Hermetic compressor and refrigeration cycle apparatus

A hermetic compressor comprising:

• a cylinder in which a compression chamber in which refrigerant is compressed and an injection vertical hole that forms a portion of an injection passage through which refrigerant is supplied into the compression chamber and extends in a height direction are formed;
• closure components that are fixed to both respective end surfaces of the cylinder in a height direction and close the compression chamber;
• and
• an injection check valve that opens and closes the injection vertical hole,
• the injection vertical hole having one end formed at one end surface of the cylinder,
• in the one end surface of the cylinder, a plurality of first fixation holes being formed through which a plurality of first fixation components that fix a corresponding one of the closure components to the one end surface are inserted,
• in a case where, among the plurality of first fixation holes, one that has a shortest distance from a center of the one of the plurality of first fixation holes to a center of the cylinder is defined as a shortest first fixation hole,
• the injection vertical hole having at least a portion located in a region inside an imaginary circle that has a circle center defined by the center of the cylinder and has a radius from the center of the cylinder to a center of the shortest first fixation hole,
• the hermetic compressor further comprising
• a second fixation component that fixes the injection check valve to one end surface of the cylinder,
• the second fixation component being located in a region outside the imaginary circle.