CN111282012B - Human-machine coexistence UV lamp irradiation system for air sterilization in upper space - Google Patents

Abstract

The invention discloses a human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing air at the upper layer of a space, which 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 parabolic 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. The sterilizing equipment of the invention is easy to adjust the radiation angle to provide a radiation field suitable for various ceiling heights, and can be suitable for places with higher floor heights, such as fitness places, sports places, indoor performances and the like. And can also be used in rooms with relatively low ceilings, such as elevators and public transport vehicles, rooms, office buildings, halls and the like.

Description

Man-machine coexisting ultraviolet lamp tube irradiation system for sterilizing air on upper layer of space

Technical Field

The invention relates to the technical field of sterilization equipment, in particular to a man-machine coexisting ultraviolet lamp tube irradiation system for sterilizing air on the upper layer of a space.

Background

Ultraviolet rays are generally classified into 3 types by wavelength: the long-wave ultraviolet rays with the wavelength of 315nm to 380nm are abbreviated as UVA, the medium-wave ultraviolet rays with the wavelength of 280nm to 315nm are abbreviated as UVB, and the short-wave ultraviolet rays with the wavelength of 200nm to 280nm are abbreviated as UVC. Most of the currently available ultraviolet disinfection lamps utilize UVC ultraviolet rays to achieve disinfection. The ultraviolet ray can kill various microorganisms including bacteria propagules, spores, mycobacteria, viruses, fungi, rickettsia, mycoplasma and the like, and has broad spectrum. The sterilization mechanisms of ultraviolet light include the destruction of genetic material, affecting enzyme activity, and the destruction of proteins leading to the death of bacteria, viruses, and microorganisms.

The ultraviolet bacteria disinfection advantages include:

1) physical destruction process without using chemical agent;

2) the method is not influenced by chemical equilibrium conditions such as temperature, concentration, activity and the like;

3) no toxicity, no residue and no peculiar smell;

4) the cell wall and viral protein coat cannot block;

5) the DNA and the RNA are uniformly damaged, the medicine does not need to be replaced, and the combined medicament does not need to be used;

6) is especially suitable for sterilizing the surfaces of air, water and objects.

Ultraviolet bacteria disinfection can be used in many scenes, and is generally classified into three main categories, namely air sterilization, water sterilization and surface sterilization. Pathogenic microorganisms that are primarily airborne, such as influenza virus (flu), rhinovirus (common cold), and the more dangerous pathogens (tuberculosis), are responsible for many diseases. Mold and spores are also lodged in heating, ventilation and air conditioning (HVAC) building structural systems, causing many diseases. Such as building related diseases (BRI). In order to reduce the occurrence of diseases, air disinfection systems may be installed inside air conditioners, air purifiers, and consumer devices. Deep ultraviolet LEDs can be installed in filtration systems, humidifier water tanks, and small portable consumer devices in household hvac ventilation ducts. Because the wavelength of the deep ultraviolet can penetrate through the air to kill bacteria carried in the air, the deep ultraviolet has extremely strong sterilization effect. Deep ultraviolet LED not only can disinfect to air itself, can also help filter equipment to keep clean through preventing mycotic breeding and pollution.

How to disinfect air inside an enclosed space with bacteria, such as a room, corridor, elevator, public transport? The first is the safe use problem. Excessive exposure to ultraviolet radiation can cause keratotic conjunctivitis (external damage to the eye) and redness (reddening of the skin). The National Institute of Occupational Safety and Health (NIOSH) recommends that, in order to ensure the safety of personnel in the room, the upper limit of the uv radiation dose is not more than 0.2 microjoules per square centimeter for eight consecutive hours. How to control the negative maintenance caused by ultraviolet radiation to people and other living animals is the problem that the popularization of ultraviolet sterilization is the first to solve.

Currently employed air disinfection devices include carts and robots used in the absence of a human carrying a source of ultraviolet light (typically a mercury lamp) and a robot. These devices need to be used without a person, cannot coexist, and are not practical especially in a full-size hospital or an isolated ward. And often the size is huge, and the transportation is inconvenient.

The air disinfection apparatus currently in use also includes suspended ceilings and floor mounted fixtures fitted with ultraviolet light sources, typically mercury lamps. These fixtures prevent uv radiation from entering the human eye, by confining the uv radiation to an enclosed area or location not visible to the human eye, and by introducing air into the enclosed area inside the fixture for disinfection by air circulation. But this directly affects the sterilization efficiency of the device.

