Air-Path Filter Net Cleaning With Nozzle-Directed Drainage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing laundry treatment apparatuses face challenges in effectively removing foreign substances from filter nets during the drying process, leading to reduced efficiency and potential re-deposition of these substances onto laundry.
Innovation Solution
A method involving a laundry treatment apparatus with a filter net and nozzle arrangement that uses a rotational motion to spray cleaning water directly onto the filter net, ensuring thorough cleaning and drainage of foreign substances, while preventing re-deposition onto laundry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cleaning water is sprayed to the filter net to remove foreign substances, then foreign substances can be removed from the filter net, but the foreign substances may be re-deposited onto the laundry
Solution Approach 1:
The patent extracts and separates the foreign substance removal process from the laundry drying process by introducing a dedicated filter net cleaning system. The cleaning water is directed specifically at the filter net to remove accumulated foreign substances, and the cleaned water (now containing foreign substances) is channeled through a drain path to the outside, preventing re-deposition onto the laundry.
Solution Approach 2:
The patent introduces an intermediary drainage system that acts as a mediator between the filter net cleaning process and the laundry space. The drain path serves as an intermediary channel that transports cleaning water and foreign substances away from the laundry environment, preventing direct contact between cleaned foreign substances and the laundry.
2Reliability
If a filter net is disposed on the circulation path to collect foreign substances, then foreign substances can be filtered from air, but the filter net requires manual cleaning which reduces productivity
Solution Approach 1:
The patent implements a self-service cleaning system where the filter net automatically cleans itself during the drying cycle. The cleaning water is supplied to the filter net, foreign substances are removed, and the contaminated water is automatically drained, all without requiring manual intervention. This allows the filter net to maintain its filtration effectiveness while continuing to operate during the drying process.
Solution Approach 2:
The patent ensures continuous operation of the filter net by integrating the cleaning function into the ongoing drying cycle. Rather than stopping the drying process to manually clean the filter net, the system continuously filters air while periodically self-cleaning, maintaining uninterrupted productivity throughout the drying cycle.
3Productivity
If the inner tub is rotated during drying to improve drying efficiency, then drying speed increases, but friction generates more foreign substances that adhere to the filter net
Solution Approach 1:
The patent applies preliminary action by providing cleaning water to the filter net before the foreign substances accumulate to problematic levels. The cleaning mechanism is activated during the drying cycle to proactively remove foreign substances generated by inner tub rotation, preventing saturation of the filter net and maintaining its filtration effectiveness throughout the high-speed drying process.
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 approach ensures uniform cleaning of the filter net, increases cleaning performance, automatically removes foreign substances during the draining process, and prevents re-deposition onto laundry, enhancing the overall efficiency and cleanliness of the drying cycle.
Implementation Method 1
a nozzle arrangement part in which a plurality of nozzles, for spraying cleaning water to the filter net from the lower side of the filter part, are arranged
Implementation Method 2
spraying cleaning water to the filter net... to remove foreign substances collected in the filter net
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method for controlling a laundry treatment apparatus which automatically removes and discharges foreign substances collected in a filter net provided on an air circulation path. A laundry treatment apparatus according to the present invention comprises: an outer tub; an inner tub disposed inside the outer tub; an air circulation path of which the start end is connected to the side surface of the outer tub, and which includes a section which upwardly extends from the upper side to the lower side; a water drain path which is connected to the lower surface of the outer tub so as to guide water inside the outer tub to be drained to the outside; a filter part having a filter net which is disposed to traverse the upwardly extending section of the air circulation path; and a nozzle arrangement part in which a plurality of nozzles, for spraying cleaning water to the filter net from the lower side of the filter part, are arranged. A method for controlling the laundry treatment apparatus comprises: a water supplying step of supplying wash water into the outer tube; a laundry washing step for washing or rinsing laundry in the inner tub by using the wash water; and a water draining step of controlling the wash water to be drained through the water drain path while controlling the cleaning water to be sprayed through the plurality of nozzles and be drained through the water drain path.