METHOD FOR FORMING CORROSION-PROOF FILM FOR CLOSED CIRCULATION TYPE ABSORPTION REFRIGERATOR AND ABSORPTION REFRIGERATOR

摘要

PURPOSE:To improve a corrosion durability by a method wherein a composite film of molybde num oxide and iron oxide is formed on at least a surface of a component member contacting with absorptive liquid. CONSTITUTION:A composite film of molybdenum oxide and iron oxide has a high anti- corrosion characteristic and then a reliability in anti-corrosion characteristic of a closed circulation type absorptive freezer having this film formed on an inner wall of a high tempera ture regenerator is remarkably increased. In case that an anti-corrosion protection film is formed on an inner wall by operating a high temperature regenerator 1a, valves 17a and 17c are closed, a valve 17e is released, a film forming liquid is fed from the valve 17e to a specified level, the valve 17e is closed, the valve 17b is opened, the high temperature regenera tor is heated under its operation and the film forming liquid is circulated by using the recirculating pipe 16. At this time, generated water vapor 14 is returned back to water by a condensor 2 to act as a refrigerant. This refrigerant 11 is supplied to the high temperature regenerator 1a by using the refrigerant supplying pipe 18 and by opening the valve 17d. With this operation, a concentration of the film forming liquid within the high temperature regenerator 1a is kept constant and then an anti-corrosion protection film is formed at an inner wall of the high temperature regenerator and the pipe.