JPH08173943A - Garbage disposer - Google Patents

Abstract

PURPOSE: To control the moisture content of garbage to be treated so as to be in the optimum state and also control directly its temp. so as to get an appropriate value. CONSTITUTION: A moisture content-detecting sensor 13 is provided to detect the moisture content of the garbage to be treated in a treating tank 3 so as to adjust its moisture content. The structure of the moisture content detecting sensor 13 comprises a heating resistor for forcibly heating the sensor and a temp. sensor for detecting a temp. rise caused by the moisture content of the raw garbage upon the heat generation by the heating resistor. A heater 10 is provided to heat the garbage put in the treating tank 3. When the temp. of the raw garbage is at most a predetermined temp. based on the detection signal from the temp. sensor, the heater 10 is operated to regulate the temp. of the raw garbage so as to be at least a predetermined value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste processing apparatus for decomposing food waste.

[0002]

2. Description of the Related Art Conventionally, microorganisms have been used for decomposition treatment (fermentation) to the extent that they do not affect organic matter and water-containing sludge. Has been. This food waste treatment device is a sawdust-like wood strip as a food waste treatment material in which microorganisms called horror agents live in a treatment tank (for example, Japanese Patent Publication No. 2-10398 and Japanese Patent Publication No. 30760). , JP-B-6-22385). Then, the garbage is put into the treatment tank through the inlet provided in the treatment tank, and the garbage processing material in which microorganisms inhabit and the garbage are mixed and the air is brought into contact to inhabit the garbage processing material. The microorganisms are decomposed and water is evaporated at the same time. Japanese Utility Model Publication No. 5-88683 has been proposed as such a food waste processing apparatus.

Further, in the garbage processing device, a device provided with a stirring means in the processing tank has been proposed by Japanese Patent Application Laid-Open No. 4-4084.

[0004]

However, in the above-mentioned conventional example, when the food waste is decomposed by the microorganisms in the food waste treating material, water is generated, and when the water content of the food waste treating material is too high, There was a problem that the processing efficiency of food waste was reduced. Further, the temperature of the food waste processing material in the processing tank is easily affected by the outside air temperature of the food waste processing device. That is,
When the outside air temperature is low, the temperature in the treatment tank is also low, and when the temperature of the food waste treatment material is low in this way, the microorganisms in the food waste treatment material are less likely to act, which reduces the food waste treatment efficiency. There is a problem. Therefore, conventionally, for example, in Japanese Examined Patent Publication No. 2-10398, the temperature inside the processing tank is controlled by a temperature detecting device provided at the upper part of the processing tank, and the heater attached to the food waste processing apparatus is controlled by the detected temperature. The temperature inside the processing tank is controlled by turning on electricity. However, in such a method, since the temperature of the food waste treatment material is not directly controlled, even if the temperature in the air in the treatment tank can be controlled, the temperature of the food waste treatment material may be low, and A reduction in processing efficiency is inevitable.

The present invention has been made in view of the above problems of the prior art, and its object is to control the water content of the food waste treating material to an appropriate state and directly control the temperature of the food waste treating material. It is an object of the present invention to provide a food waste processing device capable of managing and controlling the temperature of food waste processing material to an appropriate state and effectively preventing a decrease in food waste processing efficiency.

[0006]

In order to solve the above-mentioned problems, the present invention is directed to treating food waste in the treatment tank 3 in a treatment tank 3 containing a food waste treatment material for decomposing food waste. A water content detection sensor 13 for detecting the water content of the material and adjusting the water content of the food waste treatment material is provided, and the water content detection sensor 13 is provided with a heat generating means for forcibly causing the sensor to generate heat. A temperature sensor 13c for detecting a temperature rise due to the water content of the food waste processing material when the food waste processing material is heated by the heat generating means, and a heating means for heating the food waste processing material in the processing tank 3 in the processing tank 3. Control provided to control the temperature of the food waste processing material to be above a certain temperature by operating the heating means when the temperature of the food waste processing material is below a certain temperature based on the detection signal from the temperature sensor 13c. Part 6 It has a feature to.

