WO2023026103A1 - Inhalation system and inhalation method - Google Patents

Abstract

An inhalation system and inhalation method for inhalation of an inhalant are claimed. The system has a full-face mask with a visor and a mask seal, a body connected to the mask, the front part of the body being secured to the upper part of the mask and being the only element holding the mask on the user's head, and a device for supplying a flow of air to the space under the mask. The air supply device has a main flow-through channel with an inlet opening, an outlet opening that leads into the space under the mask, and a subsidiary flow-through channel with a fan and an injector for inhalant to be inhaled by the user, wherein the outlet opening of the subsidiary flow-through channel leads into the space under the mask or into the main flow-through channel. The system also has a blower to create an air flow in the main flow-through channel, at least one outlet filter for air exhausted from the space under the mask, which is situated in the lower half of the full-face mask and filters the inhalant to be inhaled by the user, a control device, which is arranged in the body, for controlling the injector, the blower and the fan, and an electric power supply unit arranged in the rear part of the body, i.e. the part extending away from the mask.

Description

Inhalation system and method of inhalation

FIELD OF TECHNOLOGY

The present invention relates to a system for inhaling a user-respirable component with a full-face protective mask according to the preamble of claim 1, as well as a method for inhaling a user-respirable component using this inhalation system. In particular, the system and method are used for the safe and controlled introduction of aerosol vapors, gases, volatiles or other gases, particles or liquids suspended in air into the respiratory organs of a person, followed by purification of exhaled air.

BACKGROUND OF THE INVENTION

Known from GB2252048A is a mask with a housing located on the user's head, which is attached to the user's head with fastening straps. In this design, air is supplied from below through the back of the body and is directed by a fan along the entire length of the body to its front part, in which the main filter is located, after passing through which the air flow is directed into the space under the mask. The fan is powered by an external electrical power supply located remotely from the filtration system, for example, on the user's belt. The air exhaled by the user is removed through the flow valve located at the bottom of the mask. The disadvantages of this filtration system are its bulkiness, significant energy consumption in operation, the inconvenience caused by the need to mount the power supply separately from the filtration system, and the impossibility of purifying the exhaled air emitted into the surrounding space. Personal systems are known that serve to purify exhaled air in order to remove from it a component to be inhaled by the user and prevent this component from entering the surrounding space. One such example is CN 212754244 U, which describes a smoking nasolabial mask whose exhaled air is filtered. In addition to the opening for a cigarette, this mask has a channel provided with a single-pass valve for entering the mask of clean air, as well as a channel provided with a single-pass valve for venting air with cigarette smoke from under the mask, which is provided with a filter. Air enters the mask exclusively by inhalation due to the rarefaction of pressure under the mask created by the force of the lungs. Also, the air with smoke exhaled from under the mask is removed solely due to the creation of increased pressure under the mask when the user exhales. This mask is attached to the user's face with a tape covering the back of the user's head and thereby pressing the mask to the user's face in the area of the nasolabial triangle. The disadvantage of this system is the exposure to external influences of the upper part of the user's face, in particular, his eyes. Also, a significant disadvantage of this mask is the mechanical load on the lower part of the user's face under the weight of the entire system fixed in this part of the face, as well as the need to use additional devices, such as an occipital tape, to strengthen and remove the mask on the user's face. In addition, the use of this smoking mask entails an additional mechanical load on the user's lungs, since the air and inhaled cigarette smoke under the mask are solely due to the force of the lungs.

The present invention allows avoiding the above disadvantages by protecting the user's eyes from the external environment as well, while facilitating the process of inhalation of the component to be inhaled by the user, preventing the component to be inhaled from entering the environment, and also allowing the entire inhalation system to be conveniently and compactly placed on the user's head. without the use of additional fasteners. The component to be inhaled by the user may be cigarette smoke, smoke vaporizer, anti-asthma or other medical products in aerosol form, aromatherapy fragrances or simply fragrances.

DISCLOSURE OF THE INVENTION

The purpose of the present invention is to provide a self-contained personal inhalation system for a user-respirable component, facilitating the user's inhalation process, preventing the inhalant component from entering the environment, and also allowing the system to be conveniently positioned for wearing on the user's head without additional fastening devices.

