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US3706535A Expired / Lapsed US ⏱️ 0.0 years remaining

Carbon monoxide burner for undersea habitats

Assignee: United States Department of the Navy
•
Filing: 1970-11-23
•
Granted: 1972-12-19
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Expires: 1990-11-23
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Abstract

Abstract Disclosed herewith is a burner system for removing carbon monoxide and other spurious impurities from gaseous atmospheres intended to be breathed by human beings while they are living and working in enclosed pressurized chambers or habitats located undersea or within other environments requiring life-support equipment. Included therein is a burner a burner system is disclosed as having a boiler-tube type heat exchanger for preheating the gaseous atmospheres supplied thereto for purification and for cooling the purified portions thereof immediately prior to their being exhausted into the habitat thereby. An atmospheric gas conduction passageway is operatively associated with said heat exchanger, and a compartment containing an oxidizing catalyst is disposed with respect thereto, so as to receive the atmospheric gas flowing through said passageway and supply it to the cooling portion of said heat exchanger. A heater is disposed for simultaneously heating said passageway and said catalyst, and a thermally insulated housing encapsulates all of the aforesaid components in order to contain them as a unit that is suitable for being located within said habitat. An instrumented temperature control system is also employed to sense and control the temperature of said passageway, and a blower is employed to supply the atmospheric gas to be purified to said burner at quantities and pressures required for any given operational circumstances.

Inventors

  • 👤 Lawrence B Taylor
  • 👤 Raymond L Bentz
  • 👤 Robert B Porter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 01:49
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/62; Y; Y02; Y02A; Y02A50/00; Y02A50/20

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 28 words
The device of claim 1, wherein said heat insulating housing comprises: a plurality of metallic walls; and a ceramic type insulation inserted between said plurality of metallic walls.
Claim 2
Dependent Claim 63 words
The device of claim 1, wherein said heat exchanger means is a boiler tube type of heat exchanger comprising: a first header plate funnel; a second header plate funnel; and a plurality of pipes connected between said first and second header plate funnels in such manner that gas may pass therethrough and through said gas entrance and gas exit means substantially without resistance.
Claim 3
Dependent Claim 53 words
The device of claim 1, wherein said second chamber means comprises: an open-ended pipe; and a pair of screens, each of which has a mesh sufficiently small to prevent said catalyst from passing therethrough but sufficiently large to pass said gaseous mixture therethrough, connected to the open ends of said open-ended pipe, respectively.
Claim 4
Dependent Claim 33 words
The device of claim 1, wherein said heater means comprises: a coil of nickel-chromium wire; and a plurality of electrical leads connected thereto adapted for being connected to a predetermined electrical power supply.
Claim 5
Dependent Claim 20 words
The device of claim 1, wherein said helium of the aforesaid gaseous mixtures constitutes ninety per cent thereof by volume.
Claim 6
Dependent Claim 28 words
The device of claim 1, wherein said means connected to said heat insulating housing for conducting the aforesaid gaseous mixture to the inside thereof comprises an intake pipe.
Claim 7
Dependent Claim 30 words
The invention for claim 7 further characterized by a regulatable blower means connected to said intake pipe for supplying the aforesaid gaseous mixtures thereto in predetermined quantities and predetermined pressures.
Claim 8
Dependent Claim 232 words
A burner for removing carbon monoxide from a pressurized gaseous mixture of helium and air, comprising in combination: an insulated housing; a boiler tube type 2 heat exchanger disposed in said housing; an entrance pipe extending through the wall of said insulated housing in such manner that a gas passing therethrough impinges on the external surfaces of the tubes of said boiler tube type heat exchanger; a first chamber supported within said insulated housing, said first chamber having a closed end and an open end; a plurality of holes located in the wall of said first chamber at the end opposite the open end thereof; a first screen connected across the open end of said first chamber; a second chamber having open ends, with one of the open ends thereof connected to said first screen; a second screen connecteD across the other open end of said second chamber; a catalyst containing a predetermined mixture of copper oxide and manganese dioxide disposed in said second chamber between said first and second screens; means contiguously disposed with said first and second chambers for heating a gas passing therethrough and said catalyst; a conduit means connected between said second screen and the gas entrance of the aforesaid boiler tube type heat exchanger; and an exhaust pipe connected to the output of said boiler tube type heat exchanger extending through the wall of said insulated housing.
Claim 9
Dependent Claim 63 words
The invention of claim 9 further characterized by: a temperature sensor extending through the wall of said insulated housing and into said first chamber for sensing the temperature of the gas passing therethrough; and means connected between said temperature sensor and the aforesaid gas heating means for controlling the temperature of the gaseous mixtures passing through said first chamber at a preset temperature.
Claim 10
Dependent Claim 29 words
The invention of claim 10 further characterized by blower means connected to the aforesaid entrance pipe for supplying said gaseous mixtures thereto in predetermined quantities and at predetermined pressures.

References Cited (Backward Citations)

US191868A Cited
US1298889A Cited
US1422211A Cited
US3306351A Cited
US3490878A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-12-19 1976-06-19 1976-12-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-12-19 1980-06-19 1980-12-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-12-19 1984-06-19 1984-12-19 $7700.00 Window Closed / Lapsed

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