EP2906303A2 - Masque facial pourvu d'une soufflante - Google Patents

Masque facial pourvu d'une soufflante

Info

Publication number
EP2906303A2
EP2906303A2 EP13805236.0A EP13805236A EP2906303A2 EP 2906303 A2 EP2906303 A2 EP 2906303A2 EP 13805236 A EP13805236 A EP 13805236A EP 2906303 A2 EP2906303 A2 EP 2906303A2
Authority
EP
European Patent Office
Prior art keywords
frame
face shield
hose connection
mask
connection adapter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13805236.0A
Other languages
German (de)
English (en)
Inventor
Hans-Peter MOZGA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PM Atemschutz GmbH
Original Assignee
PM Atemschutz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PM Atemschutz GmbH filed Critical PM Atemschutz GmbH
Publication of EP2906303A2 publication Critical patent/EP2906303A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/006—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort with pumps for forced ventilation
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/286—Ventilating arrangements with forced flow, e.g. by a fan
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/003—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort having means for creating a fresh air curtain
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/04—Couplings; Supporting frames

Definitions

  • the invention relates to a face shield and its frame, as well as a ventilation device.
  • a particularly important component of protective clothing is the face mask. It protects most sensory organs of the wearer. Therefore, face masks in the workplace are in many areas indispensable aids and protective tools that give the working person the necessary security so that he can devote himself freely to fears and distractions of his activity. Face masks in particular protect against Pollutants and odors of gaseous substances. They prevent direct contact with liquid media and also provide protection against splinter and solid-state effects.
  • the basic structure of such masks is a frame to which a screen is attached, a cushion which serves as a seal on the one hand and also protects the wearer from excessive pressure through the frame and a fastening strap which secures the mask to the head of the wearer. All of these components must be carefully selected and matched so that the seal and comfort of the mask are optimal.
  • TH1 means a maximum permissible internal leakage of 10%
  • TH2 a maximum permissible internal leakage of 2%
  • TH3 a maximum permissible internal leakage of 0.2%.
  • the market standard today is the TH3 protection class.
  • the protection class TH3 is very difficult to achieve, especially if the wearer has a beard or is dependent on glasses. These always cause significant leakage between the mask and the wearer's face.
  • filter devices If there is no knowledge of the environmental conditions, the carriers must not take in air from the environment or release exhaled air to the environment. It is therefore not allowed to use filter devices.
  • the tools of choice are insulation devices that provide their own air supply, with supply and exhaust air reservoirs. Even in confined spaces, no filter devices are used, since the high oxygen consumption can lead to an oxygen deficiency, which can have harmful effects for the respective mask wearer.
  • oxygen-displacing gases such as carbon monoxide and carbon dioxide are also formed. The rule is that filter units may only be used with an oxygen content of 18 - 23 vol.% Of the room air.
  • Such insulation devices ie devices that ensure an air and exhaust air supply, which is independent of the direct indoor air, also have the advantage that no filters must be used. If in doubt, always use combination filters that protect against both particles and gases. Many of these filters or combination filters can only be used once, such. Ex. Particulate filter against radioactive substances, microorganisms such as viruses, bacteria, fungi and their spores. This represents a significant cost factor in the use of protective clothing.
  • Such systems which are equipped with an independent supply and exhaust air supply, so can ensure the greatest possible security for the wearer.
  • the prior art already knows these systems, which is a breathing device incorporated in the face mask.
  • the supply air (supplied air) and the exhaust air (discharged air) are introduced via a hose into the face mask or discharged.
  • these masks have the disadvantage that the supply air usually has a different temperature than the room temperature. This leads to misting of the mask visor and prevents the mask wearer at the free view.
  • a protective helmet can not be worn next to the mask if the mask safety device and hose insertions are not attached to the lower mask part. In the case of an unfavorable supply of the air, this can even have a disturbing effect on the mask carrier, since it blows it into the eyes or nose.
  • the object of the present invention is therefore to provide a face shield, which allows its wearer to carry out his work without visual obstructions and without loss of security.
  • blower-assisted face shield system which consists of the following components, namely a frame which is hollow in its interior and there has a conduit system and openings, and wherein the frame has at least one receiving device, which at least one hose connection adapter or a Can accommodate a hose connection, a visor, which is attached to the frame, and at least one hose connection adapter, which can be received by the receiving device and which is designed such that a supply air flow is introduced into certain lines of the conduit system.
