Device for supporting and electric motor driving a turbine, in particular for an automobile heating, ventilation and/or air conditioning apparatus

Abstract

The device ( 10 ) of the invention comprises a shaped box having a bottom wall ( 12 ) connected to a peripheral wall ( 14 ) in order to delimit a housing ( 20 ) for receiving the enclosure ( 22 ) of an electric motor ( 24 ) driving a turbine ( 32 ), the latter being received in a volute ( 26 ). The bottom wall ( 12 ) has in it at least two holes ( 48 ) at a distance from the rotation axis (XX) defined by the motor shaft so as to allow the passage of a flow of cooling air (F) which passes through the enclosure ( 22 ) of the motor and rejoins the volute ( 36 ). Application in particular to automobile heating, ventilation and/or air-conditioning apparatus.

1 - 10 . (cancelled)  
   
   
       11 . Device for supporting an electric motor ( 24 ) driving a turbine ( 32 ), in which the electric motor comprises an enclosure ( 22 ) and a shaft ( 26 ) driving the turbine, which defines a rotation axis (XX), the device comprising a shaped box ( 10 ) having a bottom wall ( 12 ) connected to a peripheral wall ( 14 ) in order to delimit a housing ( 20 ) for receiving the motor enclosure, which opens out in a volute ( 36 ) receiving the turbine, 
 wherein the bottom wall ( 10 ) is generally planar and has in it at least two holes ( 48 ) situated at a distance from the rotation axis (XX) of the motor ( 24 ), to allow the passage of a flow of cooling air (F) which passes through the enclosure of the motor ( 22 ) and rejoins the volute ( 36 ).    
   
   
       12 . Device as in  claim 11 , wherein the holes ( 48 ) are circular and calibrated so as to control the flow rate of the cooling air flow (F) which passes through the electric motor ( 24 ).  
   
   
       13 . Device as in  claim 11  , wherein the holes ( 48 ) are at an equal distance (D) from the axis (XX) and at equal angular intervals (A).  
   
   
       14 . Device as in  claim 12  , wherein the holes ( 48 ) are at an equal distance (D) from the axis (XX) and at equal angular intervals (A)  
   
   
       15 . Device as in claims  11 , wherein the bottom wall ( 12 ) has in it three holes ( 48 ) situated at angular intervals of 120°.  
   
   
       16 . Device as in claims  13 , wherein the bottom wall ( 12 ) has in it three holes ( 48 ) situated at angular intervals of 120°.  
   
   
       17 . Device as in claims  14 , wherein the bottom wall ( 12 ) has in it three holes ( 48 ) situated at angular intervals of 120°.  
   
   
       18 . Device as in  claim 11 , wherein the bottom wall ( 12 ) extends at a distance from one end ( 28 ) of the shaft ( 26 ), which is opposite to another end ( 30 ) of the shaft, on which the turbine ( 32 ) is keyed.  
   
   
       19 . Device as in  claim 12 , wherein the bottom wall ( 12 ) extends at a distance from one end ( 28 ) of the shaft ( 26 ), which is opposite to another end ( 30 ) of the shaft, on which the turbine ( 32 ) is keyed.  
   
   
       20 . Device as in  claim 14 , wherein the bottom wall ( 12 ) extends at a distance from one end ( 28 ) of the shaft ( 26 ), which is opposite to another end ( 30 ) of the shaft, on which the turbine ( 32 ) is keyed.  
   
   
       21 . Device as in  claim 11 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       22 . Device as in  claim 12 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       23 . Device as in  claim 14 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       24 . Device as in  claim 15 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       25 . Device as in  claim 16 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       26 . Device as in  claim 18 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       27 . Device as in  claim 19 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       28 . Device as in  claim 20 , wherein the cylindrical wall ( 14 ) is connected to a substantially annular front wall ( 16 ) forming part of the volute ( 36 ).  
   
   
       29 . Heating, ventilation and/or air-conditioning apparatus for the cabin of an automobile, of the type comprising at least one air blower ( 66 ;  52 ) having an electric motor ( 24 ) driving a turbine ( 32 ), wherein the electric motor ( 24 ) is supported by a device ( 10 ) as in  claim 11 .  
   
   
       30 . Heating, ventilation and/or air-conditioning apparatus for the cabin of an automobile, of the type comprising at least one air blower ( 66 ;  52 ) having an electric motor ( 24 ) driving a turbine ( 32 ), wherein the electric motor ( 24 ) is supported by a device ( 10 ) as in  claim 12 .  
   
   
       31 . Heating, ventilation and/or air-conditioning apparatus for the cabin of an automobile, of the type comprising at least one air blower ( 66 ;  52 ) having an electric motor ( 24 ) driving a turbine ( 32 ), wherein the electric motor ( 24 ) is supported by a device ( 10 ) as in  claim 13 .  
   
   
       32 . Apparatus as in  claim 29 , wherein the air blower is produced as a main air blower ( 66 ) mounted at the inlet of an air treatment box ( 64 ) which the apparatus includes, the main blower ( 66 ) being arranged so as to send a flow of air to be treated into the air treatment box ( 64 ).  
   
   
       33 . Apparatus as in  claim 30 , wherein the air blower is produced as a main air blower ( 66 ) mounted at the inlet of an air treatment box ( 64 ) which the apparatus includes, the main blower ( 66 ) being arranged so as to send a flow of air to be treated into the air treatment box ( 64 ).  
   
   
       34 . Apparatus as in  claim 31 , wherein the air blower is produced as a main air blower ( 66 ) mounted at the inlet of an air treatment box ( 64 ) which the apparatus includes, the main blower ( 66 ) being arranged so as to send a flow of air to be treated into the air treatment box ( 64 ).  
   
   
       35 . Apparatus as in  claim 29 , wherein the air blower is produced as a relay blower ( 52 ) mounted at the outlet of an air treatment box ( 64 ) which the apparatus includes, the relay blower ( 52 ) being arranged so as to send a flow of treated air coming from the air treatment box ( 64 ) to at least one distribution nozzle ( 76 ) situated at a chosen location inside the cabin.  
   
   
       36 . Apparatus as in  claim 30 , wherein the air blower is produced as a relay blower ( 52 ) mounted at the outlet of an air treatment box ( 64 ) which the apparatus includes, the relay blower ( 52 ) being arranged so as to send a flow of treated air coming from the air treatment box ( 64 ) to at least one distribution nozzle ( 76 ) situated at a chosen location inside the cabin.  
   
   
       37 . Apparatus as in  claim 31 , wherein the air blower is produced as a relay blower ( 52 ) mounted at the outlet of an air treatment box ( 64 ) which the apparatus includes, the relay blower ( 52 ) being arranged so as to send a flow of treated air coming from the air treatment box ( 64 ) to at least one distribution nozzle ( 76 ) situated at a chosen location inside the cabin  
   
   
       38 . as in  claim 35 , wherein the electric motor of the relay blower ( 52 ) has a consumption of less than 120 watts and in that the device supporting the motor has three circular holes ( 48 ) whose diameter is less than or equal to 4 mm.