Gas/liquid separator including a liquid trap filter
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
A62B-007/10
출원번호
US-0678364
(2003-10-03)
§371/§102 date
20040514
(20040514)
발명자
/ 주소
Larsen, Michael T.
Soroka, Leonid B.
출원인 / 주소
Criticare Systems, Inc.
대리인 / 주소
Reinhard Boerner Van Deuren S.C.
인용정보
피인용 횟수 :
7인용 특허 :
16
초록▼
A liquid separator for a respiratory gas sample analyzer includes a closed container having a liquid trap filter chamber integral with the container. The liquid trap filter chamber includes an inlet compartment and an outlet compartment. The inlet compartment is interposed between a sample inlet por
A liquid separator for a respiratory gas sample analyzer includes a closed container having a liquid trap filter chamber integral with the container. The liquid trap filter chamber includes an inlet compartment and an outlet compartment. The inlet compartment is interposed between a sample inlet port and a sample outlet port and includes a gas permeable, liquid impermeable filter element for separating liquid from a gas sample, the liquid separated from the gas sample passing to a collection chamber. The outlet compartment includes a further gas permeable, liquid impermeable trap filter element which is interposed between the collection chamber and a low pressure port, for preventing the flow of liquid through the output compartment to the low pressure port.
대표청구항▼
1. A liquid separator for a gas analyzer, said liquid separator comprising:a closed container including a sample inlet port, a sample outlet port, and a low pressure port; said container defining a liquid collection chamber and a liquid trap filter chamber, said liquid trap filter chamber including
1. A liquid separator for a gas analyzer, said liquid separator comprising:a closed container including a sample inlet port, a sample outlet port, and a low pressure port; said container defining a liquid collection chamber and a liquid trap filter chamber, said liquid trap filter chamber including an inlet compartment interposed between said sample inlet port and said sample outlet port for receiving a gas sample introduced into said sample inlet port, said inlet compartment having an upper outlet communicated with said sample outlet port and a lower outlet communicated with said liquid collection chamber; a first liquid trap filter element, said first filter element being a thin, generally flat member contained and supported within said inlet compartment, interposed between said sample inlet port and said sample outlet port for separating liquid from the gas sample, liquid separated from the gas sample passing through said lower outlet to said collection chamber, said first filter element oriented vertically within said inlet compartment to maximize active surface area of said first filter element; said liquid trap filter chamber further including an outlet compartment interposed between said collection chamber and said low pressure port, said outlet compartment having an inlet communicated with said collection chamber and an outlet communicated with said low pressure port; and a second liquid trap filter element, said second filter element being a thin, generally flat member that is separate from said first filter element, said second filter element contained and supported within said outlet compartment interposed between said inlet and said outlet of said outlet compartment, said second filter element oriented vertically within said outlet compartment to maximize active surface area of said second filter element. 2. The liquid separator according to claim 1, wherein said inlet compartment includes a back wall interposed between said first filter element and said sample outlet port, said back wall of said inlet compartment defining said upper outlet, said first filter element overlying said back wall of said inlet compartment.3. The liquid separator according to claim 2, wherein said liquid trap filter chamber includes a cover which encloses said first filter element within said inlet compartment.4. The liquid separator according to claim 3, wherein said cover includes at least one concave filter engaging surface engaging said first filter element to trap said first filter element between said cover and said back wall of said inlet compartment.5. The liquid separator according to claim 1, wherein said first filter element comprises a membrane bearing a polytetrafluoroethylene laminate.6. The liquid separator according to claim 1, wherein said outlet compartment includes a back wall interposed between said second filter element and said low pressure port, said back wall of said outlet compartment defining said outlet of said outlet compartment, said second filter element overlying said back wall of said outlet compartment.7. The liquid separator according to claim 1, wherein said second filter element comprises a membrane bearing a polytetrafluoroethylene laminate.8. The liquid separator according to claim 1, and including a self-sealing filter in at least one of said sample outlet port and said low pressure port.9. A liquid separator for a gas analyzer, said liquid separator comprising:a sample inlet port; a sample outlet port; an inlet compartment having an upper outlet communicated with said sample outlet port and a lower outlet communicated with a collection chamber, said inlet compartment having an inlet front wall and an inlet back wall extending generally parallel to said inlet front wall, said inlet back wall defining said upper outlet; a first gas permeable, liquid impermeable filter element, said first filter element being a thin, generally flat member contained and supported within said inlet compartment interposed between and extending parallel to said inlet front wall and said inlet back wall and interposed between said sample inlet port and said upper outlet for separating liquid from the gas sample; a support web on said inlet back wall spacing said first filter element forwardly of said inlet back wall; a liquid collection chamber for receiving liquid passed through said lower outlet of said inlet compartment; an outlet compartment interposed between said collection chamber and a low pressure outlet, said outlet compartment having an inlet communicated with said collection chamber and an outlet communicated with said low pressure port, said outlet