EP4347054A1 - Schutzhauben-anordnung - Google Patents
Schutzhauben-anordnungInfo
- Publication number
- EP4347054A1 EP4347054A1 EP22730739.4A EP22730739A EP4347054A1 EP 4347054 A1 EP4347054 A1 EP 4347054A1 EP 22730739 A EP22730739 A EP 22730739A EP 4347054 A1 EP4347054 A1 EP 4347054A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- protective hood
- housing
- blower
- air
- arrangement according
- 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.)
- Granted
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
- A62B18/04—Gas helmets
- A62B18/045—Gas helmets with fans for delivering air for breathing mounted in or on the helmet
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/04—Hoods
-
- 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
- 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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
-
- 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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/084—Means for fastening gas-masks to heads or helmets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
- A41D13/1153—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a hood
Definitions
- the invention relates to a protective hood arrangement, according to the preamble of claim 1, and a control arrangement for protective clothing with artificial ventilation by means of a fan, in particular for a protective hood arrangement, according to the preamble of claim 14.
- PPE personal protective equipment
- cleanroom clothing to avoid contamination.
- problems with comfort, cooling and e.g. fogging of glasses often arise.
- An additional risk if the head protection is not completely closed is a risk of infection in both directions. This is particularly important when dealing with Covid-19, where both the protection of the user of the PPE or the cleanroom clothing and their environment from any infection by the user of the PPE or the cleanroom clothing must be avoided.
- Conventional protective equipment cannot do this, or only with great effort, so that widespread use of such personal equipment is almost impossible due to the high costs.
- EP 0468188 A1 discloses a protective hood arrangement with a flexible protective hood with a visor that covers the user's head and shoulders and is stretched over a support structure.
- An active air exchange system with one blower each for the inhaled air and the exhaled air, each including a housing and a filter permanently integrated in the protective hood. Both fans are arranged with their housings entirely within the protective hood, where the fan for the exhaled air is positioned in the neck area, while the fan for the inhaled air is located in the rear apex area of the protective hood.
- GB 2399759 A discloses a rigid helmet designed to protect the user against mechanical impacts and has an integrated air supply.
- a blower with an upstream filter is permanently integrated into the helmet and can be mounted on the air inlet port on the helmet.
- EP 3399881 Bl shows a protective hood arrangement with a flexible protective hood with a viewing window, the protective hood consisting of a filter material and stretched over a supporting structure.
- a housing for an inhalation air blower is integrated into the support structure and occupies an area from the apex of the assembly to over the user's forehead.
- a sensor arrangement is used to determine the microclimate inside the protective hood and/or to detect the activity of the user, with the speed of the blower and thus the air turnover being controlled as a function of this.
- the object of the present invention was to overcome the disadvantages of the prior art and to provide a device in which both areas on both sides of the contamination barrier are protected or the system protects against contamination in both directions and in which the user of the device is supplied with breathing air in the best possible and safe manner thanks to an arrangement with high wearing comfort and safety.
- the invention relates to a protective hood assembly comprising a protective hood covering the head and shoulders of the user and made of flexible, resilient material and having a visor, a supporting structure for the protective hood, an active air exchange system with a fan, an inside of the protective hood arranged and separate from the protective hood housing for the blower and a filter integrated into the protective hood for the used air.
- this protective hood arrangement is characterized by at least one air inlet opening in the protective hood which is unimpeded for air and leads to the blower.
- the unhindered patency relates to the breathing air of the user of the arrangement. Due to the design of the protective hood with the continuous air inlet opening, it can be used for a wide variety of applications, in which the opening can remain open in clean rooms, for example, since it is guaranteed here that no harmful material can get inside the protective hood and only the room atmosphere against to protect against contaminants originating from the user. Nevertheless, the opening can advantageously be covered by a filter fleece, preferably from a Material of protection class FFP2 to ensure the highest possible security. If necessary, a clean room fabric can also be used for the cover. When used in contaminated environments, on the other hand, the interior of the protective hood and thus its user can be protected against harmful substances via the air inlet opening after or preferably upstream of the filter.
- Protective hoods are preferably used which are provided with a housing for the blower which is fastened to the carrying structure inside the protective hood.
- these are characterized by an intake connection for the inhaled air, which extends from the housing and is sealed and guided through the air inlet opening of the protective hood on the outside thereof and provides a detachable connection between the support structure and the protective hood.
- an intake connection for the inhaled air which extends from the housing and is sealed and guided through the air inlet opening of the protective hood on the outside thereof and provides a detachable connection between the support structure and the protective hood.
- a grid cover is advantageously provided purely for mechanical protection of the fan, in order to cover the air inlet opening and/or the intake stub of the fan.
- the opening and/or socket are covered by a clean room fabric or a filter fleece, preferably by a material of protection class FFP2, or by a breathing air filter placed on the intake socket on the outside of the protective hood in front of the blower for the fresh air.
- a clean room fabric or a filter fleece preferably by a material of protection class FFP2
- a breathing air filter placed on the intake socket on the outside of the protective hood in front of the blower for the fresh air.
