JPH11319785A - Garbage treatment machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage treatment machine for killing securely pathogenic microorganisms without lowering the garbage treatment capability. SOLUTION: A garbage treatment machine 1 is provided with a treatment tank 6 for decomposing garbage by microbes and turning the same into inorganic substances, a heater 18 and a temperature sensor 19 installed on the treatment tank 6 and a control device 35 for controlling the operation of the heater 18 in compliance with the temperature of garbage by using the temperature sensor 19. The temperature of garbage in the treatment tank 6 is kept at the temperature determined based on the difference in temperature dependence regarding the activity state between the pathogenic microorganisms and good microorganisms by the control device 35. Namely, the temperature of garbage sensed by the temperature sensor 19 is read by the control device 35 and, when the temperature is lower than the temperature of killing the pathogenic microorganisms, power is applied to the heater 18 to heat the garbage therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposer for converting garbage discharged from a kitchen at home into an inorganic substance using microorganisms.

[0002]

2. Description of the Related Art Raw garbage accounts for about half of the weight of garbage discharged from homes. Therefore, if raw garbage can be composted, not only the weight of the whole garbage can be significantly reduced, but also a part of the garbage can be reused as a fertilizer or a soil conditioner.

[0003] Therefore, a garbage disposer capable of easily treating and composting garbage at home has been conventionally marketed and developed. Most of the garbage processing machines are equipped with a processing tank and a stirring device. When using the garbage disposal machine, garbage and a bacterial bed are put into the treatment tank. The garbage and the bed are stirred by a stirrer to form a homogeneous mixture. The garbage is decomposed by microorganisms and turned into inorganic material.

[0004]

The microorganisms that decompose garbage may include not only benign microorganisms but also pathogenic microorganisms that harm the human body.
If this pathogenic microorganism survives even after mineralization,
It will be reduced to soil with compost. For this reason, it is desirable that the pathogenic microorganisms have been killed after processing the garbage. However, the above-mentioned conventional garbage processing machine does not take any measures for killing pathogenic microorganisms.

[0005] Therefore, an object of the present invention is to provide a garbage disposer capable of surely killing pathogenic microorganisms without reducing the ability to treat garbage.

[0006]

Means for Solving the Problems Here, as microorganisms involved in the conversion of garbage into inorganic substances, benign microorganisms that do not harm the human body and pathogenic microorganisms that do harm are included. The active state of is dependent on temperature. And
This temperature dependence differs between benign and pathogenic microorganisms. For example, pathogenic microorganisms generally die in an environment above a certain temperature, but the lowest temperature at the time of death (killing temperature) is the temperature at which the activity of benign microorganisms becomes inactive (lower than the kill temperature of benign microorganisms). Temperature). Therefore,
If the temperature of the garbage is maintained above the temperature at which the pathogenic microorganisms die, the pathogenic microorganisms will die but the benign microorganisms will survive unless the temperature exceeds the temperature at which the activity of the benign microorganisms becomes inactive . Garbage is mainly converted into inorganic material by benign microorganisms.

The first invention according to claim 1 has been made in view of the above circumstances, and is intended to decompose garbage by a group of microorganisms including pathogenic microorganisms and benign microorganisms into inorganic material. And a temperature maintaining means for maintaining the temperature of the garbage in the processing tank at or above a predetermined temperature determined based on a difference in the temperature dependence of the active states of the pathogenic microorganisms and the benign microorganisms.

