Title:
COOLING MODE AND COOLING STRUCTURE OF INTERNAL CIRCULATION EVAPORATIVE COOLING MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/092805
Kind Code:
A1
Abstract:
The present application relates to a cooling mode and a cooling structure of an internal circulation evaporative cooling motor. The cooling mode comprises liquid cooling and air cooling. An independent sealing cavity is formed between each of the two end surfaces of a motor stator and a machine base, and a corresponding inner end cover; an evaporative cooling working medium is injected into the sealing cavities at two ends; the stator is axially provided with a liquid cooling channel; the circulating cooling of the stator portion of the motor is realized by means of an external evaporative cooling circulation system; the motor stator and the sealing cavities at the two ends are axially provided with an air cooling channel; a rotor is axially provided with a rotor ventilation channel; and an air cooling circulation loop is formed between the air cooling channel, an air gap between the rotor and the stator, and the rotor ventilation channel. According to the present application, a liquid cooling pipe is arranged at the yoke portion of a stator core, and the liquid cooling pipe is attached to an iron core in a cold pressing mode; the yoke portion of the stator core is provided with an air cooling pipe so as to form a stator cooling air path structure; and the yoke portion of a rotor iron is provided with a rotor ventilation channel, and the evaporative cooling medium in the stator is used to cool the circulating air of a rotor portion, so that the temperature rise of the rotor portion is reduced.
Inventors:
ZHANG JIANGTAO (CN)
WU NAN (CN)
CAI XIAO (CN)
SUN DEQIANG (CN)
NI WEI (CN)
LI JIABIN (CN)
WU NAN (CN)
CAI XIAO (CN)
SUN DEQIANG (CN)
NI WEI (CN)
LI JIABIN (CN)
Application Number:
PCT/CN2021/142501
Publication Date:
June 01, 2023
Filing Date:
December 29, 2021
Export Citation:
Assignee:
CRRC YONGJI ELECTRIC CO LTD (CN)
International Classes:
H02K5/10; H02K9/04; H02K9/193
Domestic Patent References:
| WO2021114606A1 | 2021-06-17 |
Foreign References:
| US4323803A | 1982-04-06 | |||
| CN1889333A | 2007-01-03 | |||
| CN1960126A | 2007-05-09 | |||
| CN110277875A | 2019-09-24 | |||
| CN201113681Y | 2008-09-10 | |||
| JP2012029398A | 2012-02-09 | |||
| KR20110117503A | 2011-10-27 | |||
| CN112803677A | 2021-05-14 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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