EP3011998B1 - Protective breathing mask, and method for testing same for leaks - Google Patents
Protective breathing mask, and method for testing same for leaks Download PDFInfo
- Publication number
- EP3011998B1 EP3011998B1 EP15186150.7A EP15186150A EP3011998B1 EP 3011998 B1 EP3011998 B1 EP 3011998B1 EP 15186150 A EP15186150 A EP 15186150A EP 3011998 B1 EP3011998 B1 EP 3011998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mask
- filter element
- protective breathing
- mask filter
- breathing mask
- 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.)
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Links
- 238000012360 testing method Methods 0.000 title claims description 63
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 15
- 230000001681 protective effect Effects 0.000 title claims 15
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000011016 integrity testing Methods 0.000 claims 5
- 238000005259 measurement Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 239000002985 plastic film Substances 0.000 description 23
- 229920006255 plastic film Polymers 0.000 description 23
- 238000007789 sealing Methods 0.000 description 20
- 239000003570 air Substances 0.000 description 18
- 238000001914 filtration Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000241 respiratory effect Effects 0.000 description 8
- -1 polypropylene Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
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- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- A62B18/02—Masks
- A62B18/025—Halfmasks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B27/00—Methods or devices for testing respiratory or breathing apparatus for high altitudes
Definitions
- the invention relates to a respiratory mask with a mask filter element, with an exhalation valve that can be inserted or inserted into the mask filter element and with at least one head attachment band attached to the mask filter element.
- Such a respirator is for example in the DE 20 2013 011 420 U1 described.
- the respirator which may be a particulate filtering disposable half-mask in particular, the Dichtsitzstage designed difficult and time consuming and costly.
- the mask wearer pulls on an additional hood to then check by means fed into the hood flavors or odors, whether the respirator fits properly.
- a quantitative fit test is even more complex.
- a test probe for sampling is placed in the patch respirator. The number of particles thus detected within the respirator is compared with a reference value detected outside in the ambient air.
- Such a complex fit test is often not carried out by the end user of the respirator itself.
- a test envelope is described by means of which a mask carrier of a filter half mask can itself test whether the mask forms a dense sealing line on the face.
- the airtight strig envelope is on the one hand provided with adhesive tape to be glued to the sealing edge of the mask can, and on the other provided with a slot which can be closed by squeezing the mask carrier. If the mask wearer applies the closing pressure by hand and inhales at the same time, the desired negative pressure develops in the mask, provided that the sealing line to the face and the test envelope are tight at the sealing edge.
- An object of the invention is to provide a respirator of the type described, which allows a comparison with the prior art improved fit test.
- the respirator of the invention is one in which the mask filter element is covered on its outside with an air-impermeable layer, and the air-impermeable layer is connected to the mask filter element so that at least a part of the air-impermeable layer is removable.
- the mask filter element consists in particular of a possibly also multi-layered filter material or comprises at least one such filter material. The latter causes the desired filtering of the inhaled air.
- the mask filter element can in particular have at least some inherent stability and / or a shell or cup shape.
- connection between the mask filter element and the air-impermeable layer which enables at least partial removal of the air-impermeable layer, is advantageously impermeable to air, at least substantially.
- this air-impermeable compound may be a permanently solid, preferably linear compound, wherein in the air-impermeable layer in addition a predetermined breaking line, such as a perforation or other material weakening, is present.
- the predetermined breaking line is preferred arranged adjacent to the actual permanently fixed (that is, insoluble) connection.
- the predetermined breaking line is preferably to be understood as part of this at least partial removal of the air-impermeable layer enabling connection.
- the air-impermeable connection may in particular also be a solid but detachable and preferably in turn linear connection, for example a releasable cohesive connection line, such as a detachable weld seam, or a releasable clamping connection.
- a releasable cohesive connection line such as a detachable weld seam
- a releasable clamping connection may in particular also be combined with each other. It is thus conceivable, for example, for a permanently fixed connection with an additional predetermined breaking line to be present between the mask filter element and the air-impermeable layer in a first region, and a detachable clamping connection in a second region. Other combinations are also possible.
- the respirator mask according to the invention may in particular be a particle-filtering half mask and / or a disposable mask.
- the air impermeable layer disposed on the outside of the mask filter element prevents air from escaping through the mask filter element from the mask interior or into the mask interior. If inhalation during which the exhalation valve is blocked detects that air enters the interior of the mask, this is an indication of a poorly seated mask edge. Then the mask seat can be corrected until inhaled no significant amount of air more enters the mask interior and builds there instead a negative pressure. Possibly. In particular, this test may also reveal that the mask wearer should advantageously use another respirator with a different mask size and / or a different mask edge shape.
- the outer air-impermeable layer is removed and the mask filter element exposed, so that the inhaled air is filtered during the actual mask use as usual through the mask filter element and enters the mask interior.
- the respirator mask according to the invention can thus be carried out in the respirator mask according to the invention in a simple manner and in particular also by the mask wearer himself.
- the functionality of the respirator during actual mask use is not affected by any elements needed for the fit test.
- the inhalation resistance of the respirator according to the invention does not increase despite the possibility of simple automatic fit test.
- the respirator according to the invention has a comparatively simple construction. In particular, it has only a single valve, namely the usual exhalation valve.
- a refinement is advantageous in which the air-impermeable layer is connected to the mask filter element at least in an edge region of the mask filter element by means of a detachable weld seam, in particular a detachable weld seam, preferably a detachable ultrasonic weld seam.
- a detachable weld seam in particular a detachable weld seam, preferably a detachable ultrasonic weld seam.
- the air-impermeable layer has at least one tearable perforation.
- the perforation is in particular a predetermined breaking point, along which the air-impermeable layer can be torn open. It allows for a substantial removal of the air-impermeable layer after completing the fit test.
- the air-impermeable layer is a film, in particular of a plastic, preferably of polypropylene (PP) or polyethylene (PE).
- PP polypropylene
- PE polyethylene
- the respirator comprises a particular separate Dichtsitzprüfread, which instead of the exhalation valve in a Ventilaus strictlyung having the mask filter element for receiving the exhalation valve, in particular temporarily and / or used as needed and there in particular mountable.
- the fit test unit allows a more accurate fit test. Since the Dichtsitzprüfread in the anyway for the exhalation valve in the mask filter element existing valve recess is used and / or mounted, so far no redesign of the respirator is necessary.
- the Dichtsitzprüfread comprises a scholarticianssockel and an actual measuring component
- the measuring component and the beauticianssockel are composable and surrounding the VentilausEnglishung recess edge of the mask filter element together with the air-impermeable layer in the assembled and assembled state of the Dichtsitziser between a mounting adapter of the measuring component and the Test unit socket is clamped.
- This sealing seat testing unit has a simple structure. It can be mounted without great effort in the mask filter element and also ensures due to the clamping in particular a substantially airtight transition to the air-impermeable layer.
- the clamping of the mask filter element and the air-impermeable layer between the mounting adapter and the strigticianssockel is in particular an air-impermeable and detachable connection, so that after loosening the mounting adapter from the fürticianssockel the air-impermeable layer in the region of the recess edge can be easily lifted or removed from the mask filter element.
- the mounting adapter of the measuring component and the vomticianssockel are screwed together. This facilitates the assembly.
- the force by means of which the measuring component and the test unit socket are held together and, in particular, the mask filter element and the air-impermeable layer can be clamped at the recess edge can thus be adjusted in a targeted and stepless manner.
- the measuring component comprises a measuring tube with a movably arranged in the interior, in particular spherical display element.
