Laundry Lint Filter Cleaning Nozzle for Low-Pressure Wash Water
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Solution Overview
Problem
Conventional condensation type laundry machines with drying functions face inefficiencies in moisture removal and require frequent maintenance due to lint accumulation, which can lead to breakdowns and water wastage, especially when low-pressure wash water is used.
Innovation Solution
A laundry machine design featuring a tub with a drum, air circulation unit, lint filter, and filter cleaning unit that uses a distribution nozzle with multiple ejection angles to efficiently clean the lint filter using wash water, even at low pressures, improving condensation efficiency and maintenance management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a lint filter is installed to filter lint from air circulation, then lint accumulation in ducts and fan is reduced, but the filter requires frequent maintenance and cleaning
Solution Approach 1:
The lint filter is equipped with a self-cleaning mechanism where wash water is automatically supplied through nozzle holes to rinse accumulated lint off the filter screen. The filtered lint is then discharged through a dedicated discharge hole, enabling the filter to clean itself without manual intervention and maintain continuous operation.
Solution Approach 2:
The system automatically discards accumulated lint from the filter by channeling wash water through the filter to rinse lint into a collection container. This automated disposal process eliminates the need for frequent manual cleaning and maintenance of the lint filter.
2Productivity
If wash water is supplied at high pressure to clean the lint filter effectively, then cleaning efficiency is improved, but water supply infrastructure requirements increase and low-pressure areas cannot operate
Solution Approach 1:
The cleaning system is designed to adapt to varying water pressure conditions by optimizing nozzle hole configuration and water supply timing. The system can effectively clean the filter across a wide pressure range (0.2-1.0 MPa) by adjusting water flow parameters rather than requiring fixed high-pressure supply.
Solution Approach 2:
The lint filter cleaning operates periodically during the washing cycle rather than continuously. Wash water is supplied intermittently through nozzle holes at specific intervals to rinse accumulated lint, which maintains cleaning effectiveness while adapting to variable water pressure conditions and reducing overall water consumption.
3Productivity
If the condensation duct area is increased to improve moisture removal capacity, then drying performance is enhanced, but water consumption increases and space requirements grow
Solution Approach 1:
The lint filter is extracted as a separate, removable component positioned in the air circulation path before the condensation duct. This allows lint to be filtered out independently, preventing accumulation in the condensation duct and maintaining its efficiency without requiring excessive duct area or water consumption for cleaning.
Solution Approach 2:
The lint filter performs preliminary filtration of air circulation before air enters the condensation duct. By removing lint upstream, the system prevents lint accumulation that would otherwise reduce condensation efficiency, allowing the condensation duct to operate at optimal size without excessive water consumption for makeup or cleaning.
4Ease of repair
If manual cleaning of the lint filter is required, then filter maintenance can be performed, but user convenience is reduced and maintenance time increases
Solution Approach 1:
The lint filter is equipped with a self-cleaning mechanism where wash water is automatically supplied through nozzle holes to rinse accumulated lint off the filter screen. The filtered lint is then discharged through a dedicated discharge hole, enabling the filter to clean itself without manual intervention and maintain continuous operation.
Solution Approach 2:
A wash water supply system acts as an intermediary to automatically clean the lint filter. Wash water is channelled through nozzle holes to rinse the filter screen, and lint is discharged through a separate hole into a collection container, eliminating the need for direct manual cleaning by the user.
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
Enhances condensation efficiency, facilitates easy maintenance of the lint filter, and ensures effective cleaning of the lint filter even when wash water pressure is below a preset level, reducing the risk of machine breakdowns and water wastage.
Implementation Method 1
a filter cleaning unit configured to eject wash water through a plurality of nozzle holes so as to separate the lint from the lint filter
Implementation Method 2
an air circulation unit configured to supply air into the tub
Implementation Method 3
a condensation duct 14 connected to the exterior of the tub 12, in which condensation of humid air discharged from the tub 12 occurs
Data Source
AI summary
The present invention relates to a laundry machine in which the lint filter can be cleaned even at low water pressure and a method for cleaning the lint filter, wherein the invention comprises: a tub in which washing water is accommodated; a drum which is rotatably disposed in said tub; an air circulating unit which supplies air to said tub; an air returning hole which returns the air of said tub to said air circulating unit; a lint filter which filters lint contained in the air which is circulated by said air circulating unit; and a filter cleaning unit which sprays the washing water through a plurality of nozzle holes such that said lint is separated from said lint filter.