HVAC SYSTEM OF THE VEHICLE PASSENGERS COMPARTMENT WITH AIR FLOW TOPOLOGY CHANGE

摘要

HVAC system of the vehicle passengers compartment with air flow topology change, which refers to the system of conditioning with several operating modes of the passengers department, i.e. to the system that enables the cooling, heating and dehumidification of the space inside the passengers department of the vehicle, according to the invention, contains the cycle of the cooling fluid encompassing compressor (1), heat exchanger (2), the first exchangeable damping valve (5), the middle pressure heat exchanger (3), second exchangeable damping valve (6) and evaporator (4); further comprising the subsystem (300) for the exchange of topology of air streams containing inside the middle pressure heat exchanger (3) and the evaporator (4), device (301) for additional heating inside of which there is an heat exchanger (2) for heating, external air stream which conducting air through the subsystem (300) for changing topology of the air streams in the environment, and the internal air stream which conducting the air through the subsystem (300) for the change of topology of air streams and the device (301) for the additional heating in the passengers compartment, while the subsystem (300) for the change of topology of the air streams has at least two working modes, so that in the first working mode the external air stream includes the middle pressure heat exchanger (3), and the internal air stream includes the evaporator (4), while in the second working mode, the external air stream includes the evaporator (4) and the internal air stream includes the middle pressure heat exchanger (3); where the mentioned system (300) performs at least one of the functions of heating, cooling and the dehumidification of the air of the passengers compartment.