An intelligent fume hood

Abstract

The present invention provides an intelligent fume hood, which includes setting initial environmental parameters, dividing the intelligent fume hood into several wind speed layers, and each wind speed layer is corresponding to an air supply outlet; the air supply direction of the air supply outlet is perpendicular to the moving direction of the window; dynamically adjusting the air speed of the air supply outlet and accompanying differential pressure control to promote the air to flow from the low wind speed layer to the high wind speed layer, which helps to effectively control the air flow direction in the operation area and ensure that harmful gases will not spread to the operation area; and disinfecting the operation area by releasing disinfection spray, and the spray is ejected from the edge of the window to ensure that the entire operation area is effectively disinfected. It provides an intelligent, highly safe working environment with controllable air quality, and is particularly suitable for occasions such as laboratories that require strict control of air quality and harmful substances.

Description

Technical Field

[0001] The present invention belongs to the technical field of laboratory ventilation, and particularly relates to an intelligent fume hood. Background Art

[0002] The fume hood can not only provide a good experimental environment for the laboratory, but also better ensure the personal safety of experimental personnel. During the experiment, the fume hood plays the role of exhaust and ventilation, discharging harmful gases and preventing the staff in the laboratory from being invaded by some polluting substances such as toxic, disease-causing or chemically substances or organisms with unknown toxicity, particles, fumes, vapors, soot, dust and aerosols. Therefore, the fume hood is an essential part of the laboratory.

[0003] An excessively high face velocity will lead to turbulence, thereby reducing its control ability for toxic and harmful substances. At the same time, an excessively low face velocity will also affect the performance of the fume hood. Especially at a relatively high inlet velocity, while wasting energy consumption, it will not improve, and may even deteriorate the airflow inhibition effect of the fume hood, resulting in the possibility of pollutant residue or even leakage. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an intelligent fume hood to solve the problems that the prior art cannot automatically and flexibly control the wind speed of the fume hood and reduce the residue of pollutants.

[0005] In a first aspect, the present invention provides an intelligent fume hood, including:

[0006] Set initial environmental parameters, divide the intelligent fume hood into several wind speed layers, and each wind speed layer corresponds to an air supply opening;

[0007] The air supply direction of the air supply opening is perpendicular to the moving direction of the window;

[0008] During use, air supply is triggered as the window is opened, and the wind speed of each wind speed layer increases sequentially as the opening range of the window increases;

[0009] A wind pressure difference is formed between adjacent wind speed layers, so that the air in the intelligent fume hood flows from the low wind speed layer to the high wind speed layer;

[0010] The air in the operation area of the intelligent fume hood is detected in real time to obtain the air quality, and the air supply openings are controlled step by step according to the air quality;

[0011] Analyze the air quality to obtain air parameters and gas types;

[0012] By judging the gas type, when it contains toxic gases, increase the air supply wind speed of the air supply opening and increase it step by step until the air supply wind speed of the last air supply opening reaches the highest wind speed of the fume hood surface standard;

[0013] When closed, the air supply outlets of the viewing window are closed one by one in the reverse order of opening, and the exhaust fan is turned on;

[0014] Release the disinfection spray, which sprays out from the edge of the viewing window and continues until the viewing window moves to a fully closed state;

[0015] Diffuse the disinfection spray into each air velocity layer, converge the air in the air velocity layer and let it flow downward along the exhaust direction into the air outlet;

[0016] Turn on the lighting device to irradiate the operation area until the environment in the operation area reaches the initial environmental data, and the intelligent fume hood stops working.

[0017] In one embodiment, the air in the operation area of the intelligent fume hood is detected in real time to obtain the air quality, and the air supply outlets are controlled step by step according to the air quality, including:

[0018] When the air quality is higher than the preset standard, gradually reduce the air supply speed of each air supply outlet until the air supply speed of the first air supply outlet reaches the lowest air supply speed of the fume hood surface standard;

[0019] When the air quality is lower than the preset standard, gradually increase the air supply speed of each air supply outlet until the air supply speed of the last air supply outlet reaches the highest air supply speed of the fume hood surface standard;

[0020] When the air quality is equal to the preset standard, keep the current air supply speed of each air supply outlet.