- the housing is arranged on the inside in the area between the apex and the front side of the protective hood.
- the housing is also fastened at this point, since there are usually carrying devices that can be used for this purpose.
- the housing attached to the face of the support structure for the protective hood assembly, since the visor is typically held in this area on a head strap or head mount which can also support the weight of the housing and fan.
- this also includes all components and units directly connected to the housing and the fan, for example the drive for the fan, a control board, a directly connected energy supply, etc. .
- the intake port preferably leads through an upper section of the viewing window covered by the protective hood and the breathing air filter is preferably arranged above the visible or transparent area of the viewing window.
- Another embodiment of the arrangement according to the invention provides that the housing of the blower and also the air intake connection are arranged on the rear side of the protective hood.
- the housing does not impede the inclination of the head of the user of the protective hood and the weight of the housing and fan does not have to be taken along with every head movement.
- the arrangement of the housing at the level of a neck section of the protective hood is particularly advantageous in this regard.
- the air inlet opening and any breathing air filter that may be present can also be arranged in the neck area of the protective hood.
- the weight distribution and the absorption of the weight of the blower and housing by the user of the protective hood can be adjusted particularly well if a carrying frame or an arrangement with at least one carrying strap can be used underneath the protective hood and can be releasably connected to the housing.
- the housing can also be detachably connected to the carrying structure.
- Another embodiment of the invention provides for a helmet located within the protective hood, to which the support structure for the housing or the housing itself with its fan and the energy supply unit and preferably of course also the protective hood itself with its viewing window are attached. This also protects the user from mechanical effects, such as can occur when using the arrangement in an industrial area.
- a further embodiment of the invention provides that the housing is arranged with at least one outlet opening for the fresh air directed towards the interior of the protective hood. This feature also helps to avoid unnecessarily long air lines that increase the effort for decontamination or the volume to be disposed of.
- the blow-out opening is preferably directed towards the front of the protective hood and/or towards the visor in order to direct the fresh air as directly as possible to the mouth and nose of the user and at the same time to prevent the visor from fogging up.
- a further advantage of an air flow directed and concentrated through this blow-out opening onto the mouth-nose area of the user of the protective hood arrangement is the removal of the exhaled air laden with carbon dioxide. In this way, a CO2 content of less than 1% by volume can be optimally achieved for the air available for inhalation.
- the drive of the fan is integrated in its housing.
- An embodiment is preferred in which a self-sufficient energy supply unit can be coupled to the housing.
- the energy supply unit is positioned at a distance from the housing on the inside of the protective hood.
- the power supply unit is preferably attached to a shoulder strap or forehead strap and preferably to the rear side opposite the viewing pane, so that the considerable weight of the power supply unit can be absorbed more easily by the user.
- the energy supply unit is particularly preferably connected to the drive and the control arrangement for the blower via a preferably flexible power and control line.
- the housing has a receptacle for the self-sufficient energy supply unit, which can be coupled directly to the housing.
- the power supply unit can preferably be plugged into the housing.
- the receptacle is preferably positioned in the area of the end face of the support structure for the protective hood arrangement and/or in the longitudinal center plane of the support structure, since the weight distribution of the blower and power supply unit is optimal here the support frame is matched, the weight of the housing and fan and also the
- Energy supply unit can then absorb evenly and balanced.
- At least a partial area of the protective hood consists of a filter fleece, which represents the filter for the used air, with the partial area preferably being arranged on the rear side of the protective hood.
- a material of at least protection class FFP2 is preferably provided here.
- the main part of the protective hood in this embodiment is made of a material which is impervious to solid or liquid aerosols with negligible volatility and decomposition as well as to germs and viruses.
- the entire protective hood can consist of a filter fleece, preferably also made of a material of at least protection class FFP2.
- the production of the protective hood from a clean room fabric is also possible if an application is to take place exclusively in aseptic clean rooms.
- the blower is connected to a control arrangement which activates the blower after the breathing air filter has been inserted.
- the blower can also be activated by inserting a grid cover, for example.
- a further aspect of the invention is an improved control arrangement for the protective hood assembly according to any one of the preceding paragraphs.
- a control arrangement characterized by a sensor unit which outputs at least one signal representing the respiratory rate of the user, an evaluation unit with at least one input for the signal from the sensor unit and an output for a control signal for the fan, a control unit for the fan with an input for the control signal from the evaluation unit, wherein the evaluation unit is designed to generate a control signal for the blower that is proportional to the breathing frequency, such that the The amount of air conveyed by the blower is proportional to the respiratory rate.
- the CO2 content of the air inside the protective equipment which increases when the respiratory rate increases, can be compensated for by increasing the air throughput and kept below the level that is harmful to the user.
- the air volume is preferably in a range between 40 l/min and 100 l/min and the blower is designed in such a way that on the one hand it can be regulated exactly up to the two limits and also ensure higher loads when conveying air volumes in the upper limit range over a longer period of time without overloading can.
