JP3778859B2 - Organic matter processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an organic matter processing apparatus for decomposing organic matter such as garbage by a microbial decomposition method.
[0002]
[Prior art]
As this type of organic matter processing apparatus, Japanese Patent Application Laid-Open No. 2001-137808 discloses a treatment tank for decomposing an organic substance charged in a main body, an agitator provided in the treatment tank so as to be able to rotate forward and backward, Disclosed is a heat source provided on the side surface of the tank, a heating element provided on the bottom surface of the treatment tank for heating the inside of the treatment tank, and a moisture sensor composed of a temperature sensor for detecting the temperature in the treatment tank. Has been.
[0003]
This organic matter treatment apparatus maintains a temperature range (between 40 ° C. and 60 ° C.) suitable for decomposition by microorganisms with a heat source, and the contents in the treatment tank are given for a predetermined period of time by a stirrer. By stirring, the organic matter contained in the storage is decomposed into carbon dioxide and water by microorganisms and composted. Simultaneously with the composting, the water contained in the stored items is evaporated, and the exhausted gas containing the evaporated moisture and the carbon dioxide is exhausted to the outside by an exhaust fan.
[0004]
During this operation, the heating element of the moisture content sensor is energized every predetermined time, and the temperature sensor of the moisture content sensor detects the initial temperature before energization and the temperature after energization of the heating element. The temperature rise value is calculated by subtracting the initial temperature from the temperature. The moisture content is detected based on this temperature rise value, but even if the moisture content is the same, if the initial temperature is high, the temperature does not easily rise, and if the initial temperature is low, the temperature tends to rise. Table data is created based on the initial temperature and the temperature rise value, and the moisture content is detected based on the table data.
[0005]
And when the detected moisture content is an appropriate moisture content (between 35% and 50% here), the heat source and the exhaust fan are energized with a preset standard energization amount, and the stirrer is turned on. The operation is stopped for a predetermined time set in advance and the operation is performed for a predetermined time to maintain the moisture content in the treatment tank.
[0006]
When the detected moisture content is higher than the appropriate moisture content, the heat source and the exhaust fan are energized more than the standard energization amount to increase the heat generation amount by the heat source and the air volume by the exhaust fan, and the stirring body is stopped. A strong operation of stirring the stored items frequently by shortening the time is performed to evaporate more of the water generated from the stored items in the treatment tank and discharge it to the outside to reduce the moisture content.
[0007]
On the contrary, when the detected moisture content is low, the heat source and the exhaust fan are energized less than the standard energization amount to reduce the heat generation amount by the heat source and the air amount by the exhaust fan, and the time for stopping the stirring body is set. A weak operation is performed to lengthen and reduce the frequency of stirring the stored item, and the moisture content generated from the stored item in the treatment tank is suppressed to increase the moisture content.
[0008]
As described above, the stored contents are decomposed by microorganisms by selecting an operation mode (strong, medium, or weak operation) that increases, decreases, or maintains the moisture content in the treatment tank according to the detected moisture content. It was possible to quickly make it suitable for processing.
[0009]
However, when the moisture content is detected by the moisture content sensor, it is performed in a state where the stored item in the treatment tank is heated by the heat source. Therefore, the temperature sensor senses the heat of the heat source through the treatment vessel or the contained item. to be influenced. And during strong operation with a large amount of electricity to the heat source, the temperature of the stored item becomes high and it is difficult to increase the temperature even if the moisture content is the same. During a weak operation with a small amount of energization to the heat source, the temperature of the stored item is low, and the temperature of the stored item is likely to rise, and the moisture content is detected to be low. In this way, depending on the operation mode with different energization amounts to the heat source, even if the moisture content is the same, the moisture content is detected at a high level, or it is detected at a low level, causing a problem that it cannot be accurately detected. .
[0010]
As a countermeasure, in order to avoid the influence of the heat source, it is conceivable to shut off the power supply to this heat source and detect the moisture content in the treatment tank with a moisture content sensor after a lapse of a certain time. There is a problem that the operation cannot be performed and the processing efficiency of the organic matter is lowered.
[0011]
[Problems to be solved by the invention]
This invention makes it a subject to provide the organic substance processing apparatus which can detect a moisture content correctly, preventing the fall of processing efficiency.
[0012]
[Means for Solving the Problems]
The first means for solving the above problems includes a treatment tank for decomposing organic matter such as garbage to be input, a heat source for maintaining the contents stored in the treatment tank in a predetermined temperature range, and the inside of the treatment tank. The moisture content sensor for detecting the moisture content by detecting the temperature rise value of the stored item in the treatment tank when the stored item is heated, and the evaluation of the moisture content detected by the moisture content sensor are used as the heat source. And a correcting unit that corrects according to the energized amount.
[0013]
The said structure WHEREIN: The said correction | amendment means correct | amends the said moisture content based on the table data set according to the temperature rise value detected with the moisture content sensor and the energization amount to the said heat generating body.
[0014]
The correction means corrects a threshold value that serves as a reference for evaluating the moisture content of the stored item in accordance with an energization amount of the heat source.
[0015]
Moreover, the said correction | amendment means correct | amends the temperature rise value detected by the said moisture content sensor according to the energization amount of the said heat source.
[0016]
Further, a control means for controlling the heat source based on the evaluation corrected by the correction means is provided.
