JP2021105479A

JP2021105479A - Drying device and method for controlling operation of drying device

Info

Publication number: JP2021105479A
Application number: JP2019236556A
Authority: JP
Inventors: 大樹岡田; Daiki Okada; 元隆赤津; Mototaka Akatsu; 計自高橋; Keiji Takahashi; 渡邉　雅之; Masayuki Watanabe; 雅之渡邉; 崇仁大島; Takahito Oshima; 辰矩花井; Tatsunori Hanai; 小林　智; Satoshi Kobayashi; 智小林
Original assignee: Micro Denshi Co Ltd
Current assignee: Micro Denshi Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-07-26

Abstract

To provide a drying device that can reduce degradation in quality of an object to be dried due to excessive drying processing and energy losses, and to provide a method for controlling operation of the drying device.SOLUTION: A drying device 1 includes: a drying furnace 2 for heating and drying an object 100 to be dried using heating means 3; weight acquisition means 5 for acquiring a weight of the object 100 to be dried in the drying furnace 2; and control means 7 for controlling operation of the drying furnace 2 by acquiring a weight of the object 100 to be dried from the weight acquisition means 5 every predetermined time. The control means 7 determines whether or not a weight difference between a preceding weight which is a weight of the object 100 to be dried acquired by the weight acquisition means 5 in the past and a present weight which is a weight of the object 100 to be dried acquired by the weight acquisition means 5 at present is equal to or smaller than a threshold and, when the weight difference is equal to or smaller than the threshold, stops operation of the drying furnace 2.SELECTED DRAWING: Figure 1

Description

本開示は、ゴム材料製品（パッキン、シール素材、ゴムローラ等）、セラミック製品、フェライト製品、食品（茶葉、菓子、即席食品等）等、各種製品の熱処理に用いられる乾燥装置及び乾燥装置の運転制御方法に関する。 The present disclosure describes the operation control of a drying device and a drying device used for heat treatment of various products such as rubber material products (packing, sealing material, rubber rollers, etc.), ceramic products, ferrite products, foods (tea leaves, confectionery, instant foods, etc.). Regarding the method.

ゴム部材、セラミック部材等の加熱、乾燥に用いられる乾燥装置は加熱方式が熱風を用いた熱風循環型乾燥炉やマイクロ波を用いた乾燥炉等、様々な装置が用いられている。このような乾燥装置や加熱装置において、熱処理後の被処理物の品質を一定にするために、装置内の温度を適切に制御することが重要な課題であった。
例えば、熱風循環型オーブンにおいて、風向板によって内槽に導入する風量の上下方向のバランスを調整できるように構成し、槽内の温度分布を監視しながら調整風量を上下均等に配分することにより温度分布保証範囲を拡大する装置が開示されている（特許文献１）。
また、熱処理室の出口に循環するガスの温度検出部を設け、当該温度検出部で検出されたガスの温度情報を熱源にフィードバックして熱源の温度の制御をすることを可能とし、熱処理室内の被熱処理物の熱処理温度を正確に制御する熱風循環炉が開示されている（特許文献２）。 As the drying device used for heating and drying rubber members, ceramic members, etc., various devices such as a hot air circulation type drying furnace using hot air and a drying furnace using microwaves are used. In such a drying device and a heating device, it has been an important issue to appropriately control the temperature inside the device in order to keep the quality of the object to be treated after the heat treatment constant.
For example, in a hot air circulation type oven, the temperature is configured so that the vertical balance of the air volume introduced into the inner tank can be adjusted by the air direction plate, and the adjusted air volume is evenly distributed vertically while monitoring the temperature distribution in the tank. An apparatus for expanding the distribution guarantee range is disclosed (Patent Document 1).
In addition, a temperature detection unit for circulating gas is provided at the outlet of the heat treatment chamber, and the temperature information of the gas detected by the temperature detection unit can be fed back to the heat source to control the temperature of the heat source. A hot air circulation furnace that accurately controls the heat treatment temperature of the object to be heat-treated is disclosed (Patent Document 2).

特開２００１−１２８７０号公報Japanese Unexamined Patent Publication No. 2001-12870 ＷＯ２０１２／１１７８０３WO2012 / 117803

しかし、乾燥装置や加熱装置で加熱・乾燥処理等をする被乾燥物は、様々な材料のものがあり、また加熱する量や大きさ、含んでいる液体の量も様々であるため、通常このような加熱・乾燥の条件は加熱・乾燥作業の都度変わる場合も多いものである。
したがって、単に温度分布保証範囲を拡大することや装置内の温度を正確に制御することだけでは、このような多様な被乾燥物に対して、過剰な乾燥による品質の低下及びこれによるエネルギーのロスを無くすことができないことも多かった。 However, the object to be dried, which is heated and dried by a drying device or a heating device, is made of various materials, and the amount and size of the material to be heated and the amount of liquid contained are also various. Such heating / drying conditions often change each time the heating / drying operation is performed.
Therefore, simply expanding the guaranteed temperature distribution range or accurately controlling the temperature inside the equipment will result in quality deterioration due to excessive drying and energy loss due to such various objects to be dried. In many cases, it was not possible to eliminate.

そこで、本開示は、多様な被乾燥物に対して、過剰な乾燥処理による被乾燥物の品質低下やエネルギーのロスを低減することができる乾燥装置及び乾燥装置の運転制御方法を提供することを目的とする。 Therefore, the present disclosure provides a drying device and an operation control method for the drying device, which can reduce quality deterioration and energy loss of the object to be dried due to excessive drying treatment for various objects to be dried. The purpose.

本発明は、上記目的を達成するために以下によって把握される。
（１）本発明の乾燥装置は、被乾燥物を加熱手段により加熱して乾燥させる乾燥炉と、前記乾燥炉の中の前記被乾燥物の重量を取得する重量取得手段と、前記重量取得手段から所定時間毎に前記被乾燥物の重量を取得して前記乾燥炉の運転を制御する制御手段と、を備え、前記制御手段は、過去に前記重量取得手段が取得した前記被乾燥物の重量である先行重量と、現時点で前記重量取得手段が取得した前記被乾燥物の重量である現在重量との重量差が閾値以下であるか否かの判定を行い、前記重量差が閾値以下である場合に前記乾燥炉の運転を停止する。
（２）上記（１）において、前記乾燥炉内において前記被乾燥物を載置する載置部を備え、前記重量取得手段は、前記被乾燥物を載置した前記載置部の重量を測定することにより前記被乾燥物の重量を取得するように構成されている。
（３）上記（１）又は（２）において、前記重量取得手段と前記載置部を接続する接続部と、前記接続部を支持する軸受部と、を有する。
（４）上記（３）において、前記軸受部は、前記接続部を支持する滑り軸受と、前記滑り軸受の内径と前記接続部の外径の隙間に気体を吹き込む気体噴射手段と、を有する。
（５）上記（３）又は（４）において、前記載置部を回転させる回転駆動部を有し、前記接続部が、前記回転駆動部と前記載置部を接続し、前記軸受部が、前記載置部及び前記接続部を回転可能に支持する。
（６）上記（１）から（５）のいずれかにおいて、前記重量取得手段は、前記乾燥炉の外部に配置されている。
（７）上記（１）から（６）のいずれかにおいて、前記先行重量は、現時点の直前に前記重量取得手段が取得した前記被乾燥物の重量である。
（８）上記（１）から（６）のいずれかにおいて、前記先行重量は、前記被乾燥物の加熱前に前記重量取得手段が取得した前記被乾燥物の重量である。
（９）上記（１）から（８）のいずれかにおいて、前記制御手段は、前記被乾燥物の加熱を開始した時点から一定時間が経過したときに前記判定を行う。
（１０）上記（１）から（９）のいずれかにおいて、前記乾燥炉内の前記被乾燥物の温度を測定する温度測定手段を有し、前記制御手段は、前記温度測定手段から所定時間毎に前記被乾燥物の温度を取得し、取得した前記被乾燥物の温度が温度閾値を超えたときに前記判定を行う。
（１１）本発明の乾燥装置の運転制御方法は、被乾燥物を加熱手段により加熱して乾燥させる乾燥炉と、前記乾燥炉の運転を制御する制御手段と、を備えた乾燥装置において、前記制御手段が実行する乾燥装置の運転制御方法であって、前記乾燥炉内の前記被乾燥物の重量を所定時間毎に取得するデータ取得ステップと、過去に前記データ取得ステップで取得した前記被乾燥物の重量である先行重量と、現時点において前記デ−タ取得ステップで取得した前記被乾燥物の重量である現在重量との重量差が閾値以下であるか否かの判定を行う判定ステップと、前記判定ステップで前記重量差が閾値以下であると判定された場合に前記乾燥炉の運転を停止する運転制御ステップと、を含む。
（１２）上記（１１）において、前記先行重量は、現時点の直前において前記データ取得ステップで取得した前記被乾燥物の重量である。
（１３）上記（１１）において、前記先行重量は、前記被乾燥物の加熱前に前記データ取得ステップで取得した前記被乾燥物の重量である。
（１４）上記（１１）から（１３）のいずれかにおいて、前記判定ステップは、前記被乾燥物の加熱を開始した時点から一定時間が経過したときに行う。
（１５）上記（１１）から（１４）のいずれかにおいて、前記データ取得ステップでは、前記重量に加えて、前記乾燥炉内の前記被乾燥物の温度を所定時間毎に取得し、前記判定ステップは、前記データ取得ステップで取得した前記被乾燥物の温度が温度閾値を超えたときに行う。 The present invention is grasped by the following in order to achieve the above object.
(1) The drying apparatus of the present invention includes a drying furnace for heating and drying an object to be dried by a heating means, a weight acquisition means for acquiring the weight of the object to be dried in the drying furnace, and the weight acquisition means. The control means is provided with a control means for acquiring the weight of the object to be dried and controlling the operation of the drying furnace at predetermined time intervals, and the control means is the weight of the object to be dried acquired by the weight acquisition means in the past. It is determined whether or not the weight difference between the preceding weight, which is, and the current weight, which is the weight of the object to be dried, which is currently acquired by the weight acquisition means, is equal to or less than the threshold value, and the weight difference is equal to or less than the threshold value. In some cases, the operation of the drying furnace is stopped.
(2) In the above (1), the mounting portion on which the object to be dried is placed is provided in the drying furnace, and the weight acquisition means measures the weight of the previously described placing portion on which the object to be dried is placed. It is configured to obtain the weight of the object to be dried.
(3) In the above (1) or (2), it has a connecting portion for connecting the weight acquisition means and the above-mentioned mounting portion, and a bearing portion for supporting the connecting portion.
(4) In the above (3), the bearing portion includes a slide bearing that supports the connection portion and a gas injection means that blows gas into a gap between the inner diameter of the slide bearing and the outer diameter of the connection portion.
(5) In the above (3) or (4), the rotation drive unit for rotating the above-mentioned mounting portion is provided, the connection portion connects the rotation drive portion and the previously described placement portion, and the bearing portion The above-mentioned bearing and the connection are rotatably supported.
(6) In any of the above (1) to (5), the weight acquisition means is arranged outside the drying furnace.
(7) In any of the above (1) to (6), the preceding weight is the weight of the object to be dried acquired by the weight acquisition means immediately before the present time.
(8) In any of the above (1) to (6), the preceding weight is the weight of the object to be dried acquired by the weight acquisition means before heating the object to be dried.
(9) In any of the above (1) to (8), the control means makes the determination when a certain time has elapsed from the time when the heating of the object to be dried is started.
(10) In any of the above (1) to (9), the temperature measuring means for measuring the temperature of the object to be dried in the drying furnace is provided, and the controlling means is provided by the temperature measuring means every predetermined time. The temperature of the object to be dried is acquired, and the determination is made when the temperature of the acquired object to be dried exceeds the temperature threshold.
(11) The operation control method of the drying apparatus of the present invention is described in a drying apparatus including a drying furnace for heating and drying an object to be dried by a heating means and a control means for controlling the operation of the drying furnace. It is an operation control method of a drying apparatus executed by a control means, and is a data acquisition step of acquiring the weight of the object to be dried in the drying furnace at predetermined time intervals, and the drying to be dried which was acquired in the past in the data acquisition step. A determination step for determining whether or not the weight difference between the preceding weight, which is the weight of the object, and the current weight, which is the weight of the object to be dried, acquired in the data acquisition step at the present time is equal to or less than the threshold value. The operation control step of stopping the operation of the drying furnace when the weight difference is determined to be equal to or less than the threshold value in the determination step is included.
(12) In the above (11), the preceding weight is the weight of the object to be dried acquired in the data acquisition step immediately before the present time.
(13) In the above (11), the preceding weight is the weight of the object to be dried acquired in the data acquisition step before heating the object to be dried.
(14) In any of the above (11) to (13), the determination step is performed when a certain time has elapsed from the time when the heating of the object to be dried is started.
(15) In any of the above (11) to (14), in the data acquisition step, in addition to the weight, the temperature of the object to be dried in the drying furnace is acquired at predetermined time intervals, and the determination step. Is performed when the temperature of the object to be dried, which is acquired in the data acquisition step, exceeds the temperature threshold.

