Microbial decontamination capacity test chamber

Abstract

The utility model discloses a kind of microbial purification capacity test test cabin, comprising: cabin, cabin has cabin door and is used for injecting microorganism microbial sample inlet, to be detected purification sample can pass through cabin door in and out cabin and can carry out microbial purification to air in cabin;Sensor is set in cabin, sensor can detect temperature and humidity in cabin;Temperature regulating assembly, temperature regulating assembly can adjust temperature in cabin;Humidity regulating assembly, humidity regulating assembly can adjust humidity in cabin;Microorganism injection assembly, the output end of microorganism injection assembly is communicated with microbial sample inlet and is used for injecting microorganism in cabin;Microorganism collection detection assembly, microorganism collection detection assembly can detect the content of microorganism in cabin.The above-mentioned microbial purification capacity test test cabin, the detection of the purification effect of to-be-detected purification sample is convenient.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and in particular to a test chamber for testing microbial purification capacity. Background Technology

[0002] With the continuous advancement of air purification technology and increased consumer concern for a healthy environment, air purification strategies (such as air purifiers, fresh air systems, and indoor air purification materials) have entered a period of rapid growth. This is especially true after the pandemic, as public health and safety requirements for air quality have become more stringent. Among these factors, microorganisms in the indoor environment (such as bacteria, fungi, and viruses) are a significant contributor to air quality; they are not only allergens and pathogens but can also threaten the immune system.

[0003] However, there are still many problems in how to assess the ability of airborne microbial control strategies to purify microorganisms in the environment. Traditional testing methods mostly rely on colony counting or sample culture under laboratory conditions. These methods are not only complex and time-consuming, but also fail to accurately reflect the purification effect of equipment in daily use.

[0004] Therefore, how to facilitate the detection of purification effects is a problem that urgently needs to be solved by those in this technical field. Utility Model Content

[0005] In view of this, the present invention provides a test chamber for testing microbial purification capacity to facilitate the detection of purification effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A test chamber for microbial purification capacity includes:

[0008] The chamber has a door and a microbial inlet for injecting microorganisms. The purified sample to be tested can enter and exit the chamber through the door and can purify the air inside the chamber with microorganisms.

[0009] Sensors installed inside the cabin are capable of detecting the temperature and humidity inside the cabin.

[0010] A temperature regulation component, which is capable of regulating the temperature inside the cabin;

[0011] A humidity control component, which is capable of regulating the humidity inside the cabin;

[0012] A microbial injection component, wherein the output end of the microbial injection component is connected to the microbial inlet and is used to inject microorganisms into the chamber;

[0013] A microbial collection and detection component, which is capable of detecting the content of microorganisms in the chamber.

[0014] Optionally, in the above-mentioned microbial purification capacity test chamber, the temperature regulation component includes a temperature regulating sleeve disposed inside the chamber, the temperature regulating sleeve being disposed along the inner wall of the chamber and capable of heating the air inside the chamber.

[0015] Optionally, the above-mentioned microbial purification capacity test chamber meets at least one of the following requirements:

[0016] A thermoelectric cooler and a second temperature detection device are disposed inside the temperature regulating sleeve. The thermoelectric cooler can heat or cool the fluid inside the temperature regulating sleeve. The second temperature detection device is communicatively connected to the thermoelectric cooler. The number of thermoelectric coolers is at least one.

[0017] Connect the temperature regulating sleeve to the pressure relief port outside the cabin;

[0018] It also includes a water circulation pump, wherein the temperature control jacket has a fluid inlet and a fluid outlet communicating with its interior, the inlet of the water circulation pump is connected to the fluid outlet, and the outlet of the water circulation pump is connected to the fluid inlet;

[0019] A flow guide vane is installed inside the temperature regulating sleeve and corresponds to the corner of the cabin;

[0020] An insulating support rod for fixing the temperature regulating sleeve is provided between the inner wall of the cabin and the temperature regulating sleeve.

[0021] The temperature regulating sleeve is composed of metal and / or polymer materials.

[0022] Optionally, in the above-mentioned microbial purification capacity test chamber, the sensor is capable of detecting the temperature inside the chamber and is communicatively connected to the semiconductor refrigeration chip inside the temperature control sleeve.

[0023] Optionally, in the above-mentioned microbial purification capacity test chamber, the inner wall of the chamber has a heat insulation layer, and the temperature regulating sleeve is located inside the heat insulation layer.

[0024] Optionally, in the above-mentioned microbial purification capacity test chamber, the humidity adjustment component is disposed outside the chamber, and the chamber has a humidity-adjusting air outlet and a humidity-adjusting air inlet;

[0025] The humidity regulating component includes:

[0026] Humidification equipment;

[0027] The fan has an air inlet and an air outlet;

[0028] The first gas transmission section connects the fan inlet and the humidity regulating inlet.

[0029] The second gas transmission section connects the fan outlet and the humidity control outlet, and the steam outlet of the humidification equipment is connected to either the first gas transmission section or the second gas transmission section.

[0030] Optionally, in the above-mentioned microbial purification capacity test chamber, the second gas transmission section has a Venturi effect air duct, and the steam outlet of the humidification device is connected to the steam inlet of the Venturi effect air duct.

[0031] Optionally, the above-mentioned microbial purification capacity test chamber may also include at least one of the following:

[0032] A first semiconductor refrigeration chip is disposed between the outlet of the Venturi effect air duct and the humidity regulating air outlet;

[0033] A second semiconductor refrigeration chip is disposed between the Venturi effect air duct and the steam outlet of the humidification device;

[0034] The steam inlet of the Venturi effect duct has unidirectional guide vanes that suppress backflow.

