Space transfer device capable of effectively reducing spreading of mould test strains
Through the intelligent air circulation regulation system and local airflow control unit, the problems of uneven spread of mold, cross-contamination and complex maintenance in the mold test equipment are solved, efficient and accurate mold control and management are achieved, and the stability of the laboratory environment and data reliability are improved.
Patent Information
- Application Number
- CN202422020087.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Traditional mold testing equipment has problems such as uneven local concentration, cross-contamination of airflow, complex equipment maintenance and insufficient diffusion control accuracy in preventing the spread of mold strains.
The intelligent air circulation regulation system, multi-layer filtration device and local airflow control unit are adopted, combined with sensors and feedback systems to achieve precise control of mold concentration and airflow.
It significantly improves the accuracy of mold control, reduces equipment maintenance costs, improves the stability of the laboratory environment, and improves the reliability and intelligence of experimental results.
Smart Images

Figure CN223255207U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mold testing, and in particular relates to a space transfer device that effectively reduces the diffusion of mold test strains. Background Art
[0002] In mold testing, especially in laboratory-based mold culture and propagation experiments, mold control and management are crucial. Traditional mold testing equipment typically includes incubators, culture media, and air circulation systems. However, these devices have some key technical issues, particularly in preventing the spread of mold species.
[0003] A related prior art is an "air filtration and airflow control system," which uses a high-efficiency air filter and a device to regulate airflow to control the concentration of mold spores in the air and thereby reduce the spread of mold.
[0004] Through the above analysis, the problems and defects of the existing technology are as follows:
[0005] (1) Uneven local mold concentration: Traditional systems may not be able to effectively control the local concentration of mold in the air, resulting in uneven distribution of mold in the experimental area.
[0006] (2) Airflow interference and cross contamination: When multiple experimental equipment are running at the same time, the problems of airflow cross and contamination are difficult to solve, especially in a large laboratory environment.
[0007] (3) Complex equipment maintenance: Existing airflow control systems and filters require regular maintenance and replacement, which increases the complexity and cost of operations.
[0008] (4) Insufficient diffusion control accuracy: The diffusion control accuracy of traditional systems is low, which may lead to errors in mold test results. Utility Model Content
[0009] In view of the problems existing in the prior art, the utility model provides a spatial transfer device which can effectively reduce the spread of fungal test strains.
[0010] The utility model is realized in this way: a space transfer device that effectively reduces the spread of mold test strains includes:
[0011] Housing, air flow regulator, air flow distributor, multi-layer filter device, air flow control unit, display, sensor module, control unit, adjustable air flow port, fan, air flow guide device;
[0012] An air circulation regulator is fixed to the left end of the casing by screws; an air flow distributor is fixed to the left bottom of the casing by screws; a multi-layer filtering device is fixed to the center of the casing by screws; an air flow control unit is fixed to the right end of the casing by screws; a display is embedded in the center of the air circulation regulator; and a sensor module is provided at the right bottom of the air circulation regulator.
[0013] Furthermore, a control unit is provided at the right end of the air circulation regulator.
[0014] Furthermore, an adjustable air flow port is provided above the air flow distributor.
[0015] Furthermore, a fan is embedded in the center of the air flow distributor.
[0016] Furthermore, an airflow guide device is provided below the airflow distributor.
[0017] In combination with the above technical solutions and the technical problems solved, please analyze the advantages and positive effects of the technical solutions to be protected by this utility model from the following aspects:
[0018] First, the utility model proposes a new space transfer device, which combines an intelligent air circulation adjustment system and high-efficiency mold filtration technology, as well as a local airflow control unit.
[0019] Improved mold control accuracy: Through the intelligent air circulation control system and local airflow control unit, the airflow and mold concentration in the laboratory can be accurately controlled, which significantly improves the accuracy of mold control and reduces errors caused by mold spread during the experiment.
[0020] Reduced equipment maintenance costs: High-efficiency mold filtration technology and automatic cleaning mechanism reduce the need for frequent filter replacement, reducing maintenance costs and the complexity of equipment operation.
[0021] Improved laboratory environment stability: The local airflow control unit can accurately control the airflow in each experimental area, avoiding airflow interference and cross contamination, improving the stability of the experimental environment, and providing more reliable conditions for experiments.
