Abstract: A working machine includes a machine body, a front wheel and a rear wheel provided apart from each other in a front-rear direction of the machine body, a working portion provided between the front wheel and the rear wheel and including a power source and a cutter blade capable of being rotated around a rotary shaft by the power source, and a compaction roller provided between the front wheel and the rear wheel.

Abstract: A reformer and an evaporator of a fuel cell module are provided adjacent to each other. An exhaust gas combustion chamber which combusts a fuel exhaust gas and an oxygen-containing exhaust gas discharged from a fuel cell to produce a combustion exhaust gas includes a first chamber and a second chamber connected to each other, and a combustion chamber outlet for discharging the combustion exhaust gas in the exhaust gas combustion chamber. At least part of an outer wall surface of the first chamber faces the evaporator with clearance. At least part of a wall forming the second chamber is a common wall shared with the reformer.

Abstract: A reformer and an evaporator of a fuel cell module are provided adjacent to each other. An exhaust gas combustion chamber which combusts a fuel exhaust gas and an oxygen-containing exhaust gas discharged from a fuel cell to produce a combustion exhaust gas includes a first camber and a second chamber connected to each other, and a combustion chamber outlet for discharging the combustion exhaust gas in the exhaust gas combustion chamber. At least part of an outer wall surface of the first chamber faces the evaporator with clearance. At least part of a wall forming the second chamber is a common wall shared with the reformer.

Abstract: A fuel cell module includes a fuel cell stack, a reformer, and an exhaust gas combustor. The fuel cell module further includes an exhaust gas combustion chamber equipped with the exhaust gas combustor and a preheating unit for heating a raw fuel by combustion exhaust gas produced in the exhaust gas combustor before the raw fuel is supplied to the reformer. The preheating unit forms one surface of the exhaust gas combustion chamber.

Abstract: In a fuel cell, an electrolyte electrode assembly is sandwiched by a pair of separators, which include a sandwiching section having a fuel gas channel for supplying a fuel gas to an anode and a fuel gas inlet for supplying the fuel gas to the fuel gas channel, a bridge having a fuel gas supply channel for supplying the fuel gas to the fuel gas channel, and a fuel gas supply section having a fuel gas supply passage for supplying the fuel gas to the fuel gas supply channel. During operation of the fuel cell, a pressure loss P1 by the fuel gas in the fuel gas inlet, a pressure loss P2 by the fuel gas in the fuel gas supply channel, and a pressure loss P3 by the fuel gas in the fuel gas supply passage have the relationships of P1>P2 and P1>P3.

Abstract: A fuel cell module includes a fuel cell stack and FC peripheral equipment. In the fuel cell module, a stress relaxing portion for relaxing heat stress is provided at least along a boundary between a central area and one of outer annular areas or between the outer annular areas. The stress relaxing portion includes a plurality of curved portions including a first curved portion having the largest radius, and a second curved portion and a third curved portion, which are formed respectively at both ends of the first curved portion such that a space lies on the outer side of each of the second and third curved portions.

Abstract: A fuel cell module is made up of a fuel cell stack and fuel cell peripheral equipment. The fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area and where a reformer and an evaporator are provided, and an annular third area around the second area and where a heat exchanger is provided.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area where a heat exchanger is provided, an annular third area around the second area where a reformer is provided, an annular fourth area around the third area where an evaporator is provided. A plurality of heat exchange pipes are provided in the heat exchanger around a first partition plate. At least one of the heat exchange pipes has at least one constricted portion.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area where a heat exchanger is provided, an annular third area around the second area where a reformer is provided, an annular fourth area around the third area where an evaporator is provided. The heat exchanger includes heat exchange pipes connected to an oxygen-containing gas supply chamber and an oxygen-containing gas discharge chamber. A first circumscribed non-uniform flow suppression plate is provided along a minimum circumscribed circle which contacts outer surfaces of the heat exchange pipes.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area and where a reformer and an evaporator are provided, an annular third area around the second area and where a heat exchanger is provided, and an annular heat recovery area around the third area as a passage of oxygen-containing gas for recovery of heat radiated from the third area toward the outer circumference.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, a second area where a reformer and a heat exchanger are provided, a third area where an evaporator is provided, and a condensed water recovery mechanism for recovering condensed water produced by condensation of water vapor contained in the combustion gas by allowing the condensed water to flow from the third area to the second area and then flow from the second area to the first area.