[0035] Optionally, in the above-mentioned microbial purification capacity test chamber, the humidity control component shall at least satisfy one of the following:

[0036] The first gas transmission section has a dehumidifier;

[0037] The humidification device has a safety pressure relief port;

[0038] The sensor is capable of detecting the humidity inside the cabin and is communicatively connected to at least one of the humidification device and the dehumidifier.

[0039] Optionally, in the above-mentioned microbial purification capacity test chamber, the chamber body also has an air inlet for injecting sterile gas and an exhaust pressure relief port for discharging gas from the chamber body.

[0040] It also includes an air intake device connected to the air inlet and an exhaust pressure relief device connected to the exhaust pressure relief port.

[0041] Optionally, the above-mentioned microbial purification capacity test chamber also includes a centrifugal fan installed inside the chamber. The centrifugal fan has a gas circulation inlet and a gas circulation outlet located inside the chamber, and the gas circulation inlet and the gas circulation outlet have different orientations.

[0042] Optionally, in the above-mentioned microbial purification capacity test chamber, the centrifugal fan meets at least one of the following requirements:

[0043] The gas circulation inlet is equipped with a partitioned baffle or a damper.

[0044] The gas circulation outlet is equipped with a partitioned guide plate or a wind valve.

[0045] An air valve is provided between the centrifugal fan and the air inlet to control the opening and closing of the connection between the centrifugal fan and the air inlet;

[0046] A damper is provided between the centrifugal fan and the humidity regulating outlet of the humidity regulating component to control the on / off connection between the centrifugal fan and the humidity regulating outlet.

[0047] The cabin is equipped with a micro-pressure sensor, which is communicatively connected to the centrifugal fan.

[0048] The gas circulation outlet and / or the gas circulation inlet are equipped with high temperature or low temperature compensation devices.

[0049] Optionally, the above-mentioned microbial purification capacity test chamber meets at least one of the following requirements:

[0050] It also includes an air pump installed outside the cabin, and a switch valve is provided between the air outlet of the air pump and the air inlet of the cabin;

[0051] It also includes a sample rack installed inside the chamber for placing purified samples to be tested;

[0052] The cabin also includes a sterilization device for sterilizing the interior of the cabin.

[0053] The cabin also includes a lighting device for illuminating the interior of the cabin;

[0054] The microbial purification capacity test chamber has an anti-adhesion coating on its inner wall, which comes into contact with microorganisms.

[0055] The cabin is composed of metal plates and / or polymer materials;

[0056] The chamber is equipped with a power outlet capable of supplying power to the purified sample to be tested, which requires electrical energy.

[0057] Optionally, in the above-mentioned microbial purification capacity testing chamber, the exhaust pressure relief device includes:

[0058] A filter is installed at the connection between the exhaust vent and the cabin.

[0059] A switch control valve is installed at one end of the exhaust pressure relief port located outside the cabin;

[0060] A pressure relief pump is installed outside the cabin and connected to the switch control valve;

[0061] A pressure sensor is installed inside the chamber to detect the pressure inside the chamber. The pressure sensor is linked to the switch control valve and the pressure relief pump to control the pressure inside the chamber.

[0062] Optionally, in the above-mentioned microbial purification capacity testing chamber, the microbial injection component includes:

[0063] A microbial sample inlet connecting the inside and outside of the chamber;

[0064] A microbial generator is installed outside the cabin, which is capable of generating microorganisms and outputting them through its microbial outlet.

[0065] A microbial supply pipeline is connected between the microbial outlet and the microbial inlet of the microbial generator. The microbial supply pipeline has an on / off control valve for controlling the opening and closing of the microbial supply pipeline. The on / off control valve is linked to the microbial generator and is used to inject microorganisms into the chamber.

[0066] Optionally, in the above-mentioned microbial purification capacity testing chamber, the microbial collection and detection component includes:

[0067] Microbial detection inlet connecting the inside and outside of the cabin;

[0068] A microbial detection outlet connecting the inside and outside of the chamber is provided with an on / off valve for at least one of the microbial detection outlet and the microbial detection inlet.

[0069] A microbial flow pipe is installed outside the cabin and connects the microbial detection inlet and the microbial detection outlet. The microbial flow pipe has a microbial sampler and a peristaltic air pump. The peristaltic air pump drives the fluid in the microbial flow pipe to flow from the microbial detection inlet to the microbial detection outlet.

[0070] As can be seen from the above technical solution, the microbial purification capacity testing chamber provided by this utility model allows the sample to be tested to be placed inside the chamber through a door. Sensors inside the chamber detect at least one of the temperature and humidity within the chamber. A temperature control component regulates the temperature, and a humidity control component regulates the humidity, creating an environment within the chamber that meets the testing conditions. The output of a microbial injection component is connected to a microbial inlet to inject microorganisms into the chamber. The sample to be tested then purifies the air inside the chamber, altering the microbial content. A microbial collection and detection component detects the microbial content within the chamber, allowing the determination of the purification effect of the sample on the air inside the chamber. In other words, the microbial purification capacity testing chamber provided by this utility model can regulate the temperature and humidity inside the chamber through temperature and humidity control components to simulate a real daily use environment (such as a room, elevator, or other public environment), thus reflecting the purification effect of the sample in such an environment and facilitating the testing of the purification effect. Attached Figure Description

[0071] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0072] Figure 1 This is a schematic diagram of the main structure of the microbial purification capacity testing chamber provided in an embodiment of the present invention;

[0073] Figure 2 A side view of the microbial purification capacity testing chamber provided in this embodiment of the utility model. Detailed Implementation

[0074] This utility model discloses a test chamber for testing microbial purification capacity, so as to facilitate the detection of purification effect.

