A rapid pulsed intense light sterilization and disinfection device and its control method

Abstract

The present invention relates to the technical field of health and safety equipment, and particularly relates to a rapid pulsed intense light sterilization and disinfection device and a control method thereof. The pulsed xenon lamp of the rapid pulsed intense light sterilization and disinfection device is located on the symmetry plane of the parabolic reflector, and the distance between the axis of the glass shell of the pulsed xenon lamp and the focus of the parabolic reflector is 0 to 2r, where r is the radius of the glass shell of the pulsed xenon lamp; the extended light-shielding cover surrounds the light outlet of the parabolic reflector and extends downward; the light-emitting direction indicator is installed inside the parabolic reflector and points to the light outlet of the parabolic reflector; the pulsed xenon lamp is electrically connected to the driving assembly and is controlled by the driving assembly, the ambient humidity detection assembly is communicatively connected to the driving assembly, the safety detection assembly is communicatively connected to the driving assembly, and the safety detection assembly is used to determine whether it is in a safe use state. It can perform rapid sterilization and disinfection treatment, is easy to operate, and is safe to use.

Description

Technical Field

[0001] The present invention relates to the technical field of health and safety equipment, and particularly to a rapid pulsed intense light sterilization and disinfection device and a control method thereof. Background Art

[0002] Deep ultraviolet light with a wavelength less than 280 nm can cause the coagulation and denaturation of biological proteins, the breakage of biological genetic material DNA or RNA, and further cause the death of microorganisms and the inactivation and desensitization of sensitizing proteins.

[0003] According to the types of killing objects, the required ultraviolet doses are also different. When the ultraviolet intensity is 30000 μW / cm 2 , the time required to kill viruses, bacteria, mold spores, algae and other microorganisms are 0.1 - 1.0 S, 1.0 - 8.0 S, 5.0 - 40.0 S respectively. The ultraviolet dose plays a crucial role in the sterilization process. The ultraviolet dose can be expressed as the product of the ultraviolet intensity and the irradiation time. When the dose is the same, high-intensity short-time or low-intensity long-time irradiation methods can be used to achieve the sterilization purpose. Under the condition of sufficient ultraviolet dose, inactivated viruses and bacteria will not revive, but when the ultraviolet dose is insufficient, many irradiated and inactivated viruses and bacteria can repair their damaged structures with the assistance of light. Therefore, the ultraviolet dose affects the ultraviolet sterilization effect.

[0004] In addition, relevant research shows that when the relative humidity of the air rises from 25% to 75%, the survival rate of bacteria increases from 6.4% to 24%. Generally, the relative humidity of 60% is usually used as the benchmark for evaluating the ultraviolet sterilization dose. When the humidity increases, due to the reduction of the sterilization effect, the ultraviolet dose should be increased accordingly. For example, when the indoor relative humidity is 70%, 80%, 90% respectively, to achieve the same sterilization effect, the ultraviolet dose needs to be increased by 50%, 80%, 90% respectively. The change of environmental humidity directly affects the microorganism killing efficiency, and it is necessary to adjust the ultraviolet dose according to the environmental humidity to meet the effective sterilization requirements. Therefore, the environmental humidity affects the ultraviolet sterilization effect.

[0005] Traditional ultraviolet sterilization uses low-pressure mercury lamps, which use the 253.7 nm ultraviolet wavelength generated by mercury element excitation for space irradiation sterilization. The sterilization time needs to last for several hours, the action time is slow, and humans and machines cannot coexist. At the same time, the time required for the low-pressure mercury lamp to start and reach stability is relatively long, generally several minutes, and it is greatly affected by the environmental temperature, has a fast life attenuation, and the mercury element it contains has the risk of fragmentation pollution and environmental impact problems in later scrapping treatment.

[0006] In the 1970s, the idea of using pulsed xenon lamps as surface sterilization equipment for food packaging materials was proposed. In 1984, a patent on pulsed xenon lamp sterilization technology was registered in the United States. In the following years, experiments on the sterilization of object surfaces using pulsed xenon lamp technology were gradually carried out. In the late 1990s, pulsed xenon lamp sterilization equipment was recognized by the food production management industry. Subsequently, pulsed xenon lamp sterilization technology began to be promoted to the food packaging field. At the same time, Japanese researchers developed the first pulsed xenon lamp sterilizer for the medical and health field. Since the 21st century, pulsed xenon lamp sterilization technology has also gradually shown good application prospects in medical treatment, water treatment, air sterilization, etc.

[0007] The pulsed xenon lamp device utilizes an inert gas lamp to emit intense pulsed flashes ranging from ultraviolet to infrared regions, with a spectrum similar to that of sunlight. The instantaneous intensity can reach thousands of times that of sunlight. The characteristics of pulsed intense light itself are high light radiation intensity, and at the same time, the pulsed xenon lamp emits a wide spectrum range, covering a spectrum of 100 - 1100 nm. Through reasonable design of the pulsed xenon lamp tube and adjustment of drive parameters, there are high peaks in the UV-C part (wavelength 200 - 280 nm), visible light part (wavelength 400 - 760 nm), and infrared part (wavelength 760 - 1000 nm). The visible light and infrared light output by the pulsed xenon lamp can also combine with high-energy pulsed intense light to kill microorganisms, that is, using the flash thermal effect to cause the inactivation of enzymes and other components of cells, and using the pulsed effect to damage cell walls and other components of cells, resulting in the death of bacteria. Therefore, the pulsed ultraviolet light and intense light emitted by pulsed xenon lamps have a different sterilization mechanism from ordinary ultraviolet light sterilization. In the sterilization process, not only does the photochemical effect play a leading role, but also the photothermal effect, and the sterilization process is more complex. There are mainly four ways to kill microorganisms: 1. Destroy the cell membrane of microorganisms; 2. Decompose the enzymes inside microorganisms; 3. Destroy the genetic material nucleic acid inside microbial cells; 4. The photothermal effect causes the expansion of microbial cells, resulting in cell rupture. Therefore, pulsed xenon lamps can kill microorganisms from multiple aspects and have good prospects in the field of sterilization and disinfection technology.