This task is carried out according to the system of inhalation of the component to be inhaled by the user according to paragraph 1 of the claims, and also in accordance with the method of inhalation of the component to be inhaled by the user according to paragraph 11 of the claims. The most preferred embodiments of the invention are presented in dependent claims.

The claimed air inhalation system has a body and a full-face protective mask for wearing on the user's face with a visor and a mask obturator located at the edges of the visor, while creating a closed space between the inner surface of the mask and the user's face, respectively, its head part. The obturator located along the edge of the visor also partially holds the function of the mask on the user's head, preventing its position from changing after installation. In the upper part of the protective breathing mask there is a body, which fits the parietal part of the user's head with its part adjacent to the user's head. Such an embodiment of the body allows the mask to be held on the head mainly due to the fit of the body to the parietal part of the user's head, while the body is the only fastening element of the mask on the user's head. Forced air supply into the space between the mask and the user's face is made by means of an air flow supply device having at least one main flow channel located exclusively in the front part of the housing adjacent to the upper part of the mask and having an inlet that communicates with the atmosphere and exits into the undermask space outlet. The air flow supply device also has at least one auxiliary flow channel, in which the auxiliary flow channel fan and at least one injector of the component to be inhaled by the user are located, and the outlet of the auxiliary flow channel opens into the undermask space or into the main flow channel. The air flow supply device is also equipped with a blower to create an air flow in the main flow channel. Thus, the forced supply of air into the space between the mask and the user's face is carried out by at least one blower to create an air flow in the main flow channel and at least one fan of the auxiliary flow channel, which allows the user to almost effortlessly carry out the process of breathing and inhaling additional aerosol Components.

The location of at least one main flow channel exclusively in the front part of the body, adjacent to the top of the mask, allows you to significantly reduce the overall length of the main flow channel compared to the prior art, which leads to a decrease in aerodynamic drag in the flow channel. This makes it possible to reduce the power of the blower, which in turn leads to a reduction in energy consumption and noise pollution.

Due to the air supplied to the space between the mask and the face of the user with the aerosol component to be inhaled by the user, an overpressure is created there, due to which the air contained in the under-mask space is discharged to the outside through at least one exhaust filter located in the lower half of the full-face mask, preventing the subject from being expelled. inhalation by the user of the component.

The housing also has a control device for the operation of the injector, blower and fan, which allows synchronizing the air flow supplied to the submask space and injection by the injector into the auxiliary flow channel of the component to be inhaled. The claimed inhalation system is located in the back, i. the part of the body facing the mask is an electric power supply unit, due to which the center of gravity of the inhalation system is located in the region of the top of the head on the user's head, allowing the inhalation system to be placed for wearing on the user's head without additional fastening devices. Most preferably, the body is elongated and has an arcuate shape elongated in the direction away from the mask, and the lower surface of the body facing the mask is curved downwards towards the mask, while the bend line along the bottom surface of the body in the direction away from the mask is made in such a way that the lower, located from the side of the mask, the body surface has the shape of the parietal and partially occipital part of the user's head. Preferably, the top surface of the body follows substantially the shape of the bottom surface and extends substantially equidistantly above it. It is the form of the case, elongated in the direction from the mask, that allows ergonomically and compactly placing the case on the parietal and occipital parts of the user's head, placing the bending line running along the lower surface of the case essentially on the midline of the user's head from the frontal to the occipital zone of the head, while leaving the ear and adjacent to them from above the regions of the user's head are not covered by the body. This achieves the possibility of a better perception of the user of external audio signals, or the possibility of using headphones with a headband of headphones worn over a relatively flat curved body. In addition, the contact area of the housing against the surface of the user's head is thus minimized, leaving a significant portion of the scalp uncovered by the housing, thereby preventing excessive sweating during use of the filtration system.

