JPH02133789A - Drying controller for grain dryer - Google Patents
Drying controller for grain dryerInfo
- Publication number
- JPH02133789A JPH02133789A JP28855688A JP28855688A JPH02133789A JP H02133789 A JPH02133789 A JP H02133789A JP 28855688 A JP28855688 A JP 28855688A JP 28855688 A JP28855688 A JP 28855688A JP H02133789 A JPH02133789 A JP H02133789A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- grains
- value
- drying
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 38
- 238000007664 blowing Methods 0.000 claims 1
- 238000005496 tempering Methods 0.000 claims 1
- 238000009423 ventilation Methods 0.000 claims 1
- 235000013339 cereals Nutrition 0.000 abstract description 87
- 238000005336 cracking Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 240000007594 Oryza sativa Species 0.000 abstract description 2
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 235000009566 rice Nutrition 0.000 abstract description 2
- 238000010981 drying operation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、穀物乾燥機の乾燥制御装置に係り、特に水
分ムラにより生じる低水分穀物の胴割れを防止し得る乾
燥制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a drying control device for a grain dryer, and more particularly to a drying control device that can prevent shell cracking of low-moisture grains caused by uneven moisture content.
［従来の技術］
従来の穀物乾燥機の乾燥制御装置としては、例えば特公
昭６３−２９１９１号公報に開示の如く、測定した穀物
の水分値から平均水分値と標準偏差を算出し、水分値分
布の幅が、平均水分値に対して予め定めた範囲より大き
い時は、その平均水分値の穀物を乾燥するのに適当とさ
れる予め定めた乾燥用空気温度よりも若干低い温度の乾
燥用空気で乾燥するようにしたものが知られている。[Prior Art] A conventional drying control device for a grain dryer, for example, as disclosed in Japanese Patent Publication No. 63-29191, calculates the average moisture value and standard deviation from the measured moisture value of grain, and calculates the moisture value distribution. is larger than the predetermined range for the average moisture value, drying air at a temperature slightly lower than the predetermined drying air temperature appropriate for drying grain with that average moisture value is used. It is known that it is dried in
［発明が解決しようとする課題］
ところで、この乾燥制御装置にあっては、穀物の水分ム
ラによって生じる低水分の穀物の過乾燥及び吸湿による
胴割れを防止することができないという不都合があった
。即ち、一般的に穀物の水分は、整粒、未熟粒等の穀物
の品質及び圃場の状態、倒伏の有無、降雨等の種々の条
件により水分ムラが発生し、この水分ムラは水分の高い
ほど多く、特に初期水分ムラは標準偏差で２〜８％にお
よび、水分値分布の形態も種々の形態を呈するのが現状
である。そして、このような穀物を乾燥すると、乾燥終
期において整粒等の良質粒は水分が低く、未熟粒等の不
良粒はど水分が高くなる傾向にあるが、この状態におい
て、乾燥終期の熱風温度の切換えを水分値分布の幅だけ
でとらえると、例えば未熟粒等の混入により、分布に飛
び離れた水分値があったり、分布に複数の山があるよう
な場合、低水分値の良質粒の分布に基づく制御を行うこ
とができないため、低水分の良質粒に胴割れが発生する
という不都合があった。[Problems to be Solved by the Invention] However, this drying control device has the disadvantage that it cannot prevent grain cracking due to overdrying and moisture absorption of low-moisture grains caused by uneven moisture content of the grains. In other words, in general, the moisture content of grains varies depending on various conditions such as grain quality such as grading and immature grains, field conditions, presence or absence of lodging, and rainfall. Currently, the initial moisture unevenness in particular is as high as 2 to 8% in terms of standard deviation, and the moisture value distribution has various forms. When such grains are dried, good-quality grains such as regular grains tend to have low moisture content at the end of drying, while inferior grains such as immature grains tend to have high moisture content. If we look at the switching only from the width of the moisture value distribution, for example, if there are moisture values that are far apart in the distribution due to the contamination of immature grains, etc., or if there are multiple peaks in the distribution, it is likely that the quality grains with low moisture values will change. Since it is not possible to perform control based on distribution, there is a problem in that shell cracking occurs in low-moisture, high-quality grains.
そこで、この発明の目的は上述の不都合を除去し、水分
ムラにより生じる低水分の穀物であっても、胴割れを発
生させることなく乾燥し得る穀物乾燥機の乾燥制御装置
を実現するにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned disadvantages and to realize a drying control device for a grain dryer that can dry even grains with low moisture content caused by uneven moisture content without causing shell cracks.
