JP2000279093A - Tea leaf drying and heating apparatus and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both an apparatus and a method for drying and heating tea leaves, capable of surely carrying out a desired drying by evenly spreading a hot air and obtaining finished green tea leaves having excellent and high qualities with respect to luster, fragrance and astringency. SOLUTION: A tea leaf housing body 2 equipped with drawer members 14 of a plural member of steps placing a plurality of tray members 15 so as to freely draw out and feed the drawer members to rack receiving members 17 for the drawer members is mounted on a burning body 1 provided with heat sources 5 by charcoal fire in a box body 3. The tray members seized by the rack receiving members of stages are arranged for each stage or several stages in such a way that in some of the trays member, a hot air from the heat sources is hit to the bottoms of the tray members and bypassed to sides and in the other tray members, a hot air is made to flow approximately at the central part. Consequently the hot air rises through the whole tea leaf housing body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for drying and burning tea leaves which have undergone a certain tea-making process and which adjust the water content and flavor.

[0002]

2. Description of the Related Art Conventionally, in the production of green tea and the like, tea leaves after the fine rubbing process are put into a dryer and have a moisture content of 4 to 5%.
The moisture is adjusted to a degree. This dryer is a shelf type, a transfer type,
The body rotation type and the like are known, and among them, the shelf-type dryer puts a number of shelves containing tea leaves in a drying room,
By forcibly blowing air from below with a hot air generator such as a burner and forcibly exhausting air from an upper air blower, drying time can be reduced and mass production can be achieved.

[0003] However, in this dryer, the tea leaves on the lowermost shelf are still exposed to a high temperature with a high water content. Does not proceed smoothly, resulting in poor drying or discoloration of the appearance, resulting in poor finish. In addition, due to forced air supply and exhaustion of hot air, tea leaves come into contact with a lot of air and become over-oxygenated, deteriorating the quality of the tea leaves. It often escapes and passes, and it is difficult for the hot air to uniformly pass through the entire surface of the tea leaves on all shelves, and drying unevenness is likely to occur. In addition, due to processing that emphasizes the finished color, fragrance could not be sufficiently output.

[0004] The above-mentioned feeding type dryer puts tea leaves on a wire mesh belt or an endless track conveyor adjusted endlessly in a drying chamber, and forcibly sends hot air to the upper part during the movement. It is dried by forced exhaust from, but a large space is required to arrange the conveyor in the drying room, so the hot air permeable space becomes large, a large amount of hot air is required, and the above-mentioned shelf type In the same manner as described above, deterioration of tea leaf quality and uneven drying are caused.

[0005] Further, the rotary drum type dryer heats a rotating horizontal cylinder containing tea leaves or supplies hot air to the inside of the cylinder to dry the tea leaves. Since it comes into contact with the cylindrical body, it may become reddish brown, damage its bud tips and bud bases, and further, it may be whitened to form powder and deteriorate its quality. Each of them has various problems, and there is a strong demand in the art for an apparatus capable of finishing tea leaves having high quality drying and good aroma.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned demands, and is directed to a multi-stage drawer in which a plurality of tray members are mounted on a combustion body provided with a heat source by a charcoal fire in a frame. A tray member, which is provided with a member capable of being drawn out to the shelf receiving member, is attached, and the tray member locked to the shelf receiving member at each stage allows hot air from a heat source to bypass the tray member to the side surface and to bypass laterally. By arranging each stage or multiple stages so as to raise the whole of the tea leaf container between the thing and the thing circulating in the central part, it is possible to reliably perform the desired drying evenly distributed hot air The upper part of the tea leaf container can be scented in almost anoxic condition, reproducing high-fragrance tea that has never existed in modern times. The finished tea leaves are of high quality with good color, aroma, and nourishment What you can get And its object is to provide a tea leaf drying burning apparatus and method.

