EP-4739519-A1 - ASSEMBLY COMPRISING HEAT EXCHANGERS FOR A VEHICLE

EP4739519A1EP 4739519 A1EP4739519 A1EP 4739519A1EP-4739519-A1

Abstract

The invention relates to an assembly (340), in particular for a vehicle, comprising: - a first heat exchanger (121) configured to allow heat exchange between: o a flow of a heat transfer fluid, in particular a water-based heat-transfer fluid, within this first heat exchanger (121), this flow of heat transfer fluid being configured to belong to a first heat transfer fluid circulation loop (100); and o an additional flow of an additional heat transfer fluid, in particular a refrigerant or a dielectric fluid, within this first heat exchanger; - a second heat exchanger (221) configured to allow heat exchange between: o a flow of a heat transfer fluid within this second heat exchanger, this flow of heat transfer fluid being configured to belong to a second heat transfer fluid circulation loop (200); and o an additional flow of an additional heat transfer fluid within this second heat exchanger; - a one-piece body comprising a first receptacle (181) arranged to accommodate the first heat exchanger (121) and a first cavity arranged to form the first degassing reservoir (131).

Inventors

DURBERCQ, Gael
GARNIER, SEBASTIEN
Nacer-Bey, Moussa
MAMMERI, Amrid
Azzouz, Kamel

Assignees

VALEO SYSTEMES THERMIQUES

Dates

Publication Date: 20260513
Application Date: 20240627

Claims (10)

[Claim 1] Assembly (340) in particular for a vehicle, comprising: - a first heat exchanger (121) configured to allow an exchange of heat between: o a flow of heat transfer fluid, in particular water-based, within this first heat exchanger (121), this flow of heat transfer fluid being configured to belong to a first heat transfer fluid circulation loop (100), and o an additional flow of an additional heat transfer fluid, in particular a refrigerant fluid or a dielectric fluid, within this first heat exchanger, - a second heat exchanger (221) configured to allow an exchange of heat between: o a flow of heat transfer fluid within this second heat exchanger, this flow of heat transfer fluid being configured to belong to a second loop (200) for circulation of heat transfer fluid, and o an additional flow of an additional heat transfer fluid within this second heat exchanger, - a first degassing tank (131) in which heat transfer fluid from the first heat exchanger can circulate to undergo degassing enabling a gas, in particular air, present in the heat transfer fluid to be separated, - a second degassing tank (231) in which heat transfer fluid from the second heat exchanger can circulate to undergo degassing making it possible to separate a gas, in particular air, present in the heat transfer fluid, the first and second tanks being attached to each other, - a single-piece body comprising a first receptacle (181) arranged to receive the first heat exchanger (121) and a first cavity arranged to form the first degassing tank (131).
[Claim 2] Assembly according to the preceding claim, in which the single-piece body (350) comprises, in addition to the first receptacle (181) arranged to receive the first heat exchanger (121) and the first cavity arranged to form the first degassing tank (131), a second receptacle (281) arranged to receive the second heat exchanger (221) and a second cavity arranged to form the second degassing tank (231).
[Claim 3] Assembly according to the preceding claim, in which at least one of the receptacles (181; 281) is configured so that, when the heat exchanger is placed in this receptacle, a fluid path (400) for the heat transfer fluid is formed between a side wall (401) of the receptacle and a peripheral wall (402) of this heat exchanger.
[Claim 4] Assembly according to one of the preceding claims, in which the two heat exchangers are assembled on a common support plate (410).
[Claim 5] Assembly according to the preceding claim, in which the support plate (410) comprises a single inlet (413) and a single outlet (414) for the additional heat transfer fluid.
[Claim 6] Assembly according to the preceding claim, in which the additional heat transfer fluid circulates, between this inlet (413) and this outlet (414), successively in one of the heat exchangers then in the other of the heat exchangers.
[Claim 7] Assembly according to the preceding claim, in which the support plate (410) comprises a boss (420) forming a passage for the additional heat transfer fluid allowing it to pass from one of the heat exchangers to the other of the heat exchangers.
[Claim 8] Assembly according to one of the preceding claims, in which the assembly comprises a plate (351) forming a seat for one or more components with a fluidic function, in particular one or more pumps, and/or one or more valves for regulating the circulation of heat transfer fluid, in particular a multi-way valve.
[Claim 9] Assembly according to the preceding claim, in which the plate (351) is formed as a separate part of the single-piece body, and preferably assembled with this single-piece body.
[Claim 10] An assembly according to claim 8, in which the plate is a part of the one-piece body, j