- the measuring component comprises an at least partially transparent measuring component wall, which in particular provides a view of the display ball.
- the measuring component is provided with a measuring scale. Both measures facilitate handling, especially the readability of the Dichtsitzprüfö.
- the measuring component comprises a measuring tube, one end of which tapers in cross-section and opens into an air opening.
- the taper retains a display element located in the measuring tube.
- the measuring tube designed in this way has a simple and functional design.
- Another object of the invention is to provide a comparison with the prior art improved method for sealing fitment of a respirator.
- a method for the tight fit testing of a respiratory mask according to the invention is specified in accordance with the features of claim 12.
- the respirator mask is first placed by placing the mask filter element on the face of a mask wearer and by means of of the head band is fixed to the head of the mask wearer. Then, upon inhalation of the mask wearer, it is checked whether a negative pressure is formed in a mask interior formed between the face of the mask wearer and the mask filter element. If, in the test, a particular sufficient negative pressure in the mask space has been found, the air-impermeable layer is at least partially removed.
- the air-impermeable layer attached to the mask filter element of the respiratory mask during the fit test enables the formation of a negative pressure in the mask interior, by means of which it is detected whether the respirator mask is tight. Removal of the air-impermeable layer at the end of a successful fit test allows for proper use of the respirator for proper filtering of the mask wearer's inhaled air.
- a refinement is advantageous in which the negative pressure forming in the mask interior is determined with the exhalation valve inserted into the mask filter element and by means of an incidence of the mask filter element. Then the fit test is particularly easy. It can be carried out in particular without the aid of further aids.
- the negative pressure forming in the mask interior is determined by means of a sealing seat testing unit inserted into the mask filter element and by means of a display readable on the sealing seat inspection unit. This allows the fit test to be carried out very accurately.
- the sealing seat testing unit is removed again and instead the exhalation valve is inserted into the mask filter element.
- the respirator is (again) in working order.
- Fig. 1 is an embodiment of a respirator 1 with a mask filter element 2 and four brackets 3, 4, 5 and 6 for two head attachment bands 7 and 8 for attachment of the respirator 1 shown on the head of a mask wearer.
- the mask filter element 2 is provided in the center with an exhalation valve 9.
- a nose clip 11 made of a metal material is provided, which is intended to adapt the nose region 10 to the nose part of the mask wearer.
- the brackets 3 to 6 are each designed as one-piece plastic components. They consist in the embodiment shown, for example, polypropylene (PP), polyethylene (PE), acrylonitrile-butadiene-styrene (ABS), or other suitable plastic material. They are firmly attached to the filter material of the mask filter element 2, welded in the embodiment shown.
- the respirator 1 is constructed essentially mirror-symmetrically with respect to a median plane 12.
- the brackets 3 to 6 are attached to the side facing away from this center plane 12, both lateral edges of the respirator 1. For this purpose, two lateral fastening projections 13 and 14 are provided on the mask filter element 2, to which the brackets 3 to 6 are welded.
- Each two of the brackets 3 to 6 serve to receive and fixing clamping one of the two head mounting straps 7 and 8.
- the brackets 3 and 4 take the head mounting strap 7, the brackets 5 and 6, the head mounting strap 8.
- the two head mounting straps 7 and 8 are elastic Bands with cut and in particular not further treated band ends 15 formed.
- the mask filter element 2 has a Körbchenfonn and at least substantially consists of an optionally multi-layered filter material.
- On the side facing away from the face of the mask wearer outside of the mask filter element 2 is an air-impermeable layer in the form of a plastic film 16, which consists in the embodiment of polypropylene, mounted on the actual mask filter element 2.
- the plastic film 16 is connected to an outer peripheral edge 17 of the mask filter element 2 and to a recess edge 18 of an existing in the mask filter element 2 central Ventilausnaturalung 19, in which the exhalation valve 9 is inserted with the filter material of the mask filter element 2 airtight and permanently fixed, in particular welded. From the exhalation valve 9 is in the illustration according to Fig.
- the plastic film 16 is provided with a perforation 23 running adjacent to the weld seam on the outer peripheral edge 17, with a perforation 24 running adjacent to the weld seam on the recess edge 18 and with a perforation 25 surrounding the nose clip 11.
- the Perforation 23, 24, 25 are particularly so fine that they allow no significant exchange of air or passage.
- the perforations 23, 24, 25 are predetermined breaking points or predetermined breaking lines along which the plastic film 16 can be torn or torn off.
- the nose clip 11 is placed on the plastic film 16 from the outside.
- the plastic film 16 can span the then directly on the filter material of the mask filter element 2 patch nose clip 11 outside.
- the perforation 25 is eliminated.
- the air-impermeable plastic film 16 is used by the mask wearer himself and without further aids in a simple manner feasible fit test.
- the mask wearer sets the respirator mask 1 (with the exhalation valve 9 fully assembled).
- the mask wearer checks whether a negative pressure builds up during inhalation inside the mask interior, so that the cup wall of the mask filter element 2 equipped with a certain mechanical flexibility is incident. If this is not the case, the mask wearer can improve the fit of the respiratory mask 1, for example by readjusting the head attachment straps 7, 8, or put on another substantially identical, but a different mask size and / or mask fit respirator to then repeat the fit test ,
- the air-impermeable plastic film 16 is no longer needed. It is largely removed by tearing along the perforations 23, 24, 25 in order then to use the tightly fitting according to the previously performed test respirator 1 without interference according to their actual intended purpose, namely for filtering the inhaled air by means of the mask filter element 2.
- the described fit test can be performed either separately for each individual respirator 1 and before its intended use or only occasionally, e.g. once per package, containing a variety of the same respirators 1.
- FIG. 2 another embodiment of a respirator 26 is shown with a likewise covered on its outer side by an air-impermeable layer in the form of a plastic film 27 made of polyethylene mask filter element 28.
- the picture according to Fig. 2 corresponds to the cross section II - II according to Fig. 1 , taking into account that the respirator 26 differs from the respirator 1 in some details.
- the respirator 26 has no nose clip 11.
- the plastic film 27 is disposed on the outside of the third layer 31.
- the respirator 26 includes fixed, but detachable connections.
- a detachable weld seam 32 exists as an air-impermeable connection between the mask filter element 28 and the plastic film 27.
- Fig. 4 still described in more detail airtight clamp connection available. Since these types of connection are thus each made detachable, the plastic film 27 has no perforations that allow the extensive removal of the plastic film 16 in the respirator 1. The plastic film 27 can be completely removed after successful fit testing of the respirator 26.
- the respirator 26 At the mask interior facing or at the voltage applied to the face of the mask wearer side of the outer peripheral edge 17, the respirator 26 has a sealing lip 33. Such a sealing lip is low, but still not mandatory. It improves the tight fit of the respirator 26 on the face of the mask wearer.
- the tight fit test of the respirator 26 can in principle be the same as described in connection with the respirator 1. However, it is also possible to use the further method for sealing fit testing described below.
- the Dichtsitzprüfread 34 comprises a measuring tube 35 which is screwed by means of a mounting adapter 36 on a scholarechssockel 37.
- the mounting adapter 36 and the fürikissockel 37 are equipped with corresponding mutually corresponding screw threads.
- the measuring tube 35 and the mounting adapter 36 are integrally connected to each other and designed as a common component, which represents the actual measuring component. Its measuring component wall is made partially transparent in the region of the measuring tube 35.
- the measuring tube 35 has in this area a viewing window 38, which releases the view of a located in the interior of the measuring tube 35 and a display element forming ball 39.
