Compressor and refrigeration device

A compressor configured to be mounted on a product, the compressor comprising:

• a drive shaft having an eccentric shaft portion eccentric with respect to a rotation axis;
• an electric motor having a rotor fixed to the drive shaft and configured to rotationally drive the drive shaft;
• a compression mechanism having
• a piston configured to engage with the eccentric shaft portion and make an eccentric rotational movement,
• a cylinder configured to house the piston and form a fluid chamber, and
• a blade configured to divide the fluid chamber into a low-pressure chamber and a high-pressure chamber;
• a balancer forming a rotary system together with the drive shaft and the rotor;
• a casing configured to house the drive shaft, the electric motor, the compression mechanism, and the balancer;
• a suction pipe provided to suck a fluid into the compression mechanism;
• and
• a discharge pipe provided to discharge a fluid compressed by the compression mechanism,
• the balancer being configured such that at a connection portion of the compressor with the product,
• a composite vibration being a first vibration or less,
• the composite vibration being a synthesis of the first vibration due to torque according to a pressure difference between the low-pressure chamber and the high-pressure chamber,
• a second vibration due to an inertial force acting on the piston by the eccentric rotational movement, and
• a third vibration due to a centrifugal force acting on the rotary system.