  • such a mask or face shield system is basically constructed such that a frame to which a screen is attached is lined with a cushion at its edges, which serves as a seal on the one hand and also the carrier against excessive pressure preserved by the frame edges. Furthermore, usually ensures a fastening tape that the Mask remains on the head of the wearer. All of these components must be carefully selected and matched so that the seal and comfort of the mask are optimal, as the wearer breathes the air within the mask, ie inside the mask.
  • This invention provides the wearer of the face shield with the ability to direct the supply air flow in a desired direction.
  • the incoming air which is inhaled by the wearer of the face shield, is passed through a hose and subsequently through the hose connection adapter and the receiving device into the pipe system, which is located inside the hollow frame. It exits through the openings in the frame.
  • the hose connection adapter is now set up so that it can introduce the supply air into certain lines.
  • the cables, which are located inside the frame are created all around the entire field of view.
  • the openings that let the air out of the pipes are directed into the interior of the mask. So the air can be directed into the lines, in which it is to be introduced.
  • the mask frame may be made of polyethylene or another stable, light and inert material.
  • the frame material must be able to absorb the facial shield. It must not be too heavy, so that the mask wearer is not too much burden.
  • the material must be able to accommodate holes and fixtures without losing stability.
  • the frame of the face shield system according to the invention is hollow inside and has there a line system. This line system is determined in the simplest case by the cavities in the frame itself. But it can also be laid lines in the form of hoses.
  • the piping system can be located in the part which limits the visual field. The air is passed through this piping system and exits from the openings. These openings can basically be found everywhere on the frame. The openings are but in particular on the face, chin and the sides of the frame.
  • the openings end the inhaled air into the inside of the mask. Openings that break the frame to the outside are useless and significantly limit the tightness of the mask.
  • the sealing material is then applied at the edges of the mask.
  • This can be made of rubber, foam or silicone. Silicone is due to its elastic properties and its high Tightness usually the means of choice, especially if a high level of protection, such as TH3 should be guaranteed.
  • sealing material of the mask edge can better conform to the head shape of the wearer. This in turn increases the tightness of the mask.
  • the mask bands can be made of any durable material. It only has to be elastic enough to guarantee the secure hold of the mask on the head of the wearer, even under heavy load. Comfort also plays a big role here.
  • the visor of the mask is held by the frame. It is made of a transparent material, is light and possibly scratch resistant. The larger the visor of the mask, the greater the visibility of the wearer. Special glass, plastics, such as transparent polycarbonate are common here.
  • the connection between the mask frame and the visor should be as air tight as possible. Here applies, as with the contact edge head / mask frame, as little foreign bodies, especially gases should be able to get into the interior of the mask.
  • the frame also has at least one receiving device for at least one hose connection adapter.
  • the hose connection adapter now ensures that the air is introduced into certain lines of the pipe system.
  • the hose for the supply air (breathing air) is attached to the hose connection adapter.
  • the air conducted through this supply air can then be conducted by means of the adapter into the conduits or cavities which direct the supply air to the openings in the frame top or to the openings in the frame bottom or to the openings in the respective frame sides.
  • part of the supply air can be directed to the "upper openings" and at the same time another part to the "lower openings". This is then also possible for the supply to the side openings.
  • the hose connection adapter is designed so that it protrudes into the receptacle of the frame and into the hollow frame itself. This design ensures the greatest possible tightness at the hose connection adapter / frame interface Air flow is led into the system far. Thus, there is no risk that contaminated air is conducted into the interior of the mask.
  • the hose connection adapter has in its interior at least one means for channeling the supply air flow.
  • the supply air which the wearer of the face shield inhales is led through a hose into the hose connection adapter.
  • the hose connection adapter is hollow inside so that the air can flow through it. Externally on the hose connection adapter has this means to which the hose can be attached to the Schluean gleichadapter.
  • the hose connection adapter is connected to the frame of the face shield. This has a receiving device for the Schlauan gleichadapter. Inside the adapter is now the means for channeling, a device or a mechanism that provides for the supply of air flow in the desired direction or in the desired part of the line system.
  • This supply device the means for channeling the air flow can now be arranged within the hose connection adapter or at its end.
  • the hose connection adapter is cylindrical and designed to be rotatable about its own axis, and the means for channeling the supply air flow is achieved by partially closing off the cylindrical hose connection adapter on the inside of the mask.
