Upside-Down Sprayer Auxiliary Air Guide for Stable Dispensing
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Solution Overview
Problem
Conventional upside-down sprayers experience issues with air bubbles entering the liquid during inverted operation, leading to unstable flow rates and dispensing interruptions due to air being conducted into the water container through a preset orifice.
Innovation Solution
An auxiliary air conducting device is integrated into the sprayer structure, featuring a groove and projecting tube to divert air bubbles away from the liquid pumping port, ensuring stable dispensing by guiding air bubbles into the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air orifice is provided in the nozzle for pressure equalization during inverted operation, then pressure equalization is achieved, but air bubbles enter the liquid through the orifice and cause unstable flow rates
Solution Approach 1:
The air conducting function is segmented into two separate paths: the original air orifice in the nozzle for pressure equalization, and the auxiliary air conducting device with groove and projecting tube for air bubble removal. This segmentation allows each component to perform its specific function without interference, preventing air bubbles from entering the liquid while maintaining pressure equalization capability
Solution Approach 2:
The auxiliary air conducting device acts as an intermediary structure between the air orifice and the liquid. The groove and projecting tube form a controlled pathway that intercepts air bubbles rising from the air orifice and redirects them into the container, serving as a mediator that prevents harmful air bubbles from contaminating the liquid while allowing necessary air flow for pressure equalization
2Adaptability or versatility
If switching valve is added to enable inverted operation, then inverted dispensing is achieved, but air bubbles are introduced through the inlet port causing flow rate instability
Solution Approach 1:
The auxiliary air conducting device with groove and projecting tube serves as an intermediary mechanism between the air orifice and the liquid inlet port. It intercepts air bubbles that would otherwise be drawn into the liquid through the switching valve during inverted operation, redirecting them safely into the container and maintaining stable liquid flow
Solution Approach 2:
The harmful air bubbles are extracted from the liquid flow path by the auxiliary air conducting device. The groove and projecting tube create a separate extraction pathway that removes air bubbles before they can enter the liquid through the switching valve, allowing the switching valve to maintain its function of enabling inverted operation without compromising flow stability
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 auxiliary air conducting device effectively prevents air bubbles from entering the liquid, improving dispensing stability and preventing interruptions, enhancing the operational reliability of the sprayer.
Implementation Method 1
the auxiliary air conducting device... can effectively guide the air bubbles to be avoided and diverted from the inverted liquid pumping port by the feature of the auxiliary air conducting device
Implementation Method 2
The nozzle has a negative pressure suction chamber communicating with the outlet passageway by means of a flow-through orifice
Implementation Method 3
the dip tube is equipped with a switching valve adjacent to the upper end comprising a valve casing, a valve ball, and an inverted liquid pumping port formed in the valve casing
Data Source
AI summary
Disclosed is an upside-down sprayer with an auxiliary air conducting device for liquid pumping, including a container, a nozzle, and a dip tube equipped with a switching valve near its upper end, which has a valve casing, a valve ball, and an inverted liquid pumping port. An auxiliary air conducting device is disposed adjacent to the switching valve and includes a connection part, a guide seat, and a projecting tube with an opening, wherein the connection part is positioned on the dip tube, the guide seat has a groove, and the projecting tube communicates with the groove. The opening of the projecting tube is offset in the direction of the inverted liquid pumping port, and the height of the opening is not lower than the height of the inverted liquid pumping port when used inverted.