CN111282012A - Human-machine coexistence UV lamp irradiation system for air sterilization in upper space - Google Patents

Abstract

The invention discloses a human-machine coexistence ultraviolet lamp irradiation system for air sterilization in the upper layer of the space, which is characterized in that it comprises a sterilization device arranged on the wall of a closed or semi-enclosed space, and the sterilization device includes a mercury lamp and a sterilization device. The irradiation angle controller, the mercury lamp tube is installed in the parabolic reflective lampshade; the irradiation angle controller drives the reflective lampshade to rotate to adjust the radiation angle of the mercury lamp tube. The sterilization equipment of the present invention is easy to adjust the radiation angle to provide radiation fields suitable for various ceiling heights, and can be applied to places with higher floor heights, such as fitness, sports venues, or indoor performances. It can also be used in rooms with relatively low ceilings, such as elevators and public transportation, rooms, office buildings, halls, etc.

Description

Human-machine coexistence UV lamp irradiation system for air sterilization in upper space

technical field

The invention relates to the technical field of sterilization equipment, in particular to a human-machine coexistence ultraviolet lamp irradiation system for sterilization of upper air in space.

Background technique

Ultraviolet rays are usually divided into three categories according to their wavelengths: long-wave ultraviolet rays with wavelengths of 315nm to 380nm are referred to as UVA, medium wave ultraviolet rays with wavelengths of 280nm to 315nm are referred to as UVB, and short wave ultraviolet rays with wavelengths of 200nm to 280nm are referred to as UVC. At present, most of the ultraviolet disinfection lamps on the market use UVC ultraviolet rays to achieve disinfection and sterilization. Ultraviolet light can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsia and mycoplasma, etc., with a broad spectrum. The sterilization mechanism of ultraviolet light includes destroying genetic material, affecting enzyme activity, and destroying proteins, resulting in the death of bacteria, viruses, and microorganisms. The advantages of UV bacteria disinfection include:

1) Physical destruction process without chemical agents;

2) Not affected by chemical equilibrium conditions such as temperature, concentration, activity;

3) Non-toxic, no residue, no peculiar smell;

4) The cell wall and viral protein coat cannot be blocked;

5) Cause uniform damage to DNA and RNA, no need to replace medicines, and no need to use combination medicines;

6) Especially suitable for air, water and surface disinfection.

There are many scenarios in which ultraviolet bacteria disinfection can be used. Generally speaking, it is divided into three categories: air sterilization, water sterilization and surface sterilization. Mainly airborne pathogenic microorganisms, such as influenza virus (flu), rhinovirus (common cold) and more dangerous pathogens (tuberculosis), are responsible for many diseases. Mold and spores can also lodge within heating, ventilation and air conditioning (HVAC) building structural systems, causing many diseases. Such as building-related illness (BRI). To reduce the incidence of disease, air disinfection systems can be installed inside air conditioners, air purifiers and consumer equipment. Deep UV LEDs can be installed in filtration systems in the ventilation ducts of household HVAC systems, humidifier tanks, and in small portable consumer devices. Since deep ultraviolet wavelengths can penetrate the air to kill bacteria carried in the air, deep ultraviolet rays have a strong bactericidal effect. Deep UV LEDs not only sanitize the air itself, but also help keep filters clean by preventing mold growth and contamination.

How to sterilize air in confined spaces with bacteria, such as rooms, corridors, elevators, public transportation? The first is the issue of safe use. Excessive exposure to UV radiation can cause keratoconjunctivitis (external damage to the eye) and redness (reddening of the skin). The National Institute for Occupational Safety and Health (NIOSH) recommends that to ensure the safety of indoor occupants, the upper limit of ultraviolet radiation exposure is no more than 0.2 microjoules per square centimeter for eight consecutive hours. How to control the negative maintenance caused by ultraviolet radiation to humans and other living animals is the first problem to be solved in the popularization of ultraviolet sterilization.

Air disinfection equipment currently in use includes carts and robots that carry UV light sources (usually mercury lamps) that are used in the absence of people. These devices need to be used in the absence of people, and cannot achieve coexistence of humans and machines, especially in overcrowded hospitals or isolation wards. And they are often huge and inconvenient to transport.

