KR100260505B1 - A fermentation/dry apparatus of waste foods - Google Patents

Abstract

PURPOSE: Provided is an apparatus for fermenting and dehydrating food wastes by controlling temperature and moisture content in the fermenting tank, which can remove offensive odor generating materials included in the discharge gas from the apparatus and process the food wastes easily. CONSTITUTION: The apparatus comprises a controller controlling the whole process, a ferment tank, a ceramic heater, a first temperature detecting sensor detecting the temperature inside the ferment tank heated by the ceramic heater, a heat carrier heating device placed in a heater insertion part in a heat carrier chamber for heating the heat carrier underlain in the chamber, a second temperature sensor detecting the temperature of heat transfer oil heated by the heating device, a temperature setting device fixing the heating temperature of the ceramic heater and the heat carrier heating device, a moisture setting device fixing moisture to dry the food waste in the tank and outputting to the controller, a stirring device, a stirring motor operating the stirrer, a timer setting the operation time of the motor, a stirring motor operation part, an air supply fan applying heat to air flown in from the outside and discharging to the ferment tank to be proper for growing microorganism in the tank and the motor, a ceramic filter radiating far infrared rays, an air exhaust fan the motor, a first and a second moisture detecting sensors, and an alarming device giving an alarm if the mean detected moisture of the food wastes is less than the preset moisture value by the moisture setting device.

Description

Fermentation / drying device for food waste

The present invention relates to a food waste fermentation / drying apparatus that can maintain the temperature inside the fermentation tank at a constant temperature and deodorize the food waste and at the same time deodorize the odor.

Generally, the food waste fermentation / drying apparatus includes patent applications 96-27994, patent applications 96-77637, 97-13433, and 97-13434, filed by the applicant.

In the above-mentioned prior invention, the food waste treatment apparatus of Patent Application No. 97-13433 is a fermentation tank 200 into which food waste is input, and a rotary shaft 310 inside the fermentation tank 200, as shown in FIG. A stirrer 300 installed to stir the food waste, an auxiliary heater 545 radiating far infrared rays into the fermentation tank 200, and a ceramic heater 400 that generates heat to supply high temperature air into the fermentation tank 200; ), And an intake unit 500 for heating and supplying oxygen under conditions suitable for the growth of microorganisms inside the fermentation tank 200, and burning and discharging odors and harmful gases generated during fermentation in the fermentation tank 200. The exhaust unit 600 has a basic configuration, but the intake unit 500 includes an air inlet 510 for introducing air from the lower inside of the processing apparatus, and a blower 520 in which an inlet is connected to one side of the air inlet 510. ) And this blower (5 Air outlet 530, the outlet of the 20 is connected to one side, the direct and indirect heating chamber 540, 550 installed on the heater mounting portion 410, the air heating tube 560 and the air chamber ( 570, the preheated air circulates through the air chamber 570 formed around the fermentation tank 200, thereby heating the fermentation tank 200 to a predetermined temperature and simultaneously supplying the preheated air into the fermentation tank 200. It was configured to properly maintain the temperature in the fermenter 200 without affecting.

In the above description, the housing (outer case) of the heater mounting portion 410 is made of stainless steel sheet to effectively reflect the far infrared rays generated from the ceramic heater 400.

In addition, both ends of the rotary shaft 310 of the stirrer 300 are provided with wings 350 so as to effectively scrape the food debris attached to both side walls of the fermentation tank 200, and upwards through the exhaust port 610. A water filter 640 is provided around the exhaust pipe 630 to absorb dust, odor and moisture remaining in the exhaust gas.

However, in the present invention of the present applicant configured as described above, there are some problems as follows.