[0007]

According to the present invention, there is provided a combustion apparatus comprising: a combustion body; and a tea leaf container provided above the combustion body. A frame body having an upper part opened by being surrounded by a wall member, an outside air intake port provided in the wall member of the frame body, and a heat source including charcoal provided in the frame body and a receiver for containing the charcoal. The tea leaf container is provided with an outer frame erected on a wall member of the combustion body, and a shelf receiving member provided in a plurality of stages in the outer frame, inside the outer frame and outside the outer frame. A large number of drawer members locked to be able to be pulled out, a plurality of tray members placed on these drawer members to store tea leaves, and an exhaust unit having an exhaust adjusting member provided on the outer frame are provided. The tray member locked to the shelf receiving members of the respective stages receives hot air from the heat source. In the bottom of the lay member to rise while bypassing laterally of the tray member, in the configuration of the tea leaves drying burning apparatus is arranged by changing the flow passage of each stage or each plurality of stages each of these hot air.

[0008] The drawer member and the tray member in the tea leaf container are formed in a similar shape which is rectangular in shape, and the plurality of tray members are arranged vertically and horizontally with respect to the depth of each drawer member. Are arranged alternately in the height direction in each step or a plurality of steps to the drawer member, and each tray member is in the drawer member of each step, and a flow path of hot air from the heat source is formed. And place it as shown.

[0009] The tray member has an air permeable member having a large number of air holes scattered at the bottom and a non-air permeable member having no air holes. The air-permeable member and at least the tray member placed on the lowermost portion of the lower portion or a plurality of drawer members from the lowermost portion are formed in a non-air-permeable shape without the ventilation holes, and A gaseous tray member and a non-air permeable tray member are selectively used.

[0010] A burning body made of a refractory member, and a tea leaf container attached to the upper part of the burning body and having a plurality of tray members mounted on a plurality of drawer members are provided. There is a method of drying and burning tea leaves to dry and burn tea leaves by direct heat.

[0011] A burning body made of a refractory member and a tea leaf container provided above the burning body, and the tea leaves supplied from the upper portion of the tea leaf container into the tea leaf container are sequentially flowed from above to below by a flow means. There is a tea leaf drying and burning method in which tea leaves are dried and burned by moving the burner by direct fire from a charcoal fire.

[0012] A tea leaf storage in which a plurality of drawer members on which a plurality of tray members are placed are provided on a combustor provided with a heat source by charcoal fire in a frame surrounding four side surfaces so as to be able to be drawn out to the shelf receiving member. The body is attached, the plurality of tray members are placed on each drawer member by changing the mounting position for each step or plurality of steps in the height direction, and hot air rising from the heat source is applied to each of the steps. A flow passage that hits the bottom surface of the tray member and bypasses laterally, and a flow passage that passes between adjacent tray members in the center of the tea leaf container are circulated so that each stage or a plurality of stages is replaced, and the tea leaves are circulated. A plurality of tray members housed in layers are arranged side by side on the drawer member, locked on the uppermost shelf receiving member in the tea leaf container, heated by hot air generated by the heat source, and passed for a predetermined time. Thereafter, this drawer member is transferred to the lower stage in the tea leaf container, and a drawer member provided with a plurality of tray members containing the next tea leaves layered on the uppermost shelf receiving member is locked, and sequentially, While repeating these steps, from the upper shelf receiving member to the lower shelf receiving member,
There is a tea leaf drying and burning method in which a drawer member on which a tray member is placed is moved to dry and burn the tea leaves.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a tea leaf drying and burning apparatus and a method thereof according to the present invention will be described with reference to the drawings.
In FIG. 1 to FIG. 3, reference symbol A denotes a tea leaf drying and burning device, which is basically composed of a burner 1 and a tea leaf container 2 provided on the burner 1.

The above-mentioned combustion body 1 comprises a frame body 3 and
It consists of an outside air intake 4, a heat source 5, and an opening / closing door 6. Among these, the frame body 3 has four side faces surrounded by a fire-resistant wall member 3a made of a fire-resistant brick or a metal plate. An opening 7 is formed in the shape of a vertically long cube having a deep depth.

The above-mentioned outside air intake 4 is provided at one or a plurality of places below the wall member 3a of the frame body 3 and takes in combustion air of a heat source 5 described later into the frame body 3. By providing the air at a position lower than the height position where the heat source 5 is installed, the fresh air uniformly contacts the heat source 5 to generate combustion air.