[0008] However, the instantaneous high-power ultraviolet radiation contained in pulsed intense light may also damage the eyes and skin, and cause the aging of polymer materials, manifested as yellowing, cracking, and a decrease in structural strength. Therefore, to apply pulsed ultraviolet light and intense light to rapid sterilization in a human-machine coexisting environment, the safety issues must be solved first, including: 1. Control of UVC leakage; 2. Possible direct light irradiation of the eyes caused by misoperation; 3. Control of the radiation dose of the damage to the surface of objects, especially the surface damage of polymer materials.

[0009] Chinese Patent Application for Invention No. 2017109567139 discloses a pulsed xenon lamp ultraviolet sterilizer, which uses a high-power pulsed xenon lamp, a lifting device and a microorganism detection device to sterilize a space. Essentially, it replaces the traditional low-pressure mercury lamp for pulsed space sterilization, but it cannot coexist with humans, that is, there should be no one nearby during use, and it is not convenient to carry.

[0010] In medical environments, such as hospital bed rails, call buttons, switches, tray tables, toilet seats, masks, shoes, etc., elevator switches, handrails in public places, door handles, faucets, lighting switches in homes, and daily necessities such as fruits, vegetables, bathroom products, cleaning supplies, etc. all need to be quickly and conveniently sterilized and disinfected frequently, which also puts forward the requirement of portability. The traditional disinfection water cleaning method is cumbersome and inefficient, and the traditional low-pressure mercury lamp takes a long time. The above methods cannot quickly sterilize and disinfect. Using a pulsed xenon lamp is a better solution, but the pulsed xenon lamp ultraviolet sterilizer in the prior art cannot coexist with humans, and it is not convenient to carry. Obviously, it cannot meet the requirements of frequent use and portability during the epidemic period of infectious diseases.

[0011] There is no sterilization and disinfection device based on a pulsed xenon lamp in the prior art that can coexist with humans, has high safety and is portable. Summary of the Invention

[0012] The purpose of the present invention is to provide a fast pulsed intense light sterilization and disinfection device that can coexist with humans, has high safety and is convenient to carry, and also provides a control method for such a fast pulsed intense light sterilization and disinfection device.

[0013] To achieve one of the above purposes, the present invention provides a fast pulsed intense light sterilization and disinfection device, which includes a parabolic reflector, a pulsed xenon lamp, a driving component, an extended light shield, an environmental humidity detection component, a safety detection component and a light emission direction indicator; the pulsed xenon lamp is located on the symmetry plane of the parabolic reflector, and the distance between the axis of the glass shell of the pulsed xenon lamp and the focus of the parabolic reflector is 0 to 2r, where r is the radius of the glass shell of the pulsed xenon lamp; the extended light shield surrounds the light outlet of the parabolic reflector and extends downward; the light emission direction indicator is installed inside the parabolic reflector and points to the light outlet of the parabolic reflector; the pulsed xenon lamp is electrically connected to the driving component and is controlled by the driving component, the environmental humidity detection component is communicatively connected to the driving component, the safety detection component is communicatively connected to the driving component, and the safety detection component is used to determine whether the fast pulsed intense light sterilization and disinfection device is in a set safe use state.

[0014] Further, the distance between the axis of the glass shell of the pulsed xenon lamp and the focus of the parabolic reflector is 0.5r to 2r.

[0015] Furthermore, a back - reflection mirror is arranged inside the parabolic mirror. The back - reflection mirror includes two downward - reflecting surfaces symmetrically arranged, and the mirror - surface included angle between the two downward - reflecting surfaces is 120° - 160°. The bottom width of the back - reflection mirror is 2r - 4r. The back - reflection mirror is located directly above the focus of the parabolic mirror, and the distance between the intersection point of the two downward - reflecting surfaces and the focus of the parabolic mirror is 1.5r - 6r. The surface of the back - reflection mirror is provided with a silica coating or an alumina coating.

[0016] Furthermore, a front - projection mirror is arranged inside the parabolic mirror. The front - projection mirror includes two upward - reflecting surfaces symmetrically arranged, and the mirror - surface included angle between the two upward - reflecting surfaces is 90° - 150°. The bottom width of the front - projection mirror is 2r - 5r. The front - projection mirror is located directly below the axis of the glass shell of the pulsed xenon lamp, and the distance between the intersection point of the two upward - reflecting surfaces and the axis of the glass shell is 1.5r - 6r. The surface of the front - projection mirror is provided with a silica coating or an alumina coating.

[0017] Furthermore, the light - emitting direction indicator emits a laser spot, the diameter of the laser spot is < 0.5r, and the luminous power is < 5mW. The light - emitting direction indicator is installed in the middle below the front - projection mirror and points to the center of the light - outlet of the parabolic mirror.

[0018] Furthermore, a light - guiding grid is arranged at the light - outlet of the parabolic mirror. The thickness of the light - guiding grid is 3r - 6r. The light - guiding grid is honeycomb - shaped, and the side length of the hexagon forming the honeycomb is 1.5mm - 5mm.

