A microbial barrier system

Abstract

The present invention discloses a microbial barrier system. The system mainly consists of a multi-channel multi-functional face mask, an air storage bag, a negative pressure source, and a microbial blocking and disinfection device. Its principle is to use the negative pressure generated by the negative pressure source to extract the waste gas exhaled by the patient, and after harmless treatment through the blocking and disinfection device, it is then discharged into the atmosphere. The present invention can significantly reduce the harmful microbial load in the patient's living environment, thereby reducing the infection risk of relevant personnel working in this environment.

Description

Technical Field

[0001] The present invention relates to medical devices, and more specifically, to a microorganism blocking system. Background Art

[0002] Infectious diseases of the respiratory system have troubled humans for thousands of years. Once there is a shortage or omission in personal protective equipment, it is very likely to cause infection. However, in the existing technologies, there is no more ideal device for blocking the discharge of microorganisms than a mask. The reason for still using masks to intercept the discharge of viruses is really a last resort. The present invention is to extract the exhaust gas exhaled by patients under the premise that the patients do not feel significantly uncomfortable, and after harmless treatment through a disinfection device, it is then discharged into the atmosphere. The harmful microorganism load in the ward air treated by this technology will be greatly reduced.

[0003] Since the virus is much smaller in volume than bacteria, the difficulty of interception is also much greater. That is to say, the interception technologies effective for viruses are usually effective for bacteria. On the contrary, it may not be the case. Therefore, the object targeted by the blocking system designed by the inventor is mainly viruses. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a microorganism blocking system for the above-mentioned defects.

[0005] The technical solution of the present invention is: a microorganism blocking system, which is characterized by mainly consisting of the following parts: a multi-channel multifunctional mask, a multifunctional mask accessory, an air extraction one-way direct connection, an air storage bag, a negative pressure source and a negative pressure air flow regulating device, an alternating current to direct current module, a microorganism interception component, and a control circuit board;

[0006] The appearance of the multi-channel multifunctional mask is similar to that of an anesthesia mask, and it is composed of a mask cover and a soft edge. There are 5 prefabricated holes on the mask cover: two air inlet holes on both sides of the upper part of the mask cover, and the air inlet holes extend outward to form an air inlet valve seat for installing an air inlet one-way valve; two spare air outlet holes on both sides of the lower part of the mask cover, which extend outward to form a spare air outlet valve seat for installing a spare air outlet one-way valve; one air outlet hole directly below the mask cover, which extends outward to form an air outlet pipe seat and a threaded air outlet pipe for connecting with the air extraction one-way direct connection;

[0007] The multifunctional mask accessories include: an air inlet one-way valve, a spare air outlet one-way valve, and an air outlet filter piece; the air inlet one-way valve and the spare air outlet one-way valve have the same structure but different opening pressures, and the latter is greater than the former; they are respectively installed on the air inlet valve seat and the spare air outlet valve seat; a filter piece seat is prefabricated on the outside of the spare air outlet one-way valve for installing the air outlet filter piece, and the two are collectively called an air outlet filter one-way valve;

[0008] The main body of the one-way exhaust gas passage is in the shape of a circular tube, and an exhaust gas one-way valve is pre-installed in the upper part of the tube cavity, and the opening pressure of the spare exhaust gas one-way valve is greater than the opening pressure of the exhaust gas one-way valve in the one-way exhaust gas passage;

[0009] The inner diameter of the air inlet of the air storage bag is the same as the lower end of the one-way air extraction straight-through port; when in use, the air inlet of the air storage bag is sleeved on the lower end of the one-way air extraction straight-through port to store the waste gas exhaled by the user;

[0010] The negative pressure source uses a micro air pump or a micro turbine fan, the air inlet end of which is connected to a one-way straight exhaust pipe through a hose to exhaust the gas in the air storage bag;

[0011] The negative pressure gas flow regulating device adopts a circuit type regulating device or a gas path type regulating device or a combination thereof;

[0012] The microorganism interception component is composed of the following components: an ultraviolet disinfection component, a microorganism filter sleeve, a chemical disinfection filter layer, and a disinfection device shell.

[0013] The ultraviolet disinfection component is composed of the following three parts: a small self-ballasted ultraviolet lamp, a spiral airflow tube, and a lamp base plate;

[0014] The lamp holder plate is made of plastic and is in the shape of a straw hat, divided into an upper and lower surface. The middle part of the upper surface is a circular protrusion, called a lamp holder seat, and its inner cavity is in the shape of a blind tube. There are two power cord holes at the top for installing the lamp holder of the above-mentioned self-ballasted ultraviolet lamp. There are several lamp holder plate fixing holes around the lamp holder plate for connecting and fixing with the disinfection device shell and the microbial filter sleeve. There is an air intake short pipe hole near the central protrusion, and the air intake short pipe of the spiral airflow tube passes through the air intake short pipe hole from below. There is a short tubular ring on the outer periphery of the air intake short pipe hole below the lamp holder plate, which is a spiral airflow tube fixing ring. The inner diameter of the spiral airflow tube fixing ring is the same as the outer diameter of the spiral airflow tube, and can tightly bind the spiral airflow tube. After the spiral airflow tube is installed according to the above method, it will not be able to move;

[0015] The spiral airflow tube is made of a transparent material that is highly transparent to ultraviolet rays and is spiral-shaped. The center of the entire spiral tube is hollow, and the space is slightly larger than the volume of the self-ballasted ultraviolet lamp. The self-ballasted ultraviolet lamp can be installed in this space. The air inlet end of the spiral airflow tube is prefabricated into a vertical short tube shape, and the air outlet end of the spiral airflow tube is also prefabricated into a vertical short tube shape. The opening of the short tube at the air outlet end faces upward and directly faces the central space. The airflow output from the short tube at the air outlet end flows upward, hits the top of the ultraviolet lamp, and then diverges to the surroundings.

[0016] The small self-ballasted ultraviolet lamp is in the shape of a short cylinder, and its volume is slightly smaller than the space in the center of the spiral airflow tube;

[0017] The microbial filter sleeve is shaped like a "Uncle Sam" top hat. There are several microbial filter sleeve fixing holes at the edge of the "top hat", which are the same in position and number as the small holes on the above-mentioned lamp socket board, and are used for fitting and fixing with the lamp socket board. When in use, the microbial filter sleeve is put upward to cover the spiral air flow pipe and the self-ballasted ultraviolet lamp in the middle thereof.

[0018] The chemical disinfection and filtration layer is composed of multiple layers of filtering materials.

[0019] The disinfection device housing is made of plastic and is cylindrical. The top is a disc with vertical edges, and there are several small holes matching the fixing holes on the lamp socket board for connecting with the lamp socket board. There are several disinfection device housing rib strips along the long axis of the cylinder on the inner wall of the middle part of the tube. The depressions between the disinfection device housing rib strips are air guide grooves, and the gas coming out of the microbial filter sleeve mainly flows downward in the air guide grooves. The space in the middle part is used to place the microbial filter sleeve and its internal components. The lower part bulges outwards, and the composite disinfection and filtration layer is installed in the inner cavity at the bottom of the disinfection device housing.

[0020] The AC to DC module is prefabricated on the control circuit board. The negative pressure source machine and the control circuit board are installed in the chassis.

[0021] Furthermore, the components of the microbial blocking system further include: a positive pressure source, a positive pressure air flow regulating device, a pressure relief valve, a pressure sensor kit, a negative ion generator module, a medicine dispenser, and a battery.

[0022] In the central part of the mask cover, there are longitudinally arranged fresh air input holes and oxygen supply holes prefabricated, and the multifunctional mask accessory is also equipped with a fresh air input short tube and an oxygen input short tube.

[0023] The positive pressure source uses a micro air pump or a micro turbine blower, and its air outlet end is connected to the fresh air input short tube on the mask cover through a hose.

[0024] The positive pressure air flow regulating device is divided into two types according to different adjustment methods and principles: a circuit type regulating device and a gas path type regulating device.

[0025] The negative ion generator module is miniature and low-power, and the electrode for generating negative ions is installed in the distal gas path of the exhaust pipe of the positive pressure source. The gas path is airtight, and the air output by the positive pressure source machine is mixed with the negative ions generated by the electrode to form mixed air, which is transported into the mask through a hose connected to the fresh air input short tube on the mask cover.

[0026] The positive pressure pipeline originates from the air outlet end of the positive pressure source machine and is divided into two branches according to different functions, air flow rates, and pipeline internal resistances: a main pipeline and a branch pipeline.

[0027] The airflow output end of the positive pressure source is connected to the main flow end of the air exhaust, and the air exhaust has three branches. Another main flow end of the air exhaust is connected to a diverter valve and then to a three-way pipe. One end of the three-way pipe is directly connected to the air outlet pipe on the surface of the chassis, and the other end is connected to the air outlet end of the medicine flavor device; the branch pipeline of the air exhaust is connected to a pressure relief valve. When the pressure in the positive pressure pipeline reaches a preset value, the pressure relief valve opens to protect the positive pressure source machine; the branch pipeline is connected to the measuring end of the pressure sensor; the branch pipeline is connected to a micro ball valve, and the airflow output end of the micro ball valve is connected to the input end of the medicine flavor device. The output end of the medicine flavor device is connected to the three-way pipe connected to the main flow pipeline through a hose, and the branch gas returns to the main flow pipeline. The above-mentioned micro ball valve adjusts the amount of gas passing through the branch air path by adjusting the valve core channel area;

[0028] The pressure sensor kit includes a pressure sensor, a micro speaker, and a warning light on the surface of the chassis; the measuring end of the pressure sensor is installed in the positive pressure gas circuit, and the signal output end is connected to the micro speaker through the control circuit board. When the pressure in the positive pressure gas circuit increases, the voltage at the sensor signal output end will be triggered to change synchronously. When the working voltage of the micro speaker is reached, the speaker sounds an alarm and the warning light is turned on;

[0029] The medicine flavor device is an odor dispersing device pre-installed on the branch pipeline, and has a cylindrical or rectangular shape, with an airflow input short tube and an airflow output short tube at both ends, which are respectively connected to the corresponding parts of the branch pipeline. The main body of the medicine flavor device is two tubular structures that are integrated into one, respectively called the medicine flavor device shell and the medicine flavor device core. The space between the two tubes is hollow, and the two are connected by snaps or threads, and are sealed by a soft material sealing ring; the medicine flavor device core is also two overlapping tubular structures, the space between the two tubes is hollow, and the two ends are closed with a common wall, and the two-layer tubular structure wall A plurality of long strip-shaped air-permeable grooves are prefabricated on the top; a medicine core made of a highly absorbent air-permeable material is prefabricated in the space between the two tubular structures of the medicine flavor device core, which is used to absorb liquid with medicinal properties or medicine flavor; an airflow input short tube is prefabricated in the center of the top of the medicine flavor device shell, and an airflow output short tube is prefabricated in the center of the top of the medicine flavor device core, and is in equal diameter communication with the inner cavity of the tubular structure inside the medicine flavor device core; the gas from the airflow input short tube cannot directly reach the airflow output short tube, and must pass through the airflow groove and the medicine core of the medicine flavor device core before reaching the airflow output short tube;

