Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
  • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
  • F02B39/02—Drives of pumps; Varying pump drive gear ratio
  • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
  • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
  • F04D25/068—Mechanical details of the pump control unit
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
  • F04D25/0693—Details or arrangements of the wiring
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/58—Cooling; Heating; Diminishing heat transfer
  • F04D29/5813—Cooling the control unit

Definitions

• the present invention relates to the field of electric compressors, and more particularly to an electric supercharger for a motor vehicle.
• an electric compressor is a device used to supercharge a heat engine, operating with an electric motor driving a compressor wheel and having an electronic assembly.
• the electric compressor is placed on the air intake line of an internal combustion engine, in addition for example a turbocharger.
• the electric compressor plays the same role as the turbocharger, namely increase the intake pressure of the fresh gases in the engine, but is used in particular during transient phases to overcome turbocharger response time problems.
• the electronic assembly is placed between the rear of the wheel and the assembly forming the electric motor.
• This arrangement of electronics has the disadvantage of being in an area close to the wheel, which area is very hot.
• the present invention therefore aims to overcome one or more of the disadvantages of the devices of the prior art by providing an electric compressor whose disposal of electronics is improved, thus optimizing the size of the compressor and the cooling of the compressor. electronics and engine.
• the present invention proposes an electric compressor comprising at least one compressor wheel driven by an electric motor assembly controlled by an electronic assembly, the electronic assembly being disposed outside the motor assembly in an electronic housing that is independent of the motor assembly.
• the electric motor assembly comprises at least one electric motor arranged in a motor housing, the electronic housing 8 being disposed outside the motor housing.
• the electronic housing is arranged around the motor coaxially with respect to a shaft of the compressor 1.
• the electronic housing is formed of two sub-housings, an upper housing and a lower housing.
• the electronic housing is disposed on a rear plate of the compressor wheel.
• the compressor comprising a cooling circuit arranged inside the lower housing of the electronic housing.
• the cooling circuit is disposed at the rear of the compressor wheel.
• the compressor comprising a cover disposed on the electric motor assembly and the electronic assembly.
• the electric motor is a permanent magnet motor.
• the invention also relates to the use of the electric compressor according to the claim in an internal combustion engine or fuel cell.
• FIG. 1 is a schematic sectional representation showing an electric compressor according to the invention.
• the present invention relates to an electric compressor 1.
• the term electric compressor 1 an air compressor, volumetric or not and for example centrifugal or radial, driven by an electric motor, for the purpose of supercharging a heat engine.
• the electric motor is an asynchronous DC or AC motor, or any type of electric motor of the same type.
• the electric motor is a variable reluctance motor (also called SRM machine for Switched Reluctance Motor according to English terminology).
• the motor is a permanent magnet motor.
• FIG. 1 illustrates an example of an electric compressor 1.
• the electric compressor 1 comprises at least one electric motor assembly 2, and a compressor wheel 3.
• the electric motor assembly comprises a housing 4 or envelope 4 motor in which is disposed, inside, an electric motor 5.
• the electric motor 5 comprises at least one rotor and a stator.
• the electric motor 5 allows the rotation of a shaft 6 of the electric compressor via bearings 7.
• the shaft 6 thus rotates the wheel 3 of the compressor 1. More precisely one end of the shaft 6 is rotated. by the electric motor, and another end of the shaft 6 rotates the wheel 3 of the compressor.
• the compressor 1 comprises an electronic assembly 9 for controlling the electric compressor 1.
• the electronic assembly 9 is disposed outside the engine assembly 2.
• the electronic assembly 9 is disposed outside the motor housing 4, in an electronic housing 8 independent of the whole 2 engine.
• This electronic housing 8 serves as a support for the elements of the electronic assembly.
• the upper portion 81 of the electronic housing 8 serves to support the electronic assembly 9.
• the lower portion 82 of the electronic housing 8 serves as a housing for the cooling circuit.
• the electronic housing 8 thus consists of two sub-housings 81, 82, an upper housing 81 and a lower housing 82.
• lower and upper being defined relative to the compressor wheel 3.
• the lower sub-housing 82 being the one located closest to the compressor wheel 3.
• the electronic housing 8 thus forms a ring disposed around the housing 4 engine.
• the electronic housing 8 is disposed around the electric motor, co-axially relative to the shaft 6 of the compressor.
• the electronic housing 8 is thus arranged all around the motor assembly 2 along the axis of the shaft 6.
• the electronic housing 8 is disposed on a rear plate 10 of the compressor wheel 1.
• the electric compressor 1 thus comprises a cooling circuit 11 located in the sub-housing 82 of the lower housing 8 electronic.
• the cooling circuit 10 is thus disposed at the wheel 3 of the compressor, that is to say at the rear face 31 of the wheel 3.
• the cooling circuit 11 is thus disposed at the rock of the electronic assembly 9. More precisely, the cooling circuit 11 is disposed between the rear of the wheel 31 and the electronic assembly 9.
• Such a configuration optimizes the cooling of the electronic assembly and reduces the size of the compressor.
• the compressor 1 conventionally comprises a volute 12 allowing the passage of air from the compressor 1.
• the wheel 3 of the compressor is disposed in the volute 12.
• the wheel of the compressor 1 is a paddle wheel.
• the compressor 1 comprises a protective cover 11 arranged on the electric motor assembly 2 and the electronic assembly 9.
• the cover is fixed to the electronic housing 8.
• the electronic assembly 9 is fixed to the motor housing 4.
• the electronic assembly 9 is fixed inside the protective cover 11.
• a compressor according to the invention is used in a combustion engine, and for example an internal combustion engine or fuel cell.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Compressor (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56555414

Family Applications (1)

Country Status (4)

Citations (3)

• 2015
  • 2015-12-18 FR FR1562852A patent/FR3045723B1/fr not_active Expired - Fee Related
• 2016
  • 2016-10-21 WO PCT/FR2016/052737 patent/WO2017103354A1/fr active Application Filing
  • 2016-10-21 EP EP16806220.6A patent/EP3390835A1/fr not_active Withdrawn
  • 2016-10-21 CN CN201680080467.9A patent/CN108700080A/zh active Pending

Patent Citations (3)

Non-Patent Citations (1)

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