Header box for heat exchanger with thermal decoupling

Abstract

A header box (1) intended to be used in a heat exchanger (200), said header box (1) comprising a first manifold (10) and a second manifold (20), each manifold (10, 20) comprising a header plate (11, 21), a cover (13, 14) and a distribution plate (12, 22) localized between the header plate (11, 21) and the cover (13, 14), the header box (1) also comprising a mechanical link (120) between the firstmanifold (10) and the second manifold (20), the header box (1) is characterized in that a header plate (11, 21) comprises linking elements (15) configured to grab the corresponding cover (13, 14), said linking elements (15) extend from the two longitudinal sides of said header plate (11, 21) to the corresponding cover (13, 14), said longitudinal sides extend along a main axis (X) of the header box(1). The invention also relates to a heat exchanger (200) comprising such a header box (1). Finally, the invention relates to the use of a heat exchanger (200).

Description

technical field [0001] The present invention relates to the field of heat exchangers, and in particular to heat exchangers for being traversed by fluids at high pressure. In this regard, the invention more particularly relates to an air conditioning evaporator capable of being traversed by a refrigerant fluid in a supercritical state, as is the case for natural gas such as carbon dioxide, also known as CO2 or R744. Such heat exchangers are particularly useful in motor vehicles. More specifically, the present invention relates to header tanks included in such heat exchangers. Background technique [0002] Known fluid refrigerant circuits form a closed loop in which a refrigerant fluid flows in order to dissipate or collect heat through a heat exchanger. The heat exchanger includes a header box connecting the heat exchanger to a fluid refrigerant circuit, the header box connecting conduits from the fluid refrigerant circuit to the heat exchanger core to allow refrigerant flu...

AI Technical Summary

Problems solved by technology

This configuration causes thermal coupling between the first manifold and the second manifold of the header tank, thereby reducing the thermal efficiency of the heat exchanger, some heat energy is lost due to the direct transfer from the first manifold to the second manifold waste without being used by the heat exchange core of the heat exchanger

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