- the respiratory rate can be determined easily and reliably by monitoring the pressure inside the protective clothing, in particular in the protective hood or other areas near the user’s mouth and nose, for which purpose, according to a further embodiment of the invention, the sensor unit has a pressure sensor for the air inside the protective hood .
- An extended embodiment of a control arrangement provides that the sensor unit has a CO2 sensor and the evaluation unit is designed such that if a limit value for the CO2 content inside the protective hood is exceeded, the blower accelerates and/or a warning signal is generated. This implements a safety function in the event that the rapid regulation of the pressure or respiratory rate, which is adapted to the user's breathing air requirement, fails or is disrupted.
- the evaluation unit is preferably designed in such a way that the control signal for the fan is only generated after a predefinable number of shortened or lengthened breathing cycles.
- a further safety level is provided by the fact that a safety algorithm is implemented in the unit, which initiates at least one predefinable action in the event of an unmeasurable and/or nonexistent pressure change, in particular initiates a warning signal and/or switches the blower into switches to a security mode.
- the safety algorithm is preferably designed in such a way that, in the safety mode, the blower is activated to deliver an air volume of 80 l/min.
- FIG. 1 shows a schematic view of a first embodiment of a protective hood arrangement according to the invention from an angle from the front;
- FIG. 2 shows the protective hood arrangement of FIG. 1 without the actual protective hood itself, in a view obliquely from above;
- Fig. 3 shows the arrangement of Fig. 2 directly from the front
- FIG. 4 shows a vertical section along the line IV-IV of FIG. 3 through the housing, the fan and the breathing air filter of the arrangement of FIG. 2;
- Figure 5 is a horizontal section through the housing, fan and breathing air filter of the assembly of Figure 2, taken along line V-V of Figure 3;
- FIG. 6 shows a further enlarged view of an area of the housing with the arrangement for filter identification
- Figure 7 is an exploded view of the assembly of Figure 2;
- FIG. 9 shows a schematic view of a second embodiment of a protective hood arrangement according to the invention from the front;
- Fig. 10 is a side view of the housing, the breathing air filter, the recording for
- FIG. 11 shows a front section through an arrangement corresponding to FIG. 10, adapted for clean room applications
- FIG. 12 shows a schematic view of a housing and its support structure for clean room applications in a fourth embodiment
- 13 shows a protective hood arrangement according to a further embodiment of FIG
- Fig. 14 shows the arrangement of Fig. 13 from the front
- FIG. 15 shows another embodiment of a protective hood arrangement according to the invention from an angle from the front and from above;
- Figure 16 is a top view of the housing of the fan
- Figure 17 is a front view of the housing of Figure 13;
- Fig. 18 is a front view of another embodiment of a housing of a fan
- Figure 19 is a front view of the housing of Figure 16.
- FIG. 20 shows an exploded view of the housing, fan and associated components according to FIG. 16;
- FIG. 21 shows a cross section through the housing and the respiratory air filter according to FIG. 16 at the level of the control arrangement
- Figure 22 is a schematic view of a housing and its supporting structure with helmet for industrial applications, with the protective hood partially removed for clarity; 23 shows a section through a further embodiment of an invention according to the invention
- FIG. 24 shows a view through the fan housing together with the carrying structure of a further embodiment of a protective hood according to the invention, again adapted for clean room applications;
- Figure 25 is an oblique front and top view of the embodiment of the guard assembly utilizing the fan housing of Figure 24;
- FIG. 26 shows a catch section through the upper region of the arrangement of FIG. 25;
- FIG. 27 shows a longitudinal section through the upper area of an arrangement according to FIG. 22.
- the exemplary embodiment of a protective hood arrangement according to the invention shown in its entirety in an oblique front view in FIG. 1, has a protective hood 1 covering the head and shoulders of the user.
- a material is preferably used which is tight against solid or liquid aerosols with ver negligible volatility and decomposition as well as against germs and viruses.
- This can be, for example, a non-woven fabric made of high-density polyethylene (PE-D), such as that offered by DuPont under the brand name Tyvek®.
- PET high-density polyethylene
- a clean room fabric with defined filter properties and air permeability approved for clean rooms in accordance with DIN EN ISO 14644-1 can also be used as the material for the protective hood 1.
- the head part 2 of the protective hood 1 has a preferably curved, transparent viewing pane 3 at the front.
- a highly transparent polyester film is preferably used for the lens 3. It is preferably pivotally attached by means of the joints 19 to a rigid or flexible support structure 18, such as a running and preferably elastic or adjustable strap around the user's head.
- a shoulder piece 4 connects to the head part 2 .
- the protective cover arrangement is equipped with an active air exchange system, which includes a blower 6 accommodated in a housing 5, as can be seen particularly well in FIGS.
- the housing 5 can be made by an SFS process (selective laser sintering), ie by an additive manufacturing process.
- the fan 6 is here, for example, as a radial fan with a Running fan wheel 21 and control technically supplied via a circuit board 10 with a control arrangement.
- the drive for the fan 6 is advantageously inte grated in the housing 5, and an encapsulated unit can be provided.