The above-mentioned heat source 5 is provided in the frame 3 and comprises a ignited charcoal 8 and a receiver 9 for accommodating the charcoal 8. The receiver 9 is parallel to the vertically long frame 3. , Two sets are provided substantially over the entire length and at a predetermined interval. The portion into which the charcoal 8 enters is formed in a gutter shape formed in a V-shaped cross section, and the V-shaped side plate portion has a through hole 1 for taking in combustion air.
0 are scattered uniformly, and efficient combustion air can be supplied to all of the upper and lower charcoals 8 accommodated in the receiving body 9. An enclosing member 11 is provided upright at a predetermined height on a peripheral portion of an upper edge of each of the side plate portions, and is placed on a support member 12 provided in the frame 3 so as to be able to be pulled out.

The opening / closing door 6 is provided with a wall member 3a of the frame 3.
That is provided on at least one lateral side, that is, the front part, is attached in a double-opened manner, and draws out the receiver 9 of the heat source 5 out of the frame 3 to supply, take out, or clean the charcoal 8. Therefore, the outside air intake 4 may be additionally provided.

The above-mentioned tea leaf container 2 is provided with an outer frame 13.
, A drawer member 14, a tray member 15, and an exhaust means 16. Of these, the outer frame 13 is formed in a box shape substantially the same shape as the combustion body 1, and the wall in the combustion body 1 is formed. It is erected on the member 3a.

The above-mentioned drawer member 14 is engaged with the shelf receiving members 17 provided in a plurality of stages in the outer frame 13 so as to be freely drawn out of the outer frame 13 and the outer frame 13. A large number, for example, about ten steps in the height direction are provided in correspondence with the plurality of shelf receiving members 17. This drawer member 1
4 is formed in a coarse mesh shape (lattice shape) within a range in which the tray member 15 can be supported, as shown in FIG.

The above-mentioned tray members 15 are placed on a plurality of drawer members 14 to house the tea leaves b, and a plurality of tray members 15 are provided for one drawer member 14.

The drawer member 14 and the tray member 15
As shown in FIG. 4, the tray members 15 are formed in similar shapes that are rectangular in shape, and the plurality of tray members 15 are arranged with respect to the depth of each drawer member 14 as shown in FIG. As shown in FIG. 1, the arrangement of the vertical direction and the horizontal direction as shown in FIG.
Alternatively, a plurality of stages are alternately converted and arranged on the drawer member 14. The tray member 15 may be formed in a polygon other than a rectangle, such as a square, and the size of each tray member 15 may be changed. This allows
According to the respective tray members 15, 15,..., Each stage or a plurality of stages of the drawing members 14, 14,..., As shown in FIG. A flow passage s through which hot air from the heat source 5 hits and rises while bypassing to the side, and a flow passage s passing between adjacent tray members at substantially the center in the vertical and horizontal directions of the outer frame 13 are formed. Is done. Accordingly, the bypassed hot air uniformly and evenly interferes with and contacts the tray members 15 at all positions, so that the tea leaves b in the tray members 15 can be dried and flavored well. it can.

In addition, as shown in FIG. 5B, the tray member 15 is attached to the lowermost portion of the outer frame 13 or the lowermost portion of the lowermost portion or a plurality of stages from the lowermost portion as shown in FIG. (A side portion is sometimes provided.) The air-permeable tray 15a formed in a gas-permeable state with a large number of air holes 18 scattered therein is used, and may be formed of a fine mesh net material. Further, in the outer frame 13, the tray member 15 placed on the lowermost portion of the lower portion or a plurality of drawer members 14 from the lowermost portion as shown in FIG. The air-impermeable non-permeable tray 15b may be used. The non-air-permeable tray 15b receives the powder of the tea leaves b falling from the air holes 18 in the upper air-permeable tray 15a. By preventing the powdered tea leaves b from falling, it is possible to prevent the burnt smell caused by the scorching of the powdered tea leaves b from adhering to the product tea leaves b. The non-air permeable tray 15b is formed from a refractory material such as Japanese paper or a metal plate that has been subjected to heat treatment or the like. In addition,
In some cases, a tray member 15 with an air-permeable tray 15a may be provided for all the drawer members 14, and this setting can be selectively performed depending on the tea leaves to be processed.

