JPS5937523Y2 - kerosene combustor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a kerosene combustor that gasifies and burns kerosene using a heating mechanism.

Currently, there are mainly three types of energy sources used for household heat sources: electricity, gas, and kerosene, but energy sources for cooking heat sources in particular include propane gas, LP gas,
Gas such as city gas is most commonly used.

The reason for this is that electricity is the best from the standpoint of usability and safety, but it has the highest energy cost.Also, from the standpoint of energy cost, kerosene is the best, but if it is not completely combusted, it produces smoke and soot odors. There are problems such as gas being unsuitable for cooking, etc. From a cost standpoint, gas costs about 60% of electricity, and from a usability standpoint, compared to electricity. This is probably because it is so high that it is almost comparable.

For these reasons, recently, kerosene combustors have been commercially available that increase usability by gasifying and burning kerosene, which has the lowest energy cost, but there is still no perfect product. In particular, there are problems such as unburned gas leaking out and producing odor when extinguishing, and a considerable amount of time required to raise the temperature of the gasification chamber to a predetermined temperature when igniting.

The cause of such a problem is that the kerosene heating method in the gasification chamber is a direct heating method, so the rate of temperature rise and temperature drop of the kerosene heating section is slow.

The purpose of this invention was to directly heat the kerosene in the gasification chamber, thereby increasing the initial temperature rise characteristics of the kerosene gasification mechanism and improving the temperature drop characteristics during extinguishing, making it possible to improve It is an object of the present invention to provide a kerosene combustor that is as easy to use as the kerosene combustor.

Hereinafter, embodiments of this invention will be described based on the drawings.

FIG. 1 is a diagram schematically showing a kerosene gasification combustor that gasifies and burns kerosene. A tracheal flow rate adjustment valve 5 and the like are installed, and the kerosene whose oil level has been adjusted by the oil level regulator 2 is gasified as described later by air that is pumped by an air pressure feeder 4 through an intake air dust remover 3. It is sprayed into the gasification chamber 6 of the mechanism, heated and gasified by the gasification heater 1, and combusted by the burner 8.

Next, the gasification mechanism, which is the main part of this invention, will be explained based on FIG. 2.

The gasification chamber 6 is made of a material with excellent heat resistance, heat insulation, and electrical insulation properties, such as quartz glass or ceramic, and is formed into a cylindrical shape.

The tip of the air pipe 9 and the tip of the oil pipe 10 protrude into the gasification chamber approximately on the axis thereof, and the high pressure air blown out from the opening of the air pipe 9 moves the tip of the oil pipe 10 from the opening. Kerosene is sprayed in the axial direction of the gasification chamber due to the Venturi effect.Then, this sprayed kerosene is sprayed onto the inner wall of the gasification chamber 6, or a gasification heater provided at a position away from the inner wall surface. 1, it is instantaneously heated to a temperature higher than the boiling point and gasified, mixed with air in the gasification chamber 6, and then ejected into the burner 8 through the evolution prevention nozzle 11 at a speed higher than the combustion speed. , ignites and burns.

Next, a specific example of the gasification heater, which is the main part of this invention, will be explained.

The heating rate of the heater wire itself is inversely proportional to the diameter of the warped wire, so in order to set the time required to raise the temperature to the temperature required to gasify atomized kerosene to, for example, 1 to 2 seconds, The diameter of the heater wire used is 0.23 mm.

For example, when an iron-chromium heater wire with a wire diameter of 0.23 mm is wound into a coil with a diameter of 1.27 rran, it is further wound into a coil with a diameter of 12.5 walls to form a double coil. The time required for initial temperature rise was 1 to 2 seconds.

Further, when an iron-chromium heater wire with a wire diameter of 0.3 mm was formed into a double coil in the same manner as in the above case, the time required for initial temperature rise was less than 5 seconds.

Then, in the double coil type heater formed in this way,
In order to prevent heating wires from becoming brittle due to the influence of kerosene, surface treatments such as ceramic spraying or heat-resistant hollow treatment are performed to prevent direct contact between heating wires and kerosene.