本開示によれば、多様な被乾燥物に対して、過剰な乾燥処理による被乾燥物の品質低下やエネルギーのロスを低減することができる乾燥装置及び乾燥装置の運転制御方法を提供することができる。 According to the present disclosure, it is possible to provide a drying device and an operation control method for a drying device capable of reducing quality deterioration and energy loss of the object to be dried due to excessive drying treatment for various objects to be dried. can.

本発明の実施形態に係る乾燥装置の概略断面図である。It is the schematic sectional drawing of the drying apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る乾燥装置の軸受部の拡大断面図である。It is an enlarged sectional view of the bearing part of the drying apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る別の乾燥装置の概略断面図である。It is the schematic sectional drawing of another drying apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る別の乾燥装置の軸受部の拡大断面図である。It is an enlarged sectional view of the bearing part of another drying apparatus which concerns on embodiment of this invention. 制御手段の内部構成を示す機能ブロック図である。It is a functional block diagram which shows the internal structure of a control means. 本発明の実施形態に係る乾燥装置による被乾燥物の加熱処理における被乾燥物の重量及び温度の時間的変化を示すグラフである。It is a graph which shows the time change of the weight and temperature of the object to be dried in the heat treatment of the object to be dried by the drying apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る乾燥装置による被乾燥物の加熱処理を示すフローチャートである。It is a flowchart which shows the heat treatment of the object to be dried by the drying apparatus which concerns on embodiment of this invention.

以下、添付図面を参照しながら本発明の実施形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

本実施形態の乾燥装置１は、例えば、ゴム材料製品（パッキン、シール素材、ゴムローラ等）、セラミック製品、フェライト製品、食品（茶葉、菓子、即席食品等）等の加熱・乾燥に用いられる。これらの被乾燥物は、その過程で液体を含侵させたり、液体に混ぜたりする工程を有するものがあり、これらは最終製品にする過程で加熱・乾燥処理を行うことによって製造される。 The drying device 1 of the present embodiment is used for heating and drying rubber material products (packing, sealing material, rubber rollers, etc.), ceramic products, ferrite products, foods (tea leaves, confectionery, instant foods, etc.), for example. Some of these objects to be dried have a step of impregnating the liquid or mixing with the liquid in the process, and these are manufactured by performing a heating / drying treatment in the process of making a final product.

図１は、本発明の実施形態に係る乾燥装置１の概略断面図である。
図１を用いて、本発明の実施形態に係る乾燥装置１の概要について説明する。
以下の説明において、乾燥装置１は、被乾燥物１００を乾燥装置１の中に装入し、加熱・乾燥処理を行い、加熱・乾燥処理完了後に被乾燥物１００を取り出して、次の被乾燥物１００を装入するようにして使用する、いわゆるバッチ式の乾燥装置である。しかし、これに限定されるものではなく、例えば、コンベアで被乾燥物１００を搬送しながら加熱するいわゆる連続加熱装置であってもよい。 FIG. 1 is a schematic cross-sectional view of the drying apparatus 1 according to the embodiment of the present invention.
An outline of the drying apparatus 1 according to the embodiment of the present invention will be described with reference to FIG.
In the following description, the drying device 1 charges the object to be dried 100 into the drying device 1, heats and dries the object, takes out the object to be dried 100 after the heating and drying process is completed, and then performs the next drying process. It is a so-called batch-type drying device that is used as if the object 100 is charged. However, the present invention is not limited to this, and for example, a so-called continuous heating device that heats the object to be dried 100 while being conveyed by a conveyor may be used.

図１に示すとおり、乾燥装置１は乾燥炉２が支持台２６に載置された状態で構成されており、支持台２６が乾燥装置１の設置面に設置される。 As shown in FIG. 1, the drying device 1 is configured with the drying furnace 2 mounted on the support base 26, and the support base 26 is installed on the installation surface of the drying device 1.

乾燥炉２は、加熱・乾燥する内部空間である乾燥室８を有している。乾燥炉２の側壁５２には、加熱手段３として、例えば、電気ヒータを熱源とする熱風発生装置３ａが配置されている。この熱風発生装置３ａには、生成した熱風を乾燥室８に送風する送風管３５が接続されており、乾燥炉２に設けられた送風口３０から乾燥炉２の中に熱風を送風する。送風管３５及び送風口３０は、乾燥炉２の中の被乾燥物１００に向けて熱風を送風できる位置に配置されている。 The drying furnace 2 has a drying chamber 8 which is an internal space for heating and drying. On the side wall 52 of the drying furnace 2, for example, a hot air generator 3a using an electric heater as a heat source is arranged as the heating means 3. A blower pipe 35 for blowing the generated hot air to the drying chamber 8 is connected to the hot air generator 3a, and the hot air is blown into the drying furnace 2 from the air outlet 30 provided in the drying furnace 2. The blower pipe 35 and the blower port 30 are arranged at positions where hot air can be blown toward the object to be dried 100 in the drying furnace 2.

乾燥炉２の側壁５３には吸気口３１が設けられており吸気管３２が接続されている。吸気管３２は、吸気口３１の反対側が熱風発生装置３ａに接続されている。このように構成することで、乾燥室８の中に送られた熱風は被乾燥物１００を加熱・乾燥した後、強制的に吸気管３２により回収されて熱風発生装置３ａに戻る。そして、熱風発生装置３ａによって所定の温度の熱風に加熱され、再び送風管３５を通って送風口３０から乾燥室８の中に送風される。このように、本実施形態の乾燥装置１は、熱風を熱風発生装置３ａと乾燥室８との間で循環するようにして、熱効率を高くしている。 An intake port 31 is provided on the side wall 53 of the drying furnace 2, and an intake pipe 32 is connected to the side wall 53. The side of the intake pipe 32 opposite to the intake port 31 is connected to the hot air generator 3a. With this configuration, the hot air sent into the drying chamber 8 is forcibly recovered by the intake pipe 32 after heating and drying the object to be dried 100, and returns to the hot air generator 3a. Then, it is heated to hot air at a predetermined temperature by the hot air generator 3a, and is again blown from the air outlet 30 into the drying chamber 8 through the air pipe 35. As described above, in the drying device 1 of the present embodiment, the hot air is circulated between the hot air generator 3a and the drying chamber 8 to improve the thermal efficiency.

本実施形態に係る乾燥装置１は加熱手段３として熱風発生装置３ａの他に発信器３ｂが設けられており、発信器３ｂは導波管３６により側壁５２に設けられた入射口３３に接続されている。発信器３ｂはマイクロ波を発生し、発信器３ｂが発生したマイクロ波は、入射口３３から乾燥室８に入射されて被乾燥物１００を加熱・乾燥する。
マイクロ波加熱装置においては、装置から外部に漏洩するマイクロ波の限度値が安全基準として規定されている。この安全規格を遵守するために、乾燥装置１は、図示しないマイクロ波の漏洩防止構造を有している。マイクロ波はわずかな隙間から外部に漏洩するため、これらの隙間を無くすとともに、どうしても必要な隙間の近辺にはチョークフィルター等のフィルターを設けて、漏洩するマイクロ波を減衰させるようにしている。 The drying device 1 according to the present embodiment is provided with a transmitter 3b in addition to the hot air generator 3a as the heating means 3, and the transmitter 3b is connected to an incident port 33 provided on the side wall 52 by a waveguide 36. ing. The transmitter 3b generates microwaves, and the microwaves generated by the transmitter 3b are incident on the drying chamber 8 from the incident port 33 to heat and dry the object to be dried 100.
In the microwave heating device, the limit value of the microwave leaking from the device to the outside is defined as a safety standard. In order to comply with this safety standard, the drying device 1 has a microwave leakage prevention structure (not shown). Since microwaves leak to the outside through a small gap, these gaps are eliminated and a filter such as a choke filter is provided in the vicinity of the gaps that are absolutely necessary to attenuate the leaked microwaves.

