EP0893141A1 - Überdrucklüftungsvorrichtung für Gasmaske - Google Patents

Überdrucklüftungsvorrichtung für Gasmaske Download PDF

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Publication number
EP0893141A1
EP0893141A1 EP98401841A EP98401841A EP0893141A1 EP 0893141 A1 EP0893141 A1 EP 0893141A1 EP 98401841 A EP98401841 A EP 98401841A EP 98401841 A EP98401841 A EP 98401841A EP 0893141 A1 EP0893141 A1 EP 0893141A1
Authority
EP
European Patent Office
Prior art keywords
cover
ventilation device
filter
fan
wheel
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
EP98401841A
Other languages
English (en)
French (fr)
Other versions
EP0893141B1 (de
Inventor
Christian Jay
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0893141A1 publication Critical patent/EP0893141A1/de
Application granted granted Critical
Publication of EP0893141B1 publication Critical patent/EP0893141B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/006—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort with pumps for forced ventilation

Definitions

  • the technical sector of the present invention is that of face mask air filters fitted with a ventilation system causing overpressure in the mask.
  • the purpose of the present invention is to provide a ventilation device for a gas mask filter does not not having the disadvantages noted above and which either integrated into the filter support.
  • the invention therefore relates to a device for overpressure ventilation of a mask air filter gas integrated in a box closed by a cover, consisting of a centrifugal fan without connected volute upstream of the filter, characterized in that it comprises a support secured to the filter cover allowing center the motor and the fan wheel on the axis longitudinal of the filter, so as to obtain a axial fan operation.
  • the cover is provided with a support receiving well, comprising a first side wall cooperating with the connection means, a second side wall extending the first and a bottom wall provided air passage holes.
  • slats are attached to the second wall side and bottom to channel air to the orifices of passage.
  • the support consists of a centering cover motor detachably adjusted on the cover.
  • a deflector is arranged between the support and the wheel.
  • the hood is presented in the form of a substantially cylindrical element extended by a side wall provided with means of connection to the cover.
  • the side wall of the hood is provided with inlets air and is extended internally by a delimiting fold the deflector.
  • the side wall of the hood delimits with the baffle a wheel observation window.
  • the lower edge of the wheel is fixed rigidly to the axis of the motor supported by a bearing, said axis being aligned with axis B of the filter.
  • An advantage of the present invention lies in the very small footprint of the device and the number reduced parts which compose it, which allows to obtain a low mass.
  • Another advantage of the invention lies in the axial mounting of the fan thus making the assembly very compact.
  • Another advantage of the invention lies in the reduction in the possibilities of separation of the its filter during movements of the head or arms at during the wearer's movements or in his different work postures.
  • filter 1 On the longitudinal section of the following filter 1 Figures 1 and 2, we see that it consists conventionally of a case 2 closed by a cover 3, containing a filtration system here consisting of a cartridge 4 of activated carbon and a paper filter 5.
  • This filter 1 is screwed using a threaded connection 6 on the nozzle 7 of the gas mask.
  • Filter 1 has an axis B of longitudinal symmetry.
  • level of the cover 3 a fan 8 consisting of a motor 9 and a wheel 10, and which is powered by a battery 11 via an electrical connection 12.
  • the cover 3 delimits a well 13 receiving a support 14 from the fan 8.
  • Well 13 includes a first part tubular 15 extended by a second tubular part 16 of smaller diameter, which are aligned on an axis A merged with axis B, and a bottom 17 pierced with orifices 18.
