EP0227672A1 - Process for the production of oxygen by a portable apparatus, particularly for human respiration and apparatus to carry out the process - Google Patents
Process for the production of oxygen by a portable apparatus, particularly for human respiration and apparatus to carry out the processInfo
- Publication number
- EP0227672A1 EP0227672A1 EP85904456A EP85904456A EP0227672A1 EP 0227672 A1 EP0227672 A1 EP 0227672A1 EP 85904456 A EP85904456 A EP 85904456A EP 85904456 A EP85904456 A EP 85904456A EP 0227672 A1 EP0227672 A1 EP 0227672A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxygen
- heat exchanger
- reactor
- lid
- interspace
- 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.)
- Pending
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 39
- 239000001301 oxygen Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 16
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229940045872 sodium percarbonate Drugs 0.000 claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229960001922 sodium perborate Drugs 0.000 claims abstract description 9
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229910003252 NaBO2 Inorganic materials 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 abstract 2
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- OWZREIFADZCYQD-NSHGMRRFSA-N deltamethrin Chemical compound CC1(C)[C@@H](C=C(Br)Br)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 OWZREIFADZCYQD-NSHGMRRFSA-N 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CDCHDCWJMGXXRH-UHFFFAOYSA-N estazolam Chemical compound C=1C(Cl)=CC=C(N2C=NN=C2CN=2)C=1C=2C1=CC=CC=C1 CDCHDCWJMGXXRH-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
- C01B13/0211—Peroxy compounds
Definitions
- PROCESS FOR THE PRODUCTION OF OXYGEN BY A PORTABLE APPARATUS, PARTICULARLY FOR HUMAN RESPIRATI O N A N D APPAR A TUS TO CARRY OUT THE PROCESS
- the present invention relates to a process for the production of oxygen by a portable apparatus, particularly for human respiration and an apparatus to carry out the process. It is known that it is possible to obtain oxygen
- the sodium percarbonate powder is poured into a vessel with water and subsequently the MnO. powder is poured starting the reaction.
- this reaction is strongly exothermic, it releases oxygen at high temperature and changes part of the water into steam, providing a mixture of
- reaction rate of sodium percarbonate it has also been proposed to differ the dissolution of the catalyst
- An aim of the invention is to avoid such drawbacks
- An other aim of the invention is to realize a
- sodium perborate can be used in a weight ratio of 1:1 - 1:2,
- salts such a Fe, Cu, Pb, etc. can be used.
- Figure 2 shows in vertical-longitudinal section a portable
- the water has the function of dissolving the components of the mixture and at the same time partially
- sodium perborate is between 1 :1 and 1:2, preferably
- the catalyst is preferably of the MnO , but in its
- metal salts such as Fe, Cu, Pb, etc. could be advantageously used.
- the sodium perborate which, as the sodium percarbonate, participates in the decomposition reaction has the essential function of reducing the decomposition
- reaction are thence made pass through an heat exchanger 2 in which the cooling of the oxygen and the partial condensation
- the lid 6 is provided with a gasket 7 which completely seals the external perimeter of the three containers 1, 2, 3 beside sealing the internal wall between the heat exchanger 2 and
- baffle 8 is provided in parallel to the walls of the overflow interspace 3.
- the other end section 12 of the coil 10 extends
- lid 6 which is of a
- the gaseous flow of oxygen and steam has passed from the reactor 1 to the overflow interspace 3 through the o upper connection leak and the labyrinth 5 which has provided to a first crack-down of solid elements in suspension as
- produced oxygen flow can be varied, according to the user's
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
On fait réagir un mélange de percarbonate de sodium et de perborate de sodium en présence d'un catalyseur approprié et d'eau à l'intérieur d'une cuve étanche (1) suivant la réaction 2Na2CO3. 3H2O2+ NaBO2.H2O2$(1,8)$Na2CO3+ NaBO2+ 4H2O + 2O2 et on fait passer l'oxygène gazeux et la vapeur saturée résultant de la réaction à travers un échangeur thermique (2) qui les refroidit et les déshumidifie.A mixture of sodium percarbonate and sodium perborate is reacted in the presence of a suitable catalyst and water inside a sealed tank (1) following the 2Na2CO3 reaction. 3H2O2+ NaBO2.H2O2$(1.8)$Na2CO3+ NaBO2+ 4H2O + 2O2 and the gaseous oxygen and the saturated vapor resulting from the reaction are passed through a heat exchanger (2) which cools and dehumidifies them.