[0007]

According to the present invention, in the treatment tank 3 containing the food waste treatment material for decomposing the food waste, the water content of the food waste treatment material in the treatment tank 3 is detected to treat the food waste. A water content detection sensor 13 for adjusting the water content of the material is provided, and the water content detection sensor 13 has a heat generating means for forcibly causing the sensor to generate heat, and a food waste treatment material when the heat generation means generates heat. Since the temperature sensor 13c detects the temperature rise due to the water content, the water content detection sensor 13 first heats the heating means to raise the temperature of the sensor. Here, as the moisture content of the food waste treatment material increases, the heat radiation from the sensor increases, so the temperature increase of the sensor decreases as the moisture content increases, and the temperature sensor 13c detects this temperature increase to treat the food waste. It is possible to detect the water content of the wood and adjust the water content of the food waste processing material based on the detected water content. Further, the processing tank 3 is provided with a heating means for heating the food waste processing material in the processing tank 3, and when the temperature of the food waste processing material falls below a certain temperature based on the detection signal from the temperature sensor 13c. Since the control unit 6 is provided to control the temperature of the food waste treating material by operating the heating means so that the temperature of the food waste treating material is above a certain level, the temperature of the food waste treating material is detected by the sensor that detects the water content. By inputting the temperature information of the raw material into the control unit 6, the heating means can heat the raw garbage processing material to raise the temperature of the raw garbage processing material and adjust the temperature of the raw garbage processing material within a certain range. . Therefore, not only the water content of the food waste treatment material can be controlled by the water content detection sensor 13, but the temperature of the food waste treatment material can be controlled, and the temperature can be controlled in an optimum temperature state in which microorganisms in the food waste treatment material are easily activated. is there.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a drawing showing the entire food waste processing apparatus A, in which a case 2 having an upper opening of the food waste processing apparatus A is internally provided with a processing tank 3 having an upper opening. A stirring blade 4 is rotatably provided in the inside of the unit 3. The stirring blade 4 is rotated by the motor 5, and the rotation of the motor 5 is controlled by the controller 6.

An upper end opening of the case 2 is provided with a lid 7 which can be freely opened and closed.
Is provided. An air passage 8 is provided at the opening edge of the upper end of the case 2. One end of the air passage 8 is open to the outside of the case 2, and the other end is opened to the upper end opening of the processing tank 3. . An air supply fan 9 and a warm air heater 10 are installed in the air passage 8, and the air supply fan 9 and the warm air heater 10 are provided in the control unit 6.
It is controlled by the signal from. In the present embodiment, the warm air heater 10 plays a role of heating the air sent from the air supply fan 9 to supply the warm air into the treatment tank 3, and a heating means for heating the food waste treatment material in the treatment tank 3. Also has the role of.

An exhaust passage 11 is provided in the case 2,
The exhaust passage 11 has one end opening to the upper end opening of the processing tank 3 and the other end opening to the outside of the case 2. Exhaust path 1
An exhaust fan 12 is installed inside the exhaust fan 1.
2 is controlled by a signal from the control unit 6. In the treatment tank 3, a food waste treatment material such as wood chips in which microorganisms live is put. As a food waste treatment material for decomposing food waste, conventionally known wood chips (for example, Japanese Patent Publication No. 2-10398 and Japanese Patent Publication No. 2-30).
No. 760, Japanese Utility Model Publication No. 6-22385) can be used.

A water content detection sensor 13 for detecting the water content of the food waste treatment material in the treatment tank 3 to adjust the water content of the food waste treatment material is provided on the side of the treatment tank 3. is there. In the present embodiment, as shown in FIG. 2, the water content detection sensor 13 is a heating means for forcibly generating heat on the back side of the casing 14 formed of a good heat conductive material such as stainless steel, copper, and aluminum. Heating resistor 13
b and a temperature sensor 13c for detecting a temperature rise due to the water content of the food waste treatment material when it is heated by the heating resistor 13b are fixed to each other, and the temperature sensor 13c is molded with a molding material 15 such as an epoxy resin to contain water. Rate detection sensor 1
3, the casing 14 is fixedly attached to the side surface or the lower surface of the processing tank 3 with screws 16.
In addition, B in FIG. 2 indicates a food waste treating material, and 70 indicates a lead wire.

The water content detection sensor 13 energizes the heating resistor 13b, detects the temperature rise degree in consideration of the heat radiation degree according to the water content of the food waste treatment material by the temperature sensor 13c, and based on the detection signal. It is configured to detect both the water content and the temperature of the food waste treatment material. That is, the temperature sensor 13c detects a difference in temperature rise before and after energization of the heating resistor 13b, and the moisture content is detected from the difference in temperature rise of the temperature sensor 13c, thereby activating the microorganisms in the food waste treating material. In an easy environment, when the amount of water in the food waste is high, by intermittently repeating the supply of warm air from the air passage 8 in a short time, it is possible to adjust the water content of the food waste to be reduced. In addition to detecting the water content, the water content detection sensor 13 has a function to constantly control the temperature of the food waste processing material in the processing tank 3 as described below, and when the temperature of the food waste is too low, By detecting this by the temperature sensor 13c and intermittently repeating the supply of warm air from the air passage 8 in a short time, the temperature of the food waste disposal material can be adjusted within a certain range.

