| 摘要 |
PURPOSE:To obtain a seal device with a simple structure, a low cost, high compression efficiency, and high reliability by pressing by pressure a seal member inserted into a groove on a spiral side plate of a scroll by means of the elastic deformation of a pressure fluid. CONSTITUTION:A tip seal 5 is made of an elastic material mold, and it is constituted in a cross section formed by the upper end surface 5b brought into contact by pressure with the end plate surface of a stationary scroll and a recessed portion 5a where the U-shaped rear side of the surface 5e on an opposite side is opened, and a gap 8 is formed between the rear surface 5e and the bottom surface 6c of the groove 6. When the gas is compressed, the high-pressure gas flows into the gap through a notch 7, thus energizing the tip seal 5 upward in the axial direction toward the end plate 1b of the stationary scroll 1 through the U-shaped recessed portion 5a surface, and the upper end surface 5b of the tip seal 5 is slidably brought into contact with the lower surface of the end plate 1b, and the axial sealing is performed. |
