Compressor and air conditioner

A compressor, comprising:

• a crankshaft, wherein the crankshaft comprises a first eccentric portion and a second eccentric portion, and the first eccentric portion and the second eccentric portion are located on different shaft sections of the crankshaft respectively;
• a first roller sleeved on an outer circumference of the first eccentric portion, the interior of the first roller being a solid structure;
• a second roller sleeved on an outer circumference of the second eccentric portion, the interior of the second roller having a hollow portion to form a cavity;
• a motor rotor sleeved on the crankshaft;
• and
• one balancing block disposed at an axial end of the motor rotor;
• wherein a mass center of the first eccentric portion and the first roller is a first mass center, and an first mass-center axis passes through the first mass center and is parallel to an axis of the crankshaft;
• a mass center of the second eccentric portion and the second roller is a second mass center, and a second mass-center axis passes through the second mass center and is parallel to the axis of the crankshaft;
• and a mass center of the balancing block, the first mass-center axis and the second mass-center axis are located in the same plane;
• and
• in the plane, the first mass center is located on a first side of the axis of the crankshaft, and the mass center of the balancing block is located on a second side of the axis of the crankshaft, and the axis of the crankshaft is located between the mass center of the balancing block and the first mass center;
• and the second mass center is located on the second side of the axis of the crankshaft;
• wherein two hollow portions are provided, and the two hollow portions are spaced apart along an axial direction of the second roller;
• a supporting portion is disposed between the two hollow portions;
• radial thicknesses of radial inner walls of the two hollow portions each are b1, and radial thicknesses of radial outer walls of the two hollow portions each are a1;
• an axial thickness of a third axial end of one hollow portion away from the other hollow portion is c1, and an axial thickness of a fourth axial end of the other hollow portion away from the one hollow portion is d1;
• a total radial thickness of the second roller is t, and a total axial thickness of the second roller is h, and it is satisfied that:
• a
• ⁢
• 1
• ≥
• 1
• 6
• ⁢
• t
• ,
• b
• ⁢
• 1
• ≥
• 1
• 6
• ⁢
• t
• ,
• c
• ⁢
• 1
• ≥
• 1
• 12
• ⁢
• h
• ,
• and
• ⁢
• d
• ⁢
• 1
• ≥
• 1
• 12
• ⁢
• h
• .

A compressor, comprising:

• a crankshaft, wherein the crankshaft comprises a first eccentric portion and a second eccentric portion, and the first eccentric portion and the second eccentric portion are located on different shaft sections of the crankshaft respectively;
• a first roller sleeved on an outer circumference of the first eccentric portion, the interior of the first roller being a solid structure;
• a second roller sleeved on an outer circumference of the second eccentric portion, the interior of the second roller having a hollow portion to form a cavity;
• a motor rotor sleeved on the crankshaft;
• and
• one balancing block disposed at an axial end of the motor rotor;
• wherein a mass center of the first eccentric portion and the first roller is a first mass center, and an first mass-center axis passes through the first mass center and is parallel to an axis of the crankshaft;
• a mass center of the second eccentric portion and the second roller is a second mass center, and a second mass-center axis passes through the second mass center and is parallel to the axis of the crankshaft;
• and a mass center of the balancing block, the first mass-center axis and the second mass-center axis are located in the same plane;
• and
• in the plane, the first mass center is located on a first side of the axis of the crankshaft, and the mass center of the balancing block is located on a second side of the axis of the crankshaft, and the axis of the crankshaft is located between the mass center of the balancing block and the first mass center;
• and the second mass center is located on the second side of the axis of the crankshaft;
• wherein the number of the hollow portions is n, and the n hollow portions are spaced and arranged sequentially along an axial direction of the second roller, wherein n≥1;
• a total radial thickness of the second roller is t, and a total axial thickness of the second roller is h;
• radial thicknesses of radial outer walls of the n hollow portions each are a, and radial thicknesses of radial inner walls of the n hollow portions each are b, and it is satisfied that a≥t/(2(n+1)), and b≥t/(2(n+1));
• among the n hollow portions, an axial thickness of one axial end of each hollow portion is c, and an axial thickness of the other axial end of each hollow portion is d, and it is satisfied that c≥h/(4(n+1)), and d≥h/(4(n+1));
• and
• a supporting portion is arranged between any two adjacent hollow portions among the n hollow portions, and axial thicknesses e of multiple supporting portions are equal, and e≥h/(8(n+1)).