JPH0419335Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an odor reduction device for an oil burner that reduces the odor caused by vaporized components (gas) generated from the wick during extinguishing operation.

[Prior art] Figure 1 is a cross-sectional view of the main parts of a top-and-bottom wick type combustor.
1 is a core outer cylinder, 2 is a core inner cylinder, 3 is a wick that is vertically slidably disposed in a core guide path 4 formed by the core outer cylinder and the core inner cylinder 2, The oil 23 is sucked up using capillary force. During combustion, the upper end of the wick 3 is made to protrude from the combustion cylinder mounting surface 7 on which the combustion cylinder (burner) 6 of the core outer cylinder 1 is placed, and the oil 23 sucked up is evaporated from there for combustion.

When extinguishing a fire, the upper end of the wick 3 is submerged into the wick guide path 4 to cut off the air supply and reduce evaporation of petroleum to extinguish the fire. At this time, when the temperature of the outer core cylinder 1 and the inner core cylinder 2 is high, incomplete combustion gas is generated at the upper end of the core 3 due to low flame combustion, and when these gases pass through the high temperature combustion cylinder 6, they are thermally decomposed. It was smelling bad.

Therefore, in order to prevent these gases from passing through the high-temperature combustion tube 6, as disclosed in Japanese Patent Laid-Open No. 48-66241, a wick outer tube 1 is placed above the upper end of the wick 3 in the extinguished state. Suction pipe 8 at the top of
A suction device 9, such as a suction pump, was used to suck the gas.

However, although the gas in the vicinity of the suction pipe 8 is well suctioned, the gas in the area away from the suction pipe 8 is difficult to suction, and the suction device (suction pipe (including 8)
The arrangement of the core outer cylinder 1 imposes restrictions on the arrangement of parts and dimensions of the parts in the vicinity of the core outer cylinder 1, and is disadvantageous in terms of design.

In order to eliminate this inconvenience,
As disclosed in Publication No. 16028, suction pipe 8
It is conceivable to communicate with the wall surface of the combustion tank 5 as shown in FIG.

The wick type oil combustor shown in FIG. A suction passage 10 is formed between the core outer cylinder 1 and the core 3 by increasing the diameter of the cylinder below the stepped portion 1a of the core outer cylinder 1. This suction passage 10 communicates with the internal space of the combustion tank 5, and a suction pipe 8 is provided on the upper wall of the combustion tank 5 to suck air from the internal space of the combustion tank 5 using a suction pump of a suction device 9. I try to do that. The suction pipe 8 is connected to a hole 8a formed in the upper wall of the combustion tank 5 between the fuel tank installation part and the burner 6.

Oil pan 2 of combustion tank 5 where fuel tank is installed
1 includes a combustion tank 5 during combustion in the oil combustor.
In order to prevent combustion flames from rising due to an increase in the internal pressure in the combustion tank 5 due to thermal expansion of the air inside the combustion tank 5, the internal space in the combustion tank 5 is communicated with the atmosphere to prevent an increase in the internal pressure in the combustion tank 5. A hole 22 is provided. If this communication hole 22 is in communication with the atmosphere, even if the air in the internal space of the combustion tank 5 is sucked by the suction device 9, the pressure inside the combustion tank 5 will not become negative. Therefore, the communication hole 22 is located above the oil level of the oil 23 during the combustion operation so that the internal space of the combustion tank 5 communicates with the atmosphere, and when the wick 3 is lowered during the extinguishing operation, the wick 3 is placed above the oil level of the oil 23. The communication hole 22 is set to be closed by pushing up the oil level by the volume immersed in the water. Therefore, during the fire extinguishing operation, the combustion tank 5 is in a sealed state except for the portion communicating with the wick guide path 4.

