阅读说明：本技术 一种人机共存的空气病毒灭活装置 (Man-machine coexisting air virus inactivation device ) 是由 李虞锋 于 2021-07-26 设计创作，主要内容包括：本发明公开一种人机共存的空气病毒灭活装置,包括设置在封闭或半封闭空间内的壁挂式病毒灭活设备,所述病毒灭活设备包括紫外光源和光线调节件；所述紫外光源包括紫外LED灯珠；所述光线调节件包括能调节紫外LED灯珠发出光线辐射角度的前置反射镜；前置反射镜设置在紫外LED灯珠发射光线前方,且前置反射镜靠近紫外LED灯珠一端的位置低于远离紫外LED灯珠一端的位置,前置反射镜较高的一端至少与紫外LED灯珠发射的部分光线交汇。该系统能够大幅度增强设备的紫外线总输出功率,更好地覆盖靠近设备的上层空间以及设备后方空间,从而实现全方位的病毒灭活和人机共存。(The invention discloses a man-machine coexisting air virus inactivation device, which comprises wall-mounted virus inactivation equipment arranged in a closed or semi-closed space, wherein the virus inactivation equipment comprises an ultraviolet light source and a light ray adjusting piece; the ultraviolet light source comprises an ultraviolet LED lamp bead; the light ray adjusting piece comprises a front reflector capable of adjusting the radiation angle of light emitted by the ultraviolet LED lamp beads; the front reflector is arranged in front of the ultraviolet LED lamp bead for emitting light, the position of the front reflector close to one end of the ultraviolet LED lamp bead is lower than the position of the front reflector close to one end of the ultraviolet LED lamp bead, and the higher end of the front reflector is at least crossed with part of light emitted by the ultraviolet LED lamp bead. The system can greatly enhance the total ultraviolet output power of the equipment, and better cover the upper space close to the equipment and the rear space of the equipment, thereby realizing omnibearing virus inactivation and man-machine coexistence.)

1. A man-machine coexisting air virus inactivation device is characterized by comprising wall-mounted virus inactivation equipment (004) arranged in a closed or semi-closed space, wherein the virus inactivation equipment (004) comprises an ultraviolet light source and a light ray adjusting piece;

the ultraviolet light source comprises an ultraviolet LED lamp bead (001);

the light ray adjusting piece comprises a front reflector capable of adjusting the radiation angle of light emitted by the ultraviolet LED lamp bead (001); leading speculum setting is in ultraviolet LED lamp pearl (001) transmission light the place ahead, and the position that leading speculum is close to ultraviolet LED lamp pearl (001) one end is less than the position of keeping away from ultraviolet LED lamp pearl (001) one end, and the higher one end of leading speculum intersects with the partial light of ultraviolet LED lamp pearl (001) transmission at least.

2. The human-computer coexisting air virus inactivation device according to claim 1, wherein the ultraviolet LED lamp beads (001) are small-angle or medium-angle ultraviolet light sources with emission angles not exceeding (60) degrees, and the ultraviolet LED lamp beads (001) are packaged by aspheric lenses or spherical lenses.

3. The human-computer coexisting air virus inactivation device according to claim 1, wherein the ultraviolet LED lamp beads (001) are arranged in a single row in a transverse array.

4. The human-computer coexisting air virus inactivation device according to claim 1, wherein the length of the front reflector is not less than the length of the array of ultraviolet LED lamp beads (001).

5. The human-computer coexisting air virus inactivation device according to claim 1, wherein the highest edge of the front reflector is not lower than the light emission center line of the ultraviolet LED lamp bead (001) in the vertical direction.

6. The human-computer coexisting air virus inactivation device according to claim 1, wherein the front reflector is a plane reflector (002) or a cambered reflector (005).

7. The human-computer coexisting air virus inactivation device according to claim 6, wherein the cambered mirror (005) cambered surface satisfies: any point on the light covering arc reflector (005) is tangent, and the tangent and the ultraviolet LED lamp bead are on the same side of the arc reflector.

