Washer Control Panel Speaker Venting Against Moisture Ingress
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Solution Overview
Problem
Washing machines face challenges in transmitting sound from speakers while preventing moisture from entering the control panel assembly, which can lead to operational issues and user inconvenience.
Innovation Solution
The design incorporates a speaker hole in the control panel with shielding films and a guide rib to direct sound outward while blocking moisture, including a drain hole to manage any moisture ingress, ensuring effective sound transmission and panel protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a speaker hole is formed through the control panel to transmit sound, then sound transmission is improved, but moisture infiltration risk increases
Solution Approach 1:
A shielding unit is introduced as an intermediary component between the speaker hole and the control panel interior. This shielding unit includes a rear shielding film and side shielding films that collectively block moisture from entering through the speaker hole while allowing sound to pass through, thus resolving the contradiction between sound transmission and moisture protection
Solution Approach 2:
The shielding unit employs thin film structures (rear shielding film and side shielding films) that are positioned to block moisture infiltration paths. These films are strategically arranged to maintain acoustic transmission while providing effective moisture barrier functionality
2Reliability
If the speaker is disposed at the rear of the control panel, then moisture protection is improved, but sound transmission efficiency deteriorates
Solution Approach 1:
The solution transitions from a simple linear speaker-hole arrangement to a multi-dimensional shielding structure. The side shielding films are positioned at angled orientations (e.g., 45 degrees) relative to the rear shielding film, creating a three-dimensional moisture blocking configuration that allows sound to pass through the rear shielding film while preventing moisture ingress from multiple directions
3Object-affected harmful factors
If shielding films are added to block moisture, then moisture protection is improved, but device complexity increases
Solution Approach 1:
The shielding unit integrates multiple shielding films (rear shielding film and side shielding films) into a unified structure that performs both moisture blocking and sound transmission functions. This merged design achieves effective moisture protection while maintaining relatively simple implementation through coordinated arrangement of the film components
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 solution allows for clear sound transmission from the speaker while preventing moisture from entering the control panel, enhancing user convenience and maintaining the washing machine's operational integrity.
Implementation Method 1
a shielding unit formed at a rear surface of the control panel to cover a rear of the speaker hole... block moisture from being introduced to the inside the control panel through the speaker hole
Implementation Method 2
The guide rib may be provided to guide the sound, which is generated from the speaker, toward the speaker hole
Implementation Method 3
The side shielding film may be configured to guide the sound, which is generated from the speaker, to the speaker hole
Data Source
AI summary
A washing machine having a structure capable of preventing moisture from being penetrated to the inside the control panel assembly while easily transmitting sound generated from the speaker, the washing machine including a cabinet, a control panel disposed on a front surface of the cabinet, a display unit installed on the control panel such that a front surface of the display unit is exposed to a front of the control panel, a speaker disposed at a rear of the control panel, and a speaker hole provided through the control panel so that sound being generated from the speaker is transmitted to outside the control panel, wherein the speaker hole is disposed to be spaced apart from the speaker.