First, the preheated air is configured to maintain the fermentation tank 200 at a constant temperature while circulating the air chamber 570, the fermentation tank 200 in a state in which the preheated air is deprived of heat while passing through the air chamber 570 Since it is supplied inside, cold air and food waste eventually come into contact with each other, making it difficult to adequately dry the food waste and react with microorganisms, and also cause cold air to come in direct contact with food waste, resulting in a bad smell. There is a problem in that only the circulation of air cannot maintain the circumference of the fermentation tank 200, in particular, the lower part of the fermentation tank 200 at a constant temperature.

Second, the present invention of the present applicant is an exhaust suppression plate around the exhaust port 610 to remove the odor in the exhaust gas containing a large amount of water generated by drying and fermentation of food waste in the fermentation tank ( 615 is attached to circulate the hot air generated in the ceramic heater 400 and the air chamber 570 to prevent the hot air is directly discharged through the exhaust port 610 without being stirred with the food waste and at the same time stirring the food waste And by preventing the emission of the odor generated during fermentation so that the exhaust gas is decomposed by the far infrared rays emitted from the auxiliary heater 545 in the fermentation tank 200, but only the far infrared rays emitted from the auxiliary heater 545 in the exhaust gas Problems such as not being able to completely deodorize odors, not being able to discharge exhaust gas smoothly, and delaying the processing time of food waste There was a point.

Third, the conventional food waste fermentation / drying apparatus configured as described above cannot accurately detect the humidity of the food waste being fermented / dried, so that the food waste cannot be burned in the fermentation tank or the fermentation / drying can not be precisely controlled. In addition, the fermentation / drying can not be precisely controlled, there was a problem that can not reduce the power consumption.

The present invention has been made in view of the various problems described above, and an object of the present invention is to provide a fermentation / drying apparatus for food waste which can easily ferment / dry food waste without contaminating the air.

It is another object of the present invention to provide a fermentation / drying apparatus for food wastes capable of completely decomposing odor contained in exhaust gases generated during fermentation / drying of food wastes.

Still another object of the present invention is to provide a fermentation / drying apparatus for food waste which can precisely control the fermentation / drying of food waste by accurately detecting the humidity of the food waste being fermented / dried.

Still another object of the present invention is to provide a fermentation / drying apparatus for food waste which can reduce power consumption by precisely controlling fermentation / drying of food waste.

In order to achieve the above object, a food waste fermentation / drying apparatus according to an embodiment of the present invention includes a controller for controlling the overall operation, a fermentation tank into which food waste is input, and a food waste introduced into the fermentation tank to ferment and dry. The heating medium for heating the heating medium stored in the heating medium chamber is mounted on the heater inserting part in the heating medium chamber, the first temperature detection sensor for detecting the temperature of the ceramic heater to generate heat, the temperature in the fermentation tank heated by the heating of the ceramic heater. A heater, a second temperature detection sensor for detecting a temperature of the heat medium oil heated by the heat medium heating heater, a temperature setting means for setting an exothermic temperature of the ceramic heater and the heat medium heating heater, and drying of food waste put into the fermentation tank Humidity setting means for setting the humidity and outputting it to the controller; A stirrer for stirring the used food waste, a stirring motor for driving the stirrer to stir the food waste put into the fermentation tank for a predetermined time, a timer for setting a driving time of the stirring motor, and a signal set by the timer A stirring motor driving unit for receiving a control signal output from the controller at the same time and outputs a signal for driving the stirring motor to agitate the food waste put into the fermentation tank by the stirrer for a predetermined time, and the microorganisms in the fermentation tank; An air inlet through the air inlet unit so as to be suitable for propagation, an air blower that is heated by heat generated by the ceramic heater in a heating chamber and discharged into the fermentation tank, an air blower that drives the air blower, and a ceramic that emits far infrared rays Filter and put into the fermenter The odor and harmful gases contained in the exhaust gas generated by drying / fermentation of food waste are heated and oxidized by the heat generated from the ceramic heater and deodorized, decomposed and oxidized by the far infrared rays emitted from the ceramic filter. A non-contact state with an exhaust blower discharged to the outside through the exhaust unit, an exhaust motor for driving the exhaust blower, and a food waste disposed in the fermenter at a predetermined distance from each other near the bottom of the fermenter, and introduced into the fermenter as the stirrer rotates. And first and second humidity detection sensors that detect humidity of the food waste in contact with the food waste, and the first and second humidity detection sensors detect the arithmetic average of the food waste a plurality of times for a predetermined time. If the humidity average value is less than the humidity value set by the humidity setting means, Is characterized by having an alarm means.