[0019] Furthermore, the extended light - shielding cover surrounds the light - guiding grid and extends downward and around for 10mm - 150mm. The material of the extended light - shielding cover is an ultraviolet - shielding material.

[0020] Furthermore, it also includes a connection determination contact. The connection determination contact is electrically connected to the drive assembly. The extended light - shielding cover is detachably installed on the light - guiding grid. When the extended light - shielding cover is installed on the light - guiding grid, the connection determination contact is triggered to close by the extended light - shielding cover.

[0021] Furthermore, it also includes a two - stage two - position non - self - locking start switch. The two - stage two - position non - self - locking start switch is electrically connected to the drive assembly.

[0022] Furthermore, the safety detection component includes an attitude sensor and a child lock. The attitude sensor and the child lock are respectively communicatively connected to the drive assembly.

[0023] To achieve the second of the above-mentioned objectives, the present invention provides a control method for the above-mentioned rapid pulsed intense light sterilization and disinfection device. Before the pulsed xenon lamp emits sterilization and disinfection light, the following steps are included: an ambient humidity detection step, in which the ambient humidity detection component detects the ambient humidity and transmits the humidity detection result to the drive component, and the drive component modulates the irradiation output dose of the pulsed xenon lamp according to the humidity detection result; a safety detection step, in which the safety detection component performs a safety detection and transmits the safety detection result to the drive component, and the drive component determines whether it is in a safe use state according to the safety detection result; if so, the pulsed xenon lamp can emit sterilization and disinfection light; if not, the pulsed xenon lamp cannot emit sterilization and disinfection light.

[0024] Further, the rapid pulsed intense light sterilization and disinfection device further includes a two-stage two-gear non-self-locking start switch, and the two-stage two-gear non-self-locking start switch is electrically connected to the drive component; when the two-stage two-gear non-self-locking start switch is pressed to the first stage, the safety detection step is started, and the light-emitting pointing indicator emits a laser spot; when the two-stage two-gear non-self-locking start switch is pressed to the second stage, the drive component determines whether the time interval between pressing to the first stage and pressing to the second stage is greater than a preset time interval; if so, the pulsed xenon lamp can emit sterilization and disinfection light; if not, the pulsed xenon lamp cannot emit sterilization and disinfection light.

[0025] Further, the safety detection component includes an attitude sensor and a child lock, and the attitude sensor and the child lock are respectively communicatively connected to the drive component; the safety detection step includes that the attitude sensor detects the tilt angle of the rapid pulsed intense light sterilization and disinfection device and sends the tilt angle to the drive component, and the drive component determines whether the tilt angle is within a preset range; if so, the pulsed xenon lamp can emit sterilization and disinfection light; if not, it enters the child lock judgment step. If the child lock is closed, the pulsed xenon lamp can emit sterilization and disinfection light. If the child lock is open, the pulsed xenon lamp cannot emit sterilization and disinfection light.

[0026] Further, the rapid pulsed intense light sterilization and disinfection device further includes a mode switching component, and the mode switching component is communicatively connected to the drive component; before the pulsed xenon lamp emits sterilization and disinfection light, a mode switching step is further included, including Mode 1, Mode 2, and Mode 3; under Mode 1, the total output energy in the UV-C band is 10mJ / cm 2 ~40mJ / cm 2 ; under Mode 2, the total output energy in the UV-C band is 30mJ / cm 2 ~70mJ / cm 2; Under the third mode, the total output energy in the UV-C band is 50 mJ / cm 2 ~120 mJ / cm 2 .

[0027] A rapid pulsed intense light sterilization and disinfection device provided by the present invention uses a pulsed xenon lamp to emit sterilization and disinfection light, reflects the light through a parabolic reflector, and makes the light emit from the light outlet of the parabolic reflector. The light source utilization rate is high and the distribution is uniform. An extended light-shielding cover is provided at the light outlet. During subsequent use, the area to be sterilized and disinfected is covered by the extended light-shielding cover. Based on the combined effect of pulsed ultraviolet light and intense light, rapid sterilization and disinfection can be achieved, and its structural setting has the advantage of being easy to carry; by setting an environmental humidity detection component, the ultraviolet dose can be adjusted according to the environmental humidity to improve the stability of sterilization and disinfection; by setting a safety detection component, it is used to determine whether the rapid pulsed intense light sterilization and disinfection device is in a set safe use state. After meeting the requirements of the safe use state, the pulsed xenon lamp can emit sterilization and disinfection light, which has high safety. In addition, a light-emitting direction indicator is set to indicate the sterilization and disinfection area, which is convenient for operation. Therefore, compared with the prior art, this rapid pulsed intense light sterilization and disinfection device has the advantages of being able to coexist with humans, having high safety and being easy to carry. The control method based on the above rapid pulsed intense light sterilization and disinfection device provided by the present invention can improve the stability and safety of sterilization and disinfection. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the rapid pulsed intense light sterilization and disinfection device of the present invention;

[0029] Figure 2 is a schematic diagram of the light direction;

[0030] Figure 3 is a schematic diagram of the positional relationship between the pulsed xenon lamp and each reflector;

[0031] Figure 4 is a schematic side view structural diagram of the rapid pulsed intense light sterilization and disinfection device of the present invention when provided with a housing and other accessories;

[0032] Figure 5 is a schematic bottom view structural diagram of the rapid pulsed intense light sterilization and disinfection device of the present invention.