- the ball 39 is movable within the measuring tube 35.
- the outside of the measuring tube 35 is provided with a measuring scale 40.
- the end region of the measuring tube 35 facing away from the mounting adapter 36 comprises a cross-sectional tapering 41 and retaining the ball 39 opens into an air opening 42.
- the components of the sealing seat unit 34 are each made in particular of a plastic.
- the seal fit testing unit 34 is mounted on the mask filter element 28. Possibly.
- the exhalation valve 9 is dismantled beforehand.
- the test unit socket 37 is set from the inside into the valve recess 19 and passed through the valve recess 19 with its thread. This partially assembled state is in Fig. 4 shown.
- the actual measuring component is screwed onto the test unit socket 37 from outside by means of its mounting adapter 36.
- the mask filter element 28 and the plastic film 27 are clamped together in the region of the recess edge 18.
- the clamping force can be adjusted by the degree of screwing the mounting adapter 36 to the scholarticianssockel 37.
- the already mentioned releasable air-impermeable connection between the mask filter element 28 and the plastic film 27 results.
- the fit test is carried out similarly as described in connection with the respiratory mask 1.
- a measure of a proper fit of the respirator 26 is not the collapse of the mask filter element 28.
- a quantitative measure of the fit of the respirator 26 can be determined. If a negative pressure forms in the interior of the mask during inhalation, the ball 39 in the measuring tube 35 is raised. If the ball 39 reaches a certain predefinable height which can be read on the measuring scale 40, the respiratory mask 26 sits tightly.
- the sealing seat unit 34 is disassembled again, the air-impermeable plastic film 27 is removed by simply pulling off, and the exhalation valve 9 is mounted in the central valve recess 19 of the mask filter element 28.
- the respirator 28 may then be used to filter the inhaled air.
- the respirators 1 and 26 in a simple, yet very reliable manner to be performed by the mask wearer self-examination fit. This increases the safety for the mask wearer.
- the respirators 1 and 26 have a simple and therefore cost-effective design. Due to the removability of the impermeable plastic films 16 and 27 required for the tightness tests, the respirator masks 1 and 26, that is to say the filtering of the inhaled air during normal operation, result in no impairment. In particular, there is no undesirable increase in the inhalation resistance.
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Description
Die vorliegende Patentanmeldung nimmt die Priorität der deutschen Patentanmeldung
Die Erfindung betrifft eine Atemschutzmaske mit einem Maskenfilterelement, mit einem in das Maskenfilterelement einsetzbaren oder eingesetzten Ausatemventil sowie mit mindestens einem an dem Maskenfilterelement angebrachten Kopfbefestigungsband.The invention relates to a respiratory mask with a mask filter element, with an exhalation valve that can be inserted or inserted into the mask filter element and with at least one head attachment band attached to the mask filter element.
Eine derartige Atemschutzmaske ist beispielsweise in der
In der
In der
Eine Aufgabe der Erfindung besteht darin, eine Atemschutzmaske der eingangs bezeichneten Art anzugeben, die eine gegenüber dem Stand der Technik verbesserte Dichtsitzprüfung ermöglicht.An object of the invention is to provide a respirator of the type described, which allows a comparison with the prior art improved fit test.
Zur Lösung dieser Aufgabe wird eine Atemschutzmaske entsprechend den Merkmalen des Patentanspruchs 1 angegeben. Bei der erfindungsgemäßen Atemschutzmaske handelt es sich um eine solche, bei der das Maskenfilterelement an seiner Außenseite mit einer luftundurchlässigen Schicht bedeckt ist, und die luftundurchlässige Schicht so mit dem Maskenfilterelement verbunden ist, dass zumindest ein Teil der luftundurchlässigen Schicht entfernbar ist.To solve this problem, a respirator according to the features of claim 1 is given. The respirator of the invention is one in which the mask filter element is covered on its outside with an air-impermeable layer, and the air-impermeable layer is connected to the mask filter element so that at least a part of the air-impermeable layer is removable.
Es wurde erkannt, dass sich die Funktionalität einer Atemschutzmaske sowohl im Hinblick auf eine anfänglich durchzuführende Dichtsitzprüfung als auch im Hinblick auf den nach erfolgreicher Dichtsitzprüfung späteren bestimmungsgemäßen Gebrauch durch das Anbringen einer entfernbaren luftundurchlässige Schicht an der Außenseite des Maskenfilterelements, d.h. insbesondere an der vom Gesicht des Maskenträgers abgewandten Seite des Maskenfilterelements, erheblich verbessern lässt. Das Maskenfilterelement besteht insbesondere aus einem gegebenenfalls auch mehrlagigen Filtermaterial oder umfasst zumindest ein derartiges Filtermaterial. Letzteres bewirkt dabei die gewünschte Filterung der Einatemluft. Weiterhin kann das Maskenfilterelement insbesondere zumindest eine gewisse Eigenstabilität und/oder eine Schalen- oder Körbchenform aufweisen.It has been recognized that the functionality of a respirator, both in terms of initial fit testing and in terms of subsequent intended use following successful fit testing, is provided by the attachment of a removable air impermeable layer to the exterior of the mask filter element, i. especially on the side facing away from the face of the mask wearer side of the mask filter element, can significantly improve. The mask filter element consists in particular of a possibly also multi-layered filter material or comprises at least one such filter material. The latter causes the desired filtering of the inhaled air. Furthermore, the mask filter element can in particular have at least some inherent stability and / or a shell or cup shape.
Die Verbindung zwischen dem Maskenfilterelement und der luftundurchlässigen Schicht, die ein zumindest teilweises Entfernen der luftundurchlässigen Schicht ermöglicht, ist vorteilhafterweise luftundurchlässig, jedenfalls zumindest im Wesentlichen. Insbesondere kann es sich bei dieser luftundurchlässigen Verbindung um eine dauerhaft feste, vorzugsweise linienförmige Verbindung handeln, wobei in der luftundurchlässigen Schicht zusätzlich eine Sollbruchlinie, wie z.B. eine Perforierung oder eine andere Materialschwächung, vorhanden ist. Dabei ist die Sollbruchlinie bevorzugt benachbart zu der eigentlichen dauerhaft festen (also unlösbaren) Verbindung angeordnet. Die Sollbruchlinie ist bevorzugt als Bestandteil dieser ein zumindest teilweises Entfernen der luftundurchlässigen Schicht ermöglichenden Verbindung zu verstehen. Alternativ kann es sich bei der luftundurchlässigen Verbindung insbesondere auch um eine feste, aber lösbare sowie vorzugsweise wiederum linienförmige Verbindung handeln, beispielsweise um eine lösbare stoffschlüssige Verbindungslinie, wie z.B. um eine lösbare Schweißnaht, oder um eine lösbare Klemmverbindung. Die vorstehend erwähnten verschiedenen Verbindungstypen können insbesondere auch miteinander kombiniert werden. So ist es z.B. denkbar, dass zwischen dem Maskenfilterelement und der luftundurchlässigen Schicht in einem ersten Bereich eine dauerhaft feste Verbindung mit zusätzlicher Sollbruchlinie und in einem zweiten Bereich eine lösbare Klemmverbindung vorhanden ist. Andere Kombinationen sind ebenfalls möglich.The connection between the mask filter element and the air-impermeable layer, which enables at least partial removal of the air-impermeable layer, is advantageously impermeable to air, at least substantially. In particular, this air-impermeable compound may be a permanently solid, preferably linear compound, wherein in the air-impermeable layer in addition a predetermined breaking line, such as a perforation or other material weakening, is present. The predetermined breaking line is preferred arranged adjacent to the actual permanently fixed (that is, insoluble) connection. The predetermined breaking line is preferably to be understood as part of this at least partial removal of the air-impermeable layer enabling connection. Alternatively, the air-impermeable connection may in particular also be a solid but detachable and preferably in turn linear connection, for example a releasable cohesive connection line, such as a detachable weld seam, or a releasable clamping connection. The above-mentioned various types of compounds may in particular also be combined with each other. It is thus conceivable, for example, for a permanently fixed connection with an additional predetermined breaking line to be present between the mask filter element and the air-impermeable layer in a first region, and a detachable clamping connection in a second region. Other combinations are also possible.