1 is a schematic structural diagram of a food waste fermentation / drying apparatus according to an embodiment of the present invention;

Figure 2 is a control block diagram of food waste fermentation / drying apparatus according to an embodiment of the present invention,

Figure 3 is a longitudinal sectional view schematically showing a conventional food waste fermentation / drying apparatus.

<Description of the symbols for the main parts of the drawings>

23a: first humidity detection sensor 23b; second humidity detection sensor

28: first temperature detection sensor 29: second temperature detection sensor

30: Agitator 31: Timer

32: stirring motor drive part 33: stirring motor

35: humidity setting means 38: temperature setting means

39: alarm means 40: ceramic heater

52: air supply blower 59: air supply motor

78: exhaust fan 79: exhaust motor

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic structural diagram of a food waste fermentation / drying apparatus according to an embodiment of the present invention, Figure 2 is a control block diagram of a food waste fermentation / drying apparatus according to an embodiment of the present invention.

1 and 2, reference numeral 10 denotes a food waste treatment apparatus of the present invention, the food waste apparatus 10 is a controller 29 for controlling the overall operation, and the fermentation tank into which the food waste ( 20), a ceramic heater 40 which generates heat to ferment / dry the food waste put into the fermentation tank 20, and an agent for detecting the temperature in the fermentation tank 20 that is heated by the heat generation of the ceramic heater 40. 1 The temperature detection sensor 28 and the heater insertion portion 74 in the heat medium chamber 70 are mounted to the heat medium stored in the heat medium chamber 70 at about 70 to 300 ° C. (about 5 to 70 ° C. at the time of extinction). The second temperature detection which detects the temperature of the heat medium heating heater 80 which heats to the inside and the outside, and maintains the temperature in the fermentation tank 20 to about 60-90 degreeC, and the heat medium oil heated by the said heat medium heating heater 80. Sensor 29, the ceramic heater 40 and the heating medium And a temperature setting means for setting a heating temperature of 38 of 80.

In addition, the food waste treatment apparatus 10 according to an embodiment of the present invention sets the humidity to dry the food waste introduced into the fermentation tank 20, and the humidity setting means 35 to output to the controller 29, and Stirrer 30 for stirring the food waste put into the fermentation tank 20, Stirring motor 33 for driving the stirrer 30 to stir the food waste put into the fermentation tank 20 for a predetermined time, and the stirring The food waste put into the fermenter 20 receives a timer 31 for setting a driving time of the motor 33 and a control signal output from the controller 29 while receiving a signal set by the timer 31. The stirring motor driving unit 32 for outputting a signal for driving the stirring motor 33 to stir for a predetermined time by the stirrer 30, and the fermentation / drying in the fermentation tank (20) If the The air blower blows outside air through the air introduction unit 51 so as to be suitable for the growth of microorganisms, and is heated by heat generated by the ceramic heater 40 in the heating chambers 54 and 55 and discharged into the fermentation tank 20. (52), the air supply motor (59) for driving the air supply blower (52), and the odor and harmful gas contained in the exhaust gas generated by the drying / fermentation of food waste introduced into the fermentation tank (20) An exhaust blower 78 which is heated and oxidized by the heating of the ceramic heater 40 and then deodorized, decomposed, and oxidized by far-infrared rays emitted from the ceramic filter 90 described later and discharged to the outside through the exhaust unit 60. And the exhaust motor 79 for driving the exhaust blower 78 and the bottom of the fermentation tank 20 are disposed at a predetermined distance from each other in the fermentation tank 20 in accordance with the rotation of the stirrer 30. Ingested Food Waste By the first and second humidity detection sensors 23a and 23b for detecting the humidity of the food waste in a non-contact state and in contact with the food waste, and the first and second humidity detection sensors 23a and 23b, respectively. An alarm means 39 is provided which alerts that the humidity average value of the food waste detected a plurality of times for a predetermined time, for example, 15 minutes or less, is equal to or less than the humidity value set by the humidity setting means 35.

