DE202020002341U1 - Ventilated respirator - Google Patents

Abstract

Respirators body ventilated (1), a filter protection grille (4a), with a mask base (11a), a fan electric motor (9a), a UV-C LED (10a).

Description

The invention relates to a breathable, ventilated breathing mask that covers the nose and mouth of the wearer.

Signs of SARS-CoV-2 (English Severe-Acute-Respiratory-Syndrome-Coronavirus 2, German: severe acute respiratory syndrome-Coronavirus 2), the currently rampant pandemic, breathing masks and mouthguards can reduce the risk of transmission of viruses . Respiratory masks of the usual type can protect the wearer from aqueous and oily aerosols, pollen, smoke, asbestos residues and fine dust particles. The protective function is standardized in Europe in EN149 and divided into the three protection classes FFP-1, FFP-2 and FFP-3 (FFP English filtering face piece). Also referred to as particle filtering half masks or fine dust masks. The mask handling should be simple, easy to use or easy to put on and take off. By covering the nose and mouth, the inhalation of said pollutants should be prevented as much as possible. Respiratory masks usually consist entirely of filter material arranged in several layers and can optionally be equipped with an exhalation valve. The valve ensures the tightness of the respiratory mask by preventing the air from lifting up the mask sealing edge during exhalation and escaping underneath and only being discharged through the exhalation valve. The filter material generally consists of nonwovens, structures of fibers of limited length, continuous fibers (filaments) or cut yarns of any kind and of any origin, which have been combined in some way to form a nonwoven, a layer of fibers, a pile of fibers and have been connected to one another in some way. Respiratory masks are usually attached to the head of the wearer with the help of a holding band (rubber band) and optionally a holding device.

An important criterion of respirators is the breathing resistance, the resistance that the wearer feels or exerts while breathing in and out. The 3 protection classes FFP-1, FFP-2 and FFP-3 differ according to the number of filtered particles. Protection class FFP-1 filters at least 80 percent of the particles, FFP-2 94 percent and FFP-3 99 percent. As the particle filter rate increases, the number of layers of filter material used also increases. The filter materials of the respirator masks in the higher protection classes are becoming denser and consequently cause greater breathing resistance. In turn, greater breathing resistance can be a major disadvantage for older or previously stressed people with respiratory diseases, lung restrictions. Also disadvantageous for people who are exposed to increased physical stress. Another disadvantage relates to the reusability of conventional FFP respirators. After using / using the FFP respirators, NO reuse or reuse is intended, the masks must be replaced. This is in times when respiratory masks for medical personnel, law enforcement officers and the population are in short supply.

The stated invention in protection claim 1 has the task of developing a respirator mask which despite a high filter protection class (FFP-3) has a lower breathing resistance, which is reusable and thus more sustainable.

The implementation of the task is solved with the features listed in claim 1, a ventilated 3D print 1 Respirators 1, covering the wearer's nose and mouth. Consisting of polylactide (PLA for short, polylactic acid). A synthetic polymer that belongs to the polyesters. These are used to make plastic that is derived from renewable sources, such as corn starch. This makes PLA a biocompatible raw material. Two straps (rubber bands), which are attached to the respirator at 4 stops, are used for comfort. The straps pull the mask body against the wearer's face. With the help of a seal, the mask lies flush and airtight on the face surface of the mask wearer.

The invention enables the respirator wearer to breathe more freely due to a lower breathing resistance, even with greater physical exertion or stress with a high particle filtering capacity (FFP-3). HEPA (English: High-Efficiency-Particulate-Air, German air filter with high effectiveness against particles) filter surface resembles paper in appearance, consisting of particularly close-meshed fabrics made of cellulose, synthetic fibers or glass fibers. The filter or the filter pad (German upholstery) is made to measure, conform to the filter insert and is fixed with a filter grille. A mini e-fan is located in front of the filter, which sucks in the breathing air to be filtered through the filter material and ensures the required air throughput in the mask body to ensure lower breathing resistance for the mask wearer. After use, the filter can be replaced with a new filter material of choice (FFP-1..3) and the respirator can be reused after cleaning or disinfection. In addition to mechanical filtering, microbes, such as bacteria, viruses and fungi, if still present, are inactivated within seconds using a UV-C LED (Light Emitting Diode).

