CN105664390B

CN105664390B - Breathing container for a circuit-breathing protective device and circuit-breathing protective device

Info

Publication number: CN105664390B
Application number: CN201510877860.8A
Authority: CN
Inventors: C.威廉; J.昂格; D.奇斯曼
Original assignee: Draeger Safety AG and Co KGaA
Current assignee: Draeger Safety AG and Co KGaA
Priority date: 2014-12-05
Filing date: 2015-12-04
Publication date: 2020-03-17
Anticipated expiration: 2035-12-04
Also published as: CN105664390A; DE102014017954B4; DE102014017954A1

Abstract

A breathing container for a circuit-breathing protective device and a circuit-breathing protective device. The invention relates to a breathing container (1) for a circuit-breathing protective device (100), having a container (2) with a dimensionally stable container body (3) and an opening (4) in the container body (3), wherein a device for removing CO during the circuit of the circuit-breathing protective device (100) is present in the container body (3)₂And an outlet opening (6) for discharging the contained breathing air back into the circuit of the circuit-breathing protective device (100); a gas-tight membrane (7) that covers the opening (4) of the container body (3) in a gas-tight manner, wherein the membrane (7) is flexible in such a way that it arches into the interior of the container body (3) in an inhalation state (E) and out of the interior of the container body (3) in an exhalation state (A); wherein in an inhalation state (E) breathing air flows out of the interior of the container (2) through the outlet opening (6) and in an exhalation state (A) is purged of CO₂Flows into the interior of the container (2) through the inlet opening (5). The invention further relates to a circuit-respiratory protection device (100) having at least one such breathing container (1).

Description

Breathing container for a circuit-breathing protective device and circuit-breathing protective device

Technical Field

The invention relates to a breathing container (Gegenlunge) for a circuit-breathing protective device and a circuit-breathing protective device.

Background

Respiratory protection devices are devices that are applied for respiratory protection, i.e. to provide protection against materials, particles or organisms that can reach the body via the respiratory tract. A respiratory protection device that does not rely on return air is a device that isolates the user of the device from the ambient atmosphere and supplies breathable gas from a separate source. In particular, there are two types of respiratory protection devices that are portable and do not rely on return air. On the one hand, container devices exist in which the breathing air is carried around in compressed air bottles. Such devices are therefore also referred to as compressed gas ventilators (presslufatmers). On the other hand, there are cyclic respiratory protection devices, also called regeneration devices. In contrast to container devices, circulation-respiratory protection devices do not provide a complete supply of air for inhalation, but rather they have an added source of oxygen. The oxygen source can be an oxygen cylinder, liquid oxygen, or combined oxygen. Thereby, exhaled carbon dioxide can be combined in the carbon dioxide filter and consumed oxygen can be replenished from the bottle.

In order to provide breathing air in stationary devices, for example stationary artificial respiration or anesthesia apparatuses, and in mobile applications, for example circulatory respiratory protection apparatuses, so-called breathing containers in the form of breathing bags are used. By blowing in gas, the breathing bag can be inflated until it contains the maximum gas volume under structural conditions. The breathing bag contains a state of maximum gas volume under its structural conditions, hereinafter called the exhalation state. By letting out gas, the breathing bag can be deflated until it contains a minimum gas volume, which in the ideal special case is 0L. The breathing bag contains a state of minimum gas volume under its structural conditions, hereinafter referred to as inhalation state.

The breathing container or the breathing bag has at least one channel means and is preferably designed to be gas-tight. A real ambient pressure or a slight overpressure of breathing air is provided in the breathing bag. When the breathing bag is used in a toxic environment, the overpressure is particularly advantageous, so that no foreign bodies, in particular no toxic substances, can penetrate into the breathing bag from the outside when the breathing bag is damaged.

Depending on the field of application of the breathing container or breathing bag, different requirements are placed on the breathing container or breathing bag. Thus, there are a large number of differently configured breathing bags.