[0030] The surface of the chassis is divided into three regions: a pipeline region, a display region, and a switch knob region; the pipeline region is prefabricated with an intake short pipe and an exhaust short pipe; the knob region is pre-installed with a positive pressure source start and power adjustment knob, a negative pressure source start and function adjustment knob, a positive pressure source shunt valve adjustment knob, a negative pressure source shunt valve adjustment knob, an air flow adjustment knob for the medicine flavorer, a power switch for the negative ion generator, and an in-machine power-battery power supply conversion switch; the display region is pre-installed with an AC power indicator light, a positive pressure source working indicator light, a negative pressure source working indicator light, an ultraviolet lamp working indicator light, a negative ion generator working indicator light, and a positive pressure air circuit high-pressure alarm light; the bottom of the chassis is also divided into three regions: the heat dissipation region is pre-set with several heat dissipation holes; a medicine flavorer groove for installing the medicine flavorer, and the intake and exhaust short pipes at both ends of the medicine flavorer can be quickly docked with the quick connectors in this groove; the remaining region is a filter region for installing a filter for the positive pressure source; on the left side of the chassis, a mounting seat for the microbial interception assembly is prefabricated, and the mounting seat conforms to the shape of the disinfection device shell and can fix the disinfection device shell; above the mounting seat, an air flow interface and a power interface are prefabricated, the air flow interface is connected to the air outlet end of the negative pressure source inside the chassis and to the intake short pipe of the spiral air flow pipe outside the chassis; around the disinfection device shell, a cover that conforms to the shape of the chassis main body, is made of the same material as the chassis main body, and can be quickly removed is installed, aiming to make the whole machine look beautiful and coordinated; on the right side of the chassis, a battery that can be quickly disassembled and assembled is installed; on the top of the chassis, a handle is prefabricated.

[0031] Preferably, in the central part of the mask cover, an experimental measurement hole is also prefabricated and matched with an experimental measurement short pipe for measuring the pressure inside the mask or the air components inside the mask.

[0032] Preferably, one end of the oxygen input short pipe and the fresh air input short pipe is prefabricated with a buffer flow deflector, and the buffer flow deflector is used to buffer the oxygen and fresh air with a relatively large flow rate input into the mask, avoiding the direct impact of these two gases on the facial skin of the user and causing discomfort; the material of the buffer flow deflector is the same as that of the two short pipes, and the buffer flow deflector is composed of a flow deflector and support ribs. The surface of the flow deflector is slightly concave and conforms to the inner surface of the mask cover. The support ribs are used to connect the flow deflector with the inner openings of the oxygen input short pipe and the fresh air input short pipe. Many small holes called air holes are prefabricated on the flow deflector. When the input gas impacts the flow deflector, a part of the air flow comes out from the air holes, and another part of the air flow passes through between the support ribs and spreads out along the inner side of the mask cover, thereby buffering the pressure of the air flow.

[0033] Preferably, both the intake one-way valve and the spare exhaust one-way valve adopt pumpkin-shaped one-way valves;

[0034] The pumpkin-shaped one-way valve has a flat-round appearance and is composed of a diaphragm box, a one-way valve diaphragm, a diaphragm slider, a central shaft, and an elastic reset device. There is a hole in the center of the one-way valve diaphragm for an embedded connection with the diaphragm slider. The diaphragm slider is made of hard plastic, with an inverted T-shaped cross-section. The lower part is a very thin round sheet called the diaphragm slider support for supporting the one-way valve diaphragm. The center of the diaphragm slider is in the shape of a short tube. The outer diameter of the diaphragm slider is slightly larger than the small hole in the center of the one-way valve diaphragm, and the small hole in the center of the one-way valve diaphragm will not slip off after being sleeved on the diaphragm slider. The inner diameter of the short tube in the center of the diaphragm slider is slightly larger than the outer diameter of the central shaft, and the diaphragm slider can slide smoothly along the central shaft. The elastic reset device is made of the same material as the one-way valve diaphragm, and its shape is similar to a pumpkin. The top of the elastic reset device is a small round sheet, and there is a small hole in the center of the top small round sheet of the elastic reset device, with a diameter slightly smaller than that of the central shaft. The bottom of the elastic reset device is prefabricated into a small ring. Between the top and the bottom are several strip-shaped elastic bodies. When the top small round sheet and the bottom small ring of the elastic reset device approach each other under external pressure, the elastic bodies bulge outwards to form a shape similar to a pumpkin. The diaphragm box is made of hard plastic and is used to accommodate the completely assembled one-way valve diaphragm - diaphragm slider and elastic reset device. It is a hollow flat-round shape and is composed of two parts: the top and the bottom. There is a shallow groove on the bottom of the diaphragm box that conforms to the one-way valve diaphragm, called the one-way valve diaphragm seat. In the central area of the bottom, there is a small shallow groove, and the two grooves are connected by rib strips. The central groove conforms to the bottom of the diaphragm slider and has a small hole in the center, with a diameter slightly smaller than that of the central shaft. The top of the diaphragm box is in the shape of a round sheet, and the top and the bottom are connected by relatively wide rib strips. There is also a small hole with a diameter smaller than that of the central shaft in the center of the top. The central shaft is an equal-diameter hollow metal tube, with an outer diameter slightly smaller than the inner diameter of the short tube of the diaphragm slider and slightly larger than the small holes in the centers of both ends of the diaphragm box.

[0035] The bottom structure of the elastic body has three forms: the small ring at the bottom of the elastic reset device is prefabricated into one body with the one-way valve diaphragm; the small ring at the bottom of the elastic reset device only contacts the one-way valve diaphragm and is not integrated; without using the small ring at the bottom of the elastic reset device, the lower end of the elastic body is prefabricated into one body with the one-way valve diaphragm.

[0036] The elastic reset device can also be replaced by a compression spring, preferably a pagoda-shaped compression spring.

[0037] The air extraction one-way direct-through body is in the shape of a circular tube, and an air outlet one-way valve is pre-installed in the upper part of the tube cavity. The air outlet one-way valve adopts an inverted duckbill one-way valve, which is installed in the center or on one side of the circular tube cavity of the air extraction one-way direct-through. The top of the air outlet one-way valve extends into a thin plate in a funnel shape around, and is integrated with the inner cavity of the air extraction one-way direct-through, called a closed body. The closed body closes the circular tube cavity except for the one-way valve inlet, forcing the gas from the air outlet pipe to only flow downward through the air outlet one-way valve and not flow backward. A transverse short tube is prefabricated at a position near the upper part of the circular tube cavity, called an air extraction pipe, and its inner diameter is the same as or slightly larger than the inlet pipe of the negative pressure source. If the one-way valve is arranged in the center of the circular tube, there is no requirement for the prefabrication position of the air extraction pipe. If the one-way valve is arranged on one side of the circular tube, the air extraction pipe must be prefabricated at its opposite position. The upper end face of the circular tube of the air extraction one-way direct-through extends around in a platform shape, and the platform diameter is the same as the outer diameter of the air outlet pipe on the mask cover. A union is prefabricated between this platform and the air extraction pipe for connecting the air extraction one-way direct-through with the air outlet pipe on the mask cover, and a soft rubber ring on the connection surface plays a sealing role.

[0038] The shape of the air storage bag can be a three-dimensional shape, similar to a medical anesthesia air bag, or a flat shape, similar to the air storage bag of a simple respirator for first aid. The microbial filter sleeve is made of a filter material with high filtration efficiency. The filter material can be the meltblown cloth used to manufacture N95 masks or N99 masks, or the filter material used to manufacture HEPA. A hydrophobic layer made of the same material as the inner layer of the N95 mask is covered on the inner surface of the filter material, and a protective layer made of the outer layer material of the N95 mask is covered on the outer surface. The chemical disinfection and filtration layer is composed of multiple layers of filtering materials. The materials that can be selected include high-efficiency filter cotton, medium-efficiency filter cotton, meltblown cloth, multi-layer cotton gauze, sponge, and activated carbon. Among them, some materials need to be impregnated with disinfectant solution.

[0039] Preferably, the apertures of the air inlet hole and the spare air outlet hole on the mask cover are both above 10 mm. The shapes and diameters of the spare air outlet hole and the air inlet hole are the same and can be interchanged. The inner diameters of the air outlet hole and the air outlet pipe are the same and must be greater than or equal to 16 mm.

[0040] The principle of the present invention:

[0041] (1) The negative pressure source gas flow rate regulating device of the present invention is divided into two types according to different regulation methods and principles: a circuit type regulating device and a gas path type regulating device. The circuit type regulating device controls the working condition of the machine by regulating the voltage or frequency conversion supplied to the micro air source, thereby regulating the amount of gas inhaled by the negative pressure source. This regulation method is commonly used in the oxygen supply device of an aquarium. The gas path type regulating device regulates the amount of gas inhaled by the negative pressure source by regulating the shunt valve pre-installed on the inhaled gas path. This air flow regulation method is widely used in medical suction devices. These two air flow regulation methods can be used alone or in combination.

[0042] The positive pressure source of the present invention uses a micro air pump or a micro turbine fan. The positive pressure air flow regulating device is divided into two types according to the different regulating methods and principles: a circuit type regulating device and a gas path type regulating device, and its principles and components are the same as those of the negative pressure source air flow regulating device.

[0043] (2) Assembly of the golden gourd-type one-way valve of the present invention: pass the central axis through the small hole in the center of the groove in the central area of the bottom of the diaphragm box, the small circular ring at the bottom of the diaphragm slider short tube-elastic resetter, the small central hole of the top small disc, and the small central hole at the top of the diaphragm box in sequence. After the assembly is completed, the small disc at the top of the elastic resetter contacts the top of the diaphragm box and the movement is restricted; the central axis is fixed by the small holes at the top and bottom of the diaphragm box and cannot move. The elastic body of the assembled one-way valve protrudes outward like a golden gourd, and the diaphragm slider can move smoothly along the central axis, thereby driving the one-way valve diaphragm to move, and the one-way valve is opened and closed accordingly.

[0044] The working principle of the golden gourd type one-way valve of the present invention is as follows: when the airflow presses the one-way valve diaphragm from the bottom of the diaphragm box, the one-way valve opens. Depending on the pressure, the diaphragm opens in three ways: the edge of the diaphragm is lifted, the entire diaphragm moves upward along the central axis, or both.