An embodiment of the invention is in the 1 to 6 explained.

• 1 Frontansicht Maske 1, Halteband-Aufnahme 2, Halteband 3, Filterschutzgitter 4a, mit Ein/Ausschalter 5, Drehpotentiometer 6, Ladebuchse 7a,
• 2 Frontansicht Maske 1 mit Lüfter E-Motor 9a, Lüfter-Flügelrad 9b, Filter 8, Filterschutzgitter 4a und Filterschutzgitter Halteclips 4c,
• 3 Rückansicht Maske 1, Filtergitter/Träger 4e, Lüfter-Rahmen 9c, Lüfter-Bohrung Bef. 9e, Lüfter-Flügelrad 9b, Lüfter E-Motor 9a, Filterschutzgitter Halteraufnahme 4b, Lüfter-Befestigung 9d, Filterschutzgitter Erhebung 4d, UV-C LED 10a, Hebegriff obere Abdeckung 11c, Hebegriff untere Abdeckung (Wartungsklappe) 11e,
• 4 Rückansicht Maske 1 mit UV-C LED 10a, LED Sockel 45° 10c, Basis Gitter 12,
• 5 Rückansicht Maske 1 mit Lüfter-Bohrung Bef. 9e, Filtergitter/Träger 4e, Filterschutzgitter Halteraufnahme 4b, LED Sockel 45° 10c, Maskenbasis 11a, Basis Gitter 12, Silikon Profildichtung 13a und Nasenträger 13b,
• 6 Draufsicht Maskenbasis mit UV-C LED 10a, Maskenbasis 11a, Ladeelektronik 7b, Lüfter-Drehzahlelektronik 9f, Akkus 7c, Arretierung obere Abdeckung 11i, Scharnieraufnahme untere Abdeckung 11h, ein/ausraste Schlitten Hebegriff untere Abdeckung 11g, Maskenbasis untere Abdeckung 11d, Hebegriff untere Abdeckung 11 e, Scharnier untere Abdeckung 11f, Träger-Schraube 111, Fixierzähne 11k, L-Träger 11j, LED Ausschnitt 10b, Maskenbasis obere Abdeckung 11b, Hebegriff obere Abdeckung 11c.

Show it

• 1 Front view mask 1 , Tether attachment 2nd , Tether 3rd , Filter protection grille 4a , with on / off switch 5 , Rotary potentiometer 6 , Charging socket 7a ,
• 2nd Front view mask 1 with fan electric motor 9a , Fan impeller 9b , Filter 8th , Filter protection grille 4a and filter protection grille holding clips 4c ,
• 3rd Rear view mask 1 , Filter grid / carrier 4e , Fan frame 9c , Fan bore fitting 9e, fan impeller 9b , Fan electric motor 9a , Filter protection grille holder holder 4b , Fan attachment 9d , Filter protection grille survey 4d , UV-C LED 10a , Top cover lifting handle 11c , Lower cover lifting handle (maintenance flap) 11e ,
• 4th Rear view mask 1 with UV-C LED 10a , LED base 45 ° 10c, base grid 12th ,
• 5 Rear view mask 1 with fan hole, fitting 9e, filter grille / support 4e , Filter protection grille holder holder 4b , LED base 45 ° 10c, mask base 11a , Base grid 12th , Silicone profile seal 13a and nose straps 13b ,
• 6 Top view of mask base with UV-C LED 10a , Mask base 11a , Charging electronics 7b , Fan speed electronics 9f , Batteries 7c , Top cover lock 11i , Hinge mount lower cover 11h , engage / disengage slide lifting handle lower cover 11g , Mask base lower cover 11d , Lower cover lifting handle 11 e, hinge bottom cover 11f , Carrier screw 111 , Fixing teeth 11k , L-beam 11j , LED cutout 10b , Mask base top cover 11b , Top cover lifting handle 11c .

