GASEOUS FLUID COMPRESSION DEVICE

Disclosed herein is an apparatus for compressing gas-phase fluid (1a, 1b). The apparatus (1a, 1b) includes a housing (2) having a wall (12), a non-motional stator (3) having a base plate (3a) and a helical wall (3b) extending from one side of the base plate (3a), and a motional orbiter (4) having a base plate (4a) and a helical wall (4b) extending from the base plate (4a). The base plates (3a, 4a) are disposed such that the wall (3b) of the stator (3) and the wall (4b) of the orbiter (4) engage with each other to define closed working chambers (5). The volumes and positions of the working chambers (5) are changed in response to the motion of the orbiter (4). The apparatus (1a, 1b) includes a guide device (11) having at least one opening (11a) formed in the base plate (4a) of the orbiter (4) and at least one pin (11b) fixedly coupled to and protruding from the housing. The pin (11b) engages into the opening (11a). The apparatus (1a, 1b) includes a sliding element (17a, 17b) disposed between the wall (12) of the housing (2) and the orbiter (4) and fixedly coupled to the wall (12), and the at least one pin (11b) is pressed into an opening formed in the sliding element (17a, 17b).