System for ventilation of rooms

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Solution Overview

Problem

Existing ventilation systems for air conditioning in buildings have large space requirements and low energy efficiency due to the need for powerful fans and heat exchangers.

Innovation Solution

The system relocates the turbomachine and heat exchanger components to reduce pipe length, incorporates a temperature body as a radiator to enhance airflow, and features a pivotable housing for improved airflow control and maintenance access, allowing for reduced fan power and increased efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If powerful fans and heat exchangers are used to achieve required ventilation performance, then ventilation efficiency is improved, but space requirements increase and device complexity increases

Engineering Contradiction:
Improveventilation performanceVSAvoidspace requirements
Core Design Contradiction:
ProductivityVSVolume of moving object

Solution Approach 1:

The housing is made pivotable around a horizontal axis, allowing it to be positioned in different orientations. This dynamic positioning enables the system to adapt to different installation scenarios and space constraints, achieving required ventilation performance without requiring excessively large fixed components

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The pivotable housing introduces a new degree of freedom (rotational movement around horizontal axis) to the system. This allows the air outlet to direct airflow in different directions, effectively utilizing three-dimensional space for ventilation distribution without increasing the physical footprint of the device

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

2Productivity

If powerful fans and heat exchangers are used to achieve required ventilation performance, then ventilation efficiency is improved, but energy consumption increases

Engineering Contradiction:
Improveventilation performanceVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The pivotable housing allows optimization of airflow direction and distribution, improving ventilation efficiency without requiring excessive fan power. By adjusting the housing position, the system can achieve better airflow patterns that reduce energy consumption while maintaining required ventilation performance

Inventive Principle:
Principle #15Dynamics

3Stability of the object's composition

If the housing is fixed in position to ensure structural stability, then structural stability is improved, but maintenance access to heat exchanger deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidmaintenance access
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The housing is designed to be pivotable around a horizontal axis rather than completely fixed. This allows the housing to be rotated into a maintenance position where the air outlet faces downward, providing easy access to the heat exchanger for cleaning and servicing, while returning to a stable operational position for normal use

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The housing alternates between operational position (for ventilation) and maintenance position (for servicing). This periodic movement between states allows the system to maintain structural stability during operation while providing periodic access for maintenance, resolving the contradiction between fixed stability and maintenance accessibility

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

This design reduces space requirements, enhances energy efficiency, and simplifies maintenance while providing effective air exchange and temperature control, making it suitable for thinner walls and reducing energy consumption.

Implementation Method 1

the air transported in from outside is heated by the radiator and flows upwards, creating a suction effect for the incoming air

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

a pipe in which a heat exchanger is arranged

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentEP3921580B1System for ventilation of rooms
Publication Date: 2024.07.24 ZEHNDER GROUP INTERNATIONAL AG
  • EP3921580B1 patent drawingFigure 1
  • EP3921580B1 patent drawingFigure 2
  • EP3921580B1 patent drawingFigure 3

AI summary

The invention relates to a system for ventilating, in particular air-conditioning, spaces, which system can be inserted into a wall, in particular into a cutout passing through an external wall of a house, having a pipe in which a heat exchanger is arranged, and having a plate-like air guide which partially closes the pipe at one end side and has an air inlet for air that is intended to flow into the pipe and an air outlet for air that is intended to flow out of the pipe, and having a flow device with a flow machine, the flow machine having a temperature body which is arranged on the air outlet side of the air guide, on the side remote from the pipe.