Fluid system, in particular for use in a cleaning device
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Solution Overview
Problem
In cleaning and disinfection devices, particularly those with rotating components, leaks and pressure loss are significant issues due to dirt in annular gaps and manufacturing tolerances, leading to inefficiency and waste of cleaning fluid.
Innovation Solution
A fluid system with an axially displaceable sealing element surrounding a bearing part, connected via a fluid connection, which applies hydraulic pressure to exert a force on the sealing element, ensuring minimal fluid loss and maintaining long-term functionality by adjusting the bearing play and sealing against other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional sealing elements are used in rotating components, then manufacturing is simpler, but fluid loss and pressure loss increase due to dirt accumulation and manufacturing tolerances
Solution Approach 1:
The sealing element is designed to be axially displaceable, allowing it to dynamically adjust its position in response to varying operating conditions such as pressure changes and dirt accumulation. This dynamic adjustment maintains optimal sealing contact without requiring complex adjustable mechanisms, resolving the contradiction between reduced fluid loss and simplified device complexity.
Solution Approach 2:
The sealing element utilizes the existing fluid pressure within the system to automatically adjust its own positioning and maintain sealing effectiveness. The hydraulic force generated by the fluid pressure itself serves to optimize the sealing contact, eliminating the need for external adjustment mechanisms and reducing overall system complexity while minimizing fluid loss.
2Productivity
If fixed sealing elements are used, then device structure is simpler, but bearing play cannot be optimized leading to increased friction and reduced efficiency
Solution Approach 1:
The axially displaceable sealing element enables dynamic optimization of bearing play during operation. As operating conditions change, the sealing element automatically adjusts its axial position to maintain optimal clearance, minimizing friction and maximizing cleaning efficiency without requiring complex control systems or multiple components.
Solution Approach 2:
The sealing element's axial position parameter is allowed to change dynamically in response to operating conditions. This parameter change enables continuous optimization of bearing play and sealing effectiveness, improving productivity while keeping the mechanical structure relatively simple through natural hydraulic actuation.
3Reliability
If metal-to-metal sealing is used in rotary joints, then sealing effectiveness is improved, but friction and wear increase reducing long-term functionality
Solution Approach 1:
The sealing system utilizes hydraulic pressure from the fluid being conveyed to create and maintain the sealing force. This hydraulic sealing mechanism eliminates or reduces the need for direct metal-to-metal contact, significantly lowering friction and wear on rotating components while maintaining effective sealing, thereby extending component lifespan without sacrificing sealing reliability.
Solution Approach 2:
The sealing element functions as a flexible barrier that utilizes fluid pressure to maintain sealing contact. This approach replaces rigid metal-to-metal sealing with a more compliant sealing mechanism that reduces friction and wear on rotating parts while maintaining sealing effectiveness over extended operational periods.
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 significantly reduces fluid loss and pressure loss, allowing for efficient use of cleaning fluid and maintaining device functionality by creating a thin fluid film for the rotating components to slide on, thus minimizing friction and maintaining optimal bearing play.
Implementation Method 1
the sealing element has at least one hydraulic inner surface which can be acted upon by the fluid and which faces the fluid connection, wherein by means of pressurizing the hydraulic inner surface, in particular via the fluid connection, a hydraulic force can be exerted on the sealing element in the direction of the bearing surface associated with the sealing element
Implementation Method 2
creating a thin fluid film for the rotating components to slide on, thus minimizing friction and maintaining optimal bearing play
Data Source
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AI summary
The invention relates to a fluid system (110) for conducting a fluid, a nozzle system (141) comprising this fluid system (110), and a cleaning device (148) for cleaning goods (150) to be cleaned The invention also relates to a method for operating a fluid system (110) and a method for cleaning goods (150) to be cleaned. The fluid system (110) comprises at least one fluid-conducting bearing part (114) extending axially in relation to an axis of longitudinal extension (112), as well as at least one fluid-conducting rotary part (116) which is mounted on the bearing part (114) so as to be rotatable about the axis of longitudinal extension (112). The bearing part (114) and the rotary part (116) are fluidically interconnected via at least one fluid connection (118). At least one axially slidably mounted sealing element (122) is located between the bearing part (114) and the rotary part (116). The sealing element (122) annularly surrounds the bearing part (114). The sealing element (122) is located between the fluid connection (118) and at least one bearing surface (119) associated with the sealing element (122). The sealing element (122) has at least one hydraulic inner surface (124) which faces the fluid connection (118) and can be supplied with the fluid. A hydraulic force can be exerted on the sealing element in the direction of the bearing surface associated with the sealing element by applying pressure to the hydraulic inner surface (124). The sealing element (122) is in multiple parts and has at least one axially slidably mounted sliding ring (126) which surrounds the bearing part (114), and the sealing element has at least one further sealing element (128). The further sealing element (128) seals the sliding ring (126) off from at least one other component of the fluid system (110).