JP2000189925A - Automatic operation controller for garbage disposal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller capable of surely setting the time required for completion of garbage drying/solidification operation of the disposal system. SOLUTION: This disposal system is provided with: a heating vessel 2 for heating and drying garbage; a blower 3 for sucking and circulating an atmospheric gas within the heating vessel 2; a circulation passage 4 having the blower 3; a condenser 5 that is placed in a position upstream from the blower 3 of the circulation passage 4 and used for cooling the atmospheric gas to condense vapor in the atmospheric gas; and a gas-liquid separation vessel 6 that is placed in a position between the condenser 5 and the blower 3, of the circulation passage 4 and used for subjecting the uncondensed gas and condensed liquid, formed in the condenser 5, to gravity separation. In the disposal system, a temperature sensor 36 is fitted to the circulation passage 4 on the way from the heating vessel 2 to the condenser 5; and also, an operation control means 40 for detecting temperature of the circulation atmospheric gas from the start point of operation of the heating vessel 2 with the sensor 36, concurrently calculating the integrated operating time from the start point of the operation, counting the evaporation/drying time A from the start point of the operation to the point at which the detected temperature with the sensor 36 steeply drops from an about 100 deg.C constant temperature, determining the time required for drying, (A+B), accordingly to the evaporation/drying time A and stopping the operation of the heating vessel 2, is placed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal apparatus for drying and solidifying garbage without generating odors around the garbage, and more particularly to a garbage disposal apparatus to be supplied to a heating tank. The present invention relates to an automatic operation control device of a garbage disposal device capable of determining a processing end time without causing the garbage to deodorize.

[0002]

2. Description of the Related Art A garbage disposer for drying and processing garbage (vegetable waste, garbage, etc.) having a large amount of water from a kitchen in a restaurant or a home is a garbage disposal apparatus that heats garbage without heating. Because the odor leaks, a gas circulation path is connected to the heating tank that heats the garbage, the atmosphere gas in the heating tank is sucked, the vapor in the atmosphere gas is cooled by a condenser, condensed, and a gas-liquid separator is used. To separate gas and liquid, and circulate the gas to the heating tank again to dry the garbage while deodorizing, so that the garbage is finally dried to a smooth state or a smooth but slightly oily state It has become.

[0003]

When the garbage is automatically controlled by this garbage processing apparatus to finally dry the garbage to a smooth state or a smooth but somewhat oily state, the temperature control in the heating tank is not performed. Control such as ON / OFF is performed based on the detection value of the temperature sensor. However, since the amount of garbage put into the heating tank changes every time it is put in, the end time of drying differs for each processing. The end time cannot be set with.

[0004] Therefore, a temperature sensor is provided in the circulation path from the heating tank to the condenser, and the end time is detected by the temperature of the steam passing through the circulation path.

The temperature of the steam generated from the garbage is approximately 100 ° C. during drying, and then the temperature decreases as the moisture in the garbage disappears. Therefore, when the temperature drops to 70 ° C., the drying process is terminated. .

However, even if the temperature is set to 70 ° C., the steam temperature in the circulation path is affected by the ambient temperature, particularly, the temperature difference between summer and winter, so that even if the temperature is set to 70 ° C.
There is a problem that drying is not sufficient, and it becomes dry, sticky, or excessively dried. Even if the temperature is not affected, there is a difference in the drying time even in the garbage of garbage, so that there are many problems in determining the drying end time only by the set temperature of the steam temperature.

Accordingly, the present invention has been devised to solve the above-mentioned problem, and an object of the present invention is to provide an automatic operation control device for a garbage disposal apparatus capable of reliably setting a garbage drying / solidification end time. To provide.

[0008]

In order to solve the above-mentioned problems,
The invention according to claim 1 is provided with a heating tank for heating and drying garbage, a circulation path having a blower for sucking and circulating atmospheric gas in the heating tank, and a circulation path provided upstream of the blower in the circulation path. A garbage disposal comprising: a condenser for cooling the atmospheric gas to condense vapor in the atmospheric gas; and a gas-liquid separation tank provided between the condenser and the blower and gravity-separating the gas and the condensed liquid. In the apparatus, a temperature sensor provided in a circulation path leading to the condenser, a temperature of the temperature sensor is detected from the start of operation of the heating tank, and an operation time is integrated. Count the evaporative drying time from the constant temperature of ℃ until it suddenly drops, and according to the evaporative drying time,
An automatic operation control device for a garbage disposal device, comprising: an operation control means for determining a drying end time and stopping the operation of the heating tank.