Breathing bags are known which are constructed substantially flat and have two flexible wall elements, the edge regions of which are connected to one another, for example by gluing, welding, vulcanization or stitching. Such a breathing bag can be manufactured easily and relatively cost-effectively. A disadvantage of such breathing bags is that in the first state, i.e. in the maximally inflated state, they have a substantially elliptical cross section and therefore often do not make optimal use of the receiving volume of the interior of the housing for receiving the breathing bag. This is used in particular in cases in which the housing does not have dimensions that are significantly smaller than the two other dimensions. Thus, the breathing bag is not suitable for optimally utilizing the containment volume. Furthermore, such a breathing bag has the disadvantage that in the second state, i.e. when the volume of gas contained in the breathing bag reaches a minimum, the two wall elements can adhere to one another by adhesive forces, for example due to humidity. This leads to an increase in resistance when filling the breathing bag and in the extreme case to damage of the wall element.

Furthermore, a breathing bag constructed substantially as a bellows (Faltenbalg) is disclosed. Such breathing bags often have either a circular or rectangular cross-section. In a special variant, which is prevalent in stationary devices, for example in medical engineering, such a breathing bag has a foldable base body made of an elastomer and a (partially fixed) base and cover, wherein the base body is bounded on both sides by the base and is constructed to be much stiffer than the base body. The cover and the base have a maximum distance from each other in the first state and a minimum distance from each other in the second state. Such a breathing bag has the disadvantage that it has a relatively long seam or seal which is easily damaged. Breathing bags with a cylindrical base surface only partially use the receiving volume of a housing with a rectangular base surface, which is used, for example, in the respiratory protection devices of fire brigades. Furthermore, due to the elastomeric material, the elasticity of the matrix is strongly temperature-dependent, thereby strongly limiting the feasibility of the use of the breathing bag. Without additional means for generating an overpressure, the breathing bag is therefore unsuitable, in particular in applications in which extreme ambient temperatures are present, for example in a fire. The material properties of the elastomer thus change at extreme temperatures. At cold, the elastomeric material hardens, while at very warm the elastomeric material softens. A change in the properties of the material of the elastomer thus adversely affects the breathing resistance of a user of the breathing protective device with bellows.

Further known embodiments of breathing bags have a substantially hose-like or rectangular parallelepiped-like breathing bag with a plurality of flexible walls. The breathing bag is arranged between two pressure plates on the longitudinal side, wherein one pressure plate is tensioned against the breathing bag by means of a steel spring pair and thereby exerts a pressing force against the breathing bag in the direction of the other pressure plate. The pressure plates have a maximum distance from each other in a first state and a minimum distance from each other in a second state, wherein the respiration bag is corrugated during the transition from the first state to the second state. The wall of the breathing bag thus has a fold without a fixed shape or an irregular fold in the second state.

Such breathing bags have a complex shape and are expensive and costly to manufacture. In particular, a large input of manpower is required for the manufacture. Furthermore, there is a high risk of leaks occurring at the seams. Furthermore, such breathing bags have the disadvantage that they require relatively complex additional mechanisms, such as spring devices, control arms or plates, and thus require a large space requirement. The receiving volume for receiving the breathing bag in the interior of the housing is therefore not optimally utilized, since the space requirement of the additional means is relatively large compared to the space requirement of the breathing bag. This is disadvantageous in particular in applications which require a displacement of the housing with the smallest possible accommodation volume, for example respiratory protection devices of fire brigades. A further disadvantage is that the respiration bag is relatively poorly protected against external influences at several outer sides and is therefore easily damaged on account of the external influences. Furthermore, it is disadvantageous in such breathing bags that, on account of the complex shape, they can be difficult to fit into or to detach from the mobile breathing protection device.

In all the breathing bags described above, cleaning, sterilization and drying are particularly difficult, in particular because of the tubular or corrugated shape of the application of the breathing bag inside the mobile breathing apparatus.

Disclosure of Invention

Starting from this prior art, the object of the present invention is to provide a breathing container for a circuit-breathing protective device which at least partially eliminates the disadvantages described above and a breathing protective device having a breathing container. The object of the present invention is, in particular, to provide a breathing container for a circuit-breathing protective device and a circuit-breathing protective device therefore, which can be cleaned in a particularly simple manner and at the same time can be produced in a robust and cost-effective manner.

The aforementioned object is achieved by a breathing container for a circuit-breathing protective device having the features according to claim 1 and by a circuit-breathing protective device having the features according to claim 10. Further features and details of the invention emerge from the dependent claims, the description and the drawings. The features and details described in connection with the breathing container according to the invention are of course also applicable in connection with the circuit-breathing protective device according to the invention and vice versa, so that the disclosure with respect to the individual inventive aspects is always or can be referred to one another.

