KR20100061255A - Daily-living waste disposal apparatus and control method thereof - Google Patents

Abstract

PURPOSE: A trash disposal apparatus is provided to prevent the incomplete drying of domestic waste and to ignite and burn the domestic waste. CONSTITUTION: A control method of a domestic wastes processing unit is as follows. The temperature of an exhaust air of a disposal tub is detected with a temperature sensor(21). A change of detection temperature is monitored. When a temperature gradient is slowly increased, before it suddenly increased, a magnetron(24) is suspended. The exhaust air of a disposal tub is heated by a heater(23), and the heat is circulated to in and out of the disposal tub, and then a part of the exhaust air of a disposal tub is deodorized, and is exhausted to the apparatus outside.

Description

Household garbage disposal apparatus and control method {DAILY-LIVING WASTE DISPOSAL APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to a household waste treatment apparatus for heating and drying household waste with microwaves and a control method thereof.

As the household waste processing apparatus which heat-drys household waste by microwaves, there is what is known by patent document 1 like the one shown in FIG.

This household waste processing apparatus can open and close the opening of the upper surface of the box-shaped microwave shielding chamber 2 provided in the housing 1 by the electromagnetic shield upper cover 3 provided in the housing 1 for rotation freely. The microwave shielding chamber 2 surrounds surfaces other than the upper surface with the metal plate 4, such as stainless steel which reflects a microwave. Household waste is stored in a user-type processing container 5 that transmits microwaves. The processing container 5 is freely attached to and detached from the microwave shielding chamber 2 and rotates to stir the housed garbage. The bottom part of the processing container 5 is equipped with the rotary cutter which rotates from the exterior of the processing container 5 in order to shield the household waste.

In the microwave shielding chamber 2, the microwaves in the magnetron provided in the housing 1 are irradiated from outside the side wall of the microwave shielding chamber 2.

In addition, the air drawn from the outside of the apparatus by the intake fan provided in the housing 1 and supplied by the cooling of the magnetron is guided to the metal blowing guide 6 provided on the inner surface (bottom surface) of the upper shield 3 of the electromagnetic shield, thereby processing the container. (5) It is blown into. In addition, an exhaust port 7 is provided in an upper portion of the sidewall of the microwave shielding chamber 2, and the exhaust fan provided in the lower portion of the housing 1 sucks the inside of the processing container 5, thereby forcibly evacuating the outside of the housing 1. It is supposed to be.

In Patent Literature 2, in the household garbage processing apparatus having the structure as described above, the temperature of the exhaust gas from the processing container is detected by a temperature sensor, the detected temperature is monitored, and the detected temperature rapidly rises in a linear gentle rising trend. When it turns out, the technique of automatically terminating the drying process by a magnetron is disclosed.

In addition, Patent Literature 3 arranges a catalyst in an exhaust path formed outside the processing chamber (microwave shielding chamber), discharges the exhaust from the processing vessel to the outside of the apparatus while deodorizing the catalyst as a catalyst, and uses a magnetron for drying household waste as a heat source of the catalyst. The combined technology is disclosed.

[Patent Document 1] Japanese Patent No. 393958

[Patent Document 2] Japanese Patent Application Laid-Open No. 2004-66053

[Patent Document 3] Japanese Patent No. 404007

However, in the conventional household waste disposal apparatus as described above, the drying of household waste becomes excessive and the situation of combustion and ignition cannot be avoided. Moreover, since it is difficult for a process container to raise heat resistance temperature with a microwave permeable material, a process container may be lost.

In addition, as described in Patent Literature 2, when the detection temperature becomes a rapid rise in a linear gentle rise, only by automatically terminating the drying process by the magnetron, the drying is forced to a state in which it is still insufficient. In some cases, it has to be stopped and the drying treatment has to be performed again.

An object of the present invention is to prevent excessive drying of household waste, causing combustion and ignition, or conversely stopping the drying in an insufficient state. It is also an object of the present invention to be able to efficiently deodorize the exhaust gas from the processing container while maintaining high thermal efficiency.

