Laundry Dryer Filter Washing for Stable Air Flow and Pressure
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Solution Overview
Problem
Existing laundry dryer filters require frequent cleaning to maintain air flow rate and drying performance, which often results in water pressure issues and clogging due to simultaneous water delivery from multiple nozzles, leading to compressor shutdowns and increased energy consumption.
Innovation Solution
The filter is cleaned gradually by directing water to only one portion of the filter surface at a time, using multiple pipes and nozzles to prevent the formation of a water film and maintain air flow, with a control unit managing the water delivery to selected sections of the filter surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple nozzles are used to wash the entire filter area, then the filter cleaning effectiveness is improved, but the water pressure decreases and lint removal increases clogging risk
Solution Approach 1:
The filter surface is divided into multiple sections, and water is delivered to different sections sequentially rather than simultaneously. This segmentation allows the pump to maintain high water pressure while still cleaning the entire filter surface over time, resolving the contradiction between cleaning effectiveness and water pressure maintenance.
2Productivity
If water is delivered to all nozzles simultaneously, then the entire filter surface is cleaned, but the amount of lint removed highly increases the risk of clogging the carrying line or discharge pump
Solution Approach 1:
The filter surface is divided into multiple sections with corresponding nozzles grouped into sets. Water is delivered to one set of nozzles at a time, cleaning one section at a time. This sequential approach reduces the amount of lint removed simultaneously, preventing overload and clogging of the carrying line or pump, while still achieving complete filter surface cleaning.
3Productivity
If the filter is cleaned frequently to maintain air flow rate, then drying performance is maintained, but time and energy consumption increase due to compressor shutdowns
Solution Approach 1:
The sequential water delivery system cleans the filter in sections without causing complete water film formation, thereby avoiding compressor shutdowns. This allows the filter to be cleaned effectively while maintaining continuous operation of the drying system, eliminating the time and energy loss associated with compressor restart cycles.
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 method allows for effective filter cleaning without interrupting the drying cycle, using less water and preventing clogging, while maintaining high water pressure and reducing the risk of compressor shutdowns.
Implementation Method 1
a spray nozzle that directs water to the filter (6) surface
Data Source
Figure 1
Figure 2~3
AI summary
The laundry dryer (1) of the present invention comprises a body (2), a drum (3) wherein the laundry to be dried is placed, an air circulation duct (5) providing the delivery of the drying air onto the laundry in the drum (3), a heat exchanger (4) that is disposed on the air circulation duct (5) and that enables the temperature of the drying air to be changed, a tank (7) wherein the condensed water is stored, at least one filter (6) that holds the particles such as fiber, lint, etc. in the drying air and a water conduit (11) that carries the water received from the tank (7) to the filter (6).