EP2374509B1 - Appareil de circuit respiratoire - Google Patents
Appareil de circuit respiratoire Download PDFInfo
- Publication number
- EP2374509B1 EP2374509B1 EP10159309.3A EP10159309A EP2374509B1 EP 2374509 B1 EP2374509 B1 EP 2374509B1 EP 10159309 A EP10159309 A EP 10159309A EP 2374509 B1 EP2374509 B1 EP 2374509B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- respiratory
- circuit device
- cooling element
- deformable wall
- gas
- 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.)
- Active
Links
- 230000000241 respiratory effect Effects 0.000 title claims description 59
- 238000001816 cooling Methods 0.000 claims description 101
- 239000007789 gas Substances 0.000 claims description 86
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910021536 Zeolite Inorganic materials 0.000 claims description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 13
- 239000010457 zeolite Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 131
- 230000003434 inspiratory effect Effects 0.000 description 10
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 4
- 238000005338 heat storage Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/003—Means for influencing the temperature or humidity of the breathing gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/18—Air supply
- B63C11/22—Air supply carried by diver
- B63C11/24—Air supply carried by diver in closed circulation
Definitions
- the present invention relates to a breathing circuit device according to the preamble of claim 1.
- Breathing circuit devices can provide respiratory air or breathing gas to a respirator of the breathing circuit device over a longer period of time.
- the breathing circuit device exhaled by the respiratory expiratory gas by means of a carbon dioxide absorber, the carbon dioxide withdrawn and fed oxygen from an oxygen tank.
- This can of the small in construction and compact breathing circuit device with a small volume of pure oxygen in the oxygen tank over a longer period, eg. B. 4 hours, provided for the respirator breathing gas.
- the carbon dioxide absorber generally contains soda lime or alkali that absorbs the carbon dioxide in the exhaled expiratory gas exhaled by the respirator.
- moisture and heat is released, which leads to a corresponding warming and humidification of the inspiratory gas, because the exhaled by the respiratory expiratory gas is provided in a breathing circuit back to the respiratory carrier as inspiration gas available.
- the breathing circuit device is provided with a cooling element for cooling and thus also for draining the respiratory gas.
- the expiratory gas is cooled and thereby cooled below the dew point, so that the moisture contained in the respiratory gas condenses.
- various facilities are used, such as water ice, a latent heat storage or a zeolite cooler.
- the heat collector is formed as a reservoir for an evaporable liquid and connectable to an evacuated adsorbent container so that the liquid is vaporized by absorbing heat of vaporization and its vapor is adsorbed to an adsorbent in the adsorbent container adsorbing heat and heat of condensation, the adsorbent as an outside of the breathing gas flow is arranged, designed to deliver the heat to the environment provided heat sink.
- the device additionally comprises a cooling device with a coolant.
- the two flexible bags are arranged on both sides of a heat-conducting contact wall, which is part of the carrying frame.
- the object of the present invention is therefore to provide a breathing circuit device in which different cooling elements can be used easily and reliably with good heat output from the breathing gas to the cooling element.
- a breathing circuit device comprising at least one breathing gas line for forming a breathing circuit, a cooling device with a cooling elements for cooling the breathing gas passed through the breathing circuit, the cooling element is separated with a wall of the breathing gas in the at least one breathing gas line, the Wall one deformable wall is, so that by means of a deformation of the deformable wall, a direct contact between the cooling element and the deformable wall can be produced for adaptation to different cooling elements, wherein a breathing bag is provided as part of the breathing gas line and that within the breathing bag a partition wall is formed through which the breathing gas exits the breathing bag, the cooling element in the region of the channel at the deformable wall of the breathing bag applies.
- the deformable wall can adapt to the different surface structure of the cooling element, so that even with a use of different cooling elements in the breathing circuit device, a large-area direct contact between the deformable wall and the cooling element and thus good heat conduction from the to be cooled and dehumidifying breathing gas the cooling element is ensured.
- This can be used in an advantageous manner in the breathing circuit device different cooling elements, for example with water ice, a latent heat storage or an evaporator of a zeolite cooler.
- the breathing circuit device can thus be used flexibly for different applications with different cooling devices or cooling elements.
- a pressure on a first side of the wall with the cooling element is greater than on a second side, so that due to the pressure difference between the first and second side, the deformable wall is pressed onto the cooling element.
