JPS62147210A - Incinerator - Google Patents

Abstract

PURPOSE:To enable smoke generated when an ignition is started or when garbage are added in the midway of operation to be reduced by a method wherein a switch means operated under operation of means for sensing a combustion state is provided and its ON or OFF state of blowing air or its high or low condition is changed over. CONSTITUTION:After dusts are put onto a garbage receiver 27 and ignited, a main switch 24 of a blower is turned on. At first, since a temperature of the ignited garbage is low, a temperature-sensing circuit 55 is not operated and is kept off and further a blower 6 is kept stopped. As a temperature in the main body is increased over the desired temperature, a temperature-sensing circuit 55 is turned on, and then the smoke passes through a chimney 4 and is discharged to an external part through a cutout 42. A part of the smoke passes through an opening 47 and is discharged to the external part from the second chimney. A concentration of the smoke at this time is detected by a smoke sensor 14 and as the concentration is increased over the desired concentration value, a smoke-sensing circuit 56 is turned on. Thus, as all the main switch 24, temperature-sensing circuit 55 and smoke-sensing circuit 56 are turned on, the blower is operated. The smoke generated within an inner cylinder 26 is pushed back again into the inner cylinder 26 with air fed from a blowing port 38 and the ignited again.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technology) The present invention relates to an incinerator used at home to burn waste paper, garden trees, etc.

(Background technology) -In order to prevent smoke from being emitted in the S incinerator, the emitted smoke is pushed back into the combustion chamber by a blower and burned again to reduce the amount of emitted smoke. A furnace is proposed. However, in this type of incinerator, when the combustion begins, the temperature inside the incinerator has not risen enough and the fire's strength is weak, so the fire is extinguished by the air blowing from the blower, and as a result, the fire is extinguished. The disadvantage was that a large amount of smoke was generated. Another drawback was that when garbage was added during the process, the temperature inside the incinerator dropped, causing the fire to go out and smoke to emit in the same way as when it started burning.

(Object of the Invention) The present invention was proposed in view of the above points, and it turns on and off the air blowing by the blower depending on the combustion state in the incinerator.
By turning it off or switching between strong and weak, the purpose is to reduce the amount of smoke generated when starting to burn or when adding garbage during the process.

(Disclosure of invention) DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to drawings showing embodiments.

Figures 1 to 6 show a first embodiment of the incinerator of the present invention, with Figure 1 being a front view, Figure 2 being a right side view of Figure 1, and Figure 3 being a right side view of Figure 1. ■-■ cross-sectional view in Figure 1, No. 4
The drawings are a sectional view taken along the line II-II in FIG. 2, FIG. 5 is an enlarged view of the main part of FIG. 4, and FIG. 6 is an electrical circuit configuration diagram.

To explain the configuration in the figure, a connecting fitting 30 is placed on the pedestal 5.
A cylindrical lower body 2 is placed through the cylindrical lower body 2, and an upper body 1 having a conical shape with the upper part cut out is placed on top of the cylindrical lower body 2. Chimney 4. The hats 11 are placed one after another. A bonfire 42 is provided at the top of the chimney 4 so that smoke can be smoothly discharged from between the chimney 4 and the hat 11. Further, the lower part of the pedestal 5 is closed by a bottom plate 43, and a pair of idle rails 29 are provided on the bottom plate 43, on which the drawer 7 slides. Note that the drawer 7 is constructed by cutting out a portion of the lower main body 2 and the base 5, and is inserted and removed through this cutout.

On the other hand, from the upper main body 1 to the lower main body 2, there is provided an inlet 40 for throwing in garbage, and an rR3 for opening and closing the inlet 40 is rotatably attached to the lower main body 2 by a hinge 10. In addition, there is an ash receiver 28 inside the lower body 2.
is attached, and the ash receiver 28 is composed of an inclined surface that slopes downward toward the center, and has an opening 32 in the center. Further, a dust receptacle 27 having a large number of openings 34 is placed on the ash receptacle 28, and a middle 42B is placed thereon at a predetermined distance from the inner surfaces of the upper main body 1 and the lower main body 2. It is. Note that there are many openings 35 around the middle 26.
is provided, and the upper part is closed by a partition plate 36, the outer peripheral edge of the partition plate 36 is provided with a slight gap from the inner surface of the upper main body 1, and a notch is provided on the extension of the air outlet 38 (Fig. (not shown) is provided.

