Microbubble generator, washing machine, and home appliance
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Solution Overview
Problem
Conventional microbubble generators have low productivity due to time-consuming and labor-intensive assembly, limited microbubble generation concentration, and inefficient generation efficiency, primarily because they rely on dissolved air in water and require multiple small external screw members for assembly.
Innovation Solution
A microbubble generator design featuring a flow path with a decompression member and an outside air introduction port, which increases microbubble generation by introducing outside air and simplifies assembly through a divided structure that can be mass-produced using injection molding, reducing labor and time required for assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple small external screw members are attached to form the flow path, then the microbubble generator can be assembled, but assembly and adjustment require time and labor resulting in low productivity
Solution Approach 1:
The patent merges multiple separate screw members and flow path components into a single integrated flow path member that is formed by injection molding. This eliminates the need for assembling multiple small parts with screws, thereby significantly reducing assembly time and labor while improving productivity.
Solution Approach 2:
The patent replaces the mechanical assembly system (multiple screw members connected by bolts) with a molded integration system. The flow path member is created as a single piece through injection molding, substituting mechanical fastening with a molded structural integration.
2Device complexity
If only dissolved air in water is used as raw material for microbubbles, then the system is simple, but the generation concentration of microbubbles is limited
Solution Approach 1:
The patent introduces outside air into the flow path before the microbubble generation section through a preliminarily formed air introduction hole. This preliminary introduction of air ensures that sufficient air is available for microbubble generation, increasing the generation concentration without significantly increasing system complexity.
Solution Approach 2:
The patent uses an air introduction hole that allows outside air to enter the flow path. This creates a porous-like structure that facilitates air intake from the external environment, providing additional air supply for microbubble generation beyond what is dissolved in the water.
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 design enhances microbubble generation efficiency and concentration by utilizing both dissolved air and outside air, improving productivity and reducing assembly complexity, allowing for a higher volume of microbubbles to be generated efficiently.
Implementation Method 1
a microbubble generator in which so-called Venturi effect of fluid dynamics is utilized. In this microbubble generator, a cross-sectional area of a flow path through which a liquid such as water flows is locally reduced to rapidly decompress the liquid that passes through the flow path, so that dissolved air in the liquid can be precipitated to generate the microbubbles
Implementation Method 2
an outside air introduction port provided in the flow path constituting section to introduce outside air, and an outside air introduction path communicating between the outside air introduction port and the outlet
Data Source
AI summary
A microbubble generator is formed from at least two of a flow path constituting section that constitutes a flow path through which a liquid is passable, and a decompression member including a colliding section that is fitted into the flow path constituting section and locally reduces a cross-sectional area of the flow path to generate microbubbles in the liquid that passes through the flow path. This microbubble generator includes an outlet connecting to a negative pressure producing section of the decompression member, an outside air introduction port provided in the flow path constituting section to introduce outside air, and an outside air introduction path communicating between the outside air introduction port and the outlet.