[0045] (3) The output end of the positive pressure source airflow of the present invention is connected to the main flow end of an air exhaust, and the air exhaust has three branches. The other main flow end of the air exhaust is connected to a diverter valve and then to a three-way pipe. One end of the three-way pipe is directly connected to the air outlet pipe on the surface of the chassis, and the other end is connected to the air outlet end of the medicine flavoring device.

[0046] Branch pipeline one of the air exhaust is connected to a pressure relief valve. When the pressure in the positive pressure pipeline reaches a preset value, the pressure relief valve opens to protect the positive pressure source machine; branch pipeline two is connected to the measuring end of the pressure sensor; branch pipeline three is connected to a miniature ball valve, and the airflow output end of the miniature ball valve is connected to the input end of the flavor device. The output end of the flavor device is connected to the three-way pipe connected to the mainstream pipeline through a hose, and the branch gas returns to the mainstream pipeline. The above-mentioned miniature ball valve is used to adjust the amount of gas passing through the branch air circuit.

[0047] (4) The medicine flavor device of the present invention is an odor dispersing device pre-installed on the above-mentioned branch pipeline, with an air flow input short tube and an air flow output short tube at both ends, which are respectively connected to the corresponding parts of the branch pipeline. The medicine flavor device body is divided into a medicine flavor device shell and a medicine flavor device core. A medicine core made of a breathable material with strong water absorption (such as sponge) is pre-installed in the space between the two tubular structures of the medicine flavor device core. The gas from the air flow input short tube passes through the breathable groove and the medicine core of the medicine flavor device core and reaches the air flow output short tube, and the medicine liquid on the medicine core is delivered to the patient's respiratory tract in the form of extremely fine particles to obtain a therapeutic effect. The user only needs to add medicine liquid to the medicine core or replace the entire medicine flavor device core as needed to maintain continuous inhalation treatment.

[0048] (5)The spiral air duct of the present invention is made of a transparent material with high ultraviolet transmittance. Quartz glass is preferred, and special acrylic is the second choice. As the name indicates, its shape is spiral, with a very small pitch, and the upper and lower tubes are almost close to each other. The central space of the entire spiral tube is slightly larger than the volume of the self-ballasted ultraviolet lamp. The inlet and outlet ends of the spiral air duct are prefabricated into vertical short tubes. Threads can be prefabricated on the outer wall of the short tubes, or they can be smooth. The opening of the short tube at the outlet end faces upward, directly facing the above-mentioned central space. After the air flow output from this short tube impacts the top of the ultraviolet lamp upward, it diverges in all directions. The function of the spiral air duct is to extend the time that the air flow from the negative pressure source is irradiated by the ultraviolet lamp. The gas is irradiated both inside and outside the tube here, and the time that the virus is irradiated is longer than the time it is killed by ultraviolet rays.

[0049] The above-mentioned small self-ballasted ultraviolet lamp is in the shape of a short cylinder and is powered by direct current. Its volume is slightly smaller than the space in the center of the above-mentioned spiral air duct. The ultraviolet rays it generates are mainly short-wave ultraviolet rays, which are used to kill pathogenic microorganisms.

[0050] The above-mentioned microbial filter sleeve is similar in shape to the "Uncle Sam" style hat in the United States and is made of a filter material with high filtration efficiency. Depending on the size of the pathogenic microorganisms to be filtered, the types and quantities of the filter materials selected are also different. When in use, this filter sleeve is put on upward to cover the spiral air duct and the self-ballasted ultraviolet lamp in the center thereof.

[0051] The above-mentioned chemical disinfection and filtration layer is composed of multiple layers of filtering materials. Commonly used filtering materials include high-efficiency filter cotton, medium-efficiency filter cotton, meltblown cloth, multi-layer cotton gauze, sponge, and activated carbon. Among them, some materials need to be impregnated with disinfectant (such as multi-layer cotton gauze or sponge). Depending on the different pathogenic microorganisms to be dealt with, one or more of the above-mentioned filter materials and disinfectants with targeted disinfection effects are selected and stacked together to form a composite disinfection and filtration layer. The completed disinfection and filtration layer is installed in the inner cavity at the bottom of the following disinfector housing.

[0052] There are several ribs along the same direction as the long axis of the cylinder on the inner wall of the tube in the middle part of the above-mentioned disinfector housing. The depressions between the ribs are air guide grooves. The gas coming out of the microbial filter sleeve mainly flows downward in this groove; the space in this part is used to place the above-mentioned microbial filter sleeve and the components inside it; the lower part bulges outward, and the above-mentioned composite disinfection and filtration layer will be installed in the inner cavity here.

[0053] Advantages of the present invention: (1) The soft edge of the multi-channel and multi-functional face mask of the present invention is made of a soft material (such as food-grade soft silicone) with very little skin irritation. Even after continuous use for a long time, facial skin pressure sores will not occur. The air inlet holes and the spare air outlet holes on the face mask cover of the present invention can be interchanged in position, and the experimental measurement holes, the fresh air input holes, and the oxygen supply holes have the same aperture, and there is no need for strict distinction in function. The present invention is provided with a spare air outlet one-way valve. When the exhaled air volume of the user is too large once or several times and the airbag cannot accommodate the excess gas, the exhaled air of the user can be discharged through the spare air outlet one-way valve, and the user will not feel difficult to exhale.

[0054] (2) There is a hole or a fixing column in the center of the one-way valve diaphragm inside the protective face mask on the current market, which is used to fix the diaphragm on the valve seat, and the central part of the diaphragm does not move during operation. The peripheral part of the diaphragm is lifted by the airflow - opened. The opening pressure and ventilation area of this kind of one-way valve depend on the material, thickness, and diameter of the diaphragm. The opening pressure is mostly determined by the thickness. To have a low opening pressure, the diaphragm has to be made very thin. After being used for a period of time, a very thin diaphragm is prone to deformation and difficult to fit and reset tightly. The closed body of the pumpkin-shaped one-way valve designed by the present invention is also a diaphragm, but in terms of adjusting the opening pressure control parameters and maintaining the tightness of the diaphragm, it is far more flexible and diverse than the current diaphragm one-way valve.

[0055] (3) A buffer and flow guide device is prefabricated at one end of the oxygen input short tube and the fresh air input short tube of the present invention. The buffer and flow guide device is used to buffer the oxygen and fresh air with a large flow rate input into the face mask, so as to avoid directly impacting the facial skin of the user and causing discomfort.

[0056] (4) There are two types of power sources used in the present invention: alternating current (mains power) and battery. The negative pressure source machine, the positive pressure source machine, the differential pressure sensor kit, and the ultraviolet lamp adopted by the present invention all need direct current to provide power. Since the main users of the present invention are patients with respiratory diseases and the vast majority of the use environments are hospital ward beds, the user's activity range is very small. Therefore, accessing alternating current (mains power) is the most economical, and the inventor configures an AC-DC conversion module. In addition, considering the convenience of use, a battery is also configured for the present invention to continue running when the user leaves the hospital bed for a short time.

[0057] (5) The negative pressure source of the present invention is provided with a negative pressure source gas flow rate adjustment device, which can accurately adjust the amount of gas inhaled by the negative pressure source.

[0058] (6) The present invention is provided with a negative ion generator module, which can provide air rich in negative ions for patients, significantly improve the air quality inhaled by patients, and promote their physical and mental health. At the same time, the present invention is also provided with a medicament atomizer, which can deliver the liquid medicine on the medicament core to the respiratory tract of patients in the form of extremely fine particles to obtain a therapeutic effect. As long as the user adds liquid medicine to the medicament core or replaces the entire medicament core as needed, continuous inhalation treatment can be maintained.

[0059] (7) The positive pressure source of the present invention is provided with a flow dividing valve, which can adjust the air flow pressure and flow rate in the entire positive pressure pipeline.

[0060] (8) The setting of the spiral air flow tube of the present invention and the sudden slowdown of the flow velocity of the air after it leaves this tube enable the viruses in the exhaled gas of patients to be irradiated for a longer time than the time required for them to be inactivated by ultraviolet rays.

[0061] (9) The present invention is also provided with a microbial filter sleeve and a chemical disinfection and sterilization filter layer to ensure that microorganisms are blocked and eliminated to the greatest extent.

[0062] In summary, the present invention uses the negative pressure generated by the negative pressure source to extract the waste gas exhaled by patients. After harmless treatment through the blocking and disinfection device, it is then discharged into the atmosphere, significantly reducing the harmful microorganism load in the living environment of patients, thereby reducing the infection risk of relevant personnel working in this environment. At the same time, the present invention can also provide fresh air and medicated air for patients, providing good treatment conditions for patients.

[0063] The inventor points out that the micro air pump or micro turbine blower, small self-ballasted ultraviolet lamp, negative ion generator module, alternating current to direct current module, differential pressure sensor kit, pressure relief valve, air storage bag, circuit type air flow regulating device, gas path type air flow regulating device, and battery used in the negative pressure source and positive pressure source of the present invention are all mature technologies, which can be purchased on the market or customized according to the requirements of the producer. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 is a front view schematic diagram of the multi-channel multifunctional mask of the present invention;

[0065] Figure 2 is a rear view schematic diagram of the multi-channel multifunctional mask of the present invention;

[0066] Figure 3 is a schematic diagram of the buffer flow deflector - oxygen input short tube of the present invention Figure 1 ;

[0067] Figure 4 is a schematic diagram of the buffer flow deflector - oxygen input short tube of the present invention Figure 2 ;

[0068] Figure 5Schematic diagram of the bottom of the pumpkin-shaped one-way valve diaphragm box of the present invention;

[0069] Figure 6 Schematic diagram of the diaphragm and elastomer of the pumpkin-shaped one-way valve of the present invention prefabricated as one body;

[0070] Figure 7 Schematic diagram of the elastomer bottom of the pumpkin-shaped one-way valve of the present invention having a small ring;

[0071] Figure 8 Top view schematic of the air extraction one-way straight-through of the present invention Figure 1 ;

[0072] Figure 9 Top view schematic of the air extraction one-way straight-through of the present invention Figure 2 ;

[0073] Figure 10 Bottom view schematic of the air extraction one-way straight-through of the present invention;

[0074] Figure 11 Longitudinal section schematic of the flavor device of the present invention;

[0075] Figure 12 Schematic of the flavor device core of the present invention;

[0076] Figure 13 Cross-oblique section schematic of the flavor device of the present invention;

[0077] Figure 14 Top view schematic of the lamp socket board of the present invention;

[0078] Figure 15 Bottom view schematic of the lamp socket board of the present invention;

[0079] Figure 16 Schematic of the spiral air flow pipe of the present invention;

[0080] Figure 17 Schematic of the microbial filter sleeve of the present invention;

[0081] Figure 18 Top view schematic of the disinfection device housing of the present invention;

[0082] Figure 19 Bottom view schematic of the disinfection device housing of the present invention;

[0083] Figure 20 Schematic of the chassis of the present invention.