According to a first aspect of the invention, this object is achieved by a respiration container for a circulatory respiratory protection device, having a container with a dimensionally stable container body and an opening in the container body, wherein a container body is present in which a device for removing CO during the circulation of the circulatory respiratory protection device₂And an outlet opening for discharging the contained breathing air back into the circulation of the circulation-respiratory protection device. Furthermore, the breathing container has a gas-tight membrane which covers the opening of the container body in a gas-tight manner, wherein the membrane is flexible in such a way that it arches into the interior of the container body in the inhalation state and out of the interior of the container body in the exhalation state, wherein in the inhalation stateWherein the breathing air flows out of the interior of the container through the outlet opening and wherein the CO is removed in the exhalation state₂Through the inlet opening into the interior of the container.

Such a breathing container can be easily cleaned and at the same time can be produced in a robust and cost-effective manner. The volume of the container of the breathing container can be varied by means of a flexible membrane. The film sealingly covers the container or the opening of the container body. In the inhalation state, the membrane bulges out into the interior of the container body and in the exhalation state the membrane bulges out from the interior of the container body. The container is in particular designed as a hollow cylinder, wherein one end face is closed and the opposite end face forms an opening. In a further preferred embodiment of the breathing container, the container can be formed in the shape of a pot. By the film simply covering the opening of the container body flat, a simple sealing line or sealing edge is obtained, at which the same sealing force is applied all over. Thereby enabling a reduction in potential leakage. The breathing container or the membrane does not require arms or guide elements for moving the membrane between the inhalation state and the exhalation state. In such breathing vessels, a large volume can be achieved in the exhalation phase, while a small volume, which is strongly compressed, can be achieved in the inhalation phase. The breathing vessel is constructed simply using a small number of components.

The container body has an inlet opening and an outlet opening. The inlet opening and the outlet opening are arranged in a wall of the container body, preferably in a lateral wall. The inlet opening is used for the entry of exhaled air, wherein the exhaled air first eliminates CO during the circulation of the circuit-respiratory protection device₂. In order to clean the exhaled air, soda lime is preferably used in the circulation of the circulation-respiratory protection device. Discharge opening in container body for removing CO₂Is guided back into the circuit of the circuit-respirator device, in particular for re-inhalation by the user of the circuit-respirator device. The breathing air present in the container of the breathing container or the containerThe outflow of breathing air can additionally add oxygen.

The wall of the container body and the flexible membrane are configured to be gas-tight, so that breathing air cannot flow out through the wall and the membrane. Furthermore, the film is arranged at the container body in such a way that the film covers the opening of the container body in a gas-tight manner.

Since the breathing container has a dimensionally stable container body and has a flexible membrane only in the region of the opening of the container body, the breathing container can be cleaned easily. The film covers the opening, wherein the film is in contact with the container body only at its edges. In the exhalation state, the membrane is arched out, so that the membrane does not come into contact with the inner wall of the container body up to the edge of the membrane. However, even in the sucked state, the film is not in contact with the bottom of the container body, at most only point-by-point with its center. Thereby completely excluding adhesion of one area of the film to another area of the film. Preferably, the film is stretched in a covering manner in the opening of the container body.

The breathing container can be easily cleaned on the basis of its construction. The breathing container can be sterilized and dried in an equally simple manner. For this purpose, it is merely necessary to introduce cleaning liquid, disinfectant or dry air through the inlet opening and/or the outlet opening and to discharge it out of the interior of the container. In this case, in the disassembled state of the breathing container, i.e. when the breathing container is removed from the circuit of the circuit-respiratory protection device, the interior of the container can be cleaned, sterilized and dried particularly easily.

In such a breathing vessel, in CO₂The water produced during the circulation of the circulation-respiratory protection device during the absorption is not distributed in the container in an uncontrolled manner, but flows, on account of its weight, always in the direction of the lowest point of the container. This enables a simple separation of water from the breathing vessel. Furthermore, it is thereby possible to prevent the air which is then used for inhalation from increasing too much water. That is, the breathing can be performed in the form of a bellows or a flexible hose by such a breathing containerAn unnecessarily high humidification of the breathing air is more easily avoided in the bag.

According to a preferred embodiment of the invention, provision can be made in the breathing container for the membrane to be made of synthetic rubber or of synthetic polymer, in particular silicone. It is particularly preferred that the membrane is constructed from or has predominantly ethylene propylene diene monomer. On the one hand such membranes are gas-tight and on the other hand they can be cleaned simply. This means that a membrane constructed from such a material can be cleaned simply without the membrane losing its properties as a result of the cleaning.

