JP2011177134A - Device for producing malted rice, performing air conditioning control by using temperature gradient difference - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for producing malted rice, performing air-conditioning control by using a temperature gradient difference, which can control ventilation by taking-in the tendency of over time change of the amount of heat generation of the malted rice itself, and can quickly control toward an objective set malted rice temperature in a good accuracy. <P>SOLUTION: An air-conditioning control means 30 of the malted rice production device is constituted by setting the temperature change of the cultured malted rice over time in advance and memorizing the same as a set malted rice temperature (SeKT) curve, from the measured malted rice temperature (MeKT) measured with time and the set malted rice temperature (SeKT) curve, at each of time points during the culture, adopting a standard wind quantity (SWQ) and a standard wind temperature (SWT) corresponding to the temperature difference (ΔT) between the two, also calculating the temperature gradient difference (ΔG) of the temperature gradient (MeKG) of the measured malted rice temperature (MeKT) and the temperature gradient (SeKG) of the set malted rice temperature (SeKT) curve, and deciding a real wind quantity (RWQ) and a real wind temperature (RWT) by adding collections to the standard wind quantity (SWQ) and standard wind temperature (SWT) based on the temperature gradient difference (ΔG). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a koji making apparatus that performs air conditioning control using a temperature gradient difference, and more specifically, a blowing means that blows air to a koji making room provided with a koji culture bed, a blowing amount by the blowing means, and a blowing temperature. The present invention relates to a iron making apparatus that performs air conditioning control using a temperature gradient difference provided with an air conditioning control means for controlling the air conditioning.

In a koji making apparatus that inoculates a koji raw material with microorganisms, koji temperature control during fermentation includes blowing of conditioned air by an air conditioner and stirring of a koji deposit layer by a care device.
The temperature adjustment of the soot by the blowing of the conditioned air includes the adjustment of the blowing amount, the adjustment of the blowing temperature, and indirectly the adjustment of the blowing humidity.
As a technology for automatically adjusting the temperature of the soot according to the air volume and the air temperature, there are many techniques that initially control the air volume and the air temperature in a fixed pattern with respect to the elapse of the iron making time. .
On the other hand, recently, a technique for adjusting the air flow rate and the air temperature according to the difference between the target soot temperature and the measured soot temperature has been disclosed, including the following Patent Document 1 disclosed by the present applicant. ing.

JP-A-8-317783

However, in the prior art described in Patent Document 1 and the like, the air flow rate and the air temperature of the conditioned air are only adjusted based on the temperature difference between the measured soot temperature and the target soot temperature at the time of measurement. Therefore, there is a problem that the soot temperature cannot be adjusted promptly and accurately.
That is, the koji itself generates heat during fermentation, and the amount of heat generated changes with time. Therefore, even with the same measured soot temperature, if the calorific value is large, the soot temperature will tend to increase rapidly thereafter, while if the calorific value is small, the subsequent soot temperature rise will stop slightly. Has a trend.
In the above-described prior art, such air conditioning control that sufficiently considers the heat generation characteristics of the soot itself is not performed, and the actual soot temperature is corrected quickly, accurately, and reliably with respect to the set soot temperature. There was a problem that I could not.

  Therefore, the present invention solves the above-mentioned problems of the prior art, and can perform soot temperature control that incorporates the tendency of the heat generation amount of the soot itself to change over time, and thus quickly and accurately with respect to the target set soot temperature. An object of the present invention is to provide a steelmaking apparatus that performs air-conditioning control using a temperature gradient difference that can stably approximate the temperature of a measuring soot.

The iron making apparatus that performs air-conditioning control using the temperature gradient difference of the present invention that achieves the above-described problems is provided with one or a plurality of culture beds in the iron making room and air blowing to the iron making room, and the air blowing Air conditioning control means for controlling at least the air flow rate and the air temperature by the means, wherein the air conditioning control means presets the time-dependent temperature change of the koji cultured in the culture bed and sets this as a set koji temperature curve As the measurement temperature measured over time and the set temperature curve, the standard air flow rate and the standard air temperature corresponding to the temperature difference between them are adopted at each time point during the culture and the measurement is performed. Calculating a temperature gradient difference between the temperature gradient of the soot temperature and the temperature gradient of the set soot temperature curve, and based on the temperature gradient difference, either one or both of the standard air blowing amount and the standard air blowing temperature is constant. Make corrections , And the first, characterized in that it is constituted to determine the actual air volume and the actual blowing temperature at each time point during culture.
In addition to the first feature described above, the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to the present invention can obtain the air-conditioning control means through experiments performed in advance on the temperature gradient difference and the air flow correction associated therewith. Then, using the stored empirical formula, the air flow rate correction coefficient is calculated at each time point during the culture by applying the temperature gradient difference to the empirical formula, and the obtained air flow rate correction coefficient is obtained as the standard feed rate at that time. The second feature is that the actual air flow rate is determined by multiplying the air flow rate.
In addition to the first or second feature, the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to the present invention determines the standard air flow rate by the air-conditioning control means, and determines the measured soot temperature and the set soot temperature. The third feature is that the temperature is determined for each measurement soot temperature corresponding to the temperature difference.
In addition to the third feature described above, in the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to the present invention, the standard air flow rate is set in advance when the measured soot temperature is in the temperature range below the set soot temperature. If the measured soot temperature is above the second high temperature region that is higher than the set soot temperature by a certain temperature or higher, the preset maximum air flow rate is used. In the first high temperature region between them, the intermediate feed by PID control is used. The fourth characteristic is that the air volume is set.
Further, in addition to any one of the first to fourth features, the air conditioning control means for the air conditioning control unit that performs the air conditioning control using the temperature gradient difference according to the present invention is configured to detect the difference between the measured soot temperature and the set soot temperature. In response, the preset standard correction temperature value is stored, and the standard correction temperature value is added to the set temperature to obtain the standard blast temperature at each time point during the culture. Using the empirical formula obtained and memorized in advance for the difference and the blast temperature correction associated therewith, the blast temperature correction coefficient is calculated at each time point during the culture by applying the temperature gradient difference to the empirical formula. The actual correction temperature value is determined by multiplying the standard correction temperature value at that time by the obtained blast temperature correction coefficient, and the actual correction temperature value is added to the set salmon temperature, so that Configuration to determine the actual air temperature and And a fifth characteristic in that are.
In addition to the fifth feature described above, the iron making device that performs air conditioning control using the temperature gradient difference according to the present invention has a standard correction temperature value of 0 in the set temperature and the first temperature range within the upper and lower fixed ranges. In the second temperature region outside the first temperature region, a value obtained by subtracting the measured soot temperature from the boundary temperature with the first temperature region, and in the third temperature region outside the second temperature region, the first temperature region A sixth feature is that a value obtained by subtracting the boundary temperature between the second temperature region and the third temperature region from the boundary temperature between the temperature region and the second temperature region is used.
Moreover, the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to the present invention, in addition to any one of the above second to sixth features, the air flow rate correction coefficient and the air temperature correction coefficient indicate the temperature gradient difference. A seventh feature is that the calculation is performed for each culturing stage of the sputum over time by applying the empirical formula for each culturing stage over time.

