Patent ID: 7347063

Claim:
An apparatus for heat exchange for use in motor vehicle air conditioning systems which, as refrigerant, include a fluid with carbon dioxide (CO 2 ) as at least one constituent, the apparatus comprising: at least one feed line and discharge line, which open out into a distribution or collection space, respectively, for a fluid, and at least one through-flow device, the through-flow device comprising: at least one first end-side flow connection section, through which the fluid enters the through-flow device or leaves the through-flow device, at least one second end-side flow connection section, through which the fluid leaves the through-flow device or enters the through-flow device, and wherein the first flow connection section is flow-connected to the second flow connection section by at least one tube section, wherein at least one of the flow connection sections is twisted at least once, wherein the first or second flow connection section is flow-connected to the collection space, wherein the second or first flow connection section is flow-connected to the distribution space, wherein at least one space section of the distribution space is flow-connected to at least one space section of the collection space by at least one connection device, wherein a separating device is arranged in such a manner that medium flows firstly through a first section, remote from the air flowing through, then through a section facing the air flowing through, then back through a section remote from the air flowing through and finally back through a section facing the air flowing through, and wherein there is at least one separating device dividing the collection space and/or the distribution space into at least two space sections in a gas-tight and fluid-tight manner and the at least one separating device comprises two separating walls with one of the separating walls being arranged at a right angle and with an opening.