JPS61276614A - Carbureter - Google Patents

Abstract

PURPOSE:To effectively accelerate the vaporization of oils by increasing contact areas between a bar-like heater and oil by providing an oil-inducing structure in such a way as to enable oil to be adhered over almost all periphery of the bar-like heater in the aperture between the heater and a tubular body. CONSTITUTION:An oil-inducting structure is formed by providing a linear woven cloth part 14, e.g., stainless steel wire mesh, heat-resistant glass wool cloth, carbon fiber cloth, ceramic fiber cloth, etc., around almost all the periphery of a bar-like heater 12 in the aperture between the heater 12 and a tubular body 11. Oil supplied from an oil supply port 11a permeates into the woven cloth part 14, reaches the whole areas by capillary phenomenon, and vaporized effectively. The temperature distribution of the heater 12 itself can be equalized and the durability of the heater 12 can be improved because its non-uniform thermal deformation can be avoided.

Description

[Detailed description of the invention] (Industrial application field) Taifa Tsui heats liquid fuel in a vaporization type combustor and vaporizes it.
This invention relates to a vaporizer that supplies gas as fuel.

(Prior Art) Conventionally, as a vaporizer that vaporizes liquid fuel and supplies it as gas fuel, a rod-shaped ceramic heater S2 is installed in a tubular body 51 as shown in FIG. 5(1) and FIG. 5(b). A liquid fuel F such as light oil is supplied from the lower part of the tubular body 51, heated and vaporized by the rod-shaped ceramic heater 52, and the vaporized gas fuel is discharged from the opening at the upper end. Are known. Rod-shaped ceramic heater 5
2 is below. The gap s3 between the rod-shaped ceramic heater 52 and the tubular body AX is configured to be relatively large in order to increase the vaporization capacity.

(Problems to be solved by the invention) However, in the conventional vaporizer as described above,
The liquid fuel evaporates and boils near the inlet, and is not vaporized by the entire ceramic heater.As a result, the contact area of the effective heating part that actually contributes becomes small, resulting in poor vaporization efficiency. . In other words, to summarize.

l) Liquid fuel accumulates at the inlet and the contact area of the heating part is small, resulting in poor vaporization efficiency.

2) The base of the ceramic heater is heated due to heating and has a low temperature (approximately 200°C), while the tip does not contribute to heating as explained in 1) and is high in temperature (approximately 900°C). ), which is unfavorable in terms of durability due to non-uniform deformation due to this temperature difference.

3) When the tip reaches SOO°C in the state of 2), men begin to adhere to the tip.

;4) Since the contact area with the liquid fuel is small, even if an attempt is made to increase the amount of vaporization by increasing the calorific value, it will be subject to restrictions due to 3).

It had performance problems.

(Object of the Invention) Invention #i, which has been developed in consideration of the problems of the prior art described above, is the invention in which oil adheres to the gap between the rod-shaped heater and the hemp over almost the entire circumference of the rod-shaped heater. By providing an oil-conducting structure to increase the contact area of the rod-shaped heater with oil and efficiently promote oil vaporization, it also equalizes the temperature distribution of the rod-shaped heater, improves durability, and improves vaporization. The purpose of the present invention is to provide a vaporizer that can flexibly respond to increases in capacity.

(Means for solving the problem) An uninvented means for achieving the above object is that a rod-shaped heater is inserted into a tubular body, and oil is supplied from one side of the tubular body, and the rod-shaped heater The oil is heated and vaporized, and the vaporized gas is discharged from the other side of the tubular body, so that the oil adheres to the gap between the rod-shaped heater and the tubular body over substantially the entire circumference of the rod-shaped heater. It is a vaporizer characterized by having an oil conduction side structure.

(Function) The oil is diffused and supplied over almost the entire circumference of the rod-shaped heater due to the capillary action of the oil guide side structure, so that the vaporization of the oil is promoted and the vaporization efficiency is improved.

At the same time, the temperature distribution of the rod-shaped ceramic heater is evened out over the entire circumference of the heater, without the temperature distribution becoming uneven between areas where oil is attached and areas where oil is not attached. It is also possible to increase the amount of vaporization by increasing the power supply by the amount that the temperature at the upper end is lowered, and the durability of the vaporizer is further improved.

(Example) Hereinafter, an example of an uninvented vaporizer will be described in detail with reference to the drawings.