When the visor is made of lightweight polycarbonate, the main mass of the inhalation system is concentrated in the housing, which provides another advantage to reduce damage to the outer surface of the visor, namely, when the inhalation system is removed and placed on a flat surface, it is automatically positioned so that the upper surface of the housing contacts e the surface where the mask was placed, according to the “roll-up” principle. According to one embodiment of the inhalation system, it has a device for preventing the release of the component to be inhaled by the user into the surrounding space through the inlet of the main and/or auxiliary flow channel. This prevention device can be made in the form of an air filter or check valve located in the main and / or auxiliary flow channels, allowing flow only in the direction from the inlet to the outlet of the auxiliary flow channel or the main and auxiliary flow channels. This measure makes it possible to prevent the component to be inhaled by the user from escaping into the environment other than through the exhaust filter provided for this purpose, for example, during a sharp exhalation of the user or during his sneeze.

According to one embodiment of the invention, the injector of the component to be inhaled by the user is made in the form of at least one of the following components: a vaporizer, a heater, an atomizer, an atomizer of a substance, gas or liquid. The injector is located in the auxiliary flow channel, while the component released by the injector is directed to the undermask space or to the main flow channel with an air flow driven by a fan located in the auxiliary flow channel.

According to another embodiment of the inhalation system, in the outlet of the main flow channel, or after the outlet of the main flow channel in the direction of air flow, a means for directing the main flow in the direction from the body to the mask visor is installed at an angle of 0° to 30° relative to the inner surface of the upper part of the visor adjacent to the front of the case. The main flow guide means avoids the main flow blowing over the upper part of the user's face, in particular the region of the eyes and partly the nose of the user. The main flow in the undermask space is directed by means of directing the main flow essentially along the inner surface of the visor towards the bottom of the mask. This prevents the mucous membranes of the user's eyes from drying out, as well as from getting the component to be inhaled by the user into the user's eyes. Most preferred is the location of the inlet of the auxiliary flow channel in the side wall of the main flow channel. In this case, the air in the auxiliary flow channel is taken from the main flow channel, which makes it possible to simplify the design of the device.

According to another embodiment of the invention, the outlet of the auxiliary flow channel is located in the side wall of the main flow channel downstream of the inlet of the auxiliary flow channel. This measure also makes it possible to simplify the design of the air supply device. In this case, the only air inlet of the air flow device is the inlet of the main flow channel, and the air outlet of the flow device is the outlet of the main flow channel leading into the mask space.

According to another embodiment of the inhalation system, the outlet of the auxiliary flow channel is located in the lower half of the full-face protective mask. In this case, the component to be inhaled by the user is supplied to the lower part of the submask space, preventing the component to be inhaled by the user from entering the user's eyes. In this case, the air flow leaving the outlet of the auxiliary flow channel with the component to be inhaled by the user remains in the lower part of the undermask space, and the lifting of the component into the upper part of the undermask space is prevented by the top-down flow of clean air from the outlet of the main flow channel.

If the outlet of the auxiliary flow channel is located in the lower half of the full-face protective mask, according to another embodiment of the invention, on the inner side of the mask visor, a submask space separator is provided for the visual space located in the upper part of the mask in front of the eyes and around the eyes of the user and the respiratory space located in the lower part of the mask. the space encompassing the user's nostrils and mouth. In this case, the outlet of the auxiliary flow channel located in the respiratory space, and the separator is made non-continuous with the possibility of the passage of air flow from the visual to the respiratory space. This measure even more effectively prevents the component to be inhaled by the user from the respiratory space into the visual space, since these two spaces are separated from each other by a separator with channels provided in it for the flow of clean air from the visual to the respiratory space. Alternatively, instead of these passages, the separator may use one or more non-return valves to allow air from the visual space into the breathing space and prevent air from the breathing space from entering the visual space.

If the outlet of the auxiliary flow channel is located in the lower half of the full-face protective mask according to another embodiment of the invention, the inhalation system has a terminal flow channel connected by its inlet to the outlet of the auxiliary flow channel and having an outlet in the central lower part of the undermask space with the possibility of its captured by the user's lips or configured to cover the user's mouth and nostrils. This allows the air flow from the auxiliary flow channel with the inhalable component to be directed directly into the user's mouth or mouth and nose without the inhalable component entering the submask space prior to the user's inhalation. This embodiment is possible both with and without the subpattern separator.

