JPH07243614A - Deodorizing apparatus for pot type oil burning appliance - Google Patents

Abstract

PURPOSE:To prevent bad odor from being produced upon extinction by supplying power to an ignition heater upon ordinary burning where blue flame burning is performed at the side of a blue flame cap, and continuously performing the burning at the lower part of the blue flame cap for a predetermined time to burn tar existent in the vicinity of a fuel pipe. CONSTITUTION:A burning flame in a pot 1 during ordinary burning is located from the side of a blue flame cap 2 to the upper portion of the same. Once power is supplied to an iginition heater 5 upon the ordinary burning, combustible gas in the vicinity of the high temperature ignition heater 5 is started. Produced heat promotes thermal decomposition of the combutible gas to further promote the burning, and hence the burning is continued at the lower part of the blue flame cap 2 even upon the ordinary burning to raise environmental temperature to 500 to 60 deg.C. For this, burning of tar existent in the vicinity of the fuel pipe 4 is promoted owing to high temperature, and hence strongly adhered tar can completely be burned for about 20 minutes to 1 hour for example. Thus, bad odor produced upon extinction is removed to prevent bad odor from being produced thereafter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a foul odor generated when a pot type oil combustor is extinguished.

[0002]

2. Description of the Related Art Fuel is supplied to a pot having a large number of air holes on its side wall, and combustion air is supplied from the air hole on the side wall.
BACKGROUND ART A pot-type oil combustor is known in which fuel is ignited in a pot by the ignition type of an ignition heater to perform combustion. When the combustion is started, the generated heat continues the ignition and combustion until the temperature of the pot and the auxiliary device reaches a stable combustion even at a large or small flow rate different from the fuel flow rate at the time of ignition, and then at room temperature. It normally burns at a fuel flow rate that is commensurate or specified by the operator.

In order to stabilize the combustion in the pot, there are a plurality of stages of combustion rings arranged on the side wall of the pot and a disc-shaped blue flame cap arranged in the upper center of the pot.

[0004]

By the way, since the fuel supplied into the pot is sent in a liquid state and burns while being vaporized by the heat of combustion, the fuel is the first to burn a component that is easily vaporized. However, high molecular weight components are difficult to vaporize, and tar and carbon may be deposited as fuel residue.

In the pot type combustor, tar or carbon may be deposited in the pot at the time of ignition or when it burns for a long time at a specific combustion amount. And since the bottom of most of the pot maintains a high temperature of 300 to 400 ° C during normal combustion, the accumulated tar and carbon can also be burned, and most of the pot is in a clean state. I can keep it. However, around the fuel pipe, heat is used to vaporize the fuel and it is difficult for the temperature to rise to a high temperature, and tar and carbon may continue to adhere, and if tar and carbon adhered when the fire was extinguished, it was supplied from the fuel pipe. Since the fuel soaks into tar and carbon, it vaporizes and burns, and after extinguishing, the soaked fuel vaporizes and produces a foul odor.

[0006]

The present invention relates to an oil combustor for automatically eliminating the cause of a bad odor generated after extinguishing a fire before it becomes severe. A disc-shaped blue flame cap 2 is provided on the side of the blue flame cap 2. A large number of air holes 1a are formed in the side wall of the pot 1 from the side of the blue flame cap 2 and the blue flame is burned on the side of the blue flame cap 2. In the vessel, a fuel pipe 4 connected to the fuel control means 3 is connected to the pot 1, and an ignition heater 5 is attached in the pot 1 to ignite the fuel by the ignition heater 5 which glows red and the side of the blue flame cap 2 side. During normal combustion in which the blue flame is burnt, the ignition heater 5 is energized, and the tar near the fuel pipe 4 is burned by continuing to burn even under the blue flame cap 2 for a certain period of time.

Further, during the normal combustion in which the ignition heater 5 is energized in this deodorization operation mode, if the normal combustion is performed immediately after the ignition combustion, it is not necessary to ventilate the indoor air immediately after the ignition, and the flame detecting means 6 etc. It will be possible to combine with the system that detects poor ventilation from the state of flame using.

Further, the pot 1 is provided with a flame detecting means 6 for detecting a combustion flame, and a fire extinguishing time detecting means 7 for measuring from a fire extinguishing operation to the generation of a flame extinguishing signal of the flame detecting means 6 for extinguishing the fire for a predetermined time. If the ignition heater 5 is energized at the time of the normal combustion next time, the operator does not operate it at all, and it can be used in a state where there is no odor when extinguishing the fire.