Air disinfection equipment currently in use also includes ceiling-mounted and floor-mounted fixtures with UV light sources (usually mercury lamps). In order to prevent ultraviolet radiation from entering the human eye, these fixtures limit the ultraviolet radiation to a closed area or a location that cannot be seen by the human eye, and use air circulation to introduce air into the closed area inside the fixture for disinfection. But this directly affects the sterilization efficiency of the device.

In order to realize the direct sterilization of the air in the confined space by ultraviolet rays, and to avoid excessive ultraviolet radiation in the lower part of the room (that is, the part where people are present in the room), it is best to realize an ultraviolet device that can control the height, range, and exposure of ultraviolet rays. Dose (the irradiation dose is the product of the irradiation power per unit area and the irradiation time). Sterilize the air in the area below the ceiling and above a certain height from the ground by direct ultraviolet radiation. Of course, proper air flow exchange will be beneficial to the sterilization effect of the equipment, but the range of direct irradiation is much larger than that of sucking air into the equipment for internal sterilization, so the efficiency is greatly improved.

On the other hand, when it is necessary to quickly and thoroughly disinfect the severe infectious diseases and medical staff who enter the room under special circumstances, we must use a device that can directly irradiate designated locations such as doorways, beds, patients, operating tables, medical equipment, etc. of UV equipment. The ultraviolet radiation intensity, angle, and irradiation area of this device are adjustable and controllable.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a human-machine coexistence ultraviolet lamp irradiation system for sterilizing the upper air in the space. It is suitable for places with high ceilings, such as fitness, sports venues, or indoor performances. It can also be used in rooms with relatively low ceilings, such as elevators and public transport, rooms, office buildings, halls, etc.

In order to achieve the above object, the present invention adopts the following technical solutions:

A human-machine coexistence ultraviolet lamp irradiation system for air sterilization in the upper layer of space, comprising a sterilization device arranged on a wall of a closed or semi-enclosed space, the sterilization device comprising a mercury lamp and an irradiation angle controller, the mercury lamp Installed in the reflective lampshade;

The irradiation angle controller drives the reflective lampshade to rotate to adjust the irradiation angle of the mercury lamp.

As a further improvement of the present invention, the reflective lampshade is a parabolic curved profile, the inner surface of which is embedded with a reflective aluminum mirror, and the surface of the reflective aluminum mirror is PVD-deposited with a pure aluminum coating; the mercury lamp tube is arranged on the central surface of the reflective lampshade.

As a further improvement of the present invention, the irradiation angle controller includes a rotating shaft and a driving motor, the rotating shaft is arranged on the back of the reflective lampshade, and the front side of the reflective lampshade is opposite to the radiation surface of the equipment shell; the driving motor drives the rotating shaft to rotate.

As a further improvement of the present invention, it also includes a louver, which includes a louver driving device and a plurality of louvers with reflective coating; the mercury lamps are arranged along the direction of the louvers, and the louver driving device drives the louver to swing.

As a further improvement of the present invention, the outer edges of all the blades of the shutter are arranged flush or inclined in sequence.

As a further improvement of the present invention, a converging lens is also arranged between the shutter and the mercury lamp, and the distance from the converging lens to the mercury lamp is twice the focal length of the lens; the center of the lens, the center of the lamp and the center of the shutter are collinear.

As a further improvement of the present invention, it also includes an equipment casing, and the reflective lampshade is arranged in the equipment casing; the equipment casing is a hexahedron, the installation surface and the non-radiating surface of the equipment casing are made of non-transparent materials, and the radiating surface of the equipment casing is made of transmission. UV material with vents on the non-radiative side.

As a further improvement of the present invention, the equipment casing is fixed to the wall by a lifting screw assembly, and the lifting screw assembly includes a lifting fixing sleeve and a screw; a lifting fixing sleeve is arranged at the bottom of the equipment casing, and a screw is arranged inside the lifting fixing sleeve , the bottom of the screw is fixed with the wall.

As a further improvement of the present invention, it also includes a visual calibration device, the visual calibration device is arranged in the equipment housing, and the visual calibration device emits a laser spot or a laser positioning line.