[0017]
Further, an exhaust fan that exhausts exhaust gas generated in the processing tank to the outside of the main body and a control unit that controls the exhaust fan according to the evaluation corrected by the correction unit are provided.
[0018]
Moreover, the stirring body provided in the said processing tank, and the control means which controls the stirring frequency of the said stirring body according to the correction value correct | amended by the said correction means are provided.
[0019]
The moisture content sensor detects an initial temperature before heating the stored item in the treatment tank, and the correction means corrects the evaluation of the moisture content according to the initial temperature.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
An organic matter processing apparatus according to a first embodiment of the present invention will be described with reference to FIGS.
[0021]
The organic matter processing apparatus accommodates a microbial carrier (woody pieces such as sawdust), and a treatment tank 1 having an upper surface opening into which organic matter such as garbage is placed is accommodated in an outer case 2 composed of two upper and lower parts. It is configured. The processing tank 1 is an injection-molded product made of resin, and as shown in FIG. 1, the side wall of the processing tank 1 is formed narrower as it goes to the lower part because a draft angle is required for molding, while viewed from the front-rear direction. As shown in FIG. 2, the lower half is formed in an arc shape in accordance with the rotation trajectory of a stirring blade described later.
[0022]
The upper surface of the outer case 2 is opened corresponding to the upper surface opening 3 of the treatment tank 1, and an input port 4 for inputting a microorganism carrier, garbage, etc. is formed. The lid 5 is configured so as to be freely opened and closed.
[0023]
In the treatment tank 1, a stirring body including a plurality of stirring blades 6 and a stirring shaft 7 on which the stirring blades 6 are erected is provided between front and rear walls so as to be able to rotate forward and backward. The agitation shaft 7 is supported at both ends by bearings 8 and 9 formed on the front and rear walls of the treatment tank 1, and the shaft end 10 on the rear wall side has a large gear 11a, an intermediate gear 11b, and a small gear as shown in FIG. It is connected to a stirring motor 12 that drives forward and reverse rotation through a speed reduction mechanism 11 comprising a gear 11c, a large pulley 11d, and a small pulley 11e, and the rotation of the stirring motor 12 is reduced and transmitted to be driven forward and reverse. It is like that.
[0024]
The agitation motor 12 and the medium gear 11b, the small gear 11c, the large pulley 11d and the like constituting the speed reduction mechanism 11 are attached to a metal frame 13 fixed to the outer surface of the rear wall of the processing tank 1. The drive mechanism mounting frame 13 is fixed to a truncated cone-shaped mounting member 14 disposed on the inner surface side of the processing tank 1 by screwing from the side on which the speed reduction mechanism 11 is fixed.
[0025]
A rear wall bearing 9 is formed at the center of the fixing member 14. The fixing member 14 is made of Duracon resin that has excellent wear resistance and good sliding properties. Therefore, it functions well as a bearing and does not stick to the surface of the fixing member 14 due to adhesion of microbial carriers, garbage, or the like.
[0026]
And the moisture content sensor 15 is attached to the outer bottom part of the processing tank 1 so that it may be located just under the stirring shaft 7 near the rear wall, that is, at the lowest part of the arc shape. As shown in an enlarged view in FIG. 3, the moisture content sensor 15 has a gap of about 3 mm between the heating element 16 and the center of the heating element 16 formed by arranging a plurality of chip resistors on an aluminum substrate, for example. In order to provide, a thermistor (temperature sensor) 18 is arranged with a sponge 17 such as foamed silicon interposed. By interposing a sponge 17 such as foamed silicon between the heating element 16 and the thermistor 18, the heat of the heating element 16 is prevented from being directly transferred to the thermistor 18, and the thermistor 18 is in close contact with the back side of the treatment tank 1. Is configured to do.
[0027]
The moisture content sensor mounting surface of the treatment tank 1 is formed thinner than others so that radiant heat from the heating element 16 can be easily transmitted to the treatment tank 1 and the temperature in the treatment tank 1 is easily detected. Yes. Specifically, as shown in FIG. 3, the original thickness of the processing tank 1 is about 3 mm by forming the moisture content sensor mounting surface in a planar shape with respect to the arc-shaped bottom surface of the processing tank 1. On the other hand, the mounting surface is about 1 mm to 2.5 mm, and the contact surface of the thermistor 18 is the thinnest so that the temperature in the processing tank 1 can be detected more easily.
[0028]
The moisture content sensor 15 excluding the mounting surface side is covered with a resin sensor cover 19 having heat insulation properties such as polypropylene. Further, the outer surface side is covered with a reflecting member 20 such as aluminum foil and a heat insulating material 21 such as foamed resin or glass wool. The reflection member 20 is mainly for preventing the radiant heat of the heating element 16 from escaping to the outside, and the heat insulating material 21 is mainly provided for preventing the influence of the outside air temperature. By comprising as mentioned above, heat can be efficiently transmitted in the processing tank 1, and an exact moisture content can be detected.
[0029]
The moisture content sensor 15 is controlled by a control unit which will be described later. The temperature t0 of the stored item in the treatment tank before the heating element 16 is energized and the temperature t1 when the heating element 16 is energized for a predetermined time (here, 20 minutes). Is detected by the thermistor 18, and the detected initial temperature t0 and temperature t1 are output to the control unit. The controller subtracts the initial temperature t0 from the temperature t1 when energized for a predetermined time to calculate a temperature increase value Δt that is a reference for calculating the moisture content.
