Air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-fog sterilizer

Abstract

The utility model relates to a sterilizer adopting an air pump as gas power for mixed spraying of active oxygen cluster gas prepared by a xenon excimer light source and a hydrogen peroxide dilute solution. A two-fluid nozzle or a one-fluid nozzle, a Venturi tube, a centralized transmission type xenon excimer active oxygen cluster generator, a xenon excimer light source, a miniature air pump, a peristaltic pump or a miniature liquid pump, a liquid container tank, an air pump, an air pressure tank, a gas pressure gauge, an electronic valve and a regulating valve are taken as basic components; the components are reasonably connected together through pipelines to be combined to form a basic framework of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer framework, and the basic framework is used for overcoming the defect that a dilute solution hydrogen peroxide sprayer is independently used. The xenon excimer reactive oxygen species and the hydrogen peroxide dilute solution are mixed and sprayed, so that the effect of quickly disinfecting the environment at a high level can be achieved.

Description

Background Art

[0002] In the spectrum, light below 200nm is called vacuum ultraviolet (VUV), which is a spectrum that can excite oxygen molecules and water molecules in the air to produce reactive oxygen species. Currently, the xenon excimer light source that can be used commercially can emit 172nm vacuum ultraviolet light, which can excite oxygen molecules and water molecules in the air to form a mixed gas of reactive oxygen species after irradiating the air. Another commercially available light source is the low-pressure mercury lamp. The low-pressure mercury lamp can emit 254nm short-wave ultraviolet light (UVB) and 185nm vacuum ultraviolet light (VUV). However, because the 185nm spectrum it emits is relatively weak, and the 254nm short-wave ultraviolet light it emits has a degrading effect on reactive oxygen species, the efficiency of the low-pressure mercury lamp in preparing reactive oxygen species is nearly 50 times lower than that of the xenon excimer light source.

[0003] In the technical field, the level of awareness of reactive oxygen species produced by VUV excitation of air is generally low. Also, due to the constraints of lagging technical regulations, some literature refers to reactive oxygen species produced by excitation of air with wavelengths below 200nm as "ozone", and confuses it with "ozone" prepared by artificial air discharge technology. Recent studies have confirmed from many aspects that these are two disinfection factors with different components and different disinfection effects. The results of GC-MS (gas chromatography-mass spectrometry) tests on the products after air discharge in this century show that the terminal molecular ion products after air discharge are mainly hydrated nitrate ion clusters (NO3 - (H2O) n The main terminal molecular ion product of the 172nm VUV light emitted by the xenon excimer light source after irradiation of air is the hydrated superoxide anion cluster (O2 - (H2O) n ), hydrated hydroxide ion clusters (OH - (H2O) n ), hydrated trioxide ion clusters (O3 - (H2O) n ). Their sterilization effects are also significantly different. For example, existing experiments have shown that when the ambient humidity is lower than 20%, the active oxygen clusters still have a 75% sterilization effect, while ozone has almost no sterilization effect in a 20% humidity environment. Therefore, the xenon excimer light source is a third-generation low-temperature sterilization technology that uses air as a raw material to prepare highly efficient and environmentally friendly sterilization substances (or sterilization factors) with excimer light sources as technical features.

[0004] Hydrogen peroxide is a conventional disinfectant, and there are currently two basic uses. One is to use a high concentration of hydrogen peroxide to flash evaporate to form hydrogen peroxide gas for disinfection. This disinfection method is called VHP (Vaporized Hydrogen Peroxide Sterilization). This method is currently widely used in disinfection cabinets as a high-efficiency disinfection factor. Its main representative product is the plasma hydrogen peroxide disinfector. Its basic working principle is to first use flash evaporation technology to vaporize hydrogen peroxide and enter it into the disinfection cabinet for disinfection, then add an electric field (called plasma) to degrade the remaining unacted residual hydrogen peroxide, and then inject a new round of hydrogen peroxide gas, and then apply an electric field to remove the remaining hydrogen peroxide, and so on. The cycle is repeated to achieve the final disinfection effect. VHP technology is currently recognized internationally as an efficient and environmentally friendly disinfection technology. However, due to the excessive power consumption of VHP, it is not suitable for disinfection of large environments and indoor environments. Therefore, one of the current methods of using hydrogen peroxide for environmental disinfection is spraying or atomizing a dilute hydrogen peroxide solution, which is actually using liquid hydrogen peroxide for disinfection, which is significantly different from the VHP method of using vaporized hydrogen peroxide for disinfection. Existing studies have shown that the disinfection effect of vaporized hydrogen peroxide is 200-1000 times higher than that of liquid hydrogen peroxide, so the disinfection effect of using liquid hydrogen peroxide is almost qualitatively different from that of using vaporized hydrogen peroxide.