[0021] In one embodiment, the air in the operation area of the intelligent fume hood is detected in real time to obtain the air quality, and the air supply outlets are controlled step by step according to the air quality, further including:

[0022] Generate a control record according to the changes of the step-by-step control of the air supply outlets for the management personnel to view the usage situation and maintain the frequently controlled intelligent fume hood;

[0023] Then, according to the control record, it is determined in real time whether the current operation of the intelligent fume hood is a high-risk operation. When it is determined to be a high-risk operation, a reminder is triggered to notify the management personnel that the current operation is a high-risk operation and they should pay more attention to take corresponding measures to deal with emergencies.

[0024] In one embodiment, the toxic gases include:

[0025] Corrosive gases, asphyxiating gases, neurotoxic gases, inhalation toxic gases, flammable toxic gases, non-obviously toxic gases, and other toxic gases;

[0026] Judge according to the air concentration of each gas in the operation area.

[0027] In one embodiment, the disinfection spray includes:

[0028] One or more of hydrogen peroxide, peracetic acid, sodium hypochlorite, chlorine dioxide, glutaraldehyde, and ethanol are mixed in proportion.

[0029] In one embodiment, the initial environmental parameters include:

[0030] Temperature and humidity parameters and air pressure parameters;

[0031] The temperature and humidity parameters are set according to laboratory standards, and the air pressure parameter is lower than the current indoor air pressure.

[0032] In one embodiment, the lighting device includes:

[0033] Ultraviolet lamps and incandescent lamps are used alternately;

[0034] Or, infrared lamps and incandescent lamps are used alternately;

[0035] Or, ultraviolet lamps, infrared lamps, and incandescent lamps are used alternately.

[0036] In one embodiment, it further includes:

[0037] The operating area tabletop of the intelligent fume hood is heated to dry the operating area tabletop and the experimental utensils placed on the tabletop.

[0038] In a second aspect, the present invention provides an intelligent fume hood system, including:

[0039] A cabinet body, a movable window, air supply openings equidistantly arranged on the inner wall of the cabinet body along the moving direction of the window, a wind speed sensor, a temperature and humidity sensor, an air outlet, and an exhaust fan;

[0040] And, a disinfection spray device is arranged on the moving side wall of the window; lighting devices are arranged at two top corners inside the cabinet body;

[0041] When in use, when the window is opened, the air supply openings supply air into the cabinet body, and the wind speed of each air supply opening gradually increases to form a wind speed layer, and a wind pressure difference is formed between adjacent wind speed layers, so that the air in the cabinet body flows from the low wind speed layer to the high wind speed layer; wherein the wind speed of the air supply openings is obtained by collecting through the wind speed sensor;

[0042] When closed, the window is closed, and the air supply openings are closed one by one in the reverse order of opening, and the exhaust fan is turned on to extract the air in the cabinet body from the air outlet; and the disinfection spray device sprays disinfection spray into the cabinet body along with the movement of the window.

[0043] In a third aspect, the present invention further provides a laboratory, including: the above-mentioned intelligent fume hood.

[0044] The intelligent fume hood provided by the above embodiments of the present invention has the following beneficial effects:

[0045] It includes functions such as dynamic air velocity regulation, differential pressure control, real-time air quality monitoring, toxic gas detection and treatment, disinfection function, and environment restoration. Through dynamic air velocity regulation, the device can flexibly adjust the air velocity of the air supply openings according to operation requirements. As the window is opened, the air supply openings at different air velocity layers are gradually opened, and the air velocity gradually increases to maintain the air circulation and cleanliness in the operation area. Through differential pressure control, a wind pressure difference is formed between different air velocity layers, prompting air to flow from the low air velocity layer to the high air velocity layer, which helps to effectively control the air flow direction in the operation area and ensure that harmful gases do not spread to the operation area. The device monitors the air quality in the operation area in real time and controls the air supply openings step by step according to the detection results to ensure that the air quality in the operation area is effectively maintained and regulated. When toxic gases are detected, the device will increase the air velocity of the air supply openings to quickly remove harmful substances and ensure the safety of laboratory workers. When the device is closed, a disinfection spray is released to disinfect the operation area, and the spray is ejected from the edge of the window to ensure effective disinfection of the entire operation area. Finally, by turning on the lighting device to irradiate the operation area, the environment in the operation area is adjusted to the initial environmental data, which helps to restore the environment in the operation area to the initial state after the experiment or operation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0047] Figure 1 It is a flowchart of an intelligent fume hood provided by an embodiment of the present invention;