8. The human-computer coexisting air virus inactivation device according to any one of claims 1 to 7, wherein the front reflector is a mirror aluminum profile, or a mirror aluminum sheet adhered to or embedded in the surface of another profile.

9. The human-computer coexisting air virus inactivation device according to any one of claims 1 to 7, further comprising a visual calibration device disposed within the ultraviolet light source, the visual calibration device being configured to emit a laser spot or a laser positioning line to calibrate a pre-reflector.

10. A human-machine coexisting air virus inactivation device according to any one of claims 1 to 7, wherein at least one of said virus inactivation devices (004) is in the same enclosed or semi-enclosed space; when the space is large, a plurality of virus inactivation devices (004) are adopted, and the plurality of virus inactivation devices (004) are arranged on the same horizontal plane.

Technical Field

The invention relates to the technical field of virus inactivation equipment, in particular to a man-machine coexisting air virus inactivation device.

Background

Air-borne transmission has been widely recognized as the primary means of transmitting COVID-19, and SARS-CoV-2 is highly susceptible to deep ultraviolet light, a technique that has been known for over 80 years. Ultraviolet virus inactivation is to destroy the molecular structure of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) of microbial cells by using UVC ultraviolet rays (mainly 240-280 nanometers) with virus inactivation, so that growing cells and (or) regenerative cells are killed, and the effect of sterilizing and inactivating viruses is achieved. One of the principles of virus inactivation is that all the surfaces of the articles and the possibly polluted environment objects, air conditioning systems, air and the like which are contacted with the patient should be strictly subjected to virus inactivation treatment. The sensitivity of the virus to ultraviolet light is clearly suggested in this protocol. More and more public places start using virus inactivation devices 004 and solutions based on uv technology.

At present, two main light sources of the ultraviolet virus inactivation lamp are provided: gas discharge light sources and solid state light sources. The gas discharge light source is mainly a low-pressure mercury lamp. The low-pressure mercury vapor mainly generates 254 nanometer UVC ultraviolet rays (the radiation efficiency is 30-60 percent) or 185 nanometer UVD ultraviolet rays (the radiation efficiency is 5-15 percent). 185 nm UVD ultraviolet ray does not have strong and effective physical virus inactivation effect, but can decompose oxygen in the air to combine to generate ozone, and the ozone has strong oxidation effect, but the ozone with too high concentration is harmful to human body, and chest distress and dizziness can be caused. In addition, the low-pressure mercury lamp has larger volume and a small amount of mercury pollution. The key bottleneck problem of the existing ultraviolet virus inactivation product generally exists is as follows:

1) the ultraviolet equipment is not compatible with human and machine, personnel must evacuate in the virus inactivation process, the use time and place are quite limited, and the equipment cannot actively inactivate and inhibit viruses all day long. Although some mercury lamps are provided with infrared induction protection devices, the mercury lamps can stop running when people or organisms are induced to break into the mercury lamps, infection hidden dangers are brought when the mercury lamps are stopped, and all-weather virus inactivation function is not achieved.

2) The solid light source is adopted to inactivate the virus, the distance is short, the range is small, the virus inactivation efficiency is low, the solid light source is only suitable for common bacteria, and the radiation measurement required by inactivation of the virus, particularly the new coronavirus, is difficult to achieve.

3) The safety of virus inactivation equipment needs to meet a series of national and international safety standards, and the ultraviolet irradiation intensity is generally considered internationally>10μW/cm²(microwatts/square centimeter) as effective virus inactivation intensity, radiation dose<0.2μJ/cm²(microjoules per square centimeter) is the safe dose (NIOSH). Domestic standard GB28235-2020 ultraviolet Virus inactivating device sanitary requirement 1 m ultraviolet irradiation intensity>70μW/cm²(microwatts per square centimeter), safety Standard<5μW/cm²(microwatts per square centimeter). Without special optical design, it is difficult to achieve post-viral dose in the work area while ensuring the uv-leak exposure criteria of the safe area.

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.

