Chemical Liquid Dispensing Apparatus Single-Use Compliance

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Solution Overview

Problem

Existing chemical liquid dispensing systems often reuse or continue to use liquid discharging devices intended for single-use, leading to potential contamination and inefficiencies.

Innovation Solution

A chemical liquid dispensing apparatus that includes a discharging device with a record portion that changes state (e.g., opens) after use, indicating its history, preventing further use by controlling the dispensing of chemical liquids based on this state, thereby ensuring single-use compliance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the liquid discharging device is designed for single-use to prevent contamination, then contamination prevention is improved, but device reuse is prevented causing waste and inefficiency

Engineering Contradiction:

Improvecontamination preventionVSAvoiddevice reuse efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system uses a record portion that changes state after use to provide feedback about the device's usage history. The dispensing apparatus reads this state information and automatically controls whether to allow further dispensing operations, preventing both contamination from reuse and waste from unnecessary disposal

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The liquid discharging device includes a self-indicating record portion that automatically changes state after use without requiring external monitoring. The device serves its own identification purpose by physically altering its state, eliminating the need for separate tracking systems

Inventive Principle:

Principle #25Self-service

2Reliability

If the record portion state is changed after use to indicate single-use status, then reuse prevention is improved, but device complexity increases

Engineering Contradiction:

Improvesingle-use complianceVSAvoidrecord portion mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The record portion is designed as a simple, low-cost component that changes state permanently after use. This disposable-like element provides reliable single-use indication without requiring complex mechanisms, accepting that the record portion itself is a simple consumable component

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If manual tracking of device usage is implemented, then reuse prevention is improved, but operational complexity and time consumption increase

Engineering Contradiction:

Improveusage tracking accuracyVSAvoidoperational simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system eliminates manual tracking by having the device itself maintain and indicate its usage state through the record portion. The dispensing apparatus automatically reads this state information, removing the need for human operators to track or remember device usage history

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical tracking systems with an automated reading mechanism. The dispensing apparatus uses optical or electronic sensors to detect the record portion's state, substituting human memory and manual record-keeping with automated detection and control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11511300B2Chemical liquid dispensing apparatus and chemical liquid discharging device

Publication Date: 2022.11.29 RISO TECH CORP

AI summary

A liquid discharging device to be used with a liquid dispensing apparatus includes a discharging portion configured to discharge a liquid based on a control signal from the liquid dispensing apparatus on which the liquid discharging device is mounted, and a sheet material having a characteristic configured to be changed by the liquid dispensing apparatus after a discharge of the liquid by the discharging portion.