［課題を解決するための手段］
この目的を達成するためにこの発明は、穀物に熱風を浴
びせる乾燥室と穀物を非通風下にてテンバリングする貯
留室とを有し、前記両室に穀物な循環させて乾燥する穀
物乾燥機において、複数個の穀物の水分値を一粒つづ測
定する手段と、この測定した水分値データを複数の区間
に分けて該区間内の度数を算出するとともに、度数が所
定数以上となる最低値側の区間水分値を算出する手段と
、この最低値側の区間水分値が所定値以下になフた際に
、前記熱風の設定温度を所定温度下げる手段とを具備す
ることを特徴とする。[Means for Solving the Problems] In order to achieve this object, the present invention has a drying chamber in which hot air is applied to the grains and a storage chamber in which the grains are tempered in a non-ventilated environment. In a grain dryer that circulates and dries grains, there is a means for measuring the moisture value of multiple grains one by one, and dividing the measured moisture value data into multiple sections to calculate the frequency within the section. means for calculating an interval moisture value on the lowest value side where the minimum value is greater than a predetermined number; and means for lowering the set temperature of the hot air by a predetermined temperature when the lowest value side moisture value falls below a predetermined value. It is characterized by comprising:
［作用］
上述の如く構成したことにより、−粒′つづ測定した穀
物の水分値データを複数の区間に分け、その区間内のデ
ータ数が所定数以上となる最低側の区間の水分値、即ち
整粒等の良質粒分布の立ち上がり部分の水分値を求め、
この水分値が所定値以下になった場合に熱風温度を所定
温度下げるため、低水分の良質粒分布に基づく乾燥制御
を行い得て、水分ムラによって生じる低水分穀物の胴割
れを防止し得る。[Operation] By configuring as described above, the moisture value data of grains measured one by one is divided into a plurality of sections, and the moisture value of the lowest section where the number of data in each section is equal to or greater than a predetermined number, i.e. Determine the moisture value at the rising part of the distribution of good quality grains such as sized grains,
Since the hot air temperature is lowered by a predetermined temperature when the moisture value falls below a predetermined value, drying control based on the distribution of low-moisture, high-quality grains can be performed, and shell cracking of low-moisture grains caused by uneven moisture content can be prevented.
［実施例コ
次に、この発明の一実施例を図面に基づいて詳細に説明
する。第１〜３図においてこの発明を実施した穀物乾燥
機の構成を説明する。[Embodiment] Next, an embodiment of the present invention will be described in detail based on the drawings. The structure of a grain dryer embodying the present invention will be explained with reference to FIGS. 1 to 3.
まず、第１．２図において、穀物乾燥機１は、乾燥部２
と貯留部３と集穀部４とを有し、揚穀機５で揚上された
穀物は、図示しない上部搬送手段により搬送されて貯留
部３内に均分落下され、乾燥部２て乾燥された後、集穀
部４下部に集められ、図示しない下部搬送手段により揚
穀機５下部まで移送されて再υ貯留部３まで揚上される
という循環を繰り返しつつ乾燥される。６は揚穀機５上
部から穀物を機外に排出するときに使用する排出管であ
る。First, in Fig. 1.2, the grain dryer 1 has a drying section 2.
The grain lifted by the grain lifting machine 5 is transported by an upper conveying means (not shown), is evenly dropped into the storage part 3, and is dried in the drying part 2. After that, the grains are collected at the lower part of the grain collection section 4, transferred to the lower part of the grain lifting machine 5 by a lower conveyance means (not shown), and then lifted up to the storage section 3 again, and are dried while repeating this cycle. Reference numeral 6 denotes a discharge pipe used to discharge grain from the upper part of the grain lifting machine 5 to the outside of the machine.
この循環を行うべく、揚穀機５と上・下部搬送手段とを
駆動する搬送機モータ７と、繰り出しバルブ（図示せず
）を駆動する循環モータ８とを設け、この搬送機モータ
７と循環モータ８は、後述する穀物種、穀物量により回
転速度が変化する。In order to perform this circulation, a conveyor motor 7 that drives the grain lifting machine 5 and the upper and lower conveying means, and a circulation motor 8 that drives a feeding valve (not shown) are provided. The rotation speed of the motor 8 changes depending on the type of grain and the amount of grain, which will be described later.
