Gas bearing device

A gas bearing device comprising:

• a bump foil that is disposed on a stationary holding member facing a rotating member and that has a corrugated shape including a plurality of continuous peak portions;
• and
• a top foil that is disposed on the bump foil,
• wherein the bump foil includes a first bump foil on a rotating member side and a second bump foil on a stationary holding member side, which are disposed to face each other,
• the first bump foil and the second bump foil engage with each other such that inclined surfaces of peak portions of the first bump foil and the second bump foil overlap with each other, and
• gaps are formed respectively between tops and between bottoms of the peak portions of the first bump foil and the second bump foil overlapping with each other,
• wherein the first bump foil includes a first bump one-side inclined surface formed on one side of a first peak portion, which is one of a plurality of continuous first bump peak portions constituting the corrugated shape, and a first bump other-side inclined surface formed on the other side of the first peak portion,
• the second bump foil includes a second bump one-side inclined surface formed on one side of a second peak portion, which is one of a plurality of continuous second bump peak portions constituting the corrugated shape, and a second bump other-side inclined surface formed on the other side of the second peak portion,
• a back surface of the first bump one-side inclined surface and a front surface of the second bump one-side inclined surface are configured to be in contact with each other at a first circumferential position,
• a back surface of the first bump other-side inclined surface and a front surface of the second bump other-side inclined surface are configured to be in contact with each other at a second circumferential position, and
• the gap between the tops is formed in an entirety from the first circumferential position toward the other side to the second circumferential position.