Scroll-type fluid machine including thrust receiving device

A scroll-type fluid machine comprising:

• a fixed scroll that is fixed in a housing;
• a movable scroll that forms pressure chambers in between the movable and fixed scrolls and is orbitable relative to the fixed scroll,
• a support wall that is provided for the housing and supports thrust load transmitted from the movable scroll;
• and
• a thrust-receiving device that is disposed in between the movable scroll and the support wall, the thrust-receiving device including
• a recess formed in the support wall,
• a pressure-receiving piece that is retained in the recess, and
• an abrasion-resistant board that is set in between the movable scroll and the pressure-receiving piece and has a sliding surface that slides against the pressure-receiving piece, wherein the abrasion-resistant board has a larger external diameter than the movable scroll, and the movable scroll includes a chamfered outer circumferential edge.

A scroll-type fluid machine comprising:

• a fixed scroll that is fixed in a housing;
• a movable scroll that forms pressure chambers in between the movable and fixed scrolls and is orbitable relative to the fixed scroll,
• a support wall that is provided for the housing and supports thrust load transmitted from the movable scroll;
• and
• a thrust-receiving device that is disposed in between the movable scroll and the support wall, the thrust-receiving device including
• a recess formed in the support wall,
• a pressure-receiving piece that is retained in the recess, and
• an abrasion-resistant board that is set in between the movable scroll and the pressure-receiving piece and has a sliding surface that slides against the pressure-receiving piece,
• wherein the abrasion-resistant board has a larger external diameter than the movable scroll, and
• an outer circumferential portion of the abrasion-resistant board, which is radially expanded beyond the outer circumferential edge of the movable scroll, is curved opposite to the support wall.