According to the first aspect of the invention, the garbage introduced into the treatment tank is decomposed by the microorganisms and turned into an inorganic substance. On the other hand, the temperature of the garbage in the processing tank is maintained at a predetermined temperature or higher by the temperature maintaining means. The predetermined temperature is determined based on the difference in the temperature dependence of the active states of the pathogenic microorganism and the benign microorganism. Therefore, if the temperature at which only the pathogenic microorganisms are killed is set as the predetermined temperature, the temperature of the garbage is maintained at or above the predetermined temperature, whereby the pathogenic microorganisms are killed, and the benign microorganisms continue to survive and the garbage remains. Is converted into an inorganic material. The mineralization results in compost free of active (live) pathogenic microorganisms.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the temperature maintaining means includes a heating means for heating garbage in the processing tank, and a heating means for heating garbage in the processing tank. The apparatus includes temperature detecting means for detecting the temperature of the dust, and heating control means for controlling an operation state of the heating means in accordance with the temperature of the garbage detected by the temperature detecting means.

According to the second aspect, the temperature of the garbage is detected by the temperature detecting means when composting the garbage. The operation state (heating and heating stop) of the heating means is controlled by the heating control means according to the detected temperature of the garbage. With this control, the temperature of the garbage is maintained at or above the predetermined temperature. Therefore, the temperature of the garbage does not fall below a predetermined temperature even if the garbage is affected by a change in the fermentation temperature and a change in the temperature due to the decomposition of the garbage.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the temperature maintaining means comprises a stirring blade rotatably provided in the processing tank by a shaft, And a curved surface portion formed along a cylindrical surface centered on the axis of the stirring blade.

According to the third aspect, the garbage in the processing tank is stirred by the rotation of the stirring blade about the axis.
The curved surface part forming a part of the processing tank is formed along a cylindrical surface centered on the axis of the stirring blade. In other words, the distance between the outer end of the stirring blade (the point farthest from the axis) and the curved surface is substantially constant regardless of the rotation angle of the stirring blade.
For this reason, any garbage on any curved surface
The stirring force by the stirring blade is evenly applied. Then, the garbage is homogenized by the stirring performed in this manner, and the heat from the temperature maintaining means (the heating means in the second invention) is transmitted to the whole garbage. As a result, the temperature of any part of the garbage uniformly becomes equal to or higher than a predetermined temperature.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 3, the garbage disposer 1 includes a main body case 2 having a vertically long substantially rectangular parallelepiped shape. Upper surface 2a of main body case 2
Is formed in a gently convex curved surface such that its center is highest and becomes lower as it approaches the periphery. The upper front end (the left end in FIG. 3) of the main body case 2 is an eave portion 3 protruding forward from the front surface 2b of the main body case 2. Casters 4 are attached to the four corners at the bottom of the main body case 2, and handles 5 are provided on both sides 2 c of the main body case 2. The caster 4 may be provided with a lock mechanism.

As shown in FIG. 3 and FIG.
Inside, a bottomed treatment tank 6 for decomposing garbage into microorganisms by decomposing garbage by microorganisms is disposed. Processing tank 6
Has an input port 7 for garbage and a microbial bed at its upper part. An upper lid 8 for opening and closing the insertion port 7 is rotatably supported on the main body case 2 by a shaft 9. Support shafts 11 extending in a substantially horizontal direction are rotatably supported on left and right side walls of the processing tank 6. A plurality (four in the present embodiment) of stirring blades 12 are fixed to the outer periphery of the support shaft 11 at equal angles. Each stirring blade 12 is formed by bending a wire such as a pipe or a reinforcing bar on a plane including the support shaft 11, and is fixed to the support shaft 11 at both ends thereof by welding or other fixing means.

In the inner bottom of the main body case 2, the processing tank 6
A motor 13 is mounted below the motor. Motor 13
Is arranged in parallel with the support shaft 11. Sprockets 14 and 15 are attached to the ends of the support shaft 11 and the drive shaft 13a, respectively.
The chain 16 is hung. The sprockets 14, 15 and the chain 16 constitute a power transmission mechanism for transmitting the rotation of the motor 13 to the support shaft 11. As the power transmission mechanism, a combination of a pulley (timing pulley) and a belt (timing belt), a combination of gears, or the like may be used in addition to those described above.