In the iron making apparatus which performs air-conditioning control using the temperature gradient difference according to claim 1, the air-conditioning control means adjusts the temperature difference between the measured salmon temperature and the preset salmon temperature curve stored in advance at each time point during salmon culture. Use the corresponding standard air flow and standard air temperature. The air-conditioning control means calculates a difference in gradient between the temperature gradient of the measured soot temperature and the temperature gradient of the set soot temperature curve at each time point during sputum culture.
The temperature gradient of the measured soot temperature is a value that can indicate the magnitude of the actual calorific value of the soot at that time. The temperature gradient of the set soot temperature curve is a value indicating the degree of change in the amount of heat generated by the soot at that time. The difference in temperature gradient between the two is large because the difference between the actual calorific value and the expected calorific value of the soot at that time is large, and the effect on the subsequent change in the measured soot temperature is greatly different between the two. is there. Therefore, it is not possible to sufficiently adjust the soot temperature by simply adjusting the air flow using only the standard air flow and the standard air temperature corresponding to the temperature difference between the measured soot temperature and the set soot temperature curve.
According to the iron making apparatus for performing air conditioning control using the temperature gradient difference according to the first aspect of the present invention, the air conditioning control means is configured to perform the standard feeding based on the temperature gradient difference between the measured soot temperature and the set soot temperature. Since it is configured to determine the actual air flow rate and the actual air temperature at each time point during culture by adding a certain correction to either or both of the air flow and the standard air temperature, the heat generation of the cocoon itself during the culture麹 Temperature control that incorporates the tendency of changes in quantity over time can be performed, and therefore, it is possible to measure quickly, accurately, and stably with respect to the target set 先 temperature, including read-ahead control for changes in 麹 temperature immediately after.麹 The temperature can be approximated.

According to the iron making apparatus that performs air conditioning control using the temperature gradient difference according to claim 2, in addition to the operational effects of the configuration according to claim 1, the air conditioning control means is provided at each time point during the cultivation of the koji. The air flow rate correction coefficient is calculated by applying the temperature gradient difference to the empirical formula, and the actual air flow rate is determined by multiplying the air flow rate correction coefficient by the standard air flow rate. Since the empirical formula is obtained by an experiment performed in advance on the temperature gradient difference and the air flow correction associated therewith, it is possible to obtain a formula that is more suitable for actual anther culture. Therefore, by applying a temperature gradient difference to this, it is possible to obtain a blowing rate correction coefficient that is more suitable for actual anther culture. By multiplying the standard air flow rate by this air flow rate correction coefficient, the heat generation state of the koji and its changes are taken into account, and the temperature of the koji is quickly adjusted with the actual air flow rate that is more suitable for actual koji culture. In addition, it can be adjusted accurately and stably.
According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 3, in addition to the operational effects of the configuration according to claim 1 or 2, the standard air flow rate is determined by the air-conditioning control means. Corresponds to the temperature difference between the measured soot temperature and the set soot temperature, and is determined for each measured soot temperature.
The value of the standard air flow rate itself that is used to calculate the actual air flow rate using the temperature gradient difference, which takes into account the heat generation tendency of the firewood, is an appropriate value corresponding to the temperature difference between the measured firewood temperature and the set firewood temperature. Therefore, as a whole, fine air flow control that is more suitable for actual koji culture can be performed.

