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Electric centrifugal compressor for vehicles

a technology of centrifugal compressor and electric motor, which is applied in the direction of machines/engines, liquid fuel engines, and positive displacement liquid engines, etc., can solve the problems of low operating speed, friction loss, and loss of compactness,

Inactive Publication Date: 2014-01-23
SKF MAGNETIC MECHATRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution reduces friction losses, enhances compactness, and improves operational efficiency by enabling higher speeds and minimizing contamination risks through contactless levitation and controlled positioning of the shaft, thereby addressing the drawbacks of conventional electric compressors.

Problems solved by technology

Such types of electric motor driven compressors have many drawbacks linked to lubrication, refrigerants, low operating speed, friction losses and loss of compactness.

Method used

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  • Electric centrifugal compressor for vehicles
  • Electric centrifugal compressor for vehicles
  • Electric centrifugal compressor for vehicles

Examples

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Embodiment Construction

[0037]The present invention will be described in connection with preferred embodiments which are given by way of examples.

[0038]FIG. 2 shows an example of a centrifugal electric compressor for heat ventilation air conditioning (HVAC) which may be dedicated for hybrid electric vehicles (HEV) or electric vehicles (EV) or else for aircrafts or other types of vehicles. Such centrifugal electric compressor may also be applied to boost a turbocharger.

[0039]A rotor shaft 15 of a motor portion 20 is coupled to a centrifugal compressor wheel 11 of a compressor portion 10 to drive the centrifugal compressor wheel 11.

[0040]An electrical motor 30 comprises a rotor 31 which may be of any type chosen among induction rotor, permanent magnet rotor, hysteresis rotor and reluctance rotor. The electrical motor 30 further comprises a stator 32 with windings 32a.

[0041]First and second active radial magnetic bearings 40, 50 are located on each side of the electrical motor 30 to support the shaft 15 in l...

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PUM

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Abstract

An electric centrifugal compressor for a heat ventilation air conditioning system for vehicles comprises a motor portion (20) and a centrifugal compressor portion (10) driven by the motor portion (20) through a shaft (15). It comprises an electromagnetic device for levitating the shaft (15) during functional operation of the electric compressor and auxiliary landing bearings (8). The electromagnetic device may comprise in particular an axial bearingless motor.

Description

FIELD OF THE INVENTION[0001]The present invention relates to an electric centrifugal compressor which is more specifically adapted to be used in a Heat Ventilation Air Conditioning (HVAC) installation for vehicles. The vehicles may include in particular terrestrial vehicles such as hybrid electric vehicles (HEV) or electric vehicles (EV) as well as aircrafts or other kinds of vehicles.BACKGROUND OF THE INVENTION[0002]Conventional Electric compressors, such as HVAC compressors for vehicles are typically associated with an electric motor.[0003]An example of such electric motor driven compressor is given in patent document U.S. Pat. No. 6,183,215 B1.[0004]Such types of electric motor driven compressors have many drawbacks linked to lubrication, refrigerants, low operating speed, friction losses and loss of compactness.[0005]Two main categories of HVAC electric compressors are used in HEV / EV vehicles: rotary like vane compressors and oscillating like scroll type compressors.[0006]Both t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D29/058
CPCF04D29/058H02K7/09H02K7/083H02K7/14F16C32/0495F16C32/0497F16C2380/26F16C2360/44F04D25/0606F04D29/051
Inventor RAMDANE, LATEBDA SILVA, JOAQUIMHELENE, ERICPONSON, FREDERICSCHROEDER, ULRICH
Owner SKF MAGNETIC MECHATRONICS