JP3604826B2 - Garbage processing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a garbage processing apparatus, and more particularly, to a garbage processing apparatus provided with a filter for removing foreign substances contained in exhaust gas discharged from a processing tank for processing garbage (garbage).
[0002]
[Prior art]
As a method for treating a large amount of kitchen waste generated in kitchens such as restaurants, hotels, and inns, there is a method using microorganisms. In this method, garbage is put into a treatment tank containing a carrier (for example, sawdust) suitable for culturing microorganisms, and a stirrer provided in the tank is operated to mix the garbage with the carrier, and to contact the air supply. Then, the kitchen garbage is decomposed into water and carbon dioxide by microorganisms attached to the kitchen garbage.
[0003]
Usually, the treatment tank is provided with a heating means for maintaining a temperature suitable for propagation of microorganisms. In the processing tank, gas (mainly carbon dioxide) and water are generated by the decomposition of organic matter, but the water evaporates into steam, and is discharged from the processing tank to the outside of the device through a gas exhaust path by a blower together with the generated gas. It has become so. Further, the exhaust path is provided with a deodorizer for removing the odor generated due to the decomposition, and the exhaust gas is changed to an odorless gas by a deodorant (such as an oxidation catalyst).
[0004]
[Problems to be solved by the invention]
As described above, when organic matter is decomposed by the activity of microorganisms, gas and water are generated in the treatment tank, but these fluids do not fill up by operating the blower and the exhaust path It is discharged outside through the vessel and does not hinder continuous operation. However, a large amount of foreign matter such as dust contained in the supply air is mixed in the exhaust gas from the processing tank, and the foreign material flows in the exhaust path along with the flow of the exhaust gas. In order to prevent this, a filter for capturing foreign matter is usually provided in the exhaust path.
[0005]
This filter is indispensable for capturing foreign matter in the exhaust gas. However, the captured foreign matter may clog the filter and reduce the amount of air supplied to the processing tank. If the supply of air to this treatment tank decreases, it becomes impossible to secure sufficient supply of air to activate the activity of microorganisms in the treatment tank during continuous operation, and the temperature of the exhaust gas rises significantly in the exhaust path, resulting in oxidation. The heater for heating the catalyst may be overheated.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a filter monitoring device for a garbage disposal device that reliably detects clogging of a filter and prevents a decrease in air supply to a processing tank.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a kitchen waste treatment apparatus according to claim 1 of the present invention is provided with an exhaust path for discharging gas and the like generated in a processing tank for storing and processing kitchen waste to the outside, and disposed in the exhaust path. A filter for removing foreign substances contained in the exhaust gas, a heater disposed on the exhaust path, a deodorizing device disposed on the exhaust path and deodorizing the exhaust gas heated by the heater , An exhaust temperature detecting means disposed to detect a temperature of the exhaust gas heated by the heater; a heater controlling means for controlling an energized state of the heater based on an output of the exhaust temperature detecting means; and An alarm means is provided for monitoring the output heater energizing signal, judging the filter clogging state from the heater energizing time, and issuing an alarm.
[0008]
The garbage disposal device according to claim 2, wherein the warning unit is configured to compare a heater energizing time from the heater control unit with a set time and to issue an alarm when the heater energizing time is shorter than the set time. It is characterized by the following.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3, the kitchen waste treatment apparatus has a first treatment tank 1 and a second treatment tank 2 arranged in parallel. The processing tanks 1 and 2 are covered with front and rear panels 3 and 4 on the front and rear surfaces, two side panels 5 and 6 on the side surfaces, and an upper panel 7 on the upper surface.
[0010]
In the first processing tank 1, a shaft 9 having a stirring blade 8 is provided. The shaft 9 provided with the stirring blades 8 is connected to a motor 11 via a chain 10, and is configured to rotate in the tank by the rotation of the motor 11 to stir the garbage and the like put therein. The same stirring means is provided in the second processing tank 2, but these are not shown.