Compared with the prior art, the present invention has the following advantages:

The direction of ultraviolet radiation has good collimation, and the direction can be adjusted to avoid the contact between human eyes and skin, and realize the coexistence of human and machine. It is convenient to hang on any wall, directly sterilizes the air in space, has high power per unit radiation area, long working distance, wide range and high efficiency. The sterilization equipment of the present invention includes a mercury lamp tube and an irradiation angle controller. The mercury lamp tube is installed in the reflective lampshade; the irradiation angle controller drives the reflective lampshade to rotate to adjust the radiation angle of the mercury lamp tube. The sterilization equipment of the present invention is easy to adjust the radiation angle to provide radiation fields suitable for various ceiling heights, and can be applied to places with higher floor heights, such as fitness, sports venues, or indoor performances. It can also be used in rooms with relatively low ceilings, such as elevators and public transport, rooms, office buildings, halls, etc. This system can realize the coexistence of human and machine. When there are people in the space, the equipment can work normally; the ultraviolet radiation that any human eye can accept in the space does not exceed 0.2 microjoules/square centimeter within 8 hours, which is in line with the National Occupational Safety and Health Research Institute of the United States. According to the NIOSH safety standard for ultraviolet radiation, it can directly sterilize the air, and it can still efficiently sterilize in a space with no air circulation or poor air circulation.

Description of drawings

Fig. 1 Far-field angle distribution of light intensity of traditional mercury lamps;

Figure 2 installs a sterilization device with a high ultraviolet transmittance shell structure and a mercury lamp as the ultraviolet light source;

Figure 3 In the sterilization equipment, the outgoing direction of the collimated light is adjusted by adjusting the angle of the reflecting lampshade;

Fig. 4 installs the sterilization equipment of the shutter shell structure and the ultraviolet light source uses the mercury lamp;

Fig. 5 The shutters of aligned arrangement and the shutter structure of non-aligned arrangement;

Figure 6 Adjust the radiation angle by adjusting the housing lifting screw;

Figure 7 is a schematic diagram of air sterilization for the upper space of the room when the sterilization system works in the higher space;

Figure 8 is a schematic diagram of air sterilization for the upper space of the room when the sterilization system works in the lower space;

Figure 9 Installation of sterilization equipment above the closed space door;

Figure 10 Installation of sterilization equipment above the closed space bed;

Figure 11 Multiple sterilization devices are installed on the wall of the enclosed space.

Detailed ways

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present invention is a human-machine coexistence ultraviolet lamp irradiation system for air sterilization in the upper layer of the space, comprising a sterilization device arranged on a wall of an enclosed or semi-enclosed space, the sterilization device comprising a mercury lamp and an irradiation angle controller, The mercury lamp is installed in the reflective lampshade;

The irradiation angle controller drives the reflective lampshade to rotate to adjust the irradiation angle of the mercury lamp.

The present invention is a deep-ultraviolet sterilization system for the upper air in the closed and semi-open space between the equipment installation position and the ceiling, including an ultraviolet light source, and the ultraviolet light source also needs a driving module, a control module, a power management module, a timing module, and wireless communication. Modules such as modules are not the focus of the present invention, and will not be described in detail again.

Ultraviolet lamps illuminate only the air in the upper part of the room (generally considered the space between about 190 cm above the floor and the ceiling), thereby protecting the occupants of the room from harmful radiation while sterilizing the air in the upper part of the room. If calculated according to a space with a height of 2.8 meters, the direct sterilization volume accounts for more than 32% of the entire room. Due to the wide direct radiation field, the air velocity can be reduced to reduce the noise of air movement and airflow, even without air flow as an aid, making the device acceptable in environments such as hospitals and public libraries.

The sterilization device of the present invention mainly adopts the wall-mounted type to be installed above the door, above the window, above the wall, etc., and the high-end installation is at least 1.9 meters. According to the principles of design, installation and debugging, indoor people, especially human eyes and skin, can be effectively avoided through the control module. The UV dose received by the eye for 8 consecutive hours does not exceed the specified amount, eg 0.2 microjoules/cm 2 .

If a mercury lamp is used as the ultraviolet light source, the mercury lamp should be a low-pressure mercury lamp with a dominant wavelength of 253.7 nm. If a mercury lamp is used as the ultraviolet light source, the mercury lamp should be a low-pressure mercury lamp with a dominant wavelength of 185 nm.