[0005] In order to improve the disinfection effect of liquid hydrogen peroxide, hydrogen peroxide micro-mist spray disinfectors have appeared. This method uses high-pressure gas to entrain the micro-mist formed by the dilute hydrogen peroxide solution to spray and disinfect the indoor environment. Since hydrogen peroxide is a strong oxidant, high concentrations of hydrogen peroxide can cause violent decomposition or even explosion under direct sunlight or mixed with impurities such as dust. Therefore, regulations stipulate that the hydrogen peroxide solution used for spraying should be a 3% dilute hydrogen peroxide solution. At present, some hydrogen peroxide micro-mist disinfectors use about 7.5% dilute hydrogen peroxide solution for micro-mist spraying in order to improve the explosive disinfection effect of hydrogen peroxide and reduce the resulting high humidity.

[0006] The World Health Organization's International Agency for Research on Cancer published a preliminary list of carcinogens for reference on October 27, 2017. Hydrogen peroxide is on the list of Category 3 carcinogens. Although hydrogen peroxide has long been considered the safest disinfectant, the risks to the body's health caused by long-term exposure to hydrogen peroxide still need to be taken seriously. Utility Model Content

[0007] The applicant has previously submitted a patent application for "Centralized Transmission Xenon Excimer Light Source Ozone Generator" (application number: 202010875608.4). The patent application describes placing a xenon excimer light source in a xenon excimer ozone excitation chamber constructed by a metal cavity container with vents at both ends, and connecting it to a pressure gas source supply device through a pipeline. The pressure gas source supply device can provide pressurized gas to the closed xenon excimer ozone excitation chamber. During the lighting of the xenon excimer light source, the ozone mixed gas generated in the closed xenon excimer ozone excitation chamber is transported along the pipeline under the action of air pressure. It should be noted that when submitting the patent application, subject to the constraints of existing laws and regulations, the disinfection factor generated by the xenon excimer light source radiating the air was called "xenon excimer ozone". Since this name cannot fully express the objective appearance of the disinfection factor generated, it was later modified to "xenon excimer active oxygen clusters", or "active oxygen clusters" for short.

[0008] The technical basis of the present invention is to combine the centralized transmission type xenon excimer light source active oxygen cluster generator technology with the hydrogen peroxide micro-mist spraying technology to form a design scheme of "xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector".

[0009] The technical solution of the xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is characterized in that it uses an air pump as its power source. There are two basic physical structures of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer, one is the basic physical structure using a two-fluid nozzle, and the other is the basic physical structure using a single-fluid nozzle.

[0010] The basic structure of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is composed of a two-fluid nozzle or a one-fluid nozzle, a venturi tube (jet tube), and / or an active oxygen cluster (ozone) excitation chamber of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator, a xenon excimer light source (Xe), a micro air pump, and / or a peristaltic pump (micro liquid pump), a liquid container tank, an air pump, and / or an air pressure tank, and / or a gas pressure gauge, and / or a gas electronic valve, and / or a gas regulating valve as basic components. These main components are reasonably connected to each other through liquid pipes and / or gas pipes to form the basic physical structure of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer. Its working principle is that the xenon excimer light source uses air as a gas source and excites the air to produce active oxygen clusters when it is lit. The gas forms a high-speed airflow of xenon excimer active oxygen clusters under the action of an air pump. The aqueous hydrogen peroxide solution is sent into a combination of a two-fluid nozzle or a one-fluid nozzle and a venturi tube (jet tube) under the action of a micro peristaltic pump (or a micro liquid pump). The high-speed airflow of xenon excimer active oxygen clusters is mixed with the aqueous hydrogen peroxide solution and then sprayed into the sterilized space through a two-fluid nozzle or a one-fluid nozzle to form an active oxygen cluster hydrogen peroxide micro-mist. Select a suitable two-fluid nozzle or a one-fluid nozzle, adjust the air pressure of the air pump to > 0.15MPa, adjust the peristaltic pump (or micro liquid pump) so that the flow rate of the aqueous hydrogen peroxide solution is between 1ml / min-50ml / min, and use a laser detection method (Franhall refraction method or Toppler method) to ensure that the average particle size of the sprayed active oxygen cluster hydrogen peroxide micro-mist is within the range of 20um-100um. The function of the gas regulating valve is to adjust the size of the airflow. In the basic structure of the air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide mist sterilizer, the two-fluid nozzle is connected in parallel with the air pump and only needs one venturi tube; when it is connected in series with the air pump, no venturi tube is needed; the one-fluid nozzle is connected in parallel with the air pump and needs two venturi tubes; when it is connected in series with the air pump, only one venturi tube is needed.