[0075] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0076] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a microbial purification capacity testing chamber, including a chamber body 1, a sensor 22, a temperature control component, a humidity control component, a microbial injection component, and a microbial collection and detection component. The chamber body 1 has a door 2 and a microbial inlet 9 for injecting microorganisms. The purified sample can enter and exit the chamber body 1 through the door 2, and the air inside the chamber body 1 can be purified by microorganisms. The sensor 22 is disposed inside the chamber body 1 and can detect the temperature and humidity inside the chamber body 1. The temperature control component can regulate the temperature inside the chamber body 1. The humidity control component can regulate the humidity inside the chamber body 1. The output end of the microbial injection component is connected to the microbial inlet 9 and is used to inject microorganisms into the chamber body 1. The microbial collection and detection component can detect the content of microorganisms inside the chamber body 1.

[0077] The microbial purification capacity testing chamber provided in this embodiment allows the sample to be tested to be placed inside the chamber 1 through the chamber door 2. Sensors 22 inside the chamber 1 detect at least one of the temperature and humidity within the chamber 1. A temperature regulation component is used to adjust the temperature, and a humidity regulation component adjusts the humidity within the chamber 1, creating an environment where the temperature and humidity meet the testing conditions. The output end of a microbial injection component is connected to a microbial inlet 9 to inject microorganisms into the chamber 1. The sample to be tested then purifies the air inside the chamber 1 through microbial means, altering the microbial content within the chamber 1. A microbial collection and detection component detects the microbial content within the chamber 1, allowing the determination of the purification effect of the sample on the air within the chamber 1. That is, the microbial purification capacity test chamber provided in this embodiment of the present invention can adjust the temperature and humidity inside the chamber 1 through the temperature adjustment component and the humidity adjustment component to simulate the real daily use environment (such as a room, elevator or other public environment), so as to reflect the purification effect of the sample to be tested in the daily use environment and facilitate the detection of the purification effect of the sample to be tested.

[0078] The sensor 22 may include at least one temperature and humidity sensor to detect the humidity and temperature inside the chamber 1. Alternatively, the sensor 22 may include at least one temperature sensor and at least one humidity sensor to detect the temperature inside the chamber 1 and the humidity inside the chamber 1 through the humidity sensor.

[0079] In some embodiments, the temperature regulating assembly includes a temperature regulating sleeve 15 disposed within the chamber 1. The temperature regulating sleeve 15 is disposed along the inner wall of the chamber 1 and is capable of heating the air inside the chamber 1. Hot water can flow through the interior of the temperature regulating sleeve 15 to regulate the air temperature inside the chamber 1 through heat exchange.

[0080] The temperature regulating jacket 15 can be a water-heated temperature regulating jacket, in which the heating fluid flowing inside is water or other liquid; or it can be an air-heated temperature regulating jacket, in which the heating fluid flowing inside is air or other gas.

[0081] In the microbial purification capacity testing chamber, a thermoelectric cooler 16 and a second temperature detection device 17 are installed inside a temperature-regulating sleeve 15. The thermoelectric cooler 16 can heat or cool the fluid inside the temperature-regulating sleeve 15. The second temperature detection device 17 is communicatively connected to the thermoelectric cooler 16. At least one thermoelectric cooler 16 can be used. A thermoelectric cooler, also called a thermoelectric cooler, is a type of heat pump. In this embodiment, the thermoelectric cooler 16 has two functions: both cooling and heating. Therefore, the thermoelectric cooler 16 can heat and cool the fluid inside the temperature-regulating sleeve 15 to adjust the fluid temperature.

[0082] Alternatively, the aforementioned semiconductor cooling chip 16 can be replaced with other devices capable of heating or cooling the fluid within the temperature-regulating sleeve 15 (such as a temperature control device with both cooling and heating functions, or a separate device capable of cooling or heating). These will not be elaborated upon here and are all within the scope of protection.

[0083] The thermoelectric cooler 16 can be a single chip or multiple chips. In an embodiment with multiple thermoelectric coolers 16, adjusting the temperature regulating sleeve 15 using multiple thermoelectric coolers 16 can effectively improve the heating and cooling rates of the temperature regulating sleeve 15 during the experiment. Furthermore, even if some thermoelectric coolers 16 malfunction, the others can still function normally, without affecting the temperature regulation function of the temperature regulating component.

[0084] The microbial purification capacity test chamber provided in this embodiment of the utility model also includes a pressure relief port 18 connecting the temperature control sleeve 15 and the outside of the chamber body 1; wherein, the pressure relief port 18 can be a mechanical / electronic dual redundant pressure relief port, which can simultaneously trigger pressure relief when the pressure inside the temperature control sleeve 15 exceeds the pressure, so as to ensure the safety of pressure relief.

[0085] To achieve water circulation, the microbial purification capacity testing chamber also includes a water circulation pump (such as a water circulation diaphragm pump). The temperature control jacket 15 has a fluid inlet 19 and a fluid outlet 20 communicating with its interior. The fluid inlet 19 can be connected to the outlet of the water circulation pump (such as a water circulation diaphragm pump), and the fluid outlet 20 is connected to the inlet of the water circulation pump. When the water circulation pump is started, the fluid inside the temperature control jacket 15 flows from its fluid inlet 19 to its fluid outlet 20.

