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Circumferential radial multipath oil cooling system for high-speed motor

An oil cooling system and high-speed motor technology, applied in the electrical field, can solve problems such as uneven temperature distribution and rotor temperature rise, and achieve the effects of weakening the influence, reducing the working temperature rise, and reducing the axial temperature difference

Active Publication Date: 2013-09-11
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the current problem of high temperature distribution of high-speed motors, high rotor temperature rise and unbalanced temperature distribution, and proposes a circumferential radial multi-channel oil cooling system, which improves the working stability of the entire motor

Method used

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  • Circumferential radial multipath oil cooling system for high-speed motor
  • Circumferential radial multipath oil cooling system for high-speed motor
  • Circumferential radial multipath oil cooling system for high-speed motor

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Embodiment

[0025] Embodiment: high-speed motor circumferential radial multi-channel oil cooling system, such as Figure 1 to Figure 10 As shown, the device includes: stator core 3, rotor 4, casing 5, end cover 6;

[0026] The stator core of the motor is equipped with a multi-channel oil cooling system 1;

[0027] An oil inlet is opened at the axial middle position of the stator frame, and the oil inlet is connected with the oil inlet channels 1-6 of the multi-channel oil cooling system 1;

[0028] An axial cooling passage 1-3 is opened at a certain distance from the iron core of the stator yoke to the outer circle of the iron core, including the top axial cooling passage 1-3-1 located at the vertical upper part of the stator iron core, and the bottom axial cooling passage located at the vertical lower part of the stator iron core. To the cooling passage 1-3-2 and the middle and lower axial cooling passage 1-3-3 and the middle and lower axial cooling passage 1-3-4 located in the lower pa...

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Abstract

The invention relates to the electric field, in particular to a circumferential radial multipath oil cooling system for a high-speed motor. An oil inlet which is connected with an oil inlet channel of the oil cooling system is formed in the axial middle of a stator frame. Axial cooling passages are formed at positions at certain distance from an excircle of each stator yoke iron core. Each stator yoke iron core is provided with circumferential arc cooling passages. Each stator yoke iron core is provided with radial cooling passages. End circumferential arc cooling passages are formed at two ends of each stator yoke iron core. Comb-shaped guide plates are disposed at two ends of each stator yoke iron core. The circumferential radial multipath oil cooling system has the advantages that different cooling passages combine a three-dimensional cooling path network, working temperature rising of the high-speed motor is lowered effectively, system stability of the motor is increased, axial temperature difference of a rotor is reduced evidently, and influence, caused by unbalanced heat stress distribution, on the motor is weakened.

Description

technical field [0001] The invention relates to the electrical field, in particular to a multi-channel oil cooling system for the circumferential direction of a high-speed motor. Background technique [0002] High-speed motors generally have the characteristics of high working speed, small size, high material utilization rate, fast dynamic response and high efficiency of transmission system. Therefore, high-speed motors are widely used in distributed power generation systems, flywheel energy storage systems, aerospace, high-speed grinding machines, hybrid power It has advantages and good application prospects in the fields of automobiles, ships, textiles, centrifugal compressors for air conditioners or refrigerators, as well as military vehicles, tanks, aircraft, land and sea defense, and mobile power supply. [0003] Compared with conventional motors, the heat load of high-speed motors is greatly increased, and at the same time, the loss per unit volume of the motor and the...

Claims

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Application Information

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IPC IPC(8): H02K9/197
Inventor 李伟力张晓晨李锦洲曹君慈张金林刘慧娟陈辰汪家俊邱洪波
Owner BEIJING JIAOTONG UNIV
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