[0009]

In the petroleum combustor of the present invention, the blue flame cap 2 is provided, and a large number of air holes 1a are provided in the side wall of the pot 1 on the side of the blue flame cap 2. Therefore, the combustion in the pot 1 is mainly performed by the blue flame cap. 2 from the side up, heating the blue flame cap 2 to a high temperature. Then, the bottom surface of the pot 1 is heated by the radiant heat generated from the blue flame cap 2, and the sent fuel is vaporized and burned.

By the way, since the fuel supplied to the pot 1 has a low temperature, and heat is required to vaporize the fuel, the temperature in the vicinity of the mounting portion of the fuel pipe 4 is unlikely to rise, and tar or carbon may be generated. There is.

According to the present invention, the ignition heater 5 is energized during the normal combustion of the pot type oil combustor. Normally, the ignition heater 5 is not energized and there is no ignition source. Although there is hardly any, by energizing the ignition heater 5, combustion in the lower part of the blue flame cap 2 is promoted, and the temperature in the pot 1 rises. For this reason, the temperature becomes high even in the vicinity of the connecting portion of the fuel pipe 4 which has been low in the related art, and the tar and carbon adhering to the bottom surface of the fuel pipe 4 and the pot 1 are burned due to the high temperature and disappear. It is a thing.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the drawings. 1 is a cylindrical pot with a bottom, 1a is a large number of air holes provided in the side wall of the pot 1, and 2 is a blue located at the upper center of the pot 1. It is a flame cap, and the air holes 1a are blue flame caps 2.
It is arranged so that the upper side increases from the side.

Reference numeral 8 is an air flow rate control means composed of a blower fan, 9 is an air passage through which the combustion air controlled by the air flow rate control means 8 is sent, and the pot 1 is installed in the air passage 9. The air sent to the air passage 9 is supplied into the pot 1 through the air holes 1a and used for combustion.

3 is a fuel control means composed of an electromagnetic pump,
Reference numeral 4 is a fuel pipe for supplying the fuel controlled by the fuel control means 3 to the pot 1. The fuel in the oil tank 10 is controlled by the fuel control means 3 and is supplied into the pot 1 by the fuel pipe 4. .

Reference numeral 5 is an ignition heater looking into the pot 1.
Reference numeral 11 is an ignition means provided in the control section of the oil combustor, 11a is an ignition switch for sending an activation signal to the ignition means 11, and when the ignition means 11 receives the activation signal, the burner controller 12 energizes the ignition heater 5. Further, the fuel / air amount suitable for ignition is supplied to the pot 1 by the fuel control means 3 and the blower control means 8 to start combustion.

The temperature of the pot 1 rises due to the heat of combustion and the heat of the ignition heater 5. The temperature of the pot 1 continues to rise due to the heat of combustion even when the power supply to the ignition heater 5 is stopped. Move to combustion. The transition timing to normal combustion is switched by the output signal of the timer that counts from the temperature detection and ignition operation of a specific part, and the normal combustion is the combustion amount set by the operator or the room temperature detection not shown. The burner controller 12 controls the fuel control means 3 and the blow control means 8 so that the combustion amount determined by the means is obtained.

Reference numeral 6 is a flame detecting means provided in the control section of the oil combustor, 6a is a flame detecting electrode looking into the pot 1, and when a high voltage AC power supply is supplied between the pot 1 and the flame detecting electrode, When flame is present, a DC flame current can be taken out by rectification, and presence / absence of flame can be detected by the presence or absence of this DC. Further, since the intensity of the flame current represents the state of the flame, it is possible to detect the time when the oxygen in the room is consumed and the oxygen is reduced, and issue a ventilation alarm.

Reference numeral 13 is a temperature detecting element attached to the outside of the bottom surface of the pot 1. In the pot type oil combustor, the temperature of the pot 1 drops during normal combustion with reduced oxygen. According to the above, the ventilation warning can be issued similarly to the flame detecting means 6.