In the above description, the humidity setting means 35 may use various setting switches, but it is most preferable to use a dip switch.

The heat medium chamber 70 in which the heat medium heating heater 80 is disposed is composed of an outer chamber 24 provided with a predetermined width from the outer wall 21 of the fermentation tank 20, and the outer chamber 24 The outer circumferential surface is covered with a heat insulating material 22 to maintain the temperature of the heat medium stored in the heat medium chamber 70.

In the upper portion of the heat medium chamber 70, a circulation heat passage 72 is formed so that the liquid heat medium heated by the heat generated from the heat medium heating heater 80 flows backward to the rear of the heat medium chamber 70 by convection. Is formed.

A plurality of ceramic tubes 92 are formed in the exhaust part 60 to deodorize odor generating substances contained in the exhaust gas generated by fermentation and drying of food waste in the fermentation tank 20 by far infrared rays. The ceramic filter 90 is provided.

In addition, it is preferable that the ceramic filter 90 provided in the exhaust unit 60 preferably vertically and densely arranges the tubular ceramic tube 92 whose upper and lower ends are opened over the entire region of the exhaust pipe 63. The ceramic tube 92 is inserted into the exhaust pipe 63 in a state perpendicular to the mesh body 94 made of a porous plate.

Between the fermentation tank 20 and the heating chamber (54, 55) is introduced into the air discharge portion 53 through the air introduction portion 51 in accordance with the operation of the air supply blower 52 driven by the air supply motor (59) Air is supplied to the upper portion of the fermentation tank 20 after the air is heated by the heat of the ceramic heater 40 in the heating chambers 54 and 55 and the air heating tube 56, respectively. Is formed.

In FIG. 1, reference numeral 24 denotes an inlet for injecting food waste into the fermentation tank 20, 25 is a cover covering the inlet 24, and 26 represents food waste that is fermented / dried in the fermentation tank 20. It is a discharge port discharged to the outside by the reverse rotation drive of the stirring motor 33.

Hereinafter, the operation and effect in the fermentation / drying apparatus of the food waste according to an embodiment of the present invention configured as described above will be described.

First, the lid 25 covering the inlet 24 of the waste fermentation / drying apparatus 10 is opened, and food waste is introduced into the fermentation tank 20, and then the stirring motor 33 is driven by the timer 31. After setting the time and setting the humidity for fermentation / drying the food waste by the humidity setting means 35, the main switch (not shown) is switched on to turn on the ceramic heater 40 and the heating medium heating heater ( 80) Apply power to generate heat.

At this time, while the air supply motor 59 is driven to rotate the air supply blower 52, the external air is sucked into the air discharge unit 53 through the air introduction unit 51 to the heating chamber 55 and the air heating tube 56. The natural convection of the heat medium heated by heat radiated from the heat medium heating heater 80 at the same time as it is discharged and heated by the heat generated from the ceramic heater 400 and discharged into the fermentation tank 20 through the air supply ports 57 and 58. By heating the outer peripheral surface of the fermentation tank 20 to ferment / dry the food waste by the heated air introduced into the fermentation tank 20 and the heating of the fermentation tank 20.

The exhaust gas generated by the fermentation / drying of the food waste is sucked upward by the exhaust blower 78 rotated by the driving of the exhaust motor 79 and heated and oxidized by the heat generated from the ceramic heater 40. Next, the odor generating substance is deodorized, decomposed, and oxidized by the far infrared rays radiated from the ceramic filter 90 while passing through the ceramic filter 90, and then is discharged to the outside through the exhaust pipe 63 of the exhaust unit 60. .