The first aspect of the present invention provides a household waste treatment apparatus in which a treatment container housing household waste is provided in a microwave shielded room where microwaves can be irradiated with a magnetron, and dried by cutting and stirring the household waste. It relates to a control method, the temperature of the exhaust from the processing vessel is detected by a temperature sensor to monitor the change in the detected temperature, and the magnetron is stopped before the temperature gradient reaches the point of change that changes from a gentle rise to a sudden rise. After that, the exhaust from the processing container is heated by a heater to circulate the inside and outside of the processing container as warm air, and is discharged to the outside of the apparatus while deodorizing a part of the exhaust from the processing container.

According to a second aspect of the present invention, the change point is set in advance according to the amount of heat of the magnetron, the amount of air in the processing container, and the capacity of the processing container.

Similarly, 3rd invention heats exhaust from the said processing container with a heater in the circulation path formed outside the said microwave shield room, and circulates into a processing container as warm air by a circulation fan.

Similarly, 4th invention detects the temperature of the said warm air with a temperature sensor, and controls the said heater so that the temperature may be set to a set temperature, circulating a warm air only for a predetermined time.

Similarly, in the fifth aspect of the invention, the outside air of the apparatus is inhaled by an intake fan, heated by the heater, and circulated as hot air simultaneously with the exhaust from the processing container.

Similarly, in the sixth invention, a part of the exhaust gas entering the microwave shielding chamber is catalyzed outside the microwave shielding chamber while circulating the exhaust gas from the processing vessel from the circulation path back into the processing chamber via the microwave shielding chamber with the circulation fan. Deodorizer is discharged to the outside of the appliance with an exhaust fan.

According to a seventh aspect of the present invention, there is provided a microwave shielding chamber in which a microwave is irradiated from a magnetron in a housing, and in this microwave shielding chamber, a processing container for accommodating household waste is provided, and the household waste is heated and dried while cutting and stirring household waste. A treatment apparatus is provided, and between the microwave shielding chamber and the housing, a circulation path for circulating exhaust from the processing container back to the processing container is discharged to the outside of the housing while deodorizing the exhaust from the processing container. Provide an exhaust deodorizing unit, a temperature sensor for detecting the exhaust temperature in the processing container, and a heater for heating the exhaust from the processing container and circulating the exhaust air from the processing container to the processing container by the circulation fan, Also, by monitoring the change in the detected temperature of the temperature sensor, And a control circuit for controlling the netron and the heater, wherein the control circuit stops the magnetron before reaching a change point in which the temperature gradient of the detected temperature changes from a gentle rise to a sharp rise and then circulates the warm air. Activate

According to the eighth aspect of the invention, the change point is set in advance in the control circuit according to the amount of heat of the magnetron, the amount of air in the processing container, and the capacity of the processing container.

Similarly, in the ninth invention, the heater is installed in a circulation path formed outside the microwave shielding chamber, and the exhaust from the processing container is heated by the heater in the circulation path, and the circulation fan is circulated into the processing container as warm air.

Similarly, in the tenth invention, the control circuit controls the heater so that only the set time is circulated while the warm air maintains the set temperature.

Similarly, according to the eleventh invention, an intake fan for intake of outside air outside the housing is provided, and the intake air is heated by the heater, and circulated as hot air by the circulation fan at the same time as the exhaust from the processing container.

Similarly, in a twelfth invention, the circulation fan circulates exhaust from the processing vessel from the circulation passage into the processing vessel via the microwave shielding chamber, and the exhaust deodorizing portion deodorizes part of the exhaust with a catalyst. Discharge out of the housing with an exhaust fan.

Similarly, in a thirteenth invention, an intake fan for intake of outside air outside the housing is provided, the intake air is also heated by the heater, and the air is circulated to the circulation fan at the same time as the exhaust air from the treatment vessel and supplied into the treatment vessel. And the circulation fan circulates exhaust from the processing vessel from the circulation passage into the processing vessel via the microwave shielding chamber, and the exhaust deodorizing portion deodorizes a part of the exhaust with a catalyst, and the outside of the housing with the exhaust fan. And the air flow rate of the circulation fan is larger than that of the intake fan, and the air flow rate of the exhaust fan is larger than the air flow rate of the circulation fan.