The ultraviolet air virus inactivation system adopted at present uses a mercury lamp tube as a light source, and a cambered reflector with a parabolic shape is installed inside the system and generally consists of a mirror surface aluminum reflector. The reflector reflects a part of light emitted by the lamp tube into parallel light to be emitted. The lamp has a large geometric dimension, with a diameter of between 1 and 5cm, typically between 1.5 and 2 cm. It is not guaranteed that each ray passes through the focus of the parabolic mirror. Therefore, a common parabolic reflector cannot change all light rays into parallel light. In order to prevent non-parallel light rays from leaking to the lower layer of air below the device to irradiate human eyes, the design of a louver is adopted at the outermost layer of the device. Louver beam shaping systems typically have an anti-reflective or uv-absorbing coating that is intended to reduce the reflection of uv light at the surface of the louver and into the safe area for the human eye. At the same time, the depth or density of the blinds is designed, for example deeper (the lamp is far from the front surface of the device) or denser blinds, so as to reduce the light rays which are not parallel to the blinds, thus ensuring the safety of the eyes in the safety zone. However such coatings can severely reduce the total light output power. Assuming a louver with a reflectivity of only 20%, the uv light reflected once therein will be reduced to the previous 20%, and after 2 reflections will be reduced to the previous 4%. The existing ultraviolet lamps (T5, T8, etc.) have large diameter and volume, so that all light rays cannot be parallelized by common optical design. Therefore, as long as light rays are not parallel to the louvers, they are almost reflected and lost between the louvers, and thus the total amount of light rays finally emitted, that is, the intensity of light irradiation output from the louvers to the outside of the apparatus is greatly reduced. In general, most existing superstructure uv fixtures are inefficient at creating a superstructure room viral inactivation zone, as housings and louvers designed to protect personnel in the occupied space can result in substantial loss of uv energy.

Another problem with mercury tube and louver based designs is that the beam shape output through the louver is mostly parallel light, or nearly parallel light with a small angle. There is a certain area in the upper space relatively close to the apparatus where no uv radiation is present. Although the area of the irradiation region becomes larger away from the apparatus, there is always a large portion of the leakage region above the working region where no ultraviolet rays are irradiated. As shown in fig. 1 and 2.

In addition, the light output face of such a device is the outer surface of the louver. This means that the space corresponding to the part of the device hanging from the outer surface of the blind is an area inaccessible to ultraviolet light, resulting in the loss of the virus-inactivating coating.

Another problem with mercury tube and louver based designs is that some of the light is emitted downwards due to poor confinement of some of the light, and the height of the suspension of such devices is typically required to be relatively high, for example 2.1-2.3 meters from the ground, in order to limit the intensity of the radiation emitted downwards into the safe zone, thus requiring a floor height in space, for example, in excess of 3 meters. It is not suitable for special industries such as space flight, aviation, moving vehicles and narrow space in underwater ships.

Disclosure of Invention

To solve the above problems of efficiency and safety, the present invention proposes an air virus inactivation device that does not require louvers for beam confinement. The system can greatly enhance the total ultraviolet output power of the equipment, and better cover the upper space close to the equipment and the rear space of the equipment, thereby realizing omnibearing virus inactivation and man-machine coexistence.

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

a man-machine coexisting air virus inactivation device comprises wall-mounted virus inactivation equipment arranged in a closed or semi-closed space, wherein the virus inactivation equipment comprises an ultraviolet light source and a light ray adjusting piece;

the ultraviolet light source comprises an ultraviolet LED lamp bead;

the light ray adjusting piece comprises a front reflector capable of adjusting the radiation angle of light emitted by the ultraviolet LED lamp beads; the front reflector is arranged in front of the ultraviolet LED lamp bead for emitting light, the position of the front reflector close to one end of the ultraviolet LED lamp bead is lower than the position of the front reflector close to one end of the ultraviolet LED lamp bead, and the higher end of the front reflector is at least crossed with part of light emitted by the ultraviolet LED lamp bead.

As a further improvement of the invention, the ultraviolet LED lamp bead is a small-angle or medium-angle ultraviolet light source with an emission angle not exceeding a certain degree, and an aspheric lens or a spherical lens is adopted for packaging the ultraviolet LED lamp bead.