[0030]
On the other hand, on the upper side of the speed reduction mechanism 11, a control board 30 on which a control unit composed of a microcomputer is mounted is attached. This control unit is operated by PWM control so that the planar heater 31 and the exhaust fan 34 are operated with a standard energization amount and the agitating motor 12 is operated for a predetermined time every standard period, and the planar heater 31 and the exhaust fan 34. The stirrer 12 is operated with a larger amount of energization than the standard and the agitation motor 12 is operated for a predetermined time every cycle shorter than the standard cycle, and the planar heater 31 and the exhaust fan 34 are operated with a smaller amount of energization than the standard. The motor 12 can be operated for a predetermined time every period longer than the standard period.
[0031]
A microcomputer (not shown) is mounted on the control board 30. In the nonvolatile memory of this microcomputer, the temperature rise value Δt for detecting the moisture content is changed to an operation mode (strong operation, medium operation, weak operation) in which the energization amount to the planar heater 31 is changed, and an initial temperature t0. Table data (shown in FIG. 8 to FIG. 10) created based on experimental data in consideration of changes depending on the data is stored.
[0032]
Specifically, even if the temperature rise value Δt for detecting the moisture content is the same moisture content, if the initial temperature t0 is high, the temperature rise value Δt is low, and if the initial temperature t0 is low, the temperature rise value Δt is high. Since there is a tendency, the temperature rise value Δt ranges from the initial temperature t0 in four stages: t0 ≦ 15 ° C., 15 ° C. <t 0 ≦ 30 ° C., 30 ° C. <t 0 <45 ° C., t 0 ≧ 45 ° C. The threshold values of “high”, “optimum”, and “low” in water content (for example, when t0 ≦ 15 ° C., 37 ° C. and 44 ° C. during medium operation) are lowered as the initial temperature t 0 increases It is set to be.
[0033]
Further, during a strong operation with a large amount of energization to the planar heater 31, the temperature of the stored item becomes high, and even if the moisture content is the same, the temperature of the stored item is difficult to increase (the temperature rise value Δt is low), and the moisture content is reduced. In contrast, the temperature of the stored item is low and the temperature of the stored item is likely to rise (the temperature rise value Δt is high) and the moisture content is low. A data table is created for each operation mode in consideration of detection at a lower level. Then, the range of the temperature rise value Δt (upper limit value or lower limit value) is set to a standard value in the case of table data for medium operation (FIG. 10), and the temperature rise value Δt is equal to that during the middle operation even if the water content is the same. In the data table for strong operation detected in a lower level (FIG. 8), the temperature increase value Δt is set to be low, and the data for weak operation in which the temperature increase value Δt is detected higher than in the middle operation even at the same moisture content. In the table (FIG. 9), the temperature rise value Δt is corrected to be high.
[0034]
Further, planar heaters 31 are mounted on the upper and lower sides of the front wall and both side walls of the processing tank 1, and the inside of the processing tank 1 is used by using a thermistor (not shown) installed in the planar heater 31 by the control unit. Is maintained within a temperature range suitable for microbial activation (about 40 ° C. to 60 ° C.).
[0035]
Further, an exhaust hole 33 in which an exhaust filter 32 is mounted is formed in the upper rear wall of the processing tank 1, and an exhaust fan 34 is attached downstream thereof as shown in FIG. Further, on the downstream side of the exhaust fan 34, switching is possible to switch between a first exhaust passage 35 to which a deodorizing device 38 described below is attached and a second exhaust passage 36 for directly discharging exhaust gas to the outside. A valve 37 is provided.
[0036]
In the deodorizing device 38 attached to the first exhaust passage 35, a heater 39 is disposed on the upstream side, and a catalyst 40 formed of a ceramic in a honeycomb structure is disposed on the downstream side, and they have heat resistance and corrosion resistance. It is stored in a metal cylinder 41 such as stainless steel. Thus, the inflowing exhaust gas is heated by the heater 39, and the heated exhaust gas passes through the catalyst 40, whereby the catalyst 40 is heated and the decomposition reaction of malodorous components contained in the exhaust gas is promoted. It has become.
[0037]
As shown in FIG. 6, the outlet side of the deodorizing device 38 is connected to an exhaust port 42 that opens in the lower part on the back side of the exterior case 2. A dilution fan 43 for diluting the temperature and odor of the high-temperature exhaust gas discharged from the deodorizing device 38 is attached to the exhaust port 42.
[0038]
On the other hand, the second exhaust passage 36 communicates with an exhaust port 44 opened on the back side of the exhaust fan 34, that is, on the back side of the exterior case 2.
[0039]
In addition, an intake port 45 for taking in outside air is formed on the bottom surface side of the exterior case 2, and the outside air taken in from the intake port 45 passes through a gap between the exterior case 2 and the treatment tank 1, The gas is taken into the processing tank 1 through an intake hole 46 formed in the upper side wall of the processing tank 1.
[0040]
Further, as shown in FIG. 1 and FIG. 4, a discharge port 47 for the processed material (compost) accommodated inside is opened at the bottom of the processing tank 1 by a drawer-type shutter 48 so as to be freely opened and closed. A discharge chute 49 that is inclined toward the front is integrally formed at the bottom of the outer case 2 below the discharge port 47. By pulling out the shutter 48, the compost is disposed on the front side of the outer case 2 through the discharge chute 49. The processed product can be taken out.