The air supply motor 59 and the exhaust motors 59 and 79 are continuously driven while fermentation and drying of the food waste proceed.

In this way, while the food waste is being fermented / dried, the temperature in the fermentation tank 20 is detected by the first temperature detection sensor 28 and output to the controller 29, wherein the controller 29 has a fermentation tank 20. Compare or not to determine whether or not the temperature inside is higher than the preset temperature.

When the temperature in the fermentation tank 20 is higher than the preset temperature, the power of the ceramic heater 40 is turned off, and then the heat medium in the heat medium chamber 70 heated by the heat medium heating heater 80 is turned off. The temperature is detected by the second temperature detecting means 29 and input to the controller 29, in which the temperature of the heat medium stored in the heat medium chamber 70 is preset in the controller 29. Compared with whether or not the temperature is higher than the temperature, when the heat medium temperature is higher than the temperature preset in the controller 29, the power applied to the heat medium heating heater 80 is turned off.

On the other hand, when the temperature of the heat medium is lower than the temperature preset in the controller 29 and whether or not the temperature in the fermentation tank 20 is lower than the temperature preset in the controller 29, the heat medium again. Power is again applied to the heating heater 80 and the ceramic heater 40 to increase the temperature of the heat medium and fermentation tank 20.

Next, setting the constant time to 15 minutes by the first and second humidity detection sensors 23a and 23b according to the stirring of the stirrer 30 is described by way of example. The average humidity value of the food waste detected and averaged in units of units is set in advance in the controller 29 by the humidity setting means 35. Compare whether or not it is higher than the humidity value.

The average humidity value of the food wastes detected and averaged by the first and second humidity detection sensors 23a and 23b on a predetermined time basis is preset in the controller 29 by the humidity setting means 35. If it is higher than the humidity value, the first and second humidity detection sensors 23a and 23b set a predetermined time (15 minutes: the predetermined time is set to 15 minutes here by way of example), which is not illustrated. The average humidity value of the food waste detected and averaged in units is lower than the humidity value preset in the controller 29 by the humidity setting means 35. If it is low compared with the controller 29, the first and second humidity detection sensors 23a and 23b use a specific time unit, for example, 5 minutes (this specific time 5 minutes may be changed by the user. Can of course) The controller 29 detects and inputs the same to the controller 29. The controller 29 calculates the average humidity of the food waste to be fermented / dried by averaging the detected humidity for a specific time, and at least three times by the humidity setting means 35. The humidity is compared with the humidity set in the controller 29.

As a result of the comparison, when the average humidity value of the humidity detected by the first and second humidity detection sensors 23a and 23b three times in a specific time unit is lower than the humidity preset in the controller 29, Since the fermentation / drying is completed, the alarm means 39 is sounded and then the controller 29 outputs a reverse rotation drive control signal of the stirring motor 33 to the stirring motor driver 32 in the controller 29 to stir the motor 33. ) By rotating the agitator 30 in reverse rotation to discharge the fermented / dried food waste through the outlet 26 formed in the fermentation tank 20, and the fermented / dried food waste in the fermentation tank 20. Once completely discharged, the main switch is automatically turned off, thereby terminating the fermentation / drying of the food waste.

On the other hand, the average humidity value of the food waste detected and averaged by the first and second humidity detection sensors 23a and 23b on a predetermined time basis is preset in the controller 29 by the humidity setting means 35. If the humidity value is not higher than the predetermined humidity value, the average humidity value of the humidity detected by the first and second humidity detection sensors 23a and 23b three times in a specific time unit is lower than the humidity preset in the controller 29. If the comparison is low, the fermentation / drying of the food waste is completed, so that the alarm means 39 is sounded and then the controller 29 rotates the stirring motor 33 to the stirring motor driving unit 32 in the controller 29. Output the drive control signal to drive the stirring motor 33 in reverse rotation to rotate the stirrer 30 in reverse to discharge the fermented / dried food waste through the outlet 26 formed in the fermentation tank 20, fermentation / drying Food waste reminded When completely discharged in the fermentation tank 20, the main switch is automatically turned off, so that the fermentation / drying of the food waste is terminated.