According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 4, in addition to the function and effect of the configuration according to claim 3, the standard air flow rate is set by the measuring air temperature. When it is in the temperature range below the temperature, it is regarded as the base air flow rate, and when the measured soot temperature is above the second high temperature region that is higher than the set soot temperature by a certain temperature or more, it is regarded as the maximum air flow rate. In the area, the middle layer air volume is controlled by PID control.
The adjustment of the cocoon temperature by adjusting the air flow rate generally has less adverse effects on the growth of the cocoon than the adjustment of the cocoon temperature by adjusting the blast temperature.
When the measured soot temperature is equal to or lower than the set soot temperature, the base airflow rate is used as the standard airflow rate. The base air blowing amount is set to an air blowing amount that does not suppress the growth of the cocoon (heat generation by the cocoon) and is suitable for temperature equalization by stirring in the cocoon making room. This base air blowing amount can be determined in advance by experiments or the like.
Further, the first high temperature region is a temperature region in which the soot temperature can be adjusted only by adjusting the air flow rate without adjusting the air blowing temperature. This first high temperature region can be determined in advance by experiments or the like.
The second high temperature region is a temperature region in which it is difficult to adjust the soot temperature only by adjusting the air flow rate, that is, a region above the first high temperature region. This second high temperature region can be determined in advance by experiments or the like.
According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 4, as described above, the temperature region is set to the temperature region below the set soot temperature, the first high temperature region, and the second high temperature region. Since it is divided into three regions, it is configured to blow with the basic air flow rate in the temperature region below the set soot temperature, with the intermediate air flow rate by PID control in the first high temperature region, and with the maximum air flow rate over the second high temperature region. The primary adjustment of the cocoon temperature can be performed by a relatively simple air flow rate adjustment, and the degree of adjustment of the cocoon temperature by adjusting the blast temperature can be reduced to ensure good growth of the cocoon.

According to the iron making apparatus that performs air conditioning control using the temperature gradient difference according to claim 5, in addition to the operational effect of any of the configurations of claims 1 to 4, the air conditioning control means includes a measured soot temperature and A standard correction temperature value preset in accordance with the difference from the set soot temperature is stored. Then, the air conditioning control means adds the standard correction temperature value to the set salmon temperature, thereby obtaining the standard air blowing temperature at each time point during the culture. The air-conditioning control means calculates the blowing temperature correction coefficient by applying the temperature gradient difference to the empirical formula at each time point during the sputum culture. Then, the actual correction temperature value at that time is determined by multiplying the standard correction temperature value by the blowing temperature correction coefficient. Since the empirical formula is obtained from an experiment performed in advance on the temperature gradient difference and the accompanying air temperature correction, the air temperature correction coefficient and the actual corrected temperature value can be obtained in conformity with the actual koji culture. The air conditioning control means determines the actual blowing temperature by adding the actual corrected temperature value to the set soot temperature.
According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 5, not only the temperature difference between the measured salmon temperature and the set salmon temperature at each time point during salmon culture, The temperature of the cocoon itself during cultivation can be controlled by adjusting the blast temperature, taking into account the tendency of the calorific value of the cocoon itself to change over time due to the temperature gradient difference from the set temperature of the cocoon. The measurement temperature can be approximated quickly, accurately and stably with respect to the set temperature.

According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 6, in addition to the function and effect of the structure of claim 5, the standard correction temperature value is the set soot temperature and a certain range above and below it. It is set to 0 in the first temperature range. This first temperature region is set as a region in which the soot temperature is close to the set soot temperature and does not need to be adjusted by the blowing temperature. This first temperature region can be determined in advance by experiments or the like.
The standard corrected temperature value is a value obtained by subtracting the measured soot temperature from the boundary temperature with the first temperature region in the second temperature region. This second temperature region is a temperature region that gradually deteriorates the quality of the soot. In the second temperature region, the blast temperature adjustment is performed with the difference between the measured soot temperature and the boundary temperature between the first temperature region as the standard correction temperature value. The second temperature region can be determined in advance by experiments or the like.
The standard correction temperature value is obtained by subtracting the boundary temperature between the second temperature region and the third temperature region from the boundary temperature between the first temperature region and the second temperature region in the third temperature region outside the second temperature region. Value. This third temperature region is a temperature region that deteriorates the quality of the soot. Therefore, when the measured soot temperature is in this region, it is necessary to correct the temperature in the direction of the second temperature region as quickly as possible. However, even if the measured soot temperature is greatly deviated from the set soot temperature, it is not preferable to drastically increase or decrease the air blowing temperature because the adverse effect on the soot growing is great. Therefore, in the third temperature range, even if the measured soot temperature is a value that is far away from the outside of the second temperature range, the standard corrected temperature value and the temperature difference corresponding to the width of the second temperature range are obtained. To do. This restricts excessive changes in the blast temperature and adjusts the air conditioning while avoiding adverse effects on cocoon growing. The third temperature region can be determined in advance by experiments or the like.

According to the iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 7, in addition to the function and effect of any of the above-described configurations of claim 2 to 6, the blowing amount correction coefficient and the blowing temperature correction coefficient Since the temperature gradient difference is applied to the empirical formula for each culturing stage of the sputum over time, it is configured to be calculated for each culturing stage of the sputum over time,
Depending on the time-dependent changes in the calorific value of the sputum cultivated, air conditioning can be performed using an appropriate air flow correction coefficient and air temperature correction coefficient for each culture stage over time. You can make a trap.

It is a schematic block diagram of the iron making apparatus which performs air-conditioning control using the temperature gradient difference which concerns on embodiment of this invention. It is a figure which shows the example of the setting soot temperature curve memorize | stored in the iron making apparatus which performs air-conditioning control using the temperature gradient difference which concerns on embodiment of this invention. It is a figure explaining the ventilation control by the air-conditioning control means of the iron making apparatus which performs air-conditioning control using the temperature gradient difference which concerns on embodiment of this invention. It is a flowchart explaining the ventilation control by the air-conditioning control means of the iron making apparatus which performs air-conditioning control using the temperature gradient difference which concerns on embodiment of this invention.

  With reference to the following drawings, the iron making apparatus which performs air-conditioning control using the temperature gradient difference which concerns on this invention is demonstrated, and it uses for an understanding of this invention. However, the following description does not limit the invention described in the claims of the present invention.

