Uniform air supply device of koji room with cooperation of multi-stage flow guide pore plate and internal circulation

Abstract

The utility model relates to the technical field of yeast fermentation ventilation, and discloses a multistage flow guide pore plate and internal circulation coordinated yeast room uniform air supply device which comprises an air supply assembly and an internal circulation assembly which are mounted in a yeast room, the air supply assembly comprises an air uniformizing module mounted at an air inlet of the koji room and an air outlet module mounted at an air outlet of the koji room; the whole air uniformizing module is of a conical structure, and an air supply hole plate net is installed at the air outlet end of the air uniformizing module. The interior of the air uniformizing module is divided into four air supply areas, a plurality of flow guide plates are installed in the air supply areas at equal intervals, and the sizes of the flow guide plates are gradually decreased in a gradient mode according to the airflow direction. The internal circulation assembly is arranged in the center of the top of the koji room. The flow guide plates in gradient design are combined with the pore plate net for throttling and speed reduction, so that layered regulation and control, accurate flow guide and uniform speed reduction of airflow are realized, and the problem of non-uniform air supply speed in the prior art is solved; outer circulation air supply is matched with inner circulation, double-circulation regulation and control are achieved, and temperature and humidity layering is reduced.

Description

A multi-stage guide plate and internal circulation coordinated uniform air supply device for curved rooms Technical Field

[0001] This utility model relates to the field of ventilation technology for Daqu fermentation, and in particular to a uniform air supply device for Daqu fermentation rooms that combines multi-stage guide plate and internal circulation. Background Technology

[0002] Ventilation is crucial for the fermentation of Daqu (a type of starter culture). During fermentation, Daqu generates a large amount of heat. If heat is not dissipated in time, the temperature will become too high, affecting the normal growth of microorganisms and even causing the Daqu to "burn." Ventilation lowers the temperature of the Daqu, preventing localized overheating and ensuring a suitable growth environment for microorganisms. It also promotes more uniform temperature throughout the Daqu, providing stable conditions for microorganisms. Furthermore, proper ventilation accelerates the evaporation of moisture from the Daqu surface, preventing mold and spoilage caused by excessive humidity. Especially in humid environments, ventilation removes moisture, keeping the Daqu dry. Moreover, ventilation provides essential oxygen for microorganisms. Most microorganisms in Daqu are aerobic or facultative anaerobic bacteria. Sufficient oxygen promotes their respiration and metabolic activities, increases the activity of yeast and other microorganisms, accelerates fermentation, and can even alter microbial metabolic pathways by regulating oxygen supply, affecting the flavor and quality of the Daqu. In addition, ventilation helps optimize the microbial community structure of Daqu. It improves the microbial living environment, promotes the growth of beneficial microorganisms, inhibits the reproduction of harmful microorganisms, and brings the types and quantities of microorganisms to an ideal state, thereby improving the fermentation quality of the Daqu.

[0003] Currently, ventilation is commonly achieved by opening windows. Although this can also serve the purpose of air supply, the ventilation volume and time are not precisely controlled. It is easily affected by weather and human factors, resulting in fluctuations in temperature and humidity. The ventilation efficiency is low and it is difficult to ensure the uniformity of the fermentation room environment, thus affecting the quality of the fermentation process. Summary of the Invention

[0004] The purpose of this invention is to provide a curved room uniform air supply device that combines a multi-stage guide plate with internal circulation. This device combines a gradient-designed guide plate with a perforated plate mesh for throttling and speed reduction to achieve airflow stratification control, precise airflow guidance, and uniform speed reduction, thus solving the problem of uneven airflow speed in traditional air supply. External circulation air supply combined with internal circulation achieves dual circulation control, reducing temperature and humidity stratification.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A curved room uniform air supply device with multi-stage guide plate and internal circulation working together includes an air supply system and an internal circulation system installed in the curved room;

[0007] The overall air supply system includes an air distribution module installed at the air inlet of the curved room and an air outlet module installed at the air outlet of the curved room; the air distribution module is generally conical in shape, with the top of the conical structure being the air inlet and the bottom of the conical structure being the air outlet, and an air supply perforated plate mesh is installed on the air outlet of the air distribution module.

[0008] The air distribution module is divided into four air supply zones, which are shaped like diagonal triangles. Several guide vanes are installed at equal intervals within each air supply zone, and the size of the guide vanes decreases in a gradient according to the airflow direction.

[0009] The internal circulation system is installed in the center of the top of the flute, and the internal circulation system is implemented by two air blowers.

