JPS6035417Y2 - Leaf tobacco drying equipment - Google Patents

Description

[Detailed description of the invention] Even though the structure is simple, this invention can reduce the temperature and humidity in the drying room while saving fuel consumption by adjusting the switching of three switching valves and effectively using solar heat. The present invention relates to a leaf tobacco drying device that can efficiently dry leaf tobacco while adapting to various conditions.

Unlike the drying of general agricultural products, leaf tobacco drying involves not only simple dehydration and drying, but also a curing process that promotes chemical changes in the tobacco content in order to bring out the distinctive color and aroma of leaf tobacco. It is necessary to dehydrate and dry the mesophyll and the midbone. Therefore, the drying process can be broadly divided into the yellowing stage, which maintains the mesophyll temperature at an appropriate level, the color fixation stage, which mainly dehydrates the mesophyll, and the midbone, which dries the midbone. Drying is progressing in three stages: the dry period.

Therefore, in the drying process, it is necessary to quickly adjust the temperature and humidity in the drying room to match the drying conditions using simple adjustment means. can't get it.

Furthermore, since it takes a long time to dry leaf tobacco, a large amount of fuel is consumed, and if no improvement is made, management and maintenance costs will increase and become unprofitable, so effective use of solar heat has been actively proposed.

However, in order to effectively use solar heat to adjust the temperature and humidity inside the drying chamber to meet the above-mentioned drying conditions, there are many problems such as a very complicated configuration and cumbersome operation. be.

In view of the above, the present invention is designed to effectively use incident solar heat to save fuel consumption and to easily obtain high-temperature dry hot air, but it is possible to easily obtain high-temperature dry hot air by simply switching and adjusting the three switching valves. To provide a leaf tobacco drying device that adjusts the temperature and humidity of the drying room to match the drying conditions using a chisel, has simple configuration and adjustment operation, and can easily obtain high-quality dried leaves while achieving significant savings in fuel consumption. The configuration of the device of the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

In the drawings, reference numeral 1 denotes an oblong main body whose periphery is covered with a translucent wall plate 1', and a circulation chamber 2 is provided on one side of the main body 1.

A heat reflecting plate 3 is laid horizontally inside the main body 1 on the side adjacent to the circulation chamber 2, and the heat reflecting plate 3 is divided into upper and lower sections, and one side is connected to the circulation chamber 2. A heat storage chamber 4 having an air intake window 5 opened on the other side and a drying chamber 6 surrounded by a non-transparent wall 7 are arranged.

A flexible partition curtain 8 is hung down at a position where the heat storage chamber 4 communicates with the circulation chamber 2, and a wind pressure on-off valve 9 that opens when the heat storage chamber 4 becomes negative pressure is mounted on the intake window 5. It is worn.

At the center of the upper part of the drying chamber 6, a ventilation opening 13,14 is opened, which communicates with the circulation chamber 2 through the first switching valve 11 at one end and with the outside through the second switching valve 12 at the other end. A blower 16 is provided at the center of the lower part of the drying chamber 6, the intake side of which is connected to the circulation chamber 2, and the outlet side of which is equipped with a blower duct 15 having approximately the same length as the drying chamber 6. Fumarole ports 17 are arranged and opened on both sides of the ventilation duct 15.
The lower part of the drying chamber 6 and the ventilation duct 15 are connected through...

. Therefore, the upper ventilation passage 10 and the lower ventilation duct 15
A management passage 19 is formed between the two and the management passage 19 is covered with a flexible sheet 18 or the like.

Reference numeral 20 denotes a vent for communicating or disconnecting the heat storage chamber 4 and the ventilation path 10 by switching the third switching valve 21, and the vent 20 is located on the intake side of the heat storage chamber. It is opened in the heat reflecting plate 3.

22 is a large number of leaf tobaccos suspended in the drying chamber 6.

Next, the operation of the present invention will be explained.

Now, during the day when the entire body 1 is irradiated with sunlight,
A large amount of leaf tobacco 22 is stored in a drying chamber 6.

During the transport of the leaf tobacco 22, the inside of the main body 1 is heated by the transmission and absorption of solar heat, and the circulation chamber 2, the drying chamber 6, and the heat storage chamber 4 are heated by the heat absorption of the heat reflection plate 3. The temperature gradually rises.

Therefore, if only the first switching valve 11 is opened and the blower 16 is operated with the circulation chamber 2 and the ventilation path 10 connected through the ventilation port 13, the generated warm dry air will be circulated. A ventilation duct 15 and a ventilation passage 1 are connected between the drying room 2 and the drying room 6.
Drying work is carried out through complete circulation through 0.