The above-described exhaust means 16 is provided above the outer frame 13 to appropriately discharge the hot air filling the outer frame 13.
It is performed by. This exhaust adjustment member 19
As shown in FIGS. 1 and 2, a number of exhaust ports 20 are formed in the top of the outer frame 13 and the exhaust ports 20 are closed or opened by a slidable operating member 21. By adjusting the opening degree of the exhaust port 20 by the operation member 21, the temperature and the flow rate in the tea leaf container 2 and the combustion chamber 1 can be obtained as desired.

In FIG. 1 to FIG. 3, reference numeral 22 denotes a supply port for the charcoal 8 provided in the outer frame 13 of the tea leaf container 2, which is always closed by an opening / closing lid 23. Inspection of the condition of 8 and replenishment of missing charcoal 8
By providing the tea leaf container 2 at a location where outside air does not easily enter, the temperature inside the tea leaf container 2 is not reduced, and the supply of excess oxygen is prevented.

1 to 3, 24a and 24b
Is a thermometer that detects the temperature inside the tea leaf container 2, and a thermometer 24 a is provided at a low place of the outer frame 13 in the tea leaf container 2 to detect the temperature near the heat source 5, and 24
b is provided at an intermediate portion of the outer frame 13 in the tea leaf container 2 and detects the entire temperature inside the tea leaf container 2.

The heat source 5 of the combustion body 1 and the tray member 15 of the lowermost drawer member 14 of the tea leaf container 2
Is formed by forming a predetermined open space 25,
It does not receive the strong direct fire of the heat source 5 and creates a predetermined atmospheric temperature in the space portion 25 so that hot air with as uniform a temperature as possible and with less unevenness can be naturally raised. By arranging the regulating member 26 formed in a predetermined shape such as a flat plate shape or a mountain shape at an appropriate position of the portion 25, the hot air from the heat source 5 can be rectified, circulated, or stored. In addition, it is possible to obtain a more uniform temperature or to raise hot air with all directions.

Accordingly, the apparatus A and the method for drying and burning tea leaves of the embodiment of the present invention configured as described above have the following effects. The outer frame 13 of the tea leaf container 2 has, for example, ten drawer members 1 in the height direction.
4 are attached to the shelf receiving member 17, and each drawer member 14 initially has a plurality of empty tray members 15, for example, as shown in FIG.
5 are arranged in a horizontal arrangement at the uppermost stage with respect to the depth of each drawer member, as shown in FIG.
In the lower stage, as shown in FIG.
In the vertical arrangement, and further below, in FIG.
As shown in (b), each stage of the shelf receiving member 17 is alternately converted and arranged so as to be in a horizontal arrangement. The tray member 15 is shown in FIG.
The non-air-permeable tray 15b shown in FIG.
As shown in FIG. 5 (b), an air permeable tray 15a having a vent hole 18 is used for the tier.

Further, the ignited charcoal 8 is uniformly placed in the receiver 9 of the heat source 5 and accommodated in the frame 3 of the combustion body 1, and the combustion chamber 1 and the tea leaf accommodation chamber 2 are set to an appropriate temperature, for example. , 50 ° C to 90 ° C.

First, at the start of drying and burning, tea leaves b are transferred to the uppermost shelf receiving member 17 and to four tray members 15 arranged in a horizontal direction as shown in FIG.
Are stored in layers.

In this state, the hot air generated by the charcoal 8 of the heat source 5 naturally rises and hits the bottom surface of the non-air permeable tray 15 b of the tray member 15 of the lowermost drawer member 14 and bypasses to the side. At the substantially central portion in the vertical and horizontal directions, the hot air naturally rises further upward from the flow passage s formed in the peripheral portion of the tray member 15.

The hot air that has risen from the flow passage s is again blocked because the non-air permeable tray 15b of the tray member 15 in the immediately upper stage blocks a straight (no resistance) rise.
By repeating the operation in which the hot air naturally rises further upward from the flow passage s formed in the peripheral portion of the tray member 15 while hitting the bottom surface of the non-air permeable tray 15b and bypassing to the side, the hot air is It is meandering and flows to the center part and the corners of the side frame 13 in the outer frame 13 and spreads evenly to each tray member 15. Thus, the tray member 15 containing the tea leaves b provided at the uppermost stage is heated. A predetermined drying process is performed by the hot air that has passed through the air holes 18 of the air-permeable tray 15a, the hot air at the outer peripheral portion of the tea leaf layer, and the far-infrared rays emitted from the charcoal 8.