[0010] Furthermore, the air inlet of the air distribution module is installed on the air inlet inside the flute, and a valve is installed on the air inlet, which is connected to the air inlet pipe.

[0011] Furthermore, gaps are left between the two sides of the air supply perforated plate mesh and the air distribution module to form slots.

[0012] Furthermore, the air outlet module includes an air outlet duct and an exhaust fan installed at the end of the air outlet duct.

[0013] Furthermore, depending on the size of the room, 2 to 4 internal circulation systems are installed.

[0014] Furthermore, the internal circulation system is implemented using two air blowers and a connecting rod that rigidly connects the air blowers.

[0015] Furthermore, the curved room is equipped with an anemometer and a temperature and humidity meter.

[0016] This utility model has the following beneficial effects:

[0017] (1) By gradually guiding the airflow through the gradient-decreasing guide plate, dead air angles are eliminated, and precise layered control of the air supply path is achieved; by using dense small holes for throttling, high-speed airflow is transformed into low-speed uniform flow, avoiding temperature and humidity fluctuations caused by local turbulence; compared with the traditional single guide plate structure, the consistency of the microbial fermentation environment in the fermentation room is ensured.

[0018] (2) The top internal circulation system actively extracts high humidity and high temperature gas, mixes it with fresh air and then delivers it to the second layer to reduce the temperature and humidity gradient between the upper and lower layers; thus avoiding localized mold or dryness problems.

[0019] (3) The external circulation air supply and the internal circulation replenishment work together to reduce the number of times the fan starts and stops frequently and extend the equipment life.

[0020] (4) The three-in-one approach of “flow guidance + speed reduction + dynamic uniformity” solves the pain points of uneven airflow distribution, lagging regulation and high energy consumption of traditional fermentation room air supply devices, and provides a highly stable environmental regulation solution for fermentation process. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the air supply structure of the curved room of this utility model.

[0022] Figure 2 is a schematic diagram of the air supply structure of the guide vane.

[0023] Figure 3 is a schematic diagram of the air supply perforated plate mesh.

[0024] Figure 4 is a schematic diagram of the overall structure of the internal circulation system.

[0025] The diagram is labeled as follows: 10. Overall air supply; 11. Air distribution module; 12. Air outlet module; 13. Valve; 14. Air inlet duct; 15. Air supply perforated plate; 16. Air supply area; 17. Air supply inlet; 18. Slotted opening; 19. Guide plate; 20. Overall internal circulation system; 21. Air supply unit; 22. Connecting rod; 30. Curved room; 31. Door; 32. Insulation layer; 40. Large curved room. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] As shown in Figure 1, the uniform air supply device for a curved chamber 30 with multi-stage guide plate and internal circulation coordination disclosed in this embodiment includes an air supply system 10 and an internal circulation system 20 installed in the curved chamber 30.

[0028] The fermentation room 30 is a rectangular room with a large, openable door 31 for entry and exit. One wall of the fermentation room 30 has an air inlet, and the other wall has an air outlet, creating a cross-ventilation effect. The walls of the fermentation room 30 are made of stainless steel, with an inner insulation layer 32 to effectively maintain a constant temperature. The floor is covered with insulating stones to create a specific environment for the fermentation process; the entire fermentation unit is evenly placed in the center of the fermentation room 30.

[0029] The overall air supply system 10 includes an air distribution module 11 installed at the air inlet and an air outlet module 12 installed at the air outlet. The air distribution module 11 has a conical structure, with the top of the conical structure being the air inlet and the bottom being the air outlet, achieving a small-aperture air intake. After being guided and distributed within the air distribution module 11, the air is then discharged into the curing chamber 30 through a large-aperture air outlet. The air inlet of the air distribution module 11 is installed on the air inlet in the curing chamber 30, and a valve 13 is installed on the air inlet, which is connected to the air intake pipe 14. An air outlet plate mesh 15 is installed on the air outlet of the air distribution module 11, as shown in Figure 2. The air outlet plate mesh 15 disperses the concentrated airflow into small jets by throttling, and the superposition and collision of the jets achieve gas mixing and deceleration. This achieves uniform airflow distribution while reducing the wind speed near the curing blocks, preventing moisture loss from the surface of the curing blocks due to excessive wind speed, which would affect the formation of the curing mycelium. Meanwhile, gaps are left between the two sides of the air supply perforated plate mesh 15 and the air distribution module 11, forming slotted openings 18. Some airflow will be ejected from the slotted openings 18 to quickly regulate the environment of the non-fermentation block area within the fermentation chamber 30. At the same time, the slotted openings 18 provide a pressure relief function, allowing the airflow to precisely regulate the fermentation block area in a uniform and gentle manner. This improves the uniformity of the environment within the fermentation chamber 30, creating more favorable conditions for fermentation and effectively ensuring the smooth progress of the fermentation process.

