion 23 Gas chamber 24 Burner portion 26 Secondary air chamber 27 Secondary air hole

Claims (1)

  A box type vaporizer having a heater for vaporization in which a mixed gas outlet is formed in the lower part, a gas chamber having a burner part in the upper part and communicating with the outlet on the back side of the vaporizer, and a vaporizer The lid that closes the gas generator includes a fuel injection nozzle that sprays fuel and a venturi section that supplies combustion air. The gas chamber covers the gas chamber on the back side of the vaporizer and the burner on the top surface. A box-shaped secondary air chamber with exposed parts, straight secondary air holes at the lower portions of both side walls of the burner, and a cover body that covers the vaporizer. The cover body has a venturi section. Provided with a primary air hole communicating with the secondary air chamber and a secondary air hole communicating with the secondary air chamber, and further comprising air guide means for covering the primary air hole and the secondary air hole and guiding the combustion air, and the secondary air hole. Secondary combustion air flowing into the cover body facing the air hole The guided downward, evaporative oil combustion apparatus, characterized in that with a vaporizer bottom sectional inverted L-shape of the secondary air guide plate for passing the vaporization heater embedded portion.

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