EP3946644A1 - Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers - Google Patents
Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzersInfo
- Publication number
- EP3946644A1 EP3946644A1 EP20712572.5A EP20712572A EP3946644A1 EP 3946644 A1 EP3946644 A1 EP 3946644A1 EP 20712572 A EP20712572 A EP 20712572A EP 3946644 A1 EP3946644 A1 EP 3946644A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- user
- nozzle
- air curtain
- nozzles
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- A62B18/003—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort having means for creating a fresh air curtain
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/02—Goggles
- A61F9/029—Additional functions or features, e.g. protection for other parts of the face such as ears, nose or mouth; Screen wipers or cleaning 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
- A62B18/04—Gas helmets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
Definitions
- the present invention relates to a device for generating an air curtain in front of a face of a user, the device including a pump for providing air for generating the air curtain and at least one nozzle for forming the air curtain.
- the object of the present invention is to overcome the above-described disadvantages of conventional protective devices and to provide a device which ensures effective protection for the worker without restricting his mobility and his field of vision.
- the device to be provided should be as light and compact as possible, so that it is as comfortable as possible to wear and is well accepted by workers.
- the device to be provided should be able to be worn, regardless of whether the user wears a beard or glasses to improve eyesight.
- Another concern of the invention is to influence the inhalation resistance of the user as little as possible, so that inhalation for the worker is not made more difficult as possible by wearing the device to be provided.
- the object is achieved by the subject matter of the independent claim 1. Advantageous embodiments of the subject matter of the independent claim can be found in the dependent claims.
- the object is achieved by a device for generating an air curtain in front of a user's face.
- the device is characterized in that the device comprises the following components:
- the at least one nozzle is arranged in the area of a nose of the user on a carrying device in such a way that a mouth and nose area of the user is covered by the air curtain.
- the device is preferably also referred to as a protective device.
- a protective device can be provided in which the user of the device can breathe through the air curtain, the dust and / or harmful particles being deflected by the curtain so that the user does not get any dust or pollutants from the Inhales atmosphere.
- This advantage is achieved in particular through the clever arrangement of the at least one nozzle in relation to a face of the user.
- the proposed arrangement of the at least one nozzle enables the entire mouth and nose area of the user to be covered by the air curtain.
- mouth and nose area of the user is used in the context of the invention to describe the area of a user's face that extends between the user's mouth and nose and includes the user's mouth.
- the mouth and nose area is preferably essentially triangular, the mouth defining an underside of the mouth and nose area and the nose defining the tip of the essentially triangular mouth and nose area.
- the mouth-nose area is preferably larger than the area between the mouth and nose. In other words, the mouth-nose area projects beyond the actual area between the mouth and nose and extends, for example, upwards to the tip of the nose.
- the mouth-nose area projects over the mouth downwards and to the right and left, for example by a length of 2 cm each.
- the air curtain which is formed by the at least one nozzle, is preferably also essentially triangular, the shape of the air curtain being of an opening angle.
- kel gamma in the area of the nozzle of the device.
- This opening angle can for example be in a range of 90 degrees, the opening angle between two outer air jets or marginal jets of the air curtain being measured.
- An opening angle gamma / 2 is preferably defined between a virtual axis running centrally through the face of the user and one of the two outer air jets of the air curtain, with half the opening angle gamma / 2 preferably being in a range from 0 to 45 degrees.
- the air curtain is preferably formed by an air flow generated by the pump of the protective device.
- air denotes a gas mixture which in particular comprises nitrogen N2 and oxygen O2, as well as various other gases and gas mixtures.
- the air is preferably sucked in by the pump from the surroundings of the user and passed on to the nozzle via conduits such as an air hose.
- the carrying device is a protective helmet or protective goggles. If the carrying device of the protective device is designed as protective goggles or a hard hat, the pump is preferably arranged on a rear side of the protective device, which is preferably arranged on the back of the user's head.
- the carrying device preferably forms the basic structure for the protective device, it being possible for the various components of the protective device to be attached to the carrying device.
- the pump is preferably set up to convey and discharge air essentially without pulsation, so that a laminar flow is advantageously formed, which forms the air curtain.
- the pump is preferably adapted to the at least one nozzle or the nozzle arrangement or its geometry with regard to the volume flow that is required for generating the air curtain.