[0084] In the figure: a01 - mask cover; a02 - air inlet hole; a03 - air inlet valve seat; a04 - spare air outlet hole; a05 - spare air outlet valve seat; a06 - experimental measurement short tube; a07 - oxygen input short tube; a08 - buffer flow deflector; a09 - fresh air input hole; a10 - fresh air input short tube; a11 - air outlet pipe seat; a12 - air outlet pipe; a13 - experimental measurement hole; a14 - air outlet hole; a15 - flow deflector; a16 - air hole; a17 - support rib; a18 - bottom of diaphragm box; a19 - one - way valve diaphragm seat; a20 - diaphragm slider; a21 - central axis; a22 - one - way valve diaphragm; a23 - diaphragm slider support; a24 - elastomer; a25 - small round piece at the top of elastic reset device; a26 - small circular ring at the bottom of elastic reset device; a27 - air extraction one - way straight - through; a28 - union; a29 - enclosure; a30 - air extraction pipe; a31 - reverse duck - bill one - way valve; a31 - 1 - upper part of reverse duck - bill one - way valve; a32 - reverse duck - bill one - way valve seat; a33 - medicament flavor device housing; a34 - air flow input short tube; a35 - outer tube of medicament flavor device core; a36 - medicament flavor device core; a37 - space between medicament flavor device housing and medicament flavor device core; a38 - inner tube of medicament flavor device core; a39 - air flow output short tube; b01 - lamp socket plate; b02 - lamp head seat; b03 - power cord hole; b04 - air inlet short tube hole; b05 - lamp socket plate fixing hole; b06 - fixing ring for spiral air flow tube; b07 - air inlet short tube of spiral air flow tube; b08 - fixing hole for microbial filter sleeve; b09 - disinfection device shell rib; b10 - air guide groove; b11 - bottom inner cavity; c01 - chassis air inlet short tube; c02 - chassis air outlet short tube; c03 - display area; c04 - switch knob area; c05 - cover; c06 - battery; c07 - handle. Detailed implementation mode

[0085] The present invention will be further described below with reference to the accompanying drawings:

[0086] The present invention consists of the following parts: multi - channel multi - function mask, multi - function mask accessory, air extraction one - way straight - through, air storage bag, negative pressure source and negative pressure air flow regulating device, positive pressure source and positive pressure air flow regulating device, pressure relief valve, pressure sensor kit, negative ion generator module, medicament flavor device, battery, AC - to - DC module, microbial interception component, control circuit board, chassis.

[0087] The appearance of the above multi-channel and multi-functional face mask is similar to that of an anesthesia face mask. It consists of a face mask cover and a soft edge. The soft edge is made of a soft material with very little skin irritation (such as food-grade soft silicone), and the face mask cover is made of very thin transparent acrylic material. There are a total of 8 holes in four groups with different sizes prefabricated on the cover: 2 air inlet holes a02 on both sides of the upper part of the face mask cover. These air inlet holes extend outward to form air inlet valve seats a03 for installing air inlet one-way valves. 2 spare air outlet holes a04 on both sides of the lower part of the face mask cover, which extend outward to form spare air outlet valve seats a05 for installing spare air outlet one-way valves. 1 air outlet hole a14 directly below the face mask cover, which extends outward to form an air outlet pipe seat a11 and a threaded air outlet pipe a12 for connecting with the following air extraction one-way straight-through a27. The diameters of the above 2 air inlet holes a02 and 2 spare air outlet holes a04 are relatively large, both 10 mm or above. The shapes and diameters of the above 4 one-way valve seats are the same and can be interchanged. That is to say, the air inlet holes can be in the upper half or the lower half of the face mask cover, and can be freely set according to the user's preference. Conversely, the same is true for the spare air outlet holes. Usually, the two holes above the face mask cover are used for air inlet. In the central part of the face mask cover, that is, between the above 4 air inlet holes and spare air outlet holes, there are 3 small-diameter round holes arranged longitudinally, which are named experimental measurement hole a13, fresh air input hole a09, and upper oxygen hole respectively. Because the distances between these 3 holes are very close and the hole diameters are the same, they do not need to be strictly distinguished in function.

[0088] The inner diameters of the above air outlet hole and the air outlet pipe are the same, both must be greater than or equal to 16 mm so that the user can exhale smoothly (the normal diameter of an ordinary person's trachea is about 20 mm).

[0089] The above multi-functional face mask accessories include: air inlet one-way valve, spare air outlet one-way valve, air outlet filter, oxygen input short pipe a07, fresh air input short pipe a10, experimental measurement short pipe a06, and buffer flow deflector a08.

[0090] The above air inlet one-way valve and spare air outlet one-way valve have the same structure but different opening pressures, and the latter is greater than the former. They are respectively installed on the air inlet valve seat a03 and the spare air outlet valve seat a05. A filter seat is prefabricated on the outside of the spare air outlet one-way valve for installing the air outlet filter, and the two are collectively called the air outlet filter one-way valve.

[0091] There are various types of the above filter seat and filter, which match each other. In this embodiment, the filter is circular in shape, and the filter material inside the filter can be a single type or a composite filter material formed by overlapping several materials. The filter material in this embodiment is the filter material (meltblown cloth) for making N95 masks.

[0092] The opening pressure of the spare air outlet one-way valve must also be greater than the opening pressure of the air outlet one-way valve inside the following air extraction one-way straight-through.

[0093] The above-mentioned standby exhalation one-way valve generally does not function. Only when the user exhales a large amount of air once or several times and the airbag cannot accommodate the excess gas, the user's exhaled air can be discharged through the standby exhalation one-way valve. The user will not feel difficulty in exhaling.

[0094] Both the above-mentioned intake one-way valve and the standby exhalation one-way valve adopt the unique pumpkin-shaped one-way valve of the present invention.

[0095] The above-mentioned pumpkin-shaped one-way valve has a flat-round appearance. The biggest difference from the common round diaphragm one-way valve in the current market lies in the shape and movement mode of the diaphragm. In the current market, there are holes or fixed columns in the center of the one-way valve diaphragm in the protective face mask, which are used to fix the diaphragm on the valve seat, and the central part of the diaphragm does not move during operation. The peripheral part of the diaphragm is lifted by the airflow - opened. The opening pressure and ventilation area of this kind of one-way valve depend on the material, thickness and diameter of the diaphragm. The opening pressure is mostly determined by the thickness. To have a low opening pressure, the diaphragm has to be made very thin. After being used for a period of time, a very thin diaphragm is prone to deformation and difficult to fit and reset tightly. The closed body of the pumpkin-shaped one-way valve is also a diaphragm, but it is far more flexible and diverse than the current diaphragm one-way valve in terms of adjusting the opening pressure control parameters and maintaining the tightness of the diaphragm.

[0096] The above-mentioned pumpkin-shaped one-way valve is composed of a diaphragm box, a one-way valve diaphragm a22, a diaphragm slider a20, a central shaft a21, and an elastic reset device. The material and shape of the above-mentioned one-way valve diaphragm are similar to those of the commercially available ready-made diaphragm mentioned above. There is also a hole in the center, but this hole is not used to fix the diaphragm, but for an embedded connection with the diaphragm slider a20; the diaphragm slider is made of hard plastic, with an inverted T-shaped cross-section. The lower part is a very thin circular sheet, called the diaphragm slider support a23, which is used to support the one-way valve diaphragm a22. The center of the diaphragm slider a20 is in the shape of a short tube. The outer diameter of this short tube is slightly larger than the small hole in the center of the one-way valve diaphragm a22. After the small hole in the center of the one-way valve diaphragm a22 is sleeved into the above-mentioned short tube, it will not slip off. The inner diameter of the short tube is slightly larger than the outer diameter of the above-mentioned central shaft a21, and the diaphragm slider a20 can slide smoothly along the central shaft a21; the elastic reset device is made of the same material as the one-way valve diaphragm a22, and its shape is similar to a pumpkin, so it is named after a pumpkin. The top of the elastic reset device is a small round piece a25 at the top of the elastic reset device, with a small hole in the center, and its diameter is slightly smaller than the central shaft a21. The bottom is usually prefabricated into a small ring a26 at the bottom of the elastic reset device. Between the top a25 and the bottom a26, there are several strip-shaped elastic bodies a24. When the small round piece a25 at the top of the elastic reset device and the small ring a26 at the bottom of the elastic reset device approach each other under external pressure, the elastic body a24 bulges outwards, forming a shape similar to a pumpkin. The bottom structure of the elastic body a24 has three forms: the small ring a26 at the bottom of the elastic reset device and the one-way valve diaphragm a22 are prefabricated into one body; they can also be separated from each other and only in contact, not integrated; the small ring a26 at the bottom of the elastic reset device can also be not used, and the lower end of the elastic body a24 is prefabricated into one body with the one-way valve diaphragm a22. These three structures have their own advantages and disadvantages in terms of cost, performance, and flexibility; the above-mentioned diaphragm box is made of hard plastic and is used to accommodate the completely assembled one-way valve diaphragm - diaphragm slider and elastic reset device. It is in the shape of a hollow flat circle and is composed of two parts: the top and the bottom a18. The bottom a18 has a shallow groove conforming to the one-way valve diaphragm a22. There is another small shallow groove in the central area of the bottom a18. The two grooves are connected by ribs. The central groove conforms to the bottom of the diaphragm slider a20 and has a small hole in the center, and its diameter is slightly smaller than the central shaft a21. The top of the diaphragm box is in the shape of a round sheet. The top and the bottom a18 are connected by relatively wide ribs. There is also a small hole with a diameter smaller than the central shaft a21 in the center of the top; the central shaft a21 is a thin equal-diameter hollow metal tube, similar to the body of an injection needle without a joint. The outer diameter is slightly smaller than the inner diameter of the short tube of the diaphragm slider a20 and slightly larger than the small holes in the centers of both ends of the diaphragm box.

[0097] Assembly of the above-mentioned pumpkin-shaped one-way valve: The central shaft a21 is sequentially passed through the small hole at the center of the groove in the central area at the bottom of the diaphragm box a18, the short tube of the diaphragm slider a20 - the small circular ring a26 at the bottom of the elastic reset device, the small central hole of the small circular plate a25 at the top of the elastic reset device, and the small central hole at the top of the diaphragm box. The diaphragm slider support a23 closely adheres to the one-way valve diaphragm a22 from the bottom surface, and the one-way valve diaphragm a22 is integrally placed in the groove of the one-way valve diaphragm seat a19. After assembly, the small circular plate a25 at the top of the elastic reset device contacts the top of the diaphragm box and is restricted in movement; the central shaft a21 is fixed by the small holes at the top and bottom of the diaphragm box and cannot move. The elastic body a24 of the assembled one-way valve protrudes outward in a pumpkin shape, and the diaphragm slider a20 can move smoothly along the central shaft a21, thereby driving the one-way valve diaphragm a22 to move, and the one-way valve will open and close accordingly.

