Housing of rotating motor

A technology for rotating electrical machines and housings, which is applied in the housing field of internally transformed rotating electrical machines, which can solve problems such as the difficulty in dissipating heat from the coils of the stator core, the lower overall cooling performance of the housing, and the difficulty in cooling the axial center of the stator core, etc., to achieve Improved cooling performance and improved thermal conductivity

Inactive Publication Date: 2012-05-09
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of a conventional rotating electrical machine provided with a cooling passage, the contact area of ​​the housing of the conventional rotating electrical machine with fluid such as air or lubricating oil is smaller in the axial center of the stator core than in the axial end o

Method used

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  • Housing of rotating motor
  • Housing of rotating motor
  • Housing of rotating motor

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Embodiment Construction

[0035] Below, refer to Figure 1 to Figure 4 , an embodiment of the casing of the rotating electrical machine according to the present invention will be described. It should be noted that the rotating electric machine in this embodiment is in the form of an electric motor.

[0036] exist figure 1 Among them, symbol 1 is a casing of an internal type motor (rotary electric machine), symbol 50 is a stator of the motor, and the stator 50 is fixed inside the casing 1 . That is, the housing 1 is disposed outside the stator 50 .

[0037] The stator 50 includes: a plurality of teeth 54 protruding radially inwardly in an annular stator core 51; a plurality of slots 52 formed between adjacent teeth 54, 54; Multiple coils 53 on slot 52 . A rotor (not shown) is disposed inside the stator 50 , and the rotor is rotated by passing a three-phase current through the coil 53 to generate a rotating magnetic field.

[0038] The housing 1 is made of aluminum and manufactured by aluminum casti...

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PUM

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Abstract

The present invention provides a housing of a rotating motor, which realizes improved cooling performance. The housing (1) of the rotating motor is configured at an outer peripheral side of a stator of an inner rotation type rotating motor, wherein, the housing is internally provided a cooling passage (2) in which cooling fluid can circulate in a circumferential direction. An inner wall surface (15) at the inner peripheral side of the cooling passage (2) is provided with a plurality of heat radiating sheets (16) that project in a radial direction. In the plurality of heat radiating sheets (16), the radial length of the heat radiating sheet (16) which is configured at an axial central part is larger than that of the heat radiating sheets (16) that are configured at axial ends. The outer peripheral surface (12a) of the housing (1) is provided with a maximal outer diameter part (14) with a maximal-radial-dimension at an axial position which corresponds with a maximal-outer-diameter heat radiating sheet (16a). The radial dimension of the outer peripheral surface (12a) of the housing (1) enlarges gradually from the axial ends to the maximal outer diameter part (14) of the housing (1).

Description

technical field [0001] The invention relates to a casing of an inner-type rotating electrical machine. Background technique [0002] There is known an internal type electric motor in which an annular stator is fixed inside a casing, and a rotor rotates inside the stator. The stator is constituted by winding coils in a plurality of slots of the stator core, and by passing, for example, three-phase currents through the coils, a rotating magnetic field is generated to rotate the rotor including the permanent magnets. [0003] However, when current is passed through the coils of the stator, the coils and the stator core generate heat, and the temperature of the stator core rises. Therefore, not only relying on natural heat dissipation to the outside air, but also providing a cooling passage inside the housing, by passing the cooling fluid in the The cooling passage circulates to dissipate the heat of the stator core to the cooling fluid through the case, thereby actively suppre...

Claims

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Application Information

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IPC IPC(8): H02K5/20H02K5/18
Inventor 池田智香子
Owner HONDA MOTOR CO LTD
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