If a mercury lamp is used as the ultraviolet light source, the collimated light emission is realized by the combination of parabolic curved aluminum mirror, louver and quartz lens. The parabolic curved reflective aluminum mirror reflects the backward light emitted by the mercury lamp to form parallel light output, and the quartz lens refracts the forward light emitted by the mercury lamp to form parallel light output. Exit for further collimation. Its radiation field divergence angle is small, less than 10 degrees, almost collimated light.

The parabolic curved reflective lampshade is usually supported by metal profiles, the inner surface is embedded with mirror aluminum material, and the surface is PVD-deposited over 99.9% pure aluminum coating. This ensures high reflectivity in the UVC band. The reflector can be fixed, or it can be movable with a pneumatic or electric shutter. It can be rotated along the axis of the lamp tube to completely block the forward outgoing light, simulating a mercury lamp off state.

If the shutters are made of materials with a high reflective coefficient, such as polished aluminum alloy or polished stainless steel, the length of the shutters on the next layer from top to bottom always exceeds the length of the previous layer, generally 0.5-3 inside, thus blocking the window from the top. The light reflected downward by the last louver ensures that the less light is emitted downward, the better, to protect human eyes.

Blinds can be coated with materials that absorb the deepest UV light as much as possible or have such properties. For example, matte treatment of metal surface, or electroplating treatment, such as black nickel, black zinc, etc. In this case the louver blades themselves are not reflective, so the length of each blade can be the same.

A converging lens can be placed between the shutter and the mercury lamp, the purpose of which is to condense the emitted light from the front of the mercury lamp. The distance between the lens and the lamp tube is one focal length of the lens, so the emitted light is parallel light. The center of the lens, the center of the lamp tube and the center of the shutter are three points and one line. In this way, the above-mentioned parallel light passes through the louver with the highest efficiency.

The angle of its radiation light field can be arbitrarily adjusted within a certain range of 0-30 degrees through the placement angle of the housing without changing the internal light path. For example, through the lifting screw on the back of the casing, adjust the distance between the bottom edge of the casing and the wall to increase the elevation angle of the device, so as to realize the adjustment of the elevation angle of the outgoing light.

Among them, the radiation angle can be adjusted through the internal optical path, and the pitch angle of plus or minus 90 degrees can be achieved, so that in theory, the air in all spaces between the ceiling and the floor can be directly radiated and sterilized.

If the light source is a mercury lamp, this adjustment keeps the lamp still, and is achieved by rotating the parabolic reflector and adjusting the angle. In this case, the housing material is a material with high UV transmittance, such as quartz glass. Or without any material blocking, the housing is stationary.

The irradiation angle adjustment function can be calibrated by a visual laser spot or a laser positioning line. The laser spot indicates that below this height, the ultraviolet measurement received by the human eye for 8 consecutive hours does not exceed the specified value, such as 0.2 microjoules/square centimeter. For each different room, the start and end areas of the radiation scan are selected according to the specific build and geometry.

Its vents accelerate indoor air circulation and the exchange of upper and lower air, and as the air circulates, the sterilized air spreads to every corner. Ventilation design can also be omitted, because direct radiation sterilization does not require air mobility. Without the aid of external air flow, in principle air molecular diffusion can also achieve the spread of sterilized air to every corner.

The ultraviolet light source can also be a traditional low-pressure mercury lamp, and the peak wavelength of the mercury lamp spectrum is about 253.7 nm, or the wavelength is 185 nm. The UV mercury lamp light source has the advantages of large volume, high light efficiency, short sterilization time and low price.

An ordinary low-pressure mercury lamp is shown in Figure 1, and the far-field distribution of its light intensity is usually a 360-degree isotropic uniform distribution.

In order to improve the output efficiency of the lamp tube through the louver, a converging lens can be placed between the louver and the mercury lamp, the purpose of which is to concentrate the emitted light emitted from the front of the lamp tube. The distance between the lens and the lamp is one focal length of the lens, so the emitted light is parallel light. The center of the lens, the center of the lamp and the center of the shutter are three points and one line. In this way, the above-mentioned parallel light has the highest efficiency through the louver.

