JPS6115075A - Method and device for controlling drying of cereal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention, in ventilation drying of grains, sets the drying capacity of the air according to the amount of grains to be dried, the outside air temperature, and the outside air humidity, and adjusts the drying ability. The present invention relates to a grain drying control method and apparatus for controlling hot air temperature to maintain a temperature of 5.

BACKGROUND TECHNOLOGY Conventionally, grain drying methods and equipment include:
For example, as described on page 18 of the "Superring Dryer Instruction Manual" published by the applicant on March 17, 1970, )K, the hot air temperature is determined, and drying is controlled to maintain the hot air temperature throughout the entire drying process.

Problems to be Solved by the Invention By the way, drying of grains is greatly affected by the drying ability of the air, that is, the absolute humidity of the air. If this is determined, the drying capacity of the air may not be appropriate, resulting in cracking of the shell or deterioration of flavor due to overdrying, or the drying speed may not be appropriate, resulting in inconveniences such as inefficient drying. be.

Means for Solving the Problem Therefore, the present invention aims to eliminate the drawbacks of the conventional methods as described above. Calculate the required drying capacity from the capacity and the amount of grain to be dried, determine the temperature of drying hot air from the required drying capacity and outside air humidity, and adjust the amount of fuel t'l to maintain the determined hot air temperature. A grain drying control method characterized by controlling and drying grains.

And so.

In addition, an apparatus for carrying out the grain drying control method was constructed as follows.

A standard drying capacity setting circuit that sets the standard drying capacity from the standard amount of grain and outside temperature; a drying capacity calculation circuit that calculates the required drying capacity from the standard drying capacity and the amount of grain to be dried; and a drying capacity calculation circuit that calculates the required drying capacity from the standard drying capacity and the amount of grain to be dried. A grain drying control device comprising: a hot air temperature setting circuit that sets the temperature of dry hot air; and a combustion amount control circuit that controls a fuel pump of a hot air generator.

Made for The technical means described above work as follows.

The operation of the device will be explained below with reference to the drawings.

In the reference drying capacity setting circuit 1, the reference drying capacity is set based on the reference grain amount (for example, the grain It at full capacity) and the outside air temperature detected by the outside air temperature sensor 2. The drying capacity calculation circuit 3 receives the amount of grain to be dried detected by the ll9i# sensor 4 and a signal from the reference drying capacity setting circuit 1, calculates the required drying capacity, and the signal is sent to the heat X temperature setting circuit. Sent to 5. Then, in the hot air temperature setting circuit 5, the hot air temperature for the required drying capacity is calculated in response to the signal from the outside air humidity sensor 6, and the hot air temperature value is sensed by the hot air temperature sensor 9 and maintained. Next, the combustion amount control circuit 8 controls the fuel pump 10, and drying is continued.

Therefore, the grain is dried at the optimal drying capacity according to the amount of grain, outside temperature, and outside air humidity, so there is no chance of shell cracking or deterioration of flavor due to overdrying, and there is no delay in drying speed. The grains are dried efficiently.

Example An embodiment of the device according to the present invention will be described with reference to the drawings.

In the drawing, 1 is a standard drying capacity setting circuit, and 2 is an outside air temperature sensor. The drying capacity of the air (gr/kg
) is set. Reference numeral 3 denotes a drying capacity calculation circuit, and 4 a grain quantity sensor. Upon receiving the signal, the required drying capacity 1x (y/kg) is calculated using the following formula.

However, ΔXf: Standard drying capacity (''/kg) Q: Standard grain ik (kg) is set and maintained so that the grain is always dried in an appropriate dry state.Therefore, over-drying occurs. There is no delay in the drying speed, and the grains are kept in a good dry state and dried efficiently.

Effects of the Invention In short, since the present invention is configured as described above, grain is dried under the optimum drying capacity according to the amount of grain, outside air temperature, and outside air humidity, thereby preventing shell cracking and loss of flavor due to overdrying. The grains are effectively dried without causing deterioration or delay in drying speed.

[Brief explanation of drawings]

The drawing is a block diagram showing an embodiment of the device according to the present invention.

Claims (4)

[Claims] (1) Set the standard drying capacity from the standard grain amount and outside air temperature, calculate the required drying capacity from the standard drying ability and the amount of grain to be dried, and determine the temperature of drying hot air from the required drying ability and outside air humidity. and controlling the combustion amount of fuel so as to maintain the determined hot air temperature to dry the grain. (2) Claim 1, characterized in that the standard amount of grain is the amount of grain at full capacity, and the standard drying capacity to be set is the average value of the drying capacity at the beginning of drying and the drying capacity at the end of drying. Grain drying control method described. (3) A standard drying capacity setting circuit that sets the standard drying capacity from the standard amount of grain and outside temperature, a drying capacity calculation circuit that calculates the required drying capacity from the standard drying capacity and the amount of grain to be dried, and the required drying capacity. Grain comprising: a hot air temperature setting circuit that sets the temperature of the dry hot air based on outside air humidity; and a combustion amount control circuit that controls the fuel pump of the hot air generator to maintain the hot air temperature at the set value. Drying control device. (4) The grain drying control device according to claim 3, wherein the hot air temperature setting circuit stores matrix data of the hot air temperature calculated from the required drying capacity and the outside air humidity. .