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(11) | EP 1 826 510 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Refrigeration cycle device |
(57) In a refrigeration cycle device (2) in which heat generated by heat absorption of
an evaporator (16) is used for heating in a condenser (11), a disadvantage that a
cooling capacity of the evaporator (16) deteriorates owing to shortage or drop of
an amount of the heat to be rejected from the condenser (11) is securely avoided and
a cooling function is maintained. In the refrigeration cycle device which is provided
with a refrigerant circuit including a compressor (10), a condenser (11), an expansion
valve (14) and an evaporator (16) and which exhibits a heating function by the heat
rejected from the condenser (11) and which exhibits the cooling function by the heat
absorption of the evaporator (16), an operation to secure a predetermined amount of
the heat to be rejected from the condenser (11) is executed in order to maintain the
cooling function of the evaporator (16) based on an index capable of grasping the
amount of the heat to be rejected from the condenser (11).
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