A kind of moisturizing intensive curing barn for flue-cured tobacco

Abstract

The utility model discloses a kind of moistening intensive curing barns for flue-cured tobacco, it includes curing barn body, hot air inlet and return air inlet are equipped on the partition wall between the heating chamber and the tobacco chamber of curing barn body, furnace body and heat exchanger are equipped in heating chamber, water replenishing device for spraying water mist to heat exchanger fin is equipped in heating chamber, air guide channel for guiding hot air to the direction of tobacco chamber door is equipped in tobacco chamber, air outlet is distributed and arranged in the side of air guide channel towards hanging tobacco, multiple water-absorbing cotton cloth are equipped in air guide channel;The utility model can dynamically supplement environmental humidity, delay tobacco leaf water loss drying rate, conducive to intensive curing barn moisture retention and tobacco leaf yellow dry coordination in baking process, so as to guarantee the baking quality and economic benefits of drought area tobacco leaf and upper tobacco leaf.

Description

Technical Field

[0001] This utility model relates to a humidified dense curing barn for tobacco curing, belonging to the field of curing barn tools. Background Technology

[0002] Flue-cured tobacco is an important economic crop in agricultural production, and its curing process and supporting facilities such as intensive curing barns directly determine the quality and commercial value of tobacco leaves. In arid and semi-arid tobacco-growing areas, prolonged water shortage during the tobacco leaf growth period leads to a significantly lower than normal moisture content in fresh tobacco leaves. This is especially true for the upper leaves of flue-cured tobacco, which are rich in internal substances but have lower moisture content compared to the middle and lower leaves, a problem exacerbated during dry seasons. When these leaves enter the curing barn, the high temperature and low humidity environment accelerates moisture loss, particularly during the yellowing and color-fixing stages, resulting in excessively rapid dehydration and a stiff, smooth texture. Premature and excessive water loss not only reduces the softness and increases the brittleness of the cured tobacco leaves but also inhibits the transformation of internal substances, leading to quality defects such as a strong grassy or off-flavor, dull color, and lack of oil content, severely reducing the proportion of high-quality tobacco and its industrial usability.

[0003] In other words, there is a need for a dense curing barn that can dynamically replenish environmental humidity, slow down the rate of tobacco leaf dehydration and drying, and facilitate the coordination of moisture retention and yellowing and drying of tobacco leaves during the curing process, thereby ensuring the curing quality and economic benefits of tobacco leaves and upper tobacco leaves in arid producing areas. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a intensive curing barn for tobacco that can dynamically replenish environmental humidity, slow down the rate of tobacco leaf dehydration and drying, and facilitate the coordination of moisture retention and yellowing and drying of tobacco leaves during the curing process, thereby ensuring the curing quality and economic benefits of tobacco leaves and upper tobacco leaves in arid producing areas; it can overcome the shortcomings of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] This utility model discloses a moisturizing dense curing barn for tobacco curing, which includes a curing barn body. A hot air inlet and a return air inlet are provided on the partition wall between the heating chamber and the tobacco loading chamber of the curing barn body. A furnace body is provided in the heating chamber. A water replenishment device for spraying water mist onto the heat exchanger fins is provided in the heating chamber. An air guide channel is provided in the tobacco loading chamber to guide the hot air towards the door of the tobacco loading chamber. Air outlets are distributed on the side of the air guide channel facing the tobacco. Multiple water-absorbing cotton cloths are provided in the air guide channel.

[0007] The aforementioned water replenishment device includes a water tank installed on the main body of the drying oven, the water tank being connected to a heat exchanger via a delivery pipe, a nozzle for spraying water mist onto the heat exchange fins being installed at the outlet of the delivery pipe, and a valve being installed on the delivery pipe.

[0008] As mentioned above, the water tank is equipped with a coil, the exhaust pipe of the heat exchanger is connected to the coil, and an external exhaust pipe is provided on the coil.

[0009] As mentioned above, a flow meter is installed on the delivery pipe.

[0010] The aforementioned air guide channel includes vertical partitions distributed along the longitudinal direction of the smoke loading chamber, and air guide vanes inclined towards the smoke loading chamber door are provided between the vertical partitions.

