JP7585766B2

JP7585766B2 - Grain Drying Equipment

Info

Publication number: JP7585766B2
Application number: JP2020212231A
Authority: JP
Inventors: 亮福本
Original assignee: Satake Corp
Current assignee: Satake Corp
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2024-11-19
Anticipated expiration: 2040-12-22
Also published as: JP2022098688A

Description

本発明は、貯留ビンやラック式乾燥機等の静置式の穀物乾燥装置に関し、カントリーエレベータやライスセンターの呼称で知られる穀物の共同乾燥施設で使用して好適な穀物乾燥装置に関する。 The present invention relates to stationary grain drying devices such as storage bins and rack-type dryers, and to grain drying devices suitable for use in shared grain drying facilities known as country elevators and rice centers.

従来、穀物乾燥装置として貯留ビンやラック式乾燥機等の静置式乾燥機は周知である（特許文献１，２を参照）。
貯留ビンの場合、荷受した穀物を前記貯留ビンに投入し、前記貯留ビンの床下から乾燥用空気を送風して前記穀物を乾燥させる。
また、ラック式乾燥機の場合、荷受した穀物をコンテナに投入し、ラックに収容された前記コンテナの下部から乾燥用空気を送風して穀物を乾燥させる。 2. Description of the Related Art Conventionally, stationary dryers such as storage bin and rack type dryers are well known as grain drying devices (see Patent Documents 1 and 2).
In the case of a storage bin, the received grain is placed into the storage bin and drying air is blown from under the floor of the storage bin to dry the grain.
In the case of a rack-type dryer, the received grain is placed in a container, and drying air is blown from the bottom of the container housed on a rack to dry the grain.

ところで、穀物の乾燥施設等では、穀物の収穫適期に荷受が集中し、その中でも天候が崩れるとの気象予報時や人手が確保しやすい週末に荷受予約が集中する。
そのため、前記静置式乾燥機において、荷受した穀物の乾燥を捌ききれず、荷受繁忙期に効率的に対応できない問題がある。 Meanwhile, at grain drying facilities and the like, cargo reservations are concentrated during the grain harvest season, and among these, reservations are concentrated when bad weather is forecast and on weekends when manpower is easily available.
As a result, the stationary dryer is unable to dry all the grains received, and is therefore unable to efficiently handle peak receiving periods.

特開２００３－１０２２５３号公報JP 2003-102253 A 特開２００２－３５００５１号公報JP 2002-350051 A

そこで、本発明は、荷受が多い場合に穀物の乾燥の促進を図ることができる穀物乾燥装置を提供することを目的とする。 Therefore, the present invention aims to provide a grain drying device that can promote drying of grains when there is a large amount of cargo.

上記目的を達成するため、本発明は、
穀物を乾燥処理する静置式の乾燥部と、前記乾燥部の乾燥運転を制御する制御部と、を備える穀物乾燥装置において、
前記制御部が、穀物の乾燥速度と品質保持のいずれかであって、荷受する穀物が多い場合に前記穀物の乾燥の促進を図るべく前記乾燥速度を優先して前記乾燥部の乾燥運転を制御する第１モード（乾燥優先モード）と、高温による穀物の品質劣化を防止すべく前記穀物の乾燥の促進よりも前記品質保持を優先して前記乾燥部の乾燥運転を制御する第２モード（品質優先モード）と、を手動で選択可能に備えることを特徴とする。
また、上記目的を達成するため、本発明は、
穀物を乾燥処理する静置式の乾燥部と、前記乾燥部の乾燥運転を制御する制御部と、を備える穀物乾燥装置において、
前記制御部が、穀物の乾燥速度と品質保持のいずれかであって、荷受する穀物が多い場合に前記穀物の乾燥の促進を図るべく前記乾燥速度を優先して前記乾燥部の乾燥運転を制御する第１モード（乾燥優先モード）と、高温による穀物の品質劣化を防止すべく前記穀物の乾燥の促進よりも前記品質保持を優先して前記乾燥部の乾燥運転を制御する第２モード（品質優先モード）と、を自動で選択可能に備えることを特徴とする。
In order to achieve the above object, the present invention provides
A grain drying apparatus including a stationary drying section that dries grains and a control section that controls a drying operation of the drying section,
The control unit is characterized by being manually selectable between a first mode (drying priority mode) in which the drying operation of the drying section is controlled by prioritizing the drying speed in order to promote drying of the grain when a large amount of grain is received , and a second mode (quality priority mode) in which the drying operation of the drying section is controlled by prioritizing the quality preservation over promoting drying of the grain in order to prevent deterioration of the quality of the grain due to high temperatures.
In order to achieve the above object, the present invention provides a method for producing a liquid crystal display comprising:
A grain drying apparatus including a stationary drying section that dries grains and a control section that controls a drying operation of the drying section,
The control unit is characterized by being able to automatically select between a first mode (drying priority mode) in which the drying operation of the drying section is controlled by prioritizing the drying speed in order to promote drying of the grain when a large amount of grain is received, and a second mode (quality priority mode) in which the drying operation of the drying section is controlled by prioritizing the quality preservation over promoting drying of the grain in order to prevent deterioration of the quality of the grain due to high temperatures.

本発明は、
前記乾燥部が、穀物が投入される貯留手段と、前記貯留手段に乾燥用空気を送風する送風手段と、外気を加温するバーナ手段と、を備え、
前記制御部が、
前記第１モードにおいて、前記乾燥用空気の目標湿度を予め設定し、前記外気の湿度が前記乾燥用空気の前記目標湿度よりも高い場合、前記目標湿度に基づいて前記バーナ手段により前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風手段により前記貯留手段に送風し、
前記第２モードにおいて、前記乾燥用空気の前記外気の温度からの目標上昇温度及び前記乾燥用空気の下限湿度を予め設定し、前記外気の湿度が前記乾燥用空気の前記下限湿度よりも高い場合、前記目標上昇温度に基づいて前記バーナ手段により前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風手段により前記貯留手段に送風する。
The present invention relates to
the drying section comprises a storage means into which grain is input, a blower means for blowing drying air to the storage means, and a burner means for heating outside air;
The control unit:
In the first mode, a target humidity of the drying air is set in advance, and when the humidity of the outside air is higher than the target humidity of the drying air, the outside air is heated by the burner means based on the target humidity, and the heated outside air is blown as the drying air to the storage means by the blower means;
In the second mode, a target rising temperature of the drying air from the temperature of the outside air and a lower limit humidity of the drying air are set in advance, and when the humidity of the outside air is higher than the lower limit humidity of the drying air, the outside air is heated by the burner means based on the target rising temperature, and the heated outside air is blown by the blowing means to the storage means as the drying air.

ここで、本発明において、「湿度」は「相対湿度」を意味する。 Here, in the present invention, "humidity" means "relative humidity."

本発明は、
前記静置式の乾燥部が貯留ビンであって、前記貯留ビンは、前記貯留手段として通風床の上に穀物が投入される貯留タンクを有し、前記送風手段と前記バーナ手段を付随して備え、前記送風手段により前記貯留タンクの下方から穀物に前記乾燥用空気を送風することが好ましい。 The present invention relates to
It is preferable that the stationary drying section is a storage bin, the storage bin having a storage tank into which grain is placed on a ventilation floor as the storage means, the storage bin being accompanied by the blowing means and the burner means, and the blowing means blowing the drying air onto the grain from below the storage tank.

