Heat exchanger, housing and air conditioning circuit comprising such an exchanger

A heating, ventilation and/or air conditioning installation housing comprising a heat exchanger comprising:

• a plurality of tubes arranged in a first and a second row and through which a refrigerant is configured to circulate;
• a first and a second header tank inside which the plurality of tubes of each of the said rows emerge;
• the first header tank comprising a refrigerant inlet compartment into which the tubes of the first row emerge and a refrigerant outlet compartment into which the tubes of the second row emerge,
• the second header tank comprising at least one return compartment into which at least one tube of the first row and one tube of the second row emerge;
• and
• the first header tank comprising a cover having an inlet portion and an outlet portion, the inlet portion having a semi-circular shape and the outlet portion having a flattened shape compared to the inlet portion, such that a height of the inlet portion is greater than a height of the outlet portion,
• wherein the outlet compartment has a smaller volume than the inlet compartment.