Also claimed is a method of inhalation of the component to be inhaled by the user using any of the embodiments of the inhalation system described above. According to the method of inhalation, the inhalation system is put on the user's head with a snug fit of the mask skirt around the user's face, the inhalation system is held on the user's head solely by fitting the body to the parietal part of the user's head, at least one main air flow is created through at least one main flow channel , entering from the surrounding space into the submask space. Besides, at least one auxiliary air flow is created through at least one auxiliary flow channel by means of a fan located in it, containing a component to be inhaled by the user, while the auxiliary air flow enters the submask space and / or into the main flow channel, and the component to be inhaled by the user is brought into the auxiliary channel by means of an injector. In this case, the air discharged from the lower half of the submask space is filtered from the component to be inhaled by the user.

According to one embodiment of the method, the component to be inhaled by the user is prevented from escaping from the undermask space into the surrounding space through the inlet of the main and/or auxiliary flow channel. According to another embodiment of the method, the auxiliary air flow is taken from the main air flow. According to another embodiment of the method, the auxiliary air flow is fed into the main air flow. Alternatively, the auxiliary airflow can be fed into the bottom half of the full face shield.

According to the most preferred embodiment of the method with the supply of an auxiliary air flow to the lower half of the full-face protective mask, the main air flow in the undermask space is directed from top to bottom, and its intensity is set such that the component to be inhaled by the user contained in the auxiliary air flow does not rise in the undermask space to the level the user's eye, but was taken down by this directional main stream and filtered by the output filter. This kind of dynamic cleaning of the top of the mask space prevents the component to be inhaled by the user from entering the user's eyes.

BRIEF DESCRIPTION OF THE FIGURES

The figures show: Fig. 1 - the appearance of one of the embodiments of the claimed inhalation system;

Fig. 2 is a schematic representation of the upper part of FIG. 1 inhalation systems with partially spaced housing elements;

Fig. 3 schematically shows a first embodiment of an inhalation system;

Fig. 4 schematically shows a second embodiment of the inhalation system;

Fig. 5 schematically shows a third embodiment of an inhalation system;

Fig. 6a is a front view of the inhalation system according to the third embodiment with a mask space separator;

Fig. 66 is a side view of the inhalation system according to the third embodiment.

Fig. 7 is a side view of an inhalation system according to another embodiment with a terminal flow channel.

IMPLEMENTATION OF THE INVENTION

In FIG. 1 shows one of the embodiments of the claimed inhalation system. The inhalation system has a full-face protective mask 1 with a body 4 fixed in its upper part. The body 4 is made elongated and arc-shaped so that the lower surface of the body 4 facing the mask 1 is curved down towards the mask 1. In this case, the bending line along the bottom surface body 4 in the direction from the mask 1 is made in such a way that the lower surface of the body 4 located on the side of the mask 1 has the shape of the parietal part of the user's head. In addition, the upper surface of the body 4 is also curved in the same direction as the lower surface. In one of the variants, the body is made rigid, while the fastening of the mask on the parietal part of the user's head is provided only due to the shape of the bend of the part of the body that is adjacent to the user's head. The protective mask 1 includes a visor 2 made of a transparent material, such as flexible transparent polycarbonate. Along the inner edges of the visor 2, with the exception of the mask area to which the body 4 is attached, there is a mask obturator 3 designed to seal the space between the inner edges of the mask 1 and the face, respectively, the head of the user. On the edge sections of the mask 1, in its lower half on opposite sides, there is one exhaust filter 6 of the air removed from the undermask space. Exhaust filters 6 are located in the lower side parts of the mask 1, leaving the user's field of view through the visor free. In FIG. 1 shows the general principle of operation of the claimed inhalation system. Through the air-permeable top cover 4a of the housing 4, an incoming air stream 7 is supplied, which, through the diagram shown schematically in FIG. 2, the air flow supply device 5 is introduced into the undermask space along the surface of the visor 2 by the air flow 8 exiting into the undermask space, to which the component to be inhaled is added in the manner shown below. Through the exhaust filters 6, due to the excess pressure in the submask space compared to the ambient atmospheric pressure, the air leaves the submask space, forming air flows 9 coming out of the exhaust filters 6, while the component to be inhaled by the user or its residues is filtered by the exhaust filters 6 when leaving the submask space, which prevents this component from entering the surrounding space. The incoming air stream 7 directed into the undermask space passes through the inlet shown in FIG. 2, the air filter 10 is then supplied to the air supply device 5. The presence of the air filter 10 is optional. The claimed inhalation system is collapsible, as shown in Fig. 2. An air filter 10 and an air flow device 5 are located under the removable top cover 4a of the body 4, while the air filter 10 and the air flow device 5 can be replaced depending on the required operating conditions of the inhalation system.