[0098] Working principle of the above-mentioned one-way valve: When the air flow presses the one-way valve diaphragm a22 from the bottom of the diaphragm box, the one-way valve opens, and there are three forms of opening according to the pressure situation of the diaphragm - the edge of the diaphragm is lifted, the whole diaphragm moves upward along the central shaft, or both forms exist.

[0099] Features of the above-mentioned pumpkin-shaped one-way valve: The opening pressure can be preset with high precision and has high reliability for long-term use. In addition to the same preset parameters as the existing diaphragm one-way valve, there are several other adjustable preset parameters for the pumpkin-shaped one-way valve: the number, diameter, material, outward convexity of the elastic body a24, and the diameter of the small circular ring a26 at the bottom of the elastic reset device. The change of each parameter can change the opening pressure of the one-way valve. When a large flow of gas passes through the existing one-way valve, the elastic diaphragm will greatly deform to increase the air flow passage space. Over time, the sealing performance of the one-way valve will decrease. When a large flow of gas passes through the pumpkin-shaped one-way valve, in addition to a certain degree of elastic deformation of the diaphragm, mainly the overall lifting and displacement of the diaphragm are used to expand the air flow passage space. The deformation amplitude of the diaphragm is very small, and coupled with the large pressure application area of the elastic reset device on the diaphragm, it is not easy for the diaphragm to deform. Therefore, the features of the pumpkin-shaped one-way valve are low opening pressure, high fluidity, and high reliability.

[0100] The above-mentioned elastic reset device can also be replaced by an extremely thin compression spring, preferably a pagoda-shaped compression spring.

[0101] The outer tube walls of the above-mentioned oxygen input short tube a07, fresh air input short tube a10, and experimental measurement short tube a06 are prefabricated with threads and are respectively inserted into the oxygen supply hole, fresh air input hole a09, and experimental measurement hole a13 from the inside of the mask cover. Since the distances between these three holes are very close and the hole diameters are the same, there is no need for strict distinction in function. After insertion, they are fixed with nuts on the outside of the mask cover. The oxygen input short tube a07 and the fresh air input short tube a10 are respectively connected to hoses for inputting gases corresponding to their names, and the corresponding functions can be performed. The experimental measurement short tube a06 is used to measure the pressure inside the above-mentioned mask or the air components inside the mask. For ordinary users, the experimental measurement short tube a06 is useless and can be sealed.

[0102] One end of the above-mentioned oxygen input short tube a07 and fresh air input short tube a10 is prefabricated with a buffer flow deflector a08. The buffer flow deflector a08 is used to buffer the relatively large flow of oxygen and fresh air input into the mask, preventing these two gases from directly impacting the facial skin of the user and causing discomfort. The material of the buffer flow deflector a08 is the same as that of the above two short tubes and is composed of a flow deflector a15 and support ribs a17. The surface of the flow deflector a15 is slightly concave and conforms to the inner surface of the above-mentioned mask cover. The support ribs a17 are used to connect the flow deflector a15 and the inner opening of the above-mentioned short tube. Many small holes called air holes a16 are prefabricated on the flow deflector a15. When the input gas impacts the flow deflector a15, a part of it will be broken into small streams and come out from the air holes a16, and the other part of the air flow passes through between the support ribs a17 and spreads out along the inside of the mask cover, and the pressure of the air flow is thus buffered.

[0103] The above-mentioned oxygen input short tube a07, fresh air input short tube a10, and experimental measurement short tube a06 can also be prefabricated integrally with the oxygen supply hole, fresh air input hole a09, and experimental measurement hole a13 respectively. This manufacturing method reduces the cost, but also reduces the flexibility of the air flow configuration.

[0104] The main body of the above-mentioned one-way air extraction straight a27 is usually in the shape of a circular tube, and an air outlet one-way valve is pre-installed in the upper part of the tube cavity. This embodiment chooses to use the reverse duckbill one-way valve a31 recorded in another patent 201510120553.5 of the inventor. This one-way valve is installed on the reverse duckbill one-way valve seat a32 and can be quickly replaced. The reverse duckbill one-way valve seat a32 is located in the center of the above-mentioned circular tube, and can also be installed on one side of the circular tube. The top of the one-way valve is funnel-shaped and extends to the surroundings to form a thin plate, which is integrated with the inner cavity of the above-mentioned circular tube, called the closed body a29. This thin plate closes the circular tube cavity except for the one-way valve inlet, forcing the gas from the outlet pipe a12 to flow downward only through the one-way valve and cannot flow back. A short horizontal tube is prefabricated at the upper position of the circular tube, called the air extraction pipe a30, and its inner diameter is the same as or slightly larger than the air inlet pipe of the negative pressure source. If the one-way valve is arranged in the center of the circular tube, there is no requirement for the prefabrication position of the exhaust pipe a30. If the one-way valve is arranged on one side of the circular tube, the exhaust pipe a30 must be prefabricated at its opposite position. The upper end surface of the circular tube extends to the surroundings in a platform shape, and the diameter of the platform is the same as the outer diameter of the exhaust pipe a12 on the mask cover. Between the platform and the exhaust pipe a30, a flexible joint a28 is prefabricated to connect the exhaust one-way straight-through a27 with the exhaust pipe a12 on the mask cover. The connection surface has a soft rubber ring for sealing.

[0105] The air storage bag is a plastic, latex or silicone product with a very thin wall. The appearance can be a three-dimensional shape, similar to a medical anesthesia air bag, or a flat shape, similar to a simple respirator air storage bag for emergency use. The inner diameter of the air inlet of the air storage bag is the same as the lower end of the one-way straight through a27 for exhaust. When in use, the air inlet of the air storage bag is sleeved on the lower end of the one-way straight through a27 for exhaust to store the waste gas exhaled by the user.

[0106] The above-mentioned negative pressure source uses a micro air pump or a micro turbine fan, whose air inlet end is connected to the chassis air inlet short pipe c01 on the chassis surface inside the chassis. The chassis air inlet short pipe c01 is connected to the exhaust pipe a30 of the one-way exhaust straight through a27 through a hose to extract the gas in the air storage bag.

[0107] The above-mentioned negative pressure source gas flow regulating device is divided into two types according to the different regulating methods and principles: circuit type regulating device and gas path type regulating device. The circuit type regulating device controls the working condition of the machine by adjusting the voltage or frequency conversion supplied to the micro gas source, thereby adjusting the amount of gas inhaled by the negative pressure source. This regulating method is commonly used in the oxygen supply device of the aquarium; the gas path type regulating device adjusts the diverter valve preset in the inhalation gas path to change the negative pressure value in the gas path, thereby adjusting the amount of gas inhaled by the negative pressure source. This airflow regulating method is widely used in medical aspirators. These two airflow regulating methods have their own advantages and disadvantages, and can be used alone or in combination to more accurately regulate the amount of gas inhaled by the negative pressure source.

[0108] The above positive pressure source uses a micro air pump or a micro turbine blower, with a power smaller than that of the same-named machine used by the aforementioned negative pressure source. Its air outlet end is connected to the fresh air input short pipe a10 on the mask cover through a hose, and is used to provide fresh air for the user. This fresh air, relative to the air inhaled by the user himself, has been filtered and contains a large amount of negative ions.

[0109] The above positive pressure air flow regulating device is divided into two types according to different regulation methods and principles: a circuit type regulating device and a pneumatic type regulating device, and its principle and components are the same as those of the air flow regulating device of the above negative pressure source.

[0110] The above negative ion generator module is miniature and low-power, and its negative ion generating electrode is installed in the air path at the far end of the exhaust pipe of the above positive pressure source. The air path is airtight, and the air output by the positive pressure source machine is mixed with the negative ions generated by the electrode to form mixed air, which is transported into the mask through a hose connected to the fresh air input short pipe a10 on the mask cover.

[0111] The above positive pressure pipeline originates from the air outlet end of the positive pressure source machine and is divided into two branches according to functions, air flow rates, and pipeline internal resistances: the main pipeline and the branch pipeline.

[0112] The air flow output end of the above positive pressure source is connected to the main end of an air exhaust. This air exhaust has three branch flows. After the other main end of the air exhaust is connected to a flow dividing valve and then to a three-way pipe, one end of the three-way pipe is directly connected to the chassis air output short pipe c02 on the chassis surface, and the other end is connected to the air flow output short pipe a39 of the flavorer. Although the above flow dividing valve is installed on the main pipeline, it can regulate the air flow pressure and flow rate in the entire positive pressure pipeline. When the pressure relief and flow dividing function is closed, all the gases output by the positive pressure source machine are sent to the patient for use. When the pressure relief and flow dividing function is opened, part of the gases output by the positive pressure source machine will be discharged into the chassis, and the amount of gases supplied to the patient will decrease. Usually, the pressure relief function of the flow dividing valve is closed, and the patient can obtain all the gases output by the positive pressure source.

[0113] One branch pipeline of the air exhaust is connected to a pressure relief valve. When the pressure in the positive pressure pipeline reaches the preset value, the pressure relief valve opens to protect the positive pressure source machine; the second branch pipeline is connected to the measurement end of a pressure sensor; the third branch pipeline is connected to a micro ball valve. The air flow output end of the micro ball valve is connected to the air flow input short pipe a34 of the flavorer. The air flow output short pipe a39 of the flavorer is connected to the three-way pipe connected to the main pipeline through a hose, and the branch gas returns to the main pipeline. The above micro ball valve adjusts the gas volume passing through the branch air path by adjusting the channel area of the valve core.

[0114] The above-mentioned differential pressure sensor kit includes a differential pressure sensor, a micro-speaker, and a warning light on the surface of the chassis, which is also one of the safety protection measures of the present invention. The sensor measuring end is installed in the above-mentioned positive pressure gas circuit, and the signal output end is connected to the micro-speaker through the control circuit board. When the pressure in the positive pressure gas circuit increases, it will trigger the voltage of the sensor signal output end to change synchronously. When the working voltage of the micro-speaker is reached, the speaker will sound an alarm and the warning light will light up to remind the user. In order to reduce product costs, a differential pressure switch can also be used instead of a differential pressure sensor.