- the air can be supplied to the fan 6 through at least one opening in the protective hood 1 if no contamination is to be expected from the outside, such as when used in clean rooms.
- the blower can attach directly to the opening or can be connected to it via at least one air line.
- this or each opening in the protective hood 1 can be covered by a non-detachably attached filter fleece, preferably consisting of a material of protection class FFP2.
- the openings can also be used to guide breathing air into the protective hood 1 via breathing air filters 7 .
- the edge of each of these openings can be reinforced, for example by plastic or metal frames.
- An advantageous embodiment expands the system to include a breathing air filter 7 for the fresh air that is used in front of the blower 6 - specifically in the flow direction of the intake air - and is preferably arranged on the outside of the head part 2 of the protective hood 1.
- the protective hood 1 preferably also has a filter for the used air.
- the breathing air filter 7 is typically a commercial, preferably screw-in P3 filter (according to EN 12941 with a very high degree of separation) for protection against solid or liquid aerosols with negligible volatility and decomposition as well as against germs and viruses.
- the use of an FFP2 filter as a breathing air filter 7 is also possible.
- a circuit board 22 for the filter detection is arranged between the blower 6 and the connection 9 for the respiratory air filter 7 . It ensures that only after inserting a breathing air filter 7, the blower 6 can be put into operation and is preferably also started automatically when the filter 7 is inserted. The fan 6 is also switched off again via the circuit board 22 as soon as the filter 7
- FIG. 5 A preferred exemplary embodiment for the implementation of the filter recognition is shown in FIG. 5 and in the enlarged section of FIG.
- the intended circuit board 22 is preferably made of plastic screws 24 in the housing 5, particularly in the loading area of the connection 9 for the filter 7, fastened, which screws 24 are accommodated in blind holes 25. Via a compression spring 26 between the head of the screw 24 and the circuit board 22 is acted upon away from the housing 5 in the direction of the point in which the filter 7 used is or should be.
- the properly inserted breathing air filter 7 presses on at least one limit switch 27 which is mounted on the circuit board 22 on the opposite side of the compression spring 26 .
- the circuit board 22 can be pressed somewhat into the housing 5 against the action of the compression spring 26 .
- the blower 6 cannot be started, with a buzzer 28 on the circuit board 22 also generating a warning sound preferably before the case of energizing the drive of the blower 6 when the filter 7 is not used becomes.
- the housing 5 is arranged inside on the front side of the protective hood 1.
- the housing is preferably attached directly to the visor 3 in the area of its upper edge, where the visor 3 is held on the support structure 18, which then also supports the weight of the housing 5 and fan 6 as well as all of them directly connected to the housing 5 and/or the blower 6 associated components and units, such as the drive for the Ge blower, a control board, a directly connected power supply, etc., can accommodate.
- a passage 20 through preferably the upper, from the head part 2 of the protective hood 1 covered portion of the lens 3 passes, which is used to attach the housing 5.
- connection 9 for the respiratory air filter 7 is provided on the housing 5 of the blower 6 .
- a self-closing dust cap (not shown, conventional embodiment) prevents contamination of the fan 6 when the filter 7 is removed.
- the connection 9 lies with its housing-remote, annular end sealingly around the opening of the passage 20, through which the breathing air filter 7 can be screwed into the connection 9 or tightly fitted or used in some other way.
- the breathing air filter 7 and the connection 9 are pressed firmly against the visor 3 and are connected to it in a sealing manner and the housing 5 is mechanically supported.
- the breathing air filter 7 is above the visible area of the visor 3, outside the field of vision of the user of the protective hood arrangement.
- the used air preferably leaves the protective hood 1 not via a non-return valve, as is usual, but via a large-area filter, which is preferably integrated in the rear part of the protective hood 1 . It is explained further below in connection with the further embodiment of a protective hood arrangement.
- At least one vent opening 12 directed into the interior of the protective hood 1 is arranged for the fresh air.
- This is preferably oriented in the direction of the visor and is arranged at the end of one or more air ducts bent towards the visor 3 and has a wide rectangular shape in cross section extending parallel to the visor 3 in order to form an air curtain to prevent the visor 3 from fogging up generate and lead C02 away from the user and thus achieve a C02 proportion in the inhaled air of less than 1% by volume.
- one or more silencers or similar elements can be provided.
- a self-sufficient energy supply unit 15 can be connected to the housing for the power supply of the blower 6 and also the circuit board 10 of the control arrangement and/or the circuit board 22 for the filter detection.
- the blower 6 and the other current consumers of the arrangement are preferably supplied via a commercially available lithium-ion battery pack. It can advantageously be operated with different air volumes, which are calibrated from 60 to 120 l/min. The air flow remains constant over the entire operating time of more than 4 hours. The oxygen content of the ambient air must be more than 17% by volume. The inward leakage corresponds to a maximum of 0.2% according to EN12941.
