Laundry washing machine
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Solution Overview
Problem
Existing laundry washing machines are inefficient in using water and detergent, with high energy consumption and incomplete detergent mixing, leading to low detergent concentration on laundry during the initial washing steps, and require recirculation that increases operational costs.
Innovation Solution
A laundry washing machine with a detergent basin connected to a Venturi pump system that suctions and sprays a mixture of water and detergent directly onto the laundry, eliminating the need for recirculation and ensuring complete detergent mixing and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If recirculation systems are used to reduce water and detergent consumption, then resource efficiency is improved, but device complexity and manufacturing cost increase due to electric pumps
Solution Approach 1:
The patent extracts the pump function from the recirculation system by removing the electric pump and using only gravity-driven flow. The washing liquid flows from the tub bottom through a filter and back to the drum without mechanical pumping, simplifying the system while maintaining recirculation benefits
Solution Approach 2:
The patent positions the filter and recirculation components at the same gravitational level as the tub bottom, allowing washing liquid to flow naturally without needing to be lifted against gravity. This eliminates the need for electric pumps while maintaining effective recirculation
2Productivity
If electric pumps are used for recirculation, then washing liquid can be effectively redistributed, but energy consumption increases
Solution Approach 1:
The recirculation system serves itself by using the weight and flow of the washing liquid to drive the process. The liquid flows naturally from the tub bottom through the filter and back to the drum, eliminating the need for external energy input from electric pumps
3Ease of manufacture
If detergent is added to the tub bottom, then it can be easily introduced, but mixing is incomplete and detergent concentration on laundry is low during initial steps
Solution Approach 1:
The patent introduces detergent to the tub bottom in advance, where it is gradually picked up by the flowing washing liquid during the recirculation process. This preliminary positioning allows for natural mixing as the liquid flows over and through the detergent, ensuring complete dissolution and uniform distribution before reaching the laundry
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 enhances washing efficiency by ensuring direct and intense detergent contact with laundry, reducing detergent and water consumption, and lowering energy usage through the use of an ejector pump, which saves power and simplifies the washing system.
Implementation Method 1
pumping means (19) connected to the second supply conduit (18) and actuatable for suctioning mains water along with the detergent from the detergent basin (8) and spraying the suctioned mixture of water and detergent directly onto the laundry within the laundry drum (5), wherein the pumping means comprise an ejector (19) with a motor fluid inlet opening (21)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A laundry washing machine (1) comprising: a laundry drum (5) supported within a washing tub (3) suitable to hold a washing liquid, a detergent basin (8) suitable to hold a detergent, a first supply valve (6) connectable to the water supply system, a first supply conduit (17) connecting the first supply valve (6) in flow communication with the detergent basin (8) so as to supply mains water in the detergent basin (8), a second conduit (18) connecting the detergent basin (8) in flow communication with the interior of the laundry drum (5), and pumping means (19) connected to the second supply conduit (18) and actuatable for suctioning mains water along with the detergent from the detergent basin (8) by means of an accelerated jet or Venturi jet and for spraying the suctioned mixture of water and detergent directly into the laundry drum (5).