JP2011133118A - Waste oil combustion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform efficient combustion by using waste oil as a fuel in a stable state without needing an auxiliary fuel, with a compact and simple structure. <P>SOLUTION: A waste oil combustion section 5 having a heat chamber body 11 in which a waste oil combustion spatial section 12 is defined by closing a combustion/exhaust port 22, is assembled on a combustion/exhaust base 20 having the box-shape as a whole in which a combustion/exhaust spatial section 21 is defined inside, and which has the combustion/exhaust port 22 and an exhaust port 23, and further has a fire hole 27 for fitting and inserting a waste oil injection nozzle 30, and an exhaust section 6 closing the exhaust port 23 and having a sound-deadening cylindrical body 16 and a chimney body 17, is combined. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a waste oil combustion apparatus using, as a fuel, waste oil such as tempura oil and engine oil, which are hardly combustible liquids.

  In recent years, regulations on industrial waste have been strengthened, and processing costs are required to dispose of animal waste such as beef tallow, vegetable oil such as soybean oil, or mineral waste oil such as lubricating oil, insulating oil, and engine oil. It has become. Therefore, it has been studied to use waste oil as fuel for combustion devices such as boilers and burners.

  However, taking soybean oil, which is a vegetable waste oil, as an example, there is a problem that its ignition point temperature is high and combustion efficiency is poor because there are many impurities contained in this waste oil. In such a combustion apparatus using waste oil as a fuel, there is a problem that waste oil of fuel causes incomplete combustion and a large amount of smoke is generated, and hard carbon sludge adheres to the inside of the combustion chamber.

  Therefore, a waste oil combustion apparatus has been proposed in which waste oil is used as fuel and efficient combustion is performed (see, for example, Patent Document 1). The applicant also provided a waste oil stove in which kerosene was mixed with waste oil as a main fuel to improve combustibility (Patent Document 2).

  The waste oil combustion apparatus described in Patent Document 1 drops fuel waste oil from the upper part of a combustion furnace, and uses combustion heat generated by combustion so that the dropped fuel is heated to a temperature at which it is burned. The combustion efficiency is improved. In such a waste oil combustion apparatus, the generation of incomplete combustion is suppressed by mixing the waste oil of fuel with sufficient air and extending the combustion time. Specifically, the waste oil combustion apparatus performs the above-described operation by separating the combustion furnace and the fuel dropping port by a predetermined distance.

  However, since the waste oil combustion apparatus has a configuration in which the combustion furnace and the fuel dropping port are separated from each other in order to lengthen the combustion time as described above, there is a problem that the apparatus becomes large. In addition, since the waste oil combustion apparatus is provided with a crater at the lower part of the combustion furnace, and the flame from the crater is changed to a horizontal flame by way of the duct, the height of the entire apparatus is increased by this duct, and the apparatus further There has been a problem of increasing the size.

JP 2005-188899 A Japanese Patent No. 4317785

  The applicant has developed a waste oil combustion apparatus that solves the above-described problems of the conventional apparatus and is small in size and improves combustion efficiency. The applicant mixes kerosene as auxiliary fuel with the waste oil of the main fuel and injects it into the combustion space, and supplies the kerosene at the start of combustion when the temperature in the combustion space is low or when the combustion state decreases. We have developed a waste oil combustion system that reduces the amount of kerosene supplied and improves combustion efficiency.

  However, such a waste oil combustion apparatus also has a problem of running costs due to the use of kerosene as an auxiliary fuel, and is increased in size due to the installation of a kerosene tank, a supply pipe, a switching valve, or the like. Further, in such a waste oil combustion apparatus, a so-called combustion pulsation that temporarily becomes a high combustion state is generated by supplying kerosene during combustion, and this combustion pulsation extinguishes the fire or explosive ignition at the time of re-ignition. There was also a risk of occurrence.

  As a result of further intensive studies to solve the problems of the above-described waste oil combustion apparatus, the applicant has made it possible to stably and efficiently burn ignitability or waste oil while eliminating the need to supply kerosene as an auxiliary fuel. We have developed a small-sized and simple structure waste oil combustion device that has been improved. The waste oil combustion apparatus is improved in operability, and can be used for a high heating efficiency stove, a heater, or the like, and is versatile.

  A waste oil combustion apparatus according to the present invention that achieves the above-described object includes a waste oil combustion section having a combustion cylinder and a swirl flow generating means, an exhaust section having a silencer cylinder and a chimney, and the waste oil combustion section and the exhaust section. Adjacently mounted duct section having combustion / exhaust base, waste oil tank, waste oil injection nozzle, waste oil supply section having waste oil pump, air supply section having blower and primary air supply pipe, waste oil combustion section and exhaust section And a base for mounting a waste oil supply unit and an air supply unit.

  The waste oil combustion device has a cylindrical shape in which a combustion cylinder of a waste oil combustion part has a ceiling part and forms a combustion space part of waste oil inside, and an attachment flange part is integrally formed on the outer peripheral wall on the lower end side. Formed. In the waste oil combustion apparatus, the swirl flow generating means provided in the waste oil combustion section is provided on the inner peripheral wall of the combustion cylinder, and generates a swirl flow of flame and combustion gas in the combustion space.

  In the waste oil combustion apparatus, the sound deadening cylinder of the exhaust part constitutes an exhaust gas flow path penetrating in the length direction inside, and the whole is formed in a cylindrical shape. The silencer cylinders are formed with a plurality of silencer dampers that regulate the flow of exhaust gas by alternately arranging the silencer bodies in the height direction at different positions relative to the circumferential direction on the inner peripheral wall. In the waste oil combustion apparatus, the chimney of the exhaust part is attached to and detached from the upper part of the silencer cylinder to exhaust the exhaust gas to the outside.

  In the waste oil combustion device, the waste oil supply unit has a waste oil tank, a waste oil pump, and a waste oil injection nozzle provided at the tip of a waste oil waste oil supply pipe connected to the waste oil pump, and the waste oil pumped from the waste oil tank by the waste oil pump Is injected from the waste oil injection nozzle into the combustion space of the combustion cylinder in a mist state.

