JP2007198319A5 - - Google Patents

Claims (4)

An electric motor unit and a rotary compression mechanism unit coupled to the motor unit via a rotating shaft are accommodated in a sealed case, and the rotary compression mechanism unit includes a cylinder forming a cylinder chamber, and both end surfaces of the cylinder. A hermetic rotary compressor provided with first and second lid members that cover the cylinder chamber, and rollers and blades that separate the cylinder chamber into a compression chamber and a suction chamber;
A discharge hole for discharging the refrigerant compressed in the cylinder chamber is provided in at least one of the first and second lid members,
The discharge hole, the cross-sectional area of the compression chamber B (m ²⁾ when the upper Symbol blade is positioned at the bottom dead ^center, when the cross-sectional area of the discharge hole was ^{C (m 2), C /} B ≦ The discharge hole length is set to 3 mm or less, and the ratio of the area where the discharge hole faces the cylinder chamber is set to 87% or more of the cross-sectional area of the discharge hole. Is a hermetic rotary compressor characterized by not having a notch for discharging refrigerant.   2. The hermetic rotation according to claim 1, wherein D / E ≧ 1.9, where D (m) is the diameter of the cylinder chamber and E (m) is the height of the cylinder chamber. Type compressor.   2. The hermetic rotary compressor according to claim 1, wherein d + 0.1 ≦ L + F, where d is a diameter of the discharge hole and L is a seal width of the roller. .     A refrigeration cycle apparatus comprising: a hermetic rotary compressor according to any one of claims 1 to 3; a condenser, an expansion device, and an evaporator connected in sequence through a refrigerant pipe.