Washer-Dryer Vent Positioning to Reduce Overfoaming and Heat Loss
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Solution Overview
Problem
Existing clothes treatment devices, such as washer-dryers, face inefficiencies in heat exchange and drying processes due to limited temperature differences between the outer tub and air, leading to slow heating and increased risk of overfoaming, along with environmental concerns from direct discharge of hot air.
Innovation Solution
A clothes treatment device with a tub assembly and air channel assembly that includes a vent for dynamic air pressure balance, eliminating the need for a discharge opening to enhance drying efficiency and prevent overfoaming, featuring a waterproof and air-permeable vent to manage airflow and moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a discharge opening is added to the tub assembly to discharge hot and humid air, then the drying effect is improved, but the risk of overfoaming increases and the heating-up speed in the initial stage decreases
Solution Approach 1:
The patent removes the discharge opening from the tub assembly, extracting the harmful function of direct hot air discharge. Instead, it uses a blower to create controlled airflow circulation where hot and humid air is gently guided to the air outlet, eliminating overfoaming risks while maintaining drying effectiveness
Solution Approach 2:
The patent introduces a blower as an intermediary device between the clothes treatment chamber and the air outlet. The blower mediates the airflow process, creating a controlled circulation pattern that prevents direct discharge of hot air through a discharge opening, thereby eliminating overfoaming while maintaining drying efficiency
2Productivity
If a discharge opening is added to the tub assembly to discharge hot and humid air, then the drying effect is improved, but the heating-up speed in the initial stage decreases
Solution Approach 1:
The patent removes the discharge opening that caused direct hot air discharge, eliminating the harmful effect of rapid heat loss in the initial stage. The redesigned airflow system retains heat within the clothes treatment chamber longer, enabling faster heating-up while still achieving effective drying through controlled circulation
3Productivity
If a discharge opening is added to the tub assembly, then the airflow circulation is improved, but the environmental impact increases due to direct discharge of hot air
Solution Approach 1:
The blower acts as an intermediary that controls airflow to prevent direct discharge of hot air through a discharge opening. It creates a circulation pattern where air is gently guided to the air outlet, maintaining effective airflow circulation while reducing environmental impact by preventing direct hot air release
4Productivity
If the air pressure in the clothes treatment chamber increases, then the drying efficiency is improved through air pressure difference, but the risk of foam overflow from the vent increases
Solution Approach 1:
The patent optimizes the vent parameters including its cross-sectional area, position, and shape to create an optimal balance. The vent is designed with specific dimensions that allow it to withstand normal air pressure differences for effective drying while preventing foam overflow under abnormal high pressure conditions
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
The solution improves drying efficiency by maintaining air pressure balance and preventing overfoaming, while reducing energy consumption and environmental impact through optimized airflow management and structural design.
Implementation Method 1
a heating member provided inside the air channel assembly
Implementation Method 2
a blower configured to guide air to flow
Implementation Method 3
the air channel assembly is provided with a vent in communication with the air outlet and the outside, and the vent is located above the air outlet
Data Source
Figure 1
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AI summary
A clothes treatment apparatus (100), comprising: a drum assembly (10), which has an air inlet (101) and an air outlet (102), the air inlet (101) and the air outlet (102) being provided at an upper part of a side wall of the drum assembly (10); a clothes drying assembly (20), which comprises an air channel assembly that connects the air inlet (101) and the air outlet (102), a heating member (22) provided inside of the air channel assembly, and a fan (23) which is used to guide air to flow, wherein the air channel assembly has a vent (2141) which communicates with the air outlet (102) and the outside, and the vent (2141) is located above the air outlet (102).