In the first and seventh inventions, a temperature sensor detects the temperature of exhaust gas (including water vapor and gas generated from household waste in addition to air) to monitor the change in the detected temperature. The magnetron is stopped before the gradient reaches the point of change from a gentle rise to a sharp rise.

In the induction heating method using microwaves, as shown in FIG. 2, the microwaves are absorbed as moisture, the water is heated, and gradually evaporates as water vapor. Therefore, while the moisture of household garbage is high, , The temperature rise is a gentle gradient (until H1 when the temperature reaches T1). However, when moisture is lowered, the generation of water vapor is less, and the air is warmed up so that the temperature gradient is steep, and the specific heat of the air is about 1 / 500th of water. It is transmitted to the grade gradient at the time point H2. At this point in time, H2 is referred to as a change point, and if drying by microwave irradiation is continued as it is, the rapid gradient of temperature rise continues even after the change point reaches combustion and ignition.

Thus, in the present invention, the drying treatment by microwave irradiation is stopped before the rising gradient of the detected temperature (exhaust temperature in the processing vessel) by the temperature sensor reaches the point of change, after which the exhaust gas from the processing vessel is shielded by microwaves. It is possible to prevent combustion and ignition in which drying caused by microwave irradiation becomes excessive by transitioning to a warm air heating treatment in which a heater installed outside the chamber is heated and circulated in and out of the processing container as warm air by a circulation fan.

The temperature of the change point at which the temperature rise changes to the steep gradient can be given as a predicted value in the statistical mean value obtained by the experiment. The point of change also changes depending on the type and throughput of household waste, but the degree of change is small, and it is cumbersome for the user to change the setting of the change point in advance when the type or throughput of household waste changes.

Thus, in the second and eighth inventions, the point of change is set in advance according to the calorific value of the magnetron, the amount of exhaust from the processing container, and the capacity of the processing container. For example, in the statistical mean obtained from the experiment, the rank of the magnetron, the amount of air in the processing vessel, and the capacity of the processing vessel are divided into ranks, and the temperature of the point of change is determined for each rank, and the temperature of the point of change is determined. The temperature which is several degrees (for example, 1-6 degreeC) low is preset as the stop temperature of a magnetron.

That is, by monitoring the change of the detection temperature of the temperature sensor which detects the exhaust temperature in a processing container, since the temperature gradient shows the transition from a gentle rise to a sudden rise as shown in FIG. When the temperature just before reaching the set point of change is reached, the magnetron is automatically stopped, and after that, the magnetron is dried by a warm air circulation by heating the heater.

Therefore, it can dry by appropriate temperature control according to the heat amount of a magnetron, the air amount in a processing container, and the capacity of a processing container.

In the third and ninth inventions, the exhaust from the processing container is heated by a heater in a circulation path formed outside the microwave shielding chamber, and the circulation fan is circulated into the processing container as warm air, so that the exhaust from the processing container is collected in the circulation path. It can be heated thermally and efficiently.

In the fourth invention and the tenth invention, with reference to Fig. 2, only the set time from H3 to H4 is detected while detecting the temperature of the warm air heated by the heater and maintaining the warm air temperature at the set temperature T3. Since it circulates, the warm air heating process which takes over after the drying process by microwave irradiation can be performed stably.

In the fifth invention and the eleventh invention, the outside air of the device is inhaled by an intake fan, and the intake air is also heated by a warm air heater and supplied as warm air into the processing container, thereby increasing the amount of warm air and increasing the warm air heat treatment effect. .

In the sixth invention and the twelfth invention, since the exhaust from the processing container is circulated back to the processing container via the microwave shielding chamber, the thermal efficiency can be improved. In addition, since the exhaust from the processing container is not deodorized abruptly, but through the inside of the microwave shielding chamber, it is deodorized to the outside of the microwave shielding chamber and forcedly discharged to the outside of the apparatus.

In the thirteenth invention, since the air flow rate of the circulation fan is larger than that of the intake fan, and the air flow rate of the exhaust fan is larger than the air flow rate of the circulation fan, suitable conditions are taken into consideration in consideration of water vapor, gas, etc. generated in the household waste for intake, circulation, and exhaust. Can be performed efficiently.

Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

Example 1

3 shows a configuration diagram of Embodiment 1. FIG.

