Medical Suction Pump Sound Damping Chamber Design
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Solution Overview
Problem
Existing motor-driven medical suction pumps face challenges in achieving a compact design while providing effective sound damping, as they often require complex housing structures and additional sound damping components like hoses, which can compromise manufacturing ease and efficiency.
Innovation Solution
A motor-driven medical suction pump design where the sound damping chamber is directly connected to and encloses the air release or ventilation opening, creating a compact and soundproofed structure with a sound damping housing that effectively dampens noise by ensuring sound enters the chamber directly, rather than escaping through slots or hoses, and is made from materials like ABS plastic for rigidity and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the pump unit housing completely encloses the pump unit to provide soundproofing, then sound damping is improved, but device complexity increases due to multiple housing parts and joints
Solution Approach 1:
The sound damping chamber is integrated directly into the pump unit housing as a unified structure, eliminating the need for separate sound damping components and complex assembly of multiple housing parts. The housing serves dual functions as both structural enclosure and sound damping chamber.
Solution Approach 2:
The sound damping chamber is nested within the pump unit housing structure, with the chamber forming an internal cavity that encloses the air release opening. This nested arrangement provides soundproofing while maintaining a compact overall design.
2Object-affected harmful factors
If air release opening is connected via hose to sound damping chamber, then sound damping is achieved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The sound damping chamber is formed as an integral part of the housing structure through injection molding, eliminating the need for separate hoses and sound damping components. The chamber is directly molded into the housing, simplifying manufacturing to a single molding process.
Solution Approach 2:
The housing material is selected with appropriate acoustic damping properties, and the chamber geometry is optimized through molding parameters to achieve effective sound damping without requiring additional components or assembly steps.
3Volume of moving object
If sound damping chamber is directly connected to air release opening, then device compactness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The sound damping chamber and air release opening are formed as a single integrated molding, eliminating the need for separate connections or assemblies. The direct integration achieves compactness while using standard injection molding tolerances.
Solution Approach 2:
The molding process parameters are optimized to achieve the required precision for the integrated chamber and opening, using material shrinkage compensation and mold design techniques to maintain tight tolerances without requiring post-manufacturing adjustments.
4Reliability
If ventilation opening is connected via ventilation valve to vacuum line, then negative pressure control is improved, but device complexity increases
Solution Approach 1:
The ventilation valve is integrated into the housing structure as a built-in component, eliminating the need for separate ventilation systems. The valve is molded into the housing or mounted as an integrated assembly, reducing overall device complexity while maintaining pressure control functionality.
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
This design achieves significant sound damping with a compact and easy-to-manufacture pump unit, ensuring that the sound emitted is effectively reduced without the need for additional sound damping components, enhancing user experience and operational efficiency.
Implementation Method 1
the sound damping chamber is tightly connected to and encloses the further opening... effectively dampens noise by ensuring sound enters the chamber directly
Data Source
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Figure 5~6
AI summary
The present invention relates to a motor-driven medical suction pump with a pump unit (2) for generating a negative pressure with a housing (40, 42, 44) which accommodates the pump unit (2) therein, wherein the pump unit (2) comprises a vacuum opening (8) for the negative pressure to be generated by the pump unit (2) and at least one further opening (10) communicating with the vacuum opening (8) through the pump unit (2). The present invention indicates a suction pump of the type mentioned above which is easy to produce, compact in design and provided with good sound damping properties and which for this purpose comprises a sound damping chamber (14) which is tightly connected to and encloses the further opening.