Incinerator

Abstract

The present invention provides an incinerator that can generate a stable rotating airflow in the combustion chamber while suppressing the effects of the size and shape of the material being processed, thereby enabling low-cost, highly efficient, and harmless combustion. [Solution] The incinerator 1 according to the present invention comprises a combustion chamber 4, a chimney 23, a waste input section 17, an air outlet section 26 that guides combustion air sent from a blower 29 into the combustion chamber 4, a tubular core 5 with its upper end closed that is erected from approximately the center of the bottom of the combustion chamber 4 and communicates with the air outlet section 26, and an ignition / discharge section 14 formed on the lower side of the combustion chamber 4. The core 5 is characterized by having a plurality of air ejection holes 6 drilled vertically on its circumferential surface, and a V-shaped airflow-promoting pipe 8 protruding and fixed from the lower side, which consists of a base 9 extending horizontally for a predetermined length and communicating with the core 5, and an inclined section 10 that is bent and extends diagonally upward for a predetermined length from the outer end of the base 9.

Description

Technical Field

[0001] The present invention relates to an incinerator for harmlessly burning combustible waste at low cost and high efficiency.

Background Art

[0002] Currently, relatively small incinerators for treating combustible waste place great importance on reducing environmental impact and complying with laws and regulations. In particular, since the amendment of the Law on the Treatment and Cleaning of Waste (Waste Treatment Law) in December 2002, structural standards and emission standards for small incinerators, including the Special Measures Law for Dioxin Countermeasures, have been tightened, and the use of incinerators that do not meet the standards is prohibited.

[0003] Therefore, small incinerators are not only for simply burning waste, but high-performance models that meet environmental regulations are the mainstream, and products with at least stable combustion at 800 °C or higher, a secondary combustion structure, and appropriate exhaust gas treatment capabilities are provided.

[0004] To clear such environmental regulations, it is necessary to achieve complete combustion as much as possible. For this purpose, the most important thing is to efficiently send combustion air into the combustion chamber, and various technological developments have been carried out in recent years for this technology.

[0005] For example, the technology relating to the "incinerator" disclosed in Patent Document 1 comprises a housing having a combustion chamber inside, a blower that sends combustion air to the combustion chamber through an air passage, a magnetic passage arranged in the air passage and equipped with a magnet, and a blower that is installed in the combustion chamber and supplies the combustion air. The blower comprises a support shaft and a rotating part rotatably mounted on the support shaft from which the combustion air is blown out. The combustion air passes through the magnetic passage where the magnet is installed and is supplied to the combustion chamber from the rotating part. The thrust from the blown combustion air causes the rotating part to rotate relative to the support shaft, and the combustion chamber is provided with an exhaust port from which the burnt air is discharged. The blower further comprises a first pressing part that blows the combustion air radially outward from the support shaft. The first pressing part is installed on the support shaft at a position closer to the exhaust port than the rotating part and has a structure that blows out the combustion air in a direction inclined toward the rotating part in a plane perpendicular to the support shaft.

[0006] According to this technology, combustion air is supplied while rotating by a rotating part, generating a rotating airflow centered on a support shaft within the housing. Furthermore, the first retaining part prevents the rotating airflow generated by the rotating part from flowing out to the exhaust port, allowing the combustion air to remain in the combustion chamber for a longer period of time, improving the combustion efficiency of the combustion chamber, enabling complete combustion of the materials to be combusted at high temperatures, and suppressing the generation of harmful substances and combustion residues.

[0007] Furthermore, the technology related to the "mobile gasification incinerator" disclosed in Patent Document 2, for example, is constructed by attaching an ignition burner and a grate to an incinerator body made of an open-topped cylindrical body, and erecting the required number of cylindrical air pipes from a blower installed outside the incinerator body from below the grate into the incinerator body from above, with the upper end of the air pipe being closed, and having multiple air outlets opened horizontally to the bottom surface of the incinerator body in a multi-stage manner at required intervals from directly below the grate, so that air moves circumferentially inside the incinerator body.

