Circulating ventilation device in cigar air-curing room

By integrating air intake and exhaust components with an internal circulation ventilation device monitored by the Internet of Things, the problem of uneven temperature and humidity in the cigar drying room has been solved, achieving efficient temperature and humidity control, improving the yield rate and reducing the loss rate and maintenance costs.

CN224268268UActive Publication Date: 2026-05-26SHANDONG WEIFANG TOBACCO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG WEIFANG TOBACCO CO LTD
Filing Date
2025-05-08
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional cigar drying rooms suffer from uneven temperature and humidity distribution and low control precision, resulting in high tobacco leaf loss and insufficient yield.

Method used

By adopting integrated air intake and exhaust components and combining IoT temperature and humidity monitoring, the air in the drying room is intelligently circulated and the temperature and humidity are uniformly controlled. Through the internal circulation ventilation device, the central controller and IoT temperature and humidity measuring instrument are used to adjust the fan and ventilation window in real time to keep the temperature and humidity difference within 3℃.

Benefits of technology

Reduce tobacco leaf loss rate to below 5%, increase yield to 88%, extend equipment lifespan and reduce maintenance costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224268268U_ABST
    Figure CN224268268U_ABST
Patent Text Reader

Abstract

According to the circulating ventilation device in the cigar air-curing room, an air-curing room body is a cuboid steel structure frame, the outer side wall of the air-curing room body is provided with an observation window and a controllable ventilation window, the observation window is made of double-layer tempered glass, and the state of internal tobacco leaves can be conveniently monitored in real time; the controllable ventilation window is of an electric shutter structure, and the opening and closing angle is controlled through linkage of a central controller. A plurality of layers of adjustable standing supports are installed in the air-curing room body, and the intervals between the supports are adjusted through sliding rails and locking bolts so as to meet the air-curing requirements of tobacco leaves of different specifications.
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Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, specifically to a circulating ventilation device for a cigar drying room. Background Technology

[0002] In the cigar drying process, temperature, humidity, and ventilation are key factors affecting the quality of tobacco leaves. Traditional drying rooms rely heavily on natural ventilation, which suffers from uneven temperature and humidity distribution and low control precision, resulting in high tobacco leaf loss rates and insufficient yield. While some existing technologies incorporate ventilation devices, they generally suffer from drawbacks such as complex structures, high energy consumption, and the inability to achieve precise internal circulation control. Utility Model Content

[0003] The purpose of this utility model is to provide a circulating ventilation device for a cigar drying room. By integrating air intake and exhaust components and combining IoT temperature and humidity monitoring, it can achieve intelligent air circulation and uniform temperature and humidity control in the drying room.

[0004] include:

[0005] The main body of the drying room is equipped with an observation window and a controllable ventilation window on the outside, and a static support for cigar processing is installed inside the main body of the drying room.

[0006] An extension plate is provided and installed on the outer support column of the main body of the drying room for the extension assembly of the outer plate;

[0007] An upper fixed beam is installed above the main body of the drying room. A matching groove is provided at the connection between the upper fixed beam and the main body of the drying room, and an upper protective plate is provided inside the matching groove.

[0008] An internal circulation ventilation system is installed on the inner wall of the main body of the drying room, including an air intake system and an exhaust system;

[0009] The air intake assembly includes an air exchange duct, a central controller, a fixing buckle, an external ventilation belt, a built-in fan, a filter belt, and an external fixing plate. The external fixing plate is attached to the inner wall of the drying room main body. The external ventilation belt is slidably disposed on the inner side of the external fixing plate. The built-in fan is connected to the bracket of the inner wall of the drying room main body through the fixing buckle. The filter belt connects the air exchange duct and the built-in fan. The air exchange duct is equipped with a central controller.

[0010] The exhaust assembly includes a negative pressure fan, a mounting beam, and an output exhaust fan. The mounting beam is located on the top of the main body of the drying room, and the negative pressure fan and multiple output exhaust fans are evenly distributed on the mounting beam.

[0011] Preferably, the right side of the external ventilation belt is provided with a driving component, including a rear lead screw, a built-in drive oil pump, a balance block and a traction shaft. The traction shaft is fixedly connected to the outer wall of the external ventilation belt, the built-in drive oil pump is fixedly supported by the rear lead screw, and balance blocks are provided on both sides of its output shaft.

[0012] Preferably, a limiting stop is provided on the outer side of the traction shaft to limit the axial displacement of the traction shaft.

[0013] Preferably, the external ventilation strip is rectangular, with multiple evenly distributed air exchange holes at its center.

[0014] Preferably, the outer fixing plate is fixed to the inside of the controllable ventilation window, and the outer fixing plate is provided with ventilation holes.