Any angle such as -90 to 90 degrees can be flipped by rotating the angle of the reflective lampshade, as shown in Figure 3. In this case the housing does not need shutters and the housing is either high UV transmittance or has no housing.

In addition to the described method of turning the reflective lampshade, the shutters with high UV reflectivity can also be turned at the same time. At this time, the housing is no longer a material with a high UV transmittance. As shown in Figure 3.

In order to ensure that the outgoing light does not shoot into the lower air as much as possible, the neatly arranged shutters can be installed in a dislocation, as shown in Figure 4, to ensure that the adjacent shutters are a little more protruding than the upper shutters. For example 0.5-3cm. This ensures that the light reflected downward from the upper layer of windows has a high probability of being reflected upward again. If the slats themselves absorb UV light, this advantage is not obvious, but if the slats with high UV reflectivity are used, this advantage becomes obvious.

The angle of the outgoing light can also be adjusted by adjusting the elevation angle of the entire box. As shown in Figure 6, the elevation angle of the whole machine can be adjusted through a lifting screw at the bottom of the back of the casing. According to the length of the lifting screw, the corresponding elevation angle is different.

The space can be divided into two situations according to the height: one is the normal floor height, and the space is sufficient. One is that the floor height is low and the space is low. Corresponding to the normal floor height such as 2.6-3 meters and above, the installation height of the sterilization equipment can be as high as possible, close to the ceiling. Refer to Figure 7 for radiation angle calculation. The calculation principle is to assume that a 1.9-meter person is standing at the farthest place from the sterilization system. From the top of his head to the ceiling should be a safe area. In this part of the area, the ultraviolet radiation will not irradiate the human eye, and the corresponding projection area is the ABCD shadow area. shown. At this time, the angle at which the parabolic reflector can be rotated is shown as θ. The area corresponding to CDEF is the area where ultraviolet radiation is prohibited.

For the case of low floor height, corresponding to the case where the floor height is 2-2.5 meters or even lower, when the sterilization equipment has to be installed at a height close to the horizontal position of the human eye, the radiation angle needs to be restricted again. As shown in Fig. 8, ABCD is the allowable irradiation projection area. The design principle of the elevation angle θ is to ensure that the ultraviolet light cannot enter the human eye when the person is closest to the device.

In order to achieve sterilization of the upper air with a projected area corresponding to the shadow area of ABCD, it may be necessary to continuously irradiate the sterilization equipment at more than one angle θ. Instead, the sterilization equipment may be required to scan irradiation at different θ angles within a range. This can be visualized with a laser that is synchronized with the irradiation angle. In order to facilitate users to define the starting position and ending position of scanning according to their actual situation. During the installation and debugging process, scan different θ angles, observe the moving position of the laser spot on the wall and ceiling, and then set the initial and end positions. There is UV radiation between these two positions (theta angles) and no UV radiation outside these two angles.

In individual cases, the system can be used to sterilize the lower air in the room and even the surfaces of objects. For example, as shown in Figure 10, the hospital bed is sterilized. This can be used in unmanned conditions, or when there are people, to sterilize the patient on the bed after protecting a specific area. This is also achieved by adjusting the radiation angle θ. The calibration of the start and end positions can also be done using the above method of visualizing the laser spot.

For a room with a larger area, more than one sterilization device can be installed on the wall in different directions, so as to achieve a more complete coverage of the upper air in the room, as shown in Figure 11.

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a common traditional tubular low-pressure mercury lamp. The direction of UV radiation is perpendicular to the surface isotropic. Generally, it is turned into parallel light by a parabolic mirror.

FIG. 2 depicts a sterilization device 200 using a mercury lamp 400 as an ultraviolet light source. The difference from the previous one is that here 401 is a reflective lampshade with a mirror-finished aluminum with a high UV reflection coefficient on the inner surface. When the angle of the outgoing light needs to be adjusted, the reflective lampshade 401 is rotated by the irradiation angle controller 105, and the reflection within the range of ±90 can be achieved theoretically. At this time, the front surface 101 and the bottom surface 104 of the housing may be made of materials with high ultraviolet transmission coefficient, such as quartz glass, or they may not be shielded.