- the volume flow of the pump can be designed to match the nozzle or the nozzle arrangement. It is very particularly preferred in the context of the invention that the pump is set up to overcome the negative pressure that prevails in a filter of the protective device. In particular, it is preferred within the meaning of the invention that the pump ensures an essentially pulsation-free air flow due to its functional principle.
- piezo pumps can be used which operate at frequencies in a range from 30 to 40 kHz, preferably at a frequency of approximately 35 kHz.
- frequencies greater than 500 Hz are particularly preferred: f> 500 Hz.
- frequencies of 1000 Hz 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 10 kHz , 15 kHz, 20 kHz, 25 kHz or 45 kHz, 50 kHz, 55 kHz, 60 kHz etc.
- 1000 Hz 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 10 kHz , 15 kHz, 20
- frequencies of the piezo pump in a range from 500 Hz to 500 kHz can be preferred, preferably in a range from 1 kHz to 100 kHz, particularly preferably in a range from 10 kHz to 80 kHz and most preferably in a range from 30 to 40 kHz .
- rotary vane pumps can be used, which also work essentially pulsation-free.
- a speed within the air flow is not selected too high in order to prevent eddies and turbulent flows from being generated.
- the nozzle is adapted to the volume flow of the pump.
- the pump is operated with a volume flow in a range from 1.0 to 1.5 l / min, a volume flow of 1.2 l / min is particularly preferred.
- This preferred volume flow can preferably be combined with a flow velocity in a range of 1-2 m / s. This combination of flow velocity and volume flow advantageously achieves a laminar air flow.
- a nozzle geometry is set up so that the air flow is fanned out as widely as possible.
- the pump is preferably used to provide air for generating the air curtain.
- Rotary vane pumps or piezo pumps in particular can be used for this purpose.
- Piezo pumps in particular are particularly inexpensive and have a low weight.
- the user of the protective device for example the wearer of protective goggles or the protective helmet, breathes through the air curtain.
- the fine dust or harmful particles are preferably deflected by the air curtain, which is preferably fast flowing. It is preferred within the meaning of the invention that a speed of the air flow or air curtain in the area in front of the user's nose of the protective device is approximately 2 m / s and in the area in front of the user's mouth is approximately 1 m / s .
- the flow speed depends on the speed at which at least part of the air flow or the air curtain is sucked in from the mouth or nose of the user. Due to the different flow cross-sections of the mouth and nose, different flow speeds can be generated in the air flow or in the air curtain in front of the mouth or in front of the nose of the user.
- the air does not experience any resistance in the context of the present invention, so that the inhalation resistance of the user of the protective device is not increased.
- the wearer of the protective goggles or the protective helmet can inhale and exhale equally or at least as well as without the protective device.
- the protective goggles or the protective helmet advantageously prevent dust or harmful particles from entering from above.
- the air curtain covers a large area of the lower half of the user's face.
- a mouth-nose area of the user can be defined, which preferably has a triangular basic shape and is a little larger than the area that is spanned by the mouth and nose.
- the protective device preferably ensures that the mouth and nose area is covered with the air curtain regardless of whether external, possibly disruptive air currents or movements are present.
- Such an optimal cover can in particular be made possible by the synergistic interaction of the pump and at least one nozzle or nozzle arrangement. It is a particular merit of the invention that the protective device prevents the inhalation of dust and harmful particles particularly effectively, regardless of whether the wearer of the protective goggles or the protective helmet has a beard and / or glasses.
- the air curtain is preferably formed by the at least one nozzle.
- an air flow that is defined by an opening angle ⁇ is particularly preferred.
- the shape of the air curtain can in particular be determined by the geometry of the at least one nozzle.
- it can also be preferred that the function of the nozzle is performed by a nozzle arrangement.
- the nozzle arrangement can preferably comprise two or more nozzles, the individual nozzles being arranged in particular in the area of a nose of the user of the protective device. Preferred nozzle arrangements are shown in particular in the accompanying figures.
- other components of the protective device can also contribute.
- the flow can be guided over components of protective goggles if the carrying device is formed by protective goggles.
- the nozzle or the nozzle arrangement is preferably set up to generate or shape a laminar flow for generating the air curtain. It has advantageously been shown that the nozzles in the context of the present invention operate particularly loss-free.
- the nozzle or the nozzle arrangement advantageously enables essentially complete coverage of the lower half of the face or the mouth and nose area of the user of the protective device. This essentially complete coverage is made possible in particular by the shape of the air curtain provided by the nozzle or the nozzle arrangement, which depends largely on the positioning of the nozzles or the arrangement of the nozzles within the protective device. is influenced.
