JP5254630B2 - 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, a mixing chamber is provided between the vaporizer and the gas chamber having the burner portion, and the mixed gas is rectified in the mixing chamber and then flows into the gas chamber. There was no deviation and it was burned uniformly. (For example, refer to Patent Document 1.)
Japanese Patent No. 3205691

  In recent years, in order to make the combustor more compact, it has been considered that the mixing chamber is eliminated. However, if the mixing chamber is simply eliminated, the mixed gas formed in the vaporizer is not rectified. When the gas flowed into the gas chamber vigorously, the flame concentrated on the flame holes in the burner near the outflow port, and a uniform flame could not be obtained and stable combustion could not be obtained. .

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 top and communicating with the outflow port, a fuel injection nozzle for spraying fuel from one side facing the carburetor, and a venturi portion for supplying combustion air In addition, a rectifying plate is provided in front of the mixed gas outlet to rectify the flow rate of the mixed gas flowing into the gas chamber, and the rectifying plate is formed in a U-shape from a lid provided with a fuel injection nozzle and a venturi portion. to thereby projecting, the rectifier plate strike the mixing gas above and below the current plate for projecting a with its flow rate is suppressed, further mixing promotes happening turbulence, and finally straightening vanes Flows from the outlet to the gas chamber through the surroundings It is obtained by way.

According to inventions of this, the gas mixture from the carburetor, with suppressed momentum hit always once rectifying plate, so that flow into the gas chamber from being rectified, flame flame port of the burner portion of the outflow opening neighborhood The flame is uniformly formed in the entire flame hole without concentrating on, and the stable combustion is continued, and the rectifying plate is formed in a U-shape from the lid provided with the fuel injection nozzle and the venturi portion. Since it is a protruding structure, the upper and lower rectifying plates can suppress the momentum of the mixed gas, and the position dimensions can be easily managed. The mounting position of the rectifying plate can always be adjusted simply by attaching the lid to the vaporizer. It can be the same position.

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 portion 4 formed perpendicular to the fuel injection nozzle 3 and the venturi portion 4 to form a vertical vaporization surface 8 and sprayed with fuel oil and primary combustion air. The portions to be formed are flat surfaces 9 for the purpose of uniform diffusion of the fuel oil, and further, horizontal beads 10 communicating with the side walls of the carburetor 1 are provided on both sides of the flat surfaces 9 below the flat surfaces 9 except directly below the flat surfaces 9. Also, below this horizontal bead 10, a chevron bead 11 having a portion corresponding to the flat surface 9 as a vertex is provided, and the fuel that is sulphated without being vaporized is once received to promote vaporization. .

  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 covering the whole except for the back surface of the carburetor 1, and includes a primary air supply hole 16 that communicates with the venturi section 4 and supplies primary combustion air, and an outer periphery of the lid body 5 and an outer periphery of the carburetor 1 below. A secondary air supply hole 18 for supplying secondary combustion air to the secondary air passage 17 is provided, and an air guide portion 19 for smoothly supplying air to the two supply holes 16 and 18 is provided.

  Reference numeral 20 denotes a tapered gas chamber which allows the mixed gas from the outlet 7 to flow in on the back side of the carburetor 1 and burns in the burner portion 21 in only one row at the upper end. It is covered with a box-shaped secondary air chamber 23 having a communication port 22 that communicates therewith, and a gap between the upper surface of the secondary air chamber 23 and the one row of burner portions 21 serves as a secondary air hole 24. Between the secondary air holes 24 and the burner portion 21 on both sides, a flame holding plate 25 for secondary air rectification is provided.

  Further, a flame hole 26 composed of a plurality of lateral slits is formed on the upper surface of the burner portion 21, and of these flame holes 26, a flame hole 26 facing a plurality of heat-absorbing fins 27 for heat back on the back of the vaporizer 1. Has a larger flame hole 28 than the others.

Reference numeral 29 denotes a triangular mountain-shaped drift plate provided near the entrance of the bottom of the gas chamber 20 and guides a part of the mixed gas flowing into the gas chamber 20 to the large flame hole 28 side.
Reference numeral 30 denotes a spark plug provided on the carburetor 1 side on the burner portion 21, and reference numeral 31 denotes a frame rod provided on the burner portion 21 on the opposite side of the spark plug 30.
A combustion chamber 32 includes the vaporizer 1 on one side and covers the gas chamber 20, the burner unit 21, and the secondary air chamber 23.

  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 (not shown) for supplying combustion air and an electromagnetic pump (not shown) for supplying fuel oil, the carburetor 1 receives fuel from the fuel injection nozzle 3 and the venturi section 4. Is supplied with primary combustion 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 20.

  Since the flow rate of the mixed gas flowing into the gas chamber 20 is suppressed by the rectifying plate 14, the gas chamber is tapered without being concentrated in the large flame hole 28 of the burner portion 21 near the outflow port 7. After being distributed to the opposite side in 20, it is uniformly discharged from all the flame holes 26 of the upper burner portion 21, is ignited by the discharge of the spark plug 30, and burns stably.

  On the other hand, simultaneously with the supply of the primary combustion air, the secondary combustion air supplied from the secondary air supply hole 18 passes through the secondary air passage 17 on the outer periphery of the carburetor 1 and enters the secondary air chamber 23 covering the gas chamber 20. In response to the heat from the gas chamber 20, the temperature rises and is discharged from the secondary air hole 24 formed by a gap between the upper surface of the gas chamber 20 and the burner portion 21, and is guided by the flame holding plates 25 on both sides to burn. It is supplied to the flame, and complete combustion with good combustion is performed, and the indoor heating is performed with this combustion heat.

  Therefore, the simple structure of providing the rectifying plate 14 in front of the inflow port 7 can surely prevent the deviation of the flame and unstable combustion, and always obtain uniform and stable combustion over the entire flame hole. It is possible to maintain good combustion for a long time without occurrence of soot and flashback.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of the vaporization type oil combustion apparatus which shows one Embodiment of this invention. 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 Vaporizing heater 3 Fuel injection nozzle 4 Venturi part 7 Outlet 8 Vertical vaporization surface 14 Current plate 20 Gas chamber 21 Burner part

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 A fuel injection nozzle for spraying fuel from one side facing the gas and a venturi section for supplying combustion air, before the outlet of the mixed gas, the mixed gas flowing into the gas chamber A rectifying plate that rectifies while suppressing flow rate is provided. The rectifying plate protrudes in a U-shape from a lid provided with a fuel injection nozzle and a venturi part, and is mixed with upper and lower rectifying plates for projecting the rectifying plate . It is characterized in that the gas collides, the flow velocity is suppressed, turbulence occurs, further mixing is promoted, and finally it flows around the rectifying plate and flows into the gas chamber from the outlet. Vaporizing oil combustion equipment.

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