マイクロ波による加熱は被乾燥物１００の内部から加熱するものであり、また、加熱の起動・停止を瞬時に行うことができるという特性がある。したがって、乾燥室８に熱風を送風して被乾燥物１００の周囲温度を高くすることで被乾燥物１００の表面から乾燥する熱風加熱機能とマイクロ波による加熱機能を組み合わせることで、被乾燥物１００の表面と内部から効率的に加熱することが可能となる。また、内部の加熱を停止したい場合には、発信器３ｂの動作を切ることで瞬時にマイクロ波による加熱を停止することができる。このように、異なる加熱手段３を組み合わせて構成することで、被乾燥物１００の加熱・乾燥処理の終盤において、より細やかな加熱の制御をすることができ、過剰加熱による被乾燥物１００の品質低下やエネルギーのロスを抑えることができる。 Heating by microwaves heats from the inside of the object to be dried 100, and has a characteristic that heating can be started and stopped instantly. Therefore, by combining the hot air heating function that dries from the surface of the object to be dried 100 by raising the ambient temperature of the object to be dried 100 by blowing hot air into the drying chamber 8 and the heating function by microwaves, the object to be dried 100 It is possible to efficiently heat from the surface and the inside of the. Further, when it is desired to stop the heating inside, the heating by the microwave can be stopped instantly by turning off the operation of the transmitter 3b. By combining different heating means 3 in this way, more fine control of heating can be performed at the final stage of the heating / drying treatment of the object to be dried 100, and the quality of the object to be dried 100 due to overheating can be controlled. It is possible to suppress the decrease and energy loss.

乾燥装置１に使用する加熱手段３は、熱風発生装置３ａや発信器３ｂに限定されるものではなく、例えば、赤外線加熱手段や高周波加熱手段等も同様に使用することができる。これらは、被乾燥物１００の特性に合わせて適宜選択される。 The heating means 3 used in the drying device 1 is not limited to the hot air generator 3a and the transmitter 3b, and for example, an infrared heating means, a high frequency heating means, and the like can also be used in the same manner. These are appropriately selected according to the characteristics of the object to be dried 100.

側壁５３には、温度測定手段６が設置されており、被乾燥物１００の温度を常時取得できるようになっている。温度測定手段６は、例えば、放射温度計やサーモグラフィ等の非接触型の温度計が用いられる。検出した被乾燥物１００の温度情報は電気信号に変換されて制御手段７で処理される。 A temperature measuring means 6 is installed on the side wall 53 so that the temperature of the object to be dried 100 can be constantly acquired. As the temperature measuring means 6, for example, a non-contact type thermometer such as a radiation thermometer or a thermography is used. The detected temperature information of the object to be dried 100 is converted into an electric signal and processed by the control means 7.

乾燥室８の中には、被乾燥物１００を載置する載置部１０が設けられており、被乾燥物１００を載置部１０に載置して加熱・乾燥する。図１では、載置部１０の主要構成要素としてターンテーブル２５を用いた場合が示されている。 In the drying chamber 8, a mounting portion 10 on which the object to be dried 100 is placed is provided, and the object to be dried 100 is placed on the mounting portion 10 to be heated and dried. FIG. 1 shows a case where the turntable 25 is used as a main component of the mounting portion 10.

乾燥炉２の底壁５１に設けられた孔５１ａを通して接続部１１が乾燥室８とその外部に亘って設けられている。ターンテーブル２５はその下面の中心に接続部１１が接合されており、接続部１１に設けられた軸直角断面が円形の丸軸部１２において、軸受部１５によって回転可能に支持されている。接続部１１はその下方に歯車２２ａが取り付けされており、歯車２２ｂによりモータ２１と連結されている。
このように、モータ２１、歯車２２ａ、２２ｂで構成された回転駆動部２０により接続部１１を回転させ、接続部１１と接合されたターンテーブル２５を回転させる。そして、ターンテーブル２５に載置された被乾燥物１００を回転させながら加熱・乾燥することで、被乾燥物１００の加熱ムラを防止することができる。 A connecting portion 11 is provided over the drying chamber 8 and its outside through a hole 51a provided in the bottom wall 51 of the drying furnace 2. The turntable 25 has a connecting portion 11 joined to the center of the lower surface thereof, and is rotatably supported by a bearing portion 15 in a round shaft portion 12 having a circular shaft perpendicular cross section provided on the connecting portion 11. A gear 22a is attached to the connecting portion 11 below the connecting portion 11, and the connecting portion 11 is connected to the motor 21 by the gear 22b.
In this way, the connection portion 11 is rotated by the rotation drive portion 20 composed of the motor 21, the gears 22a, and 22b, and the turntable 25 joined to the connection portion 11 is rotated. Then, by heating and drying the object to be dried 100 placed on the turntable 25 while rotating it, it is possible to prevent uneven heating of the object to be dried 100.

接続部１１は、その下端において重量取得手段５に接合されており、被乾燥物１００とターンテーブル２５、接続部１１等から構成される載置部１０の重量を、加熱・乾燥処理しながら、常時測定することができる。重量取得手段５は、例えば、重量を電気信号に変換するロードセル等が用いられる。ロードセルには通常、被測定物の変形量を測定するひずみゲージが用いられているが、温度が変わると熱膨張や熱収縮により接続部１１やひずみゲージにひずみが発生してしまい正確な重量測定に支障が生ずる場合がある。これを防止するために、本実施形態においては、重量取得手段５は乾燥炉２の外部に配置されている。更に、乾燥炉２の熱の影響を受けないように、後述するように空冷されている。
なお、乾燥炉２は支持台２６に支持されるように設置されており、重量取得手段５は支持台２６に固定され、測定する重量を受けることができるように構成されている。このような構成の場合、重量取得手段５に用いられるロードセル９は圧縮型のものが選択される。 The connecting portion 11 is joined to the weight acquiring means 5 at the lower end thereof, and the weight of the mounting portion 10 composed of the object to be dried 100, the turntable 25, the connecting portion 11, etc. is heated and dried while being heat-dried. It can be measured at all times. As the weight acquisition means 5, for example, a load cell or the like that converts the weight into an electric signal is used. Normally, a strain gauge that measures the amount of deformation of the object to be measured is used for the load cell, but when the temperature changes, strain is generated in the connection portion 11 and the strain gauge due to thermal expansion and contraction, and accurate weight measurement is performed. May cause problems. In order to prevent this, in the present embodiment, the weight acquisition means 5 is arranged outside the drying furnace 2. Further, it is air-cooled as described later so as not to be affected by the heat of the drying furnace 2.
The drying furnace 2 is installed so as to be supported by the support base 26, and the weight acquisition means 5 is fixed to the support base 26 so that the weight to be measured can be received. In the case of such a configuration, a compression type load cell 9 used for the weight acquisition means 5 is selected.

重量取得手段５は、ターンテーブル２５、接続部１１等の被乾燥物１００を載置する載置部１０等の重量を被乾燥物１００の重量と合わせて測定する。したがって、予め被乾燥物１００を含まない載置部１０等の重量を測定しておき、重量の測定結果から載置部１０等の重量を差し引いて、被乾燥物１００の重量データを算出する。重量取得手段５は、乾燥炉２の運転を開始する前から常に被乾燥物１００の重量を算出しており、制御手段７の指示に基づいて、算出した被乾燥物１００の重量データを制御手段７に伝送する。 The weight acquisition means 5 measures the weight of the mounting portion 10 or the like on which the object to be dried 100 such as the turntable 25 and the connecting portion 11 is placed together with the weight of the object to be dried 100. Therefore, the weight of the mounting portion 10 or the like that does not include the object to be dried 100 is measured in advance, and the weight of the mounting portion 10 or the like is subtracted from the weight measurement result to calculate the weight data of the object to be dried 100. The weight acquisition means 5 always calculates the weight of the object to be dried 100 even before the operation of the drying furnace 2 is started, and the calculated weight data of the object to be dried 100 is used as the control means based on the instruction of the control means 7. It is transmitted to 7.

図２は、本発明の実施形態に係る乾燥装置１の軸受部１５の拡大断面図である。
図２を用いて、本発明の実施形態に係る乾燥装置１の軸受部１５について説明する。
軸受部１５は、軸受１６ａ，１６ｂと軸受ボス１７により構成されている。軸受ボス１７は乾燥炉２の底壁５１に接合されており、軸受ボス１７に設けられた貫通孔１７ａに上下から軸受１６ａ，１６ｂが圧入されている。軸受１６ａ，１６ｂは本実施形態においては、滑り軸受で構成されている。
また、軸受ボス１７にはその側面の高さ方向の中央付近に気体噴射孔１８ａ、１８ｂが設けられており、図示しない気体噴射手段から圧縮気体が吹き込まれる。軸受１６ａ，１６ｂに滑り軸受を使用することで丸軸部１２の外径と軸受１６ａ，１６ｂの内径にわずかな隙間が生じるため、気体噴射孔１８ａ、１８ｂから噴入された圧縮気体は、内部で接続部１１の丸軸部１２に当たり、上下に向きを変えて、この隙間を通って流れていく。この圧縮気体の働きにより滑り軸受を用いた場合の軸受１６ａ，１６ｂと丸軸部１２とに生じる摩擦が軽減され、被乾燥物１００の重量を測定する場合のばらつきを抑制し、より正確な重量測定を可能にする。また、ターンテーブル２５を回転させるための負荷が小さくなりモータ２１の出力を抑えることが可能となる。これにより、モータ２１の小型化や省エネルギーを図ることができる。 FIG. 2 is an enlarged cross-sectional view of the bearing portion 15 of the drying device 1 according to the embodiment of the present invention.
The bearing portion 15 of the drying device 1 according to the embodiment of the present invention will be described with reference to FIG.
The bearing portion 15 is composed of bearings 16a and 16b and a bearing boss 17. The bearing boss 17 is joined to the bottom wall 51 of the drying furnace 2, and the bearings 16a and 16b are press-fitted into the through holes 17a provided in the bearing boss 17 from above and below. In this embodiment, the bearings 16a and 16b are composed of slide bearings.
Further, the bearing boss 17 is provided with gas injection holes 18a and 18b near the center of the side surface in the height direction, and compressed gas is blown from a gas injection means (not shown). Since a slide bearing is used for the bearings 16a and 16b, a slight gap is created between the outer diameter of the round shaft portion 12 and the inner diameter of the bearings 16a and 16b, so that the compressed gas injected from the gas injection holes 18a and 18b is inside. It hits the round shaft portion 12 of the connecting portion 11 and turns up and down, and flows through this gap. Due to the action of this compressed gas, the friction generated between the bearings 16a and 16b and the round shaft portion 12 when the slide bearing is used is reduced, the variation when measuring the weight of the object to be dried 100 is suppressed, and the weight is more accurate. Enables measurement. Further, the load for rotating the turntable 25 is reduced, and the output of the motor 21 can be suppressed. As a result, the motor 21 can be miniaturized and energy can be saved.