[0041]
Next, the operation of the organic matter processing apparatus will be described based on the flowchart shown in FIG. 7 and the moisture content tables shown in FIGS.
[0042]
When this apparatus is used, a certain amount of microbial carrier (wood chips such as sawdust) is put in the treatment tank 1 in advance. And when processing organic substances, such as garbage, the cover body 5 is opened, organic substances, such as garbage, are thrown into the processing tank 1 from the insertion port 4, and the cover body 5 is closed. When the lid 5 is closed, this is detected by a detection means (not shown), and the output is output to the control unit. In response to this output, the control unit first performs a middle operation.
[0043]
When the stirring motor 12 is energized, the stirrer rotates forward and reverse for a standard time (here 2 minutes) every standard cycle (here 30 minutes) to stir and mix the carrier and the organic substance, and to the planar heater 31. The organic matter is decomposed into carbon dioxide and water by the microorganisms cultured on the carrier by the energization control, and composted.
[0044]
Then, by energizing the exhaust fan 34, the humid air in the processing tank 1 is discharged to the outside with a standard air volume, and the inside of the processing tank 1 is prevented from being in a high humidity state. As it is discharged to the outside, fresh outside air is taken into the case from the air inlet 45 formed at the bottom of the outer case 2, and the activity of microorganisms is introduced into the processing tank 1 from the air inlet 46 formed at the top of the processing tank 1. Supply oxygen necessary for chemical conversion.
[0045]
When a deodorizing button (not shown) is pressed by the user during this operation, the control unit switches the switching valve 37 from the state shown in FIG. 4 so as to close the second exhaust passage 36 and energizes the heater 39 of the deodorizing device 38. At the same time, the dilution fan 43 is energized, and the exhaust gas from the processing tank 1 flows into the first exhaust passage 35 where the deodorizing device 38 is provided. The exhaust gas flowing in the first exhaust passage 35 is deodorized by the deodorizing device 38 and exhausted to the outside from the exhaust port 42.
[0046]
Then, the controller determines whether or not a predetermined time T1 (2 hours in this case) has elapsed since the operation was started (step S1). If not, the process returns to step S1, and if it has elapsed, It transfers to step S2 and it is judged whether predetermined time T2 passed after completion | finish of stirring. If the predetermined time T2 has not elapsed, the process returns to step S1, and if it has elapsed, the process proceeds to step S3 to start processing for detecting the following moisture content. As a result, the water content can be detected after the contents in the treatment tank 1 are stirred and homogenized, and the water content can be detected more accurately.
[0047]
In step S3, the thermistor 18 of the moisture content sensor 15 detects the initial temperature t0 before energization of the heating element 16, and outputs the detected initial temperature t0 to the control unit. And in step S4, it supplies with electricity to the heat generating body 16 of the moisture content sensor 15, and transfers to step S5.
[0048]
In step S5, it is determined whether or not a predetermined time T3 (here, 20 minutes) has elapsed since the heating element 16 is energized. If not, the process returns to step S1, and if it has elapsed, the process returns to step S6. The thermistor 18 of the moisture content sensor 15 detects the temperature t1 of the stored item in the processing tank 1, and outputs this temperature t1 to the control unit. In step S7, the power supply to the heating element 16 is cut off.
[0049]
In step S8, the temperature rise value Δt is calculated from the initial temperature t0 and the temperature t1 when the T3 heating element 16 is energized for a predetermined time, and the process proceeds to step S9.
[0050]
In step S9, it is determined whether or not the current operation mode is a strong operation. If the operation is a strong operation, the table data with the temperature rise value Δt corrected for the strong operation shown in FIG. Read from the memory and proceed to step S10.
[0051]
In step S10, the water content of the storage in the processing tank 1 is in an appropriate state (between 35% and 50% water content) based on the initial temperature t0 and the temperature rise value Δt based on table data during strong operation. It is evaluated whether it is in a high state (moisture content is 50% or more) or low (moisture content is 35% or less), and the process proceeds to step S11.
[0052]
Specifically, when the initial temperature t0 is 15 ° C. or less, when the temperature rise value Δt is 33 ° C. or less, the moisture content is 50% or more and the moisture content is high, and the temperature rise value Δt is higher than 33 ° C. and 40 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 40 ° C. or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0053]
When the initial temperature t0 is higher than 15 ° C and lower than 30 ° C, when the temperature increase value Δt is 29 ° C or lower, the water content is 50% or higher and the water content is high. The temperature increase value Δt is higher than 29 ° C and higher than 37 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate. When the temperature rise value Δt is 37 ° C. or more, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0054]
When the initial temperature t0 is higher than 30 ° C and lower than 45 ° C, when the temperature increase value Δt is 25 ° C or lower, the water content is 50% or higher and the water content is high. The temperature increase value Δt is higher than 25 ° C and higher than 34 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 34 ° C. or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0055]
When the initial temperature t0 is higher than 45 ° C, when the temperature rise value Δt is 24 ° C or lower, the moisture content is 50% or higher and the moisture content is high, and when the temperature rise value Δt is higher than 24 ° C and lower than 33 ° C, When the moisture content is between 35% and 50%, the moisture content is moderate, and when the temperature rise value Δt is 33 ° C. or higher, the moisture content is 35% or less and the moisture content is low. To do.
