NOVELTY - The vaporizer useful in power generation apparatus for vaporizing a liquid fuel, comprises a gas-liquid separation film separating a gas included in a supplied liquid and that allows the separated gas to pass through the film, a liquid aspiration unit (31) including a porous material to aspirate the liquid, and a unit (35) in downstream of the film for heating a downstream end portion of the liquid aspiration unit. The liquid aspiration unit is provided at the downstream side of the gas-liquid separation film. A gas piping is arranged to collect the gas.    USE - The vaporizer is useful in a power generation apparatus for vaporizing a liquid fuel, where the power generation apparatus is useful in an electronic equipment (all claimed) to generate electricity.    ADVANTAGE - The vaporizer can be able to effectively and correctly control the amount of fluid that flows in it thus capable of stably supplying the fuel gas to the power generation cell even when bubbles are formed in the upper stream side of the vaporizer.    DETAILED DESCRIPTION - The vaporizer useful in power generation apparatus for vaporizing a liquid fuel, comprises a gas-liquid separation film separating a gas included in a supplied liquid and that allows the separated gas to pass through the film, a liquid aspiration unit (31) including a porous material to aspirate the liquid, and a unit (35) in downstream of the film for heating a downstream end portion of the liquid aspiration unit. The liquid aspiration unit is provided at the downstream side of the gas-liquid separation film. A gas piping is arranged to collect the gas that passes through the gas-liquid separation film, and sends the gas that passed through the gas-liquid separation film to a combustor. The gas is generated by a unit that supplies the liquid to the heating unit. The supply unit includes an electro-osmotic flow pump, a piezo pump or a syringe pump. INDEPENDENT CLAIMS are included for:    (1) a power generation apparatus; and    (2) an electronic equipment.    DESCRIPTION OF DRAWING(S) - The figure shows a cross sectional view of an outline structure of the vaporizer.    Liquid aspiration unit (31)    Contractile tube (32)    Discharge unit (33)    Elastic tube (34)    Heating unit. (35)