Patent ID: 6430945
Filing Date: 2002-08-13
Classification: B60H,F25B,F28D,F28F

Abstract:
A process for condensing into a saturated state and subsequently supercooling the interior coolant of a motor vehicle air conditioning system, in which the ambient air of the motor vehicle serves as the external coolant, by dividing the path of flow of the interior coolant within the zone of influence of the external coolant in at least two parallel paths of flow which are subsequently united again,whereby the interior coolant is partially condensed in the direction of flow prior to the two parallel paths of flow within the zone of influence of the external coolant from the gas phase into the liquid phase, and whereby along the first parallel path of flow, the interior coolant is then farther condensed into the saturated state and residual gas phase of the interior coolant is separated, whereas along the second parallel path of flow, the interior coolant is supercooled and in the supercooled state united with the saturated interior coolant of the first parallel path, the latter having been freed of the gas phase, wherein following the partial condensation, the first and the second parallel paths of the interior coolant of flow are supplied with liquid to gaseous phase in the same or at least similar ratio, slightly modified by inertial demixing; and that along the second parallel path, the rate of flow of the interior coolant is reduced in relation to the rate of flow of the coolant along the first parallel path by a greater loss of pressure, and said loss of pressure on the second parallel path is dimensioned in this connection in such a way that the difference of the static pressure at the outlet of the first path of flow minus the static pressure at the outlet of the second path of flow is greater than or equal to the pressure of the liquid column of the interior coolant between the gas/liquid interface of the interior coolant in the direction of flow downstream of the first parallel path and a level above the outlet of the second parallel path.