Reference numeral 14 is a fire extinguishing means provided in the control unit of the oil combustor, 14a is a fire extinguishing switch for sending a start signal to the fire extinguishing means 14, and even if the fire extinguishing switch 14a is constituted by an independent switch, the ignition switch 11a is provided. You may comprise with the changeover switch combined with and integrated. When the fire extinguishing means 14 operates, the burner controller 12 sends a stop signal to the fuel control means 3 and continues to send the air blowing signal to the air blowing control means 8 for a while even after confirming the fire extinguishing by the flame detecting means 6, and then blows air to the pot 1. To stop.

In the pot type oil combustor as described above, according to the present invention, the control section of the oil combustor is provided with the deodorant operation control means 15 having a latch circuit. When one of the deodorant switches 15a is pressed, this start signal is latched, and the burner controller 12 is operated during normal combustion of the oil combustor to energize the ignition heater 5, which is unnecessary for normal combustion.

The combustion flame in the pot 1 during normal combustion is located above the side portion of the blue flame cap 2, and in the lower portion of the blue flame cap 2, the air sent from the air hole 1a is small and supplied. Even if a combustion flame is generated by the oxygen in the air and combustion heat is generated, this combustion heat is used for vaporization of the fuel and thermal decomposition into combustible gas of low molecular weight, and the temperature inside the pot 1 is kept low. The blue flame cap 2 does not spread to the entire lower part of the flame cap 2.

When the ignition heater 5 is energized during such normal combustion, the combustible gas in the vicinity of the high-temperature ignition heater 5 starts to combust, and the generated heat promotes thermal decomposition of the combustible gas to further promote combustion. The combustion continues under the blue flame cap 2 even during normal combustion, and the ambient temperature is 500 ° C.
The temperature is raised to ~ 600 ° C. Therefore, the fuel pipe 4
Combustion of tar in the vicinity is accelerated by high temperature, 20 minutes to 1
Even if the tar adheres firmly in time, it can be completely burned.

The lower part of the blue flame cap 2 can be burned even when the fuel / air amount is unbalanced and burned, but in such burning, a large amount of incomplete combustion gas is generated. According to the configuration of the present invention, the combustion / air amount balance is normal, and therefore, the combustion flame is always completely burned even though the position where the combustion flame is formed changes, and it can be used for an indoor exhaust type combustor.

If the structure for connecting the pot 1 and the fuel pipe 4 is such that the tip of the fuel pipe 4 projects slightly into the pot 1 to supply the fuel dropwise, the fuel pipe 4 is well adapted to the ambient temperature. Even though the burning time under the blue flame cap 2 is short, the combustion pipe 4 and the pot 1 near the fuel dropping part
It became possible to reliably burn the tar attached to the.

On the other hand, the ignition heater 5 which is energized to start the combustion of the lower part of the blue flame cap 2 does not require a large amount of heat generation as at the time of ignition, and the amount of electricity supplied is limited to generate a low amount of heat generation. Can also achieve the purpose, when the ignition heater 5 and a fixed resistor are connected in series when energizing during normal combustion,
The maximum surface temperature of the ignition heater 5 becomes too high, and there is no trouble of disconnection, and the durability is improved.

If the combustion of the lower portion of the blue flame cap 2 is promoted during normal combustion, the amount of combustion in the lateral portions of the blue flame cap 2 will be reduced, and the state of the combustion flame will change significantly. It is known that the position of the combustion flame and the state of the combustion flame such as the size of the flame change under the influence of the oxygen concentration in the combustion air, and the flame detection means 6 issues a ventilation alarm. Is used for. Further, the bottom surface temperature of the pot 1 during normal combustion also changes under the influence of the oxygen concentration in the combustion air.

As described above, the combustion state at the time of normal combustion is used as a detected object for indirectly knowing the oxygen concentration without using an oxygen sensor, and the ignition heater 5 is energized to change the combustion state. This means that it becomes impossible to measure the oxygen concentration in the combustion air.

The present invention specifies the normal combustion immediately after ignition during the normal combustion when the ignition heater 5 is energized. To further increase the certainty, the ignition operation is performed after the combustor is not used for a certain period of time. Then, the ignition heater 5 is energized by specifying the normal combustion immediately after the ignition combustion.

Generally, a room in which a combustor for exhausting air to the room is used has a door for people to enter and exit, and the ventilation rate of such a room is about 0.5 to 0.8, which is 2 even in the worst condition.
It means that all the air changes in time. Therefore, in normal use, the ventilation alarm is rarely issued immediately after the ignition operation, and no trouble occurs even if the deodorizing device is operated during normal combustion at this time.