In the back, i.e. the part of the body 4 separated from the mask 1 has an electric power supply unit 21 conventionally shown in FIG. 2 dotted line. Location the electric power supply unit 21 in the rear part of the housing 4 makes it possible to locate the common center of gravity of the inhalation system in the position of wearing it on the user's head in the central part of the housing 4 near the crown of the user's head. The power supply 21 is made removable with the possibility of its replacement.

As shown in FIG. 2, the housing 4 houses the control device 23 for the operation of the injector, blower and fan, which will be shown in FIG. 3-5.

In FIG. 3 shows a variant of the schematic diagram of the operation of the inhalation system. The air flow 7 entering the inhalation system passes through the inlet filter 10, being cleaned of impurities and enters the inlet 12 of the main flow channel 11. In the lower part of the main flow channel 11, a blower 14 is located to create an air flow in the main flow channel 11. Alternatively, the blower 14 can be located in the main flow channel 11 or in front of the inlet 12 of the main flow channel 11 (not shown). The outlet 13 of the main flow channel 11 goes into the sub-mask space 18, limited by the full-face protective mask 1, located at the edges of the mask 1 by the obturator 3 and the front part of the lower surface of the housing 4. Parallel to the main flow channel 11, an auxiliary flow channel 15 is connected, the inlet 16 of which is located in the upper part of the main flow channel 11, and the outlet 17 of the auxiliary flow channel is located in the lower part of the main flow channel 11, in the direction of air flow in the main flow channel 11. channel 15 from its inlet 16 to its outlet 17. In the direction of the air flow in the auxiliary flow channel 15, after the fan 19, there is an injector chamber 20 with an injector 21. The injector 21 is a device for supplying auxiliary flow channel 15, the air flow of the component to be inhaled by the user, which in this embodiment of the invention is carried out through the auxiliary flow channel 15 into the main flow channel 11 and then through the outlet 13 of the main flow channel is fed into the mask space 18. According to the invention, the injector is configured as one or more of the following devices: a respirable component vaporizer, a respirable component vaporizer heater, a respirable component atomizer, or any other known solid, gas, or liquid atomizer containing a respirable component.

From the outlet 13 of the main flow channel 11, the air mixture containing the component to be inhaled is supplied to the submask space 18, where at least a part of the component to be inhaled is inhaled by the user through the nose and/or mouth, and the air mixture to be ejected from the submask space 18 is discharged outside through exhaust filters 6 which filter out the remaining respirable component in such a way that the air stream 9 leaving the exhaust filter contains practically no respirable component.

The air flow device 5, depicted conventionally by a dotted line, includes at least a part of the main flow channel 11, as well as an auxiliary flow channel 15 with a fan 19 contained therein and an injector chamber 20 with an injector 21. The air flow device 5 is made replaceable and can be replaced depending on the used injector 21 or the power of the fan 19 of the auxiliary flow channel. In FIG. 3 shows one air flow device 5, however, alternatively, it is possible to connect several such air flow devices 5 in parallel to each other.

Schematically shown in Fig. 2, the device 23 for controlling the operation of the injector 21, the blower 14 and the fan 19 provides the possibility of regulating the rhythm and volume of the air flow supplied by the blower 14 into the submask space 18, as well as the amount of the component to be inhaled supplied to this flow by the injector 21, respectively, by the fan 19. Alternatively, the control device 23 may be operatively associated with a pressure sensor (not shown in Fig. 3) communicating with the submask space 18. The pressure sensor measures the pressure in the submask space 18, and the control device 23 regulates the operation of the blower 14, fan 19 and injector 21 depending on the pressure measured by the sensor. So during the user's inhalation, the pressure in the submask space 18 drops, and as a result, the control device 23 gives a signal to the blower 14, the fan 19 and the injector 21 to regulate the intensity of air injection in the main flow channel 11 and in the auxiliary flow channel 15. During the exhalation of the user the pressure under the mask increases, which is registered by the above pressure sensor, respectively, the control device 23 commands the blower 14, the fan 19 and the injector 21 to reduce the injected air volume, respectively, to reduce the injection into the auxiliary flow channel 15 of the component to be inhaled, or to temporarily stop operation of supercharger 14, fan 19 and injector 21.