compartment having an outlet front wall and an outlet back wall extending generally parallel to said outlet front wall, said outlet back wall defining said upper outlet; and a second gas permeable, liquid impermeable filter element said second filter element being a thin, generally flat member contained and supported within said outlet compartment interposed between and extending parallel to said outlet front wall and said outlet back wall and interposed between said inlet and said outlet of said outlet compartment; and a support web on said outlet back wall spacing said second filter element forwardly of said outlet back wall. 10. The liquid separator according to claim 9, including a self-sealing filter in at least one of said sample outlet port and said low pressure port.11. The liquid separator according to claim 9, wherein said first-mentioned and said second filter elements each comprises a membrane bearing a polytetrafluoroethylene laminate.12. A liquid separator for a gas analyzer, said liquid separator comprising:a sample inlet port; a sample outlet port; a liquid collection chamber; an inlet compartment for receiving a gas sample introduced into said sample inlet port, said inlet compartment having an upper outlet communicated with said sample outlet port and a lower outlet communicated with said collection chamber, said inlet compartment having an inlet back wall defining said upper outlet; a first gas permeable, liquid impermeable filter element contained within said inlet compartment, said first filter element being a generally flat member overlying said inlet back wall and interposed between said sample inlet port and said upper outlet for separating liquid from the gas sample; a support web on said inlet back wall supporting said first filter element within said inlet compartment spaced forwardly of said inlet back wall; liquid separated from said gas sample being passed through said lower outlet of said inlet trap filter compartment to said collection chamber; a low pressure port; an outlet compartment interposed between said collection chamber and said low pressure port, said outlet compartment having an inlet communicated with said collection chamber and an outlet communicated with said low pressure port, said outlet compartment having an outlet back wall defining said outlet of said outlet compartment; and a second gas permeable, liquid impermeable filter element contained within said outlet compartment, said first filter element being a generally flat member overlying said outlet back wall and interposed between said inlet and said outlet of said outlet compartment; and a support web on said outlet back wall supporting said second filter element within said outlet compartment spaced forwardly of said outlet back wall. 13. A liquid separator for a gas analyzer, said liquid separator comprising:a sample inlet port; a sample outlet port; an inlet compartment for receiving a gas sample introduced into said sample inlet port, said inlet compartment having an upper outlet communicated with said sample outlet port and a lower outlet, said inlet compartment having an inlet back wall defining said upper outlet; a first gas permeable, liquid impermeable filter element contained within said inlet compartment, said first filter element being a flat member generally circular in shape and overlying said inlet back wall, interposed between said sample inlet port and said upper outlet for separating liquid from the gas sample; a support web on said inlet back wall supporting said first filter element within said inlet compartment spaced forwardly of said inlet back wall, providing an active area through which gas can flow to said upper outlet; a liquid collection chamber receiving liquid passed through said lower outlet of said inlet trap filter compartment; a low pressure port; an outlet compartment interposed between said collection chamber and said low pressure port, said outlet compartment having an inlet communicated with said collection chamber and a low pressure outlet communicated with said low pressure port, said outlet compartment having an outlet back wall defining said low pressure outlet; and a second gas permeable, liquid impermeable filter element contained within said outlet compartment, said second filter element being a flat member generally circular in shape and overlying said outlet back wall, interposed between said inlet and said low pressure outlet of said outlet compartment; and a support web on said outlet back wall supporting said second filter element within said outlet compartment spaced forwardly of said outlet back wall, providing an active area through which gas can flow to said low pressure outlet. 14. A liquid separator for a gas analyzer, said liquid separator comprising:a sample inlet port; a sample outlet port; a liquid trap filter chamber including an inlet compartment interposed between said sample inlet port and said sample outlet port for receiving a gas sample introduced into said sample inlet port, said inlet compartment having an upper outlet communicated with said sample outlet port and a lower outlet; a first gas permeable, liquid impermeable filter element contained within said inlet compartment interposed between said sample inlet port and said upper outlet for separating liquid from the gas sample; a liquid collection chamber receiving liquid passed through said lower outlet of said inlet trap filter compartment; a low pressure port; an outlet compartment interposed between said collection chamber and said low pressure port, said outlet compartment having an inlet communicated with said collection chamber and an outlet communicated with said low pressure port; a second gas permeable, liquid impermeable filter element contained within said outlet compartment interposed between said inlet and said outlet of said outlet compartment; and a baffle located within said collection chamber, said baffle extending downwardly from a lower surface of said liquid trap filter chamber, located between said lower outlet of said inlet compartment and said inlet of said outlet compartment, providing a barrier between said lower outlet of said inlet compartment and said inlet of said outlet compartment along said lower surface of said liquid collection chamber.
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