[0022] Improved reliability of experimental results: By precisely controlling airflow and mold concentration, the variables in the experiment are reduced, the reliability and accuracy of the experimental results are improved, and more reliable data support is provided for research and industrial applications.
[0023] Enhanced system intelligence: The application of the intelligent air circulation control system enables the equipment to monitor and adjust the experimental environment in real time, improving the intelligence level of the system and being able to better cope with complex experimental needs.
[0024] Through the implementation of the above technical solutions, the problems existing in traditional mold testing equipment can be effectively solved, more efficient and accurate mold control and management can be achieved, and the progress and application of related technologies can be promoted.
[0025] Second, as auxiliary evidence of the inventiveness of the claims of this utility model, it is also reflected in the following important aspects:
[0026] (1) The expected benefits and commercial value of the technical solution of this utility model after transformation
[0027] The technical solution of this utility model offers multiple anticipated benefits and commercial value. First, it can significantly improve the efficiency of air purification systems. Through the collaborative operation of multi-layer filtration devices and intelligent airflow control units, it significantly enhances the accuracy and effectiveness of air quality management. This will help meet the urgent need for high-quality air in industrial, commercial, and domestic environments, and has broad market application prospects.
[0028] Secondly, as people's concern for health and environmental quality continues to grow, the demand for efficient air purification equipment is also increasing. The technical solution of this utility model can provide an efficient and intelligent air purification solution to meet consumers' demand for high-quality air, and has great market potential. It is expected that the promotion and sales of related products of this technical solution will generate considerable economic benefits.
[0029] Furthermore, this technical solution offers high technical barriers and competitive advantages, effectively protecting market share and enhancing brand value. Through patent protection and technology transfer, companies can secure a leading position in the market and achieve sustained commercial value growth.
[0030] (2) The technical solution of this utility model fills the technical gap in the industry at home and abroad
[0031] The technical solution of this utility model fills several gaps in the industry, both domestically and internationally. First, it integrates multiple innovative technologies, including a multi-layer filtration device, an intelligent airflow control unit, and an air flow regulator, to form a complete, intelligent, and highly efficient air purification system. This integrated solution is unprecedented in the prior art and possesses significant innovation and advancement.
[0032] Secondly, the present invention's technical solution, through intelligent control and a multi-sensor module, enables real-time monitoring and adjustment of air quality, a breakthrough compared to existing air purification devices both domestically and internationally. While most conventional air purification devices are limited to single-stage air filtration, the present invention intelligently adjusts air flow and filtration efficiency based on real-time monitoring data, achieving optimal air purification results.
[0033] Furthermore, this technical solution utilizes advanced airflow distribution and regulation technologies, effectively improving the efficiency and uniformity of air purification, avoiding the dead spots and uneven purification effects common in traditional equipment. These technological innovations not only enhance the performance of the equipment but also expand its application scope, enabling it to function in more complex and diverse environments.
[0034] The technical solution of the utility model fills multiple technical gaps in the field of air purification technology, has significant innovation and practicality, and is of great significance to promoting technological progress in this field. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 This is a structural diagram of a space transfer device for effectively reducing the spread of fungal test strains provided by an embodiment of the present utility model.
[0036] Figure 2 It is a structural diagram of an air circulation regulator provided by an embodiment of the present utility model.
[0037] Figure 3 This is a structural diagram of the air flow distributor provided in an embodiment of the present utility model.
[0038] In the figure: 1. Housing; 2. Air circulation regulator; 3. Air flow distributor; 4. Multi-layer filter device; 5. Air flow control unit; 6. Display; 7. Sensor module; 8. Control unit; 9. Adjustable air flow port; 10. Fan; 11. Air flow guide device. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0040] like Figure 1 、 2 As shown in FIG. 3 , the embodiment of the present invention provides a spatial transmission device that effectively reduces the spread of mold test strains, including:
[0041] Casing 1, air circulation regulator 2, air flow distributor 3, multi-layer filter device 4, air flow control unit 5, display 6, sensor module 7, control unit 8, adjustable air flow port 9, fan 10, air flow guide device 11.
