DE202020004208U1 - System for creating a barrier veil in front of the face of the human head - Google Patents

Abstract

System (1) for protecting the respiratory tract of the human body, with a ventilation element (2) with at least one air outlet opening (3, 3 '), characterized in that the flow rate of the air volume exiting from the air outlet opening (3, 3') is a barrier curtain ( 5) in the direction of the face of the human head (4) facing side is less than the side facing away from the face.

Description

The present invention relates to a method and a system for generating a barrier veil in front of the face of the human head, in particular with a barrier veil to avoid droplet infections, the air currents of which have different flow velocities in order to largely avoid polluted air quantities when the system is worn get close to the human respiratory organs, so that the inhaled air is germ-free, virus-free, bacteria-free, or the pollutant concentration is reduced.

Such face and respiratory protection systems are known in the prior art. The known respiratory protection systems are generally welding helmets that are internally ventilated with fresh air in order to prevent toxic gases from entering the welder's respiratory tract. The fresh air is generated with a fresh air unit that is attached either to the hip or to the back of the human body.

Furthermore, in the prior art, for example, from EP 1 127 588 B1 a portable protective system with a protective cover for covering and protecting the human head has become known, which has a face shield and a head brace for fastening the system to the head. This system also includes a blower for blowing filtered air through a filter element into the space between the wearer's face and the face shield. With this system, the penetration of polluted air into the respiratory tract of the human body can largely be avoided. It is felt to be disadvantageous that a mechanical protective screen is arranged in front of the face of the human head, which on the one hand changes the optical conditions in the field of vision of the eyes and on the other hand appears technically relatively complex in order to largely avoid inhaling polluted air.

It is also seen as a disadvantage that the technically complex structure around the human head appears unsuitable for carrying the system at all times. Furthermore, it is felt to be disadvantageous that the air flow acts too strongly in the immediate vicinity of the face and a mechanical protective shield at least impairs speech.

It is also disadvantageous that the treated air masses are not blown into the room in a directed manner, but can emerge from the air outlet opening in a swirled manner.

According to the latest studies, wearing mechanical protective screens is ineffective against virus infections because the pathogenic pollutants collect in the space between the face and the mechanical visor and remain in this space and can therefore hardly prevent infections.

It is therefore the object of the present invention to provide a method and a system operating according to this method available that eliminates the disadvantages of the prior art and purified air quantities are able to keep the respiratory organs on the human head free of harmful substances in a targeted manner in order to achieve a To prevent the transmission of pollutants and the associated droplet infection, the system being easy to use.

This object is achieved with the characterizing features of the main claims. Further features essential to the invention can be found in the subclaims and the description, as well as the drawings.

The system according to the invention for the germ-free, bacteria-free and void-free supply of air to the vicinity of the human respiratory organs to prevent the transmission of polluted air into the human body and is equipped with at least one ventilation element and at least one pollutant filter and with at least one supply air device is characterized that the flow velocity of the air exiting from at least two air outlet openings of the ventilation element in the direction of the side facing the face of the human head is lower than the side facing away from the face.

It is advantageous that the exiting air is filtered, with at least one filter being a HEPA filter that filters out viruses, bacteria, pathogenic germs and other pollutants.

Furthermore, it is advantageous that the ventilation element has at least two air outlet openings, from which the air quantities exit at different flow speeds, wherein the air outlet openings can be shaped differently, for example elongated, oval, zigzag or round.

Another advantage is seen in the fact that the air outlet opening facing the face of the human head has the lower air outlet speed.

It is also advantageous that the system has a separate fresh air supply unit, which can optionally be applied separately to body parts of the human Body can be attached, for example with a belt or belt around the waist or on the back or also directly on the ventilation element by means of a special fastening device. The fastening unit can of course be equipped with various fastening means, such as a Velcro fastener, in order to ensure that the system can be put on and taken off quickly and safely in a simple manner.

Furthermore, it is advantageous that at least that part of the ventilation element which is arranged directly on the human head is designed to be flexible, for example made of a plastic material or a combination of metal and foam.

It is also advantageous that the entire ventilation element is made of a flexible material in order to adapt smoothly to any head shape.

Another advantage is seen in the fact that a filter is arranged in the entrance area of the fresh air supply unit, which filters out at least coarse particles such as dust or moisture droplets.

Above all, it is also advantageous that a main filter, which is designed as a HEPA filter, is arranged between at least one air flow-generating fresh air supply unit and the ventilation element.

Furthermore, it is advantageous that the fresh air supply unit is fastened to the human body (arm, hip, back) with a fastening means, such as a belt, belt or clasp or a Velcro fastener.

