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AssigneeValeo Climatisation
InventorsGilles Elliot, Pascale Petitjean, Carine Paumier, Guillaume Foury
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The invention concerns a method for reducing preheating time and for homogenizing temperatures in a passenger compartment, for example of a motor vehicle, wherein the preheating dynamics is improved, which consists in adjusting soft air diffusion air speed in an optimised range of values. In one embodiment, the air circulating device comprises at least a ventilator (8) and at least a soft air diffusion conduit (2), having at its open end an air permeable panel (4) which ensures a soft air diffusion in the passenger compartment. The invention is characterised in that the ventilator, the conduit (2) and the panel (4) are dimensioned so that, at maximum ventilated air flow rate the diffused air speed ranges between 2 and 5 m/s. The device further comprises at least a ventilation conduit (3), said conduit being dimensioned so that, at maximum air flow blown by the ventilator, the air speed at the ventilating nozzles substantially ranges between 2 m/s and 10 m/s. The invention is applicable in particular to a motor vehicle passenger compartment.
Method of aeration by gentle diffusion for ventilation, heating and/or air-conditioning of a passenger compartment (H) characterized in that, at the maximum ventilated-air throughput, the proportioning of the diffusion is regulated to even out the diffused air to a speed lying between substantially 1 and 5 m/s, and preferably between substantially 2 m/s and 4 m/s:
Aeration method according to the preceding claim, in which the throughput of air for the direct ventilation is regulated at the central level of the aeration.
Aeration device according to the preceding claim, characterized in that it furthermore includes at least one aeration duct (3), this duct being dimensioned so that, at the maximum air throughput blown by the fan, the speed of the air at the location of the aeration nozzles (10) lies substantially between 2 m/s and 10 m/s, and preferably substantially between 4 m/s and 8 m/s.
Aeration device according to the preceding claim, in which is provided at least one flap (5) for distribution of the air throughputs of the flows (F2, F3, F4) of the ducts (2, 3, 6) for gentle diffusion, aeration and de-icing.
Aeration device according to the preceding claim, in which the distribution in percentages of the flows varies linearly as a function of the angle of opening of the flap (5) following the complementary ranges of distribution values of the flows.
Dependencies are inferred from the claim text.