As the heating resistor 13b of the water content detecting sensor 13, various ones such as a carbon resistor, a nichrome wire, and a kanthal wire can be used, and as the temperature sensor 13c, a thermistor can be used. And the heating resistor 1
3b is turned on and off by a signal from the control unit 6, and the temperature information detected by the thermistor (temperature sensor 13c) is input to the control unit 6 so that the heating resistor 13b
Is controlled, and thereby, not only the water content of the food waste treating material but also the temperature of the food waste treating material can be adjusted to an optimum state by utilizing the characteristics of the thermistor.

FIG. 3A shows a block circuit diagram of the present embodiment, in which the hot air heater 10 in the air passage 8 is controlled by the control unit 6 realized by a microcomputer or the like. The control unit 6 includes a water content detection sensor 13
When the water content of the food waste processing material becomes more than a certain value based on the detection signal from the temperature sensor 13c, the warm air heater 10 in the air passage 8 is operated to keep the water content of the food waste processing material within a certain range. By operating the warm air heater 10 to achieve the above, the water content of the food waste treatment material can be controlled within a certain range.

Next, the operation will be described. First, a case where the water content detection sensor 13 adjusts the water content will be described. The lid 7 of the food waste processing apparatus A is opened, the food waste is put into the processing tank 3 filled with the food waste processing material, the stirring blade 4 is intermittently operated at regular intervals, and the air supply fan 9 and the exhaust fan are also provided. 12 is operated intermittently at regular intervals to stir and mix the food waste processing material in which the microorganisms inhabit and the food waste, and bring them into contact with air to decompose the food waste by the microorganisms inhabiting the food waste processing material. At this time, the temperature inside the processing tank 3 is detected by the temperature sensor 13c. Next, the water content detection sensor 13 applies a voltage to the heating resistor 13b to raise the temperature of the water content detection sensor 13. On the other hand, in the treatment tank 3, raw garbage is decomposed by microorganisms in the raw garbage treating material to generate water, and the raw garbage treating material absorbs this water, and when the water content becomes high, the raw garbage containing much water The water content detection sensor 13 comes into contact with the waste treatment material, and the heating resistor 13
Since the heat radiation from b increases, the temperature rise of the sensor decreases as the water content increases (see FIG. 4). This temperature rise is detected by the temperature sensor 13c and input to the controller 6. The controller 6 obtains the water content of the food waste treating material from the current temperature of the food waste treating material and the temperature rise of the temperature sensor 13c. Then, when the obtained water content is out of the predetermined range set in advance, the control unit 6
Is included in the food waste treatment material by turning on the warm air heater 10 in the air passage 8 and turning on the air blowing fan 9 to supply hot air from the air passage 8 to heat the treatment tank 3. The water content is evaporated to a desired water content, and when the desired water content is reached, the control unit 6 switches off the warm air heater 10. Therefore, it becomes possible to automatically adjust the water content of the food waste treatment material to a predetermined water content.

Next, a case where the temperature of the food waste treating material is adjusted by the water content detecting sensor 13 will be described. The temperature T (° C) of the food waste treatment material in the treatment tank 3 is the water content detection sensor 1
It is detected by the temperature sensor 13c of No. 3 and input to the control unit 6. When the temperature T (° C.) of the food waste processing material is higher than the temperature T ₀ (for example, 10 ° C.) necessary for efficiently processing the food waste (T> T ₀ ), the control unit 6 keeps the state as it is. However, when the temperature is low (T <T ₀ ), a heater-on signal is transmitted from the control unit 6 to the warm air heater 10 provided in the air passage 8, whereby the warm air heater 10 is turned on, and further air is sent. The fan 9 is turned on, and the inside of the processing tank 3 is continuously heated until T ≧ T ₀ . After that, if T ≧ T ₀ , it is detected by the temperature sensor 13c, and the controller 6 causes the warm air heater 10
The heater-off signal is transmitted to the warm air heater 1
0 turns off. In this way, the temperature of the food waste treatment material is controlled so that T ≧ T ₀ (for example, 10 ° C. or higher) is always maintained.

That is, the water content of the food waste treatment material is 40% to 70%, which is the most effective for treating food waste by microorganisms.
If the water content is too high, air cannot be taken in, aerobic treatment cannot be performed, and it will rot. Further, the temperature condition where the microorganisms are easily activated is about 10 ° C. or higher, and when the temperature is 10 ° C. or lower, it becomes difficult for the microorganisms in the food waste treatment material to act, and the food waste treatment efficiency decreases,
As described above, not only can the water content detection sensor 13 control the water content of the food waste processing material to an appropriate state, but also by directly controlling the temperature of the food waste processing material,
The microorganisms can be placed in an environment where they can be more easily activated, and the temperature can be adjusted to the most effective temperature condition for the decomposition treatment of food waste by microorganisms, so that it is possible to prevent the garbage disposal efficiency from decreasing. There is an advantage that the odor of can be suppressed.

