Combustion system and method for electrically assisted start-up
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23C-099/00
F23Q-007/22
F23Q-003/00
F23N-005/20
F23N-005/24
출원번호
US-0787144
(2014-05-12)
등록번호
US-10125979
(2018-11-13)
국제출원번호
PCT/US2014/037743
(2014-05-12)
국제공개번호
WO2014/183135
(2014-11-13)
발명자
/ 주소
Colannino, Joseph
Karkow, Douglas W.
출원인 / 주소
CLEARSIGN COMBUSTION CORPORATION
대리인 / 주소
Wiklof, Christopher A.
인용정보
피인용 횟수 :
0인용 특허 :
48
초록
A combustion system includes a combustion fluid charge source and a start-up flame holder configured to attract the charge and hold a flame when the combustion system is cool and allow the flame to lift when the combustion system is warmed up.
대표청구항▼
1. A combustion system, comprising: a charge source configured to apply an electric charge to a combustion fluid;a start-up combustion holder configured to attract the electric charge and hold a flame when the combustion system is below a pre-determined temperature threshold and to not hold the flam
1. A combustion system, comprising: a charge source configured to apply an electric charge to a combustion fluid;a start-up combustion holder configured to attract the electric charge and hold a flame when the combustion system is below a pre-determined temperature threshold and to not hold the flame when the combustion system is above the pre-determined temperature threshold; anda raised flame holder spaced apart from the start-up combustion holder and configured to hold the combustion reaction when the combustion system is above the pre-determined temperature threshold, wherein the raised flame holder includes a body defining a plurality of perforations extending through the body. 2. The combustion system of claim 1, wherein the raised flame holder includes a high temperature ceramic honeycomb. 3. The combustion system of claim 1, wherein the raised flame holder includes a cordierite honeycomb. 4. The combustion system of claim 1, wherein the raised flame holder includes an alumina honeycomb. 5. The combustion system of claim 1, wherein the raised flame holder includes a ceramic honeycomb having channels of about 1.99 mm to 5 mm square sectional size. 6. The combustion system of claim 1, wherein the raised flame holder further comprises: a honeycomb sheet having a thickness of about 0.5 inches to 4 inches. 7. The combustion system of claim 6, wherein the raised flame holder further comprises: a honeycomb sheet having a thickness of about 2 inches. 8. The combustion system of claim 1, wherein the combustion fluid includes a fuel stream. 9. The combustion system of claim 1, wherein the combustion fluid includes the flame. 10. The combustion system of claim 1, wherein the combustion fluid includes combustion air. 11. The combustion system of claim 1, wherein the combustion fluid includes flue gas. 12. The combustion system of claim 1, further comprising: a holding voltage source operatively coupled to the start-up combustion holder and configured to substantially maintain the start-up combustion holder at a charge attracting voltage potential. 13. The combustion system of claim 12, wherein the holding voltage source includes an electrical node corresponding to a voltage ground. 14. The combustion system of claim 12, wherein the holding voltage source includes a voltage source configured to output a voltage opposite in polarity from the electric charge with which the combustion fluid is imbued. 15. The combustion system of claim 12, wherein the holding voltage source is configured to hold the start-up combustion holder at a voltage potential sufficient to hold the flame when the combustion system is below the pre-determined temperature threshold. 16. The combustion system of claim 12, further comprising: an electronic controller operatively coupled to the holding voltage source and configured to control the holding voltage applied to the start-up combustion holder. 17. The combustion system of claim 16, further comprising: a sensor operatively coupled to the electronic controller and configured to sense a combustion volume attribute. 18. The combustion system of claim 17, wherein the electronic controller is configured to control the voltage output by the charge voltage source to the charge source responsive to feedback from the sensor. 19. The combustion system of claim 17, wherein the sensor includes a temperature sensor. 20. The combustion system of claim 1, further comprising: a fuel nozzle configured to output a fuel stream. 21. The combustion system of claim 20, further comprising: a fuel valve operatively coupled to the fuel nozzle and configured to control a flow of fuel. 22. The combustion system of claim 20, wherein the fuel valve is configured to allow a fuel stream velocity from the fuel nozzle insufficient to blow the flame off the start-up combustion holder when the combustion system is below the pre-determined temperature threshold. 23. The combustion system of claim 20, wherein the fuel valve is configured to allow a fuel stream velocity from the fuel nozzle sufficient to blow the flame off the start-up combustion holder when the combustion system is above the pre-determined temperature threshold. 24. The combustion system of claim 20, further comprising: an electronic controller operatively coupled to the fuel valve and configured to control a fuel flow rate output by the fuel nozzle. 25. The combustion system of claim 24, further comprising: a sensor operatively coupled to the electronic controller and configured to sense a combustion volume attribute. 26. The combustion system of claim 25, wherein the electronic controller is configured to control the fuel flow rate output by the fuel nozzle responsive to feedback from the sensor. 27. The combustion system of claim 25, wherein the sensor includes a temperature sensor. 