EP0420812B1 - Tragbares Atemschutzgerät - Google Patents

Tragbares Atemschutzgerät Download PDF

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Publication number
EP0420812B1
EP0420812B1 EP90810722A EP90810722A EP0420812B1 EP 0420812 B1 EP0420812 B1 EP 0420812B1 EP 90810722 A EP90810722 A EP 90810722A EP 90810722 A EP90810722 A EP 90810722A EP 0420812 B1 EP0420812 B1 EP 0420812B1
Authority
EP
European Patent Office
Prior art keywords
filter
housing
arm
protection apparatus
breathing protection
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.)
Expired - Lifetime
Application number
EP90810722A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0420812A1 (de
Inventor
Peter Meier
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.)
Micronel AG
Original Assignee
Micronel AG
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 Micronel AG filed Critical Micronel AG
Publication of EP0420812A1 publication Critical patent/EP0420812A1/de
Application granted granted Critical
Publication of EP0420812B1 publication Critical patent/EP0420812B1/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 invention relates to a breathing apparatus according to the preamble of independent claim 1.
  • a breathing apparatus of this type is known for example from DE-A-36 23 269.
  • Devices of this type are required, for example, in civil defense for people who need breathing support to overcome the resistance to inhalation. Similar devices are also part of the personal equipment of pilots and doctors and of craftsmen who have to work in contaminated ambient air.
  • the power supply to the blower usually comes from a rechargeable battery pack housed in the housing.
  • the fan sucks in the outside air through an intake opening and presses it through the filter under pressure.
  • respirators are therefore also called positive pressure respirators.
  • these positive pressure breathing devices are characterized by a higher level of safety.
  • the device can be easily expanded in such a way that the air volume can be controlled, that is to say that the delivery rate of the blower can automatically adapt to the needs of the user.
  • the suction opening to the blower is protected by a protruding and in any case disturbing mouthpiece molded onto the protective mask, which, however, in turn has an opening which is easily accessible from the outside and through which dripping and spraying water is largely unhindered the blower can penetrate and impair it.
  • the invention is therefore based on the object of providing a breathing apparatus of the type mentioned, in which the suction opening is protected more effectively than before against dripping and spraying water and which is nevertheless compact and handy.
  • the device should still be inexpensive to manufacture and easy to use.
  • the object is achieved by the invention according to claim 1.
  • the suction opening is covered by the filter and, with the fan running, the outside air is drawn to the suction opening via spaces between the housing and the filter.
  • the suction opening is thus largely covered and protected against the ingress of dripping and spraying water as well as against other liquids and solids from the environment.
  • the filter itself as a cover serves the suction opening, no additional protective means are required, which would increase the weight of the breathing apparatus.
  • the filter forms a finger guard with respect to the suction opening and makes it impossible to cover the suction opening unintentionally, for example with a jacket.
  • an arm is attached to the housing, which holds the filter and through which an air duct leads from the fan to the connection opening for the filter.