According to a second aspect of the present invention, the operation control means determines that the counted evaporative drying time is A, the solidification time from the evaporative drying time A to the end of the operation is B, and the solidification time B is B = k1A + k2 (time) (where k1 = 0.1 to 0.3, k2 = 0 to 2.0) and the end time is determined. is there.

According to a third aspect of the present invention, the operation control means controls the inner wall temperature in the heating tank to 120 to 130 ° C., preferably 125 to 130 ° C.
3. The automatic operation control device for a garbage disposal device according to claim 1, wherein the temperature is controlled to a degree.

According to the above configuration, the temperature of the steam generated from the garbage reaching the condenser is detected, the time when the temperature drops rapidly is detected, and the evaporative drying time from the start of operation to the time is detected. Thus, the end time can be determined without being affected by the amount of garbage input or the ambient temperature.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 1, the overall configuration of the garbage drying apparatus according to the present invention will be described.

As shown in the drawing, the garbage drying treatment apparatus 1 comprises a heating tank 2 for heating and drying the garbage R, and a suction tank for circulating and circulating an atmosphere gas G inside the heating tub 2 to reheat the garbage. And a circulation path 4 having a blower 3 for returning into the inside 2.
A condenser 5 for cooling the atmosphere gas G and condensing the vapor of the atmosphere gas G is connected to the upstream side of the blower 3 in the circulation path 4, and a condenser 5 is provided between the condenser 5 and the blower 3.
A gas-liquid separation tank 6 for separating gas and condensate from each other by gravity is provided.

The heating tank 2 is provided so that a heating coil 8 covers a container 7 formed in a bottomed cylindrical shape.
Inside the container 7, a stirring member 9 for crushing and stirring the charged garbage R is provided. A lid 11 is provided at the upper opening of the container 7, and after the garbage R is charged, the lid 11 is closed to keep the inside of the heating tank 2 in a sealed state.

The stirring member 9 includes a rotating shaft 12 erected along the axis of the heating vessel 2 and a plurality of rotating members 12 (here, radially attached to the rotating shaft 12 at equal intervals in the circumferential and axial directions). And three blades 14. The stirring member 9 is provided with a motor 15 for rotating the stirring member 9, and is connected to the rotating shaft 12 via a speed reducer 16.

An opening 17 serving as an outlet for the atmospheric gas G inside the heating tank 2 is formed in the upper part of the heating tank 2, and a suction pipe 25 forming a part of the circulation path 4 is connected to the opening 17. Have been.

The condenser 5 in the circulation path 4 is formed by providing plate-shaped radiation fins 19 on a meandering pipe 18, and a cooling fan 21 for air-cooling the atmosphere gas G in the condenser 5. Is provided.

The gas-liquid separation tank 6 is formed in a closed box shape. A gas inlet 22 through which the atmospheric gas G cooled by the condenser 5 flows is formed in the upper part of the side surface, and the gas inlet 22 is formed in the upper part. A gas outlet 23 for discharging G is formed, and a liquid outlet 2 for discharging condensate W downward is formed at the bottom.
4 are formed.

The blower 3 is provided above the gas outlet 23 downstream of the gas-liquid separation tank 6. Downstream of the blower 3 is provided an inflow pipe 26 which constitutes a part of the circulation path 4, and the inflow pipe 26 is connected to an opening 27 formed at the upper part of the heating tank 2 and serving as a gas inlet. Have been.

At the bottom of the gas-liquid separation tank 6, liquid is discharged while maintaining the internal pressure in the circulation path 4 within a set range, and outside air is introduced when the pressure in the circulation path 4 becomes negative. A substantially U-shaped pressure compensation drain pipe 31 is connected. One end of the pressure compensation drain pipe 31 is connected to the liquid discharge port 2 of the gas-liquid separation tank 6.
4 and the other end is opened to the outside, and a U-shaped curved portion 32 is formed therebetween. The liquid from the gas-liquid separation tank 31 is stored in the curved portion 32 and the water pressure H in the circulation passage 26 Pressure is compensated.