[0033]

Description of the Reference Numerals

[0034] 11 - parabolic reflector, 111 - focus, 112 - light outlet, 12 - back reflection mirror, 13 - front reflection mirror, 14 - light guide grating;

[0035] 2 - pulsed xenon lamp, 21 - drive component;

[0036] 3 - Extended light shield;

[0037] 4 - Ambient humidity detection component;

[0038] 5 - Connection determination contact;

[0039] 6 - Mode switching component;

[0040] 7 - Two - stage two - gear non - self - locking start switch;

[0041] 81 - Housing, 82 - Rechargeable power source;

[0042] 9 - Light - emitting pointing indicator. Detailed implementation mode

[0043] The present invention will be described in detail below in conjunction with specific embodiments.

[0044] In the present invention, when orientation words appear, for the orientation words, it is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention. In the present invention, unless otherwise clearly specified and limited, when terms such as "set on", "connected", "linked" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and can be connected through the inside of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Rapid pulsed intense light sterilization and disinfection device

[0046] The present invention provides a rapid pulsed intense light sterilization and disinfection device, as Figure 1 and Figure 2 shown, which includes a parabolic reflector 11, a pulsed xenon lamp 2, a driving component 21 (the driving component 21 can be a separate control module as Figure 4 and Figure 5 shown, or can be integrated on the pulsed xenon lamp 2), an extended light shield 3, an ambient humidity detection component 4 and a safety detection component; the pulsed xenon lamp 2 is located on the symmetry plane of the parabolic reflector, and the distance between the axis of the glass shell of the pulsed xenon lamp 2 and the focus 111 of the parabolic reflector is 0 - 2r, where r is the radius of the glass shell of the pulsed xenon lamp 2.

[0047] The extended light-shielding cover 3 surrounds the light-emitting port 112 of the parabolic mirror 11 and extends downward. Preferably, it also extends in all directions. The extended light-shielding cover 3 can be set to have a flexible structure at least at the bottom. The flexible structure is beneficial for the periphery of the extended light-shielding cover 3 to closely adhere to the area to be sterilized and disinfected, so as to prevent ultraviolet leakage. The extended light-shielding cover 3 can be made entirely of flexible material, or can include a body and a bottom, where the upper part of the body is made of a rigid material and the bottom is made of a flexible material. Of course, the extended light-shielding cover 3 can also be made of a rigid material.

[0048] The light-emitting direction indicator 9 is installed inside the parabolic mirror 11 and points to the light-emitting port of the parabolic mirror 11.

[0049] The pulsed xenon lamp 2 is electrically connected to the driving component 21 and controlled by the driving component 21. The ambient humidity detection component 4 is communicatively connected to the driving component 21, and the safety detection component is communicatively connected to the driving component 21. The safety detection component is used to detect whether the rapid pulsed intense light sterilization and disinfection device is in a set safe use state.

[0050] Based on the above structure, a rapid pulsed intense light sterilization and disinfection device provided by the present invention uses a pulsed xenon lamp 2 to emit sterilization and disinfection light, reflects the light through the parabolic mirror 11, and makes the light emit from the light-emitting port 112 of the parabolic mirror 11, with a high degree of aggregation. An extended light-shielding cover 3 is provided at the light-emitting port 112. During use, the area to be sterilized and disinfected is covered by the extended light-shielding cover 3. Based on the combined effect of pulsed ultraviolet rays and intense light, rapid sterilization and disinfection can be achieved, and its structural setting has the advantage of being easy to carry. By setting the ambient humidity detection component 4, the ultraviolet dose can be adjusted according to the ambient humidity to improve the stability of sterilization and disinfection. By setting the safety detection component, it is used to determine whether the rapid pulsed intense light sterilization and disinfection device is in a set safe use state. After meeting the requirements of the safe use state, the pulsed xenon lamp 2 can emit sterilization and disinfection light, which has high safety. In addition, a light-emitting direction indicator 9 is provided to indicate the sterilization and disinfection area, which is convenient for operation. Therefore, compared with the prior art, this rapid pulsed intense light sterilization and disinfection device has the advantages of being able to coexist with humans, having high safety and being easy to carry.

[0051] In this embodiment, the parabolic mirror 11 forms a condenser cover to shape the light. The width of the light-emitting port 112 is 20r - 50r, and the height of the parabolic mirror 11 is 12r - 36r.

[0052] In this embodiment, the distance between the axis of the glass shell of the pulsed xenon lamp 2 and the focus 111 of the parabolic reflector is 0.5r to 2r. Based on the above structural arrangement, the light emitted by the pulsed xenon lamp 2 is inclined at a certain angle after being reflected by the parabolic reflector 11, and part of the light is reflected and emitted by the lower light guide grating 14. The purpose is to reduce the light intensity entering the eyes when the eyes look into the parabolic reflector 11 through the light guide grating 14 under specific circumstances, reduce the damage, and at the same time, through the reflection of the light guide grating 14, improve the uniformity of the light intensity distribution. Of course, the axis of the glass shell of the pulsed xenon lamp 2 can also be arranged to coincide with the focus 111 of the parabolic reflector 11 to reflect the light in parallel.

[0053] In this embodiment, a back-reflection mirror 12 is arranged inside the parabolic reflector 11. The back-reflection mirror 12 includes two downward-reflecting surfaces symmetrically arranged, and the mirror angle between the two downward-reflecting surfaces is 120° to 160°. The bottom width of the back-reflection mirror 12 is 2r to 4r; the back-reflection mirror 12 is located directly above the focus 111 of the parabolic reflector 11, and the distance between the intersection point of the two downward-reflecting surfaces and the focus 111 of the parabolic reflector 11 is 1.5r to 6r; a silicon dioxide coating or an aluminum oxide coating is arranged on the surface of the back-reflection mirror 12. Based on the above structural arrangement, the back-reflected light of the pulsed xenon lamp 2 can be reflected and separated left and right, and after being reflected twice by the parabolic reflector 11, it enters the light guide grating 14, improving the light source utilization rate.

