JPH0218818B2 - - Google Patents
Info
- Publication number
- JPH0218818B2 JPH0218818B2 JP60160772A JP16077285A JPH0218818B2 JP H0218818 B2 JPH0218818 B2 JP H0218818B2 JP 60160772 A JP60160772 A JP 60160772A JP 16077285 A JP16077285 A JP 16077285A JP H0218818 B2 JPH0218818 B2 JP H0218818B2
- Authority
- JP
- Japan
- Prior art keywords
- far
- tea
- generator
- hot air
- hot
- 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.)
- Expired - Lifetime
Links
- 244000269722 Thea sinensis Species 0.000 claims description 43
- 238000001035 drying Methods 0.000 claims description 27
- 235000013616 tea Nutrition 0.000 claims description 26
- 235000009569 green tea Nutrition 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000002344 surface layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Tea And Coffee (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は緑茶乾燥機に関し、特に熱風と遠赤外
線とによる乾燥を併用したことを特徴とするもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a green tea dryer, and is particularly characterized in that it uses both hot air and far infrared rays for drying.
（従来の技術）
緑茶は茶園で摘採された新鮮な生茶葉を蒸熱処
理した後、粗揉、中揉、揉捻、精揉等の処理を加
えて荒茶とし、更にこれに乾燥、火入れ等の処理
を施して最終製品とする。(Conventional technology) Green tea is made by steaming fresh raw tea leaves picked from tea gardens, then subjecting them to rough rolling, medium rolling, rolling, fine rolling, etc. to make rough tea, which is then further processed by drying, pasteurization, etc. Process it to make the final product.
緑茶は適度に乾燥して含有水分量を調節するこ
とによつて保存性が高められ、保存中の香り等の
滅失が抑えられるのであるが、殊に緑茶の場合は
乾燥の際の適度な加熱によつて特有の香りや旨み
が高められる。 The preservation of green tea can be improved by properly drying it and controlling the moisture content, and the loss of aroma etc. during storage can be suppressed. This enhances the unique aroma and flavor.
そのため、緑茶は加熱乾燥することが必須の要
件になつている。 Therefore, heating and drying green tea has become an essential requirement.
（発明が解決しようとする課題）
緑茶の乾燥は、従来から熱風乾燥法によつて行
われている。(Problems to be Solved by the Invention) Green tea has traditionally been dried by a hot air drying method.
この乾燥機は所謂トレーコンベヤ式の乾燥機で
あつて、内部にトレーコンベヤを備えた乾燥室と
熱風発生器とから成つていて、熱風発生器で新鮮
な空気を加熱し、これを乾燥媒体として乾燥室に
供給してトレーコンベヤ上に積載された荒茶を加
熱し、乾燥するものである。 This dryer is a so-called tray conveyor type dryer, and consists of a drying chamber equipped with a tray conveyor inside and a hot air generator.The hot air generator heats fresh air and converts it into a drying medium. The crude tea is supplied to a drying room and loaded on a tray conveyor, where it is heated and dried.
ところで、トレーコンベヤ式の熱風乾燥機は、
茶葉を傷めることがなく乾燥能率が高い利点があ
るが、反面、荒茶はトレーコンベヤ上にかなりの
厚さに積載されていて、表層部にあるものが直接
熱風に接して重点的に加熱されるので、表層部に
あるものと下層部にあるものとの間に加熱のムラ
が生じるのは避けられない。 By the way, the tray conveyor type hot air dryer is
It has the advantage of high drying efficiency without damaging the tea leaves, but on the other hand, rough tea is stacked quite thickly on the tray conveyor, and the surface layer is directly exposed to hot air and heated intensively. Therefore, it is inevitable that uneven heating will occur between the surface layer and the lower layer.
そのため表層部の荒茶は加熱の度合いや乾燥の
度合いが過剰になつて香りが逸散するし、下層の
ものは加熱や乾燥が不十分なため香りの発現が不
足する。しかもこれらが混合されるため、結局緑
茶は香気が少なく、品質の低いものとなるのであ
る。 As a result, the coarse tea in the surface layer is overheated and dried to an excessive degree, causing its aroma to escape, while the lower layer is insufficiently heated and dried, resulting in insufficient aroma expression. Moreover, because these ingredients are mixed together, green tea ends up having little aroma and being of low quality.
係る不具合を解消するには荒茶を均一に加熱す
ることが必要であるが、荒茶は極めて脆くて破砕
し易くて、例えば撹拌乾燥法のよう均一な乾燥法
を採ることが出来ないため、トレーコンベヤ式の
乾燥を余儀なくされたのである。 To solve this problem, it is necessary to uniformly heat the rough tea, but rough tea is extremely brittle and easily crushed, so it is not possible to use a uniform drying method such as the stirring drying method. They had no choice but to use a tray conveyor method for drying.