A band-shaped ribbon heater 33 is wound around the pressure compensating drain tube 31 so as to heat the liquid so that the liquid inside does not freeze in the cold season.

In the garbage disposal in this garbage disposal apparatus, the garbage is drained, put into the heating tank 2 and heated by the heating coil 8.
And at the same time, the atmosphere gas G in the heating tank 2 by the blower 3
Is dried while circulating in a circulation path. The steam generated from the garbage is cooled and condensed by the condenser 5 together with the atmosphere gas G, the liquid component is removed in the gas-liquid separation tank 6, and the gas component is returned to the heating tank 2 through the inflow pipe 26.

In the heating tank 2, the water is gradually evaporated while being stirred and crushed by the stirring member 9 to be dried and solidified. Solid matter remaining as a result of drying is taken out from an outlet 34 formed in the heating tank 2 and buried in the soil to be recycled as a raw material for fertilizer, or incinerated together with general waste. .

In the present invention, a temperature sensor 35 for detecting the wall surface temperature of the container 7 of the heating tank 2 is provided, and the suction pipe 25 forming the circulation path 4 between the heating tank 2 and the condenser 5 is provided with: A temperature sensor 36 for detecting the temperature (steam temperature) of the atmosphere gas from the heating tank 2 is provided, and the detection values of these temperature sensors 35 and 36 are input to the operation control means 40.

The operation control means 40 activates the blower 3, the motor 15, and the cooling fan 21 at the start of operation, and simultaneously supplies electricity to the heating coil 8, and during the operation, the heating coil 8 according to the detection value of the temperature sensor 35. Is controlled to ON / OFF to maintain the temperature in the heating tank 2 at an appropriate temperature of 120 to 130 ° C., preferably 125 ° C., and the temperature sensor 36 of the suction pipe 25 while integrating the time from the start of the operation of the heating tank 2. Check the history of changes in steam temperature from the start, count the evaporative drying time from the start of operation until the temperature detected by the temperature sensor 36 (steam temperature) drops sharply from a constant temperature of about 100 ° C. The drying end time is determined according to the time, and the operation of the heating tank 2 is stopped.

The automatic operation of the operation control means 40 will be described with reference to FIG.

FIG. 2 shows the temperature when the ordinary garbage R (about 50 kg, water content about 80%) coming out of a cafeteria or restaurant is dried (the temperature in the container is kept at 120 ° C.) in the garbage disposal apparatus 1. This shows a change with time of the steam temperature detected by the sensor 36.

First, the steam temperature is set to 100 ° C. for about 40 minutes.
Then, it is in a stew state (or soup state) at about 100 ° C. for about 2 hours. In this state, steam is generated at a substantially constant rate. Moisture associated with the garbage (eg, in dietary fiber) will gradually evaporate. When the moisture disappears, the steam temperature drops sharply from 100 ° C., and if it becomes 80 ° C. or less, the temperature changes gradually to 70 ° C.

Therefore, from the start of the operation to the time T when the steam temperature suddenly drops from 100 ° C. (for example, when the temperature reaches 90 ° C.) is referred to as the evaporative drying time A. When B is set, the processing time is expressed as follows: processing time = A + B.

FIG. 3 shows the data when the solidification time B is arbitrarily selected with respect to the time until the horizontal axis falls below 90 ° C. (evaporation drying time A), and the drying treatment is performed. It shows that the product was dry and solidified in a smooth and dry state, or in a slightly oily state, and the mark ■ indicates that the solidification was insufficient and it was sticky or muddy and the drying and solidification was insufficient. Is shown.

As is clear from the data in FIG. 3, in the case of □ which shows good drying and solidification, there is a correlation between the evaporative drying time A and the solidification time B. It can be seen that even if the time B is short, and the evaporation drying time A is different, the optimum solidification time B has a certain relationship with the evaporation drying time A.

FIG. 4 shows the relationship between the amount of garbage charged into the heating tank 2 and the optimum processing time (A + B).
When variously changed to garbage of 20 to 60 kg and dried and solidified, it was recognized that there was a proportional relationship between the processing amount and the processing time.

