Motor structure of combining different types of channel steel
A technology of motor structure and channel steel, applied in the direction of magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the problems of low utilization rate of rotor channel steel, poor ventilation effect, etc., and improve the wind driving ability of the rotor , Improvement of flow efficiency and enhancement of gas flow performance
Inactive Publication Date: 2016-12-21
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0005] The embodiment of the present invention provides a motor structure combining different types of channel steel to overcome the problem of poor ventilation effect of the existing motor due to the low utilization rate of the rotor channel steel
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[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0030] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...
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The invention provides a motor structure of combining different types of channel steel. The motor structure mainly comprises rotor cores, radial ventilation ducts and the channel steel, wherein the stator cores are distributed along the axial direction of a motor; the radial ventilation ducts are arranged between the adjacent rotor cores; each radial ventilation duct comprises the channel steel with I-shaped sections distributed along the circumference; each rotor core comprises stator teeth and stator slots; the stator teeth and the stator slots of the adjacent rotor cores are in one-to-one correspondence in the axial direction; a winding is put into each stator slot; and the channel steel is arranged between the stator teeth of the adjacent rotor cores. The channel steel with the I-shaped sections is high in mechanical property; the manufacturing cost is reduced; the smoothness of the ventilation duct walls is improved; the wind wear loss in each ventilation duct is effectively reduced; the flow direction of a cooling gas can be changed through changing the quantity of the channel steel; the tail eddy current loss of a stator coil is effectively reduced; and the heat emission efficiency of the motor is increased by about 10%.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a motor structure combining different types of channel steels. Background technique [0002] For large and medium-sized motors with radial ventilation system, the loss of the stator part of the motor mainly dissipates heat through the cooling air flow of radial ventilation grooves. However, when the cooling gas passes through the radial ventilation groove, the flow velocity increases due to the sudden narrowing of the wind path section; when the cooling gas flows out from the tail of the stator bar, due to the gas on both sides of the stator bar The large difference in flow velocity causes eddy currents to form at the tail of the stator coil, and the wind speed in the middle of the eddy current is extremely small, which seriously affects the heat dissipation at the tail of the stator coil. If the ventilation structure design of the motor is unreasonable, the local temperature ris...
Claims
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Login to View More IPC IPC(8): H02K1/32
CPCH02K1/32H02K2213/03
Inventor 曹君慈李伟力李栋张晓晨陈思彭程
Owner BEIJING JIAOTONG UNIV