[0042] An air circulation regulator 2 is fixed to the left end of the casing 1 by screws; an air flow distributor 3 is fixed to the left bottom of the casing 1 by screws; a multi-layer filter device 4 is fixed to the center of the casing 1 by screws; an air flow control unit 5 is fixed to the right end of the casing 1 by screws; a display 6 is embedded in the center of the air circulation regulator 2; and a sensor module 7 is provided at the right bottom of the air circulation regulator 2.
[0043] A control unit 8 is provided at the right end of the air circulation regulator 2 provided in the embodiment of the present invention.
[0044] An adjustable air flow opening 9 is provided above the air flow distributor 3 provided in the embodiment of the present utility model.
[0045] The air flow distributor 3 provided in the embodiment of the present invention has a fan 10 embedded in the center.
[0046] An airflow guide device 11 is provided below the airflow distributor 3 provided in the embodiment of the present invention.
[0047] The specific implementation of this utility model:
[0048] ##1.1 Intelligent air circulation control system
[0049] structure:
[0050] Smart Air Flow Regulator: The device includes an advanced air flow regulator equipped with built-in sensors and intelligent control modules to monitor the air quality and mold concentration in the laboratory in real time.
[0051] Air flow distribution system: includes multiple adjustable air flow distribution ports, which allow the direction and intensity of the air flow to be adjusted according to real-time detection data to ensure uniform air flow in the laboratory.
[0052] Technological advancements:
[0053] Precisely control airflow: By real-time monitoring and adjusting airflow, the problem of uneven local mold concentration can be effectively reduced and the reliability of experimental results can be improved.
[0054] Dynamic adjustment: The intelligent system can dynamically adjust the airflow according to changes during the experiment, effectively avoiding airflow interference and cross contamination.
[0055] ##1.2 High-efficiency mold filtration technology
[0056] structure:
[0057] Multi-layer filtration device: It uses multiple layers of high-efficiency filters, including a pre-filter layer, a HEPA (High-Efficiency Particulate Air) filter layer and an activated carbon layer to capture and remove mold spores and other pollutants in the air.
[0058] Automatic cleaning mechanism: The filter unit is equipped with an automatic cleaning mechanism to regularly remove accumulated mold and dirt to maintain the efficient performance of the filter.
[0059] Technological advancements:
[0060] Efficient mold capture: Multi-layer filtration technology can significantly improve the capture efficiency of mold spores and reduce the concentration of mold in the air.
[0061] Reduced maintenance costs: The automatic cleaning mechanism reduces the need for frequent filter changes, reducing maintenance costs and operational complexity.
[0062] ##1.3 Local Airflow Control Unit
[0063] structure:
[0064] Local airflow control device: An independent airflow control unit is installed in each experimental area, equipped with a small fan and adjustable airflow channel to precisely control the airflow in each area.
[0065] Sensors and feedback systems: The local airflow control unit is equipped with sensors and feedback systems to monitor the mold concentration and airflow conditions in the area in real time and make fine adjustments.
[0066] Technological advancements:
[0067] Local control: It can precisely control the airflow in a specific area, avoiding airflow crossover and contamination problems, and improving the local environmental stability of the experiment.
[0068] Enhanced precision: Through the combination of feedback system and sensor, the control accuracy of mold spread is improved and experimental error is reduced.
[0069] Specific and significant technological advancements brought about by the structure
[0070] 1. Improved mold control accuracy: Through the intelligent air circulation control system and local airflow control unit, the airflow and mold concentration in the laboratory can be accurately controlled, which significantly improves the accuracy of mold control and reduces the errors caused by mold spread during the experiment.
[0071] 2. Reduced equipment maintenance costs: High-efficiency mold filtration technology and automatic cleaning mechanism reduce the need for frequent filter replacement, reducing maintenance costs and the complexity of equipment operation.
[0072] 3. Improved laboratory environment stability: The local airflow control unit can accurately control the airflow in each experimental area, avoiding airflow interference and cross contamination, improving the stability of the experimental environment, and providing more reliable conditions for the experiment.
[0073] 4. Improved reliability of experimental results: By precisely controlling airflow and mold concentration, the variables in the experiment are reduced, the reliability and accuracy of the experimental results are improved, and more reliable data support is provided for research and industrial applications.