又、荒茶は燃焼ガスを接触させると著しく品位
が低下するため、緑茶乾燥機は高温の燃焼ガスを
直接乾燥室に導入する方式にことができないの
で、燃料の利用効率が低いと云う問題もあつた。 In addition, the quality of raw tea deteriorates significantly when it comes into contact with combustion gas, so green tea dryers cannot introduce high-temperature combustion gas directly into the drying chamber, resulting in the problem of low fuel usage efficiency. It was hot.
このようなことから、荒茶を均一に加熱し乾燥
して香りの高い上質の緑茶を得ることの出来る乾
燥法の開発が望まれていた。 For this reason, it has been desired to develop a drying method that can uniformly heat and dry rough tea to obtain high-quality green tea with a high aroma.
（課題を解決するための手段）
本発明は上記した点に鑑みて成されたものであ
つて、荒茶に熱風を当てながら遠赤外線で加熱す
ると、熱風や遠赤外線のみで加熱する場合に比べ
て内部まで加熱されて、表層部のものと下層部の
ものとの加熱の度合いの差が小さくなる点に着目
し、トレーコンベヤ式熱風乾燥機の乾燥室に遠赤
外線発生器を取り付けて、荒茶に遠赤外線を照射
して加熱し、以つて熱風乾燥のみによる場合に比
べて表層部の荒茶の加熱度合いをより少なくし、
下層部のもの、加熱度合いをより多くして香りの
高い製品緑茶が得られるようにしたものである。(Means for Solving the Problems) The present invention has been made in view of the above-mentioned points, and it is found that heating raw tea with far infrared rays while blowing hot air is more effective than heating only with hot air or far infrared rays. Focusing on the fact that the heat is heated to the inside, and the difference in the degree of heating between the surface layer and the lower layer becomes smaller, we installed a far-infrared generator in the drying chamber of the tray conveyor type hot air dryer. By heating the tea by irradiating it with far infrared rays, the degree of heating of the rough tea in the surface layer is lower than when drying with hot air alone.
In the lower layer, the degree of heating is increased to obtain a green tea product with a high aroma.
殊に、本発明は遠赤外線発生器を管状に形成し
てこれを熱風発生器の排気ダクトに接続し、熱風
発生器の高温排ガスをこれに導入して遠赤外線を
発生させるようにして、燃料の利用効率を著しく
高めたものである。 In particular, the present invention has a far-infrared ray generator formed in a tubular shape, which is connected to an exhaust duct of a hot-air generator, and high-temperature exhaust gas from the hot-air generator is introduced into it to generate far-infrared rays. This significantly increases the efficiency of use.
（作 用）
荒茶を乾燥するときは、乾燥機を所定の手順で
運転し、トレーコンベヤを回転させながらホツパ
ーから荒茶を定量的に投入する。(Function) When drying rough tea, operate the dryer according to a predetermined procedure, and quantitatively feed the rough tea from the hopper while rotating the tray conveyor.
そして、熱風発生器で加熱された空気を乾燥室
に供給して荒茶を加熱すると同時に、熱風発生器
から排出される高温排ガスを遠赤外線発生器に導
入する。 Then, air heated by the hot air generator is supplied to the drying chamber to heat the rough tea, and at the same time, high-temperature exhaust gas discharged from the hot air generator is introduced into the far-infrared generator.
すると遠赤外線発生器から遠赤外線が放射さ
れ、この遠赤外線が荒茶に照射されて荒茶を加熱
乾燥するのである。 Then, far-infrared rays are emitted from the far-infrared generator, and this far-infrared rays are irradiated onto the rough tea to heat and dry it.
（実施例）
以下、本発明に係る緑茶乾燥機を図示の実施例
に基づいて具体的に説明する。(Example) Hereinafter, the green tea dryer according to the present invention will be specifically described based on the illustrated example.
第１図は緑茶乾燥機の縦断側面図、第２図は縦
断正面図、第３図は遠赤外線発生器の一例を示す
もので、図中符号１は乾燥室、２は熱風発生器で
ある。この乾燥機は一例としてトレーコンベヤ式
の乾燥機を示したもので、基本的には通常のこの
種のものと変わるところはない。 Fig. 1 is a vertical side view of a green tea dryer, Fig. 2 is a longitudinal front view, and Fig. 3 is an example of a far-infrared generator. In the figure, numeral 1 is a drying chamber and 2 is a hot air generator. . This dryer is a tray conveyor type dryer as an example, and is basically the same as a normal dryer of this type.