Further, in the above embodiment, the warm air heater 10 in the air passage 8 is also used as the heating means for the food waste treating material, but the present invention is not limited to this, and as another embodiment of the present invention, FIG. As shown in FIG. 5, a sheet heater 20a is separately provided along the outer wall surface of the treatment tank 3 so that the food waste treatment material in the treatment tank 3 can be heated by both the warm air heater 10 and the sheet heater 20a. Good. Other configurations are similar to those of the embodiment shown in FIG.

In this embodiment, when the temperature of the food waste processing material becomes a certain temperature or lower based on the detection signal from the temperature sensor 13c, the control unit 6 will remove the food waste as shown in FIG. 3 (b). The heater unit C of the processing apparatus A (including both the warm air heater 10 of the air passage 8 and the planar heater 20a) is operated at the same time to control the temperature of the food waste processing material to be a certain temperature or higher. By heating the heater C, the temperature of the food waste processing material can be adjusted within an appropriate range. Further, as shown in FIG. 3C, the temperature inside the processing tank 3 may be adjusted by turning on and off the surface heater 20a.

Especially in cold regions or in regions other than cold regions, the temperature of the food waste treatment material may drop too much in winter, and even if the water content of the food waste treatment material is appropriate, the temperature decreases. If you do too much, it becomes difficult for microorganisms to act,
Since the processing efficiency of food waste becomes poor, in order to cope with this, the controller 6 controls the hot air heater 10 to be turned on / off and the surface heater 20a based on the signal of the water content value detected by the water content detection sensor 13. It is preferable to perform appropriate control according to the water content of the food waste treatment material by turning on / off the above, adjusting the air volume of the air supply fan 9 and the exhaust fan 12, and adjusting the stirring frequency of the stirring blade 4.

Further, the water content or temperature of the food waste treatment material is displayed by a display means ((not shown)), or is more constant when the water content is above a certain value or below the certain value. When the temperature is below, the temperature may be displayed by a visual display means or an audible display means, and based on this, the warm air heater 10 and the planar heater 20a may be turned on or water may be sprayed. The warm air heater 10 and the planar heater 20a may be manually turned on / off.

[0022]

As described above, according to the present invention, the water content of the raw garbage treating material in the treatment tank is detected in the treatment tank containing the raw garbage treating material for decomposing the raw garbage. Provided with a water content detection sensor to adjust the water content of the waste treatment material,
This water content detection sensor is composed of a heat generating means for forcibly heating the sensor and a temperature sensor for detecting a temperature rise due to the water content of the food waste processing material when the heat is generated by the heat generating means, The processing tank is provided with a heating means for heating the food waste processing material in the processing tank, and the heating means is operated when the temperature of the food waste processing material falls below a certain temperature based on the detection signal from the temperature sensor. The water content detection sensor adjusts the water content of the raw garbage processing material by detecting the water content of the raw garbage processing material because it is equipped with a control unit that controls the temperature of the raw garbage processing material to be above a certain level. In addition, it is possible to control the temperature of the food waste treatment material by adjusting the temperature of the food waste treatment material within a certain range using a water content detection sensor for detecting the water content. In treated material Microorganisms can be controlled to the optimum moisture content state and temperature state easily activated,
As a result, it is possible to treat food waste more efficiently and further suppress the odor of food waste more effectively.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a food waste processing device used in an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a water content detection sensor of the above.

3A is a block diagram of the above, FIG. 3B is a block diagram of another example, and FIG. 3C is a block diagram of another example.

FIG. 4 is a graph showing the relationship between the temperature increase of the above sensor and the temperature of the food waste treating material.

FIG. 5 is a partially cutaway perspective view of a food waste processing device used in another embodiment of the present invention.

[Explanation of symbols]

 3 Treatment tank 6 Control part 13 Water content detection sensor 13c Temperature sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Etsuko Kajita 1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. The water content of the food waste processing material is adjusted by detecting the water content of the food waste processing material in the processing tank in the processing tank containing the food waste processing material for decomposing the food waste. To provide a moisture content detection sensor for this, the moisture content detection sensor, a heating means for forcibly heating the sensor,
A temperature sensor that detects a temperature rise due to the water content of the food waste processing material when it is heated by the heat generating means, and a heating means for heating the food waste processing material in the processing tank is provided in the processing tank. Based on the detection signal from the temperature sensor, when the temperature of the food waste processing material falls below a certain temperature, it is equipped with a control unit that activates the heating means to control the temperature of the food waste processing material to be above a certain temperature. A garbage processing device characterized by being made.