Combined Jet and Displacement Suction Device
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Solution Overview
Problem
Current suction devices in medical and industrial applications face challenges such as delayed suction, incomplete liquid removal, high energy consumption, and large size, particularly in dental and medical settings where quick and efficient removal of liquids and particles is necessary.
Innovation Solution
A suction device combining a jet pump or Venturi pump with a displacement pump, connected through a vacuum chamber, allowing for immediate high suction power without the need for complete immersion of the cannula, with a media separation device to manage gas and liquid flows efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a peristaltic pump is used to remove larger particles, then the suction capability for large particles is improved, but the device complexity and size increase
Solution Approach 1:
The suction device is segmented into two functional units: a jet pump for generating high vacuum and an ejector pump for removing large particles. This segmentation allows each unit to specialize in specific tasks, maintaining high productivity while managing device complexity through modular design
Solution Approach 2:
The jet pump serves multiple functions: it generates the primary vacuum, drives the ejector pump, and contributes to particle removal. This multi-functionality reduces the need for additional dedicated components, thereby controlling device complexity while maintaining comprehensive suction capability
2Stress or pressure
If a jet pump is used to generate high vacuum, then the suction pressure is improved, but the liquid accumulation time requirement increases
Solution Approach 1:
The jet pump continuously generates high vacuum pressure in advance, maintaining a ready state that immediately activates when liquid is introduced through the suction cannula. This preliminary action eliminates the need for liquid accumulation time, as the vacuum is already established and ready to suction
Solution Approach 2:
A control unit acts as an intermediary between the jet pump and ejector pump, coordinating their operation to optimize both suction pressure and response time. The control unit ensures the jet pump maintains vacuum readiness while managing the ejector pump's activation for particle removal
3Productivity
If a fan pump is used to achieve high volume flow, then the liquid transport capability is improved, but the device weight and size increase
Solution Approach 1:
The patent replaces the mechanical fan pump system with a jet pump system that uses fluid dynamics (gas flow through nozzles) to generate vacuum and drive liquid transport. This substitution eliminates heavy rotating mechanical components while maintaining high liquid transport capability through pneumatic principles
Solution Approach 2:
The jet pump utilizes pneumatic principles where compressed gas flows through nozzles to create vacuum pressure and drive liquid movement. This pneumatic system achieves high volume flow and liquid transport capability without the mechanical complexity and weight of fan pumps
4Stress or pressure
If a jet pump is used to generate high vacuum, then the suction pressure is improved, but the energy consumption increases
Solution Approach 1:
The jet pump and ejector pump are merged into a coordinated system where the jet pump's gas flow also drives the ejector pump. This merging allows the system to achieve high vacuum pressure while utilizing the same energy input for dual functions, thereby reducing overall energy consumption compared to separate independent systems
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 combined suction units achieve significantly higher flow rates and suction pressures, enabling immediate and complete removal of liquids without backflow, while being compact, energy-efficient, and suitable for retrofitting existing systems.
Implementation Method 1
a first suction unit (1) designed as a jet pump, in particular as a Venturi pump or ejector pump, by means of which a first negative pressure can be implemented in a first connection line (11)
Implementation Method 2
a second suction unit (2) designed as a displacement pump or blower pump, by means of which a second negative pressure can be implemented in a second connection line (21)
Implementation Method 3
a first suction unit (1) designed as a jet pump, in particular as a Venturi pump or ejector pump
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
The suction device provided in particular for medical and industrial applications, which is used to suction fluid and/or solid particles, comprises a first suction unit (1) designed as a jet pump, in particular as a Venturi pump or ejector pump, by means of which a first negative pressure can be achieved in a first connection line (11). According to the invention, a second suction unit (2) is provided as a displacement pump or blower pump, by means of which a second negative pressure can be achieved in a second connection line (21), wherein the first and the second connection line (11, 21) are connected to a suction line (31) directly or via a vacuum chamber (3), and at least one power supply device can be connected or is connected in such a way to the first and the second suction unit (1, 2) that both suction units (1, 2) can be operated together in order to together produce a third negative pressure in the vacuum chamber (3) or the suction line (31).