[0048] Figure 2 It is a flowchart of the step-by-step control of the air supply openings by the present invention according to the air quality;

[0049] Figure 3 For Figure 2 the logic diagram of the step-by-step control in

[0050] Figure 4 It is a schematic structural diagram of an intelligent fume hood system provided by an embodiment of the present invention;

[0051] Figure 5 It is a schematic structural diagram of another intelligent fume hood system provided by the present invention.

[0052] Description of the Drawings: 1. Cabinet body; 2. Movable window; 3. Air supply opening; 4. Air outlet; 5. Disinfection spray device; 6. Lighting device; 7. Wind speed layer. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0055] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0056] Please refer to Figure 1 , one embodiment of the present invention provides an intelligent fume hood, including:

[0057] S100: Set the initial environmental parameters, divide the intelligent fume hood into several wind speed layers, and each wind speed layer corresponds to an air supply opening;

[0058] S200: The air supply direction of the air supply opening is perpendicular to the moving direction of the window;

[0059] S300: During use, air supply is triggered with the opening of the window, and the wind speeds of each wind speed layer increase in sequence as the opening range of the window increases;

[0060] S310: A wind pressure difference is formed between adjacent wind speed layers, causing the air in the intelligent fume hood to flow from the low wind speed layer to the high wind speed layer;

[0061] S320: The air in the operation area of the intelligent fume hood is detected in real time to obtain the air quality, and the air supply outlets are controlled step by step according to the air quality;

[0062] S330: Analyze the air quality to obtain air parameters and gas types;

[0063] S340: By judging the gas type, when toxic gas is included, increase the air supply speed of the air supply outlet and increase it step by step until the air supply speed of the last air supply outlet reaches the highest wind speed standard on the fume hood surface;

[0064] S400: When closing, as the window closes, the air supply outlets are closed one by one in the reverse order of opening, and the exhaust fan is turned on;

[0065] S410: Release disinfection spray, which sprays out from the edge of the window and continues until the window moves to be completely closed;

[0066] S420: Make the disinfection spray spread into each wind speed layer, converge the air in the wind speed layer and flow downward along the exhaust direction into the air outlet;

[0067] S430: Turn on the lighting device to irradiate the operation area until the environment in the operation area reaches the initial environmental data, and the intelligent fume hood stops working.

[0068] Specifically, in the initial stage, environmental parameters are set, the inside of the fume hood is divided into several wind speed layers, and corresponding air supply outlets are configured for each wind speed layer. The air supply direction of the air supply outlet is perpendicular to the moving direction of the window to ensure that the air supply effect can cover the entire operation area.

[0069] When in use, as the window of the fume hood is opened, the air supply outlets of the wind speed layers will be triggered one by one to supply air, and as the opening range of the window increases, the wind speeds of each wind speed layer will increase in turn. This dynamic wind speed adjustment ensures that the air flow inside the fume hood can meet the operation requirements in different opening states.

[0070] In order to form effective air flow control, a wind pressure difference is formed between adjacent wind speed layers, so that the air in the fume hood flows from the low wind speed layer to the high wind speed layer, ensuring that harmful gases will not stay in the operation area.

[0071] In addition, it also has the function of detecting the air in the operation area in real time, and controlling the air supply outlets step by step according to the real-time detected air quality. When toxic gas is detected, the intelligent fume hood will correspondingly increase the wind speed of the air supply outlet and increase it step by step until the air supply speed of the last air supply outlet reaches the highest wind speed standard on the fume hood surface to ensure the timely and effective removal of harmful substances.

