JPS589042Y2 - Evaporative combustion device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vaporization type combustion device that is designed to promptly collect and remove non-regular fuel oil such as denatured oil or impure oil in order to maintain the carburetor. .

White kerosene is used as fuel in this type of vaporizing combustion device, but it is generally stored separately in a polyethylene container or the like for daily replenishment.

However, if the kerosene left for a long period of time is not stored properly, the kerosene often undergoes chemical changes and deteriorates in quality.

These deterioration phenomena are said to occur because kerosene gradually degenerates into different components and becomes suspended due to the effects of sunlight irradiation or chemical interactions with the polyethylene container mentioned above. It turned pale yellow in color.

Such altered foreign components have a property that they are extremely difficult to vaporize compared to the vaporization temperature of unaltered genuine kerosene (usually about 200 to 280°C), and do not vaporize unless the temperature is high.

Therefore, when altered oil is supplied as described above into a vaporizer whose temperature is controlled to correspond to genuine white kerosene, the foreign moldings remain at the bottom of the vaporizer before being vaporized.
When this reaches a high-temperature area near the combustion part, it adheres in the form of tar, causing subsequent combustion problems.

On the other hand, if impure oil gets into the storage container,
For example, if even a small amount of this is mixed into kerosene when it is used in combination with another container used for storing vegetable oil (rapeseed oil, etc.), problems similar to the above-mentioned denatured oil will occur.

In any case, if degraded or impure oil is supplied into the vaporizer and remains as a non-vaporized liquid, this will turn into tar and adhere to it, reducing the amount of vaporized gas that is vaporized as normal fuel and reducing the mixed gas concentration. This makes it difficult to ignite.

Furthermore, even if ignition occurs, if a large amount of tar adheres to the surface, the temperature of the fuel vaporization surface will drop, and the gas with a low vaporization temperature will be carried to the burner surface, causing some of it to condense and cause the burner flame to ignite. Adheres to the hole.

When this is ignited, local ignition combustion occurs, and the temperature of the unused gas in the combustion part increases for a while, causing the ignition combustion to spread, leading to a state of gas lead and ignition delay, leading to explosive ignition. There is also a risk of danger.

When denatured oil or impure oil is supplied in this way, it causes various adverse effects not only at the time of ignition but also after ignition, making it difficult to continue normal combustion. No measures had been taken to prevent the use of impure oil, and the only option was to urge general users to be careful when handling kerosene.

However, since it is difficult for general users to check fuel costs as a daily habit, it is possible that non-regular fuel is often supplied, and countermeasures are desperately needed in such cases. .

This invention was developed under the above circumstances.
An object of the present invention is to provide a vaporizing combustion device in which a recovery path is provided in a vaporizer, and when degraded or impure oil is supplied, foreign components in the oil are promptly recovered so that normal combustion operation can be continued at all times. It is something to do.

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

In the figure, 1 is a cylindrical carburetor made of aluminum die-casting or the like, and a burner plate 3 having a large number of through holes 2 is attached to the front opening, and a preheating heater 4 is attached to the rear end.
is buried therein, and a fan casing 5 and a motor casing 6 are further connected to the rear end surface.

A motor I is installed inside the motor casing 6, and its rotating shaft 8 passes through the inside of the fan casing 5 and faces into the carburetor 1, with a sprayer 9 at its tip and a pair of fans 10 in the middle. °10 is attached.

Reference numeral 11 denotes a fuel supply pipe, which is led out from a constant oil level device 13 communicating with a fuel tank (not shown), passes through an electromagnetic pump 14, and has its tip facing into the atomizer 9.

After the temperature of the vaporizer 1 is raised to a certain level by the preheating heater 4, the motor 7 is started to rotate the fans 10, 10 and the atomizer 9, and the electromagnetic pump 14 is used to send oil into the atomizer through the oil supply pipe 11. Fuel (white kerosene) is sequentially supplied to the vaporizer 1, which is sprayed into the vaporizer 1 by the rotating centrifugal force of the atomizer 9, and is also sprayed into the vaporizer 1 by the fan 10.10.
Air passing through an intake port 15 bored in the motor casing 6 is blown as combustion air.

