Air Conditioner Voice Input Layout Against Airflow Interference

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Solution Overview

Problem

In air conditioning systems, the operation of voice recognition devices is hindered by air flow, particularly in wall-mounted units where intake and discharge ports create turbulent air flows, making it challenging to achieve smooth voice recognition and transmission.

Innovation Solution

A voice recognition device is mounted on the side surface of the air conditioner's cabinet with a voice input device inclined forward and a voice guide groove on its front surface, along with a speaker, to minimize interference from air flow and enhance voice detection and transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the voice recognition device is disposed on the front surface of the wall-mounted indoor unit, then the voice recognition device can be easily accessed by users, but the air flow from intake and discharge ports interferes with voice recognition and transmission

Engineering Contradiction:
ImproveAccessibility of voice recognition deviceVSAvoidAir flow interference with voice recognition
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The voice recognition device is disposed on the side surface of the cabinet rather than the front surface, changing the spatial dimension from horizontal (front surface) to vertical (side surface). This dimensional change allows the device to be positioned outside the direct path of air flow from intake and discharge ports while remaining accessible to users.

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

Solution Approach 2:

The side surface of the cabinet acts as an intermediary location that is neither directly in the air flow path nor completely isolated from user interaction. By placing the voice recognition device on this intermediary surface, the patent resolves the conflict between air flow interference and user accessibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Volume of stationary object

If the voice input device is disposed horizontally, then the internal space utilization is maximized, but the voice recognition accuracy is reduced due to air flow interference

Engineering Contradiction:
ImproveInternal space utilizationVSAvoidVoice recognition accuracy
Core Design Contradiction:
Volume of stationary objectVSMeasurement precision

Solution Approach 1:

The voice input device is configured with an inclined surface rather than a horizontal orientation. This dynamic adjustment of the device angle allows it to better capture voices from different directions while the voice guide groove directs the collected voice toward the microphone, maintaining space efficiency while improving recognition accuracy.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The inclination angle of the voice input device is changed from horizontal to an angled configuration. This parameter change optimizes the device's ability to capture voice signals while positioning it to minimize interference from air flow, thereby improving voice recognition accuracy without sacrificing internal space utilization.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If the speaker is disposed close to the voice input device, then the interaction between voice and sound is enhanced, but the speaker causes interference with voice recognition

Engineering Contradiction:
ImproveVoice-sound interactionVSAvoidSpeaker interference with voice recognition
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The speaker and voice input device are disposed at different locations on the cabinet - the speaker on the front surface and the voice input device on the side surface. This spatial separation ensures that each component performs its function optimally without interfering with the other, while still maintaining effective voice-sound interaction for user feedback.

Inventive Principle:
Principle #3Local quality

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 allows for reliable voice recognition with reduced interference from air flow, improving the accuracy and reliability of voice recognition and transmission in air conditioning systems.

Implementation Method 1

a voice guide portion connected to one side of the communication hole and including a voice guide groove recessed inward from the cover surface to guide a voice generated from the outside and transmitted through the communication hole to the voice input device

Methodology Applied
Scientific EffectSound wave propagation: Sound

Data Source

PatentEP3913296B1Indoor unit of air conditioner
Publication Date: 2024.08.14 LG ELECTRONICS INC
  • EP3913296B1 patent drawingFigure 1
  • EP3913296B1 patent drawingFigure 2
  • EP3913296B1 patent drawingFigure 3

AI summary

The present disclosure relates to an indoor unit of an air conditioner. In the indoor unit according to the present disclosure, a voice recognition device is mounted on a side surface of a cabinet. A voice input device and a speaker are disposed inside the voice recognition device. The voice input device disposed inside the voice recognition device is disposed to be inclined forward and includes a voice guide groove formed on a front surface of the voice input device.