[0072] When the fume hood is closed, the intelligent fume hood will close the air supply outlets one by one in the reverse order of opening and start the exhaust fan. In addition, the intelligent fume hood also releases a disinfection spray, which is ejected from the edge of the viewing window and continues until the viewing window is completely closed. The disinfection spray will spread into each air velocity layer, converge the air in the air velocity layer and flow downward along the exhaust direction into the air outlet, ensuring that the entire operation area is comprehensively disinfected.

[0073] Finally, in order to restore the operation area environment to the initial environment data, the intelligent fume hood turns on the lighting device to irradiate the operation area until the environment in the operation area reaches the initial environment data, and then the intelligent fume hood stops working.

[0074] Please refer to Figure 2-3 , in one of the embodiments, the intelligent fume hood detects the air quality in the operation area in real time, and controls the air supply outlets step by step according to the air quality, including:

[0075] S321: When the air quality is higher than the preset standard, gradually reduce the air supply wind speed of each air supply outlet until the air supply wind speed of the first air supply outlet reaches the lowest wind speed of the fume hood surface standard;

[0076] S322: When the air quality is lower than the preset standard, gradually increase the air supply wind speed of each air supply outlet until the air supply wind speed of the last air supply outlet reaches the highest wind speed of the fume hood surface standard;

[0077] S323: When the air quality is equal to the preset standard, keep the current air supply wind speed of each air supply outlet.

[0078] It should be noted that the air quality can be rated as excellent, good, average and poor according to the actual situation.

[0079] Actually, based on the real-time detection of the air quality in the operation area, the function of maintaining the air quality within the preset standard range is achieved by controlling the air supply outlets step by step. First, the intelligent fume hood monitors the air quality in the operation area in real time by carrying air quality detection sensors, which can measure various air parameters such as harmful gas concentration, humidity, temperature, etc., so as to obtain an accurate assessment of the air quality in the operation area, evaluate the air quality, and judge it as one of the grades of excellent, good, average and poor.

[0080] According to the obtained air quality data, the intelligent fume hood will judge whether the current air quality is higher than, lower than, or equal to the preset standard. Based on this judgment, the intelligent fume hood will adopt different control strategies to adjust the air supply wind speed of the air supply outlets to achieve the goal of maintaining the air quality in the operation area. Taking the air quality level evaluation in the example as an example, excellent and good are the preset standards, excellent is higher than the preset ratio standard, while average and poor are lower than the preset standard.

[0081] Exemplarily, in a chemical laboratory, a certain experiment produced volatile gases, and the volatile gases were non-toxic, resulting in a slight improvement in air quality, making the air quality rated as excellent. According to this situation, the air velocity of the air supply outlet is gradually reduced to ensure that the fume hood does not excessively exhaust fresh air at too high an air velocity, but maintains at the minimum air velocity standard of the fume hood surface.

[0082] For example, in a biological laboratory, a certain experiment released some harmful gases, resulting in a decline in air quality, making the controlled quality rated as average or even poor. According to the detection results, the air velocity of the air supply outlet is gradually increased to ensure that the toxic gases can be quickly exhausted until the maximum air velocity standard of the fume hood surface;

[0083] Suppose again that in a laboratory, a certain experiment produced slight volatile chemicals, but the air quality was still within an acceptable range and the air quality remained good. Maintain the current air velocity of the air supply outlet to maintain the ventilation effect in the operation area without causing unnecessary air velocity changes.

[0084] In one embodiment, the air in the operation area of the real-time detection intelligent fume hood is obtained to get the air quality, and the air supply outlet is gradually controlled according to the air quality, and further includes:

[0085] S324: Generate a control record according to the changes of the gradual control of the air supply outlet for the management personnel to view the usage situation and maintain the intelligent fume hood with frequent control;

[0086] S325: Then, according to the control record, it is determined in real time whether the current operation of the intelligent fume hood is a high-risk operation. When it is determined to be a high-risk operation, a reminder is triggered to notify the management personnel to pay more attention to the current high-risk operation to take corresponding measures to deal with emergencies.