- the pressure on the first side of the wall corresponds to a respiratory gas pressure, wherein the pressure on the second side of the wall corresponds to an ambient pressure.
- the deformable wall Due to the pressure difference and the higher pressure on the first side of the deformable wall thus the deformable wall is pressed by the breathing gas pressure on the surface of the cooling element, so that there is a large-area direct contact between the deformable wall and the cooling element due to the deformability of the deformable wall , Thus, the heat can be transferred to a sufficient extent of the breathing gas on the deformable wall and then from the deformable wall to the cooling element for cooling and dehumidifying the respiratory gas at the deformable wall.
- the cooling element lies directly on the deformable wall. Due to the direct contact between the Cooling element and the deformable wall is thus a good heat transfer from the deformable wall to the cooling element possible.
- the breathing gas is in direct contact with the second side of the deformable wall.
- a thermal insulation is arranged on the outside of the cooling element and / or the respiratory gas is directly or indirectly in contact with the deformable wall or is in thermal communication.
- the thermal insulation prevents the cold provided by the cooling element from escaping into the environment of the breathing circuit device to a greater extent, so that the cooling provided by the cooling element essentially serves to cool and dehumidify the breathing gas in the breathing circuit system with the at least one Breathing gas line is used.
- the breathing gas is passed directly to the deformable wall.
- a further device is arranged between the respiratory gas and the deformable wall, so that the heat is conducted by the respiratory gas to the device and then to the deformable wall.
- This device may for example be a further wall or a container with a liquid or a gel.
- the breathing circuit device has a breathing bag as part of the at least one breathing gas line.
- the deformable wall forms in a variant of an outer wall of the breathing circuit device, in particular a housing of the breathing circuit device.
- the cooling element is at least partially, in particular completely, disposed within the breathing bag and the deformable wall separates the cooling element of the breathing gas in the breathing bag.
- a part of the breathing bag wall of the breathing bag forms the deformable wall, on which the cooling element rests directly.
- a liquid or gel is enclosed in a container having walls and at least one wall of the container is formed by the deformable wall and the cooling element rests against the deformable wall of the container.
- a heat side of the container with the breathing gas in thermal contact and on the deformable wall of the container is as a cold side of the container, the cooling element.
- the heat of the breathing gas is thus indirectly passed through the container with the gel to the deformable wall.
- the cooling element is located on the cold side.
- the liquid or gel in the container may change during phase change, i. from a solid to a liquid state, deform and thus allows a deformation of the deformable wall to adapt to different surface structures of the cooling element.
- the deformable wall is a foil and / or a two-dimensional bendable surface part and / or a tissue.
- the cooling element is a cooling container with water ice or with a latent heat storage or with a liquid to be evaporated of a sorption cooler, in particular zeolite cooler.
- the deformable wall at least partially, in particular completely, made of plastic.
- the breathing circuit device expediently comprises an inspiratory line and an expiratory line.
- the breathing circuit device has a Y-piece.
- the inspiratory and expiratory lines are connected to the Y-piece.
- a check valve are arranged on the inspiratory and expiratory line.
- An in Fig. 1 illustrated breathing circuit device 1 provides a respiratory carrier, not shown, of the breathing circuit device 1 breathing gas or breathing air available.
- the breathing circuit device 1 has a housing 18 made of plastic and / or metal.
- breathing gas conduits 2 are arranged as an inspiratory conduit 3 and as an expiratory conduit 4.
- the breathing gas lines 2 form a preferably completely closed breathing circuit system 5, so that no air is introduced from the surroundings of the breathing circuit device 1 into the breathing gas lines 2.
- the expiratory gas 20 is after flowing into the expiratory line 4 according to Fig.
- the carbon dioxide absorber 6 is designed as a soda lime container containing soda lime. In the soda lime container with soda lime, carbon dioxide is thus extracted from the expiration gas 20. In this chemical reaction The soda lime in the soda lime container heats up and also gives off some of the heat to the expired gas 20.
- the effluent from the carbon dioxide absorber 6 breathing gas 22 is then fed to a breathing bag 13.
- This respiratory gas 22 supplied to the breathing bag 13 is substantially purified of carbon dioxide and has a temperature, for example, in the range of 55 ° C. Thus, the expiratory gas was heated from 30 ° C after exhaling the respirator to a temperature of 55 ° C and has a relative humidity in the range of 100%.