[0056]
If the current operation mode is not a strong operation in step S9, the process proceeds to step S12 to determine whether or not the current operation mode is a weak operation. If the current operation mode is a weak operation, the weak operation shown in FIG. The table data in which the temperature rise value Δt is corrected as described above is read out from the nonvolatile memory of the microcomputer of the control unit, and the process proceeds to step S13.
[0057]
In step S13, when the detected initial temperature t0 is 15 ° C. or less, the moisture content is 50% or higher and the moisture content is high when the temperature rise value Δt is 42 ° C. or less, and the temperature rise value Δt is higher than 42 ° C. When the water content is lower than 49 ° C., the water content is moderate between 35% and 50%, and when the temperature rise value Δt is 49 ° C. or higher, the water content is less than 35% and the water content is low. Then, the process proceeds to step S11.
[0058]
When the initial temperature t0 is higher than 15 ° C and lower than 30 ° C, when the temperature increase value Δt is 38 ° C or lower, the water content is 50% or higher and the water content is high, and the temperature increase value Δt is higher than 38 ° C and 46 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 46 ° C. or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0059]
When the initial temperature t0 is higher than 30 ° C and lower than 45 ° C, when the temperature increase value Δt is 34 ° C or lower, the water content is 50% or higher and the water content is high, and the temperature increase value Δt is higher than 34 ° C and higher than 43 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 43 ° C or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0060]
When the initial temperature t0 is higher than 45 ° C., the moisture content is 50% or higher when the temperature rise value Δt is 33 ° C. or less, and the moisture content is high when the temperature rise value Δt is higher than 33 ° C. and lower than 42 ° C. When the rate is 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 42 ° C. or higher, the moisture content is judged to be 35% or less and the moisture content is low, and the process proceeds to step S11. To do.
[0061]
If it is determined in step S12 that the operation is not weak, that is, the vehicle is in the middle operation, the table data for the intermediate operation shown in FIG. 10 is read from the nonvolatile memory of the microcomputer of the control unit in step S14, and the process proceeds to step S14.
[0062]
In step S14, when the detected initial temperature t0 is 15 ° C. or lower, when the temperature increase value Δt is 37 ° C. or lower, the water content is 50% or higher and the water content is high, and the temperature increase value Δt is higher than 37 ° C. When the water content is lower than 44 ° C., the water content is moderate between 35% and 50%, and when the temperature rise value Δt is 44 ° C. or higher, the water content is 35% or less and the water content is low. Then, the process proceeds to step S11.
[0063]
When the initial temperature t0 is higher than 15 ° C and lower than 30 ° C, when the temperature increase value Δt is 33 ° C or lower, the water content is 50% or higher and the water content is high. The temperature increase value Δt is higher than 33 ° C and higher than 41 ° C. When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 41 ° C. or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0064]
When the initial temperature t0 is higher than 30 ° C and lower than 45 ° C, when the temperature increase value Δt is 29 ° C or less, the water content is 50% or higher and the water content is high, and the temperature increase value Δt is higher than 29 ° C and 38 ° C When the moisture content is lower than 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 38 ° C. or higher, the moisture content is 35% or less and the moisture content is low. The process proceeds to step S11.
[0065]
When the initial temperature t0 is higher than 45 ° C., the moisture content is 50% or higher when the temperature rise value Δt is 28 ° C. or less, and the moisture content is high, and when the temperature rise value Δt is higher than 28 ° C. and lower than 37 ° C. When the rate is 35% to 50%, the moisture content is moderate, and when the temperature rise value Δt is 37 ° C. or higher, the moisture content is 35% or less and the moisture content is low, and the process proceeds to step S11. To do.
[0066]
In step S11, according to the determined moisture content, when the moisture content is high, a strong operation is set, and when the moisture content is moderate, a medium operation is set, and when the moisture content is low. Is set to weak driving and the process returns to step S1.
[0067]
When the strong operation is set in Step 11, the energization amount of the planar heater 31 and the energization amount of the exhaust fan 34 are increased, and the stirring blade 6 is stopped for a shorter time and the stirring is performed more frequently. The operation is started, moisture and the like generated by the organic substance decomposition process are easily evaporated, and the moisture content of the stored items in the treatment tank 1 can be reduced.
[0068]
Further, when the weak operation is set, the amount of energization of the planar heater 31 and the amount of energization of the exhaust fan 34 is reduced, and the time during which the stirring blade 6 is stopped is lengthened to reduce the frequency of stirring. Is started, the evaporation of moisture generated by the decomposition treatment of the organic matter can be suppressed, and the moisture content of the stored matter in the treatment tank 1 can be increased.
[0069]
Further, when the medium operation is set, the operation of stirring the stirring blade 6 at a standard frequency is started while the energization amount of the planar heater 31 and the energization amount of the exhaust fan 34 are standardized, and the organic substance decomposition treatment is started. As a result, the water generated by the water evaporates moderately, and the moisture content of the stored items in the treatment tank 1 can be maintained within a proper range.