[0086] Furthermore, it also includes a guide vane 21 disposed inside the temperature regulating sleeve 15 and corresponding to the corner of the chamber 1. Through the above arrangement, the guide vane 21 can guide the part corresponding to the corner of the temperature regulating sleeve 15 and the chamber 1, so that the water flow can pass smoothly through the corner structure.

[0087] In this embodiment, an insulating support rod 39 for fixing the temperature regulating sleeve 15 is provided between the inner wall of the chamber 1 and the temperature regulating sleeve 15. By connecting the inner wall of the chamber 1 and the temperature regulating sleeve 15 with the insulating support rod 39, the inner wall of the chamber 1 and the temperature regulating sleeve 15 are insulated while fixing the temperature regulating sleeve 15. This effectively prevents heat exchange between the temperature regulating sleeve 15 and the outside of the chamber 1, and improves the temperature regulation effect of the temperature regulating sleeve 15 on the inside of the chamber 1.

[0088] Specifically, the temperature regulating jacket 15 is composed of metal and / or polymer materials. Metals have excellent thermal conductivity, and materials such as stainless steel, in addition to good thermal conductivity, also possess corrosion resistance. Polymer materials can also be made of materials with good thermal conductivity, and can also be made to have high strength or excellent corrosion resistance.

[0089] To improve automation, sensor 22 can detect the temperature inside the chamber 1 and is communicatively connected to the thermoelectric cooler 16 inside the temperature regulating sleeve 15. Specifically, the thermoelectric cooler 16 and the temperature regulating sleeve 15 can be controlled in a closed loop using a PID (Proportion-Integral-Derivative) controller to regulate the temperature inside the chamber 1.

[0090] The inner wall of the cabin 1 has a heat insulation layer 14. By setting the heat insulation layer 14, the temperature stability inside the cabin 1 is ensured, heat loss is reduced, and the impact of the outside temperature on the inside environment is reduced.

[0091] Furthermore, the temperature regulating jacket 15 is located inside the heat insulation layer 14, and can play a role in temperature equalization through the heat insulation layer 14, so that the temperature regulating jacket 15 can exchange heat evenly with the air inside the cabin 1.

[0092] The humidity control component is located outside the chamber 1, which has a humidity-regulating air outlet 5 and a humidity-regulating air inlet 6. Because the humidity control component is located outside the chamber 1, it effectively avoids occupying internal space. Furthermore, the humidity control component includes a humidifier 31, a fan 29, a first gas transmission section, and a second gas transmission section. The fan 29 has a fan inlet and a fan outlet; the first gas transmission section connects the fan inlet and the humidity-regulating air inlet 6; the second gas transmission section connects the fan outlet and the humidity-regulating air outlet 5. The steam outlet of the humidifier 31 is connected to either the first or second gas transmission section. Through this arrangement, gas can flow along the circulating flow structure formed by the fan outlet of the fan 29, the second gas transmission section, the interior of the chamber 1, and the first gas transmission section. The steam from the humidifier 31 is injected into the first or second gas transmission section through its steam outlet, so that it can flow into the interior of the chamber 1 for humidity regulation.

[0093] The humidification device 31 can be a steam humidifier or an ultrasonic atomizer.

[0094] In some embodiments, the second gas transmission section includes a Venturi effect duct 30, and the steam outlet of the humidifier 31 is connected to the steam inlet of the Venturi effect duct 30. It is understood that the Venturi effect duct generates negative pressure by accelerating the airflow, thereby achieving gas adsorption and flow. The steam inlet of the Venturi effect duct 30 can be located at the position with the smallest cross-section of the Venturi effect duct 30, so that the steam flowing from the steam outlet of the humidifier 31 can smoothly enter the interior of the Venturi effect duct 30.

[0095] Furthermore, the microbial purification capacity test chamber may also include a first semiconductor cooling chip 34 disposed between the outlet of the Venturi effect air duct 30 and the humidity-controlled air outlet 5. That is, the steam entering the Venturi effect air duct 30 will pass through the first semiconductor cooling chip 34 for temperature regulation before flowing to the humidity-controlled air outlet 5 through its outlet, so as to stabilize the temperature of the gas discharged from the humidity-controlled air outlet 5.

[0096] The microbial purification capacity testing chamber may also include a second semiconductor cooling chip 32 disposed between the Venturi effect air duct 30 and the steam outlet of the humidification device 31. That is, the steam flowing from the steam outlet of the humidification device 31 is first conditioned by the second semiconductor cooling chip 32 before flowing into the Venturi effect air duct 30, in order to further stabilize the temperature of the gas discharged from the humidification outlet 5. Furthermore, this also reduces the steam temperature entering the Venturi effect air duct 30, preventing the service life of the Venturi effect air duct 30 from being affected by excessively high steam temperatures.

[0097] The steam inlet of the Venturi effect duct 30 has unidirectional guide vanes that suppress backflow. These unidirectional guide vanes guide the steam entering the Venturi effect duct 30 through the steam inlet towards the humidity regulating outlet 5. The backflow suppression effect of the unidirectional guide vanes prevents steam from flowing towards the fan 29, ensuring the stable operation of the fan 29 and extending its service life.

