US 2013/0219932 A1Published application

Coolant condenser assembly

AssigneeBehr GmbH & Co.

InventorsGuillaume David, Uwe Förster, Matthias Jung, Andreas Kemle, Christoph Walter, Herbert Hofmann

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Abstract

This application relates to a coolant condenser assembly for an air conditioning system for a motor vehicle. In a supercooling region, at least two cooling pipes, as the first supercooling parallel section, are acted upon in parallel by the coolant in a fluid-conducting manner, the coolant which flows out of the first supercooling parallel section flows into a first supercooling intermediate flow duct, and the first supercooling intermediate flow duct opens into at least two cooling pipes as the second supercooling parallel section, and the second supercooling parallel section opens into a second supercooling intermediate flow duct and the second supercooling intermediate flow duct opens into at least two cooling pipes as the third supercooling parallel section, such that the outlet opening is disposed on a second longitudinal side of the coolant condenser assembly.

Claims11

Dependent claims

A refrigerant condenser assembly for a motor vehicle air-conditioning system, comprising

an inlet opening for the introduction of a refrigerant,
an outlet opening for the discharge of a refrigerant,
cooling tubes for conducting a refrigerant,
two collecting tubes for fluidically connecting the cooling tubes,
a collecting tank having at least one flow transfer opening via which the collecting tank is fluidically connected to the cooling tubes and/or to the collecting tube, wherein the collecting tank is arranged at a first longitudinal side of the refrigerant condenser assembly,
the cooling tubes have a superheat region for cooling the vaporous refrigerant, a condensation region for condensing the refrigerant, and a supercooling region for cooling the liquid refrigerant, wherein,
in the supercooling region, at least two cooling tubes as a first supercooling parallel portion are charged with the refrigerant in parallel in terms of fluid conduction, the refrigerant flowing out of the first supercooling parallel portion issues into a first supercooling intermediate flow duct, and the first supercooling intermediate flow duct issues into at least two cooling tubes as a second supercooling parallel portion,
wherein,
in the supercooling region, the second supercooling parallel portion issues into a second supercooling intermediate flow duct and the second supercooling intermediate flow duct issues into at least two cooling tubes as a third supercooling parallel portion, such that the outlet opening is arranged on a second longitudinal side of the refrigerant condenser assembly.

6 more elements

A method for operating a refrigeration circuit of a motor vehicle air-conditioning system, having the steps:

conducting refrigerant through lines of a refrigerant circuit,
compressing the gaseous refrigerant in a compressor, such that the pressure of the gaseous refrigerant is increased,
cooling and condensing the gaseous refrigerant in a refrigerant condenser assembly, which refrigerant is conducted through cooling tubes, by virtue of the gaseous refrigerant being cooled to a saturation temperature in a superheat region, the gaseous refrigerant subsequently being cooled to a boiling temperature and liquefied in a condensation region, and the liquid refrigerant being cooled below the boiling temperature in a supercooling region,
expanding the liquid refrigerant at an expansion element such that the pressure of the liquid refrigerant is reduced,
heating and evaporating the refrigerant in an evaporator,
conducting the gaseous refrigerant emerging from the evaporator to the compressor, wherein,
in the supercooling region, the refrigerant is conducted in parallel through at least two cooling tubes of a first supercooling parallel portion the refrigerant flowing out of the first supercooling parallel portion is conducted into a first supercooling intermediate flow duct, and the refrigerant conducted through the first supercooling intermediate flow duct is subsequently conducted in parallel through at least two cooling tubes of a second supercooling parallel portion, and the second supercooling parallel portion issues into a second supercooling intermediate flow duct, and the second supercooling intermediate flow duct issues into at least two cooling tubes as a third supercooling parallel portion, and/or, in the supercooling region, the refrigerant is conducted through cooling tubes with a smaller flow cross-sectional area than the refrigerant that is conducted through the cooling tubes of the superheat region and/or of the condensation region, such that the refrigerant conducted through the cooling tubes in the supercooling region has a greater volume flow rate than the refrigerant conducted through the cooling tubes in the superheat region and/or in the condensation region.

4 more elements

Dependencies are inferred from the claim text.