[0015] Preferably, the central controller is connected to an IoT temperature and humidity measuring instrument for real-time control of the opening and closing of the ventilation duct and the air volume.

[0016] Preferably, the stationary support is a multi-layer adjustable structure, and the spacing between the layers is adjusted by slide rails and locking bolts.

[0017] Preferably, the controllable ventilation window adopts an electric louver structure, and the opening and closing angle is controlled in conjunction with the central controller.

[0018] Preferably, the filter belt is a detachable multi-layer composite filter, including an activated carbon layer and a HEPA filter layer.

[0019] Preferably, the blade angle of the output exhaust fan is adjustable, and dynamic wind speed matching is achieved through a central controller.

[0020] Compared with the prior art, this utility model provides a circulating ventilation device for a cigar drying room, which has the following beneficial effects:

[0021] 1. This device uses an internal circulation ventilation system to reduce the temperature and humidity difference in the drying room to within 3°C, and reduces the tobacco leaf loss rate to below 5%.

[0022] 2. During use, the device extends its service life and reduces maintenance costs by incorporating a removable filter belt and an intelligent control module.

[0023] 3. In actual use, the yield of finished cigars increased from 73.6% to 88%, resulting in significant economic benefits. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1This is a structural schematic diagram of a specific embodiment of the present utility model;

[0026] Figure 2 This is a top view of the internal structure in a specific embodiment of the present invention;

[0027] Figure 3 This is a partial enlarged view of point A in a specific embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the component structure of the external ventilation belt in a specific embodiment of this utility model.

[0029] In the diagram: 1. Main body of the drying room; 2. Extendable cardboard plate; 3. Observation window; 4. Controllable ventilation window; 5. Upper fixed beam; 6. Matching slot; 7. Upper protective plate; 8. Inner limit block; 101. Ventilation duct; 102. Central controller; 103. Fixing buckle; 104. External ventilation belt; 105. Built-in fan; 106. Filter belt; 107. External fixed plate; 201. Negative pressure fan; 202. Mounting crossbeam; 203. Output exhaust fan; 301. Rear lead screw; 302. Built-in drive oil pump; 303. Balance block; 304. Traction shaft; 305. Limit stop bar; 401. Exchange air hole. Detailed Implementation

[0030] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0032] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0035] Example 1:

[0036] like Figure 1-4 As shown, the main body 1 of the drying room is a rectangular steel frame structure. The outer wall is equipped with an observation window 3 and a controllable ventilation window 4. The observation window uses double-layered tempered glass for real-time monitoring of the tobacco leaves inside. The controllable ventilation window 4 is an electric louver structure, with its opening and closing angle controlled by a central controller 102. The main body 1 of the drying room is equipped with multiple layers of adjustable stationary supports. The spacing between the support layers is adjusted via slide rails and locking bolts to accommodate the drying needs of tobacco leaves of different specifications.

[0037] The expansion plate 2 is fixed to the outer support column of the main body 1 of the drying room by bolts, and is used for the assembly of external humidifiers or auxiliary temperature control equipment. The upper fixing beam 5 is welded to the top of the main body 1 of the drying room, and a matching groove 6 is provided at the connection between the beam and the main body. The upper protective plate 7 is embedded in the inner side of the groove to enhance the stability of the top structure.

[0038] Furthermore, regarding the air intake components: the outer fixing plate 107 is welded to the inner side of the controllable ventilation window 4, and ventilation holes are evenly distributed on the plate. The outer ventilation strip 104 is a rectangular aluminum alloy frame, which is slidably installed in the inner slide rail of the outer fixing plate 107, and has multiple 10mm diameter exchange air holes 401 at its center. The built-in fan 105 is connected to the inner wall support of the drying room body 1 through the fixing buckle 103. The fan outlet is sealed to the ventilation duct 101, which extends into the drying room and evenly distributes the air outlets. The filter strip 106 is a detachable multi-layer composite filter, including an outer activated carbon adsorption layer and an inner HEPA high-efficiency filter layer, and is installed at the air intake end of the built-in fan 105. The central controller 102 is fixed to the outside of the ventilation duct 101 and is connected to the IoT temperature and humidity measuring instrument through a wireless module to receive temperature and humidity data in real time and adjust the fan speed and the opening and closing of the ventilation window.

[0039] Furthermore, regarding the exhaust system: the mounting beam 202 is bolted to the top of the drying room main body 1. The negative pressure fan 201 is installed at the center of the beam, and six output exhaust fans 203 are evenly distributed around it. The blade angle of each exhaust fan is adjusted by a stepper motor. After the negative pressure fan 201 is started, it forms a directional airflow through the output exhaust fans 203 to quickly expel moisture.