It is also felt to be advantageous that the ventilation element is designed as a headband and has graphic applications, patterns or images on its visible surfaces, which can be designed in a fashionable design. Other means, such as a hat or a peaked cap for fastening the ventilation element, are also conceivable and advantageous.

The method of creating a barrier veil from fresh air in front of the face of the human head uses a ventilation element to prevent viruses, bacteria, pathogenic germs and other pollutants from penetrating the respiratory tract of the human body, whereby the barrier veil made of fresh air has a speed profile in the cross section perpendicular to the direction of flow which on the one hand ensures that the person carrying the system is constantly supplied with sterile fresh air to breathe and on the other hand prevents the air contaminated with viruses and bacteria from getting into the vicinity of the respiratory organs, nose and mouth.

It is advantageous that the protective veil is produced with a ventilation element that is attached above the respiratory organs of the human head.

A further advantage can be seen in the fact that the ventilation element arranged above the field of vision of the human head generates an air flow which has different flow speeds at different cross-sectional locations in the cutting plane perpendicular to the air flow in a cutting plane, with at least two nozzles being used to generate the protective veil from which air currents emerge at different speeds in order to generate a cross-sectional profile of the air speeds at different locations on the cross-section of the protective curtain.

It can also be advantageous that the flow velocities and temperatures of the overall flow are controlled by a control system and can be set by a control center. It is advantageous here that the different air flows from the at least two nozzles in the ventilation element are regulated by means of flap slides or similar means.

It is also advantageous that the amounts of air supplied to the system or the ventilation element are taken from the limited space in which the person carrying the load is present.

It is also advantageous that the ventilation elements can be adapted to the respective application and its boundary conditions and can be combined and controlled in terms of circuitry.

• 1 eine schematische Blockdarstellung des erfindungsgemäßen Systems (1) zur Bildung eines Schutzschleiers (5) vor dem Gesicht eines menschlichen Kopfes (4) mit einem Belüftungselement (2), dessen Luftströmungen (6,6') das Eindringen von schadstoffbelasteten Luftmengen verhindert;
• 2 eine schematische Draufsicht auf den menschlichen Kopf (4), an dem ein Belüftungselement (2) oberhalb der Atmungsorgane des menschlichen Kopfes (4) angeordnet ist;
• 3 eine schematische Seitenansicht des menschlichen Kopfes (4), auf dem ein Ausführungsbeispiel des erfindungsgemäßen Systems (1) angeordnet ist;
• 4 eine schematische Draufsicht in Richtung des Pfeiles B auf das System (1) in 3;
• 5 eine graphische Darstellung der Strömungsgeschwindigkeit v in Abhängigkeit vom Abstand d zum Gesicht des menschlichen Kopfes (4).

In the following, the invention is explained in more detail with reference to drawings. It shows

• 1 a schematic block diagram of the system according to the invention ( 1 ) to form a protective veil ( 5 ) in front of the face of a human head ( 4th ) with a ventilation element ( 2 ), whose air currents ( 6th , 6 ' ) prevents the ingress of polluted air;
• 2 a schematic top view of the human head ( 4th ) to which a ventilation element ( 2 ) above the respiratory organs of the human head ( 4th ) is arranged;
• 3 a schematic side view of the human head ( 4th ), on which an embodiment of the system according to the invention ( 1 ) is arranged;
• 4th a schematic plan view in the direction of arrow B on the system ( 1 ) in 3 ;
• 5 a graphical representation of the flow velocity v as a function of the distance d to the face of the human head ( 4th ).

the 1 shows a schematic block diagram of an embodiment of the system according to the invention 1 to form a barrier veil 5 in front of the face of a human head 4th , with a ventilation element 2 , its air currents 6th , 6 ' prevents the penetration of polluted air masses. The system 1 has the following main elements that help put in front of the face of the human head 4th an air curtain 5 which largely prevents the entry of pollutants into the respiratory tract of the human body. The system 1 consists essentially of a fresh air supply unit 8th , the one in the entrance area 10 a dust filter 11 is assigned to the completely the particles such as dust, water droplets, as well as harmful particles in the air before entering the fresh air supply unit 8th filters out. The fresh air supply unit 8th is mechanical with at least one fastening element of a fastening unit 9 connected to wearing the system 1 on the human body. The fastening unit 9 can be designed in many ways, for example from a belt or a strap with a Velcro fastener that is placed around the waist of the human body and closed with the Velcro fastener. The fresh air supply unit 8th includes a fan 12th , which is driven by a low-noise electric motor, with particular emphasis on low-noise operation of both the fan and the electric motor, so that the noise level is far below the level that interferes with communication between people. Between the fresh air supply unit 8th and the ventilation element 2 , which can be designed as a headband, is a high-quality filter at a suitable point 7th arranged, which is designed as a so-called HEPA filter. This HEPA filter can also be used elsewhere in the system 1 to be ordered. The one from the high-quality filter 7th Exiting fresh air is via a pipe 14th the ventilation element 2 supplied from which the fresh air flows 6th , 6 ' step out. The different fresh air currents 6th , 6 ' are by the arrows 6th and 6 ' is symbolized. The length of the arrows 6th , 6 ' characterize the air exit speed of the exiting air flow. From this it can be seen that the speed of the air flow 6th at the edge of the entire air flow 5 is greater than that of the air flow 6 ' , which in the present embodiment is the face of the human head 4th is facing.

