Specimen Chamber Airflow Balancing for Condensation-Free Analysis

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Solution Overview

Problem

Dew condensation on specimen containers in a specimen analysis device leads to variations in light intensity and measurement accuracy, particularly in housing chambers with varying warm air effects, causing inconsistent measurement results.

Innovation Solution

A specimen analysis device with two or more openings for uniform warm air supply to each housing chamber, adjusted by an air volume material to ensure consistent temperature control and prevent dew condensation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If warm air is supplied to prevent dew condensation, then dew condensation is suppressed, but measurement accuracy decreases due to light intensity reduction

Engineering Contradiction:
Improvedew condensationVSAvoidmeasurement accuracy
Core Design Contradiction:
Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

A transparent heater is introduced as an intermediary component between the light source and the specimen container lid. The heater actively warms the lid surface to prevent dew condensation, while its transparency allows observation light to pass through with minimal interference, thus resolving the contradiction between dew condensation prevention and measurement accuracy

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The temperature of the specimen container lid is actively controlled and adjusted to maintain it above the dew point temperature. By dynamically changing the temperature parameter of the lid through the transparent heater, dew condensation is prevented without requiring excessive warming that would interfere with optical observation

Inventive Principle:
Principle #35Parameter changes

2Productivity

If multiple housing chambers are used for specimen observation, then productivity increases, but measurement precision decreases due to varying warm air effects

Engineering Contradiction:
Improveobservation capacityVSAvoidmeasurement consistency
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The housing chamber is divided into multiple independent heating zones, each with its own transparent heater and temperature control mechanism. This segmentation allows each specimen container to receive uniform and independent temperature control, eliminating the varying warm air effects that occur in multi-chamber systems while maintaining high productivity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each housing chamber or specimen container position is equipped with locally-controlled heating elements that provide tailored temperature management. This local quality approach ensures that warm air distribution is optimized for each individual chamber, maintaining measurement consistency across multiple chambers simultaneously

Inventive Principle:
Principle #3Local quality

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

Uniform suppression of dew condensation across multiple housing chambers, maintaining consistent measurement accuracy and reducing errors in specimen analysis.

Implementation Method 1

dew condensation is likely to occur on a boundary surface between the specimen container and a specimen container lid

Methodology Applied
Scientific EffectDew condensation: Condensation

Implementation Method 2

when dew condensation occurs on a transmission member surface such as a lid of a specimen container upper surface that is interposed, refraction of light occurs

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentUS20260086053A1Specimen Analysis Device
Publication Date: 2026.03.26 HITACHI HIGH TECH CORP
  • US20260086053A1 patent drawing
  • US20260086053A1 patent drawing
  • US20260086053A1 patent drawing

AI summary

The purpose of the present invention is to uniformly suppress dew condensation in each housing chamber when multiple housing chambers each house a specimen container. The specimen analysis device according to the present invention comprises two or more openings, wherein warm air is supplied from each of the openings to each housing chamber, and the volume of the air supplied from each of the openings is uniformed by a first air volume adjusting material (see FIG. 2).