KR20000015438A - Method for controlling operation of food waste processor - Google Patents

Abstract

PURPOSE: A method for controlling the operation of a food waste processor is provided to exactly operate the sterilization by exactly measuring the amount of contained water of the contents in a sterilizing tub. CONSTITUTION: The method for controlling the operation of a food waste processor includes the steps of: injecting food waste into a sterilizing tub(5); inputting each measured value to a microcomputer by measuring the outdoor temperature by an outdoor temperature sensor as well as measuring the rate of contained water in the sterilizing tub by a moisture sensing device(11) when selecting a sterilization mode after injecting the food waste; setting the compensation value according to the inputted outdoor temperature to the microcomputer; measuring the input pressure with a heating element constituting the moisture sensing device by the microcomputer as well as measuring the outdoor temperature; setting the compensation value according to the measured fluctuation rate by measuring the fluctuation rate according to the comparison of the previous inputted reference voltage to the microcomputer with the inputted voltage of the measured heating element; designating the final rate of contained water by compensating each compensation value to the rate of contained water by the microcomputer; and operating the sterilization with a sterilization algorithm according to the final rate of contained water.

Description

Operation Control Method of Food Waste Disposer

The present invention relates to a food waste processor, and more particularly, to an operation control method of a food waste processor to accurately measure the amount of water contained in the contents of the fermentation tank by measuring all the effects of the external environment.

In general, the food waste disposal system is a device for fermenting food waste using fermentation bacteria and then reducing the amount of garbage as only the fermentation residues generated and the rest are evaporated. It is true.

In the food waste disposal system, the top cover 3 having the inlet 2 is fixed to the upper portion of the main body 1, and the lid 4 is rotated to open and close the inlet 2 to the top cover 3. The fermentation tank 5 is fixed in a state in which the main body 1 is in communication with the inlet 2 of the top cover 3.

In addition, in the fermentation tank (5), the rotating shaft (8) is installed in a horizontal state so as to receive and drive the driving force of the stirring motor (6) through the power transmission member (7), the rotating shaft (8) a plurality of stirring The wing 9 is fixed in a vertical state orthogonal to the rotating shaft 8, and the heater 10 is installed to heat the fermentation tank 5 while generating heat by being supplied with power to an outer lower surface of the fermentation tank 5. The moisture sensing device 11 is configured to sense the amount of water (hereinafter referred to as “water content”) contained in the contents (food waste + fermentation aid) in the fermentation tank 5 in place of one wall in the fermentation tank 5. Attached.

At this time, the moisture sensing device 11 detects a temperature change of the heat generating element 11a that generates heat according to the application of power and the moisture sensing device 11 according to the heat generated by the heat generating element 11a. In addition, the outside is partitioned from the food waste by the sensor housing (11c) having an empty space therein, the heating element (11a) and the temperature sensor (11b) is epoxy resin or silicone It is fixed to the empty space in the sensor housing 11c by the molding agent 11d such as (silicon) so as not to be influenced by external temperature, humidity and temperature.

Meanwhile, a communication hole 12 is formed at the rear of the upper end of the fermentation tank 5 so as to communicate the inside of the fermentation tank 5 and the inside of the top cover 3, and at the rear of the top cover 3, an exhaust hole 13. ) Is formed, and an exhaust fan 14 is provided near the exhaust hole 13 in the top cover 3.

Therefore, when the user puts the fermentation aid containing the fermentation bacteria into the fermentation tank (5) that is fixed inside the main body (1) and then keep the temperature and humidity inside the fermentation tank (5) in an appropriate state, the activity of the fermentation bacteria becomes active Breeding in the fermentation tank (5).

In such a state, the user opens the lid 4 rotatably installed on the top cover 3 of the upper part of the main body 1 to dispose of food waste to be treated in the state in which the inlet 2 of the top cover 3 is opened. After entering into the fermenter (5), close the lid (4) and select the fermentation mode, the contents of the moisture sensing device (11) attached to one side wall portion in the fermenter (5) filled in the fermenter (5) The moisture content of the waste + fermentation aids is sensed to convert the sensed value into a moisture value and send it to a microcomputer (not shown), and the microcomputer controls the algorithm according to the sensed moisture value (heater temperature, stirring time of the stirring blade). And the rest time, the air supply amount) is set accordingly to operate the food waste processor.

The water content measurement by the moisture sensing device 11 and the control according to this will be described in detail as follows.

First, power is also applied to the heating element 11a constituting the moisture sensing device 11 in accordance with the supply of power to the device so that the heating element 11a generates heat in the sensor housing 11c while transferring heat to the sensor housing 11c. In addition, the temperature sensor 11b fixed together with the heating element 11a in the sensor housing 11c measures the temperature of the sensor housing 11c.