- the breathing bag 13 has deformable breathing bag walls 32. Within the breathing bag 13, a partition wall 24 is formed, so that within the breathing bag 13, a channel 23 is formed. A part of the breathing bag wall 32 forms an outer wall of the breathing circuit device 1 or a part of the wall of the housing 18. At this, the housing 18 forming part of the breathing bag wall 32, is a cooling element 8 as part of a cooling device 7.
- the cooling element 8 is a container filled with water ice. On the cooling element 8, a thermal insulation 17 is also externally attached.
- two springs 19 are arranged, which are connected to both the breathing bag wall 32 and the housing 18.
- the springs 19 bring thereby a small pressure force on the breathing bag wall 32, so that the respiratory gas pressure within the breathing bag 13 is slightly greater than the ambient pressure outside the breathing circuit device 1. This is outside of the breathing bag 13, a lower pressure than within the breathing bag 13.
- Das In the breathing bag 13 introduced breathing gas 22 flows through the channel 23 and then after the Flow through the channel 23 from the breathing bag 13 back into the inspiratory line 3. That part of the breathing bag wall 32, on which the cooling element 8 rests, thereby forming a deformable wall 12.
- the deformable wall 12 has a first side 15, which with breathing gas 22 is in direct contact.
- the deformable wall 12 also has a second side 16 against which the cooling element 8 rests.
- the cooling element 8 is releasably attached to the breathing circuit device 1, in particular the housing 18 of the breathing circuit device 1, by means of at least one fastening device (not shown). This at least one fastening device is designed such that different cooling elements 8 can be attached to the breathing circuit device 1.
- a cooling element 8 can be attached with a different surface structure and thereby due to the deformability of the wall 12 and the existing pressure difference, a large area immediate contact area between the deformable wall 12 and the surface of the cooling element 8 is made.
- the heat can be conducted sufficiently well by the respiratory gas 22, through the deformable wall 12, to the cooling element 8.
- the breathing gas 22 is cooled within the breathing bag 13 and also condenses moisture here.
- the humidity of the inspiratory gas 21, which flows out of the breathing bag 13 can be lowered to physiologically acceptable levels.
- a second embodiment of the breathing circuit device 1 is shown.
- the cooling device 1 is a sorption cooler 25 designed as a zeolite cooler 26.
- the cooling element 8 used is an evaporator 27.
- the evaporator 27 is a container with an evaporable liquid, in particular water.
- the evaporator 27 is connected through a steam line 28 to a valve 29 with a sorbent container 30 formed as a zeolite container 31.
- zeolite is disposed within a container.
- the liquid evaporates in the evaporator 27 and the evaporator 27 thereby cools and thus can cool and dehumidify the breathing gas 22 in the channel 23 through the deformable wall 12.
- the vapor generated in the evaporator 27 is passed through the steam line 28 to the zeolite in the zeolite container 31 and adsorbed there. Heat is generated in the zeolite within the zeolite container 31, which is dissipated to the environment.
- the thermal insulation 17 on the evaporator 27 as a cooling element 8 prevents that the heat provided by the evaporator 27 is dissipated to a greater extent to the environment of the breathing circuit device 1 and thus substantially for cooling and dehumidifying the respiratory gas 22 in the channel 23rd can be used.
- cooling element 8 for example, a latent heat storage with paraffin, salt hydrate, or a cooling element 8 as part of a Peltier cooler or a heat pump or refrigeration system, wherein in the heat pump or refrigeration system, the cooling element 8 represents the evaporator of a refrigeration circuit with a compressor and a condenser ,
- cooling elements 8 can be arranged with a different surface structure, so that in a flexible manner with a basic unit of the breathing circuit device 1 different cooling elements 8 can be used for different applications of the breathing circuit device 1. This can be provided with different cooling elements 8 for a variety of applications with a low-cost manufactured basic unit of the breathing circuit device 1, a breathing circuit device.
