Sliding member for a compressor
AssigneeDaikin Industries, Ltd.
InventorsKousuke Nishimura, Kazuhiro Furusho, Takeyoshi Ohkawa
Life of this patent
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Abstract
A compressor includes a cylinder including a cylinder chamber, a piston movably arranged relative to the cylinder in the cylinder chamber, and a sliding member slideable against the cylinder and the piston in the cylinder chamber. The cylinder and the piston are constructed from an Al—Si alloy having a Si content exceeding 12.6 wt %, which is a eutectic point. The sliding member is constructed from steel and has a surface layer including a sliding surface slideable against the cylinder and the piston. The surface layer is treated so as to have greater hardness than hardness of proeutectic Si contained in the Al—Si alloy, and the surface layer has hardness of at least Hv 1000 in the sliding surface.
Claims20
A compressor comprising:
- a cylinder including a cylinder chamber;
- a piston movably arranged relative to the cylinder in the cylinder chamber;
- and
- a sliding member slideable against the cylinder and the piston in the cylinder chamber,
- the cylinder and the piston being constructed from an Al—Si alloy having a Si content exceeding 12.6 wt %, which is a eutectic point,
- the sliding member being constructed from steel and having a surface layer including a sliding surface slideable against the cylinder and the piston, and
- the surface layer having greater hardness than a hardness of proeutectic Si contained in the Al—Si alloy, and the surface layer having hardness of least Hv 1000 in the sliding surface.
Dependencies are inferred from the claim text.