  In the waste oil combustion device, the air supply unit is connected to the waste oil supply pipe at the other end of the primary air supply pipe connected at one end to the blower, and the waste oil is burned in a mist state from the waste oil injection nozzle to the waste oil supply pipe. Compressed air that provides an injection pressure to be injected into the unit is supplied.

  In the waste oil combustion device, the combustion / exhaust stand of the duct part forms a combustion / exhaust space part inside and is formed into a box shape, and the combustion part assembly in which the combustion cylinder is detachably assembled in one area of the upper surface part A waste oil combustion section and an exhaust section are mounted next to each other as an exhaust section assembly area in which the other area of the upper surface portion is detachably assembled with the silencer cylinder. The combustion / exhaust base forms a combustion / exhaust port on the upper surface portion that communicates with the internal combustion / exhaust space and the combustion space of the combustion cylinder in a state where the combustion cylinder is assembled in the combustion section assembly region. The combustion / exhaust base forms an exhaust port in the upper surface portion, which communicates with the internal combustion / exhaust space and the exhaust gas flow path in a state where the silencer cylinder is detachably assembled in the exhaust assembly area. In the combustion / exhaust stand, an ignition port that is opened and closed by a door is formed on a side portion corresponding to the assembly area of the combustion unit, and a fire type material in which, for example, a ceramic fiber bundle is impregnated with kerosene is input from the ignition port. So that The combustion / exhaust stand is formed at the bottom surface with a scoring port that faces the combustion space portion of the combustion cylinder through the combustion / exhaust port, with the waste oil injection nozzle located at a position corresponding to the combustion unit assembly region. A secondary air supply port is formed at a position corresponding to the region and facing the muffler cylinder through the combustion / exhaust space.

  In the waste oil combustion apparatus, an ignition operation is performed in which a spark material is introduced from an ignition port into the combustion / exhaust space of the combustion / exhaust stand and the impregnated kerosene is combusted by an appropriate ignition means. In the waste oil combustion device, the waste oil tank is opened, waste oil is supplied to the waste oil injection nozzle at the tip through the waste oil supply pipe, and the blower start-up operation and the primary air supply pipe opening operation are performed. By being performed, the compressed oil is supplied from the primary air supply pipe to the waste oil injection nozzle, and the waste oil to which the injection pressure is applied is injected in a mist state into the combustion space from the waste oil injection nozzle facing the nozzle. In the waste oil combustion apparatus, the combustion of kerosene, which is a fire material, heats the waste oil that has been in a mist state and improved in ignitability, and starts combustion in the combustion space of the combustion cylinder.

  In the waste oil combustion apparatus, the flame and the combustion gas generated in the combustion cylinder due to the combustion of the waste oil and the injection of the waste oil from the waste oil injection nozzle strike the swirl flow generating means to generate a swirl flow inside. In the waste oil combustion apparatus, the swirl flow efficiently stirs the waste oil mist, air, flame, and combustion gas in the combustion cylinder, and the waste oil burns efficiently without causing incomplete combustion. In the waste oil combustion apparatus, it is possible to burn the waste oil with a slight amount of kerosene impregnated in the fire material, and the combustion of the waste oil is continuously performed in the combustion cylinder even if the kerosene runs out.

  In the waste oil combustion apparatus, the flame and the combustion gas swirling in the combustion cylinder flow into the combustion / exhaust space through the combustion / exhaust port of the combustion / exhaust stand. In the waste oil combustion apparatus, secondary air is blown from the outside through the secondary air supply port into the combustion / exhaust stage combustion / exhaust space portion that has become negative pressure due to the flow of exhaust gas. In the waste oil combustion apparatus, secondary air is blown into a combustion / exhaust space portion by blowing secondary air into a flame or combustion gas containing unburned substances, so that exhaust gas is generated.

  In the waste oil combustion apparatus, the blown secondary air flows into the silencer cylinder of the exhaust part vigorously, so that in the combustion / exhaust space part of the combustion / exhaust stand, the exhaust part assembly area with respect to the combustion part assembly area side The side is in a negative pressure state. In the waste oil combustion apparatus, this further promotes the swirling of the flame and the combustion gas in the combustion cylinder, thereby improving the combustion efficiency.

  In the waste oil combustion apparatus, a mixed gas of exhaust gas and secondary air flows vigorously into the silencer cylinder and flows while striking against each damper provided on the inner wall of the exhaust gas flow path, whereby the flow direction and flow velocity are regulated. In the waste oil combustion apparatus, the flow velocity sound of the exhaust gas is thereby silenced and released to the outside through the chimney.

  The waste oil combustion apparatus according to the present invention is a combustion cylinder having a ceiling portion and a combustion space portion inside a duct portion having a box-like combustion / exhaust base in which a combustion / exhaust space portion is formed. A waste oil combustion section having an exhaust section having a muffler body and a chimney body are installed next to each other, and the waste oil supplied from the waste oil supply section is mixed with the air supplied from the air supply section, and the combustion cylinder is formed by a waste oil injection nozzle. Injected and burned in a mist state into the combustion space of the combustion chamber, the flame and the combustion gas flow from the bottom of the combustion cylinder into the combustion / exhaust space of the combustion / exhaust stand, and through the combustion / exhaust space The exhaust gas is discharged from the exhaust gas. According to the present invention, it is not necessary to supply kerosene as auxiliary fuel, and the waste oil injected in the mist state in the waste oil combustion section is supplied with sufficient air and burned with a swirl flow efficiently. Combustion results in incomplete combustion, resulting in the generation of carbon sludge and stable combustion without combustion pulsation resulting from the supply of auxiliary fuel kerosene. Further, according to the present invention, the structure can be simplified and miniaturized, the operability and the maintenance can be improved, and the running cost can be reduced. According to the present invention, versatility can be achieved by lowering the temperature of exhaust gas, utilizing the region between the waste oil combustion section configured in the combustion / exhaust stand and the exhaust section, and the like.

