Sample Temperature Adjustment Device Dew Condensation Prevention

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Solution Overview

Problem

Air cooling systems in sample temperature control devices are prone to dew condensation due to structural limitations and leakage of cold air, which can lead to failures in electronic components and rust in humid environments.

Innovation Solution

A sample temperature adjustment device with a heat transfer plate covering the outer surfaces of the heat insulating layer, heated by a heater to prevent dew condensation, and a control system that adjusts the heater output based on surface and outside air temperatures to maintain a target temperature above the dew point.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heat insulating layer is used to thermally separate the temperature control space from outside air, then temperature control effectiveness is improved, but dew condensation occurs on the outer surface in hot and humid environments

Engineering Contradiction:
Improvetemperature control effectivenessVSAvoiddew condensation
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The invention changes the temperature parameter of the heat insulating layer's outer surface by adding a heater that maintains the surface temperature above the dew point. This parameter change prevents dew condensation while preserving the thermal insulation function, resolving the contradiction between effective temperature control and dew condensation prevention.

Inventive Principle:
Principle #35Parameter changes

2Temperature

If the thickness of the heat insulating material is increased to prevent cold air leakage, then thermal separation is improved, but device size and structural complexity increase

Engineering Contradiction:
Improvethermal separationVSAvoiddevice size
Core Design Contradiction:
TemperatureVSVolume of stationary object

Solution Approach 1:

Instead of increasing the thickness of the heat insulating material, the invention changes the temperature parameter of the insulating layer's outer surface using a heater. This allows effective thermal separation to be maintained with the original insulation thickness, avoiding increases in device size while preventing dew condensation.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If a heater is added to prevent dew condensation, then reliability is improved, but device complexity and energy consumption increase

Engineering Contradiction:
Improvedevice reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention introduces a heater as an intermediary component between the temperature control space and the external environment. This heater acts as a mediator that prevents dew condensation on the heat insulating layer's outer surface, improving reliability while adding only a simple heating function rather than complex systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Effectively prevents dew condensation on the heat insulating surfaces, protecting electronic components and valves from moisture damage, while optimizing heating efficiency with reduced heater output.

Implementation Method 1

a heater that heats the heat transfer plate to prevent dew condensation on a surface of the heat transfer plate

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a cooling part for cooling the temperature control space

Methodology Applied
Scientific EffectHeat transfer: Heat Exchanger

Implementation Method 3

a heat insulating layer enclosing the temperature control space so that the temperature control space is thermally separated from outside air

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS11231399B2Sample temperature adjustment device
Publication Date: 2022.01.25 SHIMADZU CORP
  • US11231399B2 patent drawing
  • US11231399B2 patent drawing

AI summary

A sample temperature adjustment device includes a temperature control space for controlling a temperature of a sample by containing the sample inside, a heat insulating layer enclosing the temperature control space so that the temperature control space is thermally separated from outside air of the sample temperature adjustment device, a cooling part for cooling the temperature control space, a heat transfer plate covering at least a part of outer surfaces of the heat insulating layer, and a heater that heats the heat transfer plate to prevent dew condensation on a surface of the heat transfer plate.