NOVELTY - The hydrogen production installation comprises a circuit for supplying purified water, an electrolytic cell for electrolyzing the water received from an inlet and separating a mixture of water and oxygen and a mixture of water and hydrogen through an outlet, a first chamber for separating the mixture of water and oxygen connected to the inlet of the water supply circuit and to an outlet of the mixture of water and oxygen of the cell one side and to an outlet of a circuit for extraction of oxygen and to an inlet of the electrolysis cell on the other side, and a second chamber.    USE - The installation is useful for production of hydrogen, which is useful as a fuel source for a fuel cell and for generating electricity.    ADVANTAGE - The installation is capable of easily, efficiently and economically producing hydrogen at high yield without any greenhouse gas emissions and renewable energy, and provides high chemical and electrochemical stability to the fuel cell.    DETAILED DESCRIPTION - The hydrogen production installation comprises a circuit for supplying purified water, an electrolytic cell for electrolyzing the water received from an inlet and separating a mixture of water and oxygen and a mixture of water and hydrogen through an outlet, a first chamber for separating the mixture of water and oxygen connected to the inlet of the water supply circuit and to an outlet of the mixture of water and oxygen of the cell one side and to an outlet of a circuit for extraction of oxygen and to an inlet of the electrolysis cell on the other side, a second chamber for separating the mixture of water and hydrogen connected in input and output of the mixture of water and hydrogen of the cell on one side and to an output of a circuit for extraction of hydrogen on the other side, a pipe connected to the first and second chambers, a recombination device arranged in the pipe for eliminating the hydrogen trace in the water obtained from second chamber in front of the first chamber, and a control device. The pipe comprises a solenoid valve capable of controlling a transfer of water from the second chamber to the first chamber to achieve regulation of water level between the chambers. The recombination device comprises a catalyst for recombination of hydrogen in water, and is adapted for creating a loss of charge in the pipe. The electrolysis cell comprises a proton exchange membrane. The purified water supply circuit is branched on a water network, and comprises a pressure regulator mounted in series and connected to the purification unit, a reservoir (1) for storing the purified water, a circulation unit (10), and a solenoid valve. The solenoid valve and the circulation unit are activated for supplying water to the first chamber. The first chamber comprises a unit (11) for purification of oxygen for extraction of water, a unit for analysis of gas, a unit for regulation of oxygen pressure, and a first unit for evacuating gas to reduce pressure by releasing oxygen in case of overpressure in the oxygen extraction circuit. The water extracted is reinjected in the reservoir for storing purified water by a pipe. The second chamber comprises a unit for purification of hydrogen for extracting water, a unit for analysis of gas, a unit for regulation of hydrogen pressure, and a second unit for evacuating gas to reduce pressure by releasing hydrogen in case of overpressure in the hydrogen extraction circuit. The extracted water is reinjected in the reservoir for storing purified water by a pipe. The control unit comprises a programmable automaton for controlling the operation of the installation by performing a series of instructions stored in one of its components, whose inputs are connected to the first and second chambers and to a pure water level sensor, a conductivity sensor and a flow sensor mounted in inlet of the electrolysis cell, and a unit for displaying and a seizure unit connected to the programmable automaton. The gas analysis unit is connected to a current generator, which supplies current to the electrolysis cell. The control unit is designed to control the operation of the installation by a possible mode of operation. The programmable automaton is regulated by the flow of gas produced according to the temperature measured by the temperature sensor by varying the voltage generated by the current generator and applied to the terminals of the electrolysis cell according to the reference gas flow provided by the user, and executes a loop of instructions including: measuring the water level in the second chamber; measuring if the water level in the second chamber reaches the maximum level; regulating the oxygen pressure; measuring the pressure in the oxygen and hydrogen extraction circuits; measuring if the pressure difference between the hydrogen and oxygen extraction circuits is above a threshold value; opening the valve mounted on the pipe provided between the first and second chambers, while maintaining a gap so that the second chamber is partially empty in the first chamber; and measuring when the water level in the second chamber reaches a minimum level or when the water level in the first chamber reaches a maximum level and then closing the solenoid valve and oxygen pressure regulator.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of an installation for production of hydrogen.    Reservoir (1)    Hydrogen-water mixture stack (4)    Current generator (5)    First circulation circuit (10)    Water purification unit. (11)