In an advantageous breathing container, it can be provided that the membrane is detachably fastened to the container body, in particular in the region of the opening of the container body, by means of latching and/or clamping elements. By the film being able to be simply detached from the container body, the film can be cleaned, disinfected and/or dried particularly simply. This means that the membrane can be simply detached from the container body for cleaning, disinfection and/or drying, so that not only the inner side of the membrane, but also the inner wall of the container body, which are in contact with the moist breathing air during use of the circulation-respiratory protection device, can be easily reached. In particular, not only the container body but also the membrane is suitable for cleaning in a washing machine, so that a particularly simple and at the same time thorough cleaning, disinfection and also drying of the breathing container can be carried out. A particularly advantageous possibility is for the film to be at the outer side of the container body. Thereby, fixing is made easy.

In particular, a large number of latching and/or clamping elements can be provided. The latching and/or clamping elements can be arranged, for example, at the container body and/or at the edge of the film. In particular, the latching and/or clamping element can be arranged at an outer wall of the container body. The film and the latching and/or clamping element are ideally coordinated with one another in such a way that the edge of the film projects beyond the edge of the container body forming the opening and is fixed in a sealing manner, in particular clamped, to the container body by means of the latching and/or clamping element. The film can have latching and/or clipping elements and complementary mating latching and/or clipping elements can be arranged at the container body. The latching and/or clamping elements desirably tension the film over the opening of the container body.

The membrane is flexible in such a way that it can be moved back and forth between an inhalation state and an exhalation state as a function of the breathing state of a user of the circuit-respiratory protection device using the breathing container. In the inhalation state, the membrane arches into the interior of the container body, and in the exhalation state, the membrane arches out of the interior of the container body.

Particularly advantageous are respiration containers in which the membrane is designed in the shape of a container, in particular a bell or a pot. A membrane constructed in this way is particularly suitable for a breathing container, since it can easily be moved back and forth between an inhalation state and an exhalation state. In other words, such a membrane can be pivoted to the left once and to the right once like a cap, wherein it corresponds or almost corresponds to the exhalation state and the inhalation state. The container-like, in particular bell-shaped or pot-like, structure of the membrane ensures that the membrane automatically jumps or turns into the defined shape, i.e. container-like, in particular pot-like, from a defined deformation path when the membrane is transferred from the exhalation state into the inhalation state or vice versa.

Furthermore, particularly preferred are breathing containers which are constructed thinner towards the center of the membrane than at the edges of the membrane. In particular, the membrane can be advantageously designed in such a way that it has a minimum thickness in its center and, starting from the center, becomes increasingly thicker, in particular constantly, towards the edges. Thereby, the switching from the inhaling state to the exhaling state and the return switching can be carried out relatively easily.

According to a particularly advantageous embodiment of the invention, provision can be made in the breathing container for the dimensionally stable container body to have a first container body part and a second container body part, wherein each container body part has an opening; the container body components being interconnected in fluid communication via a passageway; the gas-tight membrane gas sealCovering the opening of the container body part in a gas-tight manner or providing two gas-tight membranes, wherein the membranes cover the opening in a gas-tight manner; the presence of a first container part for removing CO in the circuit of the circuit-respiratory protection device₂And in that there is an outlet opening in the second container body part for discharging the contained breathing air back into the circuit of the circuit-breathing protective device. The membrane or the two membranes is/are advantageously constructed from synthetic rubber, in particular from ethylene propylene diene monomer rubber, or from synthetic polymers, in particular from silicone. The film or both films are preferably detachably fixed to the container body, in particular in the region of the opening of the container body, via latching and/or clamping elements. When two membranes are provided, a first membrane is fixed in a gas-tight manner to the first container body part and a second membrane is fixed in a gas-tight manner to the second container body part. A breathing container of this design is particularly advantageous, in which, during use in a cycle of the cycle-respiratory protection device, the humidity in the exhaled breathing air is predominantly deposited in the first container body part and accumulates there. This occurs because of the use of the device for purging CO during the cycle of the cyclic respiratory protection device₂Is arranged in the first container body part. Since the outlet opening for the received breathing air which is discharged back into the circuit of the circuit/breathing protection device is present in the second container part, the wetting of the drawn-in air can be at least slightly limited, since the humidity flows only restrictively through the channels which connect the first container part and the second container part to one another in a fluid-communicating manner.