On the other hand, an opening 47 is provided in a part of the chimney 4, and a second chimney 12 having an abbreviated shape is connected to the opening 47. In addition, the second
A fin 13 is provided on the horizontal part of the chimney 12,
The smoke passing through the second chimney 12 is cooled. Further, at the tip of the second chimney 12, there is a smoke sensor 14 consisting of a light emitter 15 and a light receiver 16, as shown in detail in FIG.
is attached at a predetermined distance from the second chimney 12 by a mounting bracket 17, and an aperture 45 is provided in the path through which light passes from the light emitting @1!15 to the light receiving N16. Fold the bottom part inward and make the folded piece 4.
6 is formed. The bent piece 46 is provided to prevent malfunction of the smoke sensor 14 due to smoke passing through the second chimney 12 coming out from the opening 45 and adhering to the smoke sensor 14.

On the other hand, the blower 6 and the lower main body 2 are connected by a connecting pipe 19, and air is blown out from the blowing port 38 through the blowing pipe 37. Note that the air blower 816 has a fan motor and a control circuit (not shown) inside, and a main switch 24 is provided outside. Additionally, a temperature sensor 44 is attached on the dust receptacle 27. Note that the signal from the temperature sensor 44 is sent to a lead wire (not shown) coated with a heat-resistant material such as ceramic.
Therefore, it is designed to be connected to a temperature detection circuit 55 inside the blower 6, which will be described later. Further, the above-mentioned smoke sensor 14 is also connected to a smoke detection circuit 56 in an air blower 816, which will be described later, by a lead wire coated with a heat-resistant material.

FIG. 6 shows the electrical circuit configuration, in which a main switch 24. A temperature detection circuit 55 and a smoke detection circuit 56 are connected in series. Note that the temperature detection circuit 55. The smoke detection circuit 56 operates as a switch, and when the temperature detected by the temperature detection circuit 55 or the temperature sensor 44 exceeds a predetermined temperature, the smoke detection circuit 56 switches the smoke sensor 1
4 is turned on when the detected smoke density exceeds a predetermined value.

In operation, open the door 3 and insert the middle cylinder 26 from the inlet 40.
After putting garbage on the garbage receptacle 27 inside and lighting it, turn on the air blower f.
Turn on the main switch 24 of s6.

Initially, since the temperature inside the main body is low, the temperature detection circuit 55 does not operate and is in an off state, and the fan motor M of the blower 6 is not energized and the air blowing is stopped.

Thereafter, when the combustion progresses and the temperature inside the main body reaches a predetermined temperature or higher, the temperature detection circuit 55 is turned on.

Further, the smoke passes through the chimney 4 and is discharged to the outside from the bonfire 42, and a part of it passes through the opening 47 and is discharged to the outside from the second chimney j2. When the sensor 14 detects the smoke and the concentration exceeds a predetermined level, the smoke detection circuit 56
turns on.

However, the main switch 24. When the temperature detection circuit 55 and the smoke detection circuit 56 are all turned on, a closed circuit is formed between the commercial power supply AC and the fan motor M, and the air blower [6 is activated.
Send air into the body.

Then, when the blower 6 operates, the smoke generated within the middle tube 26 is pushed back into the middle tube 26 by air from the outlet 38 and is twisted again. Therefore, the smoke due to incomplete combustion is not directly emitted but is combusted again, making it possible to significantly reduce the amount of smoke emitted to the outside. Additionally, when the dust in the middle WJ 26 burns out, no smoke is generated, and the concentration detected by the smoke sensor 14 decreases, so the smoke detection port #I56 turns off.
The power supply to the fan motor M of the blower 6 is stopped and air is no longer blown.