[0030] The air distribution module 11 is divided into four air supply zones 16, which are shaped like diagonal triangles. This unique design helps to achieve a more efficient and uniform air supply effect, creating a stable air flow environment for the fermentation room 30. Each air supply zone 16 is independently equipped with an air inlet 17, which is equipped with a grid baffle, which can effectively block foreign objects from entering and also play a preliminary role in rectifying the airflow.

[0031] As shown in Figure 3, several guide vanes 19 are installed within the air supply area 16. The size of the guide vanes 19 decreases in a gradient according to the airflow direction (diagonal triangular area). The guide vanes 19 are equidistantly distributed, with their ends connecting to the inclined surface to avoid turbulence and optimize the airflow direction, allowing for precise guidance and regulation of the airflow as it passes through. Each guide vane 19 is equidistant from each other and from the air inlet 17, ensuring uniform intervention of the airflow in the initial stage. The guide vanes 19 are securely connected to the inclined surface of the air supply area 16, which not only effectively avoids turbulence but also further optimizes the airflow direction, delivering it to all parts of the ventilation room 30 in a more rational manner, thereby significantly improving the stability and efficiency of the entire air supply system.

[0032] Uniform air delivery, precise airflow guidance, and uniform speed reduction are achieved through multi-stage guide plates and air supply plate mesh 15, solving the problem of uneven airflow speed in traditional air supply systems.

[0033] The air outlet module 12 is installed on the outlet air of the flute 30. The air outlet module 12 can be implemented by means of a duct and an exhaust fan installed at the end of the duct.

[0034] To significantly improve the uniformity of the environment inside the curing room 30, the internal circulation system 20 is installed on the top of the curing room 30. Depending on the size of the curing room 30, 2 to 4 such systems are installed. The internal circulation system 20 is implemented by two air blowers 21 and a connecting rod 22 that rigidly connects the air blowers 21. The connecting rod 22 ensures that the positions of the two air blowers 21 are relatively fixed.

[0035] The curing chamber 30 is equipped with an anemometer and a temperature and humidity meter. By collecting and analyzing temperature, humidity and anemometer data at different times and locations, the distribution of environmental parameters within the curing chamber 30 can be more thoroughly understood. This allows for further analysis of the dynamic changes in the uniformity of the environment within the curing chamber 30, providing strong data support for subsequent process optimization.

[0036] First, place the entire curved block inside the curved chamber 30. Then, adjust the pipe valve 13 and close the double doors of the curved chamber 30. At this time, air enters the air supply area 16 through the air inlet pipe 14 at a constant flow rate. Relying on the unique air supply principle, stable air supply is achieved inside the curved chamber 30, effectively optimizing the air distribution inside the curved chamber 30 and improving the overall air supply effect.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A curved room uniform air supply device with multi-stage guide plate and internal circulation working in synergy, characterized in that: The system includes a main air supply system and an internal circulation system installed inside the curving room. The main air supply system includes an air distribution module installed at the air inlet of the curving room and an air outlet module installed at the air outlet of the curving room. The air distribution module has a conical structure, with the top of the conical structure being the air inlet and the bottom being the air outlet. An air outlet plate is installed on the air outlet of the air distribution module. The air distribution module is divided into four air supply zones, which are diagonally triangular in shape. Several guide vanes are installed at equal intervals within each air supply zone, and the size of the guide vanes decreases in a gradient according to the airflow direction. The internal circulation system is installed in the center of the top of the curving room and is implemented using two air blowers.

2. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: The air inlet of the air distribution module is installed on the air inlet in the curving room. A valve is installed on the air inlet and connected to the air inlet pipe.

3. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: The air supply perforated plate mesh has gaps between its two sides and the air distribution module to form slots.

4. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: The air outlet module includes an air outlet duct and an exhaust fan installed at the end of the air outlet duct.

5. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: Depending on the size of the room, 2 to 4 internal circulation systems are installed.

6. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: The internal circulation system is implemented using two air blowers and a connecting rod that rigidly connects the air blowers.

7. The curved room uniform air supply device with multi-stage guide plate and internal circulation synergy as described in claim 1, characterized in that: The flute room is equipped with an anemometer and a temperature and humidity meter.

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