Linear Compressor Frame Reinforcement for Deformation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional linear compressors face reduced frame strength due to increased cylinder size, leading to fastening deformation and low operation reliability when the frame size is limited.
Innovation Solution
A linear compressor design with a frame featuring a mounting hole and a deformation prevention portion around it, along with resistance reduction holes, to enhance fastening strength and reduce air resistance during piston reciprocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cylinder size is increased to improve compression capacity, then the compression efficiency is improved, but the frame strength is reduced leading to fastening deformation
Solution Approach 1:
The patent applies local quality by adding a reinforcement rib at the specific location where the cylinder is mounted on the frame. This reinforcement rib locally increases the thickness and strength of the frame at the mounting portion, allowing the frame to support a larger cylinder without fastening deformation while maintaining the overall frame design.
2Volume of moving object
If the frame size is limited to reduce overall compressor size, then the compactness is improved, but the frame strength is reduced when accommodating larger cylinders
Solution Approach 1:
The reinforcement rib provides localized strengthening at the critical mounting portion without increasing the overall frame dimensions. This allows the frame to accommodate larger cylinders for improved compression capacity while maintaining a compact overall compressor size.
Solution Approach 2:
The reinforcement rib adds structural strength in the radial direction (thickness dimension) at the mounting portion, while the frame overall maintains its compact dimensional constraints. This dimensional approach allows strength enhancement without increasing the external footprint of the compressor.
3Volume of stationary object
If the mounting hole is enlarged to accommodate larger cylinders, then the cylinder size is increased, but the fastening strength is reduced
Solution Approach 1:
The reinforcement rib is positioned at the mounting hole area to locally compensate for the reduced fastening strength caused by the enlarged mounting hole. This allows the mounting hole to be sufficiently large for larger cylinders while the reinforcement rib maintains the necessary fastening strength.
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 reinforced frame structure reduces fastening deformation and improves operation reliability by maintaining structural integrity even with larger cylinder sizes, minimizing collisions between the piston and cylinder during operation.
Implementation Method 1
linearly reciprocated due to a mutual electromagnetic force between the inner stator 6a, the outer stator 6b and the permanent magnet 6c
Implementation Method 2
The supporter 8 connected to the other end of the piston 3 is installed between the motor cover 7 and the rear cover 9 to be elastically supported by the main springs S1 and S2 in an axis direction
Implementation Method 3
refrigerant in a compression space P serves as a kind of gas spring to buff the piston 3 and the supporter 8
Implementation Method 4
When the linear motor 6 is operated, the piston 3 and the muffler assembly 10 connected thereto are linearly reciprocated. Since a pressure inside the compression space P is varied, the operations of the suction valve 4 and the discharge valve assembly 5 are automatically controlled.
Data Source
AI summary
A linear compressor is provided that includes a cylinder having a compression space for refrigerant therein, a piston that linearly reciprocates inside the cylinder in an axis direction to compress the refrigerant, and a frame having a mounting hole so that one end of the cylinder may be mounted thereon and a deformation prevention portion in some section around the mounting hole brought into contact with the one end of the cylinder. Even if a size of the cylinder is increased and a size of the frame limited, the frame is provided with enough strength to support the cylinder, thereby reducing fastening deformations and improving operation reliability.