EP0760700A1 - Breathing accessory with breathing apparatus - Google Patents
Breathing accessory with breathing apparatusInfo
- Publication number
- EP0760700A1 EP0760700A1 EP95916635A EP95916635A EP0760700A1 EP 0760700 A1 EP0760700 A1 EP 0760700A1 EP 95916635 A EP95916635 A EP 95916635A EP 95916635 A EP95916635 A EP 95916635A EP 0760700 A1 EP0760700 A1 EP 0760700A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- regulator
- breathing
- supply valve
- ambient air
- air supply
- 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
Links
Classifications
-
- 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
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
- A62B9/025—Breathing demand regulators with tilting opening action
Definitions
- the invention relates to a device for coupling a regulator to a breathing connection with at least one closable ambient air intake opening and a release switch for a cylinder air supply valve on the regulator.
- Protective suits or respiratory masks such as full face masks, half masks or respiratory protection hoods are considered as breathing connections. They are connected to an air supply, for example a breathing air bottle, a blower, etc., via an automatic lung regulator.
- an air supply for example a breathing air bottle, a blower, etc.
- Such a so-called heavy breathing apparatus is used, for example, by firefighters in fire situations where the ambient air contains toxic gases, smoke, etc.
- SPARE BLADE (RULE 26)
- a major disadvantage of this known device is that it takes time at the decisive moment and can therefore take too long until the connection piece of the regulator is inserted into the suction opening of the respiratory mask and the breathing is switched from ambient air to bottle air.
- the object of the present invention is therefore to develop a known device in such a way that this changeover can be carried out in the shortest possible time and without cumbersome handling.
- the coupling device for the breathing apparatus to the breathing connection has an actuator which, when the breathing apparatus is attached to the breathing connection, can be adjusted manually between a first position in which the ambient air intake opening is closed and at the same time the bottle air supply valve is released , and a second position, in which the ambient air intake opening is opened and at the same time the bottle air supply valve is blocked, in particular in its closed position.
- This invention has the advantage that a mask wearer can couple the lung automat to his respirator already when the respirator is put on, without bottle air already flowing into the respirator.
- the mask wearer can approach the actual place of use and still breathe ambient air in order to protect his bottle air supply, and only at the place of use with a short manual If you actuate an actuator, switch your breathing air from ambient air to bottle air. This is considerably faster and easier than the cumbersome, time-consuming insertion of the regulator with its connecting piece into the suction opening, as has been done up to now.
- Switching back to ambient air can also be carried out quickly and easily, since for this purpose only the actuator has to be returned to the other position in which the ambient air intake opening is opened and at the same time the bottle air supply valve is locked in its closed position.
- the adjustment of the actuator can take place either via a rotary or a swivel movement, but in a preferred embodiment the actuator is formed directly by the connecting piece for the lung automat and can be actuated in particular by displacing the regulator. This means that the actuator is actuated and the air supply is switched over with a simple push from the front onto the lung automats, while switching back at the lung automats during a subsequent train. So that the changeover from one state to the other does not occur unintentionally, it is advantageous if the actuator can be locked in the two end positions, so that a small initial resistance has to be bridged when it is actuated.
- the actuator can lock itself in a preferred embodiment. This ensures that in a situation in which the inhalation of ambient air would be harmful due to the gases contained in it, an accidental switching back of the actuator is prevented.
- FIG. 1 shows a coupling device according to the invention with an open ambient air intake opening and a blocked bottle air supply valve
- Figure 2 shows a coupling device according to the invention with closed ambient air intake opening and released bottle air supply valve.
- FIG. 1 shows a regulator 1, which is coupled to a respirator 2.
- a viewing window 4 is inserted into a mask body 3.
- a coupling element 5 is tightly connected to the mask body 3.
- the coupling element 5, which is provided with an external thread is screwed into a corresponding thread located on the mask body 2.
- a connecting piece 6 of the regulator 1 can be moved.
- the connecting piece 6 with a prestressed element 7 can snap into locking grooves 8, 9 which are formed in the coupling element 5.
- annular seal 10 is also between the coupling element 5 and the connecting piece 6 which prevents secondary air from being drawn through the gap formed between coupling element 5 and connecting piece 6.
- the connecting piece 6 In its area lying outside the coupling element 5, the connecting piece 6 has a plurality of ambient air suction openings 11 distributed over its circumference, through which ambient air can flow into the interior of the mask in accordance with the arrows 12 when the mask wearer inhales.
- the connecting piece 6 At its end facing away from the coupling element 5, the connecting piece 6 carries the lung automat 1, with which a bottle air supply valve 13 can be actuated. This valve is shown in the closed position in FIG. It closes line 14, which leads to a breathing air bottle.
- the bottle air supply valve is connected to a movable breathing membrane 16 via a linkage 15.
- the linkage 15 is articulated on a rocker arm 17 which is connected to a release switch 18 which is guided outwards from the housing of the regulator.
- this release switch 18 brings the rocker arm 17 into a position which blocks the bottle air supply valve in its closed position.
- the connecting piece 6 has been moved into the coupling element 5 of the mask body 3 until it engages with the prestressed element 7 in the locking groove 8 located further inside.
- the end of the coupling element 5 facing the regulator 1 seals in cooperation with a second ring seal 19 from the ambient air intake openings 11.
- the release switch 18 is actuated simultaneously with a collar 20 formed on the coupling element 5.
- the rocker arm 17 tilts into a position in which the bottle air supply valve 13 can be actuated via the linkage 15 through the breathing membrane 16:
- the space that is to the left of the breathing membrane 16 in FIG. 2 is produced is shown, a negative pressure, which the membrane 16 follows.