When the upper end of the wick 3 sinks into the wick guide path 4 due to the fire extinguishing operation or the operation of the seismic device, and the combustor enters the extinguishing operation state, the suction device 9 is activated and the air in the internal space of the combustion tank 5 is sucked out. As a result, the internal space of the combustion tank 5 becomes a negative pressure, and the suction passage 10 that communicates with the internal space of the combustion tank 5 also becomes a negative pressure,
As shown by the arrow in FIG. 3, incompletely burned gas and unburned gas generated from the upper end of the wick 3 are uniformly sucked over the entire upper circumference of the wick 3. That is, the gas generated from the upper end of the wick 3 is sucked into the suction pipe 8 through the internal space of the combustion tank section consisting of the outer core cylinder 1, the inner core cylinder 2, and the combustion tank 5. Therefore, there is an advantage that odor can be effectively reduced.

Note that the suction pipe 8 is connected to the suction passage 1 as shown in FIG.
It is also possible to provide it on the peripheral side wall of the outer core cylinder 1 in communication with the core outer cylinder 1.

However, in all of these, the suction pipe 8 is airtightly connected to a hole (for example, 8a) formed in the outer cylinder 1 or the combustion tank 5 by welding or the like.
and a suction device 9, and the provision of the suction pipe 8 increases the size of the entire structure including the suction device, making the structure complicated, and the assembly work is also complicated.

As disclosed in Japanese Patent Application Laid-open No. 56-16028, the suction device 9 includes a suction device that suctions the vaporized components generated from the wick during extinguishing operation, and a suction device that sucks the vaporized components generated from the wick during extinguishing operation, and the suction device 9 that absorbs the vaporized components through the absorption tube 17. It consists of a suction box that stores vaporized components, and a suction device 9.
It also had the disadvantage of becoming larger.

[Purpose] In order to eliminate the above-mentioned drawbacks, the present invention focuses on the fact that odor can be reduced by releasing the vaporized components sucked into the atmosphere at a position where they do not come into contact with the burner again. This eliminates the need for the structure, simplifies and downsizes the structure, and enables efficient recovery of vaporized components.

[Example] Hereinafter, an example of the odor reduction device of the present invention will be described based on the drawings, but the same or equivalent parts as in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 5 is a schematic explanatory diagram showing an embodiment of the present invention. A centrifugal fan 11 for suction and a motor 12, which is an electric motor, are attached to a fan case 13. This case 13 has a container shape with a cavity, and is screwed to the upper wall of the combustion tank 5 so that the fan 11 corresponds to the hole 5a provided in the upper wall of the combustion tank 5. An exhaust duct 14 serving as a discharge passage is formed in the fuel tank 15 to discharge gas around the fuel valve 15a of the fuel tank 15.

Incidentally, as shown in FIG. 6, the fan case 13 is integrally formed with a pot-shaped oil pan 16.
A plurality of exhaust holes 17 are bored around the upper edge. Since the fan case 13 is attached to the combustion tank 5 with a plurality of screws 19 through a gasket 18, oil leakage is prevented. Reference numeral 20 denotes a fuel filler gasket that seals the fuel filler port 5b of the combustion tank 5 with the oil receiving tray 16.

According to the configuration shown in FIG. 5, gas generated from the wick during extinguishing operation is sucked through the combustion tank 5 by the action of the fan 11 rotated by the motor 12, and is directed to the fuel tank 15 side through the exhaust duct 14. Sent. The gas discharged around the oil supply valve 15a from the exhaust hole 17 is liquefied around the oil supply valve 15a, and is returned to the oil receiving tray 16 for disposal. In addition, exhaust duct 1
What is liquefied in the combustion chamber 4 returns to the combustion tank 5 through the hole 5a.

When the centrifugal fan 11 sends out the vaporized components sucked through the holes 5a in a centrifugal direction, the centrifugal fan 11 greatly promotes liquefaction of the vaporized components within the case 13 due to contact with its blades or collision with the side wall of the fan case 13. The oil liquefied inside the fan case 13 drips onto the upper wall of the tank, but if the amount increases,
The fuel is smoothly collected into the combustion tank 5 through the hole 5a formed in the upper wall of the tank. Therefore, unlike when a suction pipe is provided, there is no risk that liquefied oil will accumulate in the pipe and affect the suction of vaporized components.

