Electric compressor

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 39/12 (2006.01)

Patent

CA 2666619

An electric compressor in which occurrence of a defective poor shrink fit can be prevented when a stator is shrink fitted to a motor case. The compressor is characterized in that, on the inner circumferential surface of a tube inclining from the base (79) toward the opening (85) in the direction of separating from the central axis (C), a housing (67) in which a first inner circumferential portion (101) and a second inner circumferential portion (103) having a radius larger than that of the first inner circumferential portion (101) are formed, a compressing section for compressing fluid, and a rotor and a stator for rotary driving the compressing section are provided, the first inner circumferential portion (101) and the second inner circumferential portion (103) are provided with a substantially tubular insertion surface (105) having a radius larger than that of the second inner circumferential portion (103) and receiving the stator, and at least the first inner circumferential portion (101) is provided with a diameter-enlarged portion (109) having a radius larger than that of the insertion surface (105) and making substantially uniform the distance from the end of the insertion surface (105) on the opening (85) side to the opening (85).

L'invention concerne un compresseur électrique dans lequel l'apparition d'un mauvais ajustage par contraction défectueux peut être empêchée lorsqu'un stator est ajusté par contraction à un carter de moteur. Le compresseur est caractérisé par le fait que, sur la surface périphérique interne d'un tube incliné de la base (79) vers l'ouverture (85) dans la direction de séparation de l'axe central (C), sont prévus un boîtier (67), dans lequel une première partie périphérique interne (100) et une seconde partie périphérique interne (103) ayant un rayon plus grand que celui de la première partie périphérique interne (100) sont formées, une section de compression pour comprimer un fluide et un rotor et un stator pour entraîner en rotation la section de compression. La première partie périphérique interne (100) et la seconde partie périphérique interne (103) sont pourvues d'une surface d'introduction sensiblement tubulaire (105) ayant un rayon plus grand que celui de la seconde partie périphérique interne (103) et recevant un stator, et au moins la première partie périphérique interne (100) est pourvue d'une partie à diamètre agrandi (109) ayant un rayon plus grand que celui de la surface d'introduction (105) et rendant sensiblement uniforme la distance de l'extrémité de la surface d'introduction (105) sur le côté d'ouverture (85) à l'ouverture (85).

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