Abstract: Electronic device includes first wireless communication interface; second wireless communication interface; and controller.

Abstract: A condensate water drain control system for fuel cells includes a fuel cell stack configured to generate electric power through chemical reaction, a fuel supply line configured to recirculate fuel discharged from the fuel cell stack together with fuel introduced from a fuel supply valve, a water trap located in the fuel supply line, the water trap being configured to collect condensate water discharged from the fuel cell stack, a drain valve configured to discharge the condensate water stored in the water trap to the outside when opened, and a drain controller configured to determine whether the fuel supply valve is controlled such that pressure in the fuel supply line is maintained before the drain valve is opened and to sense discharge of fuel from the fuel supply line through the drain valve upon determining that the pressure is maintained.

Abstract: A water pressure regenerated type water softener including: a timer control valve having a valve control unit rotated by a timer spring and into which raw water is supplied; a plurality of conduits into which the raw water selectively flows under the control of the timer control valve; a regeneration tank communicating with a regeneration tank inlet conduit of the conduits; and a resin tank unit receiving regeneration water flowing from the regeneration tank and containing an ion exchange resin therein. The water softener can be operated in one of stop mode, soft water mode, raw water mode and regeneration mode under the control of the valve control unit. When regeneration mode is selected, the valve control unit rotates to stop mode by the timer spring after a preset amount of time has elapsed.

Abstract: Disclosed herein is an apparatus and method of producing regenerative water. The apparatus includes a main body, a basket, a regenerative substance block and an on/off valve. The main body has a water inlet port through which raw water is supplied into the main body, a water outlet port through which regenerative water is discharged out of the main body, and a drain port which drains an excess of raw water or regenerative water. The basket is provided in the main body. The regenerative substance block is contained in the basket and dissolved by the raw water. The on/off valve is provided on the water outlet port. The raw water dissolves the regenerative substance block for a predetermined duration. When the on/off valve is opened, the produced regenerative water is supplied through the water outlet port into a soft water tank.

Abstract: A water pressure regenerated type water softener including: a timer control valve having a valve control unit rotated by a timer spring and into which raw water is supplied; a plurality of conduits into which the raw water selectively flows under the control of the timer control valve; a regeneration tank communicating with a regeneration tank inlet conduit of the conduits; and a resin tank unit receiving regeneration water flowing from the regeneration tank and containing an ion exchange resin therein. The water softener can be operated in one of stop mode, soft water mode, raw water mode and regeneration mode under the control of the valve control unit. When regeneration mode is selected, the valve control unit rotates to stop mode by the timer spring after a preset amount of time has elapsed.

Abstract: Disclosed herein is an apparatus and method of producing regenerative water. The apparatus includes a main body, a basket, a regenerative substance block and an on/off valve. The main body has a water inlet port through which raw water is supplied into the main body, a water outlet port through which regenerative water is discharged out of the main body, and a drain port which drains an excess of raw water or regenerative water. The basket is provided in the main body. The regenerative substance block is contained in the basket and dissolved by the raw water. The on/off valve is provided on the water outlet port. The raw water dissolves the regenerative substance block for a predetermined duration. When the on/off valve is opened, the produced regenerative water is supplied through the water outlet port into a soft water tank.