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Claims (14)
- Appareil de circuit respiratoire (1), comprenant
une conduite (2) de gaz respiratoire pour former un système respiratoire fermé (5), un dispositif de refroidissement (7) avec au moins un élément de refroidissement (8) pour refroidir un gaz respiratoire dirigé à travers la conduite (2) de gaz respiratoire, sachant que l'élément de refroidissement (8) au moins unique est séparé du gaz respiratoire par une paroi (12),
caractérisé en ce que la paroi (12) est une paroi déformable (12), de sorte qu'au moyen d'une déformation de la paroi déformable (12), on peut réaliser un contact direct entre l'élément de refroidissement (8) au moins unique et la paroi déformable (12). - Appareil de circuit respiratoire selon la revendication 1, caractérisé en ce qu'une pression sur un premier côté (15) de la paroi déformable (12) avec l'élément de refroidissement (8) est plus grande que sur un deuxième côté (16), de sorte qu'en raison de la différence de pression entre le premier et le deuxième côté (15, 16), la paroi déformable (12) est pressée sur l'élément de refroidissement (8).
- Appareil de circuit respiratoire selon la revendication 1 ou 2, caractérisé en ce que l'élément de refroidissement (8) repose directement sur la paroi déformable (12).
- Appareil de circuit respiratoire selon la revendication 2 ou 3, caractérisé en ce que le gaz respiratoire est directement en contact avec le premier côté (15) de la paroi déformable (12).
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'une isolation thermique est disposée du côté extérieur sur l'élément de refroidissement (8), et/ou le gaz respiratoire se trouve indirectement ou directement en liaison thermique avec la paroi déformable (12).
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'appareil de circuit respiratoire présente un sac respiratoire (13) comme élément de la conduite (2) de gaz respiratoire, et/ou la paroi déformable (12) forme une paroi extérieure de l'appareil de circuit respiratoire (1), en particulier d'un boîtier (18) de l'appareil de circuit respiratoire (1).
- Appareil de circuit respiratoire selon la revendication 6, caractérisé en ce que l'élément de refroidissement (8) est disposé au moins en partie et en particulier en totalité à l'intérieur du sac respiratoire (13), et la paroi déformable (12) sépare l'élément de refroidissement (8) du gaz respiratoire dans le sac respiratoire (13).
- Appareil de circuit respiratoire selon la revendication 6 ou 7, caractérisé en ce qu'une partie de la paroi (32) du sac respiratoire (13) forme la paroi déformable (12), contre laquelle repose directement l'élément de refroidissement (8).
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'un liquide ou un gel est enfermé dans un récipient doté de parois et au moins une paroi du récipient est formé par la paroi déformable (12), et l'élément de refroidissement (8) repose contre la paroi déformable (12) du récipient.
- Appareil de circuit respiratoire selon la revendication 9, caractérisé en ce qu'un côté chaud du récipient se trouve en contact thermique avec le gaz respiratoire, et l'élément de refroidissement (8) repose sur la paroi déformable (12) du récipient en tant que côté froid du récipient.
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce que la paroi déformable (12) est un film et/ou un élément surfacique souple à deux dimensions et/ou un tissu.
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de refroidissement (8) est un récipient de refroidissement avec de la glace hydrique ou avec un accumulateur de chaleur latente ou avec un liquide à évaporer d'un refroidisseur à sorption, en particulier d'un refroidisseur zéolitique.
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'appareil de circuit respiratoire présente un absorbeur (6) de dioxyde de carbone pour éliminer le dioxyde de carbone du gaz respiratoire dirigé à travers le système respiratoire fermé (5).
