JPH08145322A - Incinerator - Google Patents

Abstract

PURPOSE: To prevent clogging and the like of a nozzle due to the invasion of dust into a nozzle part or the like by operating burner blowers mounted on respective burners also during operation of only a blower for exhausting, in an incinerator wherein only the blower for exhausting is operated after incineration by burning a burner. CONSTITUTION: In an incinerator constituted of a primary combustion chamber 5 receiving matters to be incinerated 2 and effecting incinerating treatment by combustion by burners 3, 4 for combustion which are attached to a side surface, and a secondary combustion chamber 7 for making exhaust gas generated from the primary combustion chamber 5, smokeless, unburnt gas, generated from the primary combustion chamber 5, is guided into the secondary combustion chamber 7 through exhaust ducts 13... by the operation of an exhausting blower 10, then, is exhausted out of an exhaust tube 8 after smoke eliminating treatment. In this case, respective burners 3, 4, 6 are shut off upon finishing incineration while the exhausting blower 10 and respective burner blowers for respective burners 3, 4, 6 are operated to cool respective combustion chambers 5, 7 and the like and prevent the clogging and the like of the nozzles due to the invasion of dust into the nozzles of the burners.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for completely burning combustible waste such as food waste and plastics discharged from ordinary households.

[0002]

2. Description of the Related Art A relatively large incinerator for burning combustible wastes such as food waste and plastics to incinerate the wastes as shown in, for example, Japanese Utility Model Laid-Open No. 5-45423. A primary combustion chamber for injecting and burning incineration materials such as the above, and a secondary combustion chamber for burning exhaust gas such as unburned gas generated by this primary combustion are provided, and a burner for incineration is provided in each of these combustion chambers. The burner is burned in the primary combustion chamber, the exhaust gas generated by this combustion is introduced into the secondary combustion chamber by the blower blower, and the exhaust gas is exhausted to the outside. ing.

[0003]

In the case of the above construction, the blower 5C is rotated at the time of incineration, and at the same time, the first and second burners 4E and 5D are burned, and when the incineration is completed, the first,
The second burner extinguishes the fire, and only the blower continues to rotate to cool the combustion chamber and the like.

Therefore, when only the blower is rotated to cool the combustion chamber or the like, dust remaining in the combustion chamber or the like enters the nozzle portion of the burner or the like to cause nozzle clogging.

Therefore, an object of the present invention is to prevent dust from entering the nozzle portion of the burner when the burner is extinguished and the blower is rotated.

[0006]

SUMMARY OF THE INVENTION According to the present invention, an incinerator is housed and a combustion burner is installed at a proper position on a chamber wall, and exhaust gas generated from the primary combustion chamber is passed through an exhaust duct. Equipped with a secondary combustion chamber in which a smoke-eliminating burner is installed in an appropriate position on the chamber wall, and an exhaust blower that forcibly exhausts the exhaust gas in the secondary combustion chamber to the outside. After burning and incineration, only the exhaust blower operates, and a blower drive circuit for operating the burner blower attached to each burner is provided while only the exhaust blower is operating.

[0007]

[Function] The incineration object is put into the primary combustion chamber, the combustion burner and the smoke extinguishing burner are ignited to start combustion, and the exhaust blower is operated to burn the incineration object, and the combustion is generated. The exhaust gas flows into the secondary combustion chamber through the exhaust duct, is completely burned by the smoke eliminating burner, and is then discharged to the outside.

On the other hand, when the incineration is completed, the combustion burner and the smoke extinguishing burner are extinguished, and the exhaust blower and the burner blower of each burner are operated to cool each combustion chamber and the like.

This prevents the nozzle clogging due to the intrusion of dust into the nozzle of the burner due to the operation of the burner blower.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described first with reference to FIG. 1. (1) is an incinerator, which stores incineration objects (2) such as various kinds of dust, plastic, rubber, etc. Primary combustion chamber (5) for incineration with combustion burners (3) (4) attached to the
And a secondary combustion chamber (7) in which exhaust gas generated from this primary combustion chamber is made smokeless by a smoke eliminating burner (6), and an exhaust stack (8) is provided above the secondary combustion chamber. The temperature sensors (9) for temperature detection are installed in appropriate places inside.

Reference numeral (10) is an exhaust blower mounted below the secondary combustion chamber (7), which is provided with a ventilation duct (11) extending into the secondary combustion chamber (7), and at the tip of this ventilation duct. The formed nozzle pipe (12) faces the lower end of the exhaust pipe (8),
The unburned gas generated from the primary combustion chamber (5) is guided into the secondary combustion chamber (7) by a plurality of exhaust ducts (13), (13) ... due to the ejector effect generated by the air blown from (12). The smoke is removed by the smoke extinguishing burner 6 and then discharged from the exhaust stack 8.

On the other hand, the combustion burners (3), (4) and the smoke eliminating burner (6) are provided with a nozzle (14) for ejecting liquid fuel as shown in FIG. From the spark plug (15) that ignites the liquid fuel, the blower tube (16) that supplies combustion air around the nozzle (14), etc., and the burner blower (17) that blows air into the blower tube. Mainly composed.