本発明は、
前記静置式の乾燥部がラック式乾燥機であって、前記ラック式乾燥機は、前記貯留手段として金網等の通風中底の上に穀物が投入された状態でラックに収納されるコンテナを有し、前記送風手段と前記バーナ手段を付随して備え、前記送風手段により前記コンテナの下方から穀物に前記乾燥用空気を送風することが好ましい。 The present invention relates to
It is preferable that the stationary drying section is a rack-type dryer, the rack-type dryer having a container as the storage means, in which grains are placed on a ventilated bottom such as a wire mesh, stored on a rack, and the rack-type dryer is additionally provided with the blower means and the burner means, and the drying air is blown onto the grains from below the container by the blower means.

本発明は、
前記制御部が、
前記第１モードにおいて、前記外気の温度及び湿度と前記乾燥用空気の前記目標湿度に基づいて目標送風温度を算出し、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温し、
前記第２モードにおいて、前記外気の温度と前記乾燥用空気の前記目標上昇温度に基づいて目標送風温度を算出し、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the first mode, a target blowing temperature is calculated based on the temperature and humidity of the outside air and the target humidity of the drying air, and the outside air is heated by the burner means so that the temperature of the drying air becomes the target blowing temperature;
In the second mode, it is preferable to calculate a target blowing temperature based on the temperature of the outside air and the target rising temperature of the drying air, and to heat the outside air by the burner means so that the temperature of the drying air becomes the target blowing temperature.

本発明は、
前記制御部が、
前記第１モードにおいて、前記外気の温度及び湿度を定期的（例えば１分毎）に読み込むことで、前記外気の温度及び湿度の変化に対応して前記目標送風温度を定期的に算出することが好ましい。 The present invention relates to
The control unit:
In the first mode, it is preferable to periodically (e.g., every minute) read the temperature and humidity of the outside air, and periodically calculate the target air temperature in response to changes in the temperature and humidity of the outside air.

また、本発明は、
前記制御部が、
前記第２モードにおいて、前記外気の温度を定期的（例えば１分毎）に読み込むことで、前記外気の温度の変化に対応して前記目標送風温度を定期的に算出することが好ましい。 The present invention also provides a method for producing a method for manufacturing a semiconductor device comprising the steps of:
The control unit:
In the second mode, it is preferable to periodically (for example, every minute) read the outside air temperature and periodically calculate the target air temperature in response to changes in the outside air temperature.

本発明は、
前記制御部が、
前記第１モードにおいて、前記乾燥用空気の上限温度を予め設定し、前記目標送風温度が前記上限温度を超える場合には、前記乾燥用空気の温度が前記上限温度となるよう、前記上限温度を目標温度として前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the first mode, it is preferable to set an upper limit temperature of the drying air in advance, and when the target blowing temperature exceeds the upper limit temperature, the outside air is heated by the burner means with the upper limit temperature as a target temperature so that the temperature of the drying air becomes the upper limit temperature.

本発明は、
前記制御部が、
前記第１モードにおいて、前記乾燥用空気の下限温度を予め設定し、前記目標送風温度が前記下限温度を下回る場合には、前記乾燥用空気の温度が前記下限温度となるよう、前記下限温度を目標温度として前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the first mode, it is preferable to set a lower limit temperature of the drying air in advance, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means with the lower limit temperature as a target temperature so that the temperature of the drying air becomes the lower limit temperature.

本発明は、
前記制御部が、
前記第１モードにおいて、外気の温度の上昇等により前記外気の湿度が前記乾燥用空気の前記目標湿度を下回った場合、前記バーナ手段による前記外気の加温を一時的に停止することが好ましい。 The present invention relates to
The control unit:
In the first mode, when the humidity of the outside air falls below the target humidity of the drying air due to an increase in the temperature of the outside air or the like, it is preferable to temporarily stop heating the outside air by the burner means.

本発明は、
前記制御部が、
前記第２モードにおいて、前記乾燥用空気の湿度が前記下限湿度を下回った場合、前記乾燥用空気の温度がその時点の温度となるよう、即ち、前記乾燥用空気の湿度が前記下限湿度を下回った時点の温度を維持するよう、前記乾燥用空気の湿度が前記下限湿度を下回った時点の温度を目標温度として前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the second mode, when the humidity of the drying air falls below the lower limit humidity, it is preferable to heat the outside air by the burner means with the temperature of the drying air at that time as a target temperature, that is, to maintain the temperature of the drying air at the time when the humidity of the drying air fell below the lower limit humidity.

本発明は、
前記制御部が、
前記第２モードにおいて、前記乾燥用空気の湿度が前記下限湿度を超えた場合、再度、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the second mode, when the humidity of the drying air exceeds the lower limit humidity, it is preferable to heat the outside air by the burner means again so that the temperature of the drying air becomes the target blowing temperature.

本発明は、
前記制御部が、
前記バーナ手段の燃焼量（燃料消費量）が例えば２０％上昇した場合、前記乾燥用空気の湿度が前記下限湿度を超えたものと判断することが好ましい。 The present invention relates to
The control unit:
When the combustion amount (fuel consumption amount) of the burner means increases by, for example, 20%, it is preferable to determine that the humidity of the drying air has exceeded the lower limit humidity.

本発明は、
前記制御部が、
前記第２モードにおいて、前記乾燥用空気の下限温度を予め設定し、前記目標送風温度が前記下限温度を下回る場合には、前記乾燥用空気の温度が前記下限温度となるよう、前記下限温度を目標温度として前記バーナ手段により前記外気を加温することが好ましい。 The present invention relates to
The control unit:
In the second mode, it is preferable to set a lower limit temperature of the drying air in advance, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means with the lower limit temperature as a target temperature so that the temperature of the drying air becomes the lower limit temperature.

本発明は、
前記制御部が、
前記第２モードにおいて、前記外気の湿度が前記乾燥用空気の前記下限湿度を下回った場合、前記バーナ手段による前記外気の加温を一時的に停止することが好ましい。 The present invention relates to
The control unit:
In the second mode, when the humidity of the outside air falls below the lower limit humidity of the drying air, it is preferable to temporarily stop heating the outside air by the burner means.

本発明は、
前記制御部が、
荷受装置で荷受する穀物の荷受情報と、前記乾燥部で乾燥処理する穀物の乾燥処理情報に基づいて、前記第１モードと前記第２モードのいずれかを自動で選択し、前記乾燥部の乾燥運転を制御することが好ましい。 The present invention relates to
The control unit:
It is preferable to automatically select either the first mode or the second mode based on receiving information of the grain received by the receiving device and drying processing information of the grain to be dried in the drying section, and control the drying operation of the drying section.

