| 摘要 |
The invention relates to a heat exchanger used, in particular for motor vehicle air-conditioning systems with a liquid coolant. In a preferred variant, the used coolant is embodied in the form of carbon dioxide. The inventive heat exchanger comprises at least one supply duct, an exhaust line, two heat-exchanging units which are provided with at least one distribution space and one accumulating space and at least one circulating system. Each heat-exchanging unit is provided with at least one dividing system for dividing at least one distribution space or one accumulating space into two partial spaces. Said heat exchanger also comprises a flow actuating system connecting the heat-exchanging units to each other. The flow cross sections or the totality thereof arranged before and after said flow actuating device have a predetermined ratio therebetween.
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