JP2661910B2 - Garbage processing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal apparatus for incinerating and reducing garbage with microwaves. 2. Description of the Related Art Generally, kitchen waste disposal devices include those that burn with gas, those that compress and pulverize, and those that ferment, but all of these are used in household kitchens due to problems such as noise, odor, and weight loss. It was unsuitable for use. Therefore, the present inventors have considered a kitchen waste disposal apparatus using microwaves. Hereinafter, this kitchen waste disposal apparatus will be described with reference to FIG. In the figure, reference numeral 101 denotes a main body serving as a microwave resonator, into which a garbage 108 is introduced from an opening 109 into a heat generating container 107 which generates heat by microwaves placed in the main body 101. Then, both the heat generating container 107 and the garbage 108 are heated by the microwave introduced into the main body 101 from the microwave generator 102 through the microwave supply port 104, and the garbage 108 is heated.
Is subjected to incineration and weight reduction using heat generated by its own internal heat and heat from the heat generating container 107. Air required for combustion flows from an air supply blower 105 through an air supply port 106, and exhaust gas generated by combustion enters an exhaust gas purification unit 114 from an exhaust port 110 through a flue 111, and a preheated exhaust gas heating heater. The exhaust gas is heated by the exhaust gas purifier 112, is also purified by the catalyst 113 in the exhaust gas purification unit, and is exhausted by the exhaust blower 115. However, in such a conventional configuration, the temperature of the exhaust gas generated by combustion in the main body 101 and the temperature of the exhaust gas purification unit
Since the exhaust gas temperature is determined by both of the exhaust gas heating heaters 112 in the exhaust gas 114, the temperature of the exhaust gas is uneven, and the purification rate of the catalyst 113 in the exhaust gas purification unit 114 varies depending on the exhaust gas temperature. there were. Further, when the temperature of the exhaust gas exceeds the allowable temperature of the catalyst 113, there is a problem that the catalyst 113 itself is damaged. An object of the present invention is to solve the above-mentioned problems, and to provide a garbage disposal apparatus capable of uniformly purifying the generation of smoke and odor, preventing the emission of unpurified exhaust gas, and preventing the catalyst itself from being damaged. It is assumed that. Means for Solving the Problems In order to achieve the above object, the present invention provides a main body serving as a microwave resonator, a microwave generator for supplying microwaves to the main body, and air supply to the main body. An exhaust fan, an exhaust port for exhausting air in the main body, an exhaust gas purification unit including an exhaust gas heating heater and a catalyst in the middle of a flue provided in communication with the exhaust port, and an exhaust gas temperature control device. And, provided with a temperature detector for detecting the temperature of the exhaust gas, the exhaust gas temperature control device, if the signal from the temperature detector reaches the allowable temperature or more, while increasing the air volume of the blower, the exhaust gas heating heater When the output is turned off and the signal from the temperature detector is equal to or higher than the allowable temperature even under the control, the blower and the microwave generator are stopped. is there. Action With this configuration, garbage is heated by microwaves, ignites after dehydration, self-combustes to ash, and significantly reduces weight and stabilizes harmlessly. The generated smoke and odor are heated by the exhaust gas heating heater, raised to the functional temperature of the catalyst, and oxidized by the catalytic effect to be converted into water or carbon dioxide gas and purified, and the odor generated by the heat generated by catalytic combustion Will be decomposed. At this time, the temperature of the exhaust gas that has passed through the exhaust gas heating heater section varies depending on the action of both the self-combustion of the garbage and the exhaust gas heating heater, and thus varies. At this time, the temperature is detected by the temperature detector, and the temperature is determined by the exhaust gas temperature control device, the output of the exhaust gas heating heater is changed, and the temperature is forcibly adjusted to the catalyst function temperature. In addition, the exhaust gas temperature control device stops the operation if it determines that the exhaust gas temperature becomes too high even if the output of the exhaust gas heating heater is lowered, which may cause damage to the exhaust gas purification unit. Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 1 denotes a main body as a microwave resonator, and a microwave generator 2 for generating microwaves.
