Drying unit

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Solution Overview

Problem

Existing drying solutions for domestic and hospitality environments are either too bulky or inefficient, causing spatial obstruction and resulting in garments that are difficult to iron due to wrinkles.

Innovation Solution

A drying unit that integrates with or is associated with a containment cabin, such as a shower cabin, using hot air generation means and interfacing elements to efficiently dry objects while minimizing spatial requirements, featuring a heat pump, ozone generator, and user-controlled interface for versatile operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a spinning drum dryer is used for drying garments, then the drying function is achieved, but the spatial obstruction is large and garments become wrinkled and difficult to iron

Engineering Contradiction:
Improvedrying functionVSAvoidspatial obstruction
Core Design Contradiction:
Ease of manufactureVSArea of stationary object

Solution Approach 1:

The patent combines the shower cabin and drying unit into a single integrated system. The shower cabin structure serves dual purposes: as a bathing enclosure and as a drying chamber. The hot air generation means are integrated within the shower cabin, eliminating the need for a separate standalone dryer and reducing spatial requirements in the bathroom.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shower cabin is designed to perform multiple functions: bathing/showering and garment drying. The same enclosed space and structural elements (walls, door, floor drain) serve both purposes. The hot air generation system and air circulation mechanisms are utilized for both drying garments and potentially for heating the bathroom space.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If a spinning drum dryer is used, then garments are dried, but they develop wrinkles that are difficult to remove

Engineering Contradiction:
Improvedrying speedVSAvoidironing difficulty
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

Instead of using mechanical tumbling action that creases fabrics, the patent employs a stationary hanging drying method. Garments are suspended on hangers within the shower cabin, allowing hot air to circulate around them without mechanical disturbance. This inverted approach—replacing mechanical motion with stationary thermal processing—eliminates wrinkle formation while maintaining drying effectiveness.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent replaces the mechanical tumbling system of traditional dryers with a thermal convection system. Hot air is generated and circulated through the cabin to transfer moisture from garments to the air, which is then extracted. This substitution of mechanical action with thermal-mass transfer processes achieves drying without the mechanical stress that causes wrinkling.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If industrial drying apparatuses with treatment chambers are used, then efficient drying is achieved, but the system is too complex for domestic use

Engineering Contradiction:
Improvedrying efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts only the essential drying function from complex industrial systems and adapts it for domestic use. Instead of implementing full industrial treatment chambers with multiple nozzles and complex vaporization systems, the invention uses a simplified hot air generation means integrated into the shower cabin, retaining core drying functionality while eliminating unnecessary complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system utilizes the existing shower cabin infrastructure (enclosed space, drainage, electrical connections) to provide drying functionality. The hot air generation means draws power from standard domestic electrical outlets, and the extracted moist air is vented through the existing bathroom ventilation system or floor drain, eliminating the need for separate complex extraction and ventilation systems.

Inventive Principle:
Principle #25Self-service

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

Enables efficient, quick drying with reduced spatial obstruction, eliminates wrinkles, and provides sanitization and scenting capabilities, ensuring garments are dried and sanitized without creasing.

Implementation Method 1

hot air generation means, comprising a heat pump

Methodology Applied
Scientific EffectHeat pump: Heat Exchanger

Implementation Method 2

those interfacing means being adapted to conduct the hot air generated by the hot air generation means into the containment cabin

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 3

performing the drying process on objects in an efficient, quick manner

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3399092B1Drying unit
Publication Date: 2020.02.12 DIMORE DI LUCIA VALZELLI
  • EP3399092B1 patent drawingFigure 1
  • EP3399092B1 patent drawingFigure 2A
  • EP3399092B1 patent drawingFigure 2B

AI summary

A drying unit (1), which can be easily associated with a domestic and/or hospitality containment cabin (4), comprises hot air generation means (2). Conveniently, the drying unit (1) comprises interfacing means with the containment cabin (4), those interfacing means being adapted to conduct the hot air generated by the hot air generation means (2) into the containment cabin (4), such a drying unit (1) being adapted to be associated with the containment cabin (4) in order to dry objects contained therein.