Hermetic Compressor Suspension Damping Structure for Mobile Applications
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Solution Overview
Problem
Existing suspensions for hermetic reciprocating compressors in mobile applications fail to protect end stops from involuntary sudden movements and do not effectively absorb small vibrations and noises, leading to reduced lifespan and noise amplification.
Innovation Solution
A suspension design with a lower end stop comprising an anchoring structure, a damping structure made from an elastomeric alloy, and an upper cover made from a polymeric alloy, which absorbs shocks and vibrations, preventing contact between end stops and isolating noise, featuring a concentric design with a cylindrical damping structure and a truncated cone upper cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing suspension designs are used, then the structure is simple, but the end stops are not protected from involuntary sudden movements and vibrations are not effectively absorbed
Solution Approach 1:
The lower end stop is divided into three distinct components: an anchoring structure, a damping structure, and an upper cover. This segmentation allows each component to perform its specific function independently while working together to provide comprehensive protection against sudden movements and vibrations.
Solution Approach 2:
The damping structure made from elastomeric alloy is pre-installed between the anchoring structure and upper cover to provide cushioning before any impact occurs. This beforehand cushioning protects the end stops from involuntary sudden movements and absorbs vibrations before they can cause damage.
2Object-affected harmful factors
If conventional suspension structures are used, then the design is straightforward, but small vibrations and noises are not absorbed and are instead amplified
Solution Approach 1:
The damping structure is made from an elastomeric alloy, changing the material parameter from traditional rigid or semi-rigid materials to a viscoelastic material that can effectively absorb small vibrations and dampen noises, preventing their amplification.
Solution Approach 2:
The suspension employs composite materials including elastomeric alloy for the damping structure, polymeric alloy for the upper cover, and metallic alloy for the anchoring structure. This combination of materials provides superior vibration and noise absorption compared to conventional single-material designs.
3Duration of action of stationary object
If existing end stop designs are used, then the assembly is simple, but the end stops can contact each other during sudden movements reducing lifetime
Solution Approach 1:
The damping structure is pre-installed in the lower end stop to provide cushioning before any impact occurs, preventing the upper and lower end stops from contacting each other during sudden movements, thereby extending their lifetime.
Solution Approach 2:
The damping structure is specifically positioned between the anchoring structure and upper cover, providing localized protection exactly where impact forces would occur during sudden movements, rather than requiring complex protection throughout the entire suspension system.
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 suspension effectively absorbs shocks and vibrations, preventing damage from involuntary movements and reducing external noise transmission, ensuring the suspension's reliability and longevity in mobile applications.
Implementation Method 1
a damping structure made from an elastomeric alloy, which absorbs shocks and vibrations, preventing contact between end stops
Implementation Method 2
a damping structure made from an elastomeric alloy, which absorbs shocks and vibrations
Implementation Method 3
at least one intermediate spring and at least one lower end stop... the intermediate spring is disposed between the upper end stop and the lower end stop
Implementation Method 4
the reciprocating movement of the piston, together with the movement of the rotating shaft of the electric engine, eventually generates vibrations and noises
Data Source
AI summary
The present invention relates to a suspension disposed between a compression unit and the hermetic housing of hermetic reciprocating compressors for mobile application, such as, for example, application in automotive vehicles and similar, and to the method of assembly of the components that constitute the referred suspension. According to the present invention, it is disclosed a suspension for hermetic reciprocating compressor for mobile application capable of reducing the effects of an eventual and involuntary sudden movement of the compression unit and also of minimizing the transfer of vibrations and noises deriving from the environment outside the hermetic housing to the compression unit.