[0087] By generating a detailed control record of the working conditions of the air supply outlet, the situation of each step-by-step adjustment of the air supply outlet is recorded, including important information such as the air velocity adjustment range and the adjustment time point. These records provide a comprehensive understanding of the gas emission situation in the laboratory.

[0088] These generated control records are not only for internal records, but also provide a visualization tool for management personnel. Management personnel can view these records to deeply understand the gas emission situation in the laboratory at different time points and the corresponding control of the intelligent fume hood. This visualized information enables management personnel to timely evaluate the safety and ventilation effect of laboratory operations, providing strong support for laboratory management.

[0089] Meanwhile, it also has the function of judging high-risk operations and triggering reminders. Through real-time analysis of control records, it can determine whether the current intelligent fume hood operation has entered a high-risk operation state. For example, if the system detects continuous and frequent adjustments of the air supply outlet, it may imply a large amount of toxic gas release in the laboratory. Once determined as a high-risk operation, the system will immediately trigger a reminder and notify the management personnel that the current operation is a high-risk operation through means such as audible and visual alarms and mobile phone text message notifications, requiring increased attention and suggesting corresponding emergency measures. This real-time feedback and reminder mechanism helps to promptly respond to potential dangerous situations and ensure the safety of laboratory operations.

[0090] In one embodiment, the toxic gases include:

[0091] corrosive gases, asphyxiating gases, neurotoxic gases, inhalation toxic gases, flammable toxic gases, non-obvious toxic gases, and other toxic gases;

[0092] Judgment is made according to the air concentration of each gas in the operation area.

[0093] By judging the types of various toxic gases, the intelligent adjustment of the air supply outlet wind speed is carried out to adapt to the release of different toxic gases in the fume hood. For example, when corrosive gases (such as chlorine gas) are detected, the system quickly increases the air supply outlet wind speed to prevent the corrosion of airway and eye tissues; for asphyxiating gases (such as carbon monoxide), the system will quickly adjust the wind speed to ensure the timely replacement of harmful gases in the air and prevent asphyxiation hazards. Similarly, for neurotoxic gases, inhalation toxic gases, flammable toxic gases, and other toxic gases, the system can intelligently adjust the air supply outlet wind speed to maintain the safety of the laboratory operation environment and ensure the health of the operators. Such a system response mechanism can not only adjust the wind speed according to specific toxicity characteristics but also adjust according to the concentration changes of different toxic gases, minimizing the laboratory operation risks to the greatest extent and providing an efficient and safe operation environment.

[0094] In one embodiment, the disinfection spray includes:

[0095] One or more of hydrogen peroxide, peracetic acid, sodium hypochlorite, chlorine dioxide, glutaraldehyde, and ethanol are mixed in proportion. Among them, the composition of the disinfection spray can include hydrogen peroxide (5%-10%), peracetic acid (0.2%-0.5%), sodium hypochlorite (0.1%-1.0%), chlorine dioxide (5 ppm-20 ppm), glutaraldehyde (1.0%-3.4%), and ethanol (60%-80%).

[0096] During the process of closing the intelligent fume hood, first, close the air supply outlets one by one in the reverse order of opening, gradually reducing the air velocity of the air supply outlets to prevent the retention of harmful gases. At the same time, turn on the exhaust fan to ensure that the air in the operation area can be effectively exhausted, preventing residual gases. Then, release the disinfection spray, which includes one or more of hydrogen peroxide, peracetic acid, sodium hypochlorite, chlorine dioxide, glutaraldehyde, and ethanol mixed in proportion, and spray from the edge of the viewing window. The disinfection spray is continuously sprayed until the viewing window is completely closed, ensuring that the entire operation area is evenly covered by disinfection. At this time, the disinfection spray diffuses to each air velocity layer to ensure that even during the process of closing the air supply outlets one by one, the disinfectant can cover all the levels of air flow. Finally, the system guides the air to converge and descend through the exhaust direction to ensure that the disinfection spray covers the entire interior of the fume hood. Based on this, the intelligent fume hood achieves comprehensive disinfection of the operation area when closed, ensuring the hygiene and safety of the laboratory environment, effectively preventing the residue of microorganisms and harmful substances, and providing a clean working environment for the next experiment.