In order to achieve direct sterilization of the air in the enclosed space by ultraviolet light and avoid excessive ultraviolet radiation in the lower part of the room (i.e. the part of the room where a person is present), it is desirable to implement an ultraviolet device that can control the ultraviolet radiation height, range, and dose (the dose is the product of power per unit area of radiation and radiation time). Air in an area below the ceiling and above a certain height from the floor is sterilized by direct ultraviolet radiation. Proper air flow exchange will of course be beneficial to the sterilization effect of the device, but the range of direct irradiation is much greater than the range of air suction into the device for internal sterilization, and therefore the efficiency is greatly improved.

On the other hand, when severe infectious disease people and medical care personnel who enter a room need to be disinfected quickly and thoroughly in special cases, an ultraviolet device which can directly irradiate a designated place such as a doorway, a hospital bed, a patient, an operating table, medical equipment and the like must be used. The ultraviolet radiation intensity, angle and irradiation area of the device can be adjusted and controlled.

Disclosure of Invention

In order to solve the above problems, the present invention provides a human-machine coexisting ultraviolet lamp irradiation system for sterilizing air at an upper layer of a space, and the sterilization apparatus of the present invention can easily adjust a radiation angle to provide a radiation field suitable for various ceiling heights, and can be applied to places with higher layer heights, such as fitness, sports, or indoor performance. And can also be used in rooms with relatively low ceilings, such as elevators and public transport vehicles, rooms, office buildings, halls and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

an ultraviolet lamp tube irradiation system for man-machine coexistence aiming at sterilization of air at the upper layer of a space comprises 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.

As a further improvement of the invention, the reflecting lampshade is a parabolic curved section, a reflecting aluminum mirror is embedded in the inner surface of the reflecting lampshade, and a pure aluminum coating is evaporated on the surface of the reflecting aluminum mirror by PVD; the mercury lamp tube is arranged on the central surface of the reflecting lampshade.

As a further improvement of the invention, the irradiation angle controller comprises a rotating shaft and a driving motor, the rotating shaft is arranged on the back surface of the reflecting lamp shade, and the front surface of the reflecting lamp shade 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 invention, a blind is also included, the blind including a blind drive and a plurality of louvers 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.

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

As a further improvement of the invention, a convergent lens is arranged between the shutter and the mercury lamp tube, and the distance from the convergent lens to the mercury lamp tube is one time of the focal length of the lens; the lens center, the lamp tube center and the louver center are collinear.

As a further improvement of the invention, the LED lamp also comprises an equipment shell, wherein the light-reflecting lampshade is arranged in the equipment shell; 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.

As a further improvement of the invention, the equipment shell is fixed with a wall body through a lifting screw component, and the lifting screw component comprises 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.

As a further improvement of the invention, the device also comprises a visual calibration device, wherein the visual calibration device is arranged in the equipment shell and emits laser spots or laser positioning lines.

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

the ultraviolet radiation direction collimation is good, the direction can be adjusted to avoid the contact of human eyes and skin, and the coexistence of human and machine is realized. The sterilization device is convenient to hang on any wall body, directly sterilizes the air in the space, and has high power per unit radiation area, long action distance, wide range and high efficiency. The sterilization equipment comprises a mercury lamp tube and an irradiation angle controller, wherein the mercury lamp tube is arranged in a reflecting lampshade; the irradiation angle controller drives the reflector lamp cover to rotate so as to adjust the irradiation angle of the mercury lamp tube. The sterilizing equipment of the invention is easy to adjust the radiation angle to provide a radiation field suitable for various ceiling heights, and can be suitable for places with higher floor heights, such as fitness places, sports places, indoor performances and the like. And can also be used in rooms with relatively low ceilings, such as elevators and public transport vehicles, rooms, office buildings, halls and the like. The system can realize coexistence of man and machine, and the equipment can work normally under the condition that people exist in the space; any human eye in the space can receive ultraviolet radiation within 8 hours, the ultraviolet radiation dose not exceed 0.2 microjoule/square centimeter, the standard of the National Institute of Occupational Safety and Health (NIOSH) on the safety of ultraviolet radiation is met, the air is directly sterilized, and the air can still be efficiently sterilized in the space without air circulation or with poor air circulation.