[0008] According to this technology, by arranging the combustion air supplied from the blower in multiple stages, multiple combustion chambers are formed. Incinerators are placed in the lower combustion chamber and ignited by an ignition burner to burn them, creating combustible gases. These gases are then ignited by combustion air injected from an upper air outlet, generating high temperatures and allowing for the complete combustion of unburned gases. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Patent No. 7076657 [Patent Document 2] Official Gazette No. 3092388 [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] Indeed, the technology described in Patent Document 1 is superior in that it can be expected to keep the combustion air in the combustion chamber for a long time by suppressing the rotating airflow generated by the rotating part that rotates around the support shaft with the first pressing part.

[0011] However, the nozzle of the rotating part opens horizontally, making it inefficient for raising the rotating airflow. Furthermore, while this does not hinder the rotation of the rotating part if the material to be burned is a liquid such as wood tar, if the material is a solid, it is fed in by dropping it from the exhaust port at the top of the combustion chamber. Depending on the size and shape of the material, the fed material can become an obstacle, hindering the rotation of the rotating part caused by the thrust of the combustion air, thus preventing efficient rotation of the combustion air.

[0012] Furthermore, while the technology described in Patent Document 2 is indeed superior in that it forms a multi-stage combustion chamber by sequentially supplying combustion air through air outlets formed in the air supply pipe at predetermined intervals, it is theoretically superior in that it can ignite the unburned gas on the lower side with the supply of combustion air from above and raise the temperature.

[0013] However, because the flow rate and force of the combustion air ejected from the air outlet of the air duct, which is closed at the top, weaken as it moves from bottom to top, a decrease in ignition power is unavoidable, making it an insufficient structure for stable and complete combustion.

[0014] This invention was made in view of the above circumstances, and aims to provide an incinerator that can generate a stable rotating airflow in the combustion chamber while suppressing the influence of the size and shape of the material to be processed, and that can detoxify and burn the material at low cost and with high efficiency. [Means for solving the problem]

[0015] To achieve the above objectives, the present invention provides the following technologies.

[0016] The invention according to claim 1 comprises a combustion chamber, a chimney communicating with the upper part of the combustion chamber, a waste input section formed in the gap between the combustion chamber and the chimney, an air outlet section for guiding combustion air sent from a blower located outside the combustion chamber into the combustion chamber, a tubular shaft with a closed upper end erected from approximately the center of the bottom of the combustion chamber and communicating with the air outlet section, and an ignition and discharge section formed on the lower side of the combustion chamber for removing residue from the combustion chamber and inputting igniter, wherein the shaft is It is formed so that the diameter widens as it goes upwards. The present invention provides an incinerator characterized by having multiple air ejection holes drilled vertically on the circumferential surface, and having a V-shaped airflow-promoting pipe protruding and fixed from the lower side, which consists of a base extending horizontally for a predetermined length and communicating with the core rod, and an inclined portion extending diagonally upward for a predetermined length from the outer end of the base.

[0017] The invention according to claim 2 provides an incinerator according to claim 1, characterized in that the base of the airflow-promoting pipe is connected to a radial position from the center of the core, and a similar airflow-promoting pipe is also connected to a point-symmetric position from the center of the core.

[0018] In the invention according to claim 3, the air ejection holes are bored so as to increase in diameter as going upward, and it is intended to provide the incinerator according to claim 2.

[0020] Claim 4 In the invention according to, the airflow promoting pipe is characterized in that the inclined portion is formed in a spiral shape, and it is intended to provide the incinerator according to claim Any one of items 1 through 3 described above.

