Valeo Systemes Thermiques

Valeo Climatisation

Jean Gatinois

Laurent Tellier

Gilbert Terranova

Bertrand Puzenat

Ruben Vela Garcia

Pierre Derveloy

Karen Chauvin

The invention relates to a heating module for a supplemental electric heating device for heating an airflow, comprising at least one heat-conductive bar against which at least one electric resistor is arranged. The heat-conductive bar is partially electrically insulated by an insulating coating in order to prevent potential short-circuits and to ensure proper operation and optimal safety when heating the passenger compartment of a vehicle.

Insulated heating module for a supplemental heating device

The present invention relates to a power supply module () for an electrical device (), in particular using direct current, the power supply module () including a capacitor-input filter () arranged in parallel on the electrical device (). The power supply module () comprises a means () for detecting the discharge current (I) supplied by the capacitor-input filter () following a short-circuit in the power supply module (). The invention can be used the power supply circuits of automobile electrical devices, in particular the motors of an electric fan unit for creating an air flow in heating, ventilation and/or air-conditioning systems.

Method for detecting a short-circuit, and power supply module implementing said method

The invention relates to a system for controlling the speed of a motor () of an electric fan unit comprising a field-effect transistor () that controls the motor () using pulse-width modulation, the field-effect transistor () being connected to a circuit () comprising a voltage source () and a resistive element () in series, the circuit () is connected between the gate (G) of the field-effect transistor () and a second source (S) that is connected to a first source (S) of the field-effect transistor (), via an inductor () in order to allow a reduction in the slope of the current as the field-effect transistor () switches.

System for controlling the speed of a motor of an electric fan unit, notably for an automobile heating and/or air conditioning installation

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Jouars Pontchartrain, France

Jean Gatinois