[0011]
An inlet 12 is formed in the upper part of the first processing tank 1 and the second processing tank 2 through the upper panel 7, and an opening cover 13 that can be opened and closed is provided in accordance with the inlet 12. Further, an exhaust filter 14 is provided so as to extend over the first processing tank 1 and the second processing tank 2 adjacent to the inlet cover 13.
[0012]
On the other hand, an exhaust pipe 15 is provided in an exhaust path for guiding exhaust from the first processing tank 1 and the second processing tank 2 of the present embodiment. A blower 16 for extracting the exhaust gas from the first processing tank 1 and the second processing tank 2, a heater 17 for heating the exhaust gas, and a deodorizer (hereinafter, referred to as a deodorizer) 18 for removing odors from the exhaust gas are sequentially provided in the exhaust pipe 15. Is provided. The exhaust pipe 15 after passing through the heater 17 and the deodorizer 18 is connected to the exhaust pipe 19 through the lower surfaces of the first processing tank 1 and the second processing tank 2.
[0013]
Further, the first processing tank 1 is formed with an outlet 20 for taking out the treated waste from the tank. When the outlet 20 is opened, a shutter 22 that moves upward along the guide member 21 to open the outlet 20 and closes the outlet 20 by moving downward along the guide member 21 when closed. Is provided. Note that these outlets, guide members, and shutters are also separately provided in the second processing tank 2, but are not shown. Further, a chute 23 for guiding the treated waste to the outside of the tank is provided below the outlet 20. The chute 23 is formed from the first processing tank 1 to the second processing tank 2.
[0014]
Further, in the present embodiment, a temperature sensor 24 is provided in a path between the heater 17 and the deodorizer 18 as means for detecting the temperature of exhaust gas (see FIG. 2). The output terminal of the temperature sensor 24 is connected to a heater control circuit described later.
[0015]
On the other hand, in order to monitor the clogged state of the filter 14, a filter monitoring device as shown in FIG. 4 is provided. That is, in FIG. 4, the heater control circuit 31 receives a temperature signal detected by the temperature sensor 24, compares it with a set value, and controls ON / OFF of the energization state of the heater 17 based on the deviation. Further, while the heater 17 is being heated by the heater control circuit 31, that is, the time (ON time) from the start to the end of energization of the heater 17 is measured by the monitoring circuit 32.
[0016]
Further, the monitoring circuit 32 performs a calculation for comparison between the ON time of the heater 17 and a predetermined set time. In this calculation, the ON time is subtracted from the set time.
[0017]
FIG. 5 shows a processing procedure in the monitoring circuit 32. In step 50, the ON time is measured. Further, at step 52, the measured ON time is subtracted from the set time. In step 54, an alarm signal is output when a positive value is obtained according to the calculation result in step 52. This alarm signal is input to the alarm 33. The alarm 33 issues an alarm when an alarm signal is given.
[0018]
When the blower 16 is driven by the rotation of the motor 11 during operation of the kitchen waste treatment apparatus having the above configuration, air outside the tank flows into the first processing tank 1 and the second processing tank 2 as air supply. This air supply provides oxygen to the microorganisms parasitic on the carrier in the tank and activates them. This air supply is extracted as exhaust gas from the first processing tank 1 and the second processing tank 2, flows through the exhaust filter 14 to the exhaust pipe 15, and further passes through the blower 16, the heater 17 and the deodorizer 18 to the exhaust pipe 19. It flows in and out of it. In this way, during operation of the garbage processing apparatus, the exhaust filter 14 through which the exhaust gas passes captures fine solid foreign matter generated during the garbage processing by the microorganisms in the first processing tank 1 and the second processing tank 2.
[0019]
During this time, the exhaust gas passing through the heater 17 is heated to a predetermined temperature (for example, 300 ° C.) for contact combustion with the oxidation catalyst. The heater control circuit 31 calculates a deviation between a temperature signal from the temperature sensor 24 for detecting the exhaust gas temperature and a set value in order to maintain the exhaust gas temperature, and sets an ON / OFF signal so that the deviation falls within a predetermined range. Is output to the heater heating circuit 17. Therefore, during operation, the exhaust gas temperature is kept within a substantially constant temperature range.
