Cosmetic Device Bubble Generator Mixing Mechanism
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Solution Overview
Problem
Conventional cosmetic devices generate uneven-sized bubbles due to inadequate mixing of liquid foaming agents with air, leading to suboptimal cosmetic effects, especially when the foaming agent concentration is high.
Innovation Solution
A cosmetic device equipped with an agitating and mixing mechanism featuring two rotors rotating in opposite directions, along with arms and pillars that enhance agitation, ensures uniform mixing of the liquid foaming agent with air, producing fine and consistent bubbles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple pump structure is used to mix liquid foaming agent with air, then device complexity is reduced, but mixing uniformity deteriorates leading to uneven bubble sizes
Solution Approach 1:
The mixing mechanism is segmented into multiple functional components: a pump body, a rotor with multiple blades, and a stator with guide surfaces. This segmentation allows each component to perform a specific function (liquid intake, air mixing, and flow guidance) that collectively achieves uniform bubble generation without requiring an overly complex integrated structure
Solution Approach 2:
Air is introduced as an intermediary substance between the liquid foaming agent and the bubble generation process. The pump mixes air with the liquid foaming agent in a mixing chamber, creating a uniform mixture that then flows to the bubble generation nozzle. This intermediary mixing step ensures uniform bubble sizes while keeping the overall structure relatively simple
2Quantity of substance
If the concentration of foaming agent in the liquid foaming agent is increased, then cosmetic effect is enhanced, but mixing uniformity with air deteriorates
Solution Approach 1:
Air is pre-introduced into the mixing chamber before the liquid foaming agent reaches the high-concentration zone. The pump structure ensures that air and liquid mix in a controlled sequence, with air bubbles forming first and then being uniformly distributed as the liquid foaming agent is pumped in. This preliminary air introduction prevents poor mixing even when foaming agent concentration is high
Solution Approach 2:
The pump structure creates different local conditions within the mixing chamber: a high-shear zone near the rotor blades for intensive mixing, and a lower-shear zone near the stator for gentle blending. This local variation in mixing intensity ensures uniform distribution of high-concentration foaming agent with air, maintaining bubble size uniformity while allowing high foaming agent content
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 device effectively suppresses bubble size unevenness, generating fine bubbles even with high foaming agent concentrations, thereby enhancing the cosmetic effect on the skin.
Implementation Method 1
the agitating and mixing mechanism mechanically agitates the liquid foaming agent. Thus, the liquid foaming agent and air may be uniformly mixed with each other
Data Source
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AI summary
A cosmetic device (1) includes a bubble generator (120) configured to generate bubbles, a cosmetic unit (110) configured to exert a cosmetic effect on a skin, and a motor (13) configured to drive at least the cosmetic unit (110). The bubble generator (120) includes an agitating and mixing mechanism (130) configured to agitate a liquid foaming agent and mix the agitated liquid foaming agent with air.