  • the cylindrical hose connection adapter can be easily inserted into a round receiving device on the frame, wherein the rotatability of the adapter about its own axis now for the variable orientation of the closed, so non-air bearing part or for the alignment of the open end of the adapter in relation to the lines of the piping system. If the lines leading to the mask front part are covered by the non-air-conducting part, air can not flow there. In order for supply air to enter the pipes, they must be brought into conformity with the open end of the adapter.
  • the means for channeling the air flow is a disk which is approximately the diameter of the hose and is partially closed. This disc is located in the hose connection adapter in front of the lines that lead the supply air in the mask frame and can by rotation of the lines wear out in whole or in part, so that the supply air can flow only in a certain amount or not at all through the lines.
  • the adapter itself is preferably connected to an adjustment means which is not located inside the adapter.
  • the adjustment can be easily made by the wearer and changed at any time without much effort.
  • the hose connection adapter is of cylindrical design and the means for channeling the supply air flow consists of a constriction piece growing in the interior of the cylindrical hose connection adapter towards the interior of the mask.
  • This embodiment guides the airflow past the throat to the air ducts in the mask. If the restriction piece obstructs the line, no air can get there.
  • the adapter itself is preferably connected to an adjustment means which is not located inside the adapter. Thus, the adjustment can be easily made by the wearer and changed at any time without much effort.
  • the air flow is now passed through the mask frame to the subsequent openings and transported the air there.
  • this is designed so that the hose connection adapter projects so far into the hollow frame of the mask and receiving device that no foreign air, which is not supplied through the hose, can penetrate into the interior of the mask.
  • the air supplied can be pressed into the system at such a pressure that there is a slight overpressure in the interior of the mask in relation to the outer space out of the mask inside and not inward into the interior of the mask, flow.
  • the air escapes preferably through a breathing valve.
  • this is characterized in that the receiving device for the hose connection adapter is attached to the rear side on a lower frame part
  • the mask on the upper half is not stretched by functional requirements, since no receiving device for the hose connection adapter takes up space.
  • the rear attachment of Zu Kunststoffschlauches is the balance of the mask and leaves enough space to attach the largest possible visor, so that the field of view of the mask wearer is as large as possible.
  • Such a generous structure of the face shield still offers the possibility that the mask interior can also be pulled far forward.
  • the wearer of the mask can have a very large breathing area.
  • the introduced breathing air can circulate longer in this breathing area and thus temperature fluctuations between the supplied and located in the mask interior air can be compensated.
  • a fogging of the visor is hereby prevented. Beard and eyeglass wearers can wear mask or face shield without hindrance.
  • a hair net under the shield or the mask without problems is wearable. If the exhalation valve is close to the mouth of the mask wearer, the spent air is quickly disposed of from the mask interior and the wearer breathes the supplied air.
  • Such a construction and shape-related design of the face shield makes it possible to additionally limit the height so that a helmet can be easily worn to protect the head.
  • the fan-assisted face shield system is configured such that the openings provided in the frame are provided with means for air deflection. These means of air deflection ensure a uniform flow of air into the interior of the mask. Air turbulence and one-sided ventilation are prevented.
  • the means for air deflection are arranged cascading growing. This allows complete and even air deflection.
  • a further preferred embodiment of the invention comprises on the frame of the face shield a seal, preferably made of a silicone strip, which is folded over is, wherein the seal is such that it conforms to the head of the wearer.
  • the Umfalzung the silicone strip and the pressure generated by a tension on the head of the wearer ensures a complete density at the interface mask edge and head of the mask wearer.
  • the face shield system is characterized in that the visor is fastened to the mask frame with a rotary closure, wherein the rotary closure is configured such that the visor is flush and conclusively pressed against the frame with at most three complete revolutions of the rotary closure.
  • the visor is fastened to the mask frame with a rotary closure, wherein the rotary closure is configured such that the visor is flush and conclusively pressed against the frame with at most three complete revolutions of the rotary closure.
  • This allows the visor to be quickly and easily separated from the frame and replaced by a new visor. Visors can be scratched, soiled or even damaged during the operation, so that an exchange is inevitable. The sooner such an exchange can be made, the faster the work can be continued. Thread and turning means should be designed solid and stable, so that they exercise with a sufficiently large pressure on the mask frame and can withstand even.