図２において、丸軸部１２の表面を通り上昇する圧縮気体は、底壁５１に設けられた孔５１ａを通過して乾燥室８に封入される。この圧縮気体の流れにより、乾燥室８の加熱された空気が乾燥室８から外部に漏れるのを防止し、乾燥室８の温度低下やエネルギーのロスを抑えることが可能となる。
一方、丸軸部１２の表面を通り下降する圧縮気体は、重量取得手段５のロードセル９を冷却し、ロードセル９に対する乾燥炉２からの熱の影響を抑制して、正確な重量測定を可能とする効果がある。 In FIG. 2, the compressed gas rising through the surface of the round shaft portion 12 passes through the hole 51a provided in the bottom wall 51 and is sealed in the drying chamber 8. The flow of the compressed gas prevents the heated air in the drying chamber 8 from leaking from the drying chamber 8 to the outside, and makes it possible to suppress a temperature drop and energy loss in the drying chamber 8.
On the other hand, the compressed gas descending through the surface of the round shaft portion 12 cools the load cell 9 of the weight acquisition means 5, suppresses the influence of heat from the drying furnace 2 on the load cell 9, and enables accurate weight measurement. Has the effect of

図３は、本発明の実施形態に係る別の乾燥装置１の概略断面図である。
図３を用いて、本発明の実施形態に係る別の乾燥装置１について説明する。
図１及び図２で示す乾燥装置１は、支持台２６に乾燥炉２を載置して支持し、乾燥室８の中でターンテーブル２５に載置した被乾燥物１００を回転しながら加熱・乾燥するものであった。
これに対して、図３で示す乾燥装置１は、乾燥炉２が設置面に設置され、乾燥炉２の上部に支持部２８が設けられている。支持部２８から吊り部１４、重量取得手段５、接続部１１が懸架され、接続部１１の下端部が連結部４２を介して吊りカゴ４１と連結されている。吊りカゴ４１は、連結部４２に天井板４１ｄ、４１ｅが連結され、更に、側板４１ｃ、４１ｄが連結され、下部に底板４１ａが設けられており、全体で一つの容器を構成している。底板４１ａには被乾燥物１００が収納された搬送カゴ４４が載置されている。すなわち、吊りカゴ４１が被乾燥物１００を載置する載置部１０の主要構成要素になっている。 FIG. 3 is a schematic cross-sectional view of another drying apparatus 1 according to the embodiment of the present invention.
Another drying apparatus 1 according to the embodiment of the present invention will be described with reference to FIG.
In the drying device 1 shown in FIGS. 1 and 2, the drying furnace 2 is placed and supported on the support base 26, and the object to be dried 100 placed on the turntable 25 is heated while rotating in the drying chamber 8. It was to dry.
On the other hand, in the drying apparatus 1 shown in FIG. 3, the drying furnace 2 is installed on the installation surface, and the support portion 28 is provided on the upper part of the drying furnace 2. The suspension portion 14, the weight acquisition means 5, and the connection portion 11 are suspended from the support portion 28, and the lower end portion of the connection portion 11 is connected to the suspension basket 41 via the connection portion 42. In the hanging basket 41, ceiling plates 41d and 41e are connected to the connecting portion 42, side plates 41c and 41d are further connected, and a bottom plate 41a is provided at the lower portion, thereby forming one container as a whole. A transport basket 44 containing the object to be dried 100 is placed on the bottom plate 41a. That is, the hanging basket 41 is a main component of the mounting portion 10 on which the object to be dried 100 is placed.

搬送カゴ４４は、例えば、台車４５と、台車４５の上に固定された格子状のカゴ４６とにより構成され、カゴ４６に被乾燥物１００が収容される。被乾燥物１００が収容された搬送カゴ４４を吊りカゴ４１の底板４１ａに載置することで、被乾燥物１００を吊りカゴ４１に収容することができる。 The transport basket 44 is composed of, for example, a carriage 45 and a grid-like basket 46 fixed on the carriage 45, and the basket 46 accommodates the object to be dried 100. By placing the transport basket 44 containing the object to be dried 100 on the bottom plate 41a of the suspension basket 41, the object to be dried 100 can be accommodated in the suspension basket 41.

なお、吊りカゴ４１は、搬送カゴ４４を介さずに被乾燥物１００を直接収容してもよい。また、搬送カゴ４４を吊りカゴ４１として用いてもよい。また、乾燥室８に吊りカゴ４１を設けることは必須ではなく、乾燥室８に搬送カゴ４４を直接収容してもよい。 The hanging basket 41 may directly accommodate the object to be dried 100 without going through the transport basket 44. Further, the transport basket 44 may be used as the suspension basket 41. Further, it is not essential to provide the hanging basket 41 in the drying chamber 8, and the transport basket 44 may be directly housed in the drying chamber 8.

吊りカゴ４１は、載置した被乾燥物１００を熱風等で加熱・乾燥するため、天井板４１ｄ、４１ｅ、側板４１ｃ、４１ｄ、底板４１ａは、適宜穴が設けられたり、格子状に形成されたりする等、熱風が効率よく通過できる構造になっている。
また、本実施形態の乾燥装置１では、加熱手段３としてマイクロ波の発信器３ｂが用いられることもあるが、吊りカゴ４１は、マイクロ波が効率よく被乾燥物１００を加熱するように形成されている。
なお、熱風やマイクロ波ではなく、赤外線加熱手段、高周波加熱手段、蒸気発生装置等で加熱する場合には、投入容器４１は各加熱手段３に適した構造や穴の配置等が選択される。 Since the hanging basket 41 heats and dries the placed object 100 to be dried with hot air or the like, the ceiling plates 41d and 41e, the side plates 41c and 41d, and the bottom plate 41a are appropriately provided with holes or formed in a grid pattern. It has a structure that allows hot air to pass through efficiently.
Further, in the drying apparatus 1 of the present embodiment, the microwave transmitter 3b may be used as the heating means 3, but the hanging basket 41 is formed so that the microwave efficiently heats the object to be dried 100. ing.
When heating is performed by an infrared heating means, a high frequency heating means, a steam generator, or the like instead of hot air or microwaves, the structure and hole arrangement suitable for each heating means 3 are selected for the charging container 41.

乾燥炉２は、加熱・乾燥する内部空間である乾燥室８を有している。乾燥炉２の側壁５２には、加熱手段３として、例えば、電気ヒータを熱源とする熱風発生装置３ａが配置されている。熱風発生装置３ａには、生成した熱風を乾燥室８に送風する送風管３５が接続されており、乾燥炉２に設けられた送風口３０から乾燥炉２の中に熱風を送風する。送風管３５及び送風口３０は、乾燥炉２の中の被乾燥物１００に向けて熱風を送風できる位置に配置されている。 The drying furnace 2 has a drying chamber 8 which is an internal space for heating and drying. On the side wall 52 of the drying furnace 2, for example, a hot air generator 3a using an electric heater as a heat source is arranged as the heating means 3. A blower pipe 35 for blowing the generated hot air to the drying chamber 8 is connected to the hot air generator 3a, and the hot air is blown into the drying furnace 2 from the air outlet 30 provided in the drying furnace 2. The blower pipe 35 and the blower port 30 are arranged at positions where hot air can be blown toward the object to be dried 100 in the drying furnace 2.

乾燥炉２の側壁５３には吸気口３１が設けられており、吸気管３２が接続されている。吸気管３２は、吸気口３１の反対側が熱風発生装置３ａに接続されている。このように構成することで、乾燥室８の中に送られた熱風は被乾燥物１００を加熱・乾燥した後、強制的に吸気管３２により回収されて熱風発生装置３ａに戻る。そして、熱風発生装置３ａによって所定の温度の熱風に加熱され、再び送風管３５を通って送風口３０から乾燥炉２の中に送風される。このように、本実施形態の乾燥装置１は、熱風を熱風発生装置３ａと乾燥室８との間で循環するようにして、熱効率を高くしている。 An intake port 31 is provided on the side wall 53 of the drying furnace 2, and an intake pipe 32 is connected to the side wall 53. The side of the intake pipe 32 opposite to the intake port 31 is connected to the hot air generator 3a. With this configuration, the hot air sent into the drying chamber 8 is forcibly recovered by the intake pipe 32 after heating and drying the object to be dried 100, and returns to the hot air generator 3a. Then, it is heated to hot air at a predetermined temperature by the hot air generator 3a, and is again blown into the drying furnace 2 from the air outlet 30 through the air pipe 35. As described above, in the drying device 1 of the present embodiment, the hot air is circulated between the hot air generator 3a and the drying chamber 8 to improve the thermal efficiency.

本実施形態に係る乾燥装置１は、加熱手段３として熱風発生装置３ａの他に発信器３ｂが設けられている。発信器３ｂは、導波管３６により側壁５２に設けられた入射口３３に接続されている。発信器３ｂは、マイクロ波を発生し、発信器３ｂが発生したマイクロ波は、入射口３３から乾燥室８に入射されて被乾燥物１００を加熱・乾燥する。
マイクロ波加熱装置においては、装置から外部に漏洩するマイクロ波の限度値が安全基準として規定されている。この安全規格を遵守するために、乾燥装置１は、図示しないマイクロ波の漏洩防止構造を有している。マイクロ波はわずかな隙間から外部に漏洩するため、これらの隙間を無くすとともに、どうしても必要な隙間の近辺にはチョークフィルター等のフィルターを設けて、漏洩するマイクロ波を減衰させるようにしている。 The drying device 1 according to the present embodiment is provided with a transmitter 3b in addition to the hot air generator 3a as the heating means 3. The transmitter 3b is connected to an incident port 33 provided on the side wall 52 by a waveguide 36. The transmitter 3b generates microwaves, and the microwaves generated by the transmitter 3b are incident on the drying chamber 8 from the incident port 33 to heat and dry the object to be dried 100.
In the microwave heating device, the limit value of the microwave leaking from the device to the outside is defined as a safety standard. In order to comply with this safety standard, the drying device 1 has a microwave leakage prevention structure (not shown). Since microwaves leak to the outside through a small gap, these gaps are eliminated and a filter such as a choke filter is provided in the vicinity of the gaps that are absolutely necessary to attenuate the leaked microwaves.

