JP4598092B2 - Combustion part of heating system - Google Patents

Description

  The present invention relates to a vaporization type combustion part that constitutes a combustion part of a heating device.

Conventionally, this type of apparatus has been provided with a radiation window on the front surface of the appliance body to confirm the combustion flame and to obtain heat radiation and radiation from here to improve the heating effect. (For example, refer to Patent Document 1.)
Japanese Patent No. 3398118

  By the way, in this conventional one, a bead type burner is used to vaporize fuel oil at the bottom of the pot and simultaneously supply primary combustion air and secondary combustion air in stages and burn it with a red flame. Since the red hot state of the spark plug and frame rod is not projected vertically due to the glass and it is not noticeable by the red flame, there was no problem in installing it at any position, but recently the combustion part has been vaporized and the fuel oil has been vaporized If the mixed gas premixed with the primary combustion air is burned while receiving the supply of the secondary combustion air, the flame is blue, so the red hot state of the spark plug and frame rod appears vertically on the bead glass. It has the problem that.

  The present invention pays attention to this point and solves the above-mentioned drawbacks. In particular, the structure is provided with one to several rows of burner portions that are horizontally long and into which premixed gas is introduced from one side end. A rectangular radiant window is provided on the front of the instrument body, and the radiant window is provided with a heat-resistant bead glass having a continuous long bead protruding from the front side. A spark plug is provided at the fuel inflow side end of the burner portion, and a frame rod is provided at the opposite end.

  According to the present invention, the premixed gas inflow side end portion of the burner portion, which is the left and right ends of the radiant window where the red streaks appear as red streaks on the bead glass of the radiation window as red streaks. By providing a spark plug on the opposite end and a frame rod on the opposite end, only the blue flame looks beautiful and looks great with radiation, and the premixed gas inflow end of the burner section By providing a spark plug, the gas can be ignited with the first inflowing gas and transferred sequentially to obtain good ignition performance, and a flame rod is provided at the burner final end of the opposite end. By being provided, flame detection is performed with the flame that is ignited last, and reliable flame detection is always performed and can be used with peace of mind, that is, preventing red stripes from appearing in blue flames. Due to ignitability It is intended that was able to be combined to improve and a reliable flame detection.

Next, an embodiment of the present invention will be described based on the illustrated heating apparatus.
1 is an appliance body of a heating apparatus that performs heating by emitting far-infrared rays together with warm air. Far-infrared rays are generated by applying a far-red paint on the surface of the upper portion of the appliance body 1 and combustion gas flowing inside. A heat dissipator 2 for dissipating heat is provided. A lower part of the heat dissipator 2 includes a decorative frame 3 that covers the front of a combustion chamber, which will be described later. Further, a guard body 4 is positioned on the front of the heat dissipator 2 and the decorative frame 3, A display unit 5 for displaying various operating states is provided on the upper front surface, and an operation unit 6 including various operation buttons is provided on the upper surface.

  7 is a combustion chamber that is provided in the lower part of the radiator 2 and supplies combustion gas to the radiator 2, and has a flame hole portion 8 composed of a plurality of transversely cut flame holes in the inner lower part, and fuel oil, vaporized gas, A burner unit 9 for burning a premixed gas with primary combustion air is provided, and a square radiation window 10 for exposing the blue flame of the burner unit 9 is formed at the front center of the combustion chamber 7. The window 10 is provided with a heat-resistant bead glass 11 having a plurality of horizontally long beads on the front side, and an opening 12 for exposing the radiation window 10 is formed in the decorative frame 3.

  Reference numeral 13 denotes a vertically long box type carburetor made of aluminum die cast in which a U-shaped vaporizing heater 14 is cast on a side wall portion, and is provided through one side wall of the combustion chamber 7. Further, a mixed gas outlet 19 is formed in a lower portion which is closed by a lid body 17 having a venturi portion 16 which is a jet outlet for primary air for combustion, and is partitioned by a partition wall 18 projecting to the center.

  The carburetor 13 has an inner surface facing the fuel injection nozzle 15 and the venturi portion 16 formed perpendicular to the fuel injection nozzle 15 and the venturi portion 16 to form a vertical vaporization surface 20 and sprayed with fuel oil and primary combustion air. The portions to be formed are flat surfaces 21 for the purpose of uniform diffusion of the fuel oil, and further, horizontal beads 22 communicating with the side walls of the carburetor 13 are formed on both sides of the flat surfaces 21 except directly below the flat surfaces 21. Also, below this horizontal bead 22, a chevron bead 23 having a portion corresponding to the flat surface 21 as a vertex is provided, and the fuel oil that is sulphated without being vaporized is received once to promote vaporization. .

  Further, a horizontal plate 24 protruding from the lid 17 toward the vertical vaporization surface 20 is provided between the venturi portion 16 and the partition wall 18, and the vertical vaporization surface 20 and the lid 17 are separated by the partition wall 18. A meandering path 25 is formed between them, and a rectifying plate 26 protruding in a U-shape from the lid 17 is provided in front of the outlet 19, and mixing is promoted through the meandering path 25. The mixed gas once hits the rectifying plate 26 to suppress the momentum, and flows to the outlet 19 while being rectified.

  27 is a cover body covering the whole except for the back surface of the carburetor 13, and is composed of a primary air supply hole 28 that communicates with the venturi portion 16 and supplies primary combustion air, and an outer periphery of the lid body 17 and an outer periphery of the carburetor 13. A secondary air supply hole 30 for supplying secondary combustion air to the secondary air passage 29, and an air guide portion 31 for smoothly supplying air to the two supply holes 28, 30 is provided on the blowing side of the combustion fan 32. Is provided.

