Compressor for air conditioner and air conditioner

The invention relates to the technical field of air conditioners, and discloses a compressor for an air conditioner. The compressor comprises a motor and an air cylinder, and the air cylinder is in transmission connection with the motor and is coaxial with the motor. Wherein the outer diameter of the motor is D, the discharge capacity of the air cylinder is C, the matching coefficient between the outer diameter of the motor and the discharge capacity of the air cylinder is K, K = D/C, and the value range of the matching coefficient K is 3 < = K < = 9. The ratio range of the matching coefficient K between the outer diameter of the compressor motor and the displacement of the air cylinder is limited to be 3-9, the size of the compressor motor is reduced, and therefore the size of the compressor cylinder body can be correspondingly reduced, fewer manufacturing materials are used, the manufacturing cost is reduced by reducing the materials, and the manufacturing cost is reduced. The matching relation between the