A further advantage of a breathing container of this design is that the membrane or the membrane part can be designed smaller than a large membrane in order to achieve the same container volume. Thereby, the self-flipping property of the membrane, which occurs when the membrane is transferred from the inhalation state to the exhalation state and vice versa, can be enhanced. The self-flipping property in the sense of the present application means that the membrane actively supports the transition to the respective final state of the membrane, i.e. the inhalation state and the exhalation state, on the basis of its thickness and material properties. In particular, during the transition between the two respiratory states, no creasing of the membrane occurs.

Furthermore, provision can advantageously be made in the breathing container for the breathing container to have at least one support frame which spans, in particular is spaced apart from, the opening of the container body; and at least one spring element for applying a spring force to the membrane is located between the support frame and the membrane. The inhalation process, that is to say the switching of the membrane from the exhalation state to the inhalation state, is thereby supported. The spring element, which may be, in particular, a bending spring, such as a disk spring, a helical spring or a leaf spring, is pressed against the outer side of the membrane. One side of the spring is supported at a support frame configured to be not bent. The other side of the spring is supported at the outer side of the membrane. During the transition from the inhalation state to the exhalation state, the spring is clamped against the direction of its spring force, so that the spring, on account of its pretensioning force, can support the opposite transition of the membrane. The spring element is preferably at least positively and/or non-positively fixed to the support frame. The spring element can also be fixed, in particular detachably fixed, to the membrane. For this purpose, for example, receptacles, in particular recesses, projections or the like, can be arranged on the outer side of the membrane facing the support frame. A plurality of support brackets can also be provided. The at least one scaffold desirably extends away across the center of the membrane. However, it is also conceivable that the support does not extend beyond the center of the membrane. The design of the spring element and its arrangement on the support frame are decisive here. The spring element is ideally supported at the support frame in such a way that the direction of the force extends through the center of the membrane. Thereby achieving a uniform inversion of the membrane from the exhale state to the inhale state.

According to a further advantageous embodiment of the invention, it can be provided in the breathing container that the opening of the container body or of the container body part is circular or oval in shape. The membrane can be configured to correspond to the shape of the opening. That is to say, if the opening of the container body or the opening of the container body part is of circular design, the membrane is advantageously also of circular design. The same applies to the oval design of the opening. In particular, the circular design of the opening and of the membrane has the advantage that it changes or flips over in a defined manner when the membrane moves.

According to a particularly advantageous embodiment of the invention, provision can be made in the breathing container for the breathing container to have a cooling device which is arranged at least in regions on the container body of the breathing container. In this way, the heat of the moist exhaled breathing air can be drawn off, so that the breathing air supplied to the user is cooled and is therefore more comfortable for the user. The cooling mechanism is preferably in direct contact with the outer wall of the container body. The cooling means preferably cover the entire outer wall of the container body or at least a large area of the outer wall. Thereby, an efficient cooling of the breathing air in the container of the breathing container is ensured. The cooling means can have, for example, water, a Phase Change Material (PCM) or a similar coolant as a cooling medium.

According to a second aspect of the invention, this object is achieved by a circuit-respiratory protection device having at least one respiratory container constructed according to the first aspect of the invention, in particular according to one of the preceding claims. The same advantages apply to the circuit-respiratory protection device, in particular to the breathing container, as already explained in detail in the breathing container according to the first aspect of the invention. In particular, a circuit-respiratory protection device having such a respiratory container can be cleaned, sterilized and dried in a simple and cost-effective manner and can thus be quickly returned to a fully functional state. The breathing container can be arranged inside the circuit-breathing protective device, that is to say in the housing of the circuit-breathing protective device. Alternatively, the breathing container can also be arranged externally on the circulatory respiratory protection device on the basis of its robustness. In such a configuration of the circuit-respiratory protection device, the breathing container can be reached particularly easily and can be cleaned, disinfected and dried quickly and simply on the basis of its configuration.