また、穀物中の夾雑物を排出する排塵機モータ９を揚穀
機５上部に設ける。Further, a dust ejector motor 9 for discharging impurities in the grain is provided on the upper part of the grain lifting machine 5.
前記乾燥部２には、穀物を熱風により乾燥させる熱風発
生装置を設ける。即ち、乾燥部２の前面には高温の空気
を発生するバーナｌＯを設けるとともに、背面側に排風
機モータｌｌの回転により高温の空気を吸引し、機外に
排出する排風機１２を設ける。これにより、乾燥部２に
熱風な貫流させ穀物を乾燥する。このバーナ１０の前面
には、制御盤１３を設け、また、揚穀機５の前面には、
穀物を乾燥機１内に張り込む時に使用するホッパー１４
及び張込まれた穀物の水分値を一粒づつ検知する水分計
１５を設ける。The drying section 2 is provided with a hot air generator for drying grains with hot air. That is, a burner lO that generates high-temperature air is provided on the front side of the drying section 2, and an exhaust fan 12 is installed on the back side that sucks in high-temperature air by rotating an exhaust fan motor II and discharges it to the outside of the machine. This allows hot air to flow through the drying section 2 to dry the grains. A control panel 13 is provided on the front of the burner 10, and a control panel 13 is provided on the front of the grain lifting machine 5.
Hopper 14 used when loading grain into dryer 1
A moisture meter 15 is also provided to detect the moisture value of each grain.
第３図は、制御装置の要部たる制御回路のブロック図で
ある。図において、１６〜１８は各種センサ群で、１６
は外気温度センサ、１７は熱風温度センサ、１８は穀温
センサ、１９〜２１は乾燥条件設定スイッチ群で、１９
は停止水分設定スイッチ、２０は穀物量設定スイッチ、
２１は穀物種設定スイッチ、２２〜２５は操作スイッチ
群で、２２は張込スイッチ、２３は乾燥運転スイッチ、
２４は排出スイッチ、２５は停止スイッチである。FIG. 3 is a block diagram of a control circuit that is a main part of the control device. In the figure, 16 to 18 are various sensor groups, and 16 to 18 are various sensor groups.
17 is an outside air temperature sensor, 17 is a hot air temperature sensor, 18 is a grain temperature sensor, 19 to 21 are a group of drying condition setting switches, and 19
is the stop moisture setting switch, 20 is the grain amount setting switch,
21 is a grain type setting switch, 22 to 25 are a group of operation switches, 22 is a tensioning switch, 23 is a drying operation switch,
24 is a discharge switch, and 25 is a stop switch.
また、２６は各種安全スイッチ群、２７はこの発明に係
る乾燥制御の実施及び不実施を切換えるモード切換スイ
ッチ、２８はＡ／Ｄ変換回路、２９はエンコーダ、３０
はＣＰＵ （中央演算処理装置）である。Further, 26 is a group of various safety switches, 27 is a mode changeover switch for switching between implementation and non-execution of the drying control according to the present invention, 28 is an A/D conversion circuit, 29 is an encoder, and 30
is a CPU (central processing unit).
このＣＰＵ３０は、ＲＯＭ（リードオンリーメモリ）、
ＲＡＭ（ランダム・アクセスメモリ）等を中心としたマ
イクロ・コンピュータで構成され、後述の如く穀物乾燥
機１の各種運転を制御する。This CPU 30 includes a ROM (read only memory),
It is composed of a microcomputer mainly including RAM (Random Access Memory), etc., and controls various operations of the grain dryer 1 as described later.
さらに、３１は穀物乾燥機１の故障箇所を表示すモニタ
ー表示器、３２は数字表示器で前記水分計１５で測定し
た水分値と熱風温度センサ１７で検出した熱風温度とを
交互にデジタル表示する。３３は各種警報を発生するブ
ザー、３４はバーナ駆動回路、３５はモータ駆動回路で
、前記ＣＰＵ３０の出力する制御信号に従フて夫々の負
荷を駆動する。即ち、バーナ駆動回路３４は、点火ヒー
タ３６、点火バルブ３７、ポンプ３８、バーナ用ファン
モータ３９を駆動制御し、また、モータ駆動回路３５は
、前記搬送機モータ７、循環モータ８、排塵機モータ９
、排風機モータ１１及び水分計モータ４０を駆動制御す
る。Further, numeral 31 is a monitor display for displaying the failure location of the grain dryer 1, and numeral 32 is a numerical display that digitally displays the moisture value measured by the moisture meter 15 and the hot air temperature detected by the hot air temperature sensor 17 alternately. . 33 is a buzzer that generates various alarms, 34 is a burner drive circuit, and 35 is a motor drive circuit, each of which drives the respective loads in accordance with a control signal output from the CPU 30. That is, the burner drive circuit 34 drives and controls the ignition heater 36, the ignition valve 37, the pump 38, and the burner fan motor 39, and the motor drive circuit 35 drives and controls the conveyor motor 7, circulation motor 8, and dust ejector. motor 9
, drives and controls the exhaust fan motor 11 and the moisture meter motor 40.