本発明の穀物乾燥装置は、穀物を乾燥処理する静置式の乾燥部と、前記乾燥部の乾燥運転を制御する制御部と、を備える穀物乾燥装置において、前記制御部が、穀物の乾燥速度と品質保持のいずれかであって、荷受する穀物が多い場合に前記穀物の乾燥の促進を図るべく前記乾燥速度を優先して前記乾燥部の乾燥運転を制御する第１モード（乾燥優先モード）と、高温による穀物の品質劣化を防止すべく前記穀物の乾燥の促進よりも前記品質保持を優先して前記乾燥部の乾燥運転を制御する第２モード（品質優先モード）と、を手動で選択可能に備えるので、前記乾燥部での穀物の乾燥処理に際し、乾燥速度の優先と品質保持の優先を状況に応じて使い分けることができる。
したがって、本発明の穀物乾燥装置によれば、荷受が多い場合に乾燥速度を優先する第１モードを選択することで穀物の乾燥の促進を図ることができる。
また、本発明の穀物乾燥装置は、穀物を乾燥処理する静置式の乾燥部と、前記乾燥部の乾燥運転を制御する制御部と、を備える穀物乾燥装置において、前記制御部が、穀物の乾燥速度と品質保持のいずれかであって、荷受する穀物が多い場合に前記穀物の乾燥の促進を図るべく前記乾燥速度を優先して前記乾燥部の乾燥運転を制御する第１モード（乾燥優先モード）と、高温による穀物の品質劣化を防止すべく前記穀物の乾燥の促進よりも前記品質保持を優先して前記乾燥部の乾燥運転を制御する第２モード（品質優先モード）と、を自動で選択可能に備えるので、前記乾燥部での穀物の乾燥処理に際し、乾燥速度の優先と品質保持の優先を状況に応じて使い分けることができる。
したがって、本発明の穀物乾燥装置によれば、荷受が多い場合に乾燥速度を優先する第１モードを選択することで穀物の乾燥の促進を図ることができる。
The grain drying apparatus of the present invention is a grain drying apparatus comprising a stationary drying section which dries grains, and a control section which controls the drying operation of the drying section, and the control section is manually selectable between a first mode (drying priority mode) in which the drying operation of the drying section is controlled by prioritizing the drying speed in order to promote drying of the grain when a large amount of grain is received , and a second mode (quality priority mode) in which the drying operation of the drying section is controlled by prioritizing the quality preservation over promoting drying of the grain in order to prevent deterioration of the quality of the grain due to high temperatures , and therefore when drying grains in the drying section, the priority between the drying speed and the quality preservation can be used depending on the situation.
Therefore, according to the grain drying device of the present invention, when there is a large amount of cargo, the first mode, which prioritizes drying speed, can be selected, thereby accelerating the drying of grain.
In addition, the grain drying apparatus of the present invention is a grain drying apparatus comprising a stationary drying section that dries grains, and a control section that controls the drying operation of the drying section, and the control section is capable of automatically selecting between a first mode (drying priority mode) in which the drying operation of the drying section is controlled by prioritizing the drying speed in order to promote drying of the grain when a large amount of grain is received, and a second mode (quality priority mode) in which the drying operation of the drying section is controlled by prioritizing the quality preservation over promoting drying of the grain in order to prevent deterioration of the quality of the grain due to high temperatures, and therefore when drying grains in the drying section, the priority between drying speed and quality preservation can be used depending on the situation.
Therefore, according to the grain drying device of the present invention, when there is a large amount of cargo, the first mode, which prioritizes drying speed, can be selected, thereby accelerating the drying of grain.

本発明の穀物乾燥装置は、前記乾燥部が、穀物が投入される貯留手段と、前記貯留手段に乾燥用空気を送風する送風手段と、外気を加温するバーナ手段と、を備え、前記制御部が、前記第１モードにおいて、前記乾燥用空気の目標湿度を予め設定し、前記外気の湿度が前記乾燥用空気の前記目標湿度よりも高い場合、前記目標湿度に基づいて前記バーナ手段により前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風手段により前記貯留手段に送風するので、穀物の過乾燥を防止し、前記穀物の品質を保持する一方で、加温した乾燥用空気の作用により穀物中の水分が表面に移動しやすくなり、かつ、加温により乾燥用空気の湿度が下がり空気中に取り込める水分量が増加するため、穀物の乾燥効率が向上する。
そして、本発明の穀物乾燥装置は、前記制御部が、前記第１モードにおいて、加温により乾燥用空気の湿度を制御するので、前記乾燥用空気として最適な乾き空気を送風することができるため、穀物の乾燥の促進を図ることができる。
In the grain drying apparatus of the present invention, the drying section comprises a storage means into which grain is input, a blower means for blowing drying air to the storage means, and a burner means for heating outside air, and in the first mode, the control section sets a target humidity for the drying air in advance, and when the humidity of the outside air is higher than the target humidity for the drying air, the burner means heats the outside air based on the target humidity and the heated outside air is blown into the storage means by the blower means as the drying air.This prevents over-drying of the grain and maintains the quality of the grain, while the action of the heated drying air makes it easier for moisture in the grain to move to the surface, and the humidity of the drying air decreases due to heating, increasing the amount of moisture that can be taken in the air, thereby improving the drying efficiency of the grain.
In the grain drying apparatus of the present invention, the control unit controls the humidity of the drying air by heating it in the first mode, so that optimally dry air can be blown as the drying air, thereby facilitating the drying of the grain.

また、本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、前記乾燥用空気の前記外気の温度からの目標上昇温度及び前記乾燥用空気の下限湿度を予め設定し、前記外気の湿度が前記乾燥用空気の前記下限湿度よりも高い場合、前記目標上昇温度に基づいて前記バーナ手段により前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風手段により前記貯留手段に送風するので、穀物の過乾燥を防止し、前記穀物の品質を保持する一方で、加温した乾燥用空気の作用により穀物中の水分が表面に移動しやすくなり、かつ、加温により乾燥用空気の湿度が下がり空気中に取り込める水分量が増加するため、穀物の乾燥効率が向上する。
そして、本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、加温による乾燥用空気の上昇温度を制御するので、穀物の歪みによる割れ等、高温による穀物の品質劣化を防止することができる。
In addition, in the grain drying apparatus of the present invention, in the second mode, the control unit presets a target rise temperature of the drying air from the temperature of the outside air and a lower limit humidity of the drying air, and when the humidity of the outside air is higher than the lower limit humidity of the drying air, the outside air is heated by the burner means based on the target rise temperature and the heated outside air is blown by the blower means as the drying air to the storage means.This prevents over-drying of the grain and maintains the quality of the grain, while the action of the heated drying air makes it easier for moisture in the grain to move to the surface, and the humidity of the drying air decreases due to heating, increasing the amount of moisture that can be taken in the air, thereby improving the drying efficiency of the grain.
In the grain drying apparatus of the present invention, the control unit controls the rising temperature of the drying air by heating in the second mode, thereby preventing deterioration of the quality of the grain due to high temperatures, such as cracking due to grain distortion.

本発明の穀物乾燥装置は、前記制御部が、前記第１モードにおいて、前記外気の温度及び湿度と前記乾燥用空気の前記目標湿度に基づいて目標送風温度を算出し、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温することとすれば、前記外気の温度及び湿度の変化に対応して前記乾燥用空気の温度（湿度）を適切に制御することができる。 In the grain drying device of the present invention, in the first mode, the control unit calculates a target airflow temperature based on the temperature and humidity of the outside air and the target humidity of the drying air, and heats the outside air using the burner means so that the temperature of the drying air becomes the target airflow temperature. In this way, the temperature (humidity) of the drying air can be appropriately controlled in response to changes in the temperature and humidity of the outside air.

また、本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、前記外気の温度と前記乾燥用空気の前記目標上昇温度に基づいて目標送風温度を算出し、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温することとすれば、前記外気の温度変化に対応して前記乾燥用空気の温度を適切に制御することができる。 In addition, in the grain drying device of the present invention, if the control unit calculates a target blowing temperature based on the temperature of the outside air and the target rising temperature of the drying air in the second mode, and heats the outside air using the burner means so that the temperature of the drying air becomes the target blowing temperature, the temperature of the drying air can be appropriately controlled in response to changes in the temperature of the outside air.

本発明の穀物乾燥装置は、前記制御部が、前記第１モードにおいて、前記乾燥用空気の上限温度を予め設定し、前記目標送風温度が前記上限温度を超える場合には、前記乾燥用空気の温度が前記上限温度となるよう、前記上限温度を目標温度として前記バーナ手段により前記外気を加温することとすれば、穀物の歪みによる割れ等、高温による穀物の品質劣化を防止することができる。 In the grain drying device of the present invention, in the first mode, the control unit pre-sets an upper limit temperature of the drying air, and when the target air temperature exceeds the upper limit temperature, the burner means heats the outside air with the upper limit temperature as a target temperature so that the temperature of the drying air becomes the upper limit temperature. This can prevent quality deterioration of grains due to high temperatures, such as cracking due to grain distortion.