- the power supply unit 15 is located away from the housing 5 on the rear side of the head part 2 of the protective hood 1, in the area of the back of the head of the user of the protective hood arrangement, but of course on the inside of the head part 2. It is preferably attached to the respective supporting structure 18 for the protective hood 1 and also the housing 5 and is therefore located opposite the visor 3. Via a preferably flexible power and control line 23 - in FIGS. 3 and 8 in unconnected, straight protruding from the housing 5 - the power supply unit 15 with the drive and the control arrangement for the blower 6 be connected, the connection being detachable again, for example, to allow the power supply unit 15 to be switched off.
- an energy supply unit can also be worn on the body, away from the hood, inside or outside of the protective clothing.
- a battery pack could be attached to a belt around the middle of the body and connected to the housing 5 with a cable. The battery pack could even be worn outside the suit, with the energy being fed in via a coupling piece tightly incorporated in the suit and from there via a cable on the inside of the suit and the protective hood 1 to the housing 5 .
- the protective hood 1 can only be used in combination with the blower 6. This is inserted into the protective hood 1 when ready for operation, after which the filter 7 is screwed in and the blower 6 is thus put into operation. The user then puts the protective hood 1 together with the housing 5 with the blower 6 and the power supply unit 15 is attached to the support structure 18, which also carries the visor 3 with the housing 5, and the connection line 23 is connected to the Power supply unit 15 connected. A smock or overall can be put on over the surrounding collar or the shoulder piece 4 and thus a tight system can be achieved. When undressing, the protective hood 1 on the clean shoulder piece 4 can be pulled back over the head after the gown has been removed.
- the protective hood arrangement 1 can thus be put on and/or taken off in the shortest possible time and is easy and quick to handle. It can also be used for simple and contamination-free lining without the additional help of assistants, after which the system can be sterilized with H2O2, for example. When used correctly, a protection factor greater than 5000 can be achieved.
- FIG. 9 A schematic front view of a second embodiment of a protective hood arrangement according to the invention is shown in FIG. 9. Like that of FIG on, and the same materials can be used as explained in connexion with the first embodiment.
- the head part 2 of the protective hood 1 also has a preferably curved, transparent viewing pane 3 from the front, and a shoulder piece 4 again connects to the head part 2 .
- the air filter 7 is arranged in the forehead area and is typically connected to the fan 6 through the viewing window 3
- the air filter 7 in the embodiment of the ligures 9 to 11 is located in the area between the forehead and the crown of the head part 2 the protective hood 1 in order to optimize the weight distribution with the other components of the arrangement in such a way that it is more comfortable to wear.
- Lig. 10 shows a side view of the housing 5, the breathing air filter 7, the receptacle for the power supply unit, the viewing window 3 and the support structure 18 of the embodiment of Lig. 9.
- the material of the protective hood 2 is also partially shown in section.
- the Ge housing 5 for the blower 6 adjoins a front section 5a which, when the protective hood 2 is in place, comes to lie in the user's face area and is preferably connected to the front section of the support structure 18 .
- a housing 15a for the power supply unit 15 is also formed, which preferably lies parallel thereto and parallel to the visor 3.
- the viewing pane 3 can be attached or suspended on the receiving housing 15a via a mounting element 15b.
- the housing 5 encloses an angle of between 15 and 90° with the front section 5a and is thus in the area between the upper edge of the viewing window 3 and the apex area of the protective hood 2.
- the housing 5 and the front section 5a preferably form an angle of approximately 45° in.
- a crown strap of the carrying structure preferably leads from the housing 5 to the back of the head.
- a printed circuit board housing 15c contains a printed circuit board with a control arrangement for the energy supply, for the drive and the control of the fan 6 as well as any other functions described in connection with the other embodiments.
- FIG. 11 Such a further embodiment of a protective hood according to the invention Arrangement is shown in Fig. 11 as a vertical longitudinal section through the housing 5, the fan 6, the receptacle 15a for the power supply unit 15 and the visor 3 and other elements explained below.
- the blower 6 or the housing 5 can start directly with an intake port 5b at the Publ opening or enforce this opening.
- the intake port 5b can be open, for safety reasons and to protect the fan 6 it is preferably covered by a non-detachable filter fleece, preferably made of a material of protection class FFP2.
- the edge of these openings in the protective hood 1 can be strengthened ver, for example by plastic or metal frames.
- the head part 2 of the protective hood 1 can also be additionally fixed to the intake manifold 5b by means of a plastic or rubber disk 29 with a central hole, which comes to lie in a circumferential groove of the intake manifold 5b with a reinforcement of the edge of the central hole.
- FIG. 12 shows a further embodiment of a protective hood arrangement with a somewhat different shape of the housing 5 for the blower 6.
- a metal ring 33 is arranged around the opening in the pane 29 or directly in the protective hood 1, which has a corresponding unobstructed continuous opening, and is sewn into the protective hood 1, glued to it or to the pane 29, welded or in some other way Way connected that does not endanger the tightness of the arrangement.
- magnets 32 are arranged in the housing 5, which xieren the metal ring 33 and thus the protective hood 1 on the housing 5 fi.