  • a commercially available respiratory filter 2 has an inlet opening 2b and an outlet opening 2a.
  • the filter 2 is connected in a known manner to a face mask or helmet through a breathing tube, not shown here.
  • the filter 2 is detachably fixed to a housing 3 of the breathing apparatus 1 by being placed in the direction of arrow 9 from an arm 3 l of the housing 3, as shown in FIG. 1, locking cams on a housing wall 3 m and opposing locking cams 3 k on holding clips 3h center and fix the filter with respect to a connection opening 3f and a flat filter 3g.
  • the position of the filter 2 is determined by molded pads 3p.
  • the housing 3 has a body 3b and a removable cover 3a and is preferably made of plastic by injection molding.
  • a radial fan 5 known per se is accommodated in the housing 3 and is operated by an electric motor 5a.
  • Batteries 6 are also accommodated in the housing 3 for the power supply of the motor 5a.
  • a run control of the blower 5 and a control of the number of inserted batteries is possible via a transparent window 3c.
  • the device naturally has a switch, not shown here, for switching the fan on and off.
  • the suction opening 5c of the blower 5 is located directly behind a suction opening 3e which is arranged approximately in the middle in a wall 3m of the housing.
  • the filter 2 which thus covers this opening but still leaves gaps 8a, 8b and 8c free, through which the outside air can reach the suction opening 3e. 2
  • the outside air can reach the suction opening 3e from the front and from the rear, as indicated by arrows 12, as shown in FIG. 2.
  • An inner wall 3n of the arm 3l is trough-shaped, so that spaces 8b and 8c are formed between the filter 2 and the wall 3n, flow into the outside air and can reach the suction opening 3e along the arm 3l.
  • the spaces 8a to 8c can be kept comparatively narrow.
  • the outside air thus passes through the spaces 8a to 8c and via the suction opening 3e to the suction opening 5c of the fan 5 and is conveyed by the latter into channel 4 under increased pressure via a spiral channel 5b.
  • the compressed outside air passes through the opening 2b into the interior of the filter, where the undesired components of the outside air are removed as far as possible.
  • about 40 to 60 liters of outside air can be cleaned per minute with a filter 2.
  • the filter 2 protrudes laterally in FIG. 2 from the arm 3 l and can therefore also be gripped well with gloves and removed for replacement, the retaining clips 3 h being deflected elastically.
  • a replacement filter 2 is placed on the arm 3 l in the direction of the arrow 9, the latching cams 3d and 3k engaging at the edge of the filter 2.
  • the embodiment variant of the respiratory protection device shown in FIG. 3 has 30 l in the housing 30 with two arms extending in opposite directions.
  • a radial fan 33 with an axis of rotation 33 a is accommodated in a central part 30 between the arms 30 l, which conveys the compressed air into channels 34 and from these through two filters 2.
  • the middle part 30m has a cover, not shown here, through which the batteries housed in this part can be replaced.
  • the filters 2 have a bulge 31 on the circumference, which is engaged on molded cams 30d. These cams 30d can also be metal balls that can be retracted against a spring force. In a recess 3i in the bottom of the housing 30, a shoulder strap, not shown here, can be hung.
  • two filters 2 are attached here, this version is also comparatively slim and can therefore be worn under a coat, for example, without being too disturbed.

