Chemical apparatus and process disinfecting – deodorizing – preser – For deodorizing of – or chemical purification of – or... – Including means adding material into environmental gas
Patent
1996-09-20
1998-03-31
Cain, Edward J.
Chemical apparatus and process disinfecting, deodorizing, preser
For deodorizing of, or chemical purification of, or...
Including means adding material into environmental gas
2521861, 25218621, 25218638, 25218643, 25218731, 422120, A62B 708
Patent
active
057335087
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates in general to oxygen producing devices, more specifically to devices for oxygen production by thermal decomposition of a solid oxygen-containing substance.
BACKGROUND ART
Known in the art are oxygen generation by thermal decomposition of a solid oxygen-containing substance. British Patent 1,283,819 (Int. Cl. G01B 13/02, published 1972) can be adduced as an example which recites an oxygen generator, comprising a shell accommodating a solid oxygen-containing substance. The substance appears as a briquette (called "the candle" in the patent under discussion) having an axial passage filled with a filtering medium, while located in the upper portion of said passage is a resistive heater connected to a source of electric power. Once the heater has been energized, the candle of the oxygen-containing substance is ignited, and the resultant oxygen is passed through the filter in the candle passage and is discharged through an outlet union in the generator shell.
The aforediscussed generator is a disposable source of oxygen and is subject to replacement after the candle of the oxygen-containing substance has burnt up.
Among the hitherto-known oxygen-containing substances; capable of releasing oxygen upon being heated, a composition is noticeable according to U.S. Pat. No. 4,073,741 (NPC 252-187 published 1978). The composition comprises sodium perchlorate, silicon dioxide, and a cobalt-containing catalyst, and is featured by too a low decomposition rate upon being heated.
DISCLOSURE OF THE INVENTION
It is a principal object of the present invention to provide a repeated-use oxygen generator operating on solid oxygen-containing elements.
It is another object of the present invention to provide an oxygen generator featuring a controlled oxygen generating process.
It is one more object of the present invention to provide such an oxygen-containing composition that features a higher decomposition rate.
The principal object of the invention is accomplished due to the fact that in an oxygen generator having a shell provided with an outlet union and accommodating a briquette of an oxygen-containing composition having a recess or a through opening for a heater, said briquette is a replaceable one for which purpose it is enclosed in a protective sheathing. The heater is also enclosed in a casing which isolates it hermetically from both the briquette and the shell interior. It is due to the aforesaid construction arrangement that firstly the heater acquires the function of a carrier component on which the briquette is located ("put over"), and secondly, the products released by the heater itself are prevented from getting to the oxygen being generated.
The heater may be of diverse types. When an electric heater is used, its casing may be filled (fully or partly) with a heat-conducting material. A chemical heater can be made use of, wherein its casing is filled with chemical substances that interreact to release heat. To initiate such a heater at least one of the heat-releasing reagents is enclosed in a destructible container. In this case, inasmuch as the heater becomes consumable, it should be replaceable. To enhance heat transfer from the heater to the oxygen-containing briquette, the heater casing may be provided with a radiator and a metal sleeve may be fitted in the recess or through opening of the briquette.
The second of the foregoing objects of the invention, that is, control of the oxygen generating process, is accomplished due to the provision of an oxygen generator having a number of the oxygen-containing briquettes enclosed in the same shell. In this case the generator shell is provided with heat-insulating partitions interposed between the individual briquettes, each of them has its own heater. Such a construction arrangement of the oxygen generator makes it possible to provide for a successive, parallel, or combined operation of the individual briquettes, thereby effecting control of the oxygen-generating process. The aforedescribed generator can be built into
REFERENCES:
patent: 3573001 (1971-03-01), Bovard
patent: 3736104 (1973-05-01), Churchill et al.
patent: 3806323 (1974-04-01), Thompson
patent: 4073741 (1978-02-01), Heintz
patent: 4115069 (1978-09-01), Martin et al.
patent: 4209491 (1980-06-01), Ricn, III
patent: 4230667 (1980-10-01), Williams
Logunov Aleksei T.
Martyntsev Petr P.
Maslyaev Viktor S.
Shapovalov Valery V.
Smirnov Igor A.
Alexandr Grigorievich Vorobei
Cain Edward J.
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