It is a perspective view from the front side of the waste oil stove shown as embodiment of the waste oil combustion apparatus which concerns on this invention. It is a perspective view from the back side of the waste oil stove. It is a cross-sectional perspective view of the waste oil stove. It is a cross-sectional perspective view which shows the structure of the waste oil combustion part and exhaust part which were mounted in the duct part of the waste oil stove. It is a principal part perspective view which shows the arrangement position of the waste oil injection nozzle in the waste oil stove. It is explanatory drawing of the ignition operation in the waste oil stove. It is a principal part perspective view from the front side of the waste oil stove shown as embodiment of the other waste oil combustion apparatus which concerns on this invention.

  Hereinafter, a waste oil stove 1 shown in the drawings as an embodiment of a waste oil combustion apparatus according to the present invention will be described in detail. The waste oil stove 1 can use various waste oils such as tempura oil that comes from homes, etc., cutting oil that comes from factories, etc., lubricating oil, insulating oil, or engine oil as an unrefined state. As shown in FIGS. 1 and 2, the waste oil stove 1 can be moved to an appropriate place by being mounted on a base 3 having casters 2 with stoppers attached to the four corners. The waste oil stove 1 has a base 4 made of a metal plate as a support substrate mounted on a base 3, and a waste oil combustion part 5, an exhaust part 6, a duct part 7, a waste oil, which will be described in detail later, on the base 4. The supply unit 8 and the air supply unit 9 are assembled.

  In the waste oil stove 1, the base 4 is divided into two regions 4L and 4R on the left and right by the partition member 10, and the duct portion 7 on which the waste oil combustion unit 5 and the exhaust unit 6 are mounted is mounted on the region 4R side, and the region 4L A waste oil supply unit 8 and an air supply unit 9 are mounted on the side. In the waste oil stove 1, the partition member 10 is formed of, for example, a non-combustible material such as a steel plate, and safety is achieved by partitioning the portion of the combustion / exhaust portion that becomes high temperature and the waste oil supply portion 8.

  The waste oil combustion section 5 includes a combustion cylinder 11 that forms a combustion space section 12 in which waste oil is burned. As will be described later, the combustion cylinder 11 is heated to high temperature by efficiently burning the waste oil in the combustion space portion 12, and is thus formed into an overall cylindrical shape using, for example, a heat-resistant stainless steel material. The combustion cylinder 11 has a ceiling portion 11A and is opened at the bottom, and an attachment flange portion 11B is integrally formed on the outer peripheral portion on the bottom side. As shown in FIGS. 3 and 4, the combustion cylinder 11 is provided with a large number of fins 13 constituting the swirl flow generating means on the inner peripheral wall and a punching plate 14 on the inner surface of the ceiling portion 11A.

  The details of the combustion cylinder 11 are omitted in the mounting flange portion 11B, but a plurality of mounting holes are formed in the circumferential direction, and the mounting screws of the clamping mechanism 15 whose details are omitted are tightened in the mounting holes. Is fixed to the upper surface portion of the duct portion 7. The combustion cylinder 11 is removed from the duct portion 7 by loosening the mounting screw of the clamping mechanism 15. By making the combustion cylinder 11 detachable with respect to the duct portion 7 in this manner, the combustion space portion 12 can be easily cleaned and the maintainability is improved. The combustion cylinder 11 can be attached to and detached from the duct portion 7 by an appropriate attachment / detachment mechanism.

  As shown in FIGS. 3 and 4, the waste oil combustion unit 5 is provided on the inner peripheral wall upper portion of the combustion cylinder 11 with a plurality of fins 13 arranged in the circumferential direction at different heights. The fins 13 are provided on the inner peripheral wall of the combustion cylinder 11 in a state where each of the fins is inclined to the right, for example, and when the combustion gas of the waste oil burned in the combustion space portion 12 hits as described later, the fins 13 follow the respective inclinations. The flow is changed so that a clockwise swirling flow is generated in the combustion space 12 as indicated by an arrow in FIG. The waste oil combustion unit 5 efficiently stirs the waste oil mist, air, flame, and combustion gas in the combustion space 12 by the swirl flow generated by the fins 13 in this way, and causes incomplete combustion of the waste oil. It burns efficiently without any problems.

  As shown in FIGS. 3 and 4, the waste oil combustion unit 5 is provided with a punching plate 14 on the inner surface of the ceiling portion 11 </ b> A of the combustion cylinder 11. The punching plate 14 is a disk-like member formed with, for example, a heat resistant stainless steel plate or the like so as to have a diameter substantially the same as the inner diameter of the combustion cylinder 11, and a large number of through holes are formed. As will be described later, the punching plate 14 acts to promote vaporization by attaching waste oil supplied into the combustion cylinder 11 and blown up by an air flow to the through hole.

  In the waste oil combustion unit 5 configured as described above, the waste oil supplied from the waste oil supply unit 8 and the compression supplied from the air supply unit 9 into the combustion space 12 of the combustion cylinder 11 are described in detail later. Waste oil mist is injected and supplied by the air. In the waste oil combustion section 5, the combustion oil is burned in the combustion space section 12 of the combustion cylinder 11, and the combustion space is generated by the action of the generated flame and the compressed air supplied with the combustion gas and the fins 13 constituting the swirl flow generating means. A swirling flow is generated in the section 12.

  In the waste oil combustion section 5, the swirl flow in the combustion space section 12 promotes the combustion of waste oil in the combustion cylinder 11 and flows from the bottom of the combustion cylinder 11 into the duct section 7. In the waste oil combustion section 5, even if waste oil is supplied, the high temperature state in the combustion cylinder 11 is maintained and complete combustion is performed, so that fuel efficiency is improved. In the waste oil combustion unit 5, exhaust is performed from the bottom of the combustion cylinder 11, so that the generated heat can be efficiently used in cooperation with the duct unit 7 described later.

  The exhaust unit 6 includes a silencer cylinder 16 and a chimney body 17 having one end side attached to the silencer cylinder 16 and the other end side piped outdoors. Is installed next to the waste oil combustion section 5. The exhaust unit 6 reduces noise caused by exhaust gas and secondary air exhausted vigorously from the waste oil combustion unit 5 through the duct unit 7 in the muffler cylinder 16, and exhausts the outside by the chimney body 17.