If the ignition heater 5 is energized during normal combustion and the amount of combustion is switched to small combustion at the same time, a small amount of fuel will pass through the fuel pipe 4.
Also, the temperature of the peripheral edge rises faster, and even if the burning time under the blue flame cap 2 is short, the tar can be burned reliably. However, since it is not preferable to forcibly switch to the small combustion and perform the deodorant operation during the normal combustion that requires a large combustion amount, the normal combustion occurs when the activation signal of the deodorant operation control means 15 is latched. If the ignition heater 5 is energized when the combustion amount becomes small, the handling mode is improved because the operation mode of the oil combustor does not change significantly.

When the amount of combustion is small as described above, the amount of oxygen in the room air used is small and the need for ventilation is delayed, so a ventilation alarm is issued after the energization of the ignition heater 5 is completed. However, it does not pose any problem.

As a deodorizing device, a signal for energizing the ignition heater 5 is provided with a deodorizing switch 15a so that the operator can operate the odor at any time when the odor becomes strong. Can be eliminated.

Further, according to the present invention, the signal of the flame detecting means 6 is used to automatically perform the deodorizing operation before the operator notices that the odor becomes strong at the time of extinguishing the fire. Reference numeral 7 indicates the flame detecting means 6. A fire extinguishing time detecting means for inputting a fire extinguishing signal and a fire extinguishing operation signal of the fire extinguishing means 14. The fire extinguishing time detecting means 7 is provided with a comparison circuit, and the time from the fire extinguishing operation to the extinction becomes longer than a certain time. At times, it is determined that tar and carbon are accumulated, and a start signal is sent to the deodorant operation control means 15.

Therefore, the pot type oil combustor was deodorized during the next use, and the tar and carbon accumulated in the fuel pipe 4 and the pot 1 were burned to prevent the generation of odor during extinguishing. .

[0035]

As described above, according to the present invention, when the odor at the time of fire extinguishing becomes strong, the ignition heater 5 is energized during normal combustion to burn tar and carbon, so that the odor generated at the time of extinguishing is removed. It was possible to stop the generation of odor from the subsequent use.

In this deodorizing operation, the ignition heater 5 is energized during normal combustion to change the combustion state, and the ventilation alarm device is mainly deactivated, but this deodorizing operation is performed immediately after ignition combustion. Since it is normally performed during combustion, at this time, the ventilation alarm does not operate, and the safety problem does not occur particularly.

Further, since the deodorizing operation is automatically performed by utilizing the flame detecting means 6 of the pot 1, the operator does not notice the odor at the time of extinguishing the fire and can use it comfortably without any operation. It has become.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a pot-type oil combustor equipped with an odor control device according to the present invention.

FIG. 2 is a block diagram of the deodorizing device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 pot 1a air hole 2 blue flame cap 3 fuel control means 4 fuel pipe 5 ignition heater 6 flame detection means 7 extinguishing time detection means

Claims (3)

[Claims] 1. A disk-shaped blue flame cap 2 is provided at the upper center of a bottomed cylindrical pot 1, and a large number of air holes 1a are formed in the side wall of the pot 1 above the side of the blue flame cap 2 to form a blue flame. In a pot type oil combustor in which a blue flame burns on the side of the flame cap 2, a fuel pipe 4 connected to the fuel control means 3 is connected to the pot 1, and an ignition heater 5 is installed in the pot 1 to ignite red heat. The fuel is ignited by the heater 5, and the ignition heater 5 is energized at the time of normal combustion where the blue flame is burned on the side of the blue flame cap 2 and the combustion is continued for a certain period of time even under the blue flame cap 2 to keep the fuel near the fuel pipe 4. Deodorizer for pot type oil combustor that burns tar 2. The deodorizing device for a pot type petroleum combustor according to claim 1, wherein the normal combustion immediately after ignition combustion is performed during normal combustion when the ignition heater 5 is energized. 3. The pot 1 is provided with a flame detecting means 6 for detecting a combustion flame, and a fire extinguishing time detecting means 7 for measuring from a fire extinguishing operation to the generation of a flame extinguishing signal of the flame detecting means 6, the extinguishing time being a fixed time. 3. The deodorizing device for a pot type petroleum combustor according to claim 1 or claim 2, wherein the ignition heater 5 is energized at the time of normal combustion next time.