[0070]
When determining these operations, a data table in which the temperature rise value Δt is corrected as described above is created for each operation mode (strong, medium, weak fortune), and this data table is selected according to the current operation mode. By doing so, even if the moisture content is the same, the moisture content is not detected high or low depending on the current operation mode, that is, the energization amount (heat generation amount) of the planar heater 31. The moisture content can be more accurately evaluated regardless of the energization amount of the heater 31. Thereby, based on the detected moisture content, it is possible to appropriately set the operation for decreasing the moisture content, the operation for increasing the moisture content, and the operation for maintaining it, and it is possible to reliably operate so as to be within an appropriate moisture content range. it can.
[0071]
Further, considering that the temperature rise value Δt for obtaining the moisture content varies depending on the initial temperature t0 even at the same moisture content, as shown in the above data table, the same moisture content range (for example, 35%) To 50%), the moisture content can be calculated more accurately by correcting to a lower value (lower limit value and lower limit value) as the initial temperature t0 becomes higher.
[0072]
In addition, after the previous moisture content is detected and the predetermined time T1 has elapsed, the initial temperature t0 in the moisture content sensor 15 is detected, so that the heating tank 16 of the previous moisture content sensor 15 can detect the treatment tank 1. It is possible to prevent the influence of heating the stored item from reaching the current initial temperature t0.
[0073]
In the first embodiment, the data table for calculating the moisture content is set according to the operation mode, but the data table is set according to the current energization amount to the planar heater 31. You may do it.
[0074]
Next, a second embodiment of the present invention will be described with reference to the flowchart of FIG. 11 and FIGS.
[0075]
As in the first embodiment, the control unit determines whether a predetermined time T1 has elapsed after the start of operation (step S21). If not, the process returns to step S21. Shifts to step S22 to determine whether or not a predetermined time T2 has elapsed after the completion of stirring. If the predetermined time T2 has not elapsed, the process returns to step S21, and if it has elapsed, the process proceeds to step S23 to start processing for detecting the following moisture content.
[0076]
In step S23, the thermistor 18 of the moisture content sensor 15 detects the initial temperature t0 before energization of the heating element 16, and outputs the detected initial temperature t0 to the control unit. And in step S24, it supplies with electricity to the heat generating body 16 of the moisture content sensor 15, and transfers to step S25.
[0077]
In step S25, it is determined whether or not a predetermined time T3 (20 minutes as in the first embodiment) has elapsed since the heating element 16 is energized. If not, the process returns to step S21. If it has elapsed, the temperature t1 of the stored item in the processing tank 1 is detected by the thermistor 18 of the moisture content sensor 15 in step S26, and this temperature t1 is output to the control unit. In step S27, the power supply to the heating element 16 is cut off.
[0078]
In step S28, a temperature increase value Δt is calculated from the initial temperature t0 and the temperature t1 when the heating element 16 is energized for a predetermined time T3. In step S29, the moisture content A is calculated from the initial temperature t0 and the temperature increase value Δt, and the process proceeds to step S30.
[0079]
In step S30, it is determined whether or not the current operation is a strong operation. If the operation is a strong operation, the process proceeds to step 31. In step S31, in consideration of the fact that the energization amount to the planar heater 31 is larger in the case of the strong operation than in the middle operation, and the moisture content is detected higher than that in the middle operation even at the same moisture content. As shown, the first threshold value X1 that is the boundary between the weak operation and the intermediate operation is set to 45%, which is higher than the standard value (35%) during the intermediate operation, and the second that is the boundary between the intermediate operation and the strong operation. The threshold value X2 is also set to 60%, which is higher than the standard value (50%) during middle operation, and the process proceeds to step S32.
[0080]
If the current driving is not a strong driving in step S30, the process proceeds to step S33, and it is determined whether the current driving is a weak driving. If the current driving is a weak driving, the process proceeds to step S34. In step S34, when the current operation is a weak operation, the amount of energization to the planar heater 31 is smaller than that in the middle operation, and it is detected that the moisture content is detected lower than that in the middle operation even at the same moisture content. As shown in FIG. 13, the first threshold value X1 that is the boundary between the weak operation and the intermediate operation is set to 25% lower than the standard value, and the second threshold value X2 that is the boundary between the intermediate operation and the strong operation is set to It is set to 40% lower than the standard value, and the process proceeds to step S32.
[0081]
In step S32, when the current driving is not weak driving, it is determined that the current driving is middle driving, and the routine proceeds to step 35. In step S35, as shown in FIG. 14, the first threshold value X1 that is the boundary between the weak operation and the intermediate operation is set to 35% of the standard value, and the second threshold that is the boundary between the intermediate operation and the strong operation is set. The threshold value X2 is set to 50% of the standard value, and the process proceeds to step S32.
[0082]
In step S32, when the calculated moisture content A is equal to or less than the first threshold value X1 set in accordance with the current operation mode, the weak operation is set so as to increase the moisture content, and the first threshold is set. When the value is larger than the value X1 and smaller than the second threshold value X2, the medium operation is set so as to maintain the moisture content. When the value is equal to or more than the second threshold value X2, the strong operation is set so as to decrease the moisture content. Then, the process returns to step S21.
