JPH1182931A - Kerosene vaporizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a kerosene vaporizer in which a stable combustion can be obtained without pulsation, and the clogging of tar is not generated in an oil feed port as a connecting part of an oil feed pipe and a vaporizer body. SOLUTION: A cap 3 of a vaporizer body 1 for closing a side opposite to a side into which a heat generating body 4 is inserted is made of stainless steel low in thermal conductivity. The cap 3 is formed in a two-stage restricted shape and an oil feed port is opened in the small diameter restricted part thereof. Thus, a heating value transferred to the oil feed port 6 from the vaporizer body 1 is effectively suppressed, so that the rise of temperature in the oil feed port 6 is suppressed and kerosene is not vaporized in the oil feed port 6. Further, a wick 5 has its sideward dimension of the cap 3 the same as that of the vaporizer body 1 or increased more by length L so that it comes into contact with the cap 3 to have no pulsating combustion. Further, the tar is not generated in the oil feed port 6 and the durability of the vaporizer to the clogging of tar is more improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporizer for vaporizing kerosene by combustion heat recovered through a heat receiving rod in addition to heat generated by a heating element.

[0002]

2. Description of the Related Art FIG. 4 is a cross-sectional view of a conventional kerosene vaporizer, in which 101 is a hollow cylindrical vaporizer body, 201 is a vaporization chamber formed in the vaporizer body 101, Reference numeral 301 denotes a cap for closing one end of the vaporizer body 101, and 401 denotes a vaporization chamber 20 in the vaporizer body 101.
A heating element 501 inserted from the other end and fixed therein is a wick 501 for promoting the diffusion and vaporization of kerosene in the vaporizer body 101. Reference numeral 601 denotes an oil supply port through which kerosene is sent from a pump; 701, a nozzle from which vaporized kerosene is jetted; It is. Reference numeral 901 denotes a vaporizer temperature detecting element for detecting the temperature of the vaporizer body 101.

In this kerosene vaporizer, when an operation for starting operation is performed, the heating element 401 is controlled based on information of the temperature detecting element 901 to raise the vaporizer body 101 to a predetermined temperature. When the vaporizer body temperature reaches a predetermined value,
A pump (not shown) starts operating, and kerosene is vaporized in the vaporization chamber 20.
At the same time, the cleaning rod (not shown) is operated by operating a solenoid (not shown), and the nozzle 701 is opened. As a result, the generated kerosene gas is supplied to the nozzle 7
01 to a burner (not shown), where combustion takes place.

During combustion, the heat receiving rod 801 is exposed to a combustion flame,
The heat received by the heat receiving rod 8 from the flame, that is, the recovered heat, is supplied to the vaporizer body 101. After the temperature of the vaporizer body rises above the predetermined temperature, the operation of the heating element 401 is stopped, the temperature of the vaporizer body 101 is maintained at the predetermined value or more by the heat from the heat receiving rod 801, and the vaporization of kerosene continues. Is done.

[0005]

However, in the above-mentioned conventional vaporizer, the heat receiving rod 801 for recovering heat from the combustion flame is provided close to the oil feed port 701, so that the oil feed port 60 is provided.
1 tends to increase, and sometimes the oil supply port 601
The phenomenon that kerosene exhaled from is evaporated instantaneously occurs,
In some cases, pulsating combustion may be caused or kerosene may be degraded to cause clogging of the oil supply port 601 with tar.

Conventionally, in order to solve this problem, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 60-81437, the cross-sectional area of the heat conduction path between the carburetor body and the oil supply pipe at the oil supply pipe mounting portion is reduced. , Or 3-11262
As disclosed in Japanese Patent Application Publication No. 2 (1993), an oil feed pipe is connected to a carburetor body through a stainless steel joint having low thermal conductivity, but this has not been a fundamental solution.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a vaporizer body having a hollow vaporization chamber formed therein, one end of which is closed with a cap, and heat generation from the other end. The body and the wick are inserted, and a nozzle for ejecting kerosene vaporized gas generated in the vaporization chamber and a temperature detecting element for detecting the temperature of the vaporizer body are provided on the side of the heating element insertion side of the vaporizer body. In a kerosene vaporizer equipped with a heat receiving rod that recovers combustion heat by being exposed to combustion flame between the cap and nozzle of the body, the cap is made of stainless steel with poor heat conductivity, and an oil feed port is opened in this cap. In this case, the kerosene vaporizer is constructed, and the tip of the wick is abutted against the high-temperature vaporizer body so that the oil from the oil supply port passes through the relatively low-temperature cap and does not come into direct contact with the cap.

Further, the cap has a two-stage throttle, and an oil feed port is opened in a small-diameter throttle portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the above-described structure, and the combustion heat recovered by the heat receiving rod reaches the oil feed port from the vaporizer body via the stainless steel cap, and the stainless steel having poor heat conductivity. Utilizing the properties of steel, the rise in the temperature of the oil supply port is effectively suppressed, so that kerosene is not vaporized at the oil supply port. As a result, tarring of kerosene at the oil feed port can be effectively suppressed.

[0010] Further, the oil flowing from the oil feed port passes through the relatively low-temperature cap and flows into the high-temperature vaporizer body side. In this case, the tip of the wick abuts on the cap. The pulsation phenomenon in which oil evaporates instantaneously in the high-temperature vaporizer body can be prevented.

