DE1708117C3 - Pressure reducer for breathing apparatus - Google Patents
Pressure reducer for breathing apparatusInfo
- Publication number
- DE1708117C3 DE1708117C3 DE1708117A DE1708117A DE1708117C3 DE 1708117 C3 DE1708117 C3 DE 1708117C3 DE 1708117 A DE1708117 A DE 1708117A DE 1708117 A DE1708117 A DE 1708117A DE 1708117 C3 DE1708117 C3 DE 1708117C3
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- valve
- valve seat
- closure body
- piston
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7795—Multi-stage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7801—Balanced valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7809—Reactor surface separated by apertured partition
- Y10T137/781—In valve stem
- Y10T137/7811—Also through reactor surface
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- General Health & Medical Sciences (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Control Of Fluid Pressure (AREA)
Description
ventil dagegen, welches mit der Lunge gesteuert ist, Fläche des Verschlußkörpers beaufschlagende Hochreduziert
den Mitteldruck auf den Atmungsdruck. Druck bei geschlossenem Druckminderer durch den
Bei bekannten Druckminderern für Atemschutzge- 40 gleichgroßen Druck in dem Raum des Verschlußräte
mit einem kolben- oder membrangesteuerten Ver- körpers, dessen andere Stirnseite von dem sich am
schlußkörper sind die Verschlußkörper als Vollkör- Ventilgehäuse abstützenden Hilfskolben abgeschlosper
ausgebildet. Deshalb ist die Größe der vom sen ist, ausgeglichen, öffnet sich der Verschlußkör-Druck
beaufschlagten Flächen auf der dem Ventilsitz per durch ein Absinken des Mitteldruckes, so wird
zugewendeten Seite des Verschiußkörpers bei geöff- 45 durch den Hilfskolben bei der Öffnungsbewegung
netem Druckminderer um so viel größer, wie die des Verschlußkörpers das in dem Raum befindliche
Größe der Ventilsitzfläche beträgt. Ein Nachteil die- Gas verdichtet und hierdurch der in öffnungsrichser
bekannten Druckminderer liegt darin, daß sie die tung wirkende größere Druck ebenfalls ausgeglichen.
Konstanz des Mitteldruckes nicht sichern können, Dadurch ist die vom Gasdruck herrührende, auf den
welcher mit dem Abfall des Druckes in der Luftfla- 50 Verschlußkörper einwirkende Kraft in beiden Stelsche
zunimmt. lungen des Verschlußkörpers kompensiert, und zwar Mit einer Vereinfachung kann vorausgesetzt wer- unabhängig von dem in der Luftflasche herrschenden
den, daß der Zuwachs des Mitteldruckes nur von der Druck, so daß bei allen Drücken in der Luftflasche
Fläche der Ventilsitzöffnung abhängt. Ein höherer stets ein konstanter Mitteldruck aufrechterhalten ist.
Druck der Luft aus der Luftflasche bewirkt eine grö- 55 Der erfindungsgemäße Druckminderer ist in seißere
Zunahme des Mitteldruckes. Diese Änderungen nem Aufbau einfach und erlaubt es, eine große Venbewirken
veränderliche Atmungswiderstände und be- tilsitzöffnung vorzusehen, wodurch ein beliebiger
cinflussen die Atmungscharakteristik des Gerätes Luftbedarf gedeckt werden kann, ohne daß dabei,
nachteilig. Durch Verwendung einer kleinen Ventil- wie oben erläutert, der auf der Niederdruckseite des
sitzöffnung werden diese Nachteile in gewissem 60 Druckminderers herrschende Mitteldruck bei abfal-Maße
beseitigt, jedoch wird dadurch bei höherem lendem Druck in der Luftflasche steigt.
Luftbedarf eine erhebliche Drosselung der Luftströ- Die Erfindung soll nachstehend an einem Ausfühmung
verursacht. rungsbeispiel näher erläutert werden. In der Zeich-valve, on the other hand, which is controlled with the lungs, surface of the closure body acting on Highly reduced the mean pressure to the respiratory pressure. Pressure when the pressure reducer is closed by the pressure reducers for respiratory protection devices of the same size in the space of the lock council with a piston or membrane-controlled body, the other end of which is designed as a full-body valve housing supporting auxiliary piston. Therefore, the size of the valve body is balanced, if the pressure-exerted surface on the valve seat opens due to a decrease in the mean pressure, the side of the valve body facing is opened by the auxiliary piston during the opening movement of the pressure reducer much larger than that of the closure body is the size of the valve seat surface located in the space. A disadvantage of the gas compresses and thereby the pressure reducer known in öffnungsrichser is that it also compensates for the greater pressure acting on the device. Cannot ensure constancy of the mean pressure. As a result, the pressure originating from the gas and on which the force acting on the pressure drop in the air bottle increases in both positions. lungs of the closure body compensated, with a simplification it can be assumed, regardless of the prevailing in the air bottle, that the increase in the mean pressure depends only on the pressure, so that at all pressures in the air bottle the area of the valve seat opening depends. A higher always a constant mean pressure is maintained. The pressure of the air from the air bottle causes a greater increase in the mean pressure. These changes are simple in structure and make it possible to provide a large amount of variable breathing resistance and valve seat opening, which means that any influencing of the breathing characteristics of the device can be covered for air without being disadvantageous. By using a small valve, as explained above, on the low-pressure side of the seat opening, these disadvantages are eliminated in the case of a certain medium pressure in the case of waste, but this increases with a higher lumbar pressure in the air bottle.
