Electric Compressor Inverter Substrate Vibration Control
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Solution Overview
Problem
The existing electric compressors with integrally formed inverter boxes suffer from vibration issues that affect the durability of the inverter substrate, and traditional methods to suppress vibration, such as using additional fasteners, compromise space efficiency.
Innovation Solution
An electric compressor design that includes a reinforcing member extending from the inverter box to the inverter substrate, which is soldered but not electrically connected, effectively suppressing vibration without reducing space efficiency by allowing the bus bar to be soldered at any desired position without considering circuit layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional fasteners are provided at remote positions of the substrate to suppress vibration, then vibration suppression is improved, but space efficiency of the substrate is decreased
Solution Approach 1:
The patent replaces the mechanical fastening system with a soldering system. Instead of using additional mechanical fasteners that would require threaded holes and occupy space on the substrate, the invention uses a reinforcing member that is soldered to the substrate surface. This substitution eliminates the need for space-consuming fastener holes while still achieving vibration suppression through the mechanical connection provided by the soldered reinforcing member.
2Object-affected harmful factors
If fasteners are used to fix the inverter substrate to the inverter box, then vibration of the substrate is suppressed, but the vibration of remote portions cannot be suppressed successfully
Solution Approach 1:
The patent transitions from a two-dimensional fastening approach (fasteners on the surface) to a three-dimensional solution by extending a reinforcing member from the inverter box into the substrate. This vertical extension allows the reinforcing member to reach and support remote portions of the substrate that would otherwise be far from fastener locations, providing vibration suppression across the entire substrate area including previously unreachable remote regions.
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
This design enhances the durability of the inverter substrate by effectively suppressing vibration, maintaining space efficiency, and preventing strain on the substrate, thus improving the overall performance and reliability of the compressor.
Implementation Method 1
a second end soldered to the first surface or the second surface of the inverter substrate
Data Source
AI summary
An electric compressor including a compression mechanism, an electric motor driving the compression mechanism, a housing accommodating the compression mechanism and the electric motor, an inverter box located on an outer surface of the housing, an inverter substrate accommodated in the inverter box and having an inverter circuit supplying electric power to the electric motor, the inverter substrate having a first surface and a second surface that is a reverse surface of the first surface, a plurality of fastening members fixing the inverter substrate to the inverter box, and a reinforcing member having a first end fixed to the inverter box and a second end soldered to the first surface or the second surface of the inverter substrate. The reinforcing member extends toward the first surface or the second surface of the inverter substrate in the inverter box. The reinforcing member is not electrically connected to the inverter circuit.