[0098] In some embodiments, the first gas transmission section includes a dehumidifier 28; wherein the dehumidifier 28 can be a semiconductor condenser dehumidifier to prevent condensation. The dehumidifier 28 dehumidifies the gas entering the first gas transmission section through the humidification inlet 6, thereby preventing condensation and avoiding water vapor (condensation, water droplets or steam) from entering the fan 29 and affecting the operation of the fan 29.

[0099] Among them, the fan 29 can be a variable frequency axial flow fan or other types of fans. No specific restrictions are imposed here, and all are within the scope of protection.

[0100] To improve safety, the humidifier 31 has a safety pressure relief port 33. When the internal pressure of the humidifier 31 is too high (exceeding the preset pressure value), the pressure is released through the safety pressure relief port 33 manually or automatically.

[0101] Sensor 22 is capable of detecting the humidity inside the chamber 1 and is communicatively connected to at least one of the humidifier 31 and the dehumidifier 28. In embodiments where sensor 22 can detect both temperature and humidity inside the chamber 1, sensor 22 can be a temperature and humidity sensor. The communicative connection between sensor 22 and the humidifier 31 allows the humidifier 31 to be controlled based on the humidity information detected by sensor 22. Specifically, at least one of the on / off state of the humidifier 31 and the flow rate of its output steam can be controlled. Similarly, the communicative connection between sensor 22 and the dehumidifier 28 allows the dehumidifier 28 to be controlled based on the humidity information detected by sensor 22. Specifically, at least one of the on / off state of the dehumidifier 28 and its dehumidification intensity can be controlled.

[0102] The microbial purification capacity testing chamber provided in this embodiment of the invention includes an air inlet 3 for injecting sterile gas and an exhaust pressure relief port 7 for discharging gas from the chamber 1. The chamber also includes an air intake device connected to the air inlet 3 and an exhaust pressure relief device connected to the exhaust pressure relief port 7. Through these configurations, the air intake device and the exhaust pressure relief device work together to form a fresh air system within the chamber 1 (a closed environment), facilitating the introduction of fresh air into the chamber 1. This makes it easier to simulate the introduction of fresh air into a closed environment and to detect changes in microorganisms in the environment by the sample to be purified.

[0103] Furthermore, the microbial purification capacity testing chamber provided in this embodiment of the invention also includes a centrifugal fan 23 disposed within the chamber body 1. The centrifugal fan 23 has a gas circulation inlet 24 and a gas circulation outlet 25 located within the chamber body 1, with the gas circulation inlet 24 and the gas circulation outlet 25 having different orientations. When the centrifugal fan 23 is running, it enables the flow of gas within the chamber body 1, from the gas circulation inlet 24 to the gas circulation outlet 25, thereby simulating the spread of microorganisms through indoor airflow.

[0104] In some embodiments, the gas circulation inlet 24 is provided with a partitioned baffle to facilitate adjustment of the air intake direction. A damper may also be provided in the gas circulation inlet 24 to control the opening and closing of the gas circulation inlet 24.

[0105] Similarly, the gas circulation outlet 25 is equipped with a partitioned baffle to facilitate adjustment of the air intake direction. A damper can also be installed at the gas circulation outlet 25 to control the opening and closing of the gas circulation outlet 25.

[0106] The air intake chamber 1 has an air inlet 3 for injecting sterile gas. A control valve is installed between the centrifugal fan 23 and the air inlet 3 to control the on / off state of the connection between the centrifugal fan 23 and the air inlet 3. The control valve can be either electric or manual. When the centrifugal fan 23 is connected to the air inlet 3, the sterile gas injected into the chamber 1 from outside can be mixed with the air circulated within the chamber 1 by the centrifugal fan 23, thus mimicking a fresh air system. The sterile gas can be sterile clean air or sterilized gas to prevent the gas injected from outside the chamber 1 from affecting microorganisms in the test environment.

[0107] Furthermore, a damper is installed between the centrifugal fan 23 and the humidity regulating outlet 5 of the humidity regulating component to control the on / off connection between the centrifugal fan 23 and the humidity regulating outlet 5. The damper can be either electric or manual. When the centrifugal fan 23 is connected to the humidity regulating outlet 5, the steam generated by the humidification device 31 can be injected into the chamber 1 through the gas circulation outlet 25 of the centrifugal fan 23, thereby improving the efficiency of humidity regulation.

[0108] To facilitate pressure adjustment within chamber 1, a micro-pressure sensor 26 is installed inside chamber 1, and the micro-pressure sensor 26 is communicatively connected to the centrifugal fan 23. In this embodiment, the micro-pressure sensor 26 can be correspondingly positioned at the gas circulation outlet 25. The micro-pressure sensor 26 is linked with the centrifugal fan 23, and staged PID control can be used to adjust the airflow speed within chamber 1.

[0109] The gas recirculation outlet 25 and / or gas recirculation inlet 24 are equipped with a high-temperature or low-temperature compensation device 44. The high-temperature or low-temperature compensation device 44 can further adjust the temperature of the gas recirculation outlet 25 and / or gas recirculation inlet 2, so as to improve the rapid temperature control of the cabin 1.

[0110] In some embodiments, the microbial purification capacity testing chamber further includes an air pump 27 disposed outside the chamber body 1. The air pump 27 can be a centrifugal air pump or other types of air pumps. A switching valve 4 is provided between the air outlet of the air pump 27 and the air inlet 3 of the chamber body 1. The switching valve 4 can be an electric butterfly valve. When the switching valve 4 is open, starting the air pump 27 allows sterile gas to be injected into the chamber body 1 through the air inlet 3.