Description
"PROCESS FOR THE PRODUCTION OF OXYGEN BY A PORTABLE APPARATUS, PARTICULARLY FOR HUMAN RESPIRATION AND APPARATUS TO CARRY OUT THE PROCESS"
The present invention relates to a process for the production of oxygen by a portable apparatus, particularly for human respiration and an apparatus to carry out the process. It is known that it is possible to obtain oxygen
for human respiration from the decomposition of sodium
percarbonate ( 2Na, CO .3H 0 ) according to the following reaction
2Na CO .3H 0 > 2Na CO + 1,502+ 3H 0
Such a decomposition is obtained in presence of a
catalyst, preferably MnO . In order to practically obtain
such a reaction the sodium percarbonate powder is poured into a vessel with water and subsequently the MnO. powder is poured starting the reaction. As this reaction is strongly exothermic, it releases oxygen at high temperature and changes part of the water into steam, providing a mixture of
oxygen/steam which cannoc be directly used for human
respiration due to its high temperature and its excessive
humidity content. Furthermore the high reaction rate is such
that the pressure inside the vessel quickly reaches high
values and makes it compulsory, for safety reasons, to build the vessel with suitable materials which, beside affecting
the production costs, make the whole set heavy in contrast
with the requirements of an easy handling.
To reduce the decomposition reaction rate of sodium
percarbonate it has been proposed to use large quantities of
water and to add very slowly the catalyst Mn02 to this and
to the sodium percarbonate. This by the way is not
obtainable with portable apparatus and even less in the
particularly conditions, generally in emergency, in which these apparatus are utilized, conditions which obviously do not allow the dosage of the catalyst and/or the sodium percarbonate with the correct timing and precision.
Always with the aim of reducing the decomposition
reaction rate of sodium percarbonate, it has also been proposed to differ the dissolution of the catalyst
Mn02 into the water, and this can be done using solids
composed of Mn02 powder treated with a solution of
polyvinyl alcohol with differentiated concentration. The
obtained solids, generally "balls" shaped, are mixed at the
moment of use with the sodium percarbonate powder. The
addition of water causes a reaction which, thanks to the different solubility of the polyvinyl cover, gradually
liberates the Mn02 thus allowing a control of the reaction.
With this measure with 300 g of sodium percarbonate and 600 g of water a production of 1-1,5 litres of oxygen is
obtainable for 20-30 minutes for a total of about 32 litres.
However this solution has not proved satysfactory
for the unavoidable formation, jointly with the oxygen
production, of steam in such a quantity which does not allow
the direct administration to patients, taking into account
amongst others the high temperature of the mixture oxygen/steam; it also has a certain cost due to the necessity of using Mn0_ previously treated with polyvinyl
alcohol.
An aim of the invention is to avoid such drawbacks
and to produce, in a simple and economical form, oxygen by a portable apparatus of extreme semplicity of use, immediatly
usable in whichever conditions, also in emergency.
An other aim of the invention is to realize a
portable apparatus which allows to produce oxygen directly
usable for human respiration.
These aims and others which will result from the following description are obtained, according to the invention, with a process for the production of oxygen by a portable apparatus, particularly for human respiration, characterized in that a mixture of sodium percarbonate and
sodium perborate, in presence of a suitable catalyst and
water, is made react within a tight vessel according to the
reaction
2Na2C03.3H202+ NaB02. H20., ——» 2Na2C03+ NaB02+ 4H20 + 202 and then the obtained gaseous oxygen and satured steam flow is made pass through an heat exchanger which cools and
dehumidifies it.
Advantageously a mixture of sodium percarbonate and
sodium perborate can be used in a weight ratio of 1:1 - 1:2,
preferably of 1 :1 ,15.
Also advantageously a MnO catalyst or other metal
salts such a Fe, Cu, Pb, etc. can be used.
