IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0780123
(2004-02-17)
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등록번호 |
US-7353689
(2008-04-08)
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발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
Andrus, Sceales, Starke & Sawall, LLP
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인용정보 |
피인용 횟수 :
1 인용 특허 :
10 |
초록
▼
Liquid separator for a gas analyzer and method for separating a liquid component from gas. The liquid separator comprises an input passage having an input end and an output end, an output passage having an input end and an output end, a wall formed of a gas permeable and liquid impermeable material
Liquid separator for a gas analyzer and method for separating a liquid component from gas. The liquid separator comprises an input passage having an input end and an output end, an output passage having an input end and an output end, a wall formed of a gas permeable and liquid impermeable material separating the input passage and the output passage, means for introducing a gas sample containing liquid through the input end into the input passage with a first portion of the gas passing through said wall to the output passage and a second portion of the gas and the liquid remaining in the input passage, a vacuum means for flowing the first portion of the gas through the output end from the output passage to a measuring unit, a first conduit connecting the output end of the input passage and for conducting the second portion of the gas and the liquid furtheron with vacuum means. The output passage is arranged to widen towards the output end of the output passage and/or the input passage is arranged to narrow towards the output end of the input passage.
대표청구항
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The invention claimed is: 1. A liquid separator for removing liquid from a gas to be analyzed in a gas analyzer, said liquid separator comprising: an input passage having an input end to which a gas sample containing liquid is supplied, the input passage having an output end; an output passage havi
The invention claimed is: 1. A liquid separator for removing liquid from a gas to be analyzed in a gas analyzer, said liquid separator comprising: an input passage having an input end to which a gas sample containing liquid is supplied, the input passage having an output end; an output passage having a first end and a second, output end; and a wall formed of a gas permeable and liquid impermeable material separating the input passage and the output passage in a region lying between the ends of the passages and along which region the passages lie on opposite sides of said wall, a first portion of the gas passing, in said region, through said wall from the input passage to the output passage for discharge from the output end of the output passage as the gas to be analyzed, a second portion of the gas sample and the liquid remaining in the input passage for discharge from the output end of the input passage; the output passage being formed such that the cross sectional area of the output passage taken generally transverse to a flow direction in the output passage increases in a tapered manner along the flow direction toward the output end of the output passage in at least a portion of the region along the passages in which the passages lie on opposite sides of said wall, the tapering being in an amount that causes the flow of gas along the passages to generate similar gas velocity profiles along the input and output passages. 2. The liquid separator of claim 1 wherein a tapered portion of the output passage extends over at least about half of the output passage length along said region. 3. The liquid separator of claim 2 wherein the input passage is formed such that the cross sectional area of the input passage taken generally transverse to a flow direction in the input passage decreases in a tapered manner along the flow direction toward the output end of the input passage in at least a portion of the region along the passages. 4. The liquid separator of claim 3 wherein the tapered portion of the input passage extends over at least about half of the input passage length in said region. 5. The liquid separator of claim 1 wherein the input passage is formed such that the cross sectional area of the input passage taken generally transverse to a flow direction in the input passage decreases in a tapered manner along the flow direction toward the output end of the input passage in at least a portion of the region along the passages. 6. The liquid separator of claim 5 wherein a tapered portion of the input passage extends over at least about half of the input passage length in said region. 7. The liquid separator of claim 6 wherein the input passage and the output passage are concentric tubular passages separated from each other by a tubular and cone shaped wall formed of a gas permeable and liquid impermeable material, the cone shaped wall tapering toward the output ends of the passages along said region. 8. The liquid separator of claim 5 wherein the cross sectional area profiles of the input and output passages are formed by positioning said wall separating the input and output passages in an angular position with respect to longitudinal flow directions of the input and output passages. 9. The liquid separator of claim 3 wherein a vacuum means is connectable to the output end of the output passage by using a conduit connected without bends to the output end of the output passage. 10. The liquid separator of claim 5 wherein the input passage and the output passage are concentric tubular passages separated from each other by a tubular and cone shaped wall formed of a gas permeable and liquid impermeable material, the cone shaped wall tapering toward the output ends of the passages along said region. 11. The liquid separator of claim 5 Wherein said output passage and said input passage are formed such that the cross sectional area increase in the former and the cross sectional area decrease in the latter cause similar gas velocity profiles along the passages. 