Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Internal water cooling motor

An electric motor and water cooling technology, applied in the field of electric motors, can solve problems such as the inability to meet the cooling requirements of electric motors, and achieve the effects of reducing abnormal wear, good effect and easy production.

Inactive Publication Date: 2008-04-09
JIANGSU YUANDONG ELECTRIC MOTOR MFG
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the shortcomings of the prior art that the ambient temperature is relatively high, which cannot satisfy the cooling of the motor, and proposes an internal water-cooled motor with simple structure, obvious cooling effect, fast cooling speed and dustproof performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Internal water cooling motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1 is a 30KW marine motor used in an electric reciprocating pump in the engine room of a 300,000-ton freighter, and the rated power of the internal water-cooled motor is small. The water inlet 5 of the left end cover 1 and the water outlet 6 of the right end cover 3 are connected by M25mm internal threaded holes, and the cooling water pipe with an inner diameter of φ20mm meets the supply of cooling water. When the ship sails normally, the temperature in the engine room reaches 60°C to 80°C, and the temperature of the motor shell of the prior art working under this environment is 110°C to 130°C. A motor with a water-cooled structure is used as a comparative test. Under the same conditions, the flow introduced from the water inlet 5 of the left end cover 1 is 0.01m 3 / s, the cooling water with a water temperature of 15°C flows out from the water outlet 5 of the right end cover 3 after heat exchange, and the motor can be cooled and kept at 65°C to 85°C within 13 ...

Embodiment 2

[0016] Embodiment 2 is to use the built-in water-cooled structure motor in the same freighter engine room, its rated power is 82KW, the calorific value is larger than that of Embodiment 1, and the amount of cooling water consumed is also more than Embodiment 1. In this embodiment, the water inlet 5 of the left end cover 1 and the water outlet 6 of the right end cover 3 adopt a flange connection structure, and the inner hole is 25 mm. The shell 2 is provided with 18 axially staggered elongated ribs 7 to form an axial labyrinth water channel, and the flow rate introduced from the water inlet 5 of the left end cover 1 is 0.03m 3 / s, cooling water with a water temperature of 15°C flows out from the water outlet of the right end cover 3 after heat exchange, and the cooling water can be cooled to 70°C to 90°C within 10 minutes to ensure that the motor operates at a safe temperature.

Embodiment 3

[0017] Embodiment 3 is the same as Embodiment 2, except that the water channel provided in the casing 2 is formed by spiral ribs 7 to form a spiral water channel. The heat exchange time of the cooling water in the internal water channel of this structure is long, and the cooling effect is better than that of Examples 1 and 2.

[0018] The cooling water temperature introduced in the present invention directly affects the cooling effect. The cooling effect of cooling water at a low temperature is better than that of cooling water at a slightly higher temperature.

[0019] The invention is an internal water-cooled motor, which adopts a fully enclosed structure, so that dust in the environment cannot enter the inside of the motor, keeps the inside of the motor clean, effectively reduces abnormal wear and tear, and improves the service life of the motor.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an internal water-cooling motor, which comprises a left end cover and a right end cover fixed with two axial ends of a cover through bolts. The left end cover and the right end cover are shaped as double-layer plates and a radial section is hollow. The radial external wall of the left end cover is provided with a water inlet hole communicated with the hollow cavity, while the radial external wall of the right end cover is provided with a water outlet hole communicated with the hollow cavity as well. The water inlet hole on the left end cover and the water outlet hole on the right end cover are of inner thread connection structure or flange connection structure. The housing is in a cylindrical interlayer-typed structure, and interval rib pipes are arranged between two concentric circular sections of the housing to constitute internal water ways of the motor. Pairs of through holes are arranged on the left end cover, the right end cover and the relevant surface of the housing. The cooling water way provided by the invention is characterized with simple structure and easy manufacturing process. After cooling water is brought in, the water way can cool the operating system effectively, which is particularly applicable to the motor operating under relatively higher temperature condition.

Description

technical field [0001] The invention relates to an electric motor, in particular to an electric motor provided with an internal water cooling structure. Background technique [0002] The conventional cooling structure of a three-phase asynchronous motor is an air-cooled structure. This air-cooled structure uses the fan blade installed at the end of the motor shaft to rotate, and the air in the environment is introduced from the axial ventilation hole of the rear end cover into the motor. After heat exchange, it is discharged from the ventilation hole of the front cover to reduce the temperature of the motor. The air cooling in the prior art has a simple structure and effective cooling, which can satisfy the cooling of the motor under normal temperature conditions. However, when the ambient temperature is high, the air-cooling structure in the prior art cannot meet the cooling conditions of the motor due to the small temperature difference between the inside and outside of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/20
Inventor 殷素春顾进张新
Owner JIANGSU YUANDONG ELECTRIC MOTOR MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com