[0011] Why is the average particle size of hydrogen peroxide micro-mist within the range of 20um-100um? The applicant investigated various types of one-fluid nozzles and two-fluid nozzles that can be commercially purchased on the market and found that the nozzle that can spray the smallest particle size is the nozzle with an average particle size within the range of 20um-100um. The evaluation detection method is generally recognized to be more accurate using the Fran Hall refraction method or the Toppler method. However, most of the hydrogen peroxide micro-mist disinfectors that are currently on the market claim that the particle size of the micro-mist is 1um, which is actually inappropriate publicity, because the method of expressing the particle size of the micro-mist is generally expressed by the average particle size within a range. In addition, the accuracy of the equipment for particle size detection will vary greatly, and the detection method of the particle size of the micro-mist is not included in the corporate standards of most hydrogen peroxide micro-mist disinfectors. In addition, as mentioned above, what can significantly improve the disinfection ability of hydrogen peroxide is the dissociation of hydrogen peroxide into ground state oxygen (O) and hydroxyl radicals (HO·). Without this conversion, smaller droplets are indeed conducive to the oxidation of hydrogen peroxide, but it does not produce a significant improvement like VHP technology.

[0012] In the basic structure of the air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide mist sterilizer, there is a significant technical feature that the use of a single-fluid nozzle in the structure requires one more venturi tube than the use of a two-fluid nozzle, that is, two venturi tubes are required.

[0013] The disinfectant used is an aqueous solution of hydrogen peroxide, or a hydrogen peroxide silver ion disinfectant, or a hydrogen peroxide zinc ion disinfectant, or water. Among them, the concentration of hydrogen peroxide is between 0.1% and 40%, and the optimal concentration is 3% and 7.5%; the concentration of hydrogen peroxide in hydrogen peroxide silver ion disinfectant (also called hydrogen peroxide silver ion chelating agent, or hydrogen peroxide silver ion complex, or Octasil disinfectant) is between 0.1% and 40%, and the concentration of silver ions is between 0.001% and 0.01%, and the optimal concentration is that the concentration of hydrogen peroxide is between 3% and 7.5%, and the concentration of silver ions is between 0.001% and 0.005%; the concentration of hydrogen peroxide in hydrogen peroxide zinc ion disinfectant is between 0.1% and 40%, and the concentration of zinc ions is between 0.001% and 0.01%, and the optimal concentration is that the concentration of hydrogen peroxide is between 3% and 7.5%, and the concentration of zinc ions is between 0.001% and 0.005%; the water can be tap water or purified water, and purified water is recommended.

[0014] An embedded MCU (microcontroller) digital control circuit is used to electrically control the active components in the xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist disinfector. The main control parameters include the lighting and extinguishing time of the xenon excimer light source lamp, the gas pressure of the air pressure tank, the flow rate of the peristaltic pump (micro liquid pump), and the control of the switching parameters of the air solenoid valve and the air pump.