  The muffler cylinder 16 is formed in a rectangular tube shape by constituting an exhaust gas passage 18 penetrating in the length direction inside by a heat-resistant metal material or the like. The silencer cylinder 16 has a lower mounting flange portion 16A formed on the outer periphery of the lower end portion and an upper mounting flange portion 16B formed on the outer periphery of the upper end portion. The silencer cylinder 16 has a plurality of mounting holes formed in the lower mounting flange portion 16A, and is fixed on the duct portion 7 by mounting screws screwed into the mounting holes. The silencer cylinder 16 also has a plurality of mounting holes formed in the upper mounting flange portion 16B. By integrating the upper mounting flange portion 16B and the mounting flange portion 17A with mounting screws screwed into these mounting holes, the chimney The body 17 is attached.

  As shown in FIGS. 3 and 4, the muffler cylinder 16 is provided with a plurality of muffler dampers 19 arranged on the inner peripheral wall at different positions in the circumferential direction and alternately arranged in the height direction. The muffler dampers 19 are formed of metal plates, for example, with a length such that the tip portions overlap each other in the exhaust gas flow path 18, and are provided on the inner peripheral wall of the muffler cylinder 16 in a horizontal state.

  As will be described later, the exhaust gas 6 and the secondary air supplied from the air supply unit 9 through the duct unit 7 flow into the sound deadening cylinder 16 vigorously. The silencer cylinder 16 regulates the flow direction and the flow velocity when the exhaust gas and the secondary air that have flowed in abut against the silencer damper 19 as shown in FIG. Thus, the silencer cylinder 16 reduces the noise caused by the exhaust gas and discharges it to the outside through the chimney 17.

  The duct portion 7 includes a combustion / exhaust table 20 on which the waste oil combustion portion 5 and the exhaust portion 6 described above are mounted adjacent to each other on the upper surface portion 20A. The combustion / exhaust stand 20 is formed as a box shape, for example, as a heat-resistant metal die-cast member, with the upper surface portion 20A, the outer peripheral portion 20B, and the bottom surface portion 20C forming a combustion / exhaust space portion 21 therein. The combustion / exhaust table 20 is not limited to an integral metal die-cast member. For example, the upper surface portion 20A, the outer peripheral portion 20B, and the bottom surface portion 20C are formed as separate members using, for example, a heat-resistant stainless steel, and these members are combined. You may make it comprise.

  In the combustion / exhaust stand 20, the upper surface portion 20A has one region as a combustion portion assembly region in which the combustion cylinder 11 of the waste oil combustion portion 5 described above is detachably mounted, and the other region as the sound deadening of the exhaust portion 6 described above. An exhaust part assembly region in which the cylindrical body 16 is detachably mounted is used. A plurality of mounting holes are formed in the combustion part assembly area of the upper surface part 20A in the combustion / exhaust table 20, and the mounting screws of the clamping mechanism 15 are placed in a state where the mounting holes of the mounting flange part 11B are aligned with these mounting holes. The combustion cylinder 11 is erected by tightening. As shown in FIGS. 3 and 4, the combustion / exhaust table 20 includes an internal combustion / exhaust space 21 and a combustion space of the combustion cylinder 11 in a state where the combustion cylinder 11 is erected in the combustion part assembly region. Combustion / exhaust ports 22 for communicating the bottoms of 12 are formed. The combustion / exhaust port 22 is a circular opening having substantially the same diameter as the combustion space 12 of the combustion cylinder 11.

  The combustion / exhaust base 20 has a plurality of mounting holes formed in the exhaust section assembly region of the upper surface portion 20A, and tightens mounting screws that are inserted into the mounting holes while the mounting holes of the lower mounting flange portion 16A are aligned. Thus, the silencing cylinder 16 is erected. As shown in FIGS. 3 and 4, the combustion / exhaust base 20 has an exhaust gas flow between the internal combustion / exhaust space 21 and the silencer cylinder 16 in a state where the silencer cylinder 16 is erected in the exhaust assembly area. An exhaust port 23 for communicating the bottom of the passage 18 is formed. The exhaust port 23 is formed of a rectangular opening that is substantially the same shape as the exhaust gas flow path 18.

  An outer peripheral portion 20B is integrally formed on the combustion / exhaust table 20 along the outer peripheral edge of the upper surface portion 20A. As shown in FIGS. 5 and 6, the outer peripheral portion 20 </ b> B is formed with an ignition port 24 for performing an ignition operation at a position corresponding to the exhaust assembly area. The ignition port 24 is opened and closed by a door 25, and a fire material 26 (see FIG. 6) to be described later is put into the combustion / exhaust space 21 with the door 25 opened as shown in FIG.

  Although not shown, the combustion / exhaust table 20 is provided with, for example, a piezoelectric igniter adjacent to the ignition port 24. The igniter has a piezoelectric element, a plug, and the like, and a spark is emitted from the tip of the plug by driving the piezoelectric element by operating an ignition operation member such as an operation dial or an operation lever provided on the operation control panel 45 described later. To do. In the igniter, for example, the operation member is operated in a state where the door 25 is opened and the fire material 26 is put into the combustion / exhaust space 21 to ignite the fire material 26. The igniter is not limited to such a piezoelectric igniter, but may be made to ignite the fire type material 26 by an appropriate igniting means. The igniter is not limited to the one integrated with the combustion / exhaust stand 20, but is an independent type. There may be.

  The combustion / exhaust stand 20 is integrally formed with a bottom surface portion 20C along the outer peripheral edge of the outer peripheral portion 20B. As shown in FIGS. 3 to 5, the bottom surface 20 </ b> C has a firing port 27 that is positioned corresponding to the combustion / exhaust port 22 formed in the top surface 20 </ b> A corresponding to the waste oil combustion unit 5. The bottom surface portion 20 </ b> C is formed with an annular convex portion 28 that surrounds the firing port 27 and constitutes the fire material holding concave portion 29. The firing port 27 is formed by projecting an opening portion in a truncated cone shape toward the inner surface side, and is located on the central axis of the combustion space portion 12 of the waste oil combustion portion 5 with respect to the bottom surface portion 20C. It is formed through. The spout 27 inserts a later-described waste oil injection nozzle 30 for injecting waste oil into the combustion / exhaust space portion 21 and faces the bottom of the combustion space portion 12.