The fuel sprayed into the carburetor 1 hits the circumferential wall of the carburetor 10 and is vaporized by the heat, becoming a vaporized gas and mixing with the combustion air, while each through hole 2 of the burner plate 3
It is ejected from ..., ignited by the ignition mechanism 16, and ignited to burn.

The button 17 is a rectifier plate that adjusts the flow of vaporized gas, and has a plurality of openings 18 on the plate surface facing away from the burner plate 3.
- and has fins 19.

Further, an inclined box 20 is formed on the inner peripheral bottom wall of the vaporizer 1,
A discharge pipe 21 for separating and recovering altered or impure oil is led out from the lower end of the slope.

This lead-out portion is arranged to extend so as to be inclined with respect to the horizontal, and the discharge pipe 21 is located on the extending end side of the lead-out portion.
A cap nut-shaped pot holder is connected to the body 23 via a nut 24 to its flow outlet 25 to which a drain pot 22 (to be described later) is removably attached, which collects and stores and displays degraded and impure oil flowing down inside. are opened in series.

The body 23 of this pot holder is fixed to a part of the device body 30 via a mounting bracket 26, and the above-mentioned outlet 25, which is connected to and opened to the discharge pipe 21, is located in the middle of the pot holder, as shown in FIG. It is a widening opening that gradually expands downward from the bottom, and the edge of the opening is connected to the drain pot 22.
An annular groove 27 is carved on the outer periphery so as to form an acute angle facing inward.

On the other hand, the above-mentioned drain pot 22 is formed as a bottomed cylindrical transparent body with an open upper end and a threaded portion 28 on the outer side thereof which is screwed and attached to the pot holder 23.
The upper end opening is suspended with a gasket 29 in liquid-tight contact with the pot holder 23 to prevent gas leakage when the drain pot 22 is screwed into the drain pot 22. A cylindrical drain guide 31 that is concentrically formed and open at the upper and lower ends is installed, and its upper end opening 32 is slightly connected to the end edge of the outlet opening 25 of the pot holder 23 which is connected to the discharge pipe 23 and opened. The drain pots 22 are configured to face each other with a gap in between, and are provided with a plurality of notches 33 in the lower end opening that communicate with the bottom of the drain pot 22.

The drain guide body 31 is coated with, for example, white paint to have a reflective function inside the pot, and is equipped with a gauge along with the drain pot 22 so that discolored and impure oil collected in the drain pot 22 can be clearly identified from the outside. It is installed inside the front panel 40 of the appliance body 30 incorporating the above-mentioned combustion device shown in FIG.
A warning can be confirmed through this window 41 by opening the window 41.

Next, the operation of this embodiment will be explained.

When regular genuine kerosene is used as fuel, combustion continues as described above.

On the other hand, when non-regular fuel such as altered oil or impure oil is sprayed from the atomizer 9, only the genuine kerosene component is vaporized, and the other altered and impure foreign components are vaporized and remain in liquid form. The condensed water remains in the vaporizer.

This is because the vaporization temperature of the foreign component is significantly higher than that of the genuine component, and the vaporizer 1 is controlled to a temperature corresponding to the vaporization temperature of genuine white kerosene.

The condensed foreign components reach the inner peripheral bottom wall of the vaporizer 1, which is the direction of their movement, and this inner peripheral bottom wall has an inclined box 20 for collecting and discharging the foreign components. pipe 21
is derived, so the different components are extracted from this discharge pipe 2.
1 and is successively collected into the drain pot 22.

On the other hand, kerosene as a genuine component is actively vaporized by the heat of the vaporizer 1, becomes a vaporized gas, is mixed with combustion air, is ejected from each through hole 2 of the burner plate 3, and is ignited and ignited to burn.

As mentioned above, the altered and impure foreign components are collected and flowed down from the vaporizer 1 into the drain pot 22 via the discharge pipe 21, but since they are highly active liquids, the flow rate is slow, and especially Discharge pipe 2 facing inside the drain pot 22
If the end of the opening No. 3 is flat, the surface tension of the foreign components flowing out to the end acts to block the opening, making it difficult for the components to flow down into the drain pot 22, making it impossible to drain them effectively. However, the discharge pipe 2
At the end of the drain port 25 of the drain receiver 23, which is connected to the drain port 1,
By arranging the guide body 31, which also serves as a reflection plate, inside the drain pot 22, which acts as a collection gauge, the dissimilar components flowing down come into contact with the guide body 31, which breaks its surface tension, and is transmitted through the guide body 31. Since the oil is stored smoothly in the drain pot 22, the discharge vibrator 21
It is possible to prevent in advance that collection of foreign components flowing down inside is inhibited.