Air requirement causes a considerable throttling of the air flow. example are explained in more detail. In the drawing
Es wurde auch bereits ein Druckminderer vorge- nung zeigtA pressure reducer has also already been shown
schlagen, welcher mit einer ständig in den Atmungs- 65 Fig. 1 einen senkrechten Längsschnitt durch ein
sack dosierenden GasdUse ausgestattet ist, der somit Reduzierventil gemäß der Erfindung.
nut in Sauerstoffgeräten mit geschlossenem Umlauf Das Reduzierventil besteh; aus einem Ventilge-beat, which is equipped with a gas nozzle that is constantly in the breathing 65 Fig. 1 a vertical longitudinal section through a sack metering gas nozzle, thus the reducing valve according to the invention.
only in oxygen devices with closed circulation The reducing valve consists; from a valve
des Atmungsgases eingesetzt werden kann. Bei die- häuse 1, einer das Ventil an der Flasche befestigen-of the breathing gas can be used. At the- housing 1, one attach the valve to the bottle-
den Mutier 3, einem Ventilsitz 4 mit einer Drossel-the Mutier 3, a valve seat 4 with a throttle
0K1VT .Τ"1" fÜf einen Ventilkö^er 7 mit einem Kolben 11 und einem zum Verschluß de Vent; sites geeigneten stumpfen Ende 6, einer das Ventil öffnenden Feder 10, einem Gehausedeckel 12 einem kleinen Kolben 16 und aus den die S 0 K 1 VT .Τ " 1 " for a valve body 7 with a piston 11 and a valve for closing the vent; sites suitable blunt end 6, a valve opening spring 10, a housing cover 12, a small piston 16 and from which the S
l5 Ϊ e 5 l5 Ϊ e 5
det werden weiche mn dem Kolbenschaft 7 und dem üehausedeckel 12 verbunden istdet are soft mn the piston skirt 7 and the üehausedeckel 12 is connected
Das oben beschriebene Ausführungsbeispiel kann in zum Tauchen dienenden oder in die Umgebung"-Base von dem menschlichen Atmungssystem trennenden Geraten verwendet werdenThe embodiment described above can be used in or in the environment "base devices separating the human respiratory system
ist w^folgl·""8^56 deS erfindungsgemäßen Ventils Vor Zuführung von komprimierter Luft aus der Luftflasche hält die auf "Jen Kolben 11 ausgeübte Druckkraft der Feder 10 den Ventilteller 6 in seiner »ofFen«-Lage. Nach dem öffnen des Flaschenverschlusses, etwa eines Ventils, strömt Luft aus der Flasche durch die Leitung 2 und die Kammer 5 /.u der Leitung 20, welche die Luft dem Atmungsautomaten zuführt. Die Luft gelangt auch durch die Öffnung 18 und den Schlitz 1.4 zu dem Raum Π oberhalb des Kolbens 11.is w ^ folgl · "pressure force exerted Jen piston 11" 8 ^ 56 of erfindun g s proper valve before supplying compressed air from the air bottle on hold "of the spring 10 the valve plate 6 'in its" open -layer. After opening of the bottle cap, such as a valve, air flows out of the bottle through the line 2 and the chamber 5 / .u of the line 20, which feeds the air to the breathing apparatus. The air also passes through the opening 18 and the slot 1.4 to the space Π above the piston 11.