The household waste processing apparatus A of Example 1 uses the user-cylindrical processing container 11 which can transmit microwaves, and rotates it in the box-shaped microwave shielding chamber 13 provided in the housing 12. As shown in FIG. Detachment is freely mounted on the base 14 and rotated together with the rotary base 14. The processing container 11 is provided with a handle (not shown) on the outer surface of the body portion. The processing container 11 is integrally formed by mixing ceramics such as tar in order to have heat resistance in microwave-transmitting materials such as polypropylene.

When the rotary cutter 15 is mounted on the bottom part of the processing container 11, and the processing container 11 is mounted on the rotary receiving base 14, the rotary cutter 15 is a microwave shielding chamber ( It is connected to the cutter motor 16 provided in the lower part of the outer side 13 via the clutch 17 like the conventional one, and is made to rotate with the cutter motor 16. As shown in FIG. The rotary support 14 is rotated by the stirring motor 18 provided in the outer lower part of the microwave shield room 13.

The microwave shielding room 13 surrounds surfaces other than the front surface with the metal plate, such as stainless steel which reflects a microwave, and the front opening can be opened and closed with the electromagnetic shielding door which is not shown in the housing 12, This electromagnetic shielding The front door is opened, and the processing container 11 can be taken in and out from the front opening of the microwave shielding chamber 13.

Between the housing 12 and the microwave shielding chamber 13, an upper purifying passage 19a horizontal to the outside of the microwave shielding chamber 13, a side circulation passage 19b perpendicular to the outer one side, and perpendicular to the outer other side An exhaust deodorization path 19c is formed, and the upper circulation path 19a and the side circulation path 19b communicate with each other.

An intake fan 20 is provided inside the intake port 12a formed in the housing 12, and outside air sucked in by the intake fan 20 is introduced from one end of the upper circulation path 19a. The temperature sensor 21 and the humidity sensor 22 are provided in the other end in the upper circulation path 19a, and the electrothermal heater 23 is provided in the middle of the upper circulation path 19a.

In the side circulation path 19b, the magnetron 24 is provided in the middle, and the circulation fan 25 is provided below this. The microwaves in the magnetron 24 are irradiated into the processing container 11 through the circumferential wall of the processing container 11 in the middle of the side wall of the microwave shielding chamber 13. The circulation fan 25 circulates air, water vapor, or gas that has entered the microwave shielding chamber 13 in the processing vessel 11 again through the side circulation passage 19b.

In the exhaust deodorization passage 19c, an exhaust fan 26 is disposed below the exhaust deodorization path 19c, and a deodorization catalyst 27 is installed above the deodorization path 19. Further, the exhaust deodorization path 19c is located outside the housing 12 above the deodorization catalyst 27. An opening external exhaust port 28 is formed. The exhaust deodorizing part 29 is comprised by these. The exhaust fan 26 forcibly discharges air, water vapor, or gas that has entered the microwave shielding chamber 13 from the external exhaust port 28 to the outside of the housing 12 through the catalyst 27. The deodorizing catalyst 27 is heated (200 degreeC) with the catalyst heating heater which is not shown in figure.

The processing container 11 mounted on the rotation support stand 14 can close the upper opening with the upper lid 30. The upper cover 30 is provided with an inlet port 31 and an exhaust port 32, and the inlet port 31 communicates with the upper circulation path 19a via an intake side communication chamber 33 formed at an upper portion thereof. In the upper part of the exhaust port 32, the exhaust side communication chamber 35 is formed by the partition wall 34 of the porous structure or mesh structure for microwave shielding, and the exhaust port 32 is this exhaust side communication chamber 35 It communicates with the inside of the microwave shielding chamber 13 through the through. The partition wall 34 which forms the exhaust side communication chamber 35 and the partition wall 36 占 which forms the intake side communication chamber 33 are provided in the ceiling of the microwave shielding chamber 13.

The household waste disposal apparatus A of such a structure mounts the processing container 11 which accommodated household waste on the rotary support base 14, and operates as follows.

