JPH0712725U - Garbage incinerator - Google Patents

Abstract

(57) [Summary] [Purpose] In a refuse incinerator in which combustion air is forcibly supplied by an electric fan, power supply to the electric fan is simplified to facilitate handling. [Structure] The waste incinerator 26 has a furnace 12, and loads the waste 16 on a grate 14 inside thereof. An electric fan 34 is provided in the air intake 18 at the bottom of the furnace 12, and combusts air forcibly to incinerate the waste 16. Furnace 1
The thermoelectric power generation element 28 is attached to the outer wall 36 of No. 2 by screwing or the like. The high temperature contact side 30 of the thermoelectric power generating element 28 is in contact with the outer wall of the furnace 12, and the heat of combustion is transmitted. Further, the low temperature contact side 32 is cooled by touching the outside air 38. The electric power generated by the thermoelectric power generating element 28 is supplied to the electric fan 34 via the electric cable 40 to perform forced air supply.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a waste incinerator that completely combusts combustible waste by forced air supply, and simplifies the power supply to an electric fan for forced ventilation to facilitate handling of the device.

[0002]

[Prior art]

 A household waste incinerator having a structure shown in Fig. 2 has been generally used. The refuse incinerator 10 charges refuse 16 on a grate 14 in a furnace 12, and incinerates the refuse 16 by taking in combustion air from an air intake 18 at a lower portion of the furnace 12. A net 20 for preventing combustion material scattering is arranged above the furnace 12, and smoke and combustion gas 24 are discharged from a smoke outlet 22 through the mesh 20.

[0003]

[Problems to be solved by the device]

 Since the conventional refuse incinerator 10 supplies combustion air by natural air supply, it is said that the garbage 16 contains a large amount of so-called raw garbage such as vegetable waste, fish bones and heads that are not easily burned. However, there are inconveniences such as incomplete combustion, and the smoke 24 is mixed with impurities and discharged to give a bad odor.

In order to solve this, there has been a method in which a combustion air is forcibly supplied by an electric fan to complete combustion. Conventionally, a commercial power supply or a storage battery was used as the power supply for this electric fan, but in the case of a commercial power supply, the power cable must be pulled to the refuse incinerator outdoors, and in the case of a storage battery, it must be charged frequently. It was troublesome.

This invention solves the above-mentioned problems in the prior art, and in a refuse incinerator forcibly supplying combustion air by an electric fan, simplifies power supply to the electric fan to handle the device. It aims to provide an easier refuse incinerator.

[0006]

[Means for Solving the Problems]

 According to the first aspect of the present invention, the heat generated by the combustion of dust is used to generate electricity in the thermoelectric power generation element, and the generated power is used to drive the electric fan.

Further, the invention according to claim 2 is to drive the electric fan by utilizing the electric power generated by the thermoelectric power generating element to forcibly air-cool the low temperature contact side of the thermoelectric power generating element.

[0008]

[Action]

 According to the first aspect of the present invention, the heat generated by the combustion of dust is used to generate electric power in the thermoelectric power generation element, and the electric power generated is used to drive the electric fan. It becomes unnecessary and easy to handle.

According to the second aspect of the present invention, the low temperature contact side of the thermoelectric power generating element is forcedly cooled by driving the electric fan by using the electric power generated by the thermoelectric power generating element. The side is efficiently cooled, and the power generation efficiency can be improved.

[0010]

【Example】

 One embodiment of this invention is shown in FIG. The refuse incinerator 26 has a furnace 12 into which the refuse 16 is loaded onto a grate 14. An electric fan 34 is disposed in the air intake 18 at the bottom of the furnace 12, and combusts air forcibly to incinerate the dust 16. A net 20 for preventing the scattering of combustibles is arranged above the furnace 12, and smoke and combustion gas 24 are discharged from the smoke outlet 22 through the mesh of the net 20.

A thermoelectric power generating element 28 is attached to the outer wall 36 of the furnace 12 by screwing or the like. The thermoelectric power generation element 28 performs thermoelectric power generation by the Seebeck effect, and can be configured using, for example, a Fe—Si thermoelectric element that is resistant to high temperatures. The thermoelectric generation element 28 has the high temperature contact side 30 in contact with the outer wall of the furnace 12, and the heat of combustion is transmitted. Further, the low temperature contact side 32 is cooled by touching the outside air 38. In order to improve the cooling efficiency, cooling fins 42 for heat dissipation are attached to the low temperature contact side 32.

The electric power generated by the thermoelectric generator 28 is supplied to the electric fan 34 via the electric cable 40. The electric fan 34 is of a size capable of blowing a sufficient amount of air into the furnace 12, and the thermoelectric power generating element 28 is of a size and number capable of obtaining a sufficient output for driving the electric fan 34. ing.

According to the above configuration, when the dust 16 is charged into the furnace 12 and burned, the heat is transferred to the high temperature contact side 30 of the thermoelectric power generating element 28 through the outer wall 36 of the furnace 12. At this time, since the low temperature contact side 30 is cooled by the outside air, a temperature difference occurs between the high temperature contact side 30 and the low temperature contact side, and an electromotive force is generated. This electromotive force is supplied to the electric fan 34 via the electric cable 40, drives the electric fan 34, and forcibly supplies air. As a result, the dust 16 in the furnace 12 can be completely burned even if it contains raw dust, etc., and it is possible to prevent incomplete burning and generation of a foul odor.