[0015] For the embedded MCU (microcontroller) digital control circuit of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide mist disinfector, it should be ensured that the start time of the air pump supplying air to the active oxygen cluster excitation chamber is not less than 3s earlier than the time when the xenon excimer light source lamp is lit, so as to ensure that there is air flow passing through the surface of the xenon excimer light source lamp when the xenon excimer light source lamp is lit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the schematic diagram of a two-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer; Figure 2 It is the schematic diagram of a two-fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector; Figure 3 It is a schematic diagram of a fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector; Figure 4 This is a schematic diagram of a fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer. Figure 1 , 2 , 3, and 4, 1 is an active oxygen cluster hydrogen peroxide mist (dry mist); 2 is a two-fluid nozzle; 3 is an injection port of the two-fluid nozzle; 4 is the inlet end of the two-fluid nozzle; 5 is the negative pressure inlet end of the two-fluid nozzle; 6 is a gas pressure gauge; 7 is an air pressure tank; 8 is an active oxygen cluster (ozone) excitation chamber of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator; Xe is a xenon excimer lamp; 9 is a Venturi tube 1; 10 is the inlet end of the Venturi tube 1; 11 is a Venturi tube; 1 is the negative pressure inlet end of the inner tube 1; 12 is a peristaltic pump or a liquid pump; 13 is a liquid container tank; 14 is hydrogen peroxide; 15 is a gas regulating valve; 16 is a venturi tube 2; 17 is the inlet end of the venturi tube 2; 18 is the negative pressure inlet end of the venturi tube 2; 21 is a fluid nozzle; J1 is a gas solenoid valve 1; J2 is a gas solenoid valve 2; DA: air pump A; DB: air pump B (micro air pump); G solid lines represent gas pipelines; W double lines represent liquid pipelines. DETAILED DESCRIPTION

[0017] The present invention has been described in detail above. Obviously, those skilled in the art may make many modifications and variations after becoming familiar with the present invention without departing from the spirit and scope of the present invention.

[0018] Embodiment 1 A design of a two-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer.

[0019] Figure 1 This is the schematic diagram of a two-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector. Figure 1In the figure, 1 is active oxygen cluster hydrogen peroxide micro mist (dry mist); 2 is a two-fluid nozzle; 3 is the injection port of the two-fluid nozzle; 4 is the inlet end of the two-fluid nozzle; 5 is the negative pressure inlet end of the two-fluid nozzle; 6 is a gas pressure gauge (gas pressure sensor); 7 is an air pressure tank; 8 is an active oxygen cluster (ozone) excitation chamber of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator; Xe is a xenon excimer lamp; 9 is a venturi tube 1; 10 is the inlet end of the venturi tube 1; 11 is the negative pressure inlet end of the venturi tube 1; 12 is a peristaltic pump; 13 is a liquid container tank; 14 is water or hydrogen peroxide (0.5%-7.5%); 15 is a gas regulating valve; G solid line represents a gas pipeline; W double line represents a liquid pipeline; J1 gas solenoid valve 1; J2 gas solenoid valve 2; DA: air pump A; DB air pump B (micro air pump).

[0020] Its working principle is that the first step is to store high-pressure gas in the air pressure tank: J1 gas solenoid valve 1 is closed, J2 gas solenoid valve 2 is turned on, DA (air pump A) is started to fill the air pressure tank (7) with air, and when the pressure in the air pressure tank (7) reaches the set value (should be greater than>0.15MPa), J2 is closed and DA (air pump A) is turned off. At this time, the air pressure and air storage volume required for injection are maintained in the air pressure tank (7); the second step is to prepare a high-pressure and high-speed airflow of active oxygen clusters: J1 is turned on, and the gas in the air pressure tank (7) will enter the venturi tube 1 (9) through the inlet end (10) of the venturi tube 1 (9). If DB (air pump B) is started at this time, the air flow generated by DB (air pump B) will enter After entering the active oxygen cluster excitation chamber (8) of the centralized transmission type xenon excimer active oxygen cluster generator, active oxygen cluster gas is generated around the lamp tube (Xe) of the xenon excimer light source; the active oxygen cluster gas flowing out of the active oxygen cluster excitation chamber (8) of the centralized transmission type xenon excimer active oxygen cluster generator enters the venturi tube 1 (9) through the negative pressure inlet end (11) of the venturi tube 1 (9) and then merges with the gas in the air pressure tank (7) to form a high-pressure and high-flow rate active oxygen cluster airflow, and enters the cavity of the two-fluid nozzle (2) through the gas regulating valve (15) and the inlet end (4) of the two-fluid nozzle (2); the concentration of active oxygen clusters in the active oxygen cluster high-pressure and high-speed airflow can be controlled by controlling the lighting time of the xenon excimer lamp tube (Xe). The third step is to supply hydrogen peroxide solution: the peristaltic pump (12) is started, and the hydrogen peroxide solution (14) in the liquid container tank (13) can be pumped into the cavity of the two-fluid nozzle (2) through the negative pressure inlet end (5) of the two-fluid nozzle; by adjusting the flow rate of the peristaltic pump (12), the amount of hydrogen peroxide solution pumped into the cavity of the two-fluid nozzle (2) can be changed. The fourth step is to spray the active oxygen cluster hydrogen peroxide mist: the hydrogen peroxide solution and the high-pressure and high-flow rate active oxygen cluster air flow are combined in the cavity of the two-fluid nozzle (2) and then sprayed out through the spray port (3) of the two-fluid nozzle to form the active oxygen cluster hydrogen peroxide mist (1).