The circuit-respiratory protection device preferably also has a device for combining CO in the exhaled respiratory air₂CO of₂An absorber. The CO is₂The absorber preferably has a breath lime tank. Furthermore, the circuit-respiratory protection device preferably has an oxygen reservoir for increasing the O of the exhaled respiratory air₂. Furthermore, there are hose systems and nozzles through which the breathing air is directed to and away from the user. In the cycle of the circulation-respiratory protection device, before the cycle is terminated and led back to the orifice, CO is introduced after the orifice₂An absorber, then a breathing vessel, then an oxygen vessel.

Drawings

Further measures which improve the invention result from the following description of several embodiments of the invention which are shown in the drawing. The features and/or advantages, including the details of construction and the spatial arrangement, which can be found in all the claims, the description or the drawings, can be inventive not only in themselves, but also in different combinations. The figures correspondingly schematically show:

fig. 1 shows a sectional view of a breathing container for a circulatory respiratory protection device, wherein the breathing container is in an exhalation state;

fig. 2 shows a sectional view of the breathing container according to fig. 1, wherein the breathing container is in an inhalation state;

fig. 3 shows a sectional view of the breathing container according to fig. 1, wherein the breathing container additionally has a cooling mechanism;

fig. 4 shows a sectional view of the breathing container according to fig. 2, wherein the breathing container additionally has a cooling mechanism; and the number of the first and second electrodes,

fig. 5 shows a front view of a circuit-respiratory protection device with a breathing container.

Elements having the same function and mode of action are provided with the same reference numerals in fig. 1 to 5, respectively.

Detailed Description

Fig. 1 schematically shows a sectional view of a breathing container 1 for a circuit-breathing protective device 100, whereinThe breathing container 1 is in an exhalation state a, in which CO is purged₂Flows into the interior of the container 2 through the inlet opening 5 in the container body 3. The container 2 has a container body 3 with an opening 4. A gas-tight membrane 7 covers the opening 4 of the container body 3 in a gas-tight manner, wherein the membrane 7 is flexible in such a way that it bulges into the interior of the container body 3 in the inhalation state E and out of the interior of the container body 3 in the exhalation state a. In the inhalation state E, the breathing air flows out of the interior of the container 2 through the outlet opening 6. Via the inlet opening 5 and the outlet opening 6, the breathing container 1 is connected in fluid communication with the circuit of the circuit-respiratory protection device 100. If the user of the circuit-respiratory protection device 100 exhales, the previous CO₂After absorption, the exhaled breathing air passes into the breathing container 1, wherein the membrane 7 passes from the inhalation state E into the exhalation state a. In other words, the interior of the container 2 or of the container body 3 is cleaned with wet CO₂Is filled and the membrane is arched out of the interior of the container body 3.

According to fig. 1 and 2, the breathing container 1 has a particularly dimensionally stable container body 3. The vessel body has a first vessel body part 3a and a second vessel body part 3b, which are connected to each other in a fluid-communicating manner via a channel 18. However, the principle is the same as in only one container body 3. Here, each

container body part

3a, 3b has its own opening 4. Each of the two openings 4 is gas-tightly covered with a membrane 7. In this breathing vessel 1, for the purpose of purging CO during the cycle of the cyclic respiratory protection device 100₂Is arranged in the first container part 3a and an outlet opening 6 for discharging the contained breathing air back into the circuit of the circuit-breathing protective device 100 is located in the second container part 3b. Exhaled air is distributed uniformly in the two

container body parts

3a, 3b via the channels 18, so that in the exhalation state a the two membranes 7 arch out and in the inhalation state E the two membranes 7 arch inwards.

As already explained, fig. 2 shows a breathing container 1 according to fig. 1 in a schematic sectional view, wherein breathing container 1 is now in an inhalation state E in which a user inhales and breathing air thus flows out of the interior of container 2 through outlet opening 6. The negative pressure generated during inhalation causes the membrane 7 to arch inwards into the container body 3. According to fig. 1 and 2, the breathing container 1 additionally has a spring element 10 and a support 9. Between the support frame 9 and the respective one of the membranes 7 a spring element 10 is arranged. In particular, the spring element 10 is supported, particularly preferably fixed, on the support frame 9. The support frame 9 spans the two openings 4 of the

container body parts

3a, 3b of the container body 3 and is arranged spaced apart from the openings 4. The spring element 10 exerts a spring force F on the membrane 7. When the membrane 7 is transferred from the inhalation state E into the exhalation state a, the spring element 10 is compressed counter to the direction of its spring force F. When the membrane 7 is transferred from the exhalation state a into the inhalation state E, the spring element 10 supports the movement of the membrane 7 into the interior of the

container body parts

3a, 3b on the basis of its spring force F.