[0074] 5. Enhanced system intelligence: The application of the intelligent air circulation control system enables the equipment to monitor and adjust the experimental environment in real time, improves the intelligence level of the system, and can better cope with complex experimental needs.
[0075] Through the implementation of the above technical solutions, the problems existing in traditional mold testing equipment can be effectively solved, more efficient and accurate mold control and management can be achieved, and the progress and application of related technologies can be promoted.
[0076] Refined specific structure
[0077] #1. Intelligent air circulation control system
[0078] 1.1 Intelligent air circulation regulator
[0079] Sensor Module: Equipped with high-precision air quality sensors, including a mold spore sensor, a humidity sensor, a temperature sensor, and an airflow velocity sensor. These sensors can detect mold concentration and air environment parameters in the laboratory in real time.
[0080] The control unit, comprising a microcontroller and intelligent algorithm modules, processes sensor data and adjusts airflow according to set parameters. The control unit can connect to a central control system via wireless or wired communication, enabling remote monitoring and adjustments.
[0081] Display interface: With an LCD or touch screen, it displays air quality data and system status in real time, allowing users to manually adjust settings or view real-time data.
[0082] 1.2 Airflow distribution system
[0083] Adjustable Airflow Ports: Includes multiple adjustable airflow distribution ports, using electric or pneumatic valves to adjust the direction and intensity of airflow. The ports can be opened and closed as needed to optimize air flow and reduce local mold concentration.
[0084] Fan or blower: The device is equipped with a high-efficiency fan or blower to promote air flow. The fan speed can be adjusted to meet the airflow requirements at different experimental stages.
[0085] Airflow guide device: Use guide plates or guide ducts to evenly distribute the airflow to various areas of the laboratory to avoid dead corners and uneven airflow.
[0086] Technological advancements:
[0087] Real-time airflow adjustment is achieved, which can accurately control the air quality in the laboratory and reduce the problem of uneven local mold concentration.
[0088] Dynamically adjust airflow and environmental parameters to improve the stability and reliability of the laboratory environment.
[0089] #2. High-efficiency mold filtration technology
[0090] 2.1 Multi-layer filtration device
[0091] Pre-filter: Uses a coarse mesh filter to remove large particles and preliminary contaminants. The pre-filter is removable and washable for regular maintenance.
[0092] HEPA filter layer: uses a high-efficiency particulate air filter that can capture tiny particles 0.3 microns and larger, including mold spores. The HEPA layer provides efficient mold capture.
[0093] Activated carbon layer: An activated carbon layer is added after the HEPA filter layer to remove harmful gases and odors from the air and improve the overall cleanliness of the air.
[0094] 2.2 Automatic cleaning mechanism
[0095] Self-cleaning system: Equipped with automatic cleaning devices, such as vibrating cleaners or jet cleaning devices, to regularly remove dust and mold from the filter surface. The cleaning cycle can be automatically set by the system to ensure that the filter continues to operate efficiently.
[0096] Monitoring sensors: Pressure sensors and pollution sensors installed on the filter are used to monitor the status and dust accumulation of the filter and automatically remind users to perform maintenance or replacement.
[0097] Technological advancements:
[0098] Improves the efficiency of filtering mold spores in the air and reduces the mold concentration in the air.
[0099] The automatic cleaning mechanism reduces maintenance frequency and costs, ensuring the filter works efficiently over the long term.
[0100] #3. Local airflow control unit
[0101] 3.1 Local airflow control device
[0102] Fan unit: Each experimental area is equipped with a small fan that can independently adjust the airflow speed. The fan has a variable speed function and adjusts the airflow intensity based on real-time data.
[0103] Airflow channel: The adjustable airflow channel system allows precise adjustment of the air flow direction. The airflow channel adopts a detachable design for easy cleaning and maintenance.
[0104] Partitions and baffles: Adjustable partitions or baffles are set up in the laboratory to isolate the airflow in different experimental areas and prevent cross contamination of airflow.
[0105] 3.2 Sensors and Feedback Systems
[0106] Airflow sensor: A sensor installed in the local airflow control unit to monitor the airflow speed and direction in real time.
