Sanitary Washing Nozzle Pulsation for Stimulation and Volume
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sanitary washing apparatuses face challenges in achieving a balance between the feeling of stimulation and the feeling of volume, with conventional techniques either requiring large amounts of water or being limited in increasing the contrast between these sensations.
Innovation Solution
A sanitary washing apparatus that alternately jets water with varying pressures to form distinct water masses, where a fast-moving water mass overtakes a slow-moving one, enhancing the jetting water cross-sectional area and providing a greater feeling of volume while maintaining stimulation, all while using a reduced amount of water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If water pressure is increased to enhance the feeling of stimulation, then the feeling of stimulation is improved, but the feeling of volume decreases
Solution Approach 1:
The patent applies periodic action by creating pulsating water flow with alternating high and low pressure phases. During the high pressure phase, water is jetted at high velocity to provide stimulation feeling. During the low pressure phase, water accumulates to form a water mass that provides volume feeling. This periodic alternation allows both stimulation and volume feelings to be experienced sequentially, resolving the contradiction between the two sensations.
Solution Approach 2:
The patent applies preliminary action by accumulating water during the low pressure phase before jetting it during the high pressure phase. This preliminary accumulation creates a water mass that enhances the volume feeling, while the subsequent high velocity jetting provides the stimulation feeling. The preliminary water accumulation ensures sufficient water volume is available for the stimulation phase.
2Quantity of substance
If water pressure is reduced to conserve water, then water consumption is reduced, but the feeling of stimulation decreases
Solution Approach 1:
The patent uses periodic action with distinct high pressure and low pressure phases. During the low pressure phase, water flows at reduced velocity to conserve water while still accumulating volume. During the high pressure phase, the accumulated water is jetted at high velocity to provide stimulation feeling. This periodic alternation allows water conservation while maintaining stimulation effectiveness through the high velocity phase.
Solution Approach 2:
The patent applies dynamics by dynamically adjusting water pressure between high and low states rather than maintaining a constant pressure. This dynamic pressure variation allows the system to optimize water consumption during low pressure phases while ensuring adequate stimulation during high pressure phases, adapting the water flow characteristics to different functional requirements.
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 allows for a more comfortable washing experience with compatibility between the feeling of stimulation and volume, even with less water than conventional methods, and can achieve a greater feeling of volume with the same water usage.
Implementation Method 1
a pressure higher than the jetting pressure obtained from the supply water source is intermittently generated so as to achieve a comfortable feeling of washing even with a reduced amount of water used
Implementation Method 2
a water portion with fast velocity overtakes a water portion jetted earlier with slow velocity to form a large jetting water group
Data Source
AI summary
A sanitary washing apparatus includes: a washing nozzle; and a pressurizing device. The sanitary washing apparatus that performs first and second jetting processes alternately jetted with a prescribed waiting time there between. The pressurizing device makes minimum pressure of water in the second jetting process higher than minimum pressure of water in the first jetting process and makes maximum pressure of water in the second jetting process higher than maximum pressure of water in the first jetting process so that the second water mass is faster than the first water mass. The prescribed waiting time between the first and the second jetting processes is set so that before the first water mass impinges on the human body, the second water mass having faster velocity than the first water mass overtakes the first water mass to enlarge jetting water cross-sectional area of the first water mass.