In order to carry out the process, the invention
foresees the use of an apparatus comprising a reactor
connected to an heat exchanger from which the supply tube
containing oxygen and steam departs in such conditions as to allow the direct utilization for human respiration.
Advantageously the heat exchanger can be provided
with a coil submerged into a refrigerant liquid and connected to. the reactor.
Advantageously the reactor and the heat exchanger
can be built separately but mounted on a unique base and can be tight closed by a unique lid.
The present invention is hereinafter further
clarified with reference to the enclosed drawings in which:
Figure 1 schematically illustrates the principle on which
the process according to the invention is based,
Figure 2 shows in vertical-longitudinal section a portable
apparatus "according to the invention.
As it can be seen from the drawings the principle
on which the present invention is based is to allow, within
a portable apparatus, a decomposition reaction of a mixture
of sodium percarbonate (Na CO .1,5 H O ) and of sodium
perborate (NaBO . H O ) in presence of a suitable catalyst and water according to the reaction
2N2 CO, .3H,0 + NaBO...H O > 2Na CO + NaBO + 4H 0 +20
2 3 2 2 2 2 2 2 3 2 2 2
The water has the function of dissolving the components of the mixture and at the same time partially
absorbing the heat which develops from the strongly exothermic chemical reaction.
The weight ratio between the sodium percarbonate
and sodium perborate is between 1 :1 and 1:2, preferably
1 :1.15.
The catalyst is preferably of the MnO , but in its
place metal salts such as Fe, Cu, Pb, etc. could be advantageously used.
The sodium perborate which, as the sodium percarbonate, participates in the decomposition reaction has
the essential function of reducing the decomposition
reaction of the sodium percarbonate, reaction that otherwise
would be too strong and would take place in a too short time
with respect to the period of oxygen utilization.
The oxygen and steam flow which originate from the
reaction are thence made pass through an heat exchanger 2 in which the cooling of the oxygen and the partial condensation
of the steam take place, in order that the flow coming out from the heat exchanger 2 has pressure, temperature and humidity characteristics suitable for the direct human
respiration.
In order to carry out the process the invention
foresees the use of a portable apparatus consisting of three
containers, one being the reactor 1 from one side, one being
the shell of the heat exchanger 2 on the other side and the
third, interposed between the first two, being an overflow
interspace 3. The three containers 1 , 2 and 3 even if they are physically separed between themselves are mounted on a
unique base 1 and can be closed by one single lid 6. The lid 6 is provided with a gasket 7 which completely seals the external perimeter of the three containers 1, 2, 3 beside sealing the internal wall between the heat exchanger 2 and
the overflow interspace 3. In parallel to the walls of the
overflow interspace 3, in the lid 6 a baffle 8 is provided
extending itself inside the interspace 3 and forming,
jointly with the adjacent side wall of the reactor 1 , a
labyrinth 5. In the lower zone of the heat exchanger 2 a coil 10
is housed with an end section 11 extending upward to be connected with the overflow interspace 3 near the lid 6.
The other end section 12 of the coil 10 extends
along the bottom of the container 2 and it is provided at
its end with a suitable diffusor 13. At the section of the
lid 6 which closes the container 2 an outlet conduct 14 is
applied provided with a standard oxygen tube input
connection 4.
In order to carry out the process according to the
invention, water is poured into reactor 1 and heat exchanger
2. In the very moment of utilization firstly the catalyst and subsequently the sodium percarbonate and sodium perborate are poured into the reactor 1 and then the apparatus is closed with the lid 6. The mixture
decomposition gives start to the oxygen and steam generation which pass from reactor 1 through the labyrinth 5 into the
overflow interspace 3 and from here, through the conduct 11, to the coil 10.
a
Thence through the diffusor 13 they bubble in the shell of the heat exchanger 2. In the coil 10 the oxygen and steam are cooled down and dehumidified and made available,
through the conduct-14 and the connector 4, to a cannula or to a mask (not shown in the drawings) in suitable conditions
for human respiration.
