IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0723047
(2007-03-16)
|
등록번호 |
US-7661604
(2010-04-03)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
11 인용 특허 :
2 |
초록
▼
A system and method are provided for selectively dosing and dispensing a predetermined liquid material in and from a pre-dispensing measuring sight glass container vessel, wherein a housing is disposed to receive a pressurized fluid stream, to provide an intermediate measurement and storage vessel f
A system and method are provided for selectively dosing and dispensing a predetermined liquid material in and from a pre-dispensing measuring sight glass container vessel, wherein a housing is disposed to receive a pressurized fluid stream, to provide an intermediate measurement and storage vessel for the liquid material and to provide a selectively operable valve assembly that is disposed in a flow path defined in the housing. The housing includes an inlet, an outlet, and an intermediate portion extending therebetween, which is formed with an admission port for admitting the predetermined liquid material. The valve assembly is disposed between the housing's inlet and outlet, and may be selectively operated to fill the sight glass container from the source container; or, to dispense the liquid material from the sight glass container; or, to clean the sight glass container; or, to just provide a flow of the pressurized fluid without any liquid material. At no selection or operating condition can liquid material from the source container be dispensed without first being measured into the sight glass container.
대표청구항
▼
What is claimed is: 1. A system for accurate dosing and dispensing of a predetermined liquid material, comprising: a housing for receiving a pressurized fluid stream, the housing having an inlet, an outlet, and an intermediate portion extending therebetween and defining an admission port for admitt
What is claimed is: 1. A system for accurate dosing and dispensing of a predetermined liquid material, comprising: a housing for receiving a pressurized fluid stream, the housing having an inlet, an outlet, and an intermediate portion extending therebetween and defining an admission port for admitting the predetermined liquid material; a measuring container operably coupled to the housing for segregating from a source a preselected portion of the liquid material to be dispensed, the measuring container including a containment vessel having at least a partially transparent sight glass portion; a selectively operable valve assembly disposed in a flow path defined through the housing, the valve assembly including: a flow control valve selectively operable to alternatively permit or stop a flow of the pressurized fluid through the housing, and a function selection valve operable to selectively set one of a plurality of functional configurations for guiding the liquid material; and, a holding container operably coupled to the function selection valve, for storage of the predetermined liquid material, the holding container being selectively disposed in open communication with the measuring container and the flow of pressurized fluid responsive to the function selection valve; wherein the measuring container in a first of the functional configurations is disposed in open communication with the flow of pressurized fluid through the housing, and in a second of the functional configurations is isolated therefrom. 2. The system as recited in claim 1, wherein the function selection valve defines a vacuum inducing passage, the flow of pressurized fluid being established therethrough. 3. The system as recited in claim 2, wherein the function selection valve includes: a fluid housing having the vacuum inducing passage formed therethrough; and, a valve plate displaceably coupled to the fluid housing, the valve plate being formed with a plurality of through openings selectively disposed for open communication with the vacuum inducing passage responsive to valve plate displacement relative to the fluid housing. 4. The system as recited in claim 3, wherein the vacuum inducing passage is formed by a Venturi tube portion, the Venturi tube portion including first and second outer sections respectively converging to an intermediate Venturi throat section. 5. The system as recited in claim 4, wherein the fluid housing includes a transverse cylindrical portion coaxially receiving the Venturi tube portion, a plurality of partitions extending radially between an outer surface of the Venturi tube portion and an inner surface of the transverse cylindrical portion to define a plurality of annular chambers therebetween, the annular chambers being selectively disposed in open communication with the vacuum inducing passage responsive to displacement of the valve plate relative to the fluid housing. 6. The system as recited in claim 5, wherein the Venturi tube portion includes a through port formed in the outer surface at the Venturi throat. 7. The system as recited in claim 1, wherein the functional configurations selectable by the function selection valve include: clean, rinse, fill and dispense configurations, wherein: in the clean configuration, the measuring container being in open communication with the flow of pressurized fluid for aspirated admission of a portion of the pressurized fluid therein, the holding container remaining isolated from the flow of pressurized fluid; in the rinse configuration, both the holding container and the measuring container being isolated from the flow of pressurized fluid; in the fill configuration, the measuring container being in open communication with both the holding container and the flow of pressurized fluid for inducing aspirated flow of the liquid material from the holding container to the measuring container; and, in the dispense configuration, the measuring container being in open communication with the flow of pressurized fluid for inducing aspirated expulsion of the liquid material therefrom into the flow of pressurized fluid, the holding container remaining isolated from the flow of pressurized fluid. 