次に、この発明に係る乾燥制御装置の動作を第４図のフ
ローチャートに基づき説明する。Next, the operation of the drying control device according to the present invention will be explained based on the flowchart shown in FIG.
まず、前記モード切換スイッチ２７を実施側に切換え、
乾燥運転スイッチ２３をオンして「乾燥運転」を開始（
５０）すると、ＣＰＵ３０は、モータ駆動回路３５及び
バーナ駆動回路３４に制御信号を出力し、各種モータを
駆動させるとともに、バーナｌＯを点火り５１）する。First, switch the mode changeover switch 27 to the implementation side,
Turn on the drying operation switch 23 to start "drying operation" (
50) Then, the CPU 30 outputs a control signal to the motor drive circuit 35 and the burner drive circuit 34 to drive various motors and ignite the burner IO 51).
そして、水分計１５が作動して乾燥機１内の穀物を一粒
づつ、例えば２００個採取してその水分値を測定（５２
） ｂ、この測定した２００個の水分値データに基づき
次のようなデータ処理（５３）を行う。Then, the moisture meter 15 operates, and the grains in the dryer 1 are collected one by one, for example, 200 grains, and the moisture value is measured (52
) b. The following data processing (53) is performed based on the 200 measured moisture value data.
即ち、２００個のデータから平均水分値Ｍμと最大値と
最小値を求め、この最大値と最小値の区間を、例えば０
．５％毎に分けて複数の区間を設定して、各区間の度数
（データ数）を求めるとともに、各区間の度数を最低値
側及び最高値側からそれぞれ計数し、その度数が所定数
以上、例えば５個以上になる最初の区間の最低値側の区
間水分値Ｍｓと最高値側の区間水分値Ｍｌとをそれぞれ
求める。That is, the average moisture value Mμ, maximum value, and minimum value are determined from 200 pieces of data, and the interval between the maximum value and minimum value is set to, for example, 0.
．． Set multiple sections divided into 5% increments, calculate the frequency (number of data) of each section, count the frequency of each section from the lowest value side and the highest value side, and if the frequency is greater than or equal to a predetermined number, For example, the lowest section moisture value Ms and the highest section moisture value Ml of the first section of five or more sections are respectively determined.
なお、区間水分値Ｍｓ、Ｍｌとしては、その区間の中央
値が好ましいが、区間の幅が小ざい場合は、区間の最小
値あるいは最大値を用いてもよい。Note that as the section moisture values Ms and Ml, it is preferable to use the median value of the section, but if the width of the section is small, the minimum value or maximum value of the section may be used.
前記ステップ（５３）で各水分値が求められると、ＣＰ
Ｕ３０は、平均水分値Ｍμが停止水分値Ｍｔ以下か否か
を判断（５４） シ、この判断（５４）でＮＯの場合は
、前記最高値側の区間水分値Ｍ１又は平均水分値Ｍμ、
乾燥条件設定スイッチ群で設定された穀物種及び穀物量
、外気温度センサ１７で検出した外気温度等の各データ
から、演算式に基づいて熱風温度Ｔｓを算出して設定（
５５）シ、前記最低値側の区間水分値Ｍｓが、所定水分
値Ｍｏ、例えば１３％未満か否かを判断（５６）する。When each moisture value is determined in the step (53), CP
U30 determines whether or not the average moisture value Mμ is equal to or less than the stop moisture value Mt (54). If NO in this determination (54), the section moisture value M1 on the highest value side or the average moisture value Mμ,
The hot air temperature Ts is calculated and set based on the calculation formula from each data such as the grain type and grain amount set by the drying condition setting switch group and the outside air temperature detected by the outside air temperature sensor 17 (
55) It is determined whether the section moisture value Ms on the lowest value side is less than a predetermined moisture value Mo, for example, 13% (56).
