Automatic Analyzer Flow Channel Switching for Water Conservation
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Solution Overview
Problem
Automatic analyzers face high water consumption due to constant washing operations, even when probe dispensing is unnecessary, leading to inefficient water use and potential deterioration of analysis performance.
Innovation Solution
An automatic analyzer with a flow channel switching mechanism that returns washing water to a tank when probe washing is not required, optimizing water usage by matching the timing of water supply and return in the analysis cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If washing water is supplied to the washing tank at every cycle regardless of probe dispensing operations, then analysis performance is stabilized through constant piping pressure, but water consumption increases due to unnecessary washing operations
Solution Approach 1:
The system dynamically adjusts the washing operation based on whether probe dispensing was performed. The control unit determines if exterior washing is necessary by checking if the probe inserted into the washing tank had performed dispensing operations, and only supplies washing water when actually needed, making the washing operation adaptive rather than static
Solution Approach 2:
The system changes the operational parameter of washing water supply based on the dispensing history. When no dispensing operations occurred, the washing water supply is stopped or reduced, changing the water flow parameter from constant to conditional supply, thereby reducing water consumption while maintaining analysis performance when needed
2Loss of substance
If washing water supply to the washing tank is controlled based on probe washing necessity, then water consumption is reduced, but analysis performance may deteriorate due to piping pressure fluctuation
Solution Approach 1:
The system implements periodic washing operations synchronized with the analysis cycle. Washing water is supplied in regular periodic intervals corresponding to cycles where probe dispensing occurred, creating a rhythmic pattern of water supply that maintains pressure stability while avoiding continuous unnecessary supply
Solution Approach 2:
The control unit uses feedback from the dispensing operation history to control washing water supply. By monitoring whether dispensing operations were performed and using this information to determine subsequent washing needs, the system creates a closed-loop control that prevents both water waste and pressure instability
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
This approach reduces water consumption without compromising analysis performance by ensuring consistent piping pressure and preventing unnecessary water discharge.
Implementation Method 1
a pump to supply washing water stored in the tank to the washing tank through a first flow channel
Implementation Method 2
a flow channel switching mechanism to switch between supplying washing water to the washing tank through the first flow channel and returning washing water to the tank through a second flow channel connecting the first flow channel and the tank
Data Source
AI summary
An automatic analyzer: includes a washing tank in which an exterior of a probe is washed with washing water, a pump to supply washing water stored in a tank to the washing tank through a first flow channel, and a flow channel switching mechanism to switch between supplying washing water to the washing tank through the first flow channel and returning washing water to the tank through a second flow channel connecting the first flow channel and the tank; and sets a washing period when washing water is supplied to the washing tank through the first flow channel and the probe is washed with washing water in a cycle constituting a sequence of the automatic analyzer; and controls the flow channel switching mechanism so as to return washing water to the tank through the second flow channel during the washing period in a cycle of not washing the probe.