本発明の穀物乾燥装置は、前記制御部が、前記第１モードにおいて、前記乾燥用空気の下限温度を予め設定し、前記目標送風温度が前記下限温度を下回る場合には、前記乾燥用空気の温度が前記下限温度となるよう、前記下限温度を目標温度として前記バーナ手段により前記外気を加温することとすれば、寒冷地において乾燥用空気の送風温度の低下を防止することができる。 In the grain drying device of the present invention, the control unit pre-sets a lower limit temperature of the drying air in the first mode, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means with the lower limit temperature as a target temperature so that the temperature of the drying air becomes the lower limit temperature, thereby preventing a drop in the blowing temperature of the drying air in cold regions.

本発明の穀物乾燥装置は、前記制御部が、前記第１モードにおいて、外気の温度の上昇等により前記外気の湿度が前記乾燥用空気の前記目標湿度を下回った場合、前記バーナ手段による前記外気の加温を一時的に停止することとすれば、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。 In the grain drying device of the present invention, when the humidity of the outside air falls below the target humidity of the drying air due to an increase in the temperature of the outside air or the like in the first mode, the control unit temporarily stops heating the outside air by the burner means, thereby preventing over-drying of the grain and maintaining the quality of the grain.

本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、前記乾燥用空気の湿度が前記下限湿度を下回った場合、前記乾燥用空気の温度がその時点の温度となるよう、即ち、前記乾燥用空気の湿度が前記下限湿度を下回った時点の温度を維持するよう、前記乾燥用空気の湿度が前記下限湿度を下回った時点の温度を目標温度として前記バーナ手段により前記外気を加温することとすれば、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。 In the grain drying device of the present invention, when the control unit is in the second mode and the humidity of the drying air falls below the lower limit humidity, the control unit heats the outside air using the burner means to a target temperature equal to the temperature at that time, i.e., to maintain the temperature at the time when the humidity of the drying air fell below the lower limit humidity, thereby preventing over-drying of the grain and maintaining the quality of the grain.

本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、前記乾燥用空気の湿度が前記下限湿度を超えた場合、再度、前記乾燥用空気の温度が前記目標送風温度となるよう前記バーナ手段により前記外気を加温することとすれば、穀物の乾燥時間を短縮することができる。 In the grain drying device of the present invention, when the humidity of the drying air exceeds the lower humidity limit in the second mode, the control unit heats the outside air again using the burner means so that the temperature of the drying air reaches the target blowing temperature, thereby shortening the grain drying time.

本発明の穀物乾燥装置は、前記制御部が、前記バーナ手段の燃焼量（燃料消費量）が所定割合（例えば２０％）上昇した場合、前記乾燥用空気の湿度が前記下限湿度を超えたものと判断することとすれば、前記乾燥用空気の送風温度及び送風湿度の乱高下を防止することができる。 The grain drying device of the present invention can prevent drastic fluctuations in the blowing temperature and blowing humidity of the drying air by determining that the humidity of the drying air has exceeded the lower limit humidity when the combustion amount (fuel consumption) of the burner means increases by a predetermined percentage (e.g., 20%).

本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、前記乾燥用空気の下限温度を予め設定し、前記目標送風温度が前記下限温度を下回る場合には、前記乾燥用空気の温度が前記下限温度となるよう、前記下限温度を目標温度として前記バーナ手段により前記外気を加温することとすれば、寒冷地において乾燥用空気の送風温度の低下を防止することができる。 In the grain drying device of the present invention, the control unit pre-sets a lower limit temperature of the drying air in the second mode, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means with the lower limit temperature as a target temperature so that the temperature of the drying air becomes the lower limit temperature. This makes it possible to prevent a drop in the blowing temperature of the drying air in cold regions.

本発明の穀物乾燥装置は、前記制御部が、前記第２モードにおいて、外気の温度の上昇等により前記外気の湿度が前記乾燥用空気の前記下限湿度を下回った場合、前記バーナ手段による前記外気の加温を一時的に停止することとすれば、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。 In the grain drying device of the present invention, when the humidity of the outside air falls below the lower humidity limit of the drying air due to an increase in the temperature of the outside air or the like in the second mode, the control unit temporarily stops heating the outside air by the burner means, thereby preventing over-drying of the grain and maintaining the quality of the grain.

本発明の穀物乾燥装置は、前記制御部が、荷受装置で荷受する穀物の荷受情報と、前記乾燥部で乾燥処理する穀物の乾燥処理情報に基づいて、前記第１モードと前記第２モードのいずれかを自動で選択し、前記乾燥部の乾燥運転を制御することとすれば、施設の運営状況に合わせて乾燥部の乾燥運転を自動制御することができる。 The grain drying device of the present invention can automatically control the drying operation of the drying section according to the operating conditions of the facility by controlling the control unit to automatically select either the first mode or the second mode based on the receiving information of the grain received by the receiving device and the drying processing information of the grain to be dried in the drying section and to control the drying operation of the drying section.

穀物乾燥装置の概略説明図である。FIG. 1 is a schematic explanatory diagram of a grain drying device. 乾燥優先モードにおけるバーナの燃焼制御フロー図（その１）である。FIG. 11 is a flow chart (part 1) of burner combustion control in the dryness priority mode. 乾燥優先モードにおけるバーナの燃焼制御フロー図（その２）である。FIG. 11 is a flow chart (part 2) of burner combustion control in the dryness priority mode. 品質優先モードにおけるバーナの燃焼制御フロー図（その１）である。FIG. 11 is a flow chart (part 1) of burner combustion control in the quality priority mode. 品質優先モードにおけるバーナの燃焼制御フロー図（その２）である。FIG. 11 is a burner combustion control flow diagram (part 2) in the quality priority mode.

本発明の実施の形態を図面に基づいて説明する。
図１は穀物乾燥装置の概略説明図を示す。
本発明の実施の形態における穀物乾燥装置は、穀物を静置状態で乾燥処理する静置式の乾燥装置であり、ここでは周知の貯留ビンを例とする。
前記貯留ビン１は、通風床１１の上に穀物が投入される貯留タンク１２、前記通風床１１の下に送風室１３を有する。
前記貯留ビン１の一側には、前記送風室１３から前記貯留タンク１２に乾燥用空気を送風する送風ファン２と、外気を加温するバーナ３が付設される。 An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic diagram of a grain drying apparatus.
The grain drying apparatus in the embodiment of the present invention is a stationary type drying apparatus that dries grain in a stationary state, and a well-known storage bin is used as an example here.
The storage bin 1 has a storage tank 12 in which grain is placed on a ventilation floor 11, and a ventilation chamber 13 below the ventilation floor 11.
A blower fan 2 for blowing drying air from the blower chamber 13 to the storage tank 12 and a burner 3 for heating outside air are provided on one side of the storage bin 1.

前記貯留ビン１において、前記送風ファン２により前記送風室１３に送風される乾燥用空気は、前記通風床１１を通過し、前記貯留タンク１２に貯留される穀物の間を通風して上部の開口から排風される。 In the storage bin 1, the drying air blown into the ventilation chamber 13 by the ventilation fan 2 passes through the ventilation floor 11, ventilates between the grains stored in the storage tank 12, and is exhausted from the opening at the top.

本発明の実施の形態において、前記貯留ビン１は、前記バーナ３の燃焼をＯＮ／ＯＦＦ（燃焼／停止）制御し、前記バーナ３を燃焼制御する制御装置４を備える。
前記制御装置４は、前記貯留タンク１２に投入される穀物の乾燥処理に際し、前記穀物の乾燥速度を優先して乾燥運転を制御する乾燥優先モードと、前記穀物の品質保持を優先して乾燥運転を制御する品質優先モードの２つの乾燥運転モードを選択可能に備える。 In an embodiment of the present invention, the storage bin 1 is provided with a control device 4 that controls the combustion of the burner 3 by controlling ON/OFF (combustion/stop) the combustion of the burner 3 .
The control device 4 has two selectable drying operation modes for drying the grain put into the storage tank 12: a drying priority mode in which the drying operation is controlled with priority given to the drying speed of the grain, and a quality priority mode in which the drying operation is controlled with priority given to preserving the quality of the grain.

