Spring-Mounted Beverage Pump Assembly for Vibration Damping
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Solution Overview
Problem
Vibrations from reciprocating piston pumps in beverage preparation machines negatively affect the quality and operational feel of the devices and other components, as existing solutions like suspension with spaced apart suspenders or elastic supports do not adequately address the issue of vibration transmission.
Innovation Solution
A beverage preparation machine design that incorporates a helicoidal dampening spring to mount the pump, allowing friction-free movements and reducing vibration transmission, combined with a plain bearing to guide the pump's movements and an electric connection using vibration-barrier flexible cables to minimize vibration transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a reciprocating piston pump is mounted directly in the housing, then the structure is simple and assembly is easy, but vibrations are transmitted to other machine parts affecting quality and operational feel
Solution Approach 1:
A dampener comprising a spring is introduced as an intermediary element between the pump and the housing. The spring absorbs and dampens vibrations generated by the reciprocating piston pump, preventing their transmission to other machine parts while maintaining structural simplicity and ease of assembly.
Solution Approach 2:
The dampener is pre-installed on the housing before pump assembly. This beforehand cushioning approach ensures that vibration absorption capability is already in place, allowing the pump to be mounted without worrying about subsequent vibration issues, thus maintaining assembly simplicity while addressing vibration transmission.
2Object-affected harmful factors
If spaced apart suspenders or elastic supports are used to suspend the pump, then vibration transmission is reduced, but the mounting structure becomes more complex
Solution Approach 1:
The dampener is integrated directly onto the housing structure, merging the vibration damping function with the mounting structure. This eliminates the need for separate suspenders or elastic supports, reducing mounting structure complexity while maintaining effective vibration transmission reduction.
Solution Approach 2:
The dampener serves multiple functions: it acts as both a mounting support for the pump and a vibration damping element. This multi-functionality reduces the need for additional components, simplifying the overall mounting structure while effectively addressing vibration transmission issues.
3Object-affected harmful factors
If friction-free movements are allowed for the pump, then vibration reduction is improved, but positioning precision and stability may be compromised
Solution Approach 1:
The spring in the dampener acts as an intermediary that provides friction-free movement capability while simultaneously maintaining pump positioning stability. The spring's elastic properties allow the pump to move freely during operation for vibration reduction, while the spring force continuously maintains proper positioning, preventing excessive displacement.
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 solution effectively reduces vibration transmission to other machine parts, improving the operational feel and quality of beverage preparation, simplifying assembly, and enhancing system reliability and cost-effectiveness by integrating components for automatic assembly.
Implementation Method 1
a dampener for preventing or reducing the transmission of vibrations from the pump to other machine parts. The dampener comprises a spring on which the pump is mounted in the housing, for example a helicoidal dampening spring
Implementation Method 2
The dampener comprises a spring on which the pump is mounted in the housing, for example a helicoidal dampening spring
Data Source
Figure 1
Figure 2
AI summary
A beverage preparation machine comprises: a housing (1000); a pump (800) which vibrates during use and which is mounted in the housing; and a dampener for preventing or reducing the transmission of vibrations from the pump to other machine parts, characterised in that the dampener comprise a spring (850) on which the pump is mounted in the housing.