乾燥装置１に使用する加熱手段３は、熱風発生装置３ａや発信器３ｂに限定されるものではなく、例えば、赤外線加熱装置、高周波加熱装置、蒸気発生装置等も同様に使用することができる。これらは、被乾燥物１００の特性に合わせて適宜選択される。 The heating means 3 used in the drying device 1 is not limited to the hot air generator 3a and the transmitter 3b, and for example, an infrared heating device, a high frequency heating device, a steam generator, and the like can also be used in the same manner. These are appropriately selected according to the characteristics of the object to be dried 100.

乾燥室８の中には、被乾燥物１００を収納した搬送カゴ４４が載置された吊りカゴ４１が、支持部２８から吊り部１４、重量取得手段５及び接続部１１によって連結部４２の部分で懸架された状態で設けられている。 In the drying chamber 8, a hanging basket 41 on which a transport basket 44 containing the object to be dried 100 is placed is a portion of the connecting portion 42 from the supporting portion 28 to the hanging portion 14, the weight acquisition means 5, and the connecting portion 11. It is installed in a suspended state.

吊り部１４と接続部１１の間に重量取得手段５が設けられ、被乾燥物１００を載置した搬送カゴ４４と合わせて、吊りカゴ４１、接続部１１等から構成される載置部１０等の重量を、加熱・乾燥処理しながら、常時測定することができる。重量取得手段５は、重量を電気信号に変換するロードセル等が用いられる。ロードセルには通常、被測定物の変形量を測定するひずみゲージが用いられているが、温度が変わると熱膨張により接続部１１やひずみゲージにひずみが発生してしまい正確な重量測定に支障が生ずる場合がある。これを防止するために、本実施形態においては、重量取得手段５は乾燥炉２の外部に配置されている。更に、乾燥炉２の熱の影響を受けないように、後述するように空冷されている。
なお、本実施形態において、重量取得手段５は吊り部１４と接続部１１によって両側に引っ張られるように力かかるように構成されており、このような構成の場合には、引っ張り型のロードセル９が選択される。 A weight acquisition means 5 is provided between the hanging portion 14 and the connecting portion 11, and the mounting portion 10 and the like composed of the hanging basket 41, the connecting portion 11, etc., together with the transport basket 44 on which the object to be dried 100 is placed, etc. Can be constantly measured while heating and drying. As the weight acquisition means 5, a load cell or the like that converts the weight into an electric signal is used. Normally, a strain gauge that measures the amount of deformation of the object to be measured is used for the load cell, but when the temperature changes, strain is generated in the connection portion 11 and the strain gauge due to thermal expansion, which hinders accurate weight measurement. May occur. In order to prevent this, in the present embodiment, the weight acquisition means 5 is arranged outside the drying furnace 2. Further, it is air-cooled as described later so as not to be affected by the heat of the drying furnace 2.
In the present embodiment, the weight acquisition means 5 is configured to be pulled on both sides by the suspending portion 14 and the connecting portion 11, and in such a configuration, the pull-type load cell 9 is used. Be selected.

重量取得手段５は、吊りカゴ４１、接続部１１等の被乾燥物１００を載置する載置部１０等の重量を被乾燥物１００の重量と合わせて測定する。したがって、予め被乾燥物１００を含まない載置部１０等の重量を測定しておき、重量の測定結果から載置部１０等の重量を差し引いて、被乾燥物１００の重量データを算出する。重量取得手段５は、乾燥炉２の運転を開始する前から常に被乾燥物１００の重量を算出しており、制御手段７の指示に基づいて、算出した被乾燥物１００の重量データを制御手段７に伝送する。
なお、搬送カゴ４４を使用する場合には、搬送カゴ４４の重量を予め測定しておき、被乾燥物１００を載置する載置部１０等の重量の測定結果から搬送カゴ４４の重量も控除することになる。 The weight acquisition means 5 measures the weight of the mounting portion 10 or the like on which the object to be dried 100 such as the hanging basket 41 and the connecting portion 11 is placed together with the weight of the object to be dried 100. Therefore, the weight of the mounting portion 10 or the like that does not include the object to be dried 100 is measured in advance, and the weight of the mounting portion 10 or the like is subtracted from the weight measurement result to calculate the weight data of the object to be dried 100. The weight acquisition means 5 always calculates the weight of the object to be dried 100 even before the operation of the drying furnace 2 is started, and the calculated weight data of the object to be dried 100 is used as the control means based on the instruction of the control means 7. It is transmitted to 7.
When using the transport basket 44, the weight of the transport basket 44 is measured in advance, and the weight of the transport basket 44 is also deducted from the measurement result of the weight of the mounting portion 10 or the like on which the object to be dried 100 is placed. Will be done.

図４は、本発明の別の実施形態に係る乾燥装置１の軸受部１５の拡大断面図である。
図４を用いて、本発明の実施形態に係る乾燥装置１の軸受部１５について説明する。
軸受部１５は、軸受１６ａ，１６ｂと軸受ボス１７により構成されている。軸受ボス１７は乾燥炉２の天井壁５４に接合されており、軸受ボス１７に設けられた貫通孔１７ａに上下から軸受１６ａ，１６ｂが圧入されている。軸受１６ａ，１６ｂは本実施形態においては、滑り軸受で構成されている。
また、軸受ボス１７にはその側面の高さ方向の中央付近に気体噴射孔１８ａ、１８ｂが設けられており、図示しない気体噴射手段から圧縮気体が吹き込まれる。軸受１６ａ，１６ｂに滑り軸受を使用することで丸軸部１２の外径と軸受１６ａ，１６ｂの内径にわずかな隙間があるため、気体噴射孔１８ａ、１８ｂから噴入された圧縮気体は、内部で接続部１１の丸軸部１２に当たり、上下に向きを変えて、この隙間を通って流れていく。この圧縮気体の働きにより滑り軸受を用いた場合の軸受１６ａ，１６ｂと丸軸部１２とに生じる摩擦が軽減され、吊りカゴ４１の重量を測定する場合のばらつきを抑制し、より正確な重量測定を可能にする。 FIG. 4 is an enlarged cross-sectional view of the bearing portion 15 of the drying device 1 according to another embodiment of the present invention.
The bearing portion 15 of the drying device 1 according to the embodiment of the present invention will be described with reference to FIG.
The bearing portion 15 is composed of bearings 16a and 16b and a bearing boss 17. The bearing boss 17 is joined to the ceiling wall 54 of the drying furnace 2, and the bearings 16a and 16b are press-fitted into the through holes 17a provided in the bearing boss 17 from above and below. In this embodiment, the bearings 16a and 16b are composed of slide bearings.
Further, the bearing boss 17 is provided with gas injection holes 18a and 18b near the center of the side surface in the height direction, and compressed gas is blown from a gas injection means (not shown). By using plain bearings for the bearings 16a and 16b, there is a slight gap between the outer diameter of the round shaft portion 12 and the inner diameter of the bearings 16a and 16b, so that the compressed gas injected from the gas injection holes 18a and 18b is inside. It hits the round shaft portion 12 of the connecting portion 11 and turns up and down, and flows through this gap. By the action of this compressed gas, the friction generated between the bearings 16a and 16b and the round shaft portion 12 when the slide bearing is used is reduced, the variation when measuring the weight of the suspension basket 41 is suppressed, and the weight measurement is more accurate. To enable.

図４において、丸軸部１２の表面を通り下降する圧縮気体は、天井壁５４に設けられた孔５４ａを通過して乾燥室８に封入される。この圧縮気体の流れにより、乾燥室８の加熱された空気が乾燥室８から外部に漏れるのを防止し、乾燥室８の温度低下やエネルギーのロスを抑えることが可能となる。
一方、丸軸部１２の表面を通り上昇する圧縮気体は、重量取得手段５のロードセル９を冷却し、ロードセル９に対する乾燥炉２からの熱の影響を抑制して、正確な重量測定を可能とする効果がある。
なお、本実施形態において、接続部１１は丸軸部１２を有する構成となっているがこれに限定されるものではなく、接続部１１の断面形状が四角形その他の多角形であって、これを軸受で支持するようにして、丸軸部１２に相当する要素がない構成あってもよい。 In FIG. 4, the compressed gas descending through the surface of the round shaft portion 12 passes through the hole 54a provided in the ceiling wall 54 and is sealed in the drying chamber 8. The flow of the compressed gas prevents the heated air in the drying chamber 8 from leaking from the drying chamber 8 to the outside, and makes it possible to suppress a temperature drop and energy loss in the drying chamber 8.
On the other hand, the compressed gas rising through the surface of the round shaft portion 12 cools the load cell 9 of the weight acquisition means 5, suppresses the influence of heat from the drying furnace 2 on the load cell 9, and enables accurate weight measurement. Has the effect of
In the present embodiment, the connecting portion 11 has a structure having a round shaft portion 12, but the present invention is not limited to this, and the cross-sectional shape of the connecting portion 11 is a quadrangle or other polygon. There may be a configuration in which the element corresponding to the round shaft portion 12 is not provided so as to be supported by a bearing.

図１から図４で説明したとおり、本実施形態は、載置部１０を、図１で示すように設置面に置かれた支持台２６から回転可能に構成されたターンテーブル２５とする実施形態、図３で示すように乾燥炉２の上部に接合された支持部２８から回転可能に懸架された吊りカゴ４１とする実施形態がある。
これらは、乾燥装置１が設置される場所の状況や被乾燥物１００の種類等に応じて適宜選択される。 As described with reference to FIGS. 1 to 4, the present embodiment is an embodiment in which the mounting portion 10 is a turntable 25 rotatably configured from a support base 26 placed on the installation surface as shown in FIG. As shown in FIG. 3, there is an embodiment in which the suspension basket 41 is rotatably suspended from the support portion 28 joined to the upper part of the drying furnace 2.
These are appropriately selected according to the situation of the place where the drying device 1 is installed, the type of the object to be dried 100, and the like.