As a further improvement of the invention, the ultraviolet LED lamp beads are arranged in a single-row transverse array.

As a further improvement of the invention, the length of the front reflector is not less than the array length of the ultraviolet LED lamp beads.

As a further improvement of the invention, the highest edge of the front reflector is not lower than the light-emitting central line of the ultraviolet LED lamp bead in the vertical direction.

As a further improvement of the invention, the front reflector is a plane reflector or a cambered surface reflector.

As a further improvement of the invention, the cambered surface of the cambered reflector meets the following requirements: any point on the cambered reflector is covered by the light rays to be tangent, and the tangent and the ultraviolet LED lamp beads are arranged on the same side of the cambered reflector.

As a further improvement of the invention, the front reflector is a mirror aluminum profile, or a mirror aluminum sheet is adhered to or embedded into the surface of another profile.

As a further improvement of the invention, the ultraviolet light source calibration device further comprises a visual calibration device, wherein the visual calibration device is arranged in the ultraviolet light source and is used for emitting laser spots or laser positioning lines to calibrate the front reflector.

As a further development of the invention, at least one of said virus inactivation devices within the same enclosed or semi-enclosed space; when the space is large, a plurality of virus inactivation devices are adopted and arranged on the same horizontal plane.

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

the air virus inactivation device of the invention controls the ultraviolet radiation direction more strictly through the light ray adjusting part, can completely eliminate the ultraviolet ray leaked to the safety zone, and realizes human-computer coexistence. The air sterilizer is convenient to hang on any wall surface and directly sterilizes the air in the space. Can be switched on and off instantly and repeatedly, and has long service life, high stability and low energy consumption. The device does not need the shutter structure in front of the light source, reduces the absorption of ultraviolet rays, greatly enhances the total ultraviolet output power of the equipment, and better covers the upper space close to the equipment and the space behind the equipment, thereby realizing omnibearing virus inactivation. Meanwhile, the weight and the volume of the equipment are greatly reduced. The invention solves the problem that the upper layer air ultraviolet disinfection equipment can not cover the space right above the equipment at present, and also fills the problem of coverage omission above a narrowly-divergent working area.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. In the drawings:

the device of fig. 1 outputs a ray propagation diagram under parallel ultraviolet rays.

The device of fig. 2 outputs a schematic ray propagation diagram under narrow divergent ultraviolet rays.

FIG. 3 is a schematic diagram (left) of a small-angle (e.g., 10-30 degrees) surface-mount ultraviolet LED lamp bead structure covering a Dome shape and a far-field distribution (right) of light intensity thereof;

FIG. 4 is a schematic diagram (left) of a medium-angle (e.g., 30-60) surface-mounted UV LED lamp bead structure covered with a spherical lens of general shape and a far-field distribution (right) of the light intensity thereof;

FIG. 5 is a schematic view of the light propagation of a UV light source emitting at a 60 degree angle;

FIG. 6 is a schematic view of the light propagation of a UV light source emitting at 30 degrees;

FIG. 7 is a schematic diagram of an apparatus including a front plane mirror;

FIG. 8 is a schematic view of the light propagation during operation of an apparatus comprising a front plane mirror;

FIG. 9 contains a schematic view of an apparatus with a front cambered mirror;

FIG. 10 is a schematic view of the light propagation during operation of an apparatus comprising a front cambered reflector;

FIG. 11 shows a schematic view of a light ray propagation by an ultraviolet light source with an emission angle of 60 degrees in conjunction with a front plane ultraviolet reflector;

FIG. 12 is a schematic view showing the light propagation when the light intensity is strong in a case where an ultraviolet light source with an emission angle of 60 degrees is combined with a front plane ultraviolet reflector;

FIG. 13 is a schematic view showing the light propagation of two oppositely facing UV light sources with 60 degree emission angle in combination with a front plane UV reflector under strong light intensity;

FIG. 14 is a schematic view of a light ray propagation diagram of an ultraviolet light source with an emission angle of 30 degrees in cooperation with a cambered surface ultraviolet reflector at the front;