- two nozzles can be provided on the protective device, the two nozzles being arranged on the right and left under protective goggles integrated in a helmet of the protective device.
- the at least one nozzle or the nozzle arrangement is at a distance d from a face of the user, the distance d in a range from 2 to 30 mm, preferably 5 to 20 mm and particularly preferably at 10 mm.
- this distance is approximately 1 cm.
- the term “distance” preferably denotes a shortest distance between the tip of the nose of the user of the protective device and the nozzle or the nozzle arrangement. The preferred spacing advantageously minimizes turbulence, as tests have shown.
- the at least one nozzle or the nozzle arrangement is preferably set up to emit an air stream at an angle alpha, the angle alpha being in a range from 10 to 30 degrees.
- the angle alpha is preferably measured starting from a vertical axis. This can be the vertical virtual axis, preferably running centrally through the face of the user, which conceptually divides the face of the user into two halves and which is used, for example, to determine the opening angle ⁇ / 2.
- the nozzle or the nozzle arrangement is inclined in the direction of the user's face.
- the nozzle or the nozzle arrangement of the protective device can be directed towards a chest or stomach of the user, so that the air flow generated, which forms the air curtain, is, for example, at a distance of 1 to 3 cm in front of the user's chin running.
- a preferred course of the air flow, as well as the distance d and the angle of inclination al pha are shown in FIG. 1, for example.
- the setting of the angle alpha in combination with the above-mentioned distance between the nozzle or nozzle arrangement and the tip of the nose of the user leads to an optimal vortex behavior within the air flow.
- this preferably means that turbulence can be minimized if a distance d is, for example, 1 cm and the angle alpha is set between 10 and 30 degrees.
- the mentioned angles and distances can be selected and / or varied in particular as a function of the head shape of a user of the protective device.
- the device comprises two nozzles, which preferably form a nozzle arrangement.
- the nozzles preferably enclose an angle beta with one another, the angle beta being in a range from 0 to 10 degrees.
- the magnitude of the angles in relation to the two nozzles is in a range from 0 to 10 degrees, the signs for the angles of inclination of the two nozzles preferably being opposite.
- the air curtain which preferably covers the entire nose and mouth area of the user, is achieved in particular through the clever arrangement of the nozzle arrangement in relation to a face of the user. This arrangement is characterized in particular by the angles alpha, beta and delta.
- the nozzles are inclined in relation to the vertical virtual axis, preferably running centrally through the face of the user, which conceptually divides the face of the user into two halves.
- the nozzles are preferably arranged to the right and left of this vertical axis, the nozzles being designed to be inclined, in particular in a front or front view of the face of the user or the invention.
- the two nozzles are preferably tilted in relation to the virtual, vertical axis, the nozzles preferably being able to be tilted as shown in FIG.
- a first nozzle can be arranged in front of a left half of the user's face, while a second nozzle of the nozzle arrangement is arranged in front of a right half of the user's face.
- the terms “right” and “left” refer preferably to the virtual vertical axis corresponding to a front view of a face of a user of the protective device. Such a front view of the invention is shown, for example, in FIG.
- the terms “above” and “below” in the context of the present invention can be understood to mean that the chin forms a lower area of the user's face, while the upper part of the face is usually covered with hair.
- the two nozzles of the nozzle arrangement preferably have a smaller distance from the virtual vertical axis in a lower region than in the upper region of the nozzles.
- the two nozzles are arranged like the legs of a letter "V" to one another.
- the angle of inclination beta therefore preferably has a positive sign for one of the two nozzles, while the angle of inclination beta has a negative sign for the other nozzle of the nozzle arrangement.
- the amounts of the angle of inclination for the first nozzle and for the second nozzle are preferably the same or essentially the same.
- Each of the two nozzles of the nozzle arrangement preferably produces its own air curtain.
- the two separate individual air curtains are preferably superimposed to form an overall air curtain which preferably covers the entire mouth and nose area of the user of the protective device.
- an overlap of the air curtains is preferably achieved in the middle of the user's face.
- the resulting overall air curtain, or the underlying air flow, is therefore particularly strong in the area below the nostrils.
- the two nozzles preferably stretch an air curtain with an opening angle of gamma less than or equal to 90 degrees. With this opening angle, complete coverage of the mouth and the area below the nose of a user is advantageously achieved by the overall air curtain.