The mixture of the above mentioned chemical
compound gives way to an exothermic reaction which increases
the volume of said mixture from two to three times. In the event that the liquid obtained from the
reaction goes over the capacity of the reactor 1 for self-effect or due to improper shaking, oscillation, inclination of the reactor during the reaction, the overflow interspace 3 collects the exceeding liquid without allowing
the same to overflow along the conduct 11 in the coil 10.
During the reaction the maximum pressure value
inside the reactor 1 is of 0.12 atm. Possible higher pressure, caused by the improper utilization of water at
temperature higher than that allowed, which can give way to
violent reactions or caused by the involuntary occlusion of
the connector 4, are self-regulated by lid 6 which is of a
pre-programmed bending type.
In fact the longitudinal structure 9 and the
material used for the construction of the lid 6 allow this
to bend in a pre-programmed way. The thickness and the
elasticity of the gasket 7 complete such an effect.
So it has been obtained that the lid 6 is
water-tight up to the internal pressure of 0.13 atm and that for higher pressure it discharges outside the exceeding
oxygen caused by said higher pressure, keeping at constant
values both the internal pressure as well has the oxygen
supply to the connector 4. The following example referred to the above described apparatus will further clarify the invention.
In the reactor 1 which has a capacity approximately of 1450 g, 400 cc of water at 20°C have been poured and
subsequently 4 g of MnO, with the function of catalyst has
been poured into it. In the heat exchanger 2, 500 cc of
water still at the temperature of 20°C have been poured. The
exact quantity of water to be poured into the containers 1
and 2 is easily identified by the two level signs 16 and 17
marked outside of each side container.
A mixture of powder composed by 163 g of sodium
percarbonate and by 143 g of sodium perborate has been
poured into the reactor 1. Immediately after, the lid 6 has been applied which ermetically closes, through the snap
to
clamps 18, the container 2 and only perimetrically the
containers 1 and 3.
The decomposition reaction of the mixture
immediately started which has so originated the- 5 substantially uniform generation of oxygen and steam. 32 liters of oxygen at a max. temperature of 68-70°C and a relative humidity of 100% have been totally obtained.
The gaseous flow of oxygen and steam has passed from the reactor 1 to the overflow interspace 3 through the o upper connection leak and the labyrinth 5 which has provided to a first crack-down of solid elements in suspension as
well as to a partial condensation of the steam. The eventual
solid elements and the condensation have been collected in
the lower zone of the overflow interspace 3. The gaseous
15 flow has thus passed, through the conduct 11 into the coil
10. Here it has cooled down reaching, through the
extreme-end 12, the diffusor 13 which has made it bubble into the refrigerant liquid. This operation has allowed the definitive washing of the gaseous flow eliminating even the
20 smallest solid parts possibly present and still in suspension and the reduction of oxygen alkalinity up to acceptable values for human respiration. At the end the gaseous flow, through the conduct 14 and the connector 4
.
comes out at an average temperature of 22°C and at a
relative humidity of 72%, that is in a suitable condition- for the human respiration.
This sperimental test has been carried out pouring as stated above, in the reactor 1 and in the heat exchanger
2 water at the same temperature (20°C) and obtaining at the outlet an oxygen flow of 1,6 litres per minute at a relative humidity of 72%. However these characteristics of the
produced oxygen flow can be varied, according to the user's
needs, with the simple variation of the temperature of the
water poured into the containers 1 and 2. As in fact it
results from the following table, when diminishing the water
temperature poured into the reactor 1 , the oxygen flow
diminishes and consequently the duration of the reaction in the reactor 1 increases. Beside the lowering of the water temperature inside the heat exchanger 2 also the relative humidity of the produced oxygen flow diminishes. If, for instance, instead of pouring into containers 1 and 2 water
at 20°C, water is poured at 30°C, for a duration of 15
minutes an average oxygen flow of 2.8 litres/minute with a
relative humidity of 78% is obtained. If the needs of the
user make compulsory both a precise value of oxygen flow as
well as its relevant humidity, it will be sufficient to pour
AVERAGE SUPPLY TABLE IN LITERS/MINUTE - WATER TEMPERATURE
into the reactor 1 water at the corresponding temperature to
the requested oxygen flow (shown in the relevant table) and,
in the heat exchanger 2, water at the corresponding
temperature to the requested relative humidity ( shown in the
relevant table).
