Scroll Compressor Vibration Isolation and Noise Reduction
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Solution Overview
Problem
Scroll pumps generate significant noise and vibrations due to their rotary components, which can lead to reduced performance in nearby equipment and potential damage during transportation.
Innovation Solution
A scroll pump design incorporating a sound-muffling enclosure and a vibration isolation system with elastic vibration isolators, along with a selective locking system, to isolate vibrations and restrict movement independently of the vibration isolation system, allowing for secure operation and transportation without damaging components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a vibration isolation system with elastic vibration isolators is used to isolate the pump head/motor assembly, then noise and vibration transmission is reduced, but the pump head/motor assembly may move excessively during transportation causing component damage
Solution Approach 1:
The system dynamically switches between two states: during operation, the unlockable connector is disengaged allowing the pump head/motor assembly to float on elastic vibration isolators for vibration isolation; during transportation, the connector engages to rigidly connect the assembly to the enclosure, preventing excessive movement and component damage
Solution Approach 2:
The system changes the mechanical coupling parameter between the pump head/motor assembly and the enclosure from flexible (elastic isolators only) to rigid (connector engaged), adapting to different operational requirements and preventing component damage during transportation
2Reliability
If the pump head/motor assembly is rigidly fixed to reduce movement during transportation, then component protection is improved, but noise and vibration transmission during operation increases
Solution Approach 1:
The system uses an unlockable connector that can be engaged or disengaged based on operational mode. During operation, the connector is disengaged to allow the pump head/motor assembly to float on elastic vibration isolators, minimizing noise and vibration transmission. During transportation, the connector is engaged to rigidly secure the assembly, preventing component damage
3Object-affected harmful factors
If a sound-muffling enclosure is added to reduce noise, then noise transmission is reduced, but device complexity increases
Solution Approach 1:
The enclosure serves multiple functions simultaneously: it acts as a sound-muffling chamber to reduce noise transmission, provides structural protection for internal components, and serves as the mounting structure for the vibration isolation system and unlockable connector, eliminating the need for separate protective and structural elements
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 noise and vibration transmission, enabling quiet operation and secure transportation of the scroll pump, while preventing adverse shocks that could damage equipment components.
Implementation Method 1
a vibration isolation system comprising a set of elastic vibration isolators each having top and bottom ends, and in which the pump head/motor assembly is fixed to the vibration isolators at the top ends
Data Source
AI summary
A scroll pump isolates vibrations of a pump head/motor assembly of the pump from the exterior of the pump and thus, suppresses the production of airborne noise. The pump includes a sound-muffling enclosure surrounding the pump head/motor assembly, feet supporting the enclosure, and elastic vibration isolators. The pump head/motor assembly is fixed to the tops of the vibration isolators, and the sound-muffling enclosure is fixed to the vibration isolators at the bottoms of the isolators. The scroll pump also has a locking system by which motion of the pump head/motor assembly relative to the sound-muffling enclosure can be limited or prevented, and by which the sound-muffling enclosure can be hard-mounted to a support surface independently of the feet.