Motor Rotor Cooling via Internal Pipe Ejection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motors lack an effective cooling mechanism for the rotor, which can lead to overheating and reduced efficiency and lifespan.
Innovation Solution
A motor design incorporating a cooling device with a mounting seat, a cooling pipe, and ejection holes that allows cooling liquid to flow into and be sprayed onto the rotor, effectively dissipating heat through a sealed system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling device is added to the motor, then the rotor cooling efficiency is improved, but the device complexity increases
Solution Approach 1:
The cooling pipe is nested inside the rotor structure, with the cooling liquid flowing through channels formed within the rotor's internal cavity. This nesting approach integrates the cooling function directly into the rotor without requiring external cooling components, thereby improving rotor temperature control while minimizing increases in overall device complexity
Solution Approach 2:
A cooling liquid circulation system is introduced, where cooling liquid is pumped through the cooling pipe embedded in the rotor. The hydraulic flow carries heat away from the rotor windings and core, effectively reducing rotor temperature. The system includes a cooling liquid inlet connected to the cooling pipe and an outlet that returns the heated liquid to the cooling source
2Productivity
If the motor operates at high power, then the productivity is improved, but the rotor overheating problem worsens
Solution Approach 1:
The cooling liquid flows continuously through the cooling pipe during motor operation, maintaining constant heat removal from the rotor. This continuous cooling action allows the motor to sustain high power output over extended periods without rotor overheating, as the cooling process operates continuously alongside the motor's power generation
Solution Approach 2:
Cooling liquid serves as an intermediary heat transfer medium between the rotor (heat source) and the external cooling system (heat sink). The liquid absorbs heat from the rotor windings and core through the cooling pipe walls and transports it away, enabling the rotor to dissipate heat efficiently while maintaining high power operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cooling device efficiently cools the rotor, enhancing motor performance and longevity by maintaining optimal operating temperatures.
Implementation Method 1
The cooling liquid can flow into the cooling pipe through the inlet hole and be sprayed onto the rotor through the ejection holes, and the cooling liquid can flow out of the rotor through the outlet hole
Implementation Method 2
the cooling liquid can flow into the cooling pipe through the inlet hole and be sprayed onto the rotor through the ejection holes
Data Source
AI summary
A motor includes a main body and a cooling device. The cooling device includes a mounting seat defining an inlet hole and an outlet hole spaced from the inlet hole, and a cooling pipe communicating with the inlet hole and defining a plurality of ejection holes on a sidewall. The main body includes a rotor sleeved and sealed on the mounting seat. The cooling pipe is received in the rotor. Cooling liquid sprays at the rotor via the inlet hole and the ejection holes, and then the cooling liquid flow out of the rotor via the outlet hole.