Wenn ein entsprechender Wert des reduzierten Drucks erreicht wird, überwindet der auf den Kolben II ausgeübte Druck den Federwiderstand 10 und bewirkt eine Verschiebung des Kolbens und somit da^ Schließen des Ventilsitzes 4. Gleichzeitig strünu durch die Öffnung 22 Luft in den durch den sich gc gen den Gehäusedeckel 12 stützenden kleinen Kolben 16 abgeschlossenen Rauui 21 hinein, wodurch eine feststehende Lage des klv.iien Kolbens 16 gegenüber dem Ventilsitz 4 erzielt wird.When a corresponding value of the reduced pressure is reached, the pressure on the piston overcomes II exerted pressure causes the spring resistance 10 and a displacement of the piston and thus the closing of the valve seat 4. Simultaneously strünu through the opening 22 air into the small piston supported by the housing cover 12 16 completed Rauui 21 into it, whereby a fixed position of the small piston 16 opposite the valve seat 4 is achieved.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL117924A PL55641B1 (en) | 1966-12-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1708117A1 DE1708117A1 (en) | 1971-04-22 |
DE1708117B2 DE1708117B2 (en) | 1973-06-28 |
DE1708117C3 true DE1708117C3 (en) | 1974-01-31 |
Family
ID=19949574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1708117A Expired DE1708117C3 (en) | 1966-12-12 | 1967-12-08 | Pressure reducer for breathing apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US3522818A (en) |
DE (1) | DE1708117C3 (en) |
FR (1) | FR1548799A (en) |
GB (1) | GB1204356A (en) |
SE (1) | SE330130B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2222634C3 (en) | 1971-05-10 | 1978-11-30 | Lear Siegler, Inc. (N.D.Ges.D. Staates Delaware), Anaheim, Calif. (V.St.A.) | Portable breathing apparatus with a coiled pipe as a pressure vessel for breathing air under high pressure |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3866622A (en) * | 1972-03-18 | 1975-02-18 | Kawasaki Heavy Ind Ltd | Open circuit breathing apparatus |
CH608718A5 (en) * | 1975-01-20 | 1979-01-31 | Scubapro Eu | |
DE2544001A1 (en) * | 1975-10-02 | 1977-04-07 | Schneider Co Optische Werke | PRESSURE VALVE |
US4146275A (en) * | 1977-10-11 | 1979-03-27 | Elliott Robert H | Residual pressure relief valve for brakes |
US4243031A (en) * | 1978-12-18 | 1981-01-06 | Abbott Laboratories | Intravenous pump filter protector |
EP0112765A1 (en) * | 1982-12-20 | 1984-07-04 | Litton Systems, Inc. | Combined pressure-reducing regulator and shutt-off valve |
US4652216A (en) * | 1984-05-21 | 1987-03-24 | Allied Corporation | Compressor inlet control device |
GB2182421B (en) * | 1985-09-11 | 1989-09-20 | Actrol Ind Pty Ltd | Pressure control valve |
AU581536B2 (en) * | 1985-09-11 | 1989-02-23 | Actrol Industries Pty. Ltd. | Pressure control valve |
US5095939A (en) * | 1991-06-13 | 1992-03-17 | Allied-Signal Inc. | Redundant pressurizing valve |
GB2269441B (en) * | 1992-08-05 | 1996-01-24 | Sabre Safety Ltd | A gas flow control regulator |
AU4753096A (en) * | 1996-01-11 | 1996-07-10 | Harsco Corporation | Eductive pressure regulator |
US5662100A (en) * | 1996-01-11 | 1997-09-02 | Harsco Corporation | Eductive pressure regulator |
WO2003023263A1 (en) * | 2001-09-07 | 2003-03-20 | Gebr. Gloor Ag | Reducing valve for compressed gas bottles |
JP3594925B2 (en) * | 2001-11-13 | 2004-12-02 | 株式会社カワサキプレシジョンマシナリ | Pressure reducing valve |
DE10219007B4 (en) * | 2002-04-27 | 2004-07-29 | DRäGER AEROSPACE GMBH | Reduction valve for compressed gas |
WO2003093708A1 (en) | 2002-05-06 | 2003-11-13 | Walter George Morrison | Pressure control valve |
US7712482B2 (en) | 2007-06-07 | 2010-05-11 | Kabushiki Kaisha Kawasaki Precision Machinery | Pressure-reducing valve |
CN107854784A (en) * | 2017-01-20 | 2018-03-30 | 湖北航天化学技术研究所 | A kind of oxygen breathing apparatus oxygen cylinder pile-up valve |
-
1967
- 1967-12-04 US US687763A patent/US3522818A/en not_active Expired - Lifetime
- 1967-12-06 FR FR1548799D patent/FR1548799A/fr not_active Expired
- 1967-12-06 GB GB55544/67A patent/GB1204356A/en not_active Expired
- 1967-12-08 SE SE16917/67A patent/SE330130B/xx unknown
- 1967-12-08 DE DE1708117A patent/DE1708117C3/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2222634C3 (en) | 1971-05-10 | 1978-11-30 | Lear Siegler, Inc. (N.D.Ges.D. Staates Delaware), Anaheim, Calif. (V.St.A.) | Portable breathing apparatus with a coiled pipe as a pressure vessel for breathing air under high pressure |
Also Published As
Publication number | Publication date |
---|---|
DE1708117B2 (en) | 1973-06-28 |
US3522818A (en) | 1970-08-04 |
SE330130B (en) | 1970-11-02 |
DE1708117A1 (en) | 1971-04-22 |
GB1204356A (en) | 1970-09-09 |
FR1548799A (en) | 1968-12-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |