RU2764511C1 - Individual uv mask-type recirculator - Google Patents

Abstract

FIELD: protective devices.

SUBSTANCE: invention relates to the field of protective devices, primarily of the respiratory system against bacteria and viruses. An individual ultraviolet mask-type recirculator includes a mask with a first hole and a cleaning unit containing a housing with a second hole and with an internal cavity, the second opening of the housing being mated with the first opening of the mask. The housing is connected to the lid having third openings, while the first UV source is installed in the housing cavity, connected to the power and control unit. A first diaphragm with fourth holes and a second diaphragm with fifth holes are installed in the inner cavity of the housing between the second hole and the first ultraviolet radiation source, while the third holes in the cover, fourth holes in the first diaphragm and fifth holes in the second diaphragm are located so that their axial projections on the plane do not coincide with each other, and the generators of the fourth holes in the first diaphragm and the fifth holes in the second diaphragm are located at angles to the planes of the first diaphragm and the second diaphragm, not equal to 90°. The cover is mounted on the body with the possibility of removability and adjusting movement of the cover around the axis of symmetry.

EFFECT: increasing the effectiveness of protection against bacteria and viruses.

2 cl, 5 dwg

Description

The invention relates to the field of protective devices, primarily respiratory organs from bacteria and viruses.

Known respirator for protection against harmful gases, vapors and aerosols (RU 2165780). The respirator includes a filtering-absorbing system from a package of elastic filtering and absorbing materials. The filtering-absorbing system is made in the form of a filtering mask, the body of which is connected to goggles, an independent rubber obturator and a rubber mask holder. On the mask body in the frontal and chin parts there are two symmetrical folds, the width of each of which in the frontal part is 11±1% and in the chin 22±1% of the body perimeter. The invention relates to filtering personal respiratory protection and can be used in the field of labor protection of industrial workers with harmful working conditions, as well as in agriculture and at home when working with paints, pesticides and fertilizers. The disadvantage of this mask is its low effectiveness in protecting against bacteria and viruses, because. it contains only filter elements that do not allow to exclude the ingress of bacteria and viruses into the human body.

A respirator is known (RU 2580997), containing a mask body, a socket element configured to receive a filter cartridge and a filter cartridge having a first side part made with the possibility of a plug-in connection with the socket element, while the filter cartridge contains the first and second main surfaces, and wherein one or both major surfaces are fluid-permeable to allow air from the outside to enter the filter cartridge for filtration. The cartridge contains first and second main external surfaces through which air from the external environment passes to enter the internal gas space after passing through the filter medium. The filter media comprises four layers of filter particle media and four layers of gaseous filter media. The disadvantage of this mask is its low effectiveness in protecting against bacteria and viruses. it does not contain elements that destroy bacteria and viruses.

Known filtering facial respiratory mask with a replaceable component (RU 2600906). The invention relates to facial respiratory masks. The flat folded filtering respirator mask includes a reusable attachment system, a reusable frame and a replaceable filter element. The reusable attachment system is attached to the reusable frame, and the frame has first and second opposing panels forming a groove into which the replaceable filter element can be manually inserted to attach it to the reusable frame in a removable manner. The replaceable filter element based on the filter medium based on fibrous material can also be separated from the reusable frame by manually removing it from the groove. The proposed mask provides the possibility of reuse of all its parts, except for the filter component. The mask is designed to protect against dust, but only modestly reduces the flow of bacteria and viruses into the human respiratory tract.

This device was chosen as a prototype of the proposed solution.

The technical result of the invention is to increase the effectiveness of protection against bacteria and viruses.

This technical result is achieved by the fact that in an individual mask-type ultraviolet recirculator, including a mask with a first hole and a cleaning unit containing a body with a second hole and with an internal cavity, the second hole of the body is associated with the first hole of the mask, the body is connected to a cover having third holes, while the first source of ultraviolet radiation is installed in the housing cavity, connected to the power supply and control unit.

There is a variant in which at least one LED with a wavelength of 265 nm is used as the first source of ultraviolet radiation.