Therefore, when the evaporation and drying A to B are obtained from the straight line L in FIG. 3, the slope k1 of the straight line L is 0.25 and the intercept k2
Is 1.8 (Hr), and therefore, the equation of the straight line L can be expressed by B = 0.25A + 1.8 (Hr).

The formula obtained in FIG. 4 is a general and standard garbage discharged from a dining room or a restaurant, and is a single processed product (eg, only vegetables, only fish, only okara, only lawn grass). Then, the values of the various slopes k1 and the intercepts k2 are different.

Therefore, the above equation is set to B = k1A + k2 (time), and the operation control means 40 can change the coefficient according to the dust type so that the coefficients k1 and k2 can be changed according to the dust type.

In this case, k1 is set to 0.1 according to the kind of garbage.
By changing k2 in the range of 0 to 2.0 and k2 in the range of 0 to 2.0, it is possible to set the optimal processing time (A + B) for drying and solidification according to the type of all garbage. It becomes possible.

As described above, in the present invention, 100
The operation control means 40 obtains a time (for example, 90 ° C.) at which the steam temperature suddenly drops from the temperature from the temperature detected by the temperature sensor 36 to the intake pipe 25 and counts the time from the start of the operation to the time to evaporate the drying time A The remaining solidification time B is calculated from the obtained evaporative drying time A, and when A + B (time) has elapsed from the start of the processing, the energization of the heating coil 8 in the heating tank 2 is stopped to perform the processing. Terminate.

By determining the processing time from the evaporative drying time A in this manner, the automatic operation can be performed in a state where the drying and solidification are always good.

[0040]

In summary, according to the present invention, the temperature of the steam generated from the garbage reaching the condenser is detected, the time when the temperature drops rapidly is detected, and the evaporative drying from the start of operation to the time is detected. By detecting the time, an excellent effect that the end time can be determined without being influenced by the amount of raw garbage or the ambient temperature is exhibited.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a garbage drying processing apparatus according to the present invention.

FIG. 2 is a diagram showing a change over time of a steam temperature reaching a condenser in the present invention.

FIG. 3 is a diagram showing a relationship between an evaporation drying time A and a solidification time B in the present invention.

FIG. 4 is a diagram illustrating a relationship between a raw garbage processing amount and a processing time in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Garbage drying apparatus 2 Heating tank 3 Blower 4 Circulation path 5 Condenser 6 Gas-liquid separation tank 8 Heating coil 35 Temperature sensor 36 Temperature sensor 40 Operation control means

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F26B 21/00 F26B 23/06 A 23/06 B09B 3/00 ZABZ F-term (Reference) 3L113 AA04 AB05 AC08 AC21 AC45 AC46 AC58 AC67 BA01 CA08 CA20 CB05 DA30 4D004 AA03 AC01 CA12 CA15 CA22 CA42 CA48 CB04 CB27 CB31 CB32 CB44 DA01 DA02 DA03 DA06 DA20

Claims (3)

[Claims] 1. A heating tank for heating and drying garbage,
A circulation path having a blower that sucks and circulates the atmosphere gas in the heating tank, and a condenser that is provided upstream of the blower in the circulation path and cools the atmosphere gas to condense vapor in the atmosphere gas; In a garbage disposal apparatus provided with a gas-liquid separation tank provided between the condenser and the blower for gravity-separating a gas and a condensed liquid, a temperature sensor provided in a circulation path leading to the condenser, From the start of operation, the temperature of the temperature sensor is detected and the operation time is integrated.
Operation control means for counting the evaporative drying time from a constant temperature of about 100 ° C. until the temperature suddenly drops, determining the drying end time according to the evaporative drying time, and stopping the operation of the heating tank. An automatic operation control device for a garbage disposal device. 2. The operation control means, when the counted evaporative drying time is A, and when the solidifying time from the evaporating drying time A to the end of the operation is B, the solidifying time B
B = k1A + k2 (time) (where k1 = 0.1 to 0.3, k2 = 0 to 2.0) and the end time is determined. 3. The automatic operation control apparatus for a garbage disposal apparatus according to claim 1, wherein the operation control means controls the temperature of the inner wall in the heating tank to 120 to 130 ° C., preferably 125 ° C.