| 摘要 |
A fuel cell system of the present invention is a fuel cell system including a fuel cell and includes a medium circulation passage, a heat medium tank, a first circulator, a recovered water tank, a water circulation passage, a second circulator, a water purifier, a temperature detector, and a controller. The heat medium circulation passage and the water circulation passage are configured so as to realize heat exchange between a heat medium and water. The controller executes a circulation operation in which when the temperature detector detects a temperature lower than a first temperature capable of sterilizing microorganisms, the second circulator is caused to operate such that the temperature detected by the temperature detector becomes the first temperature or higher. The controller forbids the operation of the second circulator when the temperature detector detects a temperature equal to or higher than a second temperature that is lower than a temperature at which heat deterioration of the water purifier occurs. |
| 主权项 |
1. A fuel cell system including a fuel cell, the fuel cell system comprising:
a heat medium circulation passage through which a heat medium for recovering exhaust heat of the fuel cell circulates; a heat medium tank disposed on the heat medium circulation passage and configured to store the heat medium; a first circulator disposed on the heat medium circulation passage and configured to cause the heat medium to circulate; a recovered water tank configured to store water recovered from an exhaust gas generated by the fuel cell system; a water circulation passage which is connected to the recovered water tank and through which the water circulates; a second circulator disposed on the water circulation passage and configured to cause the water to circulate; a water purifier disposed on the water circulation passage and configured to purify the water; a temperature detector provided at any one of the recovered water tank, the water purifier, and the water circulation passage extending between the recovered water tank and the water purifier and configured to detect a temperature of the water; a controller; a hot water tank configured to store hot water which performs heat exchange with the heat medium; a hot water circulation passage which is connected to the hot water tank and through which the hot water circulates; a second heat exchanger disposed on both the heat medium circulation passage and the hot water circulation passage; and a third circulator disposed on the hot water circulation passage and configured to cause the hot water to circulate, wherein: the heat medium circulation passage and the water circulation passage are configured so as to realize heat exchange between the heat medium and the water, the controller includes one or more of a microcomputer, a micro processing unit (MPU), a programmable logic controller (PLC) and a logic circuit, and a memory storing a program, the program, when executed by the one or more of a microcomputer, an MPU, a PLC and a logic circuit, causes the controller to, while the fuel cell system is in a stop state:
execute a circulation operation in which when the temperature detector detects a temperature lower than a first temperature capable of sterilizing microorganisms, the first to third circulators are controlled such that the temperature detected by the temperature detector becomes not lower than the first temperature and lower than a second temperature that is a temperature higher than the first temperature and lower than a temperature at which heat deterioration of the water purifier occurs; andforbid the operation of the second circulator when the temperature detector detects a temperature equal to or higher than the second temperature, the stop state is a period from when the controller starts a stop process of the fuel cell system in a case where a stop command is input to the controller or in a case where a predetermined stop time has come until when the stop process terminates, and the program, when executed, further causes the controller to execute the circulation operation for a second predetermined time every first predetermined time. |