FIG. 15 is a schematic view showing the light propagation when the light intensity is strong in an ultraviolet light source with an emission angle of 30 degrees and a cambered surface ultraviolet reflector at the front;

FIG. 16 is a schematic view showing the light propagation of two face-to-face opposed 30 degree UV light sources in conjunction with a front cambered UV reflector when the light intensity is strong;

FIG. 17 is a schematic view showing the light propagation when the light intensity is strong, in which two ultraviolet light sources with 30-degree emission angles are oppositely arranged and another cambered ultraviolet reflector is arranged in front of the ultraviolet light sources.

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.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

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 discloses an open human-computer coexisting air virus inactivation device, which comprises wall-mounted virus inactivation equipment 004 arranged on a wall surface 006, a cabin body and a cabinet body of a closed or semi-closed space, wherein the virus inactivation equipment 004 comprises an ultraviolet light source and a light ray adjusting piece;

the ultraviolet light source comprises an ultraviolet LED lamp bead 001, a circuit board, a power adapter, a heat dissipation section bar and a fan;

the light ray adjusting piece can adjust the radiation angle of the light rays emitted by the ultraviolet light source.

The ultraviolet LED lamp bead 001 is a small-angle or medium-angle ultraviolet light source with an emission angle not more than 60 degrees, and the ultraviolet LED lamp bead 001 is packaged by an aspheric lens or a spherical lens.

Preferably, the ultraviolet LED lamp beads 001 are arrayed in a single row and transversely arranged.

As preferred embodiment, set up plane mirror 002 in the positive place ahead of ultraviolet LED lamp pearl 001 array, level mirror length is no less than ultraviolet LED lamp pearl 001 array length. The position of the plane reflector 002 near one end of the ultraviolet LED lamp bead 001 is lower than the position far away from one end of the ultraviolet LED lamp bead 001. The higher one end of plane reflector 002 intersects with some light of ultraviolet LED lamp pearl 001 transmission at least. The plane reflector 002 reflects a part of the light emitted downward or the whole light emitted downward upward from the LED.

Further improve, ultraviolet LED lamp pearl 001 array dead ahead sets up cambered surface speculum 005, and cambered surface speculum 005 length is no less than ultraviolet LED lamp pearl 001 array length. The position of the cambered reflector 005 close to one end of the ultraviolet LED lamp bead 001 is lower than the position of the cambered reflector 005 far away from one end of the ultraviolet LED lamp bead 001. The higher end of the cambered reflector 005 is at least intersected with part of light emitted by the ultraviolet LED lamp bead 001. The curved reflector 005 reflects a part of the light emitted downward from the LED or all of the light emitted downward upward.

Preferably, the highest edge of the plane reflector 002 or the cambered surface reflector 005 is not lower than the central line of the ultraviolet LED lamp bead 001 array in the vertical direction. That is to say, the highest point of each of the plane reflector 002 or the cambered surface reflector 005 is not lower than the central position of each lamp bead facing the highest point.

Preferably, the direction of the arc reflector 005 is convex for the ultraviolet LED lamp bead 001, that is, a tangent line is made at any point on the mirror surface of the arc reflector 005 covered by light, and the tangent line and the LED are on the same side of the reflector.

Preferably, the plane and arc reflector 005 is a mirror aluminum profile.

The plane and arc reflector 005 is a mirror aluminum sheet adhered to or embedded in the surface of another profile.

The device further comprises a visual calibration device, the visual calibration device is arranged in the equipment shell, and the visual calibration device is used for emitting laser spots or calibrating the front reflector by the laser positioning line.

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

The invention provides an air virus inactivation device based on an ultraviolet LED (light-emitting diode), wherein virus inactivation equipment 004 comprises an ultraviolet light source consisting of a deep ultraviolet LED and a front reflector (comprising a plane reflector 002 and an arc reflector 005).

