JPH0229395Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a vaporizer that vaporizes and burns liquid fuel.

(Prior Art) Conventionally, when liquid fuel such as kerosene is vaporized and ejected from a nozzle to a burner for combustion, a vaporizer is connected to the nozzle as shown in Japanese Patent Application Laid-open No. 54-23231, for example. A fuel supply device is connected to the vaporizer, and the vaporizer is equipped with an electric heater and a heat receiving part from the combustion part for the vaporizer pipe, and the fuel in the vaporizer pipe is heated and vaporized by the electric heater, and is ejected from a nozzle and ignited and combusted. During combustion, the heat of combustion is received by the heat receiving section and vaporized.

(Problems to be Solved by the Invention) The above devices generally have a problem in that the fuel path is easily clogged by heavy components (tar-like substances) that precipitate when the fuel is vaporized.

The present invention is intended to solve the above-mentioned problems, and aims to increase durability against heavy fuel components.

[Structure of the idea]

(Means for Solving the Problems) The vaporizer of the present invention has a nozzle arranged on a burner, and an electric heater that communicates with the nozzle to vaporize the fuel and supply vaporized gas to the nozzle. a first vaporization chamber that communicates with the first vaporization chamber and is provided in a part of the burner, vaporizes the fuel by the combustion heat of the fuel, and supplies vaporized gas to the nozzle through the first vaporization chamber. a second vaporization chamber for supplying a gas, and the second vaporization chamber has a vaporization recess that communicates with the first vaporization chamber in the heat conductive plate extending from the burner, and a vaporization recess that communicates with the first vaporization chamber. The outer surface is covered with an outer plate, and a fuel supply port body is attached to the outer plate, with the jet nozzle at the tip facing the inner surface of the vaporization recess.

(Function) In the present invention, at the start of combustion, the electric heater connected to the first vaporization chamber is energized to generate heat, the liquid fuel is jetted out from the spout of the fuel supply port body, and this fuel is transferred to the second vaporization chamber. It is guided through the vaporization chamber to the first vaporization chamber,
Here, the fuel is heated and vaporized and ejected into the burner.
It is ignited and burned.

Then, when the temperature of the burner increases due to combustion, the vaporization recess of the second vaporization chamber is heated through the heat conductive plate, and the fuel is vaporized in the second vaporization chamber.

During this steady combustion, the fuel is injected from the fuel supply port body and brought into direct contact with the vaporization recess that serves as the receiving surface for combustion heat in the second vaporization chamber, so that the fuel is directly heated and vaporized by the heat of the burner. will be carried out reliably. Additionally, during combustion, the temperature of the fuel rises and vaporization occurs on the heat receiving surface of the vaporization recess in the heat conduction plate of the burner, so the heavy components generated when the fuel vaporizes adhere to the heat receiving surface, causing the first vaporization chamber to It has great durability against heavy components.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

11 is a carburetor main body formed into an almost flat plate shape;
A nozzle 12 is provided in the middle portion of one side of the carburetor body 11 in the lateral direction. This nozzle 12 is
A nozzle body 1 having an approximately semicircular cross section is provided in the carburetor body 11.
3 is integrally formed, a communication hole 14 is formed in the axial direction in this nozzle body 13, a communication hole 15 is formed in the middle upper part of this communication hole 14, and a jet nozzle is formed at the tip of the nozzle body 13. 16 is attached, and a pipe body 18 is connected to the rear part of the nozzle body 13, and from inside this pipe body 18, the communication hole 14 of the nozzle body 13 and the spout body 17 are connected.
A needle shaft 19 is provided so as to be able to move forward and backward within the tubular body 18, and furthermore, a movement mechanism 20 for the needle shaft 19 and a gas relief pipe joint 21 are provided at the rear of the tube body 18.

A vaporizing chamber plate 23 having an arc-shaped guide portion 22 corresponding to the outer side of the nozzle main body 13 is attached along the outer side of one side of the vaporizer main body 11, and this vaporizing chamber plate 23 and the outer surface of the vaporizer main body 11 and A flat first vaporization chamber 24 is formed along one side of the vaporizer main body 11 between the nozzle main body 13 and the outer surface of the nozzle main body 13;
A terminal end of a bent portion 25 along the outside of the nozzle body 13 of the first vaporization chamber 24 communicates with the communication hole 15 .