The bottom of the processing tank 6 is constituted by a curved surface portion 17. The curved surface portion 17 has a substantially semicircular cross section along a cylindrical surface centered on the support shaft 11 of the stirring blade 12. A heater 18 as a heating means for heating by energization is attached to substantially the entire lower surface of the curved surface portion 17. The heater 18 may be attached to only a specific portion of the curved surface portion 17. Further, the number of heaters 18 may be plural, and in this case, it is desirable that these heaters 18 are arranged in a distributed manner. The heating means only needs to be able to heat the garbage in the processing tank 6, and may be a means for indirectly heating the garbage or a means for directly heating the garbage. The former type includes those that heat garbage through the treatment tank 6 and those that heat garbage using radiant heat.

A temperature sensor 19 as a temperature detecting means for detecting the temperature T of the garbage in the processing tank 6 is attached at a position slightly away from the heater 18 in the processing tank 6. The mounting position of the temperature sensor 19 is a position that is hardly affected by the heater 18 and that can reliably detect the temperature T of the garbage even when the amount of the garbage is small. In this embodiment, the heater 1
8 is selected about 5 cm away from the top. Further, a plurality of temperature sensors 19 may be used to improve the detection accuracy of the temperature T, and the detected values thereof may be processed (for example, an average value is calculated). If the detection accuracy of the temperature sensor 19 increases, unnecessary heating by the heater 18 is reduced,
The power consumption of the heater 18 can be reduced.

An intake duct 21 and an exhaust duct 22 are provided before and after the processing tank 6. The inlet of the air intake duct 21 has a horizontally long rectangular shape, and opens on the front surface 2 b of the main body case 2 directly below the eaves 3, and the outlet opens on the upper part of the processing tank 6. The inlet and outlet of the exhaust duct 22 are open at the upper portions of the processing tank 6 and the main body case 2. An exhaust fan 23 is disposed inside the exhaust duct 22, and a filter 24 made of a deodorant fiber is detachably mounted in front of the exhaust fan 23. At the entrance of the intake duct 21 and at the exit of the exhaust duct 22, insect repelling nets 25 are respectively set. Each insect repellent net 25 may be any as long as it has sufficient air permeability and can prevent invasion of insects such as insects.

As shown in FIGS. 2 and 3, at the rear of the curved portion 17, a discharge tube 26 for discharging the compost generated in the processing tank 6 to the outside of the garbage processing machine 1, and a discharge tube 26 for discharging the compost. An inner lid 27 for opening and closing the cylinder 26 is provided. The outlet of the discharge tube 26 has a horizontally long rectangular shape. The structure of the inner cover 27 may be any structure that can open and close the discharge tube 26, such as a structure that slides along the curved surface portion 17 and a structure that rotates by a shaft. The outlet of the discharge tube 26 is a mounting opening 26a for mounting a bag for storing compost, and a projection 26b is formed around the mounting opening 26a. At the rear of the main body case 2, the mounting opening 26
A take-out port 28 is opened at a location facing a, and an outer lid 29 is rotatably supported by a shaft 31. When the outlet 28 is closed, the outer lid 29 is
A lock fitting 32 for locking the main body case 2 to the main body case 2 is rotatably mounted. An operation knob 33 is provided on the locking bracket 32.
Are connected so as to be integrally rotatable.

Further, an operation box 36 having various switches such as a power switch 34 and a control device 35 is incorporated in a rear portion of the main body case 2. The temperature sensor 19, the motor 13, the heater 18, and the exhaust fan 23 are connected to the control device 35, respectively. The controller 35 controls the motor 13, the heater 18, and the exhaust fan 2 based on the detection value of the temperature sensor 19, the value of a built-in counter, and the like.
3 are controlled.