Further, by forming the cap into a two-stage throttle type and opening an oil feed port in a small diameter portion of the cap, the heat flow from the vaporizer body to the oil feed port is further suppressed, and Evaporation and tarification at the oil port are even more effectively suppressed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

In these figures, 1 is a hollow cylindrical vaporizer body, 2 is a vaporization chamber formed in the vaporizer body 1, and 3 is a stainless steel cap for closing one end of the vaporizer body 1. Thus, as shown in FIG. 2, two stages of drawing are performed. 4 is a vaporization chamber 2 in the vaporizer body 1
The heating element 5 inserted and fixed from the other end into the inside is a wick for promoting diffusion and vaporization of kerosene in the vaporizer body 1. Reference numeral 6 denotes an oil supply port through which kerosene is fed from the pump, which is opened on the small diameter side of the stainless steel cap 3 described above. Reference numeral 7 denotes a nozzle from which vaporized kerosene is jetted, and reference numeral 8 denotes a nozzle provided between the nozzle 7 of the vaporizer body 1 and the cap 3 and receives heat by being exposed to a combustion flame and recovers the heat (recovery heat). Is a vaporizer temperature detecting element for detecting the temperature of the vaporizer body 1. Reference numeral 10 denotes a cleaning rod provided in the nozzle 7, reference numeral 11 denotes a solenoid for driving the cleaning rod 10 in the left-right direction in FIG.
Reference numeral 12 denotes a pump for supplying kerosene to the oil supply port 6, and reference numeral 13 denotes a burner for burning kerosene gas ejected from the nozzle 7.

The wick 5 is provided in contact with the cap 3 such that the dimension in the direction of the cap 3 is the same as the dimension of the carburetor body 1 in the direction of the cap 3 or is increased by a length L as shown in FIG. It is.

Next, the operation of the embodiment constructed as described above will be described.

When the operation for starting operation is performed, the heating element 4 is controlled based on the information of the temperature detecting element 9 to raise the vaporizer body 1 to a predetermined temperature. When the vaporizer body temperature reaches a predetermined value, the pump 12 is operated to feed kerosene into the vaporizing chamber 2, and at the same time, the solenoid 11 is operated to move the cleaning rod 10, and the nozzle 7 is opened. Thereby, the generated kerosene gas is supplied from the nozzle 7 to the burner 13,
There combustion takes place.

The cleaning rod 10 opening the nozzle 7 during the burning operation is closed so as to close it when the burning operation is stopped.
Driven by the solenoid 11.

During the combustion, the heat receiving rod 8 is exposed to the combustion flame, and the heat receiving rod 8 receives the heat from the flame, that is, the recovered heat, is supplied to the carburetor body 1, and the temperature of the carburetor body becomes a predetermined temperature. After the rise, the operation of the heating element 4 is stopped, the temperature of the vaporizer body 1 is maintained at a predetermined temperature or higher by the heat from the heat receiving rod 8, and the vaporization of kerosene can be continued.

In this embodiment, the oil supply port 6
Is opened at the small diameter portion of the thermally conductive stainless steel cap 3 which is drawn down in two steps, and the carburetor body 1 is
Since the heat transmitted to the cap 3 via the opening is difficult to reach the oil feed port 6, the oil feed port 6 does not become abnormally high temperature, and the kerosene evaporates instantaneously at the oil feed port 6 part. Is gone. Further, since the wick 5 is configured to be in contact with the cap 3, the oil flowing through the cap 3 and flowing into the vaporization chamber 2 does not directly contact the vaporizer body 1 in the high-temperature portion, so that no pulsation occurs. Stable combustion can now be performed.

Further, since the kerosene is less likely to be tarred at the oil feed port 6, the life of the vaporizer can be greatly extended.

[0021]

As described above, according to the present invention, the cap is made of stainless steel having a low thermal conductivity, and the cap is formed into a two-stage drawing and an oil supply port is opened in a small diameter portion thereof. And the amount of heat reaching the oil feed port through the cap from the vaporizer body is greatly limited,
The oil inlet temperature does not rise abnormally, and the wick is in contact with the cap to prevent pulsation in the high-temperature carburetor body and maintain stable combustion. Can be effectively suppressed.

[Brief description of the drawings]

FIG. 1 is a schematic partial cross-sectional view of a combustor using an embodiment of the present invention.

FIG. 2 is a cross-sectional view of one embodiment of the present invention.

FIG. 3 is a perspective view of one embodiment of the present invention.

FIG. 4 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vaporizer body 2 Vaporization chamber 3 Cap 4 Heating element 5 Wick 6 Oil supply port 7 Nozzle 8 Heat receiving rod 9 Temperature detection element

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shoji Aramaki 3-1, Shinjuyoji 2 Kashiwa-shi, Chiba Pref.

Claims (2)

[Claims] An end of a vaporizer body (1) having a hollow vaporization chamber (2) formed therein is closed at one end with a cap (3), and a heating element (4) and a wick (4) are provided in the hollow of the vaporizer body. 5), a nozzle (7) for ejecting kerosene vaporized gas generated in the vaporization chamber and a temperature detecting element (9) for detecting the temperature of the vaporizer body, on the side of the vaporizer body on which the heating element is inserted. In a kerosene vaporizer, wherein a heat receiving rod (8) is provided between the cap and the nozzle of the carburetor body for recovering combustion heat by being exposed to a combustion flame. The cap is provided with an oil supply port (6), and one or more wicks are provided between the carburetor body and the heating element. , The dimension in the cap side direction A kerosene vaporizer characterized in that the kerosene vaporizer body has the same length as the dimension of the vaporizer body in the direction of the cap or is longer by a length L and is brought into contact with the cap. 2. The kerosene vaporizer according to claim 1, wherein the cap has a two-stage throttle, and the oil supply port is opened in a small-diameter throttle portion.