Dental Handpiece Atomizer Using Laval Jet Oil Mist Mixing
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Solution Overview
Problem
Existing dental handpiece oiling machines fail to uniformly mix lubricating oil and air, leading to inefficient lubrication, oil wastage, and environmental pollution, particularly when lubricating multiple handpieces.
Innovation Solution
A dental handpiece oiling machine with an atomizer that accelerates gas to form a high-speed flow, atomizing lubricating oil into mist-like particles using a Laval jet tube structure, ensuring uniform lubrication without the need for an oil pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional oil pump and compressed air method is used to deliver lubricating oil to dental handpieces, then oil can be delivered to handpieces, but oil and air cannot be sufficiently mixed resulting in non-uniform oil content in air
Solution Approach 1:
The patent uses compressed air flow through a special structure (contraction section and expanded section) to create negative pressure that sucks oil upward, and the high-speed air flow atomizes the oil into fine droplets. This pneumatic mechanism achieves uniform mixing of oil and air without requiring additional pumps or complex injection systems, resolving the contradiction between oil delivery capability and mixing uniformity.
2Reliability
If oiling time is prolonged to inject more lubricating oil into dental handpieces, then sufficient lubrication can be achieved, but most lubricating oil is discharged into air causing waste and environmental pollution
Solution Approach 1:
The system uses the compressed air flow itself to perform dual functions: creating negative pressure to draw oil upward and providing the high-speed flow that atomizes and carries the oil droplets. This self-service mechanism eliminates the need for prolonged operation or additional oil injection, achieving sufficient lubrication with minimal oil consumption and preventing oil waste and pollution.
3Adaptability or versatility
If traditional multi-way structure with air inlet is used, then air can be introduced to multiple handpieces, but oil and air mixing remains insufficient
Solution Approach 1:
The patent divides the air flow path into distinct functional sections: a contraction section that accelerates air and creates negative pressure, and an expanded section that allows oil to be drawn in and atomized. This segmentation of the flow path enables effective oil-air mixing while maintaining the capability to serve multiple handpieces through the distributed atomization points.
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
Achieves efficient, uniform lubrication of multiple dental handpieces with minimal oil usage, reducing environmental pollution and extending the machine's service life.
Implementation Method 1
a gas acceleration structure configured for sharply accelerating gas coming from the gas delivery circuit to form an accelerated gas flow
Implementation Method 2
an atomization structure configured for atomizing lubricating oil from the lubricating oil delivery circuit under an action of the accelerated gas flow to form oil mist
Implementation Method 3
the lubricating oil is sucked out under the action of a negative pressure generated in an area in the vicinity of a tail end of the oil nozzle
Data Source
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AI summary
A dental handpiece oiling machine comprises a lubricating oil delivery circuit, a gas delivery circuit, and an atomizer. The atomizer is respectively connected to the lubricating oil delivery circuit and the gas delivery circuit and comprises a gas acceleration structure used for sharply accelerating gas from the gas delivery circuit to form a high-speed gas flow and an atomization structure used for atomizing lubricating oil from the lubricating oil delivery circuit under the action of the high-speed gas flow to form oil mist which is delivered to dental handpieces. According to the dental handpiece oiling machine, because lubricating oil is broken into mist-like particles by the high-speed gas flow, oil and gas are sufficiently mixed, sufficient lubrication can be realized merely with a small amount of oil, and environmental pollution is greatly reduced; and an oil pump of an oil supply system is not needed, so the dental handpiece oiling machine has a simple structure and a long service life.