Water Outlet Fitting Hose Bend Deflection Element
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Solution Overview
Problem
Existing water outlet fittings with pull-out shower heads for kitchens are difficult to assemble due to hose size and bending radius limitations, which prevent hoses with necessary pressure and kink resistance from fitting through tap holes, requiring cumbersome connections below the sink.
Innovation Solution
A water outlet fitting design featuring a hose bend with a deflection element that allows preassembly of the mixed water line, with two hose sections connected via an inner deflection channel, ensuring the combined size is smaller than the tap hole, enabling all components to be pushed through as a unit for easier installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hose with necessary pressure and kink resistance is used, then reliable water supply is ensured, but the bending radius becomes too large to fit through the tap hole
Solution Approach 1:
The hose is divided into multiple sections (first hose section and second hose section) that can be assembled separately and then connected through the deflection element, allowing each section to be thinner and more flexible while maintaining overall pressure resistance
Solution Approach 2:
A deflection element is introduced as an intermediary component that enables the hose to change direction and fit through the limited space of the tap hole while maintaining water flow integrity
2Ease of operation
If the hose is made thinner to fit through the tap hole, then installation ease is improved, but pressure and kink resistance deteriorate
Solution Approach 1:
The hose is segmented into multiple thinner sections that can individually pass through the tap hole, with the overall assembly maintaining sufficient pressure and kink resistance through proper connection design
Solution Approach 2:
The hose assembly is configured in a multi-dimensional arrangement where sections are positioned at different angles and depths, allowing the thinnest possible sections to pass through the tap hole while the overall structure maintains mechanical strength
3Device complexity
If hose connections are made below the sink, then hose routing is simplified, but assembly complexity and installation time increase
Solution Approach 1:
The hose sections are pre-assembled with the deflection element and connected to the outlet pipe before installation, so that the complete assembly can be installed as a single unit through the tap hole, eliminating the need for time-consuming below-sink connections
4Adaptability or versatility
If a flow divider element is added to supply both pull-out spray and main outlet, then functionality is improved, but the assembly size increases beyond the tap hole opening
Solution Approach 1:
The flow divider element is nested within the hose assembly structure, with hose sections positioned around and through the deflection element, allowing the entire assembly to pass through the tap hole while maintaining dual outlet functionality
Solution Approach 2:
The flow divider and hose sections are arranged in a three-dimensional configuration where components are positioned at different angles and depths, reducing the projected cross-sectional area while maintaining full functionality
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A water outlet fitting (100') with a pull-out dishwashing spray head (12) comprises: - a fitting base; - a mixing unit (15) that can be inserted into a recess in the fitting base, with at least one mixed water outlet; - a flexible hose (30') that extends from the mixed water outlet to outside the fitting base (10) and from there through the fitting base (10) to the dishwashing spray head (12). The hose (30') is divided at at least one bend into a first hose section (31') and a second hose section (32'). The hose sections (31', 32') are connected to each other via at least one deflection element (33') which has at least one inner deflection channel, wherein the deflection element (33') with the hose sections (31', 32') attached to it is smaller than the clear opening cross-section of the tap hole or of a mounting sleeve (13) that can be inserted into the tap hole.