Linear Compressor Suction Guide Coupling Guide
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Solution Overview
Problem
In linear compressors, the suction pipe is prone to damage and separation from the back cover due to differing materials and applied loads, leading to noise issues and instability during operation.
Innovation Solution
A coupling guide is introduced between the back cover and suction guide, featuring a ring-shaped design with elastic properties and a twisted configuration to maintain a stable coupling force, preventing thermal deformation and inertial forces from causing separation, and incorporating a carbon steel wire for enhanced elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction pipe is coupled to the back cover using a coupling member or adhesive, then the suction pipe can be attached to the back cover, but the suction pipe may be damaged by the coupling force or separated from the back cover due to thermal deformation and inertial forces
Solution Approach 1:
A coupling guide is introduced as an intermediary component between the suction pipe and the back cover. The coupling guide is formed of an elastic material and configured to surround the outer circumferential surface of the suction pipe, distributing the coupling forces and preventing direct stress concentration on the suction pipe. This intermediary structure maintains stable attachment while protecting the suction pipe from damage.
2Ease of manufacture
If the suction pipe is formed of a light plastic material and the back cover is formed of a heavy magnetic material, then the materials are suitable for their respective functions, but the suction pipe may be damaged when coupled using a coupling member due to material difference
Solution Approach 1:
The coupling guide is designed with elastic properties and a specific geometric configuration (twisted configuration with groove and ridge) that allows it to adapt to the different material characteristics of the suction pipe and back cover. The elastic material of the coupling guide can deform to accommodate the light plastic suction pipe while maintaining secure attachment to the heavy magnetic back cover, resolving the strength issue caused by material differences.
3Stability of the object's composition
If the back cover is elastically supported by the second spring, then the back cover can be elastically supported, but a large load may be applied to the back cover by elastic force or vibration during operation
Solution Approach 1:
The coupling guide acts as an intermediary that distributes and mitigates the loads transmitted from the back cover to the suction pipe. When the back cover experiences large loads from spring elastic force or vibration, the coupling guide's elastic material and twisted configuration absorb and distribute these forces, preventing them from being concentrated on the suction pipe attachment points.
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 coupling guide ensures a firm and stable attachment between the suction guide and back cover, reducing noise and preventing damage from friction, while maintaining operational efficiency and noise reduction across various frequencies.
Implementation Method 1
a coupling guide introduced between the back cover and suction guide, featuring a ring-shaped design with elastic properties
Implementation Method 2
preventing thermal deformation and inertial forces from causing separation
Data Source
AI summary
A linear compressor is provided that may include a shell including a refrigerant suction inlet, a cylinder provided in the shell, a piston reciprocated in the cylinder, a suction muffler movable together with the piston, the suction muffler defining a refrigerant passage, a suction guide provided at one side of the piston to guide a refrigerant suctioned through the refrigerant suction inlet to the suction muffler, a back cover coupled to the suction guide, and a coupling guide provided in a space defined by the suction guide and the back cover to maintain a coupling force between the suction guide and the back cover.