前記制御装置４は、前記乾燥優先モードにおいて、予め設定される乾燥用空気の目標湿度に基づいて前記バーナ３を燃焼制御し、外気を加温することを基本とする。
また、前記制御装置４は、前記品質優先モードにおいて、予め設定される乾燥用空気の外気からの目標上昇温度に基づいて前記バーナ３を燃焼制御し、外気を加温することを基本とする。 In the dryness priority mode, the control device 4 basically controls the combustion of the burner 3 based on a preset target humidity of the drying air to heat the outside air.
In the quality priority mode, the control device 4 basically controls the combustion of the burner 3 based on a preset target temperature rise of the drying air from the outside air, thereby heating the outside air.

前記貯留ビン１は、前記制御装置４の操作パネル５を備え、前記操作パネル５には乾燥優先ボタン５１と品質優先ボタン５２が設けられ、作業員が前記操作パネル５を操作することにより前記乾燥優先モードと前記品質優先モードを選択することができる。 The storage bin 1 is equipped with an operation panel 5 of the control device 4, and the operation panel 5 is provided with a drying priority button 51 and a quality priority button 52, and an operator can select the drying priority mode or the quality priority mode by operating the operation panel 5.

図２及び図３は、乾燥優先モードにおけるバーナの燃焼制御フロー図を示す。
（１）ステップＳ１～Ｓ３：
作業員は、前記バーナ３の運転に先立ち、前記制御装置４に乾燥用空気の目標湿度、上限温度及び下限温度を入力設定する。
なお、本発明の実施の形態において、「湿度」は「相対湿度」を意味する。 2 and 3 show a burner combustion control flow diagram in the dryness priority mode.
(1) Steps S1 to S3:
Prior to operating the burner 3, an operator inputs and sets the target humidity, upper limit temperature, and lower limit temperature of the drying air into the control device 4.
In the embodiments of the present invention, "humidity" means "relative humidity".

（２）ステップＳ４～Ｓ９：
前記バーナ３の運転を開始するとともに、温度センサ及び湿度センサにより測定される外気の温度及び湿度を前記制御装置４に読み込み、前記外気の温度、前記外気の湿度、及び前記目標湿度から前記乾燥用空気の目標送風温度を算出する。 (2) Steps S4 to S9:
When the operation of the burner 3 is started, the temperature and humidity of the outside air measured by the temperature sensor and humidity sensor are read into the control device 4, and the target blowing temperature of the drying air is calculated from the outside air temperature, the outside air humidity, and the target humidity.

そして、前記外気の湿度が前記目標湿度よりも高い場合、前記送風ファン２により送風される前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する。 When the humidity of the outside air is higher than the target humidity, the burner 3 is controlled to heat the outside air so that the temperature of the drying air blown by the blower fan 2 becomes the target temperature.

ここでは、前記外気の温度及び湿度を前記制御装置４に定期的（例えば１分毎）に読み込み、前記外気の温度及び湿度の変化に対応して前記目標送風温度を定期的に算出することで、前記乾燥用空気の送風温度（湿度）を適切に制御することができる。 Here, the temperature and humidity of the outside air are read into the control device 4 periodically (e.g., every minute), and the target blowing temperature is periodically calculated in response to changes in the temperature and humidity of the outside air, thereby making it possible to appropriately control the blowing temperature (humidity) of the drying air.

ここで、前記目標送風温度は、前記外気の温度及び前記外気の湿度から前記外気の水蒸気圧（ｈＰａ）を求め、前記外気の水蒸気圧と前記目標湿度から加温後の飽和水蒸気圧（ｈＰａ）を求めることで算出することができる。 Here, the target air temperature can be calculated by determining the water vapor pressure (hPa) of the outside air from the temperature and humidity of the outside air, and determining the saturated water vapor pressure (hPa) after heating from the water vapor pressure of the outside air and the target humidity.

即ち、外気温度（℃）から外気の飽和水蒸気圧（ｈＰａ）、前記外気温度及び前記飽和水蒸気圧から飽和水蒸気量（ｇ／ｍ^３）、前記飽和水蒸気量及び外気湿度（相対湿度％）から容積絶対湿度（ｇ／ｍ^３）、前記容積絶対湿度と前記外気温度における空気密度（Ｋｇ／ｍ^３）から重量絶対湿度（Ｋｇ／Ｋｇ）を求め、前記重量絶対湿度から水蒸気圧（ｈＰａ）を求める。そして、前記水蒸気圧及び前記目標湿度から加温後の飽和水蒸気圧（ｈＰａ）を求め、前記加温後の飽和水蒸気圧から目標送風温度を求めることができる。 That is, the saturated water vapor pressure (hPa) of the outside air is calculated from the outside air temperature (°C), the saturated water vapor amount (g/ ^m3 ) is calculated from the outside air temperature and the saturated water vapor pressure, the volumetric absolute humidity (g/ ^m3 ) is calculated from the saturated water vapor amount and the outside air humidity (relative humidity %), and the weight absolute humidity (Kg/Kg) is calculated from the volumetric absolute humidity and the air density (Kg/ ^m3 ) at the outside air temperature, and the water vapor pressure (hPa) is calculated from the weight absolute humidity.The saturated water vapor pressure after heating (hPa) is then calculated from the water vapor pressure and the target humidity, and the target blowing temperature is calculated from the saturated water vapor pressure after heating.

例えば、外気温度２０℃、外気湿度６０％、目標湿度４０％と仮定した場合、前記外気の温度及び前記外気の湿度から前記外気の水蒸気圧は１３．８４ｈＰａと求まり、前記外気の水蒸気圧と前記目標湿度から加温後の飽和水蒸気圧は３４．６ｈＰａと求まるので、前記目標送風温度は２６．５℃と算出することができる。 For example, assuming an outside air temperature of 20°C, an outside air humidity of 60%, and a target humidity of 40%, the water vapor pressure of the outside air is calculated to be 13.84 hPa from the outside air temperature and humidity, and the saturated water vapor pressure after heating is calculated to be 34.6 hPa from the outside air water vapor pressure and the target humidity, so the target air temperature can be calculated to be 26.5°C.

（３）ステップＳ１０～Ｓ１２：
ステップＳ９において前記外気を加温中、前記目標送風温度が前記上限温度を所定時間（例えば３分）継続して超える場合には、前記上限温度を目標温度として前記バーナ３を燃焼制御し前記外気を加温する。これにより、穀物の歪みによる割れ等、高温による穀物の品質劣化を防止することができる。
そして、その後、前記目標送風温度が前記上限温度を所定時間（例えば３分）継続して下回った場合には、再び、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ９）。これにより、穀物の乾燥時間を短縮することができる。 (3) Steps S10 to S12:
In step S9, if the target blowing temperature exceeds the upper limit temperature continuously for a predetermined time (e.g., 3 minutes) while the outside air is being heated, the upper limit temperature is set as the target temperature, and the burner 3 is controlled to heat the outside air. This makes it possible to prevent quality deterioration of grains due to high temperatures, such as cracking due to grain distortion.
Then, if the target blowing temperature continues to be lower than the upper limit temperature for a predetermined time (e.g., 3 minutes), the burner 3 is again controlled to heat the outside air so that the blowing temperature of the drying air becomes the target blowing temperature (step S9). This makes it possible to shorten the drying time of the grains.