have. The microwave is introduced into the main body 1 from the supply port 4 through the waveguide 3. Then, the air supply blower 5 cools the microwave generator 2 and allows air to flow into the main body 1 from the air supply port 6. Further, a heat generating container 7 having a heat resistance of 1000 ° C. or more is provided in the main body 1, generates heat by microwaves, and adds garbage 8 into the heat generating container 7 through an input port 9, and exhaust gas is discharged through an exhaust port 10. The gas enters the flue 11, passes through an exhaust gas purifying unit 14 composed of an exhaust gas heater 12, a catalyst 13, a temperature detector 16, and an exhaust gas temperature control device 17, and is exhausted by an exhaust blower 15. Except for the microwave supply port 4, each opening of the main body 1 is provided with means for preventing radio wave leakage. In the above configuration, garbage 8 is put into the heat generating container 7 through the opening 9 of the main body 1. Then, when electricity is supplied to the microwave generator (magnetron) 2, a microwave is generated and introduced into the main body 1 from the supply port 4 through the waveguide 3. The microwave acts directly on the garbage 8 and instantly heats the garbage 8 which has a high water content and a low thermal conductivity, has a lot of space between the garbage 8 and is hard to be heated externally. At the same time, it acts on the heat-generating container 7, and the heat-generating container 7 generates heat to further heat and dehydrate the garbage 8. When the dehydration is over, the temperature rises above the boiling point, and the substance ignites and burns. The exhaust gas thus generated enters the exhaust gas purification unit 14. Then, the waste gas is heated by the exhaust gas heating heater 12, and the temperature of the exhaust gas at this time varies depending on the temperature due to the self-combustion of the garbage 8 and varies. Therefore, the temperature is detected by the temperature detector 16, the temperature is determined by the exhaust gas temperature control device 17, the output of the exhaust gas heating heater 12 is changed, and the temperature is forcibly adjusted to the optimum functional temperature of the catalyst 13. Next, control of the exhaust gas temperature control device 17 will be described with reference to FIG. That is, when the operation is started, the magnetron 2, the heater 12, and the blowers 5, 15 are turned on in step 18. Then, in step 19, it is determined whether or not the temperature from the temperature detector 16 is equal to or higher than the set temperature. If the temperature is equal to or lower than the set temperature, the output of the heater 12 is increased in step 20. If it is equal to or higher than the set temperature in step 19, it is determined in step 21 whether or not the temperature from the temperature detector 16 is equal to or higher than an allowable temperature that may cause damage to the exhaust gas purification unit 14. If the temperature is equal to or lower than the allowable temperature, the output of the heater 12 is reduced in step 22. Steps
At 23, the air flow of the blowers 5, 15 is increased, and the cooling operation is performed with the output of the heater turned off. In step 24, it is further determined whether the temperature is equal to or higher than the allowable temperature. If the temperature is equal to or lower than the allowable temperature, the heater 12 is turned on again in step 25, and the blowers 5, 15
To the initial condition. If it is determined in step 24 that the temperature is equal to or higher than the allowable temperature, the magnetron 2 and the blowers 5 and 15 are stopped to stop the operation. According to the above embodiment, if the temperature of the catalyst 13 does not fall below the permissible temperature just by lowering the output of the heater 12, the blowing amount of the blowers 5 and 15 is forcibly increased, and
When the temperature is still higher than the allowable temperature, the magnetron 2 and the blowers 5 and 15 are stopped to prevent the catalyst from being damaged. According to the present invention, as is apparent from the description of the above embodiments, when the exhaust gas temperature is equal to or higher than the allowable temperature of the catalyst, the blowing amount of the blower is forcibly increased, and the output of the exhaust gas heating heater is reduced. When the exhaust gas temperature does not drop even with this control, the microwave generator and the blower are stopped to prevent damage to the catalyst.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a kitchen waste processing apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing control of the kitchen waste processing apparatus, and FIG. FIG. DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Microwave generator, 4 ... Supply port, 5 ... Air supply blower, 7 ... Heating container, 9 ... Opening, 10 ... Exhaust port, 12 ... For exhaust gas heating Heater, 13 ...
... catalyst, 14 ... exhaust gas purification unit, 15 ... exhaust blower, 16 ... temperature detector, 17 ... exhaust gas temperature control device.

Claims (1)

(57) [Claims] A main body that is a microwave resonator, a microwave generator that supplies microwaves into the main body, a blower that supplies and exhausts air into the main body, an exhaust port that exhausts air from the main body, In the middle of the flue provided in communication with the mouth, an exhaust gas purification unit composed of an exhaust gas heating heater and a catalyst, an exhaust gas temperature control device, and a temperature detector for detecting exhaust gas temperature are provided. If the signal from the temperature detector reaches or exceeds the allowable temperature,
While increasing the air volume of the blower, turning off the output of the exhaust gas heating heater, if the signal from the temperature detector is also equal to or higher than the allowable temperature by the control, stop the blower and the microwave generator. Kitchen waste disposal equipment.