Reagent Storage Chamber Sealing for Stable Analyzer Temperature

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Solution Overview

Problem

In existing automated analyzers, temperature fluctuations occur during the loading and unloading of reagent containers, leading to potential degradation of reagents due to heat inflow and outflow.

Innovation Solution

An automated analyzer with a storage chamber and loader mechanism sealed by elastic bodies to minimize heat exchange during reagent container loading and unloading, using a reagent-container-lid opening and closing device to maintain temperature stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the reagent storage chamber is opened to load/unload reagent containers, then the ease of operation is improved, but temperature stability deteriorates due to heat inflow and outflow

Engineering Contradiction:
Improveease of operationVSAvoidtemperature stability
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

A flexible seal member (rubber or resin) is provided at the opening of the reagent storage chamber. When the loader mechanism is not in use, the seal member elastically closes the opening to prevent heat inflow and outflow. When the loader mechanism enters the opening to load/unload containers, the seal member is pushed aside and automatically returns to its sealed position, maintaining temperature stability while allowing easy operation.

Inventive Principle:
Principle #30Flexible shells and thin films

2Temperature

If the opening is sealed during container loading/unloading, then temperature stability is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improvetemperature stabilityVSAvoidease of operation
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The seal member is designed to automatically open and close based on the presence of the loader mechanism. When the loader enters the opening, the seal member is pushed aside without manual intervention. When the loader leaves, the seal member automatically returns to its sealed position due to its elastic properties, eliminating the need for manual sealing operations.

Inventive Principle:
Principle #25Self-service

3Temperature

If the seal member is always closed, then temperature stability is improved, but the productivity deteriorates due to restricted access

Engineering Contradiction:
Improvetemperature stabilityVSAvoidproductivity
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The seal member transitions from a static closed state to a dynamic system that automatically opens when the loader mechanism enters the opening and automatically closes when the loader leaves. This dynamic behavior maintains temperature stability during storage while enabling rapid access for loading and unloading operations, improving productivity without sacrificing temperature control.

Inventive Principle:
Principle #15Dynamics

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

Reduces temperature variations in reagent containers, preserving reagents for extended periods by minimizing heat inflow and outflow, thus preventing degradation.

Implementation Method 1

the loader mechanism and the storage chamber are closed by an elastic body

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3438670B1Automated analyzer
Publication Date: 2025.12.31 HITACHI HIGH TECH CORP
  • EP3438670B1 patent drawingFigure 1
  • EP3438670B1 patent drawingFigure 2
  • EP3438670B1 patent drawingFigure 3

AI summary

The purpose of the present invention is to prevent the outflow and inflow of heat between the outside and inside of a storage chamber when a container is loaded into the storage chamber from outside and thereby prevent degradation resulting from temperature variation in the liquid stored in the storage chamber. Specifically, an automatic analysis device is provided with a storage chamber for adjusting the temperature of and storing a container in which liquid is stored, an opening provided in a portion of the storage chamber, and a loader mechanism for bringing the container in and out of the storage chamber by moving the container through the opening, and is characterized in that the loader mechanism and storage chamber are closed by an elastic body. In the present invention, attaching a sealing member for sealing to an upper part from among overlapping parts makes it difficult for debris and dust to adhere to the sealing member and makes it possible to maintain the sealed state of a reagent storage chamber over a long period of time.