図５は、制御手段７の内部構成を示す機能ブロック図である。
制御手段７は、ＣＰＵ７５、記憶手段７４を有するコンピュータを備えて構成されている。制御手段７は、重量取得手段５の測定重量及び温度測定手段６の測定温度に基づいて乾燥炉２の運転を制御する。制御手段７は、記憶手段７４に記憶された制御プログラムがＣＰＵ７５の指示により実行されることで機能する。 FIG. 5 is a functional block diagram showing the internal configuration of the control means 7.
The control means 7 includes a computer having a CPU 75 and a storage means 74. The control means 7 controls the operation of the drying furnace 2 based on the measured weight of the weight acquiring means 5 and the measured temperature of the temperature measuring means 6. The control means 7 functions by executing the control program stored in the storage means 74 according to the instruction of the CPU 75.

制御手段７は、ＣＰＵ７５が制御プログラムを実行することにより、データ取得手段７１、判定手段７２及び運転制御手段７３として機能する。 The control means 7 functions as a data acquisition means 71, a determination means 72, and an operation control means 73 when the CPU 75 executes a control program.

データ取得手段７１は、ＣＰＵ７５からの指示に基づき、所定時間毎に重量取得手段５に出力の指示をし、ロードセル９で測定された被乾燥物１００の重量データをロードセル９から電気信号として取得する。
また、データ取得手段７１は、ＣＰＵ７５からの指示に基づき、所定時間毎に温度測定手段６に出力指示を出し、温度測定手段６で測定された被乾燥物１００の温度データを温度測定手段６から電気信号として取得する。
データ取得手段７１は、取得した被乾燥物１００の重量データ及び温度データをＣＰＵ７５に伝送し、ＣＰＵ７５は受け取ったデータを記憶手段７４に伝送し、記憶手段７４は被乾燥物１００の重量データ及び温度データを時間情報等の付帯情報と共に保存する。 Based on the instruction from the CPU 75, the data acquisition means 71 instructs the weight acquisition means 5 to output at predetermined time intervals, and acquires the weight data of the object to be dried 100 measured by the load cell 9 as an electric signal from the load cell 9. ..
Further, the data acquisition means 71 issues an output instruction to the temperature measuring means 6 at predetermined time intervals based on the instruction from the CPU 75, and the temperature data of the object to be dried 100 measured by the temperature measuring means 6 is obtained from the temperature measuring means 6. Obtained as an electrical signal.
The data acquisition means 71 transmits the acquired weight data and temperature data of the object to be dried 100 to the CPU 75, the CPU 75 transmits the received data to the storage means 74, and the storage means 74 transmits the weight data and temperature of the object to be dried 100. Save the data together with incidental information such as time information.

ＣＰＵ７５は、記憶手段７４に保存された被乾燥物１００の重量データ及び温度データを判定手段７２に伝送するとともに、判定手段７２に所定の演算をすることを指示する。
判定手段７２は、ＣＰＵ７５の指示に基づき、現時点で入力された被乾燥物１００の重量である現在重量と、過去に入力された被乾燥物１００の重量である先行重量との重量差を算出し、算出した重量差が閾値以下であるか否かの判定を行う。 The CPU 75 transmits the weight data and the temperature data of the object to be dried 100 stored in the storage means 74 to the determination means 72, and instructs the determination means 72 to perform a predetermined calculation.
Based on the instruction of the CPU 75, the determination means 72 calculates the weight difference between the current weight, which is the weight of the object to be dried 100, which is input at the present time, and the preceding weight, which is the weight of the object to be dried 100, which is input in the past. , It is determined whether or not the calculated weight difference is equal to or less than the threshold value.

図６は、本発明の実施形態に係る乾燥装置１による被乾燥物１００の加熱処理における被乾燥物１００の重量及び温度の時間的変化を示すグラフである。
図６に示すように、被乾燥物１００が加熱されて昇温すると、被乾燥物１００に含浸された含浸液が蒸発することで、被乾燥物１００の重量は徐々に減少する。そして、含浸液の蒸発が進んで被乾燥物１００が乾燥してくると、被乾燥物１００の重量はほとんど変化しなくなる。乾燥装置１の制御手段７は、このような被乾燥物１００の重量の変化に基づいて、被乾燥物１００が乾燥したタイミングで乾燥炉２の運転を自動的に停止する制御を行う。 FIG. 6 is a graph showing changes over time in the weight and temperature of the object to be dried 100 in the heat treatment of the object to be dried 100 by the drying apparatus 1 according to the embodiment of the present invention.
As shown in FIG. 6, when the object to be dried 100 is heated and the temperature rises, the impregnating liquid impregnated in the object to be dried 100 evaporates, so that the weight of the object to be dried 100 gradually decreases. Then, when the impregnating liquid evaporates and the object to be dried 100 dries, the weight of the object to be dried 100 hardly changes. The control means 7 of the drying device 1 controls to automatically stop the operation of the drying furnace 2 at the timing when the object to be dried 100 is dried based on such a change in the weight of the object to be dried 100.

本実施形態の判定手段７２は、先行重量として、現時点の直前に入力された被乾燥物１００の重量を用いる。したがって、本実施形態の判定手段７２は、現時点で取得した被乾燥物１００の重量Ｍ２である現在重量と、現時点の直前に取得した被乾燥物１００の重量Ｍ１である先行重量との重量差ΔＭ（Ｍ１−Ｍ２）が閾値以下であるか否かの判定を行う。判定手段７２は、判定結果を運転制御手段７３に伝送する。 The determination means 72 of the present embodiment uses the weight of the object to be dried 100 input immediately before the present time as the preceding weight. Therefore, the determination means 72 of the present embodiment has a weight difference ΔM between the current weight, which is the weight M2 of the object to be dried 100 acquired at the present time, and the preceding weight, which is the weight M1 of the object to be dried 100 acquired immediately before the present time. It is determined whether or not (M1-M2) is equal to or less than the threshold value. The determination means 72 transmits the determination result to the operation control means 73.

判定手段７２は、先行重量として、重量Ｍ１に代えて、加熱前に取得した被乾燥物１００の初期重量Ｍ０を用いることができる。この場合、判定手段７２は、重量差ΔＭ（０）（Ｍ０−Ｍ２）が閾値以下であるか否かの判定を行う。
また、判定手段７２は、初期重量Ｍ０、重量Ｍ１及び重量Ｍ２を用いて、重量差ΔＭ（ΔＴ）（Ｍ１−Ｍ２）及び重量差ΔＭ（０）（Ｍ０−Ｍ２）の両方又は一方が閾値以下であるか否かの判定を行うこともできる。
以下、重量差ΔＭ（ΔＴ）と重量差ΔＭ（０）の両方を含めて単にΔＭという。 As the preceding weight, the determination means 72 can use the initial weight M0 of the object to be dried 100 acquired before heating instead of the weight M1. In this case, the determination means 72 determines whether or not the weight difference ΔM (0) (M0-M2) is equal to or less than the threshold value.
Further, the determination means 72 uses the initial weight M0, the weight M1 and the weight M2, and both or one of the weight difference ΔM (ΔT) (M1-M2) and the weight difference ΔM (0) (M0-M2) is equal to or less than the threshold value. It is also possible to determine whether or not it is.
Hereinafter, both the weight difference ΔM (ΔT) and the weight difference ΔM (0) are collectively referred to as ΔM.

運転制御手段７３は、判定手段７２の判定結果に基づいて、乾燥炉２の運転を制御する。
まず、制御手段７に設けられた乾燥炉２の操作手段７６から運転開始指示が入力されると、運転制御手段７３は、乾燥炉２の運転を開始する。そして、判定手段７２において、重量差ΔＭが閾値以下でないと判定された場合には、その判定結果に基づいて、運転制御手段７３は、乾燥炉２の運転を継続する。一方、判定手段７２において、重量差ΔＭが閾値以下であると判定された場合には、運転制御手段７３は、乾燥炉２の運転を停止する。 The operation control means 73 controls the operation of the drying furnace 2 based on the determination result of the determination means 72.
First, when an operation start instruction is input from the operation means 76 of the drying furnace 2 provided in the control means 7, the operation control means 73 starts the operation of the drying furnace 2. Then, when the determination means 72 determines that the weight difference ΔM is not equal to or less than the threshold value, the operation control means 73 continues the operation of the drying furnace 2 based on the determination result. On the other hand, when the determination means 72 determines that the weight difference ΔM is equal to or less than the threshold value, the operation control means 73 stops the operation of the drying furnace 2.

図６に示すように、乾燥炉２の運転を開始した時間Ｔ０から、被乾燥物１００が昇温して温度Ｈ１に達する時間Ｔ１までの間、被乾燥物１００が含んだ液体は蒸発しないので、被乾燥物１００の重量はほとんど変化しない。このため、時間Ｔ１までの間に、判定手段７２において重量差ΔＭに関する判定が行われると、重量差ΔＭが閾値より小さいと判定され、被乾燥物１００が乾燥していない状態であるにもかかわらず、運転制御手段７３が乾燥炉２の運転を停止してしまうという問題が生じる可能性がある。 As shown in FIG. 6, the liquid contained in the object to be dried 100 does not evaporate from the time T0 when the operation of the drying furnace 2 is started to the time T1 when the temperature of the object to be dried 100 rises and reaches the temperature H1. , The weight of the object to be dried 100 hardly changes. Therefore, if the determination means 72 determines the weight difference ΔM before the time T1, it is determined that the weight difference ΔM is smaller than the threshold value, and the object to be dried 100 is not dried. However, there is a possibility that the operation control means 73 stops the operation of the drying furnace 2.

