Hollow-Shaft Diaphragm Coupling for Integrated Motor Cooling
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Solution Overview
Problem
Diaphragm couplings in high-capacity motor systems face output reduction due to heat generation, and external cooling methods are inefficient in maintaining motor performance.
Innovation Solution
A diaphragm coupling design with hollow shafts and a communication passage for cooling fluid circulation between the shafts, along with seal portions to prevent leakage, allowing efficient cooling of the driving source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external cooling methods are used for the motor, then cooling is provided, but cooling efficiency is insufficient and motor performance cannot be maintained
Solution Approach 1:
The patent merges the cooling function with the coupling structure by integrating the cooling fluid circulation path into the hollow shafts of the coupling. The cooling fluid flows through the hollow driving shaft and hollow driven shaft, combining the torque transmission function with the cooling function in a single integrated structure, thereby achieving high-efficiency cooling without requiring separate external cooling systems.
Solution Approach 2:
The patent uses hydraulic cooling by circulating cooling fluid through the hollow shafts of the coupling. The cooling fluid flows through the interior of the driving shaft and driven shaft, using fluid dynamics to efficiently remove heat from the motor, thereby maintaining motor performance while solving the cooling problem.
2Loss of energy
If hollow shafts with communication passage are provided for cooling fluid circulation, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The hollow shafts of the coupling serve multiple functions: they transmit torque while simultaneously providing a circulation path for cooling fluid. The communication passage between the driving shaft and driven shaft enables thermal coupling while maintaining mechanical connectivity. This multi-functionality reduces the need for separate cooling components, thereby improving cooling efficiency without significantly increasing overall device complexity.
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 fluid circulation effectively cools the motor, enhancing its performance and reducing heat-related output losses.
Implementation Method 1
The cooling fluid circulation effectively cools the motor, enhancing its performance and reducing heat-related output losses.
Implementation Method 2
a communication passage letting hollow regions of the driving shaft and the driven shaft communicate with each other to form a circulation space for a cooling fluid
Data Source
AI summary
A flexible unit absorbing misalignment and transmitting torque from a driving shaft to a driven shaft is provided between a pair of flanges individually provided on each of the driving shaft side and the driven shaft side, both the driving shaft and the driven shaft being hollow. A communication passage letting hollow regions of the driving shaft and the driven shaft communicate with each other to form a circulation space for a cooling fluid is provided in the flexible unit. The flow of the cooling fluid cooling a driving source driving and rotating the driving shaft from the inside is created in the circulation space. A seal portion seals between the circulation space and an outside space to prevent leakage of the cooling fluid from the circulation space to the outside space.