JPS58205075A - Hot air type continuous drier - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は熱風式連続乾燥器の改良に係るものでろる。[Detailed description of the invention] The present invention relates to an improvement of a hot air continuous dryer.

従来熱ｊ虱式乾燥器として第１図（縦断面図）に示すも
のが使用されており、有機溶剤を含む塗料等を塗布され
た被乾燥物１は連続的に、乾燥器２に設けられた乾燥室
乙の入口開口部４を経て３に送入され、その内部を移動
中に６の内部を向流方向に流動する熱風５２よび６の内
壁面と熱交換して加熱乾燥され、乾燥物６となって６の
出口開口部７より連続的に２の外部に送出され乾燥を終
了する。Conventionally, a thermal locus dryer shown in Fig. 1 (vertical cross-sectional view) has been used, and the drying object 1 coated with a paint containing an organic solvent is continuously placed in a dryer 2. The hot air 52 flowing in the countercurrent direction inside 6 and the inner wall surface of 6 exchange heat with each other and are heated and dried. The dried material 6 is continuously sent out from the outlet opening 7 of 6 to the outside of 2, and the drying process is completed.

熱風５は乾燥室６内において、開口部７より４の方向に
被乾燥物と向流して流れ、乾燥室６ので熱風１０となり
、予熱源１１により予熱された後酸化触媒層１２を通過
して有機溶剤と其の他の有機物の気体の酸化による反応
熱により温度を上昇し、循環ファン１３により吸引され
、熱風１４として吐出され、その一部は排気１５として
排気ファン１６によって乾燥器２の外部に排出される。In the drying chamber 6, the hot air 5 flows countercurrently with the material to be dried from the opening 7 in the direction 4, becomes hot air 10 in the drying chamber 6, is preheated by a preheating source 11, and then passes through the oxidation catalyst layer 12. The temperature rises due to the heat of reaction caused by the oxidation of the organic solvent and other organic gases, which is sucked in by the circulation fan 13 and discharged as hot air 14. A part of it is discharged as exhaust air 15 to the outside of the dryer 2 by the exhaust fan 16. is discharged.

残部は熱源１７により必要温度迄加熱されて熱風１８と
なり、開口部７より流入する流入空気１９と混合し、熱
風２０となって乾燥室６に流入し、乾燥に必要な熱風５
の源となって連続乾燥のサイクルを形成する。The remaining portion is heated to the required temperature by the heat source 17 and becomes hot air 18, which mixes with the incoming air 19 flowing in from the opening 7, becomes hot air 20 and flows into the drying chamber 6, and hot air 5 necessary for drying.
forming a continuous drying cycle.

此の場合熱風２０の風量Ｗ９と＠Ｖ　Ｔ２Ｏは、夫々を
検出して循環ファン１６、排気ファン１６、熱源１７の
手動又は自動調節によって制御できるが、被乾燥物１の
送入量とＷ、６　、　Ｔ、。が定められると熱風５が乾
燥室を流動中に失う熱量が定′まるので、乾燥室６内に
おける熱風５の温度Ｔ。In this case, the air volume W9 and @V T2O of the hot air 20 can be detected and controlled by manual or automatic adjustment of the circulation fan 16, exhaust fan 16, and heat source 17, but the flow rate W9 of the hot air 20 and W, 6.T. When is determined, the amount of heat that the hot air 5 loses while flowing through the drying chamber 6 is determined, so the temperature T of the hot air 5 in the drying chamber 6 is determined.

の分布、６の内面温度Ｔ、の分布従って被乾燥物１の温
度分布Ｔ１も定まって丁い、これ等を変えられない欠点
があり、被乾燥物の物性上、乾燥終了における熱風温度
Ｔ２０が適当であっても、乾燥開始の熱風温ＴｆｉＴ、
が低すぎる場合は、熱風量Ｗ２ｏが一定の状態では被乾
燥物１の送入量を減小しなければならないので、乾燥器
の乾燥能力を低下させる欠点がある。distribution, the distribution of the inner surface temperature T of 6, and therefore the temperature distribution T1 of the material to be dried 1 is also fixed, and there is a drawback that these cannot be changed.Due to the physical properties of the material to be dried, the hot air temperature T20 at the end of drying is fixed. Even if it is appropriate, the hot air temperature TfiT at the start of drying,
If is too low, the amount of the material to be dried 1 fed must be reduced when the amount of hot air W2o is constant, which has the disadvantage of reducing the drying capacity of the dryer.