Description

Description TITLE OF THE INVENTION: ASSEMBLY COMPRISING HEAT EXCHANGERS FOR A VEHICLE [1] The present invention relates to an assembly comprising heat exchangers for a vehicle. [2] The vehicle may be land, sea or air. [3] Generally speaking, we are trying to reduce the size of components in vehicles. This is a major challenge. In the context of a vehicle heat pump, one avenue of work is to compact all of its components, in particular the refrigerant circuit and the heat transfer fluid circuit. [4] The invention aims in particular at such an aim. [5] The invention thus relates to an assembly, in particular for a vehicle, comprising: - a first heat exchanger configured to allow an exchange of heat between: o a flow of heat transfer fluid, in particular water-based, within this first heat exchanger, this flow of heat transfer fluid being configured to belong to a first heat transfer fluid circulation loop, and o an additional flow of an additional heat transfer fluid, in particular a refrigerant fluid or a dielectric fluid, within this first heat exchanger, - a second heat exchanger configured to allow heat exchange between: o a flow of heat transfer fluid within this second heat exchanger, this flow of heat transfer fluid being configured to belong to a second heat transfer fluid circulation loop, and o an additional flow of an additional heat transfer fluid within this second heat exchanger, - a first degassing tank in which heat transfer fluid from the first heat exchanger can circulate to undergo degassing to separate a gas, in particular air, present in the heat transfer fluid, - a second degassing tank in which heat transfer fluid from the second heat exchanger can circulate to undergo degassing to separate a gas, in particular air, present in the heat transfer fluid, the first and second tanks being attached to each other, - a single-piece body comprising a first receptacle arranged to receive the first heat exchanger and a first cavity arranged to form the first degassing tank. [6] The term "heat transfer fluid" shall be used to refer to the heat transfer fluid that supplies the heat transfer fluid circulation loops. The term "additional heat transfer fluid" shall be used to refer to the heat transfer fluid (for example, a refrigerant used in an air conditioning system) that circulates following the additional flow, outside the heat transfer fluid circulation loops. The "heat transfer fluid" and the "additional heat transfer fluid" are, most often, two fluids of different natures. [7] According to one aspect of the invention, the heat transfer fluids which supply the first and second heat transfer fluid circulation loops are the same, being in particular glycolated water. [8] Alternatively, the heat transfer fluids which supply the first and second heat transfer fluid circulation loops are of different natures. [9] According to one aspect of the invention, the single-piece body comprises, in addition to the first receptacle arranged to receive the first heat exchanger and the first cavity arranged to form the first degassing tank, a second receptacle arranged to receive the second heat exchanger and a second cavity arranged to form the second degassing tank. [10] In other words, the monobloc body serves as a support for the two heat exchangers and to define the degassing tanks. [11] According to one aspect of the invention, the cavities arranged to form the degassing tanks are separated from each other by a separating partition, in particular a flat partition. [12] According to one aspect of the invention, the receptacles arranged to receive the heat exchangers are located side by side, and in particular share a common side. [13] According to one aspect of the invention, the common side extends along a plane. [14] According to one aspect of the invention, the receptacles each have a perimeter with at least three straight sides. [15] According to one aspect of the invention, the perimeter of the receptacles is substantially rectangular. [16] According to one aspect of the invention, the receptacles arranged to receive the heat exchangers have perimeters of different shapes and/or dimensions. [17] According to one aspect of the invention, the receptacles are arranged to receive the heat exchangers which are of different dimensions. [18] For example, one of the receptacles is configured to receive a heat exchanger larger than the heat exchanger housed in the other receptacle. [19] It is possible to adapt the size of the heat exchangers according to the cooling requirements on each heat transfer fluid circulation loop. [20] If necessary, it is possible to have identical heat exchangers in both receptacles. [21] According to one aspect of the invention, at least one of the receptacles is configured such that, when the heat exchanger is placed in this receptacle, a fluid path for the heat transfer fluid is formed between a side wall of the receptacle and a peripheral wall of this heat exchanger. This make