Valeo Systemes Thermiques

Valeo Climatisation

Regine Haller

Stefan Karl

Mohamed Yahia

Jin-Ming Liu

Didier Loup

Sylvain Moreau

Jugurtha Benouali

Bertrand Nicolas

Francois Busson

Christophe Rousseau

Laurent Labaste Mauhe

Abdelmajid Taklanti

Jean-Luc Thuez

Loic Lepetit

Christian Petit

Thierry Cheng

Laurent Delaforge

Eng Kuach

Kevin Morvan

Marie Lecollier

The invention relates to an air conditioning device comprising a refrigerant circuit and a coolant circuit. The refrigerant circuit comprises at least a compressor, an internal heat exchanger, an external heat exchanger and an evaporator The coolant circuit comprises at least a first heat exchanger associated with a first component, a second heat exchanger associated with a second component and a radiator. A fluid/fluid heat exchanger is installed in the refrigerant circuit and in the coolant circuit, with the coolant circuit comprising a first loop and a second loop which are interconnected by an interconnection device. The first loop comprises the fluid/fluid heat exchanger, the first heat exchanger associated with the first component and a means for heating the coolant with the means interposed between the interconnection device and the fluid/fluid heat exchanger, the second loop comprising the second heat exchanger associated with the second component and the radiator.

Device for air conditioning a drive train and a passenger compartment of a vehicle

Evaporator, notably for motor vehicle air-conditioning circuit. According to the invention, the evaporator (), which comprises three layers&#x2014;upstream (), intermediate () and downstream ()&#x2014;through which there flows a coolant that enters the evaporator () via the intermediate layer () and leaves the evaporator via the upstream layer () to cool an air flow (A) passing in succession across said upstream (), intermediate () and downstream () layers, comprises means (E) for inducing a pressure drop between the outlet of the intermediate layer () and the inlet of the downstream layer ().

Multi-layer evaporator for motor vehicle air-conditioning circuit

A device for expanding a refrigerant fluid has a first inlet and a first outlet which are connected by a first refrigerant circulation duct. The first refrigerant circulation duct has an upstream part and a downstream part which parts are placed in communication by a first communication passage. The device also has a second inlet and a second outlet which are connected by a second refrigerant circulation duct. The device regulates an expansion of the refrigerant fluid and has a first needle valve housed inside the upstream part of the first refrigerant flow duct connected by a first connecting rod to a thermostatic sensor in communication with the second refrigerant flow duct that allows or prevents refrigerant fluid from circulating through the first communicating passage. The device also measures the pressure of the refrigerant fluid entering the evaporator (Pse) which pressure measurement is taken at the first outlet.

Thermostatic expansion device and air conditioning loop comprising such a thermostatic expansion device

A command device () includes a sensor () for the measurement of a measured value VM of a characteristic C of a fluid FR,A and a comparison () of the measured value VM of the characteristic C of the fluid FR,A with at least two step-values VSmin, VSmax of the characteristic C. The command device () includes an upstream temperature sensor () to be positioned upstream the evaporator () according to the air flow direction () to measure an upstream temperature Tof the air flow () and give an information () which is taken into account by the command device () in order to determine the step-values VSmin, VSmax of the characteristic C.

Device for controlling a fixed-capacity compressor

A heat exchanger for a heat transfer fluid circuit comprising ducts for the circulation of the heat transfer fluid, which are inserted between an inlet and an outlet, is described. Cavities designed to contain a heat storage fluid adjacent to the cooling fluid circulation ducts and associated with heat-exchanger surfaces, so that heat storage fluid is capable of exchanging heat with the air flow, if the circulation of the heat transfer fluid is stopped, are also described.

Heat exchanger with thermal inertia for a heat transfer fluid circuit, particularly of a motor vehicle

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Boissy Sans Avoir, France

Regine Haller