Float Valve Orientation Element Prevents Cistern Wall Friction
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Solution Overview
Problem
Existing valve arrangements for filling cisterns, particularly concealed cisterns, face challenges in ease of installation, operational safety, and reliability, as the float can potentially get blocked due to friction with the cistern walls during water level changes.
Innovation Solution
A valve arrangement featuring a connection element, a check valve for manual control, and a float valve with an orientation element that aligns the float parallel to the cistern walls, preventing friction and ensuring safe operation, comprising guide tabs and alignment elements to secure the float valve's position relative to the check valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the float valve is installed without orientation elements, then the installation process is simpler, but the float may touch the cistern walls causing friction and potential blockages
Solution Approach 1:
The patent introduces orientation elements as intermediary components between the float valve and the cistern walls. These elements act as mediators that guide the float valve's position, ensuring the float moves parallel to the walls without direct contact. The orientation elements translate the float's vertical movement into a controlled path that maintains safe clearance from the cistern walls, thereby preventing friction and blockages while adding minimal structural complexity.
Solution Approach 2:
The orientation elements are designed to automatically align the float valve with the cistern walls during installation and operation. The guide tabs and guide recesses create a self-aligning mechanism that ensures proper positioning without requiring additional adjustment or intervention. The float valve's own movement during filling operations serves to engage with the orientation elements, which then automatically maintain the correct orientation throughout the operational cycle.
2Reliability
If orientation elements are added to align the float valve, then operational safety improves, but the device complexity increases
Solution Approach 1:
The patent divides the float valve assembly into distinct functional segments: the float valve itself, the orientation elements (guide tabs and guide recesses), and the connection components. This segmentation allows each element to perform its specific function independently - the float valve controls water flow, while the orientation elements handle alignment and positioning. The modular nature of this segmentation makes the overall system easier to manufacture, assemble, and maintain despite the increased number of components.
Solution Approach 2:
Instead of trying to prevent float contact with walls through complex restriction mechanisms, the patent inverts the approach by using positive guidance elements that actively maintain the correct position. Rather than restricting movement, the guide tabs and guide recesses positively guide the float valve along the desired path, ensuring proper orientation through engagement rather than constraint. This inverted approach simplifies the overall design while achieving the reliability goal.
3Ease of operation
If the float valve is allowed to move freely, then installation is easier, but friction with walls may block the float
Solution Approach 1:
The orientation elements are pre-configured on the float valve assembly before installation into the cistern. The guide tabs are already attached to the float valve, and the guide recesses are pre-formed in the cistern wall. This preliminary preparation ensures that when the float valve is installed, the alignment is automatically achieved through the engagement of these pre-positioned elements, eliminating the need for post-installation adjustment while preventing friction and blockage from the outset.
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 enhances operational safety and reliability by preventing the float from touching the cistern walls, reducing the risk of blockages and ensuring smooth water supply control, making the system easier to install and maintain.
Implementation Method 1
During the process of filling the cistern, the float is moved upwards by the rising water level and thereby acts on the valve body, which is closed by the float when a certain water level is reached.
Implementation Method 2
By arranging the orientation element, the float of the float valve in the sanitary item can be aligned so that it does not touch the wall of the same, thereby preventing friction, which in the worst case could result in the float being blocked.
Data Source
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AI summary
The valve assembly (1) has a connection element (5) for connecting the valve assembly with a supply line (4), a check valve (6) for manual blocking the flow of the supply line and a float valve (7) with a float (13). The float valve is aligned by an orientation element (15) in a sanitary article. An independent claim is also included for a method for mounting a valve assembly.