[0020]
The monitoring circuit 32 measures the time during which the heater 17 is heated as the ON time. During the heating time of the heater 17, that is, the ON time, when the exhaust filter 14 has almost no contamination (for example, immediately after the filter is washed), the air supply flow is large, and it takes a relatively long time to reach the above-mentioned predetermined temperature. On the other hand, it has been confirmed that when the exhaust filter 14 is clogged, the time required for the supply of air to greatly decrease and reach the same predetermined temperature is shorter than when the exhaust filter 14 is clean.
[0021]
This is due to the fact that the heat capacity of the air decreases in proportion to the decrease in the air supply, so that the air immediately warms up and the temperature rises in a short time. As described above, the clogging of the exhaust filter 14 causes such a result. Become.
[0022]
Therefore, in order to see the transition of the ON time one by one, in the present embodiment, the monitoring circuit 32 performs a subtraction based on the ON time (set time) empirically determined in advance and compares it with the measured ON time. If the value obtained by this subtraction is negative, it is determined that the degree of clogging of the exhaust filter 14 does not significantly affect the air supply amount. An alarm signal is output as having a decisive effect on the volume. This alarm signal is input to the alarm 33, and the alarm 33 issues an alarm indicating that the exhaust filter 14 is clogged.
[0023]
Thus, the clogging of the exhaust filter 14 is quickly known from the alarm, the exhaust filter 14 is removed from the apparatus, and all dirt is removed by, for example, washing, so that the reduced supply amount can be restored to the original supply amount. Becomes possible.
[0024]
As described above, according to the present embodiment, it is possible to secure a sufficient amount of air supply for activating the activity of microorganisms in the first processing tank 1 and the second processing tank 2, and to heat the exhaust gas. A sufficient amount of exhaust gas flows through the heater 17, and it is possible to reliably prevent the heater 17 from being overheated and disconnected.
[0025]
【The invention's effect】
As described above, according to the configuration of the first aspect of the present invention, the heater energizing signal output from the heater control means is monitored, the filter clogging state is determined based on the heater energizing time, and an alarm is issued. Therefore, it is possible to reliably detect the clogged state of the filter and eliminate the clogging of the filter before the amount of supplied air is significantly reduced, and to secure the required amount of supplied air in the processing tank. .
[0026]
According to the configuration of the second aspect, the heater energizing time output from the heater control means is compared with a set time, and an alarm is issued when the heater energizing time is shorter than the set time. It can be easily configured using.
[Brief description of the drawings]
FIG. 1 is a perspective view of a kitchen waste disposal apparatus according to the present invention.
FIG. 2 is a rear view of the kitchen waste disposal apparatus according to the present invention.
Longitudinal cross-sectional view of the garbage treatment apparatus according to the present invention; FIG.
FIG. 4 is a block diagram showing an embodiment of a filter monitoring device according to the present invention.
Figure 5 is a flow diagram showing a processing procedure in the monitoring circuit shown in Figure 4.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st processing tank 2 2nd processing tank 14 Exhaust filter 17 Heater heating circuit 24 Temperature sensor 31 Heater control circuit 32 Monitoring circuit 33 Alarm

Claims (2)

An exhaust path for discharging gas and the like generated in a processing tank for storing and processing kitchen waste to the outside, a filter disposed in the exhaust path to remove foreign substances contained in exhaust gas, and a filter disposed in the exhaust path. A heater, a deodorizing device disposed in the exhaust path for deodorizing exhaust gas heated by the heater, and an exhaust temperature detecting means disposed in the exhaust path and detecting a temperature of the exhaust gas heated by the heater Heater control means for controlling the power supply state of the heater based on the output of the exhaust gas temperature detection means; monitoring a heater power supply signal output from the heater control means; and detecting the filter clogging state from the heater power supply time. A garbage disposal device comprising an alarm means for determining and issuing an alarm. The garbage disposal apparatus according to claim 1 , wherein the alarm unit compares a heater energizing time output from the heater control unit with a set time and issues an alarm when the heater energizing time is shorter than the set time.

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