Refrigeration cycle device

A refrigeration cycle apparatus comprising:

• a first refrigerant circuit including a first refrigerant, a first compressor, a first heat exchanger, a first refrigerant flow path of a second heat exchanger, a first expansion device, a third heat exchanger, and a first refrigerant flow path of a fourth heat exchanger;
• and
• a second refrigerant circuit including a second refrigerant, a second compressor, a fifth heat exchanger, a second expansion device, a second refrigerant flow path of the second heat exchanger, and a second refrigerant flow path of the fourth heat exchanger,
• the flow path of the first refrigerant is through the first refrigerant circuit in order of the first compressor, the first heat exchanger, the first refrigerant flow path of the second heat exchanger, the first expansion device, the third heat exchanger, and the first refrigerant flow path of the fourth heat exchanger, the third heat exchanger being connected directly to the first refrigerant flow path of the fourth heat exchanger,
• the flow path of the second refrigerant is through the second refrigerant circuit in order of the second compressor, the fifth heat exchanger, the second expansion device, the second refrigerant flow path of the second heat exchanger, and the second refrigerant flow path of the fourth heat exchanger,
• wherein
• the first refrigerant flow path of the second heat exchanger is located directly between a first inlet of the second heat exchanger and a first outlet of the second heat exchanger,
• the second refrigerant flow path of the second heat exchanger is located directly between a second inlet of the second heat exchanger and a second outlet of the second heat exchanger,
• the first refrigerant flow path of the fourth heat exchanger is located directly between a first inlet of the fourth heat exchanger and a first outlet of the fourth heat exchanger,
• the second refrigerant flow path of the fourth heat exchanger is located directly between a second inlet of the fourth heat exchanger and a second outlet of the fourth heat exchanger,
• the first refrigerant that flows into the first refrigerant flow path of the second heat exchanger is cooled with the second refrigerant that flows into the second refrigerant flow path of the second heat exchanger,
• the first refrigerant that flows from the third heat exchanger directly into the first refrigerant flow path of the fourth heat exchanger is cooled with the second refrigerant that flows into the second refrigerant flow path of the fourth heat exchanger, and
• the third heat exchanger is connected directly to the first expansion device,
• wherein
• the fourth heat exchanger is configured to pass the first refrigerant in the first refrigerant flow path of the fourth heat exchanger in a direction opposite to a direction in which the second refrigerant passes through the second refrigerant flow path of the fourth heat exchanger.