When the power source is turned ON, the processing vessel 11 on the rotary support 14 is rotated by the stirring motor 18, and the rotary cutter 15 in the processing vessel 11 is driven by a cutter motor ( While rotating to 16, microwaves in the magnetron 24 are irradiated into the processing vessel 11 through the circumferential wall of the processing vessel 11. In addition, outside air is taken in by the intake fan 20 and enters the processing vessel 11 through the intake port 31 of the upper lid 30, and the exhaust of the processing vessel 11 (water vapor evaporated from household waste other than air or generated gas). ) Enters into the microwave shielding chamber 13 through the exhaust side communication chamber 35 from the exhaust port 32 of the upper lid 30, and then the side circulation passage 19b and the upper circulation passage 19a by the circulation fan 25. Circulates back into the processing vessel (11). At the same time, a part of the exhaust from the processing vessel 11 that enters the microwave shielding chamber 13 is discharged to the outside of the housing 12 from the external exhaust port 28 while being deodorized into the catalyst 27 by the exhaust fan 26. do.

In the processing vessel 11 circulating through the side circulation passage 19b and the upper circulation passage 19a, the temperature is detected by the temperature sensor 21 and the humidity is detected by the humidity sensor 22. Control circuits in which the magnetron 24, the heater 23, the intake fan 20, the circulation fan 25, the exhaust fan 26, and the heater for catalytic heating include a CPU (central computing device) according to the temperature and the detected humidity. (Not shown).

As shown in FIG. 2, the detected temperature by the temperature sensor 21 rises with the passage of time as the heating and drying of the household waste by microwaves progresses, and the temperature rises as long as the moisture of the household waste is high. Although it is a gentle gradient (up to H1 when the temperature reaches T1), when moisture decreases, the generation of water vapor decreases, the air warms by that temperature, and the temperature gradient becomes steep, and the specific heat of air is about 1/500 of water. If it falls to the point where it exists, it will change to a rapid gradient at the time of temperature rise (H2).

In this invention, this time point H2 is taken as a change point, and the temperature which reaches this change point is the heat quantity of the magnetron 24, the air amount in the process container 11, and the temperature of the process container 11 by the statistical mean by experiment. Determination is made according to the capacitance, and this is set in advance in the control circuit. Then, the rising gradient of the detected temperature by the temperature sensor 21 is monitored by the control circuit, and the magnetron 24 is stopped before the temperature (between 1 degree and the specific rising temperature) at which the detected temperature reaches the temperature of the change point. After that, while detecting the temperature of the warm air passing through the upper circulation path 19a and the side circulation path 19b with the temperature sensor 21, the heater 23 is suppressed so that the warm air temperature maintains the set temperature T3, and this is H3. Only operate the set time from to H4.

For example, if the temperature of the change point determined according to the amount of heat of the magnetron 24 and the amount of air in the processing container 11 and the capacity of the processing container 11 is any temperature between 60 ° C and 90 ° C which is 100 ° C or less. When the temperature detected by the temperature sensor 21 reaches a temperature lower than that of 1 ° C. to 6 ° C., the magnetron 24 is stopped, and after that, the warm air temperature continuously detected by the temperature sensor 21 is 100. The heater 23 is suppressed so as to maintain any predetermined temperature between ° C and 120 ° C, and only this is operated for a set time.

Therefore, after the magnetron 24 stops, the warm air heated by the heater 23 is sent by the circulation fan 25 from the intake port 31 of the upper lid 30 into the processing container 11 and burned. · The household garbage which has not reached the ignition temperature is dried by warm air. The exhaust from the processing container 11 once enters the microwave shielding chamber 13 through the exhaust-side communication chamber 35 at the exhaust port 32 of the upper lid 30, and then the side portion is circulated by the circulation fan 25. It is heated again by the heater 23 through the circulation path 19b and the upper circulation path 19a, and circulates back into the processing container 11 again. Part of the exhaust from the processing vessel 11 that enters the microwave shielding chamber 13 is discharged from the external exhaust port 28 to the outside of the housing 12 while being deodorized into the catalyst 27 by the exhaust fan 26. .

If the air flow rate of the intake fan 20 is 5 liters per hour, for example, the air flow rate of the circulation fan 25 is determined by the exhaust gas from the processing container 11 for the gas generated from water vapor or household waste evaporated from household waste other than air. Since it is included, the air volume of the intake fan 20 needs to be two times (10 liters) or more, and the air volume of the exhaust fan 26 is about three times (15 liters) of the intake fan 20.