The light emitting part of the ultraviolet light source is formed by deep ultraviolet LED lamp beads 001. Ultraviolet LED lamp pearl 001 comprises chip, support and adds the lid lens. The lens may be planar, aspheric, spherical or other special lens. The function of different lens shapes is to assemble the light that the LED chip sent through lens to realize the lamp pearl emission angle less than chip emission angle. The lens that present extensively adopted can be in 120 degrees with lamp pearl emission angle restraint. A part of the lens can restrict the emission angle of the lamp bead within 60 degrees. Fewer lenses can constrain the bead emission angle to within 30 degrees. The extreme special lens can restrain the emission angle of the lamp bead within 15 degrees.

Fig. 3 (left diagram) shows a schematic structural diagram of a surface-mounted ultraviolet LED lamp bead 001 with an aspheric lens. Fig. 3 (right diagram) shows the far field distribution of the ultraviolet LED lamp bead 001 adopting the structure, wherein the emission angle of the light intensity is narrow, for example, 15-30 degrees.

Fig. 4 (left diagram) shows a schematic structural diagram of a surface-mounted ultraviolet LED lamp bead 001 with a spherical lens. Fig. 4 (right graph) shows that the emission angle of the light intensity of the ultraviolet LED lamp bead 001 adopting the structure is wide and the far field distribution is wide, such as 30-60 degrees.

The following description is given with respect to the case where the emission angles of the lamp beads are 60 degrees and 30 degrees, and the corresponding cases of the lamp beads with other emission angles, for example, the lamp beads with 90-120 degrees, are not repeated.

Fig. 5 shows an ultraviolet light source with an emission angle of 60 degrees, which is located 1.8 meters from the ground and 0.6 meters from the ceiling and is located on the wall surface 006, and the coverage of the emitted light in the vertical space is observed laterally in a space with a length of 4 meters. The vertical space from the ceiling downward to the light emitting center of the ultraviolet light source is 0.6 meter and the vertical space from the light emitting center of the ultraviolet light source downward to the ground is 1.8 meters. It can be seen that half of the light emitted from the uv light source enters the safety zone without any optical element modification to the light.

Fig. 6 shows an ultraviolet light source with an emission angle θ of 30 degrees, which is located 1.8 meters from the floor and 0.6 meters from the ceiling and is located on the wall surface 006, and the emitted light coverage is observed laterally in a space with a length of 4 meters. Likewise, half of the light emitted from the uv light source enters the safe zone without any other optical element modifying the light. In order to reduce the light entering the safe area and to make it enter the working area, the light emitted by the ultraviolet light source needs to be restrained.

Fig. 7 is a schematic view of a virus inactivation apparatus 004 incorporating a front plane mirror 002. Ultraviolet LED lamp pearl 001 single-row array is laid at the equipment openly, and ultraviolet LED lamp pearl 001 that here adopted is the lamp pearl that emission angle is great, for example 60 degrees. The equipment shell is provided with a heat dissipation hole and a fan 003. A plane reflector 002 is arranged right in front of the ultraviolet LED lamp bead 001 array. The front reflector is fixed by a mounting rack, and the mounting rack can also adopt a mounting rack with a reflecting surface to prevent ultraviolet rays from being exposed.

Fig. 8 is a schematic view of the light propagation of fig. 7 illustrating the operation of the device. Both ends of the plane mirror 002 are respectively denoted by A, B. The luminous center of the ultraviolet LED lamp bead 001 is used as a boundary, and the emitted light of the LED can be divided into an upward part and a downward part. Under one condition, the B end of the plane mirror 002 cannot exceed the light emitting center of the ultraviolet LED lamp bead 001, so that upward light emitted by the ultraviolet LED lamp bead 001 is prevented from being blocked by the plane mirror 002. For simplicity, the propagation paths of downward rays (r, c) and upward rays (r, c) are described by way of example. Light rays (i) are reflected to C, D points of the ceiling respectively after passing through the plane mirror 002 (the area between C, D is defined as an area 1), and light rays (ii) are not blocked by the plane mirror 002 and directly irradiate to E, F points of the ceiling (the area between E, F is defined as an area 2). The plane reflector 002 functions to split the light beam emitted from the LED and to emit the downward-propagating light to the end of the ceiling near the device (area 1). While the light rays that are not reflected by the mirror, follow the original path to the ceiling region 2. Region 1 and region 2 together constitute a work area.