Claims
1. A process for the production of oxygen by a
portable apparatus, particularly for human respiration, characterized in that water with a mixture of sodium percarbonate and sodium perborate in presence of a suitable
catalyst is made react within a tight vessel according to the reaction
2Na„C0„. 3H„0„+ NaBO„.H 0 > 2Na CO + NaBO + 4H 0 + 20„
2 3 2 2 2 2 2 2 3 2 2 2 and then the obtained gaseous oxygen and satured steam flow
is made pass through an heat exchanger (2) which cools and
dehumidifies it.
2. Process according to claim 1 characterized in that
a mixture of sodium percarbonate and sodium perborate in a
weight ratio of 1:1 - 1:2, preferably at 1 :1.15 is used.
3. Process according to claim 1 characterized in that
MnO is used as catalyst.
4. Process according to claim 1 characterized in that
metal salts such as Fe, Cu, Pb, etc. are used as catalysts.
5. An apparatus to carry out the process according to
claims 1 to 4 characterized in that it comprises a reactor
( 1 ) connected to an heat exchanger (2) from which the supply conduct (14) containing oxygen and steam departs in such
conditions to allow the direct utilization for human respiration.
6. Apparatus according to claim 5 characterized in that the heat exchanger (2) is provided with a coil (10)
submerged in a refrigerant liquid and connected to the
5 reaction ( 1 ).
7. Apparatus according to claim 4 characterized in
that between the reactor (1 ) and the heat exchanger (2) an
overflow interspace (3 ) is interplaced.
8. Apparatus according to claim 7 characterized in
o that the reactor ( 1 ), the heat exchanger ( 2) and the
overflow interspace ( 3 ) are built separately but are mounted
on a unique base (15) and are tight closed by a unique lid (6).
9. Apparatus according to claim 7 characterized in 5 that the coil (10) is provided, at the end not connected to the overflow interspace (3), with a diffusor (13) submerged
in the refrigerant liquid.
10. Apparatus according to claim 5 characterized in
that the oxygen and steam flow is made pass through the 0 labyrinth ( 5 ) consisting in a transversal baffle ( 8 )
integral with the lid ( 6 ) and extending in parallel to the
dividing wall between the reactor ( 1 ) and the overflow
interspace ( 3 ).
11. Apparatus according to claim 7 characterized in
that the lid (6) is of the preprogrammed flexibility type.
12. Apparatus according to claims 8 and 11
characterized in that the lid (6) is provided with a gasket
( 7 ) of sufficient thickness and elasticity such as to allow
the perfect seal up to a prefixed pressure.
13. Apparatus according to claim 5 characterized in
that to the supply conduct (14) a connector (4) for an oxygen standard tube input is applied.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8413184 | 1984-09-28 | ||
| IT8484131A IT1214865B (en) | 1984-09-28 | 1984-09-28 | PROCEDURE FOR THE PRODUCTION OF OXYGEN THROUGH PORTABLE EQUIPMENT, PARTICULARLY BY HUMAN BREATHING, AND EQUIPMENT TO IMPLEMENT THE PROCEDURE. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0227672A1 true EP0227672A1 (en) | 1987-07-08 |
Family
ID=11324497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85904456A Pending EP0227672A1 (en) | 1984-09-28 | 1985-09-16 | Process for the production of oxygen by a portable apparatus, particularly for human respiration and apparatus to carry out the process |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0227672A1 (en) |
| AU (1) | AU4800685A (en) |
| IT (1) | IT1214865B (en) |
| WO (1) | WO1986002063A1 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900001392A (en) * | 1988-07-01 | 1990-02-27 | 원본미기재 | Oxygen generator |