As such, the temperature detected by the temperature sensor 11b is converted into a moisture value and sent to a microcomputer (not shown), and the microcomputer converts the value into a water content ( S Will be judged.

In this case, the external temperature value may be T ₁ ) Is measured, and the measured temperature value is inputted to a microcomputer (not shown) and the reference temperature value previously inputted to the microcomputer ( T Compared with the measured temperature value ( T ₁ ) And reference temperature value ( T ), That is, the compensation value according to the external temperature ( α ) Is the moisture content measured by the S ) Will be compensated.

This is based on the moisture content measured by the moisture sensing device S As described in more detail with reference to Figure 4 showing the exact moisture content to measure the exact difference as) can be as follows.

First, the external temperature measured as described above ( T ₁ ) Is the reference temperature (indicated in micom) T Higher than), the compensation value for this difference ( α ₁ ) Is set and the compensation value ( α ₁ ) Is the moisture content (measured by the moisture sensing device 11) S ) To the final function rate ( S ₁ ) Can be set.

On the other hand, the external temperature measured as described above ( T ₁ ) Is the reference temperature (indicated in micom) T If lower than), the compensation value for this difference ( α ₂ ) Is set, and the compensation value ( α ₂ ) Is the moisture content (measured by the moisture sensing device 11) S ) To the final function rate ( S ₂ ) Can be set and the measured external temperature ( T ₁ ) Is the reference temperature (indicated in micom) T ), The moisture content (measured by the moisture sensing device 11) S ) Is the final function rate.

As a result, the microcomputer has an agitation cycle of the stirring blade 9, an operating temperature of the heater 10, a power supply cycle according thereto, and an exhaust fan 14 for adjusting the air supply amount by the final moisture content set as described above. It is understood that the optimum conditions for fermentation can be achieved by appropriately controlling the rotational speed of.

At this time, the stirring blade (9) is the stirring period, that is, the stirring time and the stirring motor that the forward and reverse rotation of the stirring blade (9) according to the forward, reverse driving of the stirring motor (6) for a predetermined time ( 6) stirring is performed according to the idle time when the driving is not performed, and the heater 10 repeats the on and off of the heater 10 on the basis of its operating temperature, that is, the appropriate temperature in the fermentation tank 5. The heating is performed by always reaching the proper temperature.

When the control of each part is made in this way, the heating of the heater 10 installed on the outer lower surface of the fermentation tank 5 is selectively performed, thereby maintaining the inside of the fermentation tank 5 at an appropriate temperature at all times and the stirring motor 6. The drive is also made selectively, so that the stirring of the food waste and the fermentation aid by the stirring wing (9) is made smooth.

On the other hand, at this time, the exhaust fan 14 installed near the exhaust hole 13 in the top cover 3 is constantly rotating, and contaminated air in the inside of the device is transferred to the outside through the exhaust hole 13. In addition to being discharged, the outside fresh air is sucked into the fermentation tank 5 through an intake hole (not shown) formed in the main body 1 due to the suction force according to the air discharge and at the same time food waste is fermented in the fermentation tank 5. Exhaust gas generated by the exhaust gas is discharged into the top cover 3 through the communication hole 12 formed in the upper rear of the fermentation tank 5, and then exhausted by the operation of the exhaust fan 14. With the air discharged through (13) it exits to the outside.

In addition, after the fermentation operation is performed for a predetermined period by the control set as described above, the moisture content of the contents (food waste + fermentation aid) filled in the fermentation tank 5 is sensed by the moisture sensing device 11 in the fermentation tank 5 again. By controlling the proper fermentation algorithm according to the moisture content at this time.

As a result, each process as described above is sequentially and at the same time operating properly according to the control algorithm is a food waste fermentation.

On the other hand, in the food waste treatment machine performing the above operation, the water content in the fermentation tank measured by the moisture sensing device occupies many factors to perform the operation of each component, so accurate measurement should always be made.

However, the heating element constituting the conventional moisture sensing device has a large difference in the amount of heat generated according to the input voltage, which will be described in more detail as follows.

In general, the amount of heat (P) generated by a heating element is determined according to Joule's law. I ² R You can get this formula, again Ohm's law V = IR When applied to Can be obtained.

As can be seen from the relational expression, the calorific value of the heating element constituting the moisture sensing device is shown in FIG. V ), There are many differences.

However, these input voltages V Since the compensation according to) is not conventionally performed, the heating temperature of the heating element is changed greatly according to the change in the power supply voltage supplied to the heating element of the moisture sensing device, and accordingly, the output of the moisture sensing device input to the microcomputer at the same moisture content. There was also a problem that the voltage was also greatly varied, so that the accurate moisture content was not measured.