  First, referring to FIG. 1, a iron making apparatus that performs air-conditioning control using a temperature gradient difference according to the present invention has a iron making room 10. In the iron making chamber 10, for example, a disc-shaped culture bed 11 is provided. Straw material is laminated on the culture bed 11 and the cocoon is inoculated by inoculating microorganisms. In this embodiment, the culture bed 11 is provided in one stage (one), but a plurality of stages (a plurality) may be provided. The culture bed 11 is provided in a horizontal state in the iron making chamber 10 and is configured to rotate in the horizontal direction, thereby ensuring the homogeneity of the culture bed 11. The koji raw material is transported to the culture bed 11 by the transporter 12. Moreover, the soot deposit layer on the culture bed 11 is stirred by the stirrer 13 as necessary.

The air to the koji making chamber 10 is blown by the blowing means 20 from the lower blowing port 14 of the koji making chamber 10, passes through the culture bed 11 from below, and is discharged from the upper exhaust port 15. It is configured.
The air blowing means 20 includes a duct 21, a damper 22, a blower fan 23, and a temperature adjusting unit 24. Air blowing to the iron making chamber 10 is performed through the duct 21. The air exhausted from the exhaust port 15 of the iron making chamber 10 is discharged to the outside through the damper 22 or circulated to the blower fan 23 side. External air is also taken in via the damper 22. Of course, the air blowing means 20 is not limited to those using the duct 21, the damper 22, the air blowing fan 23, and the temperature adjusting unit 24. What is necessary is just to equip the iron making room 10 with the mechanism which can ventilate.
In the present embodiment, the air temperature is increased / decreased by the air circulated from the iron making chamber 10 and the air taken from the outside by adjusting the damper 22. The temperature adjusting unit 24 also increases or decreases the blowing temperature. In addition, the increase and decrease of the air volume is performed by the air fan 23.

Control of the air volume and the air temperature by the air blowing means 20 is performed by an air conditioning controller 30 which is air conditioning control means.
The air conditioning controller 30 includes a computer including a storage unit, a calculation unit, and a comparison unit.
The temperature information necessary for control by the air conditioning controller 30 is acquired by the soot temperature sensor 16 that detects the soot temperature and the air temperature sensor 17 that detects the air temperature. If necessary, an exhaust temperature sensor 25 for detecting the exhaust temperature from the ironmaking chamber 10, an outside air temperature sensor 26 for detecting the temperature of the outside air, and other temperature sensors are provided to input temperature information to the air conditioning controller 30. You may do it.
The air volume information necessary for the control by the air conditioning controller 30 can be obtained from the rotational speed of the blower fan 23 or the output of the blower fan 23. However, an air volume sensor may be provided in the vicinity of the air outlet 14 to input the air volume information.
A control command from the air conditioning controller 30 is issued to the blower fan 23, the damper 22, and the temperature adjustment unit 24 of the blower unit 20. The blower fan 23 realizes a predetermined blow amount based on a blow amount control command from the air conditioning controller 30. Further, the damper 22 and the temperature adjusting unit 24 realize a predetermined blowing temperature based on a blowing temperature control command from the air conditioning controller 30.

  The air-conditioning controller 30 presets a time-dependent temperature change of the koji cultured on the culture bed 11 and stores this as a set koji temperature (SeKT) curve. The set cocoon temperature curve is set through a number of experiments in advance as a curve representing a change in temperature of the cocoon over time, which is a target in cocoon culture growth. FIG. 2 shows an example of the set soot temperature curve. This example shows an example of a set koji temperature curve for koji making in soy sauce production, and is divided into first to fifth culture stages (ST1 to ST5) according to the temporal change characteristics of the calorific value of koji to be cultured. Has been.

The air conditioning controller 30 detects the temperature gradient (MeKG) of the measured soot temperature (MeKT) obtained by the soot temperature sensor 16 at each time point during the sputum culture and the temperature gradient (SeKT) curve of the set sputum temperature (SeKT) curve at each corresponding time point. The temperature gradient difference (ΔG) with SeKG) is calculated.
The temperature gradient difference (ΔG) can be calculated by the following equation 1, for example.

ΔG (° C./min)={(MeKT ₀ −MeKT ₋₁₀ ) − (SeKT ₀ −SeKT ₋₁₀ )} ÷ 10 ··· Equation 1
here,
ΔG (° C./min): Temperature gradient difference between the measured cocoon temperature and the set cocoon temperature at each time point of culturing MeKT ₀ : current measured cocoon temperature MeKT ₋₁₀ : measured cocoon temperature 10 minutes before SeKT ₀ : current setting麹 Temperature SeKT _-10 : Set の temperature 10 minutes ago

In the above equation 1, the temperature change (MeKT) of the measured soot temperature (MeKT) is considered as the temperature gradient (G) in each of the measured soot temperature (MeKT) and the set soot temperature (SeKT). And the temperature gradient (SeKG) difference between the set soot temperature (SeKT) and the temperature gradient difference (ΔG) per minute. Of course, the time unit for measuring the temperature change between the measured soot temperature (MeKT) and the set soot temperature (SeKT) is not necessarily 10 minutes. Other time intervals can be adopted as a unit, such as 5 minutes or 1 minute. For example, at the stage where the temperature change in the early stage or the latter half of the iron making is small, such as the first culture stage (ST1) and the fifth culture stage (ST5) in FIG. 2, the temperature is measured at intervals of 5 minutes or more. , Can be operated. Moreover, in the 2nd-4th culture stage (ST2-ST4), since the heat | fever of a sputum becomes intense, you may make it calculate by measuring temperature at intervals around 1 minute. Although the measured soot temperature (MeKT) is continuously measured, a temperature difference can be calculated at an arbitrary time interval to calculate a temperature gradient difference (ΔG).
In the above formula 1, the temperature gradient difference (ΔG) per minute is calculated, but the unit is not limited to one minute. The temperature gradient difference (ΔG) may be calculated in units of 1 second, 30 seconds, 5 minutes, 10 minutes, or other time.

