Abstract: A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.

Abstract: 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.

Abstract: A fuel cell system including: a hydrogen generator for causing a reforming reaction of a material gas to generate a hydrogen-containing fuel gas; a fuel cell configured to cause a reaction between the fuel gas generated by the hydrogen generator and an oxygen-containing oxidizing gas; a combustor configured to combust at least one of the material gas and an off fuel gas discharged from the fuel cell; a casing configured to accommodate the hydrogen generator, the fuel cell, and the combustor; a first exhaust port, formed on the casing and through which the flue gas from the combustor is discharged to an outside of the casing; a first intake port formed on the casing; suction units configured to suction air through the first intake port into the casing; and a CO detector configured to detect carbon monoxide contained in the air suctioned through the first intake port.

Abstract: A fuel cell system comprises a fuel cell unit for generating electric power using fuel gas and oxidizing gas and supplying the electric power; a condensed water tank for storing condensed water recovered from gas exhausted from the fuel cell unit; a water supply passage through which water is supplied from the condensed water tank to the fuel cell unit; and a water purifier disposed on the water supply passage to purify at least ions in the water; the water purifier including an ion-exchange resin layer, an antibacterial agent layer disposed upstream of the ion-exchange resin layer in a flow direction, an active carbon layer disposed between the ion-exchange resin layer and the antibacterial agent layer, and a first gap formed between the active carbon layer and the ion-exchange resin layer.

Abstract: A layer-built heat exchanger has channels formed by dividers in a first-side plate 32 and a second-side plate 33. A seal plate 3 is interposed between the first- and second-side plates. The first-side plate 32 and second-side plate 33 are positioned relative to each other such that dividers 35 of the second-side plate 33 are in line with channels 36 of the first-side plate 32, and dividers 34 of the first-side plate 32 are in line with the channels 37 of the second-side plate 33, thus preventing deformation of the seal plate 3 due to a high differential pressure between the coolants flowing through the channels of the first- and second-side plates. The corners of the first-side plate 32, second-side plate 33, and seal plate 3 are also shaped differently so that omission of one of the component plates can be easily confirmed.