12. The liquid separator of claim 1 wherein a vacuum means is connectable to the output end of the output passage by using a conduit connected without bends to the output end of the output passage. 13. The liquid separator of claim 1 wherein the input passage and the output passage are concentric tubular passages separated from each other by a tubular and cone shaped wall formed of a gas permeable and liquid impermeable material, the cone shaped wall tapering toward the output ends of the passages along said region. 14. The liquid separator of claim 1 wherein the tapering angle of the output passage is between the values 30 degrees and 0.5 degrees. 15. The liquid separator of claim 14 wherein the tapering angle of the output passage is more than 3 degrees but less than 20 degrees. 16. The liquid separator of claim 1 wherein the liquid separator includes a liquid receiving means, which is connected to the output end of the input passage for receiving the second portion of the gas and the liquid in the liquid receiving means. 17. A liquid separator for removing liquid from a gas to be analyzed in a gas analyzer, said liquid separator comprising: an input passage having an input end to which a gas sample containing liquid is supplied, the input passage forming a gas flow passage in said separator and having an output end; an output passage having a first end and a second, output end; and a wall formed of a gas permeable and liquid impermeable material separating the input passage and the output passage in a region lying between the ends of the passages and along which region the passages lie on opposite sides of said wall, a first portion of the gas passing, in said region, through said wall from the input passage to the output passage for discharge from the output end of the output passage as the gas to be analyzed, a second portion of the gas sample and the liquid remaining in the input passage for discharge from the output end of the input passage; the input passage and output passages having cross sectional areas generally transverse to a flow direction in the passages, the input passage being formed such that the cross sectional area of the input passage taken generally transverse to a flow direction in the input passage decreases in a tapered manner along the flow direction toward the output end of the input passage in at least a portion of the region along the passages in which the passages lie on opposite sides of said wall and adjacent said output end of said input passage, the cross sectional area of the input passage adjacent the input end of the input passage being greater than the cross sectional area of the output passage adjacent its input end by amount that causes the flow of gas along the passages to generate similar gas velocity profiles along the input and output passages. 18. The liquid separator of claim 17 wherein a tapered portion of the input passage extends over at least about half of the input passage length in said region. 19. The liquid separator of claim 17 wherein the tapering angle of the input passage is between the values 30 degrees and 0.5 degrees. 20. The liquid separator of claim 19 wherein the tapering angle of the input passage is more than 3 degrees but less than 20 degrees. 21. The liquid separator of claim 17 wherein the liquid separator includes a liquid receiving means, which is connected to the output end of the input passage for receiving the second portion of the gas and the liquid in the liquid receiving means. 22. A method for separating a small quantity of liquid from a gas stream to provide a large volume of gas from which the liquid has been separated, the gas stream intermittently containing a quantity of gas of interest to be analyzed in a gas analyzer, the separation being carried out in a manner that minimizes alteration of a response time of the gas analyzer, said method comprising the steps of: providing the gas stream containing the small quantity of liquid and the intermittently appearing gas quantity of interest to an input end of an input passage of a separator; and dividing the gas stream into two parts by using the input passage having an input end receiving the gas stream, the input passage having an output end; an output passage of the separator having a first end and a second, output end; and a gas permeable and liquid impermeable wall separating said two passages in a region in which the passages lie on opposite sides of the wall, a major part of the gas stream passing from the input passage through the wall to the output passage for supply to a gas analyzer at the output end of the output passage, a minor part of the gas stream, as well as the liquid, remaining in the input passage for discharge at the output end of the input passage; the passages being so formed that the cross sectional areas of the input and output passages generally transverse to flow directions in the passages are varied such that the profile of the gas velocity along at least a portion of the output passage and the profile of the gas velocity along at least a corresponding portion of the input passage are approximately similar, the similar gas velocity profiles in the passages causing the gas quantity of interest to be analyzed to be presented to the gas analyzer in a form that minimizes alteration of the response time of the gas analyzer to the intermittent gas quantity of interest to be analyzed. 23. The method of claim 22 wherein the profile of the gas velocity along an input end portion of the output passage is approximately similar to the profile of the gas velocity along an input end portion of the input passage. 24. The method of claim 22 wherein the profile of the gas velocity along an output end portion of the input passage is approximately similar to the profile of the gas velocity along an output end portion of the output passage.
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