  • the support 14 consists of a cover 19 and is presented in the form of a substantially cylindrical element extended by a side wall 21 cooperating with the part tubular 15 for fixing the cover 14 to the cover 3, using a connection means 22, for example a thread, or a quarter-turn or snap-on system.
  • the assembly described above is completed by a deflector 23 delimiting with the bottom 17 of the cover a housing for inside which the wheel 10 rotates.
  • This deflector 23 can be produced either as an independent piece fixed on its periphery to the side wall 21, either under the forms a fold of the side wall 21 itself.
  • the fins 20 of wheel 10 have a curved profile, and in Figure 1 we see the upper edge 24a and the edge lower 24b of each of them.
  • the device ventilation includes a chamber 25 bounded by the deflector 23 and the wall 21, a chamber 26 delimited by the fins 20 of the wheel 10 and the lower edge 24b of the wheel 10, a chamber 27 delimited by the wheel 10 and the tubular part 16 of the cover. Room 27 opens in holes 18 to bring air to the level of the system filtration.
  • the wall 21 is pierced with a number orifices 28 for the intake of air.
  • the fan wheel 10 by its lower edge, is rigidly fixed to the axis of the motor supported by a bearing 30.
  • FIG 3 there is shown in perspective a view of the cover showing the strips 29 integral with the wall 16 and the bottom 17. These strips have a curved profile and serve to channel the air coming radially from wheel 10 to send it axially towards the filter 5. These strips 29 can be molded directly during the manufacture of the cover if it is made of plastic.
  • Figure 4 which is a sectional view along axis A-A of Figure 1, we see the cover 3, the part tubular 16, the strips 29 of said cover and the fins 20 of the wheel driven by the motor 9.
  • the slats 29 send pressurized air to the chambers 27 from chamber 26 as previously indicated.
  • FIG 5 there is shown a view of top of the ventilation device showing the openings 28 of the cover 3 in which the wall 21 is inserted extended by the cover 19.
  • the facial mask can be used when the fan is off or when it has been removed. In this case, the breathing does not exist and the user must overcome the pressure losses of the entire filtration system by his own breathing.
  • the case 2 is shown schematically and the electrical connection 12 is provided with a plug for connect to this box.
  • the case is carried by the user and the fan is activated by entering the plug in the battery box or by activating a light switch.
  • the fan is working in discharge by being disposed on the inlet of the filter air.
  • the seal with the filter is therefore not paramount.
  • the fan works in this configuration as an axially mounted fan. This embodiment makes it possible to have a reduced bulk, a minimum of parts and therefore a low mass bearable by the user.
  • the ventilation device according to the invention When the filtration system 4, 5 is saturated, it must be replaced. This operation is carried out with the ventilation device according to the invention in the workplace or in the area contaminated without removing the face mask and while continuing to be protected. For this, the user must hold your breath to remove ventilation, replace the filter and replace the ventilation.
  • the duration of these operations with the system according to the invention is less than 10 s. because the user does not perform any intervention on the ventilation device itself.
  • the device according to the invention can be used indifferently with particle filters, gas filters or combination filters; the dimensions wheel and motor can be adapted to suit of the flow and overpressure that we want to obtain in air filter outlet.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP98401841A 1997-07-22 1998-07-21 Überdrucklüftungsvorrichtung für Gasmaske Expired - Lifetime EP0893141B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9709278A FR2766377B1 (fr) 1997-07-22 1997-07-22 Dispositif de ventilation en surpression pour masque a gaz
FR9709278 1997-07-22

