A circulating air blowing device for tobacco curing room

Abstract

This utility model discloses a circulating air blowing device for a tobacco curing room, including a tobacco loading chamber and a heating chamber. A hot air generator is installed in the heating chamber and is connected to the tobacco loading chamber via a ventilation and dehumidification system. The hot air generator, ventilation and dehumidification system, and control device are electrically connected. The ventilation and dehumidification system includes a first circulating fan located on one side of the bottom of the heating chamber and a second circulating fan located on the outer side of the top of the tobacco loading chamber. The inlet of the first circulating fan is connected to the hot air generator, and its outlet is connected to the first air inlet of the tobacco loading chamber. The inlet of the second circulating fan is connected to the air outlet at the top of the tobacco loading chamber, and its outlet is connected to the second air inlet at the top of the tobacco loading chamber via a circulation pipe. A dehumidification structure is also provided on the circulation pipe. This utility model has a simple structure and low cost, and it can perform circulating dehumidification operation on the top of the tobacco loading chamber, effectively improving the dehumidification effect of the top layer of the curing barn.

Description

Technical Field

[0001] This utility model relates to a circulating air blowing device for tobacco curing rooms, belonging to the field of tobacco curing technology. Background Technology

[0002] The equipment for intensive tobacco curing consists of a loading chamber and a heating chamber. The main equipment includes heating equipment, ventilation and dehumidification equipment, and temperature and humidity control equipment. Its tobacco loading density is more than twice that of ordinary curing barns, with forced ventilation, hot air circulation, and automatic temperature and humidity control. Curing barn structures are classified into upward-flowing and downward-flowing types based on airflow direction. In downward-flowing curing barns, airflow enters from top to bottom, causing the tobacco leaves to yellow and dry from top to bottom. Its advantages include allowing moisture and humidity to sink and drain away smoothly, uniform airflow, small temperature difference between upper and lower layers, and a low rate of waste after curing. However, it generally requires a three-phase 380V power supply, resulting in poor versatility. In upward-flowing curing barns, airflow enters from top to bottom and rises naturally, causing the tobacco leaves to gradually yellow and dry from the leaf tip along the veins and main veins. Its advantages include superior curing quality compared to downward-flowing curing barns, and it uses a single-phase 220V power supply, making it unrestricted by power supply or voltage, easy to build anywhere, low investment cost, and wide applicability. However, during the baking process, moisture and humidity rise and accumulate in the top plate area, resulting in excessive humidity in the top layer. Increasing the number of vents cannot guarantee a good dehumidification effect, and water droplets easily condense on the top plate, causing the proportion of mold and mildew on the upper tobacco leaves to be higher than that of the lower layer. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a circulating air blowing device for tobacco curing rooms, so as to at least solve the problem of poor dehumidification effect of airflow rising curing rooms mentioned in the background art.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A circulating air blowing device for a tobacco curing room includes a tobacco loading chamber and a heating chamber. A hot air generator is installed in the heating chamber and is connected to the tobacco loading chamber via a ventilation and dehumidification system. The hot air generator, the ventilation and dehumidification system, and a control device are electrically connected. The ventilation and dehumidification system includes a first circulating fan located on one side of the bottom of the heating chamber and a second circulating fan located on the outer side of the top of the tobacco loading chamber. A first air inlet is located on the bottom of the tobacco loading chamber near the heating chamber, and second air inlets and outlets are located on opposite sides of the top of the tobacco loading chamber. The air inlet of the first circulating fan is connected to the hot air generator, and its air outlet is connected to the first air inlet of the tobacco loading chamber. The air inlet of the second circulating fan is connected to the air outlet at the top of the tobacco loading chamber, and its air outlet is connected to the second air inlet at the top of the tobacco loading chamber via a circulating pipe. A dehumidification structure is also provided on the circulating pipe.

[0006] Furthermore, the dehumidification structure is a dehumidification tank installed on a circulation pipe, and a desiccant or desiccant is placed inside the dehumidification tank.

[0007] Furthermore, the dehumidification structure is a water vapor separation device.

[0008] Furthermore, the top of the smoke chamber is inclined downwards on the side opposite to the air outlet.