Therefore, the odor during the fire extinguishing operation can be efficiently reduced, and the liquefied oil can also be recovered.

With such a configuration, the suction device can be formed by simply attaching the case 13 to the upper wall of the combustion tank 5, which is the combustion tank portion, and the suction pipe and the conventional suction box described above are unnecessary. Furthermore, since the upper wall of the combustion tank 5 is used, there is no need to provide a special location for installing a suction device, which is suitable for an oil combustor using a fuel tank. Furthermore, since the upper wall of the combustion tank 5 is used as a member forming the exhaust duct 14, the structure of the suction device is simple. Furthermore,
Since the suction gas is discharged to the installation part of the fuel tank 15, the discharge passage is short, and the motor 12 and fan 11 can be made smaller compared to the case where the suction gas is sucked through the suction pipe. In an oil combustor, a partition plate is usually provided between the oil tank 15 and the burner to protect the oil tank 15 from the heat of the burner during combustion. Therefore, the discharged gas is discharged to the outside of the oil combustor along this partition plate, so that the discharged gas is not sucked back into the burner side and causes a bad odor.

Incidentally, the suction passage 10 may be formed by the core inner cylinder 2 and the core 3, and the present invention is not limited to the embodiments described above and shown in the drawings, but may be modified as appropriate without departing from the gist. Of course, it can also be implemented.

[Effects] According to the present invention, a fan case containing a centrifugal fan rotated by an electric motor is attached to the upper wall of the combustion tank section as a suction device, so the suction pipe can be connected to the combustion tank section as in the conventional case. Not only is it unnecessary, but the suction pipe itself and the suction box are also unnecessary, simplifying the structure and making it possible to downsize. Furthermore, since the suction device is provided integrally with the combustion tank, it is easy to handle, making it extremely suitable as an odor reduction device for oil burners. Moreover, since the vaporized components are efficiently liquefied inside the fan case, not only the amount of vaporized components released into the atmosphere is reduced, but also the liquefied oil is smoothly recovered into the combustion tank through the holes formed in the upper wall. I can do it.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the main parts of a conventional odor reduction device for an up-and-down type oil combustor, Figure 2 is a cross-sectional view of the main parts showing an example of an odor reduction device for a conventional up-and-down type oil combustor. 2 is an explanatory diagram showing the progress of gas suction at the upper part of the wick, FIG. 4 is a sectional view of the main part showing an example of another odor reduction device, and FIG. 5 is a sectional view of the main part showing the embodiment of the present invention. FIG. 6 is an exploded perspective view of FIG. 5. 1... core outer cylinder, 2... core inner cylinder, 3... core, 11
...Fan, 12...Motor, 13...Fan case.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In an oil combustor in which a wick is provided in a wick guide path of a combustion tank part so as to be slidable up and down, and the petroleum in the combustion tank part is sucked up by the wick and burned, the above-mentioned An odor reduction device in which vaporized components generated from a wick are guided out of the combustion tank through holes formed in the combustion tank and the upper wall of the tank using a suction device, the suction centrifuge being rotated by an electric motor. A fan case with a built-in fan is attached to the upper wall of the combustion tank so that the center of the suction fan corresponds to the hole, and the suction device is used, and the vaporized components sucked are discharged to the atmosphere through the fan case as a passage. Odor reduction device for oil burners. 2. The position at which the vaporized components are discharged from the suction device is
The odor reduction device for an oil combustor according to claim 1, wherein the combustion tank section is a fuel tank installation section. 3. The oil combustor odor reduction device according to claim 1 or 2, wherein the fan case forms a discharge passage for the vaporized components between the fan case and the wall surface of the combustion tank section.