Ventilated Facade Bracket with Inclined Wing and Slotted Profile

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Solution Overview

Problem

Current ventilated facade systems require thick insulating layers and bulky brackets, leading to significant heat transmission and space management issues, with limited horizontal adjustment and no thermal cutting or gasket isolation, and risk of cladding panel displacement during screw failure.

Innovation Solution

The system employs L-shaped wall fixing brackets with slotted holes and inclined second wings, vacuum insulating panels protected by wood fiber layers, aluminum profiles with longitudinal slits, and metal supporting clamping means with EPDM gaskets to create a ventilated air gap with reduced thickness, allowing for fine horizontal adjustment and thermal bridge prevention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional insulating layers are used to achieve sufficient insulation capacity, then thermal insulation performance is improved, but the thickness of the insulating package increases considerably

Engineering Contradiction:
Improvethermal insulation performanceVSAvoidthickness of insulating package
Core Design Contradiction:
TemperatureVSLength of stationary object

Solution Approach 1:

The patent changes the physical state of the insulating material from solid (traditional insulating layers) to vacuum (vacuum insulating panels), fundamentally altering the insulation mechanism from thermal conduction through material to thermal conduction through absence of material, achieving superior insulation with reduced thickness

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite construction by combining vacuum insulating panels with protective cladding layers (rear cladding and front cladding) to create a multi-layer insulating package that maintains vacuum integrity while providing mechanical protection and thermal insulation

Inventive Principle:
Principle #40Composite materials

2Temperature

If thicker insulating packages are used to maintain insulation capacity, then thermal performance is improved, but the overall thickness of the ventilated wall increases

Engineering Contradiction:
Improvethermal performanceVSAvoidoverall thickness of ventilated wall
Core Design Contradiction:
TemperatureVSLength of stationary object

Solution Approach 1:

The patent transitions from conventional solid insulation materials to vacuum-based insulation, changing the physical parameter of the insulating medium to achieve higher insulation efficiency per unit thickness, thereby reducing the overall wall thickness while maintaining or improving thermal performance

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If bulky brackets are used to support the cladding system, then structural stability is improved, but heat transmission through the brackets increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidheat transmission
Core Design Contradiction:
Stability of the object's compositionVSTemperature

Solution Approach 1:

The bracket system is segmented into multiple components including wall fixing brackets, aluminum profiles with longitudinal slits, and supporting clamping means, allowing for distributed thermal breaking and reduced heat transmission paths while maintaining structural stability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces EPDM gaskets as intermediary sealing elements between the cladding panels and the bracket system, which provide thermal isolation and prevent direct thermal contact while maintaining the structural connection

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of manufacture

If traditional fixing systems without gaskets are used, then installation simplicity is improved, but protection of cladding panels from friction and displacement is insufficient

Engineering Contradiction:
Improveinstallation simplicityVSAvoidprotection of cladding panels
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent introduces EPDM gaskets as intermediary elements between the cladding panels and the fixing system, providing both sealing and friction-based protection against panel displacement while maintaining the simplicity of the overall fixing mechanism

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The gaskets are installed beforehand to cushion and protect the cladding panels from direct friction with metal components and from displacement in case of screw failure, providing preventive protection without complicating the installation process

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

5Ease of operation

If L-shaped brackets perpendicular to the wall surface are used, then ease of installation is improved, but horizontal adjustment capability and thermal cutting are limited

Engineering Contradiction:
Improveease of installationVSAvoidhorizontal adjustment capability
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The bracket system incorporates adjustable elements including slotted holes in the aluminum profiles and longitudinal slits that allow for fine horizontal adjustment of the cladding panels while maintaining the basic L-shaped bracket configuration for ease of installation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The bracket system is divided into modular components with adjustable connections, allowing for thermal cutting and horizontal adjustment capabilities while preserving the simplicity of the overall installation process

Inventive Principle:
Principle #1Segmentation

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 reduces the overall thickness of the ventilated facade, prevents thermal bridging, and ensures secure fixation and protection of the insulating panels, enabling their use in space-critical areas while maintaining the integrity and thermal performance of the insulation.

Implementation Method 1

each insulating sandwich panel V comprises a vacuum insulating panel 3

Methodology Applied
Scientific EffectVacuum insulation: Vacuum

Implementation Method 2

the movement of the air in the gap contributes to drying any water infiltrations and to remove the heat accumulated by solar radiation in the cladding layer, improving also the thermal insulation of the wall during the winter period

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 3

the natural circulation of the air in the space of the gap is obtained, due to the convective motion produced by the presence of openings arranged at the base and at the top of the facade

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 4

the gap between the cladding and the wall is designed in such a way that the air present therein can flow naturally and/or artificially by chimney effect

Methodology Applied
Scientific EffectChimney effect: Free Convection

Implementation Method 5

a plurality of pairs of EPDM plug gaskets 10, wherein: each gasket 10 of said pair of plug gaskets is engaged by means of form / force / snap fitting with respect to a corresponding pair of continuous linear retaining protrusions 13.4

Methodology Applied
Scientific EffectSealing: Adhesive

Data Source

PatentEP4253687B1System for insulating and dry cladding with limited thickness of the perimeter, with ventilated air gap, of a building wall
Publication Date: 2025.01.01 EV SERVICES SRL
  • EP4253687B1 patent drawingFigure 1
  • EP4253687B1 patent drawingFigure 2
  • EP4253687B1 patent drawingFigure 3

AI summary

System (S, S1) for insulating and dry cladding with limited thickness of the perimeter, with ventilated air gap, of a building wall (P), characterized in that it comprises: - a plurality of wall fixing brackets (14), wherein each bracket (14) is configured as an L-shaped plate and comprises: - a first wing (14.1) resting against a surface of said wall (P), having a plurality of holes, preferably slotted holes, and fixed securely in said wall (P) by means of a plurality of wall plugs (1) engaged in respective holes of said first wing (14. 1); - a second wing (14.2) arranged in a vertical plane, orthogonal with respect to said surface of said wall (P), projecting frontally with respect to said first wing (14.1) and having a plurality of slotted holes, the major axis of which is inclined with a descending trend from the outside towards the inside of said wall (P); - a plurality of aluminium profiles (13), extending vertically, or - a plurality of aluminium profiles (23), extending horizontally, wherein: - each aluminium profile (13, 23) comprises: - a first longitudinal box-shaped body (13.1, 23.1); - a second longitudinal box-shaped body (13.2, 23.2) aligned with respect to said first body (13.1, 23.1) according to a reference plane parallel to the front face of said wall (P); - an integral longitudinal intermediate rib (13.3, 23.3) joining said two box-shaped bodies (13.1, 13.2; 23.1, 23.2) and which is arranged parallel to said reference plane and is opposite respective continuous longitudinal intermediate slits, a rear intermediate slit and a front intermediate slit (13.30), respectively, and - pairs of continuous linear protrusions (13.4, 23.4) provided respectively on the external front faces of said two box-shaped bodies (13.1, 13.2; 23.1, 23.2); and wherein: - each aluminium profile (13, 23) is fixed with respect to at least two brackets (14) and supports supporting means (11), or joining means (24), configured for fixing a plurality of external finishing panels (7).