28. The combustion system of claim 1, wherein the charge source is configured to apply a charge density to the combustion fluid sufficient to cause the flame to be held by the start-up combustion holder when the combustion system is below the pre-determined temperature threshold. 29. The combustion system of claim 1, wherein the charge source is configured to apply a charge density to the combustion fluid insufficient to cause the flame to be held by the start-up combustion holder when the combustion system is above the pre-determined temperature threshold. 30. The combustion system of claim 1, further comprising: a cooler operatively coupled to the start-up combustion holder. 31. The combustion system of claim 30, wherein the cooler is configured to apply cooling to the start-up holder sufficient to cause the start-up holder to hold the flame when the combustion system is below the pre-determined temperature threshold. 32. The combustion system of claim 30, wherein the cooler is configured to increase a portion of a warm-up cycle during which the start-up combustion holder holds the flame. 33. The combustion system of claim 30, wherein the cooler is configured to increase a combustion volume temperature at which the start-up combustion holder holds the flame. 34. The combustion system of claim 33, further comprising: an electronic controller operatively coupled to and configured to control the cooler. 35. The combustion system of claim 33, further comprising: a sensor operatively coupled to the electronic controller and configured to sense a combustion volume attribute. 36. The combustion system of claim 35, wherein the electronic controller is configured to control the cooler responsive to feedback from the sensor. 37. The combustion system of claim 30, wherein the cooler includes a jacket configured to carry a cooling fluid. 38. The combustion system of claim 1, further comprising: a cooler including a coolant nozzle configured to introduce a cooling fluid to the start-up combustion holder. 39. The combustion system of claim 38, wherein the cooler further comprises: a flow control apparatus configured to control a flow of the coolant from a coolant source. 40. The combustion system of claim 39, wherein the flow control apparatus is configured for automatic operation to reduce or stop coolant flow when the combustion reaction is not held by the start-up combustion holder. 41. The combustion system of claim 39, wherein the flow control apparatus is configured for automatic operation to start or increase coolant flow to reestablish holding the flame by the start-up combustion holder. 42. The combustion system of claim 1, wherein the start-up holder is configured as a hollow cylinder disposed circumferentially to the combustion fluid. 43. The combustion system of claim 1, wherein the charge source includes a corona electrode disposed below the start-up combustion holder. 44. The combustion system of claim 1, further comprising: a charge voltage source configured to apply a voltage to the charge source to cause the charge source to apply the electric charge to the combustion fluid. 45. The combustion system of claim 44, further comprising: an electronic controller operatively coupled to the charge voltage source and configured to control a voltage output by the charge voltage source to the charge source.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (48)
Breidenthal, Robert E.; Casasanta, III, Vincenzo; Colannino, Joseph; Goodson, David B.; Prevo, Tracy A.; Rutkowski, Richard F.; Wiklof, Christopher A., Acoustic control of an electrodynamic combustion system.
Lee K. J. (Lawrenceville GA) Cochran ; Jr. Joe K. (Marietta GA) Hwang Tzyy-Jiuan (Alpharetta GA), Advanced radiant gas burner and method utilizing flame support rod structure.
Hartwick, Thomas S.; Goodson, David B.; Wiklof, Christopher A.; Colannino, Joseph, Electric field control of two or more responses in a combustion system.
Dessiatoun,Serguei V.; Ivakhnenko,Igor; Ohadi,Michael M., Electrohydrodynamically (EHD) enhanced heat transfer system and method with an encapsulated electrode.
Canfield Douglas (Suffern NY) Jacobson David (Pomona NY), Heating method and assembly utilizing electric heating elements in conjunction with combustion.
Goodson, David B.; Prevo, Tracy A.; Colannino, Joseph; Breidenthal, Robert E.; Wiklof, Christopher A., Inertial electrode and system configured for electrodynamic interaction with a voltage-biased flame.
Paillaud Pierre (177 ; RUE DE Bretagne 14930 Eterville par Maltot (Calvados) FR) Raymond Joel (177 ; RUE DE Bretagne 14760 Bretteville sur Odon (Calvados) FR), Method and apparatus for improving the energy yield of a reaction.
Goodson, David B.; Prevo, Tracy A.; Colannino, Joseph; Breidenthal, Robert E.; Krichtafovitch, Igor A.; Wiklof, Christopher A., Method for Electrically-driven classification of combustion particles.
Karkow, Douglas W.; Colannino, Joseph; Krichtafovitch, Igor A.; Wiklof, Christopher A., Method for flame location transition from a start-up location to a perforated flame holder.
Thornton, Jimmy D.; Richards, George A.; Dodrill, Keith A.; Nutter, Jr., Roy S.; Straub, Douglas, Real-time combustion controls and diagnostics sensors (CCADS).
Sonnichsen, Tim W.; Colannino, Joseph; Goodson, David B.; Prevo, Tracy A.; Wiklof, Christopher A., Solid fuel burner with electrodynamic homogenization.
Hartwick, Thomas S.; Goodson, David; Rutkowski, Richard F.; Osler, Geoff; Wiklof, Christopher A, System and apparatus for applying an electric field to a combustion volume.
Shukla Kailash C. (Stow MA) Grimanis Michael P. (Medford MA) Hurley James R. (East Weymouth MA) Morgan Dean T. (Sudbury MA), Thermoelectric field burner.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.