Refrigeration cycle apparatus
AssigneeDaikin Industries, Ltd.
InventorsHiroaki MATSUDA, Yuta IYOSHI, Yoshiki YAMANOI, Shota AZUMA
Life of this patent
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Abstract
A refrigeration cycle apparatus includes a first circuit, a second circuit, and a control circuitry. The first circuit includes a first compressor, a first heat exchanger, a first expansion mechanism, and a cascade heat exchanger. The first circuit allows circulation of a first refrigerant. The second circuit includes a second compressor, a second heat exchanger, the cascade heat exchanger, a second expansion mechanism, and a third heat exchanger. The second circuit allows circulation of a second refrigerant. The control circuitry executes stop control of collecting the first refrigerant to the first heat exchanger before stopping operation of the first circuit.
Claims20
A refrigeration cycle apparatus comprising:
- a first circuit including a first compressor, a first heat exchanger, a first expansion mechanism, and a cascade heat exchanger, the first circuit being configured to allow circulation of a first refrigerant;
- a second circuit including a second compressor, a second heat exchanger, the cascade heat exchanger, a second expansion mechanism, and a third heat exchanger, the second circuit being configured to allow circulation of a second refrigerant;
- and
- control circuitry configured to execute stop control of collecting the first refrigerant to the first heat exchanger before stopping operation of the first circuit.
Dependencies are inferred from the claim text.