Dispenser Pump Housing with Movable Partition for Volume Control
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Solution Overview
Problem
Existing dispenser pumps require differently designed housings to dispense varying amounts of fluid, leading to increased production costs for a series of similar dispensers adapted to different output amounts.
Innovation Solution
A pump housing arrangement with a flexible wall part and a blocking element that can be moved between a blocking position and an operating position, allowing the effective volume of the chamber to be adjusted, thereby controlling the amount of fluid dispensed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If differently designed housings are used to dispense varying amounts of fluid, then the fluid dispensing amount is adjusted, but the production costs increase
Solution Approach 1:
The patent applies the dynamics principle by making the chamber volume adjustable through a movable partition wall that can be positioned at different locations along the chamber axis. This allows a single pump housing to dynamically change its effective chamber volume to dispense different amounts of fluid, eliminating the need for multiple statically designed housings for different dispensing volumes.
Solution Approach 2:
The patent implements parameter changes by modifying the chamber volume parameter through the movable partition wall. By changing the position of the partition wall, the effective chamber volume is adjusted, which directly controls the fluid dispensing amount. This parameter adjustment mechanism allows one housing design to achieve multiple dispensing configurations without requiring different housing designs.
2Quantity of substance
If the chamber volume is increased to dispense larger amounts of fluid, then the fluid dispensing amount increases, but the piston stroke length must be increased
Solution Approach 1:
The patent applies segmentation by dividing the chamber into multiple segments using a movable partition wall. Instead of using one large chamber requiring a long piston stroke, the chamber is segmented into smaller sections. The partition wall can be positioned to include one or more segments in the effective chamber volume, allowing larger fluid amounts to be dispensed by including multiple segments rather than increasing the piston stroke length.
Solution Approach 2:
The patent implements the nested doll principle by placing the movable partition wall and its associated mechanism within the existing chamber space. The partition wall can be moved to include or exclude different chamber segments, effectively nesting the volume adjustment mechanism within the existing housing structure without requiring external extensions or increased overall dimensions.
3Quantity of substance
If the chamber volume is decreased to dispense smaller amounts of fluid, then the fluid dispensing amount decreases, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing the movable partition wall mechanism to serve multiple functions: it acts as a volume divider, a flow barrier, and a positioning element. This single multi-functional component enables the chamber to be configured for different dispensing volumes without requiring separate complex mechanisms for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The movable partition wall serves as an intermediary element between the fluid source and the dispensing mechanism. By introducing this intermediate component, the system can control fluid volume and flow path without requiring complex direct control mechanisms between the piston and fluid outlet, thus managing device complexity while achieving precise volume control.
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
Enables easy adjustment of the fluid dispensing amount between larger and smaller quantities without changing the piston stroke or housing design, reducing production costs by allowing the same manufacturing parts to be used for dispensers with different output amounts.
Implementation Method 1
the chamber comprises a flexible wall part adapted to be expanded outwards with respect to the inside volume of the chamber at an increasing inside pressure of the chamber
Data Source
Figure 1
Figure 2~5
AI summary
Pump housing arrangement and use of a dispenser pump It is provided a pump housing arrangement (34), comprising a chamber (24), an inlet channel (26), an outlet channel (30) and a movable piston (18), wherein the chamber (24) comprises a flexible wall part adapted to be expanded outwards with respect to the inside volume (22) of the chamber (24) at an increasing inside pressure of the chamber (24), and a blocking element (36) relative moveable with respect to the chamber (24) between a blocking position and an operating position is provided, wherein the blocking element (36) blocks an expansion of the wall part in the blocking position and enables the expansion of the wall part in the operating position. Since the blocking element (36) easily allows an adjustment of the amount of the fluid to be dispensed during the manufacture of the dispenser pump (10), while the manufacturing parts for a series of similar dispenser pumps (10) remains mainly identical, reduced productions costs for a series of similar dispensers adapted to different output amounts are enabled.