この判断（５６）は、乾燥初期においてはＹＥＳになる
ことがなく、後述するステップ（５８）ヘジャンブする
が、乾燥終期になり水分ムラの多い穀物の水分値が低下
するとともに、その分布が低水分側で正規分布に近づい
てくるとＹＥＳとなる。This judgment (56) does not become YES in the early stage of drying, and returns to step (58), which will be described later. However, at the end of drying, the moisture value of the grain with uneven moisture decreases, and the distribution becomes YES. If the distribution approaches the normal distribution on the side, the answer is YES.
そして、このステップ（５６）でＹＥＳとなると、前記
ステップ（５５）で設定した熱風温度Ｔｓを所定温度、
例えば４度Ｃ下げ（５７） 、所定時間、例えば３０分
経過（５８） シて、前記ステップ（５２）に戻る。If YES in this step (56), the hot air temperature Ts set in the step (55) is set to a predetermined temperature.
For example, the temperature is lowered by 4 degrees C (57), and after a predetermined period of time, for example, 30 minutes (58), the process returns to step (52).
また、前記判断（５４）でＹＥＳ、即ち、平均水分値Ｍ
μが停止水分値Ｍｔ以下になった場合は、バーナｌＯを
停止（５９）させ、所定時間おいて各種モータを停止（
６０）させて、乾燥を終了（６１）する。Also, if the judgment (54) is YES, that is, the average moisture value M
When μ becomes less than the stop moisture value Mt, the burner IO is stopped (59), and various motors are stopped after a predetermined time (59).
60), and the drying is completed (61).
なお、ステップ（５３）で区間水分値Ｍｓ、Ｍｌを算出
するための度数は、測定する穀物が１００〜３００個の
場合、３〜１０個であれば、良質粒分布の立ち上がりを
的確にとらえることができ、また、所定水分値Ｍｏは１
３〜１４％が最適であることが実験により確認されてい
る。In addition, when the number of grains to be measured is 100 to 300, the frequency for calculating the interval moisture values Ms and Ml in step (53) should be 3 to 10 to accurately capture the rise in the distribution of good quality grains. , and the predetermined moisture value Mo is 1
Experiments have confirmed that 3-14% is optimal.
このようにこの発明に係る乾燥制御装置にあっては、−
粒づつ測定した複数個の穀物の水分値データから、複数
の区間を設定し、この区間の度数を最低値側から計数し
、最初に例えは５個以上となる区間水分値Ｍｓを、停止
水分値Ｍｔより低く設定した所定水分値Ｍｏと比較し、
Ｍｓ＜Ｍｏになった時点で、自動的に熱風温度を所定温
度下げてゆっくりと乾燥するため、乾燥終期の熱風温度
の切換えを、良質粒の集合する低水分穀物の分布に基づ
いて行うことができ、水分ムラにより生じろ低水分穀物
の胴割れを防止することができ、特に、種子籾等の穀物
乾燥を容易に行うことができる。また、乾燥終期等にお
いて、水分値分布に飛び離れたデータがあっても、この
データは無視して良質粒のデータのみで熱風温度を自動
的に下げるため、異常データのカット等の特別の装置を
必要とせず、簡単な構成で実施し得る。Thus, in the drying control device according to the present invention, -
From the moisture value data of multiple grains measured grain by grain, multiple intervals are set, the frequency of this interval is counted from the lowest value side, and the first interval moisture value Ms, for example, 5 or more, is determined as the stop moisture value. Comparing with a predetermined moisture value Mo set lower than the value Mt,
When Ms<Mo, the hot air temperature is automatically lowered to a predetermined temperature to slowly dry the grain, so the hot air temperature at the end of drying can be changed based on the distribution of low-moisture grains where good quality grains gather. It is possible to prevent shell cracking of low-moisture grains caused by uneven moisture content, and in particular, it is possible to easily dry grains such as seed rice. In addition, even if there is data that differs widely in the moisture value distribution at the end of drying, etc., this data is ignored and the hot air temperature is automatically lowered using only the data of good quality grains. It can be implemented with a simple configuration.
なお、上記実施例においては、区間水分値Ｍｓとして、
その区間の度数が最初に所定数以上になる区間水分値を
用いたが、この発明はこれに何ら限定されず、例えば、
区間の度数が２回続けて所定数具りになる場合とか、あ
るいは２回続けかつ度数が増加する場合の例えば２回目
の区間水分値を用いること等もできる。In addition, in the above embodiment, as the section moisture value Ms,
Although the section moisture value in which the frequency of the section is first equal to or higher than a predetermined number is used, the present invention is not limited to this in any way; for example,
It is also possible to use, for example, the second section moisture value when the frequency of the section reaches a predetermined number twice in a row, or when the frequency increases twice in a row.