Reference list

(1)

Masks body

(2)

Tether attachment

(3)

Tether

(4a)

Filter protection grille

(4b)

Filter protection grille holder holder

(4c)

Filter protection grille holding clips

(4d)

Filter protection grille elevation / locking

(4e)

Filter grille / carrier

(5)

On / off switch

(6)

Rotary potentiometer

(7a)

Charging socket

(7b)

Charging electronics

(7c)

Batteries

(8th)

Filter insert (pad)

(9a)

Fan electric motor

(9b)

Fan impeller

(9c)

Fan frame

(9d)

Fan attachment

(9e)

Fan bore fitting

(9f)

Fan speed electronics

(10a)

UV-C LED

(10b)

LED cutout

(10c)

LED base 45 °

(11a)

Mask base

(11b)

Mask base top cover

(11c)

Upper cover lifting handle

(11d)

Mask base lower cover (maintenance hatch)

(11e)

Lower cover lifting handle (maintenance flap)

(11f)

Hinge lower cover (maintenance hatch)

(11g)

engage / disengage slide lifting handle lower cover (maintenance flap)

(11h)

Hinge mount, lower cover (maintenance flap)

(11i)

Top cover lock

(11j)

L-beam

(11k)

Fixation teeth

(11l)

Carrier screw

(12)

Base grid

(13a)

Silicone mask profile seal

(13b)

Silicone nose strap mask

The perspective figures represent the ventilated breathing mask with the following individual components. 2nd shows the ventilated PLA respirator body 1 , Elastic band holder 2nd who have favourited Retaining Elastic Bands 3rd . The filter protection grille 4a covers the filter 8th or protect the material. With the on / off switch 5 becomes a fan electric motor (mini fan) 9a switched on. This drives a fan impeller 9b on. Additional air is drawn through the filter protection grille 4a and the filter 8th sucked in and provides ventilation or necessary air flow. The additional air flow reduces the breathing resistance in the breathing mask 1 .

The air flow is controlled by the fan impeller 9b Speed (short RPM English Revolution Per Minute, German Revolutions Per Minute) of the mini fan 9a determined and can with the rotary potentiometer 6 and the in 6 Speed control electronics 9f can be regulated manually as required. About the 2nd Charging socket (Mini USB) 7a and the in 6 Charging electronics 7b are the in 6 Batteries 7c , which serve for the voltage supply of the electronic components, charged. The current state of charge, which in 6 Batteries 7c is fully charged via the colors "green" and "red" discharged with an LED in the 2nd On / off switch 5 displayed. In the 6 UV-C LED shown 10a is behind that 2nd Fan electric motor 9a attached to a base 45 ° 10c and illuminates the inner intake air area of the at a 45 ° height angle h 2nd Respirator 1 out. In 4th becomes the UV-C LED 10a Illumination of the air intake area illustrated at a 45 ° height angle h. The 6 UV-C LED 10a is with the in 2nd On / off switch 5 turned on and emits a far ultraviolet light with a low-threshold wavelength of 222 nanometers. This light has a germicidal effect and inactivates microbes, bacteria, viruses and fungal spores in the air drawn in. Far ultraviolet light is harmless to humans. A positive effect is the disinfectant effect of the emitting light from the 6 UV-C LED 10a on the inner walls of the respirator.

The in 2nd filter 8th is a perfect fit, compliant with the 3rd Filter grille / carrier 4e manufactured and can easily be changed or exchanged according to your choice or requirements (FFP 1-3). The is fixed 2nd filter 8th through the filter protection grille 4a , the side, left and right holding clips 4c has that in the 3rd Filter holding fixtures 4b the mask 1 click into place. For an additional locking / fixation of the in 2nd Filter protection grille 4a and the filter 8th serve in 3rd the 4 surveys 4d on the outer edges of the air intake area of the respirator body 1 .

The fan electric motor 9a in 3rd is inside the mask on the back of the filter grille / support 4e in the middle with 4 fastening screws 9d screwed. As a mounting bracket are in 3rd 4 fan holes 9e in the fan frame 9c and 5 4 fan holes 9e in the filter grid / carrier 4e intended. The fan electric motor 9a in 2nd is via the on / off switch 5 switched on. The fan electric motor speed (RPM) can be adjusted using the rotary potentiometer 6 and the in 6 Fan speed electronics 9f can be regulated from 0 to 7000 RPM. A maximum air throughput of approx. 7.5 m ³ / h can thus be achieved.