For example, the control device 35 controls the operation (rotation) of the motor 13 to rotate the stirring blade 12 according to a predetermined pattern. The set pattern is such that the stirring blade 12 is rotated rightward for 2 minutes every hour, and subsequently the stirring blade 12 is rotated leftward for 1 minute. Here, the direction of rotation of the stirring blade 12 is switched because even if the mixture of the garbage and the bacteria bed becomes clay-like and solidifies, the solidification is reversed by reversing the rotation direction to prevent sticking. To do that. Time from the stop of stirring to the start of the next stirring (stirring pause time)
The reason why is set to one hour is that if the stirring suspension time is shorter than this, for example, if it is about 30 minutes, the power consumption increases, although the effect of stirring is not so much improved, and conversely, it is longer than one hour. If it is long, for example, if it is 2 hours, the decomposition of garbage is delayed. Further, the control device 35 operates the exhaust fan 23 for a predetermined time every time a predetermined time elapses, and ventilates the inside of the processing tank 6.

Further, the control device 35 controls the temperature sensor 19
The operation (on / off) of the heater 18 is controlled according to the temperature T of the garbage. Here, “ON” means that the heater 18 is energized, and “OFF” means that the energization is stopped. The flowchart of FIG.
5 shows a routine for controlling the operation of the heater 18 among various processes executed by the control unit 5. This routine is for maintaining the temperature T of the garbage in the treatment tank 6 at a predetermined temperature or higher which is determined based on the difference in the temperature dependence of the active states of the pathogenic microorganisms and the benign microorganisms. Is executed each time a predetermined timing arrives (for example, every time a predetermined time elapses) after the ON operation of. Here, the difference in temperature dependence generally means that pathogenic microorganisms die in an environment above a certain temperature, but the lowest temperature at the time of this death (hereinafter referred to as “dead temperature”) is determined by the activity of benign microorganisms. Lower than the temperature at which it becomes inactive (lower than the temperature at which benign microorganisms die). The killing temperature of common pathogenic microorganisms is about 40 ° C. In order to maintain the temperature T of the garbage at or above the death temperature with the least possible power consumption, in the present embodiment, the lower limit value TL (=
40 ° C) and the upper limit value TH as the temperature to turn off
(= 45 ° C.). The lower limit value TL corresponds to the predetermined temperature.

When the heater control routine is started,
The control device 35 determines in step S10 that the temperature sensor 19
The temperature T of the garbage detected is read, and it is determined in step S20 whether the temperature T is lower than the lower limit value TL. This determination condition is satisfied (T <T
L), the heater 18 is turned on in step S30. This ON operation causes the heater 18 to generate heat, and the heat is transmitted to the garbage via the curved surface portion 17 and the temperature T rises.

On the other hand, if the condition of the step S20 is not satisfied (T ≧ TL), the step S40 is executed.
It is determined whether or not the temperature T is higher than the upper limit TH. If this determination condition is satisfied (T> TH), the heater 18 is turned off in step S50. This OFF operation stops the heat generation of the heater 18 and stops the transfer of heat from the heater 18 to the garbage. Step S30, S50
After the processing of (1) is executed, the heater control routine ends.
If the determination condition in step S40 is not satisfied (TL ≦ T ≦ TH), the heater control routine ends without performing the process in step S50. Therefore,
When the temperature T decreases and falls below the lower limit value TL, the heater 18 is turned on. Conversely, when the temperature T rises and exceeds the upper limit value TH, the heater 18 turns off. When the temperature T shifts to the range between the lower limit value TL and the upper limit value TH (TL ≦ T ≦ TH), the state in the previous temperature range (the previous temperature range is T <T
ON if L, OFF if T> TH). Unlike the case where one value is set as the temperature at which the heater 18 is turned on / off, the heater 18 does not turn on / off frequently due to the fluctuation of the temperature T.

In the present embodiment, the control device 35 and the processing of steps S20 and S30 in the heater control routine correspond to the heating control means. In addition, the heater 18, the temperature sensor 19, the stirring blade 1
The 2 and the curved surface portion 17 constitute a temperature maintaining means.