[0115] The above-mentioned medicine flavor device is an odor dispersing device pre-installed on the above-mentioned branch pipeline, and is made of plastic, acrylic or glass. The outer shape is cylindrical or rectangular, with airflow input short tube a34 and airflow output short tube a39 at both ends, which are respectively connected to the corresponding parts of the branch pipeline. The main body of the medicine flavor device is two tubular structures that are integrated into one, respectively called the medicine flavor device shell a33 and the medicine flavor device core a36. The space between the two tubes is hollow, called the medicine flavor device shell and the medicine flavor device core space a37. The two are connected by snaps or threads, and are sealed with a soft material sealing ring. The medicine flavor device core a36 is also two overlapping tubular structures, respectively called the medicine flavor device core outer tube a35 and the medicine flavor device core inner tube a38. The space between the two tubes is hollow, and the two ends are closed with a common wall. A plurality of long strip-shaped air permeable grooves are prefabricated on the walls of the two-layer tubular structure. The space between the two tubular structures of the medicine flavor device core is pre-set with a medicine core made of a highly absorbent breathable material (such as a sponge) for absorbing liquid with medicinal properties or medicinal flavors. The airflow input short tube a34 is pre-formed at the center of the top of the medicine flavor device shell a33, and the airflow output short tube a39 is pre-formed at the center of the top of the medicine flavor device core a36, and is in equal diameter communication with the inner cavity a38 of the tubular structure inside the medicine flavor device core a36. The gas from the airflow input short tube a34 cannot directly reach the airflow output short tube a39, and must pass through the air permeable groove and medicine core of the medicine flavor device core a36 to reach the airflow output short tube a39. The gas flows in this way, and the liquid medicine on the medicine core is delivered to the patient's respiratory tract in the form of extremely fine particles to obtain a therapeutic effect. The user only needs to add liquid medicine to the medicine core or replace the entire medicine flavor device core a36 as needed to maintain continuous inhalation treatment.

[0116] There are two types of power sources used in the present invention: alternating current (mains power) and battery.

[0117] The above-mentioned negative pressure source machine, positive pressure source machine, differential pressure sensor kit, and the ultraviolet lamp described below all require direct current to provide power. Since the main users of the present invention are patients with respiratory diseases, most of the use environments are on the beds in hospital wards, and the user's range of activities is very small, therefore, it is most economical to connect to alternating current (mains electricity), and an AC to DC conversion module needs to be configured. A battery is also required so that the present invention can continue to operate when the user leaves the bed for a short time. For example, when the user goes to the toilet.

[0118] The above-mentioned microorganism interception component is composed of the following parts: an ultraviolet disinfection component, a microorganism filter sleeve, a chemical disinfection filter layer, and a disinfection device shell. The first two components are installed in the latter.

[0119] The above-mentioned ultraviolet disinfection component consists of the following three parts: a small self-ballasted ultraviolet lamp, a spiral air flow tube, and a lamp socket plate b01.

[0120] The above-mentioned lamp socket plate b01 is made of plastic and is in the shape of a straw hat, with upper and lower surfaces. The middle part of the upper surface is circularly convex, called the lamp head socket b02. Its inner cavity is a blind tube for installing the lamp head of the above-mentioned self-ballasted ultraviolet lamp. There are two small holes at the top, called the power cord holes b03. There are several small holes around the lamp socket plate, called the lamp socket plate fixing holes b05, for connecting and fixing with the above-mentioned disinfection device shell and microorganism filter sleeve. Near the central convexity, there is a round hole, called the short air inlet tube hole b04. The short air inlet tube b07 of the above-mentioned spiral air flow tube passes through the short air inlet tube hole b04 from below. On the lower surface of the lamp socket plate b01, there is a short tubular ring around the short air inlet tube hole b04, called the spiral air flow tube fixing ring b06. Its inner diameter is the same as the outer diameter of the spiral air flow tube, and it can tightly bind the spiral air flow tube. After the spiral air flow tube is installed in the above-mentioned way, it will not move.

[0121] The above-mentioned spiral air flow tube is made of a transparent material with high ultraviolet transmittance. Quartz glass is preferred, with an ultraviolet transmittance of more than 90%. Special acrylic is the second choice, with an ultraviolet transmittance of more than 73%. As the name indicates, its shape is spiral, with a very small pitch, and the upper and lower tubes are almost close to each other. The center of the whole spiral tube is hollow, and its space is slightly larger than the volume of the self-ballasted ultraviolet lamp. The ultraviolet lamp can be installed in this space. The air inlet end of the spiral air flow tube is prefabricated into a vertical short tube shape, called the short air inlet tube of the spiral air flow tube b07. The outer wall of the short tube can be prefabricated with threads or can be smooth. The air outlet end of the spiral air flow tube is also prefabricated into a vertical short tube shape, and the opening of the short tube faces upward, directly facing the above-mentioned central space. The air flow output from this short tube flows upward, impacts the top of the ultraviolet lamp, and then diverges in all directions. The role of the spiral air flow tube is to extend the time that the air flow from the negative pressure source is irradiated by the ultraviolet lamp. The gas is irradiated both inside and outside the tube here, and the time that the virus is irradiated is longer than the time it is inactivated by ultraviolet rays.

[0122] The above-mentioned small self-ballasted ultraviolet lamp is in the shape of a short cylinder and is powered by direct current. Its volume is slightly smaller than the space in the center of the above-mentioned spiral air flow tube. The ultraviolet rays generated are mainly short-wave ultraviolet rays, which are used to kill pathogenic microorganisms.

[0123] The above-mentioned microbial filter sleeve is similar in shape to the "Uncle Sam" hat in the United States. There are several small holes on the edge of the "hat" that are the same in position and quantity as the small holes on the lamp socket board, which are called the microbial filter sleeve fixing holes b08 and are used to fit and fix with the lamp socket board b01. This filter sleeve is made of filter materials with high filtration efficiency. Depending on the size of the pathogenic microorganisms to be filtered, the types and quantities of filter materials selected are also different. Commonly used filter materials are the melt-blown cloth for making N95 masks or N99 masks, and filter materials for making HEPA can also be selected. A hydrophobic layer made of the same material as the inner layer of the N95 mask is covered on the inner surface of the filter material, and a protective layer made of the same material as the outer layer of the N95 mask is covered on the outer surface. When in use, this filter sleeve is put on upwards to cover the spiral air flow tube and the self-ballasted ultraviolet lamp in the middle.

[0124] The above-mentioned chemical disinfection and filtration layer is the last line of defense of the microbial interception component of the present invention and is composed of multiple layers of filtering materials. Commonly used filtering materials include high-efficiency filter cotton, medium-efficiency filter cotton, melt-blown cloth, multi-layer cotton gauze, sponge, and activated carbon. Among them, some materials need to be impregnated with disinfectant (such as multi-layer cotton gauze or sponge). Depending on the different pathogenic microorganisms to be dealt with, one or more of the above-mentioned filter materials and disinfectants with targeted disinfection effects are selected and laminated together to form a composite disinfection and filtration layer. The completed disinfection and filtration layer is installed in the bottom inner cavity b11 of the following disinfector shell.

[0125] The above-mentioned disinfector shell is made of plastic and is cylindrical. The top is a disc with vertical edges and has several small holes matching the fixing holes b05 of the lamp socket board for connecting with the lamp socket board; there are several disinfector shell ribs b09 on the inner wall of the tube in the middle part in the same direction as the long axis of the cylinder. The depressions between the ribs are the air guide grooves b10, and the gas coming out of the microbial filter sleeve mainly flows downward in this groove; the space in the middle part is used to place the above-mentioned microbial filter sleeve and the components inside; the lower part bulges outwards, and the above-mentioned composite disinfection and filtration layer will be installed in the inner cavity b11 here.

[0126] The above-mentioned AC-DC conversion module, circuit type air flow regulating device, differential pressure sensor kit, and negative ion generator module are all integrated and prefabricated on a control circuit board.

[0127] The above-mentioned negative pressure source machine, positive pressure source machine, control circuit board, positive pressure gas path shunt valve, and negative pressure air flow shunt valve are all installed in a sealed box, which is called the chassis. The surface of the chassis is divided into three areas: the pipeline area, the display area c03, and the switch knob area c04. The pipeline area is prefabricated with a chassis intake short pipe c01 and a chassis exhaust short pipe c02; the switch knob area c04 is pre-installed with a positive pressure source start and power adjustment knob, a negative pressure source start and function adjustment knob, a positive pressure source shunt valve adjustment knob, a negative pressure source shunt valve adjustment knob, a medicine smell device air flow adjustment knob, a negative ion generator power switch, and an in-machine power - battery power supply conversion switch; the display area c03 is pre-installed with an AC power indicator light, a positive pressure source working indicator light, a negative pressure source working indicator light, an ultraviolet lamp working indicator light, a negative ion generator working indicator light, and a positive pressure gas path high pressure alarm light; the bottom of the chassis is also divided into three areas: the heat dissipation area is prefabricated with several heat dissipation holes; a medicine smell device groove for installing the medicine smell device, and the intake and exhaust short pipes at both ends of the medicine smell device can be quickly docked with the quick connectors in this groove; the remaining area is the filter area for installing the filter used by the positive pressure source. If the present invention is used for patients with viral infections, the filter material here needs to be a material that can filter viruses, such as the filter material for manufacturing N95 masks. A microbial interception component mounting seat is prefabricated on the left side of the chassis for installing the microbial interception component. Since all the interception components are installed inside the disinfection device shell, this mounting seat conforms to the disinfection device shell and can fix the disinfection device shell. Above this mounting seat, an air flow interface and a power interface are prefabricated. The air flow interface is connected to the air outlet end of the negative pressure source inside the chassis and to the intake short pipe b07 of the spiral air flow pipe outside the chassis. Around the disinfection device shell, a cover c05 that conforms to the chassis main body, has the same material as the chassis main body, and can be quickly removed is installed to make the whole machine look beautiful and coordinated; a battery c06 that can be quickly disassembled and assembled is installed on the right side of the chassis. A handle c07 is prefabricated on the top of the chassis to facilitate the movement of the present invention with the user.

[0128] The micro air pump or micro turbine fan, small self-ballasted ultraviolet lamp, negative ion generator module, AC - DC conversion module, differential pressure sensor kit, pressure relief valve, air storage bag, circuit - type air flow regulating device, air path - type air flow regulating device, and battery used by the above-mentioned negative pressure source and positive pressure source are all mature technologies, which can be bought in the market or customized according to the requirements of the producer.

[0129] The upper part of the multi-channel multifunctional mask is preset as an air inlet a02 and an air inlet valve seat a03, and an air inlet check valve is installed; the lower part is preset as a spare air outlet a04 and a spare air outlet valve seat a05, and an air outlet filter check valve is installed; the oxygen input short pipe a07, the new air input short pipe a10, and the experimental measurement short pipe a06 are prefabricated with the mask cover, and the buffer guide a08 is also prefabricated with the oxygen input short pipe a07 and the new air input short pipe a10 in the mask. It is connected to the air outlet pipe a12 at the lower part of the mask cover with a flexible joint a28, and the air inlet of the air storage bag is sleeved at the lower part of the exhaust one-way straight a27.