  Reference numeral 33 denotes a tapered gas chamber on the back side of the vaporizer 13 where the mixed gas from the outlet 19 flows in from the inlet 34 on one side and burns in the burner section 9 in only one upper end. Is covered with a box-shaped secondary air chamber 36 in which a communication port 35 communicating with the secondary air passage 29 is formed. Further, a gap between the upper surface of the secondary air chamber 36 and the one row of burner portions 9 is formed. In addition to the secondary air hole 37, a flame holding plate 38 for secondary air rectification is provided between the secondary air hole 37 and the burner portion 9 on both sides.

In addition, the flame hole portion 8 on the upper surface of the burner portion 9 is opposed to the plurality of heat-absorbing fins 39 for heat back on the back surface of the vaporizer 13 and has a larger flame hole 40 than the others.
Reference numeral 41 denotes a triangular mountain-shaped drift plate provided near the entrance of the bottom of the gas chamber 33, and guides a part of the mixed gas flowing into the gas chamber 33 to the large flame hole 40 side.

An ignition plug 42 is provided on the flame hole portion 8 in the vicinity of the mixed gas inlet 34 of the burner portion 9, and discharges between the burner portion 9 to ignite the mixed gas discharged from the flame hole portion 8. Is.
A frame rod 43 is provided on the final flame hole 8 on the side opposite to the spark plug 42, and detects the presence or absence of a flame by utilizing the conductive action of the flame.

  In addition, the rectangular radiation window 10 in front of the combustion chamber 7 has a lower end slightly above the flame hole portion 8, and one end of each of the left and right ends is a position where the ignition plug 42 in the vicinity of the mixed gas inlet 34 of the burner portion 9 is hidden. The other end is a position where the frame rod 43 provided on the opposite final flame hole 8 is barely hidden, and during this time, the blue flame of vaporization combustion is projected on the entire bead glass 11.

Furthermore, a wide and long tongue piece 44 is provided at both ends of the flame holding plate 38, and the heat absorbing fin 39 heated by the large flame 40 is cooled by the secondary combustion air under the heat absorbing fin 39. On the opposite side, the flame detected by the frame rod 43 is prevented from being burnt by receiving the supply of secondary combustion air and being unable to detect the flame.
45 is an electromagnetic pump for supplying fuel to the fuel injection nozzle 15, and 46 is a constant oil level device for storing a certain amount of fuel.

  Next, the operation of this embodiment will be described. When the vaporization heater 14 is energized and the vaporizer 13 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 the combustion fan 32 for supplying combustion air and the electromagnetic pump 45 for supplying fuel oil, fuel oil is supplied from the fuel injection nozzle 15 to the carburetor 13 and primary combustion air is supplied from the venturi section 16. Is done.

  In the vaporizer 13, the fuel injected from the fuel injection nozzle 15 collides with the flat surface 21 of the vertical vaporization surface 20 to vaporize and become vaporized gas, and the fuel that has not been vaporized here is horizontal. The gas flows into the bead 22 and the bead 23 and is vaporized, and is premixed with the primary combustion air supplied from the venturi section 16 to become a mixed gas and circulates toward the lower outlet 19. First, the mixture passes through a meandering path 25 formed by the partition wall 18 and the horizontal plate 24, passes through two bends in a long flow path, and mixing is promoted. Further, it collides with the rectifying plate 26 before the outlet 19. Further, the flow straightening plate 26 collides with the upper and lower support plates for projecting from the lid body 17, the flow velocity is suppressed, turbulence occurs, further mixing is promoted, and finally the flow straightening plate. Around 26 It is intended to flow into the gas chamber 33 from the inlet port 34 and.

  Since the flow rate of the mixed gas flowing into the gas chamber 33 is suppressed by the rectifying plate 26, the gas chamber is tapered without being concentrated in the large flame hole 40 of the burner portion 9 near the inlet 34. After flowing to the opposite side in 33, it is discharged uniformly from all the flame holes of the upper burner part 9, and is ignited by the discharge of the spark plug 42 and burns stably.

  During this combustion, the spark plug 42 and the frame rod 43 in which the red heat state is reflected as red streaks on the bead glass 11 of the radiation window 10 are hidden by the left and right ends of the radiation window 10 where the red streaks are not conspicuous. By providing a spark plug 42 at the end of the premixed gas inflow side and a frame rod 43 at the end of the other side, only the blue flame looks beautiful and looks very good with radiation. By providing the spark plug 42 at the inflow side end of the premixed gas of the burner unit 9, it is possible to obtain good ignition performance by igniting with the first inflowing gas and sequentially transferring the fire. Since the flame rod 43 is provided at the final end of the burner portion 9 on the opposite end, flame detection is performed with the flame that is ignited last, and reliable flame detection is always performed and can be used with peace of mind. That is, by preventing the reflected red streaks in blue flame, in which it could be obtained combining the improvement and reliable flame detection in ignition performance.

The perspective view of the heating apparatus which shows one Embodiment of this invention. The perspective view of the heating apparatus which the same part disassembled. The perspective view of the bead glass. Explanatory drawing of the combustion chamber. Explanatory drawing of the burner part. 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 Apparatus body 9 Burner part 10 Radiation window 11 Bead glass 42 Spark plug 43 Frame rod

Claims (1)

  It is horizontally long and is equipped with one to several burner sections into which premixed gas is introduced from one side end. A rectangular radiation window is provided on the front of the instrument body so that the blue flame of this burner section can be seen. Is provided with a heat-resistant bead glass with a horizontally long bead protruding from the front side, and a spark plug is provided at the fuel inflow side end of the burner portion which is the left and right ends of the radiation window, and the opposite end A combustion part of a heating device, wherein the part is provided with a frame rod.

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