- the nozzles enclose an angle delta with a vertical plane, the angle delta being in a range from 10 to 30 degrees.
- the vertical plane can preferably include the vertical virtual axis, preferably running centrally through the face of the user, and can be formed essentially parallel to a face plane of the user.
- the inclined nozzles can preferably follow the course of the nostrils, as shown in FIG.
- the angle delta is preferably formed between the nozzles and the vertical plane, the amounts of the angles of inclination for the first and second nozzles being essentially the same, while the signs of the angles of inclination for the two nozzles are preferably opposite.
- the nozzles are preferably also arranged in a V-shape in a top view from above (see FIG. 5), the opening of the letter “V” pointing towards the user's face, while the tip of the letter “V” points towards the user points away.
- the inclined position of the nozzle in particular, an improved covering of the face with the air curtain is achieved. This advantageously prevents dust particles from being inhaled by the user past the curtain.
- the device preferably comprises a filter for cleaning the air which is sucked in by the protective device in order to generate the air flow for generating the air curtain.
- the protective device When using the protective device it can happen that part of the air curtain is inhaled by the user. In order to ensure that no dust or harmful particles are inhaled, it is preferred in the context of the invention that the air that is sucked in is filtered.
- the filter of the protective device is preferably arranged on a rear side of the device, so that the filter is arranged in the region of the back of the user's head. With the Providing the filter, the pump of the protective device and its mechanics are advantageously protected from contamination and damage.
- filters of filter class H13 or HEPA For the purposes of the invention, it may be preferred to use filters of filter class H13 or HEPA.
- the working time with the filter can preferably be extended if a filter with a high degree of separation is used.
- the protective device comprises a unit for monitoring a function of the device.
- this unit is preferably also referred to as a function monitoring unit.
- the function monitoring unit works electronically.
- the function monitoring unit can preferably be part of a control unit of the proposed protection device.
- the function monitoring unit preferably fulfills the requirements for a warning device, some of which are required by law in order to determine that a respiratory protective device or the protective device has failed or is malfunctioning.
- the function monitoring unit can preferably carry out volume flow monitoring, it being possible for such volume flow monitoring in connection with the air curtain to be difficult.
- a differential pressure between the filter housing and the environment or environment of the user is monitored.
- the function monitoring unit is set up to monitor a differential pressure between the protective device and the user's surroundings.
- the function monitoring unit can preferably also be used to monitor a filter state of the filter of the protective device.
- the function monitoring unit is able to characterize or recognize the filter used. It is also provided that the function monitoring unit can determine a pressure drop through the filter in an unused and possibly a blocked or clogged state. In particular, the function monitoring unit has means with which the determined values can be compared with one another. In the event that a pressure difference is measured that lies, for example, between the value “zero” and the pressure difference value measured for a new, unused filter, there may be a fault in the pump and / or in the power supply.
- Such a measurement result can also be understood to mean that there is a leak in the protective device or its line means. If a determined pressure difference is between a first value, which was measured for a new, unused filter, and a second value, which was measured for a clogged state, an im Substantially fault-free functioning of the protective device can be assumed. If the differential pressure value is above a certain limit, the filter may be clogged and should be replaced. In order to measure the differential pressure in the context of the proposed function monitoring, differential pressure sensors in particular can be used.
- the protective device preferably comprises an energy supply device for providing energy for the components of the device.
- This can preferably be a current and / or voltage source.
- the energy supply device is preferably set up to supply the protective device with sufficient electrical energy to operate the components, such as the pump, the nozzles, the filter and / or the function monitoring unit.
- the energy supply device can be formed, for example, by a battery or one or more accumulators. For example, rechargeable batteries with a voltage of 12 volts can be used in the context of the present invention.
- the filter of the protective device can preferably be placed on the back of the user's head. This is associated with the advantage that the air at the back of the user's head is often cleaner than the air in front of the user's face, this area often coinciding with the user's work area.
- the function monitoring unit works preferably based on a differential pressure measurement. It can for example be arranged in a filter box inside the protective device. It is preferred in the sense that the energy supply device is arranged as deep as possible within the protective device.
- the protective device can preferably also comprise a power supply device which, for example, can be coupled to the pump of the protective device.
- the power supply device and / or the pump of the protective device are preferably also arranged as deep as possible within the device. In one embodiment of the invention it can be preferred that the power supply device and / or the pump are arranged opposite the accumulators for the purpose of weight compensation.