  The combustion / exhaust stand 20 is charged with a fire material 26 in which, for example, a ceramic fiber bundle is impregnated with kerosene from the ignition port 24 in the combustion / exhaust space 21 as described above. The fire material 26 is held in a fire material holding recess 29 surrounded by an annular protrusion 28 so as to cover the waste oil injection nozzle 30 that is partly inserted from the opening 27. In addition, as shown in FIG. 5, the annular convex portion 28 is cut out at a portion on the side of the ignition port 24, and is connected to the inner surface of the outer peripheral portion 20 </ b> B to form a passage portion, and a fire type material pushed in from the ignition port 24. 26 does not spread into the combustion / exhaust space 21 and reaches the inside of the central fire material holding recess 29, and also prevents the kerosene from flowing out.

  In the combustion / exhaust table 20, kerosene impregnated from the fire material 26 oozes out onto the bottom surface portion 20 </ b> C. However, as described above, the opening portion of the nozzle 27 has a truncated cone shape. The spilled kerosene will not spill out. Further, in the combustion / exhaust table 20, as described above, the annular protrusion 28 is formed so as to surround the firing port 27, so that the leaked kerosene flows on the bottom surface portion 20C and enters the combustion / exhaust space portion 21. There is no spread. The combustion / exhaust stand 20 ensures safety in a state where kerosene is burned.

  As shown in FIGS. 3 to 5, the combustion / exhaust stand 20 has a secondary air supply port 31 positioned on the bottom surface portion 20 </ b> C corresponding to the exhaust port 23 formed on the top surface portion 20 </ b> A corresponding to the exhaust portion 6. Opened. The secondary air supply port 31 is also formed so that the opening portion projects in a truncated cone shape toward the inner surface side, and is configured so that gas and flame do not flow out from the combustion / exhaust space 21. The secondary air supply port 31 is located on the central axis of the exhaust gas flow path 18 of the exhaust unit 6 with respect to the bottom surface part 20C, and is formed through the bottom surface part 20C. It is made to face the bottom part of the exhaust gas flow path 18 so that external air is blown into the part 21 as secondary air.

  In the combustion / exhaust stand 20, as described above, unburned substances are introduced into the combustion / exhaust space portion 21 from the bottom of the opening of the combustion cylinder 11 of the waste oil combustion portion 5 through the combustion / exhaust port 22 of the upper surface portion 20A. The contained flame and combustion gas flow in. Secondary air is blown into the combustion / exhaust stand 20 from the secondary air supply port 31 into the combustion / exhaust space 21, and secondary combustion is promoted around the vicinity of the combustion / exhaust port 22.

  In the combustion / exhaust table 20, due to the blowing of secondary air, the exhaust part assembly region side is in a negative pressure state in the combustion / exhaust space 21 with respect to the combustion part assembly region side. In the combustion / exhaust table 20, the exhaust gas generated in the combustion / exhaust space portion 21 by the secondary combustion is thereby efficiently drawn into the exhaust portion 6. In the combustion / exhaust stand 20, efficient exhaust in the combustion / exhaust space portion 21 further promotes the swirling of flame and combustion gas in the combustion space portion 12 of the combustion cylinder 11, thereby improving combustion efficiency. To be able to.

  As shown in FIGS. 1 and 2, the combustion / exhaust table 20 is combined with a heat shield plate 33 made of a metal plate or the like so as to face the bottom surface portion 20 </ b> C of the combustion / exhaust table 20. The radiant heat from the bottom surface portion 20C to the floor surface is configured to be shielded. As shown in FIGS. 1 and 2, installation leg members 34 are attached to the combustion / exhaust table 20 at the four corners of the bottom surface portion 20 </ b> C, respectively, and are installed on the base 4 in a horizontal state via the installation leg members 34. Is done.

  The waste oil supply unit 8 is installed together with the air supply unit 9 in the other region 4L of the base 4 separated from the waste oil combustion unit 5, the exhaust unit 6 and the duct unit 7 through the partition member 10 as described above. The waste oil supply unit 8 includes a waste oil tank 35 that stores a predetermined amount of waste oil, a waste oil pump 43, a waste oil supply pipe 37 provided with a waste oil on-off valve device 36 that omits details, and a waste oil injection nozzle 30. The waste oil supply unit 8 is provided with an auxiliary tank 38 in the middle of the waste oil supply pipe 37.

  In the waste oil tank 35, the lid provided at the upper part is opened and the waste oil is stored inside. Although not shown, the waste oil tank 35 is provided with a level meter that makes it possible to visually recognize the remaining amount of waste oil from the outside. As shown in FIG. 2, the waste oil tank 35 is installed on the base 4 by leg members provided at the four corners of the bottom surface. As shown in FIG. 3, the waste oil tank 35 is installed by a leg member so as to be positioned higher than the waste oil injection nozzle 30 so that the waste oil is supplied to the waste oil injection nozzle 30 via the waste oil pump 43. . The waste oil pump 43 is rotationally controlled by operating a volume operation member provided on the operation control panel 45 and supplies waste oil from the waste oil tank 35 to the waste oil supply pipe 37.

  Although not shown, the waste oil tank 35 is assembled with a filter for filtering dust and the like from the waste oil to be supplied, a water removing unit for removing the separated water, and the like. In addition, the waste oil tank 35 may be provided with a plurality of filters having different filtration specifications, or a drain valve for water removed by a deodorizer, an air vent mechanism, or a moisture removing unit. The waste oil tank 35 is provided with a drain cock so that the waste oil accumulated inside is removed when cleaning or unnecessary. The waste oil tank 35 may be provided with a flow rate control means for controlling the waste oil on-off valve device 36 to control the flow rate of the waste oil.

  The waste oil supply unit 8 supplies the waste oil from the waste oil tank 35 to the waste oil supply pipe 37 by opening the waste oil on-off valve device 36 and operating the waste oil pump 43. By installing the auxiliary tank 38 at a position close to the partition wall member 10, the waste oil supply unit 8 is vaporized when waste oil staying in the auxiliary tank 38 is heated by radiant heat and injected from the waste oil injection nozzle 30. Make it easier to be promoted and misted. The waste oil supply unit 8 may directly supply the waste oil from the waste oil tank 35 to the waste oil injection nozzle 30 without the auxiliary tank 38.