Bei der erfindungsgemäßen Atemschutzmaske kann es sich insbesondere um eine Partikel filtrierende Halbmaske und/oder um eine Einwegmaske handeln.The respirator mask according to the invention may in particular be a particle-filtering half mask and / or a disposable mask.
Während der anfänglichen Dichtsitzprüfung verhindert die außen auf dem Maskenfilterelement angeordnete luftundurchlässige Schicht, dass Luft durch das Maskenfilterelement aus dem Maskeninnenraum entweicht oder in den Maskeninnenraum gelangt. Wird beim Einatmen, während dessen das Ausatemventil gesperrt ist, festgestellt, dass Luft in den Maskeninnenraum gelangt, ist dies ein Hinweis auf einen schlecht am Gesicht sitzenden Maskenrand. Dann kann der Maskensitz solange korrigiert werden, bis beim Einatmen keine nennenswerte Luftmenge mehr in den Maskeninnenraum gelangt und sich dort stattdessen ein Unterdruck aufbaut. Ggf. kann sich bei diesem Test insbesondere auch herausstellen, dass der Maskenträger vorteilhafterweise eine andere Atemschutzmaske mit einer anderen Maskengröße und/oder einer anderen Maskenrandform verwenden sollte.During the initial sealing fit test, the air impermeable layer disposed on the outside of the mask filter element prevents air from escaping through the mask filter element from the mask interior or into the mask interior. If inhalation during which the exhalation valve is blocked detects that air enters the interior of the mask, this is an indication of a poorly seated mask edge. Then the mask seat can be corrected until inhaled no significant amount of air more enters the mask interior and builds there instead a negative pressure. Possibly. In particular, this test may also reveal that the mask wearer should advantageously use another respirator with a different mask size and / or a different mask edge shape.
Nach erfolgreicher Dichtsitzprüfung wird die äußere luftundurchlässige Schicht entfernt und das Maskenfilterelement freigelegt, so dass die Einatemluft während des eigentlichen Maskengebrauchs wie üblich durch das Maskenfilterelement gefiltert wird und in den Maskeninnenraum gelangt.After a successful fit test, the outer air-impermeable layer is removed and the mask filter element exposed, so that the inhaled air is filtered during the actual mask use as usual through the mask filter element and enters the mask interior.
Diese Dichtsitzprüfung lässt sich bei der erfindungsgemäßen Atemschutzmaske also in einfacher Weise und insbesondere auch vom Maskenträger selbst durchführen. Andererseits ist die Funktionalität der Atemschutzmaske während des eigentlichen Maskengebrauchs nicht durch irgendwelche für die Dichtsitzprüfung benötigten Elemente beeinträchtigt. Insbesondere erhöht sich der Einatemwiderstand der erfindungsgemäßen Atemschutzmaske trotz der Möglichkeit zur einfachen selbsttätigen Dichtsitzprüfung nicht. Weiterhin hat die erfindungsgemäße Atemschutzmaske einen vergleichsweise einfachen Aufbau. Sie hat insbesondere nur ein einziges Ventil, nämlich das übliche Ausatemventil.This fit test can thus be carried out in the respirator mask according to the invention in a simple manner and in particular also by the mask wearer himself. On the other hand, the functionality of the respirator during actual mask use is not affected by any elements needed for the fit test. In particular, the inhalation resistance of the respirator according to the invention does not increase despite the possibility of simple automatic fit test. Furthermore, the respirator according to the invention has a comparatively simple construction. In particular, it has only a single valve, namely the usual exhalation valve.
Vorteilhafte Ausgestaltungen der erfindungsgemäßen Atemschutzmaske ergeben sich aus den Merkmalen der von Anspruch 1 abhängigen Ansprüche.Advantageous embodiments of the respiratory mask according to the invention will become apparent from the features of the dependent claims of claim 1.
Günstig ist eine Ausgestaltung, bei der die luftundurchlässige Schicht zumindest in einem Randbereich des Maskenfilterelements mittels einer lösbaren Schweißnaht, insbesondere einer lösbaren Schweißnaht, vorzugsweise einer lösbaren Ultraschallschweißnaht, mit dem Maskenfilterelement verbunden ist. So kann auf einfacher Weise eine für die Zwecke der Dichtsitzprüfung ausreichend feste und luftdichte, aber dennoch lösbare Anbringung der luftundurchlässigen Schicht an dem Maskenfilterelement erreicht werden. Bei dieser Ausgestaltung ist die luftundurchlässige Schicht nach Abschluss der Dichtsitzprüfung vorzugsweise komplett entfernbar. Wenn das Maskenfilterelement einen mehrlagigen Aufbau hat, ist außerdem oftmals im Randbereich des Maskenfilterelements ohnehin eine Schweißnaht vorgesehen, um die Filterelementlagen miteinander zu verbinden. In diesem Fall ist für die Anbringung der luftundurchlässigen Schicht keine gesonderte Schweißnaht erforderlich.A refinement is advantageous in which the air-impermeable layer is connected to the mask filter element at least in an edge region of the mask filter element by means of a detachable weld seam, in particular a detachable weld seam, preferably a detachable ultrasonic weld seam. Thus, in a simple manner for the purposes of the fit test sufficiently strong and airtight, but still releasable attachment the air-impermeable layer can be achieved on the mask filter element. In this embodiment, the airtight layer is preferably completely removable after completion of the fit test. In addition, if the mask filter element has a multi-layer structure, a weld seam is often provided in the edge region of the mask filter element in order to connect the filter element layers to one another. In this case, no separate weld is required for the attachment of the air-impermeable layer.
Gemäß einer weiteren günstigen Ausgestaltung weist die luftundurchlässige Schicht mindestens eine aufreißbare Perforierung auf. Die Perforierung stellt insbesondere eine Sollbruchstelle dar, längs der die luftundurchlässige Schicht aufgerissen werden kann. Sie gestattet ein weitgehendes Entfernen der luftundurchlässigen Schicht nach Abschluss der Dichtsitzprüfung.According to a further advantageous embodiment, the air-impermeable layer has at least one tearable perforation. The perforation is in particular a predetermined breaking point, along which the air-impermeable layer can be torn open. It allows for a substantial removal of the air-impermeable layer after completing the fit test.
Gemäß einer weiteren günstigen Ausgestaltung ist die luftundurchlässige Schicht eine Folie, insbesondere aus einem Kunststoff, vorzugsweise aus Polypropylen (PP) oder Polyethylen (PE). Derartige Folien sind weit verbreitet und günstig in der Anschaffung. Außerdem verfügen sie über die für die Dichtsitzprüfung benötigte Eigenschaft der Luftundurchlässigkeit.According to a further advantageous embodiment, the air-impermeable layer is a film, in particular of a plastic, preferably of polypropylene (PP) or polyethylene (PE). Such films are widely used and inexpensive to buy. They also have the air impermeability property required for the fit test.