Abstract: A heat exchanger of a fuel cell module includes a plurality of heat exchange pipes connected to an oxygen-containing gas supply chamber at one end, and connected to an oxygen-containing gas discharge chamber at the other end. An end of an oxygen-containing gas inlet pipe for guiding the oxygen-containing gas to the oxygen-containing gas supply chamber is provided in the oxygen-containing gas supply chamber. A plurality of first inlet holes extend through the oxygen-containing gas inlet pipe in an axial direction, and a plurality of second inlet holes extend through the oxygen-containing gas inlet pipe radially. The total area of openings of the first inlet holes is smaller than the total area of openings of the second inlet holes.

Abstract: A fuel cell module includes a fuel cell stack and FC peripheral equipment. The FC peripheral equipment includes an evaporator. At least one of evaporation pipes of the evaporator connects a water vapor discharge chamber and an inlet of a reformer to form an evaporation return pipe as a passage of water vapor. A raw fuel pipe is inserted into the evaporation return pipe for allowing a raw fuel to flow from the downstream side to the upstream side of the evaporation return pipe.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, a second area where a reformer and a heat exchanger are provided, and a third area where an evaporator is provided. A stress relaxing portion for relaxing heat stress is provided at least along a border between the first area and the second area, along a border between the second area and the third area, or along an outermost portion of the third area.

Abstract: A fuel cell module includes a fuel cell stack and fuel cell peripheral equipment. The fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, a second area where a reformer and an evaporator are provided, and a third area where a heat exchanger is provided. The fuel cell module further includes a condensed water recovery mechanism for recovering condensed water produced through condensation of water vapor contained in a combustion gas, by flowing the condensed water through the third area, the second area, and the first area in that order.

Abstract: A fuel cell module (includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area and where a reformer and a heat exchanger are provided, and an annular third area around the second area and where an evaporator is provided. Second circumscribed non-uniform-flow suppression plates are provided along the minimum circumscribed circles which contact outer surfaces of heat exchange pipes of the heat exchanger.

Abstract: A control device includes a combustion apparatus temperature comparison unit for comparing a temperature of a combustion apparatus and a combustion apparatus temperature range, a combustion apparatus flame-out determination unit for determining whether flame-out occurs in the combustion apparatus based on a comparison result by the combustion apparatus temperature comparison unit, and a combustion apparatus control unit for starting or stopping operation of a start-up combustor based on a determination result by the combustion apparatus flame-out determination unit.

Abstract: A fuel cell (FC) module includes a fuel cell stack and FC peripheral equipment. The fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area and where a reformer and a heat exchanger are provided, and an annular third area around the second area and where an evaporator is provided.

Abstract: A casing of a fuel cell system is divided into a fluid supply section, a module section, and an electrical equipment section by a first vertical partition plate and a second vertical partition plate. The first vertical partition plate extends from a front plate of the casing toward a back plate of the casing. The first vertical partition plate has a recess formed by bending a marginal end portion of the first vertical partition plate on the back plate side toward the module section at a predetermined angle. At least a raw fuel pipe of the fuel gas supply apparatus as a passage of a raw fuel is provided in the recess.

Abstract: A fuel cell module includes a first area where an exhaust gas combustor and a start-up combustor are provided, an annular second area around the first area and where a reformer and an evaporator are provided, and an annular third area around the second area and where a heat exchanger is provided. The exhaust gas combustor and the start-up combustor are provided coaxially with and separately away from each other.