[0111] The microbial decontamination capacity testing chamber may also include a sample shelf 38 installed within the chamber body 1 for placing the decontamination samples to be tested. Multiple decontamination samples can be placed using the sample shelf 38. Furthermore, the arrangement of the decontamination samples in a closed environment can be simulated by adjusting the structure and height of the sample shelf 38.

[0112] The chamber 1 may also include a sterilization device for sterilizing the interior of the chamber 1, which may be an ultraviolet sterilization lamp 40 installed on the top wall inside the chamber 1.

[0113] The chamber 1 may also include a lighting device for illuminating the interior of the chamber 1. The lighting device may be a lamp installed on the ceiling wall inside the chamber 1. The ultraviolet sterilization lamp 40 may be the same light-emitting device (ultraviolet lamp) as the lighting lamp, or two light-emitting devices may be used, one for the ultraviolet sterilization lamp 40 and the other for the lighting lamp.

[0114] The microbial purification capacity testing chamber has an anti-adhesion coating on its inner walls, which come into contact with microorganisms. This inner wall can include the inner wall of the chamber body 1 and the inner walls of other components such as pipes that may come into contact with microorganisms, thereby improving testing accuracy. The anti-adhesion coating prevents microorganisms from adhering to the inner walls, thus improving the accuracy of controlling the microbial content in the air.

[0115] The cabin 1 is composed of metal plates and / or polymer materials. The metal plates can be iron plates or stainless steel, and the polymer materials are preferably high-strength polymer materials.

[0116] The purified sample to be tested can be a purification product that does not require power, such as a structural component made of purification materials. Alternatively, it can be a purification device that requires power.

[0117] To facilitate the use of purification equipment that requires power, the chamber 1 is equipped with a power socket that can supply power to the purification samples to be tested that require electrical energy.

[0118] The microbial purification capacity testing chamber provided in this embodiment of the invention also includes an exhaust pressure relief device. The exhaust pressure relief device includes: an exhaust pressure relief port 7 disposed within the chamber 1 and connecting the inside and outside of the chamber 1; a filter 35 disposed at the connection point between the exhaust pressure relief port 7 and the inside of the chamber 1; and a switch control valve 8 disposed at the end of the exhaust pressure relief port 7 located outside the chamber 1. The switch control valve 8 can be an electric ball valve, a manual ball valve, a solenoid valve, or other valves, such as a butterfly valve, either manually or electrically; a pressure relief pump 36 disposed outside the chamber 1 and connected to the switch control valve 8; wherein the pressure relief pump 36 can be an electric pressure relief pump. A pressure sensor 37 disposed inside the chamber 1 and used to detect the pressure inside the chamber 1 is linked with the switch control valve 8 and the pressure relief pump 36 to control the internal pressure of the chamber 1. By providing the exhaust pressure relief device, it is easy to discharge the gas inside the chamber 1. Combined with the injection of sterile gas through the air inlet 3, it can more realistically simulate a fresh air system.

[0119] In some embodiments, the microbial injection assembly includes: a microbial inlet 9 connecting the inside and outside of the chamber 1; a microbial generator 41 disposed outside the chamber 1, capable of generating microorganisms and outputting them through its microbial outlet; and a microbial supply pipe connected between the microbial outlet of the microbial generator 41 and the microbial inlet 9, the microbial supply pipe having an on / off control valve 10 for controlling the opening and closing of the microbial supply pipe, the on / off control valve 10 being linked with the microbial generator 41 for injecting microorganisms into the chamber 1. The microorganisms may be bioaerosols and / or biodroplets, allowing them to suspend in the environment.

[0120] In some embodiments, the microbial collection and detection assembly includes: a microbial detection inlet 11 connecting the inside and outside of the chamber 1; a microbial detection outlet 12 connecting the inside and outside of the chamber 1, wherein at least one of the microbial detection outlet 12 and the microbial detection inlet 11 is provided with an on / off valve 13; and a microbial flow pipe disposed outside the chamber 1 and connecting the microbial detection inlet 11 and the microbial detection outlet 12, the microbial flow pipe having a microbial sampler 42 and a peristaltic air pump 43, the peristaltic air pump 43 driving the fluid in the microbial flow pipe to flow from the microbial detection inlet 11 to the microbial detection outlet 12. The peristaltic air pump 43 is preferably a variable frequency peristaltic air pump.

[0121] Specifically, the microbial collection and detection component can be an aerosol collection device; that is, the microbial sampler 42 can be an aerosol sampler or a filter membrane sampler. Depending on the testing requirements, a secondary or higher-level microbial aerosol and / or droplet collector may be installed. The secondary bioaerosol and / or droplet collector can be an impact-type microbial sampler or a liquid impact-type microbial sampler to ensure accurate determination of the concentration of microorganisms in the air. Aerosol samplers preferably include real-time aerosol samplers and LAMP (loop-mediated isothermal amplification) devices.

[0122] Specifically, a microbial generator 41 is installed at one end of the microbial inlet 9 outside the chamber 1. An on / off control valve 10 is linked to the microbial generator 41 to dynamically introduce microorganisms such as bioaerosols and / or droplets into the chamber 1. A microbial sampler 42 is installed at one end of the microbial detection inlet 11 outside the chamber 1, capable of real-time sampling. A peristaltic air pump 43 is installed downstream of the microbial sampler 42, away from the microbial detection inlet 11, to collect microorganisms (such as bioaerosols) within the chamber 1. The outlet of the peristaltic air pump 43 is connected to the microbial detection outlet 12.