Next, the operation and effects of this embodiment including the control of the heater 18 will be described. When using the garbage processing machine 1, the user opens the top cover 8,
The garbage and the bacteria bed are put into the processing tank 6 through the, and the power switch 34 is turned on. The garbage is decomposed by microorganisms with the passage of time and turned into inorganic material. Fermentation proceeds with the decomposition, and the temperature T of the garbage fluctuates. Thereafter, raw garbage will be added, but the timing of the input is not particularly limited. In response to the ON operation of the power switch 34, the operation of the motor 13, the exhaust fan 23, and the heater 18 is controlled by the control device 35, respectively. Motor 13
The stirring blade 12 is rotated according to a predetermined pattern by the operation of the above, and the garbage and the bacteria bed in the processing tank 6 are stirred and mixed. By this stirring, oxygen is uniformly supplied to the garbage to promote fermentation, and the temperature T fluctuates.

On the other hand, by executing the heater control routine,
On / off of the heater 18 is controlled according to the temperature T of the garbage detected by the temperature sensor 19, and the temperature T of the garbage in the processing tank 6 is maintained at a lower limit value TL or higher. Therefore, the temperature T of the garbage does not fall below the lower limit value TL even if the garbage is affected by a change in the fermentation temperature accompanying the decomposition of the garbage or a change in the ambient temperature. Since the lower limit TL is determined based on the difference in the temperature dependence of the active state of the pathogenic microorganism and the benign microorganism, the pathogenic microorganism is killed, the benign microorganism continues to survive, actively decomposes garbage, and Materialize. The compost obtained by mineralization hardly contains any viable pathogenic microorganisms.

In particular, the stirring blade 12 in the processing tank 6 rotates about the support shaft 11 extending in a substantially horizontal direction, and stirs the garbage in the processing tank 6. At this time, the curved surface portion 17 of the processing tank 6
It has a substantially semicircular cross section along a cylindrical surface centered on the support shaft 11. In other words, the distance between the outer end of the stirring blade 12 (the point farthest from the support shaft 11) and the inner surface of the curved portion 17 is constant regardless of the rotation angle of the stirring blade 12. For this reason, if the bottom is non-curved, for example, if it has a rectangular box shape (the bottom is a flat surface), the garbage located near the corner of the bottom has a stirring force of the stirring blade 12. However, in the present embodiment, the agitation force is applied to the garbage located anywhere on the curved surface portion 17 substantially uniformly. Without the stirring power of the stirring blades 12,
Little garbage continues to adhere to the wall surface of the processing tank 6.
The garbage is homogenized by the stirring performed in this manner, and the heat from the heater 18 is transmitted to the entire garbage. Garbage near the heater 18 is concentrated and heated,
There is no deviation in the temperature distribution, and the temperature of any part of the garbage fluctuates uniformly within a predetermined temperature range. Therefore, the pathogenic microorganisms are affected by the heat of the heater 18 and die no matter where they are hidden in the garbage.

Even if an unusual odor is generated due to the fermentation of the garbage, the exhaust fan 23 operates to ventilate the inside of the processing tank 6. That is, by the operation of the exhaust fan 23,
The air outside the garbage disposer 1 is introduced into the treatment tank 6 through the intake duct 21, and the air in the treatment tub 6 is discharged out of the garbage disposer 1 through the exhaust duct 22. At the time of this discharge, air with an unpleasant odor passes through the filter 24, but particles of the odor are removed from the filter 24.
Is adsorbed by the deodorant fiber. For this reason, the air from which the off-flavor has been removed is discharged from the outlet of the exhaust duct 22.

