Thermostatic valve configuration procedure

The method and device for controlling stepper motors in motorized thermostatic valves address flow rate inconsistencies by precisely detecting stops and opening ranges, enhancing energy efficiency and battery life through electromotive force measurements.

FR3166949A1Pending Publication Date: 2026-04-03DELTA DORE SA
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Patent Information

Application Number
FR2024010456
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing motorized thermostatic valves experience unpredictable flow rates due to varying linear characteristics of valve bodies, leading to energy inefficiencies and instability in temperature regulation, particularly when powered by batteries.

Method used

A method and device that control the stepper motor of a motorized thermostatic head by measuring back electromotive force at each half step to detect precise stops and opening ranges, optimizing motor operation within the valve body's conduit range, reducing electrical consumption, and extending battery life.

Benefits of technology

Ensures uniform fluid flow rates across different valve bodies, minimizing energy consumption and prolonging battery life by accurately controlling the stepper motor based on electromotive force measurements.

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Abstract

The present invention relates to a method for setting the parameters of a motorized thermostatic head of a thermostatic valve comprising a valve body. The motorized thermostatic head causes a movement of a movable element of the valve body, allowing all or part of the fluid to circulate within the valve body, or preventing it from circulating. According to the invention: - the rotation of the stepper motor is controlled (E405) to cause the movable element of the valve body to move through its entire stroke within the valve body, - the back electromotive force is measured at each half step, - a stop corresponding to a complete closure of the conduit, preventing fluid from circulating within the valve body, is detected (E406) from the measurements, - an opening range for the conduit of the valve body is detected (E411) from the measurements, - the stop and the opening range are used to control the movable element. Figure to be published with the abstract: Fig.4.
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