JPS621532Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oil vaporization burner for premix combustion in which a vaporization casing is provided upstream of the burner to prevaporize and mix air and atomized liquid fuel such as petroleum. The purpose of this is to shorten the preheating time and ignite the fuel.

Generally, a burner constructed by removably fitting a burner cap onto a burner body has a group of teeth forming a flame opening located between the burner cap and the burner body, and this group of teeth is formed on the burner cap.

That is, a conventional oil vaporizing burner has a structure as shown in FIGS. 1 and 2.

FIG. 1 is a schematic sectional view of a conventional oil vaporizing burner, and FIG. 2 is a view of the burner cap viewed from direction A in FIG.

In FIGS. 1 and 2, 1 is a burner body, 2 is a vaporized fuel discharge pipe, 3 is a mixing pipe, 4 is a heater provided thermally in the burner body 1, and 6 is a burner cap. The burner cap 6, which is removably fitted to the burner body 1, has a tapered surface 7 facing the inclined surface 5 of the burner body 1, and a tooth profile group 9 formed with a plurality of recesses 8 parallel to the tapered surface 7. A burner port 10 is formed between an inclined surface 5 of the burner body 1 and a burner cap 6 facing thereto.

By the way, petroleum gas fuel, which is obtained by vaporizing petroleum using a vaporizer, generally has very poor ignition performance compared to city gas, etc., and if the temperature of the petroleum vaporized gas blown out from the flame nozzle 10 is low, the fuel will be ejected from the flame nozzle 10. However, in the above-mentioned vaporizing burner, the flame nozzle 10
Since the tooth profile group 9 forming the burner cap 6 is provided integrally with the burner cap 6, 3/4 of the burner mouth edge surface is formed on the burner cap 6 side, which is separate from the burner body provided with the heater 11. Moreover, since the contact area between the burner body 1 and the burner cap 6 is very small, and the two are constructed as separate bodies,
The heat passage resistance at the contact surface of the heater 11 was extremely large. Therefore, even if the burner body 1 is heated by the heater 11, although the heating rate of the burner body 1 is relatively fast, the heating rate of the burner cap 6 is slower than that of the burner body 1.
The temperature rise at the burner mouth 10 is slow and burner body 1
Even if the inside reaches a temperature that can be vaporized, the temperature at the flame nozzle does not reach that temperature, and the gas that has been vaporized at the flame nozzle (the part where vaporized gas is spouted) does not reach that temperature, especially in the early stage of ignition.
As it passed through the water, it was cooled and the temperature dropped, and some of it liquefied again, potentially making it impossible to ignite it. Therefore, in conventional oil vaporizing burners, it takes time for the flame port to reach a temperature at which ignition is possible, so the preheating time is extremely long.

The present invention was developed in view of the above points, and uses a vaporizer to convert petroleum into vaporized fuel, and in order to shorten the preheating time in an oil vaporizing burner that burns this vaporized fuel, a plurality of tooth profile groups are installed on the burner body side. A recessed portion is provided to further accelerate the temperature rise in this recessed portion.

An embodiment of the present invention will be described below based on the drawings.

FIG. 3 is a schematic sectional view of an oil vaporization burner using the burner of the present invention, and FIG. 4 is a side view of the burner body of FIG. 3.

In the figure, parts having the same functions as those in the conventional example are given the same numbers and their explanations will be omitted.

The burner port 10 includes a recess 8' formed on the upper circumferential surface of the burner body 1 and consisting of a plurality of tooth-shaped groups 9', and an inclined surface parallel to the tapered surface 7 of the burner cap 6, which faces the tapered surface 7' of the tooth-shaped groups 9'. It is formed by surface 5'.

Next, the operation up to ignition will be explained.

First, an operating circuit (not shown) energizes the heater 4 provided on the outer periphery of the burner body 1, and when the flame port 10 reaches a temperature at which it can be ignited, the operating circuit operates a vaporizer, etc. (not shown), and the oil, etc. The liquid fuel is atomized and the fuel mixed with air is supplied from the fuel supply port 2 of the burner body 1. Then, the fuel is transferred to the vaporizer casing 1 which is composed of the mixing flow regulating tube 3 disposed inside the burner body 1 and the outer circumferential wall 11 of the burner body 1.
2, the mixture is heated and mixed, flows from the surface into the mixing flow regulating cylinder 3, is regulated, and is ejected from the flame port 10 of the burner. Thereafter, the fuel is ignited by an ignition spark (not shown) to start combustion, but after normal combustion, the power supply to the heater 4 is automatically stopped.

Therefore, in the oil vaporizing burner according to the embodiment of the present invention, the tooth profile group 9' forming the flame opening is located on the burner body 1.
Since the heater provided in the burner body 1 heats the burner, the heat of the heater is immediately transmitted to the integrated tooth profile group 9', and this tooth profile group 9' is connected to the flame mouth edge. Since it occupies about 3/4 of the surface, the heating rate of the flame nozzle 9' can be increased compared to the conventional case, especially at the initial stage of ignition, and liquefaction at the flame nozzle portion at the early stage of ignition can be prevented.

As described above, according to the present invention, since the tooth profile group forming the burner port is provided on the burner body in which the heater is thermally disposed, the tooth profile group forming the burner port is provided in the burner cap, which is separate from the burner body. The heat of the heater can be transmitted to the tooth profile group more efficiently than in the case of Therefore, it is possible to shorten the preheating time for heating the flame nozzle formed by this group of teeth above a certain temperature, and it is possible to quickly raise the temperature of the flame nozzle in particular at the initial stage of ignition. It is possible to provide an oil vaporization burner that has excellent ignitability without causing the liquid fuel heated and vaporized by a heater at the initial stage of ignition to cool down and liquefy again as soon as it reaches the flame opening. can.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of a conventional oil vaporizing burner; Fig. 2 is a view taken in the direction of arrow A in Fig. 1;
The figure is a schematic sectional view of an oil vaporizing burner showing an embodiment of the present invention, and FIG. 4 is a side view of the burner body shown in FIG. 3, in which 1 is the burner body, 6 is a burner cap, 9
9' is a tooth profile group, and 10 is a flame opening.

Claims (1)

[Scope of Claim for Utility Model Registration] In a vaporizing burner consisting of a burner body for supplying liquid fuel, a heater thermally disposed on the burner body, and a burner cap detachably fitted on the burner body. , An oil vaporizing burner characterized in that the burner body is integrally provided with a group of teeth forming a flame opening.