Publications (2)

Publication Number Publication Date
EP0893141A1 true EP0893141A1 (de) 1999-01-27
EP0893141B1 EP0893141B1 (de) 2003-06-04

Family

ID=9509467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401841A Expired - Lifetime EP0893141B1 (de) 1997-07-22 1998-07-21 Überdrucklüftungsvorrichtung für Gasmaske

Country Status (5)

Country Link
US (1) US6050262A (de)
EP (1) EP0893141B1 (de)
CA (1) CA2242667C (de)
DE (1) DE69815217T2 (de)
FR (1) FR2766377B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2094360A1 (de) * 2006-12-13 2009-09-02 Ludwik Fedorko Verfahren und vorrichtung zur besseren belüftung
WO2021043688A1 (en) * 2019-09-04 2021-03-11 Koninklijke Philips N.V. A face mask
EP3808412A1 (de) * 2019-10-15 2021-04-21 Koninklijke Philips N.V. Gesichtsmaske

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6382208B2 (en) * 1998-11-02 2002-05-07 Board Of Regents University Of Nebraska System for controlling the internal temperature of a respirator
US6435184B1 (en) * 2000-09-01 2002-08-20 Tien Lu Ho Gas mask structure
DE10210878B4 (de) * 2002-03-12 2018-01-04 Drägerwerk AG & Co. KGaA Vorrichtung zur Atemunterstützung
US6701925B1 (en) 2002-04-11 2004-03-09 Todd A. Resnick Protective hood respirator
US6874499B2 (en) * 2002-09-23 2005-04-05 3M Innovative Properties Company Filter element that has a thermo-formed housing around filter material
FR2856930B1 (fr) * 2003-07-04 2007-09-07 Saime Sarl Dispositif d'aide a la respiration a turbine et capteur modulaires.
NZ546389A (en) 2003-09-25 2009-09-25 Resmed Ltd Ventilator mask and system
US7658190B1 (en) 2004-04-06 2010-02-09 Sti Licensing Corp. Portable air-purifying system utilizing enclosed filters
US7748380B1 (en) 2004-04-06 2010-07-06 Sti Licensing Corporation Combined air-supplying/air-purifying system
FR2899484B1 (fr) * 2007-06-11 2010-07-30 Saime Dispositif d'aide a la respiration a turbine et ventilateur axial
WO2010080709A1 (en) * 2009-01-08 2010-07-15 Hancock Medical Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders
WO2011050059A1 (en) * 2009-10-20 2011-04-28 Michael Gerard Lalonde Integrated positive airway pressure apparatus
EP3323461B1 (de) 2009-11-19 2021-12-29 ResMed Motor Technologies Inc Ventilateur
US8336546B2 (en) 2011-02-08 2012-12-25 Hancock Medical, Inc. Positive airway pressure system with head control
EP3470104B1 (de) 2011-07-13 2023-01-25 Fisher & Paykel Healthcare Limited Laufrad und motoranordnung
US10137264B2 (en) 2011-07-13 2018-11-27 Fisher & Paykel Healthcare Limited Respiratory assistance apparatus
US9452374B2 (en) 2011-09-20 2016-09-27 Clarification Technology, Inc. Filtration device for cooking oil
DE102012018660A1 (de) * 2012-09-21 2014-03-27 Pm Atemschutz Gmbh Filter mit integriertem Motor
AU2013365897A1 (en) 2012-12-18 2015-07-16 Fisher & Paykel Healthcare Limited Impeller and motor assembly
US10314989B2 (en) 2013-01-28 2019-06-11 Hancock Medical, Inc. Position control devices and methods for use with positive airway pressure systems
US10159856B1 (en) * 2013-11-07 2018-12-25 The United States Of America As Represented By The Secretary Of The Army Apparatus and method for replacing an air filter of an air filtration mask
US10881829B2 (en) 2014-08-18 2021-01-05 Resmed Inc. Portable pap device with humidification
USD776802S1 (en) 2015-03-06 2017-01-17 Hancock Medical, Inc. Positive airway pressure system console
JP2019518520A (ja) 2016-05-19 2019-07-04 ハンコック メディカル， インコーポレイテッド 位置閉塞性睡眠時無呼吸検出システム
CN111033067B (zh) 2017-04-23 2022-01-14 费雪派克医疗保健有限公司 呼吸辅助设备
CN108175969B (zh) * 2018-01-30 2020-05-01 山东星火科学技术研究院 一种径流式化学实验防毒面罩

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2097508A5 (de) * 1970-07-09 1972-03-03 Bassin Nord Pas Calais
EP0164946A2 (de) * 1984-06-06 1985-12-18 Racal Safety Limited Athemschutzmasken
GB2222777A (en) * 1988-09-19 1990-03-21 Sabre Safety Ltd Positive pressure filter respirators
US5404874A (en) * 1992-03-19 1995-04-11 Micronel Ag Device for connecting a fan to a face mask filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629868A (en) * 1970-07-21 1971-12-28 Trison Corp Adapter assembly for a welding helmet or the like
US4320755A (en) * 1980-07-18 1982-03-23 Marwin Foundry Units Limited Air supply units
US5372130A (en) * 1992-02-26 1994-12-13 Djs&T Limited Partnership Face mask assembly and method having a fan and replaceable filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2097508A5 (de) * 1970-07-09 1972-03-03 Bassin Nord Pas Calais
EP0164946A2 (de) * 1984-06-06 1985-12-18 Racal Safety Limited Athemschutzmasken
GB2222777A (en) * 1988-09-19 1990-03-21 Sabre Safety Ltd Positive pressure filter respirators
US5404874A (en) * 1992-03-19 1995-04-11 Micronel Ag Device for connecting a fan to a face mask filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2094360A1 (de) * 2006-12-13 2009-09-02 Ludwik Fedorko Verfahren und vorrichtung zur besseren belüftung
EP2094360A4 (de) * 2006-12-13 2013-06-12 Ludwik Fedorko Verfahren und vorrichtung zur besseren belüftung
WO2021043688A1 (en) * 2019-09-04 2021-03-11 Koninklijke Philips N.V. A face mask
EP3808412A1 (de) * 2019-10-15 2021-04-21 Koninklijke Philips N.V. Gesichtsmaske

Also Published As

Publication number Publication date
US6050262A (en) 2000-04-18
CA2242667C (fr) 2006-07-04
DE69815217T2 (de) 2004-04-29
EP0893141B1 (de) 2003-06-04
DE69815217D1 (de) 2003-07-10
FR2766377A1 (fr) 1999-01-29
FR2766377B1 (fr) 1999-09-17
CA2242667A1 (fr) 1999-01-22

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