| CH683521A5 (en) * | 1991-05-04 | 1994-03-31 | Aschwanden Ag Sulfurex Technik | Incendiary gel for burning petroleum on liq or solid substrate - contg. solvent, opt. anionic surfactant and swelling agent, primer for igniting, and used for burning fresh and aged petroleum |
| US6123069A (en) * | 1993-11-15 | 2000-09-26 | Davis; James E. P. | Oxygen breathing system with programmed oxygen delivery |
| DE19602149A1 (en) * | 1996-01-22 | 1997-07-24 | Riera Gertraud Canavate | Means for releasing oxygen in oxygen generators |
| EP0867201A3 (en) * | 1997-03-24 | 2000-10-18 | Gertraud Canavate Riera | Apparatus for generation of oxygen |
| US20060269454A1 (en) * | 2003-11-20 | 2006-11-30 | Julian Ross | Method and apparatus for generating oxygen |
| US20050112035A1 (en) * | 2003-11-20 | 2005-05-26 | Julian Ross | Method and apparatus for generating oxygen |
| US7407632B2 (en) | 2004-05-28 | 2008-08-05 | Oxysure Systems, Inc. | Apparatus and delivery of medically pure oxygen |
| US7465428B2 (en) | 2005-01-28 | 2008-12-16 | Oxysure Systems Inc. | Method and apparatus for controlled production of a gas |
| CN100422452C (en) * | 2006-11-10 | 2008-10-01 | 浙江中南建设集团有限公司 | Hollow glass curtain wall with invisible frame and hollow glass plate for use in curtain wall |
| CN102824677B (en) * | 2012-09-19 | 2015-03-11 | 河北联合大学 | Ring-pull emergency oxygen production bag |
| EP3323780B1 (en) | 2016-11-18 | 2020-05-20 | Diehl Aviation Gilching GmbH | Compositions comprising ionic liquids and peroxides |
| EP3323470B1 (en) | 2016-11-18 | 2022-06-29 | Diehl Aviation Gilching GmbH | Oxygen generator using ionic liquids |
| EP3323782B1 (en) | 2016-11-18 | 2019-08-14 | Diehl Aviation Gilching GmbH | Oxygen generating compositions comprising ionic liquids |
| EP3323471B1 (en) | 2016-11-18 | 2020-05-13 | Diehl Aviation Gilching GmbH | Device for generating oxygen |
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| EP3428119B1 (en) | 2017-07-14 | 2020-09-09 | Diehl Aviation Gilching GmbH | Composition and method for generating oxygen from peroxides in ionic liquids |
| CN110357041A (en) * | 2018-04-11 | 2019-10-22 | 迈奇曼德（北京）科技有限责任公司 | A kind of environment pH value control method of carbamide peroxide oxygen preparation |
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| DE102021127788A1 (en) | 2021-10-26 | 2023-04-27 | Diehl Aviation Gilching Gmbh | Composition for generating oxygen |
| DE102022110173A1 (en) | 2022-04-27 | 2023-11-02 | Diehl Aviation Gilching Gmbh | Composition for producing oxygen |
| DE102022110174A1 (en) | 2022-04-27 | 2023-11-02 | Diehl Aviation Gilching Gmbh | Composition for producing oxygen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR369468A (en) * | 1906-09-04 | 1907-01-12 | Martin Bayod Y Martinez | Automatic device for the instantaneous production of oxygen |
| GB191010066A (en) * | 1909-04-26 | 1911-01-05 | Leopold Sarason | A Process for the Development of Oxygen. |
| US3421842A (en) * | 1965-09-30 | 1969-01-14 | Fmc Corp | Process for producing effervescent perborate compounds |
| JPS5292717A (en) * | 1976-01-30 | 1977-08-04 | Yashica Co Ltd | Electric shutter circuit |
| JPS6044242B2 (en) * | 1982-04-27 | 1985-10-02 | 株式会社星子療科研究所 | How to generate oxygen in an emergency |
-
1984
- 1984-09-28 IT IT8484131A patent/IT1214865B/en active
-
1985
- 1985-09-16 AU AU48006/85A patent/AU4800685A/en not_active Abandoned
- 1985-09-16 WO PCT/EP1985/000474 patent/WO1986002063A1/en unknown
- 1985-09-16 EP EP85904456A patent/EP0227672A1/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8602063A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4800685A (en) | 1986-04-17 |
| WO1986002063A1 (en) | 1986-04-10 |
| IT8484131A0 (en) | 1984-09-28 |
| IT1214865B (en) | 1990-01-18 |
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