[0083]
Thus, by changing the second threshold value X1 for medium operation and weak operation and the second threshold value X2 for strong operation and medium operation according to the current operation mode, the current operation mode is changed. The threshold value is changed even if a moisture content larger than the true moisture content is detected or a small moisture content is detected, unlike the normal operation in which the energization amount (heat generation amount) of the planar heater 31 is standard. It is possible to correct the evaluation of the moisture content A detected by. Thereby, based on the detected moisture content A, it is possible to appropriately set the operation for decreasing the moisture content, the operation for increasing the moisture content, and the operation for maintaining it, and it is possible to reliably operate so as to be within an appropriate moisture content range. it can.
[0084]
Next, a third embodiment of the present invention will be described based on the flowchart of FIG.
[0085]
As in the first and second embodiments, the control unit determines whether or not a predetermined time T1 (here, two hours as in the first and second embodiments) has elapsed after the start of operation (step S41). ) If the time has not elapsed, the process returns to step S41. If the time has elapsed, the process proceeds to step S42, and it is determined whether or not a predetermined time T2 has elapsed after the completion of stirring. If the predetermined time T2 has not elapsed, the process returns to step S42, and if it has elapsed, the process proceeds to step S42 to start processing for detecting the following moisture content.
[0086]
In step S43, the thermistor 18 of the moisture content sensor 15 detects the initial temperature t0 before energization of the heating element 16, and outputs the detected initial temperature t0 to the control unit. In step S44, the heating element 16 of the moisture content sensor 15 is energized, and the process proceeds to step S45.
[0087]
In step S45, it is determined whether or not a predetermined time T3 (here, 20 minutes as in the first and second embodiments) has passed since the heating element 16 is energized. In step S46, the thermistor 18 of the moisture content sensor 15 detects the temperature t1 of the stored item in the processing tank 1, and outputs this temperature t1 to the control unit. And in step S47, electricity supply to the heat generating body 16 is interrupted | blocked.
[0088]
In step S48, a temperature increase value Δt is calculated from the initial temperature t0 and the temperature t1 when the T3 heating element 16 is energized for a predetermined time. In step S49, the water content A is calculated, and the process proceeds to step S50.
[0089]
In step S50, it is determined whether or not the current operation is a strong operation. If the operation is a strong operation, the process proceeds to step S51. In step S51, in consideration of the fact that the energization amount to the planar heater 31 is larger in the case of strong operation than in the middle operation, and that the moisture content is detected to be higher than that in the middle operation even at the same moisture content. A value obtained by subtracting the predetermined value B (10% in this case) from A is set as the corrected moisture content A1, and the process proceeds to step S52.
[0090]
If the current operation is not a strong operation in step S50, the process proceeds to step S53, it is determined whether the current operation is a weak operation, and if it is a weak operation, the process proceeds to step S34. In step S34, when the current operation is a weak operation, the amount of energization to the planar heater 31 is smaller than that in the middle operation, and it is detected that the moisture content is detected lower than that in the middle operation even at the same moisture content. A value obtained by subtracting a predetermined value C (10% here) from the calculated moisture content A is set as the corrected moisture content A1, and the process proceeds to step S52.
[0091]
If it is not weak in step S53, it is determined that the current operation is a middle operation, the calculated moisture content A is set as it is as the corrected moisture content A1, and the process proceeds to step S52.
[0092]
And in step S52, based on the moisture content A1 corrected according to the current operation mode, when the moisture content A1 is smaller than 35%, the weak operation is performed so as to increase the moisture content of the stored items in the treatment tank 1. Set, when the moisture content A1 is larger than 35% and smaller than 50%, the medium operation is set so as to maintain the moisture content of the stored item, and when the moisture content A1 is 50% or more, the moisture content is lowered. Thus, the strong operation is set, and the process returns to step S41.
[0093]
Thus, the calculated moisture content A is corrected according to the current operation mode, and the operation mode is set based on the corrected moisture content A1, so that the sheet heater 31 in the current operation mode is set. Even if the energization amount (heat generation amount) is different from that in the normal middle operation, the correct moisture content can be detected by the corrected moisture content A1. Thereby, according to the corrected moisture content A1, it is possible to appropriately set the operation for decreasing the moisture content, the operation for increasing the moisture content, and the operation for maintaining it, and it is possible to reliably operate so as to be within an appropriate moisture content range. it can.
[0094]
In the third embodiment, correction is performed by subtracting the predetermined value B from the moisture content A during strong operation, and correction is performed by adding the predetermined value C to the moisture content A during weak operation. 16 and the predetermined value C may be changed according to the initial temperature t0 as shown in FIG. 16, and the predetermined value B and the predetermined value C are different values according to the initial temperature t0 as shown in FIG. It is good.
[0095]
Thereby, the moisture content can be finely corrected according to the initial temperature T0, and the moisture content can be corrected more accurately.
[0096]
In the first to third embodiments, the frequency of stirring is changed by changing the cycle of the stirring body according to the operation mode. However, the stirring frequency is changed by changing the stirring time of the stirring body. It may be changed.
[0097]
【The invention's effect】
According to claim 1 of the present invention, even if the energization amount of the heat source differs from the standard value by correcting the evaluation of the moisture content detected by the moisture content sensor according to the energization amount energized to the heat source, The moisture content detected in consideration of the influence can be more accurately evaluated, and the moisture content in the stored items in the treatment tank can be appropriately adjusted based on the detected moisture content.