- the bottle air supply valve 13 is moved downward via the linkage 15 and thus opens the line 14, so that bottle air can flow to the mask carrier in accordance with the arrows 21. If the mask wearer exhales, the negative pressure is released and the breathing membrane 16 moves back into its original position, the valve 13 being closed and bottle air not being consumed unnecessarily.
- the device shown works as follows: after the mask wearer has put on the breathing mask 2, he introduces the regulator 1 connected via line 14 to a breathing air bottle with its connecting piece 6 into the coupling element 5 of the breathing mask, which is connected with a Ge ⁇ winch is screwed into the mask body 2.
- the connecting piece engages in the first locking groove 9.
- ambient air can flow through the ambient air intake openings 11 into the breathing mask when the mask wearer inhales.
- the mask wearer pushes the regulator 1 with its connecting piece 6 all the way into the locking groove 8 into the coupling element 5, the ambient air intake openings 11 being closed on the one hand and the release switch 18, with which the Bottle air supply valve 13 is released for breathing. So that the regulator does not move out of this position unintentionally, the locking hook 22 simultaneously locks it in this position.
- the mask carrier unlocks the locking hook 22 and pulls the regulator 1 back into the first position.
- the ambient air intake openings 11 are opened again and at the same time the actuation of the bottle air supply valve is blocked, since the release switch 18 slides back into its original position.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4418788 | 1994-05-24 | ||
DE4418788A DE4418788A1 (en) | 1994-05-24 | 1994-05-24 | Breathing connection with regulator |
PCT/EP1995/001346 WO1995032023A1 (en) | 1994-05-24 | 1995-04-12 | Breathing accessory with breathing apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760700A1 true EP0760700A1 (en) | 1997-03-12 |
EP0760700B1 EP0760700B1 (en) | 1999-10-27 |
Family
ID=6519292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95916635A Expired - Lifetime EP0760700B1 (en) | 1994-05-24 | 1995-04-12 | Breathing accessory with breathing apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0760700B1 (en) |
DE (2) | DE4418788A1 (en) |
WO (1) | WO1995032023A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015027390A1 (en) | 2013-08-27 | 2015-03-05 | Honeywell International Inc. | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
EP3397353A4 (en) * | 2015-12-30 | 2019-06-26 | Scott Technologies, Inc. | Respirator mask with air-saver switch |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9619459D0 (en) * | 1996-09-18 | 1996-10-30 | Jackson Peter J | Breathing apparatus |
US6412485B1 (en) * | 1998-12-11 | 2002-07-02 | Carl J. Saieva | Surface breathing vent for breathing apparatus |
US6467483B1 (en) * | 1999-07-28 | 2002-10-22 | Respironics, Inc. | Respiratory mask |
US6892729B2 (en) | 2001-11-20 | 2005-05-17 | Fisher & Paykel Healthcare Limited | Patient interfaces |
CN108472519B (en) * | 2015-11-13 | 2022-03-01 | 霍尼韦尔国际公司 | Automatic opening suction valve for emergency escape breathing equipment |
GB2575072B (en) * | 2018-06-27 | 2022-06-15 | Draeger Safety Uk Ltd | Demand regulator |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2749897C2 (en) * | 1977-11-08 | 1979-09-06 | Draegerwerk Ag, 2400 Luebeck | Lung-operated breathing gas valve for breathing apparatus |
US4345592A (en) * | 1980-09-10 | 1982-08-24 | A-T-O Inc. | Pressure demand regulator with automatic shut-off |
FR2511252A1 (en) * | 1982-04-02 | 1983-02-18 | Fenzy Sa | TIP FOR RESPIRATORY APPARATUS FOR CONNECTING THE MASK TO A BOTTLE OF RESPIRATORY GAS |
DE3615664A1 (en) * | 1985-05-10 | 1986-11-13 | Krieger, Friedrich-Wilhelm, 8240 Berchtesgaden | Device for artificial ventilation via an ABC protective mask |
FR2646089B1 (en) * | 1989-04-21 | 1991-09-27 | Fenzy Sa | INTERMEDIATE CONNECTION FOR BREATHING APPARATUS |
US5000174A (en) * | 1989-10-03 | 1991-03-19 | Cairns & Brother Inc. | Positive pressure breathing assembly and demand regulator therefor |
DE4237294C1 (en) * | 1992-11-05 | 1993-11-25 | Draegerwerk Ag | Breathing mask with positive pressure inside the mask |
-
1994
- 1994-05-24 DE DE4418788A patent/DE4418788A1/en not_active Withdrawn
-
1995
- 1995-04-12 WO PCT/EP1995/001346 patent/WO1995032023A1/en active IP Right Grant
- 1995-04-12 EP EP95916635A patent/EP0760700B1/en not_active Expired - Lifetime
- 1995-04-12 DE DE59507142T patent/DE59507142D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9532023A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015027390A1 (en) | 2013-08-27 | 2015-03-05 | Honeywell International Inc. | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
EP3038716A4 (en) * | 2013-08-27 | 2017-04-12 | Honeywell International Inc. | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
EP3397353A4 (en) * | 2015-12-30 | 2019-06-26 | Scott Technologies, Inc. | Respirator mask with air-saver switch |
Also Published As
Publication number | Publication date |
---|---|
DE59507142D1 (en) | 1999-12-02 |
WO1995032023A1 (en) | 1995-11-30 |
EP0760700B1 (en) | 1999-10-27 |
DE4418788A1 (en) | 1995-11-30 |
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