  As shown in FIG. 3, the waste oil supply pipe 37 is guided from the bottom of the auxiliary tank 38 through the guide groove 10 </ b> A formed in the partition wall member 10 to the lower side of the combustion / exhaust table 20 of the duct portion 7. The waste oil supply pipe 37 is piped to a position where the tip portion faces the burning port 27 of the combustion / exhaust table 20, and this tip portion is connected to the waste oil injection nozzle 30. The waste oil supply pipe 37 is preferably made of a metal pipe material having heat resistance and corrosion resistance, but is not limited to this. For example, the waste oil supply pipe 37 is cheaper between the waste oil tank 35 and the auxiliary tank 38 apart from the partition member 10. It is also possible to use a synthetic resin pipe with a high oil resistance.

  The waste oil injection nozzle 30 includes a large diameter waste oil ejection pipe 39 that injects waste oil supplied from the waste oil supply section 8 and a small diameter air ejection pipe 40 that injects compressed air supplied from the air supply section 9. Is done. As shown in FIGS. 3 and 4, the waste oil injection nozzle 30 is formed by combining an air jet pipe 40 in a waste oil jet pipe 39 in a coaxial state. The waste oil injection nozzle 30 is connected to the tip of a waste oil supply pipe 37 in the middle of the waste oil injection pipe 39, and a primary air supply pipe 41 for supplying compressed air from an air supply section 9 described later to the lower end of the air injection pipe 40. The tip of is connected.

  In the waste oil injection nozzle 30, the waste oil ejection pipe 39 has a diameter larger than that of the distal end portion of the air ejection pipe 40 at the distal end portion, but is slightly narrowed. The waste oil injection nozzle 30 is combined with the waste oil injection pipe 39 by inserting the air injection pipe 40 from the lower end side of the waste oil injection pipe 39 so that the tip of the air injection pipe 40 is located at a small diameter portion. In the waste oil injection nozzle 30, the axial gap formed between the inner peripheral surface of the waste oil ejection pipe 39 and the outer peripheral surface of the air ejection pipe 40 constitutes a waste oil flow path.

  The waste oil injection nozzle 30 is fitted into the combustion / exhaust space portion 21 from the opening 27 formed in the bottom surface portion 20C of the combustion / exhaust table 20 described above. The tip of the waste oil injection nozzle 30 faces the combustion space portion 12 of the combustion cylinder 11 described above via the combustion / exhaust port 22 formed in the upper surface portion 20 </ b> A of the combustion / exhaust base 20. In the waste oil injection nozzle 30, waste oil is supplied from a waste oil tank 35 to a waste oil ejection pipe 39 via a waste oil supply pipe 37, and overflows from the tip. In the waste oil injection nozzle 30, compressed air is supplied from the air supply unit 9 to the air ejection pipe 40 via the primary air supply pipe 41 and ejected from the tip part.

  In the waste oil injection nozzle 30, the waste oil is mixed with compressed air at the tip portion to become a mist state, and this waste oil mist is injected into the combustion space portion 12 of the combustion cylinder 11 as indicated by an arrow in FIG. 4. In the waste oil injection nozzle 30, the waste oil is supplied from the waste oil supply unit 8 by the waste oil ejection pipe 39 side being in a negative pressure state due to the flow rate of the compressed air and performing the operation of drawing the waste oil.

  The air supply part 9 is installed using the space part comprised between the waste oil tank 35 and the base 4 installed in the high position via the leg member with respect to the base 4 as described above. The primary air supply pipe 41, the blower 42, and the air on-off valve device 44 that omits details are provided. Since the blower 42 is equivalent to a blower used for a general boiler or the like, a detailed description thereof is omitted, but the taken-in air is compressed and supplied to the primary air supply pipe 41.

  The primary air supply pipe 41 passes through the guide groove 10A formed in the partition wall member 10 via the air on-off valve device 44 and is piped below the heat shield plate 33 to the lower part of the waste oil combustion unit 5 as described above. Is connected to the waste oil injection nozzle 30 to supply compressed air.

  For example, the air supply unit 9 branches the primary air supply pipe 41 and the secondary air supply pipe from the blower 42 to supply the primary air to the waste oil combustion unit 5 and supply the secondary air to the exhaust unit 6. May be. The combustion / exhaust table 20 is in a negative pressure state when exhaust gas flows vigorously in the combustion / exhaust space portion 21, and can take in air from the secondary air supply port 31. In addition, the air supply unit 9 supplies the primary air from the primary air supply pipe 41 described above to the combustion cylinder 11 via the waste oil injection nozzle 30 and directly supplies air to assist the combustion of the waste oil. It may be.

  The waste oil stove 1 is provided with an operation control panel 45 which omits details on the side surface of the waste oil tank 35. Although not shown, the operation control panel 45 is connected to a power switch for turning on / off the power, an operation switch for opening / closing the waste oil on-off valve device 36 and an on / off operation of the blower 42, or the waste oil combustion unit 5. A waste oil supply adjustment volume for adjusting the amount of waste oil supplied, an air supply adjustment volume for adjusting the amount of air supply to the exhaust section 6, and the like are provided.

  For example, the waste oil stove 1 is provided with a thermometer in the combustion space portion 12 of the waste oil combustion portion 5 to measure the temperature in the combustion space portion 12 and input the measurement information to a controller provided in the operation control panel 45. May be. The waste oil stove 1 automatically adjusts the waste oil supply adjustment volume and the air supply adjustment volume according to the output from the controller so that the waste oil is burned in an optimum state in the waste oil combustion section 5 and has an abnormal heating state. You may make it detect and perform automatic fire extinguishing. For example, although not shown in the operation control panel 45, the waste oil stove 1 is provided with an automatic seismic device. When the automatic seismic device detects an earthquake of a predetermined seismic intensity, the waste oil on / off valve device 36 and the air opening / closing are output by the output from the controller. The valve device 44 is closed and automatic fire extinguishing is performed.