Gemäß einer weiteren günstigen Ausgestaltung umfasst die Atemschutzmaske eine insbesondere gesonderte Dichtsitzprüfeinheit, die anstelle des Ausatemventils in eine Ventilausnehmung, die das Maskenfilterelement zur Aufnahme des Ausatemventils aufweist, insbesondere zeitweise und/oder bei Bedarf einsetzbar und dort insbesondere montierbar ist. Die Dichtsitzprüfeinheit ermöglicht eine genauere Dichtsitzprüfung. Da die Dichtsitzprüfeinheit in der ohnehin für das Ausatemventil im Maskenfilterelement vorhandenen Ventilausnehmung eingesetzt und/oder montiert wird, ist insofern keine Umkonstruktion der Atemschutzmaske notwendig.According to a further advantageous embodiment, the respirator comprises a particular separate Dichtsitzprüfeinheit, which instead of the exhalation valve in a Ventilausnehmung having the mask filter element for receiving the exhalation valve, in particular temporarily and / or used as needed and there in particular mountable. The fit test unit allows a more accurate fit test. Since the Dichtsitzprüfeinheit in the anyway for the exhalation valve in the mask filter element existing valve recess is used and / or mounted, so far no redesign of the respirator is necessary.
Gemäß einer weiteren günstigen Ausgestaltung umfasst die Dichtsitzprüfeinheit einen Prüfeinheitssockel und eine eigentliche Messkomponente, wobei die Messkomponente und der Prüfeinheitssockel zusammensetzbar sind und ein die Ventilausnehmung umgebender Ausnehmungsrand des Maskenfilterelements zusammen mit der luftundurchlässigen Schicht im montierten und zusammengesetzten Zustand der Dichtsitzeinheit zwischen einem Montageadapter der Messkomponente und dem Prüfeinheitssockel eingeklemmt ist. Diese Dichtsitzprüfeinheit hat einen einfachen Aufbau. Sie lässt sich ohne großen Aufwand im Maskenfilterelement montieren und gewährleistet außerdem aufgrund der Klemmung insbesondere einen im Wesentlichen luftdichten Übergang zu der luftundurchlässigen Schicht. Die Klemmung des Maskenfilterelements und der luftundurchlässigen Schicht zwischen dem Montageadapter und dem Prüfeinheitssockel ist insbesondere eine luftundurchlässige und lösbare Verbindung, so dass nach einem Lösen des Montageadapters von dem Prüfeinheitssockel die luftundurchlässige Schicht im Bereich des Ausnehmungsrands einfach von dem Maskenfilterelement abgehoben oder abgezogen werden kann.According to a further advantageous embodiment, the Dichtsitzprüfeinheit comprises a Prüfeinheitssockel and an actual measuring component, the measuring component and the Prüfeinheitssockel are composable and surrounding the Ventilausnehmung recess edge of the mask filter element together with the air-impermeable layer in the assembled and assembled state of the Dichtsitzeinheit between a mounting adapter of the measuring component and the Test unit socket is clamped. This sealing seat testing unit has a simple structure. It can be mounted without great effort in the mask filter element and also ensures due to the clamping in particular a substantially airtight transition to the air-impermeable layer. The clamping of the mask filter element and the air-impermeable layer between the mounting adapter and the Prüfeinheitssockel is in particular an air-impermeable and detachable connection, so that after loosening the mounting adapter from the Prüfeinheitssockel the air-impermeable layer in the region of the recess edge can be easily lifted or removed from the mask filter element.
Gemäß einer weiteren günstigen Ausgestaltung sind der Montageadapter der Messkomponente und der Prüfeinheitssockel miteinander verschraubbar. Dies erleichtert die Montage. Außerdem kann so die Kraft, mittels derer die Messkomponente und der Prüfeinheitssockel zusammengehalten sowie insbesondere das Maskenfilterelement und die luftundurchlässige Schicht am Ausnehmungsrand eingeklemmt werden, gezielt und stufenlos eingestellt werden.According to a further advantageous embodiment of the mounting adapter of the measuring component and the Prüfeinheitssockel are screwed together. This facilitates the assembly. In addition, the force by means of which the measuring component and the test unit socket are held together and, in particular, the mask filter element and the air-impermeable layer can be clamped at the recess edge can thus be adjusted in a targeted and stepless manner.
Gemäß einer weiteren günstigen Ausgestaltung umfasst die Messkomponente ein Messrohr mit einem im Innenraum beweglich angeordneten insbesondere kugelförmigen Anzeigeelement. Dies ist ein einfacher Aufbau, der eine quantifizierte und/oder vergleichbare Aussage bezüglich des während der Dichtsitzprüfung im Maskeninnenraum herrschenden Unterdrucks ermöglicht.According to a further advantageous embodiment, the measuring component comprises a measuring tube with a movably arranged in the interior, in particular spherical display element. This is a simple construction that allows a quantified and / or comparable statement regarding the negative pressure prevailing during the fit test in the mask interior.
Gemäß einer weiteren günstigen Ausgestaltung umfasst die Messkomponente eine zumindest teilweise durchsichtige und insbesondere den Blick auf die Anzeigekugel freigebende Messkomponentenwand. Gemäß einer weiteren günstigen Ausgestaltung ist die Messkomponente mit einer Messskala versehen. Beide Maßnahmen erleichtern die Handhabung, insbesondere die Ablesbarkeit, der Dichtsitzprüfeinheit.According to a further advantageous embodiment, the measuring component comprises an at least partially transparent measuring component wall, which in particular provides a view of the display ball. According to a further advantageous embodiment, the measuring component is provided with a measuring scale. Both measures facilitate handling, especially the readability of the Dichtsitzprüfeinheit.
Gemäß einer weiteren günstigen Ausgestaltung umfasst die Messkomponente ein Messrohr, dessen eines Ende sich im Querschnitt verjüngt und in eine Luftöffnung mündet. Die Verjüngung hält insbesondere ein im Messrohr befindliches Anzeigelement zurück. Das so ausgestaltete Messrohr hat einen einfachen und zugleich funktionsgerechten Aufbau.According to a further advantageous embodiment, the measuring component comprises a measuring tube, one end of which tapers in cross-section and opens into an air opening. In particular, the taper retains a display element located in the measuring tube. The measuring tube designed in this way has a simple and functional design.
Eine weitere Aufgabe der Erfindung besteht darin, ein gegenüber dem Stand der Technik verbessertes Verfahren zur Dichtsitzprüfung einer Atemschutzmaske anzugeben.Another object of the invention is to provide a comparison with the prior art improved method for sealing fitment of a respirator.
