Bathroom Air Duct Venting for Moisture Drainage and Sterilization

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Solution Overview

Problem

Bathrooms often experience humidity issues leading to mold and bacteria growth, and existing ventilation systems may not adequately dehumidify or sterilize, potentially damaging electrical components within dehumidification apparatuses.

Innovation Solution

A bathroom management apparatus featuring a combined case with intake and discharge vanes, a duct system, blower fan, heater, and ionizers, which includes a filter with a photocatalytic coating for odor removal and a mechanism to direct air flow for efficient dehumidification and sterilization, minimizing moisture exposure to electrical components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a ventilation fan is operated to remove moisture from the bathroom, then air circulation is improved, but moisture may still remain and cause mold and bacteria growth

Engineering Contradiction:
Improvemoisture removal efficiencyVSAvoidprevention of mold and bacteria growth
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent applies parameter changes by using a heater to raise the temperature of air in the bathroom, thereby changing the physical state of moisture from liquid to vapor phase through evaporation. This temperature parameter change enables more effective moisture removal and prevents condensation that would otherwise lead to mold and bacteria growth.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent utilizes phase transitions by heating the air to evaporate liquid moisture into water vapor. The moisture on surfaces and in the air undergoes phase change from liquid to gas, which is then expelled from the bathroom through the ventilation system, effectively preventing mold and bacteria growth.

Inventive Principle:
Principle #36Phase transitions

2Reliability

If dehumidification and sterilization functions are added to the bathroom management apparatus, then hygiene performance is improved, but the complexity of the device increases

Engineering Contradiction:
Improvesterilization capabilityVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into a single integrated apparatus: the ventilation fan for air circulation, the heater for dehumidification, and the ionizer for sterilization are all combined in one bathroom management apparatus. This consolidation achieves comprehensive hygiene performance while avoiding the complexity of multiple separate devices.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The bathroom management apparatus is designed with multi-functionality, serving as a ventilation system, dehumidifier, and sterilization device simultaneously. The single apparatus performs multiple functions that would otherwise require separate equipment, improving hygiene performance without proportionally increasing device complexity.

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

3Reliability

If the bathroom management apparatus operates continuously to maintain dry conditions, then moisture control is improved, but energy consumption increases

Engineering Contradiction:
Improvehumidity controlVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent employs periodic action by operating the ventilation fan and heater in cycles rather than continuously. The system monitors humidity levels and activates the dehumidification functions only when needed, thereby maintaining effective moisture control while significantly reducing energy consumption compared to continuous operation.

Inventive Principle:
Principle #19Periodic action

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 dehumidifies and sterilizes bathroom environments, reducing mold and bacteria growth while protecting electrical components from moisture damage through efficient air circulation and ionization.

Implementation Method 1

a filter (60) having a photocatalytic coating formed on a surface thereof

Methodology Applied
Scientific EffectPhotocatalytic oxidation: Photo-oxidation

Implementation Method 2

a blower fan (40), a heater (50), and ionizers (70)

Methodology Applied
Scientific EffectIonization: Ionisation

Data Source

PatentUS10240806B2Bathroom management apparatus
Publication Date: 2019.03.26 LG ELECTRONICS INC
  • US10240806B2 patent drawing
  • US10240806B2 patent drawing
  • US10240806B2 patent drawing

AI summary

A bathroom management apparatus capable of circulating air through a duct and discharging moisture that has entered the duct is disclosed. The bathroom management apparatus includes a case including an air intake port formed in a front surface thereof, a first air discharge port formed in the front surface thereof and a second air discharge port formed in a lower surface thereof, a duct provided in the case so as to connect the air intake port, the first air discharge port and the second air discharge port to each other, a damper provided in the duct so as to direct air toward one of the first air discharge port and the second air discharge port, and a second discharge vane for opening and closing the second air discharge port, wherein the damper includes a first water discharge port and the second discharge vane includes a second water discharge port.