摘要:
A vehicle air conditioning apparatus 10 includes: a refrigerant circuit 11 in which a compressor 21, a heat source side heat exchanger 23, an expansion device 24, and a load side heat exchanger 25 are connected by pipes; and a controller that performs switching between a heating operation in which refrigerant in the refrigerant circuit 11 circulates and a defrosting operation of the heat source side heat exchanger 23 in which the refrigerant in the refrigerant circuit 11 circulates in a direction opposite to a direction in the heating operation. The controller produces an airflow flowing from the load side heat exchanger 25 into a cabin through a first air outlet 5 in the heating operation, and an airflow flowing from the cabin into the load side heat exchanger 25 through the first air outlet 5 is produced in the defrosting operation of the heat source side heat exchanger 23.
摘要:
La présente invention concerne un procédé de chauffage et/ou climatisation d'un habitacle de véhicule automobile à l'aide d'une boucle frigorifique réversible dans laquelle circule un fluide frigorigène comprenant le 2,3,3,3-tetrafluoropropène. Ce procédé convient tout particulièrement lorsque la température extérieure est inférieure à -15° C. Il convient également aux véhicules automobiles hybrides qui sont conçus pour fonctionner en alternance sur moteur thermique et moteur électrique.
摘要:
A method for defrosting a heat exchanger of a refrigeration circuit is provided. The method includes monitoring a compressor suction parameter at a suction line to a compressor of the refrigeration circuit. The method also includes determining a compressor suction parameter threshold. Also, the method includes initiating a defrost mode of the refrigeration circuit when the compressor suction parameter is less than or equal to the compressor suction parameter threshold.
摘要:
Air conditioning system, in particular for electric vehicle applications, defined by a closed circuit where coolant fluid circulates, the circuit comprising a first heat exchanger (evaporator) intended to be installed in the external environment, a second heat exchanger (condenser) intended to be installed in room or vehicle coach, a compressor arranged between said first and second heat exchangers and a lamination valve (LV) arranged symmetrically to the compressor between said second and first heat exchangers, wherein the circuit comprises a controllable valve (CV) arranged between said first heat exchanger (evaporator) and said compressor in order to maintain a fluid pressure within said first heat exchanger above a predetermined minimum threshold pressure, when said first heat exchanger works as an evaporator (heat pump mode).