Nested Adsorption Apparatus for Moisture Removal

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Solution Overview

Problem

Conventional dry air supply devices inadequately remove water vapor due to limited desiccant contact with air, resulting in incomplete moisture removal.

Innovation Solution

An adsorption apparatus with a flow path and adsorbent configuration where the adsorbent is disposed between the container and the flow path, allowing gas to flow through and come into extensive contact with the adsorbent, enhancing adsorption efficiency, and optionally including a filter to capture foreign matter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the desiccant is filled only in the region between the desiccant storage container and the air passing pipe, then the configuration is simple, but water vapor is not sufficiently removed

Engineering Contradiction:
Improveconfiguration simplicityVSAvoidwater vapor removal efficiency
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The air passing pipe is nested inside the desiccant storage container, with the desiccant filling the annular space between them. This nested configuration allows the air to pass through the desiccant material while maintaining a simple overall structure, resolving the contradiction between simplicity and removal efficiency.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The desiccant material is used to fill the space between the air passing pipe and container wall, creating a porous structure that allows air to permeate through it. This porous configuration increases the contact area between air and desiccant, improving water vapor removal while keeping the device compact and simple.

Inventive Principle:
Principle #31Porous materials

2Quantity of substance

If the desiccant is filled only until the air reaches the vicinity of the air passing pipe, then the desiccant quantity is reduced, but water vapor cannot be sufficiently removed

Engineering Contradiction:
Improvedesiccant quantityVSAvoidwater vapor removal efficiency
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

Instead of filling the desiccant only in the radial direction from the container wall, the invention extends the desiccant filling into the axial direction by nesting the air passing pipe inside the container. This dimensional change allows the air to traverse a longer path through the desiccant material, increasing removal efficiency without proportionally increasing desiccant quantity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The air passing pipe is positioned to allow continuous contact with the desiccant material throughout the entire length of the pipe. This continuous configuration ensures that water vapor removal occurs along the entire air path, maximizing efficiency while minimizing the total desiccant quantity required.

Inventive Principle:
Principle #20Continuity of useful action

3Reliability

If the air passing pipe tip is closed with micro pores, then water vapor removal is improved, but the device complexity increases

Engineering Contradiction:
Improvewater vapor removal efficiencyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Instead of closing the pipe tip with micro pores, the invention uses porous desiccant material that fills the space between the pipe and container wall. This approach achieves water vapor removal through the porous structure of the desiccant itself, eliminating the need for additional micro pore structures and reducing device complexity.

Inventive Principle:
Principle #31Porous materials

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

The apparatus effectively adsorbs moisture from air, ensuring complete removal and preventing foreign matter discharge, thereby improving the accuracy of nitrogen oxide concentration measurement in chemiluminescence type nitrogen oxide concentration meters.

Implementation Method 1

an adsorption apparatus that adsorbs a component to be adsorbed contained in gas is utilized by an adsorbent stored therein. When gas flows into the adsorption apparatus, the gas moves in the internal space and comes into contact with the adsorbent, whereby the component to be adsorbed contained in the gas is adsorbed.

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

a filter provided inside the flow path, and foreign matter in the air passing through the flow path is captured by the filter

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS11815433B2Adsorption apparatus and chemiluminescence type nitrogen oxide concentration meter
Publication Date: 2023.11.14 SHIMADZU CORP
  • US11815433B2 patent drawing
  • US11815433B2 patent drawing
  • US11815433B2 patent drawing

AI summary

An inner diameter of an opening of the flow path is larger than a particle diameter of an adsorbent. Therefore, in a state where the flow path 33 is disposed in the container 31, the adsorbent 40 enters the flow path 33 via the opening 33B of the flow path 33. That is, in the adsorption apparatus, the adsorbent is disposed in a region between a side surface portion of the container and the flow path and inside the flow path. Further, in the adsorption apparatus 3, the air flows the region between the container 31 and the flow path 33 and in the flow path 33. Therefore, when the air is flown into the adsorption apparatus 3, the air can be sufficiently brought into contact with the adsorbent 40, and moisture contained in the air can be sufficiently adsorbed.