本発明は此の欠点を改良するもので、第２図（縦断面図
）に示す如く乾燥を終了した熱風８が■ 開口部４より流入する流入空気９と混合して熱風１０と
なり、予熱源１１、触媒１２、循環ファン１６を経て熱
ｊ虱１４となり、その一部を排（３） 気１５として失い、熱源１７を経て熱風１８となる迄は
従来の第１図の場合と同様であるが、熱風１８の大部分
は熱風２２としてダンパー２１を介して、乾燥室６の出
口開口部附近に吹出し、こ＼で開口部７より流入する流
入空気１９と混合して熱風２０となり、被乾燥物１と向
流して開口部７より開口部４の方向に流動し乾燥室乙の
内面及び被乾燥物１を加熱して、熱風２６として乾燥室
の中間に至る。The present invention aims to improve this drawback, and as shown in FIG. 11, a catalyst 12, a circulation fan 16, it becomes heat 14, a part of it is lost as exhaust air 15, and it passes through a heat source 17 and becomes hot air 18, which is the same as the conventional case shown in Fig. 1. However, most of the hot air 18 is blown out as hot air 22 through the damper 21 near the outlet opening of the drying chamber 6, where it mixes with the incoming air 19 flowing in from the opening 7 to become the hot air 20, and the drying target It flows countercurrently to the object 1 from the opening 7 toward the opening 4, heats the inner surface of the drying chamber B and the object 1 to be dried, and reaches the middle of the drying chamber as hot air 26.

他方熱源１７により加熱された熱風１Ｂの一部の熱風２
３はダンパー２４を介して、乾燥室６の中間に開口した
中間熱風吹出口２７より熱風２５として６の内部に吹出
して、熱風２６と混合し、その温度を上昇して熱風２８
となり、開口部４の方向に流動して乾燥室６の内面およ
び被乾燥物１と熱交換し、被乾燥物より発生するｍ＠ｇ
ｍＪ＃、：ｍＱ臂、、、、−Ｕ　ｉｎ　Ｌ　８　、！：
　＆　り・１１の入口終端附近に至る。かくして熱風２
５が熱ＪＬ２６混合した熱風２８の温度Ｔ２１１を、熱
風２６の温度Ｔ２６より上昇させる事により被乾燥物１
（４） と最初に接触する熱風８の温度Ｔ、を所要の温度に上昇
維持することができる。此の場合熱風２５の吹出量Ｗ２
５は熱風８の温ｊｉ　Ｔ、又は熱風２８の温度Ｔ’ｌＱ
の何れかを検出し、これを所要の値に維持するよう手動
又は自動で制御すればよい。On the other hand, a part of the hot air 2 of the hot air 1B heated by the heat source 17
3 is blown into the drying chamber 6 as hot air 25 from an intermediate hot air outlet 27 opened in the middle of the drying chamber 6 via a damper 24, mixed with hot air 26, and the temperature thereof is increased to become hot air 28.
It flows in the direction of the opening 4 and exchanges heat with the inner surface of the drying chamber 6 and the material to be dried 1, and m@g is generated from the material to be dried.
mJ#, :mQ arm,,, -U in L 8,! :
& Reach near the end of the entrance of 11. Thus hot air 2
By raising the temperature T211 of the hot air 28 mixed with the heat JL 26 from the temperature T26 of the hot air 26, the material to be dried 1
(4) The temperature T of the hot air 8 that first comes into contact with the hot air 8 can be raised and maintained at a required temperature. In this case, the blowout amount W2 of hot air 25
5 is the temperature of hot air 8 ji T, or the temperature of hot air 28 T'lQ
It is only necessary to detect either one of them and control it manually or automatically to maintain it at a required value.

文中間熱風吹出口２７は１箇に限ることはなく複数菌膜
けて、乾燥室内を流通する熱風５の温度分布を、より微
細に調節することも０工能でろる。此の如く乾燥室内の
熱風の温Ｖ調節によって適当な乾燥条件を選択できる。The number of hot air outlets 27 in the middle of the drying chamber is not limited to one, and the temperature distribution of the hot air 5 flowing in the drying chamber can be more finely adjusted by using a plurality of bacterial membranes with zero manpower. In this manner, appropriate drying conditions can be selected by adjusting the temperature V of the hot air in the drying chamber.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の熱風式連続乾燥器の概略構造を示す縦断
面図、第２図は本発明に係る熱風式連続乾燥器の概略構
造を示す縦断面である。FIG. 1 is a vertical cross-sectional view showing a schematic structure of a conventional hot air continuous dryer, and FIG. 2 is a vertical cross-sectional view showing a schematic structure of a hot air continuous dryer according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] 乾燥室の入口開口部より被乾燥物を連続送入し、出口開
口部より乾燥物を連続搬出し、乾燥室内を被乾燥物に対
して向流させて熱風を流通囃せる連続乾燥器に訃いて乾
燥室の中間に中間熱風吹出口を設けて、乾燥室を流通す
る熱風に対して、別の熱風を吹出し追加して、乾燥室を
流通する熱風＋ｕｌＪｅを任意に上昇することにより適
描な乾燥条件を選択できることを特長とする熱風式連続
乾燥器。This is a continuous dryer in which the material to be dried is continuously fed in through the inlet opening of the drying chamber, the material to be dried is continuously carried out through the outlet opening, and hot air is circulated through the drying chamber in a countercurrent direction to the material to be dried. By installing an intermediate hot air outlet in the middle of the drying chamber and adding another hot air to the hot air flowing through the drying chamber, the hot air +ulJe flowing through the drying chamber can be arbitrarily raised. A hot air continuous dryer that features the ability to select drying conditions.