JPH0979521A - Kerosine vaporizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a kerosine vaporizer which stably burns without pulsation and has small tar clogging. SOLUTION: The kerosine vaporizer comprises a vaporizer body 1 closed at one end by a cover 2, inserted fixedly from the other end with a heating element 3, having a vaporizing chamber 4 formed at a hollow part and a wick (filler) 8 provided in the chamber 4 to expedite the diffusion and vaporization of oil, a temperature detector 5 and a nozzle 6 communicating with the chamber 4 arranged at the fixed side of the element 3 of the body 1, an oil feed port 7 connected to the cover 2 side of the body 1, and a heat recovery heat receiving rod 9 provided between the nozzle 6 of the body 1 and the port 7. In this case, the body 1 is molded in a thin thickness between the port 7 and the rod 9, and formed in a thick thickness between the rod 9 and the nozzle 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kerosene vaporizer for a combustion apparatus in which kerosene is heated and vaporized, ejected from a nozzle and burned in a Bunsen burner.

[0002]

2. Description of the Related Art A conventional kerosene vaporizer is, for example, as disclosed in Japanese Utility Model Laid-Open No. 62-24221.

FIG. 4 is a sectional view showing an example of a conventional kerosene vaporizer. In the figure, reference numeral 1 denotes a substantially hollow cylindrical carburetor body, one end of the carburetor body 1 closing a lid 2 and the other. A heating element 3 is inserted and fixed from the end, a vaporization chamber 4 is formed in the hollow portion, and a wick (filler) 8 that promotes diffusion and vaporization of oil is provided in the vaporization chamber 4.

A temperature detecting element 5 and a nozzle 6 communicating with the vaporization chamber 4 are provided on the side of the carburetor body 1 on which the heating element 3 is fixed, while an oil feed port is provided on the lid 2 side of the carburetor body 1. 7 is connected. Further, the nozzle 6 and the oil supply port 7 of the vaporizer body 1
A heat receiving rod for heat recovery is provided on the upper side of the carburetor body 1 between and.

When the operation of the kerosene vaporizer is started, the heating element 3 generates heat, and based on the detection of the temperature detecting element 5, energization is controlled so as to keep the wick 8 in the vaporization chamber 4 at a temperature necessary for vaporizing kerosene. At the same time, the pump 14 is operated to send kerosene to the vaporization chamber 4 via the oil feed port 7 and vaporize it via the wick 8. The vaporized kerosene gas is ejected from the nozzle 6 and burned by a burner (not shown).

[0006]

However, in the above-mentioned conventional kerosene vaporizer, the heat receiving rod 9 for recovering heat from the combustion flame is adjacent to the oil feed port 7, and a large amount of heat recovered by the heat receiving rod 9 is generated. Easily move to the vicinity of the oil supply port 7, the kerosene sent to the oil supply port 7 evaporates instantly at the outlet, and pulsating combustion due to breathing of refueling may occur especially at the time of minimum combustion, or when defective kerosene is used. Also, there was a drawback that the oil supply port 7 was clogged with tar during long-term use.

In order to remove tar, for example, the actual development 6
No. 0-165631, which emphasizes the ease of replacement of the wick, and as shown in Japanese Utility Model Laid-Open No. 3-56023, two layers of a wick for vaporizing kerosene and a wick for transporting kerosene, and tar adhesion. Although there are some things that can increase the clogging time due to, there was not much effect in preventing tar clogging. Further, as shown in Japanese Utility Model Laid-Open No. 3-112622, there is a case where an SUS joint is provided between the oil feed port and the oil feed pipe to lower the temperature of the oil feed pipe, but the temperature near the oil feed port is high, so the outlet Since the kerosene vaporizes instantly in the above, the above-mentioned drawbacks have not been solved.

[0008]

The present invention has been made to solve the above-mentioned problems, and one end is closed with a lid, a heating element is inserted and fixed from the other end, and a vaporization chamber is formed in the hollow portion to vaporize the vaporization chamber. A carburetor body provided with a wick (filler) that promotes diffusion and vaporization of oil is provided in the chamber, and a nozzle that communicates with the temperature detection element and the vaporization chamber is provided on the heating element fixed side of the carburetor body. On the other hand, in the kerosene vaporizer equipped with an oil feed port connected to the lid side of the carburetor body and having a heat recovery rod for heat recovery between the nozzle and the oil feed port of the carburetor body, The wall thickness between the mouth and the heat receiving rod is thin.