Since the electromotive force of the thermoelectric power generation element 28 is small at the start of combustion and the electric fan 34 does not rotate, combustion is performed by natural air supply. In this case, the electric fan 34 has a structure that does not hinder the natural air supply from the air intake port 18. Alternatively, another air inlet is provided at the bottom of the furnace 12 so that it can be opened and closed, and the thermoelectric generator 28 is opened to naturally supply air until electric power capable of driving the electric fan 34 is generated. Alternatively, a storage battery or the like is provided as an auxiliary power source, and the electric fan 34 is driven by the auxiliary power source until the thermoelectric generator 28 generates electric power capable of driving the electric fan 34. In this case, the storage battery is only used as an auxiliary, so charging does not have to be performed frequently, and a small storage battery is sufficient. Alternatively, if the auxiliary power source is charged by using a part of the electromotive force of the thermoelectric power generating element 28 after switching from the auxiliary power source to the driving by the thermoelectric power generating element 28, a separate charging operation becomes unnecessary.

[0015]

[Other Examples]

 In the above embodiment, the low temperature contact side of the thermoelectric power generation element is naturally air-cooled, but it is also possible to use the electromotive force of the thermoelectric power generation element to rotate the cooling fan for forced air cooling. One example thereof is shown in FIG. The same parts as those of the embodiment of FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In the refuse incinerator 26 of FIG. 3, an electric fan 46 for forced air cooling is disposed toward the cooling fin 42 on the low temperature contact side 32 of the thermoelectric power generation element 28, and a part of the electromotive force of the thermoelectric power generation element 28 is an electric power. The electric fan 46 is supplied via the cable 48 to drive the electric fan 46 to forcibly cool the low temperature contact side 32 of the thermoelectric generator 28. This improves the power generation capacity of the thermoelectric power generation element 28. It is also possible to separately prepare and drive the thermoelectric generators for each of the electric fans 34 and 46.

Further, in the embodiment of FIG. 3, the electric fans are separately provided for the forced air supply and the forced air cooling, but one electric fan may be used in common. One example thereof is shown in FIG. In FIG. 4, the air intake 18 is formed in a duct shape, and the cooling fin 42 on the low temperature contact side 32 of the thermoelectric power generating element 28 faces the inside of the duct 18. An electric fan 50 for forced air supply and forced air cooling is arranged in the duct 18. The electromotive force of the thermoelectric power generation element 28 is supplied to the electric fan 50 to drive it. The outside air taken into the duct 18 by the electric fan 50 is forcibly supplied to the furnace 12 after the low temperature contact side 32 of the thermoelectric generator 28 is forcibly aired.

[0017]

[Example of change]

 In the above-mentioned embodiment, the thermoelectric generator was directly attached to the outer wall of the furnace, but when the temperature becomes too high, it can be attached via a heat insulating material or the like. Further, the location of the thermoelectric power generation element is not limited to the outer wall of the furnace, and it can be placed in a chimney or the like. Further, although the thermoelectric power generating element is disposed outside in the above-mentioned embodiment, it may be disposed inside when the furnace wall has a multi-layer structure or the like. In that case, the low temperature contact side is cooled by ventilation. Moreover, the present invention can be applied not only to household but also industrial waste incinerators.

[0018]

[Effect of device]

 As described above, according to the invention of claim 1, the heat generated by the combustion of dust is used to generate electricity in the thermoelectric generator, and the generated power is used to drive the electric fan. Therefore, a commercial power source and a storage battery are not required, and the handling becomes easy.

According to the invention of claim 2, the electric power generated by the thermoelectric power generation element is used to drive the electric fan to forcibly air-cool the low temperature contact side of the thermoelectric power generation element. The side is efficiently cooled, and the power generation efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a conventional naturally air-supplied waste incinerator.

FIG. 3 is a cross-sectional view showing an embodiment of the present invention in which the low temperature contact side of the thermoelectric generator is forcibly air-cooled.

FIG. 4 is a cross-sectional view showing another embodiment of the present invention in which the low temperature contact side of the thermoelectric generator is forcibly air-cooled.

[Explanation of symbols]

 12 Furnace 16 Garbage 26 Garbage incinerator 28 Thermoelectric power generating element 30 High temperature contact side 32 Low temperature contact side 34 Electric fan (for forced air supply) 46 Electric fan (for forced air cooling) 50 Electric fan (for both forced air cooling and forced air supply)

Claims (2)

[Scope of utility model registration request] 1. A furnace for charging and burning dust, and a high-temperature contact side disposed at a position for receiving heat from the combustion,
A thermoelectric generator having a low-temperature contact side arranged at a position where it is difficult to receive the heat; and an electric fan driven by electric power generated by the thermoelectric generator to forcibly supply combustion air into the furnace. Tuna waste incinerator. 2. The refuse incinerator according to claim 1, further comprising an electric fan driven by electric power generated by the thermoelectric power generating element to forcibly cool the low temperature contact side of the thermoelectric power generating element.