Water Filter Cartridge Locking Mechanism for Pressure-Stable Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing water filtration devices face challenges in securely and efficiently attaching filter cartridges due to water pressure, which leads to cartridge displacement and requires complex locking and sealing mechanisms, making replacement difficult and costly.
Innovation Solution
The relocation of inflow and outflow openings on the connection head to align perpendicularly with the cartridge's axis, combined with a simplified valve system and a spring-loaded locking mechanism, allows for a stable and secure attachment without rotational stress, enabling easy replacement and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter cartridge is inserted against the direction of flow of unfiltered water, then the water inlet opening can be provided on the front side of the connection head, but the cartridge is pushed out of its position by water pressure during operation
Solution Approach 1:
The patent inverts the conventional insertion direction by having the cartridge insert in the direction of water flow rather than against it. This reversal changes the pressure distribution so that water pressure pushes the cartridge into its seating position rather than pushing it out, thereby maintaining both ease of operation and position stability.
Solution Approach 2:
The patent changes the orientation parameters of the inlet and outlet openings on the connection head to accommodate the reversed insertion direction. By modifying the geometric parameters and flow direction parameters, the system achieves stable cartridge positioning while maintaining operational simplicity.
2Reliability
If a locking device is designed to prevent cartridge displacement under water pressure, then the cartridge can be securely fixed, but the device complexity increases
Solution Approach 1:
The patent converts the harmful effect of water pressure (which previously pushed the cartridge out) into a beneficial force that assists the locking mechanism. The water pressure now works together with the locking device to maintain cartridge positioning, reducing the burden on the locking mechanism while maintaining security.
Solution Approach 2:
By inverting the insertion direction, the patent reduces the load on the locking device. The locking mechanism no longer needs to counteract full water pressure alone, as the reversed flow direction provides supporting force, thereby simplifying the locking device structure while maintaining reliable fixation.
3Reliability
If the inflow and outflow openings are relocated to align perpendicularly with the cartridge axis, then the cartridge is not pushed out by water pressure, but the valve device design becomes more complex
Solution Approach 1:
The patent relocates the inlet and outlet openings from the axial direction to the radial direction (perpendicular to the cartridge axis). This dimensional change in opening orientation creates a pressure distribution that stabilizes the cartridge position while the valve device adapts to this new geometric configuration.
Solution Approach 2:
The patent modifies the geometric parameters of the connection head by changing the orientation and position of the openings. This parameter change achieves stable cartridge positioning, and the valve device is accordingly adapted to work with this new configuration, balancing reliability with manageable complexity.
4Reliability
If a complex valve design and large number of sealing elements are used, then drip losses are prevented when dismantling, but the manufacturing cost increases
Solution Approach 1:
The patent converts the potential harm of water leakage during dismantling into a benefit by using the water pressure itself to maintain sealing. The reversed insertion direction ensures that water pressure continues to support the cartridge and sealing elements even during removal, reducing the need for complex sealing mechanisms while preventing drip losses.
Solution Approach 2:
The system uses the water flow and pressure themselves to maintain the sealing function during cartridge dismantling. The fluid dynamics automatically support the sealing elements without requiring additional active control mechanisms or complex designs, thereby preventing leakage while reducing manufacturing complexity and cost.
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 design ensures a secure fit of the filter cartridge, prevents displacement under water pressure, simplifies the valve mechanism, and facilitates easy replacement without compromising water flow, thereby enhancing the reliability and cost-effectiveness of the filtration system.
Implementation Method 1
a spring device (90) which acts on the valve element (51), in particular to move the valve element (51) from the closed into the open position
Implementation Method 2
contain at least one filter medium, for example in granular form, which is used for the chemical and/or mechanical removal and/or reduction of organic and/or inorganic impurities
Implementation Method 3
those which, in addition to a sieve-like structure, contain at least one filter medium
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A device (1) for treating water is described, comprising a cartridge (10), which includes a container (12) for receiving treatment means and a connecting head (20). Furthermore, a connecting device (40) is provided, which is equipped with a holder (42), a valve device (50), and a locking device (80). The holder (42) has at least one side wall (44a, b), on which the inflow and outflow openings (48a, b) are disposed. The valve device (50) has a valve element (52), which surrounds the connecting head (20) at least partially and is disposed movably in the holder (42). The associated cartridge (10) provides at least one inlet opening (30a) and at least one outlet opening (30b) on at least one side surface. The cartridge has at least one recess (124) and/or a lug (24) for the engagement of a locking element (81) of a locking device (80) of the connecting device (40).