IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0235725
(1994-04-29)
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발명자
/ 주소 |
- Morgan Vernon E.
- Reedy Carl D.
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출원인 / 주소 |
- Texas Instruments Incorporated
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
0 |
초록
▼
A fluid delivery system (10, 210) is disclosed that includes a pipeline network (20, 220) having a chemical supply line (12, 14, 212), a filtering system (134, 235), a feeding portion (24, 224), and a return portion (26, 226). A first tank (28, 228), a second tank (30, 230), and a third tank (32, 23
A fluid delivery system (10, 210) is disclosed that includes a pipeline network (20, 220) having a chemical supply line (12, 14, 212), a filtering system (134, 235), a feeding portion (24, 224), and a return portion (26, 226). A first tank (28, 228), a second tank (30, 230), and a third tank (32, 232) are coupled to the feeding portion (24, 224) and the return portion (26, 226) of the pipe network (20, 220). A control module (100) is coupled to a multiplicity of valves (46, 52, 48, 54, 50, 56, 70, 86, 72, 88, 74, 90) for controlling the flow of the fluid through the system in a manner that provides a continuous and bumpless flow of the fluid. Additionally, the system (10, 210) may include a plurality of sensors (94, 96, 98) that allow control module 100 to sense the volume of fluid in the system (10, 210) and each tank (28, 30, 32, 228, 230, 232). Fluid flow through the pipe network (20, 220) is promoted by a pressure differential between a pressure source (58, 264, 266, 268) and a vent line or second pressure source (78, 278). A method of circulating the fluid with system (10, 210) is also provided.
대표청구항
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[ What is claimed is:] [9.] A method supplying a fluid having a selected chemical concentration comprising the steps of:providing a first tank for holding at least a portion of the fluid;providing a second tank for holding at least a portion of the fluid;providing a third tank for holding at least a
[ What is claimed is:] [9.] A method supplying a fluid having a selected chemical concentration comprising the steps of:providing a first tank for holding at least a portion of the fluid;providing a second tank for holding at least a portion of the fluid;providing a third tank for holding at least a portion of the fluid;providing a pipeline network fluidly coupled to the first tank, the second tank, and the third tank, and having a feeding portion and a return portion;coupling a chemical supply line to the pipeline network for supplying the chemical upon demand to an end user;coupling a first plurality of valves to the first, second, and third tanks to selectively control the flow of the chemical from the tanks into the feeding portion of the pipeline network;coupling a second plurality of valves to the first, second, and third tanks to selectively control the flow of the chemical from the return portion of the pipeline network into the first, second, and third tanks;coupling a control module to the first and second plurality of valves for selectively controlling the opening and closing of each valve;coupling a plurality of sensors to the first, second, and third tanks and coupled to the control module for allowing the control module to sense the amount of chemical in each tank;coupling a pressure source to the first tank, second tank, and third tank;coupling a third plurality of valves to the first, second, and third tanks, and coupled to the pressure source, each valve of the third plurality of valves also coupled to the control module for selectively allowing the tank coupled to the valve to be exposed to the pressure source;coupling a fourth plurality of valves to the first, second, and third tanks, each of the valves of the fourth plurality of valves coupled to the control module for selectively allowing the tank coupled thereto to be exposed to a pressure less than the pressure source; andcirculating the chemical to supply the chemical to the chemical supply line at all times by opening and closing the first, second, third, and fourth plurality of valves to provide a continuous, bumpless flow of chemical through the pipeline network.
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