[0021] In the two-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector, the control of the internal active electrical components is completed by the embedded MCU (microprocessor) digital circuit, wherein the main control parameters are the pressure of the air pressure tank, the lighting and shut-down time of the xenon excimer light source lamp (Xe), the peristaltic pump flow rate, and the steam mist spraying time; wherein the opening time of DB (air pump B) should be at least 3s earlier than the lighting time of the xenon excimer light source lamp (Xe), and the closing time should be at least 3s later than the closing time of the xenon excimer light source lamp (Xe), so as to ensure that airflow flows over the surface of the lamp when the xenon excimer light source lamp is lit.

[0022] The design feature of the two-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is that it only needs to be equipped with one Venturi tube.

[0023] Embodiment 2 A design of a two-fluid nozzle series / air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer.

[0024] Figure 2 This is the schematic diagram of a two-fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector. Figure 2 In the figure, 1 is active oxygen cluster hydrogen peroxide micro mist (dry mist); 2 is a two-fluid nozzle; 3 is the injection port of the two-fluid nozzle; 4 is the inlet end of the two-fluid nozzle; 5 is the negative pressure inlet end of the two-fluid nozzle; 6 is a gas pressure gauge; 7 is an air pressure tank; 8 is an active oxygen cluster (ozone) excitation cabin of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator; Xe is a xenon excimer lamp; 12 is a peristaltic pump; 13 is a liquid container tank; 14 is water or hydrogen peroxide (0.5%-7.5%); 15 is a gas regulating valve; G solid line represents a gas pipeline; W double line represents a liquid pipeline; J1 gas solenoid valve 1; J2 gas solenoid valve 2; DA: air pump A.

[0025] Its working principle is as follows: the first step is to store high-pressure gas in the air pressure tank: J1 gas solenoid valve 1 is closed, J2 gas solenoid valve 2 is turned on, DA (air pump A) is started to fill the air pressure tank (7) with air; when the pressure in the air pressure tank (7) reaches the set value (should be greater than> 0.15MPa), J2 is closed and DA (air pump A) is turned off. At this time, the air pressure tank (7) maintains the air pressure and air storage volume required for injection; the second step is to prepare the high-pressure and high-speed airflow of active oxygen clusters: J1 is turned on, and the gas in the air pressure tank (7) will enter the centralized transmission After the active oxygen cluster excitation chamber (8) of the transmission type xenon excimer active oxygen cluster generator, a high-pressure and high-speed active oxygen cluster airflow is generated around the lamp tube (Xe) of the xenon excimer light source. The high-pressure and high-speed active oxygen cluster airflow flowing out of the active oxygen cluster excitation chamber (8) of the centralized transmission type xenon excimer active oxygen cluster generator enters the cavity of the two-fluid nozzle (2) through the gas regulating valve (15) and the inlet end (4) of the two-fluid nozzle (2); the concentration of active oxygen clusters in the high-pressure and high-speed active oxygen cluster airflow can be controlled by controlling the lighting time of the xenon excimer lamp tube (Xe). The third step is to supply hydrogen peroxide solution: the peristaltic pump (12) is started, and the hydrogen peroxide aqueous solution (14) in the liquid container tank (13) can be pumped into the cavity of the two-fluid nozzle (2) from the negative pressure inlet end (5) of the two-fluid nozzle. By adjusting the flow rate of the peristaltic pump (12), the amount of hydrogen peroxide aqueous solution pumped into the cavity of the two-fluid nozzle (2) can be changed. The fourth step is to spray the active oxygen cluster hydrogen peroxide mist: the hydrogen peroxide aqueous solution and the high-pressure and high-flow rate active oxygen cluster gas flow are combined in the cavity of the two-fluid nozzle (2) and then sprayed out through the spray port (3) of the two-fluid nozzle (2) to form the active oxygen cluster hydrogen peroxide mist (1).