8. A method for selectively and accurately dosing and dispensing a predetermined liquid material, the method comprising the steps of: establishing a first source for the predetermined liquid material and a second source for a pressurized fluid stream; attaching to the first and second sources a housing for receiving the pressurized fluid stream, the housing having an admission port and flow path for selectively admitting and guiding the predetermined liquid material therethrough; establishing a containment vessel having at least a partially transparent sight glass portion; segregating from the first source and holding in the containment vessel a preselected portion of the liquid material to be dispensed responsive to selective control of at least one of the pressurized fluid stream passage through the housing and selective configuration of a function selection valve assembly disposed in the flow path of the housing for selecting at least one of a plurality of operational configurations, wherein the containment vessel in a first of the operational configurations is disposed in open communication with the flow of pressurized fluid through the housing, and in a second of the operational configurations is isolated therefrom; storing the predetermined liquid material in a holding container operably coupled to the function selection valve assembly, the function selection valve assembly being selectively adjusted to selectively set the holding container in open communication with the containment vessel and the flow of pressurized fluid; and, mixing the segregated portion of liquid material with the fluid stream to form a mixture for release onto a predetermined area of a surface to be treated. 9. The method as recited in claim 8, wherein the flow of pressurized fluid is established through a vacuum inducing passage defined by the function selection valve assembly. 10. The method as recited in claim 9, wherein the function selection valve assembly is established to include: a fluid housing having the vacuum inducing passage formed therethrough; and, a valve plate displaceably coupled to the fluid housing, the valve plate being formed with a plurality of through openings; whereby the valve plate is selectively displaced relative to the fluid housing for positioning selected ones of the through openings for open communication with the vacuum inducing passage, a vacuum induced flow being thereby generated through the selected ones of the through openings. 11. The method as recited in claim 10, wherein the flow of pressurized fluid through the vacuum inducing passage generates a sub-atmospheric pressure condition by a Venturi tube effect, the sub-atmospheric pressure condition being generated at a Venturi throat section defined intermediately between converging outer sections. 12. The method as recited in claim 11, wherein the vacuum inducing passage is formed by coaxial insert of a Venturi tube portion within a transverse cylindrical portion defined by the fluid housing, a plurality of annular chambers being defined between an outer surface of the Venturi tube portion and an inner surface of the transverse cylindrical portion by establishing partitions to extend radially therebetween, the annular chambers being selectively disposed in open communication with the vacuum inducing passage responsive to displacement of the valve plate relative to the fluid housing. 13. The method as recited in claim 12, wherein a through port is established in the outer surface of the Venturi tube portion for access to the Venturi throat section. 14. The method as recited in claim 13, wherein the operational configurations selectable by corresponding adjustment of the function selection valve assembly include: clean, rinse, fill and dispense configurations, wherein: in the clean configuration, the containment vessel is disposed in open communication with the flow of pressurized fluid for aspirated admission of a portion of the pressurized fluid therein, the holding container remaining isolated from the flow of pressurized fluid; in the rinse configuration, both the holding container and the containment vessel are isolated from the flow of pressurized fluid; in the fill configuration, the containment vessel is disposed in open communication with both the holding container and the flow of pressurized fluid, whereby aspirated flow of the liquid material from the holding container to the containment vessel is induced; and in the dispense configuration, the containment vessel is disposed in open communication with the flow of pressurized fluid, whereby aspirated expulsion of the liquid material from the containment vessel into the flow of pressurized fluid is induced, the holding container remaining isolated from the flow of pressurized fluid. 15. The method as recited in claim 8, wherein the sight glass portion of the containment vessel includes indicia for visually correlating the segregated portion of the liquid material to the predetermined area of the surface to be treated therewith, whereby sufficient treatment of the predetermined area with proper dosage of the liquid material may be visually confirmed by the user. 16. A system for accurate dosing and dispensing of a predetermined liquid material, comprising: a housing for receiving a pressurized fluid stream, the housing having an inlet, an outlet, and an intermediate portion extending therebetween and defining an admission port for admitting the predetermined liquid material; a measuring container operably coupled to the housing for segregating from a source a preselected portion of the liquid material to be dispensed, the measuring container including a containment vessel having at least a partially transparent sight glass portion; and, a selectively operable valve assembly disposed in a flow path defined through the housing, the valve assembly including: a flow control valve selectively operable to alternatively permit or stop a flow of the pressurized fluid through the housing, and a function selection valve operable to selectively set one of a plurality of functional configurations for guiding the liquid material; wherein the measuring container in a first of the functional configurations is disposed in open communication with the flow of pressurized fluid through the housing, and in a second of the functional configurations is isolated therefrom; wherein the flow control valve comprises a rotatable drum element displaceably coupled to the housing, the rotatable drum element including a peripheral surface defining against an inner wall surface of the housing a path for the pressurized fluid to the housing inlet, the peripheral surface having a plurality of grooves each formed with a predetermined cross-sectional area, whereby a flow rate for the pressurized fluid is selectively set. 17. The system as recited in claim 16, wherein the rotatable drum element includes a resilient face seal member offset from the grooves, the face seal member sealing the inlet when aligned therewith. 18. The system as recited in claim 17, wherein the grooves are disposed within a pair of laterally offset o-ring seals captured between the rotatable drum element and the inner wall surface of the housing.
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