JP3157998B2 - Garbage processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage processing apparatus for decomposing garbage generated in a kitchen or the like using microorganisms.

[0002]

2. Description of the Related Art Heretofore, garbage has been decomposed (fermented) using microorganisms so as not to affect sludge containing organic matter and water. Devices are known. This garbage processing apparatus includes a wood chip called a biochip in a processing tank (for example, Japanese Patent Publication No. 2-10398, Japanese Patent Publication No. 2-30).
760, Japanese Utility Model Publication No. 6-22385). Then, garbage is introduced into the treatment tank through an input port provided in the treatment tank, the garbage disposal material (biochip) in which microorganisms inhabit, and the garbage are mixed and brought into contact with air, and further shown in FIG. As described above, the surface heater 21a is attached to the treatment tank 3 via the soaking plate 20, and the garbage disposal material is heated by the surface heater 21a to create an environment easily decomposed by microorganisms and to evaporate moisture. I was B in FIG. 4 is a garbage disposal material.

[0003]

When a conventional garbage processing apparatus is used in a cold region, if the outside air temperature of the garbage processing apparatus is low, the heat escaping directly from the surface heater 21a to the outside of the processing tank 3 is reduced. Therefore, there is a problem that the garbage processing material in the processing tank 3 cannot be heated, and the microorganisms in the garbage processing material are hardly activated, thereby lowering the garbage processing efficiency. Therefore, as shown in FIG. 2, for example, a heat insulating material 22 is attached to the outside of the surface heater 21a to make it difficult for heat to escape, and to prevent overheating of the surface heater 21a, a bimetal 23 constituting a contact opening / closing portion of the surface heater 21a.
Has been proposed to be disposed near the surface heater 21a. However, when the outside air temperature rises, the surface heater 21
a tends to overheat, and in this case, the bimetal 23 for overheating prevention is frequently turned ON / OFF,
There is a problem that the contact life of the bimetal 23 cannot be ensured.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to suppress overheating of a heating means in a tank and reduce the frequency of ON / OFF of the bimetal so that the contact of the bimetal can be reduced. It is an object of the present invention to provide a garbage disposal apparatus capable of ensuring a long life.

[0005]

In order to solve the above-mentioned problems, the present invention provides a method for heating the inside of a processing tank 3 into a processing tank 3 containing a garbage processing material for decomposing garbage. The in-tank heating means 21 is provided, the in-tank heating means 32 is insulated from the outside air, and the contact opening / closing part of the in-tank heating means 32 is constituted by the bimetal 23. When the outside air temperature is low, the duty ratio is low.
Duty ratio is small when large and high outside air temperature
It is characterized in that the control means 6 for controlling the energization of the in- tank heating means 21 is provided.

It is preferable to provide an outside air temperature detection sensor 13 for detecting outside air temperature and inputting temperature information to the control means 6.

[0007]

According to the present invention, when the outside air temperature is low, the
Duty ratio when the tee ratio is large and the outside air temperature is high
Is controlled so as to reduce the overheating, so that the overheating of the in-chamber heating means 21 can be effectively prevented, and accordingly, the bimetal 23 for overheating prevention is turned on.
/ OFF frequency can be reduced.
Contact life can be ensured.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a drawing showing the entire garbage processing apparatus 1, and a processing tank 3 having an upper part opened inside a case 2 having an open upper part of the garbage processing apparatus 1. A stirring means 5 having a rotatable stirring blade 11 in 3
0 is inside. The stirring blade 11 is driven to rotate by the motor 5, and the rotation of the motor 5 is controlled by the control unit 6.

A lid 7 is provided at an upper end opening of the case 2, and the lid 7 is openable and closable at a rear end of the upper end of the case 2 around a shaft attachment 2 a. 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 open to the upper end opening of the processing tank 3. . An air supply fan 9 and a heater 10 are provided inside the air passage 8, and the air supply fan 9 and the heater 10 are controlled by a signal from the control unit 6.

An exhaust passage 11 ′ is provided in the case 2, and one end of the exhaust passage 11 ′ is opened to the upper end opening of the processing tank 3, and the other end is opened to the outside of the case 2. . An exhaust fan 12 is provided inside the exhaust path 11 ′, and the exhaust fan 12 is controlled by a signal from the control unit 6. Further , an outside air temperature detection sensor 13 including a thermistor for detecting the outside air temperature of the garbage processing apparatus 1 is attached.

On the outside of the lower portion of the processing tank 3, a surface heater 21a constituting the in-tank heating means 21 and a bimetal 23 for preventing overheating are provided. This surface heater 21a
As shown in FIG. 2, the heat equalizing plate 20 and the surface heater 2
1a, a heat insulating material 22 is attached to the outer wall surface 3a of the processing tank 3 so as to cover the bimetal 23 for preventing overheating from the outside. In the treatment tank 3, a garbage treatment material such as woody swarf in which microorganisms inhabit is placed. As a garbage disposal material for decomposing garbage, conventionally known wood flakes (for example, Japanese Patent Publication No. 2-10398, Japanese Patent Publication No.
No. 30760, Japanese Utility Model Publication No. 6-22385) can be used. This garbage disposal material is indicated by B in FIG.

