Cooling apparatus for cooling at least one electronic component , comprising - a heat sink , which has an outer peripheral area , a base area opening , a top area opening opposite the base area opening and an inner area with cooling ribs , - a heat sink cover , - a tube-shaped cooling element and - an impeller with blades for generating a cooling flow of a cooling medium , wherein - the top area opening is closed off by the heat sink cover , - the tube-shaped cooling element is arranged in the heat sink interior of the heat sink such that at least some of the cooling ribs are in mechanical contact with the outer side of the tube-shaped cooling element , - in its interior, the tube-shaped cooling element forms a first cooling duct , through which the cooling flow is conducted in a first cooling flow direction during operation of the cooling apparatus , - a second cooling duct is formed between the inner area of the heat sink and the outer side of the tube-shaped cooling element , through which the cooling flow is conducted in a second cooling flow direction during operation of the cooling apparatus , - a redirecting means redirects the cooling flow from the first cooling duct to the second cooling duct or from the second cooling duct to the first cooling duct during operation of the cooling apparatus and - the first cooling duct is arranged opposite the second cooling duct such that the first cooling flow direction is substantially opposite the second cooling flow direction and - wherein a depression of the heat sink cover facing towards the heat sink interior is embodied such that it partially or completely surrounds the peripheral extent of the rotation body forming during operation of the cooling apparatus by way of the rotating blades of the impeller . - a heat sink , which has an outer peripheral area , a base area opening , a top area opening opposite the base area opening and an inner area with cooling ribs , - a heat sink cover , - a tube-shaped cooling element and - an impeller with blades for generating a cooling flow of a cooling medium , - the top area opening is closed off by the heat sink cover , - the tube-shaped cooling element is arranged in the heat sink interior of the heat sink such that at least some of the cooling ribs are in mechanical contact with the outer side of the tube-shaped cooling element , - in its interior, the tube-shaped cooling element forms a first cooling duct , through which the cooling flow is conducted in a first cooling flow direction during operation of the cooling apparatus , - a second cooling duct is formed between the inner area of the heat sink and the outer side of the tube-shaped cooling element , through which the cooling flow is conducted in a second cooling flow direction during operation of the cooling apparatus , - a redirecting means redirects the cooling flow from the first cooling duct to the second cooling duct or from the second cooling duct to the first cooling duct during operation of the cooling apparatus and - the first cooling duct is arranged opposite the second cooling duct such that the first cooling flow direction is substantially opposite the second cooling flow direction and - wherein a depression of the heat sink cover facing towards the heat sink interior is embodied such that it partially or completely surrounds the peripheral extent of the rotation body forming during operation of the cooling apparatus by way of the rotating blades of the impeller . <EOS>