[0098]
According to the second aspect of the present invention, the energization amount of the heat source is corrected by correcting the evaluation of the moisture content detected by the moisture content sensor based on the table data set according to the energization amount energized by the heat source. Even if it differs from the standard value, the moisture content detected in consideration of this effect can be accurately evaluated, and the moisture content in the storage tank can be adjusted appropriately based on the moisture content corrected based on the table data. It can be possible to do.
[0099]
According to claim 3 of the present invention, even if the energization amount of the heat source is different from the standard value by correcting the threshold value which is a reference for the evaluation of the moisture content according to the energization amount of the heat source, this influence is reduced. The moisture content detected in consideration can be evaluated more accurately, and it is possible to appropriately adjust the moisture content in the stored items in the treatment tank based on the detected moisture content.
[0100]
According to claim 4 of the present invention, even if the energization amount of the heat source is different from the standard value by correcting the detected moisture content according to the energization amount of the heat source, the moisture content detected in consideration of this influence Can be accurately evaluated, and it is possible to appropriately adjust the moisture content in the stored items in the treatment tank based on the corrected moisture content.
[0101]
According to claim 5 of the present invention, the moisture content can be appropriately adjusted by the heat source based on the detected moisture content.
[0102]
According to claim 6 of the present invention, the moisture content can be appropriately adjusted by the exhaust fan based on the detected moisture content.
[0103]
According to the seventh aspect of the present invention, the water content can be appropriately adjusted by the stirring body based on the detected water content.
[0104]
According to claim 8 of the present invention, it is possible to more accurately evaluate the moisture content detected in consideration of the fact that the detected temperature rise value varies depending on the initial temperature.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of an organic matter processing apparatus according to a first embodiment of the present invention.
FIG. 2 is a rear sectional view of the organic matter processing apparatus.
3 is an enlarged cross-sectional view of a main part in FIG.
FIG. 4 is a top view showing a moisture content sensor mounting position and an exhaust / intake structure as viewed from the upper surface side of the organic matter processing apparatus.
FIG. 5 is a longitudinal sectional view showing a drive mechanism as seen from the back side of the organic matter processing apparatus.
FIG. 6 is a longitudinal sectional view showing an exhaust and intake structure of the organic matter processing apparatus.
FIG. 7 is a flowchart of the organic matter processing apparatus.
FIG. 8 is a view showing a moisture content table during strong operation of the organic matter processing apparatus.
FIG. 9 is a view showing a moisture content table during weak operation of the organic matter processing apparatus.
FIG. 10 is a view showing a moisture content table during medium operation of the organic matter treatment apparatus.
FIG. 11 is a flowchart of an organic matter processing apparatus in a second embodiment of the present invention.
FIG. 12 is a view showing a relationship between an operation mode and a threshold value set during a strong operation of the organic matter processing apparatus.
FIG. 13 is a diagram showing a relationship between an operation mode and a threshold value set during a weak operation of the organic matter processing apparatus.
FIG. 14 is a diagram showing a relationship between an operation mode and a threshold value set during a medium operation of the organic matter processing apparatus.
FIG. 15 is a flowchart of an organic matter processing apparatus in a third embodiment of the present invention.
FIG. 16 is a diagram showing another example of the relationship between the predetermined values B and C and the initial temperature of the organic matter processing apparatus.
FIG. 17 is a diagram showing still another example of the relationship between the predetermined values B and C and the initial temperature of the organic matter processing apparatus.
[Explanation of symbols]
1 treatment tank
15 Moisture content sensor
16 Heating element
31 Planar heater (heat source)
34 Exhaust fan
t0 Initial temperature
Δt Temperature rise value

Claims (8)

A treatment tank for decomposing organic matter such as garbage to be charged, a heat source for maintaining the contents stored in the treatment tank in a predetermined temperature range, and the contents when the contents in the treatment tank are heated by a heating element A moisture content sensor that detects the temperature rise value of the stored item in the processing tank and detects the moisture content, and the evaluation of the moisture content detected by the moisture content sensor is corrected according to the energization amount energized to the heat source. An organic matter processing apparatus, comprising: a correcting unit that performs the correction. The said correction | amendment means correct | amends the said moisture content based on the table data set according to the temperature rise value detected with the moisture content sensor and the energization amount to the said heat source. Organic matter processing equipment. The organic substance processing apparatus according to claim 1, wherein the correction unit corrects a threshold value serving as a reference for evaluating the moisture content of the stored item in accordance with an energization amount of the heat source. The organic matter processing apparatus according to claim 1, wherein the correction unit corrects a temperature rise value detected by the moisture content sensor in accordance with an energization amount of the heat source. 5. The organic substance processing apparatus according to claim 1, further comprising a control unit that controls the heat source based on the evaluation corrected by the correction unit. The exhaust fan which exhausts the exhaust gas generated in the said processing tank out of a main body, and the control means which controls the said exhaust fan according to the evaluation correct | amended by the said correction | amendment means were provided. The organic substance processing apparatus according to claim 5. The stirring body provided in the said processing tank, and the control means which controls the stirring frequency of the said stirring body according to the correction value correct | amended by the said correction | amendment means were provided. The organic substance processing apparatus as described in. The moisture content sensor detects an initial temperature before heating the contents in the treatment tank, and the correction means corrects the evaluation of the moisture content according to the initial temperature. The organic substance processing apparatus according to claim 7.

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