[0011] As mentioned above, the absorbent cotton cloth is in the form of long strips, distributed along the longitudinal direction of the smoke chamber on the air guide plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In the tobacco curing stage, this utility model sprays water mist onto the heat exchanger fins through a water replenishment device. The water vapor evaporates through the fins and then enters the tobacco loading chamber through the hot air inlet along with the hot air, thereby replenishing and moisturizing the tobacco leaves in the loading chamber. This dynamically replenishes the ambient humidity, slows down the rate of water loss and drying of the tobacco leaves, and is beneficial for maintaining moisture in dense curing barns and coordinating the yellowing and drying of tobacco leaves during the curing process. This ensures the curing quality and economic benefits of the upper part of the tobacco leaves in arid production areas.

[0014] 2. The water replenishment device includes a water tank installed on the main body of the drying barn. The water tank is connected to the heat exchanger via a delivery pipe. A nozzle for spraying water mist onto the heat exchanger fins is installed at the outlet of the delivery pipe. A valve is installed on the delivery pipe, allowing water to be sprayed onto the heat exchanger fins through the nozzle. A coil is installed in the water tank, and the exhaust pipe of the heat exchanger is connected to the coil. An external drain pipe is installed on the coil, which utilizes the waste heat from the exhaust gas to preheat the water in the water tank, reducing heat loss on the heat exchanger fins. A flow meter is installed on the delivery pipe, allowing for the measurement of the amount of water replenished, which is beneficial for controlling the water supply to the intensive drying barn.

[0015] 3. The air guiding channel includes vertical partitions distributed along the longitudinal direction of the tobacco loading chamber. Between these partitions are guide vanes inclined towards the chamber door. This is because, when hot air is used to transport water vapor, it is necessary to guide the hot air to prevent excessive accumulation of water vapor on the tobacco leaves near the hot air inlet, which would cause uneven humidity. The hot air is then directed to exit from the top or bottom of the loading chamber. The air guiding channel ensures even airflow and also evenly distributes the water vapor in the hot air into the loading chamber, promoting uniform humidity control.

[0016] 4. The absorbent cotton cloth is in the form of long strips, distributed along the longitudinal direction of the tobacco loading chamber on the air guide plates. Specifically, the absorbent cotton cloth is fixedly connected to the air guide plates by nails or similar means. This allows the absorbent cotton cloth to absorb some of the volatile components of the tobacco leaves during the curing stage when the leaves lose a significant amount of moisture. When water replenishment is needed, the volatile components can be returned to the tobacco leaves. While maintaining moisture, the aromatic compounds contained in the returned volatile components also return to the tobacco leaves, which helps preserve the aroma and improve the quality of the cured tobacco. Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a perspective structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional connection structure diagram of the air guide channel of this utility model.

[0020] The components include: 1. Curing chamber body; 2. Heating chamber; 3. Smoke loading chamber; 4. Hot air inlet; 5. Furnace body; 6. Heat exchanger; 7. Water supply device; 7-1. Water tank; 7-2. Delivery pipe; 7-3. Nozzle; 7-4. Valve; 8. Air guide channel; 8-1. Vertical partition; 8-2. Air guide plate; 9. Air outlet; 10. Water-absorbing cotton cloth. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0022] like Figures 1-2As shown, this utility model discloses a humidified dense curing barn for tobacco curing, which includes a curing barn body 1. A hot air inlet 4 and a return air inlet are provided on the partition wall between the heating chamber 2 and the tobacco loading chamber 3 of the curing barn body 1. A furnace body 5 and a heat exchanger 6 are provided inside the heating chamber 2. A water replenishment device 7 for spraying water mist onto the heat exchanger 6 is provided inside the heating chamber 2. An air guide channel 8 is provided inside the tobacco loading chamber 3 to guide the hot air towards the loading chamber door. Air outlets 9 are distributed on the side of the air guide channel 8 facing the tobacco. A water supply device 7 is provided inside the air guide channel 8. The structure has multiple absorbent cotton cloths 10. During the tobacco curing stage, the water replenishment device 7 sprays water mist onto the heat exchanger 6's heat sink. The water vapor evaporates through the heat sink and then enters the tobacco loading chamber 3 through the hot air inlet 4 along with the hot air, thereby replenishing and moisturizing the tobacco leaves in the loading chamber. This dynamically replenishes the ambient humidity, slows down the rate of water loss and drying of the tobacco leaves, and is beneficial for maintaining moisture in dense curing barns and coordinating the yellowing and drying of tobacco leaves during the curing process. This ensures the curing quality and economic benefits of tobacco leaves and upper tobacco leaves in arid production areas.

