Compound Dispenser Control for Interrupted Dose Resumption
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Solution Overview
Problem
Existing dispensers are unable to resume interrupted applications with the correct amount of compound, leading to chemical wastage and user dissatisfaction due to battery depletion, mortar shortage, or user interaction.
Innovation Solution
A dispenser with a control unit that calculates and dispenses the missing amount of compound after an interrupted application run, using a memory module to store and update the missing amount, and an indicator to signal completion, allowing seamless continuation without additional waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dispenser dispenses the preselected amount of compound for one application run, then the dosing is simple and repeatable, but the application cannot be resumed after interruption leading to compound wastage
Solution Approach 1:
The control unit stores the preselected amount of compound to be dispensed before the application run starts. When an interruption occurs, this stored information is retrieved to calculate the missing amount, allowing the application to be resumed without wasting compound.
Solution Approach 2:
The control unit continuously monitors the dispensing process and detects when an application run is interrupted. Based on this feedback, it calculates the missing amount by comparing the preselected amount with the already dispensed amount, and adjusts the subsequent dispensing to deliver only the missing amount.
2Reliability
If the dispenser tracks the already dispensed amount to enable resumption, then the application can be completed accurately after interruption, but the device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it controls the motor, stores the preselected amount, detects interruptions, calculates the missing amount, and controls the indication. This multi-functionality avoids adding separate dedicated components for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The control unit automatically calculates the missing amount and manages the resumption process without requiring user intervention or estimation. The system self-monitors the dispensing status and self-adjusts to deliver the correct missing amount, reducing the need for complex external control mechanisms.
3Loss of information
If the dispenser provides real-time information of dispensed amount, then the user can track application progress, but the device complexity and cost increase
Solution Approach 1:
The patent extracts only the essential information needed for application resumption (the missing amount) and presents it to the user via a simple indication. This avoids implementing complex real-time monitoring displays while still providing the necessary information for the user to understand the application status.
Data Source
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AI summary
The present invention provides a dispenser for compound-containing containers, comprising: a receiving chamber for a container; at least one push rod displaceable relative to the receiving chamber; a motor for moving the at least one push rod; a control unit for controlling the motor; a main switch; an operation selection switch for setting a selected amount of the compound to be dispensed in one application run, a sensor configured to detect the moving of the push rod, the control unit being configured to store a missing amount of the compound when one application run is interrupted, said missing amount of the compound being the difference value of the selected amount and an already dispensed amount of the compound in the interrupted application run, wherein the dispenser dispenses the missing amount of the compound when the main switch is actuated for finishing the interrupted application. Such a dispenser will be able to fulfil an interrupted application with the correct amount of the compound. If an application run gets interrupted, for example, due to the empty battery, not the preselected amount of the compound will be dispensed, but the missing amount of the compound. With this function, the user will be able to proceed the application without additional chemical or compound wastage.