[0097] In one embodiment, the initial environmental parameters include:

[0098] Temperature and humidity parameters, and air pressure parameters;

[0099] The temperature and humidity parameters are set according to laboratory standards, and the air pressure parameter is lower than the current indoor air pressure. These parameters are intended to specify the specific environmental conditions required during the experiment. Specifically, the temperature and humidity parameters are set according to the relevant experiment standards to ensure that the temperature and humidity in the laboratory are maintained within a safe and appropriate range, which is conducive to the progress of the experiment.

[0100] For example, according to the requirements and standards of a specific experiment, the initial temperature parameter can be set between 25 degrees Celsius and 30 degrees Celsius to ensure that the temperature in the laboratory is moderate, neither too hot nor too cold. The humidity parameter may be set between 40% and 60% relative humidity to maintain an appropriate humidity level and prevent the samples in the experiment from being affected by humidity fluctuations.

[0101] At the same time, the air pressure parameter is also part of the initial environmental parameters, and its setting is usually lower than the current indoor air pressure. This helps to prevent the leakage of gases in the laboratory and ensures that the direction of gas flow is from the laboratory to the external environment, thus guaranteeing the safety of laboratory operations.

[0102] Generally speaking, the initial environmental parameters provide a stable and safe working environment for the experiment by setting conditions such as temperature, humidity, and air pressure, which helps to ensure the accuracy and reliability of the experimental results.

[0103] In one embodiment, the lighting device includes:

[0104] Ultraviolet lamps and incandescent lamps are used alternately;

[0105] Alternatively, infrared lamps and incandescent lamps are used alternately;

[0106] Alternatively, ultraviolet lamps, infrared lamps and incandescent lamps are used alternately. The lighting device includes the alternate use of ultraviolet lamps and incandescent lamps, or the alternate use of infrared lamps and incandescent lamps, or the alternate use of ultraviolet lamps, infrared lamps and incandescent lamps. Such a design takes into account that different experiments may have different requirements for lighting conditions, and the most suitable lighting combination can be selected according to the nature and requirements of the experiment. This can include adjusting environmental parameters such as temperature and humidity to ensure that the environment in the operating area returns to the initially set state after the experiment.

[0107] For example, assume that a biological experiment requiring specific temperature and humidity conditions is carried out in a fume hood. After the experiment, the lighting device is activated, and a combination of infrared lamps and incandescent lamps is selected. The heat and light generated by these lamps can help adjust the temperature and humidity in the operating area, gradually returning it to the initially set experimental environmental conditions. This customized lighting device ensures precise control of environmental parameters and provides good starting conditions for the next experiment.

[0108] Generally speaking, the use of the lighting device is a key operation in the intelligent fume hood. By selecting different types of lamps, it provides a controllable environment for the fume hood to meet the needs of different experiments.

[0109] In one embodiment, it further includes:

[0110] Heating the operating area tabletop of the intelligent fume hood to dry the operating area tabletop and the experimental utensils placed on it.

[0111] By heating the operating area tabletop, an additional heat source is provided, which helps to quickly evaporate the moisture of wet or liquid substances. This is very helpful for the evaporation of the remaining moisture or chemical reagents on the experimental utensils, and can also increase the overall temperature of the operating area, creating a more suitable working environment.

[0112] For example, a series of liquid chromatography experiments are carried out in the laboratory, and liquid solvents are used in the experimental utensils. After the experiment, in order to avoid the influence of the residual liquid on the surface of the experimental utensils on the next experiment, the operator hopes to quickly evaporate the moisture on the surface. At this time, the heating function of the operating area tabletop in the intelligent fume hood system is activated, and through the heating effect, the moisture on the surface of the experimental utensils is quickly evaporated, accelerating the drying process and ensuring that the surface of the utensils is dry and clean.

[0113] Generally speaking, the heating function of the operating area tabletop provides a more efficient way to maintain the operating environment in the laboratory. Especially in the scenario where it is necessary to quickly clean the surface of the experimental utensils after the experiment, it can improve the operating efficiency and the sustainable use of experimental equipment.