  • this is constructed modularly from all its components. This means that all items can be replaced quickly and inexpensively.
  • FIG. 1 shows a schematic drawing of an embodiment of a mask.
  • FIG. 2 shows two schematic drawings of an embodiment of the hose connection adapter according to the invention.
  • FIG. 3 shows a further embodiment of the connection adapter according to the invention.
  • FIG. 4 shows several schematic drawings illustrating the possible paths of the air flow.
  • Figure 5 shows a possible embodiment of the openings in the frame
  • FIG. 1 shows a schematic drawing of an embodiment of a mask.
  • the valve not only compensates for the air to be disposed of, but also blows air out of the interior of the mask, even with overpressure.
  • the visor 4 is sufficiently ventilated by the fan, which blows the air from the holes provided in the interior of the mask and can not mist.
  • FIG. 2 shows two schematic drawings of an embodiment of the hose connection adapter 6 according to the invention.
  • the hose connection adapter 6 projects into the receiving device of the frame and the hollow frame itself.
  • a means for channeling the supply air stream 7 is present in the hose connection adapter.
  • the hose connection adapter 6 is cylindrical and partially designed to be rotatable about its own axis.
  • the means for channeling the supply air stream 7 is achieved by partially closing off the cylindrical hose connection adapter 6 on the inside of the mask.
  • the supply air which inhales the wearer of the face shield, is passed through a hose into the hose connection adapter 6.
  • the hose connection adapter 6 is hollow inside so that the air can flow through it.
  • the hose connection adapter 6 is partially, namely here closed to half.
  • the air ducts, in this present image two, are separated by a web on this web lies on the end of the hose connection adapter 6 and is fixed in a certain position before further rotation.
  • the hose connection adapter 6 can thus be rotated by at most 180 degrees about its own axis. Turning the hose connection adapter 6 causes the open end of the whole, partially or not at all an air duct faces Thus, the entire air flow, only a portion of the air flow or no air flow is introduced into the air duct
  • FIG. 3 shows a further embodiment of the connection adapter according to the invention.
  • the hose connection adapter 6 is likewise of cylindrical design and the means for channeling the supply air flow 7 consists of a constriction piece growing in the interior of the cylindrical hose connection adapter 6 towards the interior of the mask.
  • This constrictor is in the picture triangular pointed from the inner walls of the adapter designed to taper towards the center. Thus, at most two-thirds of the air flow can be passed through the adapter.
  • the means for channeling the supply air stream 7 consists of a constriction piece growing in the interior of the cylindrical hose connection adapter 6 towards the interior of the mask. This embodiment passes the air flow past the constricting piece to the air ducts in the mask.
  • the adapter itself is preferably connected to an adjustment means 8, which is not located inside the adapter, the adjustment can be easily made by the wearer and changed at any time without much effort.
  • the air flow is now passed through the mask frame to the subsequent openings and transported the air there.
  • FIG. 4 shows several schematic drawings which illustrate possible ways of the air flow.
  • this drawing is shown in three figures in the order from top to bottom of the path of the air flow in the air supply ducts in the frame interior.
  • the air flow through the means for channeling the air flow 7 directs the air into the upper frame part, both upwards and downwards, into the lower frame part.
  • the figure does not show the outer cover of the frame.
  • FIG. 5 shows a possible embodiment of the openings in the frame.
  • the fan-assisted face shield system is designed such that the openings present in the frame are provided with means for air deflection 9a-9e.
  • These means of air deflection ensure a uniform flow of air into the interior of the mask. Air turbulence and one-sided ventilation are prevented.
  • the means for air deflection are arranged cascading growing. This allows complete and even air deflection.
  • the increasing height of the Lucasumlenkungsstoff, here there are curved against the air flow locks each carries parts of the air flow to the openings, but leaves the other part of the Air flow pass, which is then partially deflected by the following lock.
  • This steady stream of fresh air helps the wearer of the mask in his work.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne un système de masque facial pourvu d'une soufflante comprenant : un cadre (1) dont l'intérieur est creux et comprend un système de conduites et des ouvertures, ledit cadre comportant au moins un dispositif de réception (2) pouvant recevoir au moins un adaptateur de raccordement de tuyau ou un raccord de tuyau, une visière (4) qui est montée sur le cadre (1), et au moins un adaptateur de raccordement de tuyau qui peut être reçu par le dispositif de réception (2) et qui est configuré de manière qu'un flux d'air frais puisse être introduit dans des conduites spécifiques du système de conduites.
EP13805236.0A 2012-10-10 2013-10-09 Masque facial pourvu d'une soufflante Withdrawn EP2906303A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210019835 DE102012019835B4 (de) 2012-10-10 2012-10-10 Gebläseunterstütztes Gesichtsschild
PCT/DE2013/000576 WO2014056474A2 (fr) 2012-10-10 2013-10-09 Masque facial pourvu d'une soufflante