The face of the system 1 The person carrying it is affected by a current of air 5 (Veil), which is indicated by vector arrows pointing downwards, the longer vector arrows 6th as where described, symbolize a stronger current. Since viruses, bacteria and other pathogenic germs can generally occur in a closed space, it is expedient and desirable to keep the concentration of such pollutants as low as possible in order to reduce the risk of infection in the system 1 to reduce the person carrying it. So that the pathogenic germs emitted by a third person in the room do not reach the respiratory organs and the airways of the human body, there is a stronger air flow between the person carrying it and the person facing this person 6th as a veil 5 arranged, the function of which is to prevent or keep away the possible pathogenic pollutants from the person carrying. The stronger current 6th is generated by a special device that can be designed as a nozzle. The at least one nozzle is in the lower area of the ventilation element 2 arranged.

the 2 shows a schematic top view of the human head 4th on which a ventilation element 2 is arranged above the respiratory organs of the human head. That on the human head 4th arranged ventilation element 2 has in the present embodiment a plurality of air outlet openings 3 , 3 ' from which the purified fresh air emerges at different speeds and thus in front of the face of the human head 4th a veil 5 forms. The flow velocities from the individual air outlet openings 3 , 3 ' are set with the help of regulating elements, not shown here, such as flap slides and flow direction elements, so that on the one hand they do not impair free breathing through the respiratory organs, nose and mouth and, on the other hand, guarantee unadulterated and undamped speech. The air outlets 3 , 3 ' can take on different shapes, such as slot-shaped, oval or round, depending on which embodiment of the air outlet openings is the most silent variant. The quietest variant can also consist of a combination of the individual embodiments. The ventilation element 2 can be made of a material that is flexible per se, such as a suitable plastic, so that the ventilation element 2 adapts to the individual head shape of the wearer. In the event that the ventilation element 2 is made of a less flexible material, such as metal, it is useful between the ventilation element 2 and the head 4th elastic elements 17th , such as foam pieces, to be arranged that are soft and uncomplicated adapt to individual head shape. At both ends 18th of the ventilation element 2 is each a connecting element 19th arranged with which the line 14th is connected to the fresh air supply. Of course, there are other connection locations on the ventilation element 2 also conceivable.

the 3 shows a schematic side view of a human head 4th on which a ventilation element 2 is arranged above the respiratory organs nose and mouth. The ventilation element 2 is on a line 14th connected, the other hand with a fresh air supply unit 8th connected is. In the fresh air supply unit 8th is a fan 12th arranged, on the one hand, the required air volumes 21 sucked in and this required amount of air 21 a pre-filter 22nd supplied, which filters out coarse particles such as dust or similar particles, so that such particles are the main filter 23 do not burden. In this embodiment is the main filter 23 designed as a HEPA filter. The main filter 23 can also be found elsewhere in the system 1 , for example between the fresh air supply unit 8th and the ventilation element 2 to be ordered. In the present exemplary embodiment of the ventilation element 2 is above the ventilation element 2 a bypass 2 ' arranged by the ventilation element 2 Fresh air is supplied in the front area in order to advantageously influence the control of the various air flows. In the present embodiment of the invention are in the lower area of the ventilation element 2 at least two air outlet openings 3 , 3 ' arranged, from which the amounts of air emerge with different flow velocities v. The air outlet opening 3 a higher flow rate than the flow rate from the air outlet opening 3 ' . Both air currents contain the purified and filtered amounts of air that the person carrying the system needs to breathe. The stronger air jet 6th coming out of the nozzle 3 escapes, thus fends off all polluted air volumes so that they do not get into the vicinity of the human respiratory organs, nose and mouth. In the direction of flow in front of the air outlet opening 3 , 3 ' are flow control elements 24 arranged, with which the direction and intensity of the respective currents can be adjusted.

