IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0246865
(2005-10-07)
|
등록번호 |
US-7717001
(2010-06-10)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
105 |
초록
▼
A device for sampling of a mixture of ultrafine particles within a moving gas stream includes a suction generator, at least one sample collection element, and a conduit structure coupling the sample collection element with the suction generator. In some embodiments, the suction generator is configur
A device for sampling of a mixture of ultrafine particles within a moving gas stream includes a suction generator, at least one sample collection element, and a conduit structure coupling the sample collection element with the suction generator. In some embodiments, the suction generator is configurable to separate by suction a portion of a gas stream containing a plurality of ultrafine particles, and to entrain with a motive fluid forming an output mixture. In some embodiments, a conduit is configured to accept a gas stream containing ultrafine particles and to channel it to the collection element.
대표청구항
▼
What is claimed is: 1. A device for sampling and collecting particles from a gas stream, comprising: a. means for channeling a motive fluid and for separating a selected particle-containing portion of a gas stream and entraining the particle-containing portion into a motive fluid-particle mixture;
What is claimed is: 1. A device for sampling and collecting particles from a gas stream, comprising: a. means for channeling a motive fluid and for separating a selected particle-containing portion of a gas stream and entraining the particle-containing portion into a motive fluid-particle mixture; b. a conduit to distribute the motive fluid-particle mixture into a selected collection element; c. means for cleaning to remove residue from within the means for channeling and the conduit, wherein the means for channeling and the means for cleaning comprise a Venturi-type eductor having a motive fluid inlet, a suction inlet, and an outlet; and d. a sweep fluid reservoir coupled to the suction inlet to deliver sweep fluid through the suction inlet to the outlet and a motive fluid reservoir coupled to the motive fluid inlet to deliver motive fluid through the motive fluid inlet to the outlet, forming suction within the suction inlet. 2. The device of claim 1, wherein the collection element comprises one or more of the following: a filter, a vessel. 3. A device for sampling of a mixture of ultrafine particles within a moving gas stream, comprising: a. a suction generator, configurable to separate by suction and to entrain with a motive fluid, forming an output mixture, a portion of a gas stream containing a plurality of ultrafine particles, wherein the suction generator is a Venturi-type eductor having a motive fluid inlet, a suction inlet, and an outlet; b. a conduit structure coupled with the suction generator to channel the output mixture; c. at least one sample collection element configurable to accept a selected portion of the output mixture, and coupled with the suction generator via the conduit structure; d. a sweep fluid reservoir coupled to the suction inlet; and e. a motive fluid reservoir coupled to the motive fluid inlet, wherein the sweep fluid reservoir is configured to deliver sweep fluid through the suction inlet to the outlet and the motive fluid reservoir is configured to deliver motive fluid through the motive fluid inlet to the outlet, forming suction within the suction inlet. 4. The device of claim 3, wherein the sample collection element comprises one or more of the following: a filter, a vessel. 5. An apparatus for separating a portion of a moving mixture of ultrafine particles within a gas stream, comprising: a. a suction generator configured to entrain a particle-containing portion of a moving mixture within a motive fluid to form an output mixture, wherein the suction generator comprises a Venturi-type eductor having a motive fluid inlet, a suction inlet, and the outlet; b. a sweep fluid reservoir coupled with the suction inlet and configured to deliver a sweep fluid therethrough; c. a motive fluid reservoir coupled with the motive fluid inlet; and d. one or more collection elements removably coupled with the outlet to receive selected portions of the output mixture, wherein the suction generator is configured to allow removal by the sweep fluid and by the output mixture, of a residue from therewithin, further wherein the sweep fluid reservoir is configured to deliver the sweep fluid through the suction inlet to the outlet and the motive fluid reservoir is configured to deliver the motive fluid through the motive fluid inlet to the outlet, forming suction within the suction inlet. 6. The apparatus of claim 5, wherein the motive fluid reservoir and the sweep fluid reservoir are configured to irreversibly deliver their respective fluids. 7. The apparatus of claim 5, wherein the residue is a residue deposited from a prior output mixture during a prior use. 8. The apparatus of claim 5, wherein one or more of the collection elements comprises one or more of the following: a filter, a vessel. 9. An apparatus for separating a portion of a moving mixture of ultrafine particles within a gas stream, comprising: a. a Venturi-type eductor valve having a motive fluid inlet, a suction inlet, and an outlet configured to form a negative pressure stream biased from the suction inlet to the outlet and capable of entraining a portion of the moving mixture of ultrafine particles within a gas stream when a motive fluid is flowed from the motive fluid inlet to the outlet, wherein the suction inlet is configurable to communicate with the moving mixture of ultrafine particles within a gas stream; b. a motive fluid reservoir configured to irreversibly deliver motive fluid through the motive fluid inlet; c. a sweep fluid reservoir configured to irreversibly deliver sweep fluid through the suction inlet to the outlet; d. a conduit structure coupled with the outlet and configured to allow the removal of a residue therefrom by the output mixture and by the sweep fluid; and e. one or more collection elements sealably coupled with the conduit structure to accept delivery of at least a portion of the output mixture, wherein at least one of the collection elements is a bulk collection chamber coupled with the conduit structure via a one way valve biased to allow flow only from the conduit structure into the bulk collection chamber. 10. A method of sampling powder from a gas stream containing ultrafine particles, comprising: a. separating a portion of gas containing a target powder from the gas stream by suction to form a mixture of a motive fluid with the target powder entrained therein; b. directing a first portion of the mixture through a conduit structure for a period of time sufficient to substantially clean the conduit structure; c. directing a second portion of the mixture through the conduit structure into a collection element after the period of time; and d. flowing a sweep fluid through the conduit structure to maintain substantial entrainment of the target powder, wherein the suction is provided by a negative pressure stream formed by flowing the motive fluid through a Venturi-type eductor having a motive fluid inlet, a suction inlet, and an outlet; further wherein a sweep fluid is delivered through the suction inlet to the outlet. 11. The method of claim 10, further comprising repeating the steps of ‘flowing’ through the step of ‘directing a second portion’. 12. The method of claim 10, wherein the collection element comprises one or more of the following: a filter, a vessel. 13. A process for achieving high purity sampling of at least two mixtures from a single source, comprising: a. flowing a motive fluid through a Venturi-type eductor valve to form a negative pressure stream; b. applying the negative pressure stream to a first gas stream to separate a portion thereof and entrain it into a first target mixture, the gas stream containing a first target powder and originating from a source; c. directing the first target mixture through a conduit network into a first collection element; d. flowing a sweep gas through the Venturi-type eductor valve, without forming a negative pressure stream, and through the conduit network to remove at least a portion of remaining first target mixture therefrom; e. flowing a motive fluid through a Venturi-type eductor valve to form a negative pressure stream; f. applying the negative pressure stream to a second gas stream to separate a portion thereof and entrain it into a second target mixture, the gas stream containing a second target powder and originating from the source; g. flowing a portion of the second target mixture through the conduit network for a time sufficient to substantially clean the conduit network of the remaining first target mixture; and h. directing a further portion of the second target mixture through the conduit network into a second collection element, wherein the steps of ‘flowing a motive fluid’ and of ‘flowing a sweep gas’ are coordinated to maintain substantial entrainment of the first and the second target powders throughout the conduit network for the duration of the process. 14. The process of claim 13, wherein the first collection element and the second collection element comprises one or more of the following: a filter, a vessel.
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