In the above description, the humidity of the food waste being fermented / dried by the first and second humidity detection sensors 23a and 23b is detected by the stirrer 30 directly above the first humidity detection sensor 23a. After passing through the food waste, the humidity is detected in an empty space that does not cover the first humidity detection sensor 23a, and after passing through the stirrer 30 for a predetermined time, the food waste passes the first waste. The first humidity detection sensor 23a detects the humidity of the food waste in the state of covering the humidity detection sensor 23a, and arithmetic averages the humidity of the food waste detected for a predetermined time, that is, 15 minutes. By storing the value in advance in the controller 29 and comparing it with the humidity value, it is possible to precisely control the fermentation / drying of the food waste.

Therefore, according to the control method of the food waste fermentation / drying apparatus according to the present invention, the external air taken in by the rotation of the air supply blower 52 is heated by the ceramic heater 40 and supplied to the fermentation tank 20, and the heat medium While heating and circulating the heat medium by the heat medium heating heater 80 disposed in the chamber 70, the outer peripheral surface of the fermentation tank 20 is heated to ferment / dry the food waste stirred by the stirrer 30. And calculating the humidity of the food waste detected by the second humidity detection sensors 23a and 23b for a predetermined time in the controller 29 as an average value, and calculating the calculated average humidity value to the controller 29 in advance. Compared with the set humidity value, the fermentation / drying is continued until it is lower than the humidity value preset in the controller 29, and lower than the humidity value preset in the controller 29. In addition, the first and second humidity detection sensors 23a and 23b detect the humidity while fermenting / drying the food waste again at a specific time unit, that is, three times every five minutes, and the average humidity is again obtained by the controller 29. Only when it is lower than the humidity value previously stored in the controller 29, the agitator 30 is rotated backward to discharge the fermented / dried food waste through the discharge port formed in the front of the fermentation tank 20, and also food waste. Odor-generating substances contained in the exhaust gas generated during fermentation / drying are heated and oxidized in the ceramic heater 40 and completely decomposed, deodorized and oxidized by the far infrared rays emitted from the ceramic filter 90. Food waste can be easily fermented and dried without contaminating the air, and at the same time, it is contained in exhaust gases generated during fermentation / drying of food waste. Completely decomposed and seized and taken can be oxidized.

Since the present invention operates as described above, the fermentation / drying of the food waste is detected by the first and second humidity detection sensors 23a and 23b for a predetermined time, arithmetic averaged, and the average value thereof is stored in advance in the controller 29. When the average humidity value is lower than the humidity value previously stored in the controller 29 compared with the humidity value, the stirrer 30 is driven in reverse rotation to discharge the fermented / dried food waste to the outside. Can be fermented / dried.

In addition, the present invention completely decomposes, deodorizes and oxidizes the odor generating substances contained in the exhaust gas generated during the fermentation / drying of food wastes by far infrared rays generated by the ceramic filter 90 and releases them to the atmosphere. Not only can it easily ferment / dry food waste, but also it can precisely control the fermentation / drying of food waste by precisely detecting the humidity of the food waste being fermented and dried, and also fermentation of food waste. Precise control of drying reduces power consumption.

In the above description, the fermentation / drying apparatus of the food waste was described with a specific embodiment, but the present invention is not limited thereto, and for example, various design changes can be made without departing from the concept of the present invention. Of course. Moreover, this invention can also be used also as an extinction period of food waste.