  In the waste oil stove 1 configured as described above, as shown in FIG. 6, the door 25 is opened, and after the fire material 26 in which, for example, ceramic fiber bundle is impregnated with kerosene is introduced from the ignition port 24, the door 25 is closed. Then, the ignition port 24 is closed. In the waste oil stove 1, the input fire type material 26 covers the waste oil injection nozzle 30 by a part thereof and is held in the fire type material holding recess 29. In the waste oil stove 1, kerosene oozes out from the fire material 26, but is prevented from spreading by the annular convex portion 28 and partially vaporized.

  In the waste oil stove 1, the power switch of the operation control panel 45 is turned on and the operation switch is turned on. In the waste oil stove 1, the waste oil and air supply operation is thereby performed, and the waste oil mist in which the waste oil and air are mixed is injected from the waste oil injection nozzle 30 into the combustion space portion 12 of the combustion cylinder 11. In the waste oil stove 1, the ignition material 26 is ignited by the spark emitted from the igniter by operating the ignition operation member of the operation control panel 45.

  In the waste oil stove 1, the combustion of the waste oil injected in the mist state into the combustion space portion 12 is easily performed by the flame generated from the fire material 26. In the waste oil stove 1, when the kerosene impregnated with the fire material 26 burns out, the fire extinguisher itself extinguishes, but hardly burns because the ceramic fiber bundle is used as the base material. In the waste oil stove 1, the ceramic fiber bundle may be left as it is in the fire material holding recess 29, and an appropriate amount of kerosene may be supplied from the ignition port 24 and impregnated in the ceramic fiber bundle at the next use.

  In the waste oil stove 1, in the combustion space portion 12 of the combustion cylinder 11, convection of flame and combustion gas occurs due to the injection pressure of the waste oil mist from the waste oil injection nozzle 30 and combustion of the waste oil mist. A swirling flow is generated by the action of the provided fins 13. In the waste oil stove 1, the swirling flow efficiently stirs the waste oil mist, primary air, flame, and combustion gas in the combustion space 12 of the combustion cylinder 11, so that the waste oil does not cause incomplete combustion. Burns efficiently. In the waste oil stove 1, the waste oil can be burned with a small amount of kerosene impregnated in the fire material 26, and the combustion of the waste oil mist continuously supplied by the combustion of the waste oil is performed even when the kerosene is used up. Continuously.

  In the waste oil stove 1, the flame and the combustion gas swirling in the combustion cylinder 11 flow from the bottom of the combustion space portion 12 into the duct portion 7. In the waste oil stove 1, the flame and the combustion gas vigorously flow into the combustion / exhaust space 21 through the combustion / exhaust port 22 of the combustion / exhaust stand 20. In the waste oil stove 1, secondary combustion of the flame and combustion gas containing unburned substances flowing from the combustion cylinder 11 in the combustion / exhaust space 21 is efficiently performed.

  In the waste oil stove 1, the secondary air is supplied from the secondary air supply port 31 formed at a position corresponding to the exhaust port 23 of the combustion / exhaust stand 20 as described above. In the waste oil stove 1, the blown secondary air flows vigorously into the exhaust gas flow path 18 of the silencer cylinder 16 of the exhaust section 6 through the combustion / exhaust space section 21. In the waste oil stove 1, the exhaust part 6 side is in a negative pressure state with respect to the waste oil combustion part 5 side in the combustion / exhaust space part 21, and the swirling of flame and combustion gas in the combustion cylinder 11 is further promoted and combustion efficiency is increased. Is improved.

  In the waste oil stove 1, exhaust gas generated in the duct portion 7 is drawn into the exhaust portion 6 in a negative pressure state and exhausted to the outside. In the waste oil stove 1, the exhaust gas whose flow velocity has been increased by the supply of secondary air flows into the silencer cylinder 16 vigorously and hits the silencer damper 19 provided on the inner wall of the exhaust gas passage 18, while flowing in the direction and flow velocity. Is flown into the chimney body 17. In the waste oil stove 1, the flow velocity sound of the exhaust gas is thereby silenced and released to the outside through the chimney, and the silent operation is performed.

  In the waste oil stove 1, by turning off the operation switch of the operation control panel 45, the operation of supplying waste oil and air to the waste oil combustion unit 5 is stopped, and the combustion of waste oil in the waste oil combustion unit 5 is stopped. In the waste oil stove 1, the power switch is turned off.

  In the waste oil stove 1, a combustion space in which waste oil mist is injected from a waste oil injection nozzle 30 on the inside of a duct portion 7 having a combustion / exhaust stand 20 that forms a combustion / exhaust space portion 21 in an overall box shape. The waste oil combustion part 5 having the combustion cylinder 11 constituting the part 12 and the exhaust part 6 having the muffler cylinder 16 and the chimney 17 are mounted next to each other. In the waste oil stove 1, secondary combustion is performed by introducing flames and combustion gases from the bottom of the combustion cylinder 11 that performs primary combustion into the combustion / exhaust space 21 of the combustion / exhaust base 20 through the combustion / exhaust port 22. The exhaust gas is exhausted through the exhaust unit 6. In the waste oil stove 1, combustion and exhaust are performed through the duct portion 7 constituting the base of the waste oil combustion portion 5 and the exhaust portion 6, so that efficient heat utilization is achieved.

  In the waste oil stove 1, the waste oil is quickly burned by using a small amount of kerosene for assisting ignition in the waste oil combustion part 5 by the configuration of the waste oil combustion part 5, the exhaust part 6 and the duct part 7 described above. Is possible. The waste oil stove 1 uses a small amount of kerosene only at the time of ignition and eliminates the need for kerosene as auxiliary fuel, thereby eliminating the need for a kerosene tank, kerosene supply mechanism, or kerosene supply control unit. And stable combustion without combustion pulsation due to kerosene supply during combustion.