[0114] Please refer to Figure 4 or Figure 5 , Figure 4 a fume hood with a push - out type window; Figure 5 a fume hood with a pull - up type window. Another embodiment of the present invention provides an intelligent fume hood system, including:

[0115] a cabinet body, a movable window, air outlets arranged at equal intervals on the inner wall of the cabinet body along the moving direction of the window, a wind speed sensor, a temperature and humidity sensor, air outlets, and an exhaust fan;

[0116] and, a disinfection spray device is arranged on the moving side wall of the window; lighting devices are arranged at two top corners inside the cabinet body;

[0117] When in use, the window opens the air supply openings to supply air into the cabinet body. The wind speeds of the air supply openings gradually increase to form a wind speed layer, and a wind pressure difference is formed between adjacent wind speed layers, so that the air in the cabinet body flows from the low - wind - speed layer to the high - wind - speed layer; wherein the wind speed of the air supply openings is obtained by collecting through the wind speed sensor;

[0118] When closed, the window closes, and the air supply openings are closed one by one in the reverse order of opening, and the exhaust fan is turned on to extract the air in the cabinet body from the air outlets; and the disinfection spray device sprays disinfection spray into the cabinet body along with the movement of the window.

[0119] This intelligent fume hood system has multiple functions, providing comprehensive environmental management and safety guarantee for laboratory operations. First of all, the disinfection spray device of the system is located on the side wall of the movable window, and releases antibacterial agents when closed, spraying the operation area comprehensively to ensure the hygiene of the experimental table and the surface of equipment, and prevent cross - contamination. For example, after processing biological samples, comprehensive disinfection is carried out through the disinfection spray device to improve the hygiene standards of the laboratory.

[0120] Secondly, the lighting devices set in the system provide additional lighting during the experiment, which is suitable for experiments that require specific lighting conditions. For example, some experiments require clear lighting, and the lighting devices can provide suitable lighting for the operation area to ensure that the experimenter can clearly observe the experimental operation, thereby improving the accuracy and effect of the experiment.

[0121] At the same time, the system forms a wind speed layer and uses the design of wind pressure difference to ensure the formation of an air flow environment, effectively avoiding the retention of harmful gases. When there is gas emission, the wind speeds of the air supply openings increase gradually, and the formation of the wind speed layer and the wind pressure difference quickly expel the harmful gases, ensuring the safety of laboratory operators. For example, the system can intelligently adjust the working state of the air supply openings according to the real - time monitoring data of the wind speed sensor to cope with a large amount of gas generated during the experiment.

[0122] When closed, the exhaust fan starts, extracting the air inside the cabinet from the air outlet to remove the residual gas and ensure the hygiene of the laboratory environment. For example, after conducting an experiment with high-concentration toxic gases, the operation of the exhaust fan can quickly remove the toxic gases and ensure that the air quality in the laboratory meets the standards.

[0123] Through this series of designs and functions, the intelligent fume hood system provides an efficient, safe and hygienic operating environment for the fume hood.

[0124] Another embodiment of the present invention also provides a laboratory, comprising: the above-mentioned intelligent fume hood.

[0125] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An intelligent fume hood, characterized in that, Including: Set initial environmental parameters, divide the intelligent fume hood into several wind speed layers, and each wind speed layer corresponds to an air supply outlet; The air supply direction of the air supply outlet is perpendicular to the moving direction of the window; During use, air supply is triggered with the opening of the window, and the wind speeds of each wind speed layer increase sequentially as the opening range of the window increases; A wind pressure difference is formed between adjacent wind speed layers, causing the air in the intelligent fume hood to flow from the low wind speed layer to the high wind speed layer; Real-time detect the air in the operation area of the intelligent fume hood to obtain the air quality, and control the air supply outlets step by step according to the air quality; Analyze the air quality to obtain air parameters and gas types; Through the judgment of gas types, when toxic gases are included, increase the air supply wind speed of the air supply outlets step by step until the air supply wind speed of the last air supply outlet reaches the highest wind speed standard of the fume hood surface; When closing, the air supply outlets are closed one by one in the reverse order of opening with the closing of the window, and the exhaust fan is turned on; Release disinfection spray, and the disinfection spray is ejected from the edge of the window and continues until the window moves to a fully closed state; Make the disinfection spray spread to each wind speed layer, converge the air in the wind speed layer and flow downward along the exhaust direction into the air outlet; Turn on the lighting device to irradiate the operation area until the environment in the operation area reaches the initial environmental data, and the intelligent fume hood stops working.

