Reciprocating compressor
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Solution Overview
Problem
Reciprocating compressors using a single spring are vulnerable to vertical vibrations, transverse deflection, and structural instability, leading to potential damage and excessive wear due to impulsive forces and buckling.
Innovation Solution
A reciprocating compressor design featuring multiple elastic assemblies, including a first and second elastic member with specific diameters and stiffness ratios, supported by mounting members with guide and stopper structures to stabilize and guide the elastic components, reducing vertical vibrations and preventing excessive transverse motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spring is used to support the compression mechanism, then the structure is simple, but vertical vibrations increase and structural stability deteriorates
Solution Approach 1:
The single spring support is segmented into multiple elastic assemblies (first elastic member and second elastic member). Each elastic assembly includes multiple springs arranged in parallel, distributing the support function across multiple independent elements. This segmentation reduces vertical vibrations by preventing synchronized movement of all support elements and improves structural stability through redundant support paths.
2Volume of moving object
If elastic members are disposed close to each other, then space is saved, but transverse deflection and buckling increase
Solution Approach 1:
The elastic members are arranged in a vertical stacking configuration (first elastic member above second elastic member) rather than horizontal placement. This vertical arrangement in the vertical dimension allows sufficient transverse spacing between members to prevent buckling while maintaining compact overall volume. The guide members extend vertically to provide lateral constraints without requiring large horizontal clearance.
3Object-affected harmful factors
If elastic members are restrained in transverse direction, then transverse vibration is reduced, but assemblability deteriorates
Solution Approach 1:
The guide members provide dynamic transverse constraint rather than rigid fixed positioning. The guide grooves allow the elastic members to move freely in the vertical direction while providing soft guidance in the transverse direction. This dynamic constraint reduces transverse vibrations during operation but maintains ease of assembly by not requiring precise pre-positioning of the elastic members.
4Stability of the object's composition
If guide structures are added to elastic members, then transverse motion is controlled, but device complexity increases
Solution Approach 1:
The guide members serve multiple functions simultaneously: they provide transverse guidance for the elastic members, prevent buckling during compression, maintain alignment between the first and second elastic members, and reduce transverse vibrations. By consolidating these multiple functions into a single component design, the overall structural complexity is minimized while achieving comprehensive transverse stability.
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 significantly reduces vertical vibrations by up to 38% and transverse displacements by 71%, enhancing structural stability, preventing component collisions, and minimizing wear, while improving assembly efficiency and reducing natural frequency.
Implementation Method 1
a first elastic member disposed between the support member and the first mounting member, and a second elastic member disposed between the first mounting member and the case
Implementation Method 2
each elastic assembly may include a first mounting member disposed between the support member and the case, a first elastic member disposed between the support member and the first mounting member
Data Source
AI summary
A reciprocating compressor is provided. The reciprocating compressor according to an aspect of the present disclosure comprises a case, a drive motor disposed in the case, a rotating shaft rotatably connected to the drive motor, a compression mechanism configured to compress a refrigerant by the rotating shaft, a plurality of support members configured to support the compression mechanism, and a plurality of elastic assemblies, each of which is disposed between each of the plurality of support members and the case. In this case, the elastic assembly includes a first mounting member disposed between the support member and the case, a first elastic member disposed between the support member and the first mounting member, and a second elastic member disposed between the first mounting member and the case. Through this, the present disclosure can reduce a vertical vibration compared to using a single spring.