[First embodiment] As shown in Fig. 1 (,) and gISI diagram (b), the wood-based vaporizer l has a cross section made of a ceramic material with excellent heat resistance such as nitrogen (I). At the center of the annular tubular body 11,
A rod 12 with a zero rectangular cross section made of a heat-resistant ceramic material in which a heating element W such as tungsten is embedded is inserted, and an oil supply port IIs integrally formed in the lower part of this tubular body 11 is inserted. When liquid fuel oil F such as light oil is supplied, this oil is heated and vaporized by the heat generated by the rod-shaped heater 12, and the vaporized gas is discharged from the upper discharge port 11b of the tubular body 12. In the gap with the tubular body 11), a heat-resistant glass cool cloth is wrapped with a woven member 14 of a linear body such as Bonfiber cloth or ceramic fiber cloth to form an oil guide side structure. are doing. The lower end of the tubular body 11 is integrally sealed in a liquid-tight manner by a terminal 15 that supplies power to a heating element within the rod-shaped heater 12. The oil supplied from the oil supply port 11a penetrates into the woven member 14 and is distributed throughout by capillary action), and receives heat from the entire rod-shaped and tank 12 to be efficiently vaporized. As for the heater 12 itself, as shown in FIG. 4, the temperature distribution is leveled, uneven thermal deformation is avoided and durability is improved, and at the same time there is room for temperature rise to increase the amount of vaporization. becomes possible.

[Second Example] As shown in FIG. 2, an unimplemented vaporizer 2Fi, a porous oil adsorbent 24 made of cordierite as an oil guiding structure
The oil adsorbent 24 is attached to the inner peripheral surface of the tubular body 11 in close contact with the rod-shaped heater 12 with a gap of about 0.5 fl. The porous sintered crystal of dilite had a large number of communicating holes of 100 to 200.1; as shown in Figure 1, it is made by extrusion molding into a tubular shape with a rectangular hollowed-out cross-sectional shape and extrusion molding. The gap between the rod-shaped heater 12 and the cordierite backing oil adsorbent 24 is 1
The oil is spread over the entire outer peripheral surface of the rod-shaped heater 12 by capillary action to promote heating and vaporization. Furthermore, the porous oil adsorbent 24 is heated by the rod-shaped heater 12 to promote vaporization of oil within its many pores, thereby improving vaporization efficiency.

Tubular body 11 forming the base of the vaporizer 20. Since the rod-shaped heater 12 and the terminal 15 are made of the same material and have the same structure as those of the first embodiment, the same drawing number is used.

[@3 Embodiment] As shown in FIG. 3, the unembodied carburetor 3 uses an oil sleeve 34 that is integrated with the tubular body as an oil guiding structure, and extends from the rod-shaped heater 12 to its entire circumference. We will discuss it by attaching it so as to form a uniform minute gap. The unimplemented example has a simple structure in which oil is transferred to the rod-shaped heater 12 by capillary action.
The gas is raised to the upper part of the gas and heated through uniform heat transfer to efficiently promote vaporization.

Furthermore, in each embodiment, it is also possible to make the temperature distribution even more uniform by adjusting the bending density of the tank stainless steel heating element W in the rod-shaped heater 12.

(Effects of the Invention) As described above, according to the vaporizer of the present invention, oil-A is formed in the gap between the rod-shaped heater and the tubular body over substantially the entire circumference of the rod-shaped heater.
Since the oil guiding structure is provided so that the oil adheres to the rod-shaped heater, the supplied oil is diffused around the entire circumference of the rod-shaped heater, efficiently receiving heat, and promoting vaporization. The temperature distribution of the rod-shaped heater is also made uniform, the durability is improved, and since there is room for temperature rise, it is possible to enjoy great effects such as being able to flexibly respond to an increase in vaporization capacity.

[Brief explanation of drawings]

FIG. 1(,) is a partially cutaway longitudinal cross-sectional view showing a 4!11 embodiment of the carburetor of the present invention, and FIG. 1(b) is a cross-sectional view taken along line Ib-Ib in FIG. 1(,). Figure 2 IIi is a cross-sectional view of the carburetor showing the second embodiment, the third factor is a cross-sectional view of the carburetor showing the third embodiment, and Figure 4 is the temperature distribution of the rod-shaped heater of the present invention and the conventional carburetor. 5(a) is a partially cutaway vertical sectional view of a conventional carburetor, and FIG. 5(b) is a sectional view taken along the line vb-vb in FIG. 5(a). (Explanation of symbols) 1.2.3... Vaporizer of the present invention, 11... Tubular weight 12
...Rod-shaped heater, 13--Gap between tubular body and part of rod-shaped body, 14-.Oil guide structure. one or more one

Claims (6)

[Claims] (1) A rod-shaped heater is inserted into a tubular body provided with an oil supply port and a vaporized gas discharge port, and an oil guide structure is interposed between the outer periphery of the heater and the inner wall surface of the tubular body. A vaporizer featuring: (2) The carburetor according to claim 1, wherein the oil guiding structure is an oil sleeve. (3) The vaporizer according to claim 1, wherein the oil guiding structure is a porous oil adsorbent. (4) The vaporizer according to claim 1, wherein the oil guiding structure is woven from a plurality of linear bodies. (5) The carburetor according to claim 1, wherein a porous oil adsorbent is fitted into a tubular body around the rod-shaped heater via an oil sleeve. (6) The vaporizer according to claim 3 or 5, wherein the porous oil adsorbent is cordierite.