[0123] The specific tests are as follows:

[0124] First, the purified sample to be tested is placed on the sample rack 38 by opening the door 2. The temperature control sleeve 15 and the sensor 22 (temperature and humidity sensor) regulate the temperature inside the chamber 1 through PID closed-loop control. The centrifugal fan 23 (variable frequency centrifugal fan) and the ultraviolet sterilization lamp 40 in the chamber 1 are turned on to regulate the airflow inside the chamber 1 and sterilize the chamber 1 before testing. After sterilization, the air pump 27 is started to inject sterile clean air into the chamber 1 through the air inlet 3 to expel the ozone generated by the ultraviolet irradiation of the ultraviolet sterilization lamp 40 inside the chamber 1 to ensure that the air inside the chamber 1 meets the test requirements or to regulate the pressure inside the chamber.

[0125] Secondly, after the interior of the chamber 1 is sterilized, the humidifier 31 or dehumidifier 28 is turned on and the sensor 22 (temperature and humidity sensor) is used to adjust the humidity inside the chamber 1 through PID closed-loop control.

[0126] Then, once the temperature, humidity, and airflow inside chamber 1 meet the test requirements, the microbial generator 41 (bioaerosol and / or droplet generator) is turned on to inject microorganisms (such as bioaerosols and / or droplets) of different particle sizes (such as 0.02μm-10μm) into chamber 1. According to the test requirements, the microbial collection and detection component is turned on after a certain period of time following the injection of microorganisms to collect the microorganisms in chamber 1.

[0127] According to actual testing requirements, microorganisms can be dynamically introduced into chamber 1 at certain intervals to test the continuous purification ability of the purified sample against microorganisms in the air.

[0128] After the test is completed, turn on the ultraviolet sterilization lamp 40 and / or inject sterilization gas into the chamber 1 through the air inlet 3 to sterilize the interior of the chamber 1 and its components.

[0129] The microbial purification capacity testing chamber provided in this embodiment relies on colony counting or sample culture under laboratory conditions, and has a simple structure and low cost. It provides a clean testing chamber with controllable temperature, relative humidity, and microbial concentration, offering a stable and standard testing environment. This allows for the testing of the static or dynamic purification capacity of purified samples (such as purification equipment or materials) against airborne microorganisms in a closed environment, ensuring the safety and operability of the test and effectively avoiding the influence of environmental factors or other uncertainties on the test results.

[0130] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0131] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A test chamber for testing microbial purification capacity, characterized in that, include: The chamber (1) has a door (2) and a microbial inlet (9) for injecting microorganisms. The purified sample to be tested can enter and exit the chamber (1) through the door (2) and can perform microbial purification on the air inside the chamber (1). Sensors (22) installed inside the cabin (1) are capable of detecting the temperature and humidity inside the cabin (1); A temperature regulating component, which is capable of regulating the temperature inside the cabin (1); A humidity control component, which is capable of adjusting the humidity inside the cabin (1); A microbial injection component, the output end of which is connected to the microbial inlet (9) and is used to inject microorganisms into the chamber (1); Microbial collection and detection component, which is capable of detecting the content of microorganisms inside the cabin (1).

2. The microbial purification capacity testing chamber as described in claim 1, characterized in that, The temperature regulating component includes a temperature regulating sleeve (15) disposed inside the cabin (1). The temperature regulating sleeve (15) is disposed along the inner wall of the cabin (1) and is capable of heating the air inside the cabin (1).

3. The microbial purification capacity testing chamber as described in claim 2, characterized in that, Meet at least one of the following: A thermoelectric cooler (16) and a second temperature detection device (17) are disposed in the temperature regulating sleeve (15). The thermoelectric cooler (16) can heat or cool the fluid in the temperature regulating sleeve (15). The second temperature detection device (17) is communicatively connected to the thermoelectric cooler (16). The number of thermoelectric coolers (16) is at least one. Connect the temperature regulating sleeve (15) to the pressure relief port (18) outside the cabin (1); It also includes a water circulation pump. The temperature control sleeve (15) has a fluid inlet (19) and a fluid outlet (20) communicating with its interior. The inlet of the water circulation pump is connected to the fluid outlet (20), and the outlet of the water circulation pump is connected to the fluid inlet (19). A guide vane (21) is installed inside the temperature regulating sleeve (15) and corresponds to the corner of the cabin (1); A heat-insulating support rod (39) for fixing the temperature-regulating sleeve (15) is provided between the inner wall of the cabin (1) and the temperature-regulating sleeve (15); The temperature regulating sleeve (15) is composed of metal and / or polymer materials.

4. The microbial purification capacity testing chamber as described in claim 3, characterized in that, The sensor (22) is capable of detecting the temperature inside the cabin (1) and is in communication connection with the semiconductor cooling chip (16) inside the temperature regulating sleeve (15).

5. The microbial purification capacity testing chamber as described in claim 3, characterized in that, The inner wall of the cabin (1) has a heat insulation layer (14), and the temperature regulating sleeve (15) is located inside the heat insulation layer (14).

6. The microbial purification capacity testing chamber as described in claim 1, characterized in that, The humidity regulating component is disposed outside the cabin (1), and the cabin (1) has a humidity regulating air outlet (5) and a humidity regulating air inlet (6); The humidity regulating component includes: Humidification equipment (31); The fan (29) has a fan inlet and a fan outlet; The first gas transmission section connects the fan inlet and the humidity regulating inlet (6); The second gas transmission section connects the fan outlet and the humidity control outlet (5), and the steam outlet of the humidification device (31) is connected to the first gas transmission section or the second gas transmission section.

