Fluid storage and dispensing system including dynamic fluid monitoring of fluid storage and dispensing vessel
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B82Y-010/00
G01M-003/32
F17C-011/00
G01F-022/02
출원번호
US-0155237
(2011-06-07)
등록번호
US-9097611
(2015-08-04)
발명자
/ 주소
McManus, James V.
Dietz, James
Lurcott, Steven M.
출원인 / 주소
ENTEGRIS, INC.
대리인 / 주소
Hultquist, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
65
초록▼
A monitoring system for monitoring fluid in a fluid supply vessel during operation including dispensing of fluid from the fluid supply vessel. The monitoring system includes (i) one or more sensors for monitoring a characteristic of the fluid supply vessel or the fluid dispensed therefrom, (ii) a da
A monitoring system for monitoring fluid in a fluid supply vessel during operation including dispensing of fluid from the fluid supply vessel. The monitoring system includes (i) one or more sensors for monitoring a characteristic of the fluid supply vessel or the fluid dispensed therefrom, (ii) a data acquisition module operatively coupled to the one or more sensors to receive monitoring data therefrom and responsively generate an output correlative to the characteristic monitored by the one or more sensors, and (iii) a processor and display operatively coupled with the data acquisition module and arranged to process the output from the data acquisition module and responsively output a graphical representation of fluid in the fluid supply vessel.
대표청구항▼
1. A monitoring system for dynamically monitoring the volume of fluid in an adsorbent-based gas supply vessel in a gas box of an ion implanter during operation including dispensing of gas from the gas supply vessel, said monitoring system including (i) a monitoring assembly in the gas box, adapted t
1. A monitoring system for dynamically monitoring the volume of fluid in an adsorbent-based gas supply vessel in a gas box of an ion implanter during operation including dispensing of gas from the gas supply vessel, said monitoring system including (i) a monitoring assembly in the gas box, adapted to monitor at least one characteristic of the gas supply vessel selected from the group consisting of: vessel wall strain; vessel temperature; vessel displacement; vessel flexial character; and vessel weight or at least one characteristic of the gas dispensed from the gas supply vessel selected from group consisting of: gas pressure; gas temperature; cumulative flow volume; and gas flow rate, and transmit an output correlative to the at least one monitored characteristic, and (ii) an output assembly external to the ion implanter, with said monitoring assembly being arranged in signal transmission relationship to the output assembly by a signal transmission arrangement including a signal transmission optical cable extending exteriorly of the ion implanter to the output assembly, wherein the output assembly comprises a processor and a display, and is programmably arranged to provide an output on said display depicting a real-time graphical representation of volume of gas remaining in the gas supply vessel, with the processor being configured to determine, based on isotherm equations, the volume of gas remaining in the gas supply vessel from the output transmitted by the monitoring assembly. 2. The monitoring system of claim 1, wherein the monitoring assembly is adapted to monitor at least one characteristic of the fluid supply vessel. 3. The monitoring system of claim 2, wherein the monitoring assembly is adapted to monitor at least one characteristic of the fluid supply vessel, wherein said at least one characteristic is selected from the group consisting of: vessel wall strain; vessel displacement; vessel flexial character; and vessel weight. 4. The monitoring system of claim 1, wherein the monitoring assembly is adapted to monitor at least one characteristic of the gas dispensed from the gas supply vessel. 5. The monitoring system of claim 4, wherein the monitoring assembly is adapted to monitor at least one characteristic of the gas dispensed from the gas supply vessel, wherein said at least one characteristic is selected from group consisting of: gas pressure, cumulative flow volume; and gas flow rate. 6. The monitoring system of claim 1, wherein the monitoring assembly comprises at least one sensor selected from the group consisting of: pressure transducers, manometric pressure sensors, thermocouples, mass flow controllers, and flow totalizers. 7. A monitoring system for dynamically monitoring the volumetric content of fluid in a fluid supply vessel in a gas box of an ion implanter during operation including dispensing of fluid from the fluid supply vessel, said monitoring system including (i) a monitoring assembly in the gas box, adapted to monitor at least one characteristic of the fluid supply vessel or the fluid dispensed therefrom, and transmit an output correlative to the at least one monitored characteristic, and(ii) an output assembly external to the ion implanter, with said monitoring assembly being arranged in signal transmission relationship to the output assembly by a signal transmission arrangement including a signal transmission optical cable extending exteriorly of the ion implanter to the output assembly,wherein the output assembly comprises a processor and a display, and is programmably arranged to provide an output on said display depicting a representation of the fluid supply vessel with a volumetric content of fluid in the vessel, wherein said volumetric content of fluid is determined by said processor based on the output transmitted by the monitoring assembly, to provide real-time graphical representation of said volumetric content of fluid in the fluid supply vessel,wherein the fluid supply vessel contains a sorbent for storing the fluid and from which the fluid is selectively desorbed for dispensing, and the monitoring system is adapted to perform the following sequence of operations: sensing gas box temperature T;measuring the fluid supply vessel pressure P;setting an end-point pressure for dispensing fluid from said fluid supply vessel;determining temperature coefficients dP/dT at various pressures;determining temperature coefficient for said end-point pressure;normalizing measured pressure to a predetermined temperature;normalizing said end-point pressure to said predetermined temperature;determining isotherm equations at said predetermined temperature for said sorbent and fluid; determining, using said isotherm equations, the amount of fluid remaining in the fluid supply vessel; andoutputting the amount of fluid remaining in the fluid supply vessel to the display. 8. An ion implanter including a gas box containing at least one gas supply vessel, and a monitoring system as claimed in claim 7, arranged for monitoring fluid in said at least one gas supply vessel in said gas box of the ion implanter during operation including dispensing of fluid therefrom. 9. The ion implanter of claim 8, wherein each of said at least one gas supply vessel contains fluid selected from the group consisting of arsine, phosphine, boron trifluoride, germanium tetrafluoride and silicon tetrafluoride. 10. The ion implanter of claim 8, wherein each of the at least one gas supply vessel is adapted to dispense said fluid at subatmospheric pressure. 11. The ion implanter of claim 8, wherein each of the at least one gas supply vessel contains a sorbent for storing the fluid and from which gas is selectively desorbed for dispensing from the vessel. 12. The ion implanter of claim 11, wherein said sorbent comprises carbon adsorbent. 13. The ion implanter of claim 8, wherein each of the at least one gas supply vessel contains a pressure regulator interiorly disposed therein. 14. A remote monitoring system for gas inventory in a gas box of an ion implanter, comprising a monitoring assembly in the gas box, and an output assembly external to the implanter, linked to the monitoring assembly by an optical cable, in which the gas box contains an adsorbent-based gas supply vessel, and the monitoring system is arranged with the monitoring assembly adapted to monitor gas box temperature and pressure of gas available from the gas supply vessel, and to transmit corresponding monitoring data through the optical cable to the output assembly, and with the output assembly configured to determine from the transmitted monitoring data, using isotherm equations for the adsorbent and gas in the vessel, the gas inventory remaining in the adsorbent-based gas supply vessel, and to display a graphical depiction of the gas inventory remaining in the adsorbent-based gas supply vessel. 15. The monitoring system of claim 3, wherein the at least one characteristic of the gas supply vessel is the vessel wall strain and the fluid is contained at high pressure in the vessel. 16. The monitoring system of claim 15, wherein the fluid is confined against a pressure regulator set to a predetermined set point pressure for dispensing of fluid from the vessel. 17. The monitoring system of claim 1, further comprising a monitor adapted for monitoring a pressure-reducing device.
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