JPH04297720A - Device for reducing odor from liquid fuel burner - Google Patents

Abstract

PURPOSE:To deodorize discharged gas completely by further deodorizing vaporized components sucked by a suction means of an odor reducing device in a liquid fuel burner. CONSTITUTION:A secondary combustion unit 26 and an oxidizing catalyst 28 are disposed in the vicinity of a combustion cylinder 1, and a conduit pipe 24 for vaporized components from a discharge port 21 of a suction means 20 to both the secondary combustion unit 26 and the oxidizing catalyst 28 is laid.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an odor reduction device for reducing odor by sucking vaporized components generated during extinguishing operations of liquid fuel combustion equipment such as kerosene stoves.

0002

2. Description of the Related Art FIG. 2 is a schematic diagram of a conventional odor reduction device for a kerosene stove.

The figure shows the fire extinguishing operation state, and the wick 13 in the combustion tube 1 is located below. At the lower part of the core outer cylinder 12 of the combustion cylinder 1, there is a suction passage 12b with a wide cylinder diameter below the stepped portion 12a.
is in communication with the internal space of the combustion tank 5. Further, a suction device 20 is disposed on the upper wall of the combustion tank 5. Suction is performed by rotating a fan using a motor.

The oil inlet 56 of the combustion tank 5 to which the fuel tank 60 is attached is designed to prevent combustion flames from rising due to thermal expansion of the air in the tank 5 and increase in internal pressure during combustion in the kerosene stove. , a communication hole 52 is provided that communicates the internal space within the combustion tank 5 with the atmosphere. The communication hole 52 is located above the oil level 5a during the combustion operation, so that the internal space of the combustion tank 5 communicates with the atmosphere, and during the extinguishing operation, the lowered wick causes the oil level to rise and the communication hole 52 is closed, and the combustion tank 5 is in a sealed state except for the part communicating with the wick guide path 11. When the suction device 20 operates at this time, the air in the internal space of the combustion tank 5 is sucked out and the internal space of the combustion tank 5 becomes negative pressure, which inevitably causes the wick guide path 11 to communicate with the internal space of the combustion tank 5. Through the wick 13, incompletely combusted gas generated from the upper end of the wick 13 is also sucked in.

[0005]

[Problems to be Solved by the Invention] However, in the suction device of such an odor reduction device, incompletely combusted gas is sucked in as well as unburned gas. It is designed to be discharged. Therefore, although the pungent odor is eliminated, the fuel vapor itself is emitted, and the amount thereof is quite large, so the fuel odor itself becomes very strong, which is a disadvantage.

[0006] Therefore, an object of the present invention is to provide an odor reduction device that further deodorizes the vaporized components sucked in by the suction device of the odor reduction device and realizes a completely odor-free liquid fuel combustion equipment. be.

[0007]

[Means for Solving the Problems] The present invention provides an odor in liquid fuel combustion equipment that is equipped with a suction device that communicates with a combustion tank and sucks out vaporized components generated from a wick during extinguishing operations and discharges them into a supply tank storage section. In the reduction device, a secondary combustion device and an oxidation catalyst are provided in the vicinity of the combustion cylinder of the liquid fuel combustion device, and a pipe is further connected to the discharge port of the suction device to connect the secondary combustion device and the oxidation catalyst. It is characterized by being provided with a conduit for vaporized components.

[0008]

[Operation] In the odor reduction device for liquid fuel combustion equipment according to the present invention, the vaporized components generated from the wick sucked by the suction device during extinguishing operation are combusted through the vaporized component conduit piped to the discharge port of the suction device. It is guided to a secondary combustion device and an oxidation catalyst located near the cylinder. The vaporized components are mixed with air again and burned in the secondary combustion device heated by the combustion tube, and further purified and deodorized by the oxidation catalyst activated by heating, and then discharged.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram of an odor reduction device for a kerosene stove, which is an embodiment of the present invention. Since the kerosene stove and suction device are the same as the conventional ones, the same parts will be given the same numbers and the explanation will be omitted.