Then, a predetermined heating time, for example, 2 minutes to
After 10 minutes have elapsed, the uppermost drawer member 14 is pulled out and transferred to one lower stage of this stage, and the tray member 15 placed in the vertical arrangement as shown in FIG. The unprocessed tea leaves b are stored and attached to the uppermost shelf receiving member 17 after being pulled out. Note that the transfer of the drawer member 14 can be performed by moving the drawer member 14 to the lower stage while pulling it out,
The tea leaves b can be dried and fired more uniformly.

When the temperature inside the tea leaf container 2 is different from the predetermined temperature, that is, when the temperature becomes high, the exhaust adjusting member 19 of the exhaust means 16 provided above the tea leaf container 2 is operated. The temperature is lowered by discharging hot air from the exhaust port 20 provided at the top of the outer frame 13. Further, when the temperature in the tea leaf container 2 becomes low, the supply of charcoal 8 from the supply port 22 provided in the outer frame 13 is performed.
Is supplied to the receiver 9, the temperature in the tea leaf container 2 rises.

In this way, after a predetermined heating time has elapsed in one stage, the drawer members 14 on which the tray members 15 of the tea leaves b are sequentially placed on the lower shelf receiving members 17 one after another. The drawer member 14 on which the tray member 15 containing the unprocessed tea leaves b is placed is attached to the shelf receiving member 17 at the uppermost stage, and these tea leaves b are transferred from the heat source 5. At the farthest position,
Since the heating is performed in a substantially oxygen-free state, the surface is not burned in a multi-water-containing state, while maintaining the green color of the tea leaves b, from the state of having a water content of 10 to 15% at the beginning of introduction, Water is gradually removed from the center,
Drying proceeds well.

In this way, when the drawer member 14 for the tea leaves b which has been initially supplied reaches the third shelf receiving member 17 from the bottom in the tea leaf container 2, the tray member 15 is moved to the position shown in FIG.
As shown in (a), the tea leaves b are put in the middle of processing by replacing with the non-air permeable tray 15b, and the third stage shelf receiving member 1
7 and heating is further performed.

In this heating portion, the heat generated by the heat source 5 in the combustion body 1 gradually increases, so that the tea leaves b are subjected to a burning process to give a scent.
In this step, three steps up to the lowermost stage after a predetermined heating time are performed.

When the drawing member 14 for the tea leaves b reaches the lowermost shelf receiving member 17 and a certain processing is completed, the tea leaf container 2
This tea leaf b is removed and transferred to another storage body (not shown) to complete the processing step, and its moisture content is 4 to 5%.
The moisture is adjusted to a degree.

At this time, by associating the non-air permeable tray 15b with the lowermost portion (including the three stages from the bottom), the powder of the tea leaves b falling from the air holes 18 in the upper air permeable tray 15a is Since it is not dropped to the heat source 5 by being received by the non-air permeable tray 15b, the burning smell caused by the scorching of the powdered tea leaves b does not adhere to the product or the tea leaves b being processed.

[0039]

According to the present invention constructed as described above, since the drying proceeds in the step of gradually moving downward from the tea leaves of the drawer member provided at the uppermost stage, the tea leaves are exposed to a high temperature when the water content is high. The discoloration of the appearance is suppressed, and the core water of the tea leaves is removed, and the drying of the core water proceeds smoothly, a good drying state is obtained and the tea leaves of high quality are processed. Is done. Also, since the hot air is naturally sent and exhausted, there is no excessive air interference with the tea leaves, and the upper part of the tea leaf container is formed almost in an oxygen-free state. In addition to suppressing the deterioration of quality in the oxygen state, the flow path of hot air can be efficiently arranged by alternately arranging the tray members in the vertical and horizontal directions for each stage. On the other hand, hot air is uniformly applied to the tea leaves on the entire surface of the tray member, and drying unevenness does not occur. The processing of the processed tea leaves proceeds in a state where the processed tea leaves do not move in the tray member, so that there is no occurrence of a powder state due to the movement during the processing. And so on.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional front view showing an embodiment of a tea leaf drying and burning apparatus employing a tea leaf drying and burning method according to the present invention.

FIG. 2 is a perspective view of the device in FIG.