FIG. 3 shows a drive circuit for the surface heater 21a. When temperature information detected by the outside air temperature sensor 13 is input to the control means 6 realized by a microcomputer or the like, the control means 6 changes the outside air temperature. The surface heater 21a is driven at a duty ratio ( represented by the value of t / T in FIG. 4 ) corresponding to. In FIG. 3, reference numeral 13 denotes a thermistor for detecting the outside air temperature, 21a denotes a surface heater, and 23 denotes a bimetal.

Next, the relationship between the detected temperature of the outside air temperature detecting sensor 13 and the duty ratio at the time of driving the surface heater 21a is shown in Table 1 below.

[0014]

[Table 1]

Then, the lid 7 at the upper end opening of the processing tank 3 is opened and garbage is put into the processing tank 3 filled with the garbage processing material, and the stirring blade 11 is operated intermittently at regular time intervals. The air supply fan 9 and the exhaust fan 12 are operated intermittently at regular time intervals to mix and mix the garbage disposal material with microorganisms and the garbage, and bring the garbage into contact with the air to convert the garbage into the garbage disposal material. Degraded by inhabiting microorganisms.

Here, the temperature of the garbage processing material in the processing tank 3 is easily affected by the outside air temperature of the garbage processing apparatus 1. That is,
When the outside air temperature is low, the temperature in the processing tank 3 also decreases,
When the temperature of the garbage disposal material is lowered as described above, microorganisms in the garbage disposal material are less likely to be active, and thus there is a problem that the garbage disposal efficiency is reduced. Therefore, processing tank 3
The temperature inside the processing tank 3 is controlled by energizing the surface heater 21a attached to the outer wall surface 3a of the garbage processing. First, the outside air temperature detection sensor 13 detects the outside air temperature of the garbage processing apparatus 1. Then, the detected temperature information is input to the control means 6. The control means 6 controls the energization of the surface heater 21a at a duty ratio (see Table 1) corresponding to the outside air temperature. In this manner, by driving the surface heater 21a at a duty ratio corresponding to the outside air temperature, overheating of the surface heater 21a can be effectively prevented, and the frequency of ON / OFF of the bimetal 23 for opening and closing the contact of the surface heater 21a can be reduced. It can be kept as low as possible. Further, by controlling the energization of the surface heater 21a at a duty ratio corresponding to the outside air temperature, even if the structure is such that the surface heater 21a is covered with a heat insulating material 22 for a cold region, or even if the outside air temperature becomes high, The overheating of the surface heater 21a can be effectively prevented, and the bimetal 2
3, the contact life of the bimetal 23 can be secured by reducing the ON / OFF frequency of the surface heater 21.
The reliability of the contact opening / closing a can be maintained for a long period of time. Moreover, by detecting the outside air temperature by the outside air temperature detection sensor 13 and inputting the temperature information to the control means 6, the surface heater 2 at a duty ratio corresponding to the outside air temperature is detected.
It is possible to automate the energization control of 1a.

[0017]

As described above, according to the first aspect of the present invention, the treatment tank containing the garbage disposal material for decomposing garbage is provided with heating means in the tank for heating the inside of the treatment tank. Insulating the heating means in the tank from the outside air and configuring the contact opening / closing part of the heating means in the tank with bimetal, when the outside air temperature is low
When the duty ratio is large and the outside air temperature is high,
Since the control means for controlling the energization of the in-tank heating means is provided so as to reduce the tee ratio , overheating of the in-tank heating means can be effectively prevented, and accordingly, the bimetal for overheating prevention is turned on / off. The frequency can be reduced, the contact life of the bimetal can be secured, and as a result, the reliability of opening and closing the contact of the heating means in the tank can be maintained for a long time.

According to the second aspect of the present invention, an outside air temperature detecting sensor for detecting the outside air temperature and inputting the temperature information to the control means is provided.
The energization control of the heating means in the tank according to the outside air temperature can be automatically performed, which is particularly suitable for use in cold regions.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a garbage processing apparatus used in one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the vicinity of the surface heater according to the first embodiment.

FIG. 3 is a circuit diagram of the same.

FIG. 4 is an explanatory diagram of a duty ratio according to the embodiment.

FIG. 5 is a cross-sectional view around a conventional surface heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Processing tank 6 Control means 13 Outside air temperature detection sensor 21 Inside tank heating means 23 Bimetal

Claims (2)

(57) [Claims] 1. A treatment tank containing a garbage treatment material for decomposing garbage is provided with a heating means in the tank for heating the inside of the treatment tank, and the heating means in the tank is insulated from the outside air and the tank is heated. The contact opening / closing part of the inner heating means is made of bimetal, and when the outside air temperature is low, the duty ratio is large and the outside air temperature
A garbage disposal apparatus characterized by comprising control means for controlling the energization of the heating means in the tank so that the duty ratio decreases when the temperature is high . 2. The garbage disposal apparatus according to claim 1, further comprising an outside air temperature detection sensor for detecting outside air temperature and inputting temperature information to the control means.