（４）ステップＳ１３～Ｓ１５：
ステップＳ９において前記外気を加温中、前記目標送風温度が前記下限温度を所定時間（例えば３分）継続して下回る場合には、前記下限温度を目標温度として前記バーナ３を燃焼制御し前記外気を加温する。これにより、寒冷地において乾燥用空気の送風温度の低下を防止することができる。
そして、その後、前記目標送風温度が前記下限温度を所定時間（例えば３分）継続して超えた場合には、再び、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ９）。 (4) Steps S13 to S15:
In step S9, if the target blowing temperature falls below the lower limit temperature for a predetermined time (e.g., 3 minutes) while the outside air is being heated, the burner 3 is controlled to heat the outside air by setting the lower limit temperature as the target temperature. This makes it possible to prevent a drop in the blowing temperature of the drying air in cold regions.
Then, if the target blowing temperature continues to exceed the lower limit temperature for a predetermined period of time (e.g., 3 minutes), the burner 3 is again controlled to heat the outside air so that the blowing temperature of the drying air becomes the target blowing temperature (step S9).

（５）ステップＳ１６～Ｓ１８：
ステップＳ９において前記外気を加温中、外気の温度の上昇等により前記外気の湿度が前記目標湿度を所定時間（例えば３分）継続して下回った場合、前記バーナ３の燃焼を一時的に停止する。これにより、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。
そして、その後、前記外気の湿度が前記目標湿度を所定時間（例えば３分）継続して超えた場合には、再び、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ９）。 (5) Steps S16 to S18:
In step S9, if the humidity of the outside air falls below the target humidity for a predetermined period of time (e.g., 3 minutes) continuously due to an increase in the temperature of the outside air while the outside air is being heated, the combustion of the burner 3 is temporarily stopped. This makes it possible to prevent the grain from being over-dried and maintain the quality of the grain.
Then, if the humidity of the outside air subsequently exceeds the target humidity for a predetermined period of time (e.g., 3 minutes) continuously, the burner 3 is combustion-controlled to heat the outside air again so that the blowing temperature of the drying air becomes the target blowing temperature (step S9).

（６）ステップＳ１９～Ｓ２１：
ステップＳ９において前記外気を加温中、作業員は、穀物水分や施設の運営状況等に鑑み、前記バーナ３の運転を任意のタイミングで停止することができる。 (6) Steps S19 to S21:
During heating of the outside air in step S9, an operator can stop the operation of the burner 3 at any timing in consideration of the grain moisture content, the facility operation status, and the like.

本発明の実施の形態における穀物乾燥装置（貯留ビン１）は、前記制御装置４が、前記乾燥優先モードにおいて、前記乾燥用空気の目標湿度を予め入力設定し、前記外気の温度、前記外気の湿度、及び前記目標湿度から前記乾燥用空気の目標送風温度を算出し、外気の湿度が前記目標湿度よりも高い場合、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風ファン２により前記送風室１３から前記貯留タンク１２に送風するので、穀物の過乾燥を防止し、前記穀物の品質を保持する一方で、加温した乾燥用空気の作用により穀物中の水分が表面に移動しやすくなり、かつ、加温により乾燥用空気の湿度が下がり空気中に取り込める水分量が増加するため、穀物の乾燥効率が向上する。
そして、本発明の実施の形態における穀物乾燥装置は、前記制御装置４が、前記乾燥優先モードにおいて、加温により乾燥用空気の湿度を制御するので、前記乾燥用空気として最適な乾き空気を送風することができるため、穀物の乾燥の促進を図ることができる。 In the grain drying apparatus (storage bin 1) according to the embodiment of the present invention, in the drying priority mode, the control device 4 inputs and sets a target humidity for the drying air in advance, calculates a target blowing temperature of the drying air from the outside air temperature, the outside air humidity, and the target humidity, and if the humidity of the outside air is higher than the target humidity, heats the outside air by controlling the combustion of the burner 3 so that the blowing temperature of the drying air becomes the target blowing temperature, and blows the heated outside air as the drying air from the blower chamber 13 to the storage tank 12 by the blower fan 2. This prevents over-drying of the grain and maintains the quality of the grain, while the action of the heated drying air makes it easier for moisture in the grain to move to the surface, and the humidity of the drying air decreases due to the heating, increasing the amount of moisture that can be taken in by the air, thereby improving the drying efficiency of the grain.
In the grain drying apparatus according to the embodiment of the present invention, the control device 4 controls the humidity of the drying air by heating it in the drying priority mode, so that optimally dry air can be blown out as the drying air, thereby facilitating the drying of the grain.

図４及び図５は、品質優先モードにおけるバーナの燃焼制御フロー図を示す。
（１）ステップＳ３１～Ｓ３３：
作業員は、前記バーナ３の運転に先立ち、前記制御装置４に乾燥用空気の外気の温度からの目標上昇温度、前記乾燥用空気の送風湿度の下限湿度、及び前記乾燥用空気の送風温度の下限温度を入力設定する。 4 and 5 show a burner combustion control flow diagram in the quality priority mode.
(1) Steps S31 to S33:
Prior to operating the burner 3, an operator inputs and sets into the control device 4 a target increase in temperature of the drying air from the outside air temperature, a lower limit humidity of the drying air, and a lower limit temperature of the drying air.

（２）ステップＳ３４～Ｓ３７：
前記バーナ３の運転を開始するとともに、温度センサ及び湿度センサにより測定される外気の温度及び湿度を前記制御装置４に読み込み、前記外気の温度及び前記目標上昇温度から前記乾燥用空気の目標送風温度を算出する。 (2) Steps S34 to S37:
When the operation of the burner 3 is started, the temperature and humidity of the outside air measured by the temperature sensor and humidity sensor are read into the control device 4, and the target blowing temperature of the drying air is calculated from the outside air temperature and the target rising temperature.

そして、前記外気の湿度が前記乾燥用空気の送風湿度の前記下限湿度よりも高い場合、前記送風ファン２により送風される前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する。 When the humidity of the outside air is higher than the lower limit humidity of the blowing humidity of the drying air, the burner 3 is controlled to heat the outside air so that the blowing temperature of the drying air blown by the blower fan 2 becomes the target blowing temperature.

なお、ここで、前記外気の温度及び湿度を前記制御装置４に定期的（例えば１分毎）に読み込み、前記外気の温度変化に対応して前記目標送風温度を定期的に算出することとすれば、前記乾燥用空気の送風温度を適切に制御することができる。 Here, if the temperature and humidity of the outside air are read into the control device 4 periodically (e.g., every minute) and the target blowing temperature is periodically calculated in response to changes in the temperature of the outside air, the blowing temperature of the drying air can be appropriately controlled.

（３）ステップＳ３８～Ｓ４０：
ステップＳ３７において前記外気を加温中、前記乾燥用空気の送風湿度が前記下限湿度を所定時間（例えば３分）継続して下回った場合には、前記乾燥用空気の送風温度がその時点の温度となるよう、即ち、前記乾燥用空気の送風湿度が前記下限湿度を下回った時点の温度を維持するよう前記バーナ３を燃焼制御し前記外気を加温する。これにより、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。
そして、その後、前記乾燥用空気の送風湿度が前記下限湿度を所定時間（例えば３分）超えた場合、再度、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ３７）。これにより、穀物の乾燥時間を短縮することができる。 (3) Steps S38 to S40:
In step S37, if the blowing humidity of the drying air falls below the lower limit humidity for a predetermined time (e.g., 3 minutes) while the outside air is being heated, the burner 3 is controlled in combustion to heat the outside air so that the blowing temperature of the drying air becomes the temperature at that time, that is, so that the temperature at the time when the blowing humidity of the drying air fell below the lower limit humidity is maintained. This makes it possible to prevent over-drying of the grains and maintain the quality of the grains.
Then, when the humidity of the drying air exceeds the lower limit humidity for a predetermined time (e.g., 3 minutes), the burner 3 is controlled to heat the outside air again so that the temperature of the drying air becomes the target temperature (step S37). This makes it possible to shorten the drying time of the grains.

