A smart control system for the temperature and pressure of dialysis water

By controlling the temperature and pressure in real time during the heat sterilization process in the dialysis water purification equipment, the problems of thermal expansion hysteresis, local pressure peaks and microbubble retention are solved, thus improving the safety and stability of the equipment.

CN122308542APending Publication Date: 2026-06-30HANGZHOU WANJIE WATER TREATMENT EQUIP
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU WANJIE WATER TREATMENT EQUIP
Filing Date
2026-06-04
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the thermal disinfection process of dialysis water purification equipment, existing solutions are difficult to effectively coordinate and control the heat input of the heater, the temperature difference of the fluid pipeline, the pressure difference before and after the pump, and the operating frequency of the variable frequency pump. This leads to problems such as thermal expansion lag, local pressure peaks, water hammer impact, and microbubble retention, which affect the safety and stability of the equipment.

Method used

By employing components such as temperature sensors, pressure sensors, and variable frequency pump drivers, the controller collects and analyzes temperature and pressure difference data in real time, calculates thermodynamic expansion and hydrodynamic damping components, generates phase compensation commands, adjusts the frequency of the variable frequency pump, establishes a dynamic pressure buffer state, identifies and eliminates local microbubbles, and optimizes the temperature and pressure control of the fluid pipeline.

Benefits of technology

It improves the accuracy of judging thermal expansion trends, reduces pressure peaks and water hammer impacts, ensures the safety and stability of membrane modules and pipeline connections, avoids the problem of insufficient buffering, and achieves safe and reliable dialysis water.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122308542A_ABST
    Figure CN122308542A_ABST
Patent Text Reader

Abstract

This invention relates to the field of medical equipment and fluid control technology, specifically to an intelligent temperature and pressure control system for dialysis water. It includes: a fluid pipeline, a variable frequency pump, a heater, a variable frequency pump driver, a temperature sensor, a pressure sensor, a power detection module, and a controller. The controller calculates the thermodynamic expansion component based on heat flux and real-time temperature difference, and calculates the hydrodynamic damping component based on real-time operating frequency and real-time pressure difference. It determines the expected thermal expansion rate and generates a phase compensation command. Before the heater's operating state switches, it adjusts the operating frequency of the variable frequency pump, establishing a dynamic pressure buffer state in the fluid pipeline. This invention improves the accuracy of judging thermal expansion trends and avoids the insufficient buffering problem caused by existing solutions that rely solely on upper temperature limits or fixed frequency strategies.
Need to check novelty before this filing date? Find Prior Art