The angle of the placement of the flat mirrors is related to the volume of the device and the height of the top of the device from the ceiling. The position of the reflector can equally divide the LED light beam or unequally divide the LED light beam. For example, with point B slightly higher than the center of light emission of uv LED bead 001, the portion of light reflected will be greater than 1/2 of the total output of uv LED bead 001. Whereas point B drops slightly, the portion of the reflected light will be less than 1/2. The design rule here is related to the emission angle of ultraviolet LED lamp bead 001. If the emission angle of ultraviolet LED lamp bead 001 is small, then when there is no reflector, the distance from wall 006 where the device is located to the boundary of the ceiling irradiated by the LED is large, and then all the downward-emitted light and a part of the originally upward-emitted light need to be reflected to the ceiling, and the position of the corresponding B point needs to be higher than the light-emitting center. On the contrary, if the emission angle of the ultraviolet LED lamp bead 001 is large, the position of the corresponding B point may not be higher than the light emitting center.

The angle of the placement position of the plane mirror 002 is also related to the positions of the regions 1 and 2, and the design rule is to ensure that the distance between the regions 1 and 2 is minimized and even properly overlapped. For example, the point D and the point E are overlapped, and the effect of completely covering the ceiling of the working area is achieved.

Fig. 9 is a schematic view of a virus inactivation apparatus 004 comprising a front cambered surface mirror 005. Ultraviolet LED lamp pearl 001 array ultraviolet LED lamp pearl 001 is laid at the equipment openly, and ultraviolet LED lamp pearl 001 that here adopted is the less lamp pearl of emission angle, for example 30 degrees. The equipment shell is provided with a heat dissipation hole and a fan 003. An arc reflector 005 is arranged right in front of the ultraviolet LED lamp bead 001 array.

Fig. 10 is a schematic view of the light propagation of fig. 9 during operation of the device. The luminous center of the ultraviolet LED lamp bead 001 is used as a boundary, and the emitted light of the LED can be divided into an upward part and a downward part. Under one condition, the end B of the cambered reflector 005 cannot exceed the light-emitting center of the ultraviolet LED lamp bead 001, so that upward light rays emitted by the ultraviolet LED lamp bead 001 are prevented from being blocked by the plane mirror. For simplicity, the propagation paths of the downward rays 1,2 and the upward rays 3,4 are described here by way of example. The light rays 1 and 2 pass through the cambered mirror 005 and are reflected to C, D points of the ceiling (the area between C, D is defined as area 1), and the light rays 3 and 4 are not blocked by the cambered mirror 005 and directly irradiate E, F points of the ceiling (the area between E, F is defined as area 2). The curved reflector 005 here functions to split the light beam emitted by the LED, reflecting the light rays traveling downwards to the end of the ceiling close to the device, and the light rays traveling upwards to the end of the ceiling far from the device.

The angle at which the curved mirror 005 is placed is related to the volume of the device and the height of the top of the device from the ceiling. The position of the reflector can equally divide the LED light beam or unequally divide the LED light beam. For example, by slightly raising point B above the center of the light emission of uv LED bead 001, the portion of the light reflected will be greater than 1/2 of the total output of the center of the light emission of uv LED bead 001. Whereas point B drops slightly, the portion of the reflected light will be less than 1/2. The design rule here is related to the emission angle of ultraviolet LED lamp bead 001. If the emission angle of ultraviolet LED lamp bead 001 is small, then when there is no reflector, the distance from wall 006 where the device is located to the boundary of the ceiling irradiated by the LED is large, and then all the downward-emitted light and a part of the originally upward-emitted light need to be reflected to the ceiling, and the position of the corresponding B point needs to be higher than the light-emitting center. On the contrary, if the emission angle of the ultraviolet LED lamp bead 001 is large, the position of the corresponding B point may not be higher than the light emitting center.

