JP5144297B2 - 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. trumpet-shaped air guide hands to guide the combustion air covers the following air hole It is those with a.

  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 surely supplied, and good combustion is always obtained. Further, the secondary combustion air is supplied from the secondary air chamber to the upper burner section. As a result, the air is smoothly supplied without stagnant air and good complete combustion can be obtained.

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.

  15 is a cover body covering the whole except for the back surface of the carburetor 1, a primary air hole 16 that communicates with the venturi section 4 and supplies primary combustion air, and a lower part thereof includes an outer periphery of the lid 5 and an outer periphery of the carburetor 1 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. It is provided in communication with the part.

  Reference numeral 21 denotes a stainless steel tapered gas chamber in which the mixed gas from the outlet 7 is introduced on the back side of the vaporizer 1 and burned in the burner portion 22 in only one row at the upper end. It is covered with a stainless steel box-shaped secondary air chamber 24 having a communication port 23 communicating with the passage 17, and a gap between the upper surface of the secondary air chamber 24 and the one row of burner portions 22 is formed as a secondary air hole. 25, and a flame holding plate 26 for secondary air rectification is provided between the secondary air holes 25 and the burner portion 22 on both sides.

  Further, a flame hole 27 composed of a plurality of lateral slits is formed on the upper surface of the burner portion 22, and of these flame holes 27, a flame hole 27 facing a plurality of heat-absorbing fins 28 for heat back on the back of the vaporizer 1. Has a larger flame hole 29 than the others.

Reference numeral 30 denotes a triangular mountain-shaped drift plate provided near the entrance of the bottom of the gas chamber 21 and guides a part of the mixed gas flowing into the gas chamber 21 toward the large flame hole 29 side.
Reference numeral 31 denotes a spark plug provided on the carburetor 1 side on the burner portion 22, and reference numeral 32 denotes a frame rod provided on the burner portion 22 on the opposite side of the spark plug 31.
A combustion chamber 33 includes the vaporizer 1 on one side and covers the gas chamber 21, the burner unit 22, and the secondary air chamber 24.

  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 21.

  Since the flow rate of the mixed gas flowing into the gas chamber 21 is suppressed by the baffle plate 14, the gas chamber is tapered without being concentrated in the large flame hole 29 of the burner portion 22 near the outlet 7. After being distributed to the opposite side in 21, it is uniformly discharged from all the flame holes 27 of the upper burner portion 22, ignited by the discharge of the spark plug 31, and stably burned.

  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, air is vigorously ejected from the venturi section 4 to the vertical vaporization surface 8, supplied to the burner section 22 through the residue chamber 21 while being premixed with the vaporized gas, and burned.

  The secondary combustion air that has flowed into the secondary air hole 18 passes through the secondary air passage 17 on the outer periphery of the carburetor 1 and enters the secondary air chamber 24 covering the gas chamber 21, and receives heat from the residue chamber 21. As the temperature rises, it is discharged smoothly and smoothly from the secondary air holes 25 formed by a gap between the upper surface of the gas chamber 21 and both side walls of the burner portion 22, and is guided to the flame holding plates 26 on both sides and supplied to the combustion flame. However, the supplied secondary combustion air is supplied in a straight layer without any breaks, and can burn the entire burner portion 22 satisfactorily without causing lift combustion or red fire combustion. Good combustion of complete combustion is performed, and indoor heating is performed with this combustion heat.

  Therefore, by covering the gas chamber 21 with the secondary combustion chamber 24, the secondary combustion air supplied to the burner section 22 is heated, and the supplied secondary air is supplied in a straight layer without any breaks. 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 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 Gas Chamber 22 Burner 24 Secondary air chamber 25 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 provided with a trumpet-shaped air guiding means for covering the primary air hole and the secondary air hole and guiding the combustion air. Vaporization type oil combustion equipment characterized by things.

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