Rotary Machine Inverter Layout With Integrated Electric Oil Pump
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Solution Overview
Problem
The existing rotary machine systems face challenges in installation workability due to the need for connecting oil supply and discharge pipes, and are prone to communication errors from noise interference between the inverter and the oil pump's electric components.
Innovation Solution
The rotary machine system design positions the rotary machine and inverter adjacent to each other, with shared casing walls, allowing the oil pump's motor and pump portions to penetrate through a common wall and the electric portion to be housed in the inverter, eliminating external piping and reducing communication line exposure to noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inverter and oil pump are disposed at positions away from the rotary machine, then the rotary machine can operate independently, but it takes time and effort to install the system due to connecting oil supply and discharge pipes
Solution Approach 1:
The patent merges the inverter and oil pump into a single integrated unit that is disposed adjacent to the rotary machine. The inverter housing and oil pump housing are coupled together to form a unified assembly, eliminating the need for separate piping connections and reducing installation complexity while maintaining functional independence of each component.
Solution Approach 2:
The oil pump is positioned within the inverter housing structure, with the oil pump housing nested alongside or within the inverter housing. This nesting arrangement allows both components to occupy adjacent space efficiently, reducing the overall footprint and eliminating external piping requirements while maintaining operational independence.
2Reliability
If communication lines are drawn outside the rotary machine for communication between the inverter and oil pump, then the system can communicate, but communication errors occur due to noise entry
Solution Approach 1:
The inverter and oil pump are integrated into a single housing assembly, allowing communication between the two components to occur through internal wiring within the protected housing rather than external communication lines. This merging eliminates exposure to external noise sources while maintaining full communication functionality.
Solution Approach 2:
The integrated housing structure serves as an intermediary protective barrier between the communication lines and external noise sources. By routing communication lines internally within the housing rather than externally, the housing acts as a shield that prevents noise interference while still allowing necessary signal transmission between components.
3Ease of manufacture
If the oil pump is disposed separately from the inverter, then each component can be maintained independently, but installation workability deteriorates due to multiple connection points
Solution Approach 1:
The inverter and oil pump are merged into a single integrated assembly where their housings are coupled together. This merging reduces the number of separate installation steps and connection points while maintaining the ability to service each component independently through accessible service ports and modular design.
Solution Approach 2:
While the housings are integrated, the internal components remain segmented and independently accessible. The oil pump and inverter are designed as separate functional modules within the integrated housing, allowing each to be maintained or replaced independently through service ports without requiring disassembly of the entire assembly.
Data Source
AI summary
Installation workability of a motor system 1 is improved and occurrence of a communication error between an inverter 50 and an electric portion 83 of an electric oil pump 80 due to entry of noise can be suppressed.A motor portion 2 and the inverter 50 are adjacent to each other in a motor axial direction, at an adjacent portion, a wall of a casing of the inverter 50 on an arrow A direction side and a wall of a casing of the motor portion 2 on an arrow B direction side are shared as a barrier 3b made of the same member, and in a position that a pump portion 81 side of the electric oil pump 80 including a pump portion 81, an internal motor 82, and an electric portion 83 arranged in the motor axial direction faces the arrow A direction side, the electric oil pump 80 is disposed in the casing of the motor portion 2 and the inverter 50.