The drain pot 22 is connected to the front panel 4 of the appliance body 30.
It is possible to see through the instrument body 30 from the outside through the viewing window 41 which is opened at 0, and therefore it is possible to easily know whether foreign components have been collected in the drain pot 22 and the amount thereof. After detection, all you have to do is replace the fuel with regular genuine kerosene.

In other words, the accumulation of foreign components in the drain pot 22 serves as a warning against the use of non-regular fuel.

In this embodiment, the guide body 31 installed inside the drain pot 22 is coated with white paint and also functions as a reflector, making it possible to clearly detect the presence of collected and stored foreign components. It can be done.

This is because while genuine white kerosene is colorless and transparent, when it deteriorates over time and generates different components, those different components take on a yellow color, so when collected in the drain pot 22, The presence of the guide body 31 becomes clearer due to its difference from the white color of the guide body 31 installed inside.

After the foreign components have been collected in the drain pot 22, open the front panel 40 of the device body 30 and open the drain pipe 21.
It is sufficient to remove only the drain pot 22, discard foreign components, and reinstall the drain pot 22.

In the above embodiment, a case has been described in which the guide body 31 housed inside the drain pot 22 is formed as a separate cylindrical body, but the flat guide body 31 shown in FIG.
Alternatively, the guide body 31' may be molded integrally with the drain pot 22.

Further, the upper end of the guide body 31 is located at the downstream entrance 2 of the discharge pipe 21.
5, but it is not necessary to arrange them close to each other, and for the purpose of improving drainage of different components, it is possible to have a part of them in contact with each other. The effects can be expected.

Furthermore, as shown in FIG. 5, a float switch mechanism 45 is incorporated in the drain pot 22, and the float switch mechanism 45 operates when foreign components are recovered to enable visual confirmation, thereby controlling the operation of the combustor. May be used in conjunction with an electrical safety circuit that automatically shuts down the circuit.
In this case, it is possible to provide a product that is safer against contamination with different components.

As explained above, this device leads out the discharge pipe from the bottom of the carburetor, opens the discharge end into the drain hot, and installs a guide body inside this pot to facilitate drain drainage, and the upper end of the discharge pipe. Since the part is configured to face and be in close proximity to the extended open end of the discharge pipe, or to come into contact with a part of it, even if denatured oil or impure oil is supplied, the foreign components will not enter the vaporizer as in the conventional case. The carburetor can be maintained in a normal state at all times because it does not accumulate or flow into the combustion section and turn into tar, thereby inhibiting the carburetor's function.

Since the foreign components flowing down inside the drain pipe are highly active liquids, there is a tendency to block the opening of the drain pipe opened in the drain pot due to their surface tension. Since this can be quickly flowed down by the action of the body, recovery of the above-mentioned foreign components will not be inhibited.

The collected foreign components are stored in the drain pot and can be checked from the outside, so it is possible to clearly detect when foreign components are collected and if non-regular fuel is being used. This can prevent such fuel from being inadvertently used for a long period of time.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a sectional view showing the main parts thereof, Fig. 3 is an external perspective view of the main body of the instrument when this invention is implemented, Figs. FIG. 5 is a sectional view of essential parts showing other embodiments of this invention. 1... Carburizer, 21... Discharge pipe,
22... Drain pot, 31, 31'...
... Guide body, 25 ... Outlet.

Claims (1)

[Scope of utility model registration request] Fuel oil is supplied to a vaporizer whose heating is controlled to a predetermined temperature in advance to produce vaporized gas, which is mixed with air and combusted. A discharge pipe that separates and recovers foreign components from the bottom of the vaporizer when mixed oil or other impure oil is supplied;
It is characterized by comprising: a see-through drain pot that is hermetically connected to the extended open end of the discharge pipe; and a guide body located within the drain pot opposite to the extended open end of the discharge pipe. A vaporization combustion device.