There is also a variant in which the first diaphragm with fourth holes and the second diaphragm with fifth holes are installed in the internal cavity of the housing between the second hole and the first source of ultraviolet radiation, while the third holes in the cover, the fourth holes in the first diaphragm and the fifth holes in the second diaphragm are located so that their axial projections onto the plane do not coincide with each other.

There is also a variant in which a layer of aluminum is deposited on the inner surface of the housing, on the cover, on the first diaphragm and on the second diaphragm.

There is also a variant in which a layer of titanium dioxide is applied on the inner surface of the body, on the cover, on the first diaphragm and on the second diaphragm.

There is also a variant in which at least one LED with a wavelength of 365 nm is used as the first source of ultraviolet radiation.

There is also a variant in which a piezoelectric module is installed between the first diaphragm and the second diaphragm, connected to the power supply and control unit.

There is also a variant in which the generatrices of the fourth holes in the first diaphragm and the fifth holes in the second diaphragm are located at angles to the planes of the first diaphragm and the second diaphragm that are not equal to 90°.

There is also a variant in which a second source of ultraviolet radiation is installed between the first diaphragm and the second diaphragm, connected to the power supply and control unit.

There is also a variant in which the cover is mounted on the housing with the possibility of removal and adjustment movement.

In FIG. 1 shows a diagram of the filter element of an individual mask-type antiviral recirculator.

In FIG. 2 shows an embodiment of the cover.

In FIG. 3 shows an embodiment of the first diaphragm.

In FIG. 4 shows an embodiment of the second diaphragm.

In FIG. 5 shows a variant of making holes in the first and second diaphragms at angles not equal to 90° to their surfaces.

An individual mask-type ultraviolet recirculator includes a mask 1 (Fig. 1) with a first hole 2 and a cleaning unit 3. The mask can be made in the form of soft plastic fitting the face. The cleaning unit 3 comprises a body 4 with a second opening 5 and an internal cavity 6, the second opening 5 of the body 4 being connected to the first opening 2 of the mask 1. Any thermoplastic plastic can be used as the material of the body 4. And in a particular case, you can use a light metal, such as aluminum or titanium. The body 4 can be connected to a cover 7 having third holes 8. The same material as the material of the body 4 can be used as the material of the cover 7. The connection of the body 4 to the mask 1, as well as the connection of the cover 7 to the body 4 can be screws, as well as in a non-separable version - adhesive (these connections are not shown in Fig. 1). Installation of cover 7 on body 4 with the possibility of removal and adjusting movement around the axis of symmetry perpendicular to the plane of cover 7 can be provided by threaded connection of cover 7 and body 4 with subsequent fixation of cover 7 with a locking screw (not shown).

In the inner cavity 6 of the housing 4, the first source of ultraviolet radiation 9 is installed, connected to the power supply and control unit 10. At least one battery can be used as a battery, connected to a recharging socket, for example, a USB port (not shown). As the first source of ultraviolet radiation 9, at least one LED with a wavelength of 265 nm with a power of 20 mW - 50 mW can be used.

There is a variant in which the first diaphragm 11 with fourth holes 12 and the second diaphragm 13 with fifth holes 14 are installed in the inner cavity 6 of the housing 4 between the second hole 5 and the first source of ultraviolet radiation 9. The material of the first diaphragm 11 and the second diaphragm 13 can be used the same material as the material of the housing 4. The first diaphragm 11 and the second diaphragm 13 can be installed in the housing 4 integrally (as shown in Fig. 1) or with the possibility of removal, for example, by an interference fit (not shown). In this case, the third holes 8 in the cover 7, the fourth holes 12 in the first diaphragm 11 and the fifth holes 14 in the second diaphragm 13 are located so that their axial projections on the plane do not coincide with each other. It should be noted that the third holes 8, the fourth holes 12 and the fifth holes 14 may have a circular shape and be located at different diameters D1, D2, D3, as indicated in Fig.2, Fig. 3, fig. 4. In one of the options, D1 may be less than D2, which in turn is less than D3. But there may be other options for the shape of the holes, and their location. It is important that there is no direct air flow through all openings. In the case when the cover 7 is installed with the possibility of movement around the axis of symmetry perpendicular to the plane of the cover 7, it is possible to effectively increase the non-linearity of the air flow between the cover 7 and the first diaphragm 11 with a small number of third holes 8 and fourth holes 12 (for example, two).