[0026] In the two-fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector, the control of the internal active electrical components is completed by the embedded MCU (microprocessor) digital circuit, wherein the main control parameters are the pressure of the air pressure tank, the lighting and closing time of the xenon excimer light source lamp tube (Xe), the peristaltic pump flow rate, and the steam mist spraying time; wherein the conduction time of the gas solenoid valve J1 should be more than 3s earlier than the lighting time of the xenon excimer light source lamp tube (Xe), and the closing time should be more than 3s later than the closing time of the xenon excimer light source lamp tube (Xe), so as to ensure that there is airflow flowing over the surface of the lamp tube when the xenon excimer light source lamp tube is lit. The opening of DA (air pump A) is controlled by feedback of the set value of the pressure sensor (6).

[0027] The design feature of the two-fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is that there is no Venturi tube.

[0028] Embodiment 3 A design of a fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer.

[0029] Figure 3 This is a schematic diagram of a fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector. Figure 3 In the figure, 1 is active oxygen cluster hydrogen peroxide micro mist (dry mist); 6 is a gas pressure gauge; 7 is an air pressure tank; 8 is an active oxygen cluster (ozone) excitation chamber of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator; Xe is a xenon excimer lamp; 9 is a Venturi tube 1; 10 is the inlet end of the Venturi tube 1; 11 is the negative pressure inlet end of the Venturi tube 1; 12 is a peristaltic pump; 13 is a liquid container tank; 14 is water or hydrogen peroxide (0.5%-7.5%); 15 is a gas regulating valve; G solid line represents a gas pipeline; W double line represents a liquid pipeline; J1 gas solenoid valve 1; J2 gas solenoid valve 2; DA: air pump A; DB air pump B (micro air pump); 16 is a Venturi tube 2; 17 is the inlet end of the Venturi tube 2; 18 is the negative pressure inlet end of the Venturi tube 2; 21 is a fluid nozzle.

[0030] Its working principle is as follows: the first step is to store high-pressure gas in the air pressure tank: J1 gas solenoid valve 1 is closed, J2 gas solenoid valve 2 is turned on, DA (air pump A) is started to fill the air pressure tank (7) with air, and when the pressure in the air pressure tank (7) reaches the set value (should be greater than>0.15MPa), J2 is closed and DA (air pump A) is turned off. At this time, the air pressure and air storage volume required for injection are maintained in the air pressure tank (7); the second step is to prepare a high-pressure and high-speed airflow of active oxygen clusters: J1 is turned on, and the gas in the air pressure tank (7) will enter the venturi tube 1 (9) through the inlet end (10) of the venturi tube 1 (9). If DB (air pump B) is started at this time, the air flow generated by DB (air pump B) After entering the active oxygen cluster excitation chamber (8) of the centralized transmission type xenon excimer active oxygen cluster generator, active oxygen cluster gas is generated around the lamp tube (Xe) of the xenon excimer light source; the active oxygen cluster gas flowing out of the active oxygen cluster excitation chamber (8) of the centralized transmission type xenon excimer active oxygen cluster generator enters the venturi tube 1 (9) through the negative pressure inlet end (11) of the venturi tube 1 (9) and merges with the gas in the air pressure tank (7) to form a high-pressure and high-flow rate active oxygen cluster airflow, and enters the venturi tube 2 (16) through the gas regulating valve (15) and the inlet end (17) of the venturi tube 2. By controlling the lighting time of the xenon excimer lamp tube (Xe), the concentration of active oxygen clusters in the active oxygen cluster high-pressure and high-speed airflow can be controlled. The third step is to supply hydrogen peroxide solution: the peristaltic pump (12) is started, and the hydrogen peroxide aqueous solution (14) in the liquid container tank (13) can enter the venturi tube 2 (16) through the negative pressure inlet end (18) of the venturi tube 2 (16); by adjusting the flow rate of the peristaltic pump (12), the amount of hydrogen peroxide aqueous solution pumped into the venturi tube 2 (16) can be changed. The fourth step is to spray a water vapor mist of hydrogen peroxide and active oxygen clusters: the hydrogen peroxide aqueous solution and the high-pressure and high-flow rate active oxygen cluster air flow are combined in the venturi tube 2 (16) and then sprayed out through a fluid nozzle (21) to form an active oxygen cluster hydrogen peroxide mist (1).