It is also possible to perform an inhalation system without a pressure sensor, while the intensity of the blower 14, fan 19 and injector 21 remains constant, creating excess pressure in the mask space 18, which, when the user exhales, is maintained at a constant level above atmospheric due to the release of air from under masks through the exhaust filter 6.

In FIG. 4 shows a second embodiment of the inhalation system, the main elements of which correspond to those shown in FIG. 3 with the difference that the injection chamber 20 from the auxiliary flow channel 15 is transferred to the outlet 17 of the auxiliary flow channel 15 and is located essentially in the main flow channel 11. In this embodiment, the injection chamber 20 is formed open from the side of the oncoming flow in the main flow channel 11 by the wall of the injector chamber 20a located downstream in the main flow channel 11 relative to the injector 21. The respirable component emitted by the injector 21 mixes with the air flow avoided onto it, making it possible to achieve a uniform distribution of the respirable component in the mixed flow zone 24 located downstream flow mainly flow channel 11 after the wall 20a of the injection chamber. Alternatively, this embodiment can be made without the injection chamber wall 20a (not shown).

A method for inhaling a component to be inhaled by a user using the components shown in FIGS. 1 - fig. The 4 inhalation systems are carried out as follows. Shown in FIG. 1, the inhalation system is put on the user's head with the obturator 3 of the mask 1 tightly fitting around the user's face, while the inhalation system is held on the user's head solely by fitting the body 4 to the parietal part of the user's head. Through at least one main flow channel 11, at least one main air flow is created, entering from the surrounding space into the undermask space 18. Through at least one auxiliary flow channel 15, an auxiliary air flow is created by means of a fan 19, containing the component to be inhaled by the user. At the same time, the auxiliary flow channel 15 is connected parallel to a part of the main flow channel 11, takes its source from the main flow channel 11 and flows into the same main flow channel 11. At the same time, the component to be inhaled by the user is introduced into the air flow passing through the auxiliary channel 15 by means of the injector 21. The flow air containing the component to be inhaled is directed to the upper part of the submask space 18, creating an air flow 8 emerging into the submask space 18 and passing through it from top to bottom. direction from the body 4 to the visor 2 of the mask at an angle of 0 to 30 degrees in the direction of the inner surface of the visor 2 adjacent to the front of the body 4. At the same time, the air removed from the submask space is filtered by exhaust filters 6 to prevent the component to be inhaled from entering the surrounding space. According to one of the embodiments of the method, in order to avoid the inhalation of the component to be inhaled into the surrounding space through the inlet 12 of the main flow channel located in the housing 4, an inlet filter 10 or a check valve is used that passes the air flow through the air supply device 5 exclusively from the outside into the undermask space and prevents movement air in the opposite direction.

According to one of the embodiments of the method, the inlet 16 of the auxiliary channel 15 is located not in the main flow channel 11, but communicates with the atmosphere (not shown). In this embodiment of the method, the auxiliary air flow is taken not from the main air flow, but directly from the atmosphere.

In FIG. 5 shows a third embodiment of the inhalation system, the numbering of the elements of which corresponds to those shown in FIG. 3 elements. In particular, the air flow 7 entering the inhalation system, passing through the inlet filter 10, is supplied by the blower 14 to the main flow channel 11 to create an air flow in it. In the upper part of the main flow channel 11 there is an inlet 16 of the auxiliary flow channel 15, in which, by analogy with that shown in FIG. In the 3rd embodiment, the fan 19 and the injection chamber 20 with the injector 21 are provided. 3 in that the outlet 17 of the secondary flow channel 15 communicates with the respiratory space 27 in the lower part of the mask, while the outlet 13 of the main flow channel 11 communicates with the visual space 26. The entire submask space 18 shown in FIG. 3, in FIG. 5 divided by submask separator 25 into visual space