[0009] Furthermore, a corrugated guide plate is provided at the top of the smoke chamber, and the guide groove of the corrugated guide plate is arranged along the airflow direction.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model has a simple structure and low cost. It improves upon the existing airflow-rising curing barn by providing a second air inlet and an air outlet on two opposite sides of the top of the tobacco loading chamber. A second circulating fan is installed at the air outlet, and the air outlet of the second circulating fan is connected to the second air inlet through a circulation pipe. A dehumidification structure is also provided on the circulation pipe. The second circulating fan can perform suction operation, quickly drawing in the humid air in the top area of ​​the tobacco loading chamber into the circulation pipe. After the dehumidification structure removes the moisture from the air, it is recirculated back into the top of the tobacco loading chamber for circulating dehumidification. This effectively solves the problem of excessive humidity and poor dehumidification effect at the top of the airflow-rising curing barn, which makes the upper tobacco leaves prone to mold and mildew.

[0012] 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

[0013] 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:

[0014] Figure 1 This is a schematic diagram of the structure of a circulating air blowing device for a tobacco curing room provided in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the waveform guide plate.

[0016] In the diagram: 1. Smoke chamber; 101. First air inlet; 102. Second air inlet; 103. Air outlet; 2. Heating chamber; 3. Hot air generator; 4. Ventilation and dehumidification equipment; 401. First circulating fan; 402. Second circulating fan; 403. Circulation duct; 404. Dehumidification structure; 5. Control device; 501. Temperature sensor; 502. Humidity sensor; 503. Controller; 6. Waveform guide plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] like Figures 1-2 As shown, the first embodiment of this utility model provides a circulating air blowing device for a tobacco curing room, including a tobacco loading chamber 1 and a heating chamber 2. A hot air generator 3 is installed in the heating chamber 2. The hot air generator 3 is connected to the tobacco loading chamber 1 via a ventilation and dehumidification device 4. The hot air generator 3, the ventilation and dehumidification device 4, and the control device 5 are electrically connected. The hot air generator 3 includes a furnace body and a heat exchanger, and heats the air according to the requirements of the tobacco curing process. The ventilation and dehumidification equipment 4 is used to circulate heated air between the heating chamber 2 and the tobacco loading chamber 1 and to achieve air exchange between the inside and outside of the tobacco loading chamber 1, maintaining the temperature and humidity required for the tobacco drying process in the tobacco loading chamber 1. The ventilation and dehumidification equipment 4 includes a first circulating fan 401 located on one side of the bottom of the heating chamber 2 and a second circulating fan 402 located on the outer side of the top of the tobacco loading chamber 1. A first air inlet 101 is provided on the bottom of the tobacco loading chamber 1 near the heating chamber 2, and a second air inlet 102 and an air outlet 103 are provided on two opposite sides of the top of the tobacco loading chamber 1. The air inlet of the first circulating fan 401 is connected to the hot air generator 3, and the air outlet is connected to the first air inlet 101 of the tobacco loading chamber. The first circulating fan 401 can perform air supply operation, which can deliver heated air to the tobacco loading chamber 1, so that the hot air flow in the tobacco loading chamber 1 rises naturally, realizing the tobacco drying process. The air inlet of the second circulating fan 402 is connected to the air outlet 103 at the top of the tobacco loading chamber. The air outlet is connected to the second air inlet 102 at the top of the tobacco loading chamber through the circulation pipe 403. A dehumidification structure 404 is also provided on the circulation pipe 403. The second circulating fan 402 can perform air suction operation, quickly sucking the humid air in the top area of ​​the tobacco loading chamber 1 into the circulation pipe 403. After the dehumidification structure 404 removes the moisture in the air, it is then circulated back into the top of the tobacco loading chamber 1. This effectively solves the problem of excessive humidity at the top of the airflow rising type curing barn and poor dehumidification effect, which makes the upper tobacco leaves prone to mold and mildew.

[0019] The dehumidification structure 404 can be a dehumidification tank installed on the circulation pipe 403. The dehumidification tank contains desiccants, desiccants, such as quicklime, charcoal, calcium chloride, lithium chloride, or triethylene glycol, which can adsorb water vapor in the air, thereby reducing humidity.

[0020] Alternatively, the dehumidification structure 404 can be a water vapor separation device, which separates water and air in the air to reduce the humidity in the air.