The air-conditioning controller 30 corresponds to the difference between the measured soot temperature (MeKT) obtained by the soot temperature sensor 16 and the set soot temperature (SeKT) at the same time at each time point during the soot culture. And standard blast temperature (SWT).
The air-conditioning controller 30 adds the necessary correction to the standard air flow rate (SWQ) by multiplying the standard air flow rate (SWQ) by the air flow rate correction coefficient (WQF) at each time point during the cultivation of the koji, The actual blast volume (RWQ) at each time point is calculated to control the blast volume.
The air flow rate correction coefficient (WQF) can be calculated by applying (substituting) the temperature gradient difference (ΔG) to the empirical equation (Equation 2) stored in advance at each time point during sputum culture.
On the other hand, the air-conditioning controller 30 adds the necessary correction to the standard blowing temperature (SWT) using the standard blowing temperature (SWT) and the blowing temperature correction coefficient (WTF) at each time point during the cultivation of the koji culture. The actual blowing temperature (RWT) at each point in time is calculated, and blowing temperature control is performed.

The standard air flow rate (SWQ) is stored in the storage unit of the air conditioning controller 30 in advance corresponding to the temperature difference (ΔT) between the measured soot temperature (MeKT) and the set soot temperature (SeKT). .
When the measured soot temperature (MeKT) is obtained, the temperature difference (ΔT) between the measured soot temperature (MeKT) and the set soot temperature (SeKT) is calculated, and the standard air flow rate (SWQ) corresponding to the difference is calculated. Is adopted from the memory and determined.

With reference to FIG. 3, the standard ventilation volume (SWQ) which is predetermined and stored in the storage unit will be described.
In FIG. 3, the set salmon temperature (SeKT) curve is drawn assuming the preset salmon temperature (SeKT) curve of the second culture stage (ST2) in FIG. The measured sputum temperature (MeKT) curve is drawn by actually measuring the sputum temperature at each time point during the culture. In FIG. 3, a measured soot temperature (MeKT) curve is virtually represented.
A first high temperature boundary temperature (HT1) and a second high temperature boundary temperature (HT2) are set in advance on the high temperature side with respect to the set soot temperature (SeKT). The temperature range from the set soot temperature (SeKT) to the first high temperature boundary temperature (HT1) is the first high temperature region, the temperature from the first high temperature boundary temperature (HT1) to the second high temperature boundary temperature (HT2). The region is the second high temperature region, and the temperature region exceeding the second high temperature boundary temperature (HT2) is the third high temperature region.
On the other hand, the first low temperature boundary temperature (LT1) and the second low temperature boundary temperature (LT2) are preset on the low temperature side with respect to the set soot temperature (SeKT). The temperature range from the set soot temperature (SeKT) to the first low temperature boundary temperature (LT1) is defined as the first low temperature range, and the temperature range from the first low temperature boundary temperature (LT1) to the second low temperature boundary temperature (LT2) is defined. A temperature region below the second low temperature region and the second low temperature boundary temperature (LT2) is defined as a third low temperature region.

In the present embodiment, the standard air volume (SWQ) is configured as a base air volume (BWQ), an intermediate air volume (MdWQ), and a maximum air volume (MxWQ).
When the measured soot temperature (MeKT) is in the region below the set soot temperature (SeKT), that is, including the set soot temperature (SeKT) and in the first low temperature region, the second low temperature region, and the third low temperature region, The predetermined base airflow rate (BWQ) is set as the standard airflow rate (SWQ).
When the measured soot temperature (MeKT) is in the first high temperature region, the intermediate air flow rate (MdWQ) based on general proportional control (PID control) is set as the standard air flow rate (SWQ).
In addition, when the measured soot temperature (MeKT) is equal to or higher than the second high temperature region, the predetermined maximum blowing amount (MxWQ) is set as the standard blowing amount (SWQ).

The air flow rate correction coefficient (WQF) is calculated by applying the temperature gradient difference (ΔG) to the experimental equation (Equation 2) in which the temperature gradient difference (ΔG) is stored in advance at each time point during sputum culture.
WQF = ΔG (° C./min)×10 (min / ° C.) + 1 ··· Formula 2
here,
WQF: Airflow correction coefficient ΔG (° C / min): Temperature gradient difference

The actual air flow rate (RWQ) is calculated as the following Expression 3 by multiplying the calculated air flow rate correction coefficient (WQF) and the standard air flow rate (SWQ).
RWQ = WQF × SWQ ... Formula 3
here,
RWQ: Actual air flow rate WQF: Air flow rate correction coefficient SWQ: Standard air flow rate (basic air flow rate (BWQ), intermediate air flow rate (MdWQ), maximum air flow rate (MxWQ)

Now, for example, when the temperature gradient difference (ΔG) is 0.05 (° C./min) at a certain point in time during the culture, the blowing rate correction coefficient WQF is 1.5. Accordingly, the actual blown amount (RWQ) is 1.5 times the standard blown amount (SWQ). Further, when the temperature gradient difference (ΔG) is −0.05 (° C./min), the air flow rate correction coefficient WQF is 0.5. Accordingly, the actual blown amount (RWQ) is 0.5 times the standard blown amount (SWQ).
The controller 30 controls the blowing unit 20 so that the calculated actual blowing amount (RWQ) is obtained at each time point during the culture.