26 and breathing space 27. This third embodiment of the inhalation system is also shown in front view in FIG. 6a and in the side view in Fig. 66. Separation of the submask space 18 into the visual space 26 located in the upper part of the mask and into the respiratory space located in the lower part of the mask

27 is made by means of a separator 25 of the undermask space adjacent to the inner surface of the visor 2 and in use to the face of the user above the user's nostrils. The separator 25 has two one-way valves in the form of a check valve 28 allowing air flow in one direction, namely from the visual space 26 to the breathing space 27 and preventing air from moving in the opposite direction. The air flow 8 emerging from the outlet 13 of the main flow channel 11 enters the visual space 26 and then through the check valve 28 of the separator 25 is directed to the respiratory space 27, which is indicated in Fig. 6a and fig. 66 arrows 30.

The component to be inhaled is supplied by a stream 29 passing through the auxiliary flow channel 15 through the outlet 17 of the auxiliary flow channel 15 into the respiratory space 27. The part of the auxiliary flow channel 15 located after the injection chamber 20 passes in the embodiment shown in figures 6a and 66 inside the obturator 3 of the mask However, alternatively, a separate channel for supplying flow 29 to the respiratory space 27 (not shown) can be provided parallel to the obturator 3 for this purpose. This design of the divided submask space avoids the entry of the respirable component into the visual space 26. The air mixture containing the respirable component from the respiratory space 27 is discharged to the outside through the exhaust filter 6, which prevents the respirable component from being expelled to the outside. To avoid cluttering up FIG. 6a and fig. 66 the exhaust filter 6 is not shown at the bottom of the full face mask.

Shown in FIG. 5, fig. 6a and fig. 66 the third embodiment of the inhalation system is also possible without check valves 28 of the separator 25. Instead of check valves 28, gaps are left in the separator 25 through which the flow 30 passes from the visual space 26 to the respiratory space 27, since the pressure created in the visual space 26 is maintained above the pressure created in the respiratory space 27. A method for inhaling a component to be inhaled by a user using the method shown in FIG. 5, fig. 6a and fig. 66 embodiments of the inhalation system differs from the above inhalation method using the embodiments of FIG. 1 - fig. 4 by the fact that the air flow 29 passing through the auxiliary flow channel 15 is fed into the lower half of the full-face protective mask, namely into the respiratory space 27. In this case, the intensity of the air flow supplied to the visual space 26 from the main flow channel 11 is set to be greater in comparison with flow rate 29 passing through the auxiliary flow channel 15 to provide flow 30 from the visual space 26 to the respiratory space 27. Alternatively, this embodiment of the method can be performed without the use of a separator check valve 28, in which case the direction of air in the visual space 26 should be constant higher air pressure in the respiratory space 27.

In FIG. 7 shows another embodiment of an inhalation system, the main elements of which correspond to those shown in FIG. 6a and 66 with the difference that the inhalation system has a terminal flow channel 31 connected by its inlet to the outlet 17 of the auxiliary flow channel and having an outlet 32 in the central lower part of the respiratory space 27 with the possibility of being captured by the user's lips or made with the possibility of covering to the user's mouth and nostrils. This embodiment of the invention is also possible without the mask space separator 25 (not shown). In this case, the outlet 32 is located in the central lower part of the submask space 18.

