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AssigneeDelphi Technologies, Inc.
InventorsJulien Quilliard, Jean-Francois Launois, Jean-Claude Petesch
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A method for controlling a heating, ventilation and air-conditioning (HVAC) system having an air vent associated with a window for blowing an air flow of controlled temperature thereon; the HVAC system having a refrigeration unit with a compressor and an evaporator, and blowing means for forcing air over the evaporator to the air vent. The method includes a first step (a) of activating the compressor while deactivating the blowing means during a first period for condensing moisture of the air contained in the HVAC system. The method includes a further step (b) comprising, at the expiry of the first period, activating the blowing means and keeping the compressor active during a second period for sufficiently reducing the dew-point temperature of air blown by the HVAC system, and deactivating the compressor at the expiry of the second period.
A method for controlling a heating, ventilation and air-conditioning (HVAC) system having an air vent associated with a window for blowing an air flow of controlled temperature thereon;
The method according to any one of the preceding claims, characterised in that at step (b) said blowing means is operated at a predetermined low level.
The method according to any one of the preceding claims, characterised in that
The method according to any one of the preceding claims, characterised in that step (a) is initiated when the outside temperature falls within a predetermined temperature range, preferably between 2 and 20° C.
The method according to any one of the preceding claims, characterised in that step (a) is initiated when the HVAC system has been at stand-still for predetermined duration.
The method according to any one of the preceding claims, wherein said HVAC system can recirculate blown air and/or take in fresh air, characterised in that during step (a), the HVAC system is set to air-recirculation only.
The method according to any one of the preceding claims, characterised in that after step (b), a heated air flow is delivered by said air vent to heat up said window.
The method according to any one of the preceding claims, wherein said HVAC system is associated with a vehicle compartment for controlling the climate therein, and said vent is a defrost vent associated with a windscreen of said vehicle.
Dependencies are inferred from the claim text.