Zur Lösung der das Verfahren betreffenden Aufgabe wird ein Verfahren zur Dichtsitzprüfung einer erfindungsgemäßen Atemschutzmaske entsprechend den Merkmalen des Anspruchs 12 angegeben. Bei dem erfindungsgemäßen Verfahren wird die Atemschutzmaske zunächst aufgesetzt, indem das Maskenfilterelement am Gesicht eines Maskenträgers platziert und mittels des Kopfbefestigungsbands am Kopf des Maskenträgers fixiert wird. Dann wird beim Einatmen des Maskenträgers geprüft, ob in einem zwischen dem Gesicht des Maskenträgers und dem Maskenfilterelement gebildeten Maskeninnenraum ein Unterdruck gebildet wird. Wenn bei der Prüfung ein insbesondere ausreichender Unterdruck im Maskenimenraum festgestellt worden ist, wird die luftundurchlässige Schicht zumindest teilweise entfernt.In order to solve the problem relating to the method, a method for the tight fit testing of a respiratory mask according to the invention is specified in accordance with the features of
Das erfindungsgemäße Verfahren und seine Ausgestaltungen bieten Vorteile, die zumindest zum Teil bereits im Zusammenhang mit der erfindungsgemäßen Atemschutzmaske und deren Ausgestaltungen beschrieben worden sind. So ermöglicht die am Maskenfilterelement der Atemschutzmaske angebrachte luftundurchlässige Schicht während der Dichtsitzprüfung die Ausbildung eines Unterdrucks im Maskeninnenraum, anhand dessen erkannt wird, ob die Atemschutzmaske dicht sitzt. Das Entfernen der luftundurchlässigen Schicht am Ende einer erfolgreichen Dichtsitzprüfung ermöglicht eine beeinträchtigungsfreie bestimmungsgemäße Verwendung der Atemschutzmaske zum Filtern der Einatemluft des Maskenträgers.The method according to the invention and its embodiments offer advantages which have at least in part already been described in connection with the respiratory mask according to the invention and its embodiments. Thus, the air-impermeable layer attached to the mask filter element of the respiratory mask during the fit test enables the formation of a negative pressure in the mask interior, by means of which it is detected whether the respirator mask is tight. Removal of the air-impermeable layer at the end of a successful fit test allows for proper use of the respirator for proper filtering of the mask wearer's inhaled air.
Vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens ergeben sich aus den Merkmalen der von Anspruch 12 abhängigen Ansprüche.Advantageous embodiments of the method according to the invention emerge from the features of the claims dependent on
Günstig ist eine Ausgestaltung, bei der der sich im Maskeninnenraum bildende Unterdruck bei in das Maskenfilterelement eingesetztem Ausatemventil und anhand eines Einfallens des Maskenfilterelements ermittelt wird. Dann ist die Dichtsitzprüfung besonders einfach. Sie kann insbesondere ohne Zuhilfenahme weiterer Hilfsmittel durchgeführt werden.A refinement is advantageous in which the negative pressure forming in the mask interior is determined with the exhalation valve inserted into the mask filter element and by means of an incidence of the mask filter element. Then the fit test is particularly easy. It can be carried out in particular without the aid of further aids.
Gemäß einer weiteren günstigen Ausgestaltung wird der sich im Maskeninnenraum bildende Unterdruck bei in das Maskenfilterelement eingesetzter Dichtsitzprüfeinheit und mittels einer an der Dichtsitzprüfeinheit ablesbaren Anzeige ermittelt. Dadurch kann die Dichtsitzprüfung sehr genau durchgeführt werden.According to a further advantageous embodiment, the negative pressure forming in the mask interior is determined by means of a sealing seat testing unit inserted into the mask filter element and by means of a display readable on the sealing seat inspection unit. This allows the fit test to be carried out very accurately.
Gemäß einer weiteren günstigen Ausgestaltung wird nach der Ermittlung des Unterdrucks im Maskeninnenraum die Dichtsitzprüfeinheit wieder entfernt und stattdessen das Ausatemventil in das Maskenfilterelement eingesetzt. Damit ist die Atemschutzmaske (wieder) in betriebsbereitem Zustand.According to a further favorable embodiment, after the determination of the negative pressure in the mask interior, the sealing seat testing unit is removed again and instead the exhalation valve is inserted into the mask filter element. Thus, the respirator is (again) in working order.
Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Es zeigt:
- Fig. 1
- ein Ausführungsbeispiel einer Atemschutzmaske mit einem außen mittels einer luftundurchlässigen Kunststofffolie bedeckten Maskenfilterelement sowie mit teilmontiertem Ausatemventil in einer Draufsicht von außen,
- Fig. 2
- ein weiteres Ausführungsbeispiel einer Atemschutzmaske mit einem außen mittels einer luftundurchlässigen Kunststofffolie bedeckten Maskenfilterelement sowie mit teilmontieutem Ausatemventil in einer Querschnittsdarstellung,
- Fig. 3
- ein Ausführungsbeispiel einer Dichtsitzprüfeinheit zur Prüfung des Sitzes einer der Atemschutzmasken gemäß
Fig. 1 und2 und - Fig. 4
- die Atemschutzmaske gemäß
Fig. 2 mit teilmontierter Dichtsitzprüfeinheit gemäßFig. 3 .
- Fig. 1
- an embodiment of a respirator mask with a masking element covered externally by means of an air-impermeable plastic film and with a partially mounted exhalation valve in a plan view from the outside,
- Fig. 2
- a further embodiment of a respirator mask with a mask filter element covered on the outside by means of an air-impermeable plastic film and with a partially-assembled exhalation valve in a cross-sectional representation,
- Fig. 3
- an embodiment of a Dichtsitzprüfeinheit for testing the fit of one of the respirators according to
Fig. 1 and2 and - Fig. 4
- the respirator according to
Fig. 2 with partially assembled sealing seat testing unit according toFig. 3 ,
Einander entsprechende Teile sind in den
In
Die Halterungen 3 bis 6 sind jeweils als einstückige Kunststoffbauteile ausgestaltet. Sie bestehen bei dem gezeigten Ausführungsbeispiel z.B. aus Polypropylen (PP), Polyethylen (PE), Acrylnitril-Butadien-Styrol (ABS), oder einem anderen geeigneten Kunststoffmaterial. Sie sind fest an dem Filtermaterial des Maskenfilterelements 2 angebracht, beim gezeigten Ausführungsbeispiel angeschweißt. Die Atemschutzmaske 1 ist im Wesentlichen spiegelsymmetrisch bezüglich einer Mittelebene 12 aufgebaut. Die Halterungen 3 bis 6 sind an den von dieser Mittelebene 12 abgewandten beiden seitlichen Rändern der Atemschutzmaske 1 angebracht. Hierzu sind am Maskenfilterelement 2 jeweils zwei seitliche Befestigungsvorsprünge 13 und 14 vorgesehen, an denen die Halterungen 3 bis 6 angeschweißt sind.The
Jeweils zwei der Halterungen 3 bis 6 dienen zur Aufnahme und fixierenden Klemmung eines der beiden Kopfbefestigungsbänder 7 und 8. Die Halterungen 3 und 4 nehmen das Kopfbefestigungsband 7 auf, die Halterungen 5 und 6 das Kopfbefestigungsband 8. Die beiden Kopfbefestigungsbändern 7 und 8 sind als elastische Bänder mit abgeschnittenen und insbesondere nicht weiter behandelten Bandenden 15 ausgebildet.Each two of the
Das Maskenfilterelement 2 hat eine Körbchenfonn und besteht zumindest zu wesentlichen Teilen aus einem gegebenenfalls auch mehrlagigen Filtermaterial. Auf der von dem Gesicht des Maskenträgers abgewandten Außenseite des Maskenfilterelements 2 ist eine luftundurchlässige Schicht in Gestalt einer Kunststofffolie 16, die bei dem Ausführungsbeispiel aus Polypropylen besteht, auf dem eigentlichen Maskenfilterelement 2 angebracht. Die Kunststofffolie 16 ist dazu an einem Außenumfangsrand 17 des Maskenfilterelements 2 sowie an einem Ausnehmungsrand 18 einer im Maskenfilterelement 2 vorhandenen zentralen Ventilausnehmung 19, in die das Ausatemventil 9 eingesetzt ist, mit dem Filtermaterial des Maskenfilterelements 2 luftundurchlässig und dauerhaft fest verbunden, insbesondere verschweißt. Von dem Ausatemventil 9 ist in der Darstellung gemäß