Advantages of the Invention

[0021] According to the invention described in claim 1, it comprises a combustion chamber, a chimney communicating with the upper part of the combustion chamber, a waste input part formed in the gap between the combustion chamber and the chimney, an air delivery part for leading the combustion air sent out from a blower device disposed outside the combustion chamber into the combustion chamber, a tubular mandrel erected from substantially the center of the bottom of the combustion chamber and communicating with the air delivery part with its upper end closed, and a ignition / discharge part for taking out the residue in the combustion chamber and charging the ignition material formed on the lower side of the combustion chamber. The mandrel It is formed so that the diameter widens as it goes upwards. has a plurality of air ejection holes bored vertically on the peripheral surface, and a base portion extending horizontally in a predetermined length communicating with the mandrel on the lower side, and a U-shaped airflow promoting pipe protruding and fixed, which consists of an inclined portion extending obliquely upward with a predetermined length bent from the outer end portion of the base portion. Thus, the combustion air sent out obliquely upward from the airflow promoting pipe becomes a rotating airflow rising with flames. Further, the momentum of the flames is increased by the combustion air sent out from the air ejection holes above the airflow promoting pipe, and a stable rotating airflow rising can be obtained, so that the processed material can be rendered harmless and burned at low cost and with high efficiency.

[0022] Also, Because the core is shaped to widen in diameter as it goes upwards, the flow velocity inside the pipe decreases and pressure loss inside the pipe is suppressed, improving the overall pressure distribution of the pipe and increasing the uniformity of the ejected flow rate. As a result, a stable upward rotating airflow with increased flame intensity can be obtained, and furthermore, since the airflow promoting pipe is fixed to the mandrel and the combustion air is also sent out obliquely upward, the influence of inhibiting the rotating airflow due to the size and shape of the processed material input from the waste input part can be suppressed, so that a stable rotating airflow can be generated in the combustion chamber.

[0023] According to the invention described in claim 2, the airflow boosting pipe is connected in communication with the base at a radial position from the center of the mandrel, and similar airflow boosting pipes are also connected in communication at positions point-symmetrical from the center of the mandrel. Thus, not only can the two airflow boosting pipes surely generate a rising rotational airflow with an increased flame momentum, but even if the processed material input from the waste input part temporarily inhibits the delivery of combustion air from one of the airflow boosting pipes, the generation of the rotational airflow of the rising flame can be maintained by the delivery of combustion air from the other airflow boosting pipe.

[0024] According to the invention described in claim 3, since the air ejection holes are drilled so as to increase in diameter upward, in the mandrel with a closed upper end, if the sizes of the air ejection holes drilled on the peripheral surface are the same, the static pressure inside the pipe decreases from the bottom to the top, so the ejected flow rate decreases. However, by increasing the diameter of the air ejection holes upward, the ejected flow rate can be significantly equalized. Therefore, not only can a stable rising rotational airflow with an increased flame momentum be obtained, but local flow rate adjustment is also possible.

[0026] Claim 4 According to the invention described, since the airflow boosting pipe is formed with a spiral inclined part, the combustion air sent from the inclined part to the combustion chamber through the mandrel can be in a spiral shape and rise while diffusing, so that the rotational airflow can be increased, and thus the combustion efficiency can be improved.

Brief Description of the Drawings

[0027] [Figure 1] It is a front upper perspective view of the incinerator according to this embodiment. [Figure 2] It is a rear upper perspective view of the incinerator according to this embodiment. [Figure 3] (a) is a front simple cross-sectional explanatory view of the incinerator, and (b) is a plan simple cross-sectional explanatory view. [Figure 4] (a) is a partial plan view showing the mandrel erected in the combustion furnace of the incinerator, and (b) is a perspective view of the mandrel. [Figure 5](a) is a view of the central rod from direction A as shown in Figure 4(a), (b) is a view from direction B showing the inclination of the inclined section of the airflow-promoting tube in a front view, (c) is a view from direction C, (d) is a view from direction D, and (e) is an explanatory diagram showing the inclination of the inclined section of the airflow-promoting tube in a plan view. [Figure 6] This is a front view showing a spindle with air vents that widen in diameter as they move upwards. [Figure 7] (a) is a front view showing a spindle that gradually increases in diameter as it goes upwards, and (b) is a front view showing a spindle that continuously increases in diameter. [Figure 8] This is a partial perspective view showing that the opening of the inclined section of the airflow-enhancing pipe is formed in a flattened shape. [Figure 9] (a) is a partial perspective view showing that the inclined portion of the airflow-enhancing pipe is formed in a spiral shape, and (b) is a partial perspective view showing that the inclined portion and the base are formed in a spiral shape. [Modes for carrying out the invention]