the 4th Figure 3 shows a schematic view of the system 1 in the direction of arrow B in 3 . The system is just like in 2 depicted on the head 4th Set on above the respiratory organs, nose and mouth. The veil 5 is composed, as already mentioned, of at least two partial flows 6th and 6 ' together. The partial flow 6th is done up in an area that is in front of the ears 25th is introduced in order to avoid that polluted air amounts into the flow area 6 ' which can then be inhaled.

the 5 shows a graphic representation of the flow velocities v as a function of the distance d to the face of the human head 4th , measured along section line AA 'in 1 . In this illustration, the flow velocity v is plotted on the abscissa and the distance d from the face is plotted on the ordinate. The measuring points of the curve 20th were in a cross-sectional plane of the veil 5 recorded. The curve 20th shows essentially the cross-sectional profile that results from the interaction of the various flows within the barrier curtain 5 is formed at different speeds from the air outlet openings 3 , 3 ' of the ventilation element 2 emanate. The cross-sectional profile also shows that the flow velocity is in the immediate vicinity of the face of the human head 4th is relatively small and with increasing distance d from the face becomes stronger and stronger up to a certain maximum at distance c and then drops off steeply. This characteristic cross-sectional profile means that in the immediate vicinity of the field of vision the fresh air flow is sufficiently available to the respiratory organs, nose and mouth, and at the same time, at a certain distance c from the field of vision, contaminated air from the face from penetrating the fresh air curtain 5 and thus the respiratory organs cannot come into contact with polluted air masses. The height of the maximum of the flow velocity at distance c from the face and the minimum in the immediate vicinity of the face, practically at the zero point of the graphical representation, can be adjusted with the help of control elements, such as flaps, flow control elements or the like. Both on the ventilation unit 2 as well as on the fresh air supply unit 8th adjusted and regulated. In the event that different people operate in an enclosed space 1 can be applied by any single system 1 from a control center 15th can be adjusted and regulated.

In summary, it can be stated that with the present invention a method and a system operating according to this method 1 to create a barrier veil 5 in front of the field of vision of a human head 4th is presented. The veil 5 is through a ventilation element 2 that produces special nozzle arrangements 3 , 3 ' having. The present invention also provides a system 1 disclosed, which on the one hand has a comparatively low energy consumption and on the other hand a high degree of purity of the air quality in the protective curtain 5 supplies, with the air currents 6th , 6 ' a characteristic profile 20th produce that on the face of the human head 4th away side stronger is designed as the face facing side of the air flow 5 . The fresh air is supplied by a fresh air supply unit 8th generated and a ventilation element 2 fed, which is designed similar to a headband. In the special fresh air supply unit 8th at least one main filter works 23 , which is designed as a so-called HEPA filter, advantageously with the entire system 1 together so that the field of vision and thus the respiratory organs are constantly surrounded by sterile air. Furthermore, individual systems 1 and ventilation elements 4th individually controlled and operated in a network, if this appears necessary from the given external conditions.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 1127588 B1 [0003]

Claims (10)

System (1) for protecting the respiratory tract of the human body, with a ventilation element (2) with at least one air outlet opening (3, 3 '), characterized in that the flow rate of the air volume exiting from the air outlet opening (3, 3') is a barrier curtain ( 5) in the direction of the face of the human head (4) facing side is less than the side facing away from the face. System according to Claim 1 , characterized in that the exiting air quantities are filtered, wherein at least one filter (7) can be a HEPA filter, which filters out viruses, bacteria, pathogenic germs and other pollutants. System according to Claim 1 and 2 , characterized by at least two air outlet openings (3, 3 ') from which the air emerges at different flow speeds. System according to Claim 1 , characterized by a fresh air supply unit (8) which is arranged separately from the ventilation element (2) and is fastened with a fastening unit (9) at a suitable point on the human body. System according to Claim 1 , characterized in that at least that part of the ventilation element (2) which is arranged directly on the human head (4) is flexible, for example made of plastic or a combination of metal and foam. System according to one of the preceding claims, characterized in that the entire ventilation element (2) is made of a flexible material. System according to one of the preceding claims, characterized in that a filter (11) is arranged in the entrance area (10) of the fresh air supply unit (8), which filters out at least coarse particles such as dust or moisture droplets. System according to one of the preceding claims, characterized in that the main filter (7), which is arranged as a HEPA filter between at least one air flow-generating fresh air supply unit (8) and the ventilation element (2). System according to Claim 1 , characterized in that the fresh air supply unit (8) is fastened to the human body (arm, hip, back) with a fastening means (9), such as a belt, belt, clasp or Velcro fastener. System according to one of the preceding claims, characterized in that the ventilation element (2) is designed as a headband and has graphic applications, patterns or images on its visible surfaces that are designed in terms of design.

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