- a blow-out passage 35 for the conveyed breathing air which is preferably designed in one piece with the housing 5 or is detachably mounted on it, leads from the housing 5 directly to the front side of the protective hood 1. or Scheitelbe rich of the user to note, which causes a better balance of the overall arrangement.
- FIGS. 13 to 21 also has a protective hood 1 covering the head and shoulders of the user.
- the head part 2 is preferably self-supporting here and has a preferably curved, transparent viewing pane 3 at the front.
- a shoulder piece 4 follows. The explanations for the first exemplary embodiment apply in the same way to the materials used.
- the protective hood arrangement is also equipped here with an active air exchange system, which includes a fan 6 accommodated in a housing 5 .
- the system also includes a breathing air filter 7 for fresh air, which is used in front of the fan 6 and is preferably arranged on the outside of the head part 2 of the protective hood 1, and a filter in the protective hood 1 for the used air.
- the used air does not leave the protective hood 1 via a non-return valve, as is usual, but via a large-area filter, which is preferably integrated in the rear part of the protective hood 1 and preferably consists of a filter fleece 8, which forms part of the rear side of the head part 2 of the protective hood 1.
- This fleece 8 can have the same filtering properties as the breathing air filter 7 at the air inlet.
- a material of at least protection class FFP2 is preferably provided here.
- the entire protective hood can consist of a filter fleece, preferably also made of a material of at least protection class FFP2.
- conventional clean room fabrics can also be used. Such a solution can also be provided for all other protective hood arrangements according to the invention.
- the hood is preferably sealed at the neck to ensure this filtration. This ensures that the environment is protected, even if the user is already infected with a virus.
- the same type of filtering of the used air, which is discharged from the interior of the protective hood 1, is also preferably used in the two exemplary embodiments of a protective hood arrangement previously explained in detail, as shown in Figs.
- the shoulder piece 4 can also be worn outside of overalls or a smock.
- the breast and back bib are fixed around the breast with the help of sewn straps.
- the sealing of the protective hood 1 on the neck is achieved here by an adjustable elastic inner collar band. No one can Air escape unfiltered by blowing out below the shoulder piece 4 or the chest and back bib, but only filtered through filter fleece 8 or other Filtereinrich lines for the exhaled air.
- housing 5, blower 6 and breathing air filter 7 essentially corresponds to that of the first exemplary embodiment.
- the arrangement of the fan 6 and the housing 5 differs significantly from the protective hood arrangement described above.
- the Ge blower 6 is carried in the case of use in the neck inside the protective hood 1, so that it can not be contaminated during use.
- At least one inside the protective hood 1, preferably to the front of the head part 2 of the protective hood 1, is on the housing 5 of the fan 6, directed from blowing opening 12 arranged for the fresh air.
- the housing 5 is followed by ventilation tubes 13 which extend forward on the sides of the head part 2 , past the head of the user of the protective hood 1 , in the direction of the visor 3 .
- the exhaust openings 12 are then located at the outermost end of the tubes 13.
- FIG. 19 shows an exploded view of an advantageous embodiment in which the ventilation tubes 13 have silencers 14 used.
- the breathing air flows past the head of the user of the protective hood arrangement 1 on both sides, does not irritate the eyes and also prevents the visor from fogging up due to this direct air flow.
- visual aids such as glasses and contact lenses can be worn without any problems.
- the drive for the fan 6 is advantageously integrated into the housing 5, with an encapsulated unit being able to be provided.
- a self-sufficient energy supply unit 15 can be coupled directly to the housing for the energy supply of the blower 6 and also of the circuit board 10 for the control arrangement.
- a receptacle is seen in the housing 5, into which the power supply unit 15 can be inserted, preferably while producing a tight seal of the receptacle in the housing 5 by the power supply unit 15, possibly using seals or similar precautions.
- the blower 6 or the power supply unit 15 can also have a low voltage s - output for a preferably electrochemical device for generating ozone see ver and such a device can be arranged separately or integrated into the housing 5 of the blower 6 .
- the protective hood arrangement comprises a carrying frame or a chest harness 16 as an arrangement with at least one carrying strap which can be used underneath the protective hood 1.
- the housing 5 can be releasably connected to the chest bracket 16 by means of conventional connecting means, for example in the form of snap fasteners 17, which can be arranged in the area of the ventilation tubes 13.
- conventional connecting means for example in the form of snap fasteners 17, which can be arranged in the area of the ventilation tubes 13.
- the protective hood 1 can only be used in combination with the blower 6 again.
- the housing 5 is fastened to the chest hamisch 16, after which a smock or overalls are put on again over the running collar or the shoulder piece 4 and thus a tight system is achieved can.
- the explanations for the protective hood arrangement described above apply again.
- a further embodiment of the invention according to FIG. 22 provides a helmet 30 lying within the protective hood, on which the supporting structure 18 for the housing 5 with the fan 6, the energy supply unit 15 and of course also the protective hood 1 with its viewing window 3 (not shown here) are attached themselves.