There is also a variant in which an aluminum layer is applied on the inner surface of the body 4, on the cover 7, on the first diaphragm 11 and on the second diaphragm 13, which is in the range of 0.05 μm - 0.5 μm.

There is also a variant in which a layer of titanium dioxide is applied on the inner surface of the body 4, on the cover 7, on the first diaphragm 11 and on the second diaphragm 13, which is in the range of 1 μm - 10 μm. At the same time, at least one LED, RC35EO-UBE-AR with a wavelength of 365 nm and a power of 20 mW - 50 mW, can be used as the first source of ultraviolet radiation 9.

There is also a variant in which a piezoelectric module 15 is installed between the first diaphragm 11 and the second diaphragm 13, connected to the power supply and control unit 10. As the piezoelectric module 15, you can use the piezo emitters ЗП-1 or ЗП-3.

There is also a variant in which the generators of the fourth holes 12 (Fig. 5) in the first diaphragm 11 and the fifth holes 14 in the second diaphragm 13 are located at angles to the planes of the first diaphragm 11 and the second diaphragm 13 not equal to 90°. The most preferred variant of the angles of the forming holes may be in the range of 30° - 60°.

There is also a variant in which a second source of ultraviolet radiation 16 is installed between the first diaphragm 11 and the second diaphragm 13, connected to the power supply and control unit 10. At least one LED with a wavelength of 265 nm can be used as the second source of ultraviolet radiation 16 , or at least one LED with a wavelength of 365 nm. An effective option is to use as the first source of ultraviolet radiation 9 and the second source of ultraviolet radiation 16 two sources of ultraviolet radiation with different wavelengths: 265 nm and 365 nm, or 365 nm and 265 nm.

An audible buzzer 17 can be included in the device, signaling the discharge of the batteries.

The device works as follows. When inhaled (in a complete device with two diaphragms), "contaminated" air passes through the third holes 8, the fourth holes 12, the fifth holes 14 and the second hole 5. Inside the purification unit 3, the "contaminated" air interacts with titanium dioxide activated by ultraviolet radiation (see . in detail "Light and titanium purify water and air", News of science and technology, 02/09/2020, nkj.ru, news 38110), which is applied to the inner surface of the body 4, cover 7 and diaphragms 11 and 13, being cleaned up to 90-99 % of all organic compounds, including bacteria and viruses. An additional effect on the destruction of bacteria and viruses gives the use of sources of ultraviolet radiation 9 and 16, located inside the housing 4, which directly destroy bacteria and viruses.

When exhaling, a similar process of air purification occurs.

For preventive cleaning of the device, you can use the piezoelectric module 15. In this case, you can disconnect the body 4 from the mask 1, and the roof 7 - from the body 4. Next, turn on the piezoelectric module 15, and supply air flow inside the mask 1, for example, from a domestic fan. The microparticles will be separated from the surfaces of the body 4 and the membranes 11 and 13, and carried outside the body 4. You can carry out this procedure daily, for example, for one minute.

The fact that in an individual mask-type ultraviolet recirculator, including a mask 1 with a first hole 2 and a cleaning unit 3, containing a body 4 with a second hole 5 and with an internal cavity 6, and the second hole 5 of the body 4 is associated with the first hole 2 of the mask 1, the body 4 is connected to the lid 7, which has third openings 8, while in the cavity 6 of the body 4 the first source of ultraviolet radiation 9 is installed, connected to the power supply and control unit 10, which increases the effectiveness of protection against bacteria and viruses due to the interaction of UV radiation directly with bacteria and viruses. At the same time, ultraviolet radiation affects bacteria and viruses contained both in the air entering the cleaning unit 3 and in the exhaled air and leaving the cleaning unit 3. Thus, in addition to protecting a person from bacteria and viruses of the environment, the proposed device disinfects exhaled air, which can also contain disease-causing bacteria and viruses.

The fact that at least one LED with a wavelength of 265 nm is used as the first source of ultraviolet radiation 9 leads to the direct destruction of bacteria and viruses.