[0130] The AC to DC module, the circuit-type air flow regulating device, the differential pressure sensor kit, and the negative ion generator module are all prefabricated and integrated on a control circuit board.

[0131] The negative pressure source machine, the positive pressure source machine, the control circuit board, the positive pressure air path diverter valve, and the negative pressure air flow diverter valve are installed in the chassis. The air inlet end of the negative pressure source machine is connected to the chassis air inlet short pipe c01 on the surface of the chassis through the diverter valve, and the air outlet end is connected to the air outlet pipe on the left side of the chassis. This air outlet pipe is connected to the spiral air flow pipe air inlet short pipe b07 outside the chassis through a hose, and the power supply line of the self-ballasted ultraviolet lamp is connected to the control circuit board in the chassis on this surface; the air inlet end of the positive pressure source machine is connected to the short pipe of the filter at the bottom of the chassis, and the air outlet end is connected to the mainstream end of the air exhaust. After the other mainstream end of the air exhaust is connected to the diverter valve, it is connected to a three-way pipe. One end of the three-way pipe is directly connected to the chassis air outlet short pipe c02 on the surface of the chassis, and the other end is connected to the air flow output short pipe a39 of the medicine flavor device. The air exhaust branch connection is as mentioned above.

[0132] Various display lights in the display area c03 on the chassis surface are connected to corresponding functional terminals on the control circuit board through wires.

[0133] Various knobs in the knob area c04 on the surface of the chassis are connected to the control circuit board and the diverter valve through wires or hoses.

[0134] Install the battery C06 on the left side of the chassis, and connect the battery interface on the chassis to the control circuit board through a wire.

[0135] Install the medicine smeller and filter at the bottom of the chassis.

[0136] Finally, connect the chassis air inlet short pipe c01 on the chassis surface with the exhaust pipe a30 through a hose, connect the chassis air outlet short pipe c02 on the chassis surface with the new air input short pipe a10 on the mask cover through a hose, and connect the oxygen pipe with the oxygen input short pipe a07 on the mask cover. At this point, all components of the present invention are ready for installation.

[0137] Put the face mask on the patient's face and fix it with a headband (not shown). Connect the alternating current to the socket on the surface of the chassis. Start the negative pressure source machine, the positive pressure source machine, and the negative ion generator. The waste gas exhaled by the patient enters the air storage bag through the air extraction one-way straight-through a27, and then is extracted. After being harmlessly treated by the microbial interception component, it is discharged into the ambient air. On the other hand, there are three sources of the air inhaled by the patient: the air inlet hole a02 on the upper part of the face mask cover, the oxygen input short tube a07, and the fresh air input short tube a10. Rotate the adjustment knobs of various airflows to supply various airflows required for the patient to breathe, so as to ensure that the patient obtains a comfortable breathing experience.

[0138] The above embodiments are only partial embodiments of the present invention and do not constitute any limitation to the present invention. Any simple modification, change, and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A microbial barrier system, characterized in that: It is mainly composed of the following parts: multi-channel multi-functional mask, multi-functional mask accessories, one-way air extraction, air storage bag, negative pressure source and negative pressure air flow regulating device, AC to DC module, microbial interception component, control circuit board; The multi-channel multifunctional mask is composed of a mask cover (a01) and a soft edge, and the mask cover (a01) is prefabricated with five channels: two air inlet holes (a02) located on both sides of the upper part of the mask cover (a01), the air inlet holes (a02) extending outwardly to form an air inlet valve seat (a03) for installing an air inlet check valve; two spare air outlet holes (a04) located on both sides of the lower part of the mask cover (a01), extending outwardly to form a spare air outlet valve seat (a05) for installing a spare air outlet check valve; an air outlet hole (a14) located directly below the mask cover (a01), extending outwardly to form an air outlet pipe seat (a11) and an air outlet pipe (a12) with a thread, for connecting to an air extraction one-way straight-through (a27); The multifunctional mask accessories include: an air inlet check valve, a spare air outlet check valve, and an air outlet filter; the air inlet check valve and the spare air outlet check valve have the same structure, but different opening pressures, the latter being greater than the former; they are respectively installed on the air inlet valve seat (a03) and the spare air outlet valve seat (a05); a filter seat is prefabricated on the outer side of the spare air outlet check valve for installing the air outlet filter, and the two are collectively referred to as an air outlet filter check valve; The main body of the one-way exhaust gas passage (a27) is in the shape of a circular tube, and an exhaust one-way valve is pre-installed in the upper part of the tube cavity, and the opening pressure of the spare exhaust one-way valve is greater than the opening pressure of the exhaust one-way valve in the one-way exhaust gas passage; The inner diameter of the air inlet of the air storage bag is the same as the lower end of the one-way air extraction straight-through (a27); when in use, the air inlet of the air storage bag is sleeved on the lower end of the one-way air extraction straight-through to store the waste gas exhaled by the user; The negative pressure source uses a micro air pump or a micro turbine fan, the air inlet end of which is connected to a one-way straight exhaust pipe through a hose to exhaust the gas in the air storage bag; The negative pressure gas flow regulating device adopts a circuit type regulating device or a gas path type regulating device or a combination thereof; The microbial interception component is composed of the following components: an ultraviolet disinfection component, a microbial filter sleeve, a chemical disinfection filter layer, and a disinfection device shell; The ultraviolet disinfection component is composed of the following three parts: a small self-ballasted ultraviolet lamp, a spiral airflow tube, and a lamp base plate; The lamp socket board (b01) is made of plastic and is in the shape of a disc, with upper and lower surfaces. The middle part of the upper surface is circularly convex and is called the lamp base (b02). Its inner cavity is in the shape of a blind tube, and there are two power cord holes (b03) at the top for installing the lamp head of the above-mentioned self-ballasted ultraviolet lamp. There are several lamp socket board fixing holes (b05) around the lamp socket board for connecting and fixing with the disinfection device shell and the microbial filter sleeve. Near the central convex part, there is an air inlet short tube hole (b04). The spiral air flow tube air inlet short tube (b07) passes through the air inlet short tube hole (b04) from below. There is a short tube-shaped ring on the lower surface of the lamp socket board (b01) around the air inlet short tube hole (b04), which is the spiral air flow tube fixing ring (b06). The inner diameter of the spiral air flow tube fixing ring (b06) is the same as the outer diameter of the spiral air flow tube, and it can tightly bind the spiral air flow tube. After the spiral air flow tube is installed, it will not be able to move; The spiral air flow tube is made of a transparent material with high ultraviolet transmittance and is in the shape of a spiral. The center of the whole spiral tube is hollow, and its space is slightly larger than the volume of the self-ballasted ultraviolet lamp. The self-ballasted ultraviolet lamp can be installed in this space. The air inlet end of the spiral air flow tube is prefabricated into a vertical short tube shape, and the air outlet end of the spiral air flow tube is also prefabricated into a vertical short tube shape. The opening of the air outlet end short tube faces upward and is directly opposite to the space in the center of the spiral air flow tube. The air flow output from the air outlet end short tube flows upward, impacts the top of the ultraviolet lamp, and then diverges around; The small self-ballasted ultraviolet lamp is in the shape of a short cylinder, and its volume is slightly smaller than the space in the center of the above-mentioned spiral air flow tube; The microbial filter sleeve is cylindrical in shape and has an outward-extending edge at the bottom surface. There are several microbial filter sleeve fixing holes (b08) at the extended edge, which are the same in position and number as the small holes on the lamp socket board, for fitting and fixing with the lamp socket board (b01). When in use, the microbial filter sleeve is sleeved upward over the spiral air flow tube and the self-ballasted ultraviolet lamp in the center; The chemical disinfection filter layer is composed of multiple layers of filtering materials; The disinfection device shell is made of plastic and is in the shape of a cylinder. The top is a disc with vertical edges, and there are several small holes matching the lamp socket board fixing holes (b05) for connecting with the lamp socket board (b01). There are several disinfection device shell ribs (b09) on the inner wall of the tube in the middle part, which are parallel to the long axis of the cylinder. The depressions between the disinfection device shell ribs (b09) are air guide grooves (b10). The gas coming out of the microbial filter sleeve mainly flows downward in the air guide grooves (b10). The space in the middle part is used to place the microbial filter sleeve and the components inside it. The lower part bulges outward, and a composite disinfection filter layer is installed in the inner cavity (b11) at the bottom of the disinfection device shell; The AC to DC module is prefabricated on the control circuit board. The negative pressure source machine and the control circuit board are installed in the chassis.

