PROBLEM TO BE SOLVED: To provide a pressure vessel in which generation of chips or peeling of painting between a sliding door and a member for supporting the door can be prevented and the door can be smoothly opened and closed.SOLUTION: A pressure vessel 30 is provided that comprises a body 32 with an opening 31 formed at its one end side and a door 36 which is slidingly opened and closed with respect to the opening 31. The pressure vessel 30 further comprises: at least four or more guide rollers 50 in both side surfaces of the door 36 along its sliding direction two guide parts 44 which are arranged opposite to both side surfaces of the door 36 and into which each of the guide rollers 50 advances first energizing means 62 for energizing at least two of each of the guide rollers 50 toward the opening 31 and second energizing means 82 for energizing at least two guide rollers 50 other than the guide rollers 50 provided with the first energizing means 62 in a direction in which at least the two guide rollers 50 separate from the opening 31.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】スライドする扉と、扉を支持する部材との間で、切粉の発生や塗装の剥げを防止でき、且つ扉のスムーズな開閉を行える圧力容器を提供する。【解決手段】一端側に開口部31が形成された本体32と、開口部31に対してスライド開閉する扉36とを備える圧力容器30において、扉36のスライド方向に沿った両側面には、少なくとも4つ以上のガイドローラ50が設けられ、扉36の両側面に対向して配置され、各ガイドローラ50が進入する2本のガイド部44が設けられ、各ガイドローラ50のうち少なくともいずれか2つを開口部31方向に付勢させる第1の付勢手段62が設けられ、各ガイドローラ50のうち第1の付勢手段62を設けた以外の少なくとも他の2つを開口部31から離間する方向に付勢させる第2の付勢手段82とを具備する。【選択図】図3