[0028] The gist of the incinerator according to the present invention is a combustion chamber, a chimney communicating with the upper part of the combustion chamber, a waste input section formed in the gap between the combustion chamber and the chimney, an air outlet section that guides combustion air sent from a blower located outside the combustion chamber into the combustion chamber, a tubular core with a closed upper end erected from approximately the center of the bottom of the combustion chamber and communicating with the air outlet section, and an ignition / discharge section formed on the lower side of the combustion chamber for removing residue from the combustion chamber and inputting igniter material. The core is characterized by having multiple air ejection holes drilled vertically on its circumferential surface, and having a V-shaped airflow-promoting pipe protruding and fixed from the lower side, consisting of a base extending horizontally for a predetermined length and communicating with the core, and an inclined section that bends and extends diagonally upward for a predetermined length from the outer end of the base. In other words, the aim is to provide an incinerator that can generate a stable rotating airflow in the combustion chamber while suppressing the influence of the size and shape of the material being processed, thereby enabling low-cost, highly efficient, and harmless combustion.

[0029] Hereinafter, an embodiment and modified example of the incinerator according to the present invention will be described with reference to the drawings. In this description, structures and parts that are identical or symmetrical on both sides will, in principle, be denoted by the same reference numeral, and only one side will be described, while the other side will be omitted as appropriate.

[0030] As shown in Figures 1 to 3(a) and (b), the basic incinerator 1 according to an embodiment of the present invention comprises a combustion chamber 4, a chimney 23 communicating with the upper part of the combustion chamber 4, a waste input section 17 formed in the gap between the combustion chamber 4 and the chimney 23, an air outlet section 26 that guides combustion air sent from a blower 29 located outside the combustion chamber 4 into the combustion chamber 4, and a tubular core 5 with its upper end closed, erected from approximately the center of the bottom of the combustion chamber 4 and communicating with the air outlet section 26. The main shaft 5 consists of an ignition and discharge section 14 formed on the lower side of the combustion chamber 4 for removing residue from the combustion chamber 4 and introducing igniter material. The main shaft 5 has multiple air ejection holes 6 drilled vertically on its circumferential surface, and a V-shaped airflow-promoting pipe 8 is fixed to the lower side, consisting of a base 9 extending horizontally for a predetermined length and communicating with the main shaft 5, and an inclined section 10 extending diagonally upward for a predetermined length, which is bent and extends from the outer end of the base 9.

[0031] In this embodiment, the incinerator 1 specifically has a metal, rectangular box-shaped casing 2 inside which a combustion furnace 3, a blower 29, a control unit 33, etc. are arranged, and a chimney 23 is erected from the top of the casing 2 via a waste input section 17, and two ventilation openings 41 made of mesh are formed on the right side of the casing 2.

[0032] The housing 2 is formed from metal square bars into a rectangular box shape, with its circumferential surface covered by a metal plate, and four square bars extending beyond the bottom are formed as legs 42, allowing it to be freely mounted.

[0033] Furthermore, the combustion chamber 4 is the internal space of a bottomed cylindrical combustion furnace 3 made of heat-resistant ceramic cement or heat-resistant brick of a predetermined thickness. A chimney 23 is connected to the top of the waste input section 17, which is outside the housing 2 and connected to the top of the combustion furnace 3, so that the combustion chamber 4 is connected to the chimney 23.

[0034] The waste input section 17 consists of a roughly cylindrical lower half 18 and a roughly conical upper half 20. The lower half 18 has a waste input door 19 that protrudes horizontally in a rectangular shape from the roughly cylindrical circumferential surface, with a handle 19a protruding from the front, allowing it to be opened and closed freely and communicate with the combustion chamber 4. The upper half 20 has an exhaust bypass port 21 consisting of a short pipe that protrudes horizontally from the roughly conical circumferential surface, and a chimney 23 extending vertically is connected to the upper end of the upper half 20.

[0035] The chimney 23 has a so-called conical cap 24 at the top of a cylinder of a predetermined length to protect it from rain, and releases the harmless exhaust gases discharged from the incinerator 1 into the outside air.