[0021] The top of the smoke chamber 1 is tilted downwards on the side opposite to the air outlet 103 to facilitate airflow and improve the dehumidification effect of the top layer of the smoke chamber. Specifically, the tilt angle of the top of the smoke chamber 1 is 5-15 degrees.

[0022] A corrugated guide plate 6 is also provided at the top of the smoke chamber 1. The guide groove of the corrugated guide plate 6 is set along the airflow direction, which makes it easier for the airflow to flow.

[0023] The control device 5 includes a temperature sensor 501, a humidity sensor 502 installed in the tobacco curing barn 1, and a controller 503 electrically connected to both. The controller 503 controls the temperature sensor 501 and the humidity sensor 502 to monitor the temperature and humidity in the tobacco curing barn 1, respectively. The controller 503 includes a touch panel, a data processing module, a control module, and a data storage module. The touch panel is electrically connected to the data storage module, the data storage module is electrically connected to the data processing module, and the data processing module is electrically connected to the control module. These are all conventional devices used in existing tobacco curing barns and will not be described in detail here.

[0024] Working principle and process of the device:

[0025] The preset temperature is input into the touch panel of the controller 403 and stored in the data storage module. The controller 403 controls the hot air generator 3 to heat the air, which is then sent into the tobacco curing barn 1 by the first circulating fan 401 to start the tobacco curing process. During this process, the temperature sensor 401 senses the internal temperature of the tobacco curing barn 1 and transmits the temperature data to the data storage module. The data module compares the data, and when the temperature is lower than the preset temperature, the control module sends a signal to the heater 2 to heat the tobacco curing barn 1. When the temperature reaches the preset temperature, the control module sends a signal to the heater 2 to stop heating. This design can effectively monitor and intelligently control the temperature inside the tobacco curing barn 1, saving manpower and electricity.

[0026] Meanwhile, humidity sensor 502 monitors the humidity inside the tobacco curing barn 1. The second circulating fan 402 quickly draws the humid air from the top area of ​​the tobacco loading chamber 1 into the circulating pipe 403. After the dehumidification structure 404 removes the moisture from the air, it is then circulated back into the top of the tobacco loading chamber 1.

[0027] 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 circulating air blowing device for a tobacco curing room, comprising a tobacco loading chamber (1) and a heating chamber (2), wherein a hot air generator (3) is provided in the heating chamber (2), the hot air generator (3) is connected to the tobacco loading chamber (1) through a ventilation and dehumidification device (4), and the hot air generator (3), the ventilation and dehumidification device (4) are electrically connected to a control device (5), characterized in that, The ventilation and dehumidification equipment (4) includes a first circulating fan (401) located on one side of the bottom of the heating chamber (2) and a second circulating fan (402) located on the outer side of the top of the smoke loading chamber (1). A first air inlet (101) is provided on the side of the bottom of the smoke loading chamber (1) near the heating chamber (2). A second air inlet (102) and an air outlet (103) are provided on two opposite sides of the top of the smoke loading chamber (1). The air inlet end of the first circulating fan (401) is connected to the hot air generator (3), and the air outlet end is connected to the first air inlet (101) of the smoke loading chamber. The air inlet end of the second circulating fan (402) is connected to the air outlet (103) at the top of the smoke loading chamber. The air outlet end is connected to the second air inlet (102) at the top of the smoke loading chamber through the circulating pipe (403). A dehumidification structure (404) is also provided on the circulating pipe (403).

2. The circulating air blowing device for tobacco drying room according to claim 1, characterized in that, The dehumidification structure (404) is a dehumidification tank installed on the circulation pipe (403), and a desiccant or moisture absorbent is placed inside the dehumidification tank.

3. The circulating air blowing device for tobacco drying room according to claim 1, characterized in that, The dehumidification structure (404) is a water vapor separation device.

4. The circulating air blowing device for a tobacco curing room according to any one of claims 1-3, characterized in that, The top of the smoke chamber (1) is tilted downwards on the side opposite to the air outlet (103).

5. The circulating air blowing device for tobacco drying room according to claim 4, characterized in that, A corrugated guide plate (6) is also provided on the top of the smoke chamber (1), and the guide groove of the corrugated guide plate (6) is set along the airflow direction.

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