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)
EP90810722A 1989-09-29 1990-09-20 Tragbares Atemschutzgerät Expired - Lifetime EP0420812B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3541/89A CH679122A5 (xx) 1989-09-29 1989-09-29
CH3541/89 1989-09-29

Publications (2)

Publication Number Publication Date
EP0420812A1 EP0420812A1 (de) 1991-04-03
EP0420812B1 true EP0420812B1 (de) 1993-06-16

Family

ID=4258210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810722A Expired - Lifetime EP0420812B1 (de) 1989-09-29 1990-09-20 Tragbares Atemschutzgerät

Country Status (7)

Country Link
US (1) US5065745A (xx)
EP (1) EP0420812B1 (xx)
JP (1) JPH03121080A (xx)
AU (1) AU631458B2 (xx)
CH (1) CH679122A5 (xx)
DE (1) DE59001778D1 (xx)
HU (1) HU207232B (xx)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7964991A (en) * 1990-06-04 1991-12-31 Air-Ace Oy Respirator
EP0521829B1 (de) * 1991-07-02 1995-12-13 Micronel AG Tragbares Atemluftgerät
US5490501A (en) * 1994-05-16 1996-02-13 Crowley; Thomas J. Avalanche victim's air-from-snow breathing device
US5662627A (en) * 1995-08-09 1997-09-02 Sscor, Inc. Aspiration apparatus
USD382053S (en) * 1996-03-07 1997-08-05 Pellerito Lawrence N Portable oxygen regulator for home use
US5954704A (en) * 1997-06-23 1999-09-21 Impact Instrumentation, Inc. Aspirator fixture for ambulances
US5937856A (en) * 1997-07-31 1999-08-17 Jonasson; Hans Breathing device
TW398677U (en) * 1998-10-21 2000-07-11 Telepaq Technology Inc Battery device and joint structure of palm type electronic device
EP1197244A3 (de) * 2000-10-11 2002-10-23 Micronel AG Atemschutzeinrichtung für eine Schutzeinrichtung beispielsweise Schutzmaske, Schutzhaube oder Schutzanzug
US20050056287A1 (en) * 2003-08-21 2005-03-17 Botzen James T. In-mouth filter for sunless, liquid-spray tanning
US7198079B2 (en) * 2003-09-09 2007-04-03 Tvi Corporation Liquid delivery system of gas mask
US8584676B2 (en) * 2003-11-19 2013-11-19 Immediate Response Technologies Breath responsive filter blower respirator system
US7273052B2 (en) * 2003-12-11 2007-09-25 Tvi Corporation Pneumatic sealing system for protection masks
US7690379B2 (en) * 2004-06-01 2010-04-06 Branch, Banking and Trust Company Pressure indicator for positive pressure protection masks
US7469699B2 (en) * 2004-09-03 2008-12-30 Tvi Corporation Thin profile air purifying blower unit and filter cartridges, and method of use
US7458390B2 (en) * 2005-12-21 2008-12-02 Tvi Corporation Breath controlled air inlet for blower
US20080035151A1 (en) * 2006-08-08 2008-02-14 Gerardo Solorzano-Garcia Mouth-held breathing air filter
FR2966839B1 (fr) * 2010-10-27 2012-11-30 Bertin Technologies Sa Dispositif portable de collecte de particules et de microorganismes
US20140209096A1 (en) * 2013-01-25 2014-07-31 Shaahin Cheyene Portable Inhaler
DE102015122316A1 (de) * 2015-12-18 2017-06-22 Alfred Kärcher Gmbh & Co. Kg Tragbares individuelles Luftreinigungssystem
DE102016121822A1 (de) * 2016-11-14 2018-05-17 Alfred Kärcher Gmbh & Co. Kg Tragbares individuelles Luftreinigungssystem
WO2018104437A1 (en) * 2016-12-07 2018-06-14 Koninklijke Philips N.V. Pressure generator inlet filter apparatus
MX2022001972A (es) * 2019-08-20 2022-03-11 D Wheatley Entpr Inc Sistema modular e integrado de respiradores purificadores de aire motorizados.

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929343A (en) * 1930-05-16 1933-10-03 Belloni Angelo Respiratory hood
GB560877A (en) * 1942-10-23 1944-04-25 Man Nathanson Improvements in and relating to gas masks
US3565068A (en) * 1969-02-07 1971-02-23 Automatic Sprinkler Corp Breathing apparatus
US3822698A (en) * 1973-01-22 1974-07-09 R Guy Powered air-purifying respirator helmet
GB1495020A (en) * 1974-01-16 1977-12-14 Nat Res Dev Respirators
DE2612877C2 (de) * 1976-03-26 1985-06-20 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Atemluftversorgungsgerät
US4233972A (en) * 1978-05-08 1980-11-18 Wolfgang Hauff Portable air filtering and breathing assist device
GB2032284B (en) * 1978-10-02 1982-11-10 Racal Safety Ltd Breathing apparatus
US4430995A (en) * 1981-05-29 1984-02-14 Hilton Joseph R Power assisted air-purifying respirators
US4522639A (en) * 1983-04-15 1985-06-11 Figgie International Inc. Unified filter and connector housing assembly incorporating a diversion valve
AU559307B2 (en) * 1983-06-07 1987-03-05 Racal Safety Ltd. Breathing apparatus
SE447792B (sv) * 1985-04-30 1986-12-15 Teno Ab Anordning vid skyddsmask
US7222678B2 (en) * 2003-03-10 2007-05-29 Paradise Industry Co., Ltd. Sprinkler head

Also Published As

Publication number Publication date
AU6328790A (en) 1991-04-11
US5065745A (en) 1991-11-19
HUT55246A (en) 1991-05-28
HU906272D0 (en) 1991-03-28
AU631458B2 (en) 1992-11-26
DE59001778D1 (de) 1993-07-22
CH679122A5 (xx) 1991-12-31
EP0420812A1 (de) 1991-04-03
JPH03121080A (ja) 1991-05-23
HU207232B (en) 1993-03-29

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