2. The microbial barrier system according to claim 1, characterized in that: The components of the microbial blocking system further include: a positive pressure source and a positive pressure air flow regulating device, a pressure relief valve, a pressure sensor kit, a negative ion generator module, a medicine dispenser, a battery; In the central part of the mask cover (a01), there are prefabricated fresh air input holes (a09) and upper oxygen holes arranged longitudinally. The multifunctional mask accessory is also matched with a fresh air input short pipe (a10) and an oxygen input short pipe (a07); The positive pressure source uses a micro air pump or a micro turbine fan, and its air outlet end is connected to the fresh air input short pipe (a10) on the mask cover (a01) through a hose; The positive pressure air flow regulating device is divided into two types according to different adjustment methods and principles: a circuit type regulating device and a gas path type regulating device; The negative ion generator module is micro-sized and low-power-consuming. The electrode that generates negative ions is installed in the gas path at the distal end of the exhaust pipe of the positive pressure source. The gas path is airtight. The air output by the positive pressure source machine is mixed with the negative ions generated by the electrode to form mixed air, which is transported into the mask through a hose connected to the fresh air input short pipe (a10) on the mask cover; The pipeline of the positive pressure source is divided into two branches from the air outlet end of the positive pressure source machine according to functions, air flow rates, and pipeline internal resistances: the main pipeline and the branch pipeline; The air output end of the positive pressure source is connected to the main end of the air manifold. The air manifold has three branch pipelines. After the other main end of the air manifold is connected to a flow control valve, it is then connected to a tee. One end of the tee is directly connected to the air outlet pipe on the surface of the chassis, and the other end is connected to the air outlet end of the flavorizer; the first branch pipeline of the air manifold is connected to a pressure relief valve. When the pressure in the positive pressure pipeline reaches the preset value, the pressure relief valve opens to protect the positive pressure source machine; the second branch pipeline is connected to the measurement end of the pressure sensor; the third branch pipeline is connected to a micro ball valve. The air output end of the micro ball valve is connected to the input end of the flavorizer. The output end of the flavorizer is connected to the tee connected to the main pipeline through a hose, and the branch gas returns to the main pipeline. The above-mentioned micro ball valve adjusts the cross-sectional area of the valve core channel to regulate the gas volume passing through the branch gas path; The pressure sensor kit includes a pressure sensor, a micro speaker, and a warning light on the surface of the chassis; the measurement end of the pressure sensor is installed in the second branch pipeline mentioned above, and the signal output end is connected to the micro speaker through a control circuit board. When the internal pressure in the second branch pipeline rises, it will trigger a synchronous change in the voltage at the signal output end of the sensor. When it reaches the operating voltage of the micro speaker, the speaker sounds an alarm and the warning light lights up; The medicine flavor device is an odor dispersing device pre-installed on the branch pipeline, and has a cylindrical or rectangular shape. It has an airflow input short tube (a34) and an airflow output short tube (a39) at both ends, which are respectively connected to the corresponding parts of the branch pipeline. The medicine flavor device body is two tubular structures that are integrated into one, respectively called the medicine flavor device shell (a33) and the medicine flavor device core (a36). The space between the two tubes is hollow, and the two tubes are connected by snaps or threads, and are sealed by a soft material sealing ring; the medicine flavor device core (a36) is also two overlapping tubular structures. The space between the two tubes is hollow, and the two ends are closed with a common wall. A plurality of long A strip-shaped air permeable groove; a medicine core made of a highly absorbent air permeable material is pre-placed in the space between the two tubular structures of the medicine flavor device core, which is used to absorb liquid with medicinal properties or medicinal flavor; an air flow input short tube (a34) is pre-formed at the center of the top of the medicine flavor device shell (a33); an air flow output short tube (a39) is pre-formed at the center of the top of the medicine flavor device core (a36), and is in equal diameter communication with the inner cavity of the tubular structure inside the medicine flavor device core; the gas from the air flow input short tube (a34) cannot directly reach the air flow output short tube (a39), and must pass through the air permeable groove and the medicine core of the medicine flavor device core (a36) before reaching the air flow output short tube (a39); The chassis surface is divided into three areas: pipeline area, display area (c03), and switch knob area (c04); the pipeline area is prefabricated with a chassis air inlet short pipe (c01) and a chassis air outlet short pipe (c02); the knob area is pre-installed with a positive pressure source start and power adjustment knob, a negative pressure source start and function adjustment knob, a positive pressure source diverter valve adjustment knob, a negative pressure source diverter valve adjustment knob, a medicine flavor device gas flow adjustment knob, a negative ion generator power switch, and an internal power supply-battery power conversion switch; the display area is pre-installed with an AC power indicator light, a positive pressure source working indicator light, a negative pressure source working indicator light, an ultraviolet lamp working indicator light, a negative ion generator working indicator light, and a positive pressure gas circuit high pressure alarm light; the chassis bottom is also divided into three areas: The hot zone is pre-installed with several heat dissipation holes; the medicine flavor device groove is used to install the medicine flavor device, and the short air inlet and outlet pipes at both ends of the medicine flavor device can be quickly connected to the quick-release connectors in this groove; the remaining area is the filter area, which is used to install the filter for the positive pressure source; the left side of the chassis is pre-fabricated with a microbial interception component mounting seat, which is conformal to the disinfection device shell and can fix the disinfection device shell; an airflow interface and a power supply interface are pre-fabricated above the mounting seat, and the airflow interface is connected to the air outlet end of the negative pressure source in the chassis, and is connected to the short air inlet pipe (b07) of the spiral airflow tube outside the chassis; a cover conformal to the chassis body is installed around the disinfection device shell; a battery (c06) is installed on the right side of the chassis; and a handle (c07) is pre-fabricated on the top of the chassis.

3. The microbial barrier system according to claim 2, characterized in that: in The central part of the mask cover (a01) is also prefabricated with an experimental measurement hole (a13) and matched with an experimental measurement short tube (a06) for measuring the pressure inside the mask or the air components inside the mask.

4. The microbial barrier system according to claim 2, characterized in that: One end of the oxygen input short tube (a07) and the fresh air input short tube (a10) is prefabricated with a buffer flow deflector (a08). The buffer flow deflector (a08) is used to buffer the oxygen and fresh air with a large flow rate input into the mask, avoiding the direct impact of these two gases on the facial skin of the user and causing discomfort. The material of the buffer flow deflector (a08) is the same as that of the two short tubes. The buffer flow deflector (a08) is composed of a flow deflector plate (a15) and support ribs (a17). The surface of the flow deflector plate (a15) is slightly concave and conforms to the inner surface of the mask cover (a01). The support ribs (a17) are used to connect the flow deflector plate (a15) with the inner openings of the oxygen input short tube (a07) and the fresh air input short tube (a10). Many small holes called air holes (a16) are prefabricated on the flow deflector plate (a15). When the input gas impacts the flow deflector plate (a15), a part of the air flow comes out from the air holes (a16), and another part of the air flow passes through between the support ribs (a17) and spreads out along the inner side of the mask cover (a01), thereby buffering the pressure of the air flow.

5. The microbial barrier system according to claim 1, characterized in that: Both the intake one-way valve and the standby outlet one-way valve adopt pumpkin-shaped one-way valves; The appearance of the pumpkin-shaped one-way valve is oblate, and it is composed of a diaphragm box, a one-way valve diaphragm (a22), a diaphragm slider (a20), a central shaft (a21), and an elastic reset device; there is a hole in the center of the one-way valve diaphragm (a22) for embedded connection with the diaphragm slider (a20); the diaphragm slider (a20) is made of hard plastic, and its cross-section is an inverted T shape. The lower part is a very thin circular sheet, called the diaphragm slider support (a23), which is used to support the one-way valve diaphragm (a22). The center of the diaphragm slider (a20) is a short tube. The outer diameter of the diaphragm slider (a20) is slightly larger than the small hole in the center of the one-way valve diaphragm (a22). After the small hole in the center of the one-way valve diaphragm (a22) is sleeved on the diaphragm slider (a20), it will not slip off. The inner diameter of the short tube in the center of the diaphragm slider (a20) is slightly larger than the outer diameter of the central shaft (a21), and the diaphragm slider (a20) can slide smoothly along the central shaft (a21); the elastic reset device is made of the same material as the one-way valve diaphragm. The top of the elastic reset device is a small circular sheet. There is a small hole in the center of the top small circular sheet (a25) of the elastic reset device, and its diameter is slightly smaller than the central shaft. The bottom of the elastic reset device is prefabricated into a small ring. Between the top and the bottom, there are several strip-shaped elastic bodies (a24). When the top small circular sheet (a25) and the bottom small ring (a26) of the elastic reset device approach each other under external pressure, the elastic bodies (a24) bulge outwards; the diaphragm box is made of hard plastic and is used to accommodate the completely assembled one-way valve diaphragm - diaphragm slider and the elastic reset device. It is a hollow oblate shape and is composed of two parts: the top and the bottom. There is a shallow groove conforming to the one-way valve diaphragm on the bottom (a18) of the diaphragm box, called the one-way valve diaphragm seat (a19). There is a small shallow groove in the center area of the bottom. The two grooves are connected by ribs. The central groove conforms to the bottom of the diaphragm slider (a20), and there is a small hole in the center, with a diameter slightly smaller than the central shaft. The top of the diaphragm box is a circular sheet, and the top and the bottom are connected by relatively wide ribs. There is also a small hole with a diameter smaller than the central shaft in the center of the top; the central shaft is an equal-diameter hollow metal tube, with an outer diameter slightly smaller than the inner diameter of the short tube of the diaphragm slider and slightly larger than the small holes in the centers of both ends of the diaphragm box.

6. The microbial barrier system according to claim 5, characterized in that: There are three forms of the bottom structure of the elastic body (a24): the bottom small ring (a26) of the elastic reset device is prefabricated into one body with the one-way valve diaphragm (a22); the bottom small ring (a26) of the elastic reset device only contacts the one-way valve diaphragm (a22) and is not integrated; the bottom small ring (a26) of the elastic reset device is not used, and the lower end of the elastic body is prefabricated into one body with the one-way valve diaphragm.

7. The microbial barrier system according to claim 5, wherein: The elastic reset device is replaced by a compression spring.

8. The microbial barrier system according to claim 1, characterized in that: The main body of the air extraction one-way straight-through (a27) is in the shape of a circular tube, and an air outlet one-way valve is pre-installed in the upper part of the tube cavity. The air outlet one-way valve adopts an inverted duckbill one-way valve (a31). The inverted duckbill one-way valve (a31) is installed in the center or on one side of the circular tube cavity of the air extraction one-way straight-through (a27). The top of the air outlet one-way valve extends into a funnel shape and extends into a thin plate around, and is integrated with the inner cavity of the air extraction one-way straight-through (a27), which is called a closed body (a29). The closed body (a29) closes the circular tube cavity except for the one-way valve inlet, forcing the gas from the air outlet pipe (a12) to only flow downward through the air outlet one-way valve and not flow backward. A horizontal short tube is prefabricated at a position near the upper part of the circular tube cavity, which is called an air extraction pipe (a30), and its inner diameter is the same as or slightly larger than the inlet pipe of the negative pressure source. If the one-way valve is arranged in the center of the circular tube, there is no requirement for the prefabrication position of the air extraction pipe (a30). If the one-way valve is arranged on one side of the circular tube, the air extraction pipe (a30) must be prefabricated at its opposite position. The upper end surface of the circular tube of the air extraction one-way straight-through (a27) extends around in a platform shape, and the platform diameter is the same as the outer diameter of the air outlet pipe (a12) on the mask cover (a01). A union joint (a28) is prefabricated between this platform and the air extraction pipe for connecting the air extraction one-way straight-through (a27) to the air outlet pipe (a12) on the mask cover (a01), and a soft rubber ring on the connection surface plays a sealing role.

9. The microbial barrier system according to claim 1, wherein: The air storage bag is in a three-dimensional shape or a flat shape. The microbial filter sleeve is made of filter material. The filter material is selected from the meltblown cloth for manufacturing N95 masks or N99 masks, or the filter material for manufacturing HEPA. A hydrophobic layer made of the same material as the inner layer of the N95 mask is covered on the inner surface of the filter material, and a protective layer made of the same material as the outer layer of the N95 mask is covered on the outer surface. The chemical disinfection and filtration layer is composed of multiple layers of filtering materials, and its materials include high-efficiency filter cotton, medium-efficiency filter cotton, meltblown cloth, multi-layer cotton gauze, sponge, and activated carbon. Among them, the multi-layer cotton gauze and sponge need to be impregnated with disinfectant solution.

10. The microbial barrier system according to claim 1, wherein: The apertures of the air inlet hole (a02) and the spare air outlet hole (a04) on the mask cover (a01) are both above 10 mm. The shapes and diameters of the spare air outlet hole and the air inlet hole are the same and can be interchanged. The inner diameters of the air outlet hole (a14) and the air outlet pipe (a12) are the same and must be greater than or equal to 16 mm.

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