Drawings

FIG. 1 is a far field angular distribution of light intensity for a conventional mercury lamp;

FIG. 2 is a view showing a sterilization apparatus in which a high ultraviolet transmittance envelope structure is installed and a mercury lamp is used as an ultraviolet light source;

in the sterilization equipment of FIG. 3, the emergent direction of the collimated light is adjusted by adjusting the angle of the reflecting lamp shade;

FIG. 4 is a view showing a sterilization apparatus in which a louver housing structure is installed and an ultraviolet light source uses a mercury lamp;

FIG. 5 an aligned blind and a non-aligned blind arrangement;

FIG. 6 is a view showing the adjustment of the radiation angle by adjusting the housing elevating screws;

FIG. 7 is a schematic view of air sterilization of the upper room space when the sterilization system is operating in the upper room space;

FIG. 8 is a schematic view of the sterilization system operating in the lower high-level space for air sterilization of the upper space of the room;

FIG. 9 shows the installation of a sterilization apparatus above the enclosure door;

FIG. 10 shows the installation of a sterilization apparatus above the enclosed space bed;

FIG. 11 is a wall of an enclosure in which a plurality of sterilization apparatuses are installed.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Unless defined otherwise, 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 terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to a human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing air at the upper layer of a space, which comprises 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.

The invention relates to a deep ultraviolet sterilization system for upper air between an equipment installation position and a ceiling in a closed and semi-open space, which comprises an ultraviolet light source, wherein the ultraviolet light source also needs a driving module, a control module, a power management module, a timing module, a wireless communication module and other modules, and is not the key point of the invention, and the detailed description is not provided again.

The uv lamps only illuminate the air in the upper part of the room (generally considered to be the space between the floor and the ceiling at about 190 cm above the floor) and thereby sterilize the air in the upper part of the room while protecting the people in the room from harmful radiation. If calculated in terms of a space with a floor height of 2.8 meters, the direct sterilization volume accounts for more than 32% of the whole room. Because the direct radiation field is wider, the air flow rate can be reduced so as to reduce the noise of air movement and air flow, and even the air flow is not required to be used as assistance, so that the device can be accepted in the environments of hospitals, public libraries and the like.

The sterilization device is mainly installed above a door, a window, a wall and the like in a wall-mounted mode, and the installation height at least exceeds 1.9 meters. According to the design, installation and debugging principle, indoor people, particularly eyes and skin can be effectively avoided through the control module. So that the eye receives no more than a specified dose of uv light, for example 0.2 microjoules per square centimeter, for 8 consecutive hours.

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 the mercury lamp is used as the ultraviolet light source, the collimated light is emitted by matching the parabolic curved surface reflecting aluminum mirror, the shutter and the quartz lens. The parabolic curved surface reflection aluminum mirror reflects backward outgoing light emitted by the mercury lamp to form parallel light outgoing, the quartz lens refracts the forward outgoing light emitted by the mercury lamp to form parallel light outgoing, and the louver further collimates the two parts of parallel light outgoing. The divergence included angle of the radiation light field is smaller than 10 degrees, and the radiation light field is almost emergent as collimated light.

The parabolic curved reflecting lampshade is usually supported by metal sectional materials, mirror aluminum materials are embedded into the inner surface of the parabolic curved reflecting lampshade, and pure aluminum coatings with more than 99.9 percent of PVD evaporation are coated on the surface of the parabolic curved reflecting lampshade. Thereby ensuring high reflectivity to the UVC wave band. The reflecting lamp shade can be fixed, can also be movable with pneumatic or electric shutter characteristics, and can rotate along the axial direction of the lamp tube to completely block positive emergent light so as to simulate the closed state of a mercury lamp.

If the louver is made of a material with a high light reflection coefficient, such as polished aluminum alloy or polished stainless steel, the length of the louver of the next layer always exceeds the length of the louver of the previous layer from top to bottom, and is generally within 0.5 to 3, so that light rays reflected downwards from the previous louver are blocked, the fewer the light rays emitted downwards are, the better the light rays emitted downwards are, and human eyes are protected.

The louver may be made of or coated with a material that absorbs as much deep ultraviolet light as possible. For example, the metal surface is subjected to matte treatment, or electroplating treatment, such as black nickel, black zinc and the like. In this case, the blind blades themselves are not reflective, and thus each blade may be uniform in length.

A converging lens can be arranged between the shutter and the mercury lamp tube, and aims to converge the emitted light emitted by the front face of the mercury lamp tube. The distance between the lens and the lamp tube is one focal length time of the lens, so the emergent light is parallel light. The center of the lens, the center of the lamp tube and the center of the shutter are in a line of three points. So that the above-mentioned parallel light passes through the louver with the highest efficiency.

