SEAL STRUCTURE FOR CASINGS, COMPRESSOR WITH SEAL STRUCTURE AND SEAL MEMBER APPLIED IN SEAL STRUCTURE

PROBLEM TO BE SOLVED: To provide a seal structure for casings, a compressor using the seal structure and a seal member applied in the seal structure in which the most preferable seal performance can be realized while promoting small-sized casings by controlling a surface pressure forming location at the seal member.SOLUTION: This invention relates to a seal structure [36] for casings in which one end surface [4b1] of each of opposing end surfaces [4b1, 14c1] of two casings [4, 14] is formed with an annular groove [38], an annular seal member [40] is installed in the annular groove to abut against each end surface to seal between the casings. The seal structure is constituted in such a way that an annular outer peripheral seal part [66] for pressing an outer peripheral surface [42] of the seal member against an outer peripheral wall surface [38a] of the annular groove and an annular end surface seal part [68] for pressing an end surface side surface [46] of the seal member against the other end surface [14c1] are formed and the outer peripheral seal part and the end surface seal part form a continuous seal part [74] where the seal is continuous from the outer peripheral wall surface to the other end surface.SELECTED DRAWING: Figure 7 【課題】シール部材における面圧形成箇所を制御することにより、筐体の小型化を促進しながら最適なシール性能を実現することができる筐体のシール構造、そのシール構造を用いた圧縮機、及びそのシール構造に用いられるシール部材を提供する。【解決手段】２つの筐体（４、１４）の対向する各端面（４ｂ１，１４ｃ１）のうちの一端面（４ｂ１）に環状溝（３８）が形成され、環状溝に環状のシール部材（４０）を装着し、各端面を当接して筐体間をシールする筐体のシール構造（３６）であって、シール構造は、シール部材の外周面（４２）を環状溝の外周壁面（３８ａ）に押圧してなる環状の外周シール部（６６）と、シール部材の端面側面（４６）を筐体の他端面（１４ｃ１）に押圧してなる環状の端面シール部（６８）とを形成し、外周シール部及び端面シール部は、外周壁面から他端面に亘ってシールが連続した連続シール部（７４）を形成する。【選択図】図７