Heat exchanger and integrated air-conditioning assembly including such exchanger

Abstract

The invention relates to a heat-exchanger for an air-conditioning circuit that includes a first pipe (110) defining a path for a flow of fluid, the first pipe being spirally wound about a so-called exchanger axis (A). According to the invention, the heat exchanger (9) further includes at least one second pipe (120a, 120b) defining a path for a flow of a second fluid, said second pipe being provided against a surface of the first pipe (110) and spirally wound together with said first pipe (110) about said axis (A). The invention can be used in air-conditioning circuits operating with a super-critical coolant, in particular carbon dioxide (CO2).

Description

technical field [0001] The invention relates to heat exchangers for air conditioning systems. It also relates to the use of said heat exchanger as an internal exchanger of an air-conditioning system, an integrated assembly for an air-conditioning system operated with a coolant, and an air-conditioning system comprising such an integrated assembly. [0002] The invention is particularly advantageously applied in the field of air conditioning systems operating with supercritical coolants such as carbon dioxide (CO 2 ). Background technique [0003] Air conditioning systems of this type generally include a compressor, a gas cooler, an internal exchanger, an expansion chamber and an accumulator. The coolant, which has been made high pressure by the compressor, is sent to the gas cooler to be cooled. The high pressure fluid from the cooler then flows in the first branch of the internal exchanger before being expanded through the expansion chamber. The low pressure fluid then ...

AI Technical Summary

Problems solved by technology

[0011] However, this solution requires the use of a relatively complex inner core

Images