即ち、乾燥室１には数段のトレーコンベヤ３が
設けられており、更に乾燥室１の上面には荒茶の
投入ホツパー４が形成されていて、こゝから乾燥
室１に荒茶を投入すると荒茶は先ず最上段のトレ
ーコンベヤ３に積載される。そして、トレーコン
ベヤの回転するにしたがつて順次下段のトレーコ
ンベヤに転載され、最後に乾燥した緑茶として乾
燥室１より取り出されるようになつている。 That is, the drying chamber 1 is provided with several tray conveyors 3, and furthermore, a rough tea input hopper 4 is formed on the top surface of the drying chamber 1, from which the rough tea is input into the drying chamber 1. Then, the rough tea is first loaded onto the tray conveyor 3 at the top. Then, as the tray conveyor rotates, the tea is sequentially transferred to the lower tray conveyor, and finally taken out from the drying room 1 as dried green tea.
熱風発生器２は一種の熱交換器であつて、符号
８は火炉、９は通気管である。 The hot air generator 2 is a kind of heat exchanger, and numeral 8 is a furnace and 9 is a vent pipe.
火炉８にはバーナー１０が取り付けられていて
都市ガスやプロパンガス等の燃料を燃焼させてそ
の火炎を火炉８に吹き込むようになつている。 A burner 10 is attached to the furnace 8 and is configured to combust fuel such as city gas or propane gas and blow the flame into the furnace 8.
一方、通気管９は火炉８を貫通していてこの中
を空気が通過するようになつており、この空気が
上記したバーナー１０の燃焼熱と熱交換して加熱
されるのである。 On the other hand, the vent pipe 9 passes through the furnace 8 and allows air to pass therethrough, and this air is heated by exchanging heat with the combustion heat of the burner 10 described above.
この通気管９には集風室１１が接続されてお
り、更に集風室１１には送風機１２が取り付けら
れていて、通気管９を通過して適度に加熱された
空気が先ず集風室１１に入り込み、こゝで全体が
混合してほヾ均一な温度になつた後、送風機１２
によつて熱風供給管７を経て乾燥室１に送り込ま
れるのである。 An air collection chamber 11 is connected to the ventilation pipe 9, and a blower 12 is attached to the air collection chamber 11. After the mixture is mixed and the temperature is almost uniform, the blower 12 is turned on.
The hot air is sent into the drying chamber 1 through the hot air supply pipe 7.
符号５は遠赤外線発生器である。このものは、
熱風発生器２より排出される高温排ガスを熱源と
するもので、管状に形成されていて一種の導通管
となつており、熱風発生器２の燃焼排ガスの排出
ダクト６に接続されていて、高温排ガスの全部、
又は１部が管内に導入されるようになつている。
勿論、遠赤外線発生器５は高温排ガスの熱を遠赤
外線に変換する熱エネルギー変換器であつて、一
例として金属性管体の管壁に酸化ジルコニウム、
酸化チタン、酸化アルミニウム等の金属酸化物を
主体とするセラミツクスを塗付して形成するので
ある。 Reference numeral 5 is a far-infrared ray generator. This thing is
The heat source is high-temperature exhaust gas discharged from the hot-air generator 2. It is formed into a tubular shape and serves as a kind of conduction pipe, and is connected to the combustion exhaust gas exhaust duct 6 of the hot-air generator 2. all exhaust gas,
Alternatively, a portion is introduced into the pipe.
Of course, the far-infrared generator 5 is a thermal energy converter that converts the heat of high-temperature exhaust gas into far-infrared rays, and for example, zirconium oxide,
It is formed by applying ceramics mainly composed of metal oxides such as titanium oxide and aluminum oxide.
（発明の効果）
以上詳述したように本発明に係る緑茶乾燥機
は、熱風発生器の高温排ガスを熱源とする遠赤外
線発生器をトレーコンベヤ式の熱風乾燥機の集風
室に取り付け、これによつて荒茶に遠赤外線を照
射して加熱するもので、このようにすることによ
つてその分だけ乾燥室に供給する熱風の量を少な
くすることが可能となり実質的に燃料の使用効率
が高まり消費量が減少する。(Effects of the Invention) As detailed above, the green tea dryer according to the present invention includes a far-infrared generator that uses the high-temperature exhaust gas of the hot air generator as a heat source, which is attached to the air collection chamber of the tray conveyor type hot air dryer. This method heats the rough tea by irradiating it with far infrared rays, and by doing so, it is possible to reduce the amount of hot air supplied to the drying chamber, which substantially improves fuel usage efficiency. increases and consumption decreases.
そして、例えば熱風は乾燥室内を所定の温度に
保つことを主眼とし、遠赤外線による加熱の不足
分を補うだけの量にすると、トレーコンベヤ上の
荒茶は表層部のみが加熱される度合いが穏やかに
なる。その結果、荒茶は加熱むらが少なくなり、
加熱しすぎによる香りの滅失、加熱不足による香
りの不良等が一段と少なくなり全体として香りの
高い優れた緑茶が得られるのである。 For example, if the main purpose of hot air is to maintain the temperature inside the drying chamber at a predetermined level, and if the amount is used to compensate for the lack of heating by far infrared rays, then only the surface layer of the rough tea on the tray conveyor will be heated to a gentle degree. become. As a result, rough tea becomes less unevenly heated.