7. The microbial purification capacity testing chamber as described in claim 6, characterized in that, The second gas transmission section has a Venturi effect duct (30), and the steam outlet of the humidification device (31) is connected to the steam inlet of the Venturi effect duct (30).

8. The microbial purification capacity testing chamber as described in claim 7, characterized in that, It also includes at least one of the following: The first semiconductor cooling chip (34) is disposed between the outlet of the Venturi effect air duct (30) and the humidity regulating air outlet (5); A second semiconductor cooling chip (32) is disposed between the Venturi effect air duct (30) and the steam outlet of the humidification device (31); The steam inlet of the Venturi effect duct (30) has unidirectional guide vanes that suppress backflow.

9. The microbial purification capacity testing chamber as described in claim 6, characterized in that, The humidity control component must satisfy at least one of the following: The first gas transmission section has a dehumidifier (28); The humidification device (31) has a safety pressure relief port (33); The sensor (22) is capable of detecting the humidity inside the cabin (1) and is communicatively connected to at least one of the humidification device (31) and the dehumidifier (28).

10. The microbial purification capacity testing chamber as described in any one of claims 1-9, characterized in that, The chamber (1) also has an air inlet (3) for injecting sterile gas and an exhaust pressure relief port (7) for discharging gas from the chamber (1); It also includes an air intake device connected to the air inlet (3) and an exhaust pressure relief device connected to the exhaust pressure relief port (7).

11. The microbial purification capacity testing chamber as described in claim 10, characterized in that, It also includes a centrifugal fan (23) installed in the cabin (1), the centrifugal fan (23) having a gas circulation inlet (24) and a gas circulation outlet (25) located in the cabin (1), the gas circulation inlet (24) and the gas circulation outlet (25) having different orientations.

12. The microbial purification capacity testing chamber as described in claim 11, characterized in that, The centrifugal fan (23) satisfies at least one of the following: The gas circulation inlet (24) is equipped with a partition guide plate or a wind valve; The gas circulation outlet (25) is equipped with a partition guide plate or a wind valve; A damper is provided between the centrifugal fan (23) and the air inlet (3) to control the opening and closing of the centrifugal fan (23) and the air inlet (3); A damper is provided between the centrifugal fan (23) and the humidity regulating outlet (5) of the humidity regulating component to control the opening and closing of the centrifugal fan (23) and the humidity regulating outlet (5); The cabin (1) is equipped with a micro-pressure sensor (26), which is communicatively connected to the centrifugal fan (23); The gas circulation outlet (25) and / or the gas circulation inlet (24) are provided with a high temperature or low temperature compensation device (44).

13. The microbial purification capacity testing chamber as described in claim 1, characterized in that, Meet at least one of the following: It also includes an air pump (27) located outside the cabin (1), and a switch valve (4) is provided between the air outlet of the air pump (27) and the air inlet (3) of the cabin (1); It also includes a sample rack (38) installed inside the cabin (1) for placing the purified sample to be tested; The cabin (1) also includes a sterilization device for sterilizing the interior of the cabin (1); The cabin (1) also includes a lighting device for illuminating the interior of the cabin (1); The microbial purification capacity test chamber has an anti-adhesion coating on its inner wall, which comes into contact with microorganisms. The cabin (1) is composed of metal plates and / or polymer materials; The chamber (1) has a power socket that can supply power to the purified sample to be tested, which requires electrical energy.

14. The microbial purification capacity testing chamber as described in claim 10, characterized in that, The exhaust pressure relief device includes: A filter (35) is installed at the connection between the exhaust vent (7) and the cabin (1); A switch control valve (8) is installed at one end of the exhaust pressure relief port (7) located outside the cabin (1); A pressure relief pump (36) is installed outside the cabin (1) and connected to the switch control valve (8); A pressure sensor (37) is installed inside the cabin (1) and is used to detect the pressure inside the cabin (1). The pressure sensor (37) is linked with the switch control valve (8) and the pressure relief pump (36) to control the pressure inside the cabin (1).

15. The microbial purification capacity testing chamber as described in claim 1, characterized in that, The microbial injection component includes: Microbial inlet (9) connecting the inside and outside of the cabin (1); A microbial generator (41) is installed outside the cabin (1), which is capable of generating microorganisms and outputting them through its microbial outlet; A microbial supply pipeline is connected between the microbial outlet of the microbial generator (41) and the microbial inlet (9). The microbial supply pipeline has an on / off control valve (10) for controlling the on / off of the microbial supply pipeline. The on / off control valve (10) is linked with the microbial generator (41) and is used to inject microorganisms into the chamber (1).

16. The microbial purification capacity testing chamber as described in claim 1, characterized in that, The microbial collection and detection component includes: Microbial detection inlet (11) connecting the inside and outside of the cabin (1); A microbial detection outlet (12) connecting the inside and outside of the cabin (1) is provided with an on / off valve (13) for at least one of the microbial detection outlet (12) and the microbial detection inlet (11); A microbial flow pipe is provided outside the cabin (1) and connects the microbial detection inlet (11) and the microbial detection outlet (12). The microbial flow pipe has a microbial sampler (42) and a peristaltic air pump (43). The peristaltic air pump (43) drives the fluid in the microbial flow pipe to flow from the microbial detection inlet (11) to the microbial detection outlet (12).

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