- the basic embodiment of the housing 5 with a blow-out passage 35 leading forward and downward into the area of the visor 3 and an energy supply unit 15 positioned in the upper head area is shown in longitudinal section in FIG.
- the embodiment shown here is equipped with a typical carrying structure 18 comparable to a bicycle helmet provided and designed by arranging a breathing air filter 7 for use in a contaminated environment.
- FIG. 24 A similar design, but now for use in clean rooms, is shown in FIG. 24, with the opening of the suction nozzle 5b protruding through the through opening of the protective hood 1 to protect against the ingress of larger contaminants or fragments into the blower 6 through a grid cover 34 is protected.
- the outermost edge of the intake port 5b and the grid cover 34 can also be seen in the view of FIG. 25, which shows the clean room protective hood arrangement in its entirety, as well as in the longitudinal section of FIG. 26.
- FIG. 27 shows a comparable section through a protective hood arrangement (without the actual protective hood itself) with a helmet 30 and designed for contaminated environments.
- a further aspect of the invention is a control arrangement that ensures the user a reliable supply of breathing air with the correct physiological composition, in particular when the user's stress and thus his oxygen requirement but also the CO2 in the exhaled air change rapidly and/or sharply .
- the control arrangement 10 is equipped with or connected to a sensor unit 42, which outputs at least one signal representing the respiratory rate of the user.
- a sensor unit 42 which outputs at least one signal representing the respiratory rate of the user.
- an evaluation unit 41 which can also be implemented by a hardware or software module of the control arrangement 10, there is at least one input for the signal from the sensor unit 42 and one output for a control signal for the blower 6. which is fed into its control unit 9 and to an input for the control signal from the evaluation unit 41 is present.
- a proportional control signal for the fan 6 is generated on the basis of the respiratory rate, such that the amount of air conveyed by the fan 6 is proportional to the respiratory rate.
- the CO 2 content of the air inside the protective hood 1 which increases when the respiratory rate increases, can be compensated for by increasing the air throughput and kept below the value that is harmful to the user.
- the C02 content of the breathing air must never exceed an average content of 1% by volume.
- the air volume is preferably in a range between 40 l/min and 100 l/min and the blower 6 is designed in such a way that on the one hand it can be regulated exactly up to the two limits and also higher loads when conveying air volumes in the upper limit range over a longer period of time without overloading can ensure.
- a simple and reliable determination of the respiratory rate can be achieved by monitoring the pressure inside the protective hood 1, preferably in the area near the user's mouth and nose.
- the sensor unit 42 is equipped with at least one pressure sensor 43 for the air inside the protective hood 1 .
- An extended embodiment of a control arrangement according to the invention provides that the sensor unit 42 has a CO2 sensor 44 and the evaluation unit is designed such that if a limit value for the CO2 content inside the protective hood 1 is exceeded, the blower 6 accelerates and/or generates a warning signal becomes. This implements a safety function in the event that the rapid regulation of the pressure or respiratory rate, which is adapted to the user's breathing air requirement, fails or is disrupted.
- the evaluation unit 41 is preferably designed in such a way that the control signal for the blower 6 is only generated after a predeterminable number of shortened or lengthened breathing cycles .
- a further safety level is provided by the fact that a safety algorithm is implemented in the control unit 9 or the evaluation unit 41, which initiates at least one definable action, in particular a warning signal, if the pressure change cannot be measured and/or does not exist /or the fan switches to a safety mode.
- the safety algorithm is preferably designed in such a way that in the safety mode the blower is activated to deliver an air volume of 80 l/min.
- connection 0 circuit board control arrangement 1 switch 2 exhaust opening 3 air line tube 4 silencer 5 energy supply unit a receiving housing b mounting element c circuit board housing 6 support frame 7 push buttons 8 support structure 9 joint 0 passage 1 fan wheel 2 circuit board filter recognition 3 connecting line 4 screw 5 blind hole 6 compression spring 7 limit switch 8 buzzer 9 plastic disc 0 helmet