- the protective device has means to convert the DC voltage preferably output by the accumulators into an alternating to convert selvoltage that is required for the operation of piezo pumps.
- the power supply device of the protective device is preferably set up to change the voltage output by the accumulator so that it can be used to operate the piezo pumps when piezo pumps are used as pumps.
- FIG. 1 side view of a preferred embodiment of the invention
- FIG. 2 front view of a preferred embodiment of the invention
- FIG. 3 shows a schematic side view of a preferred embodiment of the invention
- FIG. 5 plan view of a preferred embodiment of the invention
- FIG. 1 shows a preferred embodiment of a proposed protective device (1).
- a carrying device (10) is shown, which can in particular be designed as protective goggles (8).
- the carrying device (10) carries a nozzle (5) or a nozzle arrangement (5), the nozzle (5) or the nozzle arrangement (5) being set up to provide an air curtain (2) in front of the Ge view (3) of a user of the protective device (1) to shape.
- the nozzle (5) or the nozzle arrangement (5) is preferably inclined in the sense that it has a smaller distance d to the face (3) of the user in a lower area than in an upper area. In other words, the nozzle (5) or the nozzle arrangement (5) can be tilted with a lower area in the direction of the face (3) of the user. This tilting or inclination of the nozzle (5) or the nozzle arrangement (5) is described by the angle of inclination alpha, which is preferably in a range from 10 to 30 degrees.
- Figure 2 shows a front view of a preferred embodiment of the proposed protective device (1).
- the preferred embodiment of the protective device shown in FIG. 1 is a front view of a preferred embodiment of the proposed protective device (1).
- the preferred embodiment of the protective device shown in FIG. 1 is a preferred embodiment of the proposed protective device (1).
- (1) is designed as protective goggles (8), the nozzle arrangement (5) preferably being arranged below the spectacle lenses or below a transition area between the spectacle lens sections.
- a vertical conceptual axis (9) which divides the face (3) of the user into two halves of the face also preferably runs through this central area of the protective goggles (8).
- FIG. 2 shows a nozzle arrangement (5) which comprises two individual nozzles (5a, 5b).
- the first individual nozzle (5a) can for example be arranged on the left half of the face in relation to a vertical virtual axis (9), while a second individual nozzle (5b) is arranged on the right half of the user's face in relation to the vertical virtual axis (9) lies.
- the two individual nozzles (5a, 5b) are inclined with respect to the vertical virtual axis (9), the two individual nozzles (5a, 5b) preferably being arranged axially symmetrically.
- the vertical virtual axis (9) can preferably function as an axis of symmetry.
- the inclination of the two individual nozzles (5a, 5b) is expressed, for example, in that the individual nozzles (5a, 5b) are at a smaller distance from the vertical virtual axis (9) in a lower area than in an upper area.
- the inclination of the two individual nozzles (5a, 5b) is preferably described by the angle of inclination beta, the angle beta being in a range from 0 to 10 degrees.
- the individual nozzles (5a, 5b) each emit an air curtain (2), the two air curtains
- the outer marginal rays of the air curtain (2) go from the outlets of the nozzles (5) and stretch the preferably triangular out air curtain (2).
- the outer edge rays of the air curtain (2) run preferably symmetrically to one another, the vertical virtual axis (9) preferably acting as an axis of symmetry.
- the size of the air curtain (2) spanned by the outer marginal rays is determined by the opening angle gamma, the angle gamma corresponding to the entire opening angle that is closed by the two outer marginal rays of the air curtain (2).
- the vertical virtual axis (9) divides the opening angle ⁇ preferably into two halves of equal size, each of which has the amount “ ⁇ / 2”.
- the “half opening angle ⁇ / 2” extends between the vertical virtual axis (9) and one of the outer edge rays of the air curtain (2).
- FIG. 3 shows a schematic side view of a preferred embodiment of the protective device (1).
- the preferred embodiment of the protective device (1) shown in FIG. 3 can be designed as a protective helmet, the protective helmet being set up to be worn by a worker during work.
- a nozzle (5) or a nozzle arrangement (5) is shown which is set up to generate an air curtain (2) in front of the face (3) of a wearer of the protective device (1).
- the air flow with which the air curtain (2) is generated preferably comes from a pump (4) which, in the preferred embodiment of the invention shown in FIG. 3, can be attached to the helmet of the protective device (1).
- the pump (4) can also be arranged at other locations within the device (1).