Claims

Claims An inhalation system for a component to be inhaled by a user, having - a full-face protective mask (1) to be worn on the user's face with a visor (2) and a mask obturator located along its edges (3), - a body (4) connected to the mask (1), wherein the body (4) with its front part is fixed on the upper part of the mask (1) and is the only holding element of the mask (1) on the user's head, - a device (5) for supplying the air flow supplied to the undermask space (18), having at least one main flow channel (11) located exclusively in the front part of the body (4), adjacent to the upper part of the mask (1) and having an inlet an opening (12) and an outlet (13) extending into the sub-mask space (18), at least one auxiliary flow channel (15), in which the fan (19) of the auxiliary flow channel (15) and the injector (21) to be inhaled by the user are located component, wherein the outlet (17) of the auxiliary flow channel (15) goes into the mask space (18) or into the main flow channel (11), and the blower (14) to create an air flow in the main flow channel (11), - at least one exhaust filter (6) located in the lower half of the full-face mask (1) mask space (18) for filtering the component to be inhaled by the user - located in the housing (4) control device for the operation of the injector (21), supercharger (14) and fan (19), - located in the back, i.e. the part of the body (4) separated from the mask (1) by an electric power supply unit (21), which ensures the location of the center of gravity of the inhalation system in the region of the top of the head on the user's head, allowing the inhalation system to be placed for wearing on the user's head without additional fastening devices. The inhalation system according to claim 1, having a device (10) for preventing the release of the component to be inhaled by the user into the surrounding space through the inlet of the main (10) and/or auxiliary (16) flow channel. The inhalation system according to claim 2, in which the prevention device (22) is an air filter or a check valve preventing the air flow from the main flow channel inlet (12) and/or from the auxiliary flow channel inlet (16). The inhalation system according to one of the preceding claims, wherein the injector (21) of the component to be inhaled by the user is made in the form of at least one of the following components: vaporizer, heater, atomizer, substance, gas or liquid atomizer. The inhalation system according to one of the previous paragraphs, having a means of directing the main flow into the main flow channel installed after the outlet (13) or in this outlet (13). direction from the body (4) to the visor (2) of the mask at an angle from 0° to 30° relative to the inner surface of the visor (2). The inhalation system according to one of the previous claims, in which the inlet (16) of the auxiliary flow channel is located in the main flow channel (11). The inhalation system according to one of the preceding claims, in which the outlet (17) of the auxiliary flow channel is located in the main flow channel (11). The inhalation system according to one of claims 1 to 6, in which the outlet (17) of the auxiliary flow channel is located in the lower half of the full face mask (1). The inhalation system according to claim 8, having a terminal flow channel (31) connected by its inlet to the outlet (17) of the auxiliary flow channel and having an outlet (32) in the central lower part of the undermask space (18) with the possibility of its capture by the user's lips or configured to wrap around the user's mouth and nostrils. The inhalation system according to claim 8 or 9, having a submask space separator (25) located on the inner side of the visor (2) of the mask into a visual space (26) located in the upper part of the mask (1) and a respiratory space located in the lower part of the mask (1) (27), moreover, the outlet (17) of the auxiliary flow channel is located in the respiratory space (27), and the separator (25) is configured to pass the air flow from the visual (26) to the respiratory (27) space. 22 11. The inhalation system according to claim 10, wherein the submask space divider (25) has a check valve (28) allowing flow only in the direction from the visual (26) to the respiratory (27) space. 12. A method for inhaling a component to be inhaled by a user, wherein the inhalation system according to one of paragraphs 1-11 - put on the user's head with a snug fit obturator (3) of the mask (1) around the user's face, - hold the inhalation system on the user's head solely by fitting the housing (4) to the parietal part of the user's head, - create at least one main flow of air through at least one main flow channel (11), entering from the surrounding space into the undermask space (18), - at least one auxiliary air flow is created through at least one auxiliary flow channel (15) by means of a fan (19) located in it, containing a component to be inhaled by the user, and exiting into the undermask space (18) or into the main flow channel (11 ), and the component to be inhaled by the user is brought into the auxiliary channel (15) by means of the injector (21), - filter the air discharged from the lower half of the submask space (18) from the component to be inhaled by the user. 13. The method according to claim 12, in which the component to be inhaled by the user is prevented from exiting the submask space (18) into the surrounding space through the inlet (12) of the main and / or inlet (16) of the auxiliary flow channel. 23 14. The method according to one of paragraphs 12 or 13, in which the auxiliary air flow is taken from the main air flow. 15. The method according to one of claims 12 to 14, wherein the auxiliary air flow is supplied to the main air flow. 16. The method according to one of claims 12 to 14, wherein the auxiliary air flow is supplied to the lower half of the full face mask. 17. The method according to claim 16, in which the main air flow in the undermask space (18) is directed from top to bottom from the outlet (13) of the main flow channel away from the body (4), and its intensity is set such that the air contained in the auxiliary flow of air, the component to be inhaled by the user did not rise in the undermask space (18) to the level of the user's eyes, but was carried away by this directed main flow and filtered by the outlet filter (6).