Liquid Sample Dispenser With Independent Pumps for Microliter Dosing
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Solution Overview
Problem
Automatic dispensers lack the capability to accurately dispense small volumes of paint samples and bases into small-volume receptacles, due to limitations in dispensing resolution, size, and functionality, requiring external computers and consuming high energy.
Innovation Solution
A compact, autonomous dispensing system with independently-driven hydraulic circuits and touch-sensitive interface, utilizing multiple pumps and a unique nozzle geometry for precise dispensing of small volumes, eliminating the need for external computers and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional automatic dispensers are used, then productivity and reliability are improved, but dispensing precision for small volumes deteriorates
Solution Approach 1:
The dispensing system is segmented into multiple independently controllable pumps, each capable of precise volume control. This allows the system to maintain high productivity through parallel dispensing while achieving microliter-scale precision for small volumes through individual pump control.
Solution Approach 2:
The system employs dynamic control of pump operations, adjusting dispensing parameters in real-time based on the specific volume requirements. This enables the system to switch between high-speed dispensing for large volumes and high-precision dispensing for small volumes, resolving the contradiction between productivity and measurement precision.
2Adaptability or versatility
If traditional automatic dispensers are used, then dispensing capability is improved, but device size deteriorates
Solution Approach 1:
Multiple functional components are merged into a compact integrated system. The pumps, control unit, and user interface are combined in a space-efficient arrangement that maintains full dispensing functionality while reducing the overall machine size to fit on standard countertops.
Solution Approach 2:
The system employs a nested arrangement where smaller components are housed within larger structural elements. The independently-driven hydraulic circuits are nested within a compact frame, allowing multiple dispensing functions to coexist in a reduced footprint.
3Extent of automation
If traditional automatic dispensers are used, then automation is improved, but ease of operation deteriorates
Solution Approach 1:
The system provides self-service capabilities through automatic recipe selection and execution. Users simply input basic parameters, and the system automatically manages the complex dispensing sequences, eliminating the need for manual intervention in the automated process while maintaining operational simplicity.
Solution Approach 2:
The control unit incorporates feedback mechanisms that monitor dispensing progress and automatically adjust parameters. This feedback loop simplifies operation by eliminating the need for users to manually track or adjust complex dispensing parameters, making the automated system easier to operate.
4Productivity
If traditional automatic dispensers are used, then dispensing capability is improved, but energy consumption deteriorates
Solution Approach 1:
The system employs periodic dispensing cycles with optimized timing, where pumps operate only when needed rather than continuously. This periodic operation maintains high productivity through efficient batch processing while significantly reducing overall energy consumption compared to continuous operation systems.
Solution Approach 2:
The system dynamically changes operational parameters including pump speed and pressure levels based on the specific dispensing requirements. By adjusting parameters to match actual needs rather than operating at constant high levels, the system maintains productivity while reducing energy consumption.
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 precise dispensing of volumes under 0.01 ml with reduced size and energy consumption, allowing for easy placement and operation, and facilitates homogenization of paint samples by dispensing components in the correct proportions.
Implementation Method 1
Positive displacement pumps are mainly applied in these dispensers, which dispense the same quantity per cycle or revolution. This pump, also called BCP, is classified as a positive displacement pump (also called volumetric).
Data Source
AI summary
Automatic system for precisely dispensing small quantities of colorings with individual pumping for each receptacle (canisters). Each canister (6) has a stirring blade (2). Fastened to the bottom (6) is a corrugated tube (41), the inlet channel for the pump (50). A spider connects the shafts of the blade (2) and is driven in rotation by a direct-current motor (43). Several pumps (50) connect to hoses (42) leading to the dispensing nozzles (8). Each nozzle (8) has staggered holes for the interference fitting of the dispensing hoses (42). A semi-circular movement mechanism comprises four arms (12 and 13) that articulate side supports (9 and 11) and move a receptacle support (44). An electronic circuit board (51) has a customizable resolution for each pump, precisely adjusting the dispensed fluid. An electronic processing and communication device provides the human-machine interface.