Furthermore, the wall thickness between the heat receiving rod of the carburetor body and the nozzle is increased.

[0010]

With the above construction, even if defective kerosene is used and is supplied to the vaporization chamber, the heat from the heat-receiving rod, which becomes hot due to the combustion flame, has a small cross-sectional area and is located on the oil supply port side of the carburetor body. Since it is difficult to move to, the temperature rise can be suppressed to a low level, so the evaporation of kerosene near the oil supply port of the vaporization chamber will decrease,
In addition, since the cross-sectional area between the heat receiving rod and the nozzle is large, the heat from the heat receiving rod is easily transferred to the downstream side and gradually evaporates in the wick, so the temperature of the heat receiving rod base of the carburetor body decreases and Heat transfer also decreases, the temperature near the oil supply port becomes even lower, and kerosene sent to the oil supply port does not evaporate instantly at the outlet, and pulsating combustion due to breathing of refueling does not occur It acts to reduce the generation of tar due to the residual amount of.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a part of a kerosene vaporizer showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the essential part of the kerosene vaporizer, which is taken along the line AA of FIG. Indicates. FIG.
FIG. 3 is an external perspective view of the kerosene vaporizer.

In the figure, 1 is a substantially hollow cylindrical carburetor body, one end of which is closed by a lid 2,
The heating element 3 is inserted and fixed from the other end, and the vaporization chamber 4 is formed in the hollow portion. A temperature detection element 5 and a nozzle 6 communicating with the vaporization chamber 4 are provided on the side of the vaporizer body 1 where the heating element 3 is fixed. On the other hand, an oil feed port 7 is connected to the lid 2 side of the carburetor body 1, and a wick (filler) 8 that promotes diffusion and vaporization of oil is provided in the vaporization chamber 4. Further, a heat receiving rod 9 for heat recovery is provided above the vaporizer body 1 between the nozzle 6 of the vaporizer body 1 and the oil supply port 7.

Reference numeral 10 denotes a cleaning rod provided on the nozzle 6, and 1
Reference numeral 1 is a solenoid for driving the cleaning rod 10. Reference numeral 12 is an oil feed pipe that is connected to the oil feed port 7 via a SUS joint 13 and is connected to a pump 14 that supplies fuel. Reference numeral 14 is a burner provided in front of the nozzle 6.

The carburetor body 1 is formed with a thin portion a in which the wall thickness between the oil feed port 7 and the heat receiving rod 9 is reduced to 2/3 or less of the conventional thickness, and the space between the heat receiving rod 9 and the nozzle 6 is formed. Is formed to have a thicker portion b.

The operation of this embodiment having the above structure will be described below.

When the heating element 3 is energized during operation of the kerosene vaporizer, the heating element 3 generates heat, but the temperature of the wick 8 in the vaporization chamber 4 is maintained at the temperature necessary for vaporizing kerosene based on the detection of the temperature detecting element 5. When the kerosene is fed into the vaporizing chamber 4 through the oil feed port 7 while the energization control is performed so that the kerosene is vaporized through the wick 8. The vaporized kerosene gas is ejected from the nozzle 6 into the burner 14 and burned by the burner 14.

The cleaning rod 10 of the nozzle 6 is controlled by the solenoid 11 so as to be opened during the operation and closed when the operation is stopped. When the combustion is stopped, part of the heat of the carburetor body 1 is transmitted from the oil supply port 7 to the oil supply pipe 12 through the SUS joint 13, but the SUS joint 13 has a low thermal conductivity, so that the kerosene in the oil supply pipe 12 The temperature rise is small and no residue is attached due to vaporization.

The heat from the heat receiving rod 9 which is heated to a high temperature by the flame of the burner 14 during combustion is transferred to the carburetor body 1.
As shown in the formula, Q = (λf × A × ΔT) / L (1) (λf: thermal conductivity, A: cross-sectional area, ΔT: temperature difference, L: length) Oil feed port 7 of carburetor body 1 When the cross-sectional area A becomes small by reducing the wall thickness between the heat receiving rod 9 and the heat receiving rod 9,
The amount Q of heat transferred from the oil supply port 7 to the oil supply port 7 is reduced, and the temperature in the vicinity of the oil supply port 7 can be lowered. When the cross-sectional area A is increased by increasing the wall thickness between the heat receiving rod 9 and the nozzle 6, the heat transfer amount Q from the carburetor body 1 to the wick 8 on the downstream side is increased and the heat received by the carburetor body 1 is also increased. The temperature of the base of the rod 9 is lowered and the heat transfer to the oil feed port 7 is reduced, and the temperature near the oil feed port 7 can be further lowered.