[0054] In this embodiment, a front-reflection mirror 13 is arranged inside the parabolic reflector 11. The front-reflection mirror 13 includes two upward-reflecting surfaces symmetrically arranged, and the mirror angle between the two upward-reflecting surfaces is 90° to 150°. The bottom width of the front-reflection mirror 13 is 2r to 5r; the front-reflection mirror is located directly below the axis of the glass shell of the pulsed xenon lamp 2, and the distance between the intersection point of the two upward-reflecting surfaces and the axis of the glass shell is 1.5r to 6r; a silicon dioxide coating or an aluminum oxide coating is arranged on the surface of the front-reflection mirror 13. Based on the above structural arrangement, the front-reflection mirror 13 avoids the direct outward emission of the light of the pulsed xenon lamp 2, resulting in excessive local light intensity, and also avoids the light directly entering the human eyes and causing damage under specific circumstances.

[0055] Through the design of the structures and positions of the above-mentioned parabolic reflector 11, back-reflection mirror 12, and front-reflection mirror 13, the rapid pulsed high-intensity light sterilization and disinfection device of the present invention can obtain an optical path structure with the maximum light intensity and the most uniform distribution at the light outlet 112. When the naked eye observes the inside of the light guide grating 14 at any angle, the visible glass shell area of the pulsed xenon lamp 2 is <20%, reducing accidental ultraviolet damage while obtaining an efficient optical path structure.

[0056] The above-mentioned parabolic mirror 11, back-reflecting mirror 12 and front-projecting mirror 13 are preferably made of polished aluminum metal and coated with a silica coating or an aluminum oxide coating, which has good reflection efficiency, improves wear and corrosion resistance, and extends the service life.

[0057] In this embodiment, a light guide grating 14 is provided at the light outlet 112 of the parabolic mirror 11. The thickness of the light guide grating 14 is 3r - 6r. The light guide grating 14 is honeycomb-shaped, and the side length of the honeycomb-shaped hexagon is 1.5 mm - 5 mm. The light guide grating 14 can limit stray light, avoid lateral leakage, and protect the optical path structure. Preferably, the material of the light guide grating 14 is aluminum. Preferably, anodizing or coating a black light-absorbing material on a specific area of the light guide grating 14 can further reduce the light scattering at the light outlet 112. The above-mentioned specific area refers to the area with a thickness of 1 - 2 times the side length (the side length refers to the side length of the honeycomb-shaped hexagon) from the bottom of the light guide grating 14.

[0058] In this embodiment, the extended light shield 3 is a flexible telescopic structure. The material of the extended light shield 3 is an ultraviolet shielding material. The inner surface of the extended light shield 3 is provided with a corner reflection structure and a reflective coating.

[0059] In this embodiment, a mode switching component 6 is further included. The mode switching component 6 is communicatively connected to the driving component 21. The preset ultraviolet dose is adjusted through the mode switching component 6.

[0060] In this embodiment, a two-stage two-gear non-self-locking start switch 7 is further included. The two-stage two-gear non-self-locking start switch 7 is electrically connected to the driving component 21. By setting the two-stage two-gear non-self-locking start switch 7, pre-operation prompts and starting sterilization and disinfection are carried out, similar to the shutter operation of a camera. That is, when the user presses to the first stage, humidity detection, safe use status detection, and the light-emitting pointing indicator emits a laser spot to display the sterilization and disinfection area, etc. When the user presses to the second stage, the pulsed xenon lamp 2 performs a sterilization and disinfection operation according to the preset mode. The pulsed xenon lamp 2 emits an appropriate ultraviolet dose within a specific time and then automatically stops working, which is convenient to use and has high safety. When the user releases the press on the second stage during use, the circuit immediately turns off the light source to ensure safety in case of an accident.

[0061] During use, based on the setting of the two-stage two-gear non-self-locking start switch 7, the following control methods can be added to the control method of the fast-pulse high-intensity light sterilization and disinfection device: When the two-stage two-gear non-self-locking start switch 7 is pressed to the second stage, the drive assembly 21 determines whether the time interval between pressing to the first stage and pressing to the second stage is greater than a preset time interval. For example, the set time interval is 1 s; if so, the pulsed xenon lamp 2 can emit sterilization and disinfection light; if not, the pulsed xenon lamp 2 cannot emit sterilization and disinfection light. The set time interval here is to allow the fast-pulse high-intensity light sterilization and disinfection device to have sufficient time to perform the safety detection step, or have sufficient time to perform the humidity detection step or the step of the light-emitting pointing indicator displaying the sterilization and disinfection area, preventing the user from pressing too quickly and skipping the safety detection step to emit the sterilization and disinfection light, bringing usage risks. When the time interval between pressing to the first stage and pressing to the second stage is less than the preset time interval, an alarm is triggered to remind the user to avoid misoperation by children or users who have not read the operation instructions.

[0062] In this embodiment, the light-emitting pointing indicator 9 emits a laser spot, the diameter of the laser spot is <0.5r, and the luminous power is <5 mW; the light-emitting pointing indicator 9 is installed in the middle below the front projection reflector 13 and points to the center of the light outlet of the parabolic reflector 11.

[0063] In this embodiment, the extended light-shielding cover 3 surrounds the light guide grille 14 and extends downward and around for 10 mm to 150 mm, and the material of the extended light-shielding cover 3 is an ultraviolet shielding material.