The spring element 10 is any type of spring. It may be, in particular, a bending spring, for example a disk spring, a helical spring or a leaf spring. The support 9 is configured to be dimensionally stable and is preferably fixed to the container 2 or the container body 3, so that it forms a defined support for the spring element 10.

The membrane 7 is configured to be gas-tight. Furthermore, the film 7 covers the opening 4 of the

container body parts

3a, 3b in a gas-tight manner. For this purpose, the film 7 is fixed, in particular detachably fixed, by means of latching and/or clamping elements 8 at the upper edges of the

container body parts

3a, 3b. In the illustrated breathing container 1, the membrane 7 is in the form of a bell or a pot. This pan-like configuration of the membrane 7 simplifies the switching of the membrane 7 between the inhale state E and the exhale state a. Upon moving from one state to the other, the respective membrane 7 partially independently returns to its initial shape, which is achieved when said membrane 7 reaches the inhalation state E or the exhalation state a.

According to fig. 1 and 2, the breathing container 1 can be easily cleaned and at the same time is robust and can be produced cost-effectively. The volume of the container 2 of the breathing container 1 can be varied simply by means of the flexible membrane 7. The breathing container 1 can therefore be easily cleaned, in particular disinfected and dried, since the membrane 7 can be easily detached from the container body 3 or the

container body parts

3a, 3b. The detachment of the membrane 7 is achieved by the detachment of the latching and/or clamping elements 8. If the membrane 7 is detached from the container body 3 or

container body parts

3a, 3b, the membrane can be cleaned separately from the container body or container body parts. Advantageously, the membrane 7 is made of synthetic rubber, in particular ethylene propylene diene monomer, or of synthetic polymer, in particular silicone. By applying such a material, the membrane 7 can be cleaned even in a washing machine. At the same time, the membranes 7 made of these materials are very durable and durably gas-tight.

In fig. 3 and 4, the breathing container 1 according to fig. 1 and 2 is shown again, wherein a cooling mechanism 11 for cooling moist, warm breathing air is additionally provided in the container 2 of the breathing container 1. The cooling device 11 is in contact with the outer wall of the container body 3 or of the

container body parts

3a, 3b via a fastening plate 19. By means of the cooling device 11, an effective cooling of the breathing air can be achieved in the container 2 of the breathing container 1. The cooling means 11 can have, for example, water, a Phase Change Material (PCM) or a similar coolant as a cooling medium. The optional fastening plate 19 serves not only to hold the breathing container 1, but also to hold the cooling mechanism 11.

Fig. 5 schematically shows a circuit-respiratory protection device 100 with a breathing container 1. The circuit-respiratory protection device 100 has a mouthpiece 15, through which a user can draw in respiratory air from the circuit-respiratory protection device 100 and discharge the used respiratory air. The path of the breathing air through the circuit-breathing protective device 100 is illustrated by the arrow with reference numeral 12. That is, the exhaled breath air flows into the circulation of the circulation-respiratory protection device 100 via the mouthpiece 15 and the inflow conduit 13. The exhaled breath air is first directed through CO with soda lime₂An absorber to eliminate as much as possible the CO of the exhaled breath air₂. Then, CO is purged₂Is supplied to the breathing container 1. The breathing air reaches the container 2 of the breathing container 1 via the inlet opening of the container body part 3b. The breathing air also reaches the container body part 3a via the connecting channel 18. The membrane 7 is turned into the exhalation state a. A large part of the humidity of the breathing air remains in the first container body part 3b. Thereby, a better breathing air can be provided to the user, which in turn is used for inhalation. The breathing air flows back into the circuit of the circuit-breathing protective device 100 via the outlet opening in the container body part 3a. The breathing air can be enriched with oxygen from the oxygen container 17 before it is inhaled by the user of the circulation respiratory protection device 100. The breathing air, optionally enriched with oxygen, is supplied to the mouthpiece 15 and thus to the user via the outflow conduit 14.

A circuit-respiratory protection device 100 having such a breathing container 1 can be cleaned, disinfected and dried simply and cost-effectively and can therefore be quickly returned to a fully functional state again. The breathing container 1 can be arranged inside the circuit-breathing protective device 100 or, due to its robustness, can also be arranged externally on the circuit-breathing protective device 100. In such a configuration of the circuit-respiratory protection device 100, the breathing container 1 can be used particularly well and can be cleaned, sterilized and dried quickly and easily on the basis of its configuration.

