IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0469545
(2002-12-24)
|
등록번호 |
US-7718289
(2010-06-10)
|
우선권정보 |
JP-2002-001570(2002-01-08) |
국제출원번호 |
PCT/JP2002/013438
(2002-12-24)
|
§371/§102 date |
20030910
(20030910)
|
국제공개번호 |
WO03/058740
(2003-07-17)
|
발명자
/ 주소 |
- Asai, Akihiro
- Oosawa, Toshiya
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
9 |
초록
▼
A fuel cell system (S) is provided with a fuel cell body (12), an air supply system (1, 2, 3, 4) supplying air to the fuel cell body, an air flow rate control system (5, 6, 7, 8, 9, 10, 13, 14) varying opening degrees of flow paths, through which air is supplied, to control flow rates of air, and a
A fuel cell system (S) is provided with a fuel cell body (12), an air supply system (1, 2, 3, 4) supplying air to the fuel cell body, an air flow rate control system (5, 6, 7, 8, 9, 10, 13, 14) varying opening degrees of flow paths, through which air is supplied, to control flow rates of air, and a droplet removal structure (3, 8, 9, 10, 13, 14, 19, 20, 21, 22, 23, 24) removing droplets adhered to the air flow rate control system. The droplet removal structure is operative to set the opening degree of the air flow rate control system to have a droplet removal opening degree to increase a speed with which the air flows and allows the air to flow at the droplet removal opening degree for blowing off the droplets adhered to the air flow rate control systems.
대표청구항
▼
The invention claimed is: 1. A fuel cell system comprising: a fuel cell body; an air supply system supplying air to the fuel cell body; an air flow rate control system controlling a flow rate of the air and being arranged in a flow path through which the air is supplied, an opening degree of the fl
The invention claimed is: 1. A fuel cell system comprising: a fuel cell body; an air supply system supplying air to the fuel cell body; an air flow rate control system controlling a flow rate of the air and being arranged in a flow path through which the air is supplied, an opening degree of the flow path being variable to control a flow rate of the air; and a droplet removal structure that includes the air flow rate control system with a controller and a control valve for removing droplets adhered to the air flow rate control system, the controller being configured to control an opening degree of the control valve to be at a droplet removal opening degree, smaller than a fully opening degree, to increase a speed with which the air flows for a variable time interval determined in dependence upon at least one of detected conditions of a temperature of an atmospheric air outside the fuel cell system and a humidity inside the fuel cell system, when a given condition is established at a stop of or after the stop of the fuel cell system, and to allow the air to flow at the droplet removal opening degree to cause the droplets adhered to the air flow rate control system to be blown off. 2. The fuel cell system according to claim 1, further comprising: a reformer reforming feed material to produce reformed gas to be supplied to the fuel cell body, the reformed gas being supplied to the fuel cell body; and a combustor receiving exhaust gases emitted from the fuel cell body and the air delivered from the air supply system to be combusted, wherein the air flow rate control system is controllable to vary an opening degree of each of flow paths leading from the air flow rate control system to the reformer, the fuel cell body and the combustor, respectively, to control the flow rate of the air, and the droplet removal structure is operative to set the opening degree of the air flow rate control system at the droplet removal opening degree, when the given condition is established at the stop of or after the stop of the fuel cell system under a condition in which a temperature of the fuel cell system is lowered, to allow the air to flow at the droplet removal opening degree to cause the droplets adhered to the air flow rate control system to be blown off. 3. The fuel cell system according to claim 1, further comprising: a hydrogen storage section storing hydrogen gas to be supplied to the fuel cell body; and a combustor receiving exhaust gases emitted from the fuel cell body and the air delivered from the air supply system to be combusted, wherein the air flow rate control system is controllable to vary an opening degree of each of flow paths leading from the air flow rate control system to the fuel cell body and the combustor, respectively, to control the flow rate of the air, and the droplet removal structure is operative to set the opening degree of the air flow rate control system at the droplet removal opening degree, when the given condition is established at the stop of or after the stop of the fuel cell system under a condition in which a temperature of the fuel cell system is lowered, to allow the air to flow at the droplet removal opening degree to cause the droplets adhered to the air flow rate control system to be blown off. 4. The fuel cell system according to claim 1, wherein the given condition corresponds to a situation in which an atmospheric temperature of the fuel cell system is equal to or below a given temperature at the stop of or after the stop of the fuel cell system. 5. The fuel cell system according to claim 1, wherein the given condition corresponds to a situation in which a humidity in the fuel cell system is substantially equal to a given humidity at the stop of or after the stop of the fuel cell system. 