[0064] In practical applications, the safety component can have many forms, or a combination of more than one form to maximize safety. The following lists the forms of the safety component, but since there are still many similar replacement methods in the prior art, an exhaustive list is not made, and similar replacements should also fall within the protection scope of the present invention.

[0065] Connection determination contact detection: By setting a connection determination contact 5 on the parabolic reflector 11 or the housing 81, the connection determination contact 5 is electrically connected to the drive assembly 21, and the extended light-shielding cover 3 is detachably installed on the parabolic reflector 11. When the extended light-shielding cover 3 is installed on the parabolic reflector 11 or the housing 81, the connection determination contact 5 is triggered to close by the installation of the extended light-shielding cover 3. In this way, during transportation, storage or use, when the extended light-shielding cover 3 is not installed, the connection determination contact 5 is in an open state, and at this time, no matter what operation is performed, the pulsed xenon lamp 2 cannot emit sterilization and disinfection light; after the extended light-shielding cover 3 is installed and in place, the extended light-shielding cover 3 triggers the connection determination contact 5 to close, and then the pulsed xenon lamp 2 can emit sterilization and disinfection light, with higher safety.

[0066] Posture Detection: The safety detection component includes a posture sensor, which is communicatively connected to the driving component 21. The posture sensor can be used to determine whether the entire rapid pulsed intense light sterilization and disinfection device is in a vertical state, and to determine whether the entire rapid pulsed intense light sterilization and disinfection device is skewed. When the requirements for the safe use state have been met, the rapid pulsed intense light sterilization and disinfection device should not be skewed or the skewed angle should be within a very small range, which can be set to plus or minus 30°. When the tilt angle is within plus or minus 30°, the pulsed xenon lamp 2 can emit sterilization and disinfection light. Therefore, it is possible to determine whether the requirements for the safe use state have been met through the posture sensor. Of course, a child lock can also be configured. For example, when it is required that the rapid pulsed intense light sterilization and disinfection device operates in a horizontal state, the detection step of the posture sensor can be skipped through the control of the child lock. That is, after the child lock is closed, the rapid pulsed intense light sterilization and disinfection device can make the pulsed xenon lamp 2 emit sterilization and disinfection light in multiple postures.

[0067] Photosensitive Detection: The safety detection component includes a pre-emission light source and a photosensitive sensor. The pre-emission light source is arranged inside the extended light-shielding cover 3, and the photosensitive sensor is arranged outside the extended light-shielding cover 3 and is communicatively connected to the driving component 21. By emitting a test light inside the extended light-shielding cover 3 and detecting the test light outside the extended light-shielding cover 3, it is determined whether the extended light-shielding cover 3 meets the covering requirements. When the extended light-shielding cover 3 is a flexible telescopic structure, the photosensitive sensor can also be used alone. By arranging the photosensitive sensor at the folding part of the extended light-shielding cover 3, when the extended light-shielding cover 3 is compressed in place, it can be considered that the extended light-shielding cover 3 has met the covering requirements. Since the extended light-shielding cover 3 is compressed and folded, the photosensitive sensor should be blocked. Therefore, it is possible to determine whether the requirements are met by whether the photosensitive sensor receives external light, which is also a way of detecting the safe use state.

[0068] Stroke Detection: As Figure 4 shown, when the extended light-shielding cover 3 is a flexible telescopic structure, the safety detection component includes a travel switch, which is electrically connected to the driving component 21. The travel switch is located beside the extended light-shielding cover 3 and extends downward. After the extended light-shielding cover 3 is compressed, the travel switch is triggered. When the extended light-shielding cover 3 is compressed in place, it can be considered that the extended light-shielding cover 3 has met the covering requirements. At the same time, the travel switch located beside the extended light-shielding cover 3 should be triggered. Therefore, it is also a way of detecting the safe use state to determine whether the covering requirements are met by whether the travel switch is triggered.

[0069] Alternatively, a pyroelectric infrared sensor for the human body can also be used. The human body infrared sensor is installed inside the extended light-shielding cover 3. When the human body infrared sensor inside detects the pyroelectric infrared rays of the human body with a wavelength of about 10 μm, subsequent operations need to be carried out in cooperation with other safety guarantee methods, and other safety guarantee methods include setting a button switch, a key switch, a fingerprint lock, etc.

[0070] The above safety measures can be used selectively or more than one at the same time, and the judgment order can be reordered according to actual needs.

[0071] In practical applications, such as Figure 4 and Figure 5 As shown, a housing 81 can be added, and some components can be installed on the housing 81. A handle can also be provided on the housing for convenient carrying and operation. Of course, the housing can also not be provided, and all components can be installed on the parabolic mirror 11. In addition, a rechargeable power supply 82 can be added to supply power to various electrical components to further improve portability. Of course, an external power cord can also be used for power supply. At the same time, an alarm can also be added. When it is detected that the requirements for the safe use state are not met, the driving component 21 controls the alarm to give an alarm.

[0072] In summary, this kind of rapid pulsed intense light sterilization and disinfection device can be used for rapid sterilization and disinfection treatment of frequently contacted parts such as medical treatment, property management, and families, with simple operation and safe use.

[0073] Control Method

[0074] The present invention provides a control method for the above rapid pulsed intense light sterilization and disinfection device. Before the pulsed xenon lamp emits sterilization and disinfection light, it includes the following steps:

[0075] An ambient humidity detection step, where the ambient humidity detection component detects the ambient humidity and transmits the humidity detection result to the driving component, and the driving component modulates the radiation output dose of the pulsed xenon lamp according to the humidity detection result.