また、加熱により被乾燥物１００から液体が蒸発している間は、その蒸発熱に影響で被乾燥物１００の温度は殆ど上昇しないので、被乾燥物１００は温度Ｈ１より高い温度Ｈ２近辺で維持される。更に加熱を継続することで被乾燥物１００の乾燥が進み、液体の蒸発量が減ってくると、蒸発熱の影響が少なくなるため被乾燥物１００は温度Ｈ２から再び上昇する。したがって、再度の温度上昇時に判定手段７２が重量差ΔＭに関する判定を行えば、重量差ΔＭが閾値以下であると判定され、被乾燥物１００が乾燥した状態で運転制御手段７３が乾燥炉２の運転を停止することになる。 Further, while the liquid is evaporating from the object to be dried 100 by heating, the temperature of the object to be dried 100 hardly rises due to the heat of vaporization, so that the object to be dried 100 is maintained at a temperature H2 higher than the temperature H1. Will be done. Further, by continuing heating, the drying of the object to be dried 100 progresses, and when the amount of evaporation of the liquid decreases, the influence of the heat of vaporization decreases, so that the object to be dried 100 rises again from the temperature H2. Therefore, if the determination means 72 determines the weight difference ΔM when the temperature rises again, it is determined that the weight difference ΔM is equal to or less than the threshold value, and the operation control means 73 of the drying furnace 2 is in a state where the object to be dried 100 is dried. The operation will be stopped.

このような背景から、判定手段７２は、乾燥炉２の運転を開始した時間Ｔ０から被乾燥物１００が温度Ｈ１に達する時間Ｔ１までの一定時間が経過するまでは重量差ΔＭに関する判定は行わないで、時間Ｔ１が経過した後であって、被乾燥物１００の現時点の温度が閾値を超えたことを以って、この判定を行う。
温度に関する閾値は、液体の蒸発が盛んに行われて温度がほぼ一定となる温度Ｈ２ではなく、これより少し高くなることで、乾燥が所定の状態まで進んだと判断できるため、温度Ｈ２よりも少し高い温度Ｈ３に設定されている。 Against this background, the determination means 72 does not determine the weight difference ΔM until a certain time elapses from the time T0 when the operation of the drying furnace 2 is started to the time T1 when the object 100 to be dried reaches the temperature H1. Then, after the time T1 has elapsed, this determination is made when the current temperature of the object to be dried 100 exceeds the threshold value.
The temperature threshold is higher than the temperature H2 because it can be judged that the drying has progressed to a predetermined state by slightly higher than the temperature H2 at which the liquid evaporates vigorously and the temperature becomes almost constant. The temperature is set to a little higher H3.

なお、判定手段７２は、温度Ｈ２に相当するように、一定時間温度の変化が一定範囲内にあることを検出した後、その温度（Ｈ２）より一定温度上昇したことを以って、重量差ΔＭに関する判定を行うこともできる。すなわち、加熱をある程度進めて被乾燥物１００の温度が一定範囲内に留まることは、被乾燥物１００において液体の蒸発が盛んに行われていることを示しており、これを過ぎて一定温度上昇したことは、蒸発がほぼ完了したと判断できるためである。この一定温度を過ぎてしまうと、過剰加熱になるおそれがあり、これを防止する観点からもこのような制御方法は有効である。
また、このような温度に基づく制御に加熱時間の要素を組み合わせることも有効である。加熱時間と被乾燥物１００の乾燥状態の相関関係がわかっている場合には、一定時間加熱することで被乾燥物１００の乾燥がほぼ完了することが予想できる。このため、被乾燥物１００の温度と加熱時間のどちらか一方が所定の数値になった時点で、重量差ΔＭに関する判定を行うようにすることもできる。 In addition, the determination means 72 detects that the change in temperature for a certain period of time is within a certain range so as to correspond to the temperature H2, and then rises by a certain temperature from the temperature (H2), so that the weight difference It is also possible to make a determination regarding ΔM. That is, the fact that the temperature of the object to be dried 100 stays within a certain range after heating to some extent indicates that the liquid is actively evaporated in the object to be dried 100, and the temperature rises beyond this. This is because it can be judged that the evaporation is almost completed. If the temperature exceeds this constant temperature, overheating may occur, and such a control method is effective from the viewpoint of preventing this.
It is also effective to combine the heating time element with such temperature-based control. When the correlation between the heating time and the dry state of the object to be dried 100 is known, it can be expected that the drying of the object to be dried 100 is almost completed by heating for a certain period of time. Therefore, it is also possible to determine the weight difference ΔM when either the temperature of the object to be dried 100 or the heating time reaches a predetermined value.

図７は、本発明の実施形態に係る乾燥装置１による被乾燥物１００の加熱・乾燥処理を示すフローチャートである。
図７を用いて、制御手段７が実行する処理手順及び運転制御方法について説明する。 FIG. 7 is a flowchart showing a heating / drying treatment of the object to be dried 100 by the drying apparatus 1 according to the embodiment of the present invention.
The processing procedure and the operation control method executed by the control means 7 will be described with reference to FIG. 7.

制御手段７は、操作手段７６から乾燥炉２の動作開始指示が入力されるのを確認する（ステップＳ１）。 The control means 7 confirms that the operation start instruction of the drying furnace 2 is input from the operation means 76 (step S1).

制御手段７は、ＣＰＵ７５の指示に基づいてデータ取得手段７１に重量取得手段５から被乾燥物１００の加熱前の初期重量Ｍ０の取得を指示し、取得した初期重量Ｍ０を記憶手段７４に保存する（ステップＳ２）。 The control means 7 instructs the data acquisition means 71 to acquire the initial weight M0 of the object to be dried 100 before heating from the weight acquisition means 5 based on the instruction of the CPU 75, and stores the acquired initial weight M0 in the storage means 74. (Step S2).

乾燥炉２の運転を開始する（ステップＳ３）。 The operation of the drying furnace 2 is started (step S3).

制御手段７は、乾燥炉２の運転を開始した時点から一定時間の経過を確認する（ステップＳ４）。確認結果が「ＮＯ」である場合、さらに時間経過とその確認を繰り返す。 The control means 7 confirms the passage of a certain period of time from the time when the operation of the drying furnace 2 is started (step S4). If the confirmation result is "NO", the passage of time and the confirmation are repeated.

制御手段７は、ステップ４で「ＹＥＳ」の場合、温度測定手段６で測定された被乾燥物１００の温度を所定時間毎に取得する（ステップＳ５）。 If "YES" in step 4, the control means 7 acquires the temperature of the object to be dried 100 measured by the temperature measuring means 6 at predetermined time intervals (step S5).

制御手段７は、取得した被乾燥物１００の現時点の温度が温度閾値を超えたか否かを判断する（ステップＳ６）。ステップＳ６の判断結果が「ＮＯ」である場合、制御手段７はステップＳ５へ戻り、温度の取得を繰り返す。 The control means 7 determines whether or not the current temperature of the acquired object 100 to be dried exceeds the temperature threshold value (step S6). If the determination result in step S6 is "NO", the control means 7 returns to step S5 and repeats the acquisition of the temperature.

ステップＳ６の判断結果が「ＹＥＳ」である場合、制御手段７は、被乾燥物１００の重量を所定時間毎に取得する（ステップＳ７）。 When the determination result in step S6 is "YES", the control means 7 acquires the weight of the object to be dried 100 at predetermined time intervals (step S7).

制御手段７は、被乾燥物１００の現時点の重量Ｍ２（現在重量）とその直前に取得した重量Ｍ１（先行重量）との重量差ΔＭ（Ｍ１−Ｍ２）を算出し、算出した重量差ΔＭが閾値以下であるか否かを判定する（ステップＳ８）。ステップＳ８の判定結果が「ＮＯ」である場合、制御手段７はステップＳ７へ戻り、重量の取得を繰り返す。 The control means 7 calculates a weight difference ΔM (M1-M2) between the current weight M2 (current weight) of the object to be dried 100 and the weight M1 (preceding weight) acquired immediately before that, and the calculated weight difference ΔM is calculated. It is determined whether or not it is equal to or less than the threshold value (step S8). If the determination result in step S8 is "NO", the control means 7 returns to step S7 and repeats the acquisition of the weight.

制御手段７は、ステップＳ８の判定結果が「ＹＥＳ」である場合、乾燥炉２の運転を停止し（ステップＳ９）、被乾燥物１００の加熱・乾燥処理を終了する。 When the determination result in step S8 is "YES", the control means 7 stops the operation of the drying furnace 2 (step S9) and ends the heating / drying process of the object to be dried 100.

図７に示す被乾燥物１００の加熱・乾燥処理を示すフローチャートにおいて、ステップ５やステップ７はデータ取得ステップであり、ステップ８は判定ステップであり、ステップ９は運転制御ステップである。 In the flowchart showing the heating / drying process of the object to be dried 100 shown in FIG. 7, steps 5 and 7 are data acquisition steps, step 8 is a determination step, and step 9 is an operation control step.

なお、図７で示す被乾燥物１００の加熱・乾燥処理を示すフローチャートはひとつの例であり、これに限定されるものではない。例えば、ステップ２における被乾燥物１００の加熱前の初期重量Ｍ０の測定は必須ではなく、ステップ８における先行重量として現時点の直前に測定した重量である重量Ｍ１を用いることも可能である。また、ステップＳ６を温度と加熱時間のどちらか一方が所定の数値になった時点でステップＳ７に進むようにして、被乾燥物１００の重量を所定時間毎に取得し、更にステップＳ８において重量差ΔＭに関する判定を行うようにすることもできる。 The flowchart showing the heating / drying treatment of the object to be dried 100 shown in FIG. 7 is an example, and is not limited to this. For example, it is not essential to measure the initial weight M0 of the object to be dried 100 before heating in step 2, and it is also possible to use the weight M1 which is the weight measured immediately before the present time as the preceding weight in step 8. Further, in step S6, when either the temperature or the heating time reaches a predetermined value, the process proceeds to step S7 to acquire the weight of the object to be dried 100 at predetermined time intervals, and further, in step S8, regarding the weight difference ΔM. It is also possible to make a judgment.