A plate-shaped electric heater 27 is brought into contact with the other side of the carburetor main body 11, and a heater restraining plate 28 is brought into contact with the outer surface of the electric heater 27. Heater cover 3
0 is provided, and the upper and lower portions of this heater cover 30 are provided with mounting portions 3 formed at the upper and lower portions of the carburetor main body 11.
1 with screws 32, and an electric heater 27 is pressed into contact with the carburetor main body 11. Further, a sensor mounting portion 33 is provided at the upper part of one side of the vaporizer main body 11, and the electric heater 2 is attached to this sensor mounting portion 33.
7 and a temperature sensor 3 for controlling the supply of liquid fuel.
4 is installed.

One side edge of the carburetor main body burner 11 is the outer plate 4
This outer panel 4 is integrally joined at right angles to one side of 1
As shown in FIG. 5, one side opening 24a of the first vaporization chamber 24 is communicated with the other surface of the first vaporization chamber 24. Further, a fuel supply port body 42 is attached to the upper part of the substrate 41, and a constricted jet port 43 is formed at the tip of the fuel supply port body 42.

Further, 51 is a burner, and this burner 51 has many through holes 5 in a burner frame 52, as shown in FIG.
3, a gas chamber frame 55 that communicates with the combustion port body 54 is attached to the lower part of the burner frame 52, and an air outlet tube with one end opened inside the gas chamber frame 55. 56 is provided, and a heat conductive plate 57 extends from the lower part of one side of the burner frame 52.

A vaporization recess 58 is formed in the heat conductive plate 57, and the outer plate 41 is brought into contact with the outer surface of the vaporization recess 58 and fixed with the mounting screws 59 at the four corners of the outer plate 41. A flat second vaporization chamber 60 is formed between the vaporization recess 58 and the second vaporization chamber 60, and one side opening 24a of the first vaporization chamber 24 is communicated with the second vaporization chamber 60. 2
The ejection port 43 at the tip of the fuel supply port body 42 is opposed to the inner surface of the vaporization recess 58 of the vaporization chamber 60, and the ejection port body 17 of the nozzle 12 is opposed to the inner surface of the vaporization recess 58 of the vaporization chamber 60.
It is facing the opening of No. 6.

Next, the operation will be explained.

When performing combustion, when the electric heater 27 for the first vaporization chamber 24 is energized to generate heat, the vaporizer main body 11 is heated and its temperature increases. When the carburetor main body 11 reaches a predetermined temperature, the advancing/retracting mechanism 20 is actuated by a signal from the temperature sensor 34, and the needle shaft 19 retreats from the spout 16 of the spout body 17 to open the spout 16, and , a fuel supply mechanism (not shown) is operated, and kerosene as liquid fuel is jetted out from the spout 43 of the fuel supply port body 42, and this kerosene is fed into the second vaporization chamber 60 between the vaporization recess 58 of the outer panel 41. The gas enters the first vaporization chamber 24 between the vaporizer main body 11 and the vaporization chamber plate 23 through the opening 24a, and is heated by the vaporizer main body 11 to rise in temperature, and the gas become This gasified kerosene is pressurized by the bent part 25 between the nozzle body 13 and the guide part 22 of the vaporization chamber plate 23, and the temperature further rises and enters the communication hole 14 in the nozzle body 13 through the communication hole 15. It is ejected from the ejection port 16 of the ejection port body 17 into the blow-off port tube 56 of the burner 51, guided outward from the gas chamber frame 55 through the numerous through holes 53 of the combustion port body 54, and ignited and burned. Note that at this time, the pipe line of the gas relief pipe joint 21 is closed by an external valve.

Next, when the temperature of the burner 51 rises due to combustion, the vaporization recess 58 of the second vaporization chamber 60 is heated via the heat conductive plate 57, and the kerosene is vaporized in the second vaporization chamber 60, and the device The entire temperature rises, and at a predetermined temperature, the temperature sensor 34
The electric heater 27 is turned off in response to a signal from the kerosene, and in this state the second vaporization chamber 60 is maintained at a predetermined temperature to continuously gasify and eject kerosene.

