Push Actuated Double Fluid Dispenser With Integrated Membrane Pump
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Solution Overview
Problem
Conventional push actuated double fluid dispensers are costly to produce and assemble due to their complex design, resulting in bulkiness and high environmental impact, as they often require multiple metal components in plastic housings, making them inefficient for recycling.
Innovation Solution
A compact, economically produced push actuated double fluid dispenser with a dispensing pump device featuring an elastic flexible pump membrane and a separating wall, integrated with a cap part made from multi-material injection-molded thermoplastic polymers, reducing the number of components and assembly complexity, while ensuring accurate fluid dispensing in a predetermined ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional designs with two pump mechanisms and metal components are used, then reliable fluid dispensing is achieved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent combines two separate pump mechanisms into a single integrated pump unit with a common membrane. The membrane is divided into two functional zones that independently control fluid flow from two different containers through a single actuation action, eliminating the need for separate pumps and reducing overall device complexity
Solution Approach 2:
The single pump membrane serves multiple functions: it acts as the driving element for both fluid streams, provides sealing functions, and creates pressure differentials for both containers simultaneously. This multi-functional design reduces the number of components needed while maintaining reliable dispensing of two different fluids
2Reliability
If conventional designs with multiple metal components are used, then valve function is achieved, but recyclability and environmental impact worsen
Solution Approach 1:
The patent changes the material parameter from metal to plastic for valve components. The valve elements are made from plastic materials that match the container material, enabling the entire dispenser to be recycled together. The plastic valves maintain their functional properties while improving environmental sustainability and recyclability
3Reliability
If conventional designs with separate pump mechanisms are used, then fluid control is achieved, but device size and bulkiness increase
Solution Approach 1:
The patent merges two separate pump mechanisms into one compact integrated unit. The single membrane design with two functional zones allows both fluids to be controlled from a centralized location, significantly reducing the overall volume and eliminating the bulkiness associated with dual separate pump systems
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 solution enables reliable and accurate dispensing of two fluids in a compact, cost-effective manner with minimized environmental impact, as it simplifies production and assembly, reduces material usage, and facilitates easier recycling by using integrated multi-material components.
Implementation Method 1
an elastic flexible pump membrane movable by a finger or pressing device from an uncompressed state to a compressed state
Data Source
Figure 1~2
Figure 3
Figure 4a~4c
AI summary
Push actuated double fluid dispenser (1), comprising a container (2) having a first cavity (4a) and a second cavity (4b) separated from the cap first cavity (4a), and a dispensing pump device (6) in a general form of a cap assembled to the container over the first and second cavities, the dispensing pump device comprising a base part (7) and a cap part (8) including a pump mechanism (16) comprising an elastic flexible pump membrane (18) manually movable from an uncompressed state to a compressed state. The pump mechanism (16) further comprises a separating wall (20) extending from an underside of the pump membrane (18) and inserted into a slot in the base part, the separating wall separating a first pump chamber (22a) from a second pump chamber (22b), both first and second pump chambers provided in a volume below the pump membrane (18), the first pump chamber connected fluidically to a first inlet channel (10a) and a first outlet channel (11a), the second pump chamber connected fluidically to a second inlet channel (10b) and second outlet channel (11b), the inlet channels fluidically interconnecting the respective first and second cavities to the respective first and second pump chambers, valves (13) being positioned between the inlet channels and the pump chambers configured to allow fluid flow only in the direction from the cavities to the respective pump chambers, and the outlet channels interconnecting the pump chambers to an outlet nozzle (12) of the dispenser, outlet valves (24a, 24b) being positioned in the outlet channels configured to allow fluid flow only in the direction from the pump chambers to the outlet nozzle.