図７に示す被乾燥物１００の加熱・乾燥処理を示すフローチャートでは、ステップＳ９において、乾燥炉２の運転を停止するように制御している。
これに対して、重量差ΔＭが閾値以下になった場合に、加熱手段３の出力を一定水準に下げることで、過剰な加熱・乾燥処理を抑制して被乾燥物１００の品質を維持し、エネルギーのロスを抑制するように制御することも可能である。
また、本実施形態において、加熱手段３として熱風発生装置３ａと発信器３ｂが設けられているが、重量差ΔＭが閾値以下になった場合に、熱風発生装置３ａの出力を下げるとともに、発信器３ｂの出力を停止し、弱い熱風のみで加熱し、マイクロ波による加熱をやめるような制御も可能である。このように、複数の加熱手段３を備え、これらの出力の水準を適宜調整することで、多様な被乾燥物１００に対して、最適な加熱サイクルを実行することができる。これにより、加熱手段３の過剰な出力を抑え、経済性と安全性の向上に寄与することができる。 In the flowchart showing the heating / drying treatment of the object to be dried 100 shown in FIG. 7, in step S9, the operation of the drying furnace 2 is controlled to be stopped.
On the other hand, when the weight difference ΔM becomes equal to or less than the threshold value, the output of the heating means 3 is lowered to a certain level to suppress excessive heating / drying treatment and maintain the quality of the object to be dried 100. It is also possible to control so as to suppress energy loss.
Further, in the present embodiment, the hot air generator 3a and the transmitter 3b are provided as the heating means 3, but when the weight difference ΔM becomes equal to or less than the threshold value, the output of the hot air generator 3a is lowered and the transmitter is used. It is also possible to stop the output of 3b, heat only with weak hot air, and stop heating with microwaves. As described above, by providing the plurality of heating means 3 and appropriately adjusting the level of these outputs, the optimum heating cycle can be executed for various objects to be dried 100. As a result, it is possible to suppress an excessive output of the heating means 3 and contribute to improvement of economy and safety.

本実施形態の乾燥装置１によれば、制御手段７は、現時点で重量取得手段５が測定した被乾燥物１００の重量である現在重量と、過去に重量取得手段５が測定した被乾燥物１００の重量である先行重量との重量差ΔＭが閾値以下であるか否かの判定を行い、重量差ΔＭが閾値以下である場合に、乾燥炉２の運転を自動的に停止するように制御する。この制御によって、被乾燥物１００の乾燥が完了した時点で乾燥炉２の運転を止め、加熱・乾燥処理を停止させるので、乾燥炉２における過剰な加熱・乾燥が少なくなり、過剰な加熱・乾燥処理による被乾燥物１００の品質低下やエネルギーのロスを低減することができる。 According to the drying device 1 of the present embodiment, the control means 7 has the current weight, which is the weight of the object to be dried 100 measured by the weight acquiring means 5 at present, and the object to be dried 100 measured by the weight acquiring means 5 in the past. It is determined whether or not the weight difference ΔM from the preceding weight, which is the weight of the above, is equal to or less than the threshold value, and when the weight difference ΔM is equal to or less than the threshold value, the operation of the drying furnace 2 is controlled to be automatically stopped. .. By this control, when the drying of the object to be dried 100 is completed, the operation of the drying furnace 2 is stopped and the heating / drying process is stopped. Therefore, excessive heating / drying in the drying furnace 2 is reduced, and excessive heating / drying is performed. It is possible to reduce the deterioration of the quality of the object to be dried 100 and the loss of energy due to the treatment.

また、重量取得手段５は、ターンテーブル２５又は吊りカゴ４１により構成される載置部１０に被乾燥物１００を載置し、加熱・乾燥処理をした状態のままで被乾燥物１００の重量を測定するので、効率的、継続的及び正確な重量測定をすることができる。
そして、重量取得手段５が乾燥炉２の外部に設けることで、乾燥炉２の熱の影響を遮断した条件で被乾燥物１００の重量測定をすることができるため、被乾燥物１００の重量をより正確に測定することができる。したがって、被乾燥物１００の重量測定結果に基づいて行う重量差ΔＭに関する判定をより正確に行うことができる。 Further, the weight acquisition means 5 places the object to be dried 100 on the mounting portion 10 composed of the turntable 25 or the hanging basket 41, and weights the object to be dried 100 in the state of being heated and dried. Since it is measured, efficient, continuous and accurate weight measurement can be performed.
Then, by providing the weight acquisition means 5 outside the drying furnace 2, the weight of the object to be dried 100 can be measured under the condition that the influence of the heat of the drying furnace 2 is blocked. Therefore, the weight of the object to be dried 100 can be measured. It can be measured more accurately. Therefore, it is possible to more accurately determine the weight difference ΔM based on the weight measurement result of the object to be dried 100.

以上、本発明を、実施形態を用いて説明したが、本発明の技術的範囲は上記の実施形態に記載の発明の範囲には限定されないことは言うまでもなく、上記実施形態に、多様な変更又は改良を加えることが可能であることが当業者に明らかである。また、そのような変更又は改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。 Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments. It will be apparent to those skilled in the art that improvements can be made. Further, it is clear from the description of the scope of claims that the form to which such a modification or improvement is added may be included in the technical scope of the present invention.

１乾燥装置
２乾燥炉
３加熱手段
３ａ熱風発生装置
３ｂ発振器
５重量取得手段
６温度測定手段
７制御手段
８乾燥室
９ロードセル
１０載置部
１１接続部
１２丸軸部
１４吊り部
１５軸受部
１６ａ、１６ｂ軸受
１７軸受ボス
１７ａ貫通孔
１８ａ、１８ｂ気体噴射孔
２０回転駆動部
２１モータ
２２ａ、２２ｂ歯車
２５ターンテーブル
２６支持台
２８支持部
３０送風口
３１吸気口
３２吸気管
３３入射口
３４貫通孔
３５送風管
３６導波管
４１吊りカゴ
４１ａ底板
４１ｂ側板
４１ｃ側板
４１ｄ天井板
４１ｅ天井板
４２連結部
４４搬送カゴ
４５台車
４６カゴ
５１底壁
５１ａ孔
５２側壁
５３側壁
５４天井壁
５４ａ孔
７１データ取得手段
７２判定手段
７３運転制御手段
７４ＣＰＵ
７５記憶手段
７６操作手段
１００被乾燥物 1 Drying device 2 Drying furnace 3 Heating means 3a Hot air generator 3b Oscillator 5 Weight acquisition means 6 Temperature measuring means 7 Control means 8 Drying chamber 9 Load cell 10 Mounting part 11 Connection part 12 Round shaft part 14 Suspended part 15 Bearing part 16a, 16b Bearing 17 Bearing boss 17a Through hole 18a, 18b Gas injection hole 20 Rotation drive unit 21 Motor 22a, 22b Gear 25 Turntable 26 Support base 28 Support part 30 Blower 31 Intake port 32 Intake pipe 33 Intake port 34 Through hole 35 Blower Tube 36 Waveguide tube 41 Suspended gear 41a Bottom plate 41b Side plate 41c Side plate 41d Ceiling plate 41e Ceiling plate 42 Connecting part 44 Transport basket 45 Cart 46 Basket 51 Bottom wall 51a Hole 52 Side wall 53 Side wall 54 Ceiling wall 54a Hole 71 Data acquisition means 72 Judgment Means 73 Operation control means 74 CPU
75 Storage means 76 Operation means 100 Items to be dried

Claims

A drying oven that heats and dries the object to be dried by a heating means,
A weight acquisition means for acquiring the weight of the object to be dried in the drying furnace, and
A control means for acquiring the weight of the object to be dried from the weight acquisition means at predetermined time intervals and controlling the operation of the drying furnace is provided.
The control means has a weight difference between the preceding weight, which is the weight of the object to be dried acquired by the weight acquisition means in the past, and the current weight, which is the weight of the object to be dried, which is currently acquired by the weight acquisition means. A drying device that determines whether or not the weight is equal to or less than a threshold value, and stops the operation of the drying furnace when the weight difference is equal to or less than the threshold value.

A mounting portion for mounting the object to be dried in the drying furnace is provided.
The weight acquisition means is configured to acquire the weight of the object to be dried by measuring the weight of the previously described portion on which the object to be dried is placed.
The drying apparatus according to claim 1.

A connection portion for connecting the weight acquisition means and the above-mentioned mounting portion,
It has a bearing portion that supports the connection portion and
The drying apparatus according to claim 1 or 2.

The bearing portion includes a slide bearing that supports the connection portion, and a gas injection means that blows gas into a gap between the inner diameter of the slide bearing and the outer diameter of the connection portion.
The drying apparatus according to claim 3.

It has a rotation drive unit that rotates the above-mentioned mounting unit, and has a rotation drive unit.
The connection part connects the rotation drive part and the above-mentioned place part, and
The bearing portion rotatably supports the above-mentioned mounting portion and the connecting portion.
The drying apparatus according to claim 3 or 4.

The weight acquisition means is arranged outside the drying oven.
The drying apparatus according to any one of claims 1 to 5.

The preceding weight is the weight of the object to be dried acquired by the weight acquisition means immediately before the present time.
The drying apparatus according to any one of claims 1 to 6.

The preceding weight is the weight of the object to be dried acquired by the weight acquisition means before heating the object to be dried.
The drying apparatus according to any one of claims 1 to 6.

The control means makes the determination when a certain time has elapsed from the time when the heating of the object to be dried is started.
The drying apparatus according to any one of claims 1 to 8.

It has a temperature measuring means for measuring the temperature of the object to be dried in the drying furnace.
The control means acquires the temperature of the object to be dried from the temperature measuring means at predetermined time intervals, and makes the determination when the acquired temperature of the object to be dried exceeds the temperature threshold value.
The drying apparatus according to any one of claims 1 to 9.

A drying oven that heats and dries the object to be dried by a heating means,
In a drying apparatus provided with a control means for controlling the operation of the drying furnace.
A method for controlling the operation of a drying device executed by the control means.
A data acquisition step of acquiring the weight of the object to be dried in the drying furnace at predetermined time intervals, and
The weight difference between the preceding weight, which is the weight of the object to be dried, which was acquired in the data acquisition step in the past, and the current weight, which is the weight of the object to be dried, which is currently acquired in the data acquisition step, is equal to or less than the threshold value. Judgment step to judge whether there is,
An operation control step for stopping the operation of the drying furnace when it is determined in the determination step that the weight difference is equal to or less than a threshold value.
Operation control method of the drying device including.

The preceding weight is the weight of the object to be dried acquired in the data acquisition step immediately before the present time.
The operation control method for the drying device according to claim 11.

The preceding weight is the weight of the object to be dried acquired in the data acquisition step before heating the object to be dried.
The operation control method for the drying device according to claim 11.

The determination step is performed when a certain time has elapsed from the time when the heating of the object to be dried is started.
The operation control method for a drying device according to any one of claims 11 to 13.

In the data acquisition step, in addition to the weight, the temperature of the object to be dried in the drying furnace is acquired at predetermined time intervals.
The determination step is performed when the temperature of the object to be dried, which is acquired in the data acquisition step, exceeds the temperature threshold value.
The operation control method for a drying device according to any one of claims 11 to 14.