Abstract: A steam generator includes a body defining therein a flow passage having an inlet and an outlet, a heater installed in the body and adapted for heating water being guided through the inlet of the flow passage into the inside of the flow passage into steam for enabling generated steam to flow out of the outlet of the flow passage, and at least one friction unit mounted in the flow passage and movable by generated steam to rub against the inside wall of the flow passage and to remove water scale from the inside wall. Thus, the steam generator uses the friction unit to remove water scale from the inside wall of the flow passage during operation, avoiding water scale accumulation and prolonging the lifespan.

Abstract: A steam generator includes a body defining therein a flow passage having an inlet and an outlet, a heater installed in the body and adapted for heating water being guided through the inlet of the flow passage into the inside of the flow passage into steam for enabling generated steam to flow out of the outlet of the flow passage, and at least one friction unit mounted in the flow passage and movable by generated steam to rub against the inside wall of the flow passage and to remove water scale from the inside wall. Thus, the steam generator uses the friction unit to remove water scale from the inside wall of the flow passage during operation, avoiding water scale accumulation and prolonging the lifespan.

Abstract: An electric steam iron includes a steam generator with an output port, a switching device formed of a body and a movable member. The body has an inlet in air communication with the output port, a first outlet, a second outlet, a first passage in air communication with the inlet and the first outlet, and a second passage in air communication with the inlet and the second outlet. The movable member is disposed in the intersection between the first passage and the second passage and movable between a first position where steam goes out of the first outlet and a second position where steam goes out of the second passage. A cleaning device has a connector for connection to the body of the switching device to move the movable member from the first position to the second position and a nozzle connected to the connector for steam output.

Abstract: The present invention discloses as a steam that includes an iron casing, a first steam outlet, a second steam outlet, a heating member installing a water input portion and a steam output portion disposed at the iron casing, and a switch valve connected to the steam output portion and the first and second steam outlets. The switch valve having a switching routine for a first switch position and a second switch position is used for determining whether the steam heated by the steam output portion is outputted from the first steam outlet or the second steam outlet. The steam iron can provide both board-type and standing-type designs of steam irons and improve the value of the steam iron significantly.

Abstract: A steam iron includes a housing, a water tank and a boiler mounted in the housing, a water supply pipe for guiding water from the water tank to the boiler for boiling, a relief pipe connected between the boiler and the water tank for guiding steam from the boiler to the water tank when an internal pressure of the boiler is excessively high, a valve flap-operated one-way check valve mounted in the water supply pipe to let water pass from the water tank to the boiler and stop steam from pass through the water supply pipe to the water tank, and a piston-operated relief valve mounted in the relief pipe for enabling steam to pass to the water tank when the internal pressure of the boiler is excessively high.

Abstract: A steam iron includes a housing, a water tank and a boiler mounted in the housing, a water supply pipe for guiding water from the water tank to the boiler for boiling, a relief pipe connected between the boiler and the water tank for guiding steam from the boiler to the water tank when an internal pressure of the boiler is excessively high, a valve flap-operated one-way check valve mounted in the water supply pipe to let water pass from the water tank to the boiler and stop steam from pass through the water supply pipe to the water tank, and a piston-operated relief valve mounted in the relief pipe for enabling steam to pass to the water tank when the internal pressure of the boiler is excessively high.

Abstract: A safety structure of a steam ironing machine is formed of a main body, a boiler disposed in the main body for generating steam, and a water tank set disposed in the main body and formed of a water storage tank and a water level safety device for activating and deactivating the steam ironing machine on the basis of the water level in the water storage tank.