As described above, according to the control method of the food waste fermentation / drying apparatus of the present invention, the humidity of the food waste is detected by the first and second humidity detection sensors on a predetermined time basis, and the detected humidity of the food waste is averaged. If the humidity value is smaller than the humidity value previously stored in the controller, the humidity is detected by the first and second humidity detection sensors while fermentation / drying again three times in a specific time unit, and the average value is obtained and stored in advance in the controller. Compared with the humidity value, the fermentation / drying is performed until the average humidity of the food waste fermented / dried is lower than the humidity value previously stored in the controller, and the exhaust gas generated during the fermentation / drying of the food waste The odor generating substances contained are heated and oxidized in the ceramic heater and radiated by the ceramic filter 90. Has a superior effect in that because the oxidative decomposition and deodorization and by the far infrared ray, without contaminating the ambient air, can be easily fermentation / drying the food waste.

In addition, the present invention detects the humidity of the food waste during the fermentation / drying of the food waste for a predetermined time by the first and second humidity sensor and arithmetic average of the detected value while comparing with the humidity value preset in the controller Since it is configured to ferment / dry food waste, it is possible to not only ferment / dry food waste precisely, but also to reduce energy (power) due to fermentation / drying.

Claims (2)

A controller 29 for controlling the overall operation, a fermentation tank 20 into which food waste is input, a ceramic heater 40 that generates heat to ferment / dry food waste introduced into the fermentation tank 20, and the ceramic heater ( 40 is mounted on the first temperature detection sensor 28 for detecting the temperature in the fermentation tank 20 warmed by the heat of the heat and the heater inserting portion 74 in the heat medium chamber 70 to store the water in the heat medium chamber 70. The heating medium heating heater 80 for heating the heat medium, the second temperature detecting sensor 29 for detecting the temperature of the heating medium oil heated by the heating medium heating heater, the ceramic heater 40 and the heating medium heating. A temperature setting means (38) for setting the heating temperature of the heater (80), a humidity setting means (35) for setting the humidity for drying food waste put into the fermentation tank (20) and outputting it to the controller (29); Stirring the food waste put into the fermentation tank 20 A timer for setting the driving time of the stirring motor 33 and the stirring motor 33 to drive the stirrer 30 so as to stir the semi-annual 30, the food waste put into the fermentation tank 20 for a predetermined time. Receives a control signal output from the controller 29 at the same time receiving the signal set by the timer 31 and the food waste put into the fermentation tank 20 by the stirrer 30 for a predetermined time. Agitated motor driving unit 32 for outputting a signal for driving the stirring motor 33 to agitate, and by inhaling the outside air through the air introduction unit 51 to be suitable for the growth of microorganisms in the fermentation tank (20) An air supply blower 52 which is heated by heat generated by the ceramic heater 40 in the chambers 54 and 55 and discharged into the fermentation tank 20, and an air supply motor 59 which drives the air supply blower 52; Ceramic releasing far infrared rays 90 and the odor and harmful gas contained in the exhaust gas generated by the fermentation / drying of the food waste put into the fermentation tank 20 are heated and oxidized by the heat generated by the ceramic heater 40. And an exhaust blower 78 which is decomposed, oxidized and deodorized by far infrared rays emitted from the ceramic filter 90 and discharged to the outside through the exhaust unit 60, and an exhaust motor 79 driving the exhaust blower 78. ) And the food waste in the fermentation tank 20 are disposed at a predetermined distance from each other near the bottom and are in contact with the food waste introduced into the fermentation tank 20 according to the rotation of the stirrer 30 and in contact with the food waste. First and second humidity detection sensors 23a and 23b for detecting the humidity of the garbage, and the first and second humidity detection sensors 23a and 23b, are subjected to arithmetic average food wastes detected a plurality of times for a predetermined time. Humidity average is fermentation / drying unit of the food waste, characterized in that comprises a warning means (39) for warning when the humidity set value or less by the humidity setting means 35. The food waste fermentation / drying apparatus according to claim 1, wherein the humidity setting means is a dip switch.