  The empirical formula (Formula 2) for calculating the air flow rate correction coefficient (WQF) is the temperature gradient difference (ΔG) and necessary and appropriate air flow rate correction (air flow rate correction for approaching the set soot temperature). With respect to the above, it is possible to know an appropriate one through experiments conducted in advance. Of course, the empirical formula (Formula 2) is not limited to the formula described above, and can be replaced if another empirical formula that can obtain a more appropriate air flow correction factor (WQF) can be obtained.

On the other hand, the standard ventilation temperature (SWT), which is a standard for calculating the actual ventilation temperature (RWT), corresponds to the temperature difference (ΔT) between the measured soot temperature (MeKT) and the set soot temperature (SeKT), A predetermined one is stored in the storage unit of the air conditioning controller 30.
When the measured soot temperature (MeKT) is obtained, the difference (ΔT) between the measured soot temperature (MeKT) and the set soot temperature (SeKT) is calculated, and the standard ventilation temperature ((T) corresponding to the difference (ΔT) is calculated. SWT) is selected from the stored values and determined.
In the present embodiment, the standard blast temperature (SWT) is expressed by the following equation 4 by the set sputum temperature (SeKT) and the standard corrected temperature value (SMT) at each time point during sputum culture. Here, the standard correction temperature value (SMT) is preset according to the difference between the measured soot temperature (MeKT) and the set soot temperature (SeKT), and is stored in the air conditioning controller 30.
SWT = SeKT + SMT (4)
here,
SWT: Standard ventilation temperature SeKT: Set temperature at the time of soot temperature measurement SMT: Standard correction temperature value at the time of soot temperature measurement

In the present embodiment, the standard corrected temperature value (SMT) refers to a set temperature (SeKT) and a first temperature region within a certain range above and below, ie, the first high temperature region and the first low temperature, with reference to FIG. In the first temperature region composed of regions, the value is 0.
The standard corrected temperature value (SMT) is a value obtained by subtracting the measured soot temperature (MeKT) from the boundary temperature with the first temperature region in the second temperature region outside the first temperature region. That is,
In the second high temperature region,
Standard correction temperature value (SMT) = first high temperature boundary temperature (HT1) −measured soot temperature (MeKT)
In the second low temperature region,
Standard correction temperature value (SMT) = first low temperature boundary temperature (LT1) −measured soot temperature (MeKT)
The standard corrected temperature value (SMT) is a boundary between the second temperature region and the third temperature region from the boundary temperature between the first temperature region and the second temperature region in the third temperature region outside the second temperature region. The value is obtained by subtracting the temperature. That is,
In the third high temperature region,
Standard corrected temperature value (SMT) = first high temperature boundary temperature (HT1) −second high temperature boundary temperature (HT2)
In the third low temperature region,
Standard corrected temperature value (SMT) = first low temperature boundary temperature (LT1) −second high temperature boundary temperature (LT2)

  As can be seen from the above, since the standard correction temperature value (SMT) is 0 in the first high temperature region and the first low temperature region, the standard blowing temperature (SWT) is the set soot temperature (SeKT). In the second high temperature region and the third high temperature region, the standard correction temperature value (SMT) is a negative value. Therefore, the standard ventilation temperature (SWT) is lower than the set soot temperature (SeKT). In the second low temperature region and the third low temperature region, the standard correction temperature value (SMT) is a positive value. Therefore, the standard ventilation temperature (SWT) is higher than the set soot temperature (SeKT).

The first temperature region composed of the first high temperature region and the first low temperature region is set as a region where the soot temperature is close to the set soot temperature (SeKT) and does not need to be adjusted by the blowing temperature. The range of the first temperature region, that is, the value of the first high temperature boundary temperature (HT1) and the value of the first low temperature boundary temperature (LT1) are determined based on experiments and the like in advance.
However, since the first high temperature region is slightly higher than the set soot temperature (SeKT), the soot temperature is gently adjusted to the set soot temperature (SeKT) by adjusting the increase in the air flow rate by the intermediate air flow rate (MdWQ) by PID control. I will adjust it.
On the other hand, the blast volume is the base blast volume (BWQ) in the first low temperature region. In areas where the soot temperature is less than or equal to the set soot temperature (SeKT), including the second and third low temperature areas, there is no need to increase the air flow rate and lower the soot temperature. Although soaking is minimized, it is preferable that the temperature rise due to fermentation of koji. The basal ventilation rate (BWQ) is determined based on experiments in advance according to the size of the culture chamber, the scale of the anther culture layer, and the like.
The second temperature region composed of the second high temperature region and the second low temperature region is set as a temperature region in which it is difficult to adjust the soot temperature only by adjusting the air flow rate. The second temperature region, that is, the second high temperature boundary temperature (HT2) and the second low temperature boundary temperature (LT2) are also determined based on experiments and the like in advance.
In this second temperature region, the measured soot temperature (MeKT) and the first high temperature boundary temperature (HT1), or the difference between the measured soot temperature (MeKT) and the first low temperature boundary temperature (LT1) is the standard corrected temperature value (SMT). As described above, gentle sputum temperature adjustment is performed by adjusting the blast temperature while preventing adverse effects on sputum culture due to large temperature corrections.
A third temperature region comprising the third high temperature region and the third low temperature region is a temperature region that deteriorates the quality of the soot. Therefore, it is preferable to correct the soot temperature adjustment as quickly as possible. However, because the deviation from the set soot temperature (SeKT) is large, it is not preferable to increase / decrease the air blowing temperature abruptly because the adverse effect on soot growth is great. Therefore, in the third temperature range, even if the measured soot temperature (MeKT) is far away from the second temperature range, the standard correction is performed with a temperature difference corresponding to the width of the second temperature range. The temperature value (SMT) is used. This restricts excessive changes in the blast temperature, and promptly adjusts the air-conditioning while avoiding adverse effects on cocoon growing. The third temperature range is automatically determined when the second temperature range, that is, the second high temperature boundary temperature (HT2) and the second low temperature boundary temperature (LT2) are determined.
If the soot temperature rises above the second high temperature region, the maximum air flow rate (MxWQ) is used to quickly dissipate the heat accumulated around the soot deposition layer. I try to prevent things like being killed. The maximum blast volume (MxWQ) is also determined in advance based on experiments or the like according to the size of the culture chamber (steaming chamber 10), the scale of the koji culture layer, and the like.