2. The intelligent fume hood according to claim 1, characterized in that, The real-time detection of the air in the operation area of the intelligent fume hood to obtain the air quality, and the step-by-step control of the air supply outlets according to the air quality includes: When the air quality is higher than the preset standard, gradually reduce the air supply wind speed of each air supply outlet until the air supply wind speed of the first air supply outlet reaches the lowest wind speed standard of the fume hood surface; When the air quality is lower than the preset standard, gradually increase the air supply wind speed of each air supply outlet until the air supply wind speed of the last air supply outlet reaches the highest wind speed standard of the fume hood surface; When the air quality is equal to the preset standard, maintain the current air supply wind speed of each air supply outlet.

3. The intelligent fume hood according to claim 2, characterized in that, The real-time detection of the air in the operation area of the intelligent fume hood to obtain the air quality, and the step-by-step control of the air supply outlets according to the air quality further includes: Generate a control record according to the changes in the step-by-step control of the air supply outlets for the management personnel to view the usage situation and maintain the intelligent fume hood with frequent control; Then, according to the control record, real-time feedback whether the current operation of the intelligent fume hood is a high-risk operation. When it is judged as a high-risk operation, trigger a reminder to notify the management personnel to pay high attention to the current high-risk operation.

4. The intelligent fume hood according to claim 1, characterized in that, The toxic gases include: Corrosive gases, asphyxiating gases, neurotoxic gases, inhalation toxic gases, flammable toxic gases, non-obvious toxic gases, and other toxic gases; Judge according to the air concentration of each gas in the operation area.

5. The intelligent fume hood according to claim 1, wherein The disinfection spray includes: One or more of hydrogen peroxide, peracetic acid, sodium hypochlorite, chlorine dioxide, glutaraldehyde, and ethanol are mixed in proportion.

6. The intelligent fume hood according to claim 1, characterized in that The initial environmental parameters include: Temperature and humidity parameters and air pressure parameters; The temperature and humidity parameters are set according to laboratory standards, and the air pressure parameter is lower than the current indoor air pressure.

7. The intelligent fume hood according to claim 1, wherein The lighting device includes: Ultraviolet lamps and incandescent lamps are used alternately; Or, infrared lamps and incandescent lamps are used alternately; Or, ultraviolet lamps, infrared lamps, and incandescent lamps are used alternately.

8. The intelligent fume hood according to claim 6 or 7, characterized in that, Also included: Heat the operating area tabletop of the intelligent fume hood to dry the operating area tabletop and the experimental utensils placed on the tabletop.

9. An intelligent fume hood system, which adopts the intelligent fume hood according to any one of claims 1-8, and is characterized in that, It includes: A cabinet body, a movable window, air supply outlets arranged at equal intervals on the inner wall of the cabinet body along the moving direction of the window, a wind speed sensor, a temperature and humidity sensor, an air outlet, and an exhaust fan; In addition, a disinfection spray device is arranged on the moving side wall of the window; lighting devices are arranged at the two top corners inside the cabinet body; When in use, the window is opened and the air supply outlets supply air into the cabinet body. The wind speeds of the air supply outlets gradually increase to form wind speed layers, and a wind pressure difference is formed between adjacent wind speed layers, so that the air in the cabinet body flows from the low wind speed layer to the high wind speed layer; wherein the wind speed of the air supply outlet is obtained by collecting through the wind speed sensor; When closed, the window is closed, and the air supply outlets are closed one by one in the reverse order of opening, and the exhaust fan is turned on to extract the air in the cabinet body from the air outlet; and the disinfection spray device sprays disinfection spray into the cabinet body along with the movement of the window.

10. A laboratory, characterized in that, It includes: The intelligent fume hood according to any one of claims 1-8.

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