Fluid Dispenser Head Diversion Means for Axial Refill
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Solution Overview
Problem
The existing fluid dispenser heads require removal and reattachment, which can cause damage and is inconvenient due to the need for precise axial traction and pressure, leading to wear and potential loss of components during the filling process of refillable dispensers.
Innovation Solution
A fluid dispenser head with diversion means that selectively interrupts dispensing communication between the inlet duct and the dispenser orifice, allowing for filling communication with a filling duct that can be pressed against a refillable dispenser's filling valve without removing the pusher from the actuator rod, using a movable member to redirect fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pusher is removed from the actuator rod to access the filling valve, then the refillable dispenser can be filled, but the pusher may be damaged, misplaced, or lost due to improper handling
Solution Approach 1:
The pusher is segmented into two functional parts: a first pusher portion that remains on the actuator rod and a second pusher portion that can be removed to access the filling valve. This allows the filling operation to be performed without completely removing the pusher assembly, thereby preventing damage and loss while still enabling access to the filling mechanism.
2Ease of operation
If the pusher is put back into place on the actuator rod, then the dispenser is reassembled, but unwanted fluid may be dispensed due to depression during reattachment
Solution Approach 1:
The filling valve is activated and fluid transfer is initiated before the second pusher portion is fully reattached to the actuator rod. By performing the filling action in advance, during the removal state when the filling valve is accessible, the system avoids the need to depress the pusher during reattachment, thereby preventing unwanted fluid dispensing while completing the reassembly operation.
3Adaptability or versatility
If the dispenser orifice is pressed against the filling valve, then filling communication is established, but the operation requires great dexterity due to perpendicular axes
Solution Approach 1:
Instead of pressing the dispenser orifice perpendicular to the actuator rod axis, the invention introduces a filling duct that extends axially along the actuator rod. This dimensional change allows the filling valve to be accessed and activated in the same axial direction as the actuator rod movement, eliminating the need for complex perpendicular alignment and greatly simplifying the operation.
4Productivity
If repeated removal and reattachment operations are performed, then the filling process is completed, but wear and fatigue cause pump damage
Solution Approach 1:
The pusher is divided into a permanent first portion that remains on the actuator rod and a removable second portion. This segmentation allows the first portion to stay in place and protect the actuator rod connection, while only the lightweight second portion needs to be removed and reattached. This significantly reduces the mechanical stress and wear on the pump and actuator rod during repeated filling operations, thereby maintaining pump durability while achieving fast filling.
Data Source
AI summary
A fluid dispenser head, such as a pusher, includes an inlet duct, and a dispenser orifice in dispensing communication with the inlet duct. The dispenser head further includes diversion means for selectively interrupting dispensing communication between the inlet duct and the dispenser orifice, and for establishing filling communication with a filling duct formed by the dispenser head and exiting outside the dispenser head.