Figure 3 depicts that the mercury lamp 400 does not move, and the reflective lampshade 401 is rotated to rotate the photoelectric output direction under the condition of ensuring the collimation of the light. Reflections in the range of +-90 can theoretically be achieved. For example, at -90 degrees, it is to irradiate directly below the device.

Figure 4 depicts the case where a 400 mercury lamp is used as the UV light source, and the above-mentioned blinds are used for further collimation on the front of the device housing. If the shutter 301 and the reflector 401 can be rotated synchronously, the collimation and direction rotation of the light will be realized. Of course, the shutter 301 and the reflector 401 can also be fixed.

Figure 4 depicts two different louver 301 configurations. The first is that the louver blades 302 are aligned left and right from top to bottom. The second is that the shutter blades 302 are moved horizontally to the right from top to bottom, and the distance to the right is 0.5-3 cm. The advantage of the second structure is to further block the possible downward light rays, and try to ensure that the light rays 404 are reflected upwards.

FIG. 4 also describes that a converging lens 403 can be placed between the shutter 301 and the mercury lamp 400 , the purpose of which is to condense the emitted light emitted from the front of the lamp 400 . The distance between the lens 403 and the lamp tube 400 is one focal length of the lens, so the emitted light is parallel light. The center of the lens 403, the center of the lamp tube 400 and the center of the shutter 301 are three points and one line. In this way, the above-mentioned parallel light has the highest efficiency through the louver.

Figure 6 depicts another method of adjusting the direction of light. No matter what direction the shutters and mirrors take, the lifting screw under the casing of the device 200 can always adjust the overall elevation angle of the casing by changing the distance between the lower edge of the casing and the wall, thereby realizing the adjustment of the outgoing light 404.

Figure 7 depicts a schematic diagram of air sterilization for the upper space of the room when the sterilization system works in a higher-height space. The installation height of the sterilization equipment 200 or 300 can be as high as possible, close to the ceiling. The principle of radiation angle calculation is to assume that a 1.9-meter person is standing in the room farthest from the sterilization system. The area from the top of his head to the ceiling should be the area where radiation can be carried out. In this part of the area, ultraviolet rays will not be irradiated to the human eyes. The corresponding projected area is shown as the shaded area of ABCD. At this time, the angle at which the reflector 401 can be rotated is shown by θ. The area corresponding to CDEF is the area where ultraviolet radiation is prohibited.

Fig. 8 depicts the air sterilization of the upper space of the room when the sterilization system works in the lower floor space. For the case of the lower floor height, corresponding to the case where the floor height is 2-2.5 meters or even lower, the sterilization equipment 200 or 300 When it has to be installed at a height close to the horizontal position of the human eye, the radiation angle needs to be re-limited. As shown in Figure 8, ABCD is the allowable irradiation projection area. The design principle of the elevation angle θ of the reflective lampshade 401 is to ensure that the ultraviolet light cannot enter the human eye when the person is closest to the device.

In order to achieve sterilization of the upper air with a projected area corresponding to the shadow area of ABCD, it may be necessary to continuously irradiate the sterilization equipment at more than one angle θ. Instead, the sterilization equipment may be required to scan irradiation at different θ angles within a range. This can be visualized with a laser that is synchronized with the irradiation angle. In order to facilitate users to define the starting position and ending position of scanning according to their actual situation. During the installation and debugging process, scan different θ angles, observe the moving position of the laser spot on the wall and ceiling, and then set the initial and end positions. There is UV radiation between these two positions (theta angles) and no UV radiation outside these two angles.

Figure 9 depicts the installation of a sterilization device 200 or 300 above an enclosed space door. Figure 10 depicts the installation of a sterilization device 200 or 300 above a bed in an enclosed space. In the individual cases depicted in Figure 10, the system can be used to sterilize the lower air in a room, or even surfaces. For example, sterilizing hospital beds. This can be used in unmanned conditions, or when there are people, to sterilize the patient on the bed after protecting a specific area. This is also achieved by adjusting the radiation angle θ. The calibration of the start and end positions can also be done by visualizing the laser spot as described above.

For a room with a larger area, more than one sterilization device 200 or 300 can be installed on the wall in different directions, so as to achieve a more complete coverage of the upper air in the room. As shown in Figure 11, under the action of multiple sterilization devices, the upper air (the ABCD dotted line in Figure 11 represents the plane to the ceiling) can be uniformly and completely covered in the entire room near the ceiling, and the sterilization efficiency is the highest.