- Appareil de circuit respiratoire selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'appareil de circuit respiratoire présente un réservoir d'oxygène (9) pour emmagasiner de l'oxygène et une unité (10) d'apport d'oxygène pour introduire dans le gaz respiratoire de l'oxygène provenant du réservoir d'oxygène (9).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10159309.3A EP2374509B1 (fr) | 2010-04-08 | 2010-04-08 | Appareil de circuit respiratoire |
US13/044,167 US9950196B2 (en) | 2010-04-08 | 2011-03-09 | Breathing circuit device |
CN2011100932854A CN102210911A (zh) | 2010-04-08 | 2011-04-08 | 呼吸循环仪 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10159309.3A EP2374509B1 (fr) | 2010-04-08 | 2010-04-08 | Appareil de circuit respiratoire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2374509A1 EP2374509A1 (fr) | 2011-10-12 |
EP2374509B1 true EP2374509B1 (fr) | 2016-09-28 |
Family
ID=42224780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10159309.3A Active EP2374509B1 (fr) | 2010-04-08 | 2010-04-08 | Appareil de circuit respiratoire |
Country Status (3)
Country | Link |
---|---|
US (1) | US9950196B2 (fr) |
EP (1) | EP2374509B1 (fr) |
CN (1) | CN102210911A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012004205B4 (de) | 2012-03-01 | 2015-05-21 | Dräger Safety AG & Co. KGaA | Atemkreislaufgerät |
CN102974052B (zh) * | 2012-12-19 | 2015-07-22 | 江西易用科技有限公司 | 化学氧消防自救呼吸器氧气反应罐 |
DE102013016601B4 (de) | 2013-10-07 | 2015-09-10 | Dräger Safety AG & Co. KGaA | Kühlvorrichtung für ein Atemschutzgerät |
DE102013016599B4 (de) * | 2013-10-07 | 2015-11-05 | Dräger Safety AG & Co. KGaA | Kühlvorrichtung für ein Atemschutzgerät |
CN103895840A (zh) * | 2014-04-01 | 2014-07-02 | 中国人民解放军海军医学研究所 | 潜水呼吸器呼吸舱 |
DE102014017712B3 (de) * | 2014-12-01 | 2016-05-12 | Drägerwerk AG & Co. KGaA | Atemluftversorgung mit Rückatemsystem |
CN105498056B (zh) * | 2015-12-24 | 2018-03-23 | 聂文军 | 一种呼吸循环仪 |
DE102019007408B4 (de) | 2019-10-24 | 2022-07-07 | Dräger Safety AG & Co. KGaA | Kühlelement zur Verwendung in einer Kühlvorrichtung eines Kreislaufatemschutzgerätes |
IT202000006121A1 (it) | 2020-03-23 | 2020-06-23 | Valentina Daddi | Sistema di pompaggio d'ossigeno e ventilazione assistita ad alimentazione elettrica autonoma |
GB202006832D0 (en) * | 2020-05-07 | 2020-06-24 | Dive Systems Ltd | Apparatus and method |
CN113120195A (zh) * | 2021-05-26 | 2021-07-16 | 深圳易如潜水装备有限公司 | 一种纯氧型密闭式循环呼吸系统 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527214A (en) * | 1967-05-24 | 1970-09-08 | Air Liquide | Apparatus for regenerating a breathable gas in individual respiratory device of the closed-circuit type |
SU474173A1 (ru) * | 1973-05-03 | 1975-11-15 | Всесоюзный научно-исследовательский институт горноспасательного дела | Газотеплозащитный костюм |
DE2700492B1 (de) * | 1977-01-07 | 1978-05-18 | Draegerwerk Ag | Atemschutzgeraet mit einer Kuehlvorrichtung |
JPH0545316Y2 (fr) * | 1986-07-25 | 1993-11-18 | ||
DE4029084A1 (de) | 1990-09-13 | 1992-03-19 | Draegerwerk Ag | Kuehlvorrichtung zur atemgaskuehlung in einem atemschutzgeraet |
US5435152A (en) * | 1994-02-18 | 1995-07-25 | Microcool Corporation | Air treating device having a bellows compressor actuable by memory-shaped metal alloy elements |
DE10304394B4 (de) * | 2003-02-04 | 2005-10-13 | Dräger Safety AG & Co. KGaA | Atemgerät mit einem Kreislauf für Atemgas |
DE102005062185B3 (de) * | 2005-12-23 | 2007-07-12 | Dräger Medical AG & Co. KG | Beatmungsvorrichtung mit aktiver Entfeuchtung |
CN200954322Y (zh) * | 2006-09-04 | 2007-10-03 | 煤炭科学研究总院重庆分院 | 隔绝式正压氧气呼吸器 |
DE102008055700B4 (de) * | 2008-11-03 | 2013-02-21 | Dräger Safety AG & Co. KGaA | Atemgerät mit einem Kreislauf für Atemgas |
-
2010
- 2010-04-08 EP EP10159309.3A patent/EP2374509B1/fr active Active
-
2011
- 2011-03-09 US US13/044,167 patent/US9950196B2/en active Active
- 2011-04-08 CN CN2011100932854A patent/CN102210911A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20110247618A1 (en) | 2011-10-13 |
EP2374509A1 (fr) | 2011-10-12 |
US9950196B2 (en) | 2018-04-24 |
CN102210911A (zh) | 2011-10-12 |
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