  The air-conditioning controller 30 applies the calculated temperature gradient difference (ΔG) to an empirical formula (formula 5) that is stored in advance, and calculates a blowing temperature correction coefficient (WTF) at each time point of sputum culture. Then, the actual correction temperature value (RMT) is calculated from the blowing temperature correction coefficient (WTF) and the standard correction temperature value (SMT). Further, by adding this actual corrected temperature value (RMT) to the set soot temperature (SeKT), the actual ventilation temperature (RWT) at each time point of sputum culture is calculated and determined.

The blast temperature correction coefficient (WTF) is calculated by applying to the experimental equation (Equation 5) in which the temperature gradient difference (ΔG) is stored in advance at each time point during sputum culture.
WTF = ΔG (° C./min)×50 (min / ° C.)... Formula 5
here,
WTF: ventilation temperature correction coefficient ΔG (° C./min): temperature gradient difference

The actual corrected temperature value (RMT) is calculated as the following Expression 6 by multiplying the calculated blowing temperature correction coefficient (WTF) and the standard corrected temperature value (SMT).
RMT = WTF × SMT...
here,
RMT: Actual correction temperature value WTF: Blowing temperature correction coefficient SMT: Standard correction temperature value

The actual ventilation temperature (RWT) is calculated by the following equation (7).
RWT = SeKT + RMT (7)
here,
RWT: Actual ventilation temperature SeKT: Set soot temperature RMT: Actual correction temperature value

  The empirical formula (Formula 5) is appropriately obtained by conducting an experiment in advance with respect to the temperature gradient difference (ΔG) and the accompanying air temperature correction. Of course, the empirical formula (Formula 5) is not limited to the formula described above, and if an formula that can be corrected more appropriately is known, it can be adopted.

  As described above, when the actual ventilation temperature (RWT) is obtained at each time point during the cultivation of the anther, the controller 30 controls the actual ventilation volume (RWQ) and controls the actual ventilation volume (RWQ) so that the ventilation temperature becomes the actual ventilation temperature (RWT). The means 20 is controlled.

With reference to the flowchart of FIG. 4, the ventilation control by the air-conditioning controller 30 which is an air-conditioning control means is demonstrated.
When the cultivation of the koji is started, the air conditioning controller 30 detects the temperature information every time a predetermined time elapses from the temperature sensors (16, 17, 25, 26) arranged in each part of the koji making apparatus (Yes in step S1). Is input (step S2). Then, the measurement soot temperature (MeKT) and the set soot temperature (SeKT) at that time are determined (step S3).
Next, the air-conditioning controller 30 calculates the temperature difference (ΔT) between the measured soot temperature (MeKT) and the set soot temperature (SeKT) at that time (step S4), and thereby the corresponding standard air flow rate (SWQ) and The standard correction temperature value (SMT) is adopted from the storage unit and determined (steps S5 and S6).
Further, the air conditioning controller 30 calculates the temperature gradient difference (ΔG) between the temperature gradient (MeKG) of the measured soot temperature (MeKT) and the temperature gradient (SeKG) of the set soot temperature (SeKT) at that time (step S7). Then, the air flow rate correction coefficient (WQF) is calculated using the temperature gradient difference (ΔG) and the empirical formulas (Formula 2 and Formula 5) (Step S8), and the air flow temperature correction coefficient (WTF) is calculated (Step S9).
Further, the air-conditioning controller 30 calculates the actual air flow rate (RWQ) from the standard air flow rate (SWQ) using the obtained air flow rate correction coefficient (WQF) (step S10).
In addition, the air conditioning controller 30 calculates an actual correction temperature value (RMT) from the standard correction temperature value (SMT) using the obtained blowing temperature correction coefficient (WTF) (step S11), and further calculates the actual correction temperature value ( The actual ventilation temperature (RWT) is calculated from the RMT) and the set soot temperature (SeKT) (step S12).
When the actual air flow (RWQ) and the actual air temperature (RWT) are obtained as described above, the air-conditioning controller and the roller 30 provide the air blowing means 20 with the actual air flow (RWQ) and the actual air temperature (RWT). Output a control command.

  The above experimental formula 2 and experimental formula 5 may be determined for each culture stage (ST1 to ST5) with time of the set temperature (SeKT) curve shown in FIG. 2 or for each further subdivided culture stage. . By using an appropriate empirical formula for each culture stage, it is possible to obtain an appropriate air flow rate correction coefficient (WQF) and a feed temperature correction factor (WTF) for each culture stage, and based on this, the actual air flow rate And the actual air temperature can be obtained, and appropriate air conditioning control can be performed for each culture stage.