The angle of the radiation light field can be adjusted within a certain range of 0-30 degrees through the placement angle of the shell without changing the internal light path. For example, the distance between the bottom edge of the shell and the wall surface is adjusted through a lifting screw on the back surface of the shell, so that the elevation angle of the equipment is increased, and the adjustment of the elevation angle of emergent light is realized.

The radiation angle can be adjusted through an internal light path, and the pitch angle of plus or minus 90 degrees can be realized, so that the air in all spaces from a ceiling to a floor can be directly radiated and sterilized theoretically.

If the light source is a mercury lamp, the adjustment keeps the lamp tube still, and is realized by rotating a paraboloid reflecting lamp cover and adjusting the angle. In this case, a material having a high ultraviolet transmittance, such as quartz glass, is used as the housing material. Or no material is adopted for blocking, and the shell is static.

The irradiation angle adjustment function can be calibrated by a visible laser spot or laser alignment line, the laser spot indicating below this height that the ultraviolet dose received by the human eye for 8 consecutive hours does not exceed a specification, for example 0.2 microjoules per square centimeter. For each different room, the start and end regions of the radiation scan are selected according to the specific build-in and geometry.

The ventilation opening can accelerate indoor air circulation and exchange of upper-layer air and lower-layer air, and the sterilized air is spread to each corner along with air circulation. Ventilation designs may not be used because direct radiation sterilization does not require air flow. Spreading the sterile air to every corner can in principle also be achieved without the aid of external air flow assistance.

The UV light source may also be a conventional low pressure mercury lamp having a peak wavelength of about 253.7nm or 185nm in the spectrum. The ultraviolet mercury lamp tube light source has the advantages of large volume, high luminous efficiency, short sterilization time, low price and the like.

A conventional low-pressure mercury lamp is shown in fig. 1, and has a far-field distribution of light intensity that is generally an isotropic uniform distribution of 360 degrees.

In order to improve the outgoing efficiency of the lamp tube through the shutter, a converging lens can be arranged between the shutter and the mercury lamp tube, and the purpose is to converge the emitted light emitted from the front side of the lamp tube. The distance between the lens and the lamp tube is one focal length time of the lens, so the emergent light is parallel light. The center of the lens, the center of the lamp tube and the center of the shutter are in a line of three points. So that the above-mentioned parallel light passes through the louver with the highest efficiency.

Any angle, such as-90 to 90 degrees, may be achieved by rotating the reflector shade, as shown in fig. 3. In which case the housing does not require louvers and is high in uv transmission coefficient or has no housing.

In addition to the described way of rotating the light-reflecting shade, it is also possible to rotate the louvers with a high uv reflectivity at the same time, at which time the housing is no longer of a material with a high uv transmission coefficient. As shown in fig. 4.

To ensure that the emergent light is not emitted to the air in the lower layer as much as possible, the orderly arranged louvers may be installed in a staggered manner, as shown in fig. 5, to ensure that the louver immediately below protrudes a little more than the louver in the upper layer. For example 0.5-3 cm. This ensures that light reflected downwardly from the upper louver is approximately re-reflected upwardly. This advantage is not apparent if the louvers themselves absorb uv light, and becomes apparent if louvers of high uv reflectivity are used.

The angle of the emergent light can be adjusted by adjusting the elevation angle of the whole box body. As shown in fig. 6, the elevation angle of the whole machine can be adjusted by a lifting screw at the bottom of the back of the shell. The corresponding elevation amplitude is different according to the length of the lifting screw.

The space can be divided into two cases according to the height: one is normal layer height with sufficient space. One is a lower layer height and a shorter space. The installation height of the sterilization apparatus can be as high as possible, close to the ceiling, corresponding to the case of a normal floor height, for example, 2.6-3 m and above. The radiation angle calculation refers to fig. 7. The calculation principle is that assuming a person of 1.9 meters standing at the farthest distance from the sterilization system, the area from his head to the ceiling should be a safe area where the ultraviolet radiation does not reach the human eyes, and the corresponding projected area is shown by the ABCD shaded area. The parabolic reflecting lampshade can rotate by an angle theta. And the area corresponding to the CDEF is an area where ultraviolet radiation is prohibited.