FIG. 3 is a plan view of the apparatus in FIG. 1 traversed by a tea leaf container.

FIG. 4 is a perspective view of a drawer member showing each mounting example of a tray member used in the apparatus in FIG.

FIG. 5 is a sectional view showing each example of a tray member of the apparatus in FIG. 1;

[Explanation of symbols]

 Reference Signs List A Tea leaf drying / burning device b Tea leaf s Flow passage 1 Burner 2 Tea leaf container 3 Frame 3a Wall member 4 Outside air intake 5 Heat source 6 Opening door 8 Charcoal 9 Receiver 13 Outer frame 14 Drawer member 15 Tray member 16 Exhaust means 17 Shelf receiving member 18 Vent hole 19 Exhaust adjusting member

Claims (5)

[Claims] 1. A frame comprising a combustion body and a tea leaf container provided on an upper portion of the combustion body, wherein the combustion body has four side surfaces surrounded by wall members and an upper portion opened, An external air intake provided in a wall member of the body, and a heat source provided in the frame and including a charcoal and a receiver that stores the charcoal; and the tea leaf container is erected on a wall member of the combustion body. Outer frames, a plurality of drawer members which are locked to the shelf receiving members provided in a plurality of stages in the outer frames so as to be able to be drawn out of the outer frame and the outer frame, and mounted on these drawer members. A plurality of tray members for placing and storing tea leaves, and an exhaust unit having an exhaust adjusting member provided above the outer frame, wherein the tray members locked to the shelf receiving members of the respective stages, Hot air from the heat source hits the bottom surface of the tray member and bypasses to the side of the tray member, and A tea leaf, wherein the hot air flow paths are changed and arranged for each stage or for a plurality of stages so as to ascend while passing between adjacent tray members at a substantially central portion of the tea leaf container. Dry burning equipment. 2. A drawer member and a tray member in a tea leaf container are formed in a similar shape having a rectangular shape with respect to each other, and the plurality of tray members are vertically and horizontally oriented with respect to the depth of each drawer member. The arrangement of the trays is alternately changed to a drawer for each step or a plurality of steps in the height direction, and each tray member is located at the drawer of each step, and a flow path of hot air from the heat source is provided. 2. The apparatus for drying and burning tea leaves according to claim 1, wherein the apparatus is placed so as to be formed. 3. The tray member includes: a tray member formed in a gas-permeable state having a large number of ventilation holes scattered in a bottom portion; and a tray member formed in a non-air-permeable state having no ventilation hole. The one formed in the air-permeable form, at least, the tray member placed on the lowermost section or the lowermost section or a plurality of drawer members from the lowermost section in the lower section is formed in a non-air-permeable manner without the vent hole, The tea leaf drying and burning apparatus according to claim 1 or 2, wherein the air-permeable tray member and the non-air-permeable tray member are selectively used. 4. A combustor made of a refractory member, and a tea leaf container attached to an upper portion of the combustor and having a plurality of tray members mounted on a plurality of drawer members. A method for drying and burning tea leaves, comprising drying and burning the tea leaves by direct heat. 5. A plurality of drawer members on which a plurality of tray members are placed are provided on a combustor provided with a heat source by charcoal fire in a frame surrounding four side surfaces so as to be able to be drawn out to the shelf receiving member. A tea leaf container is attached, the plurality of tray members are placed in respective drawer members by changing the placement position for each stage or a plurality of stages in the height direction, and the hot air rising from the heat source is A flow passage that hits the bottom surface of the tray member of the step and detours to the side, and a flow passage that passes between adjacent tray members at a substantially central portion of the tea leaf container are circulated so that each stage or a plurality of stages are replaced. A plurality of tray members accommodating tea leaves in layers are arranged side by side on a drawer member, locked on the uppermost shelf receiving member in the tea leaf container, and heated by hot air generated by the heat source for a predetermined time. After the lapse of time, this drawer member is moved to the lower stage in the tea leaf container, and a drawer member provided with a plurality of tray members containing the next tea leaves in a layered state is locked on the uppermost shelf receiving member, and sequentially A method of drying and burning tea leaves by repeating the above steps, moving the drawer member on which the tray member is placed from the upper shelf receiving member to the lower shelf receiving member, and drying and burning the tea leaves. .