Refrigeration cycle apparatus
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Solution Overview
Problem
In refrigeration cycle apparatuses, the vibration-induced stress on wires connecting electric components leads to potential contact failure and disconnection due to differing vibration states between the compressor's motor driver and the overall control component, which are typically fixed at different locations.
Innovation Solution
The refrigeration cycle apparatus design includes a common base for both the electric components, ensuring they share a similar vibration state, reducing displacement and stress on connecting wires, and integrates them within an electric-component unit for enhanced stability and protection from environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first electric component and second electric component are fixed at different locations (compressor support member and housing respectively), then the overall control function is achieved, but vibration-induced stress on connecting wires causes contact failure and disconnection
Solution Approach 1:
The patent merges both the first electric component (compressor motor driver) and second electric component (overall control) onto the same base structure. This consolidation ensures they share identical vibration characteristics, eliminating differential vibration stress on connecting wires and preventing contact failure, while simultaneously reducing structural complexity by unifying the mounting platform
Solution Approach 2:
By fixing both electric components on the same base, the patent creates an equipotential vibration environment where both components experience identical vibration amplitudes and frequencies. This eliminates the vibration potential difference between components that previously caused stress on connecting wires, thereby improving connection reliability
2Ease of operation
If the first electric component is disposed close to the compressor on the support member, then the motor driving function is achieved, but differential vibration with the control component causes wire stress
Solution Approach 1:
The patent combines both electric components on the same base, allowing the first electric component to remain close to the compressor for efficient motor control while the second electric component is also positioned on the base rather than in the housing. This merging maintains operational efficiency while eliminating wire stress through shared vibration characteristics
3Reliability
If the electric components are fixed to the housing away from the compressor, then the control function is achieved, but the connecting wires are subjected to repeated stress from vibration displacement
Solution Approach 1:
The base serves as an intermediary platform that both electric components are fixed to. This intermediary structure allows the components to maintain their control functions while sharing a common reference frame that eliminates differential vibration stress on connecting wires, thereby removing the harmful vibration effect without compromising control reliability
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 configuration minimizes wire disconnection and contact failure, reduces noise, and enhances vibration suppression, leading to improved reliability and performance by stabilizing both electric components and reducing environmental exposure.
Implementation Method 1
The first elastic member is disposed on the base. The compressor is disposed on the base via the first elastic member. The second elastic member is disposed on the bottom member. The base is disposed on the bottom member via the second elastic member.
Data Source
AI summary
A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.