[0023] Furthermore, the water replenishment device 7 includes a water tank 7-1 mounted on the drying chamber body 1. The water tank 7-1 is connected to the heat exchanger 6 via a delivery pipe 7-2. A nozzle 7-3 for spraying water mist onto the heat exchanger fins is located at the outlet of the delivery pipe 7-2. A valve 7-4 is mounted on the delivery pipe 7-2, allowing water to be sprayed onto the heat exchanger fins of the heat exchanger 6 via the nozzle 7-3. Furthermore, a coil is installed in the water tank 7-1, and the exhaust pipe of the heat exchanger 6 is connected to the coil. An external drain pipe is installed on the coil, allowing the waste heat from the exhaust gas to preheat the water in the water tank 7-1, reducing heat loss on the heat exchanger fins. A flow meter is installed on the delivery pipe 7-2, allowing for the measurement of the replenished water volume, which is beneficial for controlling the water supply to the intensive drying chamber.

[0024] Furthermore, the air guide channel 8 includes vertical partitions 8-1 distributed along the longitudinal direction of the tobacco loading chamber 3. Between the vertical partitions 8-1, there are air guide vanes 8-2 inclined towards the door of the tobacco loading chamber. Because when hot air is transporting water vapor, in order to avoid a large amount of water vapor accumulating on the tobacco leaves near the hot air inlet 4, causing uneven humidity of the tobacco leaves, it is necessary to guide the hot air and then exhaust it from the upper or lower side of the tobacco loading chamber 3. The figure shows the upper side, which is a downward airflow type curing barn. The air guide channel 8 can guide the air evenly and also deliver the water vapor in the hot air evenly into the tobacco loading chamber 3, which is conducive to uniform humidification.

[0025] Meanwhile, the absorbent cotton cloth 10 is a long strip and is distributed along the longitudinal direction of the tobacco loading chamber 3 on the air guide plate 8-2. Specifically, the absorbent cotton cloth 10 is fixedly connected to the air guide plate 8-2 by nails or the like. In this way, when the tobacco leaves release a lot of water during the tobacco curing stage, the absorbent cotton cloth 10 can also absorb some of the volatile components of the tobacco leaves. When water needs to be replenished, the volatile components can be returned to the tobacco leaves. While keeping the tobacco moist, the aroma contained in the returned volatile components is also returned to the tobacco leaves, which helps to maintain the aroma of the tobacco leaves and improve the quality of the flue-cured tobacco.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A humidified dense curing barn for flue-cured tobacco, comprising a curing barn body (1), a hot air inlet (4) and a return air inlet provided on the partition wall between the heating chamber (2) and the tobacco loading chamber (3) of the curing barn body (1), and a furnace body (5) and a heat exchanger (6) provided in the heating chamber (2), characterized in that, A water supply device (7) for spraying water mist onto the heat exchanger (6) is provided in the heating chamber (2). A guide channel (8) for guiding hot air toward the door of the smoke loading chamber is provided in the smoke loading chamber (3). An air outlet (9) is provided on the side of the guide channel (8) facing the smoke. Multiple absorbent cotton cloths (10) are provided in the guide channel (8).

2. The intensive curing barn for tobacco curing according to claim 1, characterized in that, The water replenishment device (7) includes a water tank (7-1) on the oven body (1), the water tank (7-1) is connected to the heat exchanger (6) through a conveying pipe (7-2), a nozzle (7-3) for spraying water mist onto the heat exchange fins is provided at the outlet of the conveying pipe (7-2), and a valve (7-4) is provided on the conveying pipe (7-2).

3. The intensive curing barn for tobacco curing according to claim 2, characterized in that, The water tank (7-1) is equipped with a coil, and the exhaust pipe of the furnace body (5) is connected to the coil. An external exhaust pipe is provided on the coil.

4. The intensive curing barn for tobacco curing according to claim 2, characterized in that, A flow meter is installed on the delivery pipe (7-2).

5. The intensive curing barn for tobacco curing according to claim 1, characterized in that, The air guide channel (8) includes vertical partitions (8-1) distributed along the longitudinal direction of the smoke chamber (3), and air guide vanes (8-2) inclined towards the door of the smoke chamber are provided between the vertical partitions (8-1).

6. The intensive curing barn for tobacco curing according to claim 5, characterized in that, The absorbent cotton cloth (10) is a long strip and is distributed along the longitudinal direction of the smoke chamber (3) on the air guide plate (8-2).

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