[0036] The exhaust bypass port 21, which protrudes from the upper half of the waste input section 17, is used when installing a separate dryer that utilizes the residual heat discharged from the incinerator 1 to efficiently reduce the moisture content of the waste before input, thereby enabling weight reduction of the waste and improvement of combustion efficiency. It is normally kept closed.

[0037] Furthermore, the shape and configuration of the waste input section 17 and chimney 23 described above are not limited to this embodiment, and various modifications and changes are possible within the scope of the gist of the present invention.

[0038] Furthermore, the blower 29, which is located inside the housing 2, is an electric device consisting of a vacuum blower or the like. It is connected to an intake pipe 31 that is drawn in from outside the housing 2 to introduce air from outside the housing 2 into the blower 29, and a control unit 33 that electrically controls the operation of the blower 29 is connected by electrical wiring. In addition, an air supply section 26, consisting of an air supply pipe 27 for supplying combustion air to the combustion chamber 4, extends to approximately the center of the lower bottom surface of the combustion furnace 3 and is connected to a core rod 5, which will be described later and is located in the combustion chamber 4.

[0039] Furthermore, in the middle section of the air supply pipe 27 extending from the blower 29 to the combustion furnace 3, a magnetic passage 40 (5, 6 in the publication), such as that described in Japanese Patent Publication No. 7076657, may be provided to curve the airflow and thereby destabilize the flow of combustion air, thereby improving the combustion efficiency in the combustion chamber 4.

[0040] Furthermore, the control unit 33 is housed in a rectangular box-shaped control box with a lid that can be opened and closed and is operable from the front of the housing 2 and can be accessed from the inside with a push handle 36. Wiring (not shown) for supplying power from outside the housing 2 is connected internally via a circuit breaker and a main power switch to an operation switch 34 for turning the power of the blower 29 ON / OFF, and an indicator lamp 35 that allows visual confirmation of the operation and ignition status of the blower 29. These operation switches 34 and indicator lamp 35 are located on the front.

[0041] Furthermore, the control unit 33 may also incorporate a control device such as a PLC to allow for flexible control of the operation of the blower 29, such as setting the time from when the operation switch 34 is turned ON until the blower 29 starts operating, setting the time from when it is turned OFF until the blower 29 stops, and controlling the operation of the blower 29 to manage the temperature if a temperature sensor is formed in the combustion chamber 4, etc.

[0042] Furthermore, on the lower front side of the housing 2, an ignition and discharge section 14, which consists of a small door that can be opened and closed to open an opening formed on the lower circumferential surface of the combustion furnace 3 for removing residue from the combustion chamber 4 and inserting igniter material, is pivotally connected to the housing 2 with a hinge 15 formed on the upper side.

[0043] In the combustion chamber 4 of the incinerator 1 configured in this way, a central shaft 5 is erected approximately in the center of the combustion chamber 4, with a length less than or equal to the height of the combustion furnace 3, for the purpose of efficiently burning the combustion air supplied from the blower 29 via the air supply pipe 27 in the combustion chamber 4.

[0044] As shown in Figure 4(b), the core rod 5 consists of a metal circular tube with a closed upper end, and has a male thread 7 formed on the periphery of the open lower end. Additionally, as shown in Figure 3(a), a female thread 12 for connection to the air supply pipe 27 is formed at the same location at the bottom of the combustion furnace 3, so that the core rod 5 can be detachably attached to the combustion chamber 4.

[0045] Furthermore, as shown in Figure 4(b), the core rod 5 has multiple air ejection holes 6 drilled in its circumferential surface that communicate with the interior from top to bottom, and a V-shaped airflow-promoting pipe 8 is fixed to the lower side, consisting of a base portion 9 that extends horizontally for a predetermined length and communicates with the core rod 5, and an inclined portion 10 that bends and extends diagonally upward for a predetermined length from the outer end of the base portion 9.

[0046] Specifically, in the combustion chamber 4, which has a height of 860 mm and an inner diameter of 480 mm, the core rod 5 is made of a circular tube with a length of 700 mm (including a 50 mm male thread portion) and a wall thickness of 4 mm, with an outer diameter of 49 mm and an inner diameter of 41 mm, and is formed by closing the upper end.