[0010] The odor reduction device 2 includes a fan 23 and a motor 2.
A vaporized component conduit 24 is connected to an exhaust port 21 of a suction device 20 consisting of a suction device 2, etc. It is connected to a secondary combustion device 26 and an oxidation catalyst 28 near the combustion tube 1. An endothermic fan 25 is disposed in front of the secondary combustion device 26 in the vaporized component conduit 24. A heater 27 is provided at the bottom of the secondary combustion device 26, and is energized in conjunction with a fire extinguishing lever (not shown) of the kerosene stove and the motor 22 of the suction device 20.

During fire extinguishing operation, when the wick 13 is lowered into the fuel tank 5, the oil level rises by the volume of the wick 13, the communication hole 52 is closed, and the combustion tank 5 is sealed. At this time, the suction device 20 starts rotating the motor 22 and the fan 23
When the internal space of the combustion tank 5 is suctioned, air is sucked out and the internal space of the combustion tank 5 becomes a negative pressure, and the upper end of the wick 13 inevitably passes through the wick guide path 11 communicating with the internal space of the combustion tank 5. The incompletely combusted gas generated from the combustion chamber also attracts unburned gas (arrow c). The sucked incompletely burned gas and unburned gas are guided from the exhaust port 21 to the secondary combustion device 26 through the vaporized component conduit 24 (arrow d). The secondary combustion device 26 absorbs residual heat from the combustion tube 1 by the heat absorption fan 25 disposed in front thereof, and the gas inside the vaporized component conduit 24 is heated and reaches the secondary combustion device 26. The operation of the heat absorption fan 25 and the energization of the heater 27 of the secondary combustion device 26 are performed almost simultaneously with the operation of the motor 22 of the suction device 20 during fire extinguishing operation. Secondary combustion device 2
At 6, the gas is mixed with air again and combusted. Air flows in as shown by arrow b. Thereafter, the reburned gas containing unburned gas is further guided to the oxidation catalyst 28, purified and deodorized, and discharged (arrow a).

[0012] With the above configuration, various combustion methods such as Bunsen type and catalytic combustion type can be used for the secondary combustion device. Further, the shape of the oxidation catalyst can be various, such as a cross shape or a honeycomb shape.

[0013] The heat absorption fan is used to efficiently guide the residual heat from the combustion tube to the vaporized component conduit, which can improve the combustion effect and activate the catalyst, but other methods can also be used to efficiently conduct the residual heat. It doesn't matter if you use it well.

The flow path for the vaporized components exhausted from the suction device is not limited to this embodiment, and similar effects can be obtained by using an oxidation catalyst or a secondary combustion device.

[0015]

As described above, according to the present invention, in the odor reduction device for liquid fuel combustion equipment, the vaporized components generated from the wick sucked during the extinguishing operation by the suction device are further transferred to the secondary source through the vaporized component conduit. Since it is burned in a combustion device and purified by an oxidation catalyst, the unburned gas and unburned gas are almost completely odorless and emitted. Furthermore, it is purified and deodorized by an oxidation catalyst activated by heating, and then discharged.

[0016] Therefore, by equipping a liquid fuel burning appliance such as a kerosene stove with the odor reduction device of the present invention, the liquid fuel burning appliance can be made odorless when extinguishing a fire.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an odor reduction device for a kerosene stove, which is an embodiment of the present invention.

FIG. 2 is a schematic diagram of the vicinity of an odor reduction device of a conventional kerosene stove.

[Explanation of symbols]

1 Combustion tube 2 Odor reduction device 20 Suction device 21 Exhaust port 24 Conduit for vaporized components 26 Secondary combustion device 28 Oxidation catalyst

Claims (1)

[Claims] 1. An odor reduction device for liquid fuel combustion equipment, comprising a suction device that communicates with a combustion tank and sucks vaporized components generated from a wick during extinguishing operation and discharges them into a supply tank housing section, wherein the liquid fuel combustion A secondary combustion device and an oxidation catalyst are provided near the combustion tube of the device, and a vaporized component conduit is further provided which is piped from the discharge port of the suction device and connects the secondary combustion device and the oxidation catalyst. An odor reduction device for liquid fuel combustion equipment characterized by: