JPH0678A - Humidification of solid culture apparatus with air-conditioner - Google Patents

Abstract

PURPOSE:To solve the problems of the liability to the supermoisturization of air supplied to a substrate to cause the degradation of quality of a readily water-absorbing substrate by the partial over-damping of the substrate in a conventional humidification process by an air-conditioning apparatus of a solid culture apparatus. CONSTITUTION:Temperature and humidity of an air flow supplied to a main body of a solid culture apparatus are measured at the upstream side of a humidifier and the temperature of the air is measured at the downstream side of the humidifier. The amount of water to be supplied to get a prescribed humidity is calculated from the measured temperature and humidity data and the calculated amount of water is supplied from the humidifier.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a brewing industry such as soy sauce production,
Alternatively, the present invention relates to a humidification method for keeping the humidity of the air to be blown high in an air conditioner of a solid culture device in the enzyme manufacturing industry or the like without making it supersaturated.

[0002]

2. Description of the Related Art Conventionally, 10 is used for solid culture such as soy sauce koji and koji malt.
Since the air having a humidity close to 0% saturation is required, the humidifying water was sprayed in an excessive amount so that the relative humidity of the blown air was 100% or more. Also, an example of installing a humidity sensor downstream of the humidifier to adjust the humidity is Jikho Sho 60-18075.
Found in the issue. However, humidity near saturation (around 100% RH)
Was difficult to control because it could not be measured with high sensitivity.

[0003]

In these conventional methods, the humidity of the air blown to the substrate is apt to be oversaturated, and in the substrate which easily absorbs water, the water content is partially excessive and the quality is deteriorated. Usually, the substrate is deposited on the perforated plate and air is blown from below, but in this case, the portion in contact with the perforated plate has excessive water content, and the quality is deteriorated and various bacteria are partially generated. RH
If the humidity can be adjusted to 92% to less than RH100%, such a defect will be solved.

[0004]

Therefore, in the present invention, the temperature and humidity are measured on the upstream side of the humidifying device and the temperature is measured on the downstream side of the humidifying device with respect to the flow of air supplied to the main body of the solid culture device. The amount of humidifying water for obtaining a predetermined humidity was calculated from the measured data, and a predetermined amount of water was supplied from the humidifying device.

The humidifying method of the present invention may use an ultrasonic humidifier, a two-fluid nozzle that simultaneously sprays air and water, or spray water with a high-pressure pump. The amount of water may be adjusted by any of a method of proportionally controlling the capacity of the metering pump and a method of changing the number of humidifying nozzles.

[0006]

[Operation] The air emitted from the culture device is almost 100% RH.
However, if outside air is introduced to adjust the temperature, or if it is heated by passing through a blower, the RH will drop. Therefore, the temperature before humidification
Humidity can be accurately measured, then the humidity after humidification can be predicted by computer control only by measuring the temperature after humidification, and if the humidifier is adjusted by moving the metering pump etc. based on the predicted value, the humidity can be easily adjusted to the specified humidity. Can be held at

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present method will be described in detail below with reference to FIG. 1 as an example of an apparatus used in the present method. Intake damper from the signal of the temperature sensor 3 set in the blowing duct as usual
10, the intermediate damper 11, the exhaust damper 12, the cooling device 13, and the heating device 14 are controlled to adjust the air to be blown to a predetermined temperature. To input the signals of the temperature sensor 1, the humidity sensor 2 and the temperature sensor 3 provided on the upstream side of the humidifying nozzle 6 installed as a humidifying device to the humidifying water amount setting device 4 to set a predetermined humidity according to the air diagram. Calculate the amount of humidifying water. The result is continuously transmitted as an output signal to the metering pump 5, and a predetermined amount of water is sprayed from the humidification nozzle 6 in the air conditioner 7.

A specific embodiment is as follows. Substrate
As 15, steaming and steaming 1,000 kg of fusuma as usual
Each treatment of cooling and seeding was performed, and the treatment was deposited on the perforated plate 16 in the main body 8 of the solid culture device, and air was blown from below to grow the microorganisms to produce the enzyme. The air flow rate was 100 m ³ / min, and the air flow temperature was adjusted by controlling the intake damper 10, the intermediate damper 11, the exhaust damper 12, the cooling device 13, and the heating device 14 in the usual manner.

The amount of humidifying water was controlled by the humidifying method of the present invention. That is, as an example, when the temperature on the upstream side of the humidifying nozzle 6 is 30 ° C., the relative humidity is 73%, and the temperature on the downstream side is 26 ° C., the relative humidity of the air to be blown is set to 99%, When the humidifying water amount setting device 14 calculates based on the air diagram, it suffices to spray 13.4 Kg / hr of water, and the metering pump 5 was controlled accordingly.

The culture was continued for about 70 hours, during which the substrate was stirred several times. The substrate immediately above the perforated plate 16 was sampled immediately before stirring, but the water content was not excessive. Moreover, the measurement of the relative humidity on the upstream side of the humidification nozzle was easy because it was not high humidity. As a result, the target enzyme could be produced in good yield.

[0011]

According to the present method, since the humidity of the air to be blown is not oversaturated, the substrate is not partially overwhelmed and the amount of dew condensation on the inner wall surface of the solid culture device and the perforated plate is reduced. The number of bacteria is reduced and the quality is improved. Also,
Efficient humidification management reduced the amount of spray water and reduced the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an example of an apparatus used in this method.

[Explanation of symbols]

 1 Temperature sensor 2 Humidity sensor 3 Temperature sensor 4 Humidification water amount setting device 5 Metering pump 6 Humidification nozzle 10 Intake damper 11 Intermediate damper 12 Exhaust damper 13 Cooling device 14 Heating device

Claims (1)

[Claims] 1. The temperature and humidity are measured on the upstream side of the humidifier and the temperature is measured on the downstream side of the humidifier with respect to the flow of air supplied to the main body of the solid culture device. A humidifying method in an air conditioner of a solid culture device, characterized in that a humidifying water amount for making humidity is calculated and a predetermined amount of water is supplied from the humidifying device.