Air-conditioning panel

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Solution Overview

Problem

Existing absorption type refrigeration panels face challenges in area occupancy and performance when used as building materials, particularly when solar heat is used as an energy source, as they struggle to efficiently dispose of condensation heat and maintain sufficient air-conditioning effects.

Innovation Solution

An air-conditioning panel is designed with a regenerative absorber and condenser on one surface side exposed to sunlight, and an evaporator on the opposite side, with specific surface treatments to enhance solar absorptivity, far-infrared emissivity, and solar reflectance, allowing for efficient regeneration and absorption processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the condenser is provided on the other surface side as in the case of the evaporator, then the area of the evaporator is reduced, but condensation heat is discarded indoors

Engineering Contradiction:
Improveevaporator areaVSAvoidcondensation heat discard indoors
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent applies dimensional change by moving the condenser from the indoor surface to the outdoor surface of the panel, utilizing the external space dimension. This spatial reconfiguration allows the condenser to be positioned on the sunlight-exposed outer surface, enabling condensation heat to be discharged outdoors rather than indoors, while preserving the evaporator area on the indoor surface.

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

Solution Approach 2:

The patent extracts the condenser from the indoor environment and positions it on the outdoor surface of the panel. This separation removes the harmful effect of indoor heat discard by relocating the heat-generating component to the external environment where heat can be effectively dissipated.

Inventive Principle:
Principle #2Taking out (Extraction)

2Area of stationary object

If the condenser is provided on the heat collection regenerator side, then the condensation efficiency deteriorates, but area occupancy is improved

Engineering Contradiction:
Improvepanel area utilizationVSAvoidcondensation efficiency
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The patent applies local quality by providing different surface treatments to different portions of the panel. The portion corresponding to the condenser is treated to have high solar reflectance (80% or more), creating a localized property that prevents solar heat from interfering with condensation. This localized treatment ensures high condensation efficiency while utilizing the outdoor surface area effectively.

Inventive Principle:
Principle #3Local quality

3Area of stationary object

If the regenerative absorber and condenser are disposed on one surface side, then area occupancy is improved, but it becomes difficult to dispose condensation heat and maintain sufficient air-conditioning effects

Engineering Contradiction:
Improvepanel area occupancyVSAvoidair-conditioning performance
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The patent utilizes dimensional change by positioning both the regenerative absorber and condenser on the outdoor surface of the panel, while placing the evaporator on the indoor surface. This spatial arrangement across different surfaces and dimensions allows efficient heat management: solar heat is absorbed outdoors, condensation heat is discharged outdoors, and cooling effect is provided indoors, maintaining sufficient air-conditioning performance while improving area occupancy.

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

Solution Approach 2:

The patent applies local quality through differentiated surface treatments on the outdoor surface. The regenerative absorber portion has high solar absorptivity for efficient heat collection, while the condenser portion has high solar reflectance to prevent heat interference with condensation. This localized functional differentiation enables both components to operate efficiently on the same surface, resolving the contradiction between area occupancy and performance.

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

This configuration effectively addresses area occupancy issues and enhances performance by maintaining the evaporator's area and preventing condensation heat from being discarded indoors, while also suppressing deterioration in condensation efficiency.

Implementation Method 1

a regenerative absorber having an absorbent liquid that absorbs a vapor refrigerant or an adsorbent agent that adsorbs the vapor refrigerant

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

an absorbent liquid that absorbs a vapor refrigerant

Methodology Applied
Scientific EffectAbsorption (physical): Absorption (physical)

Implementation Method 3

a condenser configured to liquefy the vapor refrigerant discharged from the regenerative absorber into a liquid refrigerant

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 4

an evaporator configured to evaporate the liquid refrigerant from the condenser

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 5

A first portion on the one surface side of the panel, the first portion corresponding to the regenerative absorber, is subjected to processing so as to have a solar absorptivity of 80% or more

Methodology Applied
Scientific EffectSolar absorption: Absorption (EM radiation)

Implementation Method 6

a far-infrared emissivity of 80% or more

Methodology Applied
Scientific EffectFar-infrared emission: Thermal Radiation

Implementation Method 7

A second portion on the one surface side of the panel, the second portion corresponding to the condenser, is subjected to processing so as to have a solar reflectance of 80% or more

Methodology Applied
Scientific EffectSolar reflection: Reflection

Data Source

PatentUS12287118B2Air-conditioning panel
Publication Date: 2025.04.29 YAZAKI ENERGY SYSTEM CORP
  • US12287118B2 patent drawing
  • US12287118B2 patent drawing
  • US12287118B2 patent drawing

AI summary

An air-conditioning panel includes: a regenerative absorber having an absorbent liquid that absorbs a vapor refrigerant or an adsorbent agent that adsorbs the vapor refrigerant and discharging the vapor refrigerant absorbed by heating with sunlight; a condenser configured to liquefy the vapor refrigerant discharged from the regenerative absorber into a liquid refrigerant; and an evaporator configured to evaporate the liquid refrigerant from the condenser. The regenerative absorber and the condenser are formed on one surface side of the panel exposed to sunlight. The evaporator is formed on the other surface side of the panel. A first portion of the panel corresponding to the regenerative absorber is processed to have a solar absorptivity of 80% or more and a far-infrared emissivity of 80% or more. A second portion of the panel corresponding to the condenser is processed to have a solar reflectance of 80% or more.