When the humidity in the drying chamber 6 increases as the drying progresses, the first switching valve 11 is closed and the second switching valve 12 is opened to bring the ventilation passage 10 into communication with the outside via the ventilation opening 14. For example, the drying air blown into the drying chamber 6 is directly exhausted to the outside through the ventilation passage 10 and the ventilation opening 14, and at the same time a negative pressure state is created in the circulation chamber 2 and the heat storage chamber 4, and the partition curtain 8
Then, the air pressure on-off valve 9 is automatically opened to take in outside air through the intake window 5, while ventilation drying work is performed to bring the temperature and humidity in the drying chamber 6 to a state suitable for drying.

On the other hand, during ventilation drying work, the low-temperature outside air that is taken in passes through the heat storage chamber 4 and the circulation chamber 2, so the air becomes somewhat warmed during the passage, so the drying chamber 6
This prevents the temperature from dropping rapidly.

Therefore, if the temperature and humidity inside the drying chamber 6 become abnormally high due to drying work performed during the daytime when the sun's heat is intense, the temperature and humidity inside the drying chamber 1 can be reduced by performing the above-mentioned one-way ventilation operation for a long time. It is easy to gradually and easily achieve suitable temperature and humidity conditions.

Also, depending on the drying conditions, when it is desired to raise the temperature inside the drying chamber 6 by generating higher-temperature drying air than before, the first and second switching valves 11 and 12 are closed and the third switching valve 21 is opened. If the blower 16 is operated under certain conditions, drying air will be circulated through the heat storage chamber 4, circulation chamber 2, and drying chamber 6. At the same time, the circulating dry air will generate heat as it passes through the heat storage chamber 4. As it is actively heated by the reflector 3 and further warmed by absorbing solar heat when passing through the circulation chamber 2, the temperature inside the drying chamber 6 gradually increases, and under the required drying room temperature conditions. Leaf tobacco 22 can be dried accurately.

Therefore, in order to dry the leaf tobacco 22 through a yellowing period, a fixed color period, and a bone drying period, the above-mentioned first, second,
The third switching valve 11, 12, 21 can be opened and closed at any time to dry the temperature and humidity inside the drying chamber 6 to match the drying conditions. It is sufficient to install a generator in the circulation chamber 2 and generate drying air at an appropriate temperature for drying.As a result, significant savings in fuel consumption can be achieved. It is possible to eliminate the rapid drying and white blurring phenomena that occur when the temperature inside the drying chamber 6 abnormally increases by reflecting light rays.

In short, since the present invention has the above-described specific configuration, a large amount of leaf tobacco 22 stored in the drying chamber 6 can be effectively used by solar heat and the first, second and third switching valves 11.12.2
The drying air circulation direction and temperature and humidity can be changed and adjusted at any time by the opening/closing switching operation of step 1, and the temperature and humidity inside the drying chamber 6 can be constantly adjusted to match the drying state while an effective drying action can be performed accurately. By using the heat reflecting plate 3, the incident light is reflected and the temperature inside the drying chamber 6 is prevented from rising abnormally, thereby preventing the rapid drying and white blurring phenomena that often occur during drying, resulting in high quality. In addition, by using the partition curtain 8, the hot air in the heat storage chamber 4 is prevented from flowing into the drying chamber 6 through the circulation chamber 2, and the temperature and humidity inside the drying chamber 6 are always maintained. In addition to being able to maintain the engine in a proper state, the structure can be simplified and fuel consumption can be significantly reduced.

[Brief explanation of the drawing]

The drawings show one embodiment of the device of the present invention, and the first
The figure is a vertical front view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 1... Main body, 2... Circulation chamber, 3... Heat reflecting plate, 4... Heat storage chamber, 5... Air intake window, 6... Drying room,
8... Partition curtain, 9... Wind pressure opening/closing valve, 10... Ventilation path, 11... First switching valve, 12... Second switching valve, 1
5... Air duct, 16... Air blower, 17... Fumarole, 20... Ventilation port, 21... Third switching valve.

Claims (1)

[Scope of utility model registration request] A circulation chamber is provided on one side of the oblong body formed by covering the periphery with a translucent wall plate, and the inside of the body on the side adjacent to the circulation chamber is divided into upper and lower sections with a heat reflecting plate as a boundary. One side is connected to the circulation chamber, and the other side is equipped with a heat storage chamber with an air intake window equipped with a wind pressure shut-off valve, and a drying chamber surrounded by an opaque wall, and the upper part of the drying chamber. And in the center of the lower part, there is a ventilation passage with one end communicating with the circulation chamber via the first switching valve and the other end communicating with the outside via the second switching valve, and one end connected to the circulation chamber via the blower. In addition, a ventilation duct is installed on both sides connected to the lower part of the drying chamber through the blowhole, and a partition curtain that opens and closes by wind pressure is installed at the connection between the heat storage chamber and the circulation chamber, and a heat reflecting plate is installed. A leaf tobacco drying device characterized in that a heat storage chamber and a ventilation passage are each provided with a vent that communicates with the ventilation passage via a third switching valve.