JPS59142308A - Liquid fuel evaporating device - Google Patents

Abstract

PURPOSE:To make it possible to suppress the vapor lock and to attain stable evaporation without heating a kerosene feed pipe and kerosene which passes through the kerosene feed pipe by insulating heat from the kerosene feed pipe and an evaporator through a heat insulating material disposed therebetween. CONSTITUTION:Only a heating metal plate 4 is heated by supplying heat beforehand to an electric heater 3. On the other hand, a fuel 12 within a fuel tank 13 passes through the kerosene feed pipe 10 by the action of a kerosene feed pump 11, and is dropped on the heating metal plate 4 from a liquid dropping nozzle 14 and evaporated. Since no vapor lock is generated within the kerosene feed pipe 10, kerosene is continuously dropped and a stable evaporation combustion is obtained. Further, while the heat insulator 5 is interposed between the kerosene feed pipe 10 and the evaporator 1, even the heat insulator 5 of a low heat transfer factor may obtain the same effect.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vaporization method for a liquid fuel vaporization device, which continuously and stably heats and vaporizes liquid fuel in the film boiling temperature region. This relates to improvements to vaporizers for sustained use.

[Prior art]

FIG. 1 is a diagram illustrating a vaporizing combustion apparatus disclosed in, for example, Japanese Utility Model Application Publication No. 55-162724.

Figure 2 is a cross-sectional view of the vaporizer, where (2) shows the breathable substance;
(31 is an electric heater, u4 is an outer wall cylinder, (4) is an inner wall cylinder, and 0 is a fuel oil pipe.

A conventional vaporizer is constructed as described above.

Using kerosene as an example of liquid fuel, kerosene is injected into the vaporization chamber through an oil pipe into the vaporization chamber, which is pre-adjusted to around 250 degrees Celsius using an electric heater, in order to vaporize the kerosene in as short a time as possible. There is.

In conventional heated vaporization type oil combustion equipment, the vaporization chamber is heated to film boiling temperature (290, -350℃) to suppress tar, but since the oil transfer pipe is in contact with the vaporization chamber, the oil transfer pipe does not reach film boiling temperature. heated to temperature. As a result, the kerosene passing through the oil pipe is heated, causing paper locks within the pipe, which poses a problem in that stable vaporization and combustion are inhibited.

[Summary of the invention]

This invention was made for the purpose of improving this drawback, and by insulating the oil pipe and the vaporizer with a heat insulating material, the kerosene passing through the oil pipe and the oil pipe can be heated without being heated.
This paper proposes a fuel vaporization device that can suppress paper lock and achieve stable vaporization.

[Embodiments of the invention]

FIG. 3 shows an embodiment of the invention. (1) is a vaporizer,
(2) is the vaporization chamber, (3) is the electric heater, (4) is the heating metal plate, (5) is the insulation material, (6) is the temperature adjustment sensor, (7) is part of the burner, (8) is vaporized gas discharge nozzle,
aω is an oil feed pipe, Q4) is a liquid fuel dripping nozzle, and the vaporization device is constituted by these.

The details of the operation will be explained using FIG. 3 as an example of kerosene as the liquid fuel. By energizing the electric heater in advance, only the heating metal plate is heated. -Fuel α2 in 10,000 fuel tanks aJ
passes through the oil pipe aυ due to the operation of the oil pump a0,
The liquid fuel is dripped from the liquid fuel dripping nozzle 04 onto the heating metal plate (4) and vaporized. Since paper locks do not occur in the oil pipe, kerosene is dripped continuously and stable vaporization combustion can be achieved.

In addition, in the above embodiment, there is insulation between the oil pipe and the carburetor.
The same effect can be obtained by using a heat insulating material with a low transmittance.

By the way, in the above explanation, the present invention was described only for vaporizing kerosene, but it goes without saying that it can also be used for other liquid fuels.

〔Effect of the invention〕

As explained above, the present invention improves the structure of the liquid fuel feed pipe of the liquid fuel heating vaporization device, thereby making it possible to stably vaporize the liquid fuel by heating it.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a conventional liquid fuel combustion device. FIG. 2 is a cross-sectional view showing the vaporizer section of FIG. 1, and FIG. 3 is a cross-sectional view showing an embodiment of the present invention. 3) is an electric heater, (4) is a heating metal plate, (5) is a heat insulator,
(6) is a temperature adjustment sensor, (7) is a burner, (8
) is a nozzle. (9) is the burner population, υ is the oil pipe, (111 is the oil pump. (Iz is the fuel, (l is the fuel tank, (141 is the γ nozzle. This shows that. Agent Makoto Kuzuno − ¥ 1 (¥ 1 ′! + 2 Shame

Claims (1)

[Claims] Liquid fuel vapor is made by injecting liquid fuel onto a heated metal plate using heat from an electric heater, etc., and vaporizing and burning it.
1. A liquid fuel vaporization device characterized in that a heat insulating material is interposed between a liquid fuel oil supply pipe to a heated metal surface and a vaporizer.