[0031] In a fluid nozzle parallel / air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer, the control of the internal active electrical components is completed by an embedded MCU (microprocessor) digital circuit, wherein the main control parameters are the pressure of the air pressure tank, the lighting and shut-off time of the xenon excimer light source lamp (Xe), the peristaltic pump flow rate, and the steam mist spraying time; wherein the turn-on time of J1 should be more than 3s earlier than the lighting time of the xenon excimer light source lamp (Xe), and the shut-off time of the xenon excimer light source lamp (Xe) should be more than 3s earlier than the closing time of J1, so as to ensure that airflow flows over the surface of the lamp when the xenon excimer light source lamp is lit.

[0032] The design of a one-fluid nozzle parallel / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is characterized in that two venturi tubes are required.

[0033] Embodiment 4 A design of a one-fluid nozzle series / air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer.

[0034] Figure 4 It is a schematic diagram of a fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector, in which 1 is active oxygen cluster hydrogen peroxide micro-mist (dry mist); 6 is a gas pressure gauge; 7 is an air pressure tank; 8 is an active oxygen cluster (ozone) excitation cabin of a centralized transmission type xenon excimer active oxygen cluster (ozone) generator; Xe is a xenon excimer lamp; 12 is a peristaltic pump; 13 is a liquid container tank; 14 is water or hydrogen peroxide (0.5%-7.5%); 15 is a gas regulating valve; G solid line represents a gas pipeline; W double line represents a liquid pipeline; J1 gas solenoid valve 1; J2 gas solenoid valve 2; DA: air pump A; 16 is a venturi tube 2; 17 is the inlet end of the venturi tube 2; 18 is the negative pressure inlet end of the venturi tube 2; 21 is a fluid nozzle.

[0035] Its working principle is as follows: the first step is to store high-pressure gas in the air pressure tank: J1 gas solenoid valve 1 is closed, J2 gas solenoid valve 2 is turned on, DA (air pump A) is started to fill air into the air pressure tank (7), and when the pressure in the air pressure tank (7) reaches the set value (should be greater than> 0.15MPa), J2 is closed and DA (air pump A) is turned off. At this time, the air pressure tank (7) maintains the air pressure and air storage volume required for injection; the second step is to prepare the high-pressure and high-speed airflow of active oxygen clusters: J1 is turned on, and the gas in the air pressure tank (7) will enter the collection After the active oxygen cluster excitation chamber (8) of the central transmission type xenon excimer active oxygen cluster generator, a high-pressure and high-speed active oxygen cluster airflow is generated around the lamp tube (Xe) of the xenon excimer light source. The high-pressure and high-speed active oxygen cluster airflow flowing out of the active oxygen cluster excitation chamber (8) of the central transmission type xenon excimer active oxygen cluster generator enters the venturi tube 2 (16) through the gas regulating valve (15) and the inlet end (17) of the venturi tube 2. The concentration of active oxygen clusters in the high-pressure and high-speed active oxygen cluster airflow can be controlled by controlling the lighting time of the xenon excimer lamp tube (Xe). The third step is to supply hydrogen peroxide solution: the peristaltic pump (12) is started, and the hydrogen peroxide aqueous solution (14) in the liquid container tank (13) can be entered into the venturi tube 2 (16) through the negative pressure inlet end (18) of the venturi tube 2 (16); by adjusting the flow rate of the peristaltic pump (12), the amount of hydrogen peroxide aqueous solution pumped into the venturi tube 2 (16) can be changed. The fourth step is to spray a water vapor mist of hydrogen peroxide and active oxygen species: the hydrogen peroxide aqueous solution and the high-pressure and high-flow rate active oxygen species gas flow are combined in the venturi tube 2 (16) and then sprayed out through a fluid nozzle (21) to form an active oxygen species hydrogen peroxide mist (1).

[0036] In a fluid nozzle series / air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer, the control of the internal active electrical components is completed by an embedded MCU (microprocessor) digital circuit, wherein the main control parameters are the pressure of the air pressure tank, the lighting and shut-down time of the xenon excimer light source lamp (Xe), the peristaltic pump flow rate, and the steam mist spraying time: wherein the turn-on time of J1 should be more than 3s earlier than the lighting time of the xenon excimer light source lamp (Xe), and the shut-off time of the xenon excimer light source lamp (Xe) should be more than 3s earlier than the closing time of J1, so as to ensure that airflow flows over the surface of the lamp when the xenon excimer light source lamp is lit.

[0037] The design of a one-fluid nozzle series / air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is characterized by the need for a venturi tube.