［発明の効果］
以上詳細に説明したように、この発明に係る穀物乾燥機
の乾燥制御装置にあっては、乾燥終期の熱風温度の切換
えを、−粒づつ測定した水分値データを複数の区間に分
けるとともに、この区間内の度数が所定数以上となる最
低値側の区間水分値に基づいて行うため、水分ムラによ
り生じる低水分穀物の過乾燥及び吸湿による胴割れを防
止することができる。[Effects of the Invention] As explained in detail above, in the drying control device for a grain dryer according to the present invention, the hot air temperature at the end of drying is switched by using moisture value data measured grain by grain in a plurality of intervals. Since this is performed based on the lowest section moisture value in which the frequency within this section is equal to or higher than a predetermined number, overdrying of low-moisture grains caused by uneven moisture content and shell cracking due to moisture absorption can be prevented.
第１図は穀物乾燥機の正面図、第２図は第１図の右側面
図、第３図は制御回路のブロック図、第４図は制御装置
の動作の一例を示すフローチャートである。
１・・・穀物乾燥機、 ２・・・乾燥部、３・・・貯留
部、 ４・・・集穀部、１３・・・制御盤、
１５・・・水分計、３０・・・ＣＰＵ、 Ｍμ・
・・平均水分値Ｍｓ・・・区間水分値、Ｍｏ・・・所定
水分値。
特許出願人 静岡製機株式会社
代表者 鈴木重夫FIG. 1 is a front view of the grain dryer, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a block diagram of a control circuit, and FIG. 4 is a flow chart showing an example of the operation of the control device. 1... Grain dryer, 2... Drying section, 3... Storage section, 4... Grain collection section, 13... Control panel,
15...Moisture meter, 30...CPU, Mμ・
...Average moisture value Ms...section moisture value, Mo...predetermined moisture value. Patent applicant: Shizuoka Seiki Co., Ltd. Representative: Shigeo Suzuki
Claims (1)
テンパリングする貯留室とを有し、前記両室に穀物を循
環させて乾燥する穀物乾燥機において、 ロ、複数個の穀物の水分値を一粒つづ測定する手段と、 ハ、この測定した水分値データを複数の区間に分けて該
区間内の度数を算出するとともに、度数が所定数以上と
なる最低値側の区間水分値を算出する手段と、 ニ、この最低値側の区間水分値が所定値以下になった際
に、前記熱風の設定温度を所定温度下げる手段、 とを具備する穀物乾燥機の乾燥制御装置。[Scope of Claims] A. A grain dryer comprising a drying chamber for blowing hot air onto the grains and a storage chamber for tempering the grains without ventilation, and for drying the grains by circulating the grains in both chambers, b. A means for measuring the moisture content of a plurality of grains one by one; C. Divide the measured moisture value data into multiple sections and calculate the frequency within the section, and the lowest value at which the frequency is equal to or higher than a predetermined number. A grain dryer comprising: means for calculating the moisture value of the section on the side; and d. means for lowering the set temperature of the hot air by a predetermined temperature when the moisture value of the section on the lowest value side becomes less than a predetermined value. Drying control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28855688A JPH0686982B2 (en) | 1988-11-15 | 1988-11-15 | Grain dryer drying controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28855688A JPH0686982B2 (en) | 1988-11-15 | 1988-11-15 | Grain dryer drying controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02133789A true JPH02133789A (en) | 1990-05-22 |
| JPH0686982B2 JPH0686982B2 (en) | 1994-11-02 |
Family
ID=17731777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28855688A Expired - Fee Related JPH0686982B2 (en) | 1988-11-15 | 1988-11-15 | Grain dryer drying controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686982B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032900A (en) * | 2005-07-26 | 2007-02-08 | Satake Corp | Cracking preventive operation method for circulating grain dryer |
-
1988
- 1988-11-15 JP JP28855688A patent/JPH0686982B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032900A (en) * | 2005-07-26 | 2007-02-08 | Satake Corp | Cracking preventive operation method for circulating grain dryer |
| JP4697536B2 (en) * | 2005-07-26 | 2011-06-08 | 株式会社サタケ | Circulation prevention operation method of circulation type grain dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686982B2 (en) | 1994-11-02 |
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| LAPS | Cancellation because of no payment of annual fees |