[0040] Furthermore, regarding the operating mechanism of the drive component: The drive component, including a rear lead screw 301, a built-in drive oil pump 302, a balance block 303, and a traction shaft 304, is connected to the right side of the external ventilation belt 104. The traction shaft 304 is welded and fixed to the outer wall of the external ventilation belt 104. The built-in drive oil pump 302 is fixed to the inner wall of the drying room body 1 via the rear lead screw 301. Its output shaft drives the traction shaft 304 to move horizontally, thereby adjusting the sliding position of the external ventilation belt 104 to control the air intake. A limit stop 305 is provided on the outer side of the traction shaft 304 to prevent axial displacement from exceeding the limit.

[0041] Example 2:

[0042] The working process of this device is as follows:

[0043] Start-up phase: Set the target temperature and humidity range, such as temperature 22-25℃ and humidity 65-70%, through the central controller 102. The IoT temperature and humidity measuring instrument collects data in the drying room in real time and transmits it to the central controller.

[0044] Air intake control: If insufficient humidity is detected, the central controller 102 starts the built-in fan 105. Outside air enters through the air exchange holes 401 of the external ventilation belt 104, is purified by the filter belt 106, and is evenly delivered into the drying room through the ventilation pipe 101. At the same time, the drive component adjusts the sliding position of the external ventilation belt 104 through the traction shaft 304 to increase or decrease the air intake volume.

[0045] Exhaust control: When humidity is too high, the central controller 102 starts the negative pressure fan 201 and adjusts the blade angle of the output exhaust fan 203 to accelerate the removal of moisture. The controllable ventilation window 4 opens simultaneously to a 30° angle to assist air convection.

[0046] Dynamic balancing: The central controller 102 dynamically adjusts the fan speed, exhaust fan angle and ventilation window opening and closing based on real-time data to keep the temperature and humidity difference in the drying room within 3℃.

[0047] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0048] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A circulating ventilation and air exchange device for a cigar drying room, characterized in that, include: The main body of the drying room is equipped with an observation window and a controllable ventilation window on the outside, and a static support for cigar processing is installed inside the main body of the drying room. An extension plate is provided and installed on the outer support column of the main body of the drying room for the extension assembly of the outer plate; An upper fixed beam is installed above the main body of the drying room. A matching groove is provided at the connection between the upper fixed beam and the main body of the drying room, and an upper protective plate is provided inside the matching groove. An internal circulation ventilation system is installed on the inner wall of the main body of the drying room, including an air intake system and an exhaust system; The air intake assembly includes an air exchange duct, a central controller, a fixing buckle, an external ventilation belt, a built-in fan, a filter belt, and an external fixing plate. The external fixing plate is attached to the inner wall of the drying room main body. The external ventilation belt is slidably disposed on the inner side of the external fixing plate. The built-in fan is connected to the bracket of the inner wall of the drying room main body through the fixing buckle. The filter belt connects the air exchange duct and the built-in fan. The air exchange duct is equipped with a central controller. The exhaust assembly includes a negative pressure fan, a mounting beam, and an output exhaust fan. The mounting beam is located on the top of the main body of the drying room, and the negative pressure fan and multiple output exhaust fans are evenly distributed on the mounting beam.

2. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The right side of the external ventilation belt is provided with a drive component, including a rear lead screw, a built-in drive oil pump, a balance block and a traction shaft. The traction shaft is fixedly connected to the outer wall of the external ventilation belt. The built-in drive oil pump is fixedly supported by the rear lead screw, and balance blocks are provided on both sides of its output shaft.

3. The circulating ventilation device for a cigar drying room according to claim 2, characterized in that, A limit stop is provided on the outside of the traction shaft to limit the axial displacement of the traction shaft.

4. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The external ventilation belt is rectangular, with multiple evenly distributed air exchange holes at its center.

5. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The outer fixing plate is fixed to the inside of the controllable ventilation window, and the outer fixing plate is provided with ventilation holes.

6. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The central controller is connected to an IoT temperature and humidity measuring instrument and is used to regulate the opening and closing of the ventilation duct and the air volume in real time.

7. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The stationary support is a multi-layer adjustable structure, and the spacing between the layers is adjusted by slide rails and locking bolts.

8. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The controllable ventilation window adopts an electric louver structure, and its opening and closing angle is controlled in conjunction with the central controller.

9. The circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The filter belt is a detachable multi-layer composite filter, including an activated carbon layer and a HEPA filter layer.

10. A circulating ventilation device for a cigar drying room according to claim 1, characterized in that, The blade angle of the output exhaust fan is adjustable, and dynamic wind speed matching is achieved through the central controller.