The fact that in the inner cavity 6 of the housing 4 between the second hole 5 and the first source of ultraviolet radiation 9 is installed the first diaphragm 11 with fourth holes 12 and the second diaphragm 13 with fifth holes 14, while the third holes 8 in the cover 7, the fourth holes 12 in the first diaphragm 11 and the fifth holes 14 in the second diaphragm 13 are located so that their axial projections on the plane do not coincide with each other, exclude direct air flow through all the holes and increase the turbulence of the flow. In this case, the convective mass transfer in the cavity 6 of the housing 4 increases, which leads to an increase in the effectiveness of protection against bacteria and viruses due to a more uniform effect of ultraviolet radiation on air flows for its disinfection.

The fact that an aluminum layer is applied on the inner surface of the body 4, on the cover 7, on the first diaphragm 11 and on the second diaphragm 13 leads to an increase in the reflection of ultraviolet radiation and, accordingly, increases the effectiveness of the action of ultraviolet radiation on bacteria and viruses.

The fact that a layer of titanium dioxide is applied on the inner surface of the body 4, on the cover 7, on the first diaphragm 11 and on the second diaphragm 13 leads to an increase in the degree of purification of both inhaled and exhaled air due to the destruction of bacteria and viruses on the surface of the dioxide titanium.

The fact that at least one LED with a wavelength of 365 nm is used as the first source of ultraviolet radiation 9 leads to additional destruction of bacteria and viruses due to their interaction with titanium dioxide stimulated by ultraviolet radiation of this wavelength.

The fact that between the first diaphragm 11 and the second diaphragm 13 there is a piezoelectric module 15 connected to the power supply and control unit 10 allows periodically, for example, daily preventive cleaning of the device by disconnecting the cleaning unit 3 from the mask 1, including the piezoelectric module 15 and blowing through, for example one minute, cavity 6 of body 4.

The fact that the generatrices of the fourth holes 12 in the first diaphragm 11 and the fifth holes 14 in the second diaphragm 13 are located at angles to the planes of the first diaphragm 11 and the second diaphragm 13 not equal to 90° increases the convective mass transfer in the cavity 6 of the housing 4, which leads to an increase in the protection efficiency from bacteria and viruses due to a more complete and uniform effect of ultraviolet radiation and surfaces coated with titanium dioxide on air flows for its disinfection.

The fact that a second source of ultraviolet radiation 16 is installed between the first diaphragm 11 and the second diaphragm 13, connected to the power supply and control unit 10, leads to an increase in the effectiveness of protection against bacteria and viruses due to a more complete and uniform effect of ultraviolet radiation and titanium dioxide-coated surfaces on air streams for its disinfection. This option is most effective in conditions of high levels of bacteria and viruses in the environment.

The fact that the cover 7 is mounted on the body 4 with the possibility of removal and adjusting movement allows you to change the degree of turbulence of the air flow inside the cleaning unit 3 by turning the cover 7 around the axis of symmetry perpendicular to the plane of the cover 7. This increases the turbulence of the air passage between the cover 7 and the first diaphragm 11. This increases the efficiency of air disinfection due to a more complete and uniform effect of ultraviolet radiation and surfaces coated with titanium dioxide on air flows. The possibility of removing the cover 7 from the body 4 makes it possible to simplify the maintenance of the device.

Claims (2)

1. An individual mask-type ultraviolet recirculator, including a mask with a first hole and a cleaning unit containing a body with a second hole and an internal cavity, the second hole of the body being associated with the first hole of the mask, characterized in that the body is connected to a cover having third holes, at the same time, the first source of ultraviolet radiation is installed in the body cavity, connected to the power supply and control unit, while in the internal cavity of the body between the second hole and the first source of ultraviolet radiation, the first diaphragm with fourth holes and the second diaphragm with fifth holes are installed, while the third holes are in cover, the fourth holes in the first diaphragm and the fifth holes in the second diaphragm are arranged so that their axial projections on the plane do not coincide with each other, and the generators of the fourth holes in the first diaphragm and the fifth holes in the second diaphragm are located at angles to the planes of the first diaphragm and the second th aperture not equal to 90°. 2. The device according to claim. 1, characterized in that the cover is installed on the body with the possibility of removal and adjustment movement of the cover around the axis of symmetry.

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