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(11) | EP 1 983 277 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Refrigeration cycle apparatus |
| (57) A refrigeration cycle apparatus for effectively performing defrosting, in which a
compressor (1), a four-way valve (11), a condenser (2), a throttling device (3), and
an evaporator (4) are connected via pipes, including: discharge gas bypasses (31,
32, 33) for flowing a discharge refrigerant to at least one of a suction pipe (1b)
of the compressor and an evaporator pipe (4a) for connecting the throttling device
and the evaporator, from a discharge pipe (1a) for connecting the compressor and the
four-way valve; and a refrigerant controller (40) capable of optionally flowing the
discharge refrigerant to the discharge gas bypasses, wherein the discharge refrigerant
of the compressor is partially passed through the discharge gas bypasses during defrosting
in a heating operation, and a flow rate to the discharge gas bypasses is larger than
a flow rate to the four-way valve.
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