Refrigerating cycle

A refrigerating cycle comprising:

• a compressor (1) for sucking and compressing a refrigerant;
• a radiator (2) for cooling the refrigerant discharged from the compressor (1);
• at least one pressure reducing means (4, 10) for reducing pressure of the refrigerant at the outlet side of the radiator (2);
• a plurality of evaporators (5, 11) for evaporating the low pressure refrigerant which has passed through the pressure reducing means (4, 10);
• an accumulator (9) provided on the outlet side of one evaporator (5) in the plurality of evaporators (5, 11);
• and
• an internal heat exchanger (3) for exchanging heat between the low pressure refrigerant, which flows between the outlet side of the accumulator (9) and the suction side of the compressor (1), and the high pressure refrigerant at the outlet side of the radiator (2), wherein
• the outlet side of the other evaporator (11) in the plurality of evaporators (5, 11) is joined to a portion between the outlet side of the accumulator (9) and the inlet side of the internal heat exchanger (3),
• at least one pressure reducing means reduces the pressure of the refrigerant, which is supplied at least to the other evaporator (11), by a variable throttle (10), and
• the variable throttle (10) is changed so that the degree of opening can be reduced when the high pressure is lowered.

A refrigerating cycle comprising:

• a compressor (1) for sucking and compressing a refrigerant;
• a radiator (2) for cooling the refrigerant discharged from the compressor (1);
• one pressure reducing means (4, 10) for reducing pressure of the refrigerant at the outlet side of the radiator (2);
• a plurality of evaporators (5, 11) for evaporating the low pressure refrigerant which has passed through the pressure reducing means (4, 10);
• an accumulator (9) provided on the outlet side of one evaporator (5) in the plurality of evaporators (5, 11);
• and
• an internal heat exchanger (3) for exchanging heat between the low pressure refrigerant, which flows between the outlet side of the accumulator (9) and the suction side of the compressor (1), and the high pressure refrigerant at the outlet side of the radiator (2), wherein
• the outlet side of the other evaporator (11) in the plurality of evaporators (5, 11) is joined to a portion between the outlet side of the accumulator (9) and the inlet side of the internal heat exchanger (3), and
• one pressure reducing means controls the high pressure according to the high pressure refrigerant temperature at the outlet side of the radiator (2).

A refrigerating cycle comprising:

• a compressor (1) for sucking and compressing a refrigerant;
• a radiator (2) for cooling the refrigerant discharged from the compressor (1);
• at least one pressure reducing means (4, 10) for reducing the pressure of the refrigerant at the outlet side of the radiator (2);
• a plurality of evaporators (5, 11) for evaporating the low pressure refrigerant which has passed through the pressure reducing means (4, 10);
• an accumulator (9) provided between the outlet side of the plurality of evaporators (5, 11) and the suction side of the compressor (1), and
• a refrigerant passage through which the refrigerant flowing out from at least one of the plurality of evaporators (5, 11) is introduced onto the inlet side of the other evaporator.