- the pump (4) is preferably connected to the nozzle (5) or the nozzle arrangement (5) by means of conduits, so that the air flow generated by the pump (4) is sent to the nozzle (5) or the nozzle arrangement (5) ) can be forwarded.
- the power means can preferably be designed as air hoses.
- the pump (4) can also be connected to a filter (6) by line means. The air sucked in by the pump (4) can be cleaned with the filter (6) before it is blown as an air curtain (2) into the mouth and nose area of the user. The air cleaned by the filter preferably also extends the running time of the proposed protective device (1), since the mechanics of the pump (4) are spared by filtering the air.
- the pump (4) is supplied with electrical energy by an energy supply device (1 1).
- the energy supply device (1 1) and the filter (6) can preferably be connected to a function monitoring unit (7), the function monitoring unit (7) preferably is directed to monitor the components of the device (1) with regard to their functionality and, if necessary, to control them.
- FIG. 4 shows a schematic side view of a further preferred embodiment of the protective device (1).
- the exemplary embodiment shown in FIG. 4 represents protective goggles (8) that the user wears in front of their eyes.
- the nozzle (5) or the nozzle arrangement (5) with which the air flow can be blown into the mouth and nose area of the user to generate the air curtain (2) is arranged below the spectacle lenses.
- Further components of the protective device (1) can be arranged on a rear side of the user's head. If the protective device (1) - as in FIG.
- the device (1) can comprise a belt, which is formed, for example, from an elastic band, around the (rear) head of the user is placed or guided and there includes the other components of the protective device (1), while the front part of the protective device (1) is formed by the protective goggles (8).
- the other components of the protective device (1) which can be arranged in the area of the back of the user's head, for example, can be the pump (4), the energy supply device (1 1), the filter (6) and / or the Act function monitoring unit (7).
- FIG. 5 shows the top view of a preferred embodiment of the protective device (1), that is to say a representation of the invention from above.
- the exemplary embodiment of the protective device (1) shown in FIG. 5 is designed as protective goggles (8).
- a vertical plane (not shown) can be established through the glasses of the protective goggles (8), which is essentially parallel to a face of the user.
- the two nozzles (5a, 5b) of the nozzle arrangement (5) of the illustratedrawsbei game of the invention can be inclined to this vertical plane and, for example, be arranged like the legs of a letter "V".
- the tip of the letter “V”, which is formed by the two individual nozzles (5a, 5b), preferably points away from the user, while the opening of the letter “V” points towards the face (3) of the user.
- the nozzles (5a, 5b) preferably follow the course of the user's nostrils.
- the inclination of the nozzles (5a, 5b) of the nozzle arrangement (5) can be described by the angle delta which is enclosed by the vertical virtual plane and the nozzles (5a, 5b).
- the angles for the two nozzles (5a, 5b) preferably correspond in terms of their amount and are opposite in terms of their sign. In other words, one nozzle (for example 5a) has a positive angle of inclination delta, while the other nozzle (for example 5b) has a negative angle of inclination delta, or vice versa.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Biomedical Technology (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Otolaryngology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19167199.9A EP3718605A1 (de) | 2019-04-04 | 2019-04-04 | Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers |
| PCT/EP2020/057952 WO2020200874A1 (de) | 2019-04-04 | 2020-03-23 | Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3946644A1 true EP3946644A1 (de) | 2022-02-09 |
Family
ID=66092118