Next, Figures 7 to 10 show the second embodiment, with Figure 7 showing a longitudinal cross-sectional view of the incinerator similarly to Figure 3, and Figure 8 showing its main parts. An enlarged view, FIG. 9 is an electrical circuit configuration diagram, and FIG. 10 is a time chart showing the operation.

However, in this second embodiment, the temperature sensor 44 and the smoke sensor 14 are not provided, but instead a door switch 25 is provided in the lower body 1 to detect the open/closed state of the door 3, as shown in FIG. The main switch 24. is connected to the connection path between the commercial power supply AC and the fan motor M. Door switch 25. timer 57
are connected in series. The timer 57 has a reset terminal connected to the connection point between the main switch 24 and the door switch 25, and is reset when the main switch 24 is on and the door switch 25 is off, turning both ends off, and the main switch 24 is on and door switch 2
When 5 is turned on, the operation starts, and after a certain period of time, both ends are turned on.

Further, as shown in FIG. 8, the door switch 25 is covered with a heat insulating material 49 around a single limit switch 50, housed in a case 48, and attached to the lower body 2, and an actuator 51 protruding from the tip is attached to the door 3. When opened, it is pushed in and turns off the contact. In addition, case 4
8 and the heat insulating material 49 are provided with holes 52 and 53 for heat radiation.

Further, the other configurations are the same as those of the first embodiment described above.

For operation, turn on the main switch 24 and open the middle cylinder 2.
When the garbage in the air blower 6 is set on fire and the door 3 is closed, a timer 57 starts to measure time, and when the set time τ has elapsed, the fan motor M of the blower 6 is energized to blow air into the main body. However, since the set time τ of the timer 57 is set according to the time required for the combustion of the ignited garbage to proceed, when the fan motor M operates, the fire force is sufficiently strong. Since the fire is not extinguished and the smoke is re-combusted, smoke emissions can be reduced in the same manner as in the first embodiment described above.

Next, Fig. 11 and Fig. 12 show the third embodiment, Fig. 11 shows a longitudinal cross-sectional view of the incinerator similarly to Fig. 4, and Fig. 12 shows the electrical FIG. However, in this third embodiment, only the temperature sensor 44 is installed on the dust receptacle 27 inside the middle cylinder 26, and in the circuit, the temperature sensor 44 turns on when the temperature detected by the temperature sensor 44 exceeds a predetermined value. The detection circuit 55 is connected to the commercial power supply AC, and the main switch 24. It is inserted into a closed circuit formed by a fan motor M. Note that other configurations are the first and second configurations described above.
This is similar to the embodiment.

When the garbage starts to burn and the temperature inside the main body reaches a predetermined temperature or higher, the fan motor M of the blower 6 starts to blow air from the air outlet 38, and as the garbage burns out and the temperature inside the main body falls. The ventilation will automatically stop.

Next, Figures 13 to 15 show the fourth embodiment, with Figure 13 being a sectional view of the incinerator seen from the back, and Figure 14 being a sectional view of the incinerator seen from the side. The sectional view and FIG. 15 are electrical circuit configuration diagrams. Therefore, as a circuit, a smoke detection circuit 56 that turns on when the concentration of smoke detected by the smoke sensor 14 exceeds a predetermined value is connected to a commercial power supply AC,
Main switch 24. It is simply inserted into a closed circuit formed by the fan motor M.

As for the mechanical structure, the connecting pipe 19 branches into two parts within the lower main body 2, one of which is connected to the blower pipe 31 extending below the garbage receptacle 27, and the other connected to the blower pipe 37 extending above the partition plate 36. This embodiment differs from other embodiments in that it is The upper blower pipe 37 is connected to the first air pipe 37 mentioned above.
Similarly to the third embodiment, it branches into two directions at the upper part of the partition plate 36 and is connected to a pair of air outlets 38 . In addition, the lower blower pipe 31 has many openings 3 on its upper surface.
3 is a provision. Furthermore, a switching valve 41 made of a shape memory alloy is provided at the branching point of the two blower pipes 31 and 37, which blocks the upper blower pipe 37 at room temperature, and when the temperature rises due to combustion, the switch valve 41 closes off the upper blower pipe 37 as shown by the broken line in FIG. As shown, it is deformed to block the blower pipe 31 below.

