| 摘要 |
An air conditioning device including a main fluid flow loop (1, 2) consisting of a first branch (1) comprising an evaporator (5) followed by a compressor (4), and a second branch (2) comprising a condenser (6), said main loop further comprising a first pressure reducer (10, 15) between the condenser and the evaporator, and an assembly for supplying the passenger compartment with air after a heat exchange with the evaporator. Said device includes a third branch (3) not provided with a condenser and arranged in parallel to the second branch so that it forms a secondary loop (1, 3) together with the first branch, and at least two first valves (8, 8a) and a second valve (9) located in the second and third branches respectively, both of the first valves being closed when the second is open so that the fluid flow can be controlled either in the main loop or in the secondary loop.
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