[0107] Mold concentration sensor: monitors the mold concentration data of each experimental area.
[0108] Feedback control system: In combination with sensor data, the fan and airflow channel settings are adjusted through a feedback mechanism to maintain optimal airflow conditions in the experimental area.
[0109] Technological advancements:
[0110] It achieves precise airflow control in each experimental area and improves the stability of the local environment.
[0111] The feedback system improves the accuracy of airflow control and reduces airflow cross-contamination and contamination problems in experiments.
[0112] This refined structure not only improves the accuracy of air quality control during mold testing but also effectively reduces maintenance complexity and operating costs. Through an intelligent air circulation control system, efficient mold filtration technology, and a local airflow control unit, this device significantly enhances the accuracy and reliability of mold testing, providing a more stable and efficient operating environment for laboratories. These technological advancements significantly improve laboratory working conditions and provide advanced solutions for mold control in scientific research and industrial applications.
[0113] Example 1: High-efficiency mold control laboratory
[0114] #background
[0115] At a microbiology research institute, when conducting mold culture and detection experiments, traditional air circulation and filtration systems were unable to effectively control the spread of mold in the laboratory, resulting in unstable experimental results. Frequent cleaning and maintenance also increased operating costs.
[0116] #Implementation Plan
[0117] 1. Intelligent air circulation control system
[0118] Sensor Module: Installs mold spore sensors, humidity sensors, temperature sensors, and airflow velocity sensors. The system monitors the air quality and mold concentration in the laboratory in real time.
[0119] Control unit: A microcontroller processes sensor data and transmits it to a central control system via a wireless connection. Users can view and adjust settings in real time through a display interface.
[0120] Air flow distribution system: Multiple adjustable air flow ports and high-efficiency fans are installed in the laboratory to adjust the air flow direction and intensity based on sensor feedback.
[0121] 2. High-efficiency mold filtration technology
[0122] Multi-layer filtration device: Pre-filtration layer, HEPA filter layer and activated carbon layer are installed in the laboratory air circulation system to ensure that mold spores and other pollutants in the air are effectively removed.
[0123] Automatic cleaning mechanism: Equipped with a self-cleaning device and monitoring sensors, it cleans the filter regularly and automatically reminds the user to perform maintenance.
[0124] 3. Local airflow control unit
[0125] Fan unit: A small fan is installed in the laboratory, which can independently adjust the air flow speed to meet the needs of different experimental areas.
[0126] Airflow channel: Use the adjustable airflow channel system to ensure uniform distribution of airflow in the laboratory.
[0127] Sensor and feedback system: The airflow and mold concentration in each experimental area are monitored in real time, and the feedback control system automatically adjusts the settings of the fan and airflow channel.
[0128] The utility model improves the accuracy of air quality control: the real-time monitoring and adjustment system significantly reduces the mold concentration in the laboratory, and the experimental results are more stable.
[0129] This utility model reduces maintenance costs: the automatic cleaning mechanism and precise airflow control reduce the need and frequency of manual maintenance, reducing operating costs.
[0130] The utility model improves the experimental efficiency: through the optimized airflow and filtering system, the reliability and efficiency of the experiment are improved.
[0131] Example 2: Food Safety Testing Laboratory
[0132] In a food safety testing laboratory, when conducting food mold testing, the traditional air circulation and filtration system was unable to effectively prevent the spread of mold in the laboratory, affecting the accuracy of the test results.
[0133] 1. Intelligent air circulation control system
[0134] Sensor module: equipped with mold spore sensor, humidity sensor, temperature sensor and air flow velocity sensor for real-time monitoring of air quality.
[0135] Control unit: The microcontroller adjusts the airflow through intelligent algorithms, and the display interface shows real-time data and system status. The user can make manual or automatic adjustments.
[0136] Air distribution system: Install adjustable air vents and fans to ensure even air flow and avoid excessive local mold concentration.
[0137] 2. High-efficiency mold filtration technology
[0138] Multi-layer filtration device: Pre-filter layer, HEPA filter layer and activated carbon layer are installed in the air treatment system to ensure that mold spores and harmful gases are effectively filtered.