[0047] Furthermore, the air ejection holes 6 are drilled with a diameter of φ4.5 mm across the top and bottom of the core rod 5 at approximately 75 mm intervals, and are arranged in four directions in a cross shape when viewed from above. The air ejection holes 6 are arranged so that adjacent air ejection holes 6 are staggered in the left-right direction, and adjacent air ejection holes 6 are positioned approximately 90° apart at the approximate center between the top and bottom of each air ejection hole 6.

[0048] Furthermore, the airflow-promoting pipe 8, which protrudes from the lower side of the core rod 5, is a circular pipe with a length of 90 mm, a wall thickness of 3.5 mm, an outer diameter of 18 mm, and an inner diameter of 11 mm. The base 9 is 60 mm long, and the inclined section 10 is 30 mm long. As shown in Figures 5(a) to (d), which show the core rod 5 as shown in Figure 4(a) viewed from directions A to D, the inclined section 10 is bent at an angle θ1 of 15° with respect to the base 9 in a front view, as shown in Figure 5(b), and as shown in Figure 5(e), it is bent at an angle θ2 of 15° with respect to the base 9 in a plan view, and is formed to incline diagonally upward.

[0049] It should be noted that the configuration of the incinerator 1 according to the above-described embodiment is a basic form, and the dimensions and angles of each part are not limited to this embodiment. It goes without saying that various modifications and changes are possible within the scope of the gist of the present invention.

[0050] In this basic incinerator 1, the core 5 including the airflow-enhancing pipe 8 can also be configured in a modified form, such as the following:

[0051] First, the position where the airflow-promoting pipes 8 protrude from the core rod 5 is at least half, preferably less than one-third, of the length of the core rod 5. The number of pipes does not matter as long as they are simply connected to the core rod 5. Furthermore, one airflow-promoting pipe 8 may be connected radially from the center of the core rod 5. Additionally, as shown in the series of diagrams illustrating this embodiment, two or more airflow-promoting pipes 8 can be connected at point-symmetrical positions from the center of the core rod 5.

[0052] Furthermore, in order to significantly equalize the flow rate ejected from the central rod 5 extending vertically, the air ejection holes 6 can be drilled so that their diameter increases as they go upwards, as shown in Figure 6. This not only allows for a stable upward rotating airflow with increased flame intensity, but also enables localized flow rate adjustment.

[0053] In this case, it is desirable that the diameter of the air ejection holes 6 gradually expand upwards, such that the maximum diameter at the top is approximately five times or less the minimum diameter at the bottom; however, the diameter of the air ejection holes 6 is not limited to this embodiment.

[0054] Furthermore, in order to improve the pressure distribution throughout the tube of the core 5 and enhance the uniformity of the ejected flow rate, the core 5 can be formed to widen in diameter towards the top, as shown in Figures 7(a) and 7(b). This reduces the flow velocity inside the tube, suppresses pressure loss inside the tube, and allows for a stable, upward-moving rotating airflow with increased flame intensity.

[0055] In this case, it is desirable that the inner diameter of the spindle 5 gradually expands upwards, with the maximum inner diameter at the top being approximately 2.0 times or less, preferably approximately 1.5 times or less, compared to the minimum inner diameter at the bottom. However, the inner diameter of the spindle 5 is not limited to this embodiment.

[0056] Furthermore, as long as the core rod 5 expands in diameter as it goes upward, it is also possible to form it by welding together multiple circular pipes of different diameters to create a gradual expansion in diameter upward, as shown in Figure 7(a), or to use circular pipes that expand in diameter continuously upward, as shown in Figure 7(b).

[0057] Furthermore, in order to improve combustion efficiency by complicating the combustion air ejection pattern of the airflow-enhancing pipe 8, the opening of the inclined section 10 may be formed in a flattened (elliptical) shape, as shown in Figure 8. In this case, for example, it is desirable to flatten the opening of the inclined section 10 by crushing it from above and below before bending the inclined section 10 of the right-hand airflow-enhancing pipe 8 in the front view shown in Figure 5(b) by 15°, then bend it to 15° in the front view, and further bend it to 15° in the plan view, as shown in Figure 5(e).