6. The fuel cell system according to claim 1, wherein the given condition corresponds to a situation in which a difference between an atmospheric temperature of the fuel cell system and a temperature in the fuel cell system is equal to or below a given temperature difference at the stop of or after the stop of the fuel cell system. 7. The fuel cell system according to claim 1, wherein the given condition corresponds to a situation in which an amount of moisture, by which the air flow rate control system is frozen, is equal to or more than an amount of moisture, which is removable by use of a driving force of the air flow rate control system, at the stop of or after the halt of the fuel cell system. 8. The fuel cell system according to claim 1, wherein the droplet removal structure blows off the droplets adhered to the air flow rate control system using dry air whose moisture is removed by a moisture absorbing mechanism. 9. The fuel cell system according to claim 8, wherein the moisture absorbing mechanism includes a hygroscopic material which is regenerative by exhausting moisture, heated with a heat of a combustor and accumulated therein, at a start-up of the fuel cell system. 10. The fuel cell system according to claim 8, wherein a weight of the moisture absorbing mechanism is detected and, when the weight is equal to or below a given value, information is made that the moisture absorbing mechanism is to be replaced. 11. The fuel cell system according to claim 1, further comprising: an accumulator section accumulating air to be used for removing the droplets, wherein the accumulator section is operative to accumulate the air to be supplied to the air supply system and, subsequently, the air is caused to flow toward an upstream of the fuel cell system in a reverse direction. 12. The fuel cell system according to claim 11, wherein the accumulator section has a moisture absorbing material that removes moisture from the air accumulated in the accumulator section. 13. The fuel cell system according to claim 1, further comprising: a droplet removal air supply section operative to pressurize the air supplied from the air supply system for removing the droplets, wherein a plurality of air flow rate control systems are disposed in series and each of the plurality of air flow rate control systems is configured to be opened at the droplet removal opening degree, in sequence in which the plurality of air flow rate control systems are closer to the droplet removal air supply section, while fully opening the other of the plurality of air flow rate control systems. 14. The fuel cell system according to claim 1, wherein a plurality of air flow rate control systems are disposed in parallel to one another and one of the plurality of air flow rate control systems with droplets to be removed is opened at the droplet removal opening degree while fully closing the other of the plurality of air flow rate control systems. 15. The fuel cell system according to claim 14, further comprising: a droplet removal air supply section operative to pressurize the air supplied from the air supply system for removing the droplets, wherein it is configured such that the larger the distance from the droplet removal air supply section, the longer will be the time interval in which when the droplets are removed, the droplet removal opening degree of each of the plurality of air flow rate control systems is kept. 16. The fuel cell system according to claim 1, wherein a time interval in which the air flow rate control system is kept at the droplet removal opening degree is varied in accordance with surrounding conditions of the air flow rate control system. 17. The fuel cell system according to claim 16, wherein a time interval in which the air flow rate control system is kept at the droplet removal opening degree is varied in accordance with a temperature in the fuel cell system. 18. The fuel cell system according to claim 16, wherein a time interval in which the air flow rate control system is kept at the droplet removal opening degree is varied in accordance with a humidity of the fuel cell system. 19. The fuel cell system according to claim 1, wherein the droplet removal opening degree is periodically varied. 20. A fuel cell system comprising: a fuel cell body; air supply means for supplying air to the fuel cell body; air flow rate control means for controlling a flow rate of the air, while being arranged in a flow path through which the air is supplied, an opening degree of the flow path being variable to control a flow rate of the air; and droplet removal means for removing droplets adhered to the air flow rate control means, the droplet removal means including the air flow rate control means and a controller, the controller being configured to control an opening degree of the air flow rate control means to be at a droplet removal opening degree, smaller than a fully opening degree, to increase a speed with which the air flows for a variable time interval determined in dependence upon at least one of detected conditions of a temperature of an atmospheric air outside the fuel cell system and a humidity inside the fuel cell system, when a given condition is established at a stop of or after the stop of the fuel cell system, and to allow the air to flow at the droplet removal opening degree to cause the droplets adhered to the air flow rate control means to be blown off.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.