Die Kunststofffolie 16 ist mit einer benachbart zur Schweißnaht am Außenumfangsrand 17 verlaufenden Perforierung 23, mit einer benachbart zur Schweißnaht am Ausnehmungsrand 18 verlaufenden Perforierung 24 und mit einer den Nasenclip 11 umgebenden Perforierung 25 versehen. Die Perforierung 23, 24, 25 sind dabei insbesondere so fein, dass sie keinen nennenswerten Luftaustausch oder -durchtritt gestatten. Die Perforierungen 23, 24, 25 sind Sollbruchstellen bzw. Sollbruchlinien, längs derer die Kunststofffolie 16 auf- oder abgerissen werden kann.The
Bei dem in
Im Folgenden wird die Funktionsweise der Atemschutzmaske 1 und insbesondere die der luftundurchlässigen Kunststofffolie 16 beschrieben.In the following, the operation of the respirator 1 and in particular the air-
Die luftundurchlässige Kunststofffolie 16 dient zur vom Maskenträger selbst und ohne weitere Hilfsmittel in einfacher Weise durchführbaren Dichtsitzprüfung. Dazu setzt der Maskenträger die Atemschutzmaske 1 (mit vollständig montiertem Ausatemventil 9) auf. Der Maskenträger prüft dann, ob sich beim Einatmen ein Unterdruck innerhalb des Maskeninnenraums aufbaut, so dass die mit einer gewissen mechanischen Flexibilität ausgestattete Körbchenwand des Maskenfilterelements 2 einfällt. Ist dies nicht der Fall, kann der Maskenträger den Sitz der Atemschutzmaske 1, z.B. durch Nachjustieren der Kopfbefestigungsbänder 7, 8, verbessern oder eine andere im Wesentlichen baugleiche, aber eine andere Maskengröße und/oder Maskenpassform aufweisende Atemschutzmaske aufsetzen, um danach die Dichtsitzprüfung zu wiederholen.The air-
Sobald die Atemschutzmaske 1 ordnungsgemäß sitzt, kann beim Einatmen weder über das mit der luftundurchlässigen Kunststofffolie 16 abgedeckte Maskenfilterelement 2, noch über das beim Einatmen gesperrte Ausatemventil 9, noch über den dann dicht am Gesicht des Maskenträgers anliegenden Außenumfangsrand 17 Umgebungsluft von außen in den Maskeninnenraum gelangen, so dass sich dort ein Unterdruck einstellt und das Maskenfilterelement 2 einfällt.As soon as the respirator 1 is properly seated, ambient air can not enter the mask interior from the outside via the
Danach wird die luftundurchlässige Kunststofffolie 16 nicht mehr benötigt. Sie wird größten Teils durch Abreißen längs der Perforierungen 23, 24, 25 entfernt, um die gemäß der vorher durchgeführten Prüfung dicht sitzende Atemschutzmaske 1 dann beeinträchtigungsfrei entsprechend ihrem eigentlichen Bestimmungszweck, nämlich zum Filtern der Einatemluft mittels des Maskenfilterelements 2, verwenden zu können.Thereafter, the air-
Die beschriebene Dichtsitzprüfung kann entweder für jede einzelne Atemschutzmaske 1 gesondert und vor deren bestimmungsgemäßer Verwendung durchgeführt werden oder aber nur ab und zu, z.B. einmal pro Packungsgebinde, das eine Vielzahl gleicher Atemschutzmasken 1 enthält.The described fit test can be performed either separately for each individual respirator 1 and before its intended use or only occasionally, e.g. once per package, containing a variety of the same respirators 1.
In
Die Abbildung gemäß
Ein weiterer Unterschied zur Atemschutzmaske 1 besteht in der Verbindung des Maskenfilterelements 28 mit der Kunststofffolie 27. Anstelle der bei der Atemschutzmaske 1 hierzu vorgesehenen dauerhaft festen Schweißnähte umfasst die Atemschutzmaske 26 feste, aber lösbare Verbindungen. So ist am Außenumfangsrand 17 eine lösbare Schweißnaht 32 als luftundurchlässige Verbindung zwischen dem Maskenfilterelement 28 und der Kunststofffolie 27 vorhanden. Am Ausnehmungsrand 18 der zentralen Ventilausnehmung 19 ist eine nachfolgend im Zusammenhang mit
An der dem Maskeninnenraum zugewandten bzw. an der am Gesicht des Maskenträgers anliegenden Seite des Außenumfangsrands 17 hat die Atemschutzmaske 26 eine Dichtlippe 33. Eine derartige Dichtlippe ist günstig, aber trotzdem nicht zwingend erforderlich. Sie verbessert den dichten Sitz der Atemschutzmaske 26 am Gesicht des Maskenträgers.At the mask interior facing or at the voltage applied to the face of the mask wearer side of the outer
Die Dichtsitzprüfung der Atemschutzmaske 26 kann grundsätzlich genauso, wie im Zusammenhang mit der Atemschutzmaske 1 beschrieben, erfolgen. Es ist aber auch die im Folgenden beschriebene weitere Methode zur Dichtsitzprüfung möglich.The tight fit test of the
Während bei der vorstehend beschriebenen Methode kein zusätzliches Hilfsmittel benötigt wird, kommt bei der weiteren, hier beispielhaft anhand der Atemschutzmaske 26 erläuterten Methode eine zusätzliche Dichtsitzprüfeinheit 34 zum Einsatz. Diese in
Wie aus der Abbildung gemäß
Um mit der Atemschutzmaske 26 eine Dichtsitzprüfung durchzuführen, wird zunächst die Dichtsitzprüfeinheit 34 an dem Maskenfilterelement 28 montiert. Ggf. wird dazu vorher das Ausatemventil 9 demontiert. Zur Montage der Dichtsitzprüfeinheit 34 wird der Prüfeinheitssockel 37 von innen in die Ventilausnehmung 19 gesetzt und mit seinem Gewindegang durch die Ventilausnehmung 19 hindurchgeführt. Dieser teilmontierte Zustand ist in
Nach der Montage der Dichtsitzprüfeinheit 34 erfolgt die Dichtsitzprüfung ähnlich wie im Zusammenhang mit der Atemschutzmaske 1 beschrieben. Als Maß für einen ordnungsgemäßen Sitz der Atemschutzmaske 26 dient allerdings nicht das Einfallen des Maskenfilterelements 28. Stattdessen kann dank der Messskala 40 der Dichtsitzprüfeinheit 34 ein quantitatives Maß für den Sitz der Atemschutzmaske 26 ermittelt werden. Bildet sich beim Einatmen im Maskeninnenraum ein Unterdruck, wird die Kugel 39 im Messrohr 35 angehoben. Erreicht die Kugel 39 eine bestimmte vorgebbare und an der Messskala 40 ablesbare Höhe, sitzt die Atemschutzmaske 26 dicht. Wenn ein derartiger Zustand gegeben und erkannt worden ist, wird die Dichtsitzeinheit 34 wieder demontiert, die luftundurchlässige Kunststofffolie 27 durch einfaches Abziehen entfernt, und das Ausatemventil 9 in der zentralen Ventilausnehmung 19 des Maskenfilterelements 28 montiert. Die Atemschutzmaske 28 kann danach zum Filtern der Einatemluft verwendet werden.After assembly of the sealing
Die anhand der Atemschutzmaske 26 gemäß
Jedenfalls ermöglichen die Atemschutzmasken 1 und 26 in einfacher und trotzdem sehr zuverlässiger Weise eine vom Maskenträger selbst durchzuführende Dichtsitzprüfung. Dies erhöht die Sicherheit für den Maskenträger. Zugleich haben die Atemschutzmasken 1 und 26 einen einfachen und damit kostengünstigen Aufbau. Aufgrund der Entfernbarkeit der für die Dichtsitzprüfungen benötigten luftundurchlässigen Kunststofffolien 16 und 27 resultiert im Normalbetrieb der Atemschutzmasken 1 und 26, also beim Filtern der Einatemluft, keine Beeinträchtigung. Insbesondere kommt es zu keiner unerwünschten Erhöhung des Einatemwiderstands.In any case, allow the
Claims (15)
- Protective breathing mask comprising a mask filter element (2; 28), with an exhalation valve (9) which can be inserted or is inserted into the mask filter element (2; 28) and with at least one head fastening band (7, 8) attached onto the mask filter element (2; 28), whereina) the mask filter element (2; 28) is covered on its outside with an airtight layer (16; 27) andb) the airtight layer (16; 27) is connected to the mask filter element (2; 28) so that at least a portion of the airtight layer (16; 27) can be removed.
