Linear Compressor Mass Member Polygonal Shape Design
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Solution Overview
Problem
Conventional linear compressors face challenges in accommodating a maximum mass member in a defined space, leading to material waste and assembly inefficiencies due to the annular shape of the mass member and interference with neighboring components, which increases manufacturing costs and reduces operational reliability.
Innovation Solution
A linear compressor design featuring a mass member with a polygonal shape and guide holes/grooves for precise assembly, reducing material usage and interference, while maintaining sufficient mass and minimizing installation space, thus enhancing assembly efficiency and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the mass member is designed with an annular shape to fit the supporter structure, then it can be assembled with the supporter, but it causes material waste and increases manufacturing cost
Solution Approach 1:
The mass member is segmented into a polygonal shape (e.g., square or rectangular) instead of a continuous annular form, allowing it to be cut from sheet metal with minimal waste while still providing the necessary mass and structural function
Solution Approach 2:
The mass member transitions from a symmetric annular shape to an asymmetric polygonal shape that optimizes material usage by fitting the available space in the movable member assembly without requiring the complete circular form
2Ease of manufacture
If the mass member is designed with an annular shape, then it can be assembled with the supporter, but it interferes with neighboring components reducing operational reliability
Solution Approach 1:
The polygonal shape of the mass member is specifically designed to fit within the available space without interfering with neighboring components such as the suction valve, discharge valve assembly, or mainsprings, thereby ensuring reliable operation
Solution Approach 2:
The mass member's shape is optimized locally to provide sufficient mass in critical areas while maintaining clearances from neighboring components, ensuring both assembly compatibility and operational reliability
3Productivity
If guide holes or guide grooves are added to components for precise assembly, then assembly efficiency is enhanced, but device complexity increases
Solution Approach 1:
The guide holes and guide grooves enable the components to self-align during assembly, reducing the need for complex alignment procedures or additional alignment tools, thereby improving assembly efficiency without proportionally increasing complexity
Solution Approach 2:
The guide holes and guide grooves act as intermediary features that facilitate the alignment and assembly of the mass member with the supporter and other components, simplifying the assembly process
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 design allows for a more efficient assembly process with reduced material waste and interference, ensuring reliable operation and lower manufacturing costs by optimizing the mass member's shape and incorporating guide features for accurate positioning.
Implementation Method 1
an interactive electromagnetic force between the inner stator 6a, the outer stator 6b, and the permanent magnet 6c makes the permanent magnet 6c linearly reciprocating to actuate the piston 3
Implementation Method 2
the structure including a frame 1, a cylinder 2, a piston 3, a suction valve 4, a discharge valve assembly 5, a linear motor 6, a motor cover 7, a supporter 8, a body cover 9, mainsprings S1 and S2
Data Source
AI summary
A linear compressor comprises: a fixed member including a cylinder for providing a refrigerant compression space; a movable member, which includes a piston for compressing refrigerant inside the cylinder and a supporter composed of a center portion being aligned with a center of the piston and a support portion extended radially of the piston and which makes a linear reciprocating movement about the fixed member; a plurality of mainsprings supported on the support portion of the supporter, for elastically supporting the piston in an axial direction; and a mass member, which includes a center portion to couple with the center portion of the supporter and a plurality of ends extended from the center portion to maintain an air-gap towards the support portion of the supporter and towards the mainsprings. The linear compressor of the present invention can accommodate a maximum mass member in a defined space of a linearly reciprocating movable member, so material loss is prevented and more installation space can be secured.