[0076] A safety detection step, where the safety detection component conducts a safety detection and transmits the safety detection result to the driving component, and the driving component determines whether it is in a safe use state according to the safety detection result; if so, the pulsed xenon lamp can emit sterilization and disinfection light; if not, the pulsed xenon lamp cannot emit sterilization and disinfection light. Of course, when the sterilization and disinfection light cannot be emitted, an alarm can be issued for reminder.

[0077] In this embodiment, the safety detection component includes a pre-emission light source and a photosensitive sensor. The pre-emission light source is arranged inside the extended light-shielding cover, and the photosensitive sensor is arranged outside the extended light-shielding cover and is communicatively connected to the driving component. The safety detection step includes: the pre-emission light source emits a test light beam, the photosensitive sensor detects the intensity of the test light beam and transmits the light intensity detection result to the driving component, and the driving component determines whether it is in a safe use state according to the light intensity detection result. If so, the pulsed xenon lamp can emit germicidal and disinfecting light rays; if not, the pulsed xenon lamp cannot emit germicidal and disinfecting light rays. Preferably, the pre-emission light source is a pulsed xenon lamp. In the safety detection step, the driving component controls the pulsed xenon lamp to pre-ignite to emit the test light beam, that is, by reasonably controlling the pulsed xenon lamp to emit the test light beam in a specific form, a separate pre-emission light source does not need to be installed.

[0078] In this embodiment, the safety detection component includes an attitude sensor and a child lock. The attitude sensor and the child lock are respectively communicatively connected to the driving component. The safety detection step includes: the attitude sensor detects the tilt angle of the rapid pulsed intense light germicidal and disinfecting device and sends the tilt angle to the driving component, and the driving component determines whether the tilt angle is within a preset range. If so, the pulsed xenon lamp can emit germicidal and disinfecting light rays; if not, it enters the child lock judgment step. If the child lock is closed, the pulsed xenon lamp can emit germicidal and disinfecting light rays. If the child lock is open, the pulsed xenon lamp cannot emit germicidal and disinfecting light rays.

[0079] The above safety detection steps can be used selectively or more than one can be used simultaneously, and the judgment order can be reordered according to actual needs.

[0080] In this embodiment, the rapid pulsed intense light germicidal and disinfecting device further includes a mode switching component. The mode switching component is communicatively connected to the driving component. Before the pulsed xenon lamp emits germicidal and disinfecting light rays, it further includes a mode switching step, including Mode 1, Mode 2, and Mode 3. In Mode 1, the total output energy in the UV-C band is 10 mJ / cm 2 ~40 mJ / cm 2 ; in Mode 2, the total output energy in the UV-C band is 30 mJ / cm 2 ~70 mJ / cm 2 ; in Mode 3, the total output energy in the UV-C band is 50 mJ / cm 2 ~120 mJ / cm 2 . Specifically, for different killing requirements, the following settings can be made:

[0081] Mode 1 is for killing bacteria and viruses. The preset standard for the total output energy in the UV-C band is 30 mJ / cm 2 , and in actual use, it is corrected by multiplying the humidity detection result by a coefficient as the adjusted final output energy.

[0082] Mode 2 is used to kill fungi and molds. The preset standard for the total output energy in the UV-C band is 50 mJ / cm 2 , and during actual use, it is corrected by multiplying the humidity detection result by a coefficient as the adjusted final output energy.

[0083] Mode 3 is used to kill stubborn fungi and algae. The preset standard for the total output energy in the UV-C band is 100 mJ / cm 2 , and during actual use, it is corrected by multiplying the humidity detection result by a coefficient as the adjusted final output energy.

[0084] In summary, based on the control method provided by the present invention, the working steps of the fast pulsed intense light sterilization and disinfection device are as follows:

[0085] 1. Manually switch the mode according to the sterilization environment;

[0086] 2. Press and hold the first section of the two-stage two-gear non-locking start switch;

[0087] 3. Automatically adjust the ultraviolet dose by the driving component according to the environmental humidity and mode;

[0088] 4. The safety detection module detects whether it is in a safe use state;

[0089] 5. Start the light-emitting pointing indicator to emit a laser spot to display the sterilization and disinfection area;

[0090] 6. Cover the fast pulsed intense light sterilization and disinfection device over the area to be sterilized and disinfected;

[0091] 7. Press and hold the second section of the two-stage two-gear non-locking start switch;

[0092] 8. Start the pulsed xenon lamp to emit sterilization and disinfection light rays.

[0093] The control method provided by the present invention based on the above fast pulsed intense light sterilization and disinfection device can improve the stability and safety of sterilization and disinfection.

[0094] It should be noted that in order to implement the above functions and control methods, the driving component provided by the present invention should be provided with control required modules such as a program storage module, a processor, and a program execution module. According to the content disclosed in the present invention, those skilled in the art know which modules and programming methods to use to implement the above functions and control methods, so it will not be elaborated in this application.

