Microbubble Air Suction Structure to Prevent Port Wetting
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Solution Overview
Problem
Existing microbubble devices suffer from liquid adherence and leakage at air suction holes, leading to unstable bubble generation due to the viscosity of the liquid and the arrangement of air suction holes in the side wall of Venturi pipes, which affects air suction stability.
Innovation Solution
An air suction protection structure comprising a first throat pipe with a conical opening, a second throat pipe with a protection area on its inner wall to prevent liquid contact, and an air suction pipe connected to the protection area, enhancing flow speed and preventing liquid adherence to the air suction port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air suction hole is arranged in the side wall of Venturi pipe, then air suction function is achieved, but liquid adheres to air suction hole causing unstable bubble generation
Solution Approach 1:
The patent introduces a protective structure (intermediary element) between the liquid flow and the air suction hole. This protective structure prevents direct contact between liquid and the air suction hole, eliminating the harmful liquid adherence effect while maintaining the air suction function. The intermediary structure acts as a barrier that allows air to be suctioned without liquid contamination.
Solution Approach 2:
The patent applies a protective coating or treatment specifically to the air suction hole area, creating a local quality change. This protective layer has different properties (hydrophobic or non-stick characteristics) compared to the rest of the pipe surface, preventing liquid adherence at the critical air suction location while maintaining normal liquid flow elsewhere.
2Productivity
If liquid flows through air suction hole at high speed, then air suction efficiency is improved, but liquid seeps out from air suction hole causing failure of bubble generation
Solution Approach 1:
The protective structure serves as an intermediary barrier that allows high-speed liquid flow to pass while blocking liquid from entering the air suction hole. This maintains the high air suction efficiency driven by the fast liquid flow while preventing liquid seepage that would cause bubble generation failure.
Solution Approach 2:
The patent employs a thin protective film or shell structure at the air suction hole. This thin film is flexible enough to allow air passage and withstand the high-speed liquid flow, yet sufficiently barrier-like to prevent liquid seepage into the air suction hole, thus maintaining both productivity and reliability.
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 structure stabilizes bubble generation by preventing liquid from adhering to the air suction port, ensuring consistent air suction and efficient bubble production.
Implementation Method 1
a first throat pipe provided with a conical opening, wherein the conical opening is arranged to allow a liquid flow to enter the first throat pipe from the conical opening, and to increase a flow speed of the liquid flow after the liquid flow passes through the conical opening
Implementation Method 2
a protection area is arranged on an inner wall of the second throat pipe, and the protection area is arranged to prevent the liquid flow from contacting with an inner wall surface of the second throat pipe within the protection area
Data Source
AI summary
An air suction protection structure for a microbubble device includes a first throat pipe, a second throat pipe and an air suction pipe. The first throat pipe is provided with a conical opening from which a liquid flow enters the first throat pipe. The liquid flow increases its flow speed after passing through the conical opening. The second throat pipe is communicated with the first throat pipe and located downstream of the first throat pipe, a protection area is arranged on an inner wall of the second throat pipe, and the liquid flow does not contact with an inner wall surface of the second throat pipe within a range of the protection area when passing through the protection area. Meanwhile, the air suction pipe is communicated with the second throat pipe, the air suction pipe is provided with an air suction port connected to the protection area.