[0058] Furthermore, in order to further complicate the combustion air ejection pattern and improve combustion efficiency, the airflow-promoting pipe 8 may be formed in a spiral shape with the inclined portion 10 twisted around the axis, as shown in Figure 9(a), and the base portion 9 may also be formed in a spiral shape in the same way, as shown in Figure 9(b).

[0059] Furthermore, various modifications and changes are possible within the scope of the gist of the present invention, such as forming the opening of the inclined portion 10 in a flattened shape and then forming the base 9 of the airflow-promoting pipe 8 and the inclined portion 10 in a spiral shape.

[0060] The incinerator 1 according to this embodiment, configured as described above, can be used, for example, as shown below.

[0061] First, to prepare for ignition, put in about 2-3 kg of dry wood shavings or commercially available firelighters through the opened ignition / discharge section 14. In this case, if possible, soaking the wood shavings in kerosene will make ignition easier.

[0062] Next, open the lid of the waste input section 17, then put in flammable wood or petroleum-based waste (such as plastic bottles) (approximately 2-3 kg), and then close the lid of the waste input section 17.

[0063] Then, after igniting the wood chips or fire starter from the ignition / discharge section 14 and confirming ignition, the waste input section 17 is closed, the main power switch in the control box is turned ON, and then the operation switch of the blower 29 is turned ON, and it is checked whether or not there is a sound of air being drawn in from the intake pipe 31.

[0064] Furthermore, any type of tool can be used for ignition, such as matches, lighters, or portable burners. In addition, a burner may be pre-installed in the combustion furnace 3 to allow for easy external ignition.

[0065] Furthermore, in this embodiment, the incinerator 1 is controlled by the control unit 33 so that the indicator lamp 35 lights up approximately 15 minutes after ignition is confirmed and the blower 29 is activated. After confirming that the indicator lamp 35 is lit, the waste input section 17 is opened and waste input begins.

[0066] Furthermore, it is desirable to cut waste into the smallest possible pieces (width 200mm, length 400mm or less) before putting it in the incinerator. When putting in light materials such as paper, it is desirable to put them in a bag or tie them together with string. In addition, to maintain combustion efficiency, it is best to avoid putting in large amounts of waste at once.

[0067] If combustion stops naturally and the incineration process is complete, after confirming the cessation of combustion from the ignition / discharge unit 14, the operation switch is turned OFF, the indicator lamp 35 is turned off, and the blower 29 is stopped, confirming that there is no sound of air being drawn in from the intake pipe 31, and the incineration work is completed. After the combustion chamber 4 has cooled sufficiently, the residue inside is discharged from the ignition / discharge unit 14 using a shovel or the like.

[0068] As described above, the incinerator 1 according to this embodiment can be configured and used.

[0069] As described above, the incinerator 1 according to the present invention comprises a combustion chamber 4, a chimney 23 communicating with the upper part of the combustion chamber 4, a waste input section 17 formed in the gap between the combustion chamber 4 and the chimney 23, an air outlet section 26 that guides combustion air sent from a blower 29 located outside the combustion chamber 4 into the combustion chamber 4, a tubular shaft 5 with its upper end closed, erected from approximately the center of the bottom of the combustion chamber 4 and communicating with the air outlet section 26, and an ignition / discharge section 14 formed on the lower side of the combustion chamber 4 for removing residue from the combustion chamber 4 and inputting igniter material, wherein the shaft 5 has a plurality of air ejection holes 6 drilled vertically on its circumferential surface. Furthermore, by attaching and fixing a V-shaped airflow-promoting pipe 8, which consists of a base portion 9 extending horizontally for a predetermined length and communicating with the core rod 5 at the lower side, and an inclined portion 10 extending diagonally upward for a predetermined length by bending from the outer end of the base portion 9, the combustion air sent diagonally upward from the airflow-promoting pipe 8 becomes an upward rotating airflow accompanied by a flame. In addition, the combustion air sent from the air outlet 6 above the airflow-promoting pipe 8 increases the intensity of the flame, and by obtaining a stable upward rotating airflow, the material to be processed can be detoxified and burned at low cost and with high efficiency.

