Cooling and air conditioning apparatus for an electric vehicle
First Claim
1. Apparatus for cooling a propulsion motor of a vehicle and for at least one function selected from heating, ventilating and air conditioning of a cabin of the same vehicle, with the apparatus being adapted in any event for heating the said cabin, the apparatus comprising means defining an air circuit including the cabin;
- a radiator arranged in said circuit for cooling the propulsion motor and for heating the cabin;
air inlet means connected to the air circuit for introducing air from at least one of the zones comprising the cabin and the environment outside the vehicle;
a blower in the air circuit downstream of said inlet means for producing a current of ventilating air drawn from the latter;
an air inlet regulating means associated with the air inlet means, for varying from 0 to 100% a first ratio between the air flow drawn from outside the vehicle and the total flow produced by the blower;
an air outlet means connected to the said air circuit for exhausting air from the latter to the environment outside the vehicle;
air outlet regulating means associated with the said air outlet means for progressively opening and closing the latter, the apparatus further comprising a heat source in the air circuit downstream of the said blower, and mixing means in the air circuit for varying from 0 to 100% a second ratio representing the fraction of the air flow coming into contact with the said heat source with respect to the air flow delivered into the cabin, wherein;
(a) the said air inlet regulating means is upstream of the blower,(b) the said heat source is the said cooling radiator,(c) the air circuit defines means for permitting free flow of air through it from the blower to the heat source, and means downstream of the said heat source defining a first air flow path for evacuation of the air to outside the vehicle and a second air flow path towards the cabin, the said air outlet regulating means being arranged to obturate the said first path and the said mixing means being arranged to obturate the said second path,(d) the apparatus further includes a control member and guide means defining a uniform course of travel for the said control member, the latter being operatively connected to the two said regulating means and to the mixing means, and to the blower, to control the positions of the regulating means and mixing means and the air flow output of the blower, with the said guide means defining the said uniform course of travel in the form of;
a first portion along which;
the said first ratio varies from a value close to, but distinct from, 100% to 0;
the air outlet regulating means remains fully open;
the said second ratio remains equal to 0; and
the output of the blower varies progressively from a maximum value to a minimum value, anda second portion along which;
the said first ratio varies from 0 to 100%;
the air outlet regulating means is displaced progressively from its fully open to its fully closed position;
the said second ratio varies progressively from 0 to 100%; and
the air flow of the blower increases progressively from its said minimum value.
2 Assignments
0 Petitions
Accused Products
Abstract
An electric vehicle has a radiator for cooling the traction motor of the vehicle, arranged in an air circuit which also contains a blower for circulating air in the circuit, and air flow regulating valves. The apparatus disclosed includes an air conditioning apparatus which comprises an evaporator and an auxiliary electric heating radiator, both of which are controlled jointly by a control member movable along a linear path to regulate the cooling or heating of the cabin as necessary, at the same time as the cooling of the motor.
45 Citations
7 Claims
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1. Apparatus for cooling a propulsion motor of a vehicle and for at least one function selected from heating, ventilating and air conditioning of a cabin of the same vehicle, with the apparatus being adapted in any event for heating the said cabin, the apparatus comprising means defining an air circuit including the cabin;
- a radiator arranged in said circuit for cooling the propulsion motor and for heating the cabin;
air inlet means connected to the air circuit for introducing air from at least one of the zones comprising the cabin and the environment outside the vehicle;
a blower in the air circuit downstream of said inlet means for producing a current of ventilating air drawn from the latter;
an air inlet regulating means associated with the air inlet means, for varying from 0 to 100% a first ratio between the air flow drawn from outside the vehicle and the total flow produced by the blower;
an air outlet means connected to the said air circuit for exhausting air from the latter to the environment outside the vehicle;
air outlet regulating means associated with the said air outlet means for progressively opening and closing the latter, the apparatus further comprising a heat source in the air circuit downstream of the said blower, and mixing means in the air circuit for varying from 0 to 100% a second ratio representing the fraction of the air flow coming into contact with the said heat source with respect to the air flow delivered into the cabin, wherein;(a) the said air inlet regulating means is upstream of the blower, (b) the said heat source is the said cooling radiator, (c) the air circuit defines means for permitting free flow of air through it from the blower to the heat source, and means downstream of the said heat source defining a first air flow path for evacuation of the air to outside the vehicle and a second air flow path towards the cabin, the said air outlet regulating means being arranged to obturate the said first path and the said mixing means being arranged to obturate the said second path, (d) the apparatus further includes a control member and guide means defining a uniform course of travel for the said control member, the latter being operatively connected to the two said regulating means and to the mixing means, and to the blower, to control the positions of the regulating means and mixing means and the air flow output of the blower, with the said guide means defining the said uniform course of travel in the form of; a first portion along which;
the said first ratio varies from a value close to, but distinct from, 100% to 0;
the air outlet regulating means remains fully open;
the said second ratio remains equal to 0; and
the output of the blower varies progressively from a maximum value to a minimum value, anda second portion along which;
the said first ratio varies from 0 to 100%;
the air outlet regulating means is displaced progressively from its fully open to its fully closed position;
the said second ratio varies progressively from 0 to 100%; and
the air flow of the blower increases progressively from its said minimum value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a radiator arranged in said circuit for cooling the propulsion motor and for heating the cabin;
Specification