[0038] Example 5 A xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer designed and manufactured using the two-fluid nozzle parallel / air pump type described in Example 1, using 1.5% and 3% hydrogen peroxide aqueous solution + a xenon excimer lamp (24W, on: off = 49s: 1s), the volume of 8m 3 The internal space of the ambulance was disinfected for 10 minutes and maintained for 10 minutes after spraying. The floating bacteria in the laboratory were sampled using a microbial air sampler with a sampling time of 36 minutes (1018.8L / time). The sampling time was 36 minutes. Nutrient agar culture plates were used and cultured at 36°C for 48 hours. The colony counts were performed. The experimental results are shown in the table below. It can be seen from the data in the table that a good disinfection effect was also achieved.

[0039] disinfecting Factor CFU before disinfection Temperature ℃ Humidity RH% Consumption ml CFU after disinfection 1.5% Hydrogen Peroxide + Xe (49s on, 1s off) *15-25-69-41-29-14＝192 7-7.2 **25-25.5 / 68-55 50 0 3% Hydrogen peroxide + Xe (on 49s: off 1s) *13-24-51-37-26-11＝162 7-7.2 **25-25.5 / 62-54 50 0

[0040] *The colony counts of each plate are 1#-2#-3#-4#-5#-63# respectively.

[0041] **Humidity variation range during sampling before disinfection / sampling after disinfection respectively.

[0042] The hydrogen peroxide mist sterilizers currently on the market basically use 7.5% hydrogen peroxide aqueous solution. The higher the concentration of hydrogen peroxide, the less conducive it is to the rapid degradation of hydrogen peroxide after disinfection.

[0043] It can be seen from the above two disinfection experiments that the xenon excimer active oxygen cluster generator technology, which is combined with the hydrogen peroxide micro-mist spraying technology to form a "xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector" design, can use 1.5% hydrogen peroxide aqueous solution and a smaller volume during use, and can still achieve the disinfection effect of 7.5% hydrogen peroxide aqueous solution. This shows that the active oxygen clusters and hydrogen peroxide aqueous solution generated by the xenon excimer light source to excite the air have a good synergistic disinfection effect, and because the spraying amount of hydrogen peroxide aqueous solution is greatly reduced, the environmental humidity of the space to be disinfected is effectively reduced. The sour smell of hydrogen peroxide in the car after disinfection is greatly reduced as the concentration of hydrogen peroxide decreases, especially when using 1.5% hydrogen peroxide solution in conjunction with a xenon excimer light source. The sour smell is lower, but a disinfection level close to terminal disinfection can still be achieved, which is worthy of further discussion and verification.

Claims

1. An air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer, characterized in that The centralized transmission type xenon excimer light source active oxygen cluster generator technology and the hydrogen peroxide micro-mist spraying technology are combined and applied to form the basic physical structure of an air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector. The basic structure is composed of a two-fluid nozzle or a one-fluid nozzle, a venturi tube, an active oxygen cluster excitation chamber of a centralized transmission type xenon excimer active oxygen cluster generator, a xenon excimer light source, a micro air pump, and / or a peristaltic pump or a micro liquid pump, a liquid container tank, an air pump, and / or an air pressure tank, and / or a gas pressure gauge, and / or a gas electronic valve, and / or a gas regulating valve as basic components. These components are reasonably connected to each other through liquid pipes and / or gas pipes to form the basic structure of the air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist disinfector.

2. According to claim 1, an air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer is characterized in that In the basic structure of the air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer, the use of a single-fluid nozzle requires one more venturi tube in the structure than the use of a two-fluid nozzle.

3. The air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer according to claim 1, characterized in that The disinfectant used is an aqueous solution of hydrogen peroxide, or a hydrogen peroxide silver ion disinfectant, or a hydrogen peroxide zinc ion disinfectant, or water.

4. The air pump type xenon excimer active oxygen cluster and hydrogen peroxide micro-mist sterilizer according to claim 1, characterized in that An embedded MCU digital control circuit is used to electrically control the active components in the xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer. The main control parameters include the lighting and extinguishing time of the xenon excimer light source lamp, the gas pressure of the air pressure tank, the flow rate of the peristaltic pump or micro liquid pump, and the control of the switching parameters of the air solenoid valve and the air pump. For the embedded MCU digital control circuit of the air pump type xenon excimer reactive oxygen cluster and hydrogen peroxide micro-mist sterilizer, it should be ensured that the start time of the air pump supplying air to the reactive oxygen cluster excitation chamber is not less than 3s earlier than the lighting time of the xenon excimer light source lamp.

Images