List of reference numerals:

1. breathing container

2. Container with a lid

3. Container body

First container body part

Second container body part

4. Opening of the container

5. Access opening

6. Discharge opening

7. Film

8. Latching and/or clamping element

9. Supporting frame

10. Spring element

11. Cooling mechanism

12. Direction of flow of breathing air

13. Respiratory air inflow conduit

14. Respiratory air outflow pipeline

15. Pipe orifice

16. CO₂Absorber

17. Oxygen container

18. Channel

19. Fixing plate

100. Circulation-respiration protection device

A. Calling state

E. Inhalation state

F. A spring force.

Claims

1. Breathing container (1) for a circuit-breathing protective device (100),

having a container (2) with a dimensionally stable container body (3) and an opening (4) in the container body (3), wherein a different opening (4) is present in the container body (3) for removing CO during a cycle of the cyclic respiratory protection device (100)₂And an outlet opening (6) different from the opening (4) for discharging the contained breathing air back into the circulation of the circulation-breathing protection device (100);

having a gas-tight membrane (7) that covers the opening (4) of the container body (3) in a gas-tight manner, wherein the membrane (7) is configured to be flexible in such a way that it arches into the interior of the container body (3) during the negative pressure generated by inhalation in an inhalation state (E) and is purged of CO in an exhalation state (A)₂Is arched out of the interior of the container body (3), wherein the membrane (7) is configured in such a way that itA bell or pot shape and gas-tightly covers the opening (4) during an inhalation state (E) in which respiratory air flows out of the interior of the container (2) through the outlet opening (6) and during an exhalation state (A) in which CO is removed₂Flows into the interior of the container (2) through the inlet opening (5).

2. Breathing vessel (1) according to claim 1, wherein the membrane (7) is constructed of a synthetic polymer.

3. Breathing container (1) according to claim 1 or 2, wherein the membrane (7) is constructed from ethylene propylene diene monomer.

4. Breathing vessel (1) according to claim 1 or 2, wherein the membrane (7) is detachably fixed at the vessel body (3) via a snap-on and/or clamping element (8).

5. Breathing container (1) according to claim 1 or 2, wherein the membrane (7) is configured thinner towards the centre of the membrane than at the edges of the membrane.

6. Breathing vessel (1) according to claim 1 or 2, wherein the shape-stable vessel body (3) has a first vessel body part (3 a) and a second vessel body part (3 b), wherein each vessel body part (3 a, 3 b) has an opening (4), wherein the vessel body parts (3 a, 3 b) are connected to one another in a fluid-communicating manner via a channel (18), wherein the gas-tight membrane (7) covers the openings (4) of the vessel body parts (3 a, 3 b) in a gas-tight manner or wherein two gas-tight membranes (7) are provided, wherein each membrane (7) covers one opening (4) in a gas-tight manner for the CO scavenging in a cycle of the cyclic respiratory protection device (100)₂Of respiratory air intakeAn opening (5) is present in the first container body part (3 a) and a discharge opening (6) for discharging the contained breathing air back into the circuit of the circuit-respiratory protection device (100) is present in the second container body part (3 b).

7. Breathing container (1) according to claim 1 or 2, wherein the breathing container (1) has at least one support frame (9) which spans the opening (4) of the container body (3) and at least one spring element (10) for applying a spring force (F) onto the membrane (7) is located between the support frame (9) and the membrane (7).

8. Breathing container (1) according to claim 1 or 2, wherein the opening (4) of the container body (3) or the opening (4) of the container body part (3 a, 3 b) is circular or oval in shape.

9. Breathing vessel (1) according to claim 1 or 2, characterised in that it has a cooling mechanism (11) which is arranged at least partially at the vessel body (3).

10. Breathing container (1) according to claim 2, wherein the membrane (7) is constructed of synthetic rubber.

11. Breathing container (1) according to claim 4, wherein the membrane (7) is detachably fixed in the region of the opening (4) of the container body (3).

12. Breathing container (1) according to claim 7, wherein the support frame spans the opening (4) of the container body (3) spaced apart from the opening (4).

13. Circulation-respiratory protection device (100) having at least one breathing container (1) according to any of the preceding claims.