Water-saving closestool siphon structure fluid simulation optimization method and system

By constructing a three-dimensional flow field model and optimizing the pressure gradient parameters, and combining eddy current intensity feedback to adjust the blade parameters, the dynamic pressure response and energy loss problems in the siphon structure of the water-saving toilet were solved, and the optimization of fluid kinetic energy conversion and siphon continuity was achieved.

CN121413488AInactive Publication Date: 2026-01-27ZHEJIANG ENDERUI IND & TRADE CO LTD
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Patent Information

Application Number
CN202511456414.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-13
Publication Date
2026-01-27
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the design of water-saving toilet siphon structures under low water pressure conditions, the static pressure threshold cannot respond to dynamic pressure changes, causing the simulation model to deviate from the real fluid behavior. The eddy current intensity adjustment and pressure gradient control are disconnected, resulting in increased energy loss. The blade parameters lack a dynamic coordination mechanism, which affects the siphon continuity and water-saving efficiency.

Method used

A three-dimensional flow field model is constructed, and the pressure gradient parameters are optimized through numerical iteration. The flow velocity distribution and pressure field are dynamically matched. The blade tilt angle and spacing are adjusted by combining the eddy current intensity feedback mechanism. A positive correlation function between the negative pressure peak and the siphon duration is established, and the collaborative parameter set is integrated for closed-loop control.

Benefits of technology

It achieves efficient conversion of fluid kinetic energy and continuity of siphon under low water pressure conditions, reduces the risk of siphon breakage, and improves simulation accuracy and water-saving efficiency.

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Abstract

The invention provides a fluid simulation optimization method and system for a siphon structure of a water-saving closestool. According to the method, a three-dimensional flow field model is constructed by collecting pressure mutation data of a liquid-gas interface of a flow guide cavity of the closestool and vortex intensity data of a spiral area and combining the shrinkage rate characteristics of a trapezoidal cross section; iteratively adjusting a pressure gradient parameter based on a shrinkage rate parameter in the model, so that the flow velocity distribution of the simulation flow field is dynamically matched with the pressure field, and optimizing a pressure gradient balance negative pressure peak value according to the energy loss difference of the pipe section intersection and vortex intensity data; the inclination angles and the distances of the virtual blades are adjusted in an automatic linkage mode through vortex intensity feedback; verifying an inclination angle effect of a drain outlet by combining a water storage boundary, and establishing a positive correlation function of a negative pressure peak value and siphon time; and finally, integrating the collaborative parameter set, dynamically calibrating a negative pressure peak interval under a low water pressure working condition, and realizing closed-loop control of water saving and fluid kinetic energy conversion. According to the application, negative pressure peak value stable control and water-saving efficiency cooperative improvement in the siphon process are realized.
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