Rain Water Filter Vertical Adhesive Surface Gravity Flush
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Solution Overview
Problem
Conventional rain water filters with a low offset between the inlet and residual water outlet tend to clog due to filtered residues, requiring regular cleaning, and are not suitable for installation in cisterns due to their height.
Innovation Solution
A rain water filter design with a downwardly offset residual water outlet and a vertically aligned filter surface, where unfiltered water flows through a channel with a longitudinal slot, allowing gravity to flush residues and using an adhesive filter with a half-shell configuration to maximize water flow and prevent clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the inlet and residual water outlet are at the same height to reduce housing height, then the filter pipe clogs due to residue deposition
Solution Approach 1:
The patent inverts the conventional horizontal filter pipe arrangement by implementing a vertically oriented filter surface. Water flows downward along the vertical filter surface, and filtered residues are flushed down by gravity to the residual water outlet located below the inlet, preventing deposition and clogging while maintaining compact housing height.
Solution Approach 2:
The patent transitions from a horizontal filter pipe configuration to a vertical filter surface arrangement. This dimensional change allows gravity to effectively flush residues downward along the filter surface to the residual water outlet, solving the clogging problem while keeping the housing height compact through optimized vertical space utilization.
2Reliability
If the filter pipe height is increased to prevent clogging, then the housing height becomes too large for cistern installation
Solution Approach 1:
The patent applies local quality by concentrating the filtration function on a vertical surface within a compact volume. The filter surface is positioned vertically along the water flow path, allowing effective residue flushing in a localized vertical arrangement that fits within the limited height space required for cistern installation.
Solution Approach 2:
By reorienting the filter from horizontal to vertical arrangement, the patent utilizes the vertical dimension efficiently. This allows the filter surface to extend vertically for adequate filtration area while the overall housing height remains compact, enabling installation in cisterns with limited space.
3Reliability
If a vertical filter surface is used to prevent residue deposition, then the filter requires longer length to achieve adequate yield
Solution Approach 1:
The patent merges the filtration function with the water flow path by positioning the vertical filter surface directly in the downward flow path. Water flows downward along the filter surface, combining the filtration process with the gravity-driven flow, which allows adequate filtration yield within a compact vertical space without requiring excessive filter length.
Solution Approach 2:
The vertical orientation of the filter surface allows the filtration area to be developed in the vertical dimension rather than horizontally. This enables adequate filter surface area for sufficient yield while maintaining a compact overall length, as the filter utilizes the vertical space efficiently along the water flow path.
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
The design prevents residue deposition, maintains a low installation height, and ensures efficient filtration without frequent cleaning, allowing for installation in cisterns while maintaining high yield and filtered water output.
Implementation Method 1
The filter is preferably an adhesive filter. The type of rain water filter, in which the water runs off on a substantially vertically aligned filter surface and is pulled through the filter in the process through the forces of adhesion
Implementation Method 2
a vertically aligned filter surface, where unfiltered water flows through a channel with a longitudinal slot, allowing gravity to flush residues
Data Source
AI summary
A rain water filter is disclosed. The rain water filter includes a horizontal inlet and a horizontally arranged residual water outlet which are slightly offset in relation to each other. A pipe with a longitudinal slot connects to the inlet and the pipe leads into the residual water outlet. An adhesive filter which is in the form of a tunnel-shaped half-shell is arranged below the longitudinal slot, where the lateral walls are the filter surfaces of the filter. Due to the adhesion effect, the water which flows past is suctioned inwards where it passes through the longitudinal opening into a tank and from there, for example, into a cistern via a filter water outlet. The water running off from the side walls is collected on the base of the hollow cylinder and from there is guided to the residual water outlet.