Publications (1)

Publication Number Publication Date
EP2906303A2 true EP2906303A2 (fr) 2015-08-19

Family

ID=49765221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13805236.0A Withdrawn EP2906303A2 (fr) 2012-10-10 2013-10-09 Masque facial pourvu d'une soufflante

Country Status (3)

Country Link
EP (1) EP2906303A2 (fr)
DE (1) DE102012019835B4 (fr)
WO (1) WO2014056474A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014019204B4 (de) * 2014-12-19 2018-05-17 Dräger Safety AG & Co. KGaA Kopfschutzvorrichtung und Atemschutzvorrichtung
DE102015012905B3 (de) * 2015-10-07 2017-01-26 Dräger Safety AG & Co. KGaA Anschlussadapter für eine Atemschutzmaske
GB2575050B (en) * 2018-06-26 2022-09-14 Draeger Safety Uk Ltd Connection apparatus for breathing apparatus
DE102020006288A1 (de) 2020-10-13 2022-04-14 Ulrich Frank Gesellschaft mit beschränkter Haftung Belüftungsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676236A (en) * 1983-09-09 1987-06-30 Gentex Corporation Helmet airflow system
FI87136C (fi) * 1990-06-01 1992-12-10 Kemira Oy Ansiktsskydd
EP3326697A1 (fr) * 2007-03-23 2018-05-30 3M Innovative Properties Company Appareil de régulation de flux de respirateur et procédé
PL2537560T3 (pl) * 2007-11-12 2019-09-30 3M Innovative Properties Company Zespół respiratora z regulacją kierunku przepływu powietrza

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014056474A2 *

Also Published As

Publication number Publication date
WO2014056474A3 (fr) 2014-11-13
DE102012019835B4 (de) 2015-01-22
WO2014056474A2 (fr) 2014-04-17
DE102012019835A1 (de) 2014-04-10

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