When the compost is generated by the decomposition of the garbage, the user turns off the power switch 34 to stop the operation of the motor 13, the heater 18 and the exhaust fan 23 by the control device 35. Open the outer lid 29,
An empty bag (not shown) is put on the discharge tube 26, and the bag is locked to the discharge tube 26 by a rubber band or the like in front of the projection 26b. At this time, since the projection 26b functions as a stopper, the bag locked to the discharge tube 26 by the rubber band does not accidentally come off. When the inner lid 27 is opened in this state, the compost in the processing tank 6 is discharged through the discharge tube 26 and enters the bag without overflowing. At this time, the discharge cylinder 2
6 has a horizontally elongated rectangular shape,
Garbage in the processing tank 6 can be efficiently extracted from a wide range in the left-right direction. As described above, since there is almost no garbage remaining on the wall surface of the processing tank 6, the garbage can be easily taken out. After taking out all the compost, the inner lid 27 is closed. In this way, the compost can be packed in the bag without polluting the periphery of the garbage disposer 1 too much. Since the pathogenic microorganisms in the packed compost have died, the compost can be directly reduced to soil as a fertilizer, a soil conditioner, or the like. There is no need for a separate treatment to kill pathogenic microorganisms.

This embodiment has the following features in addition to the items described above.

(A) The upper surface 2a formed on the convex curved surface of the main body case 2 guides rainwater or the like dropped thereon to the peripheral portion to be dropped. For this reason, even if the garbage processing machine 1 is installed outdoors, it is possible to prevent rainwater or the like from remaining on the upper surface 2a or entering the inside of the main body case 2. The eaves 3 provided above the front surface 2 b of the main body case 2 prevent rainwater or the like from entering the processing tank 6 through the intake duct 21. Furthermore, the fact that the entrance of the intake duct 21 is opened in a horizontally long rectangular shape immediately below the eaves portion 3 is also effective in preventing rainwater from entering. This is because the lower edge portion of the entrance is closer to the eave portion than when the entrance has another shape, for example, a square shape.

(B) The insect repelling nets 25 respectively set at the entrance of the intake duct 21 and the exit of the exhaust duct 22 are:
Insects and the like are prevented from entering the intake duct 21 and the exhaust duct 22. Therefore, insects and the like are attracted by the odor generated by the garbage in the processing tank 6, and the insects and the like are attracted to the intake duct 2.
1 and the exhaust duct 22 to enter the treatment tank 6 and lay eggs in the garbage, thereby preventing unsanitary conditions.

(C) The deodorizing effect of the deodorizing fibers constituting the filter 24 generally lasts longer than that of activated carbon. Therefore, the service life of one filter 24 is long, and the frequency of replacement of the filter 24 can be reduced.

(D) The exhaust duct 22 in which the filter 24 is mounted is located at the upper part of the garbage disposal machine 1, so that the garbage does not easily come into contact with the filter 24. For this reason, it is unlikely that the exhaust duct 22 is buried by the input garbage or the filter 24 comes off the exhaust duct 22 due to contact with garbage or the like flowing by stirring.
In addition, since the filter 24 is located near the inlet 7, the filter 24 can be easily replaced while the inlet 7 is open.

(E) The outer lid 29 opens and closes the outlet 28 by being rotated about the shaft 31 as a fulcrum. Moreover,
An operation knob 33 and a latch 32 are attached to the outer lid 29. For this reason, it is composed of another type, for example, a plate-shaped outer lid, and a fastening member such as a plurality of screws.
When the opening 8 is opened, all the fastening members are loosened and the outer lid is removed from the main body case, and when the opening 28 is closed, the operation required for opening and closing the opening 28 is smaller than that of the type in which all the fastening members are tightened. Easy. Operation knob 3 with one hand
These operations can be performed with the user holding the button 3.

(F) Each of the stirring blades 12 is disposed on a plane including the support shaft 11 and is fixed to the support shaft 11 at both ends, so that there are few elements and places where garbage is involved. For this reason, it is difficult for garbage, especially fibrous materials, to be entangled with the stirring blades 12 so that stirring is not performed sufficiently or that an excessive load is applied to the stirring blades 12.

(G) Since the casters 4 are attached to the bottom of the main body case 2, the casters 4 are rolled simply by pushing or pulling the garbage disposer 1, so that the garbage disposer 1 can be moved to a desired position. It can be easily moved to a place with little force. Further, if the caster 4 having a lock mechanism is installed at a desired position and the rolling of the caster 4 is stopped by the lock mechanism, it is possible to prevent the garbage processing machine 1 from inadvertently moving.