Loss of aroma due to overheating, defective aroma due to insufficient heating, etc. are further reduced, and an excellent green tea with a high overall aroma can be obtained.
第１図は本発明に係る緑茶乾燥機の一実施例を
示す縦断側面図、第２図は同上縦断正面図、第３
図は要部を示す斜視図である。
１：乾燥室、２：熱風発生器、３：トレーコン
ベヤ、４：投入ホツパー、５：遠赤外線発生器、
６：排出ダクト、７：熱風供給管、８：火炉、
９：通気管、１０：バーナー、１１：集風室、１
２：送風機。
FIG. 1 is a longitudinal sectional side view showing one embodiment of the green tea dryer according to the present invention, FIG. 2 is a longitudinal sectional front view of the same, and FIG.
The figure is a perspective view showing main parts. 1: Drying room, 2: Hot air generator, 3: Tray conveyor, 4: Feeding hopper, 5: Far-infrared generator,
6: Discharge duct, 7: Hot air supply pipe, 8: Furnace,
9: Ventilation pipe, 10: Burner, 11: Air collection chamber, 1
2: Blower.
Claims (1)
レーコンベヤの上に遠赤外線発生器を取り付けて
荒茶を熱風と遠赤外線とで加熱して乾燥するよう
にしたトレーコンベヤ式の緑茶乾燥機であつて、
遠赤外線発生器は管状に形成してこれを熱風発生
器の排気ダクトに接続し、熱風発生器の高温排ガ
スの全部、又は１部をこれに導入して遠赤外線を
発生させるようにしたものであることを特徴とす
る緑茶乾燥機。1 A tray conveyor type green tea dryer is equipped with a hot air generator in the drying room and a far infrared generator on top of each tray conveyor to heat and dry the rough tea with hot air and far infrared rays. It's hot,
A far-infrared generator is formed into a tubular shape and connected to the exhaust duct of a hot-air generator, and all or part of the high-temperature exhaust gas from the hot-air generator is introduced into it to generate far-infrared rays. A green tea dryer characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16077285A JPS6222548A (en) | 1985-07-19 | 1985-07-19 | Green tea dryer having far infrared ray generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16077285A JPS6222548A (en) | 1985-07-19 | 1985-07-19 | Green tea dryer having far infrared ray generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6222548A JPS6222548A (en) | 1987-01-30 |
| JPH0218818B2 true JPH0218818B2 (en) | 1990-04-26 |
Family
ID=15722118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16077285A Granted JPS6222548A (en) | 1985-07-19 | 1985-07-19 | Green tea dryer having far infrared ray generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6222548A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6042089B2 (en) * | 2012-04-20 | 2016-12-14 | 株式会社福寿園 | Coffee tea furnace and rough tea manufacturing method |
| CN105875876A (en) * | 2014-11-18 | 2016-08-24 | 黄德铭 | Automatic pendulum-type material feeding device for tea frying machine |
| CN104482744A (en) * | 2014-11-19 | 2015-04-01 | 上海申航热能科技有限公司 | Primary tea drier adopting far-infrared heating |
| JP6810323B2 (en) * | 2015-10-30 | 2021-01-06 | 株式会社寺田製作所 | Tencha drying furnace |
| JP7201169B2 (en) * | 2019-02-04 | 2023-01-10 | カワサキ機工株式会社 | Tencha drying equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391196A (en) * | 1977-01-21 | 1978-08-10 | Houdenshiya Kk | Tea making and drying method with light |
| JPS5747150A (en) * | 1980-09-05 | 1982-03-17 | Kigiyoukumiai Shizuoka Kikai Seisakusho | Tea leaf dryer |
| JPS58208575A (en) * | 1982-05-28 | 1983-12-05 | 企業組合静岡機械製作所 | Drier for tea leaf |
| JPS59185973A (en) * | 1983-04-07 | 1984-10-22 | 企業組合静岡機会製作所 | Tray conveyor type green tea drier |
-
1985
- 1985-07-19 JP JP16077285A patent/JPS6222548A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391196A (en) * | 1977-01-21 | 1978-08-10 | Houdenshiya Kk | Tea making and drying method with light |
| JPS5747150A (en) * | 1980-09-05 | 1982-03-17 | Kigiyoukumiai Shizuoka Kikai Seisakusho | Tea leaf dryer |
| JPS58208575A (en) * | 1982-05-28 | 1983-12-05 | 企業組合静岡機械製作所 | Drier for tea leaf |
| JPS59185973A (en) * | 1983-04-07 | 1984-10-22 | 企業組合静岡機会製作所 | Tray conveyor type green tea drier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6222548A (en) | 1987-01-30 |
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