The empirical formula for each culture stage can be obtained by obtaining a region coefficient (STF) for each culture stage and correcting the experimental formula 2 and the experimental formula 5 using the region coefficient (STF).
The area coefficient (STF) can be an experimental value or an experimental value.
For example, when the area coefficient (STF) of a certain culture stage is obtained as STFx, the air flow rate correction coefficient (WQFx) in that culture stage can be obtained by the following equation 2-1.
WQFx = ΔG (° C./min)×10 (min / ° C.) × STFx + 1.
here,
WQFx: Air flow rate correction coefficient at a certain culture stage ΔG (° C./min): Temperature gradient difference STFx: Area coefficient at a certain culture stage Further, the air temperature correction coefficient (WTFx) can be obtained by the following equation 5-1.
WTFx = ΔG (° C./min)×50 (min / ° C.) × STFx... Formula 5-1
here,
WTF: Blowing temperature correction coefficient at a certain culture stage ΔG (° C./min): Temperature gradient difference STFx: Area coefficient at a certain culture stage

The region coefficient (STF) is set as a value between 0.01 and 2. However, the range may vary depending on the type of sputum and other sputum culture conditions.
By setting the region coefficient (STF) in advance for each region, the temperature difference (ΔG) and the region coefficient (STF) are applied to this using the common empirical formula (Formula 2) (Formula 5). Thus, it is possible to easily and simply calculate and obtain the air flow rate correction coefficient (WQF) and air temperature correction coefficient (WTF) for each culture stage, and air flow control for each culture region can be easily and easily performed. .

  INDUSTRIAL APPLICABILITY The present invention can be industrially used in the field of food production using rice cake as a steelmaking device that performs air conditioning control using a temperature gradient difference.

DESCRIPTION OF SYMBOLS 10 Straw making room 11 Culture bed 12 Conveyor 13 Stirrer 14 Blower port 15 Exhaust port 16 Trap temperature sensor 17 Blower temperature sensor 20 Blower means 21 Duct 22 Damper 23 Blower fan 24 Temperature control part 25 Exhaust temperature sensor 26 Outside temperature sensor 30 Air conditioning controller

Claims (7)

  The air-conditioning control means includes one or a plurality of culture beds in the iron making chamber and air blowing means for blowing air to the iron making room, and an air conditioning control means for controlling at least the amount of air blown by the air blowing means and the air blowing temperature. The temperature change over time of the koji cultured in the culture bed is set in advance and stored as a set koji temperature curve. From the measured koji temperature measured over time and the set koji temperature curve, At each point in time, adopting the standard air flow rate and the standard air temperature corresponding to the temperature difference between the two and calculating the temperature gradient difference between the temperature gradient of the measurement 麹 temperature and the temperature gradient of the set 麹 temperature curve, And the structure which determines the actual ventilation volume and actual ventilation temperature in each time in culture | cultivation by adding fixed correction to either one or both of the said standard ventilation volume and standard ventilation temperature based on this temperature gradient difference, respectively As Koji device which performs air conditioning control using a temperature gradient difference characterized and.   The air conditioning control means cultivates the air flow rate correction coefficient by applying the temperature gradient difference to the empirical formula using the empirical formula obtained and memorized in advance through experiments on the temperature gradient difference and the accompanying air flow rate correction. 2. The temperature gradient difference according to claim 1, wherein the actual air flow rate is determined by calculating at each time point inside and multiplying the obtained air flow rate correction coefficient by the standard air flow rate at that time point. A steelmaking device that uses air conditioning control.   The determination of the standard air flow rate by the air conditioning control means is configured to be determined for each measurement soot temperature corresponding to the temperature difference between the soot temperature and the set soot temperature. A steelmaking device that controls air conditioning using temperature gradient differences.   The standard air flow rate is the preset base air flow rate when the measured soot temperature is in the temperature range below the set soot temperature, and when the measured soot temperature is above the second high temperature region that is a certain temperature higher than the set soot temperature. The iron making apparatus that performs air conditioning control using the temperature gradient difference according to claim 3, wherein the maximum air blowing amount is set in advance, and the intermediate air blowing amount by PID control is set in the first high temperature region between them.   The air conditioning control means stores a standard correction temperature value preset in accordance with the difference between the measured salmon temperature and the preset salmon temperature, and adds the standard correction temperature value to the preset salmon temperature, so that each time point during the culture is stored. The air conditioning control means uses the empirical formula obtained and memorized in advance for the temperature gradient difference and the accompanying blast temperature correction, and stored in the empirical formula. To calculate the actual correction temperature value by multiplying the standard correction temperature value at that point in time and calculate the actual correction temperature value. It is set as the structure which determines the actual ventilation temperature in each time in culture | cultivation by adding a value to the said setting temperature, Air-conditioning control is performed using the temperature gradient difference in any one of Claims 1-4 characterized by the above-mentioned. The iron making device to perform.   The standard correction temperature value is set to 0 in the set temperature and the first temperature range within a certain range above and below the set temperature, and in the second temperature range outside the first temperature range, the measured temperature is measured from the boundary temperature with the first temperature range. In the third temperature region outside the second temperature region, the boundary temperature between the second temperature region and the third temperature region is subtracted from the boundary temperature between the first temperature region and the second temperature region. The iron making apparatus that performs air-conditioning control using the temperature gradient difference according to claim 5.   The blast volume correction coefficient and the blast temperature correction coefficient are configured to be calculated for each culturing stage of the cocoon by applying the temperature gradient difference to the experimental formula for each culturing stage of the cocoon over time. The iron making apparatus which performs air-conditioning control using the temperature gradient difference in any one of Claims 2-6.

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