The mask base 11a in 6 serves as an accommodation for the charging electronics components 7b , Fan speed electronics 9f and the batteries 7c . Over the mask base 11a is that in 4th Base grid 12th on which the UV-C LED 10a is attached. In the 6 shown mask base 11a and their electronic components come with the mask base top cover 11b covered. A perfectly fitting LED cutout 10b Illuminates the intake air area when the mask base is closed 11b for sure. The top cover lift handle 11c and the top cover latch 11i loosen and fix the mask base top cover 11b . The mask base of the lower cover serves as maintenance access for the individual internal electronic components 11d (Maintenance hatch). This can be opened and closed with the hinges on the bottom left and right hinges 11f (Maintenance hatch) and the hinge mounts lower cover 11h (Maintenance hatch) on the mask base 11a . For opening and closing the mask base bottom cover 11d (Maintenance flap) is used for a lower cover lifting handle 11e (Maintenance hatch) and the on / off slide lifting handle lower cover 11g (Maintenance hatch) on the mask base 11a .

Claims (16)

Respirators body ventilated (1), a filter guard (4a), with a mask base (11a), a fan electric motor (9a), a UV-C LED (10a). Respiratory masks ventilated after Claim 1 , characterized , with a removable filter protection grille (4a), with 2 filter protection grids holding clips (4c). Respiratory masks ventilated after Claim 2 , characterized in that the respirator body has 4 filter protection grille elevations (4d) and 2 filter protection grille holder receptacle (4b) in the middle left and right on the outer edges of the front intake air region. Respiratory masks ventilated after Claim 3 , characterized in that it has an on / off switch (5) which is fastened in the middle, below the front mask of the intake air region. Respiratory masks ventilated after Claim 1 to 4th , characterized in that a rotary potentiometer (6) is attached in the middle, on the side, on the right in the direction of wear, below the front mask area of the intake air. Respirators ventilated according to one of the body Claims 1 to 5 characterized in that it has a charging socket (mini-USB) (7a) which is let in under the front mask on / off switch (5). Respirators ventilated according to one of the body Claims 1 to 6 characterized in that the respirator body has 4 holding strap receptacles (2). Respiratory masks ventilated after Claim 7 , characterized , an integrated mask base (11a) in the form of a half cylinder, which has guides on the upper longitudinal edges (left & right). Respirators ventilated according to the body Claims 7 to 8th , characterized in that in the integrated mask base (11a) the electronic components charging electronics (7b), fan speed electronics (9f) and batteries (7c) are held on an L-beam (11j) with fixing teeth (11k). The L-bracket is fixed in the mask base with 6 bracket screws (11l). Respirators ventilated according to the body Claims 7 to 9 , characterized in that the integrated mask base (11a) has 2 hinge receptacles (11h) and a slide-in / out slide (11g). Respirators ventilated according to the body Claims 7 to 10th , characterized in that the integrated mask base (11a) has a lower maintenance flap (11d) with a lifting handle (11e) to which 2 hinges (11f) are attached. Respirators ventilated according to the body Claims 7 to 11 , characterized in that the integrated mask base (11a) has an upper cover (11b) with an upper lifting handle (11c), with chamfered longitudinal edges and a precisely fitting cutout (10b), conforming to the UV-C LED (10a) dimension. Respirators ventilated according to the body Claims 7 to 12th , characterized in that on the base grid (12) of the integrated mask base (11a), an LED base 45 ° height angle (10c) is attached. Respirators ventilated according to the body Claims 7 to 13 , characterized in that a UV-C LED (10a) is attached to the 45 ° height angle (10c) on the LED base. Respiratory masks ventilated after Claim 14 , characterized , has a fan electric motor (9a) in the inner mask area. Screwed on with 4 fastening screws (9d) in the middle of the inner side of the filter grid / support (4e). Respiratory masks ventilated after Claim 15 , characterized in that a silicone mask profile seal (13a) is attached to the outer edge of the mask, with a silicone nose support (13b).

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