The gasification heater 6 formed in this way has an inner diameter of 15 f.
It is installed in the gasification chamber 7 made of a quartz glass tube with Mt and a length of 100 mm so as not to come into direct contact with its inner wall surface.

The volume of this gasification chamber 7 is only 17.7c.
4, so the unburned gas of kerosene remaining when the fire is extinguished is approximately 1
．． The concentration is about 61CfA, and if this amount is diffused into a so-called four and a half tatami room with a height of 3.5rrl to the ceiling and a length and width of 2.7m, the concentration will be 0.0
The concentration was only about 77 ppm, and no strange odor was felt at all.

Furthermore, even if the diffusion range is limited to a 30 cm cube near the combustor,
Since its concentration is only about 60 ppm, there is no discomfort.

And when the volume of this gasification chamber exceeds 150c4,
Since the heating energy density becomes too small, gasification of kerosene becomes incomplete, and 4cri1. Below this, the flow rate of kerosene mist in the gasification chamber will be too high and gasification will become unstable.

In addition, corrosion resistance and earthquake resistance can be improved by bonding a resistance wire made of a highly corrosion-resistant resistance material into the ceramic five-vibrator that forms the gasification chamber, or by forming a gasification heater using printed wiring technology. However, on the other hand, since the heat is dissipated by being transmitted through the wall surface of the gasification chamber, the initial temperature rise is slightly lower than in the case described above.

Furthermore, if the heater is formed by applying a positive temperature coefficient thermistor material to the circumferential surface of the gasification chamber, it becomes possible to form a gasification heater with excellent corrosion resistance and initial temperature rise characteristics.

In order to obtain the same level of thermal power as a city gas stove, it is necessary to burn 65η of oil per second.
For this purpose, if power of about 150W (assuming gasification efficiency is 80%) is supplied to the gasification heater according to this invention mentioned above, it will be possible to gasify kerosene in about 1 to 2 seconds. Although it is necessary to supply about 20W of electricity to the blower, the energy cost is still only about half that of propane gas or city gas.

Also, if the time required for gasification is about 3 minutes, 50
It is also possible to use about W.

As mentioned above, the kerosene combustor of this invention has the same thermal power and usability as a city gas stove, but the energy cost is only about half that of city gas, LP gas, propane gas, etc. It can provide an excellent home heat source without the risk of poisoning or explosion like city gas.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of the kerosene combustor of this invention;
The figure is a sectional view showing the structure of a gasification chamber and a gasification heater, which are the main parts of this invention. 1... Kerosene combustor, 2... Oil level regulator, 3... Intake air dust remover, 4... Air pressure feeder, 5... ... Auxiliary air pipe flow rate adjustment valve, 6
...Gasification chamber, 7 ... Gasification heater, 8 ... Burner, 9 ... Air pipe. 10...Oil pipe, 11...Flashback prevention nozzle.

Claims (4)

[Scope of utility model registration request] (1) Inside the cylindrical gasification chamber, a kerosene atomizing nozzle is arranged coaxially with the axial direction of the gasification chamber, and a gasification heater that generates heat using electrical energy is arranged, and the kerosene A kerosene combustor that gasifies and burns gas, wherein the gasification heater is installed without contacting the inner wall surface of the gasification chamber to increase the rate of temperature rise of the heater itself. . (2) Scope of Utility Model Registration Claims Paragraph 1 provides a kerosene combustor according to IF, characterized in that the gasification chamber is made of a material with excellent heat resistance, heat insulation, and electrical insulation properties, such as quartz glass. combustor. (3) Scope of Utility Model Registration The kerosene combustor described in claim 1 is characterized in that a heating wire whose surface has been subjected to ceramic spraying or heat-resistant enameling treatment is used as the gasification heater. Kerosene burner. (4) Utility Model Registration A kerosene combustor according to claim 1, characterized in that a positive temperature coefficient thermistor is used as a gasification heater.