In addition, each fermentation algorithm according to the water content measured as described above is also conventionally in a state where the water content of the contents of the fermentation tank is much lower than the reference value, that is, in the dried state does not have proper control for this, only to carry out the fermentation with a general fermentation algorithm. Accordingly, there is a problem that the fermentation tank is further dried, and thus, the life of the fermentation bacteria contained in the fermentation aid is greatly shortened, and thus the fermentation aid has to be replaced.

The present invention has been made to solve the conventional problems as described above, by precisely measuring the water content of the contents of the fermentation tank constituting the food waste processor to control to perform an accurate fermentation operation and the contents of the fermentation tank during fermentation operation Its purpose is to enable proper operation of the moisture content of

According to an aspect of the present invention for achieving the above object, the step of injecting food waste into the fermentation tank constituting the food waste disposal; When the fermentation mode is selected after the food waste is input, measuring the moisture content in the fermentation tank by a moisture sensing device and measuring the external temperature by an external temperature sensor and inputting each measured value to the microcomputer; Setting a compensation value according to an external temperature input to the micom; Measuring an input voltage to a heating element constituting the moisture sensing device by a microcomputer together with the measurement of the external temperature; Setting a compensation value according to the measured change rate by measuring a change rate according to a comparison between the measured input voltage of the heating element and a reference voltage previously input to the microcomputer; Designating a final function rate by compensating each compensation value measured by the microcomputer to a previously inputted water content rate; The operation control method of the food waste processor is characterized in that the step of performing the fermentation operation by the fermentation algorithm according to the final water content is made sequentially.

1 is a perspective view of a conventional general food waste disposer

Figure 2 is a cross-sectional view of a conventional general food waste handler

Figure 3 is a longitudinal cross-sectional view of a conventional general food waste disposer

4 is a flowchart illustrating an operation control method according to a water content determination of a conventional food waste processor.

5 is a flowchart illustrating an operation control method according to the water content determination of the food waste processor according to the present invention.

Hereinafter, with reference to Figure 5 showing an embodiment of the present invention in more detail as follows.

FIG. 5 is a flowchart illustrating an operation control method according to a water content determination of a food waste processor according to the present invention. In the configuration and operation of the present invention, portions overlapping with those of the conventional configuration and operation are omitted, and the same structure is omitted. Only the same reference numerals as in the prior art are given.

In the operation control method of the food waste processor according to the present invention, first, the food waste is put into the fermentation tank 5 of the food waste processor according to the needs of the user, and then the lid 4 is closed.

In this state, when the user selects a fermentation mode (not shown), the moisture content of the contents (food waste + fermentation aid) in the fermentation tank 5 by the moisture sensing device ( S ) Is measured and the measured moisture content ( S ) Is input to a microcomputer (not shown).

In addition, at this time, the external temperature measured by an external temperature sensor (not shown) is also input to the microcomputer, and the external temperature inputted in this way is compared with the reference temperature pre-inputted in the microcomputer and compensated by the microcomputer ( α ) Is determined.

On the other hand, while the process is in progress, the microcomputer (not shown) measures the input voltage to the heating element 11a constituting the moisture sensing device 11, the input voltage ( V ₁ ) Is the reference voltage pre-input to the microcomputer V ) And thus the rate of change, that is, the compensation value ( β ) Is a compensation value according to the external temperature ( α Water content of fermenter together with S ) To compensate for the final function rate ( S _s ).

At this time, the final function ratio ( S _s The process of specifying) is described in more detail as follows.

First, an input voltage input to the heating element 11a ( V ₁ ) Is the voltage input to the microcomputer (not shown). V If higher than), the moisture content ( S ) According to the external temperature α ) And at the compensated moisture content input voltage ( V ₁ ) And reference voltage ( V Compensation value for the difference β ₁ ) And subtract the value S ₁ = - β ₁ )

On the other hand, the input voltage input to the heating element 11a ( V ₁ ) Is the voltage input to the microcomputer (not shown). V If it is lower than), the moisture content (preset) S ) According to the external temperature α ) And at the compensated moisture content input voltage ( V ₁ ) And reference voltage ( V Compensation value for the difference β ₂ ) And add the value to the final function rate ( S ₂ = + β ₂ ) And the input voltage input to the heating element ( V ₁ ) Is the voltage input to the microcomputer V In case of equal to), the moisture content ( S ) According to the external temperature α ) And the final function rate To be specified.

At this time, the input voltage to the heating element ( V ₁ ) And the reference voltage already input to the microcomputer V Compensation value for the difference β ) Is also already entered into the microcomputer, the appropriate compensation value is determined by the judgment of the microcomputer.

Thus the final function rate ( S _s ), The stirring period (stirring time + rest time) of the contents in the fermentation tank, the operating temperature of the heater, and the air inflow amount are set according to the final water content.