ここで、ステップＳ４０では、前記バーナ３の燃焼量（燃料消費量）の上昇（例えば２０％上昇）が所定時間（例えば３分）継続した場合、前記乾燥用空気の送風湿度が前記下限湿度を超えたものと判断する。これにより、前記乾燥用空気の送風温度及び送風湿度の乱高下を防止することができる。 Here, in step S40, if the increase in the combustion amount (fuel consumption) of the burner 3 (e.g., a 20% increase) continues for a predetermined time (e.g., 3 minutes), it is determined that the blowing humidity of the drying air has exceeded the lower humidity limit. This makes it possible to prevent the blowing temperature and blowing humidity of the drying air from fluctuating wildly.

（４）ステップＳ４１～Ｓ４３：
ステップＳ３７において前記外気を加温中、前記目標送風温度が前記下限温度を所定時間（例えば３分）継続して下回る場合には、前記下限温度を目標温度として前記バーナ３を燃焼制御し前記外気を加温する。これにより、寒冷地において乾燥用空気の送風温度の低下を防止することができる。
そして、その後、前記目標送風温度が前記下限温度を所定時間（例えば３分）継続して超えた場合には、再び、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ３７）。 (4) Steps S41 to S43:
In step S37, if the target blowing temperature falls below the lower limit temperature for a predetermined time (e.g., 3 minutes) while the outside air is being heated, the burner 3 is controlled to heat the outside air by setting the lower limit temperature as the target temperature. This makes it possible to prevent a drop in the blowing temperature of the drying air in cold regions.
Then, if the target blowing temperature continues to exceed the lower limit temperature for a predetermined time (e.g., 3 minutes), the burner 3 is again controlled to heat the outside air so that the blowing temperature of the drying air becomes the target blowing temperature (step S37).

（５）ステップＳ４４～Ｓ４６：
ステップＳ３７において前記外気を加温中、外気の温度の上昇等により前記外気の湿度が前記乾燥用空気の送風湿度の前記下限湿度を所定時間（例えば３分）継続して下回った場合、前記バーナ３の燃焼を一時的に停止する。これにより、穀物の過乾燥を防止し、前記穀物の品質を保持することができる。
そして、その後、前記外気の湿度が前記乾燥用空気の送風湿度の前記下限湿度を所定時間（例えば３分）継続して超えた場合には、再び、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温する（ステップＳ３７）。 (5) Steps S44 to S46:
In step S37, if the humidity of the outside air falls below the lower limit humidity of the drying air supply humidity for a predetermined period of time (e.g., 3 minutes) continuously due to an increase in the temperature of the outside air while the outside air is being heated, the combustion of the burner 3 is temporarily stopped. This makes it possible to prevent the grains from being over-dried and maintain the quality of the grains.
Then, if the humidity of the outside air subsequently exceeds the lower limit humidity of the drying air blowing humidity for a predetermined period of time (e.g., 3 minutes) continuously, the burner 3 is combustion controlled to heat the outside air again so that the drying air blowing temperature becomes the target blowing temperature (step S37).

（６）ステップＳ４７～Ｓ４９：
ステップＳ３７において前記外気を加温中、作業員は、穀物水分や施設の運営状況等に鑑み、前記バーナ３の運転を任意のタイミングで停止することができる。 (6) Steps S47 to S49:
During the heating of the outside air in step S37, an operator can stop the operation of the burner 3 at any timing in consideration of the grain moisture content, the operating status of the facility, and the like.

本発明の実施の形態における穀物乾燥装置（貯留ビン１）は、前記制御装置４が、前記品質優先モードにおいて、前記乾燥用空気の前記外気の温度からの目標上昇温度及び前記乾燥用空気の送風湿度の下限湿度を予め入力設定し、前記外気の温度及び前記目標上昇温度湿度から前記乾燥用空気の目標送風温度を算出し、前記外気の湿度が前記乾燥用空気の送風湿度の前記下限湿度よりも高い場合、前記乾燥用空気の送風温度が前記目標送風温度となるよう前記バーナ３を燃焼制御して前記外気を加温し、前記加温した外気を前記乾燥用空気として前記送風ファン２により前記送風室１３から前記貯留タンク１２に送風するので、穀物の過乾燥を防止し、前記穀物の品質を保持する一方で、加温した乾燥用空気の作用により穀物中の水分が表面に移動しやすくなり、かつ、加温により乾燥用空気の湿度が下がり空気中に取り込める水分量が増加するため、穀物の乾燥効率が向上する。
そして、本発明の実施の形態における穀物乾燥装置は、前記制御装置４が、前記品質優先モードにおいて、加温による乾燥用空気の上昇温度を制御するので、穀物の歪みによる割れ等、高温による穀物の品質劣化を防止することができる。 In the grain drying apparatus (storage bin 1) according to the embodiment of the present invention, in the quality priority mode, the control device 4 inputs and sets in advance a target increase temperature of the drying air from the outside air temperature and a lower limit humidity of the blowing humidity of the drying air, calculates a target blowing temperature of the drying air from the outside air temperature and the target increase temperature and humidity, and when the humidity of the outside air is higher than the lower limit humidity of the blowing humidity of the drying air, heats the outside air by controlling the combustion of the burner 3 so that the blowing temperature of the drying air becomes the target blowing temperature, and blows the heated outside air as the drying air from the blower fan 2 from the blower chamber 13 to the storage tank 12. This prevents over-drying of the grain and maintains the quality of the grain, while the action of the heated drying air makes it easier for moisture in the grain to move to the surface, and the humidity of the drying air decreases due to the heating, increasing the amount of moisture that can be taken in by the air, thereby improving the drying efficiency of the grain.
In the grain drying apparatus according to the embodiment of the present invention, the control device 4 controls the rising temperature of the drying air due to heating in the quality priority mode, thereby preventing deterioration of the quality of the grain due to high temperatures, such as cracking due to grain distortion.

本発明の実施の形態における穀物乾燥装置は、前記バーナ３の燃焼をＯＮ／ＯＦＦ（燃焼／停止）制御する制御装置４を備え、前記制御装置４が、前記貯留タンク１２に投入される穀物の乾燥処理に際し、前記穀物の乾燥速度を優先して乾燥運転を制御する乾燥優先モードと、前記穀物の品質保持を優先して乾燥運転を制御する品質優先モードの２通りの乾燥運転モードを選択可能に備えるので、例えば、通常は品質優先モードを選択し、品質保持を優先して乾燥運転を制御する一方、荷受が多い場合は乾燥優先モードを選択し、乾燥速度を優先して乾燥運転を制御するなど、穀物の乾燥処理に際し、乾燥速度の優先と品質保持の優先を状況に応じて使い分けることができる。
したがって、本発明の実施の形態における穀物乾燥装置によれば、荷受が多い場合に乾燥速度を優先する乾燥優先モードを選択することで穀物の乾燥の促進を図ることができる。 The grain drying apparatus in an embodiment of the present invention is equipped with a control device 4 which controls the combustion of the burners 3 to be turned ON/OFF (combustion/stopped), and the control device 4 is capable of selecting between two drying operation modes when drying the grain input into the storage tank 12: a drying priority mode in which drying operation is controlled giving priority to the drying speed of the grain, and a quality priority mode in which drying operation is controlled giving priority to preserving the quality of the grain. Therefore, for example, the quality priority mode is normally selected to control the drying operation giving priority to quality preservation, whereas when there are many deliveries, the drying priority mode is selected to control the drying operation giving priority to the drying speed, and so on. In other words, when drying the grain, it is possible to use either the drying speed priority or the quality preservation priority depending on the situation.
Therefore, according to the grain drying device of the embodiment of the present invention, when there is a large amount of cargo, the drying of the grain can be promoted by selecting the drying priority mode, which prioritizes drying speed.