The angle of the placement of the curved mirror 005 is also related to the positions of the areas 1 and 2, and the design rule tries to ensure that the distance between the areas 1 and 2 is minimal, or even properly overlapping. For example, the point D and the point E are overlapped, and the effect of completely covering the ceiling of the working area is achieved.

The reason why the curved reflector 005 is used instead of the plane reflector 002 is that the LED emission angle is small, and a large coverage of the area 1 can be obtained with the curved reflector 005. With the flat mirror 002, the coverage of the corresponding area 1 is smaller. Resulting in a portion of the ceiling that is not illuminated by light.

Fig. 11 shows the simulated distribution of light emitted by the light source in a vertical plane in a space with a length of 4 meters and a height of 2.4 meters, wherein an ultraviolet LED lamp bead 001 with a large emission angle (for example, an emission angle of 60 degrees) is used as the light source, and the device is hung on a wall 006 0.6 meter away from a ceiling and 1.8 meters away from the ground. A space with a lower layer height is deliberately chosen as an example here. For the space with higher height of the common layer, the invention has more safety, and therefore, the description is not repeated. The following application scenarios are all expressed based on the space with lower layer height.

Fig. 12 shows the light distribution when the LED light is strong in the case described in fig. 11.

Fig. 13 shows the distribution of light when the light intensity is strong in a space with a length of 8 m and a height of 2.4 m, which is divided between two opposite wall surfaces 006, and two ultraviolet light sources with an emission angle of 60 degrees are arranged in a face-to-face manner, in cooperation with the front plane mirror 002.

Fig. 14 shows the simulated distribution of light emitted by the light source in a vertical plane in a space with a length of 4 meters and a height of 2.4 meters, wherein an ultraviolet LED lamp bead 001 with a large emission angle (for example, an emission angle of 30 degrees) is used as the light source, and the device is hung on a wall 006 0.6 meter away from a ceiling and 1.8 meters away from the ground.

Fig. 15 shows the light distribution when the LED light is strong in the case described in fig. 14.

Fig. 16 shows the distribution of light when the light intensity is strong, with the ultraviolet light source emitting at 30 degrees, placed on two opposite walls 006, and the front curved mirror 005. In order to ensure the inactivation effect in a large-area space, a plurality of virus inactivation devices 004 can be arranged and are uniformly arranged on the same layer above the space.

Fig. 17 shows the distribution of light when the intensity of light is strong, with an alternative curved reflector 005 in front of an ultraviolet light source positioned on two opposing walls 006, with two opposing angles θ of 30 degrees. The curved surface mirror 005 here is slightly different from the curved surface ultraviolet reflector described in fig. 14 to 16 in shape and placement position, and can realize irradiation to the device rear wall surface 006. Further enlarging the irradiation range and reducing the wall surfaces 006 that are not irradiated.

The system can be instantly lightened after intelligent control is added, and the system has the characteristics of intelligence, safety, no need of preheating, no generation of ozone, no mercury, stable light output, small volume, light weight, easiness in integration and addition in the conventional equipment, obvious advantages in performance and environmental protection, low energy consumption and cost, coexistence of man and machine, and normal operation of the equipment 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.

The equipment for efficiently sterilizing the air in the space by utilizing the ultraviolet rays irradiates microorganisms such as bacteria, viruses and the like by the 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. This equipment can realize the safe handling under the condition of people, can not cause radiation damage to people's eye and skin, realizes man-machine coexistence, and specially adapted is airtight relatively, the intensive space of personnel, for example public place: factories, hospitals, schools, government agencies, health care, emergency hospital deployment, public area and transportation equipment disinfection, and the like; outdoor: large-scale comprehensive super, stadiums, exhibitions, transportation hubs and the like, shelter hospitals; indoor: movie theaters, tea houses, hotels, restaurants, casinos, etc.; livestock breeding places: piggeries, chicken houses, and the like. The method is particularly suitable for being applied to special narrow spaces, such as space flight, aviation, moving vehicles and underwater vessels under the condition of low space layer height.

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.