For the case of a low layer height, corresponding to the case of a layer height of e.g. 2-2.5 m or even less, the irradiation angle needs to be re-limited when the sterilisation apparatus has to be mounted close to the horizontal level of the human eye. As shown in fig. 8, ABCD is a region allowing irradiation of the projection. The design principle of the elevation angle theta is to ensure that ultraviolet light cannot enter human eyes when a person is closest to the equipment.

To achieve sterilization of the upper air layer with a projected area corresponding to the ABCD shadow area, the sterilization apparatus may be required to illuminate continuously over more than one angle θ. But may require the germicidal device to scan across a range of different theta angles. This can be visually calibrated by means of a laser synchronized with the irradiation angle. The starting position and the ending position of the scanning are defined according to the actual situation of a user conveniently. During the installation and debugging process, different theta angles are scanned, the moving positions of the laser spots on the wall surface and the ceiling are observed, and then the initial positions and the final positions are set. There is ultraviolet radiation between these two positions (theta angle) and no ultraviolet radiation outside these two angles.

In individual cases, the system can be used to sterilize the underlying air in a room, even the surface of an object. For example, as shown in fig. 10, the bed is sterilized. This can be used in an unattended condition or, in the presence of a person, to sterilize the patient on the bed after protection of a particular site. This is also achieved by adjusting the radiation angle θ. The calibration of the starting and ending positions may also be performed by the method of visualizing the laser spot described above.

For a room with a large area, more than one sterilization device can be installed on wall surfaces in different directions, so that the air on the upper layer in the room can be covered more completely, as shown in fig. 11.

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, a conventional tubular low-pressure mercury lamp is generally used. The ultraviolet radiation direction is perpendicular to the surface isotropy. It is generally converted into parallel light by a parabolic shaped mirror.

Fig. 2 illustrates a sterilization apparatus 200 using a mercury lamp 400 as an ultraviolet light source. Unlike before, 401 is a reflective lampshade with mirror aluminum with high ultraviolet reflection coefficient on the inner surface. When the angle of the emergent light needs to be adjusted, the reflecting lamp cover 401 rotates through the irradiation angle controller 105, and reflection within a range of +/-90 can be theoretically achieved. In this case, the front surface 101 and the bottom surface 104 of the housing may be made of a material having a high ultraviolet transmittance, such as quartz glass, or may be free of a shield.

Fig. 3 illustrates the mercury lamp 400 stationary and the rotating reflector lamp 401 rotating the direction of the outgoing beam of light while maintaining collimation. Reflection in the range of + -90 can be achieved in theory. For example, at-90 degrees, the illumination is applied directly below the device.

Fig. 4 illustrates the use of a 400 mercury lamp as the uv light source, with the front of the device housing further collimated using the louvers described above. If the louver 301 and the reflector lamp housing 401 can rotate synchronously, the collimation and direction rotation of the light rays can be realized. Of course, the louver 301 and the reflector housing 401 may be fixed.

Fig. 4 depicts two different configurations of louvers 301. The first is that the blind slats 302 are aligned from top to bottom and left to right. The second is that the blind slats 302 move horizontally and rightwards from the upper position to the lower position, and the right movement distance is different from 0.5 cm to 3 cm. The benefit of this second configuration is to further block light that may be impinging downward, trying to ensure that light 404 is reflected upward.

Fig. 4 also illustrates that a condensing lens 403 may be placed between the louver 301 and the mercury tube 400 in order to condense the emitted light from the front of the tube 400. The distance between the lens 403 and the lamp tube 400 is one focal length of the lens, so that the emergent light is parallel light. The center of lens 403, the center of lamp 400 and the center of louver 301 are in line of three points. So that the above-mentioned parallel light passes through the louver with the highest efficiency.

Fig. 6 illustrates another method of adjusting the direction of light. Regardless of the direction of the louvers and reflectors, the lifting screws below the housing of the device 200 can adjust the elevation angle of the housing by varying the distance between the lower edge of the housing and the wall, thereby adjusting the emitted light 404.

Fig. 7 illustrates a schematic view of the sterilization of air in the upper space of a room during operation of the sterilization system in the upper space. The sterilizing apparatus 200 or 300 may be installed at a height as high as possible, close to the ceiling. The radiation angle calculation principle is that a person of 1.9 meters is assumed to stand in a room at the farthest position from the sterilization system, and from the top of his head to the ceiling, an area where radiation can be performed is an area where ultraviolet radiation does not irradiate the human eyes, and the corresponding projection area is shown by the area of ABCD shadow. The angle at which the reflector lamp housing 401 can be rotated is shown as θ. And the area corresponding to the CDEF is an area where ultraviolet radiation is prohibited.

