| 摘要 |
The invention concerns an air conditioning unit wherein the refrigerating fluid loop (1) comprises in standard fashion a compressor (2), a condenser (3), a liquid/gas separating reservoir (5), an expansion device (6) and an evaporator (7). The invention is characterised in that a pre-expansion device (4), inserted between the condenser (3) and the reservoir (5), is capable of producing a pressure drop ranging between 1.5 and 14 bars to reduce the fluid pressure down to its vapour saturating pressure. The reservoir can also contain a variable amount of liquid to compensate the fluid losses in the loop by maintaining the sub-cooling temperature constant in the condenser and consequently the heating capacity capable of being absorbed by the evaporator. |