Here, when defective kerosene (kerosene having a high boiling point due to alteration, etc.) is used, even if kerosene is supplied to the vaporization chamber 4, the heat from the heat-receiving rod 9 has a small cross-sectional area in the vaporizer body 1 Since it is difficult to move to the oil supply port 7 side of the fuel cell and the temperature rise can be suppressed to a low level, kerosene does not evaporate near the oil supply port 7 of the vaporization chamber 4, and the cross-sectional area between the heat receiving rod 9 and the nozzle 6 is large. The heat from the rod 9 easily evaporates in the wick 8 on the downstream side, the temperature of the base of the heat receiving rod 9 of the carburetor body 1 decreases, and the heat transfer to the oil feed port 7 also decreases. The temperature near the mouth 7 drops. Therefore, tar is less likely to be generated in the vicinity of the oil supply port 7 due to the residual amount at the time of evaporation, tar clogging in the vicinity of the oil supply port 7 is less likely to occur, and the life of the kerosene vaporizer can be maintained for a long time.

Further, by lowering the temperature in the vicinity of the oil supply port 7 of the vaporization chamber 4, kerosene gradually evaporates in the wick 8 without vibrating, so that pulsating combustion can be prevented.

[0022]

As described above, according to the present invention, a wick (filler) for promoting diffusion and vaporization of oil is provided in the vaporization chamber formed in the hollow portion by closing one end with the lid and inserting and fixing the heating element from the other end. The carburetor body is provided with a nozzle for communicating with the temperature detecting element and the vaporization chamber on the heating element fixed side, while an oil feed port is provided on the lid side of the carburetor body, and a nozzle and an oil feed port for the carburetor body are provided. With a kerosene vaporizer equipped with a heat recovery rod for heat recovery between the vaporizer body and the heat transfer rod, the wall thickness of the vaporizer body was made thin, so tar clogging near the oil supply port of the vaporization chamber was prevented. It has the effect of making it difficult to cause it, and since the wall thickness between the heat receiving rod and the nozzle of the carburetor body is formed thicker, tar clogging near the oil supply port becomes less likely to occur, and the life of the kerosene vaporizer can be maintained for a long time, In addition, the temperature near the oil supply port of the vaporization chamber Since kerosene gradually evaporates without oscillatory evaporated in the wick, the effect of stabilizing the combustion pulsation even prevent combustion.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional structural schematic view of a kerosene vaporizer according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part showing the AA cross section in FIG. 1 of the kerosene vaporizer.

FIG. 3 is an external perspective view sectional view of the kerosene vaporizer.

FIG. 4 is a cross-sectional view showing a conventional kerosene vaporizer.

[Explanation of symbols]

 1 Vaporizer body 2 Lid 3 Heating element 4 Vaporization chamber 5 Temperature detection element 6 Nozzle 7 Oil feed port 8 Wick (filler) 9 Heat-receiving rod

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Aramaki 1-3, Shinjuyoji, Kashiwa-shi, Chiba 1

Claims (2)

[Claims] 1. A vaporization chamber (4) is formed in the hollow portion by closing one end with a lid (2) and inserting and fixing a heating element (3) from the other end, and diffusion and vaporization of oil in the vaporization chamber (4). A carburetor body (1) provided with a wick (filler) (8) that promotes the heat generation is provided, and the temperature detecting element (5) and the vaporization chamber ( 4) is provided with a nozzle (6) which communicates with the lid (2) of the carburetor body (1)
The oil supply port (7) is connected to the side, and the carburetor body (1) is also connected.
In a kerosene vaporizer having a heat receiving rod (9) for recovering heat between the nozzle (6) and the oil feeding port (7), the carburetor body (1) includes the oil feeding port (7) and the heat receiving rod. (9) A kerosene vaporizer characterized in that the wall thickness is formed thin. 2. The vaporizer body (1) has a heat receiving rod (9).
The kerosene vaporizer according to claim 1, wherein the wall thickness between the nozzle and the nozzle (6) is formed thick.