Fig. 8 illustrates the operation of the sterilisation system in a lower story height space for air sterilisation of the upper room space of a room for the case of a lower story height, corresponding to the case of a story height of e.g. 2-2.5 m or even less, when the sterilisation apparatus 200 or 300 has to be mounted close to the level height of the human eye, requiring re-limiting of the radiation angle. As shown in fig. 8, ABCD is a region allowing irradiation of the projection. The design principle of the elevation angle theta of the reflector lamp housing 401 is to ensure that ultraviolet light can not enter human eyes when a person is closest to the device.

To achieve sterilization of the upper air layer with a projected area corresponding to the ABCD shadow area, the sterilization apparatus may be required to illuminate continuously over more than one angle θ. But may require the germicidal device to scan across a range of different theta angles. This can be visually calibrated by means of a laser synchronized with the irradiation angle. The starting position and the ending position of the scanning are defined according to the actual situation of a user conveniently. During the installation and debugging process, different theta angles are scanned, the moving positions of the laser spots on the wall surface and the ceiling are observed, and then the initial positions and the final positions are set. There is ultraviolet radiation between these two positions (theta angle) and no ultraviolet radiation outside these two angles.

Fig. 9 illustrates the installation of the sterilizing apparatus 200 or 300 above the door of the enclosed space. Fig. 10 illustrates the installation of the sterilizing apparatus 200 or 300 above the bed in the enclosed space. In the individual case depicted in fig. 10, the system can be used to sterilize the underlying air in the room, and even the surface of objects. For example, the bed is sterilized. This can be used in an unattended condition or, in the presence of a person, to sterilize the patient on the bed after protection of a particular site. This is also achieved by adjusting the radiation angle θ. The calibration of the starting and ending positions may also be performed by the method of visualizing the laser spot described above.

For a room with a large area, more than one sterilization device 200 or 300 can be installed on wall surfaces in different directions, so that the air on the upper layer of the room can be covered more completely. Under the action of a plurality of sterilizing devices as shown in fig. 11, the uniform and complete covering of the upper air layer of the whole room close to the ceiling can be realized (the dotted ABCD line in fig. 11 represents the space between the plane and the ceiling), and the sterilizing efficiency is highest.

The equipment for efficiently sterilizing the air in the space by utilizing the ultraviolet rays irradiates microorganisms such as bacteria and viruses by the short-wave ultraviolet rays by virtue of the convection of the air, so that the DNA structures of the microorganisms are damaged, and the microorganisms die or lose the reproductive capacity. Can effectively inhibit the bacterial amount in the air and achieve the effective circulating sterilization effect. The equipment can be safely used by people under the condition, cannot cause radiation damage to human eyes and skin, realizes man-machine coexistence, and is particularly suitable for public places such as hospitals, schools, offices, stations, terminal buildings and the like, and vehicles such as automobiles, trains, airplanes and the like.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. 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 appended 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 hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.

Claims (6)

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 reflecting lampshade to rotate so as to adjust the irradiation angle of the mercury lamp tube;

the irradiation angle controller comprises a rotating shaft and a driving motor, the rotating shaft is arranged on the back surface of the reflecting lamp shade, and the front surface of the reflecting lamp shade is opposite to the radiation surface of the equipment shell; the driving motor drives the rotating shaft to rotate;

a shutter comprising a shutter drive and a plurality of louvers having a reflective coating; the plurality of window leaves are arranged at the outer edge of the reflective lampshade and distributed along the trend of the mercury lamp tube, and the louver driving device drives the window leaves to swing;

the device also comprises a device shell, and the reflective lamp shade is arranged in the device shell; 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.

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-machine coexisting ultraviolet lamp irradiation system for sterilization of air at an upper space as recited in claim 1, wherein all of the outer edges of the louvers of said louver are disposed flush or sequentially inclined.

4. The human-computer coexisting ultraviolet lamp irradiation system for sterilizing the upper air of the space as recited in claim 1, 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.

5. The human-machine coexisting ultraviolet lamp tube irradiation system for sterilization of upper air in space as set forth in claim 1, 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.

6. The human-computer coexisting ultraviolet lamp tube irradiation system for sterilizing the air at the upper layer of the space as recited in claim 1, 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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