On the other hand, the fermentation algorithm according to the present invention when the final water content specified as described above is lower than the standard water content, that is, when the moisture contained in the contents of the fermentation tank (5) is dry (hereinafter referred to as "dry state") When the water contained in the contents of the fermentation tank is a standard (hereinafter referred to as "standard state") when described in more detail compared to the fermentation algorithm as follows.

First, during the stirring cycle of the stirring motor (or stirring blade) 6 set by the microcomputer (not shown) in the dry state, the stirring time during which the stirring blade 9 rotates in accordance with the driving of the stirring motor is in a standard state. At the same time, the stirring motor is controlled to be made for the same time and the stirring motor is not driven, that is, the stirring time when the stirring blade is not rotated is set to be made for twice as long as the idle time in the standard state. .

The reason for doing this is that when the dry state, the moisture in the fermentation aid should be preserved according to the lack of water, so that the stirring time is shorter during the entire stirring cycle (stirring time + rest time), and the rest time is no longer set. It is understood that the fermentation aid prevents drying.

In addition, the exhaust fan 14 during the stirring cycle made as described above is prevented from drying the fermentation aid by performing an intermittent operation, unlike the prior art, wherein the exhaust fan is not operating time than the operation time It will be controlled for a long time.

It is most preferable to control the operation time of the exhaust fan 14 such that it is generally performed only for about 1/9 time than the non-operation time, which minimizes the drying of the contents of the fermentation tank 5 and This is because the minimum amount of air needed is the most appropriate time ratio to allow for supply.

As a result, when the operation control algorithm by the microcomputer (not shown) is set as described above, the operations of the respective parts constituting the food waste processor are performed by the control of the microcomputer, and fermentation of the food waste to be processed is performed.

On the other hand, after the fermentation operation is performed by the control of the microcomputer (not shown) for a predetermined period in this way, the water content of the contents in the fermentation tank 5 is measured again and appropriate compensation according to various external environments as described above. As a result, by repeatedly performing another operation according to the final water content obtained, the treatment of food waste is completed.

As described above, the present invention allows the water content measured by the moisture sensing device to be appropriately compensated according to the external temperature and the appropriate compensation according to the rate of change of the voltage input to the heating element of the moisture sensing device. The moisture value can be measured accurately at all times, thus providing the appropriate control.

In addition, when the moisture contained in the contents of the fermenter in the dry state, that is, according to the present invention, the appropriate operation control is made according to the moisture contained in the fermentation aid in the fermentation tank and included in the fermentation aid It is effective to improve the fermentation efficiency by protecting the fermented bacteria.

Claims (4)

Injecting food waste into the fermentation tank constituting the food waste disposal machine; When the fermentation mode is selected after the food waste is input, measuring the moisture content in the fermentation tank by a moisture sensing device and measuring the external temperature by an external temperature sensor and inputting each measured value to the microcomputer; Setting a compensation value according to an external temperature input to the micom; Measuring an input voltage to a heating element constituting the moisture sensing device by a microcomputer together with the measurement of the external temperature; Setting a compensation value according to the measured change rate by measuring a change rate according to a comparison between the measured input voltage of the heating element and a reference voltage previously input to the microcomputer; Designating a final function rate by compensating each compensation value measured by the microcomputer to a previously inputted water content rate; Operation control method of the food waste processor characterized in that the step of performing the fermentation operation with the fermentation algorithm according to the final water content is made sequentially. The method of claim 1, The method of designating the final function rate by compensating for the rate of change according to the comparison of the input voltage to the heating element input to the microcomputer and the reference voltage previously input to the microcomputer is based on the external moisture at the previously inputted moisture content when the input voltage is higher than the reference voltage. Compensate for the compensation value and subtract the compensation value according to the difference between the input voltage and the reference voltage to the compensated moisture content, and specify the value as the final function rate, and if the input voltage is lower than the reference voltage, Compensate the compensation value according to the external temperature and add the compensation value according to the difference between the input voltage and the reference voltage to the compensated moisture content, and designate the value as the final function rate. Compensating the compensation value according to the external temperature to the moisture content, and the step of designating the compensated moisture content as the final moisture content is sequentially The operation control method of garbage disposal, characterized in that the word so. The method of claim 1, In the fermentation algorithm according to the final water content, if it is determined that the water content in the contents of the fermentation tank is small according to the final water content, the stirring time for the stirring of the content is the same time as the stirring time when the water content in the content is standard The operation by the exhaust fan is set to perform the intermittent operation, and the idle time without stirring of the contents is performed for twice the time when the moisture contained in the contents is the standard. In addition, the operation by the exhaust fan and the operation control method of the food waste processor, characterized in that it is set to perform the intermittent operation. The method of claim 3, wherein During the intermittent operation of the exhaust fan, the exhaust fan is operated for a longer time than the operating time, thereby minimizing drying of the contents of the fermentation tank and minimizing air required for fermentation. Operation Control Method of Food Waste Disposer.