During the ignition combustion, the vaporized gas is pressurized at the bent portion 25 of the first vaporization chamber 24, so there is no need to use a continuous foam or mesh heating medium, pressurizing material, etc., and clogging is less likely to occur. Since the volume of the vaporizer can be increased, durability can be improved, and stable internal pressure can be maintained, combustion can be stabilized quickly.

In addition, during this steady combustion, the kerosene is ejected from the fuel supply port body 42 and brought into direct contact with the vaporization recess 58 which serves as the receiving surface of the combustion heat of the second vaporization chamber 60, so that the heat of the burner 51 is directly applied to the kerosene. The kerosene is heated and vaporized, and a phenomenon of atomization of kerosene occurs on the inner surface of the vaporization recess 58, promoting vaporization and ensuring vaporization. Also, during combustion, the temperature of kerosene rises and vaporizes at the vaporization recess 58 in the heat conductive plate 57 of the burner 51.
Because this occurs on the heat receiving surface of the kerosene, the heavy components generated when the kerosene vaporizes adhere to the heat receiving surface, causing the first vaporization chamber 24
Furthermore, the second vaporization chamber 3
By spouting kerosene from the upper part of the kerosene and vaporizing it, the volume of the second vaporization chamber 60 can be effectively utilized for generating heavy components, and the durability of producing heavy components is high.

In addition, if the fuel is squeezed and ejected from the jet port 43 of the fuel supply port body 42 and brought into contact with the heat receiving surface as described above,
The heavy components generated from kerosene during vaporization adhere to the heat-receiving surface, which tends to cause the kerosene path to shrink during combustion. By ejecting it diagonally downward, the growth of the lower portion of the heavy component that grows in a cylindrical shape is significantly delayed, the shrinkage of the kerosene path is extremely slowed down, and the durability against heavy components can be greatly improved. .

When extinguishing a fire, the refueling mechanism is stopped by a fire extinguishing operation command to stop the supply of kerosene from the combustion supply port body 42, and the advancing/retracting mechanism 20 at the nozzle 12 is stopped.
The needle shaft 19 is moved to the side of the spout body 17 to close and clean the spout 16, and the valve on the outside of the gas relief pipe joint 21 is operated to open the pipe line and release the internal gas. emit.

[Effect of idea]

According to the present invention, during steady combustion, the fuel is injected from the fuel supply port and brought into direct contact with the vaporization recess that serves as the receiving surface for combustion heat in the second vaporization chamber, so that the fuel is directly affected by the heat of the burner. The fuel is heated and vaporized, and vaporization is reliably carried out. Also, during combustion, the temperature of the fuel rises and vaporization occurs on the heat receiving surface of the vaporization recess in the heat conduction plate of the burner, so the heavy components generated when the fuel vaporizes are reduced. It does not adhere to the heat receiving surface and migrate to the first vaporization chamber, and as a result, durability against heavy components can be increased.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the device of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a first side view, and Fig. 4 is a cross-sectional view of the section shown in Fig. 3. , Fig. 5 is a sectional view of the part shown in Fig. 4, and Fig. 6 is a sectional view of the part shown in Fig. 4.
FIG. 7 is a sectional view of the section shown in FIG. 4, and FIG. 8 is a partially cutaway side view of the device attached to the burner. 12... Nozzle, 24... First vaporization chamber, 27
... Electric heater, 41 ... Outer plate, 42 ... Fuel supply port body, 43 ... Spout port, 51 ... Burner, 57
... Heat conduction plate, 58 ... Vaporization recess, 60 ... Second vaporization chamber.

Claims (1)

[Scope of Claim for Utility Model Registration] A nozzle disposed with respect to the burner; a first vaporization chamber communicated with the nozzle that vaporizes fuel by heating with an electric heater and supplies vaporized gas to the nozzle; a second vaporization chamber that is connected to the first vaporization chamber and is provided in a part of the burner, vaporizes the fuel by the combustion heat of the fuel, and supplies vaporized gas to the nozzle via the first vaporization chamber; , the second vaporization chamber is configured by forming a vaporization recess communicating with the first vaporization chamber in the heat conductive plate extending from the burner, and covering the outer surface of the vaporization recess with an outer plate. . A vaporizer, characterized in that a fuel supply port body is attached to the outer plate, the jet outlet at the tip facing the inner surface of the vaporizer recess.