[0095] Without conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A rapid pulsed intense light sterilization and disinfection device, characterized in that: It includes a parabolic reflector, a pulsed xenon lamp, a drive component, an extended light shield, an ambient humidity detection component, a safety detection component, and a light emission direction indicator; The pulsed xenon lamp is located on the symmetry plane of the parabolic reflector. The distance between the axis of the lamp bulb of the pulsed xenon lamp and the focus of the parabolic reflector is 0.5r to 2r, where r is the radius of the lamp bulb of the pulsed xenon lamp; the extended light shield surrounds the light outlet of the parabolic reflector and extends downward; the light emission direction indicator is installed inside the parabolic reflector and points to the light outlet of the parabolic reflector; The pulsed xenon lamp is electrically connected to the drive component and controlled by the drive component. The ambient humidity detection component is communicatively connected to the drive component, and the safety detection component is communicatively connected to the drive component. The safety detection component is used to determine whether the rapid pulsed intense light sterilization and disinfection device is in a set safe use state; A front reflection mirror is arranged inside the parabolic reflector. The front reflection mirror includes two upward reflection surfaces symmetrically arranged, and the mirror surface angle between the two upward reflection surfaces is 90° to 150°. The bottom width of the front reflection mirror is 2r to 5r; the front reflection mirror is located directly below the axis of the lamp bulb of the pulsed xenon lamp, and the distance between the intersection point of the two upward reflection surfaces and the axis of the lamp bulb is 1.5r to 6r; The light emission direction indicator emits a laser spot. The diameter of the laser spot is <0.5r, and the light emission power is <5mW; the light emission direction indicator is installed in the middle below the front reflection mirror and points to the center of the light outlet of the parabolic reflector.

2. The rapid pulsed intense light sterilization and disinfection device according to claim 1, wherein: A back reflection mirror is arranged inside the parabolic reflector. The back reflection mirror includes two downward reflection surfaces symmetrically arranged, and the mirror surface angle between the two downward reflection surfaces is 120° to 160°. The bottom width of the back reflection mirror is 2r to 4r; The back reflection mirror is located directly above the focus of the parabolic reflector, and the distance between the intersection point of the two downward reflection surfaces and the focus of the parabolic reflector is 1.5r to 6r; The surface of the back reflection mirror is provided with a silicon dioxide coating or an aluminum oxide coating.

3. The rapid pulsed intense light sterilization and disinfection device according to claim 1, wherein: The surface of the front reflection mirror is provided with a silicon dioxide coating or an aluminum oxide coating.

4. The rapid pulsed intense light sterilization and disinfection device according to claim 1, wherein: A light guide grating is arranged at the light outlet of the parabolic reflector. The thickness of the light guide grating is 3r to 6r. The light guide grating is honeycomb-shaped, and the side length of the hexagon forming the honeycomb shape is 1.5 mm to 5 mm.

5. The rapid pulsed intense light sterilization and disinfection device according to claim 4, characterized in that: The extended light shield surrounds the periphery of the light guide grating and extends downward and radially outward by 10 mm to 150 mm. The material of the extended light shield is an ultraviolet shielding material.

6. The rapid pulsed intense light sterilization and disinfection device according to claim 5, characterized in that: It further includes a connection determination contact, which is electrically connected to the driving component. The extended light-shielding cover is detachably mounted on the light guide grille. When the extended light-shielding cover is mounted on the light guide grille, the connection determination contact is triggered to close by the extended light-shielding cover.

7. A control method for a rapid pulsed intense light sterilization and disinfection device according to any one of claims 1 to 6, characterized in that, Before the pulsed xenon lamp emits sterilizing and disinfecting light, the following steps are included: An ambient humidity detection step, where the ambient humidity detection component detects the ambient humidity and transmits the humidity detection result to the driving component, and the driving component modulates the irradiation output dose of the pulsed xenon lamp according to the humidity detection result; A safety detection step, where the safety detection component conducts a safety detection and transmits the safety detection result to the driving component, and the driving component determines whether it is in a safe use state according to the safety detection result; if so, the pulsed xenon lamp can emit sterilizing and disinfecting light; if not, the pulsed xenon lamp cannot emit sterilizing and disinfecting light.

8. The control method according to claim 7, wherein: The rapid pulsed intense light sterilizing and disinfecting device further includes a two-stage two-gear non-self-locking start switch, which is electrically connected to the driving component; When the two-stage two-gear non-self-locking start switch is pressed to the first stage, the safety detection step is started, and the light-emitting pointing indicator emits a laser spot; When the two-stage two-gear non-self-locking start switch is pressed to the second stage, the driving component determines whether the time interval between pressing to the first stage and pressing to the second stage is greater than a preset time interval; If so, the pulsed xenon lamp can emit sterilizing and disinfecting light; If not, the pulsed xenon lamp cannot emit sterilizing and disinfecting light.

9. The control method according to claim 7, wherein: The safety detection component includes an attitude sensor and a child lock, and the attitude sensor and the child lock are respectively communicatively connected to the driving component; The safety detection step includes that the attitude sensor detects the tilt angle of the rapid pulsed intense light sterilizing and disinfecting device and sends the tilt angle to the driving component, and the driving component determines whether the tilt angle is within a preset range; If so, the pulsed xenon lamp can emit sterilizing and disinfecting light; If not, it enters the child lock judgment step. If the child lock is closed, the pulsed xenon lamp can emit sterilizing and disinfecting light. If the child lock is open, the pulsed xenon lamp cannot emit sterilizing and disinfecting light.

10. The control method according to claim 7, wherein: The rapid pulsed intense light sterilizing and disinfecting device further includes a mode switching component, which is communicatively connected to the driving component; Before the pulsed xenon lamp emits sterilizing and disinfecting light, it further includes a mode switching step, including Mode 1, Mode 2, and Mode 3; Under the first mode, the total output energy in the UV-C band is 10 mJ / cm 2 ~40 mJ / cm 2 ; Under the second mode, the total output energy in the UV-C band is 30 mJ / cm 2 ~70 mJ / cm 2 ; Under the third mode, the total output energy in the UV-C band is 50 mJ / cm 2 ~120 mJ / cm 2 .

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