Rotor heat dissipation structure with different combinations of motor rotor slot steel
A technology of motor rotor and heat dissipation structure, applied in the direction of electric components, magnetic circuit shape/style/structure, electrical components, etc., can solve the problems of poor ventilation effect and low utilization rate, and achieve good cooling effect, low temperature, and enhanced gas The effect of flow properties
Inactive Publication Date: 2017-02-01
HARBIN UNIV OF SCI & TECH
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Problems solved by technology
[0003] The technical problem of the present invention is: to overcome the problem of poor ventilation effect of the existing motor due to the low utilization rate of the rotor ventilation channel steel, and to propose a ventilation structure that effectively improves the wind driving capacity of the rotor, so that the flow efficiency of the cooling medium inside the motor is relatively improved , the cooling effect is improved
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[0019] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0020] Such as figure 1 , figure 2 and image 3 as shown ( figure 2 for figure 1 Enlarged view of part A in middle, image 3 a for figure 1 main view, image 3 b for figure 1 Right view), the rotor heat dissipation structure under different combinations of motor rotor channel steel according to the present invention mainly includes radial ventilation grooves (1), rotor teeth (2), axial ventilation channels (3), rotor core (4) and channel steel (5). For a large motor with a capacity above 1MW, the rotor core (4) is evenly divided into several segments along the axial direction, and the number n of segments is related to the axial length D of the rotor of the motor, that is, n=D / 187˜D / 210. A certain gap is left between adjacent rotor cores (4) to form a radial ventilation ditch (1). The axial width L of the radial ventilation ditch (1)...
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The invention relates to a rotor heat dissipation structure with different combinations of motor rotor slot steel. The rotor heat dissipation structure mainly comprises radial ventilating ducts, rotor teeth, axial ventilating channels, rotor iron cores and multiple pieces of slot steel, wherein the rotor iron cores are uniformly divided into multiple sections in an axial direction; certain gaps are formed between adjacent rotor iron cores to form the radial ventilating ducts; the rotor teeth of the adjacent segmented rotor iron cores are arranged in a one-to-one correspondence manner; the multiple pieces of the slot steel are positioned in the radial ventilating ducts, distributed along the circumference, and mounted between the rotor teeth of the adjacent segmented rotor iron cores; two or three pieces of linear slot steel with I-shaped sections are placed between each two rotor teeth of the adjacent segmented rotor iron cores; and slotting is performed in positions, close to a rotary shaft, of the rotor iron cores to form the axial ventilating channels to provide access to flowing of a cooling medium. According to the rotor heat dissipation structure, an air blowing capability and fluid guiding effect can be fully played under the premise of ensuring the supporting strength, so that the heat dissipation effect of the rotor is improved to a large degree, and the operating efficiency of the motor is further improved.
Description
technical field [0001] The invention relates to a rotor cooling structure with different combinations of motor rotor channel steels, and belongs to the field of motor ventilation technology and design and manufacture. Background technique [0002] Inside the motor with high power density, the rotor core of the motor is segmented, and radial air passages are formed between the core segments, and channel steel is attached inside to play the role of supporting components. At the same time, during the rotation of the motor, the rotor ventilation channel steel can play the role of a fan to a certain extent, and can improve the flow characteristics of the cooling medium. Chinese Patent No. 201320330289.4 describes the I-shaped cross-section channel steel, which can effectively improve the strength, but does not fully consider the effect of the channel steel on changing the gas flow; The boundary layer between the cooling gas in the ditch increases the heat dissipation area, but t...
Claims
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Login to View More IPC IPC(8): H02K1/32H02K1/26
CPCH02K1/32H02K1/265
Inventor 丁树业蒋山张琦
Owner HARBIN UNIV OF SCI & TECH