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19167199.9A Withdrawn EP3718605A1 (de) | 2019-04-04 | 2019-04-04 | Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers |
| EP20712572.5A Withdrawn EP3946644A1 (de) | 2019-04-04 | 2020-03-23 | Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19167199.9A Withdrawn EP3718605A1 (de) | 2019-04-04 | 2019-04-04 | Vorrichtung zur erzeugung eines luftvorhangs vor einem gesicht eines nutzers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220143430A1 (de) |
| EP (2) | EP3718605A1 (de) |
| CN (1) | CN113453766B (de) |
| WO (1) | WO2020200874A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220040508A1 (en) * | 2020-08-05 | 2022-02-10 | University Of Maryland, College Park | Wearable air cleaning device |
| DE102020122971A1 (de) | 2020-09-02 | 2022-03-03 | Marcel Poalelungi | Schutzmaske mit Luftvorhang |
| CN112426639A (zh) * | 2020-11-27 | 2021-03-02 | 湖南大学 | 一种可佩戴式防护口鼻的微型气幕系统 |
| US20220265407A1 (en) * | 2021-02-15 | 2022-08-25 | Donaldson Company, Inc. | Arrangements for capturing aerosol during dental procedures and methods |
| DE102024123362A1 (de) * | 2024-08-15 | 2026-02-19 | Ec Eichhorst Consulting Gmbh | Vorrichtung zur Anwendung als Atem-Schutzausrüstung |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE835635C (de) * | 1945-11-01 | 1952-04-03 | Marinus Christensen | An die Stirn festschnallbare Vorrichtung zum Schutze des Gesichts gegen giftige Gaseund Staub |
| GB622486A (en) * | 1946-08-23 | 1949-05-03 | Marinus Christensen | Protective device against poisonous gases and dust for factory and like workers |
| GB835200A (en) * | 1957-12-04 | 1960-05-18 | Leo Baer | Breathing protector |
| US3881478A (en) * | 1974-06-13 | 1975-05-06 | Donaldson Co Inc | Hard hat air curtain |
| GB2032284B (en) * | 1978-10-02 | 1982-11-10 | Racal Safety Ltd | Breathing apparatus |
| GB9027677D0 (en) * | 1990-12-20 | 1991-02-13 | Coal Industry Patents Ltd | Improvements in or relating to powered helmet respirators |
| CA2184638A1 (en) * | 1995-11-16 | 1997-05-17 | Mark Tilden | Face covering |
| GB2404841B (en) * | 2003-08-14 | 2006-11-15 | Npf Ltd | Goggles |
| JP4934750B1 (ja) * | 2011-05-31 | 2012-05-16 | 株式会社メトラン | ポンプユニット、呼吸補助装置 |
| CN102907811B (zh) * | 2012-11-07 | 2015-12-09 | 中国矿业大学 | 一种空气幕防尘头盔及方法 |
| SG2013097183A (en) * | 2013-12-31 | 2015-07-30 | Singapore Tech Dynamics Pte | Respiratory devices |
| CN203943116U (zh) * | 2014-05-14 | 2014-11-19 | 周升忠 | 健康口罩 |
| EP3226981B2 (de) * | 2014-12-04 | 2025-06-25 | ResMed Pty Ltd | Wearable-vorrichtung zur zufuhr von luft |
| CN107106880A (zh) * | 2014-12-19 | 2017-08-29 | 皇家飞利浦有限公司 | 可穿戴空气净化设备 |
| WO2017065620A1 (en) * | 2015-10-15 | 2017-04-20 | Clear Air Technology Limited | A respirator |
| DE102015122316A1 (de) * | 2015-12-18 | 2017-06-22 | Alfred Kärcher Gmbh & Co. Kg | Tragbares individuelles Luftreinigungssystem |
| KR101930144B1 (ko) * | 2015-12-29 | 2018-12-18 | 한가현 | 에어커튼을 이용한 유해물질 차단형 보건 마스크 |
| CN106823181A (zh) * | 2017-01-20 | 2017-06-13 | 苏州倍安电子科技有限公司 | 头戴式防病毒呼吸器 |
| CN111065430B (zh) * | 2017-08-22 | 2023-03-07 | 皇家飞利浦有限公司 | 呼吸面罩及面罩控制方法 |
| CN207252850U (zh) * | 2017-09-28 | 2018-04-20 | 陈亦昕 | 一种空气帘喷嘴结构及无形口罩 |
-
2019
- 2019-04-04 EP EP19167199.9A patent/EP3718605A1/de not_active Withdrawn
-
2020
- 2020-03-23 EP EP20712572.5A patent/EP3946644A1/de not_active Withdrawn
- 2020-03-23 WO PCT/EP2020/057952 patent/WO2020200874A1/de not_active Ceased
- 2020-03-23 US US17/437,497 patent/US20220143430A1/en not_active Abandoned
- 2020-03-23 CN CN202080014211.4A patent/CN113453766B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| ANONYMOUS: "Atemminutenvolumen - Wikipedia", 19 April 2025 (2025-04-19), de.Wikipedia.org, XP093271908, Retrieved from the Internet <URL:https://de.wikipedia.org/wiki/Atemminutenvolumen> * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020200874A1 (de) | 2020-10-08 |
| CN113453766B (zh) | 2022-08-23 |
| US20220143430A1 (en) | 2022-05-12 |
| EP3718605A1 (de) | 2020-10-07 |
| CN113453766A (zh) | 2021-09-28 |
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