Further, the primary combustion chamber (5) has a charging port (18) for charging the material to be incinerated (2) on the upper surface in FIG. 1, and this charging port is, for example, a winch (19) manually operated. It is opened and closed by the lid (20) which is driven to open and close by.

FIG. 3 is a circuit diagram showing a blower drive circuit (21) formed as a part of a control circuit for controlling the combustion burners (3) (4), the smoke eliminating burner (6) and the like. The first relay coil (24) is connected to the commercial power source (22) such as phase 100V or three-phase 200V via the operation switch (23), and the first relay contact (25) of this first relay coil is also connected. A blower drive electromagnetic on-off valve (26) for controlling energization to the exhaust blower (10) and a second relay coil (27) are connected to each other via the first relay contact (25), A temperature contact (28) is connected in parallel, which closes when the temperature detected by the temperature sensor (9) reaches, for example, 165 ° C. or higher.

Further, the commercial power source (22) is connected to the combustion burners (3) (4) and the smoke elimination burner (4) via the relay contacts (29) (29) of the second relay coil (27). 6) Burner blower
(17) (17) (17) are connected, and the burner (3) (4) for combustion is connected via the second and third contacts (30) (30) of the first relay coil (24). ) And a controller power supply (31) (32) for controlling combustion of the smoke eliminating burner (6).

When incineration of the incineration object (2), the operation switch (23) is turned on after the incineration object (2) is charged into the primary combustion chamber (5) through the charging port (18). Then, the first relay coil (24) is energized, and thereby the blower drive electromagnetic on-off valve (26) is energized via the first relay contact (25) to activate the exhaust blower (10) and at the same time, The controller power supply (31) (32) is energized through the second and third relay contacts (30) (30), and at the same time, the second relay coil (27) is energized to relay contact (29) (29). Also close, each burner (3) (4) (6)
The burner blowers (17), (17), and (17) of the above are activated and an ignition operation is performed to start combustion.

On the other hand, when the temperature in the secondary combustion chamber (7) detected by the temperature sensor (9) after the start of incineration reaches or exceeds the predetermined temperature, the temperature contact (28) is closed.

When the incineration time elapses by a timer (not shown), the operation switch (23) is opened to open the first relay coil.
The power supply to (24) is stopped and the first to third relay contacts (25) (30)
(30) opens, the power supply to the controller power supply (31) (32) is stopped, and the combustion burners (3) (4) and smoke removal burner (6) extinguish, but through the temperature contact (28) The blower drive solenoid on-off valve (26) and the second relay coil (27) are continuously energized,
As a result, the burner blowers (17) (17) (17) and the exhaust blower (10) operate to blow air into the primary and secondary combustion chambers (5) (7) to cool them and Nozzle (14)
Ventilate the area to prevent dust from entering the area.

When the temperature sensor (9) detects a temperature drop to a predetermined temperature or lower due to the cooling, the temperature contact is detected.
Open (28) to stop the energization of the blower drive solenoid on-off valve (26) and the second relay coil (27), and relay contacts (30) (30)
Open the exhaust blower (10) and burner blower (17) (1
7) Stop the energization to (17) and end the operation.

[0020]

With the configuration according to the present invention, by operating the burner blower during the operation of the exhaust blower, even if the dust remaining in the combustion chamber is moved by the operation of the blower,
The burner blower blows air to the nozzle section of the burner to prevent nozzle clogging and the like due to intrusion of dust into the nozzle section.

[Brief description of drawings]

FIG. 1 is a side vertical sectional view showing an embodiment according to the present invention.

FIG. 2 is a plan sectional view of an essential part showing an embodiment according to the present invention.

FIG. 3 is a circuit diagram of a blower drive circuit of the same.

[Explanation of symbols]

 2 Combustibles 3 Combustion burner 4 Combustion burner 5 Primary combustion chamber 6 Smoke eliminating burner 7 Secondary combustion chamber 9 Temperature sensor 10 Exhaust blower 13 Exhaust duct 17 Burner blower 21 Blower drive circuit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyoshi Kishimoto 3-201 Minamiyoshikata, Tottori-shi, Tottori Santoyo Denki Co., Ltd. (72) Takashi Matsuda 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Denki Incorporated (72) Inventor Hiroki Sakamoto 3-201 Minamiyoshikata, Tottori City, Tottori Santo Electric Co., Ltd. (72) Inventor Shinichi Tokuda 3-201 Minamiyoshikata, Tottori City, Tottori Sanyo Denki Co., Ltd. (72) Inventor Akira Suzuki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture, Tottori Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A primary combustion chamber in which an incineration object is stored and a combustion burner is installed at an appropriate position on a chamber wall, and exhaust gas generated from the primary combustion chamber is introduced through an exhaust duct to burn. In addition, it is equipped with a secondary combustion chamber equipped with a smoke eliminating burner in an appropriate place on the chamber wall, and an exhaust blower forcibly exhausting the exhaust gas in the secondary combustion chamber to the outside. After that, in the incinerator which operates only the exhaust blower, a blower drive circuit for operating the burner blower attached to each of the burners is provided while only the exhaust blower is operating.