[Example 2]

4 shows a configuration diagram of Embodiment 2. FIG.

In the household waste processing apparatus B of Example 2, the upper surface of the microwave shielding chamber 13 is opened and opened and closed by the electromagnetic shielding upper door 38, and the processing container 11 is opened in the upper surface of the microwave shielding chamber 13. Cash in and out from. In addition, between the microwave shielding chamber 13 and the housing 12, a start circulation path 39 and a return circulation path 40 are formed in parallel, and an exhaust path 41 communicating with the return circulation path 40 is provided. Forming.

The intake chamber 46 and the start circulation chamber 47 are formed in the electromagnetic shielding upper door 38 by the upper lid 30 and the partition walls 42 to 45 which close the upper opening of the processing container 11. have. An intake fan 20 is provided inside the intake port 12a formed in the housing 12, and outside air taken in by the intake fan 20 is introduced into the processing container 11 through the intake chamber 46.

The processing vessel 11 mounted on the rotary support 14 in the microwave shielding chamber 13 is rotated by the stirring motor 18, and the rotating cutter 15 in the processing vessel 11 is a cutter motor ( 16 and the microwaves in the magnetron 24 are irradiated into the processing vessel 11 through the circumferential wall of the processing vessel 11 in the same manner as in the first embodiment.

A circulation fan 25 is provided in the starting circulation path 39, and an electrothermal heater 23 is provided in the return circulation path 40, and exhaust from the processing vessel 11 is a circulation fan 25. It enters into the return circulation path 29 through the start circulation chamber 47 by the action of, and is heated by the heater 23 through the return circulation path 40, and from the return circulation chamber 48 to the processing container 11 again. Circulate At that time, when the heater 23 is operating in the same manner as in the first embodiment, it is warmed and circulated.

The temperature sensor 21 which detects the temperature of the exhaust from the processing container 11 is provided between the start circulation chamber 47 and the return circulation path 39, and the detected temperature of this temperature sensor 21 is a control circuit. Is monitored by the magnetron 24, the heater 23 and the like are controlled as in the embodiment.

In the exhaust path 41, an exhaust fan 26 and a deodorizing catalyst 27 are provided to form an exhaust deodorizing unit 29. A part of the exhaust gas from the processing container 11 is returned to the return circulation path 40. Is discharged to the outside of the apparatus from the external exhaust port 28 opening to the outside of the housing 12 through the exhaust passage 41.

In addition, in all the cases of the first and second embodiments, the exhaust deodorizing portion 29 is provided in the housing 12, but the outer structure is independent of the housing 12, that is, the outer side of the housing 12. It is good also as a structure to connect.

1 is a configuration diagram of an example of the example.

2 is a graph showing a control example according to the present invention in a relationship between processing time and temperature.

3 is a configuration diagram of an embodiment of the present invention.

4 is a configuration diagram of the second embodiment.

※ Explanation of code ※

A… Household waste treatment apparatus of Example 1

11... Processing vessel 12... housing

12a... Intake port 13.. Microwave shielded room

14... Turntable 15.. Rotary cutter

16... Cutter motor 17.. clutch

18... Stirring Motor

19a... Upper circuit 19b... Side circulation

19c... Exhaust deodorization furnace

20 ... Intake fan 21... temperature Senser

22 ... Temperature sensor 23.. heater

24... Magnetron 25... Circulation fan

26... Exhaust fan 27.. Deodorizing Catalyst

28... External exhaust port 29... Exhaust deodorizer

30... Upper cover 31.. Intake vent

32... Exhaust port 33.. Intake side communication room

34... Partition wall 35. Exhaust side communication room

36, 37.. Partition wall

B… Household garbage processing apparatus of Example 2

38... Electronic shielding upper door

39... 40 starting circulation route Return circuit

41... 42-45 exhaust furnace; Partition wall

46... Intake chamber

47... Departure circulation room 48. Return circulation room

Claims (13)

