BYPASS DEVICE FOR FLUID CIRCUIT AND CIRCUIT COMPRISING SAME

摘要

The invention concerns a bypass device for a fluid circuit, in particular a gas circuit (4, 8) for circulating fluid comprising two separate sections (4, 8) for circulating fluid provided each with an upstream end and a downstream end, the upstream end of each fluid circulating section (4, 8) being capable of being in fluid communication with a fluid input port (E) of a circuit, the downstream end of each section (4, 8) being capable of being in fluid communication with a fluid output port (S) of a circuit. The invention is characterized in that each circulating section (4, 8) is mounted mobile relative to a fixed base (1, 6) between a first position in which the upstream and downstream ends of said section (4, 8) are in fluid communication with respectively the fluid input port (E) and output port (S), and a second retracted position in which the upstream and downstream ends (4, 8) of said circulating section (4, 8) are not in fluid communication respectively with the fluid input port (E) and output port (S), the two circulating sections (4, 8) being connected by a movement coupling element relative to the base (1, 6) between a first working position in which the upstream and downstream ends of a first section (8) are in fluid communication with respectively the fluid input port (E) and output port (S), and a second bypass position in which the upstream and downstream ends of the second section (4) are in fluid communication with respectively the fluid input port (E) and output port (S), the two sections (4, 8) are arranged relatively to the base (1, 6) such that, between the working position and the bypass position, the two sections (4, 8) pass through at least one intermediate position in which the upstream ends of the two sections (4, 8) are simultaneously in fluid communication with the fluid output port (S), to provide a bypass for the fluid of one section towards the other without interrupting the fluid flow between the input port (E) and the output port (S).