(H) The eaves portion 3 provided immediately above the inlet of the intake duct 21 may adhere to the insect repellent net 25 when a part of the garbage is accidentally thrown forward from the inlet 7. To prevent the air from entering the intake duct 21. This effect is particularly large in the case of the garbage processing machine 1 in which the input port 7 is small and the garbage is hard to be input.

The present invention can be embodied in another embodiment described below.

(1) The rotation pattern of the stirring blade 12, such as the stirring pause time, the number of rotations (rotation speed) of the stirring blade 12, the rotation direction of the stirring blade 12 (including the order of switching the rotation direction), etc. The pattern may be changed to a different pattern from the above embodiment.

(2) The shape, number, size, etc. of the stirring blades 12 may be changed as appropriate. In addition, the spindle 1 in the above embodiment
1 may be erected. In this case, it is preferable that a portion corresponding to the periphery of the support shaft 11 in the processing tank 6 be a cylindrical curved surface portion centered on the support shaft 11.

(3) The positions and shapes of the components of the garbage disposer 1, for example, the intake duct 21, the exhaust duct 22, and the discharge tube 26 may be changed as appropriate.

(4) In consideration of the ease of taking out the compost, even when the power switch 34 is turned off, the stirring blade 12 can be forcibly rotated little by little by operating another switch. Is also good.

(5) The temperature at which the heater 18 is turned on and off may be appropriately changed according to the type of the pathogenic microorganism. In particular, the temperature at which the benign microorganism is turned off may be a value within a range that does not decrease the activity of the benign microorganism or kill the benign microorganism.

[0046]

As described above, according to the first invention, pathogenic microorganisms can be reliably killed without reducing the ability to treat garbage.

According to the second invention, by controlling the operation of the heating means, the temperature of the garbage to be treated is prevented from falling below a predetermined temperature, and the effect of the first invention is reliably achieved. be able to.

According to the third aspect, the rotation of the stirring blade and the curved surface of the processing tank make it possible to transmit heat evenly to the whole of the garbage, thereby further improving the effect of the first or second aspect. It can be assured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a garbage disposer according to an embodiment of the present invention.

FIG. 2 is a rear view of the garbage processing machine of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is a flowchart illustrating a heater control routine executed by the control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Garbage disposal machine 6 Processing tank 11 Support shaft 12 Stirring blade which comprises a part of temperature maintenance means 17 Curved surface part which constitutes a part of temperature maintenance means 18 Composes a part of temperature maintenance means and comprises a heating means A heater 19 which constitutes a part of the temperature maintaining means and a temperature sensor which constitutes a temperature detecting means 35 a control device which constitutes a part of the temperature maintaining means and constitutes a heating control means T garbage temperature TL as a predetermined temperature lower limit

Claims (3)

[Claims] 1. A treatment tank for decomposing garbage by a group of microorganisms including pathogenic microorganisms and benign microorganisms to convert the garbage into an inorganic material, wherein the temperature of the garbage in the treatment tank is controlled by the pathogen and benign microorganisms. A garbage disposal machine comprising: temperature maintaining means for maintaining a temperature equal to or higher than a predetermined temperature determined based on a difference in temperature dependence with respect to an active state. 2. The temperature maintaining means includes: heating means for heating the garbage in the processing tank; temperature detecting means for detecting the temperature of the garbage in the processing tank; The garbage processing machine according to claim 1, further comprising a heating control unit that controls an operation state of the heating unit according to a temperature. 3. The temperature maintaining means comprises: a stirring blade rotatably provided in the processing bath by a shaft; and a part of the processing bath, wherein the temperature maintaining means is centered on an axis of the stirring blade. The garbage disposal machine according to claim 1, further comprising a curved surface formed along a cylindrical surface.