  In the waste oil stove 1, primary combustion in the combustion cylinder 11 of the waste oil combustion part 5 and combustion in the duct part 7 and secondary combustion in the exhaust stand 20 are efficiently performed. In the waste oil stove 1, fuel efficiency is improved and suitable heating is performed, and the generation of carbon sludge and soot due to incomplete combustion is greatly reduced to improve maintainability and cleanliness. The waste oil stove 1 is driven silently by the configuration of the exhaust section 6 and hardly generates odor due to efficient combustion of the waste oil.

  Of course, the waste oil combustion apparatus according to the present invention is not limited to the waste oil stove 1 shown as the above-described embodiment, and can be developed to various apparatuses using waste oil as fuel. FIG. 7 shows the cooking device 50 shown as the second embodiment. The cooking device 50 has the same basic configuration as that of the waste oil stove 1 described above, so the corresponding parts are denoted by the same reference numerals and description thereof is omitted. The cooking device 50 also includes a waste oil combustion unit 5, an exhaust unit 6, a duct unit 7, a waste oil supply unit 8 and an air supply unit 9 (not shown). The cooking device 50 does not require much heat generation as compared with the waste oil stove 1, so each component is configured with a small size and a small capacity.

  In the cooking device 50, the combustion / exhaust table 20 constituting the duct portion 7 is formed with a larger length, and the combustion cylinder 11 and the muffler cylinder 16 are mounted with a relatively large interval. To do. Thus, the cooking device 50 configures a large area between the combustion cylinder 11 and the muffler cylinder 16 as a work area 51 for performing cooking on the upper surface of the combustion / exhaust table 20. The cooking device 50 can perform cooking by placing the material directly on the work area 51 and cooking by placing a cooking utensil. In addition, the cooking device 50 may attach, for example, a stainless steel plate in consideration of dirt or the like in the work area 51.

  DESCRIPTION OF SYMBOLS 1 Waste oil stove (waste oil combustion apparatus), 4 base, 5 Waste oil combustion part, 6 Exhaust part, 7 Duct part, 8 Waste oil supply part, 9 Air supply part, 10 Partition member, 11 Combustion cylinder, 12 Combustion space part, 13 Fin, 14 Punching plate, 16 Silencer cylinder, 17 Chimney, 18 Exhaust gas flow path, 19 Silencer damper, 20 Combustion / exhaust space, 20A Top surface, 20B Outer periphery, 20C Bottom surface, 21 Combustion / exhaust space , 22 Combustion / Exhaust port, 23 Exhaust port, 24 Ignition port, 26 Fire type material, 27 Sparkling port, 28 Annular projection, 29 Fire type material holding recess, 30 Waste oil injection nozzle, 31 Secondary air supply port, 35 Waste oil tank , 37 Waste oil supply pipe, 39 Waste oil injection pipe, 40 Air injection pipe, 41 Primary air supply pipe, 42 Blower, 43 Waste oil pump, 45 Operation control panel, 50 , 51 work area

Claims (4)

An overall cylindrical combustion cylinder having a ceiling part and forming a combustion space part of waste oil inside, and a mounting flange part integrally formed on the outer peripheral wall on the lower end side, and an inner peripheral wall of the combustion cylinder A waste oil combustion section provided with a swirling flow generating means that is provided and generates a swirling flow of flame or combustion gas in the combustion space section;
A plurality of muffler dampers that regulate the flow of exhaust gas by forming an exhaust gas flow passage penetrating in the length direction inside and arranging in the height direction at different positions relative to the circumferential direction on the inner peripheral wall An overall cylindrical silencing cylinder formed, and an exhaust part having a chimney that is attached to and detached from the upper part of the silencing cylinder and exhausts the exhaust gas to the outside;
A duct part having a combustion / exhaust base for mounting the waste oil combustion part and the exhaust part next to each other;
Waste oil supply comprising a waste oil tank, a waste oil pump, and a waste oil injection nozzle provided at the tip of a waste oil supply pipe connected to the waste oil pump and injecting waste oil into the combustion space of the combustion cylinder in a mist state And
A blower and one end side thereof is connected to the blower and the other end side is connected to the waste oil supply pipe to supply compressed air for applying an injection pressure at which waste oil is injected into the combustion space from the waste oil injection nozzle. An air supply unit having a primary air supply pipe;
The duct unit on which the waste oil combustion unit and the exhaust unit are mounted, and a base on which the waste oil supply unit and the air supply unit are mounted,
The combustion / exhaust stand of the duct portion is configured as a combustion / exhaust space portion and formed in a box shape as a whole, and one region of the upper surface portion is used as a combustion portion assembly region in which the combustion cylinder is detachably assembled. In the state where the combustion cylinder is assembled, the combustion / exhaust space portion and the combustion space portion are formed to form a combustion / exhaust port, and the other region on the side is used as the exhaust portion assembly region for assembling the silencer cylinder. An exhaust port communicating with the combustion / exhaust space portion is formed in a state where the cylinder is assembled, an ignition port is formed at a portion corresponding to the combustion portion assembly region on the side surface portion, and the combustion portion assembly region on the bottom surface portion is formed. A scoring port is formed in the corresponding part so that the waste oil injection nozzle faces the combustion space of the combustion cylinder through the combustion / exhaust port, and the silencer cylinder is formed in a part corresponding to the exhaust part assembly region. Secondary It will form a gas-supply port,
Combustion gas generated in the waste oil combustion part is guided from the bottom surface side of the combustion cylinder to the combustion / exhaust space part through the combustion / exhaust port to cause secondary combustion, and in this combustion / exhaust space part A waste oil combustion apparatus that exhausts the generated exhaust gas by introducing it into the silencer cylinder through the exhaust port.   The combustion / exhaust base of the duct part is formed with a convex part that surrounds the spark opening on the inner surface of the bottom face part and constitutes a fire material holding recess for holding the fire material charged from the ignition port. Item 2. A waste oil combustion apparatus according to Item 1.   3. The waste oil combustion apparatus according to claim 1, wherein the combustion / exhaust base of the duct portion includes a work region between the combustion portion assembly region and the exhaust portion assembly region on an upper surface portion.   The said base is provided with the partition part which isolate | separates the said duct part carrying the said waste oil combustion part and the said exhaust part, the said waste oil supply part, and the said air supply part. The waste oil combustion apparatus described in 1.

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