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Toxicology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HRP20250597TT HRP20250597T1 (hr) | 2021-05-28 | 2022-05-19 | Sklop zaštitne kapuljače |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50428/2021A AT525121A1 (de) | 2021-05-28 | 2021-05-28 | Schutzhauben-Anordnung |
| PCT/EP2022/063665 WO2022248341A1 (de) | 2021-05-28 | 2022-05-19 | Schutzhauben-anordnung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4347054A1 true EP4347054A1 (de) | 2024-04-10 |
| EP4347054B1 EP4347054B1 (de) | 2025-04-30 |
| EP4347054C0 EP4347054C0 (de) | 2025-04-30 |
Family
ID=82067744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22730739.4A Active EP4347054B1 (de) | 2021-05-28 | 2022-05-19 | Schutzhauben-anordnung |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20240245941A1 (de) |
| EP (1) | EP4347054B1 (de) |
| CN (1) | CN117440852A (de) |
| AT (2) | AT17890U1 (de) |
| BR (1) | BR112023024684A2 (de) |
| CA (1) | CA3221421A1 (de) |
| ES (1) | ES3036058T3 (de) |
| HR (1) | HRP20250597T1 (de) |
| HU (1) | HUE072600T2 (de) |
| PL (1) | PL4347054T3 (de) |
| WO (1) | WO2022248341A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12514320B2 (en) | 2020-12-16 | 2026-01-06 | Zoya, Inc. | Single-use, disposable helmets, hoods, and helmet/hood assemblies, and methods of making and using the same |
| US12485300B2 (en) * | 2020-12-16 | 2025-12-02 | Zoya, Inc. | Single-use, disposable helmets, hoods, and helmet/hood assemblies, and methods of making and using the same |
| AT527052B1 (de) | 2023-10-24 | 2024-10-15 | Tb Safety Ag | Schutzhauben-Anordnung |
| AT527053B1 (de) | 2023-10-24 | 2024-10-15 | Tb Safety Ag | Schutzhauben-Anordnung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5054480A (en) * | 1990-06-14 | 1991-10-08 | Bio Medical Devices, Inc. | Personal air filtration and control system |
| US5711033A (en) * | 1995-10-05 | 1998-01-27 | Bio-Medical Devices, Inc. | Air filtration and control system including head gear |
| US6481019B2 (en) * | 2000-01-18 | 2002-11-19 | Stryker Instruments | Air filtration system including a helmet assembly |
| GB2399758A (en) * | 2003-03-27 | 2004-09-29 | Helmet Integrated Syst Ltd | Respirator with means for controlling a fan in response to a measured flow rate |
| WO2007011646A2 (en) * | 2005-07-14 | 2007-01-25 | Stryker Corporation | Medical/surgical personal protection system providing ventilation, illumination and communication |
| US8020552B2 (en) * | 2007-02-26 | 2011-09-20 | Microtek Medical, Inc. | Helmets and methods of making and using the same |
| US8234722B2 (en) * | 2007-12-14 | 2012-08-07 | Stryker Corporation | Personal protection system with head unit having easy access controls and protective covering having glare avoiding face shield |
| CN105209128A (zh) * | 2013-03-14 | 2015-12-30 | 史赛克公司 | 包括净化吸入系统的空气的紫外线灯的医疗/手术用个人防护系统 |
| SG2013097191A (en) * | 2013-12-04 | 2015-07-30 | Innosparks Pte Ltd | Respiratory device with active venting system |
| EP3399881B1 (de) * | 2016-01-07 | 2021-11-24 | Thi Total Healthcare Innovation Gmbh | Anziehbare barrierevorrichtungen, systeme und verfahren mit berührungsloser steuerung |
| WO2018098657A1 (zh) * | 2016-11-30 | 2018-06-07 | 深圳前海达闼云端智能科技有限公司 | 智能口罩和智能口罩的吸气供应量调节方法 |
| JP6746138B2 (ja) * | 2016-12-05 | 2020-08-26 | 山本光学株式会社 | 呼吸用保護具 |
| KR102267743B1 (ko) * | 2019-10-30 | 2021-06-22 | 주식회사 파로시스템 | 전자제어에 의한 들숨 산소배합과 날숨 이산화탄소 제거기능을 갖는 재호흡장치 |
-
2021
- 2021-05-28 AT ATGM8036/2022U patent/AT17890U1/de unknown
- 2021-05-28 AT ATA50428/2021A patent/AT525121A1/de active IP Right Grant
-
2022
- 2022-05-19 US US18/564,147 patent/US20240245941A1/en active Pending
- 2022-05-19 WO PCT/EP2022/063665 patent/WO2022248341A1/de not_active Ceased
- 2022-05-19 HR HRP20250597TT patent/HRP20250597T1/hr unknown
- 2022-05-19 EP EP22730739.4A patent/EP4347054B1/de active Active
- 2022-05-19 PL PL22730739.4T patent/PL4347054T3/pl unknown
- 2022-05-19 CA CA3221421A patent/CA3221421A1/en active Pending
- 2022-05-19 HU HUE22730739A patent/HUE072600T2/hu unknown
- 2022-05-19 CN CN202280038445.1A patent/CN117440852A/zh active Pending
- 2022-05-19 BR BR112023024684A patent/BR112023024684A2/pt active IP Right Grant
- 2022-05-19 ES ES22730739T patent/ES3036058T3/es active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022248341A1 (de) | 2022-12-01 |
| US20240245941A1 (en) | 2024-07-25 |
| BR112023024684A2 (pt) | 2024-02-15 |
| ES3036058T3 (en) | 2025-09-12 |
| AT17890U1 (de) | 2023-06-15 |
| HRP20250597T1 (hr) | 2025-07-18 |
| CA3221421A1 (en) | 2022-12-01 |
| AT525121A1 (de) | 2022-12-15 |
| EP4347054B1 (de) | 2025-04-30 |
| CN117440852A (zh) | 2024-01-23 |
| HUE072600T2 (hu) | 2025-11-28 |
| EP4347054C0 (de) | 2025-04-30 |
| PL4347054T3 (pl) | 2025-08-11 |
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