Microbubble spray head, microbubble treatment agent box assembly and washing device
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Solution Overview
Problem
Existing micro-bubble spray heads have low efficiency in generating micro-bubbles, leading to poor cleaning and purifying effects in washing apparatuses, as they rely on limited air carried in the water flow, resulting in inadequate detergent dissolution and potential health hazards from residual detergent.
Innovation Solution
A micro-bubble spray head design featuring a spray pipe with a diameter-decreased conical passage and a mixing cavity, including throttling holes and suction ports to create negative pressure, allowing for increased air suction and efficient micro-bubble generation, along with a multi-layer filter screen for enhanced mixing and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional micro-bubble generator with a simple spray pipe is used, then the device structure is simple, but the micro-bubble generation efficiency is low
Solution Approach 1:
The spray pipe is divided into multiple functional sections: a conical passage section with decreasing diameter, a mixing cavity section, and a spray outlet section. This segmentation allows each section to perform a specific function (pressure building, air-water mixing, and micro-bubble generation), thereby improving micro-bubble generation efficiency while maintaining reasonable structural complexity
Solution Approach 2:
The invention transitions from a simple linear spray pipe to a three-dimensional structure with a conical passage and a mixing cavity. The conical passage creates a pressure gradient along the axial direction, while the mixing cavity provides a volumetric space for air-water interaction, adding spatial dimensions to enhance micro-bubble generation
2Ease of manufacture
If a simple spray pipe without conical passage is used, then the device complexity is low, but the detergent dissolution effect is poor
Solution Approach 1:
The conical passage features a continuously varying diameter parameter that decreases from the inlet to the outlet. This parameter change creates a pressure gradient that accelerates water flow and enhances the mixing effect, thereby improving detergent dissolution effectiveness while the conical geometry remains manufacturable using standard machining processes
3Quantity of substance
If limited air carried in water flow is used for micro-bubble generation, then no additional air intake structure is needed, but the micro-bubble quantity is insufficient
Solution Approach 1:
The invention utilizes pneumatic principles by creating a pressure difference between the conical passage and the mixing cavity. The decreasing diameter of the conical passage increases water pressure, which draws air into the mixing cavity through pressure differential. This pneumatic mechanism enables sufficient micro-bubble quantity generation without requiring complex mechanical air intake structures
Solution Approach 2:
The spray head structure itself generates the pressure differential needed for air intake through its conical passage geometry. The water flow through the conical passage automatically creates the suction effect that draws air into the mixing cavity, making the system self-sufficient without requiring external air supply mechanisms
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
Significantly improves micro-bubble generation efficiency, ensuring effective cleaning and purifying capabilities while ensuring reliable operation and efficient detergent dissolution in washing apparatuses.
Implementation Method 1
An at-least-one-stage diameter-decreased conical passage is arranged in the spray pipe in a water flow direction, so as to pressurize a water flow flowing through the at-least-one-stage diameter-decreased conical passage
Implementation Method 2
A throttling hole is arranged at a downstream end of the diameter-decreased conical passage part... the pressurized water flow is rapidly expanded and sprayed into the mixing cavity through the throttling hole and generates a negative pressure in the mixing cavity
Implementation Method 3
The outlet end of the spray pipe and the micro-bubble bubbler are respectively provided with suction ports communicating with each other... outside air can be sucked into the mixing cavity in a large amount through these suction ports by means of the negative pressure
Implementation Method 4
The generated bubble water is then cut and mixed by the micro-bubble bubbler to form micro-bubble water containing a large number of micro-bubbles
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A microbubble spray head (52), a microbubble treatment agent box assembly (53) and a washing device. The washing device comprises the microbubble treatment agent box assembly (53), and the microbubble treatment agent box assembly (53) comprises the microbubble spray head (52). The microbubble spray head (52) comprises a spray pipe (521) and a microbubble bubbler (522) fixed to the outlet end of the spray pipe (521), a diameter-reducing conical channel part (216) and a mixing cavity (219) are provided in the spray pipe (521), at least one stage of diameter-reducing conical channel is provided in the diameter-reducing conical channel part (216) in the water flow direction, a throttling hole (218) is provided in the downstream end of the diameter-reducing conical channel part (216), and the diameter of the throttling hole (218) is smaller than that of the mixing cavity (219), such that water flow is sprayed into the mixing cavity (219) by means of the throttling hole (218), and negative pressure is generated in the mixing cavity (219); and the outlet end (214) of the spray pipe (521) and the microbubble bubbler (522) are respectively provided with air suction ports (215, 222) that are in communication with each other, such that air can be sucked into the mixing cavity (219) by means of the air suction ports (215, 222) by means of negative pressure and is mixed with the water flow to form bubble water, and the bubble water is cut and mixed by means of the microbubble bubbler (522) to form microbubble water.