HIGH-PRECISION HEATER OF FLOWING LIQUID Russian patent published in 2025 - IPC F24H1/14 A61B18/00 

FIELD: heat engineering.

SUBSTANCE: invention relates to the field of heat engineering, in particular to the flowing liquid heater and can be used for biological experiments, including pathophysiological and electrophysiological experiments. High-precision flow fluid heater consists of a flow fluid heating unit, a control unit and a power supply. Heating unit consists of a base, a coil and a heating component. In the base there are through holes for the screws and coaxially with them nuts for screws are mounted with possibility of the coil to the base fixing; heat-distributing plate and cement resistors are arranged in the base; grounded shield from electromagnetic interference is attached under the base. Coil is made of a transparent and non-toxic material. Control unit having ventilation holes consists of device control system, heating self-regulation system. Device control system consists of a liquid crystal display configured to show the present and target liquid heating temperature and an encoder configured to set the target heating temperature values in range of 20-50 °C, wherein the LCD display and the encoder are mounted in the control unit and connected to the ESP32 processor. Heating self-regulation system is configured to operate on proportional-integral differentiating controller principle and consists of ESP32 processor, internal temperature sensor located in internal temperature sensor channel with possibility of heated liquid temperature values transmission to ESP32, ESP32. Power supply source consists of a power supply unit and 12-5 V voltage stabilizer, the power supply unit is connected to the control unit through a power socket with the possibility of supplying a heating component with voltage of 12 V through a down-converter and an analogue filter, as well as with possibility to supply ESP32 with voltage of 5 V through voltage stabilizer 12-5 V.

EFFECT: providing heating of flowing liquid to target temperature with low temperature spread, namely in range of +/-0.1 °C, possibility to track in real time the temperature of the heated liquid inside the device.

1 cl, 16 dwg