JP-7856353-B1 - Incinerator

JP7856353B1JP 7856353 B1JP7856353 B1JP 7856353B1JP-7856353-B1

Abstract

[Problem] 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. [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. [Selection Diagram] Figure 3

Inventors

松中怜子

Assignees

株式会社アスティホールディングス

Dates

Publication Date: 20260511
Application Date: 20251115

Claims (4)

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.
The incinerator according to claim 1, characterized in that the base of the airflow-promoting pipe is connected to the central shaft at radial positions from the center of the central shaft, and similar airflow-promoting pipes are also connected to the central shaft at point-symmetric positions from the center of the central shaft.
The incinerator according to claim 2, characterized in that the air ejection holes are drilled so as they expand in diameter towards the top.
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 .

Description

This invention relates to an incinerator that detoxifies and burns combustible waste at low cost and with high efficiency. Currently, for relatively small incinerators used to process combustible waste, reducing environmental impact and complying with laws and regulations are of paramount importance. In particular, since the amendment of the Waste Management and Public Cleansing Law in December 2002, structural and emission standards for small incinerators have been tightened, including under the Special Measures Law Concerning Countermeasures against Dioxins. Incinerators that do not meet these standards are prohibited from use. Therefore, small-scale incinerators are no longer simply for burning waste; high-performance models that meet environmental regulations are now the mainstream, and products are available that feature stable combustion at least above 800°C, a secondary combustion structure, and appropriate exhaust gas treatment capabilities. To meet these environmental regulations, it is necessary to achieve near-complete combustion. The most crucial aspect of this is efficiently supplying combustion air to the combustion chamber, and various technological developments have been undertaken in recent years in this area. For example, the technology related to the "incinerator" disclosed in Patent Document 1 comprises a housing with a combustion chamber inside, a blower that supplies 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 unit installed in the combustion chamber to supply the combustion air. The blower unit 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 unit further comprises a first retaining part that blows out the combustion air radially outward from the support shaft. The first retaining part is installed on the support shaft 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. According to this technology, combustion air is supplied while rotating by a rotating part, generating a rotating airflow centered on the 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. This improves the combustion efficiency of the combustion chamber, enabling complete combustion of the materials being combusted at high temperatures, and suppressing the generation of harmful substances and combustion residues. Furthermore, the technology related to the "mobile gasification incinerator" disclosed in Patent Document 2, for example, involves attaching an ignition burner and a grate to an incinerator body consisting of an open-topped cylindrical body. A required number of cylindrical air vents from a blower installed outside the incinerator body are erected within the incinerator body from below the grate. The upper ends of these air vents are closed, and multiple air outlets are opened horizontally to the bottom surface of the incinerator body, arranged in multiple stages at required intervals, so that air circulates circumferentially within the incinerator body. According to this technology, by arranging the combustion air supplied from the blower in multiple stages, a multi-stage combustion chamber is formed. Incineration material is placed in the lower combustion chamber, ignited by an ignition burner, and burned to produce combustible gas. This gas is then ignited by combustion air injected from an upper air outlet, generating high temperatures and allowing for complete combustion of unburned gas. Patent No. 7076657Official Gazette No. 3092388 This is a front-upper perspective view of the incinerator according to this embodiment.This is a rear-upper perspective view of the incinerator according to this embodiment.(a) is a simplified front cross-sectional view of the incinerator, and (b) is a simplified plan cross-sectional view.(a) is a partial plan view showing the central support structure erected inside the combustion chamber of the incinerator, and (b) is a perspective view of the central support structure.(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