[0139] Automatic cleaning mechanism: Automatic cleaning device and monitoring sensor ensure the filter continues to operate efficiently, reducing maintenance workload.
[0140] 3. Local airflow control unit
[0141] Fan unit: fans are installed in different detection areas to independently adjust the airflow speed and ensure the stability of local airflow.
[0142] Airflow channel: Set up adjustable airflow channel to optimize air flow direction and speed to prevent cross contamination.
[0143] Sensor and feedback system: monitors local airflow and mold concentration in real time, automatically adjusting fan and airflow channel settings to ensure the optimal environment in the detection area.
[0144] #Implementation Effect
[0145] Improved testing accuracy: By effectively controlling mold concentration in the laboratory, the accuracy of food testing has been significantly improved.
[0146] Reduced operational risks: Reduced the risk of mold spread in the laboratory and improved the reliability of food safety testing.
[0147] Enhanced operational convenience: Automatic cleaning and feedback systems reduce manual intervention, improving laboratory operational convenience and efficiency.
[0148] In order to implement and name the following devices, each device can be selected from standard products available on the market or customized. The following are possible device names or model suggestions for each device:
[0149] 1. Enclosure:
[0150] -Name of the device: Aluminum alloy casing
[0151] -Model: Customized, choose the right manufacturer based on equipment size and needs
[0152] 2. Airflow Regulator:
[0153] -Name of the device: Electric air control valve
[0154] -Model: Belimo AF24-SR
[0155] 3. Airflow Distributor:
[0156] -Name of the device: air distribution plate
[0157] -Model: Customized, selected according to equipment design requirements
[0158] 4. Multilayer Filter Unit:
[0159] -Name of the device: HEPA filter combination
[0160] -Model: Honeywell HEPA Filter H13+activated carbon filter
[0161] 5. Airflow Control Unit:
[0162] -Name of the device: Intelligent airflow controller
[0163] -Model: Siemens RDD100
[0164] 6. Display:
[0165] -Name of the device: LCD display
[0166] -Model: Samsung LCD Module 7 inches
[0167] 7.Sensor Module:
[0168] -Name of the device: Multifunctional environmental sensor
[0169] -Model: Bosch BME680
[0170] 8. Control Unit:
[0171] -Implementation device name: Embedded Controller
[0172] -Model: Raspberry Pi 4 Model B
[0173] 9. Adjustable Airflow Outlet:
[0174] -Name of the device: Adjustable louver air vent
[0175] -Model: Customized, selected according to equipment design requirements
[0176] 10. Fan:
[0177] -Name of the device: Centrifugal fan
[0178] -Model: ebm-papst R2E190-A026-05
[0179] 11. Airflow Guide Device:
[0180] -Name of the device: air flow guide plate
[0181] -Model: Customized, selected according to equipment design requirements
[0182] These implementations and models are only suggestions and the specific choice should be determined based on actual needs, budget and supplier availability.
[0183] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.
Claims
1. A spatial transmission device that effectively reduces the spread of fungal test strains, characterized in that: include: Housing, air flow regulator, air flow distributor, multi-layer filter device, air flow control unit, display, sensor module, control unit, adjustable air flow port, fan, air flow guide device; An air circulation regulator is fixed to the left end of the casing by screws; an air flow distributor is fixed to the left bottom of the casing by screws; a multi-layer filtering device is fixed to the center of the casing by screws; an air flow control unit is fixed to the right end of the casing by screws; a display is embedded in the center of the air circulation regulator; and a sensor module is provided at the right bottom of the air circulation regulator.
2. The spatial transmission device for effectively reducing the spread of mold test strains as claimed in claim 1, characterized in that: A control unit is provided at the right end of the air circulation regulator.
3. The spatial transmission device for effectively reducing the spread of mold test strains as claimed in claim 1, characterized in that: An adjustable air flow port is provided above the air flow distributor.
4. The spatial transmission device for effectively reducing the spread of mold test strains as claimed in claim 1, characterized in that: A fan is embedded in the center of the air flow distributor.
5. The spatial transmission device for effectively reducing the spread of mold test strains as claimed in claim 1, characterized in that: An airflow guide device is provided below the airflow distributor.