The device of the present invention that utilizes ultraviolet rays to efficiently sterilize the air in a space uses air convection to irradiate microorganisms such as bacteria and viruses with short-wave ultraviolet rays to destroy their DNA structures, causing them to die or lose their ability to reproduce. It can effectively inhibit the amount of bacteria in the air and achieve an effective circulating sterilization effect. The device can be used safely in the presence of people, without radiation damage to human eyes and skin, and realize the coexistence of humans and machines. It is especially suitable for public places such as hospitals, schools, offices, stations, terminals, as well as cars and trains. , aircraft and other means of transportation.

It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for the purpose of description and to distinguish similar objects, and there is no sequence between the two, nor can they be construed as indicating or imply relative importance. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

It should be understood that the above description is for purposes of illustration and not limitation. From reading the above description, many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the preceding claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of being comprehensive. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to disclaim such subject matter, nor should it be construed that the applicant has not considered such subject matter to be part of the disclosed subject matter.

Claims (9)

1. An ultraviolet lamp tube irradiation system which is used for man-machine coexistence and is used for sterilizing air at the upper layer of a space is characterized by comprising sterilization equipment arranged on a wall body of a closed or semi-closed space, wherein the sterilization equipment comprises a mercury lamp tube and an irradiation angle controller, and the mercury lamp tube is arranged in a reflecting lamp shade;

the irradiation angle controller drives the reflector lamp cover to rotate so as to adjust the irradiation angle of the mercury lamp tube.

2. The human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing the air at the upper layer of the space as claimed in claim 1, wherein said light reflecting lampshade is a parabolic curved profile, a reflecting aluminum mirror is embedded in the inner surface thereof, and a pure aluminum coating is vapor-deposited on the surface of the reflecting aluminum mirror by PVD; the mercury lamp tube is arranged on the central surface of the reflecting lampshade.

3. The human-computer coexisting ultraviolet lamp irradiation system for sterilizing the upper air of the space as recited in claim 1, wherein said irradiation angle controller comprises a rotary shaft and a driving motor, the rotary shaft is disposed on the back surface of the light reflecting shade, the front surface of the light reflecting shade is opposite to the radiation surface of the equipment housing; the driving motor drives the rotating shaft to rotate.

4. An ergonomic co-located ultraviolet tube irradiation system for upper air sterilization according to claim 1, further comprising a shutter drive and a plurality of leaves having a reflective coating; the mercury lamp tubes are arranged along the trend of the window leaves, and the louver driving device drives the window leaves to swing.

5. The human-computer coexisting ultraviolet tube irradiation system for sterilization of air at an upper space level as recited in claim 4, wherein all the outer edges of the louvers of said louver are disposed flush or sequentially inclined.

6. The human-computer coexisting ultraviolet lamp irradiation system for sterilizing the upper air of the space as recited in claim 4, wherein a condensing lens is further disposed between said louver and the mercury lamp, and the distance from said condensing lens to said mercury lamp is one focal length of said lens; the lens center, the lamp tube center and the louver center are collinear.

7. The human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing the air at the upper space layer as recited in any one of claims 1 to 6, further comprising an equipment housing, said reflector lamp shade being disposed within the equipment housing; the equipment shell is a hexahedron, the installation surface and the non-radiation surface of the equipment shell are made of non-transparent materials, the radiation surface of the equipment shell is made of ultraviolet transmission materials, and the non-radiation surface is provided with a ventilation opening.

8. The human-machine coexisting ultraviolet lamp tube irradiation system for sterilization of upper air in space as set forth in claim 7, wherein said equipment housing is fixed to a wall by a lifting screw assembly comprising a lifting fixing sleeve and a screw; the bottom of the equipment shell is provided with a lifting fixing sleeve, screws are arranged in the lifting fixing sleeve, and the bottom of each screw is fixed to a wall body.

9. The human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing air at the upper space layer as recited in claim 7, further comprising a visual calibration device, said visual calibration device being disposed within the equipment housing, the visual calibration device emitting laser spots or laser positioning lines.

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