Fecha de publicación: 11/01/2019 Fuente: WIPO "bee" According to the present invention, a free rotation type fluid machine can include: a main body provided in a hollow cylindrical shape and having an outer circumferential surface formed in a circular shape and an inner circumferential surface formed in an elliptical shape; a rotor provided inside the main body and rotating around the same center as the rotation center of the main body; at least one or more tip seals provided in the rotor and coming into contact with the inner circumferential surface of the main body; a blade positioned between the tip seals provided adjacent to each other; and a separation preventing means for preventing the tip seal from separating by the centrifugal force generated by the rotor. According to the embodiments of the present invention, the free rotation type fluid machine prevents the separation of the tip seal from the blades caused by the centrifugal force by means of the separation preventing means such that the space between the tip seal and the main body can be sealed and the leakage of the working fluid introduced into a combustion space can be prevented. COPYRIGHT KIPO 2019