JPS6026258Y2 - Vaporizer for vaporizing oil combustion equipment - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a vaporizing oil combustion device.

For this type of combustion device, it takes time from turning on the input switch until the burner is ignited; in other words, after turning on the switch and energizing the heater, it cannot be ignited until the vaporizer heats up to the set temperature. There is a big weakness here.

Therefore, much research and development has been carried out to shorten the waiting time from turning on the switch to ignition.

However, the reality is that even with current combustion devices, it takes a long time of 5 to 6 minutes.

Therefore, this idea provides a vaporizer for a vaporization type oil combustion device that can solve the above-mentioned weaknesses of this type of combustion device. A sealed cylindrical electric heating tube is fitted onto the outside, and a vaporizing tube formed by forming a sealed double structure into a cylindrical shape is fitted onto the electric heating tube, and the outer circumferential surface of the electric heating tube and the inner circumferential surface of the vaporizing tube are bonded together. A device characterized by enhancing the shape of the agent layer, filler layer, or coating agent layer, increasing the surface area relative to the internal volume of the vaporizing tube, and further increasing the thermal conductivity of the electric heating tube and vaporizing tube. It is.

That is, the structure and operation of this invention will be explained in detail with reference to the embodiments of the drawings as follows.

The carburetor a is integrated with a vaporized fuel injector, and is a cylindrical cylinder in which a heater 4 is enclosed in an insulating material 5 such as ceramic in an inner tube 3 equipped with a valve rod 2 for opening and closing a spout 1 at the tip. A shaped electric heating tube 6 is fitted onto the outside of the electric heating tube 6, and a vaporizing tube 8, which has a sealed double structure and has a cylindrical shape and stores a metallic filler 7, is fitted onto the outside of the electric heating tube 6. A layer 9 of a heat-resistant inorganic adhesive, a filler, or a coating material whose main component is the same material as the insulating material 5 is formed on the outer circumferential surface and the inner circumferential surface of the vaporizing tube 8. The distal end of the inner pipe 3 is connected by a pipe 10 for sending vaporized fuel, and the base end of the outer peripheral surface of the vaporizing pipe 8 is connected to a pipe 12 for sending liquid fuel, which communicates with the oil pump 11.
A movable piece 13 is provided at the base end of the valve rod 2, and a solenoid 14 is energized behind the movable piece 13.
In the figure, 17 is a needle valve at the tip of the valve rod 2, 18 is a mixing tube, 19 is an opening of the mixing tube 18, and 20 is an opening of the mixing tube 18. burner,
21 is a spark plug.

When an input switch (not shown) is turned on, the heater 4 is energized to heat the vaporizing tube 8 and the inner tube 3 to raise their temperature.

After a so-called waiting time, when the appropriate temperature is reached, the oil feed pump 11 is activated by the action of a thermistor (not shown) attached to the vaporizer pipe 8, and the liquid fuel passes through the feed pipe 12 and is delivered to the base of the vaporizer pipe 8. injected into.

At the same time, the solenoid 14 is energized and the suction piece 15 attracts the movable piece 13 and the valve rod 2 against the pressing force of the spring 16, so that the needle valve 17 separates from the valve seat 22 and the spout opens.

Therefore, the liquid fuel injected into the base side of the vaporization pipe 8 passes through the metal filler 7 in the vaporization pipe 8 and gradually rises in temperature while reaching the tip of the vaporization pipe 8 and becomes completely vaporized, and is then transferred to the feed pipe. 10, it is injected into the tip of the inner tube 3 heated by the electric heating tube 8, and is injected from the waist spout 1 into the opening 19 of the mixing tube 18. At the same time, primary air is sucked in and mixed with vaporized fuel, which is then heated to the burner 2.
It is sent to zero and burned.

As described above, in this invention, a vaporizing tube 8 made of a sealed double structure is fitted onto a cylindrical heating tube 6 in which a heater 4 is enclosed in an insulating material 5 such as ceramic, and the outer periphery of the heating tube 6 is further fitted. Since a layer 9 of adhesive, filler, or coating material whose main component is the same material as the material of the insulating material 5 is formed on the surface and the inner peripheral surface of the vaporizing tube 8, almost the entire electric heating tube is covered with the vaporizing tube 8. Since the layer 9 is formed over the entire large contact area, the outer circumferential surface of the electric heating tube 6 and the inner circumferential surface of the inner tube 8a of the vaporizing tube 8 are in close contact with each other, so that they are tightly connected. Since they are in an integrated state, the thermal conductivity from the heater 4 to the vaporizing tube 8 is extremely high.

At the same time, since the layer 9 is mainly composed of a material of the same series as the insulating material 5, the thermal expansion thereof is also the same, resulting in even better heat conduction.

Furthermore, since the vaporizer tube 8 is a sealed double structure formed into a cylindrical shape, the surface area is large compared to the small content, and the liquid fuel injected into the vaporizer tube 8 is heated over the entire surface. This results in rapid vaporization.

Also, at the same time as the heater 4 is energized, the inner tube 3 is heated by the electric heating tube 6.
Since the fuel vaporized in the vaporizing tube 8 passes through the heated tip of the inner tube 3 and is immediately jetted into the mixing tube 18 without being cooled, excellent complete combustion can be expected.

Furthermore, at the same time as the heater 4 is energized, heat is directly transmitted from the insulating material 5 such as ceramic to the layer 9 and from the layer 9 to the inner tube 8a of the vaporizing tube 8 with high thermal conductivity, and there is a gap that prevents this conduction. It is more effective because it does not have any.

Now, the vaporizing tube 8, which is made of a sealed double structure formed into a cylindrical shape, is fitted onto the heating tube 6 through a layer 9 whose main component is a material of the same type as the insulating material 5, as described above. The high thermal conductivity that is achieved through integration, etc., is such that the waiting time, which conventionally required 5 to 6 minutes, is shortened to 30 seconds, significantly increasing the commercial value of vaporizing oil combustion equipment. At the same time, it can be done with a small power of 220W, contributing to energy saving and has a great practical effect.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a partially cutaway front view of an oil combustion device, FIGS. 2 and 3 are a longitudinal sectional front view of a carburetor, and FIG. 4 is a longitudinal sectional side view of the same. 1... spout, 2... valve rod, 3...
...Inner tube, 4...Heater, 5...
Insulating material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical electric heating tube with a heater sealed in an insulating material is fitted onto the inner tube that houses a valve rod for opening and closing the spout at the tip, and a sealed double structure is attached to this electric heating tube. A vaporizing oil combustion device characterized in that a vaporizing tube formed into a cylindrical shape is fitted onto the outside, and a layer of adhesive or filler is applied to the outer circumferential surface of the electric heating tube and the inner circumferential surface of the vaporizing tube. vaporizer. 2. A vaporizer for a vaporizing oil combustion device as set forth in claim 1 of the utility model registration claim, characterized in that the layer is formed using an adhesive or filler whose main component is a material of the same type as the insulation material. .