The relationship between the total aperture area A, 8 of the pair of air outlets 38 and the total aperture area A33 of the large number of apertures 33 provided in the blower pipe 31 should be set so that A311<A33. be. This is to reduce the wind pressure of the wind blowing out from below, as will be described later.

In operation, when the dust inside the middle cylinder 26 is ignited, an upward air current is generated due to combustion, and air is sucked in through the inlet 54 provided between the lower body 2 and the pedestal 5, and the openings 32 and 34 are drawn in. through which it is supplied to the combustion section inside @26.

Note that this point is also the same in the first to third embodiments described above. After that, when smoke starts to come out, the smoke sensor 14 detects it, and the fan motor M in the air blower 816 rotates and starts blowing air. However, at this time, the temperature inside the main body has not yet risen sufficiently, so the switching valve 41 is located above and sends air to the blow pipe 31 below, and the air passes from the opening 33 to the opening 34 to the combustion section. supply and promote combustion. In addition,
As mentioned above, the openings 33 provided in the blower pipe 31 have a sufficiently large opening area, so the wind pressure is gentle and does not extinguish the fire, supplying the air necessary for combustion. It can promote combustion.

After that, as combustion progresses and the temperature inside the main body rises (as the switching valve 41 deforms downward, the air from the blower 6 is sent upward to the blow pipe 37, and the air is blown out from the air outlet 38). Since the opening area of this outlet 38 is small and constricted, the pressure of the air blown out from there is high and has enough pressure to suppress the generated smoke. The smoke containing
6 and re-burn it to reduce smoke generation. Also, at this time, the temperature inside the main body is high enough and the fire is strong, so even if you blow in high-pressure air, the fire will not go out.

(Effects of the Invention) As described above, in the present invention, a switch operated by a means for detecting the combustion state B in the furnace, such as a timer, a temperature sensor, or a smoke sensor, is installed in the connection path between the blower and the power source. By providing a means to turn the air blowing on/off or strong/weak depending on the combustion state in the furnace, it has the effect of allowing comfortable combustion without producing smoke from the beginning of combustion to the end of combustion.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the incinerator of the present invention, FIG. 1 is a front view, FIG. 2 is a right side view of FIG. 1, and FIG. Figure 4 is a cross-sectional view along ■-■ in Figure 2, Figure 5 is an enlarged view of the main part of Figure 4, Figure 6 is an electrical circuit configuration diagram, and Figures 7 to 7 are Fig. 10 shows the second embodiment, Fig. 7 is a vertical cross-sectional view of the incinerator, Fig. 8 is an enlarged view of the main parts in Fig. 7,
Figure 9 is an electrical circuit configuration diagram, Figure 10 is a time chart showing the operation, Figures 11 and 2 show the third embodiment, and Figure 11 is a longitudinal cross-section of the incinerator. The top view, Figure 12 is the electrical circuit configuration diagram, and Figures 13 to 1.
FIG. 5 shows the fourth embodiment, FIGS. 13 and 14 are longitudinal sectional views of the incinerator, and FIG. 15 is an electrical circuit configuration diagram.

Claims (6)

[Claims] (1) A switch means is provided in the connection path between the blower and the power source, which is operated by a means for detecting the combustion state in the furnace, such as a timer, temperature sensor, or smoke sensor, and the blower is turned on and off according to the combustion state in the furnace. An incinerator that can be turned off or switched between high and low. (2) The incinerator according to claim 1, wherein the switch means is operated by a temperature sensor and a smoke sensor, and turns on or strengthens the air blow only when both sensors satisfy predetermined conditions. (3) The incinerator according to claim 1, wherein the switch means is operated by a timer. (4) The incinerator according to claim 1, wherein the switch means is operated by a temperature sensor. (5) The incinerator according to claim 1, wherein the switch means is operated by a smoke sensor. (6) The incinerator according to claim 3, wherein the timer is reset when the door for opening and closing the garbage inlet is opened, and the timer is activated when the door is closed.