- Protective breathing mask according to claim 1, characterised in that the airtight layer (27) is joined to the mask filter element (28) at least in an edge area (17) of the mask filter element (28) by means of a detachable welding seam (32).
- Protective breathing mask according to claim 1 or 2, characterised in that the airtight layer (16) comprises at least one tearable perforation (23, 24, 25).
- Protective breathing mask according to any of the preceding claims, characterised in that the airtight layer is a film (16; 27), in particular made of plastic.
- Protective breathing mask according to any of the preceding claims, characterised in that the protective breathing mask comprises a seal-integrity testing unit (34), which can be inserted in place of the exhalation valve (9) into a valve recess (19), which the mask filter element (2; 28) comprises for receiving the exhalation valve (9).
- Protective breathing mask according to claim 5, characterised in that the seal-integrity testing unit (34) comprises a testing unit base (37) and an actual measuring component, wherein the measuring component and the testing unit base (37) can be assembled together and a recess edge (18) of the mask filter element (2; 28) surrounding the valve recess (19) together with the airtight layer (16; 27) is clamped in the mounted and assembled state of the seal-integrity unit (34) between a mounting adapter (36) of the measuring component and the testing unit base (37).
- Protective breathing mask according to claim 6, characterised in that the mounting adapter (36) of the measuring component and the testing unit base (37) can be screwed together.
- Protective breathing mask according to claim 6 or 7, characterised in that the measuring component comprises a measuring tube (35) with in particular a spherical display element (39) arranged so as to be movable within the inner chamber.
- Protective breathing mask according to any one of claims 6 to 8, characterised in that the measuring component comprises an at least partially transparent measuring component wall (38).
- Protective breathing mask according to any one of claims 6 to 9, characterised in that the measuring component is provided with a measurement scale (40).
- Protective breathing mask according to any one of claims 6 to 10, characterised in that the measuring component comprises a measuring tube (35), one end of which has a cross-sectional tapering and leads into an air opening (42).
- Method for testing the seal-integrity of a protective breathing mask (1; 26) according to any of the preceding claims, whereina) the protective breathing mask (1; 26) is fitted in that the mask filter element (2; 28) is placed on the face of a mask wearer and is secured onto the head of the mask wearer by means of the head fastening band (7, 8),b) when the mask wearer inhales a test is carried out to see whether negative pressure is formed in an inner mask chamber formed between the face of the mask wearer and the mask filter element (2; 28), andc) the airtight layer (16; 27) is removed at least partly if negative pressure is found in the inner mask chamber during the test.
- Method according to claim 12, characterised in that the negative pressure formed in the inner mask chamber is identified with an exhalation valve (9) inserted into the mask filter element (2; 28) and by the collapsing inwards of the mask filter element (2; 28).
- Method according to claim 12, characterised in that the negative pressure forming in the inner mask chamber with a seal-integrity testing unit (34) inserted into the mask filter element (2; 28) is determined by means of a display which can be read on the seal-integrity testing unit (34).
- Method according to claim 14, characterised in that having determined the negative pressure in the inner mask chamber the seal-integrity testing unit (34) is removed and the exhalation valve (9) is inserted instead into the mask filter element (2; 28).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15186150T PL3011998T3 (en) | 2014-10-21 | 2015-09-22 | Protective breathing mask, and method for testing same for leaks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014221311.8A DE102014221311B3 (en) | 2014-10-21 | 2014-10-21 | Respiratory mask and method for sealing fit of a respiratory mask |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3011998A1 EP3011998A1 (en) | 2016-04-27 |
EP3011998B1 true EP3011998B1 (en) | 2017-03-01 |
Family
ID=54196822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15186150.7A Active EP3011998B1 (en) | 2014-10-21 | 2015-09-22 | Protective breathing mask, and method for testing same for leaks |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3011998B1 (en) |
DE (1) | DE102014221311B3 (en) |
ES (1) | ES2622862T3 (en) |
PL (1) | PL3011998T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4139006A2 (en) | 2020-04-24 | 2023-03-01 | Löwenstein Medical Technology S.A. | Breathing mask with particle filter |
DE102020002516B3 (en) * | 2020-04-25 | 2021-05-12 | Serv-O-Tec Druck- Und Papierverarbeitungsmaschinen Gmbh | Disposable protective mask with prior use notification |
EP4279143A1 (en) | 2022-05-17 | 2023-11-22 | Löwenstein Medical Technology S.A. | Breathing mask with particulate filter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE613672C (en) * | 1930-11-02 | 1935-05-23 | Draegerwerk Heinr U Bernh Drae | Device for checking the tightness of gas protective masks |
DE2651217B1 (en) * | 1976-11-10 | 1978-04-06 | Draegerwerk Ag, 2400 Luebeck | Test device for the tight fit of respiratory masks |
DE8814803U1 (en) * | 1988-11-28 | 1990-03-29 | Moldex-Metric AG & Co. KG, 72141 Walddorfhäslach | Half mask |
US5529056A (en) * | 1994-08-12 | 1996-06-25 | Tecnol Medical Products, Inc. | Apparatus and method for testing respirator fit and seal |
US6098624A (en) * | 1996-12-16 | 2000-08-08 | Utamaru; Masanobu | Simple mask for protection of respiratory system |
US8443806B2 (en) * | 2005-04-29 | 2013-05-21 | Honeywell International Inc. | Face piece seal check device |
WO2011123403A1 (en) * | 2010-04-02 | 2011-10-06 | 3M Innovative Properties Company | Filter systems including optical analyte sensors and optical readers |
DE202013011420U1 (en) * | 2013-12-20 | 2014-03-05 | Uvex Arbeitsschutz Gmbh | Holder for a fastening strap and respirator with such a holder |
-
2014
- 2014-10-21 DE DE102014221311.8A patent/DE102014221311B3/en not_active Expired - Fee Related
-
2015
- 2015-09-22 ES ES15186150.7T patent/ES2622862T3/en active Active
- 2015-09-22 EP EP15186150.7A patent/EP3011998B1/en active Active
- 2015-09-22 PL PL15186150T patent/PL3011998T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2622862T3 (en) | 2017-07-07 |
EP3011998A1 (en) | 2016-04-27 |
DE102014221311B3 (en) | 2016-01-28 |
PL3011998T3 (en) | 2017-08-31 |
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