Water Faucet Cartridge Pressure Disk for High-Pressure Sealing
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Solution Overview
Problem
Ceramic control disks in water fitting cartridges lift apart at high water pressures, causing leaks due to inconveniently placed surfaces, leading to water escape.
Innovation Solution
A pressure element, such as a spring or water pressure in the mixing chamber, is used to press the control disk against the stationary bearing disk, with a through-hole guiding water into a pressure chamber between the disks, sealed by a molded seal, ensuring the disks remain together and preventing leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control disk and bearing disk are designed with conventional surface placement, then the structure is simple, but at high water pressure the disks lift apart causing leaks
Solution Approach 1:
The patent introduces a hydraulic pressure chamber between the control disk and bearing disk that utilizes water pressure to generate a pressing force. The pressure chamber receives water under pressure and converts this hydraulic pressure into a mechanical pressing force that pushes the control disk against the bearing disk, ensuring reliable sealing at high water pressures without complex surface configurations.
2Reliability
If a spring is used as the pressure element to press the control disk against the bearing disk, then the disks remain in contact, but the pressure remains constant even at low water pressure making adjustment harder
Solution Approach 1:
The patent replaces the static spring pressure element with a dynamic hydraulic pressure chamber that adapts its pressing force based on water pressure conditions. At low water pressure, the pressing force is reduced allowing easier adjustment; at high water pressure, the pressing force increases automatically to maintain reliable disk contact. This dynamic adaptation eliminates the need for manual pressure adjustment.
Solution Approach 2:
The hydraulic pressure chamber utilizes the water pressure already present in the system to generate the necessary pressing force. The system self-regulates by using the incoming water pressure to press the control disk against the bearing disk, eliminating the need for external spring mechanisms or manual adjustment mechanisms.
3Ease of operation
If water pressure is used to press the control disk against the bearing disk, then adjustment is easier at low pressures, but the system requires a sealed pressure chamber and through-hole increasing complexity
Solution Approach 1:
The patent integrates the pressure chamber into the existing cartridge structure, where the control disk itself forms one boundary of the pressure chamber. The through-hole in the control disk serves dual purposes: allowing water flow through the mixing chamber and providing hydraulic pressure to the pressure chamber for disk pressing. This multi-functionality reduces overall structural complexity.
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 solution effectively prevents water leakage at high pressures by maintaining contact between the control and bearing disks, allowing easier adjustment at lower pressures and ensuring the sliding disk is fully sealed, preventing water escape.
Implementation Method 1
one side of the pressure chamber directly or indirectly forms the control disk, such that the water located in the pressure chamber presses the control disk towards the bearing disk by means of a force that is dependent on the water pressure
Data Source
AI summary
The invention relates to a cartridge (1) for a water fitting having a stationary bearing disk (2) on which a rotatable ceramic control disk (3) is placed and on which control disk (3) a sliding disk (4) made in particular of plastics material is located.In order that no leaking water can escape from the cartridge (1) even at high water pressure, it is proposed that the control disk (3) is pressed against the stationary bearing disk (2) by a pressure element.