上記本発明の実施の形態において、前記制御装置４の前記２通りの乾燥運転モードは、作業員が前記操作パネル５を操作することにより手動で選択可能とするものであったが、荷受装置で荷受する穀物の今後の荷受情報や、前記貯留ビン１で乾燥処理する穀物の現在の乾燥処理情報等に基づいて、前記制御装置４が前記乾燥優先モードと前記品質優先モードのいずれかを自動で選択して前記穀物乾燥装置の乾燥運転を制御することもできる。これにより、施設の運営状況に合わせて前記穀物乾燥装置の乾燥運転を自動制御することができる。 In the above embodiment of the present invention, the two drying operation modes of the control device 4 can be manually selected by an operator operating the operation panel 5, but the control device 4 can also automatically select either the drying priority mode or the quality priority mode based on future receiving information for grains to be received at the receiving device, current drying processing information for grains to be dried in the storage bin 1, etc., to control the drying operation of the grain drying device. This allows the drying operation of the grain drying device to be automatically controlled in accordance with the operating status of the facility.

上記本発明の実施の形態では、静置式の穀物乾燥装置として周知の貯留ビンを例として説明したが、これに限定されるものでなく、例えば、荷受した穀物をコンテナに投入し、ラックに収容された前記コンテナの下部から乾燥用空気を送風して穀物を乾燥させる周知のラック式乾燥機にも適用することができる。 In the above embodiment of the present invention, a storage bin, which is a well-known static grain drying device, has been described as an example, but the present invention is not limited to this and can also be applied to a well-known rack-type dryer, for example, in which received grain is placed into a container and drying air is blown from the bottom of the container housed in a rack to dry the grain.

以上、本発明の実施の形態について説明したが、本発明は、上記実施の形態に限定されるものでなく、発明の範囲を逸脱しない限りにおいて構成を適宜変更することができる。 The above describes an embodiment of the present invention, but the present invention is not limited to the above embodiment, and the configuration can be modified as appropriate without departing from the scope of the invention.

本発明の穀物乾燥装置は、穀物の乾燥処理に際し、乾燥速度の優先と品質保持の優先を状況に応じて使い分けることができるものであり、荷受が多い場合に乾燥速度を優先して穀物の乾燥の促進を図ることができるため、穀物共同乾燥施設等において好適に使用することができる。 The grain drying device of the present invention is capable of prioritizing either drying speed or quality preservation depending on the situation when drying grains, and since it can prioritize drying speed when there are many deliveries, and promote drying of grains, it can be used effectively in shared grain drying facilities, etc.

１貯留ビン（穀物乾燥装置）
１１通風床
１２貯留タンク
１３送風室
２送風ファン
３バーナ
４制御装置
５操作パネル
５１乾燥優先ボタン
５２品質優先ボタン

1. Storage bin (grain drying device)
11 Ventilated floor 12 Storage tank 13 Blower room 2 Blower fan 3 Burner 4 Control device 5 Operation panel 51 Drying priority button 52 Quality priority button

Claims

A grain drying apparatus including a stationary drying section that dries grains and a control section that controls a drying operation of the drying section,
The control unit is provided with a first mode in which, when a large amount of grain is received , the drying operation of the drying unit is controlled by giving priority to a drying speed in order to promote drying of the grain, and a second mode in which the drying operation of the drying unit is controlled by giving priority to maintaining quality of the grain over promoting drying of the grain in order to prevent deterioration of the quality of the grain due to high temperature , and the control unit is provided with a manually selectable mode ;
The drying section includes a storage means into which grain is input, a blower means for blowing drying air to the storage means, and a burner means for heating outside air,
The control unit is
In the first mode, a target humidity of the drying air is set in advance, and when the humidity of the outside air is higher than the target humidity of the drying air, the outside air is heated by the burner means based on the target humidity, and the heated outside air is blown as the drying air to the storage means by the blower means;
a target increase in temperature of the drying air from the temperature of the outside air and a lower limit humidity of the drying air are set in advance, and when the humidity of the outside air is higher than the lower limit humidity of the drying air, the outside air is heated by the burner means based on the target increase in temperature, and the heated outside air is blown by the blower means to the storage means as the drying air .

A grain drying apparatus including a stationary drying section that dries grains and a control section that controls a drying operation of the drying section,
The control unit is provided with a first mode for controlling the drying operation of the drying unit by prioritizing the drying speed in order to promote drying of the grain when a large amount of grain is received, and a second mode for controlling the drying operation of the drying unit by prioritizing quality preservation over promotion of drying of the grain in order to prevent quality deterioration of the grain due to high temperature, and is capable of automatically selecting between the first mode and the second mode.
The drying section includes a storage means into which grain is input, a blower means for blowing drying air to the storage means, and a burner means for heating outside air,
The control unit is
In the first mode, a target humidity of the drying air is set in advance, and when the humidity of the outside air is higher than the target humidity of the drying air, the outside air is heated by the burner means based on the target humidity, and the heated outside air is blown as the drying air to the storage means by the blower means;
a target increase in temperature of the drying air from the temperature of the outside air and a lower limit humidity of the drying air are set in advance, and when the humidity of the outside air is higher than the lower limit humidity of the drying air, the outside air is heated by the burner means based on the target increase in temperature, and the heated outside air is blown by the blower means to the storage means as the drying air.

The control unit is
A grain drying device as described in claim 2, which automatically selects either the first mode or the second mode based on receiving information of grain received by the receiving device and drying processing information of grain to be dried in the drying section, and controls the drying operation of the drying section.

The control unit is
In the first mode, a target blowing temperature is calculated based on the temperature and humidity of the outside air and the target humidity of the drying air, and the outside air is heated by the burner means so that the temperature of the drying air becomes the target blowing temperature;
4. A grain drying apparatus as described in claim 1, wherein in the second mode, a target blowing temperature is calculated based on the temperature of the outside air and the target rising temperature of the drying air, and the outside air is heated by the burner means so that the temperature of the drying air becomes the target blowing temperature.

The control unit is
5. The grain drying apparatus according to claim 4, wherein in the first mode, an upper limit temperature of the drying air is set in advance, and when the target blowing temperature exceeds the upper limit temperature, the outside air is heated by the burner means so that the temperature of the drying air becomes the upper limit temperature.

The control unit is
6. The grain drying apparatus according to claim 4 or 5, wherein in the first mode, a lower limit temperature of the drying air is set in advance, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means so that the temperature of the drying air becomes the lower limit temperature.

The control unit is
7. The grain drying apparatus according to claim 1, wherein in the first mode, when the humidity of the outside air falls below the target humidity of the drying air, heating of the outside air by the burner means is temporarily stopped.

The control unit is
5. The grain drying apparatus according to claim 4 , wherein, in the second mode, when the humidity of the drying air falls below the lower limit humidity, the outside air is heated by the burner means so that the temperature of the drying air becomes the temperature at that time.

The control unit is
9. The grain drying apparatus according to claim 4 or 8, wherein in the second mode, a lower limit temperature of the drying air is set in advance, and when the target blowing temperature falls below the lower limit temperature, the outside air is heated by the burner means so that the temperature of the drying air becomes the lower limit temperature.

The control unit is
10. The grain drying apparatus according to claim 1, wherein in the second mode, when the humidity of the outside air falls below the lower limit humidity of the drying air, heating of the outside air by the burner means is temporarily stopped.