EP2374509A1 - Appareil de circuit respiratoire - Google Patents

Appareil de circuit respiratoire Download PDF

Info

Publication number
EP2374509A1
EP2374509A1 EP10159309A EP10159309A EP2374509A1 EP 2374509 A1 EP2374509 A1 EP 2374509A1 EP 10159309 A EP10159309 A EP 10159309A EP 10159309 A EP10159309 A EP 10159309A EP 2374509 A1 EP2374509 A1 EP 2374509A1
Authority
EP
European Patent Office
Prior art keywords
breathing
cooling element
circuit device
deformable wall
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10159309A
Other languages
German (de)
English (en)
Other versions
EP2374509B1 (fr
Inventor
Jochim Dr. Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draeger Safety AG and Co KGaA
Original Assignee
Draeger Safety AG and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Draeger Safety AG and Co KGaA filed Critical Draeger Safety AG and Co KGaA
Priority to EP10159309.3A priority Critical patent/EP2374509B1/fr
Priority to US13/044,167 priority patent/US9950196B2/en
Priority to CN2011100932854A priority patent/CN102210911A/zh
Publication of EP2374509A1 publication Critical patent/EP2374509A1/fr
Application granted granted Critical
Publication of EP2374509B1 publication Critical patent/EP2374509B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 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 conduction 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 carbon dioxide absorber for removing carbon dioxide from the breathing gas passed through the breathing circuit, preferably a cooling device with a cooling element for cooling the breathing gas passed through the breathing circuit, wherein the Cooling element is separated with a wall from the breathing gas in the at least one breathing gas line, an oxygen tank for storing oxygen, an oxygen addition unit for introducing oxygen from the oxygen tank into the breathing gas, wherein the wall 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.
  • 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 and / or the deformable wall forms 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 part of the heat to the expiration 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 exhaled 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%.
  • An oxygen container 9 arranged inside the housing 18, an oxygen addition unit 10, for example designed as a valve, and an oxygen line 11 serve to supply oxygen from the oxygen container 9 to the breathing gas in the breathing bag 13.
  • the expiratory gas 20 is replaced with oxygen, d. H. the oxygen content in the expiratory gas 20 is increased, so that it can again be supplied as inspiratory gas 21 with a sufficient oxygen content to the respirator of the breathing circuit device 1.
  • 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.
  • the contact area between the deformable wall 12 and the cooling element 8 is in the range of about 600 cm 2 .
  • this contact surface is greater than 300 cm 2 , 400 cm 2 , 600 cm 2 or 800 cm 2 , so that even when using different cooling elements 8 a sufficiently good heat transfer from the breathing gas 22 to the cooling element 8 is ensured.
  • 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.
  • FIG. 3 a third embodiment of the breathing circuit device 1 is shown.
  • the replaceable cooling element 8 is arranged inside the breathing bag 13.
  • the cooling element 8 is separated by means of the deformable wall 12 as a film of the breathing gas 22 within the breathing bag 13. Due to the pressure difference between the respiratory gas within the breathing bag 13 and the surroundings of the breathing bag 13, which also encloses the space within the deformable wall 12 with the cooling element 8, the deformable wall 12 is pressed onto the cooling element 8.
  • the cold provided by the cooling element 8 can be provided substantially completely for cooling and dehumidifying the respiratory gas 22 within the breathing bag 13.
  • 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.

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  • 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)
EP10159309.3A 2010-04-08 2010-04-08 Appareil de circuit respiratoire Active EP2374509B1 (fr)

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 true EP2374509A1 (fr) 2011-10-12
EP2374509B1 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004205A1 (de) 2012-03-01 2013-09-05 Dräger Safety AG & Co. KGaA Atemkreislaufgerät
WO2015051890A1 (fr) * 2013-10-07 2015-04-16 Dräger Safety AG & Co. KGaA Dispositif refroidisseur pour appareil de protection respiratoire
WO2015051895A1 (fr) * 2013-10-07 2015-04-16 Dräger Safety AG & Co. KGaA Dispositif de refroidissement appareil de protection respiratoire
WO2016087020A1 (fr) * 2014-12-01 2016-06-09 Drägerwerk AG & Co. KGaA Alimentation en air respiratoire équipée d'un système de réinspiration
WO2021224643A1 (fr) * 2020-05-07 2021-11-11 Dive Systems Limited Appareil de réinhalation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
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

Citations (3)

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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
DE2700492B1 (de) * 1977-01-07 1978-05-18 Draegerwerk Ag Atemschutzgeraet mit einer Kuehlvorrichtung
DE4029084A1 (de) 1990-09-13 1992-03-19 Draegerwerk Ag Kuehlvorrichtung zur atemgaskuehlung in einem atemschutzgeraet

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SU474173A1 (ru) * 1973-05-03 1975-11-15 Всесоюзный научно-исследовательский институт горноспасательного дела Газотеплозащитный костюм
JPH0545316Y2 (fr) * 1986-07-25 1993-11-18
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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
DE2700492B1 (de) * 1977-01-07 1978-05-18 Draegerwerk Ag Atemschutzgeraet mit einer Kuehlvorrichtung
DE4029084A1 (de) 1990-09-13 1992-03-19 Draegerwerk Ag Kuehlvorrichtung zur atemgaskuehlung in einem atemschutzgeraet

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004205B4 (de) * 2012-03-01 2015-05-21 Dräger Safety AG & Co. KGaA Atemkreislaufgerät
WO2013127886A2 (fr) 2012-03-01 2013-09-06 Dräger Safety AG & Co. KGaA Respirateur
WO2013127886A3 (fr) * 2012-03-01 2014-04-17 Dräger Safety AG & Co. KGaA Respirateur
CN104159641A (zh) * 2012-03-01 2014-11-19 德拉格安全股份两合公司 呼吸循环设备
US10188879B2 (en) 2012-03-01 2019-01-29 Dräger Safety AG & Co. KGaA Breathing circuit device
DE102012004205A1 (de) 2012-03-01 2013-09-05 Dräger Safety AG & Co. KGaA Atemkreislaufgerät
WO2015051890A1 (fr) * 2013-10-07 2015-04-16 Dräger Safety AG & Co. KGaA Dispositif refroidisseur pour appareil de protection respiratoire
WO2015051895A1 (fr) * 2013-10-07 2015-04-16 Dräger Safety AG & Co. KGaA Dispositif de refroidissement appareil de protection respiratoire
GB2532701B (en) * 2013-10-07 2019-03-27 Draeger Safety Ag & Co Kgaa Cooling device for a protective respiratory apparatus
GB2532701A (en) * 2013-10-07 2016-05-25 Draeger Safety Ag & Co Kgaa Device for a breathing apparatus
US10463893B2 (en) 2013-10-07 2019-11-05 Dräger Safety AG & Co. KGaA Cooling device for a protective respiratory apparatus
WO2016087020A1 (fr) * 2014-12-01 2016-06-09 Drägerwerk AG & Co. KGaA Alimentation en air respiratoire équipée d'un système de réinspiration
US10661042B2 (en) 2014-12-01 2020-05-26 Drägerwerk AG & Co. KGaA Breathing air supply with rebreathing system
WO2021224643A1 (fr) * 2020-05-07 2021-11-11 Dive Systems Limited Appareil de réinhalation

Also Published As

Publication number Publication date
US9950196B2 (en) 2018-04-24
EP2374509B1 (fr) 2016-09-28
US20110247618A1 (en) 2011-10-13
CN102210911A (zh) 2011-10-12

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