Cooling system and a cooling arrangement for a motor vehicle

A cooling arrangement for a cooling system for a motor vehicle, comprising:

• a first heat exchanger incorporated in a first circuit and through which a coolant is flowable from a first inlet to a first outlet;
• a second heat exchanger incorporated in a second circuit and through which the coolant is flowable from a second inlet to a second outlet;
• the first heat exchanger and the second heat exchanger structured and arranged to be flowed through by ambient air in succession and such that the coolant therein is coolable;
• the first heat exchanger arranged, relative to an air flow direction, in front of and directly adjacent to the second heat exchanger;
• wherein the cooling arrangement is structured as an individual unit;
• wherein the first heat exchanger and the second heat exchanger are fluidically connected to one another at a distribution point disposed upstream therefrom and at a collection point disposed downstream therefrom such that a part mass flow of the coolant is flowable from the second circuit into the first circuit at the distribution point, from the first circuit into the first heat exchanger, and out of the first heat exchanger back into the second circuit at the collection point;
• and
• wherein the first heat exchanger and the second heat exchanger each include a distribution box, a collection box, a deflection box, and a tube block, the distribution box and the collection box arranged at a longitudinal end of the tube block and the deflection box arranged at another longitudinal end of the tube block such that the coolant is flowable through the respective heat exchanger according to a U-flow pattern.

A method for operating a cooling system including a first circuit, a second circuit, a first heat exchanger incorporated in the first circuit and through which a coolant is flowable, and a second heat exchanger incorporated in the second circuit and through which the coolant is flowable, the first heat exchanger arranged in front of and directly adjacent to the second heat exchanger relative to an airflow direction such that ambient air is flowable through the first heat exchanger and the second heat exchanger in succession to cool the coolant, the method comprising:

• at a distribution point disposed upstream of the first heat exchanger and the second heat exchanger, branching off a part mass flow from the coolant of the second circuit and adding the branched-off part mass flow to the coolant of the first circuit;
• conducting and cooling the branched-off part mass flow via the first heat exchanger;
• and
• at a collection point disposed downstream of the first heat exchanger and the second heat exchanger, branching off the branched-off part mass flow from the first circuit and conducting the branched-off part mass flow back into the second circuit;
• wherein the distribution point fluidically connects a first distribution box of the first heat exchanger and a second distribution box of the second heat exchanger;
• and
• wherein the collection point fluidically connects a first collection box of the first heat exchanger and a second collection box of the second heat exchanger.

A cooling arrangement for a cooling system for a motor vehicle, comprising:

• a first heat exchanger incorporated in a first circuit and through which a coolant is flowable from a first inlet to a first outlet;
• a second heat exchanger incorporated in a second circuit and through which the coolant is flowable from a second inlet to a second outlet;
• the first heat exchanger and the second heat exchanger structured and arranged to be flowed through by ambient air in succession and such that the coolant therein is coolable;
• the first heat exchanger arranged, relative to an air flow direction, in front of and directly adjacent to the second heat exchanger;
• wherein the cooling arrangement is structured as an individual unit;
• wherein the first heat exchanger and the second heat exchanger are fluidically connected to one another at a distribution point disposed upstream therefrom and at a collection point disposed downstream therefrom such that a part mass flow of the coolant is flowable from the second circuit into the first circuit at the distribution point, from the first circuit into the first heat exchanger, and out of the first heat exchanger back into the second circuit at the collection point;
• and
• wherein the first heat exchanger and the second heat exchanger each include a distribution box, a collection box, and a tube block, the distribution box and the collection box arranged at opposite longitudinal ends of the tube block such that the coolant is flowable through the respective heat exchanger according to an I-flow pattern.