Central ventilation device for providing a space with air conditioning

Solution Overview

Problem

Central ventilation systems for air conditioning require complex installations and significant space for separate pipe silencers to reduce telephony sound transmission, leading to increased costs and installation efforts.

Innovation Solution

Integrating a sound-absorbing body within the air distribution box, which assumes the function of both air distribution and sound attenuation, eliminating the need for a separate pipe silencer and reducing space requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a separate pipe silencer is installed in the branch line to reduce telephony sound transmission, then sound attenuation is improved, but device complexity and installation space requirements increase

Engineering Contradiction:

Improvetelephony sound transmissionVSAvoidinstallation complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent combines the air distribution box and pipe silencer into a single integrated unit. The air distribution box is designed to accommodate a sound-absorbing body inside its cavity, merging the air distribution function with the sound attenuation function. This eliminates the need for a separate pipe silencer installation in the branch line, reducing device complexity and installation space requirements while maintaining effective sound attenuation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The air distribution box is designed to perform multiple functions: it distributes processed air to induction nozzles and simultaneously serves as a housing for the sound-absorbing body to attenuate telephony sound transmission. This multi-functionality eliminates the need for separate dedicated sound attenuation components, simplifying the overall system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If a separate pipe silencer is installed in the branch line to reduce telephony sound transmission, then sound attenuation is improved, but installation space requirements increase

Engineering Contradiction:

Improvetelephony sound transmissionVSAvoidinstallation space

Core Design Contradiction:

Object-affected harmful factorsVSVolume of stationary object

Solution Approach 1:

The patent combines the air distribution box and pipe silencer into a single integrated unit. The air distribution box is designed to accommodate a sound-absorbing body inside its cavity, merging the air distribution function with the sound attenuation function. This eliminates the need for a separate pipe silencer installation in the branch line, reducing device complexity and installation space requirements while maintaining effective sound attenuation.

Inventive Principle:

Principle #5Merging (Combining)

3Object-affected harmful factors

If a separate pipe silencer is installed in the branch line to reduce telephony sound transmission, then sound attenuation is improved, but manufacturing costs increase

Engineering Contradiction:

Improvetelephony sound transmissionVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent combines the air distribution box and pipe silencer into a single integrated unit. The air distribution box is designed to accommodate a sound-absorbing body inside its cavity, merging the air distribution function with the sound attenuation function. This eliminates the need for a separate pipe silencer installation in the branch line, reducing device complexity and installation space requirements while maintaining effective sound attenuation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The air distribution box is designed to perform multiple functions: it distributes processed air to induction nozzles and simultaneously serves as a housing for the sound-absorbing body to attenuate telephony sound transmission. This multi-functionality eliminates the need for separate dedicated sound attenuation components, simplifying the overall system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 dampens sound transmission while simplifying installation and reducing space needs, achieving sound attenuation without the need for additional silencers, thus lowering costs and installation complexity.

Implementation Method 1

the air distribution box has only a single sound absorbing body in its interior

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentEP2138777B1Central ventilation device for providing a space with air conditioning

Publication Date: 2021.01.27 LTG AG

Figure 1
Figure 2~3

AI summary

The central ventilation device (14) is provided with an induction device (48) that has an air distribution box (22) connected to a supply line, at which an induction nozzle (38) of the induction device is attached. The air distribution box has a sound absorbing body (26) in its inner side.