[0070] Furthermore, since the airflow-promoting pipe 8 is fixed to the core rod 5 and the combustion air is also sent diagonally upward, the effect of the size and shape of the material being processed from the waste input section 17 on obstructing the rotating airflow can be suppressed, thereby enabling the generation of a stable rotating airflow in the combustion chamber 4.

[0071] Furthermore, since the airflow-enhancing pipes 8 have their bases 9 connected radially from the center of the core rod 5, and similar airflow-enhancing pipes 8 are also connected at point-symmetrical positions from the center of the core rod 5, the two airflow-enhancing pipes 8 can reliably generate an upward rotating airflow that increases the intensity of the flame. Moreover, even if the material being processed from the waste input section 17 temporarily obstructs the delivery of combustion air from one of the airflow-enhancing pipes 8, the delivery of combustion air from the other airflow-enhancing pipe 8 can maintain the generation of an upward rotating airflow for the flame.

[0072] Furthermore, since the air outlets 6 are drilled so that they widen in diameter as they go upwards, if the size of the air outlets 6 drilled on the circumferential surface of the core rod 5 with its upper end closed were the same, the static pressure inside the pipe would decrease from bottom to top, resulting in a decrease in the ejected flow rate. However, by widening the diameter of the air outlets 6 as they go upwards, the ejected flow rate can be made significantly more uniform. This not only allows for a stable, rising rotational airflow with increased flame intensity, but also enables localized flow rate adjustment.

[0073] Furthermore, since the core rod 5 is formed to widen in diameter as it goes upwards, the flow velocity inside the pipe decreases and pressure loss inside the pipe is suppressed, improving the overall pressure distribution of the pipe and enhancing the uniformity of the ejected flow rate. As a result, a stable upward rotating airflow with increased flame intensity can be obtained.

[0074] Furthermore, because the airflow-enhancing pipe 8 has a spirally formed inclined section 10, the combustion air sent from the inclined section 10 to the combustion chamber 4 via the core rod 5 can spread in a spiral shape while raising the rotating airflow, thereby improving combustion efficiency.

[0075] Although preferred embodiments of the incinerator 1 according to this embodiment of the present invention have been described above, the present invention is not limited to any particular embodiment, and various modifications and changes are possible. [Explanation of Symbols]

[0076] 1 Incinerator 4 Combustion chamber 5 Mandrel 6 Air vents 8. Airflow-promoting pipe 9 base 10 Slope 14 Ignition / discharge section 17 Waste Input Section 23 Chimney 26 Air outlet 29 Blower

Claims

1. It consists of a combustion chamber, a chimney communicating with the upper part of the combustion chamber, a waste input section formed in the gap between the combustion chamber and the chimney, an air outlet section that guides combustion air sent from a blower located outside the combustion chamber into the combustion chamber, a tubular core with a closed upper end that is erected from approximately the center of the bottom of the combustion chamber and communicates with the air outlet section, and an ignition and discharge section formed on the lower side of the combustion chamber for removing residue from the combustion chamber and inputting igniter material. The incinerator is characterized in that the central rod is formed to increase in diameter as it goes upward, has multiple air ejection holes drilled vertically on its circumferential surface, and has a V-shaped airflow-promoting pipe protruding and fixed from the lower side, consisting of a base that extends horizontally for a predetermined length and communicates with the central rod, and an inclined portion that bends and extends diagonally upward for a predetermined length from the outer end of the base.

2. The incinerator according to claim 1, characterized in that the base of the airflow-promoting pipe is connected to the center of the core rod at radial positions, and similar airflow-promoting pipes are also connected to the center of the core rod at point-symmetric positions.

3. The incinerator according to claim 2, characterized in that the air ejection holes are drilled so as they expand in diameter as they go upwards.

4. The incinerator according to any one of claims 1 to 3, characterized in that the airflow-promoting pipe has its inclined portion formed in a spiral shape.

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