A treatment container containing living waste in a microwave shielded room where microwaves are irradiated by a magnetron, and the living waste treating apparatus which heat-drys the living waste in the processing container while cutting and stirring, wherein the treatment container The temperature sensor detects the temperature of the exhaust gas at the temperature and monitors the change in the detected temperature, stops the magnetron before the temperature gradient reaches the point of change from a gentle rise to a sharp rise, and then exhausts from the processing vessel. Is heated by a heater to circulate into and out of the processing container as warm air, and is discharged to the outside of the apparatus while deodorizing a part of the exhaust gas from the processing container. The method of claim 1, The change point is set in advance in accordance with the amount of heat of the magnetron, the amount of air in the processing container and the capacity of the processing container. The method of claim 1, The exhaust gas from the processing container is heated by a heater in a circulation path formed outside the microwave shielding chamber, and circulated into the processing container as warm air by a circulation fan. The method of claim 1, And detecting the temperature of the warm air with a temperature sensor, and circulating the warm air only for a predetermined time while controlling the heater to maintain the temperature at the set temperature. The method of claim 1, The outside air outside the apparatus is inhaled by an intake fan, heated by the heater, and circulated as warm air simultaneously with the exhaust from the processing container. The method of claim 3, wherein The exhaust from the processing vessel is circulated from the circulation passage into the processing vessel via the microwave shielding chamber by the circulation fan, and a portion of the exhaust gas entering the microwave shielding chamber is deodorized with a catalyst from outside the microwave shielding chamber, and the exhaust fan is exhausted. Control method of household waste treatment apparatus, characterized in that the discharge to the outside of the apparatus. In a household waste treatment apparatus, a microwave shielding chamber irradiated with microwaves from a magnetron is formed in a housing, and a processing container for receiving household waste is provided in the microwave shielding chamber, and the household waste is heat-dried while cutting and stirring the household waste in the processing container. An exhaust gas is formed between the microwave shielding chamber and the housing to form a circulation path for circulating the exhaust gas from the processing container back to the processing container by a circulation fan, and to exhaust the exhaust gas from the processing container while desorbing the exhaust gas from the processing container. A temperature sensor for providing a deodorizing unit and detecting the temperature of the exhaust gas from the processing container in the circulation path, a heater for heating the exhaust gas from the processing container and circulating the processing container as hot air by the circulation fan, and the temperature By monitoring the change in the detected temperature of the sensor A control circuit for controlling the magnetron and the heater, wherein the control circuit stops the magnetron before reaching a change point in which the temperature gradient of the detected temperature changes from a gradual rise to a sudden rise, and then rotates the heater to circulate the warm air. Household garbage processing device, characterized in that the operation. The method of claim 7, wherein And said change point is previously set in said control circuit in accordance with the amount of heat of the magnetron, the amount of air in said processing container, and the capacity of said processing container. The method of claim 7, wherein The heater is installed in a circulation path formed outside the microwave shielding chamber, and the exhaust gas from the processing container is heated by the heater in the circulation path, and circulated into the processing container as warm air by a circulation fan. Control method. The method of claim 7, wherein And the control circuit controls the heater to circulate only the set time while the warm air maintains the set temperature. The method of claim 7, wherein And an intake fan for intake of outside air outside the housing, the intake air being heated by the heater, and circulated as hot air to the circulation fan at the same time as the exhaust from the treatment container, to be supplied into the treatment container. The method of claim 7, wherein The circulation fan circulates the exhaust gas from the processing container from the circulation path into the processing container via the microwave shielding chamber, and the exhaust deodorizing part deodorizes a part of the exhaust gas with a catalyst and moves to the outside of the housing with the exhaust fan. Household waste treatment apparatus, characterized in that the discharge. The method of claim 7, wherein An intake fan for intake of outside air outside the housing is provided, and the intake air is also heated by the heater, and at the same time as the exhaust from the processing container, the circulation fan is circulated as hot air and supplied into the processing container. Exhausting the exhaust gas from the processing container from the circulation path into the processing container via the microwave shielding chamber, and the exhaust deodorizing part deodorizes a part of the exhaust gas with a catalyst and discharges the exhaust fan from the exhaust fan to the outside of the housing. And the air flow rate of the exhaust fan is greater than that of the intake fan, and the air flow rate of the exhaust fan is greater than that of the circulation fan.

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