Rotary compressor

A rotary compressor, comprising:

• a sealed longitudinal compressor housing which is provided with a discharge portion of a refrigerant at an upper portion thereof, is provided with an inlet portion of the refrigerant at a lower portion thereof, and in which lubricant oil is stored;
• a compressing unit which is disposed in the compressor housing, compresses the refrigerant sucked from the inlet portion and discharges the refrigerant from the discharge portion;
• a motor which is disposed in the compressor housing and drives the compressing unit;
• a rotation shaft which is rotated by the motor;
• and
• an accumulator which is attached to a side portion of the compressor housing and is connected to the inlet portion of the refrigerant,
• wherein the rotation shaft includes an eccentric portion in which a piston of the compressing unit is fitted,
• R32 is used as the refrigerant,
• when an inner diameter of a cylinder constituting the compressing unit is referred to as Dc [mm], a height of the cylinder is referred to as He [mm], and an eccentric amount of the eccentric portion of the rotation shaft is referred to as Dc [mm], He [mm], and e [mm] are set so that a value obtained by an expression (e+Hc)−(Dc−e)1/3/(e−Hc)2/3 is less than 4.1, and
• when a cylinder chamber capacity of the cylinder is referred to as V [cc/rev] and an inner diameter of an inlet hole of the cylinder is referred to as Dk [mm], V [cc/rev] and Dk [mm] are set so that a value [(cc/rev)2/mm4] obtained by an expression of 70V2/Dk4 is 1.5 or less.