| 摘要 |
An air-conditioning unit including an air circuit with an air inlet, a main fan and an air outlet designed to be connected to a chamber, preferably via one or more flexible ducts, and a refrigerant circuit including a heat exchanger/evaporator positioned in the air circuit to cool the air by evaporating the refrigerant, a compressor and a condenser for condensing the refrigerant before it is returned to the heat exchanger/evaporator. The heat exchanger/evaporator includes several parallel circuits each having at least one regulator valve. The air circuit also includes a temperature probe downstream of the heat exchanger/evaporator and connected to a controller which controls the regulator valves to regulate the flow of refrigerant, and a pressure probe at the air outlet and connected to a regulator for regulating the speed and/or the power of the main fan so as not to exceed a maximum raised pressure at air outlet. |
| 主权项 |
1. An air conditioning system, comprising:
An aircraft; and A mobile air conditioning unit disposed on the ground outside the aircraft, the mobile air conditioning unit being for supplying air conditioning to an interior of the aircraft while the aircraft is parked on the ground, the mobile air conditioning unit comprising: an air circuit having an air inlet, a main fan, and an air outlet, said air outlet being configured to be connected to the interior of the aircraft parked on the ground through one or more flexible ducts; a refrigerant circuit located in the air circuit and comprising an individual heat exchanger, a compressor and a condenser, said individual heat exchanger cooling the air by evaporating the refrigerant, said compressor compressing the refrigerant and said condenser condensing the refrigerant before it is returned to the individual heat exchanger, said individual heat exchanger comprising at least two parallel circuits, each of the at least two parallel circuits being individually controlled and being provided with an individual pressure reducing valve, said air circuit further comprising:
a temperature sensor downstream of the heat exchanger and connected to means for controlling said individual pressure reducing valves in order to regulate the flow rate of refrigerant to maintain the air temperature downstream of the heat exchanger within a set range; anda pressure sensor at the air outlet connected to means for regulating at least one of the speed